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Investigating the Tradeoffs between Power Consumption and Quality of Service in a Backbone Network
Georgia Sakellari,Christina Morfopoulou,Erol Gelenbe
Future Internet , 2013, DOI: 10.3390/fi5020268
Abstract: Energy saving in networks has traditionally focussed on reducing battery consumption through smart wireless network design. Recently, researchers have turned their attention to the energy cost and carbon emissions of the backbone network that both fixed and mobile communications depend on, proposing primarily mechanisms that turn equipments OFF or put them into deep sleep. This is an effective way of saving energy, provided that the nodes can return to working condition quickly, but it introduces increased delays and packet losses that directly affect the quality of communication experienced by the users. Here we investigate the associated tradeoffs between power consumption and quality of service in backbone networks that employ deep sleep energy savings. We examine these tradeoffs by conducting experiments on a real PC-based network topology, where nodes are put into deep sleep at random times and intervals, resulting in a continuously changing network with reduced total power consumption. The average power consumption, the packet loss and the average delay of this network are examined with respect to the average value of the ON rate and the ON/OFF cycle of the nodes.
Assessment of health needs; the health visiting contribution to public health
Evanthia Sakellari
International Journal of Caring Sciences , 2012,
Abstract: Health Visiting is targeting to health inequalities and quality of life in communities. Thus, HealthVisiting profession is linked with public health and health promotion interventions in the community.Health needs assessment is a methodology that reviews population health issues in order to produce aset of recommendations for action to improve health outcomes. The methodology of health needsassessment which is described in this paper is determined as a useful tool for the everyday practice ofHealth Visitors. The use of structured tools is also discussed which have lead to suggestions for futureresearch and Health Visitors’ education.
Empowering mentally ill people: A new health promotion challenge?
Sakellari Evanthia
International Journal of Caring Sciences , 2008,
Abstract: During the past decades, psychiatric services have undegone a transition to community-based caresystems. People who are mentally ill need to regain power over their own lives, since they have been disempowered,due to, in some cases, many years of institutionalisation. Psychosocial rehabilitation services should aim towardsempowerment within the framework of the mental health promotion of each particular individual. This paper aimsto offer a review of the literature concerned with the empowerment of mentally ill people and to present the benefitsthat empowered people gain. Research has demonstrated that empowerment among mentally ill people offerslife satisfaction. Mentally ill people are in need of a rehabilitation model that encourages their empowerment, byemphasising the goals defined by them. Empowerment may refer to both outcome and process, that is, not only tothe outcome of the decisions an individual makes, but also to the essential feeling of being an active participant inthe decision-making process. Patient empowerment is a matter of self-determination, hence, it occurs when a patientfreely chooses his or her own path to recovery and well-being. It has been concluded that mentally ill people livingwithin the community should not be treated as mere passive objects of medical interventions. Thus, empowermentshould be a well-established part of mental health care and the base of psychosocial rehabilitation services. Nurses, inassociation with other health care professionals, should develop and implement adequate interventional programmes,which facilitate decision-making skills and promote self-esteem. Furthermore, empowerment sets new challenges forthe nurses’ education and it should, therefore, be the subject of studies in order to test the impact of empowermentinterventions and to develop future practice within the scope of the psychosocial rehabilitation of mentally ill people.
Constantina Skanavis,Maria Sakellari
Tourismos : an International Multidisciplinary Journal of Tourism , 2011,
Abstract: Tourism researchers have begun to study the phenomenon of domestic tourism, especially in developing countries. The growth of research interest in domestic tourism in developing countries underpins a stream of research in developed countries. The analysis reveals the appeal of these distinctive forms of tourism, international and domestic with regards to leisure, recreation and tourism patterns, but also highlights potential limitations including the dilemma of how to deal with the question of environmental quality that is affected by prevailing international and domestic tourism activities. Impacts of climate change on domestic and international tourism and environmental impacts caused by domestic and international tourism are highlighted. This paper suggests that Environmental Education is the key to this critical area concerning domestic tourism, international globalized tourism and environmental impacts.
