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خوارزمية تخطيط التطور متوسط الأمد لشبكات الربط القطرية لتغطية الأحمال المتزايدة

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 Publication date 1999
and research's language is العربية
 Created by Shamra Editor




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References used
Walter l. Weeks: tarnsmission and distribution of electrical energy mc-graw hell , New York 1981
J.-p. Barret P. Bornard B.meyer : power system simulation London 1997
3-tadeusz kahl: sieci elektroenergetyczne, warszawa, poland, wnt 1984
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نشأ النظام العربي في الأصل مؤسسًا على واقع الدولة القطرية. فقد تكونت جامعة الدول العربية في عام 1945 من سبع دول عربية مستقلة، و أوجد ميثاقها نماذج للتفاعل بينها لا تتجاوز هذا الواقع القطري و إن لم تحل دون تخطيه لمن شاء، و استمرت هذه الصيغة مع توالي ا ستقلال البلدان العربية و انضمامها للجامعة. و قد كانت واقعة الاستقلال القطري بحد ذاتها نقطة انطلاق لتكريس واقع الدولة القطرية بحكم مصالح النخب الحاكمة و سعيها إلى ترسيخ أوضاعها استنادًا إلى شرعيات "وطنية"، و تغذية النوازع "الوطنية" القطرية أحيانًا على حساب القومية. و قد تعامل الفكر القومي العربي مع هذه الظاهرة، على الأقل وفق بعض تياراته الأصيلة، تعاملا سليمًا يجمع بين الواقعية و المثالية، فقد اعترف بالواقع القطري و إن لم ير فيه عائقًا أمام تحقيق الوحدة العربية.
This paper provides algebraic representation of Petri Nets model, taking advantage that the releasing principle of Petri Nets depends on reduction process of Monoiad of the commutative natural numbers. (In conclusion) Finally, we provided a theore m that explains how to make use of algebraic properties, to simulate Petri Nets algebraically and identify the results we will get after releasing a series of Petri Nets' transitions.
We consider the task of linking social media accounts that belong to the same author in an automated fashion on the basis of the content and meta-data of the corresponding document streams. We focus on learning an embedding that maps variable-sized s amples of user activity--ranging from single posts to entire months of activity--to a vector space, where samples by the same author map to nearby points. Our approach does not require human-annotated data for training purposes, which allows us to leverage large amounts of social media content. The proposed model outperforms several competitive baselines under a novel evaluation framework modeled after established recognition benchmarks in other domains. Our method achieves high linking accuracy, even with small samples from accounts not seen at training time, a prerequisite for practical applications of the proposed linking framework.
In this work, we present a method for content selection and document planning for automated news and report generation from structured statistical data such as that offered by the European Union's statistical agency, EuroStat. The method is driven by the data and is highly topic-independent within the statistical dataset domain. As our approach is not based on machine learning, it is suitable for introducing news automation to the wide variety of domains where no training data is available. As such, it is suitable as a low-cost (in terms of implementation effort) baseline for document structuring prior to introduction of domain-specific knowledge.
The desire to improve the overall performance of IP network leads to designing new QoS achitectures. The new Enhancement in providing quality of service (QoS) on the Internet is based on the Different Services (DiffServ). DiffServ divides traffic i nto small classes and allocates network resources on a per-class basis. In this architecture, packets are marked with different DiffServ code points (DSCP) at edge routers, and the priority for packets is given via the value of this field. On the other hand, MPLS is a fast forwarding mechanism that depends on Label's. The main advantage of MPLS is its support for traffic engineering which results in best utilization of network's resources like link capacity. The integration of using MPLS (as a forwarding mechanism) with DiffServ (as a QoS mechanism) offer high Quality of service especially for real time applications (such as VoIP, Video Conference). We evaluate the performance of MPLS-DiffServ networks in our research. We study QoS metrics as delay, variation of delay, upload response time, link utilization, packet loss for several kinds of traffic (Voice, Video, FTP) by using OPNET Simulator and we showed its superiority over MPLS network and pure IP ones. We compare our results with MPLS networks and pure IP ones. Our results showed superiority of MPLS-DiffServ over other kinds of networks. This is clear in decreasing delay ,delay variation, upload response time, queuing delay, reduction of lost packets and best utilization of link capacity.
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