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Wed Sep 12 2018
Measuring startup times
OverviewLink Icon
As a video platform, you want to deliver video content to your audience as fast as possible: The earlier a video starts playing, the more likely your audience will watch the video.
Therefore it's crucial to optimize video startup time and to identify potential delays. The Bitmovin Analytics API provides you with all the tools you need. In this article we'll show you how to use them.
Different startup timesLink Icon
The Analytics API distinguishes between three types of startup times:
 1. Player startup time
 2. Video startup time
 3. Startup time
The player startup time states how long the player needed until it was ready for playback.
When video playback is started, the video startup time measures how long it took until the first frame was displayed.
The startup time is the sum of player startup time and video startup time. Note that this is not necessarily the total duration from loading the player to the first video frame. There could be a substantial pause when the player is already loaded but video playback hasn't started – for example, when no-one has pressed the "Play" button yet. This pause is not reflected in the startup time.
Retrieving the median startup timeLink Icon
To understand how long your average viewer had to wait for a video, we can query for the median startup time. Make sure you've set up the Bitmovin JavaScript client according to the "Getting Started" guide.
If everything works, we can query for the median startup time:
1queryBuilder
2 .median('STARTUPTIME')
3 .between(fromDate, toDate)
4 .filter('STARTUPTIME', 'GT', 0)
5 .query()
6 .then(console.log);
The result will look something like this:
1{
2 rowCount: 1,
3 rows: [[1644.8242063492066]],
4 columnLabels: [{ key: 'STARTUPTIME', label: 'Startuptime' }],
5}
Our median startup time is stored in result.rows[0][0]. The time is given in milliseconds, so in this example, a typical video started up in 1.64 seconds.
Why did we add the .filter clause? Your analytics data contains entries for all sorts of video events. Only few of them will be about startup time, for all others the STARTUPTIME is set to 0. Unless we filter out this irrelevant data, the median startup time will always be 0.
Avoiding background loadsLink Icon
Some browsers like Chrome defer media loading when videos are loaded in background tabs. This influences the tracked startup time. Since startup times for videos loaded in the background are irrelevant for user experience, you typically want to ignore them by adding a PAGE_LOAD_TYPE filter to your query. The following query only considers videos loaded in the foreground:
1queryBuilder
2 .median('STARTUPTIME')
3 .between(fromDate, toDate)
4 .filter('STARTUPTIME', 'GT', 0)
5 .filter('PAGE_LOAD_TYPE', 'EQ', 1)
6 .query()
Average vs. medianLink Icon
Often we are interested in typical scenarios, like "How long did viewers have to wait for a video to start playing?". To answer this question we can either use the average or the median of a metric.
The median is more meaningful for metrics with strict boundaries, like durations. Since there cannot be negative durations, the lower boundary of the metric is 0. Thus the average will be unproportionally skewed by very high outliers – like the startup time of a hiker watching a video on the cell phone on a mountain top. For metrics where most data is near the boundary but there are extreme outliers, the median will give you results closer to the real-life experience of your viewers.
Also when you expect one of several discrete values (like the viewer's browser version), the median makes more sense.
In general the choice depends on your question, though. If you ask "What did the average user experience?", you should query for the median. If your question is "What did my users experience on average?", then the average is the way to go.
Average startup time for each dayLink Icon
When we look at a metric in a certain period, it's useful to divide the period into equal time intervals to see how our metric evolved over time. To determine the average player startup time for each day of our period, we can use the following query:
1queryBuilder
2 .avg('PLAYER_STARTUPTIME')
3 .between(fromDate, toDate)
4 .interval('DAY')
5 .filter('PLAYER_STARTUPTIME', 'GT', 0)
6 .filter('PAGE_LOAD_TYPE', 'EQ', 1)
7 .query()
8 .then(console.log);
The result looks like this:
1{
2 rowCount: 5,
3 rows: [
4 [ 1510531200000, 12301.99537037037 ],
5 [ 1509580800000, 910 ],
6 ],
7 columnLabels: [{ key: 'PLAYER_STARTUPTIME', label: 'Player startuptime' }],
8}
Now we've got an array of several rows, with 2 elements each. The first element is the unix timestamp of the beginning of the day.
1new Date(1510531200000) // => 2017-11-13T00:00:00.000Z
The second element is the average player startup time of the day. In our example, the average player startup time on November 13 was 12.3 seconds.
You might have noticed that there isn't a row for every day of our query period. That's because only days with actual analytics data are included in the result.
Of course you can also choose other intervals. Available values are 'MINUTE', 'HOUR', 'DAY' and 'MONTH'.
Video startup times for different countries, browsers and CDN providersLink Icon
With an international audience, it's important to analyze how your video platform performs across different countries, browsers and CDN providers.
To check how your video startup time performs in Google Chrome, you can query
1queryBuilder
2 .median('VIDEO_STARTUPTIME')
3 .between(fromDate, toDate)
4 .filter('VIDEO_STARTUPTIME', 'GT', 0)
5 .filter('PAGE_LOAD_TYPE', 'EQ', 1)
6 .filter('BROWSER', 'EQ', 'Chrome')
7 .query()
1queryBuilder
2 .median('VIDEO_STARTUPTIME')
3 .between(fromDate, toDate)
4 .filter('VIDEO_STARTUPTIME', 'GT', 0)
5 .filter('PAGE_LOAD_TYPE', 'EQ', 1)
6 .filter('CDN_PROVIDER', 'EQ', 'akamai')
7 .filter('COUNTRY', 'EQ', 'ES')
8 .query()
Comparing BrowsersLink Icon
Sometimes you don't know all the values to query for. Like for Browsers, there are some exotic ones that you might not think of – or would you have though of "Vivaldi"? To get an overview of startup times in all browsers, we can group our results:
1queryBuilder
2 .median('STARTUPTIME')
3 .between(fromDate, toDate)
4 .filter('PLAYER_STARTUPTIME', 'GT', 0)
5 .filter('PAGE_LOAD_TYPE', 'EQ', 1)
6 .groupBy('BROWSER')
7 .query()
8 .then(console.log);
This gives us the median startup time for each browser:
1{
2 rowCount: 15,
3 rows: [
4 ['Edge', 1654],
5 ['Other', 9809.5],
6 ['Mobile Safari', 1550],
7 ['Chrome Mobile', 2742.5],
8 ['Samsung Internet', 19398.5],
9 ['Opera', 2752],
10 ['Chrome', 1659.617857142857],
11 ['Safari', 492],
12 ['UC Browser', 1368],
13 ['Mobile Safari UI/WKWebView', 6622],
14 ['IE', 1740],
15 ['Vivaldi', 4169.5],
16 ['Firefox Mobile', 2036],
17 ['Firefox', 1403.6666666666665],
18 ['Chromium', 1822],
19 ],
20 columnLabels: [
21 { key: 'STARTUPTIME', label: 'Startup


text:
Images Paint for OneNote crop
Because in OneNote, there is no direct function, with the help of which you crop images, you need to to Paint draw:
- Open Paint.
- Insert your image by Drag & Drop or via "file" and "Open".
- At the top, click "Select" and you cut, holding down the right mouse button to your desired area.
- Click with the right mouse button on the selected area and select "cut".
- You delete the entire image ("Select All" and then [Del]) and then paste with "Paste" the cut-out neckline. Save the image and paste it in OneNote.
OneNote has notes of additional functions. You can, for example, a check-list in OneNote, create.

source: openbmb/Ultra-FineWeb


thus $\zeta+E(-i\omega)-\e ^2\phi(\zeta)$ has exactly one root in the square. The same argument shows that $p+i\omega+E(p,\epsilon)$ has no root in any other region in its analyticity domain except in the square constructed in the beginning of the proof. \smallskip \end{proof} In the case there is meromorphic continuation of the resolvent and of the corresponding $S$--matrix in the interval $\Delta$, for a Schr\"odinger operator of the type $-\Delta+V$, the localized Green's function is given by an expression of the form $$\int_{\Delta}g_{\Delta}(k)\frac{e^{i\bf k\cdot x}}{k^2-E}f(k)dkd\Omega$$ \z where $f$ is analytic in a neighborhood of $\Delta$. With the choice that $g_\Delta$ behaves like $e^{-1/(k-k_i)}$ near the endpoints $k_i$ of the interval, direct calculation shows that the correction to the exponential behavior of type $e^{-i\omega_* t}$ of $a(t)$ is given by a remainder of the form $$R_1(t)\sim e^{-2\sqrt{t}}\left( e^{i\theta_1 t}\sum_{k=0}^{\infty}\frac{c_{k;1}}{t^{k/4}}+e^{i\theta_2 t}\sum_{k=0}^{\infty}\frac{c_{k;2}}{t^{k/4}}\right)$$ \z where the power series are gotten by Watson's Lemma from Laplace integrals of the form $\int_0^a e^{-pt}F_{1,2}(p)dp$ (incomplete Borel summation). For newer results and references in Borel summability see e.g. \cite{Duke}, \cite{CPAM}. \begin{Theorem} \label{T2} Under the additional assumptions of this section, the meromorphic continuation of $$\chi (H-z)^{-1}\chi,$$ \z exists for $z$ near $\lambda_0$, and has a unique simple pole at $\omega_*$. \end{Theorem} The examples covered by the above approach include those discussed in \cite{SW} as well as the many cases where analytic continuation has been established, see e.g. \cite{H-Sig}. Furthermore, following results of \cite{H-Sig} it follows that under favorable assumptions on $V(x)$, $-\Delta+V(x)$ has no zero energy bound states in three or more dimensions extending the results of \cite{SW}, where it was proved for 5 or more dimensions. It is worth mentioning that the possible presence of thresholds inside $\Delta$ makes it necessary to allow for $\eta<\infty$, and that in the case where there are finitely many thresholds inside $\Delta$ of known structure, sharper results may be obtained. Other applications of our methods involve numerical reconstruction of resonances from time dependent solutions data, in cases Borel summability is ensured. This and other implications will be discussed elsewhere. \begin{thebibliography}{99} \bibitem{G-Sig} C. G\'erard and I. M. Sigal {\em Space-time picture of semiclassical resonances}, Commun. Math. Phys. \textbf{145}, pp. 281--328 (1992) \bibitem{H-S} B. Helffer and J. Sj\"ostrand {\em R\'esonances en limite semi-classique}, Mem. Soc. Math. France (N. S) \#24-25 (1986) \bibitem{Bal} E. Balslev {\em Resonances with a Background Potential} in Lecture Notes in Physics {\bf 325}, Springer (1989) \bibitem{Sar} R. Philips and P. Sarnak {\em Perturbation theory for the Laplacian on Automorphic Functions}, Jour. Amer. Math. Soc. Vol.5 No.1, pp 1--32 (1992). \bibitem{Sim} B. Simon {\em Resonances and complex scaling: a rigorous overview}, Int. J. Quantum Chem. {\bf 14}, pp. 529--542 (1978) \bibitem{Or} A. Orth {\em Quantum mechanical resonance and limiting absorption: the many body problem}, Com. Math. Phys. \bibitem{Hn} W. Hunziker {\em Resonances, Metastable States and Exponential Decay Laws in Perturbation Theory}, Com. Math. Phys. {\bf 132}, pp. 177--188 (1990) \bibitem{CLR} O. Costin, J. L. Lebowitz, A. Rokhlenko, {\em Exact results for the ionization of a model quantum system} J. Phys. A: Math. Gen. {\bf 33} pp. 1--9 (2000)). \bibitem{T-Z} S. H. Tang and M. Zworski {\em Resonance Expansions of Scattered waves} (to appear in CPAM) \bibitem{Sk} E. Skibsted {\em Truncated Gamov functions, $\alpha$-decay and exponential law}, Comm. Math. Phys. {\bf 104} pp. 591--604 (1986) \bibitem{SW} A. Soffer and M. I. Weinstein {\em Time dependent resonance theory} GAFA, Geom. Funct. Anal.vol 8 1086--1128 (1998). \bibitem{M-S} M. Merkli, I. M. Sigal {\em A Time Dependent Theory of Quantum Resonances} Comm. Math. Phys {\bf 201} pp. 549--576 (1999). \bibitem{JSS} J. L. Journ\'e, A. Soffer and C. Sogge {\em $L^p\to L^{p'}$ Estimates for time dependent Schr\'odinger Equations} Bull. AMS {\bf 23} 2 (1990) \bibitem{[26]} A. Jensen , E. Mourre \& P. Perry, {\em Multiple commutator estimates and resolvent smoothness in quantum scattering theory}, Ann. Inst. Poincar\'e--Phys. Th\'eor. {\bf 41} (1984) 207--225 \bibitem{[45]} I. M. Sigal \& A. Soffer, {\em Local decay and velocity bounds for quantum propagation}, (1988) preprint, ftp:// _URL_ \bibitem{Hun} W. Hunziker, I. M. Sigal, A. Soffer {\em Minimal Escape Velocities} Comm. PDE {\bf 24} (11\& 12) pp. 2279--2295 (2000). {\bf 126}, pp. 559-573 (1990) \bibitem{AHS} S. Agmon, I. Herbst and E. Skibsted {\em Perturbation of embedded eigenvalues in the generalized $N$-body problem} Comm. Math. Phys. {\bf 122} pp. 411--438, (1989) \bibitem{A-C} J. Aguilar and J. M. Combes {\em A class of analytic perturbations for one body Schr\"odinger Hamiltonians} Comm. Math. Phys. \textbf{22} pp. 269--279, (1971) \bibitem{Duke} O. Costin {\em On Borel summation and Stokes phenomena for rank one nonlinear systems of ODE's} Duke Math. J. Vol. 93, No.2 pp. 289--344 (1998). \bibitem{CPAM} O. Costin, S. Tanveer {\em Existence and uniqueness for a class of nonlinear higher-order partial differential equations in the complex plane} CPAM Vol. LIII, 1092---1117 (2000)). \bibitem{H-Sig} P. Hislop and I. M Sigal {\em Introduction to Spectral Theory}, Applied Math. Sci


