text:
In Stock - Fast Dispatch from Brisbane
Roma Tomato Seeds - ($7.15)
Cultiv8 Flexible Propagation Heat Mat [Medium] - ($46.00)
Jiffy Propagation Peat Pellets [36mm x 36 Pellets] - ($12.80)
Mondi Propagation Kit - 3 Pieces with Dome, Tray and Lattice [28 x 55cm] - ($18.90)
The Jiffy Pellet Greenhouse is a propagation kit which includes a Greenhouse and 36 x 36mm Jiffy Peat Pellets. It is a complete propagation solution. The plastic greenhouse provides warmth and humidity to cuttings and seedlings for rapid growth. For winter growing a heat pad can be added to control temperature.
Jiffy Peat Pellets are made from compressed peat, wood pulp and coir pitch. The pellets expand with water and are an ideal growing medium for seeds. The pellet acts as the pot and the soil at the same time. Once the seed has germinated and the seedling is large enough to handle, the pellet can then be planted whole. Jiffy Peat Pellets help to prevent transfer shock as the plants roots are not disturned.
How To Use The Jiffy Pellet Greenhouse:
- Remove the greenhouse lid and pour warm water into the greenhouse tray until the peat pellets are covered.
- The pellets will absorb the water and start to expand after some time. Keep adding water until the pellets have expanded completely.
- Plant your seeds into each pellet.
- Put the cover on the greenhouse and keep it covered until your seeds start to germinate.
- When your seedlings grow big enough, transplant them with the pellet and all.
|Warranty Length||Limited Warranty|
|Warranty Conditions||Limited Warranty|
|Shipping Weight||0.10 kg|
Limited Warranty - This product has been stored in a controlled environment to ensure you will receive the best quality product possible. Due to this reason this product is sold on a strict no refund or return policy, unless it falls under a warranty claim.
This calculator will show you the delivery charges for this product only.
Free Shipping Eligibility
- Aqua Gardening offers free shipping on most orders above $100 that are not bulky and are sent to metro areas. Once you place all the items you wish to buy in the cart, the combined shipping price will be shown in the cart, including Free Shipping if you are eligible. For full details please see our free shipping eligibility here.
- Back Order products - These are products we usually carry in stock but are temporary out of stock. These products will be back in stock within a few days. We can send you an email notification when they are back in stock if you click on the "Notify me when back in stock" link. See the full details here.
- Special Order products - These are products that we do not regularly stock. These products will be ordered specially for you, or dispatched directly to you from our supplier. See the full details here.
- Online Only products - These are products that are in stock in a different warehouse and can't be picked up with the Click & Collect option. If you wish to collect these products from our Brisbane showroom, you can enter our address as the delivery address. Shipping costs may apply. See the full details here.
- Click & Collect Only products - These products can only be collected from our Brisbane showroom as we can not ship them. If you place any of these products in your cart, you will only see the Click & Collect option at the checkout.
- Fast Dispatch products - These are products that we have in stock in our Brisbane showroom, and they are available for immediate Click & Collect or Shipping. Keep in mind that if you have a product which is not listed as a Fast Dispatch product in your cart, there might be a delay on your order. See the full details here.


text:
The Voting Process
Learn more about voting:
An Easy Read resource created by Autistic Self-Advocacy Network (ASAN) that describes the process of voting, including the different types of elections, political parties and how to prepare to vote when you have a disability.
View ASAN's complete voting toolkit. It is a great resource for people with disabilities and has information about the laws and policies in every state. There are two different versions of the tool kits available: an easy read edition, and a plain language version.

source: openbmb/Ultra-FineWeb


text:
5.1 The Likely Impacts of High Bandwidth Networks on the Turkish Economy
According to the National Broadband Vision Study of Turkey,*
through fostering broadband development the Turkish economy could gain US$ 4.9-10
billion extra value added each year thereby boosting its economic growth by 0.8-1.7
percentage points. This economic momentum enabled by an enhanced broadband ecosystem
would bring 180,000-380,000 new jobs and provide new income opportunities. This
implies that employment creation in new broadband-related activities would eventually
compensate for job loss due to process optimization and structural displacements.
Through help of a toolkit* the Broadband National Vision Study
reports to find a significant growth impact for the Turkish economy fueled by broadband
enhancing public policies. In the baseline growth scenario Turkish economy would
take off by an annual rate of 5.0 per cent as depicted in Figure 5‑1, and it would reach the US$ 1,216 billion GDP
level by the end of 2023.
Under the broadband enhancing growth scenario in which a set of active government
programs to boost broadband impact are introduced, the economic growth forecast
is much faster, with an additional 2.3 percentage points, reaching to 7.3% on annual
basis. Government policies targeting enhanced broadband infrastructure and ecosystem
will boost economic growth significantly. By 2023 the Turkish economy would have
a GDP at USD 1,652 billion rather than USD 1,216 billion of the baseline scenario.
This is a GDP level 36% greater than the baseline. It may accurately be called the
The broadband effect encompasses two distinctive categories: Industry benefits (measured
as USD 289 billion during 2010-2023) comprising of the overall broadband productivity
impacts within and beyond the ICT industry; and pillar effects (measured as USD
147 billion during 2010-2023) which might directly be associated with broadband
enhancing policies of the government. Since industry benefits are nearly two times
larger than pillar benefits for Turkish economy, broadband enhancing policies should
trigger a multiplier effect within the economy and their indirect impacts could
potentially outpace the direct effects.
The study also analyzes detailed impacts of enhanced broadband polices on different
economic sectors, the so called pillar effects. Pillar effects can be decomposed
into different sectors as follows:
- 7 per cent of total
pillar effects will come from revitalized small/medium business;
- 6 per cent contribution
will arrive from improved government services;
- 4 per cent to come
from the benefits of broadband-enabled education;
16 per cent to come from
a more attractive business environment;
- 67 per cent to come
from other sectors, as well as multi-factor productivity and the benefits of collaboration
across the economy.
Figure 5‑1 Base line and
broadband enhanced growth scenarios, Real GDP2009=100
Analyses indicate forecast benefits from increased ICT adoption by the SME sector
will be large and e-government applications would provide a significant amount of
contribution through cutting costs and improving productivity. Another important
policy area that should be focused is education. The main benefit seems to be improvements
in the general business
environment. Under the broadband enhanced scenario policies to foster the business
environment, 16 % of total pillar effects will come from improvements in the business
framework alone. The largest one is the multiplier effect. Broadband adoption will
bring benefits diffusing beyond the ICT sector through channels of multifactor productivity.
5.2 Factors Contributing to Turkey's Broadband Development
E-government initiatives have been a major driving force for development of the
broadband ecosystem. Turkey has implemented a highly motivated e government program
that created the necessary demand for enterprises in the ICT sector and motivated
citizens for increased Internet usage. In this regard Turkey has demonstrated an
interesting example that countries with relatively lower level of Internet penetration
and usage ratios can exploit e-government programs as a means to ignite development
of the broadband ecosystem.
Ensuring a shared vision among political leaders and technocrats has also been an
important factor in pushing e-government programs. Since the coming of the new national
government into power in 2002, political leaders saw e-government as a central instrument
that would support public reforms and larger changes in the political system. A
central organizational structure was formulated to develop strategies and put public
money into the pipeline for a set of strategically important projects with high
value and a high transaction volume.
The EU candidacy of Turkey and the membership negotiation process has provided a
good opportunity for the country to reform its ICT and broadband legal and regulative
frameworks. This process helped bureaucrats and top-level managers get closer to
European institutions, policies and initiatives, and market developments in these
The high tempo growth of Turkish economy in the last decade is another factor supporting
in the Internet revolution. The new national government has implemented ambitious
market oriented reforms complemented with a proactive foreign policy which resulted
in large sums of overseas capital flowing into the country. Communications, software
and hardware segments of ICT industries have expanded rapidly.
Figure 5‑2 Turkey connectivity
performance by scorecard component, 2010
5.2.1 Lessons learned
The Connectivity Scorecard is a composite index to assess the relative development
level of ICTs (Figure
Turkey was found to have a robust consumer infrastructure due to its high mobile
and PSTN penetration and also the recent progress in broadband networks. It also
scores strong on consumer usage and skills metrics such as frequent Internet usage
and uptake of voice services. According to the Scorecard the country's business
infrastructure is above average, with high penetration of secure Internet servers,
and substantial business investments in ICT. Turkey also impresses on government-related
metrics such as government spending on ICT and provision of government services
However the Scorecard points out that Turkey ranks somewhat poorly in business usage
and skills, where its score is considerably lower than one might expect given the
state of its business infrastructure. Turkey has made considerable progress in developing
a robust ICT infrastructure but its weaker usage and skills scores indicate that
the country is yet to fully realize its benefits. Therefore, it needs to place greater
effort on ensuring the adoption and diffusion of ICTs to leverage competitive power.
Turkey faces a strategic opportunity in terms of broadband infrastructure development.
The majority of the national broadband network is based on slower speed connections
which do not optimally support advanced applications of next generation connectivity
such as e-education, e-health, etc. There are signals suggesting the current broadband
network has become somewhat overloaded.
To enhance a rapid take up of high bandwidth broadband networks the government should
play a more effective and active role. First and foremost is ensuring effective
regulation. The public stake in the incumbent operator should not prevent authorities
from enforcing rules for fostering competition in the broadband market. Secondly,
Turkey should design a complete and integrated broadband strategy for coordinating
various individual pieces in the same direction.
To enable increased ICT and broadband adoption by businesses the government should
exercise greater efforts to design effective programs and incentives. In particular
skill gaps should be identified and adequately addressed with participation of private
The lack of a suitable national accounting framework for more detailed analysis
hinders international benchmarking in most emerging policy areas notably ICTs and
innovation. Turkey should take measures to address this problem and ensure reliable
and timely indicators are developed and made available to the public.

source: HuggingFaceFW/fineweb-edu


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Let $(X,\mathcal D)$ be a Hausdorff uniform space and for each Hausdorff uniformity $\mathcal U$ on $X$, $$\mathcal U \subseteq\mathcal D\to \mathcal U =\mathcal D$$
Is $(X,\mathcal D)$ compact?
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1 Answer
up vote 4 down vote accepted
The following are equivalent for a Tychonov space $X$:
 1. $X$ is locally compact.
 2. There is a minimal uniformity on $X$.
 3. There is a minimal totally bounded uniformity.
 4. The uniformities form a complete lattice.
 5. The totally bounded uniformities form a complete lattice.
See Shirota On systems of structures of a completely regular space Osaka Math. J. Volume 2, Number 2 (1950), 131-143.
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text: Cantilevers are one of the most utilized mechanical elements for acoustic sensing. In comparison to the edge clamped diaphragms of different shapes, a single edge clamped cantilever makes an acoustic sensor mechanically sensitive for detection of lower pressure. The aspect ratio of cantilevers is one of the most important parameters which affect sensitivity. Herein, we present a mathematical, finite element method and experimental analysis to determine the effect of the aspect ratio on the resonant frequency, response time, mechanical sensitivity, and capacitive sensitivity of a cantilever-based acoustic pressure sensor. Three cantilevers of different aspect ratios (0.67, 1, and 1.5) have been chosen for sound pressure application to detect capacitance change. The cantilever with the smallest aspect ratio (0.67) has the highest response time (206 ms), mechanical sensitivity, and capacitive sensitivity (22 fF), which reduce after increasing the aspect ratio. The resonant frequency of the cantilever was also analyzed by applying sweep in sound frequency. It was found to be minimum for the cantilever with the smallest aspect ratio (510 Hz) and increases with an increase in the aspect ratio. We have applied the garage fabrication process using low cost, recyclable, and easily available materials such as metal coated polymer sheets, mounting tapes and glass slides as alternative materials for expensive materials.


text:
Squirfoxaroos have a special way of speaking. They say Happy to Ya as a greeting and use some words that are almost like ones we use but not quite. Here is a list, a Glossary, of these words.
- Happy to Ya–A greeting, such as how are you and hello, but also a sentiment, as in I hope you are happy.
- Excitalated, excitalating, adjective. def: very enthusiastic and eager, super excited. "Maddieroo was excitalated when she saw Squirrel McNutt."
- Happenate, happenating, verb, def: to occur in an enthusiastic and exciting manner. "Happy to Ya everybody, what's happenating!"


