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您的检索式：作者名="HASHMAT Ali"
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| 1 | Technical efficiency of hybrid maize growers: A stochastic frontier model approach显示文摘This study investigated the effect of credit constraints and credit unconstraints on the technical efficiency of hybrid maize growers in the Khyber Pakhtunkhwa Province(KPK) of Pakistan. The primary data were collected by a direct elicitation method from 510 maize growers of KPK Province. Stochastic frontier model techniques were used for technical efficiency analyses. The results revealed that the mean technical efficiency difference between the two groups was 10.2%. The results of technical inefficiency effect modeling demonstrated that education of the household head, family size, number of married family members, off-farm income, farming experience, tractor drill, water irrigation through a lined course, certified seed, extension services, household saving variables, and a credit size variable had positive effects on technical efficiency for both credit constrained farmers(CCFs) and credit unconstrained farmers(UCCFs). In addition, age of household head and fragmented land values had negative effects on technical efficiency for both groups. However, the interest rate had positive and negative impacts on the technical efficiency of CCFs and UCCFs, respectively. Our results have significant implications for policies related to land use, interest rate, and banking sector expansion in the rural areas of Pakistan. | Imad Ali HUO Xue-xi Imran Khan Hashmat Ali Khan Baz Sufyan Ullah Khan | 2019 | Journal of Integrative Agriculture2019，18，10： | 3 |
| 2 | 热弹性波在半导体纳米结构非局部多孔介质中的反射显示文摘本文的工作是在含空洞的半导体纳米结构介质中将非局部弹性理论推广到分数阶热弹性理论,并对三相滞后热弹性模型中的反射现象进行了分析。研究表明,介质中存在四个耦合的纵向波和一个独立的纵向剪切波。当角频率小于截止频率时,纵波衰减,横波无衰减。膨胀波受空洞、热和非局域参数的影响,而横波只受非局部参数的影响。结果表明,反射系数受非局部参数和分数阶参数的影响。对硅材料的反射系数进行了解析计算和数值计算,并用图形进行详细讨论。作为特例,本研究得到了局部(经典)理论的结果。本研究除可应用于半导体纳米结构器件外,还可应用于地质学及地震学。 | HASHMAT Ali ADNAN Jahangir AFTAB Khan | 2020 | Journal of Central South University2020，27，11： | 1 |
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