نتایج جستجو برای: grey analysis

تعداد نتایج: 2837880  

D. Darvishi, P. Babaei,

The purpose of this paper is describes the use of grey pridiction in linear programming problems. Some definitions and concepts of grey system theory are introduced and then, we introduced GM(1,1) and fractional order accumulation into grey model. Due to the fluctuation of prices and the lack of certainty data in the market, optimal production was calculated to optimize the profit from sales us...

Journal: :Expert Syst. Appl. 2012
Wen-Hsiang Wu Chin-Tsai Lin Kua-Hsin Peng Chiu-Chin Huang

Deng proposed grey clustering analysis (GCA) in 1987. Later, Jin presented a new method in 1993, called grey relational clustering (GRC) method that combined grey relational analysis with clustering. However, the GRC method cannot use a tree diagram to make appropriate classification decisions without re-computation. This study thus attempts to combine GRC and hierarchical clustering analysis. ...

Alparslan Gok, Sirma Zeynep, Olgun, Mehmet Onur, Palanci, Osman,

The Shapley value, one of the most common solution concepts of cooperative game theory is defined and axiomatically characterized in different game-theoretic models. Certainly, the Shapley value can be used in interesting sharing cost/reward problems in the Operations Research area such as connection, routing, scheduling, production and inventory situations. In this paper, we focus on the Shapl...

2011
Pei-Yu Hsieh Jane S. Tsay

This paper investigates the intonation development of an infant during the first year. Three stages include the goo stage (2-3 months), the canonical babbling stage (7-9 months), and the variegated babbling stage (10-12 months). Falling contour was found to be the most common intonation at the goo stage. Rising contour was found to be the dominant intonation both at the canonical babbling and t...

Journal: :international journal of information, security and systems management 2012
mohammad hassan kamfiroozi alireza aliahmadi meisam jafari eskandari

this paper applies a new multi attribute decision-making (madm) model to help companies for enterprise resource planning (erp) selection problem based on balanced score card method. this paper uses three-parameter interval grey numbers which is derived from grey theory (was proposed by j. deng). this numbers is used instead of linguistic variables. beside, a new weighting method that outcomes f...

2009
Lúcia Garrido Nicholas Furl Bogdan Draganski Nikolaus Weiskopf John Stevens Geoffrey Chern-Yee Tan Jon Driver Ray J. Dolan Bradley Duchaine

Individuals with developmental prosopagnosia exhibit severe and lasting difficulties in recognizing faces despite the absence of apparent brain abnormalities. We used voxel-based morphometry to investigate whether developmental prosopagnosics show subtle neuroanatomical differences from controls. An analysis based on segmentation of T1-weighted images from 17 developmental prosopagnosics and 18...

Journal: :American journal of nuclear medicine and molecular imaging 2015
Kerstin Heurling Christopher Buckley Rik Vandenberghe Koen Van Laere Mark Lubberink

The kinetic components of the β-amyloid ligand (18)F-flutemetamol binding in grey and white matter were investigated through spectral analysis, and a method developed for creation of parametric images separating grey and white matter uptake. Tracer uptake in grey and white matter and cerebellar cortex was analyzed through spectral analysis in six subjects, with (n=4) or without (n=2) apparent β...

Journal: :Biomedical and environmental sciences : BES 2006
Jun Liu Xing-Peng Chen

OBJECTIVE To study the relationship of remote sensing normalized differential vegetation index (NDVI) to Anopheles density and malaria incidence rate. METHODS Data of monthly average climate, environment, Anopheles density and malaria incidence rate, and remote sensing NDVI were collected from 27 townships of 10 counties in southeastern Yunnan Province from 1984 to 1993. The relationship of r...

Journal: :Psychiatry research 2015
Li Kong Christina J Herold Frank Zöllner David H Salat Marc M Lässer Lena A Schmid Iven Fellhauer Philipp A Thomann Marco Essig Lothar R Schad Kirk I Erickson Johannes Schröder

Grey matter volume and cortical thickness are the two most widely used measures for detecting grey matter morphometric changes in various diseases such as schizophrenia. However, these two measures only share partial overlapping regions in identifying morphometric changes. Few studies have investigated the contributions of the potential factors to the differences of grey matter volume and corti...

2013
HUAFENG XU

In this paper, grey system theory and DEA are combined to establish a grey DEA model. In traditional DEA model, Input and output values of decision-making groups are all real numbers and real variables. They are replaced by grey numbers and grey variables in grey DEA model respectively. Using positioning solution method of grey linear programming, we prove the necessary condition for grey effec...

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