Hello All,
I am writing an image processing application in C# that needs to be speed optimized for faster performance.
I have been told that using Unsafe Code together with Pointers can speed my algorithm up significantly. Unfortunately, I have no experience with Pointers at all.
How can I make the following example code work with Pointers? (The example multiplies a 640 x 480 pixel images' pixel values by 2, and copies those new values into another 640 x 480 image)
Example:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 double[,] Redmap = new double[640, 480];
 double[,] Greenmap = new double[640, 480];
 double[,] Bluemap = new double[640, 480];
 double[,] Redmap2 = new double[640, 480];
 double[,] Greenmap2 = new double[640, 480];
 double[,] Bluemap2 = new double[640, 480];
 for (int y = 0; y < 480; y++)
 {
 for (int x = 0; x < 640; x++)
 {
 Redmap2[x, y] = Redmap[x, y] * 2;
 Greenmap2[x, y] = Greenmap[x, y] * 2;
 Bluemap2[x, y] = Bluemap[x, y] * 2;
 }
 }
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thanks in advance for any help provided!
One thing you can do is parallelize this method. Since no values depend on any other values I'd parallelize at the 'y' index level. You can also use shifting (which is generally faster than multiplication) since you are multiplying by two.
Comments
Yes! Binary, I forgot.
You may want to review this article.
_URL_
I also remebered reading somewhere that the outermost dimension should be iterated before the inner ones. If I recall correctly, it has something to do with the layout in memory, but don't quote me on that.
I ran a test case of your original versus flipping the iteration sequence and it made a big improvement. I also tried using jagged arrays as mentioned in the article.
On my test system Vista32, VS2008, the jagged array (modified iterator sequnce) had the best performance. Approx 35% of original time.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
 public partial class Form1 : Form
 {
 System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
 public Form1()
 {
 InitializeComponent();
 if (System.Diagnostics.Stopwatch.IsHighResolution)
 {
 Console.WriteLine("Operations timed using the system's high-resolution performance counter.");
 }
 else
 {
 Console.WriteLine("Operations timed using the DateTime class.");
 }
 }
 int iterations = 100;
 private void button1_Click(object sender, EventArgs e)
 { // original
 button1.Enabled = false;
 GC.Collect(); // just for performance testing
 sw.Reset();
 sw.Start();
 double[,] Redmap = new double[640, 480];
 double[,] Greenmap = new double[640, 480];
 double[,] Bluemap = new double[640, 480];
 double[,] Redmap2 = new double[640, 480];
 double[,] Greenmap2 = new double[640, 480];
 double[,] Bluemap2 = new double[640, 480];
 for (int i = 0; i < iterations; i++)
 {
 for (int y = 0; y < 480; y++)
 {
 for (int x = 0; x < 640; x++)
 {
 Redmap2[x, y] = Redmap[x, y] * 2;
 Greenmap2[x, y] = Greenmap[x, y] * 2;
 Bluemap2[x, y] = Bluemap[x, y] * 2;
 }
 }
 }
 sw.Stop();
 Console.WriteLine(sw.ElapsedMilliseconds);
 button1.Enabled = true;
 }
 private void button2_Click(object sender, EventArgs e)
 { //Original, but Modified iterator sequence
 button2.Enabled = false;
 GC.Collect(); // just for performance testing
 sw.Reset();
 sw.Start();
 double[,] Redmap = new double[640, 480];
 double[,] Greenmap = new double[640, 480];
 double[,] Bluemap = new double[640, 480];
 double[,] Redmap2 = new double[640, 480];
 double[,] Greenmap2 = new double[640, 480];
 double[,] Bluemap2 = new double[640, 480];
 for (int i = 0; i < iterations; i++)
 {
 for (int x = 0; x < 640; x++)
 {
 for (int y = 0; y < 480; y++)
 {
 Redmap2[x, y] = Redmap[x, y] * 2;
 Greenmap2[x, y] = Greenmap[x, y] * 2;
 Bluemap2[x, y] = Bluemap[x, y] * 2;
 }
 }
 }
 sw.Stop();
 Console.WriteLine(sw.ElapsedMilliseconds);
 button2.Enabled = true;
 }
 private void button3_Click(object sender, EventArgs e)
 { // jagged array
 button3.Enabled = false;
 GC.Collect(); // just for performance testing
 sw.Reset();
 sw.Start();
 double[][] Redmap = new double[640][];
 double[][] Greenmap = new double[640][];
 double[][] Bluemap = new double[640][];
 double[][] Redmap2 = new double[640][];
 double[][] Greenmap2 = new double[640][];
 double[][] Bluemap2 = new double[640][];
 for (int i = 0; i < 640; i++)
 {
 Redmap[i] = new double[480];
 Redmap2[i] = new double[480];
 Greenmap[i] = new double[480];
 Greenmap2[i] = new double[480];
 Bluemap[i] = new double[480];
 Bluemap2[i] = new double[480];
 }
 // note: changed iteration sequence
 for (int i = 0; i < iterations; i++)
 {
 for (int x = 0; x < 640; x++)
 {
 for (int y = 0; y < 480; y++)
 {
 Redmap2[x][y] = Redmap[x][y] * 2;
 Greenmap2[x][y] = Greenmap[x][y] * 2;
 Bluemap2[x][y] = Bluemap[x][y] * 2;
 }
 }
 }
 sw.Stop();
 Console.WriteLine(sw.ElapsedMilliseconds);
 button3.Enabled = true;
 }
 }
}
Edited 4 Years Ago by TnTinMN: typo
Yep, jaggad arrays work better do to the way they are layed out in memory. I wrote something a while back about matrix multiplication and using jagged arrays ...
This article has been dead for over six months. Start a new discussion instead.


text:
The Exo Terra Repti Glo 10.0 is a UV Strip Light for reptiles that features a very high UVB output, similar to the desert environment your bearded dragon or other desert reptile is used to, so it's perfect for reptiles like bearded dragons.
Deserts get more direct sunlight than any other reptile habitat because of fewer clouds, less air humidity and no shade - so desert reptiles are more exposed to UV and have evolved to use it, becoming an essential factor for their health and wellbeing.
The UVB light emitted by this Exo Terra Repti Glo 10% UV is used by your reptile to synthesise vitamin D3 to turn dietary calcium into strong bones.
For an even higher light output we recommend combining a Repti Glo 2.0.
- Ideal for all desert dwelling reptiles.
- Ultra High UVB output.
- Effective up to 50 cm (20").
- Provides necessary UVB rays for optimal calcium metabolism.
- Recommended for use with screened terrariums. Terrariums with dense screen covers (screens can filter out UVB rays).


