required.
Wikipedia search
Best practices for the search box:
The search box must be available on all pages, not the homepage.
The search box must be long enough (such as Google's) for users to conveniently view and modify.
The search box must be intelligent. When searching, users can provide similar "common search terms" for their reference. In addition, when you enter a word, you can directly provide some "recommendation results" below 」. The search on the Apple official website is a goo
ArticleDirectory
Explanation:
Before impulse:
After Impulse:
Explanation:
Before impulse:
After Impulse:
Explanation:
Before impulse:
After Impulse:
Explanation:
Explanation:
Before
, search is meaningful. In particular, like Wikipedia, which has a large number of different areas of content of the site, "search" function is necessary.
Wikipedia's Search
Best Practices for the search box handy:
The search box has to be on all pages, not just the home page.
The search box is long enough (like Google's) to make it easy for users to view and modify.
Search box to be smart. Users can provide a similar "common search term" for reference when searching. In additio
The following describes severalOptimization Functions:
1. Extract Method (extraction function)
Explanation:
If you find that the code of a function is very long, it is very likely that this function has done a lot of things and you can find out whether there are comments in the function, comments are usually used to explain what the following code does. You can consider refining this code into an independent function.
The advantage of doing so is self-evident. It is the Single Responsibility Pri
We studied in the last class.
In a discrete finite dimensional space, any linear system is obtained by multiplying the matrix.
In a continuous infinite dimensional space, any linear system is obtained by integrating the integral of the kernel function.
Impulse response (Impulse response)cascaded Linear Systems (cascading linear system)If both $l$ and $m$ are linear, there is$w =mlv$In cont
.
B's displacement is negligible during the collision process.
2. Restoration coefficient of a Rigid-Body Model with local contact deformation
Fig 17.3
The restoration coefficient (experimental law) indicates the degree of deformation recovery of an object.
Full elastic collision (Object Deformation completely restored)
Elastic collision (Object Deformation cannot be completely restored. (Retain partial deformation)
Plastic collision (Object Deformation cannot be restored, that is, all deformat
Before reading this tutorial, please read: box2d tutorial 5-Collision Detection
Box2d tutorial 1-create a collision world
Box2d tutorial 2-mouse Interaction
Box2d tutorial 3-Rigid Body binding
Box2d tutorial 4-complex appearance of complex rigid bodies
When two objects collide, apart from checking whether they are in conflict, we often need to know how powerful the collision is. For example, Angry Birds decide whether to eliminate obstacles based on the collision intensity. This tutori
action time t is very small, the force F is very large, but let the product of the FT is constant, that is, the impulse is unchanged. So in the coordinate system with t-axis, F do ordinate, just like an area of the same rectangle, the bottom is squeezed narrow, height is crowded high, in mathematics it can be squeezed to infinity, but even if it is infinitely thin, infinitely high, but it still maintain an area of 1 unchanged (it has not been squeeze
several hundred milliseconds earlier than the conscious selective motion. In layman's terms, our subconscious has been active and made a decision 10 seconds before we knew it explicitly. For more information, see http://article.yeeyan.org/view/19154/6831. Our thoughts and desires are impulsive, not produced by free will, but determined 10 s ago. The subconscious has long determined everything, and the explicit consciousness seems to be just a notification. This discovery is frustrating,The free
The nature and physical significance of convolution (comprehensive understanding of convolution)The essence and physical meaning of convolutionHint: the understanding of convolution is divided into three parts 1) signal angle 2) mathematician understanding (layman) 3) relationship with polynomial1 sourcesConvolution is actually the birth of the impact function. The "Impact function" is a symbol proposed by Dirac to solve some of the physical phenomena of instantaneous action. The ancients said:
memory element in the static system.When validating the LTI system, Y (N-K) replaces only n in the X (n) n-k substitution of N. Y (n,k) is the transformation of the system itself to n in x (n)A loose, linear system. 0 inputs can produce 0 outputs. If an initial relaxation system does not meet the nonlinearity, it is a nonlinear systemTo be able to pass a linear test system is called a linear system, the linear system to meet the initial relaxation, if dissatisfied with the initial relaxation, s
(Original address: Wikipedia)Introduction:Pulse Neural Network spiking Neuralnetworks (Snns) is the third generation neural network model, the simulation neuron is closer to reality, besides, the influence of time information is considered. The idea is that neurons in a dynamic neural network are not activated in every iteration of the transmission (whereas in a typical multilayer perceptron network), but only when the membrane potential reaches a certain value. When a neuron is activated, it pr
1, the Limiting filter method (also known as the Program Judgment Filter method)A, Method:Based on experience, determine the maximum allowable deviation of two samples (set to a)Each time a new value is detected:This value is valid if the difference between this value and the last value is If the difference between this value and the last value is >a, this value is invalid, discard this value, replace the value with the last valueB, Advantages:Can effectively overcome the
1, the Limiting filter method (also known as the Program Judgment Filter method)
A, Method:
Based on experience, determine the maximum allowable deviation of two samples (set to a)
Each time a new value is detected:
This value is valid if the difference between this value and the last value is
If the difference between this value and the last value is >a, this value is invalid, discard this value, replace the value with the last value
B, Advantages:
Can effectively overcome the
This section describes the unique properties of Linear Time-varying systems (Note: Only the LTI system can meet the requirements, and other systems may not !)
Three algebraic properties: Exchange Law, combination law, allocation Law
In a series cascade, positions can be exchanged freely to meet the exchange law. For example, if it is not a linear system, positions cannot be changed randomly in a series cascade, for example, the square after the first request is different from the square before
view and modify.
Search box to be smart. When searching, users can provide a similar "common search term" for reference. In addition, when the user enters a word, you can provide some "recommended results" directly below. The search on Apple's official website is a good example of this best practice.
Search on Apple's official websitev. Know your usersYoung geeks love to explore new things. A somewhat complex website, if there is good content, will have a strong interest in young peopl
1, the Limiting filter method (also known as the Program Judgment Filter method)
#define A 10char value;Char filter (){Char New_value;New_value = Get_ad ();if ((New_value-value > A) | | (Value-new_value > A)return value;return new_value;}
A, Method:Based on experience, determine the maximum allowable deviation of two samples (set to a)Each time a new value is detected:This value is valid if the difference between this value and the last value is If the difference between this value and
Based on the discussion of crosstalk between codes in the previous section, we can summarize the requirements for the impulse response H (t) of the baseband transmission system as follows:(1) The baseband signal after transmission at the sampling point of the cross-talk, that is, the instantaneous sampling value should meet
(4-18)(2) The tail attenuation should be fast.
(4-18) The cross-talk condition given by the uncensore
In box2d, as long as we set the object density, friction, elasticity and other attributes, they will simulate the real world for collision, if you want to perform some special processing based on these collisions, You need to obtain the force of the collision between them to do what you want based on the force, use the following line of code in the lufylegend repository to detect collisions.
[Javascript]LGlobal. box2d. setEvent (LEvent. POST_SOLVE, postSolve );The collision function is as follow
blocked. The more the block, the worse it is. Yue Jiajun's cavalry, Zhu xianzhen, broke eight hundred million, not just brave. I hate Yue Wang for being a blind man and * the party, and the fine soldiers are exhausted, but there are always two people who have passed down both internal and gun techniques. In the late Ming and Early Days of the New Year's Day, as Zhang Sanfeng's hand gathers great achievements, the inner and Taiji said that Chen Changxing and Yang luchan would be the only way to
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.