نتایج جستجو برای: social systems
تعداد نتایج: 1739909 فیلتر نتایج به سال:
Background & Aims: Social anxiety disorder is one of the most common anxiety disorders. Studying the etiology of this disorder is important. The aim of this study was to evaluate the role of BAS / BIS in social anxiety disorder by mediation effect of cognitive bias. Materials & Methods: 240 students of Tabriz University were selected by cluster sampling method and then responded to the ...
social capital has received considerable attention in all branches of social sciences, and has recently been the focus in the field to explain about procreator elements. trust is one of the social capital elements and plays an important role in specifying consequences incidental to social capital. nearly two decades ago, robert putnam proposed an explanation of trust relying on associational li...
Despite recent advancements in user-driven social media platforms, tools for studying user behavior patterns and motivations remain primitive. We highlight the voluntary nature of user contributions and that users can choose when (and when not) to contribute to the common media pool. A Game theoretic framework is proposed to study the dynamics of social media networks where contribution costs a...
The rapid growth of mobile phone technology and its combination with various technologies like GPS has added location context to social networks and has led to the formation of location-based social networks. In social networking sites, recommender systems are used to recommend points of interest (POIs) to users. Traditional recommender systems, such as film and book recommendations, have a lon...
abstract niklas luhmann was one of the prominent thinkers in the realm of sociology and the philosophy of social sciences. his approach was a systems approach. he classified the realm of reality and its entities into four groups that consisted of: machines, organisms, psychic systems, social systems. he belonged to the second wave of systemic thought and focused on the complexity and emergence ...
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تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...
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