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10篇 您的检索式:作者名="Sushil Pandey"
    题名 作者 年代 出处 被引量
1基于倾向得分匹配法分析农业技术采用对农户收入的影响——以滇西南农户改良陆稻技术采用为例显示文摘【目的】考察改良陆稻技术采用对农户收入的影响,以促进农业技术的创新与进步。【方法】为解决传统方法分析农业技术效应时农户技术采用'自选择'而带来的因果干涉问题,引入非参数的倾向得分匹配法,利用滇西南山区8县16村2000年、2002年和2004年473个农户调查数据,评估改良陆稻技术采用对山区农户收入的效应。【结果】利用倾向得分匹配法分析,改良陆稻技术采用户的收入在2000年、2002年和2004年分别是非采用情况下的1.49、1.34和1.23倍。利用描述性统计分析方法,以上3个年份中技术采用户的收入分别是非采用户的1.79、1.49和1.27倍。【结论】改良陆稻技术的采用对农户的收入提高具有稳健的正向效应。在考察的年份里,技术采用的效应呈现递减趋势。与倾向得分匹配法相比,一般描述性统计分析会高估技术采用的效应。陈玉萍 吴海涛 陶大云 Sushil Pandey 徐鹏 胡凤益 丁士军 王怀豫 冯璐 2010中国农业科学2010,43,17:28
2技术采用对农户间收入分配的影响:来自滇西南山区的证据显示文摘本文采用多部门模型分析改良陆稻技术采用对收入在技术采用户和非采用户间分配的影响,并利用滇西南山区农户调查数据对分析的推论进行了验证。结果表明,当农户的生产组合整体从陆稻生产向非陆稻生产方向调整时,采用了改良陆稻技术的农户生产组合调整的幅度小于非采用农户调整的幅度,来自陆稻的收入进一步集中于技术采用户;由于技术的'溢出效应',来自非陆稻的收入也向技术采用户集中;新技术的采用促进了技术采用户收入水平的整体提高。陈玉萍 吴海涛 Sushil Pandey 陶大云 2009中国软科学2009,,7:4
3Assessing the Impact of Agricultural Technology Using Propensity Score Matching Analysis in Rural China显示文摘Wu Haitao Ding Shijun Sushil Pandey Tao Dayun 2012Asian Economic Journal2012,24,6:1
4Coping with Drought in Rice Farming in Asia: Insights from A Cross - Country Comparative Study 显示文摘Sushil Pandey 2007Agricultural Economics2007,,12:1
5Novel CMS lines in pigeonpea[Cajanus cajan(L.)Millspaugh]derived from cytoplasmic substitutions,and their effective restoration and deployment in hybrid breeding显示文摘The availability of stable cytoplasmic male sterile(CMS or A) lines coupled with a robust restoration system(R lines) is an essential prerequisite for efficient hybrid breeding.CMS-enabled hybrid technology holds immense potential to enhance the long-stagnant productivity of pigeonpea. In the present investigation, cytoplasmic substitutions were made in the nuclear backgrounds of early-maturing pigeonpea varieties or lines. Three new CMS lines(ICPL 88039 A, Pusa 992 A, and DPP 3-2A) resulted from genetic crosses involving cytoplasmic donors from A2(GT 288A) and A4(ICPA 2089) categories. In addition to visual inspection of anthers, pollen-staining techniques and scanning electron microscopy(SEM)analysis were used to confirm pollen sterility. Further, given the relevance of the plant mitochondrial genome to CMS manifestation, 25 mitochondrion-specific DNA markers were assayed on these newly developed A lines and isogenic maintainer(B) lines. DNA polymorphism between Pusa 992 A and Pusa 992 B as revealed by the nad7a_del marker confirmed the successful combination of sterilizing cytoplasm(A4) and nonrestoring nuclear background(Pusa 992). Such cytoplasm-specific DNA markers are required for A2-CMS as well. Further, to assess restoration ability, potential restorers were crossed with these CMS lines, and as a consequence, promising A × R combinations exhibiting 100%pollen fertility could be identified. In parallel, we also analyzed the inheritance patterns underlying fertility restoration using ICPL 88039A-derived F2 and BC1F1populations,and established a monogenic dominant model to explain the phenomenon of A2-CMS restoration. In summary, we report the successful development of new CMS lines and describe their effective deployment in hybrid breeding of pigeonpea.Abhishek Bohra Rintu Jha Indra Prakash Singh Gaurav Pandey Shalini Pareek Partha Sarathi Basu Sushil Kumar Chaturvedi Narendra Pratap Singh 2017The Crop Journal2017,5,1:1
6Assessing the Impact of Agricultural Technology Using Propensity Scare Matching Analysis in Rural China 显示文摘Wu Haitao Ding Shijun Sushil Pandey Tao Dayun 2012Asian Economic Journal2012,,6:1
7Long-Term Outcomes of Patients Undergoing Curative Laparoscopic Surgery for Mid and Low Rectal Cancer显示文摘Jeffrey W. Milsom Olival de Oliveira Koiana I. Trencheva Sushil Pandey Sang W. Lee Toyooki Sonoda 2009Diseases of the Colon & Rectum2009,,7:1
8印度半干旱热带地区径流集蓄与补充灌溉的经济性显示文摘前言 径流集蓄是从特别处理过的汇水区域收集径流以便有利于应用的过程。它基本上由两部分组成,即收集汇水区内外的径流和贮蓄它们以备今后利用。在澳大利亚、美国、中东和印度,径流集蓄以多种形式被广泛实施着;因为这些地区天然降雨很不充足,而且又无其它廉价水源可供利用。 本文研究的径流集蓄系统是国际作物研究学会为半干旱热带地区开发出的一套改良作物栽培技术的一个组成部分(简称ICRIS AT)。这套技术是为便于在印度半干旱热带地区栽培两季作物而设计的;过去,该地区农场只在干旱季节才耕种。这套技术适合于年降雨量大于750mm。Sushil Pandey 林性粹 1992灌溉排水1992,11,2:1
9Longterm Complications of Hand-Assisted Versus Laparoscopic Colectomy显示文摘Toyooki Sonoda Sushil Pandey Koiana Trencheva Sang Lee Jeffrey Milsom 2008Journal of the American College of Surgeons2008,,1:1
10Direct observation of Anderson localization in plasmonic terahertz devices显示文摘We present the first experimental observation of Anderson localization in the terahertz frequency range using plasmonic structures.To accomplish this goal,we designed THz waveguides consisting of a one-dimensional array of rectangular apertures that were fabricated in a freestanding metal foil.Disorder is introduced into the waveguide by offsetting the position of each aperture by a random distance within a prescribed range.For example,for a waveguide with apertures spaced by 250μm in a periodic waveguide,10%disorder would correspond to the apertures being shifted by a random value between±25μm along the waveguide axis.We find that for disorder levels below 25%,there is only an increase in the propagation loss along the device.However,for two specific waveguides with 25%disorder,we observe a spatially localized mode that lies just within the stop band of the device and exhibits a double-sided exponential spatial decay away from the maximum.Shashank Pandey Barun Gupta Sushil Mujumdar Ajay Nahata 2016Light(Science & Applications)2016,5,1:0
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