3
$\begingroup$
As I understand, computing the exact posterior of parameters $p(\theta|x)$ is nearly always impossible since we need to compute the evidence $\sum_\theta p(x|\theta)p(\theta)$ with every possible combination of values that $\theta$ and $x$ can take which is lots of summation operations. So we try to find an approximation to $p(\theta|x)$ by variational or sampling methods. I have a few questions regarding these. Some of them might be not so clear or silly since I am confused.
1) In order to do sampling we need to calculate $p(x|\theta)p(\theta)$ for a specific value of $x$ and $\theta$, which gives us an unnormalized scalar value, and we know the exact shapes of $p(x|\theta)$ and $p(\theta)$ distributions separately. Right?
2) Is it possible that we also do not know or cannot compute the likelihood and prior? Can Approximate Bayesian Computation or other likelihood-free inference methods be used for this?
3) In rejection sampling the proposal density has to cover the posterior, right? How can we know if it does or not? We don't know the exact shape since we don't know the normalization term.
4) In MCMC this is not a problem since the normalization terms cancel when dividing two posterior values (which are scalar). Therefore just evaluating $p(x|\theta)p(\theta)$ is enough though we don't know the exact shape of the whole distribution. Is this correct?
5) If we sample the posterior, then we have $n$ samples $\theta_1, ..., \theta_n$. But we still don't have the distribution $p(\theta|x)$, so how can we find this?
6) For new data points we need to compute the posterior predictive $p(x_{new}|D)=\int p(x_{new}|\theta,D)p(\theta|D)d\theta$ where $D=\lbrace x_1,x_2,...,x_m \rbrace$ is the training set. How can we do this using the posterior samples? Do we again need sampling to calculate this integration?
7) What does computing and evaluating a distribution mean? What is the difference?
$\endgroup$
2
$\begingroup$
So we try to find an approximation to $p(θ|x)$ by variational or sampling methods.
This may need to be clarified a little. Variational methods approximate $p( \theta |x)$ by the closest possible approximation within some class of distributions. Sampling methods do not really set out to approximate $p(\theta|x)$ (although one could do that). Instead, usually one is interested in expectations or quantiles of $p(\theta | x)$, and they set out to estimate that. The key here is the word estimate, instead of approximate. You can find a more elaborate difference between the two methods in my answer here.
1) In order to do sampling we need to calculate $p(x|\theta)p(\theta)$ for a specific value of $x$ and $\theta$, which gives us an unnormalized scalar value, and we know the exact shapes of $p(x|\theta)$ and $p(\theta)$ distributions separately. Right?
Yes, usually in most cases, we have known likelihood $p(x|\theta)$ and a chosen known prior $p(\theta)$. To begin with, we assume that we can evaluate $p(x|\theta)p(\theta)$ in closed form for a given value of $x$ and $\theta$. This can sometimes be computationally expensive, if evaluating the likelihood is expensive.
2) Is it possible that we also do not know or cannot compute the likelihood and prior? Can Approximate Bayesian Computation or other likelihood-free inference methods be used for this?
Absolutely, it is possible that the likelihood specially cannot be evaluated (I haven't come across examples where the prior cannot be evaluated). In such cases, as you say, one can use Approximate Bayesian Computation, when there is no known distributional form of the likelihood, and data comes from a complex machine (for example climate models).
Alternatively, sometimes likelihoods themselves are intractable. This can happen for example in generalized linear mixed models, in problems with missing data etc. In such cases one can use pseudo-marginal MCMC methods, where inside the MCMC step, an unbiased estimate of the likelihood replaces the true likelihood evaluation.
3) In rejection sampling the proposal density has to cover the posterior, right? How can we know if it does or not? We don't know the exact shape since we don't know the normalization term.
Yes, in rejection sampling, the support of the proposed density must contain the support of the target density. This usually easy to determine, and is governed by the prior on $\theta$. For example if I assume the prior $\theta \sim Beta(\alpha, \beta)$, then I know that the support of $\theta$ is $(0,1)$. If my prior is $\theta \sim N(0,1)$, then I know that the support of $\theta$ is the full real line.
4) In MCMC this is not a problem since the normalization terms cancel when dividing two posterior values (which are scalar). Therefore just evaluating $p(x|\theta)p(\theta)$ is enough though we don't know the exact shape of the whole distribution. Is this correct?
Yes.
5) If we sample the posterior, then we have $n$ samples $\theta_1, ..., \theta_n$. But we still don't have the distribution $p(\theta|x)$, so how can we find this?
Like I wrote in the beginning, it depends on what quantities you are interested in. If you are interested in the posterior mean of $\theta$, then you are interested in $$E_{\theta|x}[\theta] = \int \theta p(\theta|x)\,. $$ This is estimated by $$\dfrac{1}{n} \sum_{t=1}^{n} \theta_t\,. $$ This is why MCMC is called as such (Markov chain Monte Carlo). The sampling is done using a Markov chain, and the estimation is done using Monte Carlo.
Similarly, all expectation, and quantiles can be estimated using such Monte Carlo estimators. There are also methods that estimate the normalizing constant using the samples, to give you an estimate of $p(\theta |x)$, like the paper here. However, in most cases, one is only interested in attributes of $p(\theta|x)$, which can directly be estimated using the MCMC samples.
6) For new data points we need to compute the posterior predictive $p(x_{new}|D)=\int p(x_{new}|\theta,D)p(\theta|D)d\theta$ where $D=\lbrace x_1,x_2,...,x_m \rbrace$ is the training set. How can we do this using the posterior samples? Do we again need sampling to calculate this integration?
Notice that the posterior predictive is nothing but an expectation with respect to the posterior distribution. In addition, note that given $\theta$, the new data point is independent of the old data. That is, $p(x_{new}| \theta, D) = p(x_{new} | \theta)$. So to estimate the posterior predictive $$\dfrac{1}{n} \sum_{t=1}^{n} p(x_{new}|\theta_t,D) = \dfrac{1}{n} \sum_{t=1}^{n} p(x_{new}|\theta_t)\,, $$ as long as you can evaluate the likelihood.
7) What does computing and evaluating a distribution mean? What is the difference?
Note first that there is a difference between distribution and the density of the distribution (read the discussion here. Evaluating a distribution, usually refers to evaluating the density at a particular point. For example, to use MCMC, you need to evaluate $p(\theta)$ at the proposed value of $\theta = \theta_{prop}$.
Computing a distribution would refer to finding the distribution, as in knowing the full density or cumulative density function of the distribution. So for example, while implementing MCMC, in every step we evaluate the posterior distribution (up to a normalizing constant), but at the end of the MCMC, if we can estimate the normalizing constant, we would have computed the distribution.
$\endgroup$
 - $\begingroup$ thanks for the very clear and detailed answer. I have two more questions regarding (6). Is the integrand the


text:
Welcome to Burt Township
Burt Township is located on the western border of Cheboygan County, which is situated in the north central part of northern Michigan's lower peninsula. While technically Burt Township is one standard geographic township in area, slightly more than half of the Township is water (Burt Lake).
Burt Township History
Burt Township takes its name from Burt Lake, which in turn was named after state surveyor William Burt. The lake is part of an important inland water route, stretching from Crooked Lake and Conway (nine miles from Petoskey) in the south to Lake Huron in the north via the mouth of the Cheboygan River. Native Americans used the route prior to European settlement and it was heavily used for commercial transportation of logs in the second half of the 1800s.
In the last two decades of the nineteenth century, the Michigan Central Railroad and the Grand Rapids & Indiana Railroad laid track through to Cheboygan, leading to the foundation of many villages, including that of Burt Lake. About the time lumbering was slowing down, the resort business began to build in the area, creating the beginnings of the seasonal tourist industry still important today. The water route is still in use and frequented by many small pleasure craft.

source: m-a-p/FineFineWeb


text:
Online bajo sexto tuning Pet sex cams
Luthiers eventually picked up on this practice and began leaving off the low E course during construction, producing instruments with only five courses—bajo quintos.Bajo sextos are traditionally tuned in fourths, what a guitarist would call all fourths tuning.Bajo sexto (Spanish: "sixth bass") is a Mexican string instrument with 12 strings in 6 double courses.A closely related instrument is the bajo quinto (Spanish: "fifth bass") which has 10 strings in 5 double courses.So, take a stroll down memory lane to remember all of our past Word of the Year selections.The sound is projected either acoustically, using a hollow wooden or plastic and wood box (for an acoustic guitar), or through electrical amplifier and a speaker (for an electric guitar).The term "finger-picking" can also refer to a specific tradition of folk, blues, bluegrass, and country guitar playing in the United States.The acoustic bass guitar is a low-pitched instrument that is one octave below a regular guitar.
When played in older styles of music where the instrument assumes the role of a bass, the strings are usually plucked with the fingers.The electric guitar has had a major influence on popular culture.The guitar is used in a wide variety of musical genres worldwide.The modern guitar was preceded by the gittern, the vihuela, the four-course Renaissance guitar, and the five-course baroque guitar, all of which contributed to the development of the modern six-string instrument.There are three main types of modern acoustic guitar: the classical guitar (nylon-string guitar), the steel-string acoustic guitar, and the archtop guitar, which is sometimes called a "jazz guitar".
Search for online bajo sexto tuning:
In modern chordal and melodic styles, a pick is frequently used. There are few written sources, and until very recently most music dictionaries and encyclopedias didn't even mention the instrument.


text:
Water + Mandarin Experiment
- A bucket of water
- A mandarin
Method: fill a bucket with water and put mandarin in and see what happens.
My experience: So first we put the mandarin in the water and it was struggling to float(it still did though). Next we peeled the mandarin and put it in. It sank to the bottom like a rock. Then we put the peels in and they floated. Then my friends put the piece onto the peel and put it in the water it floated. I found out that for mandarins the skin is what keeps the buoyant.


text:
Bird hunters have always cross-bred dogs with the hopes of creating better four-legged companions. The Braque Français is a perfect example of this process. In Craig Koshyk's superb book Pointing Dogs: Volume One, The Continentals, he explains how hunters modified this breed and developed two types of pointing dogs with a shared ancestry and the same first name.
Back in the early days of bird dogs, the Navarre region of Franch/Spain was ground zero for some of the earliest Braque Français pointers. These dogs were big bodied and short haired, with large ears, loose skin, and a hound-like look overall. They hunted close, at a trot, and were known for their all-day stamina in the field.
Of course some people thought these dogs could be improved. These hunters developed a smaller, quicker line of Braque Français, with a wider range and more athleticism. Soon fanciers had a dilemma: which dogs were the true Braque Français?
To solve the problem, the Braque Français club established two sub categories: the Braque Français Gascony and the Braque Français Pyrenean. You can read more about these dogs here on Craig's blog.


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By Michael Budinski, Alexandria Beautification Commission
Alexandria, VA – If you keep your eyes open while strolling along S. Royal St. near Duke St .in Old Town, you may spot a magnificent flowering tree. Actually, I think the sweet smell of honey caught my attention first. St. Mary's Basilica parking lot (between S. Pitt St. and S. Royal St) provides an excellent vantage point. This striking tree is a fantastic example of a Southern Catalpa, which is known for its large leaves, spring flower clusters, and cigar-like seed pods. The Southern Catalpa is a popular ornamental shade tree, and while heights of 40 to 60 feet are typical, some specimens reach 80 feet. Although native to the southeast United States, it will naturalize in the northeast as well.


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Famous American statesman Ben Franklin once said, "either write something worth reading or do something worth writing."
The Journalism students did both as Kendallyn Julkowski captured first place in a mock review writing event and other journalism students honed their writing skills at the South Suburban Conference Publications event at Moraine Valley on Friday October 12.
The SSC Publications Conference is an event where schools bring their journalism students to compete in mock writing events and to learn from professionals in the journalism field. Kendallyn, in her first journalism event, was able to write a winning review for the Spartans.
When Kendallyn was asked about the event, she replied, "It was a nice opportunity to challenge my writing skills and I was thankful to have an opportunity to compete and end up doing so well." Kendallyn was not alone in her praise for the event.
Journalism Head Coach Patrick DiFilippo said, "We look forward to this event every year. We get a chance to learn about trends and advancements in the fields of journalism and design. Our students get to ask questions and learn from professionals in these fields."
Much of this advice will be used by the Journalism team as they compete against other schools at the Sectional in April.


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- Private Institution Type
In September 1995, Pastor Wayne Cordeiro founded New Hope Christian Fellowship in Honolulu, Hawaii. He brought with him a passion to develop leaders for the church and decided to found the School of Church Planters (SCP) in response to this need for leadership training. Graduates of the SCP program went on to plant churches in more than twenty countries.In 1998, the School of Church Planters was re-established as Pacific Rim Bible Institute, a formal Bible Institute of the International Church of the Foursquare Gospel. Pastor Wayne Cordeiro was appointed as President and Dr. Randall Furushima was Dean. Over the years, the Bible Institute grew into a college and finally, with the addition of graduate programs, the college became a university.
The Library consistently develops and evaluates its physical and electronic collections to best serve the research needs of the university community. As a research library, teaching information literacy is our primary goal and we continue to seek ways in which we can improve in this area. We endeavor to provide the most comprehensive and valuable collection of Christian theology and Bible studies in the state of Hawai'i.
Pacific Rim Christian University Library's purpose is to facilitate the university's discipleship of emerging Christian leaders by providing access to information resources and library services supportive of its biblical higher education curriculum.
The university is accredited by the Association for Biblical Higher Education,
Together with the ISIC Association and British Council IELTS, Studyportals offers you the chance to receive up to £10000 to expand your horizon and study abroad. We want to ultimately encourage you to study abroad in order to experience and explore new countries, cultures and languages.


