Search

This paper examines the determinants of the variability in corporate effective tax rates before and during the financial crisis in Greece, a country that was, and still is, at the core of the European Union's agenda. Analyzing firm-level data for the period 2000–2014, we find strong evidence that specific firm characteristics including firm size, financial leverage, capital and inventory intensity influence the level of corporate effective tax rates. Our results also indicate that corporate effective tax rates increased in the period after the beginning of the financial crisis, while their association with some firm-specific characteristics was also affected. [ABSTRACT FROM AUTHOR]

This study aims at reconstructing Pleistocene slope erosion processes and transformation of relief in well-developed Pleistocene (Tyrrhenian) marine terraces along the western Peloponnese. The investigations are based on existing geological data, field observations, a selected seismic reflection profile, sedimentological analysis and radiometric dating. Aftershock rupture segment extends for 6 km in a WNW direction. Each fault movement in an earthquake results in a sudden increase in the size of the scarp, by an amount ranging from a few centimeters to several meters. Thrust faulting occurs on shallow dipping faults and does not commonly produce a true fault scarp, because the tip of the upper part, over the thrust block, tends to collapse, leaving a sinuous scarp that does not coincide with the fault plane. Strike-slip faulting may result in a scarp if there is a significant extensional or thrust component of motion, or if rock-types with different weathering characteristics and thickness are compared by faulting. Failing this, both active and inactive faults are often marked by a fault-line, a line of preferential erosion along the fault. The combined effects of fault motion, erosion, and sediment deposition affect the form of the scarp and the latter two will eventually eliminate it after movement on the fault ceases. If the rock erosion rates on both fault sides are known or can be assumed to be negligible, and the sediments deposited contain material that can be dated, then the magnitude of the scarp can be used to determine the age at which the scarp began to form and the long-term rate of movement on the fault. More information regarding the relative significance and rate of movement of these faults can be obtained by observing their effects on the drainage pattern in the area. In particular, morphotectonic data indicate that the observed rupture segment may reflect a fault-line scarp corresponding to an old fault scarp, which belongs to the isotopic stage 7 or prior, i.e. isotopic stage 11, during the evolution of NW Peloponnese basin. Moreover, morphotectonic data clearly shows that NW Peloponnese is characterized by a complex structural pattern and erosion process phenomena aided by human activity. This data is well-supported by seismic reflection profiles information. [ABSTRACT FROM AUTHOR]

This study deals with the analysis of the glacial processes that have affected the relief of Mt Chelmos in northern Peloponnesus, Greece during middle and Late Pleistocene. The goal was to compile a combined geomorphological-geological map of the study area which would enable the chronological stratification of the glacial landforms cropping up on Mt. Chelmos. Chronological stratification was further aided by optically stimulated luminescence (OSL) dating. The map served as the basis upon which the reconstruction and discussion on the phases of the Middle-Late Quaternary paleoclimatic history of Mt. Chelmos have been made. A sophisticated semiautomated method was first used to analyze the Digital Elevation Model (DEM), combined with Aster, Quickbird and ALOS imagery in order to identify glacial and periglacial, as well as karstic features. Then, these features along with other nonrecognizable features from the remote-sensing images were documented in the field. In this way, several glacial landforms were identified, such as moraines and cirques, indicating extended glaciation phases during the middle and Late Pleistocene. Additionally, a ground moraine located at an altitude of 1900-2050 m, within the Spanolakos glacial valley, was dated using the OSL-dating method. The resulting ages indicate a phase of glacier advance/stabilization during MIS-5b (89-86 ka), which is in consistence with pollenrecord evidence from Greece and the Mediterranean. [ABSTRACT FROM AUTHOR]

