3,011 research outputs found

    Entrepreneurial orientation and the threat of imitation: the influence of upstream and downstream capabilities

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    This paper uncovers the complexity between Entrepreneurial Orientation (EO) and performance. The paper explores the effect of the threat of imitation, which is a key external factor to explain competitive dynamics, and hence highlights effectiveness of EO. Also the paper accounts for the role of upstream (technical) and downstream (marketing) capabilities as they influence effectiveness of EO. Our results show that, under threat of imitation, downstream marketing capabilities facilitate taping into opportunities derived from EO, which positively affects performance. Conversely, available upstream technical capabilities do not aim at EO when imitation threats exist in the environment. Of importance is that we question the complexity between EO and performance can be better understood using a configurational approach

    Sweet Wines Produced by an Innovative Winemaking Procedure: Colour, Active Odorants and Sensory Profile

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    The colour, aroma-active compounds and sensory properties of sweet wines from Pedro Ximenez grapes produced by means of an innovative winemaking procedure, based on controlled chamber-drying of grapes, partial fermentation of the must (to 4% or 8% vol ethanol) and subsequent accelerated ageing by contact with oak chips, were studied. Fermentation made the musts less brown and more yellow, whereas ageing made them darker and increased their brown, reddish and yellowish hues. Overall, the musts fermented to 8% vol ethanol exhibited higher odour activity values (OAVs). In addition, the musts aged with oak chips were slightly different from those without chips. Expert tasters gave the highest scores to the musts fermented to 8% (v/v) ethanol with 2 g/L of oak chips added. The winemaking process studied would allow the existing range of sweet wines from dried grapes to be expanded by using a fast, flexible, hygienic procedure

    Controlling thought and action : a perspective from khat users and cocaine users

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    The mechanisms that control thought and action vary with the fluctuating and dynamic nature of both internal physiological states and external environmental constraints. Psychoactive drugs have the ability to alter mood state or behavior by acting directly on these mechanisms. The alteration of cognitive processes is a core deficit in drug abuse that leads to a failure in regulating behavior. This thesis investigates whether the abuse of stimulant drugs like khat or cocaine somehow impact the processes that coordinate and combine information from different cognitive systems: cognitive control. In addition, we review the behavioral and physiological effects of the natural psychomotor stimulants khat and the cathinone-derived designer drug mephedrone.University of Granada and Universiteit LeidenUBL - phd migration 201

    Constructing Formally Verified Reasoners for the ALC Description Logic

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    AbstractDescription Logics are a family of logics used to represent and reason about conceptual and terminological knowledge. Recently, its importance has been increased since they are used as a basis for the Ontology Web Language (OWL) used for the Semantic Web. In previous work, we have developed in PVS a generic framework for reasoning in the ALC description logic, proving its termination, soundness and completeness. In this paper we present the construction, from the generic framework, of a formally verified generic tableau-based algorithm for checking satisfiability of ALC-concepts. We do it using a methodology of refinements to transfer the properties from the framework to the algorithm. We also obtain some verified reasoners from the algorithm by a process of instantiation

    Productividad de la rotación anual raigrás- maíz en galicia: evaluación durante cinco años en regadío y secano y bajo dos sistemas de siembra

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    Es un estudio sobre la productividad de la rotación anual raigrás- maíz en galicia: evaluación durante cinco años en regadío y secano y bajo dos sistemas de siembr

    Historia del paisaje vegetal y acción antrópica en el Cerro Genciana (Sierra de Guadarrama, Madrid) durante el Holoceno reciente

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    Validation and Search of the Ideal Cut-Off of the Sysmex UF-1000i (R) Flow Cytometer for the Diagnosis of Urinary Tract Infection in a Tertiary Hospital in Spain

