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.
標(biāo)簽： effectiveness analytically numerically cloaking
上傳時(shí)間： 2017-03-30
上傳用戶：zxc23456789
jsp編寫的B/S架構(gòu)的企業(yè)人力資源管理系統(tǒng)，代碼夠全，功能夠多，需要的下載吧
標(biāo)簽： jsp 編寫 架構(gòu) 人力資源管理系統(tǒng)
上傳時(shí)間： 2017-03-31
上傳用戶：R50974
CDMA mobile radio design Jon B. Groe Lawrence E. Larson
標(biāo)簽： B. E. Lawrence mobile
上傳時(shí)間： 2017-03-31
上傳用戶：lz4v4
設(shè)有兩個(gè)周期性的實(shí)時(shí)任務(wù)A和B，任務(wù)A要求每20ms執(zhí)行一次，執(zhí)行時(shí)間為10ms 任務(wù)B要求每50ms執(zhí)行一次，執(zhí)行時(shí)間為25ms 試編一調(diào)度程序按最小松弛度優(yōu)先算法對(duì)這兩個(gè)任務(wù)進(jìn)行調(diào)度并輸出每次調(diào)度時(shí)被調(diào)入運(yùn)行任務(wù)的狀態(tài): (任務(wù)名，所處周期數(shù)，調(diào)度時(shí)刻，運(yùn)行持續(xù)時(shí)間)。
標(biāo)簽： 周期
上傳時(shí)間： 2013-12-25
上傳用戶：924484786
b-樹的增加,因?yàn)槲铱吹降馁Y料里的最大關(guān)鍵字?jǐn)?shù)目為m-1,我考慮了一下,2-3樹的刪除會(huì)比較麻煩,后來看了下算法導(dǎo)論,別人的數(shù)目是2t-1,所以相同情況下是2-3-4樹,我考慮按照這個(gè)因子再寫一個(gè),增加刪除部分,有問題可以聯(lián)系我,聯(lián)系方式在程序中已注明.
標(biāo)簽： 樹 字?jǐn)?shù) 刪除 比較
上傳時(shí)間： 2017-04-04
上傳用戶：pkkkkp
The GraphicAnimation project is a program for the AT91RM9200 using Atmel AT91RM9200-EK Evaluation Board
標(biāo)簽： GraphicAnimation 9200 Evaluation project
上傳時(shí)間： 2017-04-04
上傳用戶：himbly
一個(gè)報(bào)稅管理系統(tǒng)AJAX第二版B-S.rar
標(biāo)簽： AJAX B-S 管理系統(tǒng)
上傳時(shí)間： 2014-01-10
上傳用戶：qw12
b-樹的增加,刪除,已對(duì)八百萬個(gè)數(shù)據(jù)進(jìn)行過測試,而且是對(duì)多個(gè)M值
標(biāo)簽： 樹 刪除 數(shù)據(jù) 測試
上傳時(shí)間： 2014-01-17
上傳用戶：nairui21
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.
標(biāo)簽： Description the Program program
上傳時(shí)間： 2017-04-08
上傳用戶：磊子226
The applet illustrates the behaviour of binary search trees, Searching and Sorting Algorithms, Self-adjusting Binary Search Trees, Symmetric binary B-trees,聽Data structure and maintenance algorithms
標(biāo)簽： illustrates Algorithms Searching behaviour
上傳時(shí)間： 2017-04-10
上傳用戶：helmos
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