in this thesis, a structured hierarchical methodology based on petri nets is used to introduce a task model for a soccer goalkeeper robot. in real or robot soccer, goalkeeper is an important element which has a key role and challenging features in the game. goalkeeper aims at defending goal from scoring goals by opponent team, actually to prevent the goal from the opponent player’s attacks. thi...

learning english is very popular all over the world nowadays and it is considered a high prestigious language among citizens of different societies. one of the most important materials for learning a new language are textbooks. the debate that whether learning a new language is natural and neutral or ideological and influential on people’s worldviews, has always been of great importance.

Introduction: The nursing process is a scientific and purposeful method that its use leads to coordination in the provision of services and allows nurses to use critical thinking for their clinical judgments and care activities. This study aimed to investigate the barriers to the implementation of the nursing process from the perspective of nurses working in Ardabil and Khalkhal University Hosp...

Introduction: Evidence-based health care provides up to date and cost-effective strategies and procedures. Hence, it plays an important role in the quality promotion of nursing care. Despite these benefits, there are barriers to its implementation which must be investigated. Therefore, this study is an endeavor to investigate barriers to implement evidence-based care among nursing staff. Meth...

employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

Abstract Introduction: Patient education is one of the important aspects of nursing care and is among nursing key roles in delivery of health services. Objective: This study aimed to determine the barriers to patient education from nurses' viewpoint employed in educational hospitals affiliated to Shahid Sadoughi University of Medical Sciences in Yazd. Methods: This study was a cross-...