given a graph $g$, let $g^sigma$ be an oriented graph of $g$ with the orientation $sigma$ and skew-adjacency matrix $s(g^sigma)$. then the spectrum of $s(g^sigma)$ consisting of all the eigenvalues of $s(g^sigma)$ is called the skew-spectrum of $g^sigma$, denoted by $sp(g^sigma)$. the skew energy of the oriented graph $g^sigma$, denoted by $mathcal{e}_s(g^sigma)$, is defined as the sum of the n...

OBJECTIVE The aim of this work was to assess weight loss claims of slimming products available in Switzerland. METHOD Between May 2008 and February 2013, 31 advertisements for 13 slimming products were analyzed. RESULTS Total daily weight loss claims ranged between 300 g and 1 kg. 84% of the advertisements included the photograph of a woman, 61% showed a picture of a person before and after...

learning how to use technical products is of high interest for customers as well as businesses. Besides product usability, technical documentation in various forms plays a major role for the acceptance of innovative products. Software applications partly integrate personalized learning strategies but late developments in information and communication technology extend these potentials to the no...

In this position paper we discuss the application of personalization in persuasive technology design in light of the Personalized Design Process model (PDP-model). The PDP-model defines personalization as aligning a persuasive product to the end-user by stakeholder involvement (i.e. designers, endusers, domain experts and family/relatives) across the Problem Definition-, the Product Designand/o...

amonge other things we give sufficient and necessary conditions for the lau product of banachalgebras to be biflat or biprojective.

In order to achieve a sustainable development, circular economy approaches and circular material flows are explored in industry. However, circular information flows remain essentially unestablished. The aim of this paper is to: 1) explore categories and types of product life-cycle information available for remanufacturing; 2) identify constraints for efficient product life-cycle information flo...

It is a global trend nowadays for manufacturing and service firms to create and increase customer value either during initial design of a product/service or by modifying their existing products/service. When a product already exists, customer value can be increased by adding new qualities/features to a traditional product that would add much needed services while keeping price competitive. Qual...

in this paper, we give a characterization of strongly jordan zero-product preserving maps on normed algebras as a generalization of  jordan zero-product preserving maps. in this direction, we give some illustrative examples to show that the notions of strongly zero-product preserving maps and strongly jordan zero-product preserving maps are completely different. also, we prove that the direct p...

let g be a simple connected graph. the generalized polarity wiener index ofg is defined as the number of unordered pairs of vertices of g whosedistance is k. some formulas are obtained for computing the generalizedpolarity wiener index of the cartesian product and the tensor product ofgraphs in this article.