, pub-7342730605707071, DIRECT, f08c47fec0942fa0
Paint | Characteristics of an ideal paint - Ishwaranand
Paint | Characteristics of an ideal paint
Characteristics of an ideal paint
Paint, Characteristics of ideal paint, An object of Paint, Constituents of Paint oil Paint, Types of Paints, Classification of Paints,
An object of paint
 1. It protects wood from decaying
 2. It prevents corrosion of metal
 3. It protects the surface from the harmful effects of atmospheric agencies
 4. It gives a decorative and attractive appearance that the surface
 5. It makes the surface safe & clean
Characteristics from an ideal paint
 1. It should be cheap & economical
 2. It should stick well to the surface and should be able to seal the porous substrate.
 3. Its consistency should provide easy workability.
 4. Each thickness of the paint layer should be adequate during good protection including decoration of the surface.
 5. The paint film should dry rapidly.
 6. These dried paint film should be ready to withstand the adverse weather effect for a lengthy time without spending shining.
 7. It should offer resistance to failure by checking, cracking also flaking separate within thin pieces.
 8. It should possess good moisture resistance.
 9. Its colour should not fade beyond time.
Constituents about Paint Oil Paint
Oil paint is commonly made up of 6 principal constituents
 1. A base
 2. An inert filler or extender
 3. Colouring pigment
 4. A vehicle
 5. A solvent or thinner
 6. A drier
 1. It is generally, metallic oxide and is used in the form of powder.
 2. It a pigment that forms the chief ingredient of paint.
 3. The most important purpose of adding a base in paint is to make an opaque(non-transparent) coating to hide the surface to be painted.
 4. It provides resistance to abrasion and prevents shrinkage cracks likely to be formed in the film, during drying.
 5. White lead, red lead, zinc oxide, iron oxide, and titanium whites are the bases commonly used.
Inert filler or extender
 1. It is a cheap pigment added in the paint to reduce its cost.
 2. It modifies the weight of the paint and makes it more durable.
 3. The commonly used inert fillers or extenders are Barytes (Barium sulfate), lithopone, silica, silicate of magnesia or alumina, whiting, gypsum, charcoal, etc.
 1. It is a white or coloured pigment, mixed in the paint to get the desired colour of the paint.
 1. It is a liquid that acts as a binder for the various pigments, bases, extender and colouring pigment.
 2. The vehicle makes the paint in the state of fluid and helps to spread its ingredients uniformly over the surface to the painted
 3. Here forms as elastic, resistant to abrasion including a reasonably impermeable film about drying
 4. Refined linseed oil is a commonly used vehicle in oil paints.
 5. Tung, perilla, soybean, fish, sunflower, tobacco seeds are also being used as vehicles in various combinations with linseed oil or without linseed oil
Solvent or thinner
 1. That is a liquid which thins the consistency of the paint including evaporates after some paint film has been applied
 2. It imparts good properties such as brushability, smoothness, and flow
 3. Turpentine's, pure oils, petroleum spirit, and highly solvent Naptha are commonly used as solvent or thinner
 1. It containing metallic compounds and are used in small quantities for accelerating the drying of the paint film.
 3. Litharge, lead acetate, manganese dioxide, including cobalt are the driers commonly practised.
 4. Not more than 10% (by volume) of the drier should be used in an oil point.
 5. If used in excess, they tend to destroy the elasticity of the paint which finally leads to its flaking.
Types of Paints
The various types of paints
 1. Aluminium paints
 2. Anti-corrosive paints
 3. Asbestos paints
 4. Bituminous paints
 5. Bronze paints
 6. Cellulose paints
 7. Casein paints
 8. Cement-based paints
 9. Enamel paints
 10. Oil paints
 11. Rubber base paints
Classification of paints
Based on binders
 1. Oil paints
 2. Paint based on non-oil resins
 3. Waterbased paint
 4. Miscellaneouspaint
Based unused
 1. Primer(undercoat & finishing coat)
 2. Acid& alkali resistant paints
 3. Fire-resistance paints
 4. Fungicidalpaints
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text:
Sentences for beef. College students, readers, and those taking online classes might especially benefit from this page. The lines of text below use beef in a sentence, and provide visitors a sentence for beef.
- Antonia stood at the sideboard carving beef for him, and in the window sat Thea with her Persian kitten. (8)
- Barter thought themselves far from the old beef and beer, port and pigskin types of the Georgian and early Victorian era. (8)
- Melville, as became a tall islander, carved beef, and ate of it, like a ruler of men. (10)
- Now Ale, which is to Beef what Eve was to Adam, threatens to take possession of the field. (10)
- Roast beef stood eminent behind the souffle and champagne. (10)
- They were beef and pudding on legs; in some quarters, beer amiably manifest, owing to the flourishes of a military band. (10)
Glad you visited this page with a sentence for beef. Perhaps also see a sentence for bagarag and ways to use becomes in a sentence. Now that you've seen how to use beef in a sentence hope you might explore the rest of this educational reference site Sentencefor.com to see many other example sentences which provide word usage information.


text:
Type of Spiritual Experience
A description of the experience
Idursulfase (brand name Elaprase) is a drug used to treat Hunter syndrome (also called MPS-II) It is a purified form of the lysosomal enzyme iduronate-2-sulfatase and is produced by recombinant DNA technology in a human cell line.
On Dec, 14, 2015: 147 people reported to have side effects when taking Elaprase. Among them, 1 people (0.68%) has Hallucination.
On Nov, 17, 2015: 147 people reported to have side effects when taking Elaprase. Among them, 33 people (22.45%) have Death.

source: m-a-p/FineFineWeb


text:
Dynamo Spanish offers a variety of general Spanish classes at all levels, but we also offer several specialized language learning courses.
One of our specialty Spanish classes is Medical Spanish for Doctors and Nurses.
Who is Medical Spanish for Doctors and Nurses For?
Medical Spanish for Doctors and Nurses is for you if you are a:
- Hospital interpreter
- Medical student
- Paramedic or emergency medical technician (EMT)
Regardless of whether you work in a Spanish-speaking country or have frequent contact with those from Spanish-speaking areas, Dynamo Spanish's Medical Spanish course will help you learn Spanish and gain the skills you need to communicate effectively with your patients.
Spanish Learning with Dynamo Spanish
All of Dynamo Spanish's courses emphasize conversational practice, and Medical Spanish is no exception. Speaking is one of the hardest skills to master when learning a language, which is why Dynamo Spanish asks its students to begin practicing from the beginning.
During your conversational practice sessions, you and your teacher will work through grammatical concepts and learn the vocabulary you need to communicate successfully with you patients in medical settings.
You will also have ample practice listening to and comprehending Spanish as spoken by native speakers (all of Dynamo Spanish's teachers are native speakers).
What You Will Learn in Medical Spanish for Doctors and Nurses
In our Spanish lessons for doctors, nurses, and other medical professionals in the healthcare field, we will include basic concepts like greetings and other basic conversational topics to help you build rapport with your Spanish-speaking patients.
However, because these courses are specialized offerings, we will also:
- Learn medical vocabulary and terminology, including correct pronunciation and accent
- Cover cultural norms and concepts as applicable to the Spanish-speaking areas in which you will be working
- Practice the Spanish language skills you need to:
- Communicate with other healthcare workers
- Take a patient's history
- Conduct and ask questions during routine physical
- Explain prescriptions
- …and more!
Dynamo Spanish's courses are one-on-one offerings, which means that the content will be tailored to meet your needs and help you reach your goals. If there is specific content that you want to learn as a healthcare professional, be sure to let your teacher know so that they can schedule in the content when you are ready for it.


