نتایج جستجو برای: several multi

تعداد نتایج: 1280252  

Journal: :international journal of environmental research 2010
a. sadeghi-niaraki k. kim m. varshosaz

this paper addresses a multi-criteria decision based methodology to develop a road network cost function for route finding analysis in a geographic information system (gis). over the years, several studies relating to route planning process in gis and intelligent transportation systems (its) have been conducted, most of which rely on the use of one-dimensional variables like distance or time as...

Journal: :Applied sciences 2021

Combined with other signal processing methods, related algorithms are widely used in the diagnosis and identification of rotor faults. In order to solve problem that vibration a single sensor is too single, new multi-source fusion method proposed. This explores correlation between sensors at different locations by using multiple cross-correlations spatial locations. First, wavelet noise reducti...

Distributed energy resources (DERs) including distributed generators (DGs) and controllable loads (CLs) are managed in the form of several microgrids (MGs) in active distributions networks (ADNs) to meet the demand locally. On the other hand, some loads of distribution networks (DNs) can be supplied by retailers which participate in wholesale energy markets. Therefore, there are several decisio...

Journal: :مدیریت صنعتی 0
مجید هوشمندی ماهر دانش آموخته دکتری مدیریت تولید و عملیات، دانشکده مدیریت و حسابداری دانشگاه علامه طباطبایی، تهران، ایران مقصود امیری دانشیار گروه مدیریت صنعتی، دانشکدة مدیریت و حسابداری دانشگاه علامه طباطبایی؛ لعیا الفت دانشیار گروه مدیریت صنعتی، دانشکده مدیریت و حسابداری دانشگاه علامه طباطبایی

abstract: in most industries the cost of raw materials and component parts constitutes almost 60% percent of cost of a product (in some industries up to 80%). in this situation, proper sourcing can play a key role in an organization's efficiency and effectiveness, because it has a direct effect on cost reduction, profitability and flexibility of a company. in this paper, determining the op...

Journal: :Journal of the American Geriatrics Society 2010
Kenneth E Covinsky Kristine Yaffe Karla Lindquist Elena Cherkasova Edward Yelin Dan G Blazer

OBJECTIVES To determine whether middle-aged persons with depressive symptoms are at higher risk for developing activity of daily living (ADL) and mobility limitations as they advance into older age than those without. DESIGN Prospective cohort study. SETTING The Health and Retirement Study (HRS), a nationally representative sample of people aged 50 to 61. PARTICIPANTS Seven thousand two h...

ژورنال: :مرتع و آبخیزداری 2012
پژمان طهماسبی عطاالله ابراهیمی نبی الله یارعلی

proper judgement on rangeland state needs appropriate sampling plan and accurately estimation of plant characteristics. sample shape and size are critical issues in vegetation measurement. thus, decision on appropriate quadrate shape that enables us to determine several parameters accurately and timely would increase sampling efficiency. several criterias including accuracy, perimeter/area rati...

Journal: :journal of advances in computer research 0

extensive researches on wireless sensor networks (wsns) have been performed and many techniques have been developed for the data link (mac) layer. most of them assume single-channel mac protocols. in the usual dense deployment of the sensor networks, single-channel mac protocols may be deficient because of radio collisions and limited bandwidth. hence, using multiple channels can significantly ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید