نتایج جستجو برای: and information
تعداد نتایج: 16904639 فیلتر نتایج به سال:
معادلات انتگرال دیفرانسیل در مدل بندی مسائلی کاربردی چون انتقال گرما، پدیده انتشار و پخش نوترون مورد استفاده قرار می گیرند و نیز در برخی کاربردهای فیزیک و زیست شناسی و مهندسی استفاده وافر دارند و به تبع آن معادلات انتگرال دیفرانسیل فازی نیز مورد توجه قرار گرفته اند. معادله انتگرال دیفرانسیل غیر خطی زیر را در نظر می گیریم. در صورتی که توابع معلوم a(t)و k(t,s,x(t)) و f(t,x(t)) توابعی ف...
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the two terms information and communication have some ambiguities. yet, there is not a consensus on their definitions. but they have some common characteristics, which make them be used interchangeably, information is the basic element for communication. information, inevitably. does net end to communication while when there is communication, there is information 100. communication is the natur...
information organization (i.e., cataloging, classification, abstracting and indexing) is a crucial service in libraries and information centers. modern and standard practices in this regard started around 1960s in iran. this paper outlines the development of modern practices in information organization in iran. it illustrates how iranian libraries and information centers implement standard prac...
Agriculture is the backbone of India’s economy as two-third of the population live in rural areas and directly or indirectly depend on agriculture for their livelihood. India’s food production has improved significantly during the last three decades due to all-round efforts but Indian agriculture is still facing a multitude of problems to maximize productivity to feed the continuously increasin...
Background and Aim: This paper reviews the two major concepts in the field of information behavior (IB), namely "information" and "information seeking." Method: Adocumentary research method and review of the literature were used. Results: The word information is the smallest particle and the most essential element in the area of information behavior. The second one is the phrase "information be...
this study determines the impact of e-commerce (ec) on some of important economic criteria including total factor productivity( tfp) of iran country as a developing country in comparison with us standard as a developed country through analyzing and calculating interrelated issues. the model is based on both econometrics and growth accounting approach to fill the gaps of previous studies. on the...
ABSTRACT The aim of this study was to evaluate the status of information on forest and data transfer and to identify the gaps in information and data flow in forestry sector in Iran. The study evaluated the data and information flow in three levels (control offices level, provincial offices level and organizational offices level) using the document analysis and questioning (interviews and ques...
this research was conducted based on survey strategy with purpose of investigating the information seeking behavior patterns of tomato growers in badouleh district. validity of questionnaire as data gathering instrument, confirmed by selected experts and coronbach alpha coefficient (equal to 0.68 – 0.75 range for deferent parts of questionnaire) used to confirm its reliability. the population o...
evaluation criteria for different versions of the same database the concept of information, during its development, is connected to the concept of entropy created by the 19th century termodynamics scholars. information means, in this view point, order or negentropy. on the other hand, entropy is connected to the concepts as chaos and noise, which cause, in turn, disorder. in the present paper, ...
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