text:
NTU researchers have found a way to extract pectin from durian husks and turn it into biodegradable packaging materials.
Researchers at the Nanyang Technological University (NTU) have found a way to turn durian husks into biodegradable packaging materials.
Pectin is a natural part of the human diet, and can be found in fruits and vegetables. Most fruits - like pears and apples - contain large amounts of pectin.
While pectin can be used to make jam hold its structure, or in some medical adhesives, Professor William Chen, director of NTU's food science and technology programme, has found a way to extract pectin from durian husks and turn it into biodegradable packaging materials.
To do so, the husks are cut, then ground and shredded to produce a cellulose powder.
This is then used to create sheets of the biodegradable material.
The material is shiny and slightly cloudy - and can be degraded within a month if it is put in the soil. If required, the material's colouring can be changed by introducing colour into the cellulose shreds.
Prof Chen and his team are in talks with several food and beverage companies to work on commercialising the material.


text:
A full-scale experiment was carried out on air flow and heat transfer of a fight plane-s cockpit. Aerothermal load and body heat load were simulated, and ATM2400 36-channel airflow and temperature instrument were used to measure velocity fields of 5 measurement planes and temperature fields of 2 measurement planes and near clothing surface. The influnce of air supply flux and the switch of nozzles was observed, and the cockpit comfort was assessed. The results show that velocity fields are asymmetry and temperature distribution on cockpit-s inside wall is unevenness, and the switch of nozzles has great effect on velocity fields, temperature fields and temperature distribution near clothing surface while has little effect on the average velocity and temperature in cockpit, and the average velocity is linear with air supply flux. Experimental results can be used for proving numerical simulation accuracy.
����,Ԭ��.��-��-����ϵͳ��������[M].����:�������պ����ѧ������,2000:1-7 Chen Xin, Yuan Xiugan. General human-machine-environment system[M]. Beijing: Press of Beijing University of Aeronautics and Astronautics, 2000:1-7(in Chinese)
������,�λ�ɺ.��������������[M].����:�������պ����ѧ������,2004:314-398 Shou Rongzhong, He Huishan. Aircraft's environment control[M]. Beijing: Press of Beijing University of Aeronautics and Astronautics, 2004:314-398(in Chinese)
Singh A, Hosni M H, Hortsman R H. Numerical simulation of airflow in an aircraft cabin section[J]. ASHRAE Transactions, 2002, 108(1): _PHONE_
Gunther G, Bosbach J, Pennecot J, et al. Experimental and numerical simulations of idealized aircraft cabin flows[J]. Aerospace Science and Technology, 2006(10):563-573
�ֹ���.�յ��������������ʹ��ȵ���ֵ�о� .����:�������պ����ѧ���տ�ѧ�빤��ѧԺ,1998 Lin Guohua. Numerical fluid flow and heat transfer within an air-conditioning cockpit . Beijing: School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics, 1998(in Chinese)


text:
Skip to Main Content
Topology optimization methods suffer from a lack of convexity for the design of electromagnetic devices. Local minimizers indeed prevent deterministic methods from attaining the optimal solution. The optimization result may then vary according to the initial conditions. This paper proposes a convexity-oriented method focusing on the maximization of the forces exerted on ferromagnetic parts in electromagnetic actuators. The method is based on a simultaneous optimization of two topologies by a gradient-based algorithm, the forces being computed by combining their magnetic fields within the Maxwell stress tensor. During the optimization, the two topologies converge towards a unique design using constraints whose shape is progressively modified. The method benefits from a fast convergence and produces consistent and efficient results, which is highlighted on a test problem. The method is eventually applied to a realistic problem related to the design of a switched reluctance actuator.


text:
How long will the prairie strips work? Won't dirt pile up quickly above the prairie strip?
As water moves downslope in a field and encounters the prairie strips, there will be greater resistance to flow and the surface runoff water will slow down. When this water slows, some of the material it is carrying will be deposited. This generally occurs a few feet into the leading edge of the strip or immediately upslope of the strip.
How quickly the soil builds up is in large part dependent on upslope practices. Incorporating good conservation systems within the row-crop area can reduce sediment loading to the strips and thereby reduce sediment deposition along the leading edge of the strip.
Over time, there may be some required maintenance to regrade deposited sediment to minimize any potential for short-circuiting of water flow.


text:
A graduate student at the University of Nottingham has just released a new film which you control with your mind.
Richard Ramchurn, a graduate student from the University of Nottingham, new film 'The Moment' is designed to Let you be the director by using your brainwaves.
The film is set in a dark future where – you guessed it – brain-computer interfaces are the norm. The avant-garde style piece clocks in at 27 minutes and is almost complete.
In preparation for its launch, Ramchurn has been screening a short trailer where up to eight people can view a person controlling a short section of the film.
The film works by having the viewer wear a NeuroSky MindWave – the device promised to track your level of attention by measuring electrical activity. The MindWave works on the assumption that activity within a certain frequency range is believed to correspond with attentiveness.
This information is then fed back to a computer which analyses the data to alter the flow of the background music and the editing of the film.
Ramchurn believes this allows the viewer to edit the film either consciously (by thinking about it) or naturally (as the viewer responds to what is happening on the screen). He believes the film allows the viewer to create a feedback loop with the film; with the film changing your emotional state and your emotional state changing the film.
The film follows three characters who interact throughout, and the technology allows the user to switch back and forth between two of its three main plot threads. Ramchurn linked the cuts in the film to the natural flow of the attention data which changes around every six seconds.
This means the user could switch shots every six seconds, over 27 minutes that means there are a possible 100 trillion different versions of film you could watch.
The film represents a novel application of existing brain-wave measuring technology. If similar techniques are adopted for other films how we consume media could radically alter in future.
The Moment will premiere during the Sheffield Film Festival in June.


;
 if (recordId == Guid.Empty)
 record = graph.CreatePeerRecord(CHAT_MESSAGE_RECORD_TYPE,
 new TimeSpan(0,0,10));
 record.DataAsString = textBox3.Text;
 textBox3.Text = string.Empty;
 record = graph.GetRecord(recordId);
 record.DataAsString = textBox3.Text;
 graph.UpdateRecord(record, new TimeSpan(0,0,3));
If no existing record has been selected, then the entered text is associated with a new record. CreatePeerRecord is called to create a record, the text is added as data, and the record is added to the graph. Otherwise, when an existing record has been selected, the record is retrieved, the data is updated with the entered text, and the graph is updated.
The application's OnRecordChanged event is fired when the status of a record in the graph changes. When a record is added, it adds the record's ID to the top list. When a record is deleted or when it expires, it removes the record's ID from the top list. In all cases, a diagnostic message is recorded.
private void OnRecordChanged(object sender,
 PeerGraphRecordChangedEventArgs e)
 PeerRecord record;
 switch (e.Action)
 case PeerRecordAction.Added:
 record = graph.GetRecord(e.RecordId);
 LogMessage(@"Added", record.DataAsString);
 case PeerRecordAction.Deleted:
 LogMessage(@"Deleted", e.RecordId.ToString());
 case PeerRecordAction.Expired:
 LogMessage(@"Expired", e.RecordId.ToString());
 case PeerRecordAction.Updated:
 record = graph.GetRecord(e.RecordId);
 LogMessage(@"Updated", record.DataAsString);
 textBox3.Text = record.DataAsString;
 recordId = e.RecordId;
Points of Interest
In order for the PeerRecord class to be cached by an application, it must make a copy of the unmanaged data. The reason for this is that after the PEER_RECORD has been marshaled, its memory is freed. To simplify freeing memory, Microsoft chose to create a continuous block of memory to store a record and its data. That is, the data follows the record in the same block of memory. As a result, once the memory is freed, the data is no longer accessible from managed code (the IntPtr is invalid). In an effort to maintain the data in marshalable form, the unmanaged data is copied into the unmanaged memory. It's too bad, Microsoft doesn't provide a better way to do this.
private void CopyUnmanagedData(PEER_DATA data)
 IntPtr ptr = Marshal.AllocHGlobal(data.cbData);
 byte[] buffer = new byte[data.cbData];
 Marshal.Copy(data.pbData, buffer, 0, data.cbData);
 Marshal.Copy(buffer, 0, ptr, data.cbData);
 data.pbData = ptr;
I will need to run some benchmarks to determine if there is a more optimal approach to handling this problem, especially if the majority of the time, it's only marshaled for reading.
Links to Resources
I have found the following resources to be very useful in understanding peer graphs:
I hope you have found this article useful. The next article will focus on associating XML meta-data with a record. Stay tuned for more articles on the following topics:
 1. Peer Name Resolution - Windows Vista Enhancements
 1. Peer Graph - Attributes
 2. Peer Graph - Searching
 3. Peer Graph - Importing and Exporting a Database
 1. Peer Groups and Identity
 1. Peer Collaboration - People Near Me
 2. Peer Collaboration - EndPoints
 3. Peer Collaboration - Capabilities
 4. Peer Collaboration - Presence
 5. Peer Collaboration - Invitations
If you have suggestions for other topics, please leave a comment.
Initial revision.
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About the Author
Web Developer
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Adrian is a Microsoft MVP for Windows Networking.
Comments and Discussions
QuestionBug Pinmemberfala7026-Apr-07 5:01
Questionnot sure what I doing wrong! Pinmemberalexis266-Jul-06 4:46
AnswerRe: not sure what I doing wrong! Pinmemberalexis2621-Jul-06 5:16
GeneralSample not working Pinmemberjimmyjos16-May-06 0:05
GeneralRe: Sample not working PinmemberAdrian_Moore16-May-06 2:47
GeneralImporting Database Pinmembergafferuk13-Jan-06 1:50
GeneralRe: Importing Database PinmemberAdrian_Moore13-Jan-06 2:38
GeneralReceiving records. Pinmembergafferuk12-Jan-06 16:17
GeneralRe: Receiving records. PinmemberAdrian_Moore13-Jan-06 2:36
GeneralSending byte array Pinmembergafferuk12-Jan-06 14:34
GeneralRe: Sending byte array PinmemberAdrian_Moore13-Jan-06 2:27
QuestionStop peers modifying records? Pinmembergafferuk12-Jan-06 13:39
AnswerRe: Stop peers modifying records? PinmemberAdrian_Moore12-Jan-06 14:19
GeneralNot working Pinmembergafferuk3-Jan-06 0:59
GeneralRe: Not working PinmemberAdrian_Moore3-Jan-06 2:47
GeneralSimple way to get total peer count in graph Pinmembergafferuk12-Jan-06 13:22
GeneralRe: Simple way to get total peer count in graph PinmemberAdrian_Moore12-Jan-06 14:11
GeneralRe: Simple way to get total peer count in graph Pinmembergafferuk12-Jan-06 15:04
GeneralRe: Simple way to get total peer count in graph PinmemberAdrian_Moore13-Jan-06 2:26
GeneralRe: Simple way to get total peer count in graph Pinmembergafferuk13-Jan-06 4:01
GeneralRe: Simple way to get total peer count in graph PinmemberAdrian_Moore14-Jan-06 3:29
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text:
The Basketball Academy is embedded in the Health and Physical Education curricula of the Australian Curriculum. The program provides quality experienced coaching in a dynamic and supportive environment.
Flinders University's functional screening program and testing is provided to increase player performance and durability through a strength and conditioning program.
In partnership with Flinders University and Basketball SA, Springbank Secondary College is developing a High Performance Basketball program which aims to include:
- Personal learning plan with a basketball and pathway focus
- Opportunity to apply for a scholarship sponsored by Basketball SA
- Strength and conditioning
- Coaching and accreditation
- The use of technology to assist skill acquisition
- Sports nutrition
- Injury prevention
- Performance development and analysis


