نتایج جستجو برای: makers is obviousduring last several decades

تعداد نتایج: 7489721  

High utility itemset mining (HUIM) is a new emerging field in data mining which has gained growing interest due to its various applications. The goal of this problem is to discover all itemsets whose utility exceeds minimum threshold. The basic HUIM problem does not consider length of itemsets in its utility measurement and utility values tend to become higher for itemsets containing more items...

Journal: :iranian journal of psychiatry and behavioral sciences 0
homayoun amini department of psychiatry, psychiatry and psychology research center, tehran university of medical sciences, tehran, iran

ïn the last two decades, the importance of developing strategies that reduce the burden of new onset psychosis on affected persons, their families, and the community has been recognized. this article reviews the literature on first-episode psychosis (fëp) in ïran. ïn the last decade, several studies on fëp have been published in tehran concerning duration of untreated psychosis (düp), pathways ...

Study of volatility has been considered by the academics and decision makers dur-ing two last decades. First since the volatility has been a risk criterion it has been used by many decision makers and activists in capital market. Over the years it has been of more importance because of the effect of volatility on economy and capital markets stability for stocks, bonds, and foreign exchange mark...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

chapter two presents three m-admissible function algebras ab, bd, and sl, to construct the universal abelian, band, and semilattice compactifications, respectively. the main results are (11.3), (12.3), and (12.4). some inclusion relationships between these function algebras and the other well-known ones, presented in section 8, are made via the devico of compactifications. chpter three is about...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق و کامپیوتر 1391

power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...

The main goal of this research is to identify the effective factors on tax evasion by fuzzy DEMATEL-method in Iran. At the present time tax evasion is one of the economic problems in developing countries. Our country has had in this problem for several decades. In this paper, we attempted to determine effective factors in tax evasion, and the relational structure of these factors is examined by...

Journal: :مجله علوم اعصاب شفای خاتم 0
ali gorji a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran. b. experimental research center, münster, germany.a. shefa neuroscience research center, tehran, iran. b. experimental research center, münster, germany.

several investigations demonstrated that anxiety is the most common mental health disorder worldwide affected about one in 13 people. anxiety disorders are more commonly reported in western societies but it is also a main health problem in non-western countries as stress and anxiety levels have drastically increased over the last two decades. several wars in middle eastern countries in the last...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1392

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

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