A cylindrical wave expansion method is developed to obtain the scattering field for an ideal two-dimensional cylindrical invisibility cloak. A near-ideal model of the invisibility cloak is set up to solve the boundary problem at the inner boundary of the cloak shell. We confirm that a cloak with the ideal material parameters is a perfect invisibility cloak by systematically studying the change of the scattering coefficients from the near-ideal case to the ideal one. However, due to the slow convergence of the zeroth order scattering coefficients, a tiny perturbation on the cloak would induce a noticeable field scattering and penetration.
标签： cylindrical scattering expansion developed
上传时间： 2017-03-30
上传用户：lhc9102
The double-density DWT is an improvement upon the critically sampled DWT with important additional properties: (1) It employs one scaling function and two distinct wavelets, which are designed to be offset from one another by one half, (2) The double-density DWT is overcomplete by a factor of two, and (3) It is nearly shift-invariant. In two dimensions, this transform outperforms the standard DWT in terms of denoising However, there is room for improvement because not all of the wavelets are directional. That is, although the double-density DWT utilizes more wavelets, some lack a dominant spatial orientation, which prevents them from being able to isolate those directions.
标签： double-density improvement additional critically
上传时间： 2017-04-03
上传用户：dongbaobao
This guide is an attempt to compile a lot of that information in here and dummy it down. Perhaps it s a fairly common show, perhaps not. It might have even been a show that you taped. Whatever the case, you want to share it with others bur aren t quite sure how. This guide should be your answer. This guide is geared towards posting a show at SharingTheGroove.org. The instructions contained within are for that site. Other sites hosting BT shows may have slightly different procedures for getting the torrent to them. However, torrent creation will be the same. While this guide is being written with audio concerts in mind, the same holds true for the video section of The Groove.
标签： information Perhaps attempt compile
上传时间： 2013-12-19
上传用户：zsjzc
The Fat Fs module is a middleware that written in ANSI C. There is no platform dependence, so long as the compiler is in compliance with ANSI C. However it handles the system portable FAT structures. You must take the endian into consideration. It must be changed for your platform first or the compiler will abort with an error.
标签： C. dependence middleware platform
上传时间： 2014-01-12
上传用户：cccole0605
C is a general-purpose programming language. It has been closely associated with the UNIX operating system where it was developed, since both the system and most of the programs that run on it are written in C. The language, However, is not tied to any one operating system or machine and although it has been called a ``system programming language because it is useful for writing compilers and operating systems, it has been used equally well to write major programs in many different domains.
标签： general-purpose programming associated operating
上传时间： 2014-01-14
上传用户：我干你啊
Despite its highly adaptable and flexible nature, C++ is also one of the more complex programming languages to learn. Once mastered, However, it can help you organize and process information with amazing efficiency and quickness.
标签： programming adaptable flexible Despite
上传时间： 2013-12-31
上传用户：zhyiroy
The most straightforward approximation is the standard Gaussian approximation, where the MAI is approximated by a Gaussian random variable. This approximation is simple, However it is not accurate in general. In situations where the number of users is not large, the Gaussian approximation is not appropriate. In-depth analysis of must be applied. The Holtzman?s improved Gaussian approximation provides a better approximation to the MAI term. The approximation conditions the interference term on the operation condition of each user.
标签： approximation straightforward the Gaussian
上传时间： 2017-06-03
上传用户：dyctj
SensorSimII is the framework of a simulator that I have been working on to study how future sensor networks should operate. the simulator is written in a modular fashion so that it can be adapted to serve a number of needs. However, please remember that it is still a work in progress. This web page is here just to give a glimpse of the approach we ve taken with this simulator. Likewise this web page is simply preliminary information to attempt to answer some of the questions that researchers might have about this project.
标签： SensorSimII framework simulator working
上传时间： 2013-12-26
上传用户：wsf950131
*** HyperString v6.0 *** (c)1996-2000 EFD Systems, All rights reserved efd@mindspring.com *** THIS IS NOT PUBLIC DOMAIN SOFTWARE *** See below for license agreement, disclaimer, installation and use. Introduction --------------------------------------------------------- Welcome to HyperString! One of the most significant new features with Delphi32 is long dynamic strings. However, the built-in functions don t really exploit the full potential of these new strings. HyperString provides over 400 fast, efficient string management routines to help you realize the full power of this highly versatile new data type.
标签： HyperString reserved Systems rights
上传时间： 2017-07-04
上传用户：mhp0114
Besides enhanced looks and advanced features, one of the best things about Swing is its pluggable look and feel (PLAF). PLAF architecture allows seamless changes in the appearance of an application and the way an application interacts with the user. However, designing and developing a PLAF is much more exhaustive and complex. On the other hand, themes provide a simple alternative to change look and feel of the swing application. Themes are easier to implement and they enhance the visual appeal of the application UI using the default Java look and feel. Theme mechanism allows a developer to easily specify the default colors, fonts and icons used by the look and feel (L&F). It allows developers to write their own themes giving them a choice to show their application GUI the way they want it, rather than depending on the defaults provided by the system.
标签： pluggable enhanced advanced features
上传时间： 2014-01-23
上传用户：253189838
