463 research outputs found

    Study of Digital Competence of the Students and Teachers in Ukraine

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    Professional fulfillment of the personality at the conditions of the digital economy requires the high level of digital competency. One of the ways to develop these competencies is education. However, to provide the implementation of digital education at a high level, the digital competency of the teachers and students is a must. This paper presents explanations on the level determination of the digital competencies for teachers and students in Ukraine according to the DigComp recommendations. We tried to identify the main factors that reflect the degree of readiness teachers and students for digital education based on their self-evaluation. We also attempted to estimate the level of digital competencies based on the analysis of Case-Studies execution results. The complex analysis let us assess the connection between respondents’ self-evaluation and their real competencies. Here we provide a methodology and a model of level competencies determination by means of a survey, expert case rating and the results of the statistical analysis. On the basis of the obtained results, this paper suggests further research prospects and recommendations on the digital competency development in educational institutions in Ukraine

    Cost analysis and related factors in patients with traumatic hand injury

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    The aim of this study was to measure the direct and indirect costs and factors influencing these costs in patients presenting following traumatic hand injury. We assessed patients aged 18-65 years who were in work. Hand injury severity and functional status were assessed. Direct costs, including medical care expenses, and indirect costs, including lost productivity, were calculated. Seventy-nine patients of a mean age of 32 years were included. The mean direct cost for each patient was 1772(471772 (47% of total cost), and the indirect cost was 1891 (53% of total cost). Injury severity, time to return to work, and hospitalization time were the main parameters of increased total cost in a linear regression analysis. © The Author(s) 2012

    Observing the effects or rapid industrialization, on forestry and pastures by remote sensing

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    Rapid and uncontrolled industrialization in an area and related population growth require fast assessments for the actual land-cover/land-use (LC/LU) maps and related practices, in order to avoid the overuse and damaging of the landscape beyond sustainability. Growth of industry, brings an increase in population beyond its needs, increasing the housing demands. All these may cause the loss of vegetation cover in the region, mostly of forestry and grassland in the present case (YILDIRIM et al., 1997, 2002). Modern remote sensing and geographic information system (GIS) technologies fit well for the evaluation and long term monitoring of such effects. In the present case, a region of Gebze County (Kocaeli-Turkey), 50 km east of metropolitan Istanbul is considered as a pilot site for long term monitoring of such rapid changes and their effects on the vegetation cover and environment. The region is observed between 1985-2005, by satellite images and quantified the LC/LU changes. Comparisons were then made among the observed patterns over these years and also between images and the land-use patterns projected by the government planning offices carried out in the region in the start of the interval considered. The LC/LU patterns quickly overshot the planned industrial and settlement areas in much less than a decade. The research work also includes an interval just before the 17 August 1999 Marmara Earthquake devastated the dwellings and roads in the area to a large extent. Therefore, the results could also be used, for a comparison of before and after earthquake inventories in many areas. The results in 2005 were indicative of rather fast recovery of the region from the negative effects of earthquake, in many respects. Further, a projection from the observed trends to the year 2010 (the next 5 years) was also made: Industrial areas are expected to increase to about 25% of all the total land area, from a start in 1986, of 2.4% to a 9% in a decade. Forests, although constitutionally protected, also may reduce to 20% (from a starting value of 30%). However the main loser among vegetation cover types was the pasture, which started at 39% in 1986 and is reduced to 5% in 2005. Extrapolation to 2010 is indicative of the possibility that no pasture area would be left in the region

    Seroprevalence of Toxoplasma gondii and Neospora spp. Infections in Arab Horses, Southwest of Iran

