218 research outputs found

    Formulating genome-scale kinetic models in the post-genome era

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    The biological community is now awash in high-throughput data sets and is grappling with the challenge of integrating disparate data sets. Such integration has taken the form of statistical analysis of large data sets, or through the bottom–up reconstruction of reaction networks. While progress has been made with statistical and structural methods, large-scale systems have remained refractory to dynamic model building by traditional approaches. The availability of annotated genomes enabled the reconstruction of genome-scale networks, and now the availability of high-throughput metabolomic and fluxomic data along with thermodynamic information opens the possibility to build genome-scale kinetic models. We describe here a framework for building and analyzing such models. The mathematical analysis challenges are reflected in four foundational properties, (i) the decomposition of the Jacobian matrix into chemical, kinetic and thermodynamic information, (ii) the structural similarity between the stoichiometric matrix and the transpose of the gradient matrix, (iii) the duality transformations enabling either fluxes or concentrations to serve as the independent variables and (iv) the timescale hierarchy in biological networks. Recognition and appreciation of these properties highlight notable and challenging new in silico analysis issues

    Environmental regulation induced foreign direct investment

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    The last decade has witnessed a renewed interest in the relationship between environmental regulations and international capital flows. However, empirical studies have so far failed to find conclusive evidence for this so-called pollution haven or race to the bottom effect where foreign direct investment (FDI) is assumed to be attracted to low regulation countries, regions or states. In this paper we present a simple theoretical framework to demonstrate that greater stringency in environmental standards can lead to a strategic increase in capital inflows which we refer to as environmental regulation induced FDI. Our result reveals a possible explanation for the mixed results in the empirical literature and provides an illustration of the conditions under which environmental regulations in the host country can affect the location decision of foreign firms

    Structural change and foreign direct investment : globalization and regional economic integration

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    This paper investigates flows of inward and outward foreign direct investment (FDI) and FDI-to-GDP ratios in a sample of 62 countries over a 30 year time span. Using several endogenous structural break procedures (allowing for one and two break points), we find that: (1) the great majority of the series have structural breaks in the last 15 years, (2) post-break FDI and FDI/GDP ratios are substantially higher than the pre-break values, and (3) most breaks seem to be related to globalization, regional economic integration, economic growth, or political instability. Static and dynamic panel-data analy- ses accounting for and/or addressing endogeneity, simultaneity, nonstationar- ity, heterogeneity and cross-sectional dependence show that FDI is negatively related to exchange rate volatility and GDP per capita, but positively related to some regional integration agreements, trade openness, GDP, and GDP growth. Most notably, the European Union is the only regional economic integration unit found to consistently have significant and positive effects on FDI.info:eu-repo/semantics/publishedVersio

    The construction of art in the martial arts. An anthropological approach to Taekwondo

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    En este artículo analizamos por qué se denomina "artes" a las "artes marciales" a partir del estudio etnográfico del taekwondo. Consideramos que ambas son constructos culturales, deteniéndonos en particular en el estudio del desarrollo y cambio del taekwondo, originario de Corea, en la provincia de Alicante y el contexto español en las últimas cuatro décadas. En la actualidad encontramos dos discursos distintos: el que trasmiten los manuales y la industria cinematográfica -que se basa en un concepto de arte relacionado con las religiones budista y taoísta-, y el que expresan los practicantes -más vinculado a lo que conocemos por bellas artes-, reflejo de un proceso de adaptación cultural que tiende a enfatizar los elementos estéticos de estas prácticas.This paper discusses why "martial arts" are called "arts", from an ethnographic study of taekwondo. I believe that both are cultural constructs, studying particularly the development and change of taekwondo in the province of Alicante and in the Spanish context during the last four decades. Today two different discourses are transmitted, one by manuals and the other by the film industry—which is based on a concept of art related to Buddhist and Taoist religions— and what practitioners link more to what we know as Fine Arts, which are a reflection of a culture-adaptation process that tends to emphasize the aesthetic elements of these practices.Grupo de Investigación Antropología y Filosofía (SEJ-126). Universidad de Granad