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You have to admit there's at least a little resemblance between the ring-lined cross-section of a tree and an LP. So why shouldn't a tree's rings elicit beautiful music the way a record's can?
That might well have been the inspiration for Bartholomaus Traubeck's Years project, a record player that can read the rings of a tree and translate them into lovely piano melodies.
According to the Years Web site, "A tree's year rings are analyzed for their strength, thickness and rate of growth. This data serves as basis for a generative process that outputs piano music. It is mapped to a scale which is again defined by the overall appearance of the wood (ranging from dark to light and from strong texture to light texture). The foundation for the music is certainly found in the defined ruleset of programming and hardware setup, but the data acquired from every tree interprets this ruleset very differently."
One wonders whether different families of trees produce varying kinds of music. For example, does a willow generate more soulful ballads? Or would Mozart come from an old growth redwood? Poplars grow fast, so could they be used for upbeat tunes?
It's a terrific idea, and I'd love to see this in person. But absent that, next time I go hiking into the forest, I'm just going to have to imagine what the many trees I'm walking by would be singing if they got the chance.


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The State Initiative for the Development of Scientific and Economic Excellence (LOEWE) is the central research funding programme of the State of Hessen. In the 11th funding season, a new LOEWE centre and five new LOEWE priority programmes will now receive 46.3 million euros in funding over the next four years. The department of Electrical Engineering and Information Technology at TU Darmstadt is also involved in two of the five priority programmes.
Functional materials for energy storage
The new LOEWE priority programme „FLAME – Fermi Level Engineering Antiferroelectric Materials for Energy Storage and Insulators" investigates how the properties of functional materials can be adjusted via their electronic structure. The programme is coordinated by Prof. Andreas Klein from the Surface Science research group. Twelve working groups from the departments of Materials and Earth Sciences, Chemistry, and Electrical Engineering and Information Technology will develop functional materials for capacitors with high energy and power density, for example. The etit department will be represented in the new LOEWE priority programmes with the High Voltage Technology research group under the direction of Prof. Volker Hinrichsen.
Nature conservation through digital networking
The new LOEWE priority programme „Natur 4.0 – Comprehensive nature conservation monitoring through networked sensor technology and integrative data analysis" is located at the Philipps-Universität Marburg. In this priority programme, research will be conducted into how nature conservation can be made more efficient. The researchers are developing new methods for nationwide nature conservation monitoring. With the help of remote sensing and environmental sensors, nature conservation is to become more cost-effective. A more differentiated observation of nature conservation-relevant areas is also to be achieved. The department etit is involved in the new LOEWE priority programme Natur 4.0 with the research group Multimedia Communication under the direction of Prof. Ralf Steinmetz.


Question: What Is Google Glass Made Of?
Is Google Glass dead?
Google Glass is back from the dead, with a new $999 headset that delivers upgraded capabilities, longer battery life, and the promise of new confusion around augmented reality.
Come mid-2017, and a vaguely-massaged version of the Explorer Edition was reborn as the Glass Enterprise Edition..
What is the meaning of Google Glass?
Google Glass is a wearable computer featuring a head-mounted display in the form of eyeglasses. The Google glasses function as a hands-free smartphone, letting users access the mobile internet browser, camera, maps, calendar, and other apps by voice commands.
Why did Google Plus die?
The decision to kill off Google+ came after the discovery that a bug in Google+ exposed the personal data of nearly half a million users, with Google not disclosing it to the public until much later. Shortly after that, it was discovered that another security bug exposed personal data of more than 50 million users.
What glass is banned in the US?
Google GlassGoogle Glass Is Now Banned From All US Movie Theaters REUTERS/Elijah Nouvelage Movie fans will no longer be able to wear Google Glass and other wearable technology in US cinemas.
Why is Google Glass banned?
The Motion Picture Association of America and the National Association of Theatre Owners on Wednesday said they were officially banning the use of Glass and other wearable recording devices in the cinema as part of an updated "anti-theft policy." The MPAA has said the movie industry loses billions of dollars a year due …
Is Google Glass mixed reality?
After rising from the rubbish bin of great consumer tech that fell flat, Google Glass has pulled off an unexpected second act bringing mixed reality to the enterprise. Today, Google is launching Glass Enterprise Edition 2.0, an upgraded version of its enterprise headset that has a significant computing boost.
What can smart glasses do?
Most advanced smart glass systems can automatically provide information about a target in sight such as a product in hands, information about scenery and even facial recognition of a person coming towards. The user can communicate with the system for example with voice, signs or finger sweeps.
What Google Glass looks like?
The headset looks like a mix between a pair of standard black glasses and the goggles you wore in science class with the addition of a tiny camera and a glass prism that juts out in front of the wearer's right eye lens. Imagine having a small display floating toward the top of your line of sight.
What was wrong with Google Glass?
Unfortunately, the Glass failed because the creators neglected to define and validate the users and what problems it was solving for them. Instead they assumed the product would sell itself even without real solutions or value, that its hype would be enough to appeal to everyone.
What is Google Glass used for today?
Glass is now frequently used in the medical field, including surgery. More recently, Google Glass has been used when working with children with autism, in order to help them "see" emotions. A much better use for the glasses, clearly, than filming people in a bar, or showering with them.
Why did Google fail?
Lack of user engagement, inadequate changes, and software design errors – there are several reasons to mark its failure. Even though Google plus users refused to use Facebook, the latter gradually matured into a suitable option.
How much money did Google lose on Google Glass?
Google loses $895 million on moonshot projects. Google's parent company Alphabet is feeling pressure after the search engine's so-called moonshot projects have lost the company nearly $900 million in just three months.
Can you still buy Google Glass?
Well, you can now buy its successor, Google Glass 2, through resellers. But just because you can, doesn't mean you should. Google Glass has a rocky history. … Google is now allowing its resellers to offer Google Glass to just about anyone.
Who uses Google Glass?
It's used by companies including Deutsche Post DHL Group and Sutter Health. While the Glass is significantly cheaper than Microsoft's HoloLens 2, which costs $3,500, it's not as powerful: Google Glass only projects an image in front of one eye while the HoloLens headset displays projections for both eyes.
Why is Google+ slow to take off?
While Facebook and Twitter offered a neat mobile browsing experience, Google+ lagged. It did have a mobile version later but it was not good enough to compete with other social media. … Mobile for Google+ was said to be more of an afterthought then a carefully planned service.
Was Google Glass a good product?
Google Glass, wearable "smart glasses," is a Google "moonshot" technology. The product garnered considerable criticism, with concerns about its price, safety, and privacy. Glass seemed to lack the "cool" factor often associated with successful technology product rollouts.
What are the benefits of Google Glass?
Benefits of Google Glass Workers' safety is improved by the hands free feature and ability to stay connected to the network at all times. Another benefit is the fact that the head mounted display is always accessible in the user's field of vision.
What do Apple glasses do?
According to a Bloomberg report, the Apple AR Glasses will bring information from your phone to your face. Specifically, the eyewear "are expected to synchronize with a wearer's iPhone to display things such as texts, emails, maps, and games over the user's field of vision."
Who invented smart glasses?
Mars KapadiaMars Kapadia, a 16-year-old from Arizona, has devised his own concept for a pair of smart glasses—something at which big tech companies like Google have failed. A cheap Arduino Nano Every microcontroller is at the heart of the invention.


too warm makes it hard to sleep.
As if lying down and the possibility of feeling some acid reflux wasn't enough, spicy foods can make it all worse. The acidity can even make it harder for people with sleep apnea to catch some zzz's, because it may irritate the airways.
It's no secret that being warm often makes it harder to sleep. Researchers even theorized that maybe an increase in body temperature after eating extremely spicy food affects sleep quality. Tabasco sauce, for example, has an ingredient that can stimulate the metabolism.


Category:Kamarupa Kingdom
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Kamarupa, also called Pragjyotisha, was the first historical kingdom in Assam that existed between the 4th to the 12th century CE. Ruled by three dynasties from their capitals in present-day Guwahati and Tezpur, it covered the entire Brahmaputra river valley and, at times, North Bengal and parts of Bangladesh. Though the historical kingdom disappeared by 12th century to be replaced by smaller political entities, the notion of Kamarupa persisted and ancient and medieval chroniclers continued to call this region by this name. Coins of en:Alauddin Hussain Shah called the region Kamru or Kamrud.
Media in category "Kamarupa Kingdom"


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Tips for Keeping your Poultry Hydrated During Hot WeatherPosted: August 15, 2018
Water is essential in your poultry surviving the hot weather. Here are some tips for keeping your poultry hydrated during the summer months.
- Position water containers in the shade. If water is too hot (or too cold) chickens will not drink enough to keep egg production up.
- Adjust waterers to shoulder height. This will help keep the litter dry.
- If food, bedding or feces gets into drinking water, change it.
- Ducklings and goslings need access to fresh, clean drinking water. However, they love to play in water and will quickly soil it. Use a water dispenser that allows only their bills to enter. Put distance between their feed and water dispensers to prevent cross contamination.
- Grown ducks need access to water at least one or two inches deep in order to groom themselves.
- Ducks and geese do not require swimming water, but they must always have fresh drinking water available.
- Baby turkeys sometimes need extra coaxing to drink water. One trick is to put a few bright-colored marbles in their water. When they peck at the marbles, their beaks will slip into the water. Pretty soon, they'll get the hang of it. Remove the marbles before the birds get enough to swallow them.
Source material for this blog article was provided by Purina Mills, Inc. © 2007


