3,386 research outputs found

    Competitiveness of milk and wine production and processing in Albania

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    This study provides an empirical assessment of the competitiveness of Albanian dairy and wine production, based on specifically collected survey data. For both product groups, the analysis is carried out on two levels: farm level production of raw material and processing and manufacturing of the final product in the food industry. In a third step, both levels are aggregated to analyse the competitiveness of the entire production chain for each product group. Overall, the wine sector appears in an economically more favourable situation than the milk sector. Although there is currently no relevant export of wine, there has been considerable in-vestment activity at the farm level and the harmonisation of quality standards with EU legislation is currently pursued. Grape processing is currently profitable. Small farm and herd sizes limit the profitability and efficiency of dairy farming. Fragmented and dispersed production units increase the costs of milk collection. International quality standards are by far not met. This is partially due to the high share of informally traded milk and the importance of direct sales to consumers. It is therefore unlikely that Albanian dairy products will become internationally competitive in the near future. -- G E R M A N V E R S I O N: Die vorliegende Studie beinhaltet eine Einschätzung der Wettbewerbsfähigkeit der albanischen Milch- und Weinproduktion, die sich auf spezifisch gesammelte Betriebsdaten stützt. Für beide Produktgruppen wird eine Analyse auf zwei Ebenen durchgeführt: Erzeugung der Rohprodukte und Verarbeitungsstufe. In einem dritten Schritt werden die Teilergebnisse der beiden Ebenen zu einer Gesamtbewertung der Wettbewerbsfähigkeit der jeweiligen Produktions- und Verarbei-tungskette zusammengeführt. Insgesamt präsentiert sich der albanische Weinsektor in ökono-misch günstigerer Verfassung als der Milchsektor. Auch wenn der Export von albanischem Wein derzeit keine Rolle spielt, werden die notwendigen rechtlichen Rahmenbedingungen für die Sicherung von Qualität und Herkunftsbezeichnung bei Wein werden derzeit geschaffen. Auf der Erzeugerebene wurden in den vergangenen Jahren bereits größere Investitionen durchge-führt. Die Verarbeitungsstufe weist positive wirtschaftliche Ergebnisse auf. Milchproduktion und -verarbeitung leiden unter mangelnden Hygienestandards und einem stark informell ge-prägten, untransparenten Markt für Frischprodukte. Unter diesen Bedingungen fällt es den Mol-kereien schwer, sich wirtschaftlich zu behaupten. Es ist daher nicht zu erwarten, dass albanische Milchprodukte in nächster Zeit international wettbewerbsfähig sein werden.Agricultural sector,competitiveness,milk,wine,Albania,Agrarsektor,Wettbewerbsfähigkeit,Milch,Wein,Albanien

    The role of agriculture in Central and Eastern European rural development: engine of change or social buffer?