One of the major causes of landslide triggering of sandy slopes is heavy rainfall occurrences. The present study (a) clarifies the mechanism of rainfall-induced failures of sandy slopes and (b) based on this mechanism proposes a simplified expression predicting the instability. The proposed expression in some aspects has a form similar to others previously proposed, but the novelty of the present study is that, by analysis, it is specified (a) in which type of soil it can be applied exclusively, (b) which is the depth of the sliding surface and (c) which drainage condition corresponds to the strength parameter and how to measure this parameter. In order to achieve this, first a simplified expression is proposed assessing the stability, based on the assumptions that (i) the problem can be treated as one-dimensional under drained conditions and (ii) temporary water flow exists just above a relatively impermeable inclined layer. Furthermore, the paper gives typical values of model parameters and predictions of the proposed equation. Next, it discusses the drained assumption used to obtain the proposed equation and the manner in which to measure the soil friction angle, needed in the proposed equation. Partial validation of the proposed equations is also performed at six well-documented landslides at two sites: Jiuzhaigou Park, China and Sifnos island, Greece, where geotechnical investigations are performed in order to establish the soil properties. Finally, it proposes, based on the developed equation, (i) a methodology assessing the stability of sandy slopes under rainfall conditions and (ii) mitigation measures. [ABSTRACT FROM AUTHOR]

Background: Aging of population brings changes in needs and capacities. People live longer and chronic diseases appear to be a potential risk of major causes of disability and functional dependency. The aim of this study was to investigate the physical and mental health of the elderly residing in an urban area in Athens,Greece. Methods: In this population-based study using a convenience sampling, seniors aged ≥ 65 years old, under no medical treatment were selected from Korydalos area, Athens, Greece. A translated version of the General Health Questionnaire (GHQ-28) was used and associations with other parameters were performed. Higher GHQ-28 scores indicate higher levels of distress. Results: A total of 100 seniors participated in the study, 64% females, mean age 71.4 years. 51% were married, 40% lived alone and 82% had primary or secondary education. 59% received a pension from the state, out of them 42% between 601-1000 euros and 33% between 301-600 euros, monthly. The mean GHQ-28 score, for a potential mental disorder in the somatization, anxiety, social dysfunction, and depression factors, was 24.3, 29.1, 42.9 and 10.2, respectively. Females presented higher scores in total GHQ score (p = 0.018), in somatization (p = 0.019) and in social dysfunction (p = 0.001). Higher age was associated with higher total GHQ score (p = 0.001), higher anxiety (p = 0,006) and higher dysfunction (p = 0.006). Seniors with lower educational level had higher total GHQ score (p = 0.032) and higher social dysfunction (p < 0.001). Low financial status was associated with higher social dysfunction (p = 0.005). Conclusions: The study revealed an overall moderate emotional distress in elderly. However, a high risk in social dysfunction is obvious, whereas risk of depression is very low. Age, educational level and financial status are associated with various dimensions of distress and psychiatric disorders. GHQ-28 is a suitable screening tool and can be used to prevent chronic disease and mental disorder. Key messages: • GHQ-28 can be used as a screening tool in elderly in urban communities to assess psychological well-being and detect possible psychiatric morbidity and to improve their overall health. [ABSTRACT FROM AUTHOR]

Abstract: The paper focuses on the study of the dynamic response of a wind turbine installed close to seismic fault in an earthquake prone region of Greece. The investigation of the seismic behavior of the turbine is performed with response spectrum analysis using the elastic acceleration spectrum provided by the Greek National Aseismic Code for the project area, increased by 25% due to proximity to seismic fault, as recommended by the Code. Also, dynamic analysis is performed using the spectrum obtained from the assessment of seismic hazard at the site of the project (Local), for two typical cases of earthquakes of magnitudes M s=5.8 and M s=7.3 with epicentral distances of 1km and 11km from the test position, respectively. Finally, a time-history analysis is carried out using an artificial accelerogram obtained from the local spectrum envelope, for the site of the project, considering 1% damping ratio. The direct comparison of the response spectrum analysis results with the corresponding ones obtained from the dynamic and time-history analyses indicates that the implementation of the elastic acceleration spectrum is insufficient, although increased, and therefore it could be deduced that the current recommendation of the Greek National Aseismic Code to consider an increment of 25% on the elastic acceleration spectrum in regions close to seismic faults, requires review and further improvement. [Copyright &y& Elsevier]

