We obtained the energy transport velocity distribution for a three dimensional ideal cloak explicitly. Near the operation frequency, the energy transport velocity has rather peculiar distribution. The velocity along a line joining the origin of the cloak is a constant, while the velocity approaches zero at the inner boundary of the cloak. A ray pointing right into the origin of the cloak will experience abrupt changes of velocities when it impinges on the inner surface of the cloak. This peculiar distribution causes long time delays for beams passing through the ideal cloak within a geometric optics description.
标签： distribution dimensional transport obtained
上传时间： 2013-12-19
上传用户：zhliu007
This program demonstrates how to draw lines in a picture box using the GDI, controlling background color and line color. It also includes a simple animation using a timer.
标签： demonstrates controlling background program
上传时间： 2014-01-16
上传用户：小眼睛LSL
200-MHz ARM920T Processor • 16-kbyte Instruction Cache • 16-kbyte Data Cache • Linux® , Microsoft® Windows® CE-enabled MMU • 100-MHz System Bus • MaverickCrunch™ Math Engine • Floating Point, Integer, and Signal Processing Instructions • Optimized for digital music compression and decompression algorithms. • Hardware interlocks allow in-line coding. • MaverickKey™ IDs • 32-bit Unique ID can be used for DRM-compliant 128-bit random ID. • Integrated Peripheral Interfaces • 32-bit SDRAM Interface
标签： 8226 Cache kbyte Instruction
上传时间： 2017-04-08
上传用户：comua
Program Description: The program asks the user to choice from the menu an option A. Check to see if a number is prime. B. Count the number of vowels in a line. X. Exit the program.
标签： Description the Program program
上传时间： 2017-04-08
上传用户：磊子226
The future satellite communication systems are re- quired to support the higher transmission data rate for providing the multimedia services by employing the e铿僣ient modulation method such as multi-level QAM.
标签： communication transmission satellite systems
上传时间： 2017-04-18
上传用户：busterman
A Convex Hull is the smallest convex polygon that contains every point of the set S. A polygon P is convex if and only if, for any two points A and B inside the polygon, the line segment AB is inside P. One way to visualize a convex hull is to put a "rubber band" around all the points, and let it wrap as tight as it can. The resultant polygon is a convex hull.
上传时间： 2013-12-23
上传用户：it男一枚
ecos RTOS 原理介绍和应用开发The design philosophy of eCos was to augment an open-source RTOS (which meant no per-unit royalties) with source-level con?guration tools that would enable embedded developers to scale their RTOS from hundreds of bytes to hundreds of kilobytes without needing to manu- ally change a line of source code.
标签： RTOS open-source philosophy augment
上传时间： 2013-12-16
上传用户：天涯
this book mainly includes these contents :linked list, stacks and queuse, recursions, binary tree, multi tree, graphs, sorting, hashing, data compression.
标签： recursions includes contents binary
上传时间： 2017-05-28
上传用户：dengzb84
Migma intends to help teachers to get several different multiple-choice exams based on the user?s original. This command line program quickly generates a number of different new tests (and their respective answer sheets
标签： multiple-choice different teachers intends
上传时间： 2013-12-17
上传用户：Miyuki
//初始化 initscr() //获得屏幕尺寸 getmaxyx(stdscr, h, w) //画背景 for(i=0 i<h i++) for(j=0 j<w j++){ mvaddch(i, j, ACS_CKBOARD) } refresh() //建立窗口 pad = newpad(80, 128) for(i=0 i<80 i++){ char line[128] sprintf(line, "This line in pad is numbered d\n", i) mvwprintw(pad, i, 0, line) } //刷新屏幕 refresh() prefresh(pad, 0, 1, 5, 10, 20, 45) for(i=0 i<50 i++){ prefresh(pad, i+1, 1, 5, 10, 20, 45) usleep(30000) } //等待按键 getch()
标签： getmaxyx initscr stdscr for
上传时间： 2014-08-30
上传用户：龙飞艇