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    This volume of proceedings, available both as hard copy and pdf , is an edited compilation of selected contributions to the IAMO Forum 2004, which will be held in Halle (Saale), Germany, at the Institute of Agricultural Development in Central and Eastern Europe from 4 to 6 November 2004. CONTENTS: The role of agriculture in Central and Eastern European rural development: an overview; Martin Petrick, Peter Weingarten. Subsistence Farming and Rural Unemployment - the Case of Slovakia; Gejza Blaas. Rural Development in Albania and the Role of Agriculture: a Case Study in the Prefecture of Elbasan; Vittorio Gallerani, Nada Krypa, Meri Raggi, Antonella Samoggia, Davide Viaggi. Agricultural Problems in Georgia and Strategic Policy Responses; Zurab Revishvili, Henry W. Kinnucan. The Role of Private Household Plots in Russian Rural Development; Galina Rodionova. Agriculture in Southeastern Poland - Main Problems of The Systemic Transformation Process; Janusz Zmija, Ewa Tyran. Factor Market Imperfections and Polarization of Agrarian Structures in Central and Eastern Europe; Alexander Sarris, Sara Savastano, Christian Tritten. Agricultural Credit Market in Poland - Experiences in the Market Economy; Alina Danilowska. Social Aspects of Agricultural Employment in the Czech Republic; Hana Horská, Daniela Spěšná, Jan Drlík, Radomír Koutný, Tomáš Ratinger. Lease as a Form of Land Consolidation in Moldavian Agriculture; Dragos Cimpoies, Grigore Baltag. Analysing Variation in Russian Dairy Farms, 1990-2001; Irina Bezlepkina, Ruud Huirne, Alfons Oude Lansink, Arie Oskam. The Role of Agriculture for Rural Development in a less favoured Rural Area: The Experience of Mecklenburg-Western Pomerania (Germany); Theodor Fock. Wine, Sand and Socialism: Some enduring Effects of Hungary's 'Flexible' Model of Collectivization; Chris Hann. Off-Farm Activities and Subsistence Farming in CEE Countries - A Statistical Approach; Franz Greif. Agricultural Productivity Growth: a Vehicle For Rural Poverty Reduction in Ukraine? Viktoriya Galushko, Stephan von Cramon-Taubadel. Institutional Factors Influencing Agricultural Sales of the Individual Farmers in Romania; Borbala Balint. Social Capital in Rural Areas of Latvia within the Context of Public Organisations; Modrite Pelše. The Effects of Social Capital on the Organization of Agricultural Enterprises and Rural Communities in Transition: the Case of Ukraine; Vladislav Valentinov, Tetyana Matsibora, Mykola Malik. Farm Tourism: Myth or Reality? Štefan Bojnec. Biomass Production as a Future Agricultural Development Factor in West Pomerania (Poland); Jaroslaw Senczyszyn, Agnieszka Brelik. Rural Implications of Foreign Direct Investments in the Food Industry of the Visegrad Countries; Csaba Jansik. The Impact of Information Society on Agriculture and Rural Areas Development; Anton Nedyalkov, Victoria Borisova. Agricultural Policy and Rural Development: Theoretical and Empirical Aspects; Heinz Ahrens. A Tailor-Made Common Agricultural Policy for the Accession Countries: Help or Harm for Agriculture in Eastern Europe? David Sedik. Evaluation of the Effects of Pre-Accession and Accession Instruments on the Development of the Northeast Region in Bulgaria; Plamen Mishev, Antoaneta Golemanova. Measures of Rural Development Policy in Russia; Alexander Petrikov. Priority Setting for Rural Development: an Interactive PC-Based Programming Approach; Dieter Kirschke, Astrid Häger, Kurt Jechlitschka, Stefan Wegener --

    Gait Generation and Optimization for Legged Robots

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    This paper presents a general framework for representing and generating gaitsfor legged robots. We introduce a convenient parametrization of gait generators as dynamical systems possessing specified stable limit cycles over an appropriate torus. Inspired by biology, this parametrization affords a continuous selection of operation within a coordination design plane spanned by axes that determine the mix of ”feedforward/feedback” and centralized/decentralized” control. Applying optimization to the parameterized gait generation system allowed RHex, our robotic hexapod, to learn new gaits demonstrating significant performance increases. For example, RHex can now run at 2.4m/s (up from 0.8m/s), run with a specific resistance of 0.6 (down from 2.0), climb 45◦ inclines (up from 25◦), and traverse 35◦ inclines (up from 15◦)

    Validation Studies of the ATLAS Pixel Detector Control System

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    The ATLAS pixel detector consists of 1744 identical silicon pixel modules arranged in three barrel layers providing coverage for the central region, and three disk layers on either side of the primary interaction point providing coverage of the forward regions. Once deployed into the experiment, the detector will employ optical data transfer, with the requisite powering being provided by a complex system of commercial and custom-made power supplies. However, during normal performance and production tests in the laboratory, only single modules are operated and electrical readout is used. In addition, standard laboratory power supplies are used. In contrast to these normal tests, the data discussed here was obtained from a multi-module assembly which was powered and read out using production items: the optical data path, the final design power supply system using close to final services, and the Detector Control System (DCS). To demonstrate the functionality of the pixel detector system a stepwise transition was made from the normal laboratory readout and power supply systems to the ones foreseen for the experiment, with validation of the data obtained at each transition.Comment: 8 pages, 8 figures, proceedings for the Pixel2005 worksho

