We analyze, both analytically and numerically, the effectiveness
of cloaking an infinite cylinder from observations by electromagnetic
waves in three dimensions. We show that, as truncated approximations
of the ideal permittivity and permeability tensors tend towards
the singular ideal cloaking fields, so that the anisotropy ratio tends to
infinity, the D and B fields blow up near the cloaking surface. Since
the metamaterials used to implement cloaking are based on effective
medium theory, the resulting large variation in D and B will pose a
challenge to the suitability of the field averaged characterization of "
and 碌. We also consider cloaking with and without the SHS (softand-
hard surface) lining, shown in [6] to be theoretically necessary
for cloaking in the cylindrical geometry. We demonstrate numerically
that cloaking is significantly improved by the SHS lining, with both
the far field of the scattered wave significantly reduced and the blow
up of D and B prevented.
The ROSETTA C++ library is a collection of C++ classes and routines that enable discernibility-based empirical modelling and data mining, developed as part of my dissertation. A brief presentation of the library can be found therein.
數(shù)字運算，判斷一個數(shù)是否接近素數(shù)
A Niven number is a number such that the sum of its digits divides itself. For example, 111 is a Niven number because the sum of its digits is 3, which divides 111. We can also specify a number in another base b, and a number in base b is a Niven number if the sum of its digits divides its value.
Given b (2 <= b <= 10) and a number in base b, determine whether it is a Niven number or not.
Input
Each line of input contains the base b, followed by a string of digits representing a positive integer in that base. There are no leading zeroes. The input is terminated by a line consisting of 0 alone.
Output
For each case, print "yes" on a line if the given number is a Niven number, and "no" otherwise.
Sample Input
10 111
2 110
10 123
6 1000
8 2314
0
Sample Output
yes
yes
no
yes
no
Six objects here:
The document you re reading & its Chinese version
Set of "HWDesign" includes all hardware design files
"SWDesign" includes all software design files(firmware/driver and maybe applications as well)
Set of "Documents" includes files of main part of thesis and its reference
"Thesis" includes files used to academe.
Example of a digital data transmission implementing GMSK modulation
This Simulink model simulates as an example the transmission and reception of random digital data modulated with GMSK. The purpose of this model is to illustrate how part of the GSM transmission and reception works. It also measures the BER, affected by an AWGN channel
LinCAN is a Linux kernel module that implements a CAN driver capable of working with multiple cards, even with different chips and IO methods. Each communication object can be accessed from multiple applications concurrently.
It supports RT-Linux, 2.2, 2.4, and 2.6 with fully implemented select, poll, fasync, O_NONBLOCK, and O_SYNC semantics and multithreaded read/write capabilities. It works with the common Intel i82527, Philips 82c200, and Philips SJA1000 (in standard and PeliCAN mode) CAN controllers.
LinCAN project is part of a set of CAN/CANopen related components developed as part of OCERA framework.
The purpose of this lab is to introduce the concept of FSMs with a datapath, and to
study the usage of more complex test benches. Also, we enforce a rudimentary design
methodology by assuming that the students are part of a bigger project, and have no
knowledge of VHDL-implementation of the datapath (made by a hypothetical other
group) other than its predefined Entity Interface until they come to the lab.
The rest of this document is structured as follows: Section 2 describes some prelimi-
nary reading and exercises that should be done before the lab. Section 3 details the
design tasks that should be carried out to pass this lab.
UCOS/II for ICCAVR
- The version of UCOS/II is 2.04
- the original port was done by Ole Saether for the IAR compiler. Jens E.
Holtegaard ported one version using ICCAVR. Joerg Meyer did another port
(using Jens port as a start?). This is basically Joerg s port plus a
little bit of changes and documentation by me.
- YOU MUST DOWNLOAD THE MAIN PART OF THE UCOS/II FROM THE UCOS/II WEBSITE
http://www.ucos-ii.com . The supplied project file assumes the portable
source is in the ..\source directory.
- Joerg has written couple document showing the stack frames etc. but it
is in German :-) They are included in this directory.
- The Timer2 overflow interrupt is used for Timer Tick. If you want to
change that, modify os_cpu_c.c and os_cpu_a.s
- I have tested this using ATMega103 with and without external RAM
using AVR Studio simulator. See test1.c test program. Both Code
Compressed (PRO) and STD versions have been tested.
The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable
The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard for
the coding (compression) of natural video images. The new standard [1] will be known as H.264 and
also MPEG-4 Part 10, “Advanced Video Coding”. This document introduces the concepts of
Switching P and I slices, part of the Extended Profile of H.264.
