نتایج جستجو برای: agrosilvopastoral systems
تعداد نتایج: 1183362 فیلتر نتایج به سال:
conclusions: the results of the present research indicates that the emphasis of the his evaluation moves from technical subjects to human and organizational subjects, and from objective to subjective issues. therefore, this issue entails more familiarity with more qualitative evaluation methods. in most of the reviewed studies, the main focus has been laid on the necessity of using multi-method...
since the late 1990s, different web-based submission and peer review systems have emerged, and significant numbers of journals have shifted from their old paper-based systems to the web-based ones. exploring the main features of these online systems might lead to better understand this flow. this study was performed to examine the features and capabilities of online submissions and peer review ...
background: primary health care is the major infrastructure of health care systems. it is clear that making and improving primary health care information systems would not be possible without awareness of their condition. therefore, this comparative study was conducted in order to determine the situation of primary health care information systems in health centers of tehran, iran. methods: this...
introduction: hospitals require a central monitoring and improve planning process in order to enhance patient care quality. regarding the current developments in health care systems, the question is which information system can support transformation of hospitals. this review article focuses on the capacity of enterprise resource planning (erp) systems for the transformation of hospitals. metho...
there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...
introduction: one of the software packages designed for libraries and documenting centres is unesco cds/isis mini-micro software package. most libraries in iran have a copy of it. this research was aimed to investigate the degree of its application in central libraries of medical sciences universities in 2004. methods and materials: it is a descriptive study in which a questionnaire was used to...
background systems thinking (st) has recently been promoted as an important approach to health systems strengthening. however, st is not common practice, particularly in low- and middle-income countries (lmics). this paper seeks to explore the barriers that may hinder its application in the eastern mediterranean region (emr) and possible strategies to mitigate them. methods a survey consistin...
in this article a graph theoretical approach is employed to study some specifications of dynamic systems with time delay in the inputs and states, such as structural controllability and observability. first, the zero and non-zero parameters of a proposed system have been determined, next the general structure of the system is presented by a graph which is constructed by non-zero parameters. the...
the aim of this paper is to analyze the undamped second order descriptor systems to show the possibility of transform an undamped second order descriptor system to a pure first order descriptor system ,on different ways, while stating some of its benefits. meanwhile we will introduce pure first order systems and undamped second order systems and indicate that under some assumptions every undamp...
this paper deals with leader-following and leaderless consensus problems of high-order multi-input/multi-output (mimo) multi-agent systems with unknown nonlinear dynamics in the presence of uncertain external disturbances. the agents may have different dynamics and communicate together under a directed graph. a distributed adaptive method is designed for both cases. the structures of the contro...
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