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Domestic Welfare Effects of Foreign Strategic Trade Policies
( Philippe Kohler ),( Michael O. Moore ) 세종대학교 경제통합연구소 2003 Journal of Economic Integration Vol.18 No.3
Within a duopoly strategic trade policy model, we analyze the effect of foreign strategic trade policies on domestic welfare when the domestic government pursues a laissez-faire import policy. With Cournot competition and domestic production and consumption, an increase in the foreign strategic export subsidy increases domestic welfare when the domestic price exceeds the foreign firm marginal cost. With Bertrand competition, an increase in the foreign strategic export tax has ambiguous effects on domestic welfare and depends on the degree of product differentiation and domestic cross-price elasticity of demand between domestic and foreign goods.
Event date model: a robust Bayesian tool for chronology building
Philippe, Lanos,Anne, Philippe The Korean Statistical Society 2018 Communications for statistical applications and me Vol.25 No.2
We propose a robust event date model to estimate the date of a target event by a combination of individual dates obtained from archaeological artifacts assumed to be contemporaneous. These dates are affected by errors of different types: laboratory and calibration curve errors, irreducible errors related to contaminations, and taphonomic disturbances, hence the possible presence of outliers. Modeling based on a hierarchical Bayesian statistical approach provides a simple way to automatically penalize outlying data without having to remove them from the dataset. Prior information on individual irreducible errors is introduced using a uniform shrinkage density with minimal assumptions about Bayesian parameters. We show that the event date model is more robust than models implemented in BCal or OxCal, although it generally yields less precise credibility intervals. The model is extended in the case of stratigraphic sequences that involve several events with temporal order constraints (relative dating), or with duration, hiatus constraints. Calculations are based on Markov chain Monte Carlo (MCMC) numerical techniques and can be performed using ChronoModel software which is freeware, open source and cross-platform. Features of the software are presented in Vibet et al. (ChronoModel v1.5 user's manual, 2016). We finally compare our prior on event dates implemented in the ChronoModel with the prior in BCal and OxCal which involves supplementary parameters defined as boundaries to phases or sequences.
Philippe Faradja,Guoyuan Qi 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
This paper investigates the robustness with plant parameter variation of a sliding mode controller (SMC) that was recently proposed. Nonlinear chaotic systems are used as they are sensitive to parameter change and initial conditions. Synchronization of chaotic systems is used as it solves the tracking problem in a dynamic environment. The convergence time as a measure of robustness is also observed. Overall it is shown illustratively that the controller performs well but not as good as model free controller (MFC). The convergence and convergence time of the SMC, thus its robustness can be improved with an appropriate choice of the sliding surface. Simulation tests are conducted in MATLAB to support the study..
Philippe Chereau,Jonas Hoffmann,Isabella Soscia 글로벌지식마케팅경영학회 2015 Global Fashion Management Conference Vol.2015 No.06
Over the years, luxury has built-up a reputation as recession proof industry. Even though the industry growth has slowed down in the mid 2000s, luxury firms have managed to cope with economic contingencies and shortening traditional demand by widening their clientele base to prestige mass consumption ― the “masstige clientele”. Doing so, luxury firms have been pursuing a dual strategy by wooing aspirational consumers as well as their traditional elite customers, thus managing the challenge of handling both a differentiation strategy based on scarcity and uniqueness, and increased volumes of sales. This has been a trend in mature markets such as Europe, the United States and Japan, but was significantly fostered by expanding into emerging markets. Sector specialists thus expect China to remain a major structural growth area in the medium term, where the number of both high-end clients as well as new aspirational consumers will substantially increase and influence firms strategy.