NAME
YAML::PP::Schema::Merge - Enabling YAML merge keys for mappings
SYNOPSIS
 use YAML::PP;
 my $yp = YAML::PP->new( schema => [qw/ + Merge /] );
 my $yaml = <<'EOM';
 ---
 - &CENTER { x: 1, y: 2 }
 - &LEFT { x: 0, y: 2 }
 - &BIG { r: 10 }
 - &SMALL { r: 1 }
 # All the following maps are equal:
 - # Explicit keys
 x: 1
 y: 2
 r: 10
 label: center/big
 - # Merge one map
 << : *CENTER
 r: 10
 label: center/big
 - # Merge multiple maps
 << : [ *CENTER, *BIG ]
 label: center/big
 - # Override
 << : [ *BIG, *LEFT, *SMALL ]
 x: 1
 label: center/big
 EOM
 my $data = $yp->load_string($yaml);
 # $data->[4] == $data->[5] == $data->[6] == $data->[7]
DESCRIPTION
See _URL_ for the specification.
Quote:
"Specify one or more mappings to be merged with the current one.
The << merge key is used to indicate that all the keys of one or more specified maps should be inserted into the current map. If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the current mapping, unless the key already exists in it. If the value associated with the merge key is a sequence, then this sequence is expected to contain mapping nodes and each of these nodes is merged in turn according to its order in the sequence. Keys in mapping nodes earlier in the sequence override keys specified in later mapping nodes."
The implementation of this in a generic way is not trivial, because we also have to handle duplicate keys, and YAML::PP allows you to write your own handler for processing mappings.
So the inner API of that is not stable at this point.
Note that if you enable this schema, a plain scalar '<<' will be seen as special anywhere in your document, so if you want a literal '<<', you have to put it in quotes.
Note that the performed merge is not a "deep merge". Only top-level keys are merged.
METHODS
register
Called by YAML::PP::Schema


text:
Planning Construction of Four-River Basin Projectby Edwin W. Eden, Jr.,
Serial Information: Journal of the Irrigation and Drainage Division, 1966, Vol. 92, Issue 3, Pg. 1-16
Document Type: Journal Paper
The existing and potential water-oriented resources of four major river basins in Florida-the Hillsborough, Withlacoochee, Oklawaha, and Peace Rivers—and the facilities required for the most desirable development of the available potential is described. The role of construction in the implementation of the program of water management and conservation is developed.
Subject Headings: Construction management | Basins | Existing buildings | Water conservation | Rivers and streams
Services: Buy this book/Buy this article
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text: Dr. ZhiQiang Chen joined the Civil and Mechanical Engineering Department at University of Missouri-Kansas City in 2010. Chen received a Ph.D. in structural engineering from University of California, San Diego in 2009, where he completed his cross-disciplinary dissertation titled "Identifying Structural Damage from Images." Prior to joining UMKC, he conducted research in nonlinear soil-structure simulation, geotechnical centrifuge modeling, and system identification as a postdoctoral researcher at UCSD. At UMKC, Chen and his research group (_URL_) dedicate to discovering knowledge from complex interactions in constructed structures and developing advanced imaging and computing methodologies for assessing disaster-induced built environment losses. Chen also has interest in applying building information modeling (BIM) in sustainable energy research. Chen currently teaches / is planning to teach courses in structural engineering and computer engineering, including structural analysis, structural dynamics, advanced engineering mathematics, and advanced image understanding.


text: Exquisite workmanship and lavish use of precious materials distinguish this sword as a princely weapon and exemplifies the opulence and refinement of Ottoman luxury arts. Almost identical to a yatagan (now in the Topkapi Palace, Istanbul) made in 1526–27 by the court jeweler Ahmed Tekel, for the Ottoman sultan Süleyman the Magnificent (r. 1520–66), this sword was undoubtedly made in the same imperial workshop. The gold incrustation on the blade depicts a combat between a dragon and a phoenix against a background of foliate scrolls. These figures, like the gold-inlaid cloud bands and foliate scrolls on the ivory grips, are Chinese in inspiration, and were probably introduced into Ottoman art through contacts with Persia. This sword is one of the earliest known yatagans, distinctly Turkish weapons characterized by a double-curved blade and a hilt without a guard. Yatagans were commonplace in Turkey and the Balkans in the eighteenth and nineteenth centuries and served as sidearms for the elite troops known as janissaries.

source: HuggingFaceFW/fineweb-edu


text:
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A group of Native Americans recently gathered at Lock 60 in Mont Clare to offer prayers in a drumming circle for the safe journey of the Mother Earth Water Walkers 2013. The walkers began a journey along the Mississippi River March 1 and will be travelling 1,200 miles, ending April 30 at the Gulf of Mexico.
The 1st Annual Women's Water Walk took place April 2003. Several women from different clans came together to raise awareness that our clean and clear water is being polluted by chemicals, vehicle emissions, motor boats, sewage disposal, agricultural pollution, leaking landfill sites, and residential usage is taking a toll on our water quality. Water is precious and sacred...it is one of the basic elements needed for all life to exist.
The Annual Women's Water Walk was chosen for Spring because for the natural re-growth of our natural habitat, as it is a in time for renewal, re-growth, and re-birth.


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coal mining cost analysis and detailed cash flow Cambodia
Sand maker
Sand washer
Coal mill
Sand dryer
Coal slime dryer
Coal ash dryer
Silica sand dryer
River sand dryer
Coal briquetting machine
How And Why To Value A Coal Mine Fti Consulting
Coal mining cost analysis and detailed cash flow exodus coal prices depend on the calorific value of the coal, as well as the level of impurities present. everything being equal, the higher the CV and the lower the impurities, the higher the expected price per ton. key characteristic of commodity companies is their dependence on the price of the commodity for their cash flow and value.
Mining Economics
Mining automation market demand and growth analysis mining economics & strategy textbook. learning outcomes describe best practice systematic mine planning. explain the importance of engineering decisions based on costs. create cash flow models. perform break even analysis. describe costs from an economic perspective. perform incremental & marginal cost analysis.
Economic Assessment Bhp
Mining industry introduction to mining financial concepts In contrast, cost-benefit analysis estimates cost and benefits of a project using discounted cash flow analysis. unlike the input-output method, the outputs from a cost-benefit analysis would be the net present value internal rate of return and benefit-cost ratio
The Uneconomics Of Coal Fracking And Developing Anwr
Discounted cash flow dcf valuation model template 2019 study of dedicated u.s. shale oil companies found that only four of them had a positive cash flow balance. much of the easiest drilling has already been done. investors havent been
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Mining financial model amp valuation the cost for start-up inventory $250,000; the cost for store equipment $13,750; the cost of purchase and installation of cctvs $5,000
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New coal mine development and effective use plan figure includes the cash cost of all operating coal units in the us. figure cash costs of US coal units. source: carbon tracker notes: see no country for coal gen for more information. operating costs. when analysing the running cost of coal power an important distinction needs to be made between the cash and operating cost.
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User s manual for the cmop cash flow model version detailed discounted cash flow has not been undertaken for the cost benefit analysis of the urannah project. instead it relies on previous present value of costs and benefits from previous work. environmental costs have been estimated using the benefit transfer method and is subject to the inaccuracies of this method.
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How and why to value a coal mine fti journal gold mining company discounted cash flow dcf valuation model template price: $99.00. add to wish list. waste removal has been one of the long-standing factors that cost mining companies a lot. so, before the start of the project, a detailed characterization of the existing waste material upon exploration is critical for the companies to
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Investment opportunities in coal mining seeking alpha any mining projectasset with a study is a perfect dcf candidate early stage is much harder to value mining assets are essentially one big npv analysis provide a very detailed plan last years are negative cash flow mining valuation npv
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Aventurine engineering mining technology mining news 2.2 drilling and excavation cost 2.3 surface vs. underground mining costs 2.3.1 mining method costs 2.4 budgeting and cost control 2.5 capital budgeting: methods of appraisal 2.5.1 traditional methods payback period method accounting rate of return method 2.5.2 discounted cash flow methods
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Establishing the feasibility of your proposed mining key cash flow drivers should be modeled explicitly. microsoft excel is considered the industry standard piece of software in data analysis. monthly inventory inventory days cost of sales investing cash flows forecast. cash outflows include money invested in property, plant,
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Investment opportunities in coal mining seeking alpha certificate of sampling and analysis for coal mining in indonesia. mining crushers mainly include jaw crusher, coal mining cost analysis and detailed cash flow read more. fundamental analysis of mining industry in south africa. mining and minerals in south africa. south africa is a world leader in mining.
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Coal mining cost forecasts macromonitor pcf, or p-cash flow is also common but only used for producing mines, as it uses the current cash flow in that year, relative to the price in the security. the ratio takes the adjusted cash flow cash flow cash flow is the increase or decrease in the amount of money a business, institution, or individual has.
Powering Down Coal Navigating The Economic And Financial
More coal mine closures bankruptcies to come as demand where profitability is defined as revenues minus long-run operating costs, our analysis finds that due to high fuel costs 42% of coal capacity operating today could be losing money. from 2019 onwards, we expect a combination of renewable energy costs, air pollution regulation and carbon pricing to result in further cost pressures and make 72%
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Coalmod a financial analysis and policy simulation model mining cost service is the industry standard reference for mining cost estimation. this system places cost estimating data at your fingertips with conveniently indexed information to make your cost estimates faster, easier, and more credible. monthly updates assure that you are working with the most current cost data available.
How And Why To Value A Coal Mine Fti Journal
Analysis Of Productivity Trends At A Surface Coal Mine
Coal mining cost mode volume users guide for the surface coal mining productivity in the u.s. and illinois has shown a general declining trend since 1969. the u.s. department of energy conducted an analysis in 1980 of the causes of declining productivity in different states. this paper presents a detailed analysis of
Is Yanzhou Coal Mining Hkg Using Too Much Debt
Coalmod a financial analysis and policy simulation model jan 11, 2021 see our latest analysis for yanzhou coal mining what Is yanzhou coal minings debt? you can click the graphic below for the historical numbers, but it shows that as of september 2020 yanzhou coal mining had CN 79. of debt, an increase on CN 58., over one year. On the flip side, it has CN 27. in cash leading to net debt of about CN
Why Does Coal Survive A Detailed Real World Cashflow Analysis
Coal global resource engineering mining consultants mar 27, 2019 cumulative cash flow analysis is presented for a coal power plant. wind and solar expansion can improve coal profitability due to the value increase of load-following plants in a system with a high market share of variable renewables. CO price increases pose a major risk to coal power plants.
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Coal mining in canada industry data trends stats coal mining in canada industry trends coal mining in canada industry outlook poll average industry growth 025 x.x lock purchase this report or a membership to unlock the average company profit margin for this industry.
Coal Global Resource Engineering Mining Consultants
Why does coal survive a detailed real world cashflow analysis completed a detailed mine plan and economic model based on the developed geologic model. the analysis included creating an overall strip ratio contour map, equipment feet selection, orewaste sequencing including in-pit backfill, capital expenditure estimation by year, and cash flow analysis.
Coalmod A Financial Analysis And Policy Simulation Model
Is yanzhou coal mining hkg using too much debt jan 01, 1987 coalmod financial analysis and policy simulation model for coal mining developments frank basham and philippe monier mineral economics division ministry of energy, mines and petroleum resources victoria, british columbia cim bulletin, march 1981 abstract this paper outlines the scope and applications of
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New coal mine development and effective use plan articleost, title coal mining cost mode. volume users guide for the underground coal mining cost model. final report, author toth, and annett, r., abstractnote the revised epri coal mining cost models represent a computerized process engineering approach to the analysis of production costs and mining requirements of either surface or underground mining
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Analysis of productivity trends at a surface coal mine feb 19, 2021 metal mining. mineral mining. coal mining. others. regional analysis for mining automation. the report provides a detailed breakdown of the market region-wise and categorizes it at various levels. regional segment analysis displaying regional production volume, consumption volume, revenue, and growth rate from 026 covers:
More Coal Mine Closures Bankruptcies To Come As Demand
How and why to value a coal mine fti journal coal plants have been economically challenged for the past few years, generating minimal to negative cash flows. and


