343 research outputs found
LINKING UK REPOSITORIES: Technical and organisational models to support user-oriented services across institutional and other digital repositories. SCOPING STUDY REPORT
No full textThe JISC commissioned the project partners to undertake a scoping study whose aim is to identify sustainable technical and organisational models to support user-oriented services across digital repositories. Open access repositories of interest to UK further and higher education communities were cited as having particular relevance. The study is intended to inform strategies to support access and use of repositories, with a view to the establishment of a national repository services infrastructure or framework
A Comparative Study Of The Attitudes, Self-Efficacy, And Readiness Of American Versus Turkish Language Teachers
No full textContrasting studies of foreign language teacher education have become a growing interest among educationists and researchers in different countries (Yoder, 1992; McKay & Montgomery, 1995; Baker & Giacchino-Baker, 2000; Stachowski & Sparks, 2007; Firmin, M. W., Firmin, R & MacKay, F. M., 2008; LaFond & Dogancay-Aktuna, 2009; Ozek, 2009). Such studies emphasize the importance of comparing and understanding different education programs and enables student teachers to think more globally with respect to their language career. These contrasting studies investigate different aspects of foreign language (FL) teaching programs. The present study reports a comparison of the student teachers of an American and Turkish university regarding their satisfaction and readiness in language teaching, and their attitudes towards language teaching theories and teacher education program. The study aims to discover the teacher trainees’ perceptions with an in-depth understanding and compare the differences among them. Therefore, the researcher employed an interconnection of qualitative and quantitative approaches. Data were collected through self-report questionnaires and interviews. The results indicated that there were some significant differences between the subjects in two groups regarding their readiness, their attitudes towards their education programs and their self-perceptions as teacher candidates
Scholarly communication and open access : research communities and their publishing patterns [New Trends in Scholarly Communication : how do Authors of different research communities consider OA?]
No full textAt the time of the Budapest Declaration, self-archiving supporters looked like a revolutionary, "anti-commercial publishers" movement. Today, after some years debate (and technological innovation in research and scientific e-publishing), antagonist positions are able to compromise and consider the tradeoffs.
What is really changing in the Authors' attitude towards institutional or disciplinary repositories, and peer reviewed open access journals?
Many recent papers have investigated these topics. From these sources we can note that Biomedical Authors behave differently from Physicists, Astronomers and Mathematicians, who have been using open archives for such a long time. Therefore we intend to analyze these different trends in the diverse communities.
Several aspects also deserve a careful attention: the role of new OA journals in evaluation processes (i.e. their impact and citations), implementation and maintenance costs of institutional repositories, the evolution of bibliometric indicators.
We intend also to discuss the role of libraries in service innovation and e-publishing promotion. The main areas where a key role may be played are: institutional repository management and users' training, the promotion of OA journals and information about evaluation methods (both qualitative and quantitative).
We think that the transition towards new communication models may be a great opportunity that libraries have to be ready to support
Synthesis, Crystal Structure and Thermal Properties of N-Acetyl-3-(2-furyl)-5-ferrocenyl-2-pyrazoline and N-Acetyl-3-(2-thienyl)-5-ferrocenyl-2-pyrazoline
No full textYILDIRIM, ARZU OZEK/0000-0002-2185-7009WOS: 000301792600014Two novel ferrocenyl substituted N-acetyl-2-pyrazolines, N-acetyl-3-(2-furyl)-5-ferrocenyl-2-pyrazoline (3) and N-acetyl-3-(2-thienyl)-5-ferrocenyl-2-pyrazoline (4), have been synthesized and characterized by FTIR, H-1-NMR, C-13-NMR techniques, elemental analysis and X-ray structure analysis. Thermal properties of these compounds have been determined by TGA, DTA and DSC analysis. Compound 3 (C19H18N2O2Fe) crystallizes in the monoclinic space group P21/c and Z = 4, with a = 8.6970(4) , b = 18.4725(9) , c = 11.0041(5) , beta = 110.942(3)A degrees. Compound 4 (C19H18N2OSFe) crystallizes in the orthorhombic space group Fdd2 and Z = 16, with a = 84.242(2) , b = 13.5416(5) , c = 5.9405(2) , beta = 90A degrees. In terms of crystal packing, each compound shows different molecular arrangement, which are stabilized by C-H center dot center dot center dot O intermolecular weak hydrogen bonds, and/or C-H center dot center dot center dot pi interactions.Research Board Akdeniz UniversityAkdeniz University [BAP-2007.01.0105.001]; Faculty of Arts and Sciences Ondokuz Mayis UniversityOndokuz Mayis University [F. 279]The authors acknowledge the Research Board Akdeniz University (grand no BAP-2007.01.0105.001) for financial support, the Faculty of Arts and Sciences Ondokuz Mayis University, for the Stoe IPDS-II diffractometer (purchased under grand F. 279 of the University Research Fund) and the Faculty of Arts and Sciences Gaziosmanpasa University, for the Thermal and NMR analyses
