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81.
82.
Lucio Negrini Lara Forsblom Jean-Luc Gurtner Stephan Schumann 《Vocations and Learning》2016,9(3):361-378
The dominant organizational form of vocational education and training in Switzerland is the dual-track system, in which trainees sign an apprenticeship contract with a training company. Notably, 10 % to 40 % of those contracts are terminated prematurely each year, depending on region and occupational category, which is an important topic of concern for politics, practice and research. Thus, premature contract terminations (PCTs) are associated with high costs for society, companies, and young people. This study of 335 companies involving cooks and painters from German-speaking Switzerland aims to investigate the relationship between training quality and PCT. Of these companies, 136 had been affected by a PCT, and 199 had not. The results indicate that training at the workplace is universally of rather high quality. In line with the previous literature, trainees evaluate quality significantly lower than trainers. Furthermore, there are considerable differences between the two occupations: cooks evaluate their training quality more positively than painters. Moreover, cluster analyses indicate that high quality training can help companies avoid PCTs. 相似文献
83.
In this study, we examined the use of cognitive tools provided in a problem-based hypermedia learning environment for sixth
graders. Purposes were to understand how the built-in tools were used, and if tool use was associated with different problem-solving
stages. Results showed that tools supporting cognitive processing and sharing cognitive load played a more central role early
in the problem-solving process, whereas tools supporting cognitive activities that would be out of students' reach otherwise,
and hypothesis generation and testing were used more in the later stages of problem-solving. The findings also indicated that
students increasingly used multiple tools in the later stages of their problem-solving process. The various tools, performing
different functions, appeared to enable students to coordinate multiple cognitive skills in a seamless way and, therefore,
facilitated their information processing. Results also suggested that students with higher performance scores made more productive
use of tools than students with lower performance scores. Findings of the study, are discussed. 相似文献
84.
The scalable extension of H.264/AVC, known as scalable video coding or SVC, is currently the main focus of the Joint Video Team‘s work. In its present working draft, the higher level syntax of SVC follows the design principles of H.264/AVC.Self-contained network abstraction layer units (NAL units) form natural entities for packetization. The SVC specification is by no means finalized yet, but nevertheless the work towards an optimized RTP payload format has already started. RFC 3984, the RTP payload specification for H.264/AVC has been taken as a starting point, but it became quickly clear that the scalable features of SVC require adaptation in at least the areas of capability/operation point signaling and documentation of the extended NAL unit header. This paper first gives an overview of the history of scalable video coding, and then reviews the video coding layer (VCL)and NAL of the latest SVC draft specification. Finally, it discusses different aspects of the draft SVC RTP payload format, including the design criteria, use cases, signaling and payload structure. 相似文献
85.
Paul T. Balwant Kamal Birdi Ute Stephan 《International Journal of Leadership in Education》2020,23(2):152-174
ABSTRACTThe conceptualization of destructive leadership has received increasing attention in recent times. Accordingly, researchers have developed a theoretical model of destructive leadership that highlights two manifestations as follows: (1) leading followers towards goals that contradict the organization’s interests and (2) the use of harmful methods in leading followers. The two manifestations of destructive leadership point to the concept being multidimensional. However, researchers rarely investigate the dimensionality of destructive leadership when measuring the concept in general and in instructor–student relationships. Moreover, the most prominent measure of destructive leadership fails to capture its two manifestations adequately. To address the apparent mismatch between the theory and measurement of destructive instructor-leadership, we enhance an existing measure of destructive leadership. Using a sample of 174 students from the U.K., the findings indicated that the two manifestations of destructive instructor-leadership can be measured by 13 items, and was composed of three dimensions including, irresponsibility, victimization and callous communication. These findings along with limitations and suggestions for future research are discussed. 相似文献
86.
87.
Stephan Michelle Register Jordan Reinke Luke Robinson Christine Pugalenthi Premkumar Pugalee David 《Educational Studies in Mathematics》2021,108(3):513-532
Educational Studies in Mathematics - The emergence of the COVID-19 pandemic has brought increased attention to the critical mathematical literacy of citizens in the United States and around the... 相似文献
88.
This article seeks to explain political persuasion in relation to second screening—people’s use of a second screen (i.e., smartphone/laptop) while watching television to access further information or discuss TV programs. Employing a two-wave-panel survey in the United States, results show this emergent practice makes people more open to changing their political opinions, particularly among those who habitually use social media for news or frequently interact with others in social media contexts. 相似文献
89.
Stephan Abele 《Vocations and Learning》2018,11(1):133-159
This article deals with a theory-based investigation of the diagnostic problem-solving process in professional contexts. To begin with, a theory of the diagnostic problem-solving process was developed drawing on findings from different professional contexts. The theory distinguishes between four sub-processes of the diagnostic problem-solving process and includes several hypotheses. According to the theory, the quality of the sub-processes “representing information” and “testing hypotheses” causally influences the diagnostic problem-solving success. Additionally, the theory suggests that the influence of “testing hypotheses” on the problem-solving success is higher than the influence of “representing information”. Moreover, the theory assumes that the influence of the quality of “representing information” on the success is mediated by the quality of “testing hypotheses”. These hypotheses were examined in the context of car mechatronics using diagnostic problems of the car sector, a computer-based assessment and a sample of car mechatronic apprentices (N = 339). To operationalize the sub-processes’ quality, observable critical behavior was theoretically identified and extracted from computer-generated log-files. The empirical results were largely in line with the hypotheses and indicated a (very) first corroboration of the theory in the context of car mechatronics. The theory could be helpful to investigate and teach diagnostic problem solving in different professional contexts. Further studies, however, should scrutinize whether the theory applies to other studies and professional contexts. 相似文献
90.
An important component of family life is sexuality education. Being comfortable with one's sexuality is an essential component of individual and family wellness. To this end, parents and teachers who intend to assist in young children's sexuality education must be comfortable and well informed.Nilufer P. Medora is Associate Professor, Department of Home Economics, California State University, Long Beach, CA. Stephan Wilson is Associate Professor, and Director, Center for Kentucky Children and Family Research, University of Kentucky, Lexington, KY. 40506. 相似文献