1000 resultados para Comerç electrònic -- TFM


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Este proyecto nace de la necesidad de realizar una integración de los sistemas informáticos de una empresa en una multinacional; las empresas disponen de servicios de outsourcing en sistemas de información. Al tratarse de una integración operativa, sólo trataremos de trasladar los servicios de centro de atención al usuario, soporte local y ofimática desde un outsourcing de servicios a otro, añadiendo los cambios de procesos necesarios para disponer de un único entorno de trabajo. El cambio de entorno de trabajo se ha de realizar sin perdida de disponibilidad ni de información.

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Aquest projecte neix per facilitar l’ús de la “Guia per a l’avaluació de competències als treballs de final de grau i màster a les enginyeries” elaborada per un grup de professors de sis universitats públiques catalanes, de tres titulacions d’Enginyeria (Enginyeria Informàtica, Enginyeria de Telecomunicacions i Enginyeria Química). Per facilitar l'ús de la Guia s’ha implementat aquesta aplicació web que permet definir de forma senzilla i efectiva els procediments per a realitzar l'avaluació de competències en els Treballs de Fi de Grau (TFG) i de Fi de Màster (TFM).

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En aquest treball, s’ha dissenyat un mòdul d’acondicionament a fi de millorar les mesures de conductivitat realitzades amb un AFM (Microscopi de Forces Atòmiques). L’equip actual disposa d’un preamplificador de baix soroll amb un guany de 10 10V/A. Donat que els corrents que es pretenen mesurar són extremadament petits (~pA), s’ha dissenyat un filtre per eliminar diferents fonts de soroll, com ara el soroll que introdueix la xarxa elèctrica a 50Hz. Es pretén reduir aquesta component freqüencial un factor mínim de 10 (20dB). També s’ha afegit un filtre passa baixos per eliminar els soroll que es troba fora de l’amplada de banda del preamplificador. S’ha introduït una etapa d’amplificació de guany variable: 1, 10 i 100 per augmentar la flexibilitat de l’equip i finalment també s’ha dissenyat una etapa per eliminar la tensió d’offset d’aquest amplificador. L’abast del treball anirà des del disseny fins la implementació final sobre una placa PCB.

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Increasing evidence support the claim that international trade enhances innovation and productivity growth through an increase in competition. This paper develops a two-country endogenous growth model, with firm specific R&D and a continuum of oligopolistic sectors under Cournot competition to provide a theoretical support to this claim. Since countries are assumed to produce the same set of varieties, trade openness makes markets more competitive, reducing prices and increasing quantities. Under Cournot competition, trade is pro-competitive. Since firms undertake cost reducing innovations, the increase in production induced by a more competitive market push firms to innovate more. Consequently, a reduction on trade barriers enhances growth by reducing domestic firm's market power.

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Within only two decades olive oil developed from a niche product which could hardly be found in food stores outside the producing regions towards an integrated component in the diets of industrial countries. This paper discusses the impacts of the promotion of the “healthy Mediterranean diet” on land use and agro-ecosystems in the producing countries. It examines the dynamics of olive oil production, trade and consumption in the EU15 in the period 1972 to 2003 and the links between dietary patterns, trade and land use. It analyses the underlying socio-economic driving forces behind the increasing spatial disconnect between production and consumption of olive oil in the EU15 and in particular in Spain, the world largest producer during the last three decades. In the observed period olive oil consumption increased 16 fold in the non-producing EU15 countries. In the geographically limited producing regions like Spain, the 5 fold increase in export production was associated with the rapid industrialization of olive production, the conversion of vast Mediterranean landscapes to olive monocultures and a range of environmental pressures. High amounts of subsidies of the European Common Agricultural Policy and feedback loops within production and consumption systems were driving the transformation of the olive oil system. Our analysis indicates the process of change was not immediately driven by increases in demand for olive oil in non-producing countries, but rather by the institutional setting of the European Union and by concerted political interventions.

