A new type of cloak is discussed: one that gives all cloaked objects the appearance of a flat conducting sheet. It has the advantage that none of the parameters of the cloak is singular and can in fact be made isotropic. It makes broadband cloaking in the optical frequencies one step closer.
標簽： appearance discussed cloaked objects
上傳時間： 2017-03-30
上傳用戶：rishian
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.
標簽： distribution dimensional transport obtained
上傳時間： 2013-12-19
上傳用戶：zhliu007
SQL中的單記錄函數 1.ASCII 返回與指定的字符對應的十進制數 SQL> select ascii( A ) A,ascii( a ) a,ascii( 0 ) zero,ascii( ) space from dual A A ZERO SPACE --------- --------- --------- --------- 65 97 48 32 2.CHR 給出整數,返回對應的字符 SQL> select chr(54740) zhao,chr(65) chr65 from dual ZH C -- -
上傳時間： 2017-04-14
上傳用戶：330402686
TC35i模塊有40個引腳，通過一個ZIF(Zero Insertion Force，零阻力插座)連接器引出。這40個引腳可以劃分為5類，即電源、數據輸入/輸出、SIM卡、音頻接口和控制。
上傳時間： 2017-04-23
上傳用戶：dave520l
OTSU Gray-level image segmentation using Otsu s method. Iseg = OTSU(I,n) computes a segmented image (Iseg) containing n classes by means of Otsu s n-thresholding method (Otsu N, A Threshold Selection Method from Gray-Level Histograms, IEEE Trans. Syst. Man Cybern. 9:62-66 1979). Thresholds are computed to maximize a separability criterion of the resultant classes in gray levels. OTSU(I) is equivalent to OTSU(I,2). By default, n=2 and the corresponding Iseg is therefore a binary image. The pixel values for Iseg are [0 1] if n=2, [0 0.5 1] if n=3, [0 0.333 0.666 1] if n=4, ... [Iseg,sep] = OTSU(I,n) returns the value (sep) of the separability criterion within the range [0 1]. Zero is obtained only with images having less than n gray level, whereas one (optimal value) is obtained only with n-valued images.
標簽： OTSU segmentation Gray-level segmented
上傳時間： 2017-04-24
上傳用戶：yuzsu
Basic function to locate and measure the positive peaks in a noisy data sets. Detects peaks by looking for downward zero-crossings in the smoothed third derivative that exceed SlopeThreshold and peak amplitudes that exceed AmpThreshold. Determines, position, height, and approximate width of each peak by least-squares curve-fitting the log of top part of the peak with a parabola.
標簽： peaks function positive Detects
上傳時間： 2017-04-26
上傳用戶：彭玖華
oracle中常用函數說明. SQL中的單記錄函數 1.ASCII 返回與指定的字符對應的十進制數 SQL> select ascii( A ) A,ascii( a ) a,ascii( 0 ) zero,ascii( ) space from dual A A ZERO SPACE --------- --------- --------- --------- 65 97 48 32 2.CHR 給出整數,返回對應的字符 SQL> select chr(54740) zhao,chr(65) chr65 from dual ZH C -- - 趙 A 3.CONCAT 連接兩個字符串 SQL> select concat( 010- , 88888888 )|| 轉23 高乾競電話 from dual 高乾競電話 ---------------- 010-88888888轉23
上傳時間： 2014-11-23
上傳用戶：zhangyigenius
The aip file contains few Matlab routines for 1D line scan analysis, 1D scaling, 2D scaling, image brightness or contrast variation routine and rouitne for finding area between zero cossings of 1D times series.
標簽： scaling contains analysis routines
上傳時間： 2014-01-19
上傳用戶：xmsmh
This program take a two sequences with differents lengths and transform in two sequences with same length with use zero padding method.
標簽： sequences with differents two
上傳時間： 2017-05-27
上傳用戶：kikye
4 16 64 QAM plots for simulated and theoretical results for OFDM system with addition of Cyclic prefix and a zero-Forcing equalizer.
標簽： theoretical for simulated addition
上傳時間： 2017-06-02
上傳用戶：hgy9473
