نتایج جستجو برای: dea r

تعداد نتایج: 453922  

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2007
Mihai D Niculescu Renan Wu Zhong Guo Kerry Ann da Costa Steven H Zeisel

Diethanolamine (DEA) is a widely used ingredient in many consumer products and in a number of industrial applications. It has been previously reported that dermal administration of DEA to mice diminished hepatic stores of choline and altered brain development in the fetus. The aim of this study was to use mouse neural precursor cells in vitro to assess the mechanism underlying the effects of DE...

2014
Ali Ebrahimnejad Madjid Tavana

Keywords: Data envelopment analysis Target unit Undesirable output Multiple objective linear programming Minimax method a b s t r a c t Data Envelopment Analysis (DEA) is a mathematical programming technique for identifying efficient Decision Making Units (DMUs) with multiple inputs and multiple outputs. DEA provides a technical efficiency score for each DMU, a technical efficiency reference se...

Journal: : 2021

Amaç Demir eksikli?i anemisi (DEA) dünyada ve ülkemizde en s?k görülen hastal?kt?r etyolojisinde birçok neden yer almaktad?r. Çal??mam?z?n amac? DEA’ n?n Süleyman Demirel Üniversitesi T?p Fakültesi hastanesine ba?vuran hastalarda retrospektif olarak prevalans?n? etyolojisini ara?t?rmakt?r. Gereç Yöntem Çal??maya Nisan 2017 - Kas?m aras?nda ?ç Hastal?klar? poliklini?ine az tam kan say?m?, ferrit...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - پژوهشکده علوم پایه کاربردی 1391

یکی از عوامل موثر جدانشدنی مدیریت، ارزیابی عملکرد است که ضعفها و قوت ها را برای بهبود و اصلاح روندها قطعی می سازد. مراکز آموزش عالی به عنوان جزئی از نظام اداری در صورت اعمال روشهای صحیح ارزیابی می توانند به عنوان الگو به تربیت نیروی انسانی متخصص و کارامد بپردازند.در این راستا می توان با ترکیب دو تکنیک تحلیل پوششی داده ها و فرآیند تحلیل سلسله مراتبی و استفاده از نقاط قوت آن ها و مرتفع کردن کاستی...

2001
R. J. LITTEL G. F. VERSTEEG

The deprotonation kinetics of the DEA--C02 and the DIPA-COZ zwitterions have been studied in aqueous blends of an&es at 298 K. Amine mixtures investigated were: DEA-TEA, DEA-MDEA. DEL-DMMEA, DEA-DEMEA, DIPA-TEA, DIPA-MDEA, DIPA-DMME~ DIPA-DEMEA. FOG each blend the zwitterion deprotonation constant of the additonal base present in solution (i.e. the tertiary amine) was determined. The observed d...

Journal: :JORS 2012
Y.-T. Huang J.-J. Kao

Data envelopment analysis (DEA) is a method frequently used to evaluate relative firm performance. However, high values in a few indicators can lead to a company being regarded as ‘efficient’, despite valuing poorly in other essential indicators. The Inefficiency Countervailed DEA (IC-DEA) method is thus developed. The method first defines an inefficient frontier using the proposed Reverse DEA ...

2013
Antreas D. Athanassopoulos

This paper concentrates on methods for comparing activity units found relatively efficient by data envelopment analysis (DEA). The use of the basic DEA models does not provide direct information regarding the performance of such units. The paper provides a systematic framework of alternative ways for ranking DEA-efficient units. The framework contains criteria derived as by-products of the basi...

2013
Ozren Despić

Some specific geometric data envelopment analysis (DEA) models are well known to the researchers in DEA through so-called multiplicative or log-linear efficiency models. Valuable properties of these models were noted by several authors but the models still remain somewhat obscure and rarely used in practice. The purpose of this paper is to show from a mathematical perspective where the geometri...

2017
Fabris Kossoski Marcio T. do N. Varella

Nitroimidazoles are efficiently decomposed by low energy electrons. This process, known as dissociative electron attachment (DEA), is believed to account, at least partly, for the radiosensitizing bioactivity of nitroimidazoles [1,2]. Since the DEA reactions are typically initiated by the formation of transient negative ions, or resonances, obtaining the anion spectra of nitroimidazoles is a ke...

Journal: :Expert Syst. Appl. 2010
Gholam Reza Jahanshahloo F. Hosseinzadeh Lotfi M. Khanmohammadi M. Kazemimanesh V. Rezaie

Keywords: Data envelopment analysis (DEA) Common weights analysis (CWA) Ranking The ideal line The special line a b s t r a c t Conventional data envelopment analysis (DEA) assists decision makers in distinguishing between efficient and inefficient decision making units (DMUs) in a homogeneous group. However, DEA does not provide more information about the efficient DMUs. In this research, the ...

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