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Global financial imbalances receive a great deal of attention in relation to the emerging economies China and India. This chapter analyzes this relation, but argues first that they are actually re-balancing the existing structural inequality in the world economy, in which for so long only the Western economies and Japan dominated economic growth and international trade, moving towards a more multi-polar world economy. China in particular, with its rapid export-led growth, has indeed been part and parcel of the emerging financial imbalances, feeding the ‘over-consumption’ in the US and using its accumulating international reserves in buying US-treasury bonds. Finance therefore is moving to the economy that ‘least needs it’. This imbalance can only be redressed if the US (and some of the other OECD countries) start saving more and consuming less (and become more competitive), with China further stimulating domestic demand (which it already did in response to the crisis). China and to a lesser extend India, as emerging large economies and a more important roles in global markets, also contribute to new imbalances, such as the influence of the insatiable appetite for resources (carbon-hydrates, minerals and bio-mass) of these relatively energy-inefficient economies, while at the same time attracting an increasing share of FDI towards them. The chapter finally raises the issue that these three mentioned imbalances make it more difficult for developing countries (except for those who are resource-rich) to get access to the necessary development finance.

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Es desenvolupa l'aplicació GestFrio per donar una solució informàtica actualitzada i personalitzada a una empresa de comerç d'embotits. Es pretén controlar tots els moviments generats per la compravenda del producte mantenint en tot moment la traçabilitat de les partides de mercaderia. D'aquesta manera es podrà treballar amb sistemes de qualitat.

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El Dret Financer-Tributari d’un estat membre es doblega a les directrius i als objectius d’harmonització contemplats al bloc normatiu comunitari de la Unió Europea. La incidència i l’impacte del Dret Comunitari sobre la sobirania fiscal dels seus integrants és evident, sotmetent i delimitant determinantment les mesures fiscals a finalitats extrafiscals. Un clar exemple d’aquest fenomen el constitueix la qualificació del règim espanyol d’amortització fiscal del Fons de Comerç Financer Internacional (previst a l’article 12.5 del TRLIS) com ajut d’Estat per part de la Comissió Europea. L’anàlisi jurídic que aborda aquest treball sobre l’evolució i Decisió final d’aquest expedient d’ajut d’Estat en particular, permet concloure que, l’existència, d’una banda, d’una concepció genèrica i indeterminada de la institució d’ ajut d’Estat i, de l’altre, d’un soft law comunitari que dóna contingut a l’esmentada institució i que ha estat evacuat per el propi organisme encarregat de decidir sobre aquests expedients (la Comissió Europea), esbossen un instrument discrecional d’harmonització fiscal negativa en seu de la imposició directa al marc de la Unió Europea. En efecte, la presència de la regla d’unanimitat en la presa de decisions en matèria tributaria des de els organismes comunitaris i l’absència d’una norma d’harmonització comunitària en seu d’imposició directa, propicien una notable inseguretat jurídica a l’hora de dissenyar beneficis fiscals per part dels legisladors d’un Estat. Mesures fiscals, que en cas de ser qualificades contràries a l’ordenament comunitari per part de la Comissió Europea, com al cas que ens ocuparà aquí, despleguen conseqüències especialment greus per als operadors econòmics que s’han beneficiat d’aquesta i que distorsionen la seva voluntat a la presa de decisions a posteriori i amb efectes retroactius. És necessari als efectes de dotar una major seguretat jurídica al sistema comunitari d’imposició directa, la substitució de la regla d’unanimitat per la de majories simples o qualificades, la voluntat de cedir parcel•les de sobirania fiscal per part dels Estats membre i Reglaments, per tal d’evitar d’arrel el fenomen de la desharmonització en aquest àmbit, així com l’ús abusiu d’instruments arbitraris d’harmonització fiscal negativa.

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We examine the impact of real oil price shocks on labor market flows in the U.S. We first use smooth transition regression (STR) models to investigate to what extent oil prices can be considered as a driving force of labor market fluctuations. Then we develop and calibrate a modified version of Pissarides' (2000) model with energy costs, which we simulate in response to shocks mimicking the behavior of the actual oil price shocks. We find that (i) these shocks are an important driving force of job market flows; (ii) the job finding probability is the main transmission mechanism of such shocks; and (iii) they bring a new amplification mechanism for the volatility and should thus be seen as complementary of labor productivity shocks. Overall we conclude that shocks in oil prices cannot be neglected in explaining cyclical labor adjustments in the U.S.