Health Promotion and School Health: the Health Visiting Role in Greece
Venetia Notara,Evanthia Sakellari
International Journal of Caring Sciences , 2013,
Abstract: Background: Health promotion is the process of enabling people to increase control over, and to improve their health. Schools intend to help pupils acquire the knowledge and develop the skills theyneed to participate fully in adult life. School is regarded as constituting a very important arena for health education among children and young people and furthermore, it is seen as an important context for health promotion, mainly because it reaches a large proportion of the population for many years. A large body of evidence strongly support the fact that education and health are two concepts purely interdependent in many ways and children cannot make the most of educational opportunities if their health is impaired. One of the core elements of Health Visiting profession should be safeguarding children by conducting school visits and implement screening tests, health education programmes and school health programmes in general. Some of the best opportunities for positively influencing the health of young people and preventing the initiation of the health risk behaviors are found in the school setting.Conclusions: A whole school approach and community development work can be particularly effective in building the health capacity of communities.
The Consequences of Tongue Piercing on Oral and Periodontal Tissues
Ioannis Plastargias,Dimitra Sakellari
ISRN Dentistry , 2014, DOI: 10.1155/2014/876510
Abstract: This paper is discussing the potential consequences that may arise by the implementation of piercing in the oral cavity and is also categorizing the consequences according to their extent and severity. Furthermore, this paper is reviewing some possible oral hygiene methods that can prove to be auxiliary in decreasing the potential complications arising from oral piercing. This literature review is based on articles published from 1985 to 2012. 1. Introduction Body piercing involves the puncturing of specific places of the body in which metallic adornments are installed. Piercing in the oral cavity has gained a rapid interest among the youth in the western world [1]. This interest may be attributed to several contributing factors. According to Kustner et al., the principal reason is the zest of the youth for being in style and in fashion. Other factors may include religion, traditional issues, rituals, or the feeling of being a member of a social group or even the feeling of superiority above the other members of the social “caste” [2]. As stated by Stirn et al., self-expression, expression of independence of spirit, amelioration of the body and of sensuality [3–5], and daring are contributing factors as well [6]. In their study it is also mentioned that oral piercing has been speculated to have healing results on depression. As a result it is postulated that the traumatic psychological events are correlative to piercing [3]. It has also been presented in studies that the practice of oral piercing is perceived as an aloof and bizarre behavioral pattern by society. This is a reason why the majority of patients who present to the dental office and use to wear piercings often take them off before the clinical session [7]. As a result, edema of oral soft tissues may be attributed to preexisting oral piercing that cannot be seen by the dentist though [8]. The overall purpose of this paper is to review the potential complications caused by oral piercings as they are analyzed in the literature. This paper also suggests some ways of improving the oral hygiene of the people who wear piercings and it suggests some methods of ameliorating the negative consequences of piercings. 2. General Literature Data on Oral Piercings There are some popular oral piercing spots: it is a general rule that the most common form of piercing is the barbell type piercing and the mostly pierced oral site is the tongue [9]. It has been reported that the tongue is often pierced in the midline and more specifically in the median lingual sulcus, albeit some piercings are performed on the
Children Friendship: The Role of Hope in Attributions, Emotions and Expectations  [PDF]
Georgia Stephanou
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.28133
Abstract: This research aimed to examine a) children’s attributions and emotions for their subjectively perceived friendships with their best friends as positive or negative, b) the role of children’s hope (pathways thinking, agency thinking) in the generation of their perception of their friendships as positive or negative, in the formulation of the subsequent attributions and emotions, and in the impact of attributions on emotions, and c) the effects of hope in the interactive impact of attributions and emotions on friendship expectations. The participants were 322 children, both gender, 5th and 6th grades, representing various parental socioeconomic levels. The results showed that the perceived satisfactory friendships were mainly attributed to internal, and self-friend interactive internal and controllable factors, while the estimated as non satisfactory friendships were predominately attributed to stable, friend’s controllable and internal, and self-friend interactive internal factors. The children experienced intense positive and negative emotions for their perceived satisfactory and non satisfactory friendships, respectively. Hope (mostly, agency thinking) positively influenced the generation of the perceived quality of the friendship, the subsequent attributions (particularly, stability) and emotions, and the impact of attributions on emotions, mainly in the negative friendships group. Also, in the positive friendship group, high-pathway thinking children had higher expectations of positive friendship, whereas, in the non satisfactory friendship group, low-agency thinking children had low expectations of positive friendship. Finally, hope proved formulator of the interactive effect of attributions (mainly, locus of causality) and emotions on friendship expectations. The findings from this study suggest the significant role of good friendship in children’s life, and indicate the importance of examining children friendship along the role of hope in evaluating, attributing causes, experiencing emotions and forming expectations.