Easiest Steps To Build A Face Filter App With Flutter and Deep AR
Face filter1.png Hello everyone, I'm excited to be sharing this article with you all.
At the end of this article, you will learn how to build a Face Filter App from scratch using Flutter and Deep AR.
So let start.
What is DeepAR?
DeepAR is a web platform that provides an SDK for Snapchat kind of 3D face filters, face lenses, and effects for any iOS, Android, Unity, or HTML5 app. The platform makes use of a technology called Augmented Reality (AR).
So what is Augmented Reality (AR)? Augmented Reality is a new technological system that allows introducing virtual contents and information onto the physical world as if they're actually there with you.
In other to build a Face Filter App from scratch using Flutter and Deep AR, you need to follow these simple steps below:
Step 1: Creating a new Flutter project.
You can create a flutter application using Visual Studio, IntelliJ, or Android studio.
After successfully creating a flutter project, Open "pubspec.yaml", and install the camera_deep_ar and path package.
 camera_deep_ar: ^0.0.1
Step 2: Create a Deep AR account.
Log on to _URL_ to create an account,
At the top right corner of the site click on "Sign Up", to create an account but if you have an account with Deep AR, click on "Log in".
1_0ujfcgCZNRC-9S2ZW9T8Og.png To "Sign Up" Deep AR only requires you to enter your email address and password.
1_0ujfcgCZNRC-9S2ZW9T8Og.png Once you have provided the necessary details required, Deep AR will send a link to the email address you provided while signing up.
1_bqi6oHADGEv_uQXYT0BzWw.png Click on the link sent to your email address and log into your Deep AR account.
1_bqi6oHADGEv_uQXYT0BzWw.png On successfully Log in, your Deep AR logged-in page will look like this image below.
Step 3: Creating a new Deep AR project.
To create a new Deep AR project, click on the + icon.
Note: For the sake of this tutorial, the number of monthly active users will be 10 which is Free.
When done, click on the "Get Started" button to navigate to the next screen.
1_bqi6oHADGEv_uQXYT0BzWw.png Next, we are going to name our Deep AR project "Flutter_with_DeepAR", click on the "I agree to terms and conditions" option, and click on "Create Project" to complete the project creation process.
Congratulations, you have successfully created your very first Deep AR project.
Step 4: Adding Deep AR to your android app.
Click on the "Add android app" button
On the App name field, enter "flutter_with_deepar", while the App ID will be "com.promise.flutter_deepar".
Note: To get the App ID for your Flutter project, goto android >> app >> build.gradle and copy the applicationId.
android {
 defaultConfig {
 applicationId "com.example.myapp"
 minSdkVersion 15
 targetSdkVersion 24
 versionCode 1
 versionName "1.0"
1_bqi6oHADGEv_uQXYT0BzWw.png Click on "Create app" to complete the Deep AR configuration for the android app.
1_bqi6oHADGEv_uQXYT0BzWw.png Note: Your Android App key should be kept private.
Step 5: Modifying your Flutter project.
Add this rule to your proguard-rules.pro file, to do so goto android >> app >> and create a new file, the name should be proguard-rules.pro, add these rules to your created proguard-rules.pro file
-keepclassmembers class ai.deepar.ar.DeepAR { *; }
-dontwarn android.**
-keep class io.flutter.app.** { *; }
-keep class io.flutter.plugin.** { *; }
-keep class io.flutter.util.** { *; }
-keep class io.flutter.view.** { *; }
-keep class io.flutter.** { *; }
-keep class io.flutter.plugins.** { *; }
Modify your build.gradle file, do that goto android >> app >> build.gradle file
defaultConfig {
 applicationId "com.promise.flutter_deepar"
 // MinSdkVersion should be set to 19 or above
 minSdkVersion 19
 targetSdkVersion 29
 versionCode flutterVersionCode.toInteger()
 versionName flutterVersionName
buildTypes {
 release {
 signingConfig signingConfigs.debug
 // add the proguard-rules.pro to your build.gradle file
Note: The minSdkVersion for android should be 19 and above while for iOS it's 10 and above.
Open the AndroidManifest.xml file and add the following permissions.

 android:required="true" />

Finally, Open your main.dart file and add this code below:
Test run your app using a physical device or an emulator.
Face filter 3.png Congratulation, you have built your first Face Filter App with Flutter and Deep AR.
If you found this article helpful and educating, please hit the clap button 👏 as many times as you can to show your support!
To get my latest updates and happenings from the world of Flutter, and mobile app development, follow me on Twitter, Facebook, Linkedin, and Github.
My name is Promise Amadi. I am a writer and Flutter Developer. I work with startups across the globe to build mobile solutions using Flutter. I'm open to collaboration on Flutter-based projects. Send an e-mail to.
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Error on a request to write a media location identifier during long backups to Deduplication folders across a WAN.
Article:TECH153943 | Created: 2011-02-22 | Updated: 2013-01-03 | Article URL
Article Type
Technical Solution
During a backup to a deduplication folder, when new media is required, an error pops up indicating that Backup Exec could not write a media location identifier (file mark) to the media. This can happen if the job is taking a long time to fill up a piece of media or complete a job (more than 30 minutes per media). During this time, Backup Exec holds open a session that is not transmitting any data. A variety of devices along the route between the remote agent and the media server can interpret this lack of data transmission as an abandoned session and arbitrarily terminate the session.
This problem typically happens at approximately the same amount of time into an operation. That is, if the job keeps failing at the the same times (e.g. 1.5 hours), then this may be the cause of the problem.
Storage device "Dedupe Folder:2" reported an error on a request to write a media location identifier (file mark). Error reported: A device attached to the system is not functioning.
 This issue is most often associated with a backup that is happening over a slow link (such as a WAN).
Turning on the Debug Monitor for active debugging (SGMon) shows the following errors
[5216] 09/09/10 13:34:22 ndmp_readit: Caught message on closed connection.
Socket 0xc2c len 0xffffffff
[5216] 09/09/10 13:34:22 ndmp_readit: ErrorCode :: 10054 : An existing
connection was forcibly closed by the remote host.
This indicates that one of Backup Exec's sessions from the remote agent to the media server was terminated. The next time this session is used to communicate between the remote agent and the media server, an error is reported.
Note: Refer the related article on how to use SGMON for debug.
Note: As of Backup Exec 2010 R3 Hotfix 159965, Backup Exec has implemented its own keep alive message across deduplication connections. After this Hotfix, it should no longer be necessary to set the system wide keep alive settings below.
There is a setting in Windows that causes the operating system to send "Keep Alive" messages across connections that are otherwise inactive. Set KeepAliveTime and KeepAliveInterval to five seconds (5000ms ). Please consult your Windows documentation for specific instructions on how to do this.
Note that while this has resolved the problem in most cases, there are situations where intervening routers are ignoring the keep alive messages and terminating the session after a set period of time any way. If this is happening, the configuration of those routers must be changed to resolve this problem.
Supplemental Materials
Backups failing due to expired sessions
Article URL
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Quick Answer: Does Vinegar Take Smell Out Of Clothes?
How do you get vinegar smell out of clothes?
Can you use vinegar and laundry detergent together?
Does white vinegar smell go away?
Vinegar is an inexpensive, natural cleaner and deodorizer. … The sharp odor of vinegar can be unpleasant for many people, even though it will go away as soon as it dries. That doesn't help if you are holding your nose, or even experiencing a gagging reflex from the vinegar scent.
What is the best thing to absorb odors?
Baking sodaBaking soda is very effective at absorbing odors from the air as well as from surfaces. Put baking soda in your trash can to eliminate orders, and sprinkle it on any surface an odor emits. Leave it on for an hour, then sweep it off. Baking soda can be used in your washing machine to get rid of odors in your clothing.
Why does it smell when I open my legs?
Why do my clothes still smell after washing?
When you do not use enough detergent bacteria can still thrive on your clothing and cause a smell. When you use too much detergent all you end up doing is trapping bacteria that is living on your clothes inside of thick, soapy suds that do not do much to clean the clothing in the wash.
How do you get bad smells out of clothes?
Add a cup of vinegar or a cup of baking soda to the wash to combat odors. Consider using a clothesline to dry your clothes outside to get a fresh outdoors scent. Use half a cup of pine-scented cleaner in the washer (the pine smell will be eliminated after a cycle in the dryer). Put musty, dry clothing in the freezer.
How does vinegar deodorize laundry?
Use vinegar to deodorize clothes. If you have smelly clothes, add 1/2 to 1 cup of vinegar straight to the washer during the last rinse cycle. This will remove the smells from your clothes, without making them smell like vinegar.
Does baking soda remove odor from clothes?
Adding 1/2 cup of baking soda to the rinse cycle helps to remove odors from clothes (and shoes) and also softens them naturally. … If your clothes smell like sweat or smoke, it's best to let them soak in a baking soda solution overnight. Soaking gives the baking soda time to go to work as a deodorizer.
Is baking soda or vinegar better for laundry?
How do hotels keep towels so white?
Add Baking Soda in the Wash Cycle Along with the normal amount of laundry detergent, add about a half cup of baking soda to every load of white towels. The baking soda will activate with the water and laundry detergent to keep your towels looking brighter and will also help pull out any stains.
Where do you put vinegar in laundry?


