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Register a new userThe study of the mathematical model for the delay time on subscriber line over the Integrated Service of Digital Network (ISDN)
دراسة النموذج الرياضي للتأخير الزمني على خط مشترك الشبكة الرقمية المتكاملة الخدمة (ISDN)
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Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Communication Engineering
and research's language is
العربية
Authors
غسان محمد( باحث )
Created by
Shamra Editor
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تعد سرعة نقل المعلومات في شبكات المقاسم الرقمية بشكل عام و الشبكة الرقمية المتكاملة الخدمة (ISDN), من أهم الميزات التي يتم لحظها أثناء عملية تصميم الشبكات. تهدف الدراسة إلى تحديد طبيعة و آلية عمل التأخير الزمني و الذي يؤثر بشكل كبير على سرعة النقل و بالتالي على تحديد مواصفات الشبكة و ذلك من خلال وضع النموذج الرياضي لتحديد التأخير الزمني الذي تسببه قناة التأشير (التحكم) على خط المشترك في حالة الارتباط أو الدخول الأولي PRI إلى شبكة ISDN. تم وضع نموذج خدمة جماعية (QS). لدراسة الخواص الزمنية لطريقة PRI.
Data Transfer among international switchboard network in generally as Service of Digital Network (ISDN) are very important to be considered in the design process. This study aim at identifying the nature and mechanism of the Time Delay which immensely affects data transfer and later on identifying networks characteristics, through implementing the Mathematical Model to calculate Time- Delay caused by the control channel on the subscriber line in case of primary signing in PRI into the (ISDN).Queuing System (QS) model was introduced in order to examine time characteristics of PRI.
References used
UIT . Pekomengayw I400, X200, Q711, Q714 , Q761, Q766, Q920, Q921, Q931
Electrical Communication // The technical journal of ITT. 1985. N 1/2 V.59 P.105-119
K. S. Trivedi, Probability and Statistics with Reliability, Queueing, and Computer Science Applications. Wiley-Interscience, 2001
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تطبيقات الزمن الحقيقي
التحكم بالازدحام
Congestion Control
تطبيقات الزمن غير الحقيقي
قواعد الرتل
خوارزمية البداية البطيئة
تجنب الازدحام
خوارزمية إعادة الإرسال السريع و الاستعادة السريعة
Real Time application
non-real time application
Queue disciplines
Slow start algorithms
Congestion avoidance algorithms
Fast retransmit and Fast recovery
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هدف هذا البحث الى معرفة دور استخدام نماذج صفوف الانتظار في تحسين وقت الخدمة للعيادات الصحيّة في الجمهوريّة العربيّة السوريّة، وطبقت الدراسة في العيادة القلبيّة بمستشفى تشرين بدمشق خلال الفترة الممتدة من 1/7 إلى 30/8 من عام 2019.
توصّلت الدراسة إلى ت
قديم نموذج بديل لتحسين الوضع الحالي الموجود في العيادة الصحيّة محل الدراسة، حيث ساهم النموذج البديل في تحسين مقاييس الأداء بشكل جوهري كما يؤدي تطبيق هذا النموذج إلى تخفيض عدد المرضى في صف الانتظار الخاص بالعيادة إلى مستوى شبه معدوم.
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