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101.
Gabriel Weimann Nirit Weiss-Blatt Germaw Mengistu Maya Mazor Tregerman Ravid Oren 《Mass Communication and Society》2014,17(6):803-829
It is hard to imagine a more challenging arena for communication research than that presented by new media and their impact on our society. We have witnessed the fastest evolution in communication technology in human history and, along with it, the evolution of communication conceptions and theories used to assess its impact. More than a decade has passed since Chaffee and Metzger first published their intriguing article “The End of Mass Communication?” and suggested that the new media will change the notions of mass communication and, as a result, the theories used in communication research. Today, we know more about new media and its effect on communication, society, and communication theories. The present article, therefore, sets out to reassess Chaffee and Metzger's claim by describing the development of several core theories of communication research, namely the agenda-setting theory and the notions of media audiences and the Digital Divide, in light of the new media. Our review shows that the role played by communication technologies in social, cultural, political, and economic processes is as central and influential in the new media era as it was in traditional media environment and that, although theories may change to accommodate the changes of the new media environment, researchers are still dealing with the “old” issues of power and resistance, and structure and ownership. 相似文献
102.
103.
Gabriel Lima-Oliveira Gian Luca Salvagno Giuseppe Lippi Elisa Danese Matteo Gelati Martina Montagnana Geraldo Picheth Gian Cesare Guidi 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2014,24(3):343-349
Background:
Presently the necessity of fasting time for coagulation tests is not standardized. Our hypothesis is that this can harm patient safety. This study is aimed at evaluating whether a light meal (i.e. breakfast) can jeopardize laboratory coagulation tests.Materials and methods:
A blood sample was firstly collected from 17 fasting volunteers (12 h). Immediately after blood collection, the volunteers consumed a light meal. Then samples were collected at 1, 2 and 4 h after the meal. Coagulation tests included: activated partial thromboplastin time (APTT), prothrombin time (PT), fibrinogen (Fbg), antithrombin III (AT), protein C (PC) and protein S (PS). Differences between samples were assessed by Wilcoxon ranked-pairs test. The level of statistical significance was set at P < 0.05. Mean % differences were determined and differences between and baseline and 1, 2 and 4h samples were compared with reference change value (RCV).Results:
A significantly higher % activity of AT was observed at 1 h and 4 h after meal vs. baseline specimen [113 (104–117) and 111 (107–120) vs. 109 (102–118), respectively; P = 0.029 and P = 0.016]. APTT at 2 h was found significantly lower than baseline samples [32.0 (29.9–34.8) vs. 34.1 (32.2–35.2), respectively; P = 0.041]. The results of both Fbg and PS tests were not influenced by a light meal. Furthermore, no coagulation tests had significant variation after comparison with RCV.Conclusion:
A light meal does not influence the laboratory coagulation tests we assessed, but we suggest that the laboratory quality managers standardize the fasting time for all blood tests at 12 hours, to completely metabolize the lipids intake. 相似文献104.
105.
Gabriel Moran 《Religious education (Chicago, Ill.)》2013,108(4):495-502
The hundredth anniversary of any organization's founding is an occasion for celebration. At the least, one can celebrate the organization's longevity in surviving for a whole century. The organization has to be doing something right to exist that long. The Religious Education Association has done many good things in its hundred years of existence. These things should be remembered and praised. 相似文献
106.
Martha A. Gabriel Kandra J. Kaufield 《Mentoring & Tutoring: Partnership in Learning》2013,21(3):311-327
This article presents a reciprocal model of mentoring as an alternative approach to more traditional mentoring models. A mentor, experienced with online course delivery and pedagogy, worked with six online instructors over two academic terms within a reciprocal mentorship model. This model was designed to build a collaborative learning relationship which would benefit each partner. The mentoring was scheduled on a just‐in‐time basis in response to each online instructor’s needs. Study results show that the time commitments required to accomplish the goals of the mentoring project were challenging for participants; that post‐secondary institutions have a responsibility to provide multiple supports (including, for example, mentoring assistance) for faculty members teaching online; and that developing a structured mentoring program could facilitate a more effective reciprocal mentoring process, with benefits for both mentors and mentees. 相似文献
107.
