101,986 research outputs found
Some Thoughts on the Turkish Electricity Distribution Industry
No full textOver the past decade or so, the electricity industry of the Republic of Turkey (and indeed the world) has undergone profound reform in its structure, ownership and mindset. Increasing public concern about efficiency in the sector has led Turkey to discard the traditional model of a vertically integrated industry subject to cost-based regulation in favor of the unbundling of activities and the introduction of competition where it is possible. The industry has been structurally separated into generation, transmission, distribution and retail segments. The competitive segments of the industry (generation and retail) are planed to progressively expose to competition; the monopoly segments (especially, distribution) are to be reoriented to foster competition. Further, the ownership of the industry is under increasing pressure to move away from the public domain into the private one. The present article not only presents an analysis of the Turkish distribution sector and proposed privatization process but also provides some guidelines for policy makers.Turkey; Electricity distribution; Energy policy
Effects of geometry and orientation of food products on heating uniformity during radio frequency heating
No full textIn radio frequency (RF) assisted heat treatment of food products, heating behavior depends on the composition and geometry of a product. In this study, the effect of salt added to a food simulant on its dielectric properties and penetration depth (dp) were determined across a temperature range from 5 to 80 °C. Three primitive geometries (cube, cylinder and sphere) of a food simulant having a standardised volume (3.98 × 10−4 m3) heated in a custom-built 50 Ω RF system to investigate the impact of sample geometry and orientation on power absorption and heating uniformity. Experimental results revealed vertical oriented cylinder samples followed by cubes showed better temperature uniformity. The temperature at the core of food simulant samples after 6 min RF heating using 500 W power was 44 ± 7.1 °C, 45.3 ± 0.9 °C and 52.9 ± 3.5 °C in cube, cylinder, and sphere sample, respectively. However, the sphere sample was characterized by having the hottest spot at the bottom section. RF power level also played a significant role in heating uniformity with lower power input resulting not only in a slower heating rate but also in less uniform temperature distribution. This study provided a potential insight on the use of food simulants for evaluating RF heating design and performances
A paper on the unsettled question of Turkish electricity market: Balancing and settlement system (Part I)
No full textTurkish electricity market law (EML) came into force in 2001 aiming at establishing a financially strong, stable, transparent and competitive electricity market based on bilateral contracts. Also, a balancing and settlement system (BSS) was put into practice in November 2004 to create a market where uncontracted generation can be traded, and actual implementation of the BSS started on August, 1st 2006 following a 21-month virtual implementation period. However, BSS has always been criticized from its beginning as transferring excessive profits to private generation companies. The present paper analyzes the implementation of BSS and argues that current BSS not only undermines the healthy development of the electricity market in Turkey but also prevents power investments due to uncertainties it created. It concludes that since the inconsistency between the objectives of EML and results of BSS in practice is obvious, Turkish policy makers need to modify current electricity market policy in line with suggestions presented in the paper.Balancing and settlement; Turkey; Electricity wholesale market
An Expose of Bioenergy and its Potential and Utilization in Turkey
No full textTurkey is heavily dependent on expensive imported energy resources (oil, gas and coal) that place a big burden on the economy. Air pollution is also becoming a great environmental concern in the country. In this regard, renewable energy resources appear to be one of the most efficient and effective solutions for clean and sustainable energy development in Turkey. Turkey's renewable sources are the second largest source for energy production after coal. About two-thirds of the renewable energy produced is obtained from bioenergy, which is used to meet a variety of energy needs, including generating electricity, heating homes, fueling vehicles and providing process heat for industrial facilities. The amount of usable bioenergy potential of Turkey is approximately 17 Mtoe. This article not only presents a review of the potential and utilization of the bioenergy in Turkey but also provides some guidelines for policy makers.Bioenergy; Biomass; Turkey
Evolution of the electronic structure and properties of charged titanium doped aluminum nanoclusters
No full textWOS: 000324471100077A systematic study of the titanium doped aluminum clusters with various spin multiplicities have been performed by using Density Functional Theory calculations at the B3LYP/6-311++G(d,p) level. The HOMO-LUMO energy gap, ionization potential (IP), electron affinity (EA), Adiabatic Electron Affinity (AEA), Vertical Electron Affinity (VDE) and vertical detachment energy (VDE) are also computed for the most stable isomer of each cluster. (C) 2013 Elsevier B.V. All rights reserved.Ahi Evran UniversityAhi Evran University [FEN. 4003.12.013]Y. Erdogdu would like to thank Ahi Evran University Research Fund for its financial support. Project No. FEN. 4003.12.013. Computing resources used in this work were provided by the National Center for High Performance Computing of Turkey (UYBHM)
Structural, calorimetric and vibrational investigations of 2,3 and 4-hydroxyanilinium perchlorate: A theoretical and experimental study
No full textWOS: 000300600500022Complexes of perchloric acid with interesting physical properties are investigated in details. Single crystals of 2-hydroxyanilinium perchlorate (abbreviated as 2HAP-ClO4), 3-hydroxyanilinium perchlorate (abbreviated as 3HAP-ClO4), and 4-hydroxyanilinium perchlorate (abbreviated as 4HAP-ClO4) were grown by the slow evaporation technique and vibrational spectral analysis was carried out using Far-IR and Fourier transform IR spectroscopy. The density functional theoretical (DFT) computations were also performed at the B3LYP/6-311++G(d,p) level to derive the equilibrium geometry, vibrational wavenumbers and intensities. The detailed interpretation of the vibrational spectra has been carried out with the aid of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology. (C) 2011 Elsevier B.V. All rights reserved.Ahi Evran UniversityAhi Evran University; National Science Centre [N N507 2218 40]The author (Y. Erdogdu) would like to thank Ahi Evran University Research Fund for its financial support. The work was financially supported by National Science Centre (Project No. N N507 2218 40)
Information Behavior during the COVID19 Pandemic among Turkish Speakers in Germany. Results of a Cross-Sectional Study
No full textNeugebauer T, Erdogdu, Oezer I, Aksakal T, et al. Informationsverhalten während der COVID- 19-Pandemie bei türkischsprachigen Personen in Deutschland. Ergebnisse einer Querschnittsstudie. Gesundheitswesen. 2022;84(08/09):773
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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