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Search Results: 1 - 10 of 1537 matches for " Dimitrios DAPONTAS "
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Dimitrios DAPONTAS
Scientific Annals of the Alexandru Ioan Cuza University of Iasi : Economic Sciences Series , 2011,
Abstract: This paper is comparing the currency crises in Turkey for 20 years (from 1990 till today) and to distinguish their causes divided in three periods (1990-1995), (1995-2002) and (2002-2009). My goal is to compare these incidents to find similarities and differences among them for the very first time for the country’s analysis. The forward spread is selected as a dependent variable along with a set of independent macroeconomic and social variables (balance of payments, crisis elsewhere, real effective exchange rate, foreign exchange reserves, gold price, lending rate, money, external debt and consumer price level) examining these variables for a twenty year period (January 1990- December 2009) the largest set availiable in refered literature I examined their relation to the forward spread, following the feasible least squares methodology. This innovative approach is used for the first time in the field and it has the major advantages of least squares methodology along with panel data analysis flexibility. The results show that the crisis of 1994 had to do with fundamentals (first generation theoretical framework), the 2001 crisis with economic condition and policy (modified first generation) and the 2008 crisis with contagion and the global credit crunch (third generation).None of these crises were linked as previous works mentioned and the 2008 turbulence can be rated as a crisis according to my criteria.
Has accession to the EU affected business cycles?
Theoretical and Applied Economics , 2013,
Abstract: This paper undertakes to explain the relationship between EU accession and the length of business cycles, focusing specifically on whether participation in a multinational organization has, or has not, altered the length of the cycle. Employing a sample of nine EU countries (Austria, Denmark, Finland, Greece, Ireland, Portugal, Spain, Sweden and the UK) we focused initially on annual data for per capita growth in GDP over a period of 59 years (1950-2008). For each country the sample was divided into two parts, one covering the period preceding accession to the EU and one is covering the accession year and succeeding years. Then, eliminating the background noise with the use of a periodogram, we proceeded to examine their spectral density plots. The results indicated that in the first years following accession, the countries tended to experience shorter cycles than they had previously. In the second phase the cycles were of the same duration as previous cycles. Finally, after a period of some years, the length of the cycles increased, as suggested by the J-shaped curve. This J-shaped growth curve applies for the countries that have joined the EU, strongly suggesting a causal relationship between accession to the EU and these specific characterristics of the curve. We cross-checked with a set of four non-EU member countries (Iceland, Norway, Switzerland and Turkey) and found no change in the length of the business cycle in these countries.
In-Motes EYE: A Real Time Application for Automobiles in Wireless Sensor Networks  [PDF]
Dimitrios Georgoulas, Keith Blow
Wireless Sensor Network (WSN) , 2011, DOI: 10.4236/wsn.2011.35018
Abstract: Wireless sensor networks have been identified as one of the key technologies for the 21st century. In order to overcome their limitations such as fault tolerance and conservation of energy, we propose a middleware solution, In-Motes. In-Motes stands as a fault tolerant platform for deploying and monitoring applications in real time offers a number of possibilities for the end user giving him in parallel the freedom to experiment with various parameters, in an effort the deployed applications to run in an energy efficient manner inside the network. The proposed scheme is evaluated through the In-Motes EYE application, aiming to test its merits under real time conditions. In-Motes EYE application which is an agent based real time In-Motes application developed for sensing acceleration variations in an environment. The application was tested in a prototype area, road alike, for a period of four months.
The Relationship between Stock Returns and Volatility in the Seventeen Largest International Stock Markets: A Semi-Parametric Approach  [PDF]
Dimitrios Dimitriou, Theodore Simos
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.21001
Abstract: We empirically investigate the relationship between expected stock returns and volatility in the twelve EMU countries as well as five major out of EMU international stock markets. The sample period starts from De-cember 1992 until December 2007 i.e. up to the recent financial crisis. Empirical results in the literature are mixed with regard to the sign and significance of the mean – variance tradeoff. Based on parametric GARCH in mean models we find a weak relationship between expected returns and volatility for most of the markets. However, using a flexible semi-parametric specification for the conditional variance, we unravel significant evidence of a negative relationship in almost all markets. Furthermore, we investigate a related issue, the asymmetric reaction of volatility to positive and negative shocks in stock returns confirming a negative asymmetry in almost all markets.
Wireless Sensor Network Management and Functionality: An Overview  [PDF]
Dimitrios GEORGOULAS, Keith BLOW
Wireless Sensor Network (WSN) , 2009, DOI: 10.4236/wsn.2009.14032
Abstract: Sensor networks are dense wireless networks of small, low-cost sensors, which collect and disseminate en-vironmental data. Wireless sensor networks facilitate monitoring and controlling of physical environments from remote locations with better accuracy. They have applications in a variety of fields such as environ-mental monitoring; military purposes and gathering sensing information in inhospitable locations. Sensor nodes have various energy and computational constraints because of their inexpensive nature and adhoc method of deployment. Considerable research has been focused at overcoming these deficiencies through more energy efficient routing, localization algorithms and system design. Our survey presents the funda-mentals of wireless sensor network, thus providing the necessary background required for understanding the organization, functionality and limitations of those networks. The middleware solution is also investigated through a critical presentation and analysis of some of the most well established approaches.
