نتایج جستجو برای: cylindrical greens function

تعداد نتایج: 1236691  

1997
Jianxing Hu

A data processing scheme is proposed to deconvolve the recording footprint noise in the migration image. For computational convenience, we assume a far eld approximation and shift invariance in the Greens function. Preliminary results with synthetic data show that the footprint signature can be partially suppressed by deconvolution with the migration Greens function. However, much work needs to...

Journal: :Proceedings of the American Mathematical Society 1961

We describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. We present a new method for computing, electronic transport wave function and Greens function of the disordered Graphene. In this method, based on the small rectangular approximation, break up the potential barriers in to small parts. Then using the f...

Journal: :journal of optoelectronical nano structures 0
marjan jafari imam khomeini international university, qazvin, iran

we describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. we present a new method for computing, electronic transport wave function and greens function of the disordered graphene. in this method, based on the small rectangular approximation, break up the potential barriers in to small parts. then using the f...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

2018
Eric H. Reasor James T. Brosnan Margaret E. Staton Thomas Lane Robert N. Trigiano Phillip A. Wadl Joann A. Conner Brian M. Schwartz

BACKGROUND Interspecific hybrid bermudagrass [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] is one of the most widely used grasses on golf courses, with cultivars derived from 'Tifgreen' or 'Tifdwarf' particularly used for putting greens. Many bermudagrass cultivars established for putting greens can be genetically unstable and lead to the occurrence of undesirable off-type grasse...

1999
Richard Latin Zac Reicher William H. Daniel

Rationale Take-all patch, caused by Gaeumannomyces graminis f. sp. avenae, is favored by alkaline soils. Because the calcareous sands used for putting greens in the Midwest have a high pH, bentgrass greens constructed with high sand content or to USGA specifications are especially prone to the disease. Previous research addressed take-all patch on established bentgrass greens and fairways with ...

2006
Alton N. Sparks

Introduction Rimon (novaluron, Chemtura Corp.) is an insect growth regulator with activity against a variety of caterpillar pests and whiteflies. It has shown excellent activity against the diamondback moth and should prove useful in resistance management, once it is labeled on cole crops and greens. Recent research has indicated a potential problem with use of novaluron on some greens, as phyt...

1995
J. SCHIØTZ A. E. CARLSSON

Theories of toughness of materials depend on an understanding of the characteristic instabilities of the crack tip, and their possible interactions. In this paper we examine the effect of dislocation emission on subsequent cleavage of a crack and on further dislocation emission. The work is an extension of the previously published Lattice Greens Function methodology[1, 2, 3]. We have developed ...

2013
Martyn T. Jones

It is common fallacy in Britain that 'American' golf greens are constructed of sand; are excessively irrigated, excessively fertilized, and that their surfaces are soft. Generalisations of 'American' golf greens cannot be made. The diversity in climates, maintenance budgets, construction methods, etc., results in a host of 'American' greens. The grass species on the greens may consist of Poa an...

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