نتایج جستجو برای: geo mesh reinforcement
تعداد نتایج: 99238 فیلتر نتایج به سال:
در این پایان نامه به مدل صف geo/geo/1 با تعطیلی چندگانه ی همراه با کار و سرویس گروهی می پردازیم. نخست، در فصل اول کلیات و مفاهیم پایه بیان می شوند. سپس، این مدل صف در فصل دوم با فرض ورودهای اول وقت و در فصل سوم با فرض ورودهای با تاخیر تحلیل می شود. هدف از این تحلیل، یافتن احتمال های اندازه ی سامانه، میانگین طول صف و میانگین زمان انتظار در صف است. در فصل چهارم، با بیان دو مثال عددی تا...
In this research work, samples of the biocomposite were manufactured using vacuum assisted resin transfer molding (VARTM) technique, whose matrix is a polyester and reinforcement biaxial fabric (90°) made with jute fiber. Then, tensile flexural tests carried out on standardized specimens under ASTM standards, in order to mechanically characterize jute-polyester biocomposite. both destructive te...
The reinforcement of 3D printed concrete elements has proven to be a significant challenge that needs addressed. However, before can applied, the behaviour consequent composite materials must first studied. This study, therefore, investigates macromechanical AR glass fibre textile material as in terms its flexural performance, determine whether it is feasible solution. During this elements, con...
in this paper an adaptive pid controller for wind energy conversion systems (wecs) has been developed. theadaptation technique applied to this controller is based on reinforcement learning (rl) theory. nonlinearcharacteristics of wind variations as plant input, wind turbine structure and generator operational behaviordemand for high quality adaptive controller to ensure both robust stability an...
In the last 30 years, China’s economic power has experienced great changes and has brought about a profound impact on the world economy. This led us to ask a question: do changes in China’s economic power shift the geo-economic relationships between China and its neighboring countries? To answer this question, we researched the evolution of geo-economic relationships between China and the Assoc...
Geographic information services (geo-services) are gaining popularity as an efficient and costeffective framework for integrating geo-information systems, within and between enterprises, to enhance enterprise business processes. Geo-services can be chained dynamically to create customised geo-information and value-added services and therefore offer a business opportunity for disparate partners ...
From the perspective of spatial information sharing and interoperation, the concept of geo-ontology has been proposed in this paper. At first, a brief introduction to the Geo-Ontology concept has been described and the hierarchical structure of geo-ontology has also been analyzed. Then, the traditional method of ontology construction has been discussed and the existing problems have also been s...
در این پایان نامه، سوکسین ایمید-n- سولفونیک اسید (susa)، تهیه شده از واکنش سوکسین ایمید با کلروسولفونیک اسید و پلی(4- وینیل پیریدین) (pvp) با 2% اتصال عرضی دی وینیل بنزن [60 mesh، 2% (dvb)، pvp] که به صورت تجاری از شرکت فلوکا در دستر س است، به عنوان دو کاتالیزگر جدید، ملایم، موثر و قابل بازیافت برای تسریع برخی واکنش های آلی معرفی شده اند.
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