text:
Can diamond cut titanium?
- FAQ. Those who are looking for an answer to the question «Can diamond cut titanium?» often ask the following questions
- 1 other answer
- Your answer
- 24 Related questions
Those who are looking for an answer to the question «Can diamond cut titanium?» often ask the following questions:
👉 Diamond or titanium?
Diamonds are harder then titanium. Hardness is measured on a Mohs Scale. Diamond is the hardest at 10.0 vs. titanium is at 6.0 It is important to note that Mohs scale is a not a linear scale.
- Is diamond harder than titanium?
- Is diamond stronger than titanium?
- Is titanium expensive than diamond?
👉 Can titanium cut diamond?
Only diamond can cut diamond.
- Is titanium stronger than a diamond?
- What is stronger titanium or diamond?
- Is diamond is much stronger than titanium?
👉 Can diamond cut titanium steel?
Yes, a diamond tipped tool can cut through titanium steel.
- Is the hardest material diamond or titanium?
- Question: is titanium stronger than a diamond?
- Quick answer: is titanium stronger than diamond?
1 other answer
We've handpicked 24 related questions for you, similar to «Can diamond cut titanium?» so you can surely find the answer!
Which is more expensive titanium or diamond?
You can purchase raw titanium for probably less than US$30/Kg, whereas for a cut diamond weighing one carat or .20 grammes, you can spend US$2,000-$8,000.
Which is stronger titanium or diamond bar?
It is hard to say, but diamonds are the most powerful tool of all. A diamond is as hard as steel, and has an extremely high tensile strength. Titanium, on the other …
Which is stronger titanium or diamond crystal?
Diamond strength is ~60 GPa (it seems like a diamond is somewhat stronger…) Titanium hardness is 36 Rockwell C Diamond hardness is 98.07 Rockwell C
Quick answer: is titanium stronger than a diamond?
Is steel stronger than diamond? Actually Titanium is not stronger nor harder than a good grade steel, the only advantage it has over steel is the fact it is a much lighter metal with similar to steel qualities. Though it doesn't even come close to a Diamond in strength or hardness. But a diamond is SIX times harder than Topaz.
What happens when you mix diamond with titanium?
It goes ker-splode
Which is stronger titanium or diamond engagement ring?
Platinum is incredibly resistant to wear and tear. The metal is extremely strong and will both hold stones securely and be resistant to scratches. This durability promotes longevity and is what sets platinum apart from other metals. Titanium is also incredibly strong, durable, and scratch-resistant.
Which is stronger tungsten or titanium or diamond?
Diamond is the hardest natural mineral. Your question implies strength, not hardness. Strength implies molecular cohesion. You could devise an experiment to pull a diamond apart, but it would be a nearly impossible experiment, because anything you attach to a diamond would not be strong enough to effectively pull the diamond apart.
Can a titanium pair of scissors break a diamond?
A titanium pair of scissors would not be able to cut a diamond in half. Diamonds are the 'hardest' mineral known.
Titanium vs. diamond showdown! what is the stronger substance?
The Metal Mindset Episode 3This week we look into which is stronger? Titanium or Diamond? Among many other metal facts about Titanium and what kind of metal...
Diamonds to titanium?
Hello, everyone I recently noticed that Diamond plating can be deconstructed into Titanium. It takes 5 diamonds and a Solenoid to make one diamond plate. But, if you put that plate into your crafting table, it will give you 5 titanium, which means that if you have enough diamonds, you never will...
Titanium jewelry bracelets?
USWEL Pure Titanium Bracelet for Women Crystal Magnetic Bracelet Pain Relief for Arthritis and Carpal Tunnel Migraines Tennis Elbow 20 $30 90 ($30.90/Count)
Titanium jewelry crosses?
Titanium Cross Necklaces There is nothing like the inimitable beauty of a titanium cross necklace. All of the titanium cross necklaces in our collection are specially designed with an opening at the top of the cross to fit the chain through. This provides a clean and modern look, and also keeps the titanium chain from tangling during wear.
Can diamonds cut titanium?
Can tungsten or titanium scratch or even cut diamond? Diamond can easily scratch titanium and titanium alloys. Titanium and its alloys are middle-density, middle-strength, middle-hardness materials that have a really, really good PR department.
Does titanium jewelry rust?
Do titanium rings rust or tarnish? Titanium does not rust, rather it develops a titanium oxide coating. The coating creates a dull grey color while keeping the integrity of the metal's smooth surface.
Does titanium jewelry tarnish?
Titanium does not tarnish. It might get some scratches from everyday wear and tear of if you subject it to heavy-duty stuff, but that can be quickly sorted with refining procedure to remove them. After, the titanium jewelry will be looking good as new. When left to age, titanium rings get a beautiful patina that looks close to a satin finish.
Is titanium jewelry expensive?
Well it depends upon the designs and size of titanium jewellery. So here we can say titanium jewellery is not much expensive that you imagine.
Is titanium jewelry real?
Titanium-Jewelry.com has collected 493 reviews with an average score of 4.83. There are 484 customers that Titanium-Jewelry.com, rating them as excellent.
What cleans titanium jewelry?
Anodized titanium jewelry has been through a chemical process to change the color of the metal. Anodized titanium jewelry should be cleaned only with warm, soapy water. Titanium rings that have not been anodized can also be cleaned simply with soap and warm water.
What is titanium jewelry?
Titanium Jewelry - Rings, Bracelets, Necklaces & More! 1. What color is titanium? Titanium is a light-weight and strong metal is ranges from gray to silver in color. Polished... 2. Does titanium come in different colors? Titanium is a reactive metal that can be anodized in different colors by... 3…
Who buys titanium jewelry?
In 2002, I opened Titanium-Jewelry.com to focus on titanium rings and wedding bands. Many younger men wanted something other than the old boring white or yellow gold wedding band. They wanted something different, modern, unique and most jewelers were not meeting their needs. So my passion for contemporary jewelry began.
Will jewelry titanium combust?
safety guidelines for titanium in hyperbaric medicine, we recommend the following preventive measures: 1. Breakable titanium and titanium alloy items in-cluding eyeglasses and jewelry should not be per-mitted in a hyperbaric
Will titanium jewelry tarnish?
I'm here to tell you that this is not true. It only depends on the alloy content. Nonetheless, it's not every day that the gold will tarnish. Does titanium tarnish? In the jewelry world, one of the metals that people are buying a lot of today is titanium, and it's all for good reasons.
Are diamond rings limited to gold, silver and platinum bands, or can i buy a diamond titanium ring?
Titanium diamond rings, while more rare than gold, silver and platinum, are available at certain jewelers.
Are titanium rings good quality?
Titanium is a more resistant material, it doesn't rust and it weighs a lot less than gold in any of its variants. Titanium rings are difficult to scratch and bend out of shape, therefore perfect for those who are afraid of damaging their rings.


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Rhode Island Violent Crimes Lawyer
FBI statistics show that more than 2,500 violent crimes were committed in Rhode Island during 2015 resulting in over 800 arrests. Although those numbers are high – they are down considerably from the state's highest points in _PHONE_ with well over 4,ooo recorded violent crimes.
Violent crime is frightening. Its randomness provokes fear and a feeling of helplessness: if it is random, how can you protect yourself? Public outcry and political reaction to it put considerable pressure on law enforcement to prevent violent crimes and to punish them severely when they do occur.
Sometimes that public pressure leads law enforcement to be overzealous in their desire to solve violent crimes and reassure the public. It's the job of Rhode Island violent crimes attorney to protect your rights and make sure that this zeal doesn't end up snaring innocent people.
Most Common Reasons for Arrest in Rhode Island
According to data provided by the Uniform Crime Reporting Program, property crime and violent crime are the most common reasons for arrest in Rhode Island.
Did You Know?
- East Greenwich is the safest city to live in Rhode Island, with a violent crime rate of 7.6.
- The overall crime rate in Providence, Rhode Island is 38% higher than that of the national average.
- You have a 1 in 26 chance of becoming a victim of any crime in Providence.
- There are about 10 daily crimes committed for every 100,000 people.
- Providence, Rhode Island is safer than 17% of the cities in the United States.
- Year over year, the number of crimes in Providence, Rhode Island have decreased by 9%.
Penalties Are Severe
All violent crimes carry significant penalties upon conviction, but the severity varies considerably depending on the specific violent crime. At the extreme end is first degree murder, punishable by 20 years to life. Simple assault or battery charges, in comparison, calls for a maximum prison term of one year and up to $1,000 in fines. Many violent crimes carry sentences of 10 to 20 years and, as a general rule, the more violent, the more severe the sentence.
For violent crimes that also amount to domestic violence, the penalties are enhanced further. For violent crimes that fit the state's hate crime law, the penalty can be increased an additional 1 to 5 years.
Violent Crime Defense in Rhode Island
Violent crime charges can be defended on many different grounds. The types of defense can generally be grouped into the following four categories:
- Affirmative defenses, which admit the facts that the state is charging you with, but claim that your actions were justified. Self defense is the classic example: "Yes, I hit the victim, but only to stop him from stabbing me."
- Defenses that directly attack the accuracy of the facts alleged by the state. Examples include claims that the state has identified the wrong person as the culprit, that the defendant did not have a gun as the state claims, or that a key state witness is lying or simply mistaken.
- Defenses that attack the state's proof of an essential element of the crime. Examples include the lack of "malice aforethought" in a case charging first degree murder, or that there was no coercion in a case charging first degree sexual assault.
- Procedural defenses, like failure to provide a speedy trial. These may result in dismissal of the charge (like failure to provide a speedy trial), or simply make it harder for the state to prove its case by getting preventing some evidence from being used.
It takes considerable time and experience to identify the defenses most likely to succeed. Any challenge to the accuracy of the facts alleged by the state requires significant investigation and interviewing of witnesses.
Call an Experienced Rhode Island Violent Crimes Attorney
If you have been accused of committing a violent crime in Rhode Island, get legal help. The sooner you get the advice of an experienced criminal defense lawyer, the better your chances of still being free when the case is over. Seemingly innocent statements that you make to the police, or even to a cellmate in the local jail, can come back to haunt you. Talk to an experienced defense lawyer before you talk to anyone else.
Violent crime cases are high stakes battles. On one side are the prosecutors, well equipped and with the power and resources of the state at their command. On the other side are you and your defense lawyer. The cases are complex, and many different factors can be considered to increase the potential penalties. Important questions and issues arise quickly and need to be quickly addressed.
Rhode Island criminal defense attorney Stefanie A. Murphy has years of successful experience handling a wide variety of violent crime cases in Rhode Island. She can protect your rights throughout the proceeding by, among other things:
- Working to obtain your release pending trial
- Explaining the case and the various twists and turns it may take
- Seeing to it that the state fulfills its obligations on time limits, points of procedure and sharing evidence with you
- Investigating the state's witnesses for reliability, bias, etc.
- Identifying witnesses whose testimony works in your favor
- Advising you on any plea deals
- Presenting any of the defenses discussed above become relevant to your case as the facts are developed
Call the Law Offices of Stefanie A. Murphy today. There is no charge for your initial consultation.