    Automated Gait Adaptation for Legged Robots

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    Gait parameter adaptation on a physical robot is an error-prone, tedious and time-consuming process. In this paper we present a system for gait adaptation in our RHex series of hexapedal robots that renders this arduous process nearly autonomous. The robot adapts its gait parameters by recourse to a modified version of Nelder-Mead descent while managing its self-experiments and measuring the outcome by visual servoing within a partially engineered environment. The resulting performance gains extend considerably beyond what we have managed with hand tuning. For example, the hest hand tuned alternating tripod gaits never exceeded 0.8 m/s nor achieved specific resistance helow 2.0. In contrast, Nelder-Mead based tuning has yielded alternating tripod gaits at 2.7 m/s (well over 5 body lengths per second) and reduced specific resistance to 0.6 while requiring little human intervention at low and moderate speeds. Comparable gains have been achieved on the much larger ruggedized version of this machine

    K-Matrix Analysis of the (IJPC=00++{IJ}^{PC}=00^{++}) Amplitude in the Mass Region up to 1550 MeV

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    K-matrix analysis of the 00++00^{++} wave is performed in the channels ππ, KKˉ, ηη\pi\pi,~K\bar K,~\eta\eta and 4π4\pi in the mass region up to 1550 MeV. The fit is based on the following data: ppˉ (at rest)→π0π0π0p\bar p ~(at~rest)\to \pi^0\pi^0\pi^0, π0π0η, π0ηη\pi^0\pi^0\eta,~\pi^0\eta\eta [1,2], πN→ππN\pi N\to \pi\pi N [3,4], πN→KKˉN\pi N\to K\bar K N [5] and the inelastic cross section of the ππ\pi\pi interaction [6]. Simultaneous analysis of these data confirms the existence of the scalar resonances: f0(980), f0(1300)f_0(980),~f_0(1300) and f0(1500)f_0(1500), the poles of the amplitude being at the following complex masses (in MeV): (1008±10)−i(43±5)(1008\pm 10)- i(43\pm 5), (1290±25)−i(120±15)(1290\pm 25)-i(120\pm 15), and (1497±6)−i(61±5)(1497\pm 6)-i(61\pm 5). The fourth pole has sunk deeply into the complex plane: (1430±150)−i(600±100)(1430 \pm 150) - i(600\pm 100). Positions of the K-matrix poles (which are referred to the masses of bare states) are at 750±120750\pm 120 MeV, 1240±301240\pm 30 MeV, 1280±301280\pm 30 MeV and 1615±401615\pm 40 MeV. Coupling constants of the K-matrix poles to the ππ\pi\pi, ηη\eta\eta and KKˉK\bar K channels are found that allow us to analyze the quark and gluonic content of bare states. It is shown that f0bare(1240)f_0^{bare}(1240) and f0bare(1615)f_0^{bare}(1615) (which are strongly related to f0(1500)f_0(1500)) can be considered as good candidates for scalar glueball.Comment: 19 pages, LATEX, 6 figures in one uu-fil

    Validity of mortality risk prediction scores in critically ill patients with secondary pulmonary embolism

