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The study of management of innovation is crucial to media management research, helping explain how technology diffusion affects the communication industry and providing a glimpse into its future. This meta-analysis looks at the recent history of mass communication scholarship (1983–2008), addressing newsroom changes to determine whether a mainstream managerial theory—sociotechnical literature—garners adequate use. The researchers discovered numerous references—mostly indirect—to sociotechnical systems (STS) theory, yet found sporadic use of a true managerial emphasis as expressed through the analysis of STS theory's principles- and frames-specific theoretical framework. Implications of the findings and future, alternative directions for research are proposed. 相似文献
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Sylvie Barma 《Cultural Studies of Science Education》2011,6(3):635-661
Adopting activity theory as a theoretical and methodological framework, this case study illustrates how a teaching and learning
situation is planned and implemented over a series of nine 75-min biology classes by a high school science teacher in the
context of pedagogical reform. The object of this study emerges within a favourable context of science education curricular
reform in Quebec, Canada. By examining the interaction between the poles of an activity system sharing the same object, this
case study illustrates how one teacher’s teaching practice is redefined and how some aspects of her teaching personality orient
the ways in which she contextually mobilizes new tools and members of her school community in order to implement an awareness
campaign on the risks of tanning salons. 相似文献
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Tijl Vermassen Charles Van Praet Filip Poelaert Nicolaas Lumen Karel Decaestecker Piet Hoebeke Simon Van Belle Sylvie Rottey Joris Delanghe 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(3):439-449
Introduction
Although prostatitis is a common male urinary tract infection, clinical diagnosis of prostatitis is difficult. The developmental mechanism of prostatitis is not yet unraveled which led to the elaboration of various biomarkers. As changes in asparagine-linked-(N-)-glycosylation were observed between healthy volunteers (HV), patients with benign prostate hyperplasia and prostate cancer patients, a difference could exist in biochemical parameters and urinary N-glycosylation between HV and prostatitis patients. We therefore investigated if prostatic protein glycosylation could improve the diagnosis of prostatitis.Materials and methods
Differences in serum and urine biochemical markers and in total urine N-glycosylation profile of prostatic proteins were determined between HV (N = 66) and prostatitis patients (N = 36). Additionally, diagnostic accuracy of significant biochemical markers and changes in N-glycosylation was assessed.Results
Urinary white blood cell (WBC) count enabled discrimination of HV from prostatitis patients (P < 0.001). Urinary bacteria count allowed for discriminating prostatitis patients from HV (P < 0.001). Total amount of biantennary structures (urinary 2A/MA marker) was significantly lower in prostatitis patients compared to HV (P < 0.001). Combining the urinary 2A/MA marker and urinary WBC count resulted in an AUC of 0.79, 95% confidence interval (CI) = (0.70–0.89) which was significantly better than urinary WBC count (AUC = 0.70, 95% CI = [0.59–0.82], P = 0.042) as isolated test.Conclusions
We have demonstrated the diagnostic value of urinary N-glycosylation profiling, which shows great potential as biomarker for prostatitis. Further research is required to unravel the developmental course of prostatic inflammation.Key words: diagnostic marker, prostatitis, urinary asparagine-linked glycosylation 相似文献25.
Guylaine Martineau Paul A. Lamarche Sylvie Marcoux Paul-Marie Bernard 《Early education and development》2001,12(2):275-289
Objective. This population-based study assessed the relationship between characteristics of early intervention programs for hearing-impaired children and academic achievement. Methodology. The study was conducted on the elementary school-age population of six regions of the province of Quebec. Of the 301 hearing-impaired children registered, 112 met the eligibility criteria and participated in the study. The characteristics of early intervention which had been assessed were: age of initial access, the intensity, target and nature of services, service setting, coordination mechanisms, communication mode and parental compliance. Results. After adjustment for child and family characteristics and the other service variables studied, higher academic achievement was found to be significantly associated with services that (a) were initiated before children reached the age of two, (b) were parent-centered rather than child-centered, and (c) emphasized auditory intervention and an oral mode of communication. The results also showed that the socioeconomic environment in which the children lived significantly influenced the effect of certain characteristics of early intervention programs. The present study identified service characteristics with regard to specialized intervention and service delivery conditions that could lead to more effective early intervention programs. 相似文献
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Agns Lattuati-Derieux Jean-Philippe Echard Sylvie Thao-Heu Bertrand Lavdrine 《Journal of Cultural Heritage》2010,11(4):1-481
Nicéphore Niépce carried out a lot of meticulous experiments that led him to the invention of photography. In particular, in the 1820s, he obtained heliographs by coating a substrate with a light-sensitive substance, which was then exposed to light under a paper print made translucent with the help of varnish. The objective of the work described here is to determine how Niépce made these paper prints transparent. Did he use his experimental knowledge on photosensitive resins, or did he apply commonly used recipes of his time to make paper transparent? To date, no studies have been carried out on the varnish used by Nicéphore Niépce and no previous research has undertaken analytical investigations on Nicéphore's prints, using Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Gas Chromatography/Mass Spectrometry (GC/MS). In this paper, we identify the varnishes used by Nicéphore Niépce on four transparent prints, now belonging to the Nicéphore Niépce museum in Chalon-sur-Saône, France. The varnish he used was based on a diterpenic Pinaceae sp. resin (most probably colophony). The finding is supported by historical knowledge about varnishes. 相似文献
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Our reply emphasizes the benefits of cooperation between researchers in developing a comprehensive model of cognitive development that considers the constraints of human brain structures and the interplay of general laws of development and individual differences in developmental pathways within the context of social and cultural environments. 相似文献
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This research introduces a method to construct a unified representation of teachers and students perspectives based on the actionable knowledge discovery (AKD) and delivery framework. The representation is constructed using two models: one obtained from student evaluations and the other obtained from teachers’ reflections about their teaching practice. We integrate both models into one that incorporates students’ opinions and teachers’ knowledge and meta-knowledge. This method provides a representation of a teacher’s best teaching practices where student perceptions are presented as patterns in the form of association rules. The representation adds actionability to association rules by demonstrating how students’ association rules are related between themselves and how they are related to teacher’s meta-knowledge. 相似文献
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