Industrie de l'armement

thumb|upright=1.25|Sgraffite chez le fabricant d'armes L. Sevart, à Liège. L'industrie de l'armement est la branche du secteur industriel consacrée à la fabrication et au commerce des armes dans les domaines civil et militaire et de systèmes et fournitures militaires. Production d'armes Selon l'ONG Oxfam, d'armes légères sont disséminées à travers le monde (une pour dix personnes) en 2013. La production de cartouches militaires est de quatorze milliards par an. Une large partie des ventes d'armes est issue des surplus militaires ; en effet, au lieu de détruire des armes anciennes ou surnuméraires, les États revendent en général leurs stocks. Le Nigeria, la Lettonie et l'Afrique du Sud sont les seuls États détruisant leurs excédents ou les armes saisies. À travers le monde, dans plus de 90 pays produisent des armes légères. Dans certains de ces États, les réglementations commerciales sont quasi inexistantes. Principales sociétés du secteur de la Défense. Voi

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The influence of industry downturns on the propensity of product versus process innovation

Christopher Tucci, Cristiano Zazzara

This article sheds light on how industry fluctuations affect firms' propensity to innovate. We test two seemingly conflicting arguments that suggest how firms are more or less inclined to engage in innovation activities during industry fluctuations. By studying a panel of 622 Italian manufacturing firms during the period 1995-2003, we show how differentiating between product and process innovation may help reconcile the theory of opportunity cost of innovation with the cash-flow effect argument. We find that industry downturns are related to product and process innovation in different ways: firms tend to invest in product innovation rather than process innovation in downturns. The findings have implications for both theory (showing when the opportunity cost of innovation dominates) and research design (showing the importance of both the input and output measures in innovation studies and how they might influence the results).

Oxford University Press2014

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Database of Embodied Quantity Outputs: Lowering Material Impacts Through Engineering

Catherine Elvire L. De Wolf, Corentin Jean Dominique Fivet, Endrit Hoxha

Current studies and performance labels focus mainly on the operational energy demand of buildings due to heating, cooling, ventilation, lighting, and hot water, but they rarely account for embodied impacts. Performing a life cycle assessment (LCA) on an entire building structure, let alone a building, requires time and data, both of which are often lacking for practitioners in the construction industry. Limited knowledge on the embodied carbon equivalent of building structures led to the benchmarking effort of the database of embodied quantity outputs (DEQO), developed by the first author over the last 6 years in close collaboration with industry and academia. DEQO col- lects material quantities for existing buildings in a robust way directly from industry. This paper presents the lessons learned from this da- tabase to define the next steps for structural engineers to lower the environmental impacts related to the material quantities in their projects. To create confidence and comparability in the results, recommendations are given such as implementing uncertainty analysis into practice to avoid inaccurate comparisons with a false sense of precision.

2020

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Risk, Unexpected Uncertainty, and Estimation Uncertainty: Bayesian Learning in Unstable Settings

Recently, evidence has emerged that humans approach learning using Bayesian updating rather than (model-free) reinforcement algorithms in a six-arm restless bandit problem. Here, we investigate what this implies for human appreciation of uncertainty. In our task, a Bayesian learner distinguishes three equally salient levels of uncertainty. First, the Bayesian perceives irreducible uncertainty or risk: even knowing the payoff probabilities of a given arm, the outcome remains uncertain. Second, there is (parameter) estimation uncertainty or ambiguity: payoff probabilities are unknown and need to be estimated. Third, the outcome probabilities of the arms change: the sudden jumps are referred to as unexpected uncertainty. We document how the three levels of uncertainty evolved during the course of our experiment and how it affected the learning rate. We then zoom in on estimation uncertainty, which has been suggested to be a driving force in exploration, in spite of evidence of widespread aversion to ambiguity. Our data corroborate the latter. We discuss neural evidence that foreshadowed the ability of humans to distinguish between the three levels of uncertainty. Finally, we investigate the boundaries of human capacity to implement Bayesian learning. We repeat the experiment with different instructions, reflecting varying levels of structural uncertainty. Under this fourth notion of uncertainty, choices were no better explained by Bayesian updating than by (model-free) reinforcement learning. Exit questionnaires revealed that participants remained unaware of the presence of unexpected uncertainty and failed to acquire the right model with which to implement Bayesian updating.

2011

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FIN-523: Global business environment

This course gives the framework and tools for understanding economic events, taking financial decisions and evaluating investment opportunities in a global economy. It builds up an integrated model of exchange rate and output determination, and explains how monetary and fiscal policies work.

AR-367: Environmental histories

Le cours vise à familiariser les étudiants avec l'histoire de l'environnement et des paysages, et avec la façon dont les différentes préoccupations environnementales, qui vont affecter de plus en plus fortement la conception des villes et de l'architecture.

Russie

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Armée

Une armée est une organisation structurée d'individus armés visant à conquérir ou à défendre un territoire, détruire ou protéger d'autres unités militaires ou des unités civiles (entreprises, admini

BAE Systems

BAE Systems est une entreprise britannique travaillant dans les secteurs de la défense et de l'aérospatial, dont le siège social se trouve à Farnborough (Hampshire). L'entreprise a également des intér