نتایج جستجو برای: ccr model

تعداد نتایج: 2107953  

Journal: :International Journal of Mathematics 2021

Extending a result of the first author and Katsura, we prove that for every UHF algebra [Formula: see text] infinite type, in uncountable cardinality there are nonisomorphic approximately matricial C*-algebras with same group as text]. These algebras “twisted” by prescribed canonical commutation relations (CCR), they can also be considered nonseparable generalizations noncommutative tori.

By using the Double Frontiers Criteria, Hurwicz succeeded to achieve The Most Productive Scale Size of decision making units. This Double frontiers criteria was achieved by using two models of “CCR” in optimistic viewpoint in input form and the “CCR” model in pessimistic viewpoint in input form. In this paper, we intend to find a criteria for Double frontiers of super efficiency by using two mo...

ژورنال: :چشم انداز مدیریت صنعتی 0
حسن فارسیجانی دانشگاه شهید بهشتی محمد حسین آرمان دانشگاه هرمزگان علیرضا حسین بیگی دانشگاه آزاد اسلامی، واحد نیریز اعظم جلیلی دانشگاه علامه طباطبایی

تحلیل پوششی داده ها (dea) یک تکنیک برنامه ریزی خطی است که هدف اصلی آن، مقایسه و ارزیابی کارایی تعدادی از واحدهای تصمیم گیرنده مشابه است که مقدار ورودی های مصرفی و خروجی های تولیدی متفاوتی دارند. مدل های dea مورد استفاده برای ارزیابی کارایی واحد تحت بررسی می توانند از دو رویکرد مجزا استفاده کنند: .1 کاهش میزان ورودی ها بدون تغییر در میزان خروجی ها )رویکرد ورودی محور( .2 افزایش میزان خروجی ها بدو...

2010
Doris Kehl Jochen R Thyrian Jan Lüdemann Matthias Nauck Ulrich John

BACKGROUND The aims of the present study were to examine relations between parents' self-reported smoking behavior and infants' daily exposure to environmental tobacco smoke, as assessed by urinary cotinine-to-creatinine ratio (CCR), and to describe the CCR over seven days among infants at home. METHODS A convenience sample of 27 households was drawn. Each household had to have at least one d...

2003
Philip Holman James H. Anderson

We consider the implementation of a Pfair scheduler on a symmetric multiprocessor (SMP) architecture. Although SMPs seem well-suited for Pfair scheduling, simulations presented herein suggest that bus contention resulting from the simultaneous scheduling of all processors can substantially degrade performance. To correct this problem, we propose a staggered model for Pfair scheduling under whic...

Journal: :Discrete Applied Mathematics 2007
Piotr Berman Bhaskar DasGupta Dhruv Mubayi Robert H. Sloan György Turán Yi Zhang

In this paper we investigate the inverse protein folding (IPF) problem under the Canonical model on 3D and 2D lattices [13, 26]. In this problem, we are given a contact graph G = (V,E) of a protein sequence that is embeddable in a 3D (respectively, 2D) lattice and an integer 1 ≤ K ≤ |V |. The goal is to find an induced subgraph of G of at most K vertices with the maximum number of edges. In thi...

Journal: :American Journal of Hypertension 2006

Journal: :ماشین های کشاورزی 0
مرتضی تاکی یحیی عجب شیرچی رضا عبدی محمد اکبرپور

in this research energy efficiency for greenhouse cucumber production in shahreza township located in esfahan province using data envelopment analysis (dea) technique was studied. in this study, data were obtained from 25 randomize active vegetable greenhouses from 60 greenhouses in shahreza township and villages environs. the results showed that the highest and lowest consumed energy were rela...

Fariba Najafzadeh Nazila Shahi Sahand Daneshvar

Data envelopment analysis (DEA) is a technique based on linear programming (LP) to measure the relative efficiency of homogeneous units by considering inputs and outputs. The lack of discrimination among efficient decision making units (DMUs) and unrealistic input-outputs weights have been known as the drawback of DEA. In this paper the new scheme based on a goal programming data envelopment an...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2010
Eelg-You Park Think-You Kim

Can creatinine clearance in children clear the indexing GFR with BSA from the charge of errors? We read with interest the article of Delanaye and colleagues stating that indexing glomerular filtration rate (GFR) with body surface area (BSA) required mathematical prerequisites to be satisfied, even though many studies reported they were not [1]. Although not the gold standard to measure GFR, cre...

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