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I have seen that $x^{2}+x+1$ and $x^{4}+x+1$ are irreducible over $\mathbb{Z}_2$ and I thought a polynomial of the form $x^{2^m}+x+1$ for $m\ge3$ would be irreducible too. However using WolframAlpha, my hunch was wrong. It could be factored over $\mathbb{Z}_2$. WolframAlpha could only generate the factors for $m=3,\ldots, 13$ and so far, I observed that for odd $m$, my polynomial is divisible by $x^{2}+x+1$.
I want to see how one can show that $x^{2^m}+x+1$ for $m\ge3$ is reducible.
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4 Answers 4
up vote 12 down vote accepted
I will write $\mathbb F_2$ rather than $\mathbb Z_2$; here the $\mathbb F$ stands for "finite field" and the subscript is the number of elements in the finite field. This notation is convenient when one wants to consider larger finite fields, as I will in this answer.
The polynomial $x^2 + x + 1$ splits in the field $\mathbb F_4$ with $4$ elements; its two roots are the two elements of $\mathbb F_4$ that aren't in $\mathbb F_2$. Now if $\alpha \in \mathbb F_4$ then $\alpha^4 = \alpha$. Thus if $n = 2 m + 1 $ is odd, we have that $$\alpha^{2^{2m + 1}} = (\alpha^{4^m})^2 = \alpha^2,$$ and so $$\alpha^{2^{2m+1}} + \alpha + 1 = 0.$$ Consequently each of the two roots of $x^2 + x + 1$ is also a root of $x^{2^{2m+1}} + x + 1$ as well, which explains why $x^2 + x + 1$ divides $x^{2^{2m + 1}} + x + 1.$
To handle the general case of $x^{2^n} + x + 1$ (i.e. the case when $n$ is not necessarily odd) it helps to recall some Galois theory for finite fields. The key fact is that if $\alpha$ lies in any finite extension field of $\mathbb F_2$, namely some $\mathbb F_{2^f}$ for some $f \geq 1$, then the algebraic conjugates of $\alpha$ are all of the form $\alpha, \alpha^2,\alpha^4, \ldots.$ (This list will be finite, because --- assuming I chose $f$ minimally --- then $\alpha^{2^{f-1}} \neq \alpha,$ but $\alpha^{2^f} = \alpha$, and so $\alpha$ has exactly $f$ distinct conjugates over $\mathbb F_2$.)
Now suppose that $\alpha$ satisfies $$\alpha^{2^n} + \alpha + 1 = 0.$$ Adding $\alpha + 1$ to both sides (and remembering that $ 1 = - 1$ because we in characteristic $2$) we find that $$\alpha^{2^n} = \alpha+1.$$ Hence $$\alpha^{2^{2n}} = (\alpha^{2^n})^{2^n} = (\alpha + 1)^{2^n} = \alpha^{2^n} + 1 = (\alpha +1)+1 = \alpha$$ (using the facts that $(a+b)^2 = a^2 + b^2$ and $1 + 1 = 0$, which both hold in characteristic $2$).
So we see that the "$f$" for $\alpha$ is at most $2n$, i.e. $\alpha$ has at most $2n$ distinct algebraic conjugates over $\mathbb F_2$, and so its minimal polynomial over $\mathbb F_2$ has degree at most $2n$. Since $\alpha$ is a root of $x^{2^n} + x + 1$, this minimal polynomial divides $x^{2^n} + x + 1$. If $n \geq 3$, then $2n$ is strictly less than $2^n$, and so this minimal polynomial of $\alpha$ also has degree strictly less than that of $x^{2^n} + x + 1$. Thus when $n \geq 3,$ the polynomial $x^{2^n} + x + 1$ must be reducible.
share|improve this answer
@ Matt E: How do show that polynomial $x^2+x+1$ splits in $\mathbb{F}_4$? – boj54 Mar 21 '11 at 14:10
_USER_ For instance $x^4 - x = \prod_{u\in\mathbb F_4} (x-u) = x(x+1)(x^2+x+1) $. – Myself Mar 21 '11 at 14:19
you could make it by definition. it's irreducible over $\mathbb{F}_2[x]$ so $\mathbb{F}_4\cong\mathbb{F}_2[x]/(x^2+x+1)$ – yoyo Mar 21 '11 at 14:19
@ Myself: I got it. Thanks. – boj54 Mar 21 '11 at 21:10
_USER_: Dear boj54, This was a typo, now fixed. Regards, – Matt E Mar 22 '11 at 5:08
I would like to present a solution that is completely different from Matt E's method. The starting point is the numerical observation (which I found with PARI) that when you factor $x^{2^n} + x + 1$ in ${\mathbf F}_2[x]$ the number of irreducible factors that occur for $n = 1, 2, 3,...,11$ is $$ 1, 1, 2, 2, 4, 6, 10, 16, 30, 52, 94. $$ The striking thing about those numbers after the second one is that they are all even. The lesson here is that when you were looking at data to understand why these polynomials were usually reducible, you should not only have been looking for some "obvious" irreducible factor, but also at the number of irreducible factors. Without showing there is any one particular "obvious" irreducible factor I am going to explain why, for $n \geq 3$, $x^{2^n} + x + 1$ must have an even number of irreducible factors in ${\mathbf F}_2[x]$. That will show this polynomial is reducible in ${\mathbf F}_2[x]$, since an irreducible polynomial has only one irreducible factor.
In elementary number theory, there is a standard function which counts the parity of the number of prime factors of a positive integer. It's called the Möbius function and is defined as follows: for a positive integer $N$, $$ \mu(N) = \begin{cases} 0, & \text{ if } N \text{ has a multiple prime factor}, \\ (-1)^r, &\text{ if } N = p_1\cdots p_r \text{ where the } p_i\text{'s} \text{ are distinct primes}. \end{cases} $$ So $\mu(N) = 1$ if $N$ is a product of an even number of distinct primes (in particular, $\mu(1) = 1$ using $r = 0$) and $\mu(N) = -1$ if $N$ is a product of an odd number of distinct primes, while $\mu(N) = 0$ if there is some prime factor of $N$ appearing more than once (e.g., $\mu(12) = 0$ since 2 is a factor of 12 twice). So the Möbius function really only counts the parity of the number of prime factors of squarefree positive integers. For any prime $p$, $\mu(p) = -1$. Therefore if $\mu(N) = 1$ then $N$ is definitely not a prime number.
The catch with the Möbius function is that there's no known way to figure out what $\mu(N)$ is without essentially factoring $N$. Well, to be on the safe side, let me just say that if we know $N$ is squarefree, so $\mu(N) = \pm 1$, then figuring out whether $\mu(N)$ is $1$ or $-1$ can't be done without factoring $N$. Put simply, there is no formula for $\mu(N)$ other than its definition. (Of course, if you haven't seen the Möbius function before, then another catch is that it looks like a completely crazy function. Why is it significant? The reason is the Möbius inversion formula, in which the Möbius function plays a prominent role. One of its


text:
This will really impress your friends, but really isnt that difficult.
Short Crust Pastry - 500g
Cooking Apples 2 medium
- Cut the pastry in half and roll each half into a ball.
- Drop the first ball onto a floured surface and roll out until it is the same size as the oven proof plate you are using
- Place the rolled pastry onto the plate. Crack the egg into a cup and whisk lightly. brush the surface of the pastry with the egg to prevent the base going soggy during cookinig
- Peel the apples, cut into quarters and remove the core. cut into thin slices about 3mm thick.
- Arrange the slices into a layer on the pastry (leaving the edge clear) and sprinkle with a third of the sugar. Add a second layer, more sugar and so on until you have used all the apple.
- Roll out the second ball of pastry on a flored surface, and lay on top of the pie.
- Gently press down the edges to make the top stick to the bottom pastry.
- Finally, brus some remaining egg over the top
- Pop into the oven at 180 C for about 40 mins. When you take it out, check if the apple is soft by gently inserting a knife or skewer. Return the the oven for a further 10 mins if the apple isnt soft enough.


text:
ICE-ISLAND in Mid-Atlantic Proposed (Oct, 1932)
ICE-ISLAND in Mid-Atlantic Proposed
SEADROMES for ocean landing fields are not a new idea, a steel 'drome designed by Edward Armstrong, recently described in these pages, being well on the road to practical acceptance. But the proposal to build seadromes of ice, recently advanced from Germany, seems fantastic until one realizes that the idea has already passed the experimental stage with flying colors.
The German scientist Dr. Gerke of Waldenburg two years ago erected an ice island in Lake Zurich by artificial means, which endured six days after the refrigerating machinery was switched off. His proposal for a mid-Atlantic way station of ice involves the construction of a framework of hollow tubing which; when filled with liquid air manufactured in a refrigerating plant, freezes the water surrounding it into a solid mass.
Design of the island would call for a section on which a landing field and buildings for offices and refrigerating plants could be built.


text:
Debugging Multi-Core STM32 Devices with VisualGDB
This tutorial shows how to debug the multi-core STM32H7 devices featuring both an ARM Cortex-M7 and an ARM Cortex-M4 core. We will create 2 projects, one for each core, and will show how to configure our OpenOCD fork to automatically debug both cores at the same time. We will use the STM32H7-Discovery board featuring the STM32H747XI device, however the steps shown in this tutorial will work for other multi-core STM32 devices as well.
Before you begin, install VisualGDB 5.5 or later.
- Start Visual Studio and open the VisualGDB Embedded Project Wizard:
- First, we will create a project for the Cortex-M7 core. Specify the name and location for the new project:
- On the first page of the VisualGDB's wizard select "Create a new project -> Embedded Binary -> MSBuild" and click "Next" to proceed to the next page:
- On the next page select the ARM toolchain and pick your device from the list. Note that the multi-core devices will have 2 entries for each core (in this example, STM32H747XI corresponds to the Cortex-M7 core, while STM32H747XI_M4 corresponds to the Cortex-M4 core):
- On the next page pick the LEDBLink (HAL) example and specify the port/pin of the on-board LED. The STM32H7-Discovery board has 4 LEDs connected to ports PI12, PI13, PI14 and PI15, so we will select PI12 for the Cortex-M7 project and PI13 for the Cortex-M4 one:
- Connect your board to the USB port and select it in the "Debug Using" field. Ensure that the "Debugged Device" is detected as "STM32H7xx (Cortex M7 + M4)" and that you can select a specific core below. If not, update your OpenOCD package to the latest version using Tools->VisualGDB->Manage VisualGDB Packages:Note: for the best multi-core debugging experience we recommend selecting the ST fork of OpenOCD as shown above.
- Press "Finish" to create the project for the Cortex-M7 core. Build it by pressing Ctrl-Shift-B:
- Now we will create a project for the Cortex-M4 core. Launch another Visual Studio instance and open the VisualGDB Project Wizard again:
- This time, select the STM32H747XI_M4 device:
- Also choose PI13 instead of PI12 as the LED port:
- On the Debug Settings page select the Cortex-M4 core instead of the default Cortex-M7 one: Make sure you also uncheck the "reset device" flags, as otherwise starting a debug session with the Cortex-M4 core will reset the Cortex-M7 core.
- Now you can start debugging both projects, letting each core control one of the on-board LEDs:
- Set a breakpoint in the for() loop of the Cortex-M7 project and press F5 in its Visual Studio instance to start debugging. Wait for the breakpoint to trigger:
- Switch to the Visual Studio instance that has the Cortex-M4 project open, set a breakpoint there and start debugging it as well:The second Visual Studio instance will automatically connect to the OpenOCD session used by the first one, taking control of the Cortex-M4 core.
- The 2 Visual Studio instances will allow debugging the 2 cores of the STM32H7 device completely independently. E.g. resuming or halting one core will not affect the other one: Note that the cores share the same memory space (FLASH and RAM), however the code for them does not overlap. I.e. each core has its own copy of the main() function, HAL_Delay() function, etc., located at different locations in the FLASH memory. Similarly, each core has its own stack in the RAM that must be placed separately from the other core's stack. You can use the VisualGDB's Embedded Memory Explorer to explore the memory layout of each of the 2 projects and to understand the memory addresses used by each of them:
Note that in this tutorial both cores start and run independently. In most practical cases, the Cortex-M7 core would control the Cortex-M4 core, that requires additional debugger setup. See this tutorial for detailed instructions.