source: openbmb/Ultra-FineWeb


by its two vectors.6
Orientation on manifolds
The orientation of a volume may be determined by the orientation on its boundary, indicated by the circulating arrows.
One can also discuss orientation on manifolds. Each point p on an n-dimensional differentiable manifold has a tangent space TpM which is an n-dimensional real vector space. One can assign to each of these vector spaces an orientation. However, one would like to know whether it is possible to choose the orientations so that they "vary smoothly" from point to point. Due to certain topological restrictions, there are situations when this is impossible. A manifold which admits a smooth choice of orientations for its tangents spaces is said to be orientable. See the article on orientability for more on orientations of manifolds.
See also
References
 1. ^ Rowland, Todd. "Vector Space Orientation." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. _URL_
 2. ^ Weisstein, Eric W. "Orientation-Preserving." From MathWorld--A Wolfram Web Resource. _URL_
 3. ^ Leo Dorst, Daniel Fontijne, Stephen Mann (2009). Geometric Algebra for Computer Science: An Object-Oriented Approach to Geometry (2nd ed.). Morgan Kaufmann. p. 32. ISBN 0-12-374942-5. "The algebraic bivector is not specific on shape; geometrically it is an amount of oriented area in a specific plane, that's all."
 4. ^ B Jancewicz (1996). "Tables 28.1 & 28.2 in section 28.3: Forms and pseudoforms". In William Eric Baylis. Clifford (geometric) algebras with applications to physics, mathematics, and engineering. Springer. p. 397. ISBN 0-8176-3868-7.
 5. ^ William Anthony Granville (1904). "§178 Normal line to a surface". Elements of the differential and integral calculus. Ginn & Company. p. 275.
 6. ^ David Hestenes (1999). New foundations for classical mechanics: Fundamental Theories of Physics (2nd ed.). Springer. p. 21. ISBN 0-7923-5302-1.
External links
Creative Commons License


text:
Wednesday, 12 February 2003
Analysis of midlatitude storms with winds and pressures from QuikSCAT
The analysis of mid-latitude storms with QuikSCAT data is greatly facilitated by surface pressure fields in conjunction with the surface winds. A technique for deriving the surface pressure map from QuikSCAT data along a swath using the University of Washington Planetary Boundary Layer (PBL) nonlinear similarity model is shown to produce fields comparable with those of NCEP. Some increased detail is available from the QuikSCAT superior 25-km resolution. The storm center is well-defined, agreeing with numerical model results in the Northern Hemisphere while yielding better location and stronger storms in the tropics and Southern Hemisphere. The fronts, including some information about the development of frontal waves, are evident to within 25 km. In addition, the surface pressure fields, with their concurrent geostrophic and gradient winds, are advantageous for smoothing the surface winds and replacing rain-contaminated or missing data. A description of the techniques, verification of the product and some examples will be given.
Supplementary URL: _URL_

source: m-a-p/FineFineWeb


Take the 2-minute tour ×
Some background: my coauthors and I are working on a problem which deals with the exponential growth rates of certain infinite products of matrices. One of the sub-problems which arises in this project is to prove that a particular function from the unit interval to the reals, which describes the growth rates of a family of related infinite matrix products, does not have any line segments in its graph. Now, the existence of a line segment would imply the existence of a pair of matrices some of whose characteristics coincide in a precise way. We have found an analytic proof that the graph cannot contain line segments, but it is long and displeasingly ad-hoc, and we would rather like to replace it with a shorter argument! Hence, we have found ourselves wondering whether there is an algebraic obstacle which would prevent these coincidences from occurring.
The question which arises from this research, then, is:
Do there exist matrices $A,B \in SL(2,\mathbb{Z})$ which satisfy the following constraints: the matrices $A$ and $B$ have only positive entries, do not commute, and satisfy $$\rho(AB)=\rho(A)\rho(B),$$ $$\mathbb{Q}\left(\rho(A)\right)=\mathbb{Q}\left(\rho(B)\right) \neq \mathbb{Q},$$ where $\rho$ denotes spectral radius?
The non-existence of such a pair of matrices would imply the non-existence of the line segments mentioned above.
One of my coauthors suspects that the spectral radius constraints on $A$ and $B$ cannot be met unless $A=C^k$, $B=C^\ell$ for some $C \in SL(2,\mathbb{Z})$ and $k,\ell \in \mathbb{N}$, which would contradict the hypothesis that $A$ and $B$ do not commute. Any solutions which end up being used in our paper will of course be gratefully acknowledged!
share|improve this question
Some thoughts. I believe the second condition requires that tr A = tr C^k and tr B = tr C^l for some C in SL(2, Z). If we then write A = C^k + X, B = C^l + Y where X, Y are traceless, the first condition is equivalent to the statement that X C^l + C^k Y + XY has trace zero. I think I can show this is impossible if X = 0. – Qiaochu Yuan Jun 8 '10 at 16:00
Ian Agol's answer has been incorporated into the article "On a Devil's staircase associated to the joint spectral radii of a family of pairs of matrices" which will be published in Journal of the European Mathematical Society in late 2012. – Ian Morris Dec 14 '11 at 11:06
1 Answer 1
up vote 9 down vote accepted
This is true: if one has two matrices $A, B \in SL_2 C$, and one knows the three traces $tr(A),tr(B),tr(AB)$, then this uniquely determines the matrices $A,B$ up to conjugacy if $A$ and $B$ generate a non-elementary discrete group (except in a few degenerate cases which won't occur for positive matrices). See for example Maclachlan-Reid. Since $tr(X) = \rho(X)+\rho(X)^{-1}$ for a positive matrix $X$, this implies that the three matrices have the same traces as two commuting matrices with the same traces, and therefore $A,B$ must be conjugate to a pair of commuting matrices. In fact, as your coauthor suspects, then they must be powers of the same matrix.
Addendum: I'll give some details of the argument, and I forgot a condition ($A$ and $B$ might generate a solvable group otherwise, although this is not possible for discrete groups).
Assume that $A, B \in SL_2 Z$. We want to show that $tr(A),tr(B),tr(AB)$ uniquely determine $A$ and $B$ up to conjugacy in $SL_2 C$.
Since $A$ is a positive matrix in $SL_2 Z$, we may conjugate it in $SL_2 R$ to be of the form $$ A=\begin{pmatrix} \lambda & 0 \\\ 0 & \lambda^{-1} \end{pmatrix} $$ where $\lambda >1$ (because $tr(A)>2$). We conjugate $B$ by the same matrix, and relabel so that $$ B=\begin{pmatrix} a & b \\\ c & d \end{pmatrix}. $$
If $A$ and $B$ commute, then we check that $b=c=0$, so in particular $ad=1$. Conversely, if $ad=1$, then we conclude that $bc=0$, and therefore $b=c=0$ since $A,B$ cannot generate a noncommutative solvable group since $SL_2 Z$ is discrete (see below).
From now on, let's assume that $A$ and $B$ don't commute.
The centralizer of $A$ in $SL_2 C$ consist of matrices of the form $$ \begin{pmatrix} z & 0 \\\ 0 & z^{-1} \end{pmatrix}. $$
We may conjugate $B$ by the centralizer of $A$ to be of the form $$ B=\begin{pmatrix} a & 1 \\\ ad-1 & d \end{pmatrix}. $$ Here I'm making use of the fact that $A,B$ are conjugate into $SL_2 Z$ to conclude that they don't generate a solvable group. This follows from the Margulis lemma (or an easy exercise). If $B$ had off-diagonal entries which were zero, then $\langle A, B\rangle$ would be solvable. The point is that then we may conjugate by elements of the centralizer of $A$ in $SL_2 C$ to arrange the upper right entry to be 1.
Thus, we have $$tr(A)=\lambda+\lambda^{-1}, tr(B)=a+d, tr(AB)=\lambda a +\lambda^{-1} d.$$
Now we compute $$a= \frac{\lambda tr(AB)-tr(B)}{\lambda^2-1}, d= \frac{\lambda^{-1} tr(AB)-tr(B)}{\lambda^{-2}-1}.$$
Thus, $tr(A), tr(B), tr(AB)$ canonically determine $A,B$ up to conjugacy (of course $\lambda$ is uniquely determined by $tr(A)$ given $\lambda >1$).
Now, we need to check that $\rho(AB) \neq \rho(A)\rho(B)$, where $\rho(A)=\lambda, \rho(B)=\mu$. If not, $tr(AB)=\lambda\mu +(\lambda\mu)^{-1}$ (again since $AB$ is positive). Plugging into the above equations, we conclude that $a=\mu, d=\mu^{-1}$, a contradiction.
I'm sure this argument can be simplified, but I wanted to carry through the sketch of the argument I gave the first go around.
Also, one may see that any subgroup of commuting matrices in $SL_2 Z$ is either powers of a parabolic element, a hyperbolic element, or a finite-order element.
share|improve this answer
Thanks! Could you provide a reference for the general result which you use here (or a name or keyword, so I can look it up myself)? – Ian Morris Jun 8 '10 at 17:00
I think the statement is false in SL_2(C); in the setup in my comment above one can take k = l = 1, C = [[2 3][3 5]], X = 0, and Y = [[b+c b][c -b-c]] where b^2+3bc+c^2 = 0. – Qiaochu Yuan Jun 8 '10 at 17:42
_USER_: Did you check that your pairs of matrices are nonconjugate? Remember, there is a 1-parameter family of matrices commuting with C. I think you've found a parametrization of the matrices obtained by conjugating B by this family (although I didn't check your formulae). – Ian Agol Jun 9 '10 at 23:25
Qiaochu's examples don't commute. Also, he might as well take the square root of C, [[1,1][1,2]]. – Ben Wieland Jun 10 '10 at 0:33
Agol: thank you for this excellent and very useful extended answer! – Ian Morris Jun 11 '10 at 12:33
Your Answer


