intro to gui event handling and inner classes

... that Python’s random class contains a variety of random number generators To see what is available, get into interactive mode in Python and type >>> import random >>> dir(random) To find out what ... tutorial As to the GUIs, I highly recommend DDD, which provides a GUI front end to (a somewhat modified) I am not a fan of IDEs They are slow to load and occupy too much space on the screen, and ... simulated time clock to the earliest event in the event list, which is for time 1.2 It removes this event from the event list, and then resumes the thread corresponding to the 1.2 event, i.e the thread...

Ngày tải lên: 01/07/2014, 17:28

... thành phần quan trọng Event source Event Listener/Handler Event Object Mô hình kiện Event source Thành phần giao diện tạo kiện Ví dụ: button, mouse, keyboard Event Listener/Handler Nhận kiện xử ... chiếu Lớp EventObject Trong gói java.util Lớp AWTEvent Một lớp trực tiếp EventObject Định nghĩa gói java.awt Gốc tất kiện dựa AWT Lớp có tên quy ước Event Những lớp kiện Event Classes Miêu ... ComponentEvent Extends AWTEvent Được thể component di chuyển, thay đổi kích thước, hiển thị ẩn InputEvent Extends ComponentEvent Lớp kiện gốc trìu tượng cho tất lớp kiện input ActionEvent Exends AWTEvent...

Ngày tải lên: 09/08/2016, 13:55

... // It stops capturing events and deregisters the handlers function upHandler (event) { // Stop capturing and handling drag events document.releaseEvents (Event. MOUSEMOVE | Event. MOUSEUP); document.onmousemove ... any event handler to stop further propagation of the event by calling the stopPropagation( ) method of the Event object that represents the event We'll see more about the Event object and its stopPropagation( ... the event object passed to an event handler for a click event implements all the methods and properties defined by each of the MouseEvent, UIEvent, and Event interfaces Finally, the MutationEvent...

Ngày tải lên: 05/10/2013, 12:20

... would like to express my thanks to my friends who were willing to help me during the course In particular, I find myself indebted to my family especially my husband for their love, care and tolerance ... then decide whether to go over or to help that pair or group 12 Instead, we can also go round the class watching and listening to specific pairs and groups Then we may stop and intervene if it ... they took part in pair work 33 and group work activities It was not surprising to find out that the majority of the students felt active and free as they were put in pairs and groups to work together...

Ngày tải lên: 06/02/2014, 14:45

... to reduce a vector to components, to reduce vector equations to scalar equations, to define work and power, and to help solve geometry problems The dot product of two vectors A and B is written ... to move potatoes A connecting rod is designed to move a crankshaft; a crankshaft, to move a transmission; and a transmission, to move a wheel And wheels are designed to move bicycles, cars, and ... and machine parts are designed to move something Bicycles, planes, elevators, and hearses are designed to move people; a clockwork, to move clock hands; insect wings, to move insect bodies; and...

Ngày tải lên: 17/03/2014, 14:24

... contravariant vectors are just tangent vectors: the contravariant vector vi corresponds to the tangent vector given by v = vi , xi so we shall henceforth refer to tangent vectors as contravariant vectors ... vectors at a general point, and sketch the resulting vectors 23 Contravariant and Covariant Vector Fields Question How are the local coordinates of a given tangent vector for one chart related to ... this amounts to integrating |sin x1 sin x2 sin x3| = sin k from to 2, giving us a total length of 2sin k Thusk the universe expands to a maximum at x = /2 and then contracts back toward the Big...

Ngày tải lên: 17/03/2014, 14:28

... equal to 4, and 10 ways to draw the second number Thus, there are 50 ways to draw a number with a first digit less or equal to There is only one way to draw a first number equal to 5, and ways to ... Determinants and co-factors I.14 Inverse of a matrix in terms of co-factors I.15 Eigenvalues and eigenvectors I.15.1 Eigenvalues I.15.2 Eigenvectors I.15.3 Eigenvalues and eigenvectors of symmetric ... numbers 7.4.1 Random functions depending on finite-dimensional random vectors 7.4.2 Random functions depending on infinite-dimensional random vectors 7.4.3 Consistency of M-estimators 7.5 Dependent...

