Sorghum (Sorghum bicolor [L.] Moench) production has considerable socio-economic values in sub-Saharan Africa for food security and to serve the increased industrial demands due high population pressure climate change. However, productivity of crop are yet be expounded Nigeria economic gains. Therefore, objective this study was present current opportunities constraints sorghum Nigeria. A partic...

production planning and scheduling are the most important issues of the production industries, which have a considerable influence on the productivity of the production systems. although, production planning and scheduling are in two different medium-term and short-term decision making levels, there are a very close relationship between them. ignoring this important feature in production planni...

This study was undertaken to assess the production systems, prospects and challenges of quail farming in three (3) ecological zones (Rainforest, Transitional Guinea Savannah) Ghana. Sixty (60) farmers were purposefully sampled for using snowball sampling technique. Data gathered through interviews with aid structured questionnaire analysed SPSS 22.0. The results showed that more males (86.7%) t...

Covering arrays have been studied for their applications to drug screening and software and hardware testing. In this paper, we model the problem as a constraint program. Our proposed models exploit non-binary (global) constraints, redundant modelling, channelling constraints, and symmetry breaking constraints. Our initial experiments show that with our best integrated model, we are able to eit...

Quark-meson duality for two-point functions of vector and axial-vector QCD currents is investigated in the large-Nc approximation. We find that the joint constraints of duality and chiral symmetry imply degeneracy of excited vector and axial-vector mesons in the large-Nc limit. We compare model-independent constraints with expectations based on the VenezianoLovelace-Shapiro string model. Severa...

strategic programming, complex supply chain, lean, production programming, suppliers selection,   electre this paper represents a model of strategic programming with limited resources in a complex supply chain. the main goal of the proposed model is to increase efficiency and effectiveness of the supply chain with respect to income increases and cost decreases. using special objective functions...