نتایج جستجو برای: grey system

تعداد نتایج: 2246972  

The production planning is an important problem in most of manufacturing systems in practice. Unlike many researches existing in literature, this problem encounters with great uncertainties in parameters and input data. In this paper, a single machine capacitated production planning problem is considered and a linear programming formulation is presented. The production costs are assumed to be u...

Journal: :Expert Syst. Appl. 2015
Baishang Zhang Xiangyang Li Shiying Wang

Case adaptation is a challenging and crucial process of Case-Based Reasoning (CBR) for power grid wind disaster emergencies. The statistical adaptation method is a traditional method that is independent of domain knowledge, is easy to implement, but is not proper for the complex system problem. Therefore, the aim of this paper is to propose a novel case adaptation method to address this problem...

Journal: :Information & Management 2015
Jahyun Goo C. Derrick Huang Chulmo Koo

Electronic Medical Record (EMR) systems have been a focus of the healthcare sector and have seen significant deployment around the world in recent years. Despite high expectations and widespread use, the outcomes of EMR have been mixed. In this study, we attempt to understand the dynamics of EMR adoption in the hospital environment through the lens of organizational learning. We find that while...

2015
Hsi-che Teng Ying-fang Huang

This study empirically analyzes model accuracy, and applies grey forecasting to handle non-linear problems, insufficient data resources and forecasting involving small samples, and to construct the co-opetition diffusion model for the Lotka–Volterra (L.V.) system. Furthermore, this study examines historical data comprising revenue trends in the Taiwanese IC assembly industry during the past ten...

ژورنال: علوم آب و خاک 2009
رستگار, فاطمه, صبوحی, محمود,

In the present study, grey fuzzy programming model was used for determination of cropping pattern in central part of Quchan city. The needed data was collected from Almachigh Research Center for the year 2008. Result showed that, current cultivated area of irrigated wheat, irrigated barley and alfalfa is more than and rain-fed barley is less than the represented interval upper and lower limits,...

Today there is consensus regarding the importance of predicting the price of energy carriers for economic development, including natural gas as a preferred energy source on environmental grounds. In this paper we analyze the nonlinear behavior of natural gas prices over time by use of the Grey Method (GM), Developed Grey Method (DGM), Fractal Discrete Grey Method (FDGM) and a compound Method II...

Journal: :basic and clinical neuroscience 0
narges a.niknam mahnaz azarnia hossein bahadoran masoomeh kazemi elaheh tekieh mina ranjbaran

introduction: in the present research, the effect of morphine consumption during pregnancy on the development of the embryo’s spinal cord was studied in wistar rat. methods: female wistar rats (wt: 250-300 g) were mated with males. the test group received morphine (0.01 mg/ml) in their drinking water. pregnant rats were later killed with chloroform on the 12th, 13th and 14th days of pregnancy, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده حقوق و علوم سیاسی 1390

چکیده : نظام انتخاباتی قواعد و چار چوب های به رسمیت شناخته شده ای است که بیانگر چگونگی تبدیل آرای مردم به مناصب و پست های سیاسی است. این نظام انتخابات باید به گونه ای عمل کند که نتیجه آن فراهم شدن مکانیسم و ساز و کار مطلوب و مناسب برای برگزاری انتخابات سالم و رقابتی باشد. به نظر می رسد نظام انتخاباتی جمهوری اسلامی ایران دارای ضعف ها و نواقصی است که به سبب آن ها نمی توان انتخابات مطلوب را برگزا...

Journal: :PLoS ONE 2008
Martin Hromada Marcin Antczak Thomas J. Valone Piotr Tryjanowski

Animals often settle near competitors, a behavior known as social attraction, which belies standard habitat selection theory. Two hypotheses account for these observations: individuals obtain Allee benefits mediated by the physical presence of a competitor, or they use successfully settled individual as a source of information indicating the location of high quality habitat. We evaluated these ...

Journal: :مدیریت صنعتی 0
عالیه کاظمی استادیار گروه مدیریت صنعتی، دانشکده مدیریت، دانشگاه تهران، ایران محمد مدرس استاد دانشکده مهندسی صنایع دانشگاه صنعتی شریف، تهران، ایران محمدرضا مهرگان دانشیار گروه مدیریت صنعتی، دانشکده مدیریت، دانشگاه

the aim of this paper is to present the prediction model of the transport energy demand in iran. markov chain grey model (mcgm) is proposed to forecast the transport energy demand of iran. then it is compared with grey model (gm) and regression model. moreover, the mcgm forecasting model is used to forecast the annual gasoline demand of iran up to the year 1400. the aim of this paper is to pres...

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