نتایج جستجو برای: livak method
تعداد نتایج: 1630094 فیلتر نتایج به سال:
در میان پدیده های فیزیکی موجود در انتقال حرارت، کوره های صنعتی و محفظه های احتراق با هندسه های گوناگون از اهمیت ویژه ای برخوردار می باشند. انتقال حرارت تشعشعی در این گونه از مسائل سهم قابل توجهی از میزان انتقال حرارت کلی را به خود اختصاص می دهد. یافتن جواب تحلیلی دقیق برای معادله انتگرودیفرانسیلی انتقال حرارت تشعشعی بسیار مشکل می باشد. برای مدل سازی فرآیند انتقال حرارت تشعشعی در یک محیط مشارکتی...
In this paper we discuss the need to integrate formal metamodels with an informal method rationale. Like design rationale method rationale establishes a systematic and organized trace of method specifications and their maintenance, and maintains knowledge of the method use context and its history. The need for method rationale is based on our observations of the role of method knowledge in soft...
some new water-soluble schiff base complexes of na2[m(5-so3-1,2-salophen)].nh2o; (5-so3-1,2-salophen = n,n’-bis(5-sulphosalicyliden)-1,2-phenylendiamine); na2[m(5-so3-2,3-salpyr)(h2o)n].2h2o; (5-so3-2,3-salpyr = n,n’-bis(5-sulphosalicyliden)-2,3-diaminopyridine); and na2[m(5-so3-3,4-salbenz)(h2o)n].nh2o; (5-so3-3,4-salbenz = n,n’-bis(5-sulphosalicyliden)-3,4-diaminobenzophenon); where m = cu, n...
تاثیر آموزش تفکر انتقادی به شیوه مباحثه بر روی مهارت درک متن یادگیرندگان انگلیسی به عنوان زبان خارجی
the purpose of the present study was to investigate the effect of instruction through debate on male and female efl learners’ reading comprehension, to examine the differences between the performance of male and female participants on the five dimensions of cctst including analysis, evaluation, inference, deductive reasoning, and inductive reasoning, and to examine the differences between male ...
چکیده هدف اصلی این پژوهش تعیین رابطه استراتژیهای خود رهبری و خلاقیت اعضای هیات علمی دانشگاه علم و صنعت بوده است. در این پژوهش از روش توصیفی از نوع همبستگی استفاده شده است. جامعه آماری پژوهش کلیه اعضای هیات علمی دانشگاه علم و صنعت در سال تحصیلی 88-1387 بود که بالغ بر345 نفربودندو از این تعداد، 119 نفر استاد با استفاده از روش نمونه گیری تصادفی طبقه ای متناسب با حجم انتخاب شد. ابزار جمع آوری داده...
In this paper a method is presented in details to solve a nonlinear partial differential equation which has many applications in engineering fields. The boundary condition is mixed to be able to define the value of function on its variation on the boundary. Examples are given to demonstrate the accuracy and efficiency of the method.
abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...
iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
In this paper we introduce a formal approach to architectural design patterns based on an object-oriented model integrated with a process-oriented method for describing the patterns. The object-oriented model is based on the Abstract Data View (ADV) concept, which is a formal model for subjectivity in that it explicitly distinguishes between two kinds of objects, namely application objects and ...
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