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 Modeling Eutrophication using Geospatial Techniques. A Case study of Lake Manzala, Northern Egypt
Наименование:

Modeling Eutrophication using Geospatial Techniques. A Case study of Lake Manzala, Northern Egypt

автор Ahmed E.K. издательство Книга по Требованию География
Cтраниц 120        мягкая обложка       
Аннотация:In conjunction with excessive eutrophication in the lake, an overall move towards urbanization and increasing the cultivated land was detected in the catchment. Eutrophication maps were undertaken for each parameter using Carlson trophic indices. In addition, Kriging method of interpolation was effectively performed to identify the spatial patterns of all measured parameters. It was shown that all eutrophication variables were significantly located along SE – NW and E – W directions. Fluxes in eutrophication status in Lake Manzala, the largest freshwater lake in Egypt, were investigated based on comparison of multiparameter data. An integrated approach should be adopted to attain the lake restoration and enhance truly sustainable development of water. The investigation indicates that the lake has dramatically experienced accelerated eutrophication (71. 14 % and 27. 73% of the lake were eutrophic and hypertrophic respectivel). This approach should chiefly be based on a comprehensive range of policies such as building capacity and increasing environmental awareness in the local community. Spherical model was applied to fit all experimental variograms.
Автор: Ahmed E.K.
Издательство: Книга по Требованию
Год:2009
Цена:
1996 руб
Нет в наличии
Поиск: Modeling Eutrophication using Geospatial Techniques. A Case study of Lake Manzala, Northern Egypt
НОВЫЙ ГОД СИМВОЛ 2013 ГОДАУКРАШЕНИЯ
КАРНАВАЛ НА НОВЫЙ ГОД РАСПРОДАЖА
Ортомолекулярная медицина Orthomol Устрание причин заболеваний. Ортомоль это новый метод для лечения и профилактики болезней. Orthomol - ортомолекулярная медицина.
Evaluating the GPRS Radio Interface for Different Quality of Service...

I co ras o he models developed i , our approach addi io ally represe s he mobili y of users hrough arrival ra es of ew GSM a d GPRS users as well as ha dover ra es of GSM a d GPRS users from eighbori g cells. Fur hermore, we co sider users wi h differe QoS profiles modeled by a weigh ed fair queuei g scheme accordi g o . he remai der of he paper is orga ized as follows. Sec io 2 describes he basic GPRS e work archi ec ure, he radio i erface, a d differe QoS profiles, which will be co sidered i he simula or. I Sec io 3 we describe he sof ware archi ec ure of he GPRS simula or, de ails abou he mobili y of GSM a d GPRS users, he way we modeled quali y of service profiles, a d he workload model we used. Resul s of he simula io s udies are prese ed i Sec io 4. We provide curves for average carried raffic a d packe loss probabili ies for differe cha el alloca io schemes a d packe priori ies as well as curves for average hroughpu per GPRS user.3 he Simula io Model We co sider a clus er comprisi g of sever hexadiago al cells i a i egra ed GSM/GPRS e work, servi g circui -swi ched voice a d packe -swi ched da a calls. he performa ce s udies prese ed i Sec io 4 were co duc ed for he i ermos cell of he seve cell clus er.
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