نتایج جستجو برای: five statistical indices including model efficiency ef

تعداد نتایج: 3749850  

Introduction: Gail model is one of the most important models for the evaluation of breast cancer risk between US white females. According to genetic diversity, there is a possibility of affecting the efficiency of the Gail model in risk assessment of breast cancer among Iranian populations. In this study, the Gail model efficiency in specifying the risk of breast cancer in Iranian population wa...

Introduction: Gail model is one of the most important models for the evaluation of breast cancer risk between US white females. According to genetic diversity, there is a possibility of affecting the efficiency of the Gail model in risk assessment of breast cancer among Iranian populations. In this study, the Gail model efficiency in specifying the risk of breast cancer in Iranian population wa...

Journal: :European Journal of Operational Research 2015
Yan Chen Xuancheng Wang

This paper describes a hybrid stock trading system based on Genetic Network Programming (GNP) and Mean Conditional Value-at-Risk Model (GNP–CVaR). The proposed method, combining the advantages of evolutionary algorithms and statistical model, has provided useful tools to construct portfolios and generate effective stock trading strategies for investors with different risk-attitudes. Simulation ...

Journal: :علوم گیاهان زراعی ایران 0
علیجان بافکار دانشجوی دکتری گروه مهندسی آب دانشگاه شهید چمران اهواز سعید برومند نسب استاد گروه مهندسی آب دانشگاه شهید چمران اهواز مجید بهزاد استاد گروه مهندسی آب دانشگاه شهید چمران اهواز بهمن فرهادی بانسوله استادیار گروه مهندسی آب دانشگاه رازی، کرمانشاه

wofost is a crop growth simulation model which can simulate crop growth and yield components of annual crops dynamically in the various stages of growth period. some parts of the model outputs (crop yield and crop water requirements) can be used in irrigation planning and management of water resources. in this study, a field research was carried out in a randomized complete block design with th...

Journal: :international journal of industrial engineering and productional research- 0
mahdi karbasian mohammad farahmand mohammad ziaei

this research aims at presenting a consolidated model of data envelopment analysis (dea) technique and value engineering to select the best manufacturing methods for gate valve covers and ranking the methods using topsis.to do so, efficiency evaluation indices were selected based on the value engineering approach and different manufacturing methods were evaluated using dea technique.finally, ef...

Journal: :Entropy 2018
Jianyu Zhao Shengkui Zeng Jianbin Guo Shaohua Du

To optimize contributions of uncertain input variables on the statistical parameter of given model, e.g., reliability, global reliability sensitivity analysis (GRSA) provides an appropriate tool to quantify the effects. However, it may be difficult to calculate global reliability sensitivity indices compared with the traditional global sensitivity indices of model output, because statistical pa...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Urban and industrial development has increased concentration of heavy metals in the environment. The goal of this study was to assess the impact of Kerman steel complex on their surrounding soil by heavy metals. Materials and Methods: This study was a snapshot and its type was descriptive-analytical research. Heavy metals contents from 60 soil samples (top soil, 0-1...

Journal: :علوم گیاهان زراعی ایران 0
مریم ابراهیمیان دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، دانشگاه صنعتی اصفهان محمدمهدی مجیدی دانشیار دانشگاه صنعتی اصفهان آقافخر میرلوحی دانشیار دانشگاه صنعتی اصفهان الناز احمدی شاد دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

breeding based on selection indices is an effective method for improving complex traits such as yield. to assess the efficiency of different selection methods, 50 genotypes of tall fescue (festuca arundinace) were evaluated under two moisture conditions including full irrigation (normal environment) and deficit irrigation (stress environment). the experiment was conducted according to a randomi...

ژورنال: علوم آب و خاک 2004
محمدتقی آساد, , محمد مدرسی, , منوچهر خردنام, ,

Yield is a quantitative trait and improving grain yield through direct selection is time-consuming. Indirect selection consisting of selection indices is more promising. A field experiment was conducted during 1999-2000 growing season in two experimental locations (Kooshkak and Badjgah) of College of Agriculture, Shiraz University, Shiraz. Thirteen corn hybrids were used in a randomized complet...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد مرودشت - دانشکده علوم 1393

در مطالعه عمیق روی توزیع زاویه ای پاره های شکافت در واکنش یون سنگین ناهمسانگردی های زیادی دیده شده است. این ناهمسانگردی ها را می توان توسط نظریه استاندارد آماری (tsm)(transition statistical state model) توضیح داد.46علت وجود این ناهمسانگردی ها را می توان به اسپین بالا یا z2/a هسته شکافت پذیر نسبت داد1. برای ناهمسانگردیهای بیشترمی -توان از مدل آماری انقطاع (ssm)استفاده کرد. در این مدل توزیع تصویر...

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