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Damascus University ورقة بحثية
Publication date
2003
fields
Economy
and research's language is
العربية
Authors
عدنان عباس حميدان( باحث )
Created by
Shamra Editor
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عرض البحث مشكلة نقل مليوني حاج راشد من مكان مقدس يدعى عرفات بالقرب من مكة المكرمة إلى مزدلفة بهدف إيجاد الحلول المثلى لمسألة نقل الحجاج بين هذين الموقعين المقدسين للحصول على تدفق أعظمي للحجاج و مرور مثالي لهم، و ذلك من خلال اعتماد نموذج للبرمجة الخطية في إيجاد حل مثالي لمسألة نقل الحجاج من عرفات إلى مزدلفة . و قد عرض البحث بعض الدراسات السابقة في هذا المجال، و من ثم تناول عملية التدفق الأعظمي للحجاج و تقليص تكلفة النقل من خلال تقديم تابع هدف لتقليل التكلفة الإجمالية للنقل و إضافة وسيلة نقل جديدة تضاف إلى الوسائل الأخرى و تبيان خدمة الذهاب و الإياب على أن يخصص نموذج خاص من وسائل النقل . و قد طرح البحث نموذجًا مقترحًا للبرمجة الخطية تضمن توابع هدف متعددة، إذ تم استخدام طريقة القيد لمعالجة مثل هذه الأغراض المتعددة في ظل توافر الشروط الأساسية الآتية: مرور مثالي، و شروط طقس مثالي ، و تدفق مستمر و منتظم ، و طلب كافٍ بالاتجاه المعاكس، و قدرة كافية على السعة بالاتجاه الأساسي، و هندسة طرق مثالية ، و تحكم بالتدفق وفقًا لمستوى الخدمة المطلوبة.
No English abstract
References used
د. محمد سالم الصفدي : البرمجة الخطية وبحوث العمليات. الكويت، 1985
د. صباح الدين بقجه جي - د. خلف مطر الجراد: بحوث العمليات، جامعة دمشق 1990
د. إبراهيم العلي: بحوث العمليات، جامعة تشرين 1991
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This paper presents one of the most accurate, stable and fast to response advanced control system (PROPORTIONAL INTEGRAL DIFFERENTIAL CONTROL SYSTEM), which considered one of the special cases of closed loop control systems. Also, display and compare
different forms of control and response of sub modes of PID controller, through using programmable logical controller and programmed it to be (PID) controller, and take advantage of this system for accurate control of the three phase motor speed. In addition, the PLC program is been connected to monitoring and collecting data software, known by acronym (SCADA) for calibration of (PID) and use this software to display the result of the responses for the different types of the controller PID in the form of graphic curves. These response curves show accuracy and fast to response that make this application an integrated system that could be form the infrastructure of many practical applications like large cranes, overlapping product lines and different other applications and the use of PLC systems make them high quality and high reliability systems.
In our thesis, we present many previous approaches for mapping BPMN to BPEL. Moreover, we compare between their own strengths and weaknesses. Then we offer our new approach based on ESHUIS-GREFEN2 algorithm. We develop this algorithm to accept BPMN a
s input and BPEL as output. In addition, we solve the synchronization problem in ESHUIS algorithm by adding algorithm to find and process cross-synchronization links between parallel branches. We evaluated our approach by doing two case studies and comparing the results with other approaches and implementations.
خدمات ويب
Web Services
BPMN
مخطط إجرائية العمل
تمثيل رمزي لإجرائيات العمل
اللغة التنفيذية لإجرائيات العمل
تجميع الخدمات
الإجرائيات المهيكلة
الروابط المتزامنة
مخطط إجرائية العمل المبني بشكل جيد
Business process diagram
BPEL
composing services
structured process
synchronization dependencies
well-formed business process diagram
المزيد..
Studies and research about rhetoric have varied concerning the definition of rhetoric,
but most of them look at rhetoric from on side only. Rhetoric was classified as being a kind
of research concerned with the art of persuasion in its techniques,
means and components.
But it is certain that the political and social conditions of the greak life, led these
philosophical studies and linguistic research especially, rhetoric. This made Aristotle
divide rhetoric into three sections.
The research delt with two main titles, the first one was Rhetoric according to
Aristotle. It combines between mans ability to speak and express on one hand becavse man
is a speaker and expressor who naturally looks for persuasion. In his speech, he tries to
convince as many people as possible. To do this, he uses many instinctive means. Aristotle
was concerned with rhetoric due to its mental and psychological sides.
He tried to find a kind of balance between the means of persuasion and means of
influence. He made convincing help infuencing. He diffentiated between kinds of proofs,
the made proofs and the non made proofs. The other ones were the base of the rhetoric
structure for Aristotle. The argumentative linguistic text is different from other texts that it
builds an interactive structure based on some means that aim to persuade and affect the
recipient.
The transformer-based pre-trained language models have been tremendously successful in most of the conventional NLP tasks. But they often struggle in those tasks where numerical understanding is required. Some possible reasons can be the tokenizers a
nd pre-training objectives which are not specifically designed to learn and preserve numeracy. Here we investigate the ability of text-to-text transfer learning model (T5), which has outperformed its predecessors in the conventional NLP tasks, to learn numeracy. We consider four numeracy tasks: numeration, magnitude order prediction, finding minimum and maximum in a series, and sorting. We find that, although T5 models perform reasonably well in the interpolation setting, they struggle considerably in the extrapolation setting across all four tasks.
Deep neural networks for natural language processing are fragile in the face of adversarial examples---small input perturbations, like synonym substitution or word duplication, which cause a neural network to change its prediction. We present an appr
oach to certifying the robustness of LSTMs (and extensions of LSTMs) and training models that can be efficiently certified. Our approach can certify robustness to intractably large perturbation spaces defined programmatically in a language of string transformations. Our evaluation shows that (1) our approach can train models that are more robust to combinations of string transformations than those produced using existing techniques; (2) our approach can show high certification accuracy of the resulting models.
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