1,409 research outputs found

    Security Policy Consistency

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    With the advent of wide security platforms able to express simultaneously all the policies comprising an organization's global security policy, the problem of inconsistencies within security policies become harder and more relevant. We have defined a tool based on the CHR language which is able to detect several types of inconsistencies within and between security policies and other specifications, namely workflow specifications. Although the problem of security conflicts has been addressed by several authors, to our knowledge none has addressed the general problem of security inconsistencies, on its several definitions and target specifications.Comment: To appear in the first CL2000 workshop on Rule-Based Constraint Reasoning and Programmin

    Reinventarea industriei portugheze de tricotaje: cazul modelului de management al etichetei private Pedrosa & Rodrigues

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    During the first decade of this century, the Portuguese knitwear industry, and textile cluster, were strongly affected by globalisation and seemed destined to decline. The Portuguese knitwear industry developed for decades a business model based on price as the main competitive factor, and that model was no longer able to support competitiveness against low wages countries. Portuguese knitwear industry made a dramatic change towards a competition based on value to the client. The companies adopted as primary differentiation drives technological innovation, design, fashion, and services customer-oriented, together with more presence on international fairs and exhibitions. The new strategy resulted in the significant growth of exports that reached 40% from 2009 to 2018. The restructuring of the cluster, however, changed it significantly, and the number of companies was reduced by almost 50%. The competitive change made the entire Portuguese textile cluster an international case study where the modern concept of private label business model is central. The business model of private label adopted by the most competitive knitwear companies considered a full package of services to international clients. It integrated the collection’s design, raw materials development, superior finishing, careful and cost-effective confection and sophisticated logistics. Pedrosa & Rodrigues, SA. is a midcap company from Barcelos County, North of Portugal, and is a highly successful example of the new competitive paradigms. This new model is now leading the Portuguese knitwear industry to a higher level in the value chain and gives it a strong reputation worldwide.În primul deceniu al acestui secol, industria portugheză de tricotaje și clusterul textil au fost puternic afectate de globalizare și păreau să intre într-un declin. Industria portugheză de tricotaje a dezvoltat timp de decenii un model de afaceri bazat pe preț ca principal factor competitiv, iar acel model nu mai era capabil să susțină competitivitatea în țările cu salarii mici. Industria portugheză de tricotaje a făcut o schimbare dramatică către o concurență bazată pe valoare adăugată pentru client. Companiile au adoptat ca motor de diferențiere primară inovația tehnologică, designul, moda și serviciile orientate către client, împreună cu o mai mare prezență la târgurile și expozițiile internaționale. Noua strategie a avut ca rezultat o creștere semnificativă a exporturilor, care a atins 40% în perioada 2009–2018. Cu toate acestea, restructurarea clusterului a schimbat acest lucru în mod semnificativ, iar numărul companiilor a fost redus cu aproximativ 50%. Schimbarea concurențială a făcut ca întregul cluster textil portughez să devină un studiu de caz internațional, în care conceptul modern al modelului de afaceri cu etichetă privată este central. Modelul de afaceri cu etichetă privată adoptat de cele mai competitive companii de tricotaje a luat în considerare un pachet complet de servicii pentru clienții internaționali. A integrat designul colecției, dezvoltarea materiilor prime, finisaje superioare, produse atent create și rentabile, precum și logistică sofisticată. Pedrosa & Rodrigues SA este o întreprindere mijlocie din regiunea Barcelos, din nordul Portugaliei și este un exemplu de mare succes al noilor paradigme competitive. Acest nou model conduce acum industria portugheză de tricotaje la un nivel mai înalt în lanțul valoric și îi conferă o reputație puternică în întreaga lume.The authors gratefully acknowledge the Project UID/CTM/00264/2019 of 2C2T – Centro de Ciência e Tecnologia Têxtil, funded by National Founds through FCT/MCTES

    Hybrid GMR Sensor Detecting 950 pT/sqrt(Hz) at 1 Hz and Room Temperature.