text:
A macro replaces the original text in the code before the compiler start to process the file. I.e. every single place where you use the macro will get a duplicate of the code.
A function is a complete section of code i.e. no duplication occur.
Consider macros to be evil and stick to using functions instead, at least until you have a LOT of programming experience. There is no end in how many hard to solve issues you can create for yourself with the use of macros...
Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are, by
definition, not smart enough to debug it.
- Brian W. Kernighan
No: From the call alone, it is not possible to know if you are using a macro, a function, or an object's operator().
However, there is a very widespread coding practice that says that macros should be in ALL_CAPS:
DO_SOMETHING(); //Probably a macro
do_something(); //Probably a function
Is your question related to IO?
Read this C++ FAQ LITE article at parashift by Marshall Cline. In particular points 1-6.
It will explain how to correctly deal with IO, how to validate input, and why you shouldn't count on "while(!in.eof())". And it always makes for excellent reading.
Another downside to macros is that they don't obey the C++ scoping rules.
ANYTHING that matches the macro name is replaced by the pre-processor.
Anybody who has named a member function GetMessage when using Windows and MFC will know what I mean.
(The preprocessor will replace ANY GetMessage with GetMessageA or GetMessageW, depending on whether the setup is ASCII or Unicode. The compiler will then complain that your class doesn't contain a definition of one of these! )
"It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong."
Richard P. Feynman

source: HuggingFaceFW/fineweb-edu


Download Article Download Article
Although there's no longer a tool for adding free polls to your personal News Feed, there are many other ways to poll friends and followers on Facebook. If you are the admin or editor of a Facebook Page for a business, organization, or personality, you can create a free two-question poll for your followers. If not, you can use Facebook's Polls sticker feature to add a poll to your story. Finally, if the people you want to poll are members of a Facebook Group, you can create a Group-specific poll.
Method 1 of 3:
Creating a Poll on a Facebook Page
 1. 1
 Open Facebook on your computer, phone, or tablet. If you're using a phone or tablet, tap the blue and white "f" icon typically found on the home screen or in the app drawer. On a computer, navigate to _URL_ and log in with your username and password.
 - Use this method if you are the administrator of a Facebook Page. Facebook Pages are different than personal profiles and are usually created for businesses, organizations, services, and other non-personal things. See How to Create a Facebook Page to learn how to create a Page.
 2. 2
 Navigate to your Facebook Page. The steps are a little different depending on how you're accessing Facebook:
 - If you're using a phone or tablet, tap the menu icon that looks like three horizontal lines at the top or bottom of the screen, select Pages, and then tap your Page name.
 - On a computer, click the Pages link in the left column and select your Page.
 3. 3
 Click Write a post, Post, or Publish. One of these options will be at the top of your Page. This is the area in which you'd usually type the contents of your post.
 4. 4
 Select the Poll option. If you're using a phone or tablet, scroll down and tap Poll. On a computer, click the three dots and select Poll.
 5. 5
 Type your question. Enter the question you'd like to ask the people who follow your Page.
 6. 6
 Create two answers. Under the question, you'll find two boxes—Option 1 and Option 2. Enter a different possible poll answer into each box. Each answer can be a maximum of 25 characters in length.
 7. 7
 Select an ending time for the poll. The default is 1 week, but you can change this by clicking it and selecting a different option.
 8. 8
 Click Share Now or Share. This shares your poll with anyone who follows your Facebook Page.
 - Poll results will be updated live as people vote. To see the results, you'll need to vote on the poll yourself or wait until the poll expires.
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Method 2 of 3:
Creating a Facebook Story Poll
 1. 1
 Open the Facebook app on your phone or tablet. It's the blue and white "f" icon typically found on the home screen or in the app drawer. Although Facebook no longer has a free poll option that works on your News Feed, you can poll your friends on your desired topic by creating a story.[1]
 2. 2
 Tap + Add to Story. It's at the top-left corner of your News Feed.
 3. 3
 Add a photo or video. To create a poll, you'll need to start with an image or video. Tap an option from your camera roll, or choose a style from the top to create something new.
 - If it's your first time creating a story, follow the on-screen instructions to give Facebook appropriate access.
 4. 4
 Tap the sticker icon. It's the smiley square at the top-right corner. The sticker panel will appear.
 5. 5
 Tap POLL. It's one of the buttons in the second section.
 6. 6
 Type your question. Tap the Ask a question… field and type the question you want to ask your followers.
 7. 7
 Tap YES and NO to customize the answers. If you're asking a yes-or-no question you can leave these alone. Otherwise, customize each button by tapping it and entering your desired text.
 8. 8
 Tap Done at the top-right corner. This saves your poll question.
 - You can add other poll questions in subsequent story posts.
 - To adjust the privacy for your poll, tap the gear icon at the bottom-left corner and make your selections.
 9. 9
 Tap Share to Story to post your poll. Now that you've shared your poll, viewers can cast their votes by tapping one of the two answers. Your poll will be available on your story for 24 hours before disappearing immediately.
 10. 10
 View the results. To see how people are answering your poll, tap your story at the top of your News Feed, then swipe up when you see the poll question.
 - Anyone who votes on your poll will also see the results after voting. They won't see who voted on what, but they'll see which answer has received the most votes thus far.
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Method 3 of 3:
Creating a Group Poll
 1. 1
 Open Facebook on your computer, phone, or tablet. If you're using a phone or tablet, tap the blue and white "f" icon typically found on the home screen or in the app drawer. On a computer, navigate to _URL_ and log in with your username and password.
 - Use this method if you want to poll the users of a Facebook Group you belong to.
 2. 2
 Navigate to your Groups. If you're using the mobile app, tap the menu that looks like three horizontal lines at the bottom or top corner of the screen and select Groups. On a computer, click the Groups link in the left panel.
 3. 3
 Select the Group you want to poll. Keep in mind that only users of the Group you select will be able to answer your poll questions.
 4. 4
 Select the Poll option. The steps are a little different depending on your platform:[2]
 - Android: Tap Share something with the group…, scroll down, and then tap Poll.
 - iPhone/iPad: Tap the three dots next to "Write something" and select Create a Poll.
 - Computer: Click Write something… near the top of the group and select Poll.
 5. 5
 Type your poll question. Tap the Add something field to start typing the question you want to ask.
 6. 6
 Tap Add a poll option or Add Option to add poll answers. The wording will vary depending on your platform, but it'll appear below the question. After entering your first possible answer, tap the Add option again to add an alternative.
 7. 7
 Tap Publish or Post. Again, the option you see will vary by platform. This shares your poll with the Group.
 - Poll results will be updated live as people vote. To see the results, you'll need to vote on the poll yourself.
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Community Q&A
Search
Add New Question
 - Question
 How can I send the link via email to participants?
 Community Answer
 Community Answer
 Copy the link by highlighting it and pressing ctrl + c. Then, go to your document/email and paste the link using ctrl + v.
 - Question
 How can I send my Facebook survey to specific groups?
 Community Answer
 Community Answer
 Once you reach the Publish menu, the left hand side box named 'Publishing Tools' has an option (a link) named 'Share Dialog'. Click on the link. You will get options to publish it to everyone, specific groups, individual members and many more.
 - Question
 Can I have more than 2 options for answers on a Facebook survey?
 Community Answer
 Community Answer
 No unfortunately you can't. Use the survey app on facebook for better surveys.
Unanswered Questions
 - Where is the poll option on the Facebook app?
 - Why can't I have more then 2 items on a poll on Facebook?
 - Where is the poll option located on Facebook?
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 About This Article
 Nicole Levine, MFA
 Written by:
 Tech Specialist
 This article was written by Nicole Levine, MFA. Nicole Levine is a Technology Writer and Editor for wikiHow. She has more than 20 years of experience creating technical documentation and leading support teams at major web hosting and software companies. Nicole also holds an MFA in Creative Writing from Portland State University and teaches composition, fiction-writing, and zine-making at various institutions. This article has been viewed 114,604 times.
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 Co-authors: 5
 Updated: April 2, 2020
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 Categories: Facebook | Making Surveys
 Article SummaryX
 1. Open the Facebook app.
 2. Tap Add to Story.
 3. Add a photo or video.
 4. Tap the sticker icon.
 5. Tap POLL.
 6. Type your question.
 7. Customize the Yes and No buttons.
 8. Tap Done.
 9. Tap Share to Story.
 Did this summary help you?
 Thanks to all authors for creating a page that has been read 114,604 times.
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 Joseph Emmanuel Raphael Passchier
 Jun 11, 2017
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Category: Maths Using and Applying L2
Abbreviation: MU L2
Pupils select the mathematics they use in some classroom activities. They discuss their work using mathematical language and are beginning to represent it using symbols and simple diagrams. They explain why an answer is correct.
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1. When you're locked out of your vehicle, workplace, or home, you find yourself in an unwanted situation. If this incident happens during the daytime, then you would actually pay too much heed to the result. During these hours, one can depend on their associates and relatives for assistance.
2. Whenever you misplace your keys, it indicates 2 things; either your keys are lost or that they were stolen. In both situations, you're at great risk. If the keys are stolen, then the most likely purpose behind the act was a robbery. Likewise, if the lost keys fall into the wrong hands, robbery is an apparent event. Replacement of the lock is the only way to avoid these unwanted events. Failure to do so would result in a great deal of financial and emotional distress. Failure to do so will invite loads of financial and emotional distress. Calling the dc locksmith company will make sure that your locks are replaced within a short time duration.


