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Now showing items 91-100 of 104
ارتفاع معدلات الخصوبة و تأثيره في عملية التنمية مع تحليل لأوضاع المرأة العربية
(
مجلس النشر العلمي - جامعة الكويت
, 2004 , Article)
أصبحت العلاقة بين الأبنية الاجتماعية والأبنية السكانية, أحد المؤشرات التي تقاس بوساطتها عمليات التغير الاجتماعي والاقتصادي, بل إنها تعد وسيلة لقياس مستويات التنمية- ويتناول هذا البحث ظاهرة الخصوبة لدى المرأة بوصفها أحد ...
اتجاهات الشباب و المراهقين نحو العمل الفني الصناعي في المجتمع القطري
(
مجلس النشر العلمي – جامعة الكويت
, 2004 , Article)
إن الكشف عن دور العوامل الاجتماعية والثقافية في تشكيل الاتجاهات نحو العمل ، وبالذات العمل في مهن معينة أصبح عملية ضرورية وبخاصة أن مجتمعات الخليج تواجه مشكلات عزوف قوة العمل الوطنية عن العمل في مجالات معينة ، ولاسيما العمل ...
C-Reactive Protein in the Premature Rupture of the Membranes
(
Hamad bin Khalifa University Press (HBKU Press)
, 2004 , Article)
Premature rupture of the membranes (PROM) defined as a rupture of membranes before onset of labor, which is one of the most complications of pregnancy that leads to significant maternal and neonatal morbidity and mortality. ...
Performance enhancement of relay-assisted communications via binary feedback
(
IEEE
, 2004 , Conference Paper)
This paper proposes a modified two-hop wireless communication system and studies its performance. The modified system has a reliable feedback channel that carries a binary signal from the receiver to inform the transmitter ...
Optimal power allocation for relayed transmissions over Rayleigh-fading channels
(
IEEE
, 2004 , Article)
Relayed transmission is a way to attain broader coverage by splitting the communication link from the source to the destination into several shorter links/hops. One of the main advantages of this communication technique ...
Performance of OFDM with M-QAM modulation and optimal loading over rayleigh fading channels
(
IEEE
, 2004 , Conference Paper)
We present optimum bit and power loading algorithms for orthogonal frequency division multiplexing (OFDM) systems using an M-ary quadrature amplitude modulation (M-QAM) scheme. Several scenarios for the amount of channel ...
A performance study of dual-hop transmissions with fixed gain relays
(
IEEE
, 2004 , Article)
This letter presents a study on the end-to-end performance of dual-hop wireless communication systems equipped with nonregenerative fixed gain relays and operating over flat Rayleigh-fading channels. More specifically, it ...
A Novel Resolver-to-360° Linearized Converter
(
IEEE
, 2004 , Article)
A novel and simple resolver-to-dc converter is presented. It is shown that by appropriate processing of the sine and cosine resolver signals, the proposed converter may produce an output voltage proportional to the shaft ...
Precise method for linearizing sine and cosine signals in resolvers and quadrature encoders applications
(
IEEE
, 2004 , Conference Paper)
Resolvers and quadrature encoders provide electrical signal related to the sine and cosine of the mechanical shaft angle over the full 360 degree range. A converter is described for the linearization of these signals, ...
Design and Assembly of Miniature Zirconia Oxygen Sensors
(
IEEE
, 2004 , Article)
Zirconia oxygen sensors are highly selective solid-state devices used for many applications, including combustion control for better fuel economy and lower emissions. Stabilized zirconia electrolyte meets the device ...