23,864 research outputs found

    Rumo aos desafios da economia circular : ferramentas de apoio a uma nova estratégia na prática de design

    Get PDF
    ABSTRACT : The circular economy is a new strategic concept to meet society's needs in a more efficient and sustainable manner based in decoupling the economic growth and welfare from the increase in the consumption of natural resources. It implies the transition from the traditional linear model to a more innovative and circular approach in the development of the economy by designing new products, new services, and new systems, supported, in most cases, by the re-thinking and creation of new business models. Designers and product developers have an important and crucial role to achieve a successful and wide implementation of the concept which has to be accepted and applied in practice by businesses along the whole value chain and meet the current and future needs of consumers and the society. Currently, several methods, principles, practices, tools, training initiatives, and many resources are being developed globally as a result of the wide exploitation of the concept, but there is still a large gap between what is available to companies and designers, and what is applied in practice on product and service development. This paper reflects part of the PhD research project under development by the authors which is based on the promotion of the design practice within Circular Economy. It explores the results of the review of circularity tools available that can be used by design professionals to systematize and guide their development process. The analysis will support the development of a toolkit and guidelines oriented for the practical implementation of the circular economy in the development of innovative and efficient products and services. (Camocho, Ferreira, & Vicente, 2018).A economia circular é um novo conceito estratégico que visa responder às necessidades da sociedade de uma forma mais eficiente e sustentável que se baseia na dissociação entre crescimento económico e bem-estar do aumento do consumo de recursos naturais. Esta transição, do modelo linear tradicional para uma abordagem mais inovadora e circular no desenvolvimento da economia implica o desenvolvimento de novos produtos, novos serviços e novos sistemas, apoiados, na maioria dos casos, no repensar e na criação de novos modelos de negócio. Os designers e os responsáveis pelo desenvolvimento de produtos têm um papel importante e crucial para alcançar uma implementação ampla e bem-sucedida do conceito. Este deve ser aceite e aplicado na prática pelas empresas ao longo de toda a cadeia de valor atendendo às necessidades atuais e futuras dos consumidores e da sociedade. Atualmente, vários métodos, princípios, práticas, ferramentas, iniciativas de formação e outros recursos têm sido desenvolvidos globalmente como resultado da ampla exploração do conceito, no entanto, ainda existe uma grande lacuna entre o que está disponível para empresas e designers e o que é aplicado na prática no desenvolvimento de produtos e serviços. Este artigo reflete parte do projeto de investigação de doutoramento em desenvolvimento pelos autores, o qual se baseia na promoção da prática de design no âmbito da Economia Circular. Explora os resultados da revisão de ferramentas de circularidade disponíveis que podem ser aplicadas pelos profissionais de design na sistematização e orientação do processo de desenvolvimento. Esta análise irá apoiar o desenvolvimento de um conjunto de ferramentas e orientações para a implementação prática da economia circular no desenvolvimento de produtos e serviços mais inovadores e mais eficientes. (Camocho, Ferreira & Vicente, 2018).info:eu-repo/semantics/publishedVersio

    Can Compulsory Military Service Raise Civilian Wages? Evidence from the Peacetime Draft in Portugal

    Get PDF
    Although the practice of military conscription was widespread during most of the past century, credible evidence on the effects of mandatory service is limited. Angrist (1990) showed that the Vietnam-era draft in the U.S. lowered the early-career wages of conscripts, a finding he attributed to the low value of military experience. More recent studies have found a mixed pattern of effects, with both negative (the Netherlands) and positive (in Sweden) earnings impacts. Even among Vietnam era draftees, Angrist and Chen (2011) find that the net effect on earnings by age 50 is close to zero. We provide new evidence on the long-term impacts of peacetime conscription in a "low education" labor market, using longitudinal data for Portuguese men born in 1967. These men were inducted at a relatively late age (21), allowing us to use pre- conscription wages as a control for potential ability differences between conscripts and non- conscripts. Our estimates of the average impact of military service for men who had entered the labor market by age 21 are slightly positive (1-2 percent) but not significantly different from zero throughout the period from 2 to 20 years after their service. These small average effects arise from a significantly positive later-life impact for men with only primary education, coupled with a zero-effect for men with higher education. The positive impacts for less-educated men suggest that mandatory service can be a valuable experience for poorly-educated men who might otherwise spend their careers in low-level jobs.quasi-differences, longitudinal earnings, military conscription, sensitivity analysis

    Can Compulsory Military Service Increase Civilian Wages? Evidence from the Peacetime Draft in Portugal

    Get PDF
    Although military conscription was widespread during most of the past century, credible evidence on the effects of mandatory service is limited. We provide new evidence on the long-term effects of peacetime conscription, using longitudinal data for Portuguese men born in 1967. These men were inducted at a relatively late age (21), allowing us to use pre-conscription wages to control for ability differences between conscripts and non-conscripts. We find that the average impact of military service for men who were working prior to age 21 is close to zero throughout the period from 2 to 20 years after their service. These small average effects arise from a significant 4-5 percentage point impact for men with only primary education, coupled with a zero-effect for men with higher education. The positive impacts for less-educated men suggest that mandatory service can be a valuable experience for those who might otherwise spend their careers in low-level jobs.

    The Effects of Maize Trade with Malawi on Price Levels in Mozambique: Implications for Trade and Development Policy

    Get PDF
    Resultados das investigações do Departamento de Análise de Políticas MAP-Direcção de Economíafood security, food policy, Mozambique, maize trade, International Relations/Trade, Q18,

    Long Term Consequences of Natural Resource Booms for Human Capital Accumulation

    Get PDF
    Tight labour markets driven by resource booms could increase the opportunity cost of schooling and crowd out human capital formation. For oil producing economies like the Province of Alberta, the OPEC oil shocks of 1973 to 1981 may have had an adverse long term effect on the productivity of the labor force if the oil boom resulted in workers reducing their ultimate investment in human capital rather than merely altering the timing of schooling. We analyze the effect of this decade long oil-boom on the long-term human capital investments and productivity for Alberta birth cohorts that were of normal schooling ages before, during and after the oil boom. Our findings suggest that resource booms may change the timing of schooling but they do not reduce the total accumulation of human capital.Resource booms, long term human capital accumulation, OPEC oil crisis

    Non-decoupling effects of SUSY in the physics of Higgs bosons and their phenomenological implications

    Get PDF
    We consider a plausible scenario in the Minimal Supersymmetric Standard Model (MSSM) where all the genuine supersymmetric (SUSY) particles are heavier than the electroweak scale. In this situation, indirect searches via their radiative corrections to low energy observables are complementary to direct searches, and they can be crucial if the SUSY masses are at the TeV energy range. We summarize the most relevant heavy SUSY radiative effects in Higgs boson physics and emphasize those that manifest a non-decoupling behaviour. We focus, in particular, on the SUSY-QCD non-decoupling effects in fermionic Higgs decays, flavour changing Higgs decays and Yukawa couplings. Some of their phenomenological implications at future colliders are also studied.Comment: Invited talk given by M. J. Herrero at the X Mexican School of Particles and Fields, Playa del Carmen, Mexico, November 200
    corecore