نتایج جستجو برای: meteorological parameters such as wind speed

تعداد نتایج: 6356657  

Journal: :Computational Statistics & Data Analysis 2012
Massimiliano Caporin Juliusz Pres

The modelling of wind speed is a traditional topic in meteorological research, where the main interest is on the short-term forecast of wind speed intensity and direction. More recently, this theme has received some interest in the quantitative finance literature for its relationship with electricity production by wind farms. In fact, electricity producers are interested in long-range forecasts...

Journal: :The Science of the total environment 2002
C Dueñas M C Fernández S Cañete J Carretero E Liger

Ozone concentrations are valuable indicators of possible health and environmental impacts. However, they are also used to monitor changes and trends in the sources of both ozone and its precursors. For this purpose, the influence of meteorological variables is a confusing factor. This study presents an analysis of a year of ozone concentrations measured in a coastal Spanish city. Firstly, the a...

Journal: :محیط شناسی 0
مجید حجتی دانشجوی سنجش از دور دانشگاه تهران علی درویشی بلورانی uni. of tehran, faculty of geography, dep. of rs & gis کاظم علوی پناه uni. of tehran, faculty of geography, dep. of rs & gis مجید کیاورز uni. of tehran, faculty of geography, dep. of rs & gis جواد بداغ جمالی uni. of tehran, faculty of geography, dep. of rs & gis

abstract particular matters which are referred as pm contents in air are one of the main indexes in air pollution studies. pms are consisted of water, solid particles with aerodynamic radius less than 10 micrometer or less than 2.5 micrometer. the main aim of this study is to find possibility of the usage of modis images for estimation of pm10 concentration of dust storms. to achieve this goal ...

2016
Xiangdong Xu Xi Song Qian Wang Zhiyuan Liu Jing Wang Zhiru Li

Wind energy has been part of the fastest growing renewable energy sources that is clean and pollution-free, which has been increasingly gaining global attention, and wind speed forecasting plays a vital role in the wind energy field, however, it has been proven to be a challenging task owing to the effect of various meteorological factors. This paper proposes a hybrid forecasting model, which c...

2014
Li Ma Bo Li Zhen Bin Yang Jie Du Jin Wang

The prediction of wind farm output power is considered as an effective way to increase the wind power capacity and improve the safety and economy of power system. It is one of the hot research topics on wind power. The wind farm output power is related to many factors such as wind speed, temperature, etc., which is difficult to be described by some mathematical expression. In this paper, Back P...

Journal: :Soft Comput. 2011
Sue Ellen Haupt Randy L. Haupt George S. Young

There are many problems in security and defense that require a robust optimization technique, including those that involve the release of a chemical or biological contaminant. Our problem, in particular, is computing the parameters to be used in modeling atmospheric transport and dispersion given field sensor measurements of contaminant concentration. This paper discusses using a genetic algori...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

Journal: :International Journal of Intelligent Systems and Applications in Engineering 2018

2007
K. Srinivasa Raju Nagesh Kumar

The present study deals with the application of cluster analysis, Fuzzy Cluster Analysis (FCA) and Kohonen Artificial Neural Networks (KANN) methods for classification of 159 meteorological stations in India into meteorologically homogeneous groups. Eight parameters, namely latitude, longitude, elevation, average temperature, humidity, wind speed, sunshine hours and solar radiation, are conside...

Journal: :Journal of radiological protection : official journal of the Society for Radiological Protection 2009
M W Chege I V S Rathore S C Chhabra A O Mustapha

The effects of outdoor temperature, rainfall and wind speed on the indoor radon concentration in four types of traditional hut in Kenya were investigated by performing short-term (about 48 h) measurements with activated charcoal canisters. The concentrations vary widely (30.2-315.4 Bq m(-3)) during the study period, and the overall mean is 170.3 +/- 39.6 Bq m(-3). The indoor radon concentration...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید