نتایج جستجو برای: questions and new requirements
تعداد نتایج: 17143403 فیلتر نتایج به سال:
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
The TWINS project addresses industrial hardware-software co-design product development. In search for a multidisciplinary modeling solution, knowledge is required about the current practice of multidisciplinary development in industry. By analyzing user requirements, use cases, and applied tools and techniques of six industrial partners, this paper presents the current status of multidisciplina...
Requirements prioritization is recognized as an important activity in product development. In this paper, we describe the current state of requirements prioritization practices in two case companies and present the practical challenges involved. Our study showed that requirements prioritization is an ambiguous concept and current practices in the companies are informal. Requirements prioritizat...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Software requirements are defined in many industries using informal software requirements specifications that are based on standards such as IEEE 830. Also, in teams of small to medium-sized projects there are often no experienced requirements engineers. These two factors leave product development efforts in a tar pit of ambiguities and misunderstandings that is risking product success. We inve...
bekenstein and hawking by introducing temperature and every black hole has entropy and using the first law of thermodynamic for black holes showed that this entropy changes with the event horizon surface. bekenstein and hawking entropy equation is valid for the black holes obeying einstein general relativity theory. however, from one side einstein relativity in some cases fails to explain expe...
abstract this study aimed at investigating the effect of bilingual teaching of cognate words (persian-english) on iranian upper intermediate efl learners’ knowledge of lexical development. for this purpose,100 subjects participated in this study out of which 40 learners were selected for this study and they were assigned into two groups, control and experimental. cross-language cognates (wor...
Document-based management of requirements can be effective for single site, narrowly scoped projects. However, we firmly believe that it is essential to move to a database-centered way of managing requirements if platform-based product development and enterprise wide requirements management is to be fully supported. This paper introduces an approach to the specification of system families that ...
The automotive industry is facing a tremendous growth in the engineering of software-intensive systems, giving rise to various challenges. To prevent problems related to the fit of new software technologies in vehicles and the manufacturing processes, a well functioning interaction between the functions for product development and manufacturing is crucial. This is complicated by the fact that t...
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