نتایج جستجو برای: by combining positive mathematical programming and maximum entropy technique
تعداد نتایج: 17922865 فیلتر نتایج به سال:
in chapter 1, charactrizations of fragmentability, which are obtained by namioka (37), ribarska (45) and kenderov-moors (32), are given. also the connection between fragmentability and its variants and other topics in banach spaces such as analytic space, the radone-nikodym property, differentiability of convex functions, kadec renorming are discussed. in chapter 2, we use game characterization...
در مطالعه حاضر وضعیت اقتصادی صنعت زنبورداری در منطقه الموت و اثرات افزایش قیمت نهادههای تولیدی شکر و موم تحت سناریوهای مختلف بر میزان تولید عسل قابی، عسل شهد، بچه کندو و بازده ناخالص زنبورداران بررسی و تحلیل شد. برای این منظور از مدل برنامهریزی ریاضی مثبت[1] (PMP) و رهیافت حداکثر آنتروپی[2] (ME) استفاده شد. دادههای موردنیاز مربوط به سال 91-1390 بود که با تکمیل پرسشنامه بهوسیله 108 زنبوردار ...
The role of enzyme engineering in biotechnology, biological and pharmaceutical process cannot be over emphasized. This study compared the adsorption of amylase and protease on to manganese ferrite (MnFe2O4). The metal ferrite was synthesized via a sol – gel technique and characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), Electron paramagnet...
Inventory routing problems arise as simultaneous decisions in inventory and routing optimization. In the present study, vendor managed inventory is proposed as a collaborative model for reverse supply chains and the optimization problem is modeled in terms of an inventory routing problem. The studied reverse supply chains include several return generators and recovery centers and one collection...
Electron Paramagnetic Resonance (EPR) is a spectroscopic technique that detects and characterizes molecules with unpaired electrons (i.e., free radicals.) Unlike the closely related nuclear magnetic resonance (NMR) spectroscopy, EPR is still under development as an imaging modality. Athough a number of physical factors have hindered its development, EPR’s potential is quite promising in a numbe...
an economic system is comprised of different primary flows that can be captured in macroeconomic models with complex network relations. theoretically and empirically in this system, weak substitution or complementarity of environmental materials, like energy and other production factors such as capital, is undeniable. this is an effective critique on neoclassical economics. in this paper, we vi...
Climate change and human activities have increased negative pressure on natural ecosystems. Wetlands are such ecosystems that widely affected by these negative changes. Birds as a part of wildlife in a wetland have damaged by destruction of wetlands, so, a large group of them, are at risk of extinction. Habitat destruction in wetlands in arid and semi-arid areas has more negative effects on the...
Geometric programming is a mathematical technique, which has been developed for nonlinear optimization problems. This technique is based on the dual program with linear constraints. Determination of species concentrations in chemical equilibrium conditions is one of its applications in chemistry and chemical engineering fields. In this paper, the principles of geometric programming and its comp...
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