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The World Of Cinema
has long served as a powerful medium for storytelling, reflecting the experiences and perspectives of diverse communities. In recent years, there has been a surge in films exploring the lives of Lesbian, Gay, Bisexual, Transgender, Intersex, and Queer (LGBTIQ+) individuals. These films offer a window into their journeys, struggles, and triumphs, fostering understanding and promoting empathy across societal boundaries.
This article delves into the captivating world of LGBTIQ+ cinema, highlighting some of the most impactful and thought-provoking films that have shaped the landscape.
- Love, Simon (2018): This heartwarming teen comedy-drama follows Simon, a high school student navigating the complexities of coming out to his family and friends. With its relatable characters and optimistic message, "Love, Simon" resonated with audiences worldwide, sparking conversations about acceptance and self-discovery.
- Tomboy (2011): Set in contemporary France, "Tomboy" tells the story of Laure, a young girl who prefers to present as a boy. The film explores themes of gender identity and childhood exploration with sensitivity and authenticity, generating critical acclaim for its nuanced portrayal.
Love and Relationships:
- Call Me by Your Name (2017): This poignant coming-of-age drama chronicles the blossoming romance between Elio, a 17-year-old boy, and Oliver, his father's visiting research assistant. Set against the backdrop of a sun-drenched Italian summer, "Call Me by Your Name" captures the beauty and heartbreak of first love with stunning visuals and powerful performances.
- Carol (2015): In 1950s New York City, department store employee Therese finds herself drawn to Carol, an elegant older woman going through a difficult divorce. "Carol" is a visually stunning and emotionally charged love story that explores forbidden desires and societal constraints in a bygone era.
Social and Political Realities:
- Moonlight (2016): This deeply moving coming-of-age story follows Chiron, a young Black man grappling with his sexuality and identity in a tough Miami neighborhood. Told in three chapters, "Moonlight" offers a powerful and poetic exploration of masculinity, self-acceptance, and the impact of societal pressures on marginalized communities.
- Pride (2014): This uplifting historical drama takes viewers back to 1984 when a group of lesbian and gay activists in London come together to support striking miners in Wales. "Pride" celebrates the power of solidarity and activism while showcasing the challenges and triumphs of the LGBTQ+ rights movement.
It's crucial to recognize that LGBTIQ+ films are not a monolithic entity. This genre encompasses a diverse range of stories, characters, and experiences, showcasing the vast spectrum of identities within the LGBTQ+ community. Films like "The Watermelon Woman" (1996) and "Pariah" (2011) delve into the experiences of Black lesbians, while "Happy Together" (1997) and "Disobedience" (2018) explore the complexities of queer relationships across cultures.
Importance of LGBTIQ+ Representation:
LGBTIQ+ films play a vital role in fostering inclusivity and representation in the media landscape. These films offer opportunities for audiences to connect with characters who share their experiences, or gain a deeper understanding of the lives and challenges faced by LGBTQ+ individuals. Seeing oneself or one's community reflected on screen can be incredibly empowering and foster a sense of belonging.
LGBTIQ+ cinema offers a rich tapestry of stories that not only entertain but also educate, challenge perspectives, and inspire change. As the genre continues to evolve, it paves the way for greater visibility, understanding, and acceptance of LGBTQ+ individuals within society.
This is just a starting point, and there are countless other incredible LGBTIQ+ films waiting to be discovered. By actively seeking out and engaging with these diverse stories, we can work towards creating a more inclusive and equitable world for all.


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While I was browsing here I came across an interesting question so I decided to see what the answer was and well, I had some difficulties understanding it. I'll quote a short part of the answer.
If the fretted note is higher (sharper) than the harmonic, then the length of the string needs to be lengthened. If the harmonic note is sharper, then the length of the string needs to be shortened.
So my question is what is a harmonic note as described in the above quote? I have close to no knowledge of music theory but I've started a course to learn it.


Pharmacy Times
A Pharmacist's Exclusion from Federal Health Plans
Author: Joseph L. Fink III, BSPharm, JD
When a pharmacist pleads guilty to charges related to controlled substances and is then notified by federal authorities that he will be excluded from participating in federal health programs, can he avoid the consequences of his guilty plea?
When a pharmacist is charged with a number of serious offenses related to controlled substances and enters into an agreement to plead guilty if the state will not oppose a deferred judgment, and subsequently is notified by federal authorities that he will be excluded from participating in federal health programs, can he avoid the onerous collateral consequences of his guilty plea?
A pharmacist who practiced on a part-time basis in a Midwestern state was the subject of a theft warrant. Upon his arrest, the police searched his vehicle and found 57 prescription containers. He initially told the police that he was a pharmacy technician and intended to destroy the medications. His employer had a different story, reporting to the police that the pharmacist did not have permission to remove the medication containers from the pharmacy. All this led to the pharmacist being charged with 3 felony counts of violating the state's controlled substances statutes.
Following negotiations with state prosecutors, the pharmacist entered into a plea agreement: he would plead guilty to 3 felony counts plus 1 misdemeanor if the prosecutors would agree not to oppose his request that the court grant him a deferred judgment. A deferred judgment means that the court will hold off entering a final judgment on the matter if the defendant meets certain stipulated conditions within a specified period of time. Those conditions could include probation, community service, some form of community supervision, or participation in a diversion program or treatment program. The pharmacist was on supervised probation for 2 years and had to undergo random drug testing. Typically, if such conditions are met, the court that originally dealt with the matter may dismiss the case or expunge the record.
Following the handling of the case at the trial court level and the court's approval of the plea agreement, the pharmacist received a letter from the federal government notifying him that he was being excluded "from eligibility to participate in any capacity in the Medicare, Medicaid, and all federal health care programs" as a result of his felony "convictions." The "practical impact of the letter was that the defendant was virtually unemployable as a pharmacist."
The pharmacist in the instant case did fulfill the conditions of probation and returned to the trial court to ask it to vacate the conviction. The trial court denied this request, and the pharmacist took the matter to the state supreme court. One of the arguments advanced on appeal was that he had ineffective assistance of counsel at the trial court level because he was not alerted to the possible collateral consequences of his guilty pleas (ie, exclusion from federal programs due to this state-level conviction).
The state supreme court looked at the relevant state statutes governing post-conviction relief and agreed with the decision of the trial court that the conviction should not be vacated.
The state's highest court presented a protracted and detailed discussion of the law of the state on the matter of post-conviction relief, but of greatest interest to pharmacy audiences is the discussion about collateral consequences. The court noted that "In recent years, there has been a striking growth of what is generally termed 'collateral consequences' that flow from a criminal conviction." Federal law imposes dozens of sanctions on persons with felony drug convictions.
Addressing the issue of effective assistance of counsel, the court noted that "Recent developments in the law of the right to effective assistance of counsel have recognized the need for lawyers representing criminal defendants to advise their clients of the direct collateral consequences of a plea bargain." It pointed to a US Supreme Court case in which an attorney failed to advise his client that entering a guilty plea to controlled substances offenses would result in his deportation, with that failure equating to ineffective assistance of counsel.
The bottom line for the state supreme court, after reviewing a long line of earlier case decisions, was that a guilty plea pursuant to a "deferred judgment" is not a conviction under the law of that state. It noted that some other states did indeed treat deferred judgments as convictions for purposes of post-conviction relief statutes, but that was not how the legislature in their state had approached the matter. As a result, the pharmacist had to live with the deal he had struck with the prosecutors.
Note: The Office of the Inspector General of the US Department of Health and Human Services reported that as of April, 2013, there were in excess of 51,000 individuals excluded from participation in federal health care programs. Such exclusions are typically for a stated period of time (eg, 5 years). The lesson from this case is that a defendant considering a possible plea agreement should discuss with competent counsel all possible ramifications of that action.


Level: ECE/Toddler
Grades: Pre-K | Age: 2-5 | Written by: Jessica
[Jessica is a teacher at the Quinsigamond Child Study Center, in Worcester, MA]
Preschoolers will create a collaborative painting together using coffee cans, paint and golf balls.
What You Need:
-Empty Large Coffee Can With Lid
-Thin Paint
-One Golf Ball For Each Color of Paint
-Plastic Spoons
-Paper Cut To Fit Inside Of Can
-Two Children
What You Do:
 1. Place golf balls in a small bowl of paint.
 2. Each child uses a spoon to take out a golf ball from their color choice of paint (two colors work best, one for each child) and transfer them into a coffee can lined with art paper.
 3. Place lid on the can.
 4. Have children sit on the floor and roll the can back and forth for as long as they wish.
 5. When they are done, open the lid, pour the balls back into the paint and pull out the painting that they created together.
 6. To label the paper, do so on the back side before children start.
 7. To ensure that each child has a 'copy' to take home, have each pair make two.
 8. This is a wonderful photo opportunity, and if displaying the photos, have each pair make three creations!
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Filling large arrays with zeroes quickly in C++
Travis Downs reports that some C++ compilers have trouble filling up arrays with values at high speed. Typically, to fill an array with some value, C++ programmers invoke the std::fill. We might assume that for a task as simple as filling an array with zeroes, the C++ standard library would provide the absolute best performance. However, with GNU GCC compilers, that is not the case.
The following line of C++ code gets compiled as a loop that fills each individual byte with zeroes when applying the conventional -O2 optimization flag.
std::fill(p, p + n, 0);
When the array is large, it can become inefficient compared to a highly efficient implementation like the C function like memset.
memset(p, 0, n);
Travis reports that the difference is a factor of thirty. He also explains how to fix the C++ so that it is as fast as the memset function.
What about very large arrays? What if you need to write zeroes all over a 2GB array?
memset 30 GB/s
std::fill 1.7 GB/s
Roughly speaking, the memset function is 15 times faster than std::fill in my test. This demonstrates that even if you are working with large volumes of data, you can be easily limited by your inefficient implementations. You are not automatically limited by your memory bandwidth. In fact, std::fill in this instance cannot even keep up with a good network adaptor or a fast disk. We routinely parse JSON data, and write out DOM trees, at speeds far higher than 1.7 GB/s.
Another lesson I would derive from this example is that writing your code in idiomatic C++ is not sufficient to guarantee good performance. There is a lot of engineering involved in making C++ fast, and though it often works out magically, it can fail too.
My source code is available.
Published by
Daniel Lemire
25 thoughts on "Filling large arrays with zeroes quickly in C++"
 1. I think that the rationale is part of the GNU GCC documentation, it states that -O2 "performs nearly all supported optimizations that do not involve a space-speed tradeoff". That is, the -O3 flag may grow the binary size to achieve better speed. And, of course, -O3 may fail to deliver better speed because of the trade-offs involved.
 I think that if -O3 delivered consistently better performance, it would be the new default at release time, but I don't think it works this way.
 1. Disclaimer: this is on clang, so maybe it doesn't matter.
 Anyway, looking at the code I noticed that the memory is set to 1 only once and then re-zeroed in all subsequent benchmarks… so perhaps only the first benchmark (std::fill) is doing something.
 So I swapped around the memset bench and the std::fill bench and this came out:
 page count: 32, volume:0.125 MB
 memset(p,0,n) : 9.2219 GB/s
 std::fill(p, p + n, '\0') : 39.1376 GB/s
 std::fill(p, p + n, 0) : 39.3015 GB/s
 memset(p,0,n) : 39.3268 GB/s
 std::fill(p, p + n, '\0') : 39.5562 GB/s
 std::fill(p, p + n, 0) : 39.6719 GB/s
 memset(p,0,n) : 39.4922 GB/s
 std::fill(p, p + n, '\0') : 39.8012 GB/s
 std::fill(p, p + n, 0) : 39.8272 GB/s
 and suddenly, memset is the bad one!
 In fact the first bench is the slowest almost every time on my machine.
 This is on MacOS 16 + clang… maybe this happens because once a page is zeroed, it's remapped to the read-only zero-page and subsequent 0-writes don't do anything?
 I changed the code to give each benchmark its own memory area, and that way I get about the same speed for all 3 methods, +/- some (pretty big) random fluctuations on all 3:
 char* src = new char[i*3];
 memset(src, 1, i * 3);
 char* p = src;
 bench2(p, i);
 p += i;
 bench1(p, i);
 p += i;
 bench(p, i);
 std::cout << std::endl;
 delete[] src;
 … although the very first bench*() call (no matter which) is still at 9 gb/s. No idea why 🙂
 1. This is a bug in GNU C++ library std::fill/std::fill_n. Using the argument of the exact correct type for the fill value fixes the bug and makes it use memset.
 On one other hand you have memset, which you need to specify the correct size in bytes, despite it taking an int fill value (specifying wrong size for memset is a common bug in stackoverflow questions).
 1. Yes, you can get around the performance issue, as Travis explains. Whether it is a bug is debatable: it has been around forever and it is standard compliant.
 But the larger point is that nothing at all in the C++ standard guarantees that you will get the best possible performance with std::fill. This is just one example of many where using the idiomatic approach will fail you.
 Please check my previous posts where I show that just about the worse possible way to allocate and initialize memory is via "new()", at least in GNU GCC.
 My argument is not that you should forgo the idiomatic way, or drop C++ in favor of C. My argument is laid out in my post. (Last paragraph.)
 1. Well, you are intentionally measuring performance of code hitting the library bug and yet you are not using -O3 optimization, despite targeting for top performance. It is hard to call such an approach scientifically sound, IMHO.
 1. The first link in the blog post is to Travis' blog post, where he describes the issue in details. I have the following line "He also explains how to fix the C++ so that it is as fast as the memset function."
 Do you disagree with the point I am making? The point is the following: "writing your code in idiomatic C++ is not sufficient to guarantee good performance".
 If you disagree, I have many more arguments. In fact, I have literally hundreds of blog posts on this topic over 15 years.
 This happens all the time. It is actually kind of difficult to get bare metal performance out of C++ systematically. It is comparatively quite easy to write idiomatic C++.
 2. You are trying to write idiomatic code, but you made an intentional mistake in it by using a wrong type, which resulted in the sub-optimal code path. And to add insult to injury you pessimize it with -O2 instead of -O3.
 So, you have idiomatically looking code with a subtle bug in it and that's what you benchmark.
 1. Please be clear, Maxim, about your disagreement. Here is my statement: "writing your code in idiomatic C++ is not sufficient to guarantee good performance".
 Do you agree or do you disagree?
 1. "Writing your code in idiomatic C++ is not sufficient to guarantee good performance". – I agree, just as well as I agree with "writing your code in non-idiomatic C++ is not sufficient to guarantee good performance either".
 In both cases the code must be bug free, however subtle the bugs are.
 May be you are trying to say that passing literal 0 into memset doesn't create a subtle performance bug, unlike with std::fill, and that can conditionally be true. People compiling with -O3 (like me) wouldn't experience that bug either.
 I value information from most of your posts, nevertheless.
 1. Note compilers would become much better quickly if people take the
 time to report optimization issues rather than just complaining about
 them in various blogs…
 I am not exactly sure how it works regarding GNU GCC. For example, I know how to double the speed of the random shuffle and I sent a patch. I'm looking forward to see whether it makes it.
 1. Call it what you like! It is interesting to point out that various C++ constructs can have very different performance characteristics across compilers and even different versions of the same compiler.
 However these are examples of optimization inefficiencies which should not happen and are easily fixable in compilers – if only we hear about them!
 GCC has a bugzilla where you can report bugs or optimization issues. Contributing patches to GCC requires a copyright assignment, and to get your patches accepted you may need to post them repeatedly if people are busy and they don't get any attention…
 1. My experience across a few compiler and similar projects is that most reported issues are either ignored, or initially discussed then subsequently ignored.
 Even compiler developers admit that the best way to get something fixed is to complain about it in a visible way (not saying Daniel is doing this), at which point it gets fixed.
 1. Well the best way to get things done in an open source project is to be extremely proactive, so ask questions, file bugs


How to build a Windows PE [Vista] CD/DVD that contains Ghost32.exe and then join a client machine to a Ghost Cast Server session to create or restore an image file.
Article:TECH109718 | Created: 2007-01-06 | Updated: 2013-10-22 | Article URL
Article Type
Technical Solution
It's been explained to you that imaging operations on server operating systems and computers that use a hardware RAID array must occur from a 32-bit Windows PE environment where the network interface card (NIC) drivers and mass storage controller drivers are included in that environment. You need to know how to build this Windows PE disk so that you can complete your imaging with the Ghost Cast Server.
The default 16-bit DOS environment that is used on regular Ghost Boot Disks does not correctly interpret hardware RAID arrays or server operating systems.
Symantec Technical Support for Windows PE is limited to the use and troubleshooting of Ghost. Support is not offered for configuring or troubleshooting Windows PE operations outside
the functionality of Ghost. The information below is provided "as is" and questions about Windows PE or the process used to create a Windows PE disk should be directed to Microsoft.
1. Download the Windows Automated Installation Kit (WAIK) located at the following URL:
2. Once you have WAIK download, burn the image file to DVD using 3rd party burning software or extract the contents of the image file to a folder.
3. The following components should be installed on a Windows XPSP2, Windows 2003 SP1, or Windows Vista computer. These components are all available on the WAIK DVD burned in step 2.
a..NET Framework Setup
b. MSXML 6.0 Setup
c. Windows AIK Setup (install last).
4. Click Start > All Programs > Microsoft Windows AIK > Windows PE Tools Command Prompt
5. Type the following commands at the command prompt:
a. copype.cmd x86 c:\winpe_x86
b. imagex /mountrw c:\winpe_x86\winpe.wim 1 c:\winpe_x86\mount
Next, you'll want to copy ghost32.exe, NIC drivers, and Mass Storage Controller Drivers to the PE disk. The NIC drivers and Mass Storage Controller drivers need to be Vista drivers.
c. copy "C:\Program Files\Symantec\Ghost\Ghost32.exe" c:\winpe_x86\mount\windows
d. copy "[NIC driver location]" c:\winpe_x86\mount\windows (Vista Drivers only)
e. copy "[Mass Storage Driver Location]" c:\winpe_x86\mount\windows (Vista Drivers only)
f. peimg /prep c:\winpe_x86\mount\windows
Type Yes to continue
g. imagex /unmount c:\winpe_x86\mount /commit
h. copy c:\winpe_x86\winpe.wim c:\winpe_x86\ISO\sources\boot.wim
Type Yes to overwrite
j. Burn the ISO located at c:\winpe_x86 to CD/DVD.
6. Boot your client machine with the new PE disk you built
7. When the PE environment is fully loaded, you'll see a command prompt. At the command prompt, type ghost32.exe and press [enter]
8. At this point, Ghost will open and you can perform imaging as you normally would:
a. Click GhostCast
b. Select Unicast/Multicast/Directed Broadcast
c. Type the name of the GhostCast Session to join
d. Click OK
e. Select the source/destination drive and Click OK
f. If you're creating an image, choose the level of compression to use. If you're restoring an image, you won't see compression options.
g. Click Yes when asked, "Proceed with Image File Creation?"
Note: To automate the opening of Ghost32.exe when you boot into the Windows PE environment, modify the startnet.cmd file prior to taking step 5E. You can find the startnet.bat file in c:\winpe_x86\mount\windows\system32\startnet.cmd. Underneath the winpeinit entry, enter the following command line and resave the file:
Walkthrough: Create a Custom Windows PE Image
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A member of the Chrysanthemum family, feverfew (Chrysanthemum parthenium) is sometimes called Wild Chamomile, as the two plants are very similar. Feverfew is a perennial plant and hardy in zones 3 to 9. It is sometimes grown for its leaves, which are used in teas to reduce fevers and anxiety. This plant grows up to 2 feet tall and has small, daisy-like flowers.
Planting and Care of Feverfew
Choose a site with full sun (afternoon shade in southern areas) and well-drained, fertile soil.
If planting from seeds, plant directly into the ground in the spring. With your trowel, smooth out the soil and disperse the seeds evenly. Cover with a thin layer of soil and water. Water the seedlings regularly until well-established.
In the spring, after the last frost, you can plant container-grown feverfew. Dig a hole roughly twice the size of the plant's base and place it in the hole. Fill back with soil, making sure there aren't any air pockets. Water generously. Plants should be spaced 1 to 2 feet apart.
During the summer months, deadhead any spent flowers by pinching them off the stem with your fingers. Feverfew will self-sow, so leaving a few flowers behind in the fall will allow them to go seed and you'll have new plants come spring.
To protect your feverfew over the winter months, place mulch over and around the plant in the fall. This can be wood chips, grass clippings or even pine branches.