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The availability of rich firm-level data sets has recently led researchers to uncover new evidence on the effects of trade liberalization. First, trade openness forces the least productive firms to exit the market. Secondly, it induces surviving firms to increase their innovation efforts and thirdly, it increases the degree of product market competition. In this paper we propose a model aimed at providing a coherent interpretation of these findings. We introducing firm heterogeneity into an innovation-driven growth model, where incumbent firms operating in oligopolistic industries perform cost-reducing innovations. In this framework, trade liberalization leads to higher product market competition, lower markups and higher quantity produced. These changes in markups and quantities, in turn, promote innovation and productivity growth through a direct competition effect, based on the increase in the size of the market, and a selection effect, produced by the reallocation of resources towards more productive firms. Calibrated to match US aggregate and firm-level statistics, the model predicts that a 10 percent reduction in variable trade costs reduces markups by 1:15 percent, firm surviving probabilities by 1 percent, and induces an increase in productivity growth of about 13 percent. More than 90 percent of the trade-induced growth increase can be attributed to the selection effect.

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This article focuses on the institutions of transatlantic aviation since 1945, and aims at extracting from this historical process topical policy implications. Using the methodology of an analytic narrative, we describe and explain the creation of the international cartel institutions in the 1940s, their operation throughout the 1950s and 60s, their increasing vulnerability in the 1970s, and then the progressive liberalization of the whole system. Our analytic narrative has a natural end, marked by the signing of an Open Skies Agreement between the US and the EU in 2007. We place particular explanatory power on (a) the progressive liberalization of the US domestic market, and (b) the active role of the European Commission in Europe. More specifically, we explain these developments using two frameworks. First, a “political limit pricing” model, which seemed promising, then failed, and then seemed promising again because it failed. Second, a strategic bargaining model inspired by Susanne Schmidt’s analysis of how the European Commission uses the threat of infringement proceedings to force member governments into line and obtain the sole negotiating power in transatlantic aviation.

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Aquest treball tracta sobre els negocis ètnics al districte de Ciutat Vella de Barcelona i la seva contribució al miracle regional. L'assumpte ha guanyat rellevància en els últims 20 anys, a jutjar pel nombre d'immigrants a Ciutat Vella. L'estudi del nexe entre etnicitat i esperit empresarial a Ciutat Vella, ha llançat una llum tremenda sobre les dimensions culturals de les iniciatives empresarials, inclòs el paper que té la pròpia identitat ètnica en la recerca i explotació d'oportunitats empresarials, i el paper de les comunitats ètniques en la prestació de suport financer, laboral i altres estratègies, en el context del seu propi entorn, així com en les seves relacions amb els clients que estan fora de la seva pròpia comunitat.

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Campaign efforts by NGOs initially put conflict diamonds on the global radar screen in the late 1990s. In response, the Kimberley Process (KP), a negotiation forum between states, NGOs, and industry, was formed to discuss possible solutions to curb the trade in conflict diamonds. Less than three years later, a voluntary, global certification named the Kimberley Process Certification Scheme (KPCS) was adopted. The KPCS regulates the trade of rough diamonds by certifying all legitimate diamonds. This paper outlines the problem of conflict diamonds, how a global campaign raised awareness about the issue, and how the process of solution building unfolded in the KP. My analysis focuses on the diverse set of actors (NGOs, states, and industry) and their changing interactions over the course of the campaign and global regulation efforts. I conclude with several key lessons that capture important elements observed in this case study.

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Concerns on the clustering of retail industries and professional services in main streets had traditionally been the public interest rationale for supporting distance regulations. Although many geographic restrictions have been suppressed, deregulation has hinged mostly upon the theory results on the natural tendency of outlets to differentiate spatially. Empirical evidence has so far offered mixed results. Using the case of deregulation of pharmacy establishment in a region of Spain, we empirically show how pharmacy locations scatter, and that there is not rationale for distance regulation apart from the underlying private interest of very few incumbents.

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Network airlines have been increasingly focusing their operations on hub airports through the exploitation of connecting traffic, allowing them to take advantage of economies of traffic density, which are unequivocal in the airline industry. Less attention has been devoted to airlines? decisions on point-to-point thin routes, which could be served using different aircraft technologies and different business models. This paper examines, both theoretically and empirically, the impact on airlines ?networks of the two major innovations in the airline industry in the last two decades: the regional jet technology and the low-cost business model. We show that, under certain circumstances, direct services on point-to-point thin routes can be viable and thus airlines may be interested in deviating passengers out of the hub.