نتایج جستجو برای: تحلیل پنجره ای dea

تعداد نتایج: 393931  

2007
Timo Kuosmanen

Data envelopment analysis (DEA) is an axiomatic, mathematical programming approach to productive efficiency analysis and performance measurement. This paper shows that DEA can be interpreted as a nonparametric least squares regression subject to shape constraints on production frontier and sign constraints on residuals. Thus, DEA can be seen as a nonparametric counter-part of the corrected ordi...

1999
D Bouyssou

The purpose of this paper is to study proposals to use Data Envelopment Analysis (DEA) as a tool for Multiple Criteria Decision Making (MCDM). We ®rst recall, using a simple model, the equivalence between the concept of `ef®ciency' in DEA and that of `convex ef®ciency' in MCDM. Examples are then used to show that various techniques that have been proposed in the DEA literature to deal with MCDM...

2012
Ranko R. Nedeljković Dragana Drenovac

This article integrates fuzzy set theory in Data Envelopment Analysis (DEA) framework to compute technical efficiency scores when input and output data are imprecise. In conventional DEA inputs and outputs data are precise. However, traffic and transportation take place in an uncertain environment and input and output data might be imprecise. This article proposes a possibility approach for sol...

Journal: :Toxicology and applied pharmacology 1979
S J Barbee R Hartung

The Effect of Diethanolamine on Hepatic and Renal Phospholipid Metabolism in the Rat. BARBEE, S. J., AND HARTUNG, R. (1979). Toxicol. Appl. Pharmacol. 47,421430. DEA inhibited the in vitro synthesis of both phosphatidyl choline and phosphatidyl ethanolamine in liver tissue. In each caSe the K, was approximately 3 mu DEA. DEA inhibited the formation of phosphatidyl choline competitively, and pro...

2017
I Goy-Thollot U Giger C Boisvineau R Perrin M Guidetti B Chaprier A Barthélemy C Pouzot-Nevoret B Canard

BACKGROUND When dogs are transfused, blood compatibility testing varies widely but may include dog erythrocyte antigen (DEA) 1 typing and rarely cross-matching. OBJECTIVES Prospective study to examine naturally occurring alloantibodies against red blood cells (RBCs) and alloimmunization by transfusion using 2 antiglobulin-enhanced cross-match tests. ANIMALS Eighty client-owned anemic, 72 do...

با توجه به افزایش مصرف روز افزون انرژی و استفاده ی بدون حد و مرز از سوخت های فسیلی نگرانیهای زیادی برای تامین منابع انرژی که مهم ترین عامل زیستی زمین برای بقا در آینده می باشد، ایجاد نموده است. جهت گیری صحیح ساختمانها و درصد بهینه بازشوها، با توجه به اقلیم منطقه جغرافیایی، نحوه تابش خورشید در فصول گرم و سرد سال، زمان طلوع و غروب خورشید، ضرورت گرم کردن ساختمان در زمستان و یا تامین انرژی سرمایشی ...

ژورنال: :کیفیت و بهره وری صنعت برق ایران 0
مهرداد سلیمی mehrdad salimi islamic azad university, arak branch, department of industrial engineering, arak, iranدانشگاه آزاد اسلامی ، واحد اراک ، گروه مهندسی صنایع ، اراک ، ایران محمدعلی کرامتی mohammad ali keramati islamic azad university, arak branch, department of industrial engineering, arak, iranدانشگاه آزاد اسلامی ، واحد اراک ، گروه مهندسی صنایع ، اراک ، ایران

چکیده: به منظور بالابردن کیفیت، افزایش عمر اقتصادی و بهبود بخشیدن به قابلیت اطمینان درنیل به تأمین برق مورد نیاز، ارزیابی کارایی بخش های تحت نظارت (تولید ، انتقال و فوق توزیع ) هر شرکت برق منطقه ای در ایران به عنوان یک چالش احساس می شود . این مقاله با استفاده از رویکرد سه مرحله ای dea داده های جمع آوری شده از 16 شرکت برق منطقه ای طی دوره 1392- 1385 مورد ارزیابی و آنالیز قرار می دهد .یکی از جنبه...

2016
Victor John M. Cantor

DEA is a non-parametric and linear programming based technique that attempts to maximize a decision making unit’s (DMUs) relative efficiency, expressed as a ratio of outputs to inputs, by comparing a particular unit’s efficiency with the performance of a group of similar DMUs that are delivering the same service. The traditional DEA models treat DMUs as black boxes whose internal structure is i...

2011
Adel Hatami-Marbini Madjid Tavana Ali Emrouznejad Saber Saati

Performance evaluation in conventional data envelopment analysis (DEA) requires crisp numerical values. However, the observed values of the input and output data in real-world problems are often imprecise or vague. These imprecise and vague data can be represented by linguistic terms characterised by fuzzy numbers in DEA to reflect the decision-makers' intuition and subjective judgements. This ...

Journal: :Journal of the South African Veterinary Association 2002
L L van der Merwe L S Jacobson G J Pretorius

The blood group antigen Dog Erythrocyte Antigen (DEA) 1.1 is clinically the most important canine blood group as DEA 1.1 antibodies are capable of causing acute haemolytic, potentially life-threatening transfusion reactions. Dogs do not have naturally occurring antibodies to DEA 1.1 but are rapidly sensitised by the first incompatible transfusion. The prevalence of DEA 1.1 in the general dog po...

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