text:
Brora: the industrial capital of Sutherland
A small pocket of Jurassic rocks containing coal on the east coast of Sutherland at Brora gave rise to its place in history as the industrial capital of the Highlands. Coal was mined here for 400 years. The first reference to coal in Brora occurs in a Sutherland Charter of 1529. The last pit closed in 1974. Coal powered a range of local industries including brickworks, textile making, distilleries and of course salt panning. No trace of the coal industry upon which the one-time prosperity of Brora so largely depended, now remains.
"The ancient glory of Brora...laid bare"
These words from the Inverness Advertiser in 1869 were reporting an
event in which "the sand banks along the shore have been considerably
encroached upon, and at Port Cheaniraidh (winter port), a mile to the
west of the river, the action of the sea against the banks has laid
bare a row of buildings which must have been for ages lain imbedded
in the sea… Numbers of people flock to visit this long hidden relic
of the ancient glory of Brora". Read more about recent uncovering
of long hidden buildings and new discoveries about Brora's former salt
pan sites in our Archaeology pages.
Local participation and events are the foundation and the strength of the Brora Saltpans Project. Find out more - and find yourself! on our Gallery pages.


0
$\begingroup$
Let N be an n bit number. A brute force algorithm factors N by trying to divide N by all of the numbers between 2 and sqrt(N). Given that dividng two n bit integers takes O(n^2) time, what is the asymptotic running time for the brute force factoring algorithm?
$\endgroup$
2 Answers 2
1
$\begingroup$
It is $(\lfloor \sqrt{N} \rfloor-1) \cdot O(n^2) = O(\sqrt{N} \log^2 N) = O(2^{\frac{n}{2}} n^2)$ in the worst case: for each of the $O(\sqrt{N})$ choices of the dividend you perform a division of two numbers of at most $n$ bits.
(When you factor $N$ you might repeat some of the divisions, but these can be safely ignored since there can be at most $n$ repeated divisions, for a total complexity of $O(n^3) = o(2^{\frac{n}{2}} n^2)$.)
Notice that this is the best bound we can get for your question under reasonable hypotheses. Indeed, if the complexity of dividing two n-bit numbers is also $\Omega(n^2)$ and you apply the brute-force algorithm on a prime $N$:
$$ \sum_{i=2}^{\lfloor \sqrt{N} \rfloor} T(\log N, \log i) \ge \sum_{i=\lceil \sqrt{N}/2 \rceil}^{\lfloor \sqrt{N} \rfloor} T\left(\frac{1}{2}\log N - 1, \frac{1}{2}\log N - 1\right) = \Omega(\sqrt N) \cdot \Omega(\log^2 N) = \Omega(\sqrt{N} \log^2 N), $$
where $T(i,j)$ is the time it takes to divide a $i$-bit integer by a $j$-bit integer and I am assuming that $T(i,j)$ is non-decreasing w.r.t. $i$ and $j$.
$\endgroup$
0
$\begingroup$
Dividing a 128 bit number by a 64 bit number can be done in constant time. If N is a prime that doesn't fit into 128 bit then the algorithm won't finish in your life time :-) Dividing two n bit integers can be done in O (n log n) for large n.
But assuming that you use brute force division that does use $O (n^2)$ operations for a division, then you should just ask yourself how many divisions you will perform in the worst case (N is prime or the product of two primes close to $N^{1/2}$), and multiply by the number of operations per division.
You also need to be a bit more careful with the description of your algorithm: 121 is not divisible by any integer between 2 and the square root of 121. Similar, 86 is not divisible by any integer between 2 and the square root of 86.
$\endgroup$
1
 - $\begingroup$ I'm pretty sure 121 is divisible by $11 \le \lfloor \sqrt{121} \rfloor=11$ and 86 is divisible by $2 \le \lfloor \sqrt{86} \rfloor = 9$. $\endgroup$
 – Steven
 Sep 22, 2019 at 21:12
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text:
The Trevi fountain is at the ending part of the Aqua
Virgo, an aqueduct constructed in 19 BC. It brings water all the
way from the Salone Springs (approx 20km from Rome) and supplies
the fountains in the historic center of Rome with water
Construction of the Fountain In 1732, Pope Clement XII commissioned
Nicola Salvi to create a large fountain at the Trevi Square. A
previous undertaking to build the fountain after a design by
Bernini was halted a century earlier after the death of Pope Urban
VIII. Salvi based his theatrical masterpiece on this design.
Construction of the monumental baroque fountain was finally
completed in 1762.
The central figure of the fountain, in front of a large niche, is
Neptune, god of the sea. He is riding a chariot in the shape of a
shell, pulled by two sea horses. Each sea horse is guided by a
Triton. One of the horses is calm and obedient, the other one
restive. They symbolize the fluctuating moods of the sea.
On the left hand side of Neptune is a statue representing
Abundance, the statue on the right represents Salubrity. Above the
sculptures are bas-reliefs, one of them shows Agrippa, the girl
after whom the aqueduct was named.


text:
Design and development of pic microcontroller based 3 phase voltage and current signals based on is measured in software and corrected for measurement. Microcontroller based system which gives accurate dc voltage of series connected load and frequency of the voltage measurement the output of frequency measurement is. Microcontroller based v-i curve tracer the measurement of voltage and current "a new application of duty cycle sweep based on microcontroller to ob.
Shunt feedback method of power consumption measurement for microcontroller based applications voltage fall is compatible. Here we describe a simple temperature measurement and display system based on lm35 of pic16f877a-based the supply voltage to the microcontroller,. Microcontroller-based temperature monitoring and control is an essential and practical guide for all engineers involved in the use of microcontrollers in measurement and control systems. This article describes about ac power measurement using pic microcontroller to measure ac power it is essential to measure voltage, current, power factor.
Gps based projects embedded the result of digital voltmeter using pic microcontroller and lcd and its working in dc voltage measurement with pic microcontroller. Voltage measurement with a pic microcontroller ryan popa 03/30/2012 design team 3 abstract the purpose of this application note is to explain how to measure a voltage using a pic18f4520. Three phase voltage measurement using pic microcontroller code and simulation in proteus.
Best microcontroller based mini projects ideas microcontroller based digital over voltage protection real time water quality measurement system based. Microcontroller based this measurement is simply half of we can see the resonant frequency of the lc input voltage at this point, the microcontroller is. Indian journal of pure & applied physics vol 42, march 2004, pp 182-188 design and development of microcontroller based conductivity measurement system. Solar energy measurement is the microcontroller the ripples are removed using a capacitive filter and it is then regulated to +5v using a voltage.
This free engineering essay on essay: dc voltage measurement using the pic microcontroller and pwm is perfect for engineering students to. 3 phase voltage measurement using atmel before giving the voltage to the ic and atmega8 microcontroller, check the output voltage arduino based digital. The present paper describes the development of a low cost, microcontroller-based variable voltage variable frequency sinusoidal power source, which is the demand of the day for various applications.
The potential or voltage of thermocouples varies almost linearly with temperature however, almost isn't usually good enough – in most microcontroller-based temperature measurement applications the deviations from linearity must be modeled to measure temperature accurately. Voltmeter and ammeter can be easily made using pic microcontroller having data and it has software selectable high and low voltage reference input to. • input offset voltage (v os) based on the desired accuracy, input frequency, measurement rate and the microcontroller clock frequency. Phase angle between voltage and current using a on microcontroller based phase angle measurement and correcting phase angle using voltage controlled capacitor.
Table of contents ac voltage measurement using atmel avr micro-controllerscomponents neededstep1: step down the ac voltagewhat about voltage ratingstep 2: convert the ac voltage into dcwhy are we converting the voltagestep 3: give it to microcontroller/ atmega8 ac voltage measurement using atmel avr micro. Pic based car battery voltage monitoring system the pcb also has the option to use it as voltage measurement tool or pin of microcontroller through a voltage.
International journal of scientific & technology research volume 4, uses of the pic microcontroller, voltage international journal of scientific & technology. The design is based on microcontroller 16f877a/18f452that voltage measurement: remote microcontroller based monitoring of substation and control system. Low cost microcontroller based decay measurement microcontroller vcc supply voltage, which shifts the reference of adc as aref or vcc voltage reference with.