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I'm comparing two databases using liquibase integrated with ant. But the output it is generating is like generic format. It is not giving sql statements. Please can any one tell me how compare two databases using liquibase integrated with ant or command line utility.
Explain me with some example.
Thanks in advance, Bhasker.
share|improve this question
Obtaining the SQL statements, representing the diff between two databases, is a two step operation:
 1. Generate the XML "diff" changelog
 2. Generate SQL statements
Example
This example requires a liquibase.properties file (simplifies the command-line parameters):
classpath=/path/to/jdbc/jdbc.jar
driver=org.Driver
url=jdbc:db_url1
username=user1
password=pass1
referenceUrl=jdbc:db_url2
referenceUsername=user2
referencePassword=pass2
changeLogFile=diff.xml
Now run the following commands to create the SQL statements:
liquibase diffChangeLog
liquibase updateSQL > update.sql
A nice feature of liquibase is that it can also generate the rollback SQL:
liquibase futureRollbackSQL > rollback.sql
Update
Liquibase does not generate a data diff between databases, only the schema. However, it is possible to dump database data as a series of changesets:
liquibase --changeLogFile=data.xml --diffTypes=data generateChangeLog
One can use the data.xml file to migrate data contained in new tables.
Update 2:
Also possible to generate liquibase changesets using groovy.
import groovy.sql.Sql
import groovy.xml.MarkupBuilder
//
// DB connection
//
this.class.classLoader.rootLoader.addURL(new URL("file:///home/path/to/h2-1.3.162.jar"))
def sql = Sql.newInstance("jdbc:h2:db/db1","user","pass","org.h2.Driver")
//
// Generate liquibase changeset
//
def author = "generated"
def id = 1
new File("extract.xml").withWriter { writer ->
 def xml = new MarkupBuilder(writer);
 xml.databaseChangeLog(
 "xmlns":"_URL_
 "xmlns:xsi":"_URL_
 "xsi:schemaLocation":"_URL_ _URL_
 ) {
 changeSet(author:author, id:id++) {
 sql.eachRow("select * from employee") { row ->
 insert(tableName:"exmployee") {
 column(name:"empno", valueNumeric:row.empno)
 column(name:"name", value:row.name)
 column(name:"job", value:row.job)
 column(name:"hiredate", value:row.hiredate)
 column(name:"salary", valueNumeric:row.salary)
 }
 }
 }
 }
}
share|improve this answer

Thank u so much. – bhasker Dec 13 '11 at 8:39

hiee I'm able to see the diff but if a table is missing it will just create the table , but wont copy the table data from source db to target db. Is there any solution for that – bhasker Dec 26 '11 at 5:56

No not a complete solution. I've update my answer to indicate how the data can be dumped as a series of changesets. This generated data can be used to load new tables in the the new database. – Mark O'Connor Dec 26 '11 at 17:16

Thank you so much for your help connor. – bhasker Dec 27 '11 at 7:24

hiee after executing the command it gives java heap space error. I tried setting java heap size as %JAVA_OPTS% -Xms512m -Xmx1024m -XX:MaxPermSize=1024m. Can u plz help me in this? – bhasker Dec 27 '11 at 8:50
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text:
Yes, scientists are studying your poop to track new COVID-19 variants. Here's how it works
In Oklahoma, some COVID-19 research starts with your poo.
Technically, the human waste collected at wastewater treatment plants and sewer pipes around the state are tested for the presence of coronavirus, which gives health officials a clearer picture of how the virus has spread.
Samples collected in January, for example, showed that three emerging variants of concern had arrived in Oklahoma.
"People start shedding the virus in their feces soon after infection, about the same timing that you can detect it in the nasal pharyngeal swab," said Brad Stevenson, associate professor of microbiology at the University of Oklahoma. "The concentrations are high enough that we can detect (virus from) an individual in a building or individuals in a neighborhood, of course citywide as well."
How the project got started
The project began at OU in Stevenson's lab using samples collected from dormitories. It expanded statewide with help from OU Health and the Oklahoma Medical Research Foundation and the Oklahoma City-County Health Department.
Raw sewage is sampled from wastewater treatment plants in Oklahoma City, Midwest City, Norman, Anadarko and Tulsa, and from sewer manholes at 14 locations across Oklahoma City.
Wastewater treatment plants are used to sanitize human waste, and in many cases, allow it to re-enter the watershed safely. Biosolids are separated and often used as fertilizer.
Using poop to identify COVID hotspots
Jason Vogel, director of the Oklahoma Water Survey and professor in the OU School of Civil Engineering and Environmental Science, said the sewage surveillance project isn't meant to identify individual cases of COVID-19.
"It's really meant to be a planning tool and to identify hot spots, and also to look at trends over time — especially when we get to the wastewater treatment plant level," Vogel said. "That could be a conglomerate of 50,000 or 100,000 or more people, but over time we can look at trends and see how the population is doing."
Scientists have analyzed wastewater for decades to measure, on a large scale, what humans put into their bodies. Samples can show what kinds of pharmaceuticals or illicit drugs are being used, or detect the emergence of disease. Stevenson said Oklahoma's project builds on the work of others.
Sharing Oklahoma's COVID-19 data
"One of the things that's been really remarkable during the pandemic is that scientists all over the world have been sharing their data really openly, their experiences, their successes and failures and limitations," he said. "And so I'm participating in more open science now than ever before."
The project launched at a time when state epidemiologists faced challenges on drawing conclusions based only on individual test results and case reports. That's where the program's value lies, said Oklahoma City-County Health Department Chief Operating Officer Phil Maytubby.
Recent sewage surveillance shows a marked discrepancy between positive clinical test results and the presence of coronavirus in wastewater, meaning that there likely are more people walking around with COVID-19 than test results indicate.
Are Oklahomans with COVID-19 going untested?
"We think that there may be a lot more asymptomatic people out there that really don't know they have COVID so they haven't even sought out testing," Maytubby said. "Actually we've been working on messaging around that because right now the allergies are so bad for a lot of folks right now. They may think they have allergies and they may have COVID."
The health department soon will open vaccine sites targeted to specific geographic populations based on the data collected from wastewater.
Sewage surveillance isn't 100% conclusive, Maytubby added, but it does give health officials a good idea of what's going on. This technology could also be used in the future, whether it's monitoring for another wave of coronavirus or other diseases that afflict Oklahomans.
"It's going to be a great early warning system if we get any new novel viruses that are out there. As long as there's a way to test them, we can check that," he said.
Staff writer Dale Denwalt covers technology, aerospace and Oklahoma business news for The Oklahoman. Have a story idea for Dale? He can be reached at _EMAIL_ or on Twitter at @denwalt. Support Dale's work and that of other Oklahoman journalists by purchasing a digital subscription today at subscribe.oklahoman.com.


What data can be backed up in FusionInsight HD?
4
FusionInsight HD provides backup functions for system and user data within each component. The data mainly includes databases and configuration files for the Manager component, user information, DBService metadata, HBase user service data, and HDFS metadata and user service data.
Other related questions:
Data that can be backed up and restored within a FusionInsight HD environment
FusionInsight HD provides backup functions for system and user data within each component. The data mainly includes databases and configuration files for the Manager component, user information, DBService metadata, HBase user service data, and HDFS metadata and user service data.
Method used to back up MQ data in a FusionInsight Farmer environment
MQ information is persistently stored on an SSD. When an exception occurs, SSD data can be automatically collected if the SSD is unformatted. The cluster does not provide independent MQ data backup and restoration functions.
Failed to Back Up System Configuration Data
1.Use PuTTY to log in to the OceanStor BCManager node. Use the Management IP address to log in as user ICUser. 2.Run the following command to disable logout on timeout. TMOUT=0 NOTE: After you run this command, the system continues to run when no operation is performed, resulting a risk. For security, run exit to exit the system. 3.Run the following command and enter the password of user root to switch to user root: su - root 4.Run the following command to go to the directory of the configuration file. cd /etc/ssh 5.Run the following command to open the configuration file. vi sshd_config 6.Press I to enter the editing mode. 7.Change parameter values in the configuration file, as shown in the following: PermitRootLogin yes PasswordAuthentication yes PermitEmptyPasswords no ChallengeResponseAuthentication no UsePAM yes 8.Press ESC and enter :wq to save the settings and exit the VI editor. 9.Run the following command to restart the sshd service. service sshd restart 10.After the next backup point in time, check whether the backup failure alarm has been cleared. If yes, no further action is required. If no, contact technical support.
What modes can interfaces be backed up
Interface backup supports the master/slave and load balancing backup mode. From V200R001C01, interface backup supports the following association modes: association between interface backup and NQA, interface backup and BFD, and interface backup and routing.
Method used to back up data on the USG6000
The methods used for backing up configuration content and restoring the configuration are as follows: 1. Back up and restore profiles using the FTP, SFTP, and TFTP servers (recommended). This method is applicable to the situation in which a large number of devices are maintained in a centralized manner. 2. If the device serves as an FTP server, you can configure the FTP server function for configuration backup and restoration without configuring FTP software. Open FTP ports cause certain potential security risks. 3. Back up the profiles on the storage server. The operation is simple and does not require other software. If the data is backed up on the same storage media, the primary and backup profiles may be damaged simultaneously. 4. The configuration data backup and restoration on the web UI is simple. You need to configure the web login in advance.
If you have more questions, you can seek help from following ways:
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Do You Really Understand the Financial Position of Your Construction Contracting Business?
If you're like many people who own construction contracting and service businesses, you likely have little to no financial training. That's OK, you probably have a slew of other skills which allowed you to move into the realm of business owner.
It is also likely that you put a lot of time and thought into knowing where your crews are, what they're doing, and which tools and supplies they'll need for the day. Yet, you may be less likely to know where your dollars are, what job each dollar has, and how well they're pulling for the team.
Run a better construction contracting business
While business management is a multi-faceted matter, one of the best ways you gain acumen in the business world is to know and understand how to make best use of the money you control. You know you're "getting it" when you can:
 - Grasp the benefits of Job Costing
 - Discern the difference between Revenue and Gross Profit
 - Recognize the importance of Document Management
 - Increase your savvy in the Budgeting department
 - Focus on the Important Data
Getting to the money matters part of accounting means you can know (not just guess) when to put your marketing dollars to use or which types of jobs will never be your friend. It means you can make sense of what was once a whirlwind of numbers and terminology.
Why build your money management skills?
Develop your money management expertise so you can help your construction contracting or service business prosper. When you see where your company's money is actually going, you're better able to build a path toward success.
How Schulte and Schulte fits in
Our goal is to assist you in creating an easy to follow and understand bookkeeping process. Further, we explain what is happening along the way, giving you the benefit of discerning your financial standing and taking advantage of that knowledge.
Let's build this together. Call _PHONE_ or get in touch here.