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Effects of interactions between humans and domesticated animals
AbstractHumans have many kinds of relationships with domesticated animals. To maintain relationships interactions are needed. Interactions with animals may be beneficial for humans but may also be risky. Scientific literature on effects of humanâ€"animal relationships and interactions in a workplace, health-care and residential context has been reviewed to develop ideas about the effects farm animals can have on humans. Although there are quite a few studies, the variety of methods, the complexity of the material, differences in research goals and variable quality of the studies make that no general conclusions about the effect of animals on humans can be drawn. Nevertheless, when interactions with animals affect people, it may be expected that this will be similar for pets and farm animals
Op dit werk is een Creative Commons Licentie van toepassing.


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Donald Cockcroft, a Professor in the Division of Respirology, Critical Care and Sleep Medicine in the College of Medicine, has been elected a Fellow of the Canadian Academy of Health Sciences. Dr. Cockcroft has made several significant contributions to asthma research and helped develop one of the earliest sets of asthma guidelines. He developed a method for methacholine challenge that is widely used around the world to assess airway responsiveness and diagnose asthma. His research was also important in the recognition of asthma as an inflammatory disease. His work with the AllerGen Network of Centres of Excellence Clinical Investigator Collaborative has leveraged industry funding for clinical research, standardized testing protocols for potential asthma drugs, and helped identify potentially effective treatments at an early stage of development. Dr. Cockcroft is a former president of the Saskatchewan Thoracic Society and the Canadian Thoracic Society, a Fellow of the American Academy of Allergy, Asthma and Immunology, the American College of Chest Physicians, and the American College of Allergy, Asthma and Immunology. In 2006, he was awarded a Career Achievement Award in Clinical Health Research from the Saskatchewan Health Research Foundation.
Dr. Donald Cockcroft is a renowned and highly cited expert in asthma who has made significant contributions to respiratory medicine. His pioneering achievements have played a key role in our understanding of asthma and have impacted asthma diagnosis and management. He has been heavily involved in developing asthma guidelines with organizations such as the Canadian Thoracic Society. He is one of the founders of the AllerGen Network of Centres of Excellence Clinical Investigator Collaborative, a world-leading initiative to identify and accelerate development of potential new asthma medications. He also developed the widely used Cockcroft-Gault formula for predicting creatinine clearance.


text: Across the past decade, increasing water demand has been identified in Sri Lanka. The National Water Supply and Drainage Board is responsible for supplying potable drinking water to Sri Lanka people. There having various rural, urban water supply schemes are operated under that. Apart from that, the private sector water supply systems are also there. Thus, this paper focuses on investigating Sri Lankan drinking water treatment's operation procedure and optimizing its process by exemplifying the Kalu river basin as a case study.


text:
Garden Restoration Project
We started this garden in August 2020. This project was to bring a garden that had been overrun with periwinkle (an invasive plant) back to life. We removed the periwinkle, created a barrier to prevent re-entry, added soil, and added hearty plants that could compete with the periwinkle. This garden included plants such as Black-Eyed Susans, Wild Bergamot, Mountain Mint, Vervain, and White Heath Aster. More progress photos to come in Spring 2021.
Before: Garden was filled with periwinkle and other stray plants
During: We removed the periwinkle and added soil
After: A variety of native plants to attract different pollinators
After: Black-Eyed Susans, Wild Bergamot, White Heath Aster, Vervain, Mountain Mint


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Key information: This small and elegant heron comes to Cyprus in small numbers to spend the winter. During spring and autumn, flocks of ten or more Little Egrets can be seen flying along the coasts, especially at Akamas Peninsula. When seen in spring, the adult birds have two or three long straight plumes (long feathers) growing from the back of their head. It is more slender than the Cattle Egret.
Length: 55 – 65 cm
Habitat: Wetlands, coastal areas
When they can be seen: Autumn, winter, spring
What they eat: Fish and other aquatic organisms, small reptiles
In Cyprus: Can be seen at wetlands such as Oroklini Lake, Akrotiri Marsh and Athalassa Park
Status: Passage migrant, winter visitor
Illustration by Paschalis Dougalis


Comparing multiple rows insert vs single row insert with three data load methods
When faced with having to import data directly into SQL Server from a client application, you have a number of choices. You can use bulk copy (bcp), insert the data with a series of INSERT statements, use a parameterized prepared statement from the client, or call a stored procedure with the data passed as a parameter. From that stored procedure, you'll probably want to insert the data into a table by using statements that insert several rows at a time.
I wanted to find the best way to import data into SQL Server, so I decided to experiment with a couple of different data load methods to compare the results. I had to address some questions to make sure the experiments would produce the quickest times. What's the best way to use statements that insert several rows at a time, and how many rows should I try to pass at a time? For performance, should they be wrapped in explicit transactions or should I use auto-commit? How do I pass the parameters to the stored procedure? Which is the best, and fastest, approach?
In this article I'll describe how I experimented and adjusted my methods to find the best way to insert a million of rows of data into SQL Server.
The background
The more data you're dealing with, the more important it is to find the quickest way to import large quantities of data.
Last year, I participated in an Extract, Transform, Load (ETL) project. My task was to load data from a large comma-delimited file. This file had 220,000 rows, each of which had 840 delimited values and it had to be turned into 70 million rows for a target table. In all, about 184 million rows had to be processed. This file type was the largest in the project. The ETL project task was to create a payment projection for a period of 70 to 100 years. A line in the file consisted of an object identifier and its payments for decades.
The sizes of other file types were 30 times smaller, and we successfully used Informatica PowerCenter 9 to parse, validate, transform, and load the files into a staging table in SQL Server. Once the files were loaded, we were able to run sophisticated queries to calculate statistics and then load them into relational tables.
After developing a prototype based on Informatica, we decided to use PowerCenter 9 for workflow control and supplemented this with SQL Server stored procedures for parsing, validating and inserting the data. We wanted to reduce the time spent on the loading process (16 hours), and by using stored procedures, we could now calculate some statistics with incrementing counters in the loop. Also, we were able to implement a business rule which stated that the number of values in a file line was a variable between 840 (12 months * 70 years) and 1200 (12 months * 100 years). The first prototype powered by Informatica had 840 fixed mappings (Informatica objects). By using stored procedures with a parameter, we were able to insert variable numbers of values from each row as required.
First steps
I started evolving my solution by loading data into a staging table that had two columns: row number and delimited text. The target table had a heap structure with seven columns without indexes or constraints. I then created a procedure that built a loop that parsed the data and inserted it into the target table. The following pseudo code describes it.
while … begin
get parsed data into variables _USER_,_USER_…_USER_
insert into TargetTable(c1,c2,..c7) values(_USER_,_USER_…_USER_);
for explicit transaction control, each 10,000 inserts were wrapped into transaction
This first approach to the problem doubled the speed of the prototype powered by Informatica, but we were itching to make it fast, so we set up parallel loading. We were going to split the staging data into two parts and process each part in parallel. We had enough server resources for two parallel processes, so we just needed to add two parameters in a procedure to assign the starting row and the ending row of the staging table, and implement parallel calls of procedures in the Informatica workflow.
Before implementing parallel loading we wanted to find a simple way to speed up the INSERT performance of our procedure, something small that made a big difference – multiple rows insert. Instead of calling a single row insert, I sent five rows in the one statement. This change reduced execution time by 40%, which meant hours in my case. The changed pseudo code was:
while … begin
get parsed data into variables _USER_,_USER_, _USER_,…_USER_, _USER_,
insert into TargetTable(c1,c2,..,c7)
for explicit transaction control, every 2000 inserts were wrapped into a transaction
After implementing multiple rows insert and parallelization, the full time of loading and processing the file was reduced to two hours and forty-five minutes. The total time included all the ETL operations, loading a staging table, statistics calculation and index creation. We engaged two parallel processes and it consumed about 60% of the server resources, so users could still load files of other types at the same time.
I was intrigued by the multiple rows insert method of loading data, and wondered whether I could have improved the performance by doing it a different way. Later, I had time to investigate the pros and cons of this method and compared multiple rows insert with other data load methods: the single row insert, bulk copy performance (bcp) and procedure with TVP (table value parameter).
Testing environment description
To compare data-load methods, I chose a common example of a client program loading data. The client applications were written with C#.Net 4. The database platform was SQL Server 2008 R2. The database and the client applications were placed on the same personal computer (Lenovo ThinkCentre M90, Windows XP).
Comparing single row insert verses multiple rows insert
The feature, Inserting Multiple Rows Using a Single INSERT...SELECT VALUES statement, appeared in MS SQL Server 2008.
An example of inserting multiple rows:
Insert into t2(c1,c2) values(1,'A'),(2,'B'),(3,'C');
which is equivalent to
insert into t2(c1,c2) select 1,'A' union all select 2,'B' union all select 3,'C';
which was valid in previous versions.
To investigate the performance difference between the single row insert and multiple rows insert, I created a program which dynamically formed an INSERT statement for a given number of rows. I ran a set of tests wrapping 1, 2,5, 10, 25, 50, 100, 200, 500, 1000 rows in a single INSERT statement, trying to determine the number of rows in one INSERT...SELECT VALUES statement that should be used to get the best performance.
The test program loaded one million rows into the target table using a prepared parameterized INSERT statement and explicit transaction control. Every 10,000 statements were wrapped in a transaction.
The target table had the following structure:
The test results are presented in Image 1 and Image 2.
Image 1
Image 2
In the experiment where the only variable was the number of rows per INSERT statement (Image 1), we see that the best performing number of rows was 25 per INSERT statement, which loaded one million rows in 9 seconds. In contrast, single row insert took 57 seconds to load one million rows.
Number of columns and multiple rows insert
To investigate the influence the number of columns has on performance, I made an additional set of tests for tables with seven, ten and 23 columns. I ran tests wrapping one, two, five, ten, 25, 50, and 100 rows in a single insert statement (abandoning the 500 and 1000 row tests). During every test, I loaded a million rows into a table. I varied the number of columns while keeping the length in bytes of the rows constant.
Tables had the structure:
Table Name
Column Number
C1 int, C2 varchar(10)
U1 uniqueidentifier, U2 uniqueidentifier, I1 int, I2 int, d1 datetime, I3 int, I4 int
t7 structure plus 3 varchar(200) columns
t7 structure plus 15 varchar(40)
Table 1
The test results are presented in Image 3 and Image 4.
Image 3
Image 4
As you can see, the difference between the single row insert and multiple rows insert response times decreased as the number of columns increased. With 23 columns, the best result shown by multiple rows insert was almost the same as the single row insert. The speed difference is shown on Image 5.
Speed difference is calculated by dividing the single row insert results (57 seconds in the case of a two-column table) by the multiple rows result (9 seconds in the case of a two-column table). In this example, the multiple rows insert operation was more than 6 times faster than the single row insert operation.
See Table 2 for the full results.
Image 5
Image 6
In the case with the 23 columns table, inserting only 2 rows in a single statement brought the most performance improvement. No other performance improvement was evident.
Number of columns in a table
Speed difference (single row results /multiple rows result)
the single row results in seconds
multiple rows insert results in seconds
Number of rows in an insert
Table 2
It looks like the number of columns in a table was a limitation


