94 research outputs found

    Calcareous Bio-Concretions in the Northern Adriatic Sea: Habitat Types, Environmental Factors that Influence Habitat Distributions, and Predictive Modeling

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    Habitat classifications provide guidelines for mapping and comparing marine resources across geographic regions. Calcareous bio-concretions and their associated biota have not been exhaustively categorized. Furthermore, for management and conservation purposes, species and habitat mapping is critical. Recently, several developments have occurred in the field of predictive habitat modeling, and multiple methods are available. In this study, we defined the habitats constituting northern Adriatic biogenic reefs and created a predictive habitat distribution model. We used an updated dataset of the epibenthic assemblages to define the habitats, which we verified using the fuzzy k-means (FKM) clustering method. Redundancy analysis was employed to model the relationships between the environmental descriptors and the FKM membership grades. Predictive modelling was carried out to map habitats across the basin. Habitat A (opportunistic macroalgae, encrusting Porifera, bioeroders) characterizes reefs closest to the coastline, which are affected by coastal currents and river inputs. Habitat B is distinguished by massive Porifera, erect Tunicata, and noncalcareous encrusting algae (Peyssonnelia spp.). Habitat C (non-articulated coralline, Polycitor adriaticus) is predicted in deeper areas. The onshore-offshore gradient explains the variability of the assemblages because of the influence of coastal freshwater, which is the main driver of nutrient dynamics. This model supports the interpretation of Habitat A and C as the extremes of a gradient that characterizes the epibenthic assemblages, while Habitat B demonstrates intermediate characteristics. Areas of transition are a natural feature of the marine environment and may include a mixture of habitats and species. The habitats proposed are easy to identify in the field, are related to different environmental features, and may be suitable for application in studies focused on other geographic areas. The habitat model outputs provide insight into the environmental drivers that control the distribution of the habitat and can be used to guide future research efforts and cost-effective management and conservation plans

    Foreign Direct Investment and Economic Growth: New Evidence from Post-Socialist Transition Countries

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    In this article, we revisit classic sociological debates regarding the growth effects of Foreign Direct Investment (FDI). First, we identify a series of theoretical and empirical issues that halted sociological research on the developmental consequences of FDI. Second, we illustrate that post-socialist transition (PST) provides a historically novel opportunity to reinvigorate the debate. These countries experienced rapid industrialization but nearly zero FDI under socialism, and we can therefore observe changes in output as FDI accumulates in real time and effectively control for alternative sources of underdevelopment that might otherwise become conflated with FDI. We then estimate growth models that correct for biases owing to country- and period-specific heterogeneity and endogeneity in the FDI→ growth link. Our results suggest that FDI penetration reduces economic growth in the short and long term, and are robust to alternative choices of measurement and econometric specification. We conclude by implicating these findings in debates about post-socialist transition and economic growth, and by posing questions for future research. © The Author 2014. Published by Oxford University Press on behalf of the University of North Carolina at Chapel Hill. All rights reserved

    CHALLENGES AND OPPORTUNITIES FOR THE SLOVENIAN ELECTRICITY MARKET

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    Slovenija je nakon osamostaljenja prilikom priprema za uključenje u Europsku uniju krenula na put institucionalnog i organizacijskog preoblikovanja elektroenergetskog sektora sukladno europskim smjernicama i direktivama. Pri tome je morala pratiti osnovni cilj, to jest, kako s uvođenjem tržišnih odnosa unutar elektroprivrednih djelatnosti i između elektroprivrede i potrošača postići konkurentne cijene električne energije i na taj način sniziti troškove te povećati dodanu vrijednost i konkurentnost gospodarstva. Poslovni rezultati elektroenergetskog sektora ukazuju na uspješnost restrukturiranja. Slovenska se elektroprivreda ubrzano priprema na nove izazove elektroenergetskog sektora – prije svega potpuno otvaranje tržišta i tržišno dodjeljivanje prekograničnih prijenosnih kapaciteta, nakon 1. srpnja 2007. godineFollowing independence and during the period of preparation for entry into the European Union, Slovenia embarked upon the institutional and organizational reconstruction of the electricity sector, pursuant to European guidelines and directives. The basic goals were to achieve competitive electricity prices, and so reduce costs and increase the added value and competitiveness of the economy through the introduction of market relations within the operations of the electric power industry and between the electric power industry and electricity consumers. The performance of the electricity sector is an indication of the success of this reconstruction. The Slovenian electric power industry has accelerated preparations for the new challenges confronting the electricity sector - first of all the complete opening of the market and the market allocation of cross-border transmission capacities after July 1, 2007