    Threshold effect of foreign direct investment on environmental degradation

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    The aim of this paper is to investigate the threshold effect of foreign direct investment (FDI) on environmental degradation. In empirical analysis, FDI and environmental degradation are jointly determined under the given threshold variable and other exogenous variables. Using carbon dioxide (CO2) emissions per capita as a proxy for environmental degradation, the results show that increasing FDI worsens CO2 emissions after a threshold level of corruption has been reached. Our results demonstrate that increasing FDI will increase CO2 emissions when the degree of corruptibility is relatively high. The study suggests that further FDI and improved environmental quality are competing rather than compatible objectives in high-corruption countries and are compatible rather than competing objectives in low-corruption countries. Higher trade liberalization in low-corruption countries could contribute to negative environmental consequences because of the increased output or economic activity which results from increased trade. The robustness estimation confirms the evidence that pollution and economic development increase together up to a certain income level, after which the trend reverses.info:eu-repo/semantics/publishedVersio

    Organizing Engineering Work - A Comparative-Analysis

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    This article analyzes the organization of engineering work in six industrial capitalist countries. It identifies four major models for the organization of engineering work; the engineering profession did not succeed in achieving professional “closure” in any of the six countries under review. A review of the historical evolution of the organization of engineering work in each of the six countries reveals that engineering has been shaped by a complex interaction among the profession itself, employers, the state, labor, and preindustrial forces. However, none of the national variations on the four models for organizing engineering labor is stable or without internal contradiction because of the ambiguous “intermediate” position of engineers

    Multiple carbon accounting to support just and effective climate policies

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    Negotiating reductions in greenhouse gas emission involves the allocation of emissions and of emission reductions to specific agents, and notably, within the current UN framework, to associated countries. As production takes place in supply chains,increasingly extending over several countries, there are various options available in which emissions originating from one and the same activity may be attributed to different agents along the supply chain and thus to different countries. In this way, several distinct types of national carbon accounts can be constructed. We argue that these accounts will typically differ in the information they provide to individual countries on the effects their actions have on global emissions; and they may also, to varying degrees, prove useful in supporting the pursuit of an effective and just climate policy. None of the accounting systems, however, prove 'best' in achieving these aims under real-world circumstances; we thus suggest compiling reliable data to aid in the consistent calculation of multiple carbon accounts on a global level

    Crowds in or crowds out? The effect of foreign direct investment on domestic investment in Chinese cities

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    This study investigates the empirical relationship between foreign direct investment (FDI) and domestic investment (DI) in China using a comprehensive city-level panel over the period from 2003 to 2011. System-generalized method-of-moment estimation reveals mixed results. At the national level, FDI neither crowds in nor crowds out DI, indicating a neutral FDI–DI nexus. However, when the full sample is segmented by geographical topology, a positive and significant FDI–DI nexus can be found in eastern and, to a lesser extent, central cities. A negative, although insignificant, association is reported among western cities. Further, the empirical nexus is conditional on several local absorptive capacities including human capital, financial development, and institutional quality. These findings suggest that a region-based FDI strategy in general and local governments should strengthen their absorptive capacities to fully internalize FDI spillovers

    “The world around me”: The environment and single women

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    The “environment” has often been taken as a backdrop for feminist research and theory, as a setting within which issues of feminist concern are played out. This environment, however, is not a neutral setting; rather, research over the past 15 years has evidenced the assumptions about “a woman's place” as a man's wife literally built into women's worlds. Space speaks, and the stories it tells center around particular and identifiable assumptions about gender and where a woman “should” be, when, and with whom. Unmarried women are in a unique position in this environment: they are subjected not only to the economic disadvantages and social subjugation of being a woman, but also to the social and economic drawbacks of being single in a couple-oriented society and in an environment they see as not built for them. Although research exists on the sexism in the physical environment, on women's economic and social position, and on singlehood, a need exists to bridge these areas to explore how single women experience their singlehood, their womanhood, and the environment in their everyday lives and decision making. I conducted in-depth interviews with 25 single women, 23 white and 2 African-American women, about their experiences of living single. This article, based on the results of those interviews and a series of focus group discussions, examines how single women negotiate and respond to their necessary environmental decisions about housing, transportation, and leisure activities in an environment not likely to be conducive to their ways of life.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/45605/1/11199_2005_Article_BF01544591.pd
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