نتایج جستجو برای: 2002 3there is another watershed modeling problem

تعداد نتایج: 7666666  

2016
Pravin V. Desai

The paper presents applications and models which are beneficial to watershed management in various areas. The intention is to inform about the current capabilities of soft computing, hydrologic analysis modules, and distributed hydrologic models, and to provide an initial guide on implementing soft computing. Watershed is not simply the hydrological unit but also socio-political-ecological enti...

Journal: :J. Log. Algebr. Program. 2006
Julia Padberg Hartmut Ehrig

Component-based software engineering needs to be backed by thorough formal concepts and modeling techniques. This paper combines two concepts introduced independently by the two authors in previous papers. On one hand, the concept of Petri net modules introduced at IDPT 2002 in Padberg (2002), and on the other hand a generic component framework for system modeling introduced at FASE 2002 in Ehr...

Abstract. One of the major problems in using wind energy is that wind-generated electricity is more unstable than electricity generated by other sources, and therefore integrating wind energy use with traditional power generation systems can be a challenge. This problem can be effectively reduced by having accurate information about the mean and wind speed volatilities. Therefore, in this paper...

Journal: :پژوهش های جغرافیای طبیعی 0
سمیرا اخوان استادیار گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا نسرین دلاور دانشجوی کارشناسی ارشد آبیاری و زهکشی، گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا

introduction daily weather information is currently available for about 40000 stations across the world. but, distribution of these stations is relatively uneven in some parts of the world. moreover, there are often large amounts of missing values (schuol andabbaspour, 2007: 301). using generated data can help fill missing or even to correct erroneously measured data (fodor et al., 2010: 91). l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

Journal: :Environment and Ecology Research 2022

Changes in land use the Alo Pohu watershed have concerned government preventing siltation of Limboto Lake, along with floods and slides. On that ground, present study was conducted to analyze spatial prediction land-use changes watershed, Gorontalo Regency, Indonesia, 2000-2017 period for 2030 prediction. The method analysis data predict involved Powersim Version 10 Idrisi apps. Further, consis...

Journal: :environmental resources research 2013
shahin moradi pour abdolreza bahremand hossein zeinivand ali najafinejad

water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. in this study simulation of water balance components in taleghan mountainous watershed is performed using the spatially distributed hydrological...

Herman Chernoff,

The usual calculation of the P-value for the classical problem of‎ ‎comparing probabilities is not always accurate‎. ‎This‎ ‎issue arose in the context of a legal dispute which depended on when‎ ‎some written material was written in a diary‎. ‎The problem raises‎ ‎some issues on the foundations of statistical inference.‎ 

Journal: :Information & Software Technology 2002
Emilio Insfrán Vicente Pelechano Oscar Pastor

Conceptual Modeling-based methods and their corresponding CASE tools have traditionally had one main weak point: the use of different notations for the problem space system view (centered on the what the system is) and the solution space view (centered on the how it is to be represented). The real value of Conceptual Modeling, from a pragmatic perspective, is lost due to these different notatio...

2005
Pipat Reungsang Ramesh S. Kanwar Manoj Jha Philip W. Gassman Khalil Ahmad Ali Saleh

A validation study has been performed using the Soil and Water Assessment Tool (SWAT) model with data collected for the Upper Maquoketa River Watershed (UMRW), which drains over 16,000 ha in northeast Iowa. This validation assessment builds on a previous study with nested modeling for the UMRW that required both the Agricultural Policy EXtender (APEX) model and SWAT. In the nested modeling appr...

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