Field Measurements of Spontaneous Potential (SP) for Smart Well Monitoring and Control. A Field Test in the UK Chalk Aquifer

Imperial Users onl

Quantum quenches in disordered systems: Approach to thermal equilibrium without a typical relaxation time

We study spectral properties and the dynamics after a quench of one-dimensional spinless fermions with short-range interactions and long-range random hopping. We show that a sufficiently fast decay of the hopping term promotes localization effects at finite temperature, which prevents thermalization even if the classical motion is chaotic. For slower decays, we find that thermalization does occur. However, within this model, the latter regime falls in an unexpected universality class, namely, observables exhibit a power-law (as opposed to an exponential) approach to their thermal expectation values.Comment: 5 pages, 5 figure

The choice of transport technology in the presence of exports and FDI

In a set-up with intermediate production, we analyze how a shipper's choice of transport technology, traditional versus modern, interacts with the mode of foreign expansion by an service firm, export versus foreign direct investment (FDI). In terms of the mode of foreign expansion by the service firm, we obtain that: due to trade in intermediate goods, trade and FDI can be complements; the export strategy dominates when the economies of scale at plant level are high and trade costs are low; the FDI strategy is preferable when market size is large and trade costs are intermediate. In what concerns the choice of transport technology by the shipper, we find that: the modern technology tends to be implemented in larger markets; economic integration can encourage the adoption of modern technology vis-à-vis the traditional one; the modern technology adoption is more likely for intermediate levels of transport costs. We then have that modern technology adoption usually occurs under the FDI strategy, since both emerge when trade costs are intermediate and market size is large.Transport Technology, Foreign Direct Investment, Trade, Service Sector, Firm Location.

La evaluación del alumno en un proceso de enseñanza-aprendizaje en la modalidad virtual.

Este artículo ofrece una propuesta enfocada a optimizar el proceso de evaluación sobre el aprovechamiento del alumno, en un ambiente virtual, mediante el concepto GROUPWARE: (Colaborativo/Cooperativo), técnicas de comunicación grupal (profesor/tutor-alumno, alumno-alumno, alumno-chat, programa, etc.), utilizando las Nuevas tecnologías de Información y las Comunicaciones [NTIC’s], como herramientas básicas, llevando el registro y seguimiento estadístico del aprovechamiento actitudinal del estudiante, posibilitando así, el uso y la construcción de índices significativos, seguros y fiables, que permitan al instructor/facilitador/tutor, gestionar de un diagnóstico, sobre el comportamiento, esfuerzo, dedicación y actitud del aprendiz, obteniendo como resultado la participación integra del alumno en los cursos tomados en la plataforma colaborativa permitiendo en consecuencia las medidas preventivas/correctivas sobre la conducta continuamente observada del alumno en el entorno en línea

The political and social philosophy of the Roman Catholic church from Leo XIII to the present

Thesis (M.A.)--Boston UniversityIn order that this problem of the political and social philosophy of the Roman Catholic Church from Leo XIII to the present be more fully understood, it will be necessary to examine and evaluate the political, social, religious, cultural and economic currents of the nineteenth century, although it must be admitted that many of these nineteenth century movements had their naissance in the latter half of the eighteenth century and even earlier

Research at the University of Wageningen, The Netherlands, and at CIAD Mazatlan, Mexico with regard to fish nutrition.

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Should governments help winners or losers?

One central result in the strategic trade literature is that governments should not support domestic ”losers” but domestic ”winners”. We show that when first-mover advantages are taken into account, the reverse holds, governments have stronger incentives to support domestic ”losers” that face foreign ”winners”. Accordingly, governments can play Stackelberg against foreign Stackelberg leaders to prevent them from playing Stackelberg against domestic Stackelberg followers

Media bias, news customization and competition

The media bias literature has focused its attention on single-ideology media firms. We analyze the incentives for media firms to adopt a multi-ideology strategy. A multi-ideology strategy occurs when a media firm adapts news to consumers’ political preferences. In this sense, news customization can reduce media bias, since media firms can cover a larger variety of political opinions. We show that although the incentives to customize are larger under duopoly than under monopoly, a monopolist might also end up offering customized news to consumers. In this sense, we argue that the competition policy for the media sector should take into consideration not only media concentration issues, but also the plurality of political opinions embraced inside a media firm

Media bias and news customization

In this paper we analyze the effects of news customization (tailoring news to consumers’ political preferences) on media bias. In particular, we extend Hotelling’s duopoly location model to include news customization. Customization occurs when a media firm supplies the market with a continuous line segment of political opinions (i.e.: multi-ideology firm), instead of just a single point on the line (i.e.: single-ideology firm) as in the standard Hotelling model. The customization strategy has some costs related to the adaptation of news to consumers’ political preferences, however, the advantage arises from the possibility to price discriminate between different consumers. In this set up, we show that the possibility to customize news by media firms does not reduce media bias. Accordingly, in order to avoid fierce price competition in the standard segment (which also reduces the revenues from price discrimination in the customized segment), firms decide not to cover a larger variety of political options