نتایج جستجو برای: gap analysis

تعداد نتایج: 2932444  

Journal: :تولید گیاهان زراعی 0
امیر حجارپور دانشجوی دکتری اکولوژی گیاهان زراعی دانشگاه علوم کشاورزی و منابع طبیعی گرگان افشین سلطانی هیت علمی گروه زراعت دانشگاه گرگان بنیامین ترابی هیت علمی گروه زراعت دانشگاه گرگان

background and objectives:due to increase in the world population and increasing concerns about the future food security, shrinking the yield gap has became a hot area of research in field crops. estimation the amount of yield gap and determination of it’s causes requires using proper methods. boundary line analysis is a statistical method that can quantify the response of yield to an environme...

Journal: :Journal of Management and Science 2013

2016
Eric Balkanski Jason D. Hartline

We consider the problem of budget feasible mechanism design proposed by Singer (2010), but in a Bayesian setting. A principal has a public value for hiring a subset of the agents and a budget, while the agents have private costs for being hired. We consider both additive and submodular value functions of the principal. We show that there are simple, practical, ex post budget balanced posted pri...

Journal: :علوم اجتماعی 0
دکتر علی ربانی عاطفه محمدزاده یزد

the goal of conducting the current research was to study social factors affecting on the generation gap of values among mothers and daughters with an emphasis on religious values in the city of mashhad. for this goal, from the girls with 18 to 29 ages and their mothers, a group of 384 persons were selected from 12 areas of mashhad. for collecting data, the questionnaire technique has been used....

2017
Sergey Trofimov Aleksey Ivanov

We consider the problem of finding target vectors for which the nonzero duality gap exists in the problem of convex optimization. An infinitesimal approach to the duality gap analysis of convex problems is proposed. The approach is based on finding the order of smallness and the proportionality coefficient of perturbation function of the original optimization problem. We show that in case of du...

Journal: :پژوهش های تولید گیاهی 0
نسیم مقدادی دانشجوی سابق کارشناسی ارشد اگرواکولوژی گروه زراعت دانشگاه علوم کشاورزی و منابع طبیعی گرگان افشین سلطانی استاد گروه زراعت دانشگاه علوم کشاورزی و منابع طبیعی گرگان بهنام کامکار دانشیار گروه زراعت دانشگاه علوم کشاورزی و منابع طبیعی گرگان امیر حجارپور دانشجوی دکتری اکولوژی گیاهان زراعی، گروه زراعت دانشگاه علوم کشاورزی و منابع طبیعی گرگان

it is essential to understand crop yield potentials and exploitable gaps to detect yield constraints of crops. yield gap analysis is a method to evaluate our systems distance from actual capability of a region to produce a given crop which will direct researches and help for cropping patterns design and programming. moreover, knowledge on a region capability could result in investigating on giv...

Journal: :Family & Community Health 2019

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