Graph drawing software relies on a variety of mathematical results, mainly in graph theory , topology , and geometry , as well as computer science techniques, mainly in the areas algorithms and data structures, software engineering , and user interfaces. Many of the core techniques used in automatic graph drawing come from the intersection of mathematics and computer science in combinatorial an...

introduction: efficient use of information systems in provision of health services is very important for achieving efficiency, effectiveness and service quality. in this study the various aspects of clinical information systems implementation and estimate of one of main users' knowledge about these systems in hospitals was investigated. methods: this study was conducted in two-stages: in the fi...

in recent years, many security threats have entered into the organizations’ information and changed the  organizational performance resulting in their exorbitant costs. this question is of particular importanceabout government agencies that use information and internet systems. this issue enabled the top managers of organizations to implement a security system and minimize these costs. using in...

Owing to the rapid and unrelenting digitalization of business ecosystems, digital infrastructure—as a new information technology artifact to conceptualize and realize interconnected information system collectives—has drawn considerable attention in information systems research. Building on the extant body of knowledge, this study synthesizes and integrates existing discourses into a theoretical...

intelligent use of data and information in a large company for management decisions are the essential requirements of all managers. in addition, the necessity of paying attention to the environmental competitiveness increases the importance of responding to these needs. information systems and tools of it in recent decades have played a special role in increasing the respond to these demands. o...