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11.
This paper investigates bibliographic control of government publications and gray literature in Turkey, in order to determine what further measures are needed to support researchers in both Turkey and abroad. It reports the circumstances surrounding the creation of The Bibliography of Government Publications prepared in 1971, and outlines how gray literature was collected in various bibliographies and thesis centers according to types and made available to researchers. The development of systems for publication and access to government publications and gray literature are evaluated in the context of current studies and past endeavors to provide for bibliographic control and access to these sources. 相似文献
12.
Kapici Hasan Ozgur Akcay Hakan de Jong Ton 《Journal of Science Education and Technology》2019,28(3):231-250
Journal of Science Education and Technology - Although hands-on laboratory experiments are traditionally used in schools, virtual laboratories have entered today’s classrooms, due to their... 相似文献
13.
Yasemin U Budak Ka?an Huysal Hakan Demirci 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):97-102
Background
In heart failure patients, mean platelet volume (MPV) may reflect increased platelet activation or increased numbers of large, hyper-aggregable platelets. B-type natriuretic peptide (BNP) concentration in blood is a sensitive and specific marker of heart failure, correlating with the severity and prognosis of illness, in patients presenting with acute dyspnea to the emergency department. This study evaluated the correlation between BNP concentration and MPV.Material and methods
Data were collected from 319 patients admitted to the emergency department of a cardiology hospital from January–July 2014. EDTA blood samples drawn at admission were analyzed using automated hematology system, and BNP concentration was measured using a fluorescence immunoassay.Results
The study included 190 patients with and 129 without acute heart failure (AHF). These groups had BNP concentration of 200-5000 ng/L and 5-98 ng/L, respectively. MPV levels were significantly higher in the AHF group (P < 0.001). BNP concentrations were positively correlated with MPV (r = 0.41, P < 0.001) and neutrophil / lymphocyte ratio (r = 0.38, P < 0.001).Conclusion
Increased MPV values correlate with BNP concentration, an indicator of HF severity and clinical status, in patients with AHF admitted to the emergency department.Key words: natriuretic peptide, brain; heart failure; platelet; mean platelet volume 相似文献14.
Photography has a widespread usage in medicine and anatomy. In this review, authors focused on the usage of photography in gross and clinical anatomy. Photography in gross and clinical anatomy is not only essential for accurate documentation of morphological findings but also important in sharing knowledge and experience. Photographs of cadavers are supposed to demonstrate the required information clearly. Thus, photographs should be taken with certain techniques in order to obtain high quality and standardization. Camera, lens, lighting, background, and certain photographic techniques are among the factors to achieve precise images. A set of suggested guidelines for accomplishing these standards are given for anatomists. 相似文献
15.
Islamoglu Hakan Kabakci Yurdakul Isil Ursavas Omer Faruk 《Educational technology research and development : ETR & D》2021,69(2):1025-1054
The purpose of this study was to develop a mobile learning acceptance model for pre-service teachers and to examine the relationships among technology acceptance factors. The literature on mobile learning acceptance lacks studies on pre-service teachers and studies that include concrete mobile learning scenarios. To overcome these problems, we have developed and implemented a mobile-technology-enabled information technology course. The data collection and analysis were conducted in two separate studies. First, we developed a mobile learning acceptance scale and applied confirmatory factor analysis with 408 participants. The final instrument included 28 items measuring eight technology acceptance factors, namely behavioral intention, attitude towards use, perceived usefulness, perceived ease of use, social influence, facilitating conditions, self-efficacy, and anxiety. After this, we collected a new set of data from 316 participants to examine the relationships among the factors using structural equation modeling. In both studies, we investigated the respective models’ invariance across gender and discipline groups, and both models fulfilled invariance requirements. The results indicated that perceived ease of use and social influence have direct effects on behavioral intention, whereas self-efficacy has an indirect effect. Depending on the group, the explained variance of behavioral intention ranged between 18.1% and 60.6%.
相似文献16.
