February 2013
Sexual orientation and the Nigerian society
The Alma-Ata declaration of the World Health Organization, written over three decades ago, clearly charted a new course for the health system of many countries. The historic meeting was the official launching of primary health care, whose principles are explicit equity, appropriate technology, integrated services, community participation and intersectoral collaboration. Nigerian had had her health system...
February 2013
What factors influence the adoption of inorganic fertilizer by maize farmers? A case of Kakamega District, Western Kenya
This study identifies the factors that influence adoption of inorganic fertilizers by maize farmers in Kakamega District. A probit model was used to analyze data collected from 169 maize farmers. The results showed that growing of a cash crop, off-farm income, access to an agricultural extension agent and use of improved maize seed positively and significantly influenced adoption of inorganic fertilizer....
February 2013
Transportation optimization model of oil products
Transporting massive amounts of oil products, it is essential to optimize the total efforts from leaving origins (refineries) until reaching destinations (depots). In this paper, integer mathematical programming model were developed to satisfy this oil transportation optimization problem. Specifically, it is dedicated to obtain refineries -to-depots optimal assignments by setting distance and cost minimization as the...
February 2013
Hyers-Ulam stability of non-homogeneous Euler equations of third and fourth order
The aim of this paper is to prove the stability in the sense of Hyers-Ulam to non-homogeneous Euler equations of third and fourth order: and. It is shown that if fis an approximate solution of any of these equations, then there exists an exact solution of the equation considered near to f. Key words: Hyers-Ulam stability, Euler equation, third and fourth order.
February 2013
Effect of irrigation and organic fertilization on oribatid mites (Acari, Oribatida) in forest nursery
The aim of the paper was to determine the effect of microirrigation and organic fertilization on the structure of assemblages of oribatid mites in Silver birch and Scots pine cultivations under conditions of mulching with forest ectohumus. Investigations were conducted at Forest Nursery Białe Błota, Forest District in Bydgoszcz (Poland). Separate experiments in Scots pine and S. birch stands were established in 2003;...
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