نتایج جستجو برای: cooperative

تعداد نتایج: 68128  

In this paper, a more realistic cognitive radio network is proposed which considers several secondary links, some secondary relays, and one primary link. In the network, there are two steps of transmission from secondary sources to secondary destinations. At the first step, when primary link is idle, all of the secondary sources simultaneously broadcast their information to the relays. At the s...

Today’s world witnesses the constructively influential role of cooperatives in the socioeconomic areas, especially in the societies that enjoy more structurally organized cooperatives. Given the fact that there exists a direct relationship between cooperative’s economic performance and its success or failure, it would prove critical and logical to formulate a model to monitor the performanc...

While the advantages of cooperative learning activities have been extensively acknowledged in L2 literature, this type of pedagogy has not received due attention in the Iranian EFL context. Indeed, the traditional reading method still dominates in most Iranian EFL university classes even though it fails to meet its main objective which is training competent EFL readers. In an attempt to address...

تمرتاش, رضا, طاطیان, محمدرضا, قربانعلی نژاد, جابر,

  Cooperative company is an economic social organization that formed for gatherings of the people freely and voluntarily, in order to create jobs in specific fields to achieve the common goals of the members. Cooperation will banish trafficking and exploitation of persons and its main objective is entrepreneurship, collection of human and moral values ​​with economic objectives. In the fie...

Speaking is deemed by many scholars as a fundamental skill in second language (L2) learning. From the myriad of factors playing a role in willingness to communicate (WTC) in a foreign language, communication apprehension and self-perceived competence have attracted a good deal of interest in recent decades. Furthermore, it is generally agreed that cooperative teaching can enhance learners' ling...

Speaking is deemed by many scholars as a fundamental skill in second language (L2) learning. From the myriad of factors playing a role in willingness to communicate (WTC) in a foreign language, communication apprehension and self-perceived competence have attracted a good deal of interest in recent decades. Furthermore, it is generally agreed that cooperative teaching can enhance learners' ling...

This paper investigates the problem of controlling a team of Quadrotors that cooperatively transport a common payload. The main contribution of this study is to propose a cooperative control algorithm based on a decentralized algorithm. This strategy is comprised of two main steps: the first one is calculating the basic control vectors for each Quadrotor using Moore–Penrose theory aiming at coo...

امیر مظفر امینی, , مسعود رمضانی, ,

The general goal of this research was to study the effective factors on the success of the poultry-farm cooperatives in Isfahan province. Based on multi-stage cluster sampling and Chocran formulas, nine cooperatives and 173 members were selected from 15 cooperatives with 1768 members. After completion of questionnaires, the AHP method was employed for scaling. Statistical tests (factor analysis...

Large projects often have several activities which are performed by some subcontractors with several skills. Costs and time reduction and quality improvement of the project are very important for client and subcontractors. Therefore, in real large projects, subcontractors join together and form coalitions for improving the project profit. A key question is how an extra profit of cooperation amo...

2012

Cooperative communication has received tremendous interest for wireless networks. Most existing works on cooperative communications are focused on link-level physical layer issues. Consequently, the impacts of cooperative communications on network-level upper layer issues, such as topology control, routing and network capacity, are largely ignored. In this article, we propose a Capacity-Optimiz...

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