this paper proposes an efficient tracking method for velocity control of an electro-hydraulic servo system (ehss) in the presence of flow nonlinearities and internal friction. the tracking method controller is a kind of feedback error learning structure. in the proposed method, the feedback error learning (fel) algorithm is used to control the velocity. there is no need to compute the system ja...

empowering employees in specialized and general qualifications fields is required for urban management organization (tehran municipality). planning and establishment of comprehensive system of electronic learning is considered the main goal of human resource and educational managers. . this study tried to investigate the feasibility and execution of electronic learning courses for in-service st...

nowadays, outsourcing is viewed as a trade strategy and organizations tend to adopt new strategies to achieve competitive advantages in the current world of business. focusing on main copmpetencies, and transferring most of activities to outside resources of organization( outsourcing) is one such strategy is. in this paper, we aim to decide on decision maker agent of transportation system, by a...

this research aimed to investigate the learning organization characteristics in environmental non-governmental organizations (engos) in tehran city using the watkins and marsick’s seven dimensional learning organization model. the research method was descriptive- correlation and used survey method. the population consisted of all active members on engos in tehran city.  using bartlett’s (2011) ...

the advent of computer has revolutionized a variety of fields including education thus paving the way for educational science to enter a new stage. this effect has exhibited itself well in language learning. the development of computer technology and the resulting language learning software, as a reliable tool in the educational system of developed countries, has attracted the attention of both...

considering the pace of scientific, technological and cultural developments, one will have no other choice but to learn over a lifetime. mobile learning as a new stage of e-learning development with the potential of using mobile devices, is supposed to be an effective means for lifelong learning. therefore, the purpose of this survey was to analyze the problems of agricultural education system ...

in this paper we have proposed an approach for emotion detection in implicit texts. we have introduced a combinational system based on three subsystems. each one analyzes input data from a different aspect and produces an emotion label as output. the first subsystem is a machine learning method. the second one is a statistical approach based on vector space model (vsm) and the last one is a key...