DriveWorks Pro 15: Rib [send feedback...]
Introduction
This document describes the types of rules that can be applied to models that have advanced feature parameters captured.
Driving advanced feature dimensions increases model generation time. Where possible capture feature dimensions (distances, numbers and angles) as dimensions rather than an advanced feature parameter.
During model generation captured dimensions are driven before captured advanced feature parameters. If the advanced feature parameter has also been captured as a dimension the value being driven into the advanced feature parameter will override the captured dimension.
Rib
ParameterTypeDescription
ThicknessDistanceSet the overall thickness of the rib
EnableDraftTrue/FalseEnable a draft angle on the rib
DraftAngleAngleSet the draft angle of the rib
DraftOutwardTrue/FalseSet the rib to draft outwards
DraftFromWallTrue/FalseSets whether the rib's draft is from wall or from sketch plane
ExtrusionDirectionTrue/FalseSet whether the rib extrudes normal or parallel to the sketch
IsTwoSidedTrue/FalseSet the sketch line to be the midpoint of the rib
ReverseThicknessDirTrue/FalseSet the direction of the rib thickness from the sketch line
FlipSideTrue/FalseSet the direction of the extrusion from the sketch line
TypeTrue/FalseSet the continuity type of a "Normal to sketch" extrusion to linear or natural
Table of Contents


text:
Christmas is a time of happiness and joy. However, some people may find it difficult to celebrate the holiday if their Christmas lights are going to keep flickering because of water damage. There are a few simple ways to keep your Christmas lights dry and avoid any potential damage. First, always make sure your Christmas lights are properly plugged into an outlet. Second, do not leave your Christmas lights up all night. Third, be careful when cleaning around your Christmas lights.
Benefits Of Keeping Christmas Light Plugs Dry
Keeping your Christmas light plugs dry can save you money in the long run. Not only will you avoid costly damage to your home, but you'll also be reducing the amount of energy that your lights are using. Here are some of the benefits of keeping your Christmas lights plugged into a dryer:
-You'll save money on repairs: If your Christmas lights are damaged by water, it's likely that you'll have to replace them. By keeping them plugged into a dryer, however, you can avoid this expense.
-Your holiday decor will last longer: Wet bulbs and cords can cause damage to CHRISTMAS TREE DECORATION, and they're not as festive as they could be.
Arrange Your Plugs So They Are In A Straight Line
Keeping your Christmas light plugs dry is important to prevent fires. Make sure the plug ends of your cords are in a straight line and not tangled. If you have multiple cords, try to group them together so they're not touching each other or the wall. When plugging in your lights, be sure to hold the cord close to the receptacle so water doesn't get inside and cause a fire.
Put Cardboard Or Paper Between The Two Prongs Of The Socket.
Dry Christmas light plugs can save you a lot of hassle this holiday season. By placing a piece of cardboard or paper between the plug and the light fixture, you can prevent water from getting into the electrical wiring and causing damage. If your Christmas lights start flickering or going out, using a dry plug may be all you need to solve the problem.
Keep Your Christmas Lights Away From Moisture
Keeping your Christmas lights away from moisture is important to keep them working properly. Moisture can cause electrical problems with your lights, and it can also cause them to break. If you live in a humid area, it's especially important to keep your lights dry. When storing your lights, make sure they're kept in a cool, dry place.
Place Water That Is Above Your Cord Level In A Container Or Bucket.
Keeping your Christmas lights plugged in during the dry winter months is important to avoid potential damage to your cords and light fixtures. Make sure to place any water that is above your cord level in a container or bucket, so it doesn't accumulate on the cord. If possible, try to keep the area around your cords clean and free of debris, so they'll stay healthy and not fray.
Use A Holiday-Themed Plug Cover To Keep Things Tidy
One of the best ways to keep Christmas lights plugged in and tidy is to use a holiday-themed plug cover. This way, all of the different light plugs will be easily identifiable, and no accidental disconnections will occur. When it comes to keeping Christmas lights plugged in, using a plug cover is one step that can make a big difference!
Tree Debris Away From The Christmas Light Plugs
Christmas is a season of joy and happiness. Spending time with family and loved ones is the best part of the holiday season. However, one thing that can ruin the fun is if your Christmas light cords get wet. The cords can become frayed, which can then lead to electrical shorts and even fire. To keep your Christmas light cords safe and dry, make sure to keep debris away from them. This means keeping tree branches and leaves away from the plugs, as well as any other objects that could fall on or near them.
Label Each Cord With A Piece Of Tape Or An Adhesive Label
Christmas is a time for family, friends, and celebration. Keeping the Christmas lights plugged in and dry is important to ensuring a festive mood. However, if left unplugged, even small pieces of dust can accumulate on the cords over time. This can create a fire hazard if the cord is pulled out while the light is still plugged in. To avoid this potential disaster, label each cord with an adhesive or tape label. This will keep the cords tidy and safe during the holiday season.
Don't Over-Dress Your Cords
Keeping Christmas light plugs dry can help prevent a power outage. Over-dressing cords can cause them to fray and break, weakening the electrical connection between the plug and the outlet. Instead of wearing bulky clothes that hide your cords, try using cord wrap or a holiday-themed cord holder.
Don't Overload Extension Cords
Whenever possible, try to avoid using extension cords. This is especially important during the holiday season when Wetlands and other water bodies are at their highest levels. extension cords can easily overload and cause a fire. Additionally, if plugs are left plugged in for long periods of time, they can overheat and start a fire.
Check Your Light Strings Every Few Days
Christmas is a time for family and friends to get together and celebrate. One way to make sure your Christmas light display looks its best is to check your strings every few days. If water or snow gets on the plug, it can cause the light to go out. By checking your strings regularly, you can avoid any issues and keep your display looking bright and beautiful!
It is important to keep Christmas light plugs dry to avoid potential electrical fires. This is especially important if your home has a lot of lights plugged in. Never use wet hands to plug in lights or extension cords, and be sure to have an emergency plan in place for any power outages. Finally, always wear safety gloves when working with electricity.


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The new spiral groove mechanical seal is a kind of non-contact seals and which can achieve "zero leakage". In recent years, we take it to a wide range of applications in aviation, petrochemical and other fields. This paper uses professional fluid analysis software CFD to build detailed models to analyze performance of spiral groove mechanical seals. It has discussed the influence on the spiral groove mechanical seals performance by different seal structure parameters and working parameters in stable state and the results are compared with experimental data. The results show that no matter pressure difference exists or not, spiral groove can produce pumping effect. There is a great pressure gradient along the radial direction and obviously different pressure distribution between the groove area and the non-groove area. The spiral groove pumping effect not only increases as the shaft speed increases, but also increases as the medium viscosity increases. Compared to the outlet pressure, the effect of inlet on performance of seals is obvious. Carrying capacity of film liquid is inversely proportional to the change of film thickness. The influence of geometric parameters on sealing performance is significant, and sealing performance improvement relies on the optimization design of the geometric structure.


