Engineering Modeling
Reza Eslamipoor; Arash Nobari
Abstract
Nowadays, designing a reliable network for blood supply chains by which most blood demands can be supplied is an important problem in the health care systems. In this paper, a multi-objective model is provided to create a sustainable blood supply chain, which contains multiple donors, collection centers, ...
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Nowadays, designing a reliable network for blood supply chains by which most blood demands can be supplied is an important problem in the health care systems. In this paper, a multi-objective model is provided to create a sustainable blood supply chain, which contains multiple donors, collection centers, distribution centers, and hospitals at different echelons. Regarding the potential of a blood shortage occurring, the suggested model considers the supply chain's capacity to meet hospitals' blood demands as dependable and a means of achieving the societal purpose. In addition, limiting the overall cost and environmental effect of designing a supply network and blood transportation are considered economical and environmental objectives. To solve the proposed multi-objective model, an improved ε-constraint approach is first employed to construct a single-objective model. Additionally, an imperialist competitive algorithm is developed to solve the single-objective model. Several test cases are analysed to determine the technique's effectiveness. CPLEX is then used to compare the results.
Other
Aniekan Essienubong Ikpe; Akanu-Ibiam Effiong Ndon; Promise Joseph Etim
Abstract
The R3 (Reduce, Reuse, Recycle) system of waste management specified by Environmental Protection Agency’s (EPA) waste management framework is the pathway to sustainable environment. This system which is practiced in advanced countries is given little or no preference in Nigeria where open waste ...
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The R3 (Reduce, Reuse, Recycle) system of waste management specified by Environmental Protection Agency’s (EPA) waste management framework is the pathway to sustainable environment. This system which is practiced in advanced countries is given little or no preference in Nigeria where open waste dumping is mostly practiced. Questionnaire based survey was employed to determine the awareness of the effects of open waste dumping by individuals. A physical survey was carried out to assess the risks posed by open waste dumping on the physical environment and health of individuals. Findings from the questionnaire-based survey indicated that many individuals are aware of the risks posed by open waste dumping system but have little or no knowledge of the R3 waste management standard for proper waste management. The physical survey pointed out that open waste dumping leads to infrastructural dilapidation and environmental degradation from drainage blockage and flooding. The findings also revealed that open waste dumping is responsible for outbreak of diseases such as Cholera, Diarrhoea, Malaria, Tetanus, Lassa fever, Typhoid and Yellow fever, Hookworm, and other parasite infestation as well as the promotion of fecal contamination of the hands, food and water that may result in fecal-oral transmission diseases. Hence, this method of waste management is responsible for water pollution, land pollution and the emission of obnoxious odour and also aid climate change and global warming through the release of Green House Gases (GHGs). From the risk evaluation carried out, simple and effective processes and technologies must be employed to aid the R3 practice for domestic recycling of specific waste.
Hadi Shirouyehzad; Sayyed Milad Anvari
Volume 1, Issue 2 , June 2014, , Pages 96-111
Abstract
Sustainable production is using non-polluting processes and systems by considering energy conservation and natural resources, which is sustainable in terms of economic, safety and health for employees, society and consumers. In general sustainable production refers to valuable social production for all ...
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Sustainable production is using non-polluting processes and systems by considering energy conservation and natural resources, which is sustainable in terms of economic, safety and health for employees, society and consumers. In general sustainable production refers to valuable social production for all working people. There are different perspectives on sustainable production indicators. However, some recent researches offered indicators for measuring sustainable production. Increasing the number of indicators causes managers’ confusion in using them. This paper offers a fuzzy inference system for indicators ranking in organizations. In this study, general prioritizations regardless of the type of manufacturing industry were considered and effort was focused on showing the relative degree of indicators for managers. So that it offers good understanding about importance of each indicator with regard to others for assessmenting the past, present and future of organizations. The results of the present study shows that beside economy, specialists have great attention on the environmental issues which is important and necessary for manufacturing in protecting natural resources and environments.