Making learning fun: Quest Atlantis, a game without guns 总被引：18，自引：0，他引：18
Sasha Barab Michael Thomas Tyler Dodge Robert Carteaux Hakan Tuzun 《Educational technology research and development : ETR & D》2005,53(1):86-107
This article describes the Quest Atlantis (QA) project, a learning and teaching project that employs a multiuser, virtual
environment to immerse children, ages 9–12, in educational tasks. QA combines strategies used in commercial gaming environments
with lessons from educational research on learning and motivation. It allows users at participating elementary schools and
after-school centers to travel through virtual spaces to perform educational activities, talk with other users and mentors,
and build virtual personae. Our work has involved an agenda and process that may be called socially-responsive design, which
involves building sociotechnical structures that engage with and potentially transform individuals and their contexts of participation.
This work sits at the intersection of education, entertainment, and social commitment and suggests an expansive focus for
instructional designers. The focus is on engaging classroom culture and relevant aspects of student life to inspire participation
consistent with social commitments and educational goals interpreted locally.
This research was supported in part by a CAREER Grant from the National Science Foundation, REC-9980081 and by the National
Science Foundation Grant #0092831. 相似文献
17.
Budak YU Huysal K Polat M Tarakçi G Uçar H 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(1):121-126
Introduction
The aim of the present study was to validate prothrombin time (PT) international normalized ratio (INR) results obtained using Steelex test reagents and a Steelex coagulometer (Steelex Scientific Instrument Company, Beijing, China), in comparison with use of a well-established standard test employing Pacific Hemostasis reagents (Fisher Diagnostics, Middletown, VA, USA) and Teco Coatron A4 coagulometer (Teco Medical Instruments GmbH, Neufahrn, Germany).Materials and methods:
Between- and within-day coefficients of variation (CVs) of both assays were calculated using control samples provided by the test manufacturers. Samples from 90 subjects were collected and INR values were determined in a double-blind parallel manner employing both systems.Results:
The within-day coefficients of variation (CVs) in INR estimates ranged from 2.6% (INR = 1.12) to 3.1% (INR = 2.51) for the Steelex system and from 2.1% (INR = 1.09) to 1.8% (INR = 2.8) for the Pacific test; the between-day values ran from 3.4% (INR = 1.16) to 7.9% (INR = 2.64) and from 3.3% (INR = 1.1) to 2.3% (INR = 2.7), respectively. Passing-Bablok fit of the of the Steelex and Pacific methods yielded the equation: Steelex INR = 0.85 (0.79–0.91) × Pacific INR + 0.12 (−0.02–0.21), whereas the CUSUM linearity P value was < 0.01. The mean bias as determined by the Bland-Altman test was −0.156 (−0.912–0.600).Conclusion:
The results obtained using Steelex reagents and the M600H coagulometer are not equivalent to those obtained using Pacific Hemostasis reagents and a Teco Coatron A4 coagulometer, at least in the therapeutic range. 相似文献18.
19.
Education and Information Technologies - This study aims to enrich a theme in the science course in the distance education process with augmented reality-based applications and to examine the... 相似文献
20.
Canbaz H Dirlik M Colak T Ocal K Akca T Bilgin O Tasdelen B Aydin S 《Journal of Zhejiang University. Science. B》2008,9(6):482-488
Objective: To investigate the effect of recurrent laryngeal nerve (RLN) identification on the complications after total thyroidectomy and lobectomy. Methods: Total 134 consecutive patients undergoing total thyroidectomy or thyroid lobectomy from January 2003 to November 2004 were investigated retrospectively. Patients were divided into two groups: RLN identified (Group A) or not (Group B). The two groups were compared for RLN injury and hypocalcaemia. Results: The numbers of patients and nerves at risk were 71 and 129 in Group A, and 63 and 121 in Group B, respectively. RLN injury in Group A (0) was significantly lower than that in Group B (5[7.9%]) patients, 7 [5.8%] nerves) for the numbers of patients (P=-0.016) and nerves at risk (P=0.006). Temporary hypocalcaemia was significantly higher in Group A than in Group B (14 [24.1%] vs 6 [10.3%], P=0.049).Permanent complications in Group B were significantly higher than those in Group A (13 [20.6%] vs 4 [5.6%], P=0.009). Conclusion: RLN injury was prevented and permanent complications were decreased by identifying the whole course and branches of the recurrent laryngeal nerve during total thyroidectomy. 相似文献