نتایج جستجو برای: nsfd method
تعداد نتایج: 1630126 فیلتر نتایج به سال:
عمل گرهای مشتق و انتگرال کسری مفهوم جدیدی از مشتق و انتگرال از مرتبۀ دل خواه است. معادلۀ دیفرانسیل با مشتقات نسبی )[1](pde که مشتقات موجود در آن بتوانند از مرتبه کسری باشند معادلۀ دیفرانسیل با مشتقات نسبی کسری ([2](fpde گفته می شود. امروزه این معادلات به دلیل کاربرد زیاد توجه ویژه ای را به خود معطوف داشته اند. در این مقاله حالت نسبتاً کلی از یک fpde مطرح می شود، برای به دست آوردن طرحی عددی، مشتق...
today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...
abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...
Many researchers currently seek to combine the predictability of real-time systems with the intelligence of AI planning systems. We develop a framework for describing various approaches to this problem, by distinguishing strategic and tactical methods for meeting real-time performance guarantees. We introduce the any-dimension algorithm concept to clarify the fundamental connict between real-ti...
We propose a general framework for obtaining asymptotic distributional bounds on the stationary backlogW12 in a bu er fed by a combined uid process A1+A2 and drained at a constant rate c. The uid process A1 is an (independent) on-o source with average and peak rates 1 and r1, respectively, and with distribution G for the activity periods. The uid process A2 of average rate 2 is arbitrary but in...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
Cases of COVID-19 and its variant omicron are raised all across the world. The most lethal form effect version, which has been reported in tens thousands cases daily numerous nations. Following WHO (World health organization) records on 30 December 2021, were found to be maximum for boarding individuals 1,524,266, active, recovered, discharge 82,402 34,258,778, respectively. While there 160,989...
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...
As intelligent autonomous systems are embedded in critical real world environments it becomes increasingly important to rigorously characterize how these systems will perform Research in real time computing and control has developed ways of proving that a given control system will meet the demands of an environment but has not addressed the dynamic planning of control actions Building an agent ...
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