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    Urinary tract infections (UTI) are one of the most prevalent infections. A rapid and reliable screening method is useful to screen out negative samples. The objective of this study was to validate the Sysmex flow cytometer UF-1000i by evaluating its accuracy, linearity and carry-over; and define an optimal cut-off value to be used in routine practice in our hospital. For the validation of the UF-1000i cytometer, precision, linearity and carry-over were studied in samples with different counts of bacteria, leukocytes and erythrocytes. Between March and June 2016, urine samples were tested in the Clinical Microbiology Laboratory at University Miguel Servet Hospital, in Spain. Samples were analyzed with the Sysmex UF-1000i cytometer, and cultured. Growth of >= 10(5) CFUs/mL was considered positive. The validation study reveals that the precision in all the variables is acceptable; that there is a good linearity in the dilutions performed, obtaining values almost identical to those theoretically expected; and for the carry-over has practically null values. A total of 1, 220 urine specimens were included, of which 213 (17.4%) were culture positive. The optimal cut-off point of the bacteria-leukocyte combination was 138.8 bacteria or 119.8 leukocytes with an S and E of 95.3 and 70.4%, respectively. The UF-1000i cytometer is a valuable method to screen urine samples to effectively rule out UTI and, may contribute to the reduction of unnecessary urine cultures

    A new accounting framework for assessing forest footprint of nations

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    n a tele-coupled and globalized World, understanding the links between demand for wood products and land use is becoming challenging. World's economies are increasingly open and interconnected, and international trade flows of wood products are continuously growing. The increasing resource consumption of humanity is increasingly dependent on international trade. In this context, the study of forest products demand from a global-multi-regional perspective emerges as a critical issue to achieve the goal of sustainable consumption and production. In this paper, we introduce a novel accounting framework for assessing the forest footprint of nations. The method combines Multi-regional Input-Output techniques and detailed data from the Food and Agriculture Organization of the United Nations on production, consumption and bilateral trade of primary, intermediate and final wood products, advancing with respect to existing approaches with these practical distinctions for more accurate computations. The approach tracks resource flows along the global supply chain and provides detailed information on the production, transformation, international trade, and final use of 20 forest products in 223 countries, having also much wider coverage than most previous studies. We test this framework to analyse forest footprint of nations in the year 2014, showing that 22 Million hectares (Mha) of forest were harvested for the extraction of roundwood for global demand, being 9.1 Mha to satisfy the foreign demand of wood products (42% of the total forestland harvested area). Harvested forestland is concentrated in America (32%), Asia (29%) and Europe (28%), representing Africa (7%) and Oceania (4%). More than 50% of the reported forest area harvested worldwide is located in USA (15%), China (14%); Russia (11%) and Canada (8%). In terms of forest footprint, Asia shows the highest share of the total forest footprint (44%), followed by America (25%), Europe (21%), Africa (7%) and Oceania (2%). Country-wise, half is concentrated in China (24%), USA (16%), India (5%), and Russia (5%).This article was developed under Letter of Agreement between the Food and Agriculture Organization of the United Nations (FAO, UN-REDD Programme) and the Basque Centre for Climate Change (BC3). The authors thank the staff of the FAO and BC3 for their comments, discussions and suggestions on this report. We are especially grateful to Malgorzata Buszko-Briggs, Tina Vahanen and Caroline Merle (FAO Forestry Department) for their contribution to frame and coordinate the research, and to Salar Tayyib, Daniela Di Filippo, Tomasz Filipczuk (FAO Statistics Division) and Arvydas Lebedys (FAO Forestry Department) for providing datasets and for their discussions and comments on data and methodological issues. The authors also thank the support of the Spanish Ministry of Science, Innovation, and Universities, through the project MALCON, RTI 2018-099858-A-I00, the Spanish State Research Agency through María de Maeztu Excellence Unit accreditation 2018–2022 (Ref. MDM-2017-0714), funded by MCIN/AEI/10.13039/501100011033, the Basque Government BERC 2018-2021 Programme, and the EU H2020 project LOCOMOTION GA no 821105
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