浇注式沥青混合料高温性能研究

车辙是正交异性钢桥面沥青混凝土铺装主要病害之一 .采用汉堡轮辙试验机 ,提出了适宜于德国、考察浇注式沥青混合料高温性能的试验条件 ,测试和比较了不同浇注式沥青混合料的高温性能 .聚合物改性沥青混合料具有较高的抗车辙能力 .滞留时间和拌和频率对浇注式沥青混合料的性能有明显的影响     

Informelles Lernen und Medienbildung

Der Begriff des informellen Lernens wird hier auf den Wissenserwerb im Rahmen der allt?glichen Nutzung von Massenmedien bezogen. Bei der genaueren Betrachtung des Mediennutzungsverhaltens von verschiedenen Altersgruppen erweisen sich sozio-kulturelle Unterschiede als wichtige Pr?diktoren für Mediennutzung und -rezeption. Das Konzept der sozialen Milieus eignet sich zur Analyse sozio-kultureller Differenzen, auch mit Blick auf die Medienbildung. Bei Kindern scheint das Herkunftsmilieu der Eltern einen zentralen Einfluss auf deren Medienbildung zu haben, w?hrend im Jugendalter auch jugendkulturelle Rahmungen bedeutsam werden. Medienrezeption wird dabei nicht als einseitiger Prozess, sondern als kommunikative Interaktion zwischen Medienproduzenten und Medienkonsumenten verstanden. Letztere bringen in der Wahl von Medien, Genres und Rezeptionskontexten auch ?sthetische Pr?ferenzen und ihren sozio-kulturellen Habitus zum Ausdruck.     

The transformation of academic ideals: an Australian analysis

This article explores the role that universities play in shaping the relationship between academics and their work. Drawing on Miller and Rose's interpretation of our present era as being characterised by ‘Advanced Liberal’ governance, this article demonstrates how discourses seeking to govern academic labour enrol ideals about the academic and subjectify academic staff within strategies to govern their conduct. Entrepreneurial conceptions of ‘good’ academic conduct are valorised through such initiatives as performance evaluation, interdisciplinary research programmes and Graduate Certificates of university teaching and skills development. Drawing on the past literature and an analysis of three Australian public universities, this article proposes three ideals through which academics are enrolled into strategies to govern their conduct: ‘the career academic’, ‘the tribal academic’ and ‘the celebrity academic’. The centrality of an entrepreneurial sense of self within academic ideals contributes to the production of insidious effects within academic practices. The subjectification of academics, as entrepreneurial knowledge managers, may potentially produce strain within academics who fail to close the psychological distance between their self-perceptions and academic ideals. This article proposes that future investigations of the development of academic ideals and values should engage with an analysis of modes of self-government. The utility of self-government is explored in an analysis of the dynamic production of academic ideals within policies and programmes aimed at governing the behaviour of academic staff.     

Testing agile requirements models

This paper discusses a model-based approach to validate software requirements in agile development processes by simulation and in particular automated testing. The use of models as central development artifact needs to be added to the portfolio of software engineering techniques, to further increase efficiency and flexibility of the development beginning already early in the requirements definition phase. Testing requirements are some of the most important techniques to give feedback and to increase the quality of the result. Therefore testing of artifacts should be introduced as early as possible, even in the requirements definition phase.     

New perspectives for the evaluation of training sessions in self-regulated learning: Time-series analyses of diary data

The present study combines a standardized diary approach with time-series analysis methods to investigate the process of self-regulated learning. Based on a process-focused adaptation of Zimmerman’s (2000) learning model, an intervention (consisting of four weekly training sessions) to increase self-regulated learning was developed. The diaries were applied to evaluate this intervention. A sample of 40 civil engineering students participated and 21 of them answered questions in standardized diaries over a five-week period. The effectiveness of the intervention was demonstrated using trend analyses that evinced significant improvements in self-regulatory behavior. In addition, interrupted time-series analyses and control group comparisons confirmed essential treatment effects. The results demonstrate the advantages of using standardized diaries to obtain ecologically valid data on daily learning.     

Revealing the decision-making of dribbling in the sport of futsal

ABSTRACT

This study aimed to investigate why futsal players decide to dribble. For this purpose, we analysed 396 trials comprising the dribbles (n = 132), passes (n = 131) or shots (n = 133), performed by 70 male futsal players. Passing and shooting angles, and interpersonal distance, including their rates of change (velocity and variability), were regarded as measures of interpersonal coordination tendency and a comparison was made among dribbling, passing and shooting situations. In addition, the variables identified as constraints on deciding to dribble were analysed in relation to age categories, dribbling outcomes and futsal court zone. Results revealed that passing and shooting angles, and interpersonal distance showed higher variability in dribbling than in passing and shooting situations. The findings allowed us to conclude that decision-making on dribbling was influenced by the variabilities of passing angles as well as shooting and interpersonal distance, and that success in dribbling was affected by the variability of interpersonal distance. Such variabilities were interpreted concerning their meaning of risk and/or uncertainty in the execution of motor skills.     

Presumed Media Influences and Demands for Restrictions: Using Panel Data to Examine the Causal Direction

In line with theoretical approaches, such as the influence of presumed influence approach, many studies have shown that the stronger individuals perceive the media’s influence to be on others, the more the individuals demand restrictions on the media and its influence. However, these studies provided information only about the correlation between the two constructs and did not test the direction of their causal relationship. To close this research gap, a two-wave panel study among German citizens was conducted. The results show that, rather than being the other way around, it is the presumed strength of online media’s political influence on others that affects demands for restrictions. Moreover, the findings indicate that the presumed political influence of online media on others also affects the presumed reach of online media.     

Christian Education and the Image of the Pharisees

In this article the author presents ways in which one problem in intergroup relations may be handled by writers of Protestant church school materials. This is based on his intensive analysis of curriculum materials for their intergroup content in the Yale Intergroup Research Project.     

Insightful learning in the laboratory: Some experiences from 10 years of designing and using conceptual labs

This paper describes a series of projects on the design and implementation of ‘conceptual labs’ aimed at developing insightful learning, following work that began in 1994/1995. The main focus has been on courses in mechanics and electric circuit theory. The approach taken in designing these innovative curricula can be described as ‘design-based research’. A common feature in these learning environments is the use of technology as a tool to aid students’ inquiry. In addition, systematic variation, based on the theory of variation, has been introduced into the design of the assigned tasks. Results from conceptual inventories have demonstrated the success of conceptual labs. In the later projects, video recording was used to study students’ courses of action in labs. This paper describes how these studies have provided insights into conditions that are critical for learning and how these insights have helped the present author and his co-workers make further improvements to learning environments.