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    Advances in the magnetic sensing technology have been driven by the increasing demand for the capability of measuring ultrasensitive magnetic fields. Among other emerging applications, the detection of magnetic fields in the picotesla range is crucial for biomedical applications. In this work Picosense reports a millimeter-scale, low-power hybrid magnetoresistive-piezoelectric magnetometer with subnanotesla sensitivity at low frequency. Through an innovative noise-cancelation mechanism, the 1/f noise in the MR sensors is surpassed by the mechanical modulation of the external magnetic fields in the high frequency regime. A modulation efficiency of 13% was obtained enabling a final device's sensitivity of ~950 pT/Hz1/2 at 1 Hz. This hybrid device proved to be capable of measuring biomagnetic signals generated in the heart in an unshielded environment. This result paves the way for the development of a portable, contactless, low-cost and low-power magnetocardiography device

    MACHADO DE ASSIS: OS PRIMEIROS PASSOS, O JORNALISMO POLÍTICO E A CENSURA TEATRAL

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    Joaquim Maria Machado de Assis, nascido em 21 de junho de  1839, na cidade do Rio de Janeiro, vivia com seus pais, como agregados, na chácara que pertencia à família de Maria José de Mendonça Barroso Pereira, viúva do brigadeiro Bento Barroso Pereira, senador do Império, duas vezes ministro da Guerra e uma vez ministro da Marinha de D. Pedro I. A madrinha, Maria José, e o padrinho, Joaquim Alberto Silveira, funcionário do Paço Imperial, emprestaram os seus nomes ao afilhado. Nesse mesmo ano, nasceram Casimiro de Abreu (4/1), Floriano Peixoto (30/4) e Tobias Barreto (7/6). No ano seguinte, em 23/7, houve a proclamação da maioridade do imperador Pedro II, aos quinze anos

    A CRIAÇÃO DO CONHECIMENTO ORGANIZACIONAL

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    Este texto busca aproximar a Filosofia das Ciências Sociais aplicadas, como é o caso da Administração. Um dos seus ramos, a teoria do conhecimento ou epistemologia fornece os elementos fundamentais para a construção do pensamento. No caso específico, as mudanças das formas de produzir bens e de organizar a produção nas organizações, tendo a tecnologia de informação e comunicação como um dos componentes principais, tem provocado um processo de desmaterialização dos bens concomitantemente com a crescente incorporação neles de conhecimento e informações. Na literatura econômica e de gestão, o conhecimento passaa ser considerado o principal ativo da empresa, fundamento estratégico para a sustentabilidade da firma, conceito esse restrito à competitividade e à produtividade de negócios. O saber adquirido pelo empregado fora da jornada de trabalho, denominado de conhecimento tático, passa a ser considerado um tipo de capital: o capital humano. Ele passa a ser um investimento fundamental à inovação de produtos e processos. O mercado editorial brasileiro está repleto de publicações sobre gestão do conhecimento. Uma das iniciais e expressivas edições sobre a criação do conhecimento nas organizações, dos professores Nonaka e Takeuchi, foivista, criticamente, à luz de saberes trazidos dos gregos antigos, passando por conceitos de razão e de racionalidade e seguindo por apresentação do capital humano e do conhecimento como valor.Palavras-chave: Conhecimento; Epistemologia; Gestão do conhecimento; Organização; Capital humano

    Eletrochoqueterapia

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    Eletrochoqueterapi

    Potentialities of lightweight construction solutions for sustainability

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    The amount of waste produced every year, the exhaustion of resources and the construction solutions currently used in construction may not be sustainable in the future. All these issues lead to the research on new construction techniques, on recycling of waste into useful materials, on re-use of construction materials, etc. Most of the new and innovative solutions arise from the general feeling that something should be done to change the conventional way of construction in order to give an answer to current society concerns: the reduction of energy consumption, the minimization of pollution problems, the maximisation of the use of renewable and/or recyclable materials, etc. The aim of this study is to evaluate the potentialities of using more lightweight construction solutions with respect to functional comfort criteria (thermal, acoustic and visual comfort) and to assess the relative merits of this type of construction in view of maximising sustainability. Beyond the structural behaviour of a building, the demand of a better habitat requires also a good performance in terms of serviceability. In this work, the performance of lightweight construction solutions (optimized for reducing environmental impact) and conventional construction solutions were compared under the energy costs point of view (construction and heating). The other parameters have also been analysed but are not shown here since they were considered not relevant for this analysis
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