Romantic Relationships in Emerging Adulthood: Perception-Partner Ideal Discrepancies, Attributions, and Expectations  [PDF]
Georgia Stephanou
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.32023
Abstract: This study aimed to examine 1) emerging adults’ attributions for their subjectively perceived current ro- mantic relationship as good or bad, 2) the role of their perception-partner ideal discrepancies in estimate- ing their current romantic relationship as good or bad, and in the formation of attributions, and 3) the ef- fects of all the three concepts on the generation of the expectations for the quality of the romantic rela- tionship in the future. Undergraduate and postgraduate university students, from various faculties, ages of 18 to 25, both genders, participated in this study. The participants filled in, first, the scale of the romantic partner ideals, and, after one week, the scales of perceived of the quality of the current romantic relation- ship, attributions and expectations. The results regarding attributions revealed that 1) the perceived good romantic relationships were mainly attributed to internal and self-partner internal and controllable factors (love, passion, effective communication, honesty-loyalty, understanding each-other), whereas the per- ceived bad romantic relationships were mainly attributed to personal uncontrollable, external, unstable and partner’s internal factors (untrustworthiness, lack of passion, non honesty-loyalty, lack of love, and ineffective communication), and 2) locus of causality, followed by personal controllability and stability, was the most powerful attributional dimension in discriminating the two groups of the emerging adults. The findings regarding the perception-partner ideal discrepancy showed that 1) the students who had smaller perception-partner ideal discrepancy, compared to students who had larger perception-partner ideal discrepancy, estimated their current romantic relationships more favourable but only trustworthiness accounted for unique variance in it and 2) perception-partner ideal discrepancy in trustworthiness, fol- lowed by warmth/intimacy, and attractiveness/vitality, was the most powerful factor in discriminating the two groups of the participants. The results with respect to effects of partner ideal discrepancy on attributions indicated that 1) the students’ perception-partner ideal discrepancies proved to be a significant and positive factor in the formulation of the attributional dimensions (expect for external controllability), mainly both stability and locus of causality, for the perceived current quality of their romantic relationship and 2) only trustworthiness and warmth/intimacy had unique effects on locus of causality, and only trustworthiness uniquely contributed into
Phonological and Spelling Mistakes among Dyslexic and Non-Dyslexic Children Learning Two Different Languages: Greek vs English  [PDF]
Georgia Andreou, Julie Baseki
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.38089
Abstract: The aim of our study was to examine the phonological and spelling errors made by dyslexic and non-dyslexic children in two different languages, one (Greek, L1) much more transparent than the other (English, L2). For these purposes, our subjects (poor spellers officially diagnosed as dyslexics) composed two picture elicited narratives, one in Greek and one in English with the aid of Script Log, an online recording tool for experimental research on the process of writing. Our results showed that dyslexics generally made statistically significant (p < 0.05) more mistakes in both languages in comparison to non-dyslexics and statistically significant more phonological mistakes in English than in Greek. In addition, dyslexics made a great number of spelling mistakes in both languages, though of different nature depending on the language in which they occurred. Thus, the dyslexics in our study presented different error profiles in English and in Greek and implications are made that instruction methods should be language specific.
The Effect of IFRS Adoption on Investment Management: A Review of the Literature  [PDF]
Konstantinos Kapellas, Georgia Siougle
Technology and Investment (TI) , 2018, DOI: 10.4236/ti.2018.91001
Abstract: Recent literature contains a number of studies that provide evidence that improvements in the performance related to business investments are associated with the main positive results of the implementation of international financial reporting standards (hear after IFRS). This study is an effort trying to summarize empirical evidences in current literature about the effect of the IFRS adoption on investment management. We summarize literature on the effect of IFRS a) in a European setting b) in a worldwide setting. We especially refer to the effect of European Crisis on Investment Management. We summarize evidence on the impact of IFRS adoption worldwide on investments assets, foreign direct investments (FDIs), cross boarder investments (Merger and Acquisition activities) and foreign mutual fund ownership. We finally present some evidence on the impact of IFRS adoption on US home bias and try to document the impact of IFRS adoption on international listing and IPOS in global markets.
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