text:
Assessing knowledge, attitudes and practices of boys and young men with regard to the prevention of pregnancy and HIV infection.
This paper focuses on boys and young men's attitudes, knowledge and practices with regard to pregnancy and HIV infection. The objective of the study is to ascertain how boys and young men perceive the risks of pregnancy and HIV infection. The study further investigates the strategies which the sexually active respondents considered as appropriate, practical and effective in coping with these risks. The study was based on the secondary data which was extracted from the transitions to adulthood survey conducted in KwaZulu Natal during 2001. The analysis was restricted to young men aged 14 to 24 years. The major findings from the study revealed that young men did not perceive themselves at risk of HIV infection. Overall, respondents were fairly knowledgeable about HIV/AIDS and knew where to access condoms, how HIV is contracted or transmitted etc. Findings also indicated that many respondents regarded pregnancy as a matter of great concern. Many respondents perceived pregnancy as highly problematic and were concerned to protect themselves against this risk. The major finding for this study revealed that the majority of sexually active young men used condoms for preventing both pregnancy and HIV/AIDS; while some also used various contraceptive methods to prevent pregnancy. A major factor promoting consistent condom use was the perception of pregnancy as highly problematic.


text:
Microsoft Selfie App with Artificial Intelligence
Microsoft Selfie app finally makes its way to the Android platform. With the purpose of improving the quality of images using machine learning algorithms, the Microsoft Selfie app is now available for Android users. Microsoft launched the Selfie app for Android users almost an year after the iOS version was released. This app claims to improve the selfies by using machine vision technology. This Selfie app stands out from the other photography apps by processing the captured images through machine learning algorithms.
When you open the app, two options are presented. One is to select a photo from the gallery and the second way is to take a new photo. You will find the filters similar to the ones found in Instagram such as XPro, 1965 and others.
Microsoft Selfie intelligently evaluates age, gender, skin tone, lighting and many other variables to transform average photos into enhanced, natural photos in seconds.
Powerful Image Enhancer
The timing of the app will be greatly appreciated as a recent report states that 9 out of 10 smartphones around the world run Android Operating System. Talking about the filters, the app includes a vast collection and the default enhancer is the unique selling point of this app. The enhancer uses machine vision technology to improve the selfies you captured. Of course, you can manually change filters, control the impact of filters and more.
This app comes with the ability to apply automatic enhancements within seconds. It applies edits like skin smoothing, brightening and more to improve selfies. All those who love clicking selfies are sure to find Microsoft Selfie app useful and easy to use.
Some useful insights about Microsoft Selfie App:
Ratings: 3.6 out of 5 stars
Publisher: Microsoft Corporation
Requires Android: 4.1 and up
Download Now for Android
In addition, Microsoft also introduces a web-based interface for the Selfie app. This implies that PC users can add one-touch effects to the pictures by uploading picture to the Selfie cafe and get instant results.
So, what are your thoughts about Microsoft Selfie app? Do you like its features? Let us know your thoughts in the comments. Do you think this Selfie app really stands out from the crowd?


text:
[Tutor] adding together strings
Fri, 7 Apr 2000 08:02:02 -0700
> Hello python tutors,
> I hope you can help me with a little problem. (I am a beginner).
> I am working on a program which will access some files in a folder on the
> desktop without me having to type in the whole address every time.
> Here is what I would like to do.
> filename = raw_input("type name of file ")
> filename="C:\windows\desktop\targetfolder\" + filename
> When I try this kind of thing at the command line it works fine, but when I
> put it into a module it tells me that "filename" is an "invalid token"
I'm suprised it works at the command line - you have a problem here with
Python's rules for escaping special characters in strings. The primary
problem is that the \ before the final " on the second line escapes the ",
so that Python thinks of it as being a quote within the string rather than
the quote that ends the string.
Similarly, although you may not have noticed it, the \t in \targetfolder
gets turned into a tab.
You can fix this immediately by something like:
filename = raw_input("type name of file ")
filename="C:\\windows\\desktop\\targetfolder\\" + filename
In other words, in regular strings in Python, whenevr you want a "\" you
should type a "\\".
A better solution to your problem, because it will be breeding good habits
for the future, is to use the os.path module's functions, particularly
os.path.join. This will help if you ever have to work with unix or mac
systems in python; and means you don't have to work with all those double
backslashes on your system.
Hope this helps.


text:
input-file - File input
input-file: [] input-file: |[cmd]
file The file events are read from. The standard input is used by default. cmd If the file name starts with a |, it is interpreted as a command which is run. The process stdout is used as input file for input-file.


text:
Sometimes businesses need the transfer of ownership; be it LLP of Private Limited Company. There are many reasons for this. There may be statutory requirements because of which one may need to transfer the ownership. For example, if it is not possible to be the owner of more than one business enterprise at the same time.
The willful transfer of ownership is also possible. Meaning, if the owners desire to transfer the ownership, it can be done. Both the LLP and PLC have got a different due procedure that needs to be followed to transfer the ownership.
Transferring of ownership of an LLP
Formation of an LLP takes place with the combination of partners and designated partners. Under the law, it is required to have a minimum of two designated partners. The transfer of ownership will require the agreement to add or remove a partner in LLP and thereby by substituting the current designated partners for the new ones. Once appointed, a partner or a designated partner can be changed, removed or appointed.
Here is the procedure to add or remove partner in LLP:
1. Applying for a digital signature certificate
It is essential for verifying an individual's identity and for signing the form digitally. Submit the following documents for obtaining such a certificate:
- PAN Card of the applicant
- Address proof of the applicant
- Photo of the applicant
- Email Id of the applicant
- Phone number
2. Apply for DIN Number
In the form named DIR-3, the Director Identification Number of the Director will be applied along with the address proof and the identity proof of the applicant.
- After this, all the existing partners of the LLP will call a meeting and pass a resolution to add a designated partner in an LLP.
- The supplementary LLP agreement must be drafted to add a new partner.
- The acceptance of the incoming partner is necessary for writing.
- Filing of Form-4 within 30 days of the appointment is essential.
- After that, filling of form no-3 is essential along with the supplementary and the original LLP agreement within 30 days of entering into a supplementary agreement.
- After this, the name of such new partners reflects and will be on the website in the Ministry of Corporate Affairs.
For a private limited company
For transfer0 of ownership of the company, one has to transfer the shares of the said company or even add or remove a director in the company. Preference is given to the existing shareholders and then to the outsiders.
Steps to transfer Shares of a Private Limited Company
Step1: Going through the articles of association of the company to check that they do not contain any restriction.
Step 2: Obtain the share transfer deed in the prescribed format.
Step 3: Executing the share transfer agreement duly signed by the Transferor and Transferee.
Step4: Stamping of the share transfer agreement is necessary.
Step4: Have a witness sign on the share transfer agreement with his/her name and address.
Step5: Attaching the share certificate with the transfer agreement and delivering the same to the Company.
Step6: Company will a resolution and issue
A comparative outlook of the transfer of ownership between LLP and PLC reveals some essential steps. Moreover, these steps are very necessary to transfer the ownership of either the PLC or the LLP. We can conclude that both the LLP and PLC involve some essential due process. However, it is clear from this study that the transfer of ownership in LLP is a somewhat tedious task in comparison with PLC, many times it involves an additional step of the addition of designated partners.
Furthermore, in LLP, filing of different forms is necessary, unlike in the case of the PLC. Hence, we can conclude that both the processes are different but have the same objective. Both are unique in their way.


text: 1. Scope of application: fetal heart rate measurement 2. If not used for a long time, please remove the battery 3. This instrument is a check tool for fetal heart rate and cannot replace the fetal monitoring function. 4. The length of the line cannot exceed 1.5 meters. 5. The life of the instrument is 5 years. 6. Cannot be placed together with instruments with strong electromagnetic interference.


text:
Article: A lysorophid amphibian from the Coal Measures of northern England
A description is given of the presacral vertebrae and ribs of a lysorophid amphibian from the Middle Coal Measures (Westphalian B) of Northumberland. The specimen is the earliest lysorophid yet described and is the first certainly identifiable member of the group to be recorded from any horizon outside North America. An isolated presacral vertebra from an unknown Coal Measures horizon at Low Moor, West Yorkshire, may represent additional evidence of lysorophids in the British Carboniferous. Lysorophids appear to have been present in both lacustrine and coal swamp pool environments in the Upper Carboniferous as well as surviving in'red bed' environments in the Lower Permian in North America.