Kilian Gloy Paul Weyhe Eric Nerenz Maximilian Kaluschke Verena Uslar Gabriel Zachmann Dirk Weyhe 《Anatomical sciences education》2022,15(2):360-368
In order to improve learning efficiency and memory retention in medical teaching, furthering active learning seems to be an effective alternative to classical teaching. One option to make active exploration of the subject matter possible is the use of virtual reality (VR) technology. The authors developed an immersive anatomy atlas which allows users to explore human anatomical structures interactively through virtual dissection. Thirty-two senior-class students from two German high schools with no prior formal medical training were separated into two groups and tasked with answering an anatomical questionnaire. One group used traditional anatomical textbooks and the other used the immersive virtual reality atlas. The time needed to answer the questions was measured. Several weeks later, the participants answered a similar questionnaire with different anatomical questions in order to test memory retention. The VR group took significantly less time to answer the questionnaire, and participants from the VR group had significantly better results over both tests. Based on the results of this study, VR learning seems to be more efficient and to have better long-term effects for the study of anatomy. The reason for that could lie in the VR environment's high immersion, and the possibility to freely and interactively explore a realistic representation of human anatomy. Immersive VR technology offers many possibilities for medical teaching and training, especially as a support for cadaver dissection courses. 相似文献
108.
Gabriel M Peterson 《Journal of the Medical Library Association》2010,98(2):135-139
Objective:
This research measures the effectiveness of the practice of correction and republication of invalidated articles in the biomedical literature by analyzing the rate of citation of the flawed and corrected versions of scholarly articles over time. If the practice of correction and republication is effective, then the incidence of citation of flawed versions should diminish over time and increased incidence of citation of the republication should be observed.Methods:
This is a bibliometric study using citation analysis and statistical analysis of pairs of flawed and corrected articles in MEDLINE and Web of Science.Results:
The difference between citation levels of flawed originals and corrected republications does not approach statistical significance until eight to twelve years post-republication. Results showed substantial variability among bibliographic sources in their provision of authoritative bibliographic information.Conclusions:
Correction and republication is a marginally effective biblioremediative practice. The data suggest that inappropriate citation behavior may be partly attributable to author ignorance.Highlights
- The citation of flawed articles occurs at a rate nearly equal to that of corrected versions.
- The practice of correction and republication is only marginally effective and does not prevent the continued citation of flawed articles post-correction, with the analysis finding only a slight reduction in the citation of flawed articles after publication of the corrected version.
- Neither MEDLINE nor Web of Science consistently alert users when dealing with corrected and republished literature.
Implications
- The practice of correction and republication would be more effective if prominent sources of bibliographic information were more consistent in providing users with information about the status of corrected and republished articles and the existence of post-publication modifications to the literature.
- It is incumbent upon the scientific community to raise the profile of post-publication changes to the literature to prevent the wasteful and potentially tragic consequences of scientists and medical professionals applying flawed information. Failure to do so will surely result in a reduction of public trust in the reliability of the scientific literature and its users.
109.
Marko Neumann M.A. Dr. Gabriel Nagy Univ.-Prof. Dr. Ulrich Trautwein Univ.-Prof. Dr. Oliver Lüdtke 《Zeitschrift für Erziehungswissenschaft》2009,12(4):691-714
This article examines differences in the mathematics and English proficiency of academic-track students in Baden-Württemberg (N?=?3526) and Hamburg (N?=?3734), investigating whether and to what extent these differences are reflected in the Abitur grades the students are awarded. The article also examines the extent to which scores in centrally conducted examinations provide better comparability than do coursework grades. Multilevel analyses predicting coursework grades in mathematics revealed clear between-state differences, with students in Hamburg being awarded higher mathematics grades than comparably able students in Baden-Württemberg. These differences are partly attributable to frame of reference effects and their impact on teachers’ grading practices. No corresponding between-state differences were found for English. Mathematics examination scores provided a much better measure of student achievement than mathematics coursework grades. The findings are discussed in terms of meritocratic access to sought-after university and training places. 相似文献
110.
Céline Darnon Fabrizio Butera Gabriel Mugny Alain Quiamzade Chris S. Hulleman 《European Journal of Psychology of Education - EJPE》2009,24(4):423-434
Classroom research on achievement goals has revealed that performance-approach goals (goals to outperform others) positively
predict exam performance whereas performance-avoidance goals (goals not to perform more poorly than others) negatively predict
it. Because prior classroom research has primarily utilized multiple-choice exam performance, the first aim of the present
study was to extend these findings to a different measure of exam performance (oral examination). The second aim of this research
was to test the mediating role of perceived difficulty. Participants were 49 4th year psychology students of the University
of Geneva. Participants answered a questionnaire assessing their level of performance-approach and performance-avoidance goal
endorsement in one of their classes as well as the perceived difficulty of this class for themselves. Results indicated that
performance-approach goals significantly and positively predicted exam grades. Performance-avoidance goals significantly and
negatively predicted grades. Both of these relationships were mediated by the perceived difficulty of the class for oneself.
Thus, the links previously observed between performance goals and exam performance were replicated on an oral exam. Perceived
difficulty is discussed as a key dimension responsible for these findings. 相似文献