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A graphical method to estimate the efficiency of a solar concentrator
Nijegorodov, N.; Jain, P.K.; Devan, K.R.S. - In: Renewable Energy 5 (1994) 1, pp. 373-375
A graphical method to estimate the efficiency of a solar concentrator used for heating and boiling liquids is described. The method involves the measuring of temperature of stagnated liquid in the absorber as a function of time at noon. The graphically estimated efficiency is within 5% of the...
Persistent link: https://www.econbiz.de/10010805831
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Synthesis of heat exchanger networks featuring batch streams
Wang, Yufei; Wei, Ying; Feng, Xiao; Chu, Khim Hoong - In: Applied Energy 114 (2014) C, pp. 30-44
A new method based on the heat duty–time (Q–t) diagram is proposed for heat integration of heat exchanger networks … network can be easily obtained. The method can be used both for direct and indirect heat integration of batch streams. For … indirect heat integration, the heat degradation of intermediate media is considered. A case study on optimizing the heat …
Persistent link: https://www.econbiz.de/10010729370
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Confidence Region for long memory based on Inverting Bootstrap Tests: an application to Stock Market Indices
Peretti, Christian De; Siani, Carole - Centre d'Études des Politiques Économiques (EPEE), … - 2008
In the context of long memory, the finite-sample distortion of statistic distributions is so large, that bootstrap confidence intervals (percentile and percentile-t) for the long memory parameter do not perform better than the corresponding asymptotic confidence interval. In this paper, we...
Persistent link: https://www.econbiz.de/10010640923
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Using Cost-Volume-Profit Analysis in Decision Making
Buşan, Gabriela; Dina, Ionela-Claudia - In: Annals of the University of Petrosani, Economics 9 (2009) 3, pp. 103-106
The cost-volume-profit study the manner how evolve the total revenues, the total costs and operating profit, as changes occur in volume production, sale price, the unit variable cost and / or fixed costs of a product. Managers use this analysis to answer different questions like: How will...
Persistent link: https://www.econbiz.de/10008470149
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Graphical Methods for Investigating the Finite-sample Properties of Confidence Regions: an application to long memory
Peretti, Christian de; Siani, Carole - Society for Computational Economics - SCE - 2006
In the literature, there are not satisfactory methods for measuring and presenting the performance of confidence regions. In this paper, techniques for measuring effectiveness of confidence regions and for the graphical display of simulation evidence concerning the coverage and effectiveness of...
Persistent link: https://www.econbiz.de/10005170548
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Assessment of different methods used to estimate Weibull distribution parameters for wind speed in Zafarana wind farm, Suez Gulf, Egypt
Saleh, H.; Abou El-Azm Aly, A.; Abdel-Hady, S. - In: Energy 44 (2012) 1, pp. 710-719
The use of wind as an energy source is becoming popular because of its non-polluting and renewable features. There is an urgent request to develop site-based estimation on wind engineering, which can be used for optimal design of wind turbines and wind farming. The wind speed for Zafarana...
Persistent link: https://www.econbiz.de/10011053410
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Agricultural and food trade in Central and Eastern Europe: the case of Slovenian intra-industry trade
Bojnec, Štefan; Hartmann, Monika - 2004
One of the striking features in Central and Eastern European (CEE) countries is the deterioration of their agricultural and food trade balance during transition to a market economy as im-ports increased faster than exports or exports even declined. This paper investigates the Slovenian...
Persistent link: https://www.econbiz.de/10010299334
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Integration von Geflüchteten und die Rolle der Aufnahmegesellschaft: Konzeptionelle Überlegungen und ihre Anwendung auf ländliche Räume
Glorius, Birgit; Bürer, Miriam; Schneider, Hanne - 2019
bisherigen Forschungsstand zur Integration von Zugewanderten in ländlichen Räumen und diskutieren Forschungsdesiderate. Auf … Einstellungsmuster und der lokalen Diskurse und ihrer Auswirkungen auf die Integration von Geflüchteten Anwendung finden wird. …This working paper addresses the attitudes of the host society as an important component of immigrant integration …
Persistent link: https://www.econbiz.de/10011993024
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Grenzüberschreitende Lebenswelten an der luxemburgischen Grenze? Eine empirische Annäherung am Beispiel von Grenzpendlern und Wohnmigranten
Wille, Christian; Roos, Ursula - In: Border Futures - Zukunft Grenze - Avenir Frontière: …, (pp. 168-189). 2018
Luxemburg ist in bemerkenswerter Weise von grenzüberschreitenden Mobilitätsphänomenen geprägt, zu denen Grenzpendler und Wohnmigranten zählen. Während beide Gruppen überwiegend unter sozioökonomischen Aspekten betrachtet werden, nimmt dieser Beitrag eine soziokulturelle Perspektive ein....
Persistent link: https://www.econbiz.de/10011823506
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Flucht und Migration: Herausforderung für Bildung, Ausbildung und Arbeitsmarktpolitik
Walwei, Ulrich - In: Arbeit 25 (2016) 3-4, pp. 169-194
. Die These des Überblicksartikels lautet: Wenn die Integration geflüchteter Menschen in den Arbeitsmarkt erfolgreicher …
Persistent link: https://www.econbiz.de/10014586506