text: The finite-element method (FEM) was applied to analyze the vibration (inherent and the harmonic frequencies) of wine glasses (glass harp) as a musical instrument. FEM analysis for this problem was proven appropriate by confirming the coincidence between the experimental and analyzed inherent frequencies for several glass cups with different shapes. When using wine glasses as musical instruments, minute arrangement of the pitch is necessary. Even today, this is done by filling a certain quantity of water in the wine glasses. This method, however, is very troublesome because each time, just before a performance, a check has to be made to confirm that the correct water quantity had been filled in every vessel. Compounding the problem, the pitch sometimes changes during the performance because of water evaporation. In place of this water-filling method, minute pitch changes have been achieved by locally shaving a bottom part of each vessel. The pitch is found to decrease in proportion to the shaved glass quantity. The relationship between the shaved glass quantity and the changed pitch has been clarified experimentally and analytically through FEM analysis. With this procedure, the desired pitch can be obtained.


text:
With the method of application of fuzzy mathematics comprehensive assessment,the growth status and ornamental characteristics of major urban greening trees in Jingzhou City was evaluated. And the comprehensive assessment value of each urban greening tree species were calculated. According to the law of degree difference, the major urban greening trees in Jingzhou City were classed into four types by the rank of their comprehensive assessment value,which were optimum trees,adaptive ones,available ones and un...
fuzzy mathematics comprehensive assessment
selection of tree species


Belmonte surname meaning, origin - spanish surname Belmonte
The meaning of the surname Belmonte is: From various place names in Italy and Spain meaning "beautiful mountain".
The surname Belmonte is present in the lists: Surnames, Italian surnames, Spanish surnames, Surnames start with letter B.
Number for the surname Belmonte
The Number of the surname five (5) symbolizes an independent person, filled with the desire for freedom. They are skeptical of the opinions of others, value their personal life experience most of all, and often rely on intuition. The surnameBelmonte means a tendency to take risks and even adventures, so they often experience both success and failure.
The Number five (5) for the surname Belmonte means increased sexuality. They have all the thoughts about sex, they are completely immersed in experiences and fantasies on this topic. They may engage in sexual relations at the first meeting, with strangers, ignoring all security measures. On the other hand, people with the surname Belmonte treat sex as an art, and it's hard to find more sophisticated lovers. They are prone to infidelity, as they strive for everything new, unknown and exotic.
Stones of the number 5 for the surname Belmonte: sapphire, lapis lazuli, turquoise, garnet-almandine, pyrope, obsidian, agate, diamond, ruby, Jasper, emerald, tiger's eye, rock crystal, pyrite, onyx, jet.
Planet number 5: Mercury.
Zodiac Signs number 5: Gemini, Aquarius.
More: number of the surname Belmonte
Meaning of letters in the surname Belmonte
Compatible with the surname Belmonte spanish surnames
Acosta Spanish surnames, Aquino Spanish surnames, Benitez Spanish surnames, Busto Spanish surnames, Cabello Spanish surnames, Castilla Spanish surnames, Chavarria Spanish surnames, Contreras Spanish surnames, Cruz Spanish surnames, Cuellar Spanish surnames, Del rio Spanish surnames, De santiago Spanish surnames, Echevarria Spanish surnames, Esparza Spanish surnames, Estrada Spanish surnames, Gallego Spanish surnames, Juarez Spanish surnames, Matos Spanish surnames, Pantoja Spanish surnames, Paredes Spanish surnames...
Also check the compatibility of other surnames with the surname Belmonte.
Famous people with the surname Belmonte
 1. Alejandro Valverde
 Alejandro Valverde Belmonte (born 25 April 1980) is a Spanish road racing cyclist, who currently rides for UCI WorldTeam Movistar Team. Valverde's biggest...
 2. Belmonte, Bahia
 Belmonte is a municipality (município) in the Brazilian state of Bahia. It is located at 15º51'47" S, 38º52'58" W. It is 8 metres above sea level. In 2020...
 3. Mireia Belmonte
 Mireia Belmonte García (born 10 November 1990) is a Spanish Olympic, world, and European champion swimmer. She is the first female Olympic champion in...
 4. USS Helios (ARB-12)
 until leased to the government of Brazil on 19 January 1962 and renamed Belmonte (G-24). The vessel was sold outright to Brazil via the Security Assistance...
 5. San Colombano Belmonte
 San Colombano Belmonte is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 35 kilometres (22 mi)...
 6. Belmonte de Gracián
 Belmonte de Gracián (Aragonese: Belmón de Grazián) is a village near Calatayud in the province of Zaragoza in Aragon, Spain. It is fortified village which...
 7. Belmonte Mezzagno
 Belmonte Mezzagno (Sicilian: Bellumunti but more properly U Mizzagnu in the local version of the Sicilian language) is a comune (municipality) in the Metropolitan...
 8. Belmonte de San José
 Belmonte de San José (Spanish: [belˈmonte ðe saŋ xoˈse]) or Bellmunt de Mesquí (Catalan: [ˌbeʎˈmun də məsˈki]) is a municipality located in the province...
 9. Belmonte, Santa Catarina
 Belmonte is a municipality (município), in the Brazilian state of Santa Catarina. The name of the mayor is Genesio Bressain. It is located at 26º50'29"...
 10. Estadio Carlos Belmonte
 Estadio Carlos Belmonte is a multi-purpose stadium in Albacete, Spain. It is used mostly for football matches and is the home ground of Albacete Balompié...


Regular Expressions: Positive and Negative Lookahead austin
Tell us what's happening:
I'm looking at the example given in the Positive and Negative Lookahead Lesson. Here it is:
let password = "abc123";
checkPass.test(password); // Returns true
However, if password = "abcd123" it still return as true, even though the password has more than 6 characters. Why is that? Shouldn't this return as false if there are more than 6 characters?
Also, I don't understand how the lookahead works when there is nothing in front of the (?=…) as given in this example. The other examples have something in front, as with q(?=u). How can you have a lookahead with nothing in front of the lookahead?
Your code so far
Your browser information:
Challenge: Positive and Negative Lookahead
Link to the challenge:
I'll translate this regex to English and see if you can spot the problem:
 1. Anywhere ahead of me there must be three to six _alphanumeric characters
 2. Anywhere ahead of me there must be a digit possibly preceded by any number of non-digit characters
DISCLAIMER: "Anywhere" is somewhat incorrect technically, but still OK to understand the behaviour.
Ok thank you that does help! It seems that this regex just checks to see if there are 3-6 alphanumeric characters in the string ("ahead of me"), but the string can still be more than 6 characters.
Exactly! There is no way lookaheads can test the maximum boundary. In order for this regex to work you need to unwrap the first lookahead and introduce boundaries ^...$:
const re = /^(?=.*\d)\w{3,6}$/;
re.test('abc123'); // true
re.test('abcd123'); // false
1 Like


text:
INCLINE VILLAGE, Nev. - Birds at Lake Tahoe are a lot like people.
Some are here year-round. Some are here just for the winter. And others get blown off course, unsure of how they got here at all.
And when birds find themselves in the unfamiliar environs of the Lake Tahoe Basin, people purposefully come here to see them.
Kirk Hardie, a biologist who teaches field ornithology at Sierra Nevada College and co-founder of the Tahoe Institute for Natural Science, spoke about the navigational follies of some species during a talk on winter birds last Tuesday at the UC Davis Tahoe Environmental Research Center.
A Long-tailed Duck, a black-and-white species with a propensity for diving, has been spotted at Lake Tahoe within the past two weeks, Hardie said. The duck breeds in the far north and should be along the coast for winter, according to The Cornell Lab of Ornithology. Hardie described the species as "well out" of its expected range.
How it got here isn't known, but the bird's presence has brought birders up from Sacramento in search of checking another species of their lifetime identification lists, Hardie said.
The duck is hard to spot because it tends to dwell well off shore, Hardie said. It's for good reason, as the duck is one of the deepest-diving of its kind, able to reach 200 feet deep in its search of food.
Birds deviate from their normal migration routes for numerous reasons Hardie said, including being an inexperienced juvenile, being blown off course by a storm or "being born with the wrong DNA" for the right migration. Some just get lost, the biologist said.
A Red-naped Sapsucker, a woodpecker with brilliant scarlet patches on its throat and head, was among the recent anomalies in the basin when it was spotted during an annual Christmas bird count in the Basin. A native of much Nevada and the Great Basin, the sapsucker was only slightly off course, Hardie said.
An American White Pelican was also noted among the species during the Christmas count, Hardie said. A visit from the pelican, one of the largest birds in North America, isn't completely out of the ordinary, according to the biologist, but their appearances can be a little random. The bird winters throughout much of Southern California.
Three-hundred and five species of birds have been sighted in the Lake Tahoe Basin. Sixty-five species are here year around. Anywhere from 150-200 species will be recorded in the Lake Tahoe Basin in a typical year, depending on environmental conditions, Hardie said.
About one-third of all North American bird species can be found at the lake at one point or another during the year, according to the biologist.


text:
- New Annex
- College A-Z
A. Jacob Odgaard
Professor Civil and Environmental Engineering
Faculty Research Engineer IIHR -- Hydroscience & Engineering
306 Stanley Hydraulics Laboratory
Joined the College of Engineering:
Ph.D., Civil Engineering, Technical University of Denmark, 1970
M.S., Civil Engineering, Technical University of Denmark, 1966
Special Fields of Knowledge:
Environmental fluid mechanics; hydraulic engineering; hydraulic structures; hydraulic modeling; river engineering; river mechanics.
Present Research Interests:
River meandering and channel stability; sediment management in rivers using Iowa Vanes and other structures; fish diversion structures; Hydroinformatics.
Active Scientific and Professional Society Memberships:
American Society of Engineering Education; International Association for Hydraulic Research; Sigma Xi; Chi Epsilon; Fellow, American Society of Civil Engineers.


text:
Guidecraft Beehive Lacing, Manipulative Preschool Toy for Kids
Sorry, this item is out of stock
The beehive lacing set combines a classic lacing activity while inspiring dramatic play. Set includes a solid rubber wood beehive with holes for the three bees on multi-colored lacing strings to lace through it. These manipulatives are easy for little hands to grasp and are for developing essential and cognitive skills including dexterity, hand-eye coordination, as well as visualization and process. Suggested age: 3+.
- Beehive lacing set encourages children to lace the colorful bee strings through the beehive block
- Includes beehive, and three bees on multi-colored strings, with bead Stoppers
- Various holes run through the chunky wooden beehive block to lace each bee in and out in various directions
- Strengthens fine-motor skills and sequencing capabilities
- Suggested age: 3+