can tell, there is no given formula. I merely read the graph to come up with my numbers. $\endgroup$ – Dave Coffman Sep 7 '17 at 20:14
This is another chance to use one of my favorite approximations ever! I first offered it as an answer to a question about how deep a platform diver will go into the water. Now is the chance to use it again!
Issac Newton developed an expression for the ballistic impact depth of a body into a material. The original idea was expressed for materials of approximately equal densities when the ballistic body is moving fast enough for the target material to behave as a fluid (think cannon ball into dirt, meteorite into lunar regolith, etc). For a human body into snow, we can assume it will behave in a granular enough fashion.
The human body has a density of roughly $985 kg/m^3$. Using the two limits for the density of snow provided in another answer to this question, snow has a density between $300$ and $900 kg/m^3$. Let's assume the characters are 5 feet tall (you can easily change the number used, it's not a complicated formula). This gives us two limiting expressions:
$$d = 5 \times 985/300 = 16.4~\text{feet}$$
$$d = 5 \times 985/900 = 5.5~\text{feet}$$
So it really would depend on the actual density of the snow, but if you assume that it starts out around $300 kg/m^3$ and can reach a maximum of $900 kg/m^3$, we can assume that the final depth will be close to the same as assuming the average value as $600 kg/m^3$ which would give:
$$d = 5 \times 985/600 = 8~\text{feet}$$
That will give you a pretty good idea of the penetration depths over that range of densities. These numbers are all pretty close to what is given assuming the ideal deceleration given by this answer.
If you want to do a much more complicated analysis of penetration depth, check out the other, more detailed answer to the platform diver question. There it is actually shown that the penetration depth approaches this Newtonian approximation pretty well! It is also interesting to note that the penetration depth does not depend on the impact velocity/original height. Assuming one is going "fast enough" for the material to behave like a fluid, the expression seems to hold.
 - 2
 $\begingroup$ "the girls are 5 feet tall" - Anna is female, Kristoff is male, and listed as "tall": disney.wikia.com/wiki/Kristoff $\endgroup$ – mskfisher Feb 26 '15 at 12:01
 - $\begingroup$ _USER_ Yeah... Like I said, never saw it and my ignorance is showing... $\endgroup$ – tpg2114 Feb 26 '15 at 17:02
Nice theoretical answers (I can certainly appreciate them, I'm a mathematician). But why delve into theory when experiment is available? In this video you can see a skier jump from more than 200 feet and get head first into the snow, without a helmet.
The video starts with the aftermath, if you want to see the jump right away fast forward to about 1 minute into it.
 - $\begingroup$ Spoiler: the linked clip title indicates this was a planned world-record attempt. He goes in head-first and is buried far enough that only his skis are showing. The voiceover from the paramedic (who was standing by) is that he split his lip but is otherwise fine. The clip ends with the skier slaloming off down the rest of the hill. $\endgroup$ – brichins Sep 5 '17 at 21:59
About 50 years ago in Reader's Digest there was an article about a Soviet airplane pilot who bailed out at high altitude. He fell into a snow-filled ravine and survived. If the angle of the snow is high enough it is no big deal. At Squaw Valley I have seen skiers do drops that might have been 100 feet. If the landing is steep enough it is OK. It is "flat landings" that will get you.
Rock climber Lynn Hill fell 100 feet onto a dirt slope. She not only survived, she recovered completely.
Stunt men do quite high jumps onto airbags. 100 feet onto 20 feet of snow seems possible, but I wouldn't try it if I had any alternative.


text:
What is a Shuttle Roller Coaster?
A shuttle roller coaster is any roller coaster which does not make a complete circuit, but instead reverses and travels the track backwards. Some of the first shuttle coasters were the King Kobra at Kings Dominion (1977 – 1986) and Black Widow at Riverside Park (1977 – 1999). Early shuttle coasters featured a solo vertical loop. Because of their size and relatively low cost, shuttle coasters are often relocated from one amusement park to another amusement park. Steel Venom's recent move from Geauga Lake to Dorney Park and Pleasurewood Hill's relocated Wipeout are some recent examples of shuttle coasters on the move.
Shuttle coasters are a dime a dozen these days. Vekoma's Boomerang model is one of the most popular types of shuttle coasters. It consists of a boomerang loop, (which includes two back-to-back inversions) and then a vertical loop. Riders experience the 3 loops forwards and then backwards. According to RCDB, there are about 40 Vekoma Boomerangs currently in operation around the world.
More recently inverted shuttle coasters, where trains travel below the track, have come onto the scene. Six Flags America's Two Face: The Flip Side is an inverted shuttle coasters were riders face each other during the three loops. The last development in shuttle coasters incorporates the LIM launch technology that blasts trains from 0 to 70 in a matter of seconds. Intamin calls these U-shaped coasters Impulse coasters. The aforementioned Steel Venom, Cedar Point's Wicked Twister, and Six Flags Great America's Vertical Velocity are examples of the latest and greatest shuttle coasters.
Got a suggestion for Coasterology 101? Leave a comment below.


text:
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An allotropic form of iron which is stable at high temperatures. It is used in the manufacture of Austenite.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a nonmagnetic allotrope of iron that is the basis of austenite; stable between 906 and 1403 degrees centigrade
Sorry, no etymologies found.
Sorry, no example sentences found.


text:
(2013). Connected learning in the library as a product of hacking, making, social diversity and messiness. Interactive Learning Environments.
Learning is most effective when intrinsically motivated through personal interest, and situated in a supportive socio-cultural context. This paper reports on findings from a study that explored implications for design of interactive learning environments through 18 months of ethnographic observations of people's interactions at "Hack The Evening" (HTE). HTE is a meetup group initiated at the State Library of Queensland in Brisbane, Australia, and dedicated to provide visitors with opportunities for connected learning in relation to hacking, making and do-it-yourself technology. The results provide insights into factors that contributed to HTE as a social, interactive and participatory environment for learning – knowledge is created and co-created through uncoordinated interactions among participants that come from a diversity of backgrounds, skills and areas of expertise. The insights also reveal challenges and barriers that the HTE group faced in regards to connected learning. Four dimensions of design opportunities are presented to overcome those challenges and barriers towards improving connected learning in library buildings and other free-choice-learning environments that seek to embody a more interactive and participatory culture among their users. The insights are relevant for librarians as well as designers, managers and decision-makers of other interactive and free-choice-learning environments.
Via Elizabeth E Charles


text:
No Sign of Superbugs in Isolated Polar Bears
(HealthDay News) -- Scant evidence of antibiotic-resistant superbugs has been found in the droppings of Arctic polar bears that are isolated from humans, potentially suggesting that humans are responsible for the spread of such germs in the animal kingdom at large.
"The presence of antibiotic resistance genes has previously been described in bacteria taken from the feces of deer, foxes, pigs, dogs and cats," study researcher Trine Glad, of the University of Tromso in Norway, said in a news release. But the researchers wondered if the germs would show up in the Barents Sea area, where humans are rare.
In an examination of fecal samples and rectal swabs that were taken from 10 polar bears in 2004-2006, the researchers looked for genes that make germs resistant to antibiotics.
"This enables us to study an ecosystem with little human impact and should allow us to determine whether these genes are naturally occurring or are caused by exposure to human antibiotics," Glad explained in the news release.
The researchers found little sign of germs that have some immunity to antibiotics, according to their report, published Jan. 14 in the online journal BMC Microbiology.
The U.S. Centers for Disease Control and Prevention provides information on antibiotic resistance. _URL_


-o test4 host%./test4 the song is 210 seconds long and was made in 2004 the song is 256 seconds long and was made in 1992 the song is 223 seconds long and was made in 1997 host%
The value of a variable can change as a program runs. By contrast, a constant is assigned a value once in the declaration, and that value can't change until the program is restarted.
const float goldenRatio = 1.618; const int daysInWeek = 7;
You can have a constant version of any of the standard C variable types. The only trick is that you have to supply a value when you create the variable.
We could spend a lot of time on enums, but in the spirit of focusing on the relevance to Cocoa, we're going to make this really, really simple.
Here's an enum from Cocoa's NSString class which defines text search options:
enum { NSCaseInsensitiveSearch = 1, NSLiteralSearch = 2, NSBackwardsSearch = 4, NSAnchoredSearch = 8, NSNumericSearch = 64 };
Apple uses enums in Cocoa to group a series of related constants. This is often used as a way to set a "mode" for a particular function. The values of the constants don't really matter, just the name.
Here's an example of an enum in use. Don't worry about understanding what this code does, just focus on how the enum is being used:
[string compare:anotherString options:NSCaseInsensitiveSearch]; [string compare:anotherString options:NSLiteralSearch];
The stdio.h file included in every example is a header file for part of the standard C library. A library is a collection of reusable code. It can define things like functions, structs, constants and enums.
There are thousands of third party C libraries available. Some are free and come with.c source files. Others require a fee and provide header files and documentation but no source code.
Library Diagram
To use a third party library, you have to compile and "link" to it. For example, if I wanted to write a C program that could talk to a MySQL database, I could link to the libmysql library and include its headers in my program.
When you use code created by others, it's important to know what the terms of use are. Some licenses, for example, may require you that share all of the source code for your application.
If you're feeling adventurous, take a look in /usr/include, which is a standard place for C header files.
Final Example
Here's a final program that uses almost all of the concepts from this tutorial. You need to have the following files from before:
math_functions.h - math function declaration
math_functions.c - math function implementations
song.h - Song struct and related function declarations
song.c - implementation of the Song functions
Paste the contents of this example into a file called final.c
_TAG_ _TAG_ "math_functions.h" _TAG_ "song.h" main () { const int numberOfSongs = 3; printf ("total number of songs will be: %i\n", numberOfSongs); int i; for (i = 0; i < numberOfSongs; i++) { printf ("loop trip %i ", i); } printf ("\n"); Song song1 = make_song (223, 1998); Song song2 = make_song (303, 2004); Song song3 = { 315, 1992 }; display_song (song3); int combinedLength = sum (song1.lengthInSeconds, song2.lengthInSeconds); printf ("combined length of song1 and song2 is %i\n", combinedLength); float x = (float) song1.lengthInSeconds; float y = (float) song2.lengthInSeconds; float z = (float) song3.lengthInSeconds; float averageLength; averageLength = average (x, y, z); printf ("average length is: %f as a float ", averageLength); printf ("and %i as an int\n", (int) averageLength); }
This example may look complex, but it's just repetition of the same concepts. If there's anything here that doesn't make sense, go back and read the previous sections.
Compile the Example
Make sure you have the four files previously mentioned plus final.c, all in the same directory. Switch to Terminal and change to the directory which contains the files. Enter the command gcc final.c song.c math_functions.c -o final.
Type./final to run the program
host% gcc final.c song.c math_functions.c -o final host%./final total number of songs will be: 3 loop trip 0 loop trip 1 loop trip 2 the song is 223 seconds long and was made in 1998 the song is 303 seconds long and was made in 2004 the song is 315 seconds long and was made in 1992 combined length of song1 and song2 is 526 average length is: 280.333344 as a float and 280 as an int
Wrap Up
We've covered a lot of ground in a relatively small amount of space. If you understand the code in the final example, you should be ready to start learning the basics of Objective-C and Cocoa.
As you do more programming, you'll need to look into some more advanced topics such as pointers and memory management. Some starting points for those are listed below.
Theocacao: C Memory and Arrays
Theocacao: C Pointers and Dynamic Memory
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