Anger and hostility in the aftermath of a wildfire disaster in Greece  [PDF]
Dimitrios Adamis, Vicky Papanikolaou
Open Journal of Psychiatry (OJPsych) , 2011, DOI: 10.4236/ojpsych.2011.12010
Abstract: Previous studies reported that anger and hostility are often presented in the victims of a disaster. This study investigates the symptoms of anger and hostility after a wildfire disaster in a rural area of Greece. Cross sectional case control study of adult population (18-65 years old). Face to face interview. Data collected were demographic, Symptom Checklist 90-Revised for assessment of hostility, type and number of losses, trust in institutions personal and social attitudes. It was found that more of the victims of the wildfires reported symptoms of hostility compared to controls but this difference was disappeared when we adjust for other variables. Risk factors for development of hostility among the victims were mistrust in military forces and media, high levels of anxiety and distress, younger age and having higher education. It was concluded that anger and hostility after a disaster perhaps are not only related to disaster but other factors concerning demographic and personal characteristics may play an important role.
The Development of the Greek Personality Assessment Inventory  [PDF]
Dimitrios Georgiou Lyrakos
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.28122
Abstract: Presented in the current report are the reliability analysis of the Greek Personality Assessment Inventory (PAI), the differences between the means and the standard deviation (SD) of the Greek and the US sample and the creation of the maximum non-clinical T Scores for each of the scale and subscale produced by the Greek standardization sample. The PAI is considered, in the US and in many European countries, one of the most reliable multidimensional psychometric inventories. The PAI consists of 344 questions that are separated in non-over- lapping scales of clinical, treatment focus, personality and validity context. The present, mixed design study had 1870 participants, males and females between the ages of 20 and 55.The participants were 1120 non-clinical (standardization sample), 450 psychiatric inpatients and 300 psychiatric outpatients, who were gathered from 4 major regions of Greece.
The Impact of Stress, Social Support, Self-Efficacy and Coping on University Students, a Multicultural European Study  [PDF]
Dimitrios G. Lyrakos
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.32022
Abstract: The present study is a follow up study of 562 University students during a 12 month period, at Universities from the UK, France, Germany, Austria, Spain, Italy, and Greece. The purpose of the study is to examine the impact of stress, social support and self-esteem on university students. To our knowledge, it is one of the very few, if not the only study, that examines those particular variables in a multicultural sample. The students completed at the beginning of the 12 month period a self reported scale about stress (the Daily Hassles questionnaire), self-esteem, and social support. During the second time the participants have also completed sections about University Satisfaction, and Coping Styles of Stress. The statistical analysis afterwards has shown that the levels of stress have been significantly reduced after the passing of the 12 month period (p < .001), as it was hypothesised. On the other hand Social Support has been significantly reduced during the passing year (p = .049), which confirmed the Null-Hypothesis. Furthermore the research has shown that the levels of stress are negatively correlated with the positive ways of coping, the levels of social support, self-esteem and University Satisfaction. On the other hand the levels of stress are positive correlated with the negative ways of coping, all above correlation have been proven to be significant (p < .005). Finally the country of studies has shown some differences in the levels of stress and in the rest of the variables of interest, particularly between the UK students and the rest of the other countries.
Creativity in Greek Music Curricula and Pedagogy: An Investigation of Greek Music Teachers’ Perceptions  [PDF]
Dimitrios Zbainos, Ariadni Anastasopoulou
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.31009
Abstract: Creativity’s enhancement through education has been widely discussed and promoted in Greece, especially in the past few decades. In the music domain, teaching philosophy and practice seem to focus on ways that can encourage children to learn and apply their knowledge through creative music activities. This paper reports on the outcomes of a study undertaken with 112 general music teachers of different ages and scientific backgrounds, who teach in 235 primary and secondary schools in Greece. Being the first time that such research is being conducted in Greece, the main aim of the study was to reveal how Greek music teachers think, feel about, and influence pupils’ creativity and the teaching conditions that may enhance or inhibit it. It is believed that such a study may contribute to the development of creativity enhancement projects through music teaching. The findings suggest that creativity is associated by Greek music teachers with a natural gift that cannot be addressed in all students, and can only be partly taught in music classroom. They also indicate that teachers do not have an explicit understanding of music creativity as well as creativity assessment, since most of them tend to assess students’ creative performance on the basis on non musical criteria (i.e. participation, eagerness, etc.). Results also show that creative musical activities are more often applied in primary education, while in secondary education they are successively replaced by music theory and history. Finally, teachers’ negative views about the music curriculum, text- books and number of teaching hours are identified. Such findings lead to suggestions for numerous changes in music teachers’ education, establishing training in teaching for creativity as a fundamental priority.
Urban Growth Modelling Using Determinism and Stochasticity in a Touristic Village in Western Greece  [PDF]
Dimitrios P. Triantakonstantis
Open Journal of Civil Engineering (OJCE) , 2012, DOI: 10.4236/ojce.2012.21007
Abstract: Urban development has acquired an important magnitude in touristic places in Greece. Many villages, especially in seaside areas have adapted to touristic requirements by the necessary infrastructures and activities. Pogonia, located in Vonitsa Etoloakarnanias, is a village which has welcomed the opportunity of touristic development. As a result, the house settlements increased 57.5% during the last 8 years. Urban growth modelling using Artificial Neural Networks (ANNs) was applied in order to simulate the urban development in Pogonia village using two methods: determinism and stochasticity. The variables used for deterministic simulation were: distances to roads, urban areas and coastline, slope and elevation. It was found that urban development can be better described using the network of distances between all urban settlements (stochastic approach) rather than using determinism. This can be explained by the importance of the neighbourhood relationships and the interaction between urban settlements, occurred within the interconnected network of the self-organized urban system.
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