5 results on '"Koutras, V."'
Search Results
2. Students’ psychosocial empowerment with the ‘steps for life’ personal and social skills greek elementary programme
- Author
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Kourmousi, N. Markogiannakis, G. Tzavara, C. Kounenou, K. Mandrikas, A. Christopoulou, E. Koutras, V.
- Subjects
education - Abstract
Significant research has been conducted on skills’ enhancement school programs, since their importance has been well established. The presented study evaluates “Steps for life”, a Greek, universal, annual, teacher-taught programme, designed to improve personal and social skills in young elementary students by the use of questions, diffusion in formal and hidden curriculum, and parental involvement. The experimental study was conducted in Greece during 2013-2014. The sample consisted of 2439 students, with 1516 forming the experimental group and 923 the control group. The study questionnaire included demographics, Personal and Social Skills Scale-Elementary, and the BASE scale. It investigated students’ self-esteem, concentration of attention, participation/cooperation, emotions’ identification and expression, emotions’ management, ability to control verbal and physical aggressiveness, ability to control victimization, empathy, friendship skills, problem-solving, ability to take responsibility, and use of spoken and written language. The experimental group exhibited significant improvement in all investigated skills post-intervention, while the control group did not improve concentration of attention, emotions’ management, and their ability to control verbal and physical aggressiveness and victimization. The analysis also revealed that intervention students had significantly higher improvement than the controls in all dimensions. Appropriately designed mental health promotion programs can improve several children’s social-emotional skills and abilities. © IEJEE.
- Published
- 2018
3. The Toronto Empathy Questionnaire: Reliability and validity in a Nationwide sample of Greek teachers
- Author
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Kourmousi, N. Amanaki, E. Tzavara, C. Merakou, K. Barbouni, A. Koutras, V.
- Subjects
education - Abstract
The present study examined the Toronto Empathy Questionnaire's (TEQ) validity and reliability in a sample of 3955 Greek teachers. In order to test the internal consistency reliability, the Cronbach's alpha coefficient was used and was found satisfactory at 0.72. The sample was randomly split and an exploratory factor analysis (EFA) was conducted in the even subsample, justifying the one-factor solution, with the only discrepancy of the low loading of an item. In the odd subsample a confirmatory factor analysis (CFA) was performed to confirm the one-factor model identified by the EFA. The chi square test (χ2) of the model was significant (p < 0.05), while the root mean square error of approximation (RMSEA), the comparative fit index (CFI) and the goodness of fit index (GFI) values were 0.078, 0.969 and 0.960, respectively, further supporting the model's fit. Student's t-tests and analysis of variance (ANOVA) showed that women, teachers with children of their own, those working full-time in public schools, those with students who needed special education, and those who had received mental health promotion training, scored higher. Additionally, multiple linear regression analysis revealed that sex, working status, having students who needed special education, and having attended mental health training courses were independently associated with TEQ score. The analyses confirmed that the Greek version of TEQ could be used for researches in Greek educators as a valid and reliable measure of teachers' empathy. © 2017 by the authors.
- Published
- 2017
4. Ascorbic acid (vitamin C) effects on withdrawal syndrome of heroin abusers
- Author
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Evangelou, A., Kalfakakou, V., Georgakas, P., Koutras, V., Vezyraki, P., Iliopoulou, L., and Vadalouka, A.
- Subjects
Adult ,Male ,Heroin/*adverse effects ,Treatment Outcome ,Substance Withdrawal Syndrome/*drug therapy ,Outpatients ,Ascorbic Acid/*therapeutic use ,Humans ,Narcotics/*adverse effects ,Single-Blind Method ,Analgesics, Opioid/*adverse effects ,Heroin Dependence/*drug therapy - Abstract
BACKGROUND: Ascorbic acid (vitamin C), administered orally in high doses has been observed to relieve pain and reduce opioid use in cancer patients. In vitro studies have also shown that antioxidants, such as vitamin C, may, at high concentrations, inhibit the endogenous opioid degrading metalloenzyme and increase endorphin levels. In the present study the effects of oral administration of high doses of vitamin C on withdrawal syndrome of heroin abusers were investigated. MATERIALS AND PATIENTS: Ascorbic acid at doses of 300 mg/kg b.w/day, supplemented with vitamin E (5 mg/kg b.w/day), was orally administered in two groups of heroin addict subjects consisting of in-patients (Group A, 30 males) and one of out-patients(Group B, 10 males), for a minimum of 4 weeks. The group A in-patients were also administered the conventional (diazepam + analgesic) medication. The results on the intensity of withdrawal syndrome (WS), estimated according to DMS-III criteria, were compared to a third group of heroin addict in-patients (group C, 30 males-control group), treated only by conventional medication. RESULTS: The patients of the vitamin C-treated groups (in-patients and out-patients) experienced mild WS (in 46.6% to 50% of the subjects) in contrast to the control group patients, who experienced mild WS in 6.6% of the cases. The vitamin C-treated subjects expressed major WS ranging from 10% to 16.6%, in contrast to the untreated subjects (control group), who expressed a major WS in 56.6% of the cases. CONCLUSIONS: The results indicate that high doses of ascorbic acid administered orally, may ameliorate the withdrawal syndrome of heroin addicts. Further studies are needed in order to estimate the dose- and time-dependent effects of ascorbic acid treatment, and to clarify its mechanisms of action in the withdrawal syndrome. In Vivo
- Published
- 2000
5. Dataset for the van-drone routing problem with multiple delivery drop points.
- Author
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Athanasiadis E, Koutras V, and Zeimpekis V
- Abstract
The distribution of parcels is one of the most complex and challenging processes in supply chain execution. Lately, the development of both electronic and quick commerce has driven carriers and courier operators to identify more effective methods for express parcel delivery. To this end, the development of efficient distribution networks that aim in increasing customer experience while maintaining low operating costs is significant importance both for researchers as well as for practitioners. This article presents a dataset for the Van Drone Routing Problem with Multiple Delivery Points and Cooperation (VDRPMDPC). The latter examines a van-drone team from an operational viewpoint, where a van moves along a road network while the drone egress and ingress from a van to a nearby delivery location and then travels back to the van. This problem has been created with the aim of assessing the design of more sustainable and cost-effective delivery routes in urban and semi urban environments via the use of Unmanned Aerial Vehicles (UAVs). For the development of this dataset real geographical positions have been used located at two different areas of Athens, Greece. The entire benchmark is composed of 14 instances comprised by 20, 40, 60 and 100 clients respectively. The dataset is publicly available for its use and modification., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article., (© 2023 The Author(s).)
- Published
- 2023
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