نتایج جستجو برای: variable return to scale

تعداد نتایج: 10766280  

Journal: :Remote Sensing 2018
Xunhe Zhang Nai-ang Wang Zunyi Xie Xuanlong Ma Alfredo Huete

Water resources play a vital role in ecosystem stability, human survival, and social development in drylands. Human activities, such as afforestation and irrigation, have had a large impact on the water cycle and vegetation in drylands over recent years. The Badain Jaran Desert (BJD) is one of the driest regions in China with increasing human activities, yet the connection between human managem...

2009
RICHARD D. STEVENS

Characterizing habitat associations of species is fundamental to understanding the mechanistic basis of community organization. Typically, investigators estimate microhabitat characteristics that account for significant amounts of variation in species composition. Nonetheless, highly resolved microhabitat characteristics may account for no more variation in species composition than coarse macro...

ژورنال: رویش روانشناسی 2019
, ,

The purpose of this study is to share of Pleasure seeking, positive affect, negative affect, and sense of self-efficacy in relapse to drug. This study design was Descriptive and correlational. The study population consisted of all addicts return to a drug relapse occurred in less than one year And referred to addiction treatment centers in Tehran in 1395 was the 8th District Improved convenient...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده هنر 1391

now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ادبیات، زبانهای خارجی و تاریخ 1393

the current thesis is composed in five chapters in the following fashion: chapter two encompasses the applied framework of the project in details; the methodology of carl gustav jung to explain the process of individuation, the major archetypes and their attributes and his techniques to assess the mind’s strata are all explained. moreover, the austrian psychoanalysts, heinz kohut’s models of a...

آزادی, هرمز, پوررضا, ابوالقاسم, گودرزی, غلامرضا,

Background and Aim: The hospital is considered as the biggest and the most costly unit of a health care system. Therefore, paying full attention to its cost efficiency is very important. The objective of this study was to assess the technical efficiency of hospitals affiliated with Tehran University of Medical Science by data envelopment analysis method.Materials and Methods: Technical efficien...

Journal: :مهندسی صنایع 0
بهلول ابراهیمی دانشجوی دکتری مهندسی صنایع پژوهشکدة توسعة تکنولوژی جهاد دانشگاهی شریف مرتضی رحمانی دانشیار گروه پژوهشی مهندسی صنایع پژوهشکدة توسعة تکنولوژی جهاد دانشگاهی شریف و دانشیار دانشکدة علوم پایه، دانشگاه علم و فرهنگ مرتضی خاکزار بفرویی استادیار گروه پژوهشی مهندسی صنایع پژوهشکدة توسعة تکنولوژی جهاد دانشگاهی شریف

sohrabi and nalchigar (2010) proposed a new data envelopment analysis (dea) model to identify the most efficient decision-making unit (dmu) in presence of imprecise data. in this paper, it is shown that the proposed model is not able to determine the most efficient dmu and is randomly introduced an efficient dmu. in addition, it is shown that this model determines the most efficient dmu in the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1389

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...

Journal: :iranian red crescent medical journal 0
amin heidarian school of medicine, hamadan university of medical sciences, hamadan, ir iran hamidreza abbasi school of medicine, hamadan university of medical sciences, hamadan, ir iran mehdi hasanzadeh hoseinabadi school of medicine, hamadan university of medical sciences, hamadan, ir iran azin hajialibeyg school of medicine, hamadan university of medical sciences, hamadan, ir iran seyed mohammad kalantar motamedi endocrinology and metabolism research center, tehran university of medical sciences, tehran, ir iran soroush seifirad endocrinology and metabolism research center, tehran university of medical sciences, tehran, ir iran; endocrinology and metabolism research center, shariati hospital, tehran, ir iran. tel: +98-9355799979, fax: +98-9355799979

patients and methods fifty nine patients with indication for carpal tunnel release randomly assigned into two groups: open (n=30) or knifelight (n=29). the patients compared regarding scar length, operation duration, time to return to daily activities and amount of pain at three weeks after operation based on visual analog scale. results there was no significant differences regarding age and se...

Journal: :European Journal of Operational Research 2009
Semra Agrali Joseph Geunes

We consider the allocation of a limited budget to a set of activities or investments in order to maximize return from investment. In a number of practical contexts (e.g., advertising), the return from investment in an activity is effectively modeled using an S-curve, where increasing returns to scale exist at small investment levels, and decreasing returns to scale occur at high investment leve...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید