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Svjetlana Karabuva Vedran Carevi? Mislav Radi? Damir Fabijani? 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2013,23(3):351-359
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The aim of study was to: 1) examine the relationship between ABO blood groups and extent of coronary atherosclerosis in patients with chronic coronary artery disease (CAD), 2) compare ABO blood groups distribution in CAD patients and general population, 3) examine possible differences in traditional risk factors frequency in CAD patients with different ABO blood groups.Materials and methods:
In the 646 chronic CAD patients (72.4% males) coronary angiograms were scored by quantitative assessment using multiple angiographic scoring system, Traditional risk factors were self reported or measured by standard methods. ABO blood distribution of patients was compared with group of 651 healthy blood donors (74.6% males).Results:
Among all ABO blood group patients there was no significant difference between the extent of coronary atherosclerosis with regard to all the three scoring systems: number of affected coronary arteries (P = 0.857), Gensini score (P = 0.818), and number of segments narrowed > 50% (P = 0.781). There was no significant difference in ABO blood group distribution between CAD patients and healthy blood donors. Among CAD patients, men with blood group AB were significantly younger than their pairs with non-AB blood groups (P = 0.008). Among CAD patients with AB blood group, males < 50 yrs were significantly overrepresented when compared with the non-AB groups (P = 0.003).Conclusions:
No association between ABO blood groups and the extent of coronary atherosclerosis in Croatian CAD patients is observed. Observation that AB blood group might possibly identify Croatian males at risk to develop the premature CAD has to be tested in larger cohort of patients. 相似文献3.
This study is a detailed look at the level of understanding of fundamental ideas about blackbody radiation (BBR) among physics teachers. The aim is to explore associations and ideas that teachers have regarding blackbody radiation: a concept used routinely in physics and chemistry, which is necessary to understand fundamentals of quantum physics. In this explorative study, the responses of 106 high school physics teachers from 18 different cities in Turkey were examined using an online questionnaire during the 2014/2015 academic year. Male (88 %) and female (12 %) teachers with an average teaching experience of 17 years participated in this study. Teachers were asked about the concept of a “blackbody” and its radiation as well as about the closely related topics such as Wien’s law and the historic effect of understanding BBR on the development of modern physics. In this study, teachers’ spontaneous ideas about the BBR are depicted by “answer sculptures.” The answer sculpture is a new way of representing and categorizing responses provided by the participants. The analysis of answer sculptures revealed that the physics teachers’ factual knowledge and their conceptual understanding of the BBR are incomplete and even misleading. Here is what teachers we surveyed make of BBR as presented in our answer sculptures. This study is left at investigating teachers’ understandings of (1) blackbody radiation and (2) the significance of this scientific breakthrough. 相似文献
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Nuri Balta Víctor-Hugo Perera-Rodríguez Carlos Hervás-Gómez 《Education and Information Technologies》2018,23(2):837-850
Socrative is an online assessment and student response tool that provides opportunities to increase student engagement in the classroom. We used Socrative as an online homework completing platform to increase students’ exam scores in physics. To explore the relationships among factors and the educational effectiveness of Socrative, data from 85 undergraduate students’ final and midterm grades, and their responses to an attitude survey were used. The ANCOVA results demonstrated that the use of Socrative positively influenced students’ exam scores and a fairly significant correlation was found between students’ attitudes toward Socrative and final exam scores. Moreover, the results of the survey showed that students have moderately positive attitudes toward the use of Socrative as an online homework assignment platform. This empirical study indicates that the use of Socrative can go beyond engaging and motivating students and can be used as an online homework completing tool. 相似文献
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The utility of cadaver‐based approaches for the teaching of human anatomy: A survey of British and Irish anatomy teachers 
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下载免费PDF全文 Joy Y. Balta Michael Cronin John F. Cryan Siobhain M. O'Mahony 《Anatomical sciences education》2017,10(2):137-143
Utilizing reality anatomy such as dissection and demonstrating using cadavers has been described as a superior way to create meaning. The chemicals used to embalm cadavers differentially alter the tissue of the human body, which has led to the usage of different processes along the hard to soft‐fixed spectrum of preserved cadavers. A questionnaire based approach was used to gain a better insight into the opinion of anatomists on the use of preserved cadavers for the teaching of human anatomy. This study focused on anatomy teachers in the United Kingdom and Ireland. From the 125 participating anatomists, 34.4% were medically qualified, 30.4% had a PhD in a non‐anatomical science and 22.4% had a PhD in an anatomical science, these figures include ten anatomists who had combinations of MD with the two other PhD qualifications. The main findings from the questionnaire were that 61.6% of participants agreed that hard‐fixed formalin cadavers accurately resemble features of a human body whereas 21.6% disagreed. Moreover, anatomists rated the teaching aids on how accurately they resemble features of the human body as follows: plastic models the least accurate followed by plastinated specimens, hard fixed cadavers; soft preserved cadavers were considered to be the most accurate when it comes to resembling features of the human body. Though anatomists considered soft preserved cadavers as the most accurate tool, further research is required in order to investigate which techniques or methods provide better teaching tool for a range of anatomical teaching levels and for surgical training. Anat Sci Educ 10: 137–143. © 2016 American Association of Anatomists. 相似文献
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ABSTRACTThe aim of this study was to characterise thoroughly the differences between Physics Olympiad competitors' and regular students' successes and approaches in relation to counterintuitive dynamics problems (CDPs) in order to discover some of the differences between skilled problem-solvers and those with fewer such skills. A total of 23 Physics Olympiad competitors were found by snowball sampling, while 40 regular students were selected by means of convenience sampling to participate in this study. To compare the students' solutions, we ran through six CDP of low, medium, and high difficulty. Students' responses were analysed by means of both qualitative and quantitative methods. The findings indicate that Olympians are much more successful and careful in handling CDP than regular students. On the other hand, regular students' challenges were often associated with a superficial problem-solving approach and with inadequate analysis of the problem. It can be concluded that, when compared to regular students, expert students' in-depth analysis resulted in greater successes and more efficient approaches in solving counterintuitive problems. Hence, it may be claimed that, with the use of counterintuitive problems, teaching and assessment practices may be developed to help students advance to higher hierarchical categories of problem-solving. 相似文献
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The higher education landscape is undergoing major transformation, with a significant impact on the work and family practices of academics and professional staff. The purpose of this exploratory study is to examine the extent to which (1) time-related, (2) strain-related and (3) demographical variables impact on the work/family balance of academic and professional staff in Victorian universities and Technical and Further Education (TAFE) institutes. Our findings reveal that university employees experience greater work/family imbalance. The results of this research demonstrate how the three constructs contribute to work/family imbalance in academia, especially within the university sector. This paper is believed to be the first to explore work/family balance from an Australian cross-sectoral perspective. It provides an agenda for future theory and research to increase understanding of work/family balance from a cross-sectoral perspective. 相似文献
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Vedran Katavi? 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2014,24(2):217-222
This evidence-based opinion piece gives a short overview of the increase in retractions of publications in scientific journals and discusses various reasons for that increase. Also discussed are some of the recent prominent cases of scientific misconduct, the number of authors with multiple retractions, and problems with reproducibility of published research. Finally, some of the effects of faulty research on science and society, as well as possible solutions are discussed. 相似文献
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Nuri Balta Ali Eryılmaz 《International Journal of Science and Mathematics Education》2017,15(3):411-431
One way to fascinate, engage, arouse curiosity, motivate, and stimulate intellectual development in learning scientific concepts is to use counterintuitive questions. These questions make students aware of the inadequacies of their own thinking by exposing them to situations whose outcomes are inconsistent with what they would expect. In this study, a counterintuitive dynamics test (CIDT) is developed and administered to high school students along with the force concept inventory (FCI). After expert reviews, the initial version of the test consisting of 39 questions was administered to 87 students as a pilot study. After item analysis, a final version of 30 questions was developed; its internal consistency reliability coefficient was calculated as 0.826. The CIDT and FCI were administered to 229 students from 9 different high schools in Turkey. The results indicated that while in FCI students were mostly affected by everyday experiences and while in CIDT by carelessness and a superficial approach. Average scores for both tests were roughly equal and low. The results showed that the CIDT is a new test that measures another dimension of dynamic concepts and should be used along with the FCI. 相似文献
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