Environmental history often reveals the contribution of humans in the modification of natural environment, always in relation with the climatic factors. Archaeological settlements may be preserved through desiccation, however, they are commonly found in floodplain sediments. Archaeological evidences may provide with useful information about the processes and extent of environmental changes, but they may also be used as tools for the analysis of floodplain sedimentation, relative chronology of sedimentation events and for the geomorphological evaluation of the particular archaeological site. The characteristics of archaeological indicators and the deposits in which they occur, may indicate important aspects of their source, transportation way and age. Evidence of river migration may be found in alluvial plains, through careful observations. The study area is located in Kalavrita region in northern Peloponnese. The archaeological excavations carried out revealed the fortification wall of the ancient city of "Kleitor"which is dated between the 3rd and 2nd century BC (Hellenistic Period). It may also provide clues for land surface development, reworking of sedimentary deposits, paleoenvironmental and climatic conditions. Sediments indicating considerable climatic changes are alluvial deposits of considerable thickness, covering areas with human impact. All the aforementioned become a tool for dating the course changes of the rivers and consequently a geomorphological instability. The relationship between geomorphology and history is recognizable also in the settlement distribution. This close relationship between environment and man provides a tool to understanding the landscape evolution from a geomorphological and historical point of view. [ABSTRACT FROM AUTHOR]

Morphometric data for the five vole species of the genus Microtus living in Greece are old, sparse, poor and insufficiently analysed. This work aims to give the first comprehensive morphometric analysis of body and skull inter- and intraspecific variation for M. (M.) guentheri, M. (M.) rossiaemeridionalis, M. (Terricola) subterraneus, M. (T.) felteni and M. (T.) thomasi, applying multivariate statistics to 28 linear morphometric variables. It was based on ample material (202 adult individuals) using samples from localities that adequately cover the entire distributional range of each species in Greece. The five species and the two subgenera ( Microtus and Terricola) were morphometrically clearly distinguished and discriminating variables were revealed. However, morphometrics did not provide robust criteria to infer phylogenetic relations among species. Furthermore, three species, M. (M.) guentheri, M. (M.) rossiaemeridionalis and M. (T.) thomasi, exhibited considerable intraspecific size or shape variation, which was mostly random and not associated with geographical proximity. Comparisons with data in the literature, mainly concerning populations of these species from adjacent areas, indicate that the Greek M. (M.) guentheri, M. (M.) rossiaemeridionalis and M. (T.) thomasi tend to be smaller than their conspecifics, while M. (T.) subterraneus and M. (T.) felteni are about equal in size to their Balkan relatives. [ABSTRACT FROM AUTHOR]

Multidisciplinary researches allowed us to describe the morphological and palaeoenvironmental dynamics of the Kotychi Lagoon in the Holocene. This transition environment is separated from the open sea by a low barrier and has limited communication with it through a stable, short, and narrow inlet. The lagoon is limited by a modern alluvial plain made by several streams. Along the landward lagoon margins, small-scale deltas of these streams prograded into the lagoon. Intertidal and supratidal mud flats developed among the deltas, covered with vegetation (e.g., Salicornia sp.). Northwards, the lagoon is limited by a large marshy area. To the North of this area, a group of well-developed beach ridges parallel to the current shoreline is present. These are affected by erosion, and migrating sandy dunes have buried some of the beach ridges. South of the lagoon, the ancient Peneus River delta is located. The bottom depth in the Kotychi Lagoon decreases gradually from the landward of the barrier to the inner lagoon margins. Although the maximum depth is about 2.5 m in front of the inlet, the average depth is only 0.5 m. The main lithological type of the lagoon sediments is sandy mud, with some exceptions in the eastern edge of the lagoon and some locations around it where silty-clayey sediment was deposited. According to geomorphological surveys and palaeoecological interpretation of two cores analysis as well as with previous researches and datings, the recent morphogenetic evolution of this lagoon is mainly due to three Holocene phases: 1) 7-4 ka BP: sediment filling, development of a primitive open lagoon; 2) 4–1.5 ka BP: development of sandy ridges, partially closed lagoon; 3) 1.5 ka BP - present-day: closed lagoon, with one mouth. Fractal analysis confirms that currently the basin shape is evolving from a lagoon towards a coastal pond, due to contraction and filling up by sediments. [ABSTRACT FROM AUTHOR]

