نتایج جستجو برای: data model

تعداد نتایج: 3968676  

Journal: :iranian economic review 2015
mohammad mowlaei abolghasm golkhandan

middle east is a strategic region because of its abundant oil reserves, hostile struggles among the countries, and threat of the radical groups. the countries of this region spend a large amount of their annual budgets on buying weapons and war armaments. the purpose of this paper is to study the impact of military expenditures on economic growth of oil and non-oil middle east countries by a dy...

Journal: :international journal of data envelopment analysis 0
akbar rahimipoor young researchers club and elite, sirjan branch, islamic azad university, sirjan, iran masomeh tadress hasani young researchers club and elite, sirjan branch, islamic azad university, sirjan, iran

recent bankruptcy of big companies all over the world and fluctuations in iran's stock market require that some methods be developed for the evaluation of companies' financial potential. different models are used for the prediction of bankruptcy and the evaluation of organizational financial situation. environmental changes and increasing competition among agencies led to companies&ap...

Journal: :international journal of data envelopment analysis 0
a. ghasemikia z. iravani

data envelopment analysis (dea) is a technique that uses all collected observations to measure performance. this method presents no data about how to operate on dmu. the present research attempted to study a unit with all its subunits, if the unit is efficient, it means that all its subunits are efficient too and if it is an inefficient, it shows clearly that which one of the subunits makes ine...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده زبانهای خارجی 1389

previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

Journal: :int. journal of mining & geo-engineering 2013
ali akbar hosseini faramarz doulati ardejani seyed hashem tabatabaie ardeshir hezarkhani

edge detection and edge enhancement techniques play an essential role in interpreting potential field data. this paper describes the application of various edge detection techniques to gravity data in order to delineate the edges of subsurface structures. the edge detection methods comprise analytic signal, total horizontal derivative (thdr), theta angle, tilt angle, hyperbolic of tilt angle (h...

Journal: :international journal of data envelopment analysis 0
n. ghasemi e. najafi h. shams

recently the concept of facility efficiency, which defined by data envelopment analysis (dea), introduced as a location modeling objective, that provides facilities location’s effect on their performance in serving demands. by combining the dea models with the location problem, two types of “efficiencies” are optimized: spatial efficiency which measured by finding the least cost location and al...

Journal: :international economics studies 0
kadir karagoz m.ozan saray

â â â â â â â â â â â â  abstract: â  as a result of recent developments, global economic centre of gravity has slide to asia-pacific region. it is predicted that asia-pacific countries will take place at the first row in global trade and nearly a half of the total trade will intensify in this region at the year 2030. on the other hand, the region covers countries from different levels of devel...

Journal: :medical journal of islamic republic of iran 0
nasim vahabi department of biostatistics, faculty of medical sciences, tarbiat modares university, tehran, iran.سازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) anoshirvan kazemnejad department of biostatistics, faculty of medical sciences, tarbiat modares university, tehran, iran.سازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) ramazan fallah department of biostatistics, faculty of medical sciences, tarbiat modares university, tehran, iran.سازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university)

background: growth failure in children less than five years old can lead to the serious complications such as increased mortality, learning difficulties or physical disability. the aim of this study was to investigate the non-organic factors affecting the growth trend in less than two years children living in zanjan, iran.   methods: this longitudinal study was conducted on a sample of 3566 chi...

Journal: :caspian journal of environmental sciences 2009
m. ajorlo h. ahmad husni mohd h. ridzwan abd

empirical models are important tools for relating field-measured biophysical variables to remotely sensed data. regression analysis has been a popular empirical method of linking these two types of data to estimate variables such as biomass, percent vegetation canopy cover, and bare soil. this study was conducted in a semi-arid rangeland ecosystem of qazvin province, iran. this paper presents t...

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