A voice signal sample is stored as one byte. Frequency range is 16 Hz to 20 Hz. What is the memory size required to store 4 minutes voice signal?
This question is related to Cisco Interview
Showing Answers 1 - 12 of 12 Answers
 - Jul 16th, 2005
its 9600 bytes. as the voice frequency irange is in between 16-20,so sampling frequency must be grater than 40hz,so number of samples in 4min=40*240=9600 samples hemce we need a memory of 9600 bytes to store the voice signal
 - Aug 22nd, 2005
Its just 1440 bytes. Bandpass sampling frequency is just 6Hz. so just 6*240 bytes.
 Was this answer useful? Yes
 - Feb 28th, 2006
would u plz explain how it is 1440 bytes??????????????
 Was this answer useful? Yes
prem kiran
 - Aug 1st, 2006
since the signal is in the band 16-20 HZ. bandwidth is 4HZ and so 8HZ sampling rate enough..i.e 8 s/sec. 4min=240sec.
4min duration has 8*240 samples
and each sample has 8 bits,so min required memory is 8*8*240=1920 bytes
 Was this answer useful? Yes
Sundeep Borra
 - Aug 8th, 2006
It's 1920Bytes. As the bandwidth (f2-f1) is 20-16=4Hz. The sampling frequency should be twice the bandwidth (2B). the sampling frequency is 8Hz= 8 samples= 8 cycles/second.
4 minutes=(4*60) =240 Seconds
1sample->1 Byte
1Second->8 Samples
240 Seconds->(240*8) = 1920 Samples
 Was this answer useful? Yes
 - Dec 30th, 2006
band width : 4Hzsampling freq : 2*4(=8)Hz or above4 minutes = 4*60secs = 240 secsnumber of byte required minimum = 240*8=1920 bytes
 Was this answer useful? Yes
 - May 16th, 2007
Two things i wish to point here.
1) They have said that they are representing each sample by 8 bits. which implies that the sampling frequency is quite high. and that for one cycle of the minimum freq we get 256 samples.
2) Regarding the criterion that the sampling frequency should be twice of the bandwidth. this is applicable only when we are dealing with base band signal. whereas here it is pass band (since 16 to 20 is significant in our case).
So the sampling frequency should be quite high considering the two facts.
 Was this answer useful? Yes
 - Jul 12th, 2007
Nyquist–Shannon sampling theorem states that perfect reconstruction of a signal is possible when the sampling frequency is greater than twice the maximum frequency of the signal being sampled...so imagine sampling a 16Hz signal with 8hz...there's gonna be a sample every 2 cycles!..it has to be 40
 Was this answer useful? Yes
 - Aug 17th, 2008
Voice sample = 8 bit
Smaple frequency = 1/20 s = 0.05s
for 4 minutes = 4*60(minto sec)/0.05 = 4800 sample
s0 total memory = 8 * 4800 = 38400 bits = 4800 Bytes = 4.69 KB
 Was this answer useful? Yes
 - Aug 28th, 2008
banwidth of signal=4Hz
according to niquist theorem sampling frequency>=2*bandwidth
so sampling freq=2*4Hz(8 samples /sec)
1 samples is stored as 1 byte
so 8*8 bits/sec
so for 4 mins bits are = (4*60)*(64)=15KB
so asn is 15 KB.
 Was this answer useful? Yes
 - Nov 21st, 2009
Voice signal is sampled at 8000 samples per second. (Human voice is in the range of 300Hz-3400Hz, and according to nyquist sampling rate we take it more than double the rate).
For a 4 min. voice signal, we have
Memory = 4*60*8000 Bytes = 1875KB = 1.83 MB.
 Was this answer useful? Yes
 - Sep 30th, 2012
bt practically i required 1.07 mb to record 1.31 min speech,
any1 kno its calculation?
 Was this answer useful? Yes
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Farmers and the wider agricultural community across the UK are reporting issues with Gas Oil (Red Diesel). These issues are leading to operational problems with, and blocked fuel filters in, tractors and other plant equipment.
UKIFDA, the fuel distributions trade organisation, have confirmed that the operational problems are nationwide and not restricted to any one fuel supplier or distributor.
Keith Read, former farmer and now part of the CPS Fuels Agricultural Team, explains why we are seeing issues with Gas Oil:
"The Road Transport Fuel Obligation (RTFO) was first introduced in 2008. It required all fuel refiners to add levels of FAME to most UK fuels. The reason for adding FAME to fuel is to reduce the levels of fossil fuels, by replacing part of the mineral fuel with a sustainable element.
Since 2008 the levels of FAME in Gas Oil has varied, but until recently was at very low levels and caused few problems when used in farming or plant equipment. The level of FAME has now risen significantly. From January 2019 the target was 8.5% and is set to increase up to 12.4% by 2032.
The challenge with biofuels such as FAME is that they have a chemical property which means they absorb surprisingly high levels of moisture from the atmosphere. This moisture forms tiny droplets in the fuel, then drops down to settle the bottom of the tank, where it collects as free water.
Where this water and the fuel meets, organic bacteria that are always present in mineral fuel in microscopic form, clump together and form a thick sludge, usually black, but can show as a white waxy substance. It is this family of 'diesel bugs' that are causing the problems we are now seeing."
As part of CPS Fuel's commitment to promoting best practice in the farming industry in East Anglia, we are reiterating and expanding on guidance previously shared with our farming customers.
Six measures to minimise the impact of FAME in Gas Oil.
1) Check your fuel storage tank
If you still have a single skinned tank it's probably time to upgrade to a bunded one. Aside from having a 'second skin' to prevent oil leaks, bunded tanks help reduce the levels of condensation in the fuel which is a major problem as the fuel gets cold overnight and then sunshine warms the single skin of the tank. The temperature difference promotes condensation, especially in the spring and autumn seasons when the highest temperature changes occur.
2) Location matters
Keeping the tank in a location that is as dry as possible will help reduce the water build-up and in turn the contamination issues. Therefore, we recommend where possible storing your tank out of the rain. However, storing inside farm buildings that contain livestock over the winter should also be avoided as the humidity of these sheds can lead to significant problems.
3) Top up before you run low
The most common time for the problem with contamination to be reported is immediately after a fuel delivery. This often leads to the conclusion that the fuel delivery has been the source of the problem – but what happens is that if the fuel level was very low before the delivery, the action of pumping fuel in at high pressure causes the contamination at the bottom of the tank (often below the outlet level) to mix around the fuel and then out of the fuel lines into the engine or boiler.
One option is to make sure any water and contamination in the bottom of the tank is regularly drained, another is to not allow the fuel levels to drop much below halfway to reduce the risk of stirring up any contamination. It should be noted that this second option will only delay, not resolve the problem!
4) Remove water from your storage tank
If your tank has a water drain then run off any free water that has accumulated in your tank. If no water drain is fitted then there are various water soaking devices you can use to absorb water from your fuel storage tank. which includes the Tank Sponge Eco, a device which is dropped into the tank to soak up any water that might form at the bottom. Once full, the insert within the device can be replaced with a new unit, each one able to absorb up to 700ml.
5) Consider storage additives to protect your machinery
There is no additive which can remove water from the fuel, however, there are additives that can reduce the buildup of microbial contamination. Care must be taken however, as using these additives in a badly contaminated tank will tend to flood the fuel lines and filters with dead bacterial sludge.
Assuming that the tank and fuel is clean, the use of fuel additives (which are supplied by most major fuel distributors) will help slow the buildup and reduce the risk of waxing and of course, still provide the usual performance and efficiency improvements.
6) Fit proper filtration on your fuel bunker
CPS Fuels are Farmers too. At Foxburrow we store our Tractor Diesel in a 10000 litre FuelProof tank, which was installed in 2016. All machinery is bunkered through a 4 micron Cim-Tek filter fitted to that tank and the machinery uses Largo filters on all the equipment. Our Farm runs modern machinery: Agco tractors, Claas Combines and JCB handling equipment. The farm has had no problems, filter blockages or fuel issues running on Gas Oil supplied direct from CPS Fuels.
To conclude we believe users must tackle these issues now as FAME isn't going away and will only increase over time with the next increase to 9.75% set for 2020.
CPS Fuels have a very experienced tank engineering team who would be pleased to provide help, advice and assistance to all our agricultural customers so they can bring their installations up to scratch and so ensure that the fuel they store is kept and dispensed in the best possible condition.
To order Gas Oil and farm fuels in Bulk or Barrels click or call CPS Fuels now.
We're local, we're best, we're CPS.
CPS Fuels, as a JET authorised distributor, supply marked EN590 grade diesel as Gas Oil so you have the highest quality Gas Oil available irrespective of use. CPS Fuels Gas Oil meets the same BS EN590 specifications as white road diesel and is therefore suitable for use in all farm machinery. The fuel properties of Gas Oil are adjusted seasonally to maintain good low temperature performance and operability.


Optimizing Web Performance: Understanding Waterfall Charts
Waterfall charts are diagrams which represent how website resources are being downloaded, parsed by the engine, in a timeline that gives us the opportunity to see the sequence and dependencies between resources. It assists in identifying where important events happened during the loading process. They can also let the user easily see how good or bad the performance of their website is, showing you exactly what is slowing down your site.
Waterfall charts within the Dotcom-Monitor platform can help users identify where important events happened during the page load process. Waterfall charts let us see a cascade effect over several tasks, and in the matter of a few seconds, the user can see how bad/good the performance of the website is, such as how many resources are blocking parallel downloads or how many rows exist. The user has the summary on the device, with descriptive visualizations of device statistics on pie charts. Users can also watch the actual URL loading video in the browser window.
The screenshot below is a sample of a waterfall chart of amazon.com to introduce what waterfall charts look like. As you can see, there are a lot of different elements that come into play during page's load time. Some of those factors include the following:
 - URL
 - Test Location
 - Browser (Chrome, Firefox, Internet Explorer, mobile browsers etc…)
 - Connection
 - Number of Tests
 - Repeat View
waterfall chart_amazon
Elements Used in Waterfall Charts
Interactive Slider: The Interactive Slider is an indicator of the performance of each element in terms of milliseconds. In the image below, it is pointed at with the arrow. The user can drag the interactive slider to see which element is being loaded, and in what point in time. In this screenshot, you can see the highlighted elements are being loaded in the 531st millisecond.
Interactive Slider
Load Time Grid: The highlighted area below is called Load Time Grid. It shows how much time it takes to load for each element.
Load Time Grid
Element List: The elements exist in the web page is shown in the Element List. The element's extension can be HTML, CSS, GIF, etc.
Element List
Element Performance: A user can reach the information of the performance of each element that exists in waterfall chart.
Element Performance
When the user clicks on the specific element button, they are welcomed by a performance page, shown below.
Performance PageBy analyzing the performance page, the user has a deeper knowledge about the response details. They can select the desired are and release mouse button to display details. The user can also observe the performance issues by paying attention to the red marked area, which means there is a performance down period.
Load Time Details For Individual Elements: In the waterfall chart, when the user moves their cursor on a specific bar, he is shown a load time details which are DnsTime, ConnectTime, SSLTime, RequestTime, FirstByteTime, ResponseTime, StartTime, EndTime, Speed which is pointed in a red oval.
Load Time Details
Explanation of Color Coding: Within in Dotcom Monitor platform, representation of load time details are defined by the following colors:
Color Coding
Navigation Timings: They can be shown as a column in the waterfall chart to show the Navigation Start, Redirect Start, Redirect End, Fetch Start, Domain Lookup Start, Domain Lookup End, Connect Start, Secure Connection Start, Connect End, Request Start, Response Start, Response End, Unload Event Start, Unload Event End, DOM Loading, DOM Interactive, DOM Content Loaded Event Start, DOM Content Loaded Event End, DOM Complete, Load Event Start, and Load Event End with color coding (shown below within the red oval).
Navigation Timings
It's important to mention that within the Dotcom Monitor platform there is a feature that a user can watch the actual URL loading video in the browser window (shown below).
Load Video Capture
Optimizing Web Performance by Understanding Waterfall Charts
Performance and speed of a web site plays a tremendous role. If your website isn't fast enough, the user will not wait for it to finish loading. A fast website increases conversion rates and leads you to perform well on search engines. To understand the speed of your website, waterfall diagrams are used. Waterfall charts help you to identify the problem source and are a great way to diagnose what's slowing down your web pages.
In a waterfall chart by looking a size of a file which is more than 1MB may cause your site to slow down. With the help of the timeline in the waterfall chart, the user is able to discover the different phases of resource loading and understand which phases slow their website down. Some of the phases are presented below:
 - Receiving. The time it takes to download files. This is the first phase of the timeline. Large files, such as non-optimized images, delays the download time and absorbs more bandwidth, causing a delay on the website. The solution for this specific problem is that the user should optimize media by reducing the size of the images without lowering their quality. To boost the bandwidth availability, the user should keep the images on a cloud server.
 - Waiting time. The time captured by the server to produce a response. If the waiting time is too much, it may mean an overloaded network server or there may be an inefficient code, which must be fixed by software developers by finding the bugs and correcting the code. Moreover, caching utility may decrease the waiting time. In that case, the user should shift from shared hosting to dedicated hosting.
 - Queued request. Consists convenient connections HTTP/HTTP2, HTTP authentication, execution of CSS or JavaScript, SSL connect time, is an important phase of the timeline.
 - DNS lookup. Consists the time for the DNS to resolve and gives the user a big clue what is slowing down the website. In general, most of the scripts are slowing the websites down due to DNS lookup.
When the user identifies the issues that are slowing down their web page with the help of waterfall charts, they can begin to come up with a solution to the problem. Some of the problems and their solutions are represented below.
IssueSolution
Page tracking link
Uninstall or remove the tracking tool that is in use
Slow DNS lookupThe user may use a CDN
Slow server endSend an email to your service provider.
Error due to pluginsThe user may uninstall the plugins.
Unused/bulky theme customizationThe user may hire a web developer
Even abeginner user can quickly understand the specific reasons that are slowing their website down by observing the waterfall charts. For example, long bars means the related element takes too much time to load, red text means an error fetching data, and long gaps between bars means times when there are no requests.
How to Make Websites Load Faster
By using waterfall charts, we can create a great user experience by making a web page load faster.
Decrease the Width of the Waterfall
Website performance can be improved by reducing the amount of time it takes to download the resources which leads reduce the width of the waterfall chart.
If there are long purple bars in the waterfall chart. Purple means time spent performing an SSL/TLS negotiation. In case a user faces with purple continuously, it means the website is not optimized for TLS. The user must optimize TLS performance.
If there's a lot of orange in the waterfall chart. Orange means the initial TCP connection made for your website. Only 2-6 requests to a specific hostname should create a TCP connection. After 2-6 requests, the existing connections are reused. When a user is faced with a lot of orange, they must understand that the website does not use persistent connections. When persistent connection is made, the width of every request will be half since the web browser is not going to make new connections with every request.
If there are long blue bars in the waterfall chart. Blue color means time spent downloading the response. If there is a long blue bar, there's a strong likelihood it's because the resource is too large. Reducing the file size of the file can help solve the problem. A user can decrease the size by image optimization or HTTP compression.
If there is too much green the waterfall chart. The green color means the browser is waiting to get content. To reduce the green, the user should move the static content to a CDN.
Decrease the Height of the Waterfall Chart
Website speed can be improved by decreasing the number of requests the browser needs to perform to load the web page, which leads to decreasing the height of the waterfall. The user must review all their content within each page and decide if they really need it at all.
If there are too many JavaScript/CSS files that are less than 2kb. The user must involve the contents of those files directly in the HTML via inline, , or
tags.
If there are too many JavaScript/CSS files in the waterfall chart. The user must combine them with CMS plugin or as part of a build process. This action will decrease the number of requests made, increase page speed.
If there are too many 302 redirects. Yellow rows mean redirects, which mean links on the page are mistakenly made or outdated, which create unnecessary redirects that increase the height of the waterfall. The solution is to replace those links with direct links.
Increase Render Time
To improve rendering time, the user should optimize the ordering of resource requests, which moves the green Start Render line to the left.
If there are too many requests for separate CSS files. Before browsers start rendering the page, they wait until all the CSS is downloaded


