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Minimization of the operational costs, flexibility of the labor force and efficiency of all processes are increasingly important issues for every warehouse. Of all processes, order picking is recognized to be the most costly activity and therefore tends to get the most attention. Key objectives in designing an order picking operation include increases in productivity, reduction of cycle time, and...
Based on the demand of material, this paper first selected the evaluating factors about choosing suppliers, and analyzed the correlation among evaluating factors. Then, by combining the merits of Analytic Network Process (ANP) and entropy right, this paper proposed a method to calculate the compound rights of factors. The new method fully takes advantage of the relationship between factors and the...
In this paper, we took Elaeagnus angustifolia as material. The paper studied characteristics of seasonal and spatial variations of proanthocyanidins content. There was an apparent difference in proanthocyanidins content of the leave from May to October, the maximim content of proanthocyanidins in October was 34.36 mgldrg-1 DW, while proanthocyanidins content in July was only 17.16 mgldrg-1 DW. Content...
This paper uses economic value metrics to evaluate the retention of value of secondary materials and provides a framework for characterizing value throughout a material and product life-cycle. These economic value metrics are compared with analogous life cycle assessment metrics in order to determine the conditions under which economic value effectively represents environmental impact for EoL material...
Materials selection decisions exhibit great influence on the environmental performance of firms through their impact on processing technology, product form, and supply chain configuration. Consequently, materials dictate a product's environmental profile via the burden associated with extraction and refining, transformation from material to product, product performance characteristics during use,...
Viewers today have access to broadcasted audiovisual media via a multitude of platforms: from high definition movie theaters to smart cellular phones on the road, and online using the web. In order to provide these audiences with a proper universal media experience, each class of media consumption devices should receive a product not only adapted to its capabilities and usage environment, but also...
This paper provides a reflection on the potential contribution of scientific computing with a view to improving energy system efficiency. First, we will consider energy efficiency globally in order to evaluate its potential. We will then focus on electricity, since electrical energy is interpreted as the universal vector of work. This will give us the understanding we need for envisaging a more efficient...
This paper presents an "ontology-based" model for the production of Learning Designs in the field of Education for sustainable energy development. An ontology of the sustainable energy development domain and an educational model, designed incompliance with IEEE LOM standard and IMS LDspecification, constitute this model, in order to disprove the vagueness of "sustainable development",and...
Since several years lecture recordings have intensively been used as a teaching tool. Several courses are provided with lecture recordings as complementary learning material. Several distribution variants of lecture recordings have been investigated. Podcasts have established as a comfortable distribution technology for lecture recordings and are now established as a regular service for lecturing...
In this paper the production and comprehension of speech is viewed as a dynamic choice of strategies within a situation, divided into two broad areas of learning and communication strategies. These strategies are defined with reference to the uniqueness of foreign language knowledge and its special nature.
Flexible high barrier materials are needed for the use of future PV module technologies. R2R processes play a key roll for the production of e.g. a-Si, μc-Si, CIS, CIGS or CdTe modules. The requirements for such flexible high barrier materials are very demanding. Permeation values as low as 10−5 g/m2 day for water vapor transition (WVTR) and respectively 10−5 cm3/m2 day atm for oxygen transition (OTR)...
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