الهندسة
الفئة: الهندسة
دراسة مقارنة لأداء نظام VBLAST و QOSTBC ونظام MIMO المختلط BLAST-STBC تحت الخبو العميق pdf
ملخص الدراسة: This paper studies the effect of transmit antenna multipath channel deep fading on the effective received signal-to-noise ratio (SNR), bit error rate (BER), capacity and throughput of 4 × 4 MIMO system for several transmit fading scenarios. The simulated results are obtained in an environment of 4 × 4 MIMO system using MATLAB […]
انتاج الاسفلت المسامي في فلسطين طبقا للمواصفات الامريكية ASTM D7064 pdf
ملخص الدراسة: Porous Asphalt (PA) pavements offer an alternative technology for storm water management because it differs from traditional asphalt pavement designs in its high air void ratio which can reach more than 20 %. Aim of the research is to produce porous asphalt according to ASTM D7064 and to study the different characteristics and […]
تحسين النزليف المكاني الفائق التعامدي الشبكي المرمز باستخدام STBC-CSM pdf
ملخص الدراسة: Trellis coded modulation (TCM) is a scheme that enhances the error performance without extra power not bandwidth. This paper presents a modified Super-Orthogonal Trellis-Coded Spatial Modulation (SOTC-SM) based on a cyclic structure of the Space Time Coding. The developed code benefits from expanded codebook of the Space Time Block Coded Spatial Modulation (STBC-SM) […]
تقدير فرق وقت الوصول بمساعدة التقسيم الترددي المتعامد pdf
ملخص الدراسة: This study presents a spectral approach to estimate the time difference of arrival (TDOA) between a reference unit, composed of a pair of very close antennas (small baseline regarding the operating bandwidth), acting as a known fixed location transmitter, and a mobile unit acting as a single antenna receiver. It uses the channel […]
تحليل تكنولوجيا العناقيد في اكتشاف البرامج الخبيثة في بيئة أندرويد pdf
ملخص الدراسة: Mobile computing is an important field in information technology, because of widely using mobile devises and mobile applications. Clustering is a substantial task gives good results with information retrieval (IR); it aims to put automatically similar applications in one cluster. In this paper, we present an unsupervised machine learning based system for automatic […]
تطوير نظام ترسية العطاءات على مقاولى التشييد فى قطاع غزة باستخدام شبكات الاعصاب الاصطناعية pdf
ملخص الدراسة: The purpose of this paper is to develop a model for selecting the best contractor in the Gaza Strip using the Artificial_x000D__x000D_ Neural Network (ANN). The contractor’s selection methods and criteria were identified using a field survey. Fifty four engineers_x000D__x000D_ were asked to fill a questionnaire that covers factors related to the selection […]
تحديد العوامل التى تؤثر على التدخل لمساعدة حالات العسر الشديد في قطاع غزة- الوكالة نموذجا pdf
ملخص الدراسة: The sheltering and housing for special hardship cases families is one of main objectives of UNRWA._x000D__x000D_ It contributes to alleviating the suffering of poor refugee families. There are many problems beyond noninterference in the process of housing, which negatively affects human dignity and the right to housing. This_x000D__x000D_ paper aims to improve the […]
نحو التوجه للبناء الاخصر و السلس في مشاريع التشييد في قطاع غزة pdf
ملخص الدراسة: Background and problem: Integrating lean and green_x000D__x000D_ principles while implementing construction project has_x000D__x000D_ become an important aspect of modern construction._x000D__x000D_ Lean construction and green building are used to maximize the economic benefits, address quality, reduce waste_x000D__x000D_ and minimize the negative environmental impacts in construction._x000D__x000D_ Aims: The objectives of this paper were to measure […]
العوامل التى تؤثر على تصعيد التكاليف في مشاريع التشييد في قطاع غزة pdf
ملخص الدراسة: Cost escalation is one of serious difficulties that_x000D__x000D_ facing the construction industry. The construction sector_x000D__x000D_ suffers from ever-increasing cost of raw materials,_x000D__x000D_ construction inputs and inflation in domestic and_x000D__x000D_ international markets. The aim of this paper is to identify_x000D__x000D_ factors affecting the cost escalation in construction projects in_x000D__x000D_ the Gaza Strip. This will […]
الإرسال الزمكاني لشبكات الاتصال التعاونية غير المتزامنة pdf
ملخص الدراسة: In this paper, an effective transmission scheme is proposed for asynchronous cooperative networks with two relays. The need for synchronization is obviated by allowing a single relay to be active in each time-slot of the transmission. However, the scheme still achieves a cooperative diversity order of two through some simple operations introduced at […]
