3,717 research outputs found
Feiras Internacionais de moda, a sua importância : como participar
Muitas são as questões por responder sobre a problemática da internacionalização das marcas de moda, este trabalho aborda apenas alguns destes conceitos, através das experiências de marcas de moda que expõem em feiras internacionais europeias, procura compreender quais os maiores desafios enfrentados na preparação para estes eventos.There are many unanswered questions about the issue of internationalization of fashion brands, this paper discusses only some of these concepts, through the experiences of fashion brands that exhibit at international fairs in Europe, sought to understand what the biggest challenges in preparing for these events
Scaling Approach to the Phase Diagram of Quantum Hall Systems
We present a simple classification of the different liquid and solid phases
of quantum Hall systems in the limit where the Coulomb interaction between the
electrons is significant, i.e. away from integral filling factors. This
classification, and a criterion for the validity of the mean-field
approximation in the charge-density-wave phase, is based on scaling arguments
concerning the effective interaction potential of electrons restricted to an
arbitrary Landau level. Finite-temperature effects are investigated within the
same formalism, and a good agreement with recent experiments is obtained.Comment: 4 pages, 3 figures; to be published in Europhys. Lett.; new version
contains more detailed description of finite-temperature effect
Internacional fashion fairs
This paper analyzes the concepts related to Fashion Brands in a global context, studying the existing concepts on International Trade, seeks to identify how these brands are structured and how do they trade their products, trying to identify strategies used by some brands in Fashion shows, and so establish an ideal structure to be adopted in participating in international fashion fairs.Este trabalho analisa os conceitos relativos às Marcas de Moda num âmbito global, estuda os conceitos já existentes sobre Feiras Internacionais, procura identificar como estas marcas estão estruturadas e como comercializam seus produtos, procura identificar estratégias adotadas por algumas Marcas em Feiras de Moda, e assim estabelecer uma estrutura ideal a ser adotada na participação em feiras de Moda Internacionais
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Development of an Economic Decision Support for the Application of Additive Manufacture in Aerospace
Additive Manufacturing offers a high potential in aerospace industry due to its freedom of
design and the ability to manufacture complex and lightweight parts. The low number of
units, high quality standards and fast response time are special challenges that have to be met
especially in the Maintenance, Repair and Overhaul sector. Thus, companies have to decide at
which point it is economic to apply Additive Manufacturing. However, companies lack
experience on this new technology. This is why a tool is required that takes into account the
above mentioned crucial points and supports the decision process. The paper analyzes
aviation’s characteristics with regard to Additive Manufacturing. The structure of current
MRO repair workflows is investigated to identify a feasible application for Additive
Manufacturing. Additionally the supply chain will be examined to indicate the benefit which
the technology can generate in this highly demanding field. The findings are integrated into a
methodology that supports the decision whether to apply Additive Manufacturing on the basis
of costs, time and quality.Mechanical Engineerin
Percolation of Immobile Domains in Supercooled Thin Polymeric Films
We present an analysis of heterogeneous dynamics in molecular dynamics
simulations of a thin polymeric film, supported by an absorbing structured
surface. Near the glass transition "immobile" domains occur throughout the
film, yet the probability of their occurrence decreasing with larger distance
from the surface. Still, enough immobile domains are located near the free
surface to cause them to percolate in the direction perpendicular to surface,
at a temperature near the glass transition temperature. This result is in
agreement with a recent theoretical model of glass transition
Rapid and efficient stable gene transfer to mesenchymal stromal cells using a modified foamy virus vector
Mesenchymal stromal cells (MSCs) hold great promise for regenerative medicine. Stable ex vivo gene transfer to MSCs could improve the outcome and scope of MSC therapy, but current vectors require multiple rounds of transduction, involve genotoxic viral promoters and/or the addition of cytotoxic cationic polymers in order to achieve efficient transduction. We describe a self-inactivating foamy virus vector (FVV), incorporating the simian macaque foamy virus envelope and using physiological promoters, which efficiently transduces murine MSCs (mMSCs) in a single-round. High and sustained expression of the transgene, whether GFP or the lysosomal enzyme, arylsulphatase A (ARSA), was achieved. Defining MSC characteristics (surface marker expression and differentiation potential), as well as long-term engraftment and distribution in the murine brain following intracerebroventricular delivery, are unaffected by FVV transduction. Similarly, greater than 95% of human MSCs (hMSCs) were stably transduced using the same vector, facilitating human application. This work describes the best stable gene transfer vector available for mMSCs and hMSCs
Minimal Interspecies Interaction Adjustment (MIIA): Inference of Neighbor-Dependent Interactions in Microbial Communities
An intriguing aspect in microbial communities is that pairwise interactions can be influenced by neighboring species. This creates context dependencies for microbial interactions that are based on the functional composition of the community. Context dependent interactions are ecologically important and clearly present in nature, yet firmly established theoretical methods are lacking from many modern computational investigations. Here, we propose a novel network inference method that enables predictions for interspecies interactions affected by shifts in community composition and species populations. Our approach first identifies interspecies interactions in binary communities, which is subsequently used as a basis to infer modulation in more complex multi-species communities based on the assumption that microbes minimize adjustments of pairwise interactions in response to neighbor species. We termed this rule-based inference minimal interspecies interaction adjustment (MIIA). Our critical assessment of MIIA has produced reliable predictions of shifting interspecies interactions that are dependent on the functional role of neighbor organisms. We also show how MIIA has been applied to a microbial community composed of competing soil bacteria to elucidate a new finding that – in many cases – adding fewer competitors could impose more significant impact on binary interactions. The ability to predict membership-dependent community behavior is expected to help deepen our understanding of how microbiomes are organized in nature and how they may be designed and/or controlled in the future
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Impact and Influence Factors of Additive Manufacturing on Product Lifecycle Costs
At first sight the direct costs of Additive Manufacturing (AM) seem too high in comparison to
traditional manufacturing. Considering the whole lifecycle costs of parts changes the point of
view. Due to the modification of the new production process and new supply chains during a
parts lifecycle, producing companies can strongly benefit from AM. Therefore, a costing
model for assessing lifecycle costs with regard to specific applications and branches has been
developed. The costing model represents the advantages of AM monetary. For the evaluation
of this model and the influence factors, different case studies have been performed including
different approaches in part redesign. Deeper research is and will be carried out with respect
to the AM building rates and the comparability of various AM machines, as these facts are
hardly comparable for end users. This paper will present the methodology as well as the
results of the case studies conducted over the whole product lifecycle.Mechanical Engineerin
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