    The Great Separation: Top Earner Segregation at Work in High-Income Countries

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    Analyzing linked employer-employee panel administrative databases, we study the evolving isolation of higher earners from other employees in eleven countries: Canada, Czechia, Denmark, France, Germany, Hungary, Japan, Norway, Spain, South Korea, and Sweden. We find in almost all countries a growing workplace isolation of top earners and dramatically declining exposure of top earners to bottom earners. We compare these trends to segregation based on occupational class, education, age, gender, and nativity, finding that the rise in top earner isolation is much more dramatic and general across countries. We find that residential segregation is also growing, although more slowly than segregation at work, with top earners and bottom earners increasingly living in different distinct municipalities. While work and residential segregation are correlated, statistical modeling suggests that the primary causal effect is from work to residential segregation. These findings open up a future research program on the causes and consequences of top earner segregation.En nous appuyant sur des données administratives longitudinales employeur–employés, nous analysons l’évolution de la ségrégation sociale des salariés à hauts salaires dans onze pays: Allemagne, Canada, Corée du Sud, Danemark, Espagne, France, Hongrie, Japon, Norvège, République tchèque et Suède. Nous constatons dans presque tous les pays une forte augmentation de l’entre soi des salariés bien payés sur le lieu de travail et une diminution spectaculaire de leur exposition aux bas salaires. Nous comparons ces tendances à l’évolution de la ségrégation fondée sur la catégorie sociale, l’éducation, l’âge, le sexe et le statut migratoire, et nous constatons que l’augmentation de l’entre soi des hauts salaires est celle qui est la plus prononcée et la plus générale. Nous montrons que la ségrégation résidentielle se développe aussi, bien que plus lentement que la ségrégation au travail, avec les hauts et les bas salaires vivant de plus en plus dans des municipalités distinctes. Ségrégation au travail et ségrégation résidentielle sont corrélées. Mais nos modèles statistiques suggèrent aussi que la principale relation de causalité va de la ségrégation au travail vers la ségrégation résidentielle. Ces résultats ouvrent la voie à un futur programme de recherche sur les causes et les conséquences de la ségrégation des hauts salaires.1 Introduction 2 From ethnic residential segregation to earnings segregation at work 3 Administrative data for estimating exposure measures 4 A strong increase in earnings segregation at work 5 A robust trend 17 French robustness tests 6 A specific trend 7 The link between work and residential segregation 8 Elements for a research program on the causes and consequences of increasing segregation at work The roots of growing earnings segregation at work The consequences of growing earnings segregation at work Appendices A1 Data sources and sample definition A2 Demonstration of the symmetry of relative exposure gRh = hRg A3 Figure construction A4 French robustness checks Supplementary figures and tables Reference

    Signalling Demand for Foreign Investment: Postsocialist Countries in the Global Bilateral Investment Treaties Network

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    A unique dataset on bilateral investment treaties provides a novel source of evidence on the link between neoliberal globalisation and market transition. We argue that postsocialist countries of Europe and Eurasia, more than other developing regions in the world, signed such treaties to signal demand for foreign investment in the spirit of neoliberalism. We calculated the density of the whole BIT network since its inception in 1959 to 2009, and density and centrality of different regional blocks within it, and found strong support for our argument. Yet, even if bilateral investment treaties are designed to promote foreign direct investment, dynamic panel regression models show that signing them does not automatically translate into foreign direct investment inflows for postsocialist European and Eurasian countries in the 1990–2010 period

    SSR and AFLP based genetic diversity of soybean germplasm differing in photoperiod sensitivity

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    Forty-four soybean genotypes with different photoperiod response were selected after screening of 1000 soybean accessions under artificial condition and were profiled using 40 SSR and 5 AFLP primer pairs. The average polymorphism information content (PIC) for SSR and AFLP marker systems was 0.507 and 0.120, respectively. Clustering of genotypes was done using UPGMA method for SSR and AFLP and correlation was 0.337 and 0.504, respectively. Mantel's correlation coefficients between Jaccard's similarity coefficient and the cophenetic values were fairly high in both the marker systems (SSR = 0.924; AFLP = 0.958) indicating very good fit for the clustering pattern. UPGMA based cluster analysis classified soybean genotypes into four major groups with fairly moderate bootstrap support. These major clusters corresponded with the photoperiod response and place of origin. The results indicate that the photoperiod insensitive genotypes, 11/2/1939 (EC 325097) and MACS 330 would be better choice for broadening the genetic base of soybean for this trait
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