Digoxin for preventing or treating neonatal respiratory distress syndrome
No full textBackground Lendrum 1955 suggested that pulmonary edema secondary to congestive heart failure may contribute to neonatal respiratory distress syndrome (RDS). Based on this hypothesis, investigators began to use digitalis glycosides to improve myocardial contractility and decrease congestive heart failure. The first use of digitalis glycosides in infants with RDS was reported by Stahlman 1959. Stahlman reported a reduction in mortality in an uncontrolled trial of digitalis in infants with RDS. Objectives To assess the effect of digoxin on mortality in premature infants at risk for or with RDS. Search strategy Searches were made of the Oxford Database of Perinatal Trials, Medline (MeSH terms: digoxinlimits: age groups, newborn infantspublication type, clinical trial), previous reviews including cross references, abstracts, conference and symposia proceedings, expert informants, and journal handsearching in the English language. When updated in December 2008, the search was expanded to include Medline, CINHAL, and Embase (MeSH terms and text words: digoxin or digitalislimits: age group, all infantspublication type: clinical trial). Selection criteria Randomized and quazi-randomized controlled trials of digoxin in either the prevention or treatment of RDS are included in this overview. Data collection and analysis Data regarding clinical outcomes were excerpted from the trial reports by one review author (RS) and checked by the second review author (EO). Data were analyzed according to the standards of the Cochrane Neonatal Review Group. Main results Two randomized controlled trials have studied the effects of digoxin in the prevention and treatment of RDS. No improvement in respiratory status or mortality was noted. Meta-analysis of the effect of digoxin given to infants at risk of or with RDS on mortality does not suggest any benefit of digoxin treatment (typical relative risk 1.27 95% CI 0.78 to 2.07typical risk difference 0.06, 95% CI -0.06 to 0.17). Authors' conclusions Although hemodynamic disturbances play a role in the overall pathogenesis of respiratory distress syndrome, the specific contribution of early congestive heart failure (unrelated to hemodynamically significant patent ductus arteriosus) does not appear to be a significant factor in RDS. Treatment with digoxin has no proven value in infants solely affected with RDS
Subependymal giant cell astrocytomas in tuberous sclerosis
No full textTwo cases of tuberous sclerosis with subependymal giant cell astrocytoma are presented. This rare autosomal dominant disorder was also detected in family members of the patients who had never had any symptoms of cerebral involvement. Both patients underwent surgery because of signs of increased intracranial pressure
A low cost optoelectronic system for test of software for neural network based pattern recognition
No full textA STANDARDISABLE MODEL OF FOCAL CEREBRAL-ISCHEMIA IN NORMOTENSIVE RATS
No full textIn this study various techniques with different periods of ischaemia have been used in order to describe a standardisable and reproducible model of reversible focal cerebral ischaemia in normotensive rats. Cerebral blood flow to the left hemisphere of the rats was temporarily interrupted by middle cerebral artery occlusion only in four rats of each group, by simultaneous middle cerebral artery and ipsilateral common carotid artery occlusion in six rats of each group, and by middle cerebral artery and bilateral common carotid artery occlusion in six rats of each group. Within each group temporary ischaemia lasted for 1, 2 or 3 h and animals survived for 24 h following reperfusion. An infarct of significant size with low standard deviation was observed after 3 h of distal middle cerebral artery and bilateral common carotid artery occlusion followed by 24 h of reperfusion. We have found that the ratio of the infarct volume to the supratentorial brain volume is a more reliable criterion (with less standard deviation) than infarct volume alone and could be used for comparison of results obtained in experimental studie
Congenital pineoblastoma and parameningeal rhabdomyosarcoma: concurrent two embryonal tumors in a young infant
No full textBackground: Pineoblastomas are very rare brain tumors in fetus and neonates, comprising only 0.9% of congenital brain tumors. The occurrence of multiple tumors of different histopathologic types in the same individual is a rare event, most often encountered in hereditary cancer syndromes. Case report: We report a female fetus presented with a congenital pineoblastoma at the 32nd week of gestation, with hydrocephalus and concurrent parameningeal embryonal rhabdomyosarcoma in early infancy. Results: Cytogenetic analysis showed normal karyotype in the peripheral blood of the patient, and p53 mutational analysis revealed no germ line mutations. Discussion: This is the first case with concurrent congenital pineoblastoma and parameningeal embryonal rhabdomyosarcoma in early infancy. We suggest that concurrence of these tumors could be due to mutations in other tumor suppressor genes or secondary to exposure to unknown in utero factors
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