Ngày tải lên: 31/03/2014, 15:23

... one -to- one, many -to- one and one -to- many functions in Figure 1.2 one -to- one domain many -to- one range domain one -to- many range domain range Figure 1.2: Diagrams of One -To- One, Many -To- One and One -To- Many ... laws 23 Zero and Unit Vectors The additive identity element for vectors is the zero vector or null vector This is a vector of magnitude zero which is denoted as A unit vector is a vector of magnitude ... the factors only vanish at x = −2, 1, π, p(x) only vanishes there Since factors are nonnegative, the polynomial is non-negative 21 Chapter Vectors 2.1 2.1.1 Vectors Scalars and Vectors A vector...

Ngày tải lên: 31/03/2014, 16:19

... Drive the Stock Market, who through his friendship, guidance, and mentorship, inspired and encouraged me to achieve what I could Also, for his practical support and introductions to traders during ... UK and second, to allow the reader to assess the quality of this course on a continuum from unsatisfactory to satisfactory In other words, it is not my intention to bring Chief Wizard (CW) to ... analysis is to make this information manageable No trader can master all tools in technical analysis and it is therefore essential to understand what markets you wish to trade in and the tools which...

Ngày tải lên: 03/05/2014, 13:15

... presently Definition 4.9 If V and W are contravariant (or covariant) vector fields on M, and if å is a real number, we can define new fields V+W and åV by (V + W)i = Vi + Wi and (åV)i = åVi It is easily ... system Give and example of a contravariant vector field that is not covariant Justify your claim Verify the following claim If V and W are contravariant (or covariant) vector fields on M, and if å ... ˙ as a function of the xi and as a function of the x–j (b) Calculate Ci = ∂˙/∂xi and C—j = ∂˙/∂x–j (c) Verify that Ci and C—j transform according to the covariant vector transformation rules Is...

Ngày tải lên: 12/08/2014, 16:20

... problem is, we cannot expect v to be a vector—that is, satisfy the correct transformation laws But we have a contravariant 4-vector dxi T = dt i (T stands for tangent vector Also, remember that t ... of space, we would like to convert the units of x4 (the units of time) to match the units of the other axes Now, to convert units of time to units of distance, we need to multiply by something ... path, and define a new function s (arc length) by s(t) = L(a, t) = length of path from t = a to t Then s is an invertible function of t, and, using s as a parameter, ||dxi/ds||2 is constant, and...

Ngày tải lên: 12/08/2014, 16:20

... to be e4, but that would not be orthogonal to the above first vector By symmetry (to get a zero inner product) we are forced to take the last vector to be “- ∫c 1-∫ , 0, 0, 1-∫2 ‘ This gives the ... the first column of D To keep things simple, let us take the next two columns to be the corresponding basis vectors e2, e3 Now we might be tempted to take the forth vector to be e4, but that would ... respect to t), and written DX/dt To compute it, we need to a little work First, some linear algebra Lemma 8.1 (Projection onto the Tangent Space) Let M be a Riemannian n-manifold with metric g, and...

Ngày tải lên: 12/08/2014, 16:20

... tangent vector (again with respect to s to make it independent of the paramaterization) is normal to the curve, and its magnitude is a measure of how fast the curve is “turning,” and so we call ... x– and y– are any two oriented coordinate systems at m and change-of-coordinate matrices D and E with respect to some inertial frame x at m, and if the coordinates of the tensor with respect to ... equations g–ij = ∂xk ∂xl g ∂x–i ∂x–j kl ……… (I) and we want these to be specified and equal to “V(i), V(j)‘ when evaluated at m This is easy enough to do: Just set  ∂xi A(i,j) =  j  ∂x–   ...