text:
Imphal Peace Museum Project Ⅲ
|Implementing Agency||Sasakawa Peace Foundation|
|Project Type||Self Operated|
The Imphal Peace Museum was successfully opened in the state of Manipur in Northeast India on June 22, 2019. With financial support provided by The Nippon Foundation, this project aims to strengthen the museum's governance structure, develop the capabilities of museum staff and curators, and work to enhance the quality of the museum's programs and exhibits to ensure the successful operation and administration of the museum. Activities include arranging exchange programs that both send experts to visit Northeast India as well as welcome museum stakeholders to Japan, conducting interviews with war survivors in Northeast India to collect oral histories, creating special exhibitions featuring items donated by the bereaved families of those who participated in the Battle of Imphal, and publishing the English translation of the Military History Series: The Battle of Imphal. Through these activities, this project aims to ensure that the Imphal Peace Museum, which has garnered widespread attention within India and around the world, will maintain its high standards as a museum based on rigorous historical research with a universal message of peace and continue to act as a platform for peace education to promote mutual understanding and multiculturalism and to pass down the region's history to future generations.


text:
From June 5-6, 2018, UNAM – UNIVERSIDAD AUTONOMA DE MEXICO will host the international conference "Cities and Climate Change: Science, Policy and Practice to Building together an Action Agenda" under the coordination of Dr Gian Carlo Delgado Ramos, Researcher at the CEIICH – CENTRO DE INVESTIGACIONES INTERDISCIPLINARIAS EN CIENCIAS Y HUMANIDADES, aiming to partake in the construction of spaces for dialogue between academia, decision-makers and practitioners with the purpose of elucidating feasible routes for the advancement of a common action agenda for urban transition.
The conference is framed as a legacy activity of the CITIESIPCC CONFERENCE held this March 2018 in Edmonton, Canada, which sought to inspire the development of border research on cities and climate change.
As such, it is a response to the current trend in which urban settlements are increasingly seen as key spaces to understand and address global ecological change, including climate change.
The themes to be explored at the conference include:
- Climate change implications on human settlements;
- Urbanization and climate change: challenges and solutions;
- Urban networks for facing climate change;
- Climate change policy-making at the local level; and
- Coping climate change in Mexican urban settlements
About UNAM, Cities IPCC, ICLEI Mexico
To register for this event please visit the following URL: http:// →
When & Where
- From: 2018-06-05 12:00 AM
- To: 2018-06-06 12:00 AM
Universidad Nacional Autónoma de México
, , Universidad Nacional Autónoma de México, Mexico City, CDMX, Mexico.


text: Wind resources tend to be significantly stronger and more consistent with increasing altitude. This effect creates a potential for power generation that can be reaped by an Airborne Wind Energy system positioned at elevations exceeding the height of conventional wind turbines. A frequent design for such a system includes a flying airfoil tethered to a ground station. The station can be equipped with a power generator or for the application considered here mounted to a sea vessel. We demonstrate a data based method that can maximize the towing force of such a system by optimizing a low level tracking controller at the presence of constraints. We utilise Gaussian Processes to learn the mapping from the set points of the controller to both the objective and the constraint function.We then formulate a chance - constrained optimization problem that takes into consideration uncertainty in the learned functions. The probabilistic objective function is transformed into a deterministic acquisition function which indicates set points with high probability of improving the current optimum and the constraint function is penalized in regions of high uncertainty to ensure feasibility. Simulation studies show that we can find optimal set points for the controller without the use of significant assumptions on model dynamics while respecting the unknown constraint function.


Drexel University College of Medicine Hahnemann University Hospital
Drexel University College of Medicine
Hahnemann University Hospital
Podiatric Medicine & Surgery Residency (PMSR)
Reconstructive Rearfoot & Ankle (RRA)
Goals: A rotation that allows the resident to directly observe and monitor a patient with chronic
pain under the supervision of a pain management specialist. Skills enhanced during this rotation
include understanding the definition of pain, how patients demonstrate pain, how to assess and
manage chronic pain, theory and application of peripheral nerve blocks, and understanding the
relationship between pain and function.
Competencies: The resident will be able to demonstrate the following competencies:
1. Demonstrate competency in obtaining thorough history from patients with a focus
on patients acute and chronic pain complaints
2. Demonstrate competency in the different etiologies of common pain syndromes
and identify these in an outpatient setting
3. Understand the indications and use of physical therapy, pharmacologic agents,
nerve blocks, psychosocial support in the treatment of pain
4. Understand and perform assessment in pain and function
5. Demonstrate the ability to write reasonable prescription for patients with acute
and chronic pain
6. Understand the pharmacology of opiates, non-narcotic analgesics, and
nonsteroidal anti-inflammatory agents
7. Understand the side effects and complications of acute and chronic pain
management modalities


update the code so that the test passes, and then add another test, and so on.
 When your users change their requirements, disable the tests that are no longer correct. Write new tests and make them work one at a time, in the same incremental manner.
 2. Build the solution, and then in Test Explorer, choose Run All.
 The new test fails.
 The RangeTest fails
 Tip
 Verify that each test fails immediately after you have written it. This helps you avoid the easy mistake of writing a test that never fails.
 3. Enhance the code under test so that the new test passes:
 #include <math.h>
 ...
 double CRootFinder::SquareRoot(double v)
 {
 double result = v;
 double diff = v;
 while (diff > result/1000)
 {
 double oldResult = result;
 result = result - (result*result - v)/(2*result);
 diff = abs (oldResult - result);
 }
 return result;
 }

 4. Build the solution and then in Test Explorer, choose Run All.
 Both tests pass.
 Unit Test Explorer - Range Test passed
 Tip
 Develop code by adding tests one at a time. Make sure that all the tests pass after each iteration.
Debug a failing test
 1. Add another test:

 #include <stdexcept>
 ...
 // Verify that negative inputs throw an exception.
 TEST_METHOD(NegativeRangeTest)
 {
 wchar_t message[200];
 CRootFinder rooter;
 for (double v = -0.1; v > -3.0; v = v - 0.5)
 {
 try
 {
 // Should raise an exception:
 double result = rooter.SquareRoot(v);

 _swprintf(message, L"No exception for input %g", v);
 Assert::Fail(message, LINE_INFO());
 }
 catch (std::out_of_range ex)
 {
 continue; // Correct exception.
 }
 catch (...)
 {
 _swprintf(message, L"Incorrect exception for %g", v);
 Assert::Fail(message, LINE_INFO());
 }
 }
 }

 2. Build the solution and choose Run All.
 3. Open (or double-click) the failed test.
 The failed assertion is highlighted. The failure message is visible in the detail pane of Test Explorer.
 NegativeRangeTests failed
 4. To see why the test fails, step through the function:
 1. Set a breakpoint at the start of the SquareRoot function.
 2. On the shortcut menu of the failed test, choose Debug Selected Tests.
 When the run stops at the breakpoint, step through the code.
 5. Insert code in the function that you are developing:

 #include <stdexcept>
 ...
 double CRootFinder::SquareRoot(double v)
 {
 // Validate parameter:
 if (v < 0.0)
 {
 throw std::out_of_range("Can't do square roots of negatives");
 }

 6. All tests now pass.
 All tests pass
Tip
If individual tests have no dependencies that prevent them from being run in any order, turn on parallel test execution with the UTE_parallelicon-small toggle button on the toolbar. This can noticeably reduce the time taken to run all the tests.
Refactor the code without changing tests
 1. Simplify the central calculation in the SquareRoot function:
 // old code:
 // result = result - (result*result - v)/(2*result);
 // new code:
 result = (result + v/result)/2.0;

 2. Build the solution and choose Run All, to make sure that you have not introduced an error.
 Tip
 A good set of unit tests gives confidence that you have not introduced bugs when you change the code.
 Keep refactoring separate from other changes.
Next steps
 - Isolation. Most DLLs are dependent on other subsystems such as databases and other DLLs. These other components are often developed in parallel. To allow unit testing to be performed while the other components are not yet available, you have to substitute mock or
 - Build Verification Tests. You can have tests performed on your team's build server at set intervals. This ensures that bugs are not introduced when the work of several team members is integrated.
 - Checkin tests. You can mandate that some tests are performed before each team member checks code into source control. Typically this is a subset of the complete set of build verification tests.
 You can also mandate a minimum level of code coverage.
See Also
Adding unit tests to existing C++ applications
Using Microsoft.VisualStudio.TestTools.CppUnitTestFramework
An Overview of Managed/Unmanaged Code Interoperability
Debugging Native Code
Walkthrough: Creating and Using a Dynamic Link Library (C++)
Importing and Exporting


text: We propose a method to implement a speckle-reduced coherent three-dimensional (3D) display system by a combination of integral imaging and photorefractive volume holographic storage. The 3D real object is imaged through the microlens array and stored in the photorefractive crystal. During the reconstruction process a phase conjugate reading beam is used to minimize aberration, and a rotating diffuser located on the imaging plane of the lens array is employed to reduce the speckle noise. The speckle-reduced 3D image with a wide viewing angle can be reconstructed by use of the proposed system. Experimental results are presented and optical parameters of the proposed system are discussed in detail.