1,033 research outputs found
Catheter-based renal denervation for resistant hypertension: twenty-four month results of the EnligHTN™ I first-in-human study using a multi-electrode ablation system
No full textAbstract not availableCostas P. Tsioufis, Vasilios Papademetriou, Kyriakos S. Dimitriadis, Alexandros Kasiakogias, Dimitrios Tsiachris, Matthew I. Worthley, Ajay R. Sinhal, Derek P. Chew, Ian T. Meredith, Yuvi Malaiapan, Costas Thomopoulos, Ioannis Kallikazaros, Dimitrios Tousoulis, Stephen G. Worthle
The impact of Corporate Social Responsibility (CSR) policies on perceptions and behavioral intension of Greek consumers
No full textDuring the last five years Greece has witnessed the exposure of an unprecedented number of corporate related events that had a significant impact on the public opinion (huge financial scandals, various corruption accusations, etc). These events dramatically increased the negative perception of consumers towards large companies operating in Greece. Corporate Social Responsibility (CSR) may be considered as an effective initiative that protects and strengthens the image and reputation of implementing companies, especially at a time that their status has been severely damaged by numerous distressing reports. The World Business Council for Sustainable Development (2000) defines CSR as a business commitment that supports sustainable economic development and, at the same time, contributes to the quality of life of employees, their families, the local community and society in general. Companies that implement CSR try to establish a positive business reputation and enhance the corporate brand name by taking actions that lead in the development of a competitive advantage, while at the same time contribute to the demands of various third parties. These companies shift from solely focusing on profits and tend to include financial, environmental and social goals in their core business strategies. Therefore, many researchers argue that the CSR policy is an activity mutually beneficial for both the business and society. However, several doubts about the effectiveness of these policies are being expressed. The purpose of the present study is to measure the perceptions of consumers about Greek Large Companies (GLC) and examine the influence of the implementation of CSR policies on consumers’ perception and consumers’ behavioral intention. The results of the quantitative research (N=454) highlighted the negative perceptions of Greeks towards GLC but, at the same time, revealed the statistically significant positive effect of CSR policies on consumers’ perceptions and behavioral intention.Corporate Social Responsibility, CSR, consumer’s perceptions, behavioral intention, Greece
Babel, or the local distortion of the Greek language
No full textTitle: Βαβυλωνία ἤ ἡ κατά τόπους διαφθορά τῆς ἑλληνικῆς γλώσσας. Κωµωδία (Babel, or the local distortion of the Greek language: A comedy) Originally published: Ναύπλιο (Nafplio), Τυπογραφεῖsο Κωνσταντίνου Τόµπρα ἐκ Κυδωνιῶν καὶ Κωνσταντίνου Ἰωαννίδη ἐκ Σµύρνης, 1836 Language: Greek The excerpt used is from D. C. Vyzantios, Βαβυλωνία, introduction by Spyros Evangelatos (Athens: Εστία, 1993), pp.1–3. About the author Dimitrios Vyzantios (pseudonym of Dimitrios K. Hatziaslanis) [1790, Constantin..
Dimitrios Tsamis Karatasos : a symbol of Greek, Serbian and Bulgarian friendship
No full textTwo Serbian texts extol the contribution of Dimitrios Tsamis Karatasos to the Balkan joint effort to throw off the Ottoman yoke. These texts are analysed by the author within the historical framework of their period, so that the man’s personality and work may be accurately evaluated from a fresh viewpoint. More specifically, the author conducts a research on the tombstone of Dimitrios Tsamis Karatasos, which he discovered himself at Naoussa, and the octet engraved on it, which is also published here. The work is illustrated by seven plates, of which four have not been published previously
The Remains of authoritarianism : bureaucracy and civil society in post-authoritarian Greece
No full textDimitrios A. Sotiropoulos. 30 cm. He presented this paper at a seminar held at the Center on October 21, 1994. - T.p. Includes bibliographical references (p. 31-35
Study and modelling of the prefractionation and distillation of work-arising-gases-derived synthetic crude oil
No full textThe purpose of this study was to create a theoretical model for the distillation of synthetic crude oil (syncrude) into straight-run naphtha, kerosene and gas oil fractions, at a scale of 235 ktfeed/year. To that end, a process model was created that receives the output of a Co-LTFT process as raw feed. The raw feed was prefractionated to remove the majority of the unreacted syngas, inert gases, light hydrocarbons (C1-C4) and water. The remaining stream was syncrude, primarily composed of alkanes and 1-alkenes in the C5-50 range.A Base Case was designed in ASPEN plus, with a distillation unit with two steam strippers and three pumparounds. The goal was to receive the syncrude and separate naphtha, kerosene and gas oil cuts, with least 90% purity and recovery of the components. The Fenske-Underwood-Gilliland method was used to estimate the number of stages and reflux ratio of the column, and the Kirkbride method was used to find an initial estimate for the feed stage. The TBP curves of the cuts were compared with similar cuts from literature and found to be similar. The Base Case underwent a sensitivity analysis in order to ascertain the effect of different design and process parameters on the separation quality and utility consumption. The parameters that were tested are cold condensate temperature, feed stage, condenser duty, feed temperature and stripping steam flow rate to the ADU. According to the sensitivity analysis results, for optimal separation between the syncrude and the other gases in the raw feed, the gases must be purged at a temperature of -70°C. Furthermore, the optimal configuration for the distillation of the given syncrude into naphtha, kerosene and gas oil fractions with at least 90% purity and recovery is as follows: The ADU has 40 equilibrium stages and a condenser duty of approximately -5.7 MW. The feed must be heated to 310°C and enter the column at stage 37. The stripping steam flow rate must be around 1.3 kg/s. Five alternative processes were modelled as well, with similar inputs to the column model, and the results of the distillate separation quality and utility consumption were documented as well. The alterations of the alternative cases include replacing the stripping steam with a reboiler in one of the strippers, adding a stripper from where an additional product was drawn, concentrating the pumparound duty on the condenser, using a vacuum distillation unit to fractionate the residue of the atmospheric distillation unit, and employing a heat integration network.The most important conclusions are listed. Firstly, the side strippers must use low pressure stripping steam instead of reboilers. Next, the minimum number of products must be drawn off in order to minimize utility consumption at a given separation quality. Furthermore, heat integration can save up to 50% in total utility consumption (heat and cooling water). It is recommended that further research, including a cost estimation, is conducted on refineries that produce on-specification final products.<br/
Erratum: Korkovelos, A., et al. The role of open access data in geospatial electrification planning and the achievement of SDG7. An OnSSET-based case study for Malawi. <i>Energies</i> 2019, 12(7), 1395
No full textThe authors wish to make a change in author names (adding new author—Dimitrios Mentis) to this paper
The Exemplary Life of Dimitrios Vikelas (1835-1908)
No full textThis paper describes the "satisfying curve" of Dimitrios Vikelas' life journey, starting from Syros in 1835, moving via Constantinople, Odessa, and Syros again, to London, Paris and finally Athens. It explores Vikelas' multiple aspects, as merchant, writer, traveller, lecturer and essayist, Olympic founder, educationalist, book collector and philanthropist, all of which were united in the public-spirited man of letters (logios). It sets Vikelas in the context of the Greek commercial diaspora, the world of the London expatriate Greek community, and the dynamic society of late nineteenth-century Athens, beginning in the 1870s to act as a magnet to Greek expatriates. The author stresses two qualities of Vikelas: his belief in the idea of a progressive Greek state marked by advances in education, culture, tourism and standards of public life; and the self-awareness and experience which inform his autobiographical writings, not only his memoir My Life but also his last such work, The War of 1897
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