Ngày tải lên: 12/08/2014, 16:20

... of these vectors to the curve That is, does the vector V(4) remain parallel, and the vectors {V(1), V(2), V(3), V(4)} remain orthogonal in the sense of 8.2? Answer If X and Y are vector fields, ... ⌡ a Question Given a fixed vector Xj(å) at the point å é M, and a curve C originating at å, it is possible to define a vector field along C by transporting the vector along C in a parallel fashion? ... 10.2 If Xj(å) is any vector at the point å é M, and if C is any path from å to ∫ in M, then the parallel transport of X j(å) along C is the vector Xj(∫) given by the solution to the system (I) with...

Ngày tải lên: 12/08/2014, 16:20

... converts the covariant vector dV into a contravariant P field (P ), and thus suggests a type (2, 0) tensor To get an honest tensor, we must define T V on arbitrary covariant vectors (not just those ... approach zero) To evaluate its coordinates on an orthonormal (Lorentz) frame, we define T ab e = T (e b )a, so that we can take u, w, and v to be the other three basis vectors This permits us to use ... simpler formula (I) to obtain the coordinates Of interest to us is a more usable form—in terms of quantities that can be measured For this, we need to move into an MCRF, and look at an example...

Ngày tải lên: 12/08/2014, 16:20

... generalize the (second order differential) operator Ô to some yet -to- bedetermined second order differential operator ∆ This allows us to generalize (I) to ∆(g**) = kT**, where k is some constant In ... generalize the mass density to energy density (recall that energy and mass are interchangeable according to relativity), Î A Newton is the force that will cause a 1-kilogram mass to accelerate at m/sec2 ...   ,   where we have introduced the exponentials to fix the signs, and where ¡ = ¡(r), and ∞ = ∞(r) Using this version of g, we can calculate the Einstein tensor to be (see the exercise set!)...

Ngày tải lên: 12/08/2014, 16:20

... particle infinitely long to get there! Inside the Event Horizon—A Dialogue Tortoise: I seem to recall that the metric for a stationary observer (situated inside the event horizon) is still given ... direction to coordinate time! Achilles: Now I'm really confused Does this mean that for r to decrease with coordinate time, it has to increase with proper time? Tortoise: Yes So you were (as usual) totally ... the exercise set, you will see how this leads to Newton's Law of Gravity Exercise Set 14 Use Ô2˙ = 4πG® and the divergence theorem to deduce Newton's law Ô ˙ = GM/r2 for a spherical mass of uniform...

Ngày tải lên: 12/08/2014, 16:20

... continue to collapse and its electrons will be pushed closer and closer to the nuclei At some point, a nuclear reaction begins to occur in which electrons 127 and protons combine to form neutrons (and ... nearly massless and noninteracting) A sufficiently dense star is unstable against such an interaction and all electrons and protons are converted to neutrons leaving behind a chargeless and nonluminous ... positive charge atomic nuclei and negative charge electrons Each metal nucleus is a few thousand times heavier than the set of electrons that were attached to it, so the nuclei (and not the electrons)...

Ngày tải lên: 12/08/2014, 16:20

... 22:54 Printer Name: Yet to Come AN INTRODUCTION TO 3D COMPUTER VISION TECHNIQUES AND ALGORITHMS An Introduction to 3D Computer Vision Techniques and Algorithms Bogusław Cyganek and J Paul Siebert ... Yet to Come An Introduction to 3D Computer Vision Techniques and Algorithms 3.3.3 Projective Transformation of the Pin-hole Camera Substituting (3.3) and (3.5) into (3.2) and disregarding distortions ... that that imaged surfaces appear to be randomly textured and are therefore locally uniquely distinguishable and hence able to be matched successfully using certain classes of image matching algorithm...

Ngày tải lên: 17/10/2014, 18:35

... ii) to produce normally and iii) to produce urgently Inventory allocation decision is to decide how to allocate limited inventory among different demand classes Specifically, if there is on-hand ... decisions to make given the current inventory level: i) not to produce, ii) to produce normally, and iii) to produce urgently Due to the exponential production times and Poisson demands assumptions, ... inventory is issued to meet high-priority demand first and the remaining is then available to satisfy low-priority demand Nahmias and Demmy [22] is the first to consider continuous-review inventory...

Ngày tải lên: 27/11/2015, 12:23