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    Background: Because of the economic importance of the Arab race horses and also the role of Toxoplasma gondii and Neospora spp. in abortion and reproductive failure of these animals, we decided to perform this study. Objectives: We designed this study to investigate the seroprevalence of anti-Toxoplasma gondii and anti-Neospora spp. antibodies in Arab horses from 12 cities of Khuzestan province in southwest of Iran. Materials and Methods: From October 2009 to March 2011, a total of 235 blood samples were collected from jugular veins of Arab horses of different ages and genders from 12 cities of Khuzestan province. All the sera were tested for anti-Toxoplasma antibodies using the modified agglutination test (MAT) and the existence of anti-Neospora antibodies were tested using N-MAT for Neospora spp. Results: According to the MAT results, antibodies to T. gondii were found in 114 (48.5%) of 235 sera with titers of 1:20 in 84, 1:40 in 19, 1:80 in four, 1:160 in four, and 1:320 in three horses. According to the N-MAT results, antibodies to Neospora spp. were found in 47 (20%) of 235 sera with titers of 1:40 in 39, 1:80 in five, and 1:160 in three horses. We did not observe any statistically significant differences regarding age groups and genders between seropositive and seronegative horses for Neospora spp. using chi-square (chi(2)) test, but it seemed that anti-Toxoplasma antibodies were more prevalent in older horses ( >= 10 years old). Conclusions: The results indicated that Arab horses are exposed to these parasites in southwest of Iran. Further research is required to determine the genomic structures of these parasites in Arab horses in southwest of Iran

    Enhancing the blue luminescence behaviour of the Li co -doped novel phosphor ZnB 2 O 4: Tm 3+

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    [Abstract Not Available]Scientific Research Projects of Cukurova University-Turkey [FDK-2017-7905]The authors are grateful for the financial support from the Scientific Research Projects of Cukurova University-Turkey, FDK-2017-7905 project

    Competing Interactions in DNA Assembly on Graphene

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    We study the patterns that short strands of single-stranded DNA form on the top graphene surface of graphite. We find that the DNA assembles into two distinct patterns, small spherical particles and elongated networks. Known interaction models based on DNA-graphene binding, hydrophobic interactions, or models based on the purine/pyrimidine nature of the bases do not explain our observed crossover in pattern formation. We argue that the observed assembly behavior is caused by a crossover in the competition between base-base pi stacking and base-graphene pi stacking and we infer a critical crossover energy of eV. The experiments therefore provide a projective measurement of the base-base interaction strength

    Benefits and harms of perioperative high fraction inspired oxygen for surgical site infection prevention: a protocol for a systematic review and meta-analysis of individual patient data of randomised controlled trials.

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    INTRODUCTION The use of high fraction of inspired oxygen (FiO2) intraoperatively for the prevention of surgical site infection (SSI) remains controversial. Promising results of early randomised controlled trials (RCT) have been replicated with varying success and subsequent meta-analysis are equivocal. Recent advancements in perioperative care, including the increased use of laparoscopic surgery and pneumoperitoneum and shifts in fluid and temperature management, can affect peripheral oxygen delivery and may explain the inconsistency in reproducibility. However, the published data provides insufficient detail on the participant level to test these hypotheses. The purpose of this individual participant data meta-analysis is to assess the described benefits and harms of intraoperative high FiO2compared with regular (0.21-0.40) FiO2 and its potential effect modifiers. METHODS AND ANALYSIS Two reviewers will search medical databases and online trial registries, including MEDLINE, Embase, CENTRAL, CINAHL, ClinicalTrials.gov and WHO regional databases, for randomised and quasi-RCT comparing the effect of intraoperative high FiO2 (0.60-1.00) to regular FiO2 (0.21-0.40) on SSI within 90 days after surgery in adult patients. Secondary outcome will be all-cause mortality within the longest available follow-up. Investigators of the identified trials will be invited to collaborate. Data will be analysed with the one-step approach using the generalised linear mixed model framework and the statistical model appropriate for the type of outcome being analysed (logistic and cox regression, respectively), with a random treatment effect term to account for the clustering of patients within studies. The bias will be assessed using the Cochrane risk-of-bias tool for randomised trials V.2 and the certainty of evidence using Grading of Recommendations, Assessment, Development and Evaluation methodology. Prespecified subgroup analyses include use of mechanical ventilation, nitrous oxide, preoperative antibiotic prophylaxis, temperature (2.5 hour). ETHICS AND DISSEMINATION Ethics approval is not required. Investigators will deidentify individual participant data before it is shared. The results will be submitted to a peer-review journal. PROSPERO REGISTRATION NUMBER CRD42018090261
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