Delay is the enemy for patients with acute myocardial infarction. It would be helpful for the hospital cardiologist to interpret the patient's electrocardiogram (ECG) before the arrival of the ambulance. The aim of our study was to determine whether ECG transmission from an ambulance is feasible and to assess the time savings. An ambulance was equipped with an ECG recorder, which was connected to a notebook computer and coupled to a cellular telephone for transmission to a hospital-based station. Paramedics needed 2 min (SD 0.5) to record the ECG on the move and 34 s (SD 14) to transmit it. The ambulance arrived 15.5 min (SD 6.5) after reception. The time between arrival and ECG diagnosis, for a control group patient, was approximately 9.5 min (SD 3.5). Therefore, pre-hospital ECG diagnosis took place 25 min (SD 7.5) before in-hospital diagnosis. We conclude that ECG transmission from a moving ambulance is feasible, reduces in-hospital delays and allows faster triage in critical cardiac cases. [ABSTRACT FROM AUTHOR]

Abstract: As part of an extensive cytological study in natural populations of Thomas’ pine vole Microtus thomasi, two cases of XXY aneuploidy (2n=45, FN=47) from different localities of NW Peloponnesus, Greece were recently recorded. These constitute the first report of sex chromosome aneuploidy for this species, in a sample of 366 individuals from 89 localities of Greece. Both individuals appeared with a male phenotype and normal morphology; however, measurements and histological examination in the testes of one of the two individuals imply a severely impaired fertility. The above findings translate to a relatively high rate of sex chromosome aneuploidy (0.55%) (upper 95% CI 1.96%) for the natural populations of Microtus thomasi and possible reasons for this are discussed. [Copyright &y& Elsevier]

To identify the optimal strategy for the triage of women who test high-risk (hr) HPV positive on self-collected cervicovaginal samples. This is a diagnostic accuracy sub-analysis of the GRECOSELF study, which reported on HPV-DNA testing with self-sampling in Greece. More than 13,000 women, 25–60 years old, who resided in rural areas of Greece, provided a self-collected cervicovaginal sample. Samples were tested for HPV-DNA and HPV16/18 genotyping with the cobas® HPV test (Roche® Molecular Systems, Pleasanton, CA, USA). HrHPV positive women were referred for colposcopy. Prior to colposcopy a physician-collected sample was obtained for cytology. After colposcopy/biopsy, women were classified as having cervical disease or not, and treated accordingly. Out of 1070 hrHPV positive women, 773 were subjected to colposcopy. Seventeen triage strategies, combining HPV16/18 genotyping and cytology, were investigated. The strategy referring to colposcopy women positive for HPV16 regardless of the cytology report, and women positive for other hrHPVs, in case of a subsequent atypical squamous cells of undetermined significance or worse (ASCUS+) cytology report, presented optimal trade-off; sensitivity 96.36% [(95%CI: (91.41–100.0)], positive predictive value (PPV) 27.46% [95%CI: (21.16–33.76)], and number of colposcopies required to detect one case of Cervical Intraepithelial Neoplasia grade-2 or worse (CIN2+) 3.64. The optimal strategy for the triage to colposcopy of hrHPV positive women, detected with the cobas® HPV test on self-collected cervicovaginal samples, is referring all HPV16 positive women directly to colposcopy, and women positive for HPV18 or other hrHPVs only after an ASCUS or worse cytology report. • Self-sampling with HPV testing is an emerging mode of cervical cancer screening. • Triage of HPV positive women is necessary to avoid over-referral. • Optimal triage is done with HPV genotyping on self-collected samples and cytology. • HPV Genotyping for the triage of HPV positive women should include HPV16. • HPV16/18 genotyping is feasible on self-collected samples used for primary screening. [ABSTRACT FROM AUTHOR]