النشر العلمي

  • الكفايات اللازمة لمعلمة رياض الأطفال لتنمية التفكير الإبداعي (دراسة تطبيقية بمحلية ودمدني الكبرى، ولاية الجزيرة، السودان،2016م)

هدفت الدراسة إلى التعرف على الكفايات اللازمة لمعلمة رياض الأطفال لتنمية التفكير الإبداعي وربطها بمتغيرات التخصص، المؤهل الأكاديمي، سنوات الخبرة، ونوع الروضة(حكومي/ خاص). اتبعت الدراسة المنهج لوصفي. استخدمت قوائم الكفايات اللازمة لمعلمة رياض الأطفال لتنمية التفكير الإبداعي بوصفها أداة للدراسة. تكونت عينة الدراسة من (40) معلمة من معلمات رياض الأطفال بمحلية مدني الكبرى تمثل (13%) من مجتمع الدراسة. توصلت الدراسة لعدة نتائج منها: تتمتع معلمات رياض الأطفال بالكفايات اللازمة لتنمية التفكير الإبداعي بدرجة كبيرة، توجد فروق ذات دلالة إحصائية في الكفايات اللازمة لمعلمة رياض الأطفال لتنمية التفكير الإبداعي ترجع لمتغير التخصص لصالح (رياض الأطفال)، والمؤهل  الأكاديمي لصالح (الجامعي)، ومتغير سنوات الخبرة لصالح الفئة العمرية (6- وأقل من 10)، لم تظهر الدراسة وجود فروق ذات دلالة إحصائية ترجع لمتغير نوع الروضة.

published in مجلة جامعة البطانة للعلوم الانسانية والاجتماعية، المجلد السادس- العدد الأول يونيو 2018م

  • Mapping the Gadambalyia Schemes Posts using remote sensing and GIS, Gadaref State, Sudan (Hanan O.Ali. Eltayeb M. Abdelmalik, Xavier Auqusseau and Elsadig A. Eljak)

The rain-fed agricultural sector of Sudan constitutes a major part of its agricultural production. About 60% of sorghum production comes from this sector, whose share is about 26% of the national income. Gadaref state in Eastern Sudan is the most important region in the rain-fed sector in Sudan, in which Gadambalyia schemes are of major importance. Gadambalyia rain-fed mechanized agricultural schemes are the largest schemes in rain-fed agricultural for sorghum production. The schemes (Gadambalyia, Kilo 6 and Elhori) are located west of Gadaref town, in the eastern region of Sudan. The schemes are subtended by latitudes 13° 45´ and 14° 15´ N and longitudes 34° 45´ E. The area of the schemes is about 126,000 hectares (ha). The only maps available for the schemes are unscaled maps generated in the 1940s. these unscaled maps inadequate for precise management. This paper, therefore, aims to map the plots of the schemes and draw an information system using SPOT 5 images taken on 9 October 2005 and GIS MapInfo 7.8. This is the best time for conducting the analysis because at this time sorghum is well established, making it easy to identify the exact limit of the plots. The images were registered and corrected with ground-truth points that were taken during field inventory in the last week of September 2005. The boundaries of each plot were digitized and the area was calculated using MapInfo 7.8.  The up-to-date vector layer for precise plot  shape, roads, lanes and seasonal streams was formed and presented in tables and maps to reduce the cost of input and minimize disputes between farmers. The resulting map was presented to the Ministry of Agricultural in Gadaref State. The databases for the schemes were formed with georeference data. The integration of the information system with the new map will help in adding new information regarding the schemes.

 

published in State of Kuwait

  • تجربة جامعة الجزيرة في تقويم الأداء العلمي للطلاب

تستعرض هذه الورقة السمات العامة لتجربة جامعة الجزيرة في تقويم الأداء العلمي للطلاب وتبدأ بمقدمة تستعرض فلسفة الجامعة والنظام التعليمي المتبع فيها وتدلف بعد ذلك الى النظم المختلفة في تقويم الطلاب ومقارنتها بالنظام المتبع في جامعة الجزيرة.

سنتعرف بعد ذلك على مميزات نظام التقويم المتبع في جامعة الجزيرة بأمثلة واقعية خلال مسيرة الجامعة في العشرين سنة المنصرمة والنقد الموجه لنظام التقويم المتبع بالجامعة. نختتم الورقة ببعض المقترحات والتوصيات لتجويد نظام التقويم المتبع بجامعة الجزيرة.
 

published in مجلة التعليم العالي والبحث العلمي 2: 13-26

  • Chemical and biological assessement of nitrogen availability to lowland rice

Lowland rice culture occurs in many soils that differ considerably in their total nitrogen content, physical, chemical, and biotic conditions as well as crop management and climatic conditions. Consequently, the soil N supplying capacity and plant availability differ widely. The conditions brought about by soil submergence make the nature of N transformations encoun-tered in lowland rice culture different from those in their upland counterparts. The high energy costs of manufacturing fertilizer N in developing countries and the concern over environmental quality in the technologically developed countries warrant the search for means of more efficient use of fertilizer N. The development of soil N availability indices is an important research component in achieving this goal. The work on N availability indices has emphasized problems and management practices encountered under upland conditions. There has only been few comprehensive studies on the problem of N availability under flooded conditions. The mineralizable N pool in soil plays a dominant role in the N nutrition of lowl and rice. This is because more mineral N is released from organically bound N under flooded than under nonflooded conditions. Also fertilizer N losses are much greater in waterlogged soils than in well-aerated soils. Many papers reporting studies using* N-labelled fertilizers (11, 39, 75) have shown that approximately one-half to three-fourths of the total N utilized by rice comes from soil mineralizable N. Many workers (56, 108,115, 95, 96, 52, 55, 94,113, 73, 24, 80, 85, 89)

published in University of California, Davis

  • The effect of water stress on rice yield components

Rice is a semi-aquatic plant, and is grown under a variety of soil and climatic conditions. Its water management problems differ in many respects from those of other crops. The quantity of water required for one acre of rice cultivation (total water under flooded system) may sometimes be sufficient to grow two to four acres of other crops. O’Toole and Chang (35) state that the improvement of rice regarding water stress has been ignored, perhaps, because of the mis-conception that the yield of rice in tropical regions of Monsoon Asia, is virtually safe from, or not limited by water deficit. Precise knowledge regarding optimum water regimes is essential in rice culture. Maintenance of turgor is one of the most important aspects of plant growth and development as it is associated with plant morphology and a host of physiological functions incluidng stomatal opening and closing. Turgor pressure is a critical factor in cell expansion. Restriction of growth by water stress is due to turgor reduction and other associated physiological phenomena. Cell expansion is one of the plant processes most sensitive to water stress. Reduction in cell size has been well correlated with reduction in water potential in the media in which the growing tissue is emersed. Evidences suggest that growth and metabolism of plants in a drying soil are influenced by even mild water deficit in leaves, and that such internal deficit usually occurs long before the drying soil approaches the permanent wilting percentage (30). For increased nutrients availability, algal nitrogen fixation, weed control, and temperature regulation complete submergence in the rice field has been emphasized (7, 8, 37, 55). Alternative wetting and drying,

published in University of California, Davis

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