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    Herein, we assess the use of the Acute Physiology and Chronic Health Evaluation-IV (APACHE-IV) and pulmonary embolism (PE)–specific risk scores to predict mortality among intensive care unit (ICU) patients who developed secondary PE. This retrospective cohort study used information from 208 United States critical care units recorded in the eICU Collaborative Research Database during 2014 and 2015. We calculated APACHE-IV, Pulmonary Embolism Severity Index (PESI), simplified PESI (sPESI), and ICU-sPESI scores and compared their predicting performance using the area under the receiver operating characteristic (AUROC) curve. Of 812 patients included in our study, 150 died (mortality, 18.5% [95% CI, 15.8%-21.1%]). Compared to survivors, non-survivors had higher APACHE-IV (86 vs 52, P<0.001), PESI (170 vs 129, P<0.001), sPESI (2 vs 2, P<0.001), and ICU-sPESI (4 vs 2, P<0.001) scores. AUROCs were 0.790 (APACHE-IV); 0.737 (PESI); 0.726 (ICU-sPESI); and 0.620 (sPESI). APACHE-IV performed significantly better than all 3 PE-specific mortality scores (APACHE-IV vs PESI, P=0.041; APACHE-IV vs sPESI, P=0.001; and APACHE-IV vs ICU-sPESI, P=0.021). Both the PESI and ICU-sPESI outperformed the sPESI (PESI vs sPESI, P=0.001; ICU-sPESI vs sPESI, P<0.001). APACHE-IV score was found to be the best instrument for predicting mortality risk, but PESI and ICU-sPESI scores may be used when APACHE-IV is unavailable. sPESI AUROC suggests absence of sufficient discriminative value to be used as a predictor of mortality in patients with secondary PE.

    Development of Agricultural Market and Trade Policies in the CEE Candidate Countries.

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    This synthesis report focuses on the evolution of agricultural market and trade policies in the Central and Eastern European (CEE) candidate countries in the period 1997 to 2001. The developments were crucially influenced by (OECD, 2000a): ⢠the situation in world agricultural markets; ⢠the overall macroeconomic development in the countries considered; ⢠the prospective EU accession; ⢠bringing domestic agricultural policy in line with the Uruguay Agreement on Agriculture (URAA). High 1997 agricultural prices on world commodity markets were followed by a marked depression in 1998. With the exemption of milk products this trend continued in 1999. Likewise the economic and financial crisis in Russia had a considerable impact on agricultural policies. It hit the regions´ exports resulting in a decline in industrial as well as agricultural output1. Thus, compared to the previous years most of the CEE candidate countries experienced a slow down or even negative rates of growth in their Gross Domestic Product (GDP) in 1998 and 1999. In addition those countries felt increased budgetary pressures. Agricultural market and trade policies largely reacted to these developments. Border protection was increased in many countries in 1998. This was combined in some cases with export subsidies, and ad hoc producer aids to mitigate the adverse effects. The prospect of EU accession also had an influence on the agricultural policy design in the region with many countries implementing EU-type policy instruments. Thus, the importance of per hectare and per head payments increased in the region, quota like measures were implemented in some countries and as part of this development Estonia introduced tariffs for agro-food imports. Finally, many countries also continued to adjust their policies to comply with their commitments agreed to in the World Trade Organisation (WTO). Despite these general tendencies there are also differences in the development of agricultural policies between the various CEE candidates. Chapter 2 therefore provides an overview of the changes of agricultural market and trade policies in each of the 10 accession countries. It addresses the policy issues market access (e.g. tariffs, special safeguard measures), export subsidies (value and quantities) and domestic support (intervention policies, direct payments, input subsidies, production quotas). Chapter 3 provides a brief assessment of recent policy developments in the region in the light of EU accession and WTO commitments. The development of prices and values, e.g. export subsidies, agricultural support expenditure, were presented in the background papers provided by the country experts in current prices in national currencies. In this synthesis report they are in addition converted in Euro. This firstly allows for a better comparison among the CEE candidate countries as well as between those countries and the EU. Some of the accession countries still suffer from high inflation and thus a strong depreciation of their currency. Thus secondly, the conversion to Euros allows the comparisons to be made in real terms.Industrial Organization, International Development, Productivity Analysis,
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