Many researchers consider Homogeneous Charge Compression Ignition (HCCI) engine mode as a promising alternative to combustion in Spark Ignition and Compression Ignition Engines. The HCCI engine runs on lean mixtures of fuel and air, and the combustion is produced from the fuel autoignition instead of ignited by a spark. This combustion mode was investigated in this paper. A variable compression ratio, spark ignition engine type TD110 was used in the experiments. The tested fuel was Iraqi conventional gasoline (ON=82).
The results showed that HCCI engine can run in very lean equivalence ratios. The brake specific fuel consumption was reduced about 28% compared with a spark ignition engine. The experimental tests showed that the em
... Show MoreNeighShrink is an efficient image denoising algorithm based on the discrete wavelet
transform (DWT). Its disadvantage is to use a suboptimal universal threshold and identical
neighbouring window size in all wavelet subbands. Dengwen and Wengang proposed an
improved method, which can determine an optimal threshold and neighbouring window size
for every subband by the Stein’s unbiased risk estimate (SURE). Its denoising performance is
considerably superior to NeighShrink and also outperforms SURE-LET, which is an up-todate
denoising algorithm based on the SURE. In this paper different wavelet transform
families are used with this improved method, the results show that Haar wavelet has the
lowest performance among
Researching performance audits according to the dimensions of financial sustainability in light of the scarcity of resources and economic and social transformations in the business environment is of utmost importance in the non-profit non-governmental organizations in achieving the goals and correct the path and address deviations, and help them in improving the outputs of processes and associated procedures and capacity The research was based on the hypothesis that the existence of a performance audit program in accordance with the dimensions of financial sustainability leads to the measurement of the commitment of the Olympic Committee. National Iraqi indicators of financial sustainability of the dimension of revenue in order to improv
... Show Moreتُعد أبرز الإشكاليات التي تثيرها ظاهرة تعدد الجنسية مسألة تعيين القانون الواجب التطبيق على النزاع المشوب بعنصر أجنبي عندما تشير قواعد الإسناد الوطنية فيه إلى تطبيق القانون الشخصي, الأمر الذي ترتب عليه إجتهاد الفقه والقضاء في هذا المجال إلى معايير عدّة يمكن تطبيقها لترجيح أحدى الجنسيات التي يحملها متعدد الجنسية, فضلاً عن موقف التشريعات الوطنية الحديثة التي تبنت بعض ما رجح من هذه المعايير, ويمكن تج
... Show Moreملخـــص البحــــث
تناولتْ هذهِ الورقاتُ جُزئيّةً من جُزئيّاتِ قضيّةِ المنعِ من الصّرفِ أو التنوينِ في العربيّةِ، وهي جزئيّةٌ لم تُغفلْها المصادرُ النحويّةُ بدءًا من كتابِ سيبويهِ الذي أشارَ في كثيرٍ من أمثلتِهِ إلى التخييرِ المطلقِ بينَ الصرفِ والمنعِ، وأشار في مفرداتٍ أخرى إلى جواز صرفها ومنعها على وَفق اعتباراتٍ معيّنةٍ، لا بإطلاقها. والغاي
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