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Social informatics research offers insights into the relationship between information technologies and social contexts. However, the material roles of information technologies, and their interplay with the agentic work of social actors, have not been addressed. Drawing on a field study of 37 mobile knowledge workers, we examine the dual material roles (enabling and constraining) played by information technologies in their work practices. We also investigate how these workers exert agency by fashioning multiple information technologies into a functioning digital assemblage. Although information technologies provide consequential affordances that enable mobilization of work across spaces and times, they simultaneously present design-driven, local, organizational, and temporal technological constraints that require mobile knowledge workers to engage in “configuration work” to make information technologies function effectively. Building on a sociomaterial perspective, we further discuss the interplay of information technologies and work practices enacted by mobile knowledge workers, in which both human and technological agency are materialized.  相似文献   
233.
    
Structured reflection on practical teaching experiences may help pre‐service teachers to integrate their learning and analyze their actions to become more effective learners and teachers. This study reports on 12 pre‐service English as a second language (ESL) teachers’ individual tutoring of learners of English language writing. The data of the study are the writing journal entries that the pre‐service ESL teachers maintained during their tutoring experience. These journals had common elements: all were used by the pre‐service teachers to consider what funds of knowledge they bring to their teaching of ESL learners, to evaluate their roles as writers, learners and teachers and to reflect on the educational, social and cultural implications of teaching writing in English to speakers of other languages. This article describes ways in which both native and non‐native English speaking pre‐service teachers adapted their instruction to meet the particular needs of individual ESL writers and what they learned in the process. It provides insight regarding the value of using tutoring and reflection generally in teacher education and specifically in the preparation of teachers of ESL.  相似文献   
234.
    
ABSTRACT

Higher education is understood as essential to enabling social mobility. Research and policy have centred on access to university, but recently attention has turned to the journey of social mobility itself – and its costs. Long-distance or ‘extreme’ social mobility journeys particularly require analysis. This paper examines journeys of first-in-family university students in the especially high-status degree of medicine, through interviews with 21 students at an Australian medical school. Three themes are discussed: (1) the roots of participants’ social mobility journeys; (2) how sociocultural difference is experienced and negotiated within medical school; and (3) how participants think about their professional identities and futures. Students described getting to medical school ‘the hard way’, and emphasised the different backgrounds and attitudes of themselves and their wealthier peers. Many felt like ‘imposters’, using self-deprecating language to highlight their lack of ‘fit’ in the privileged world of medicine. However, such language also reflected resistance to middle-class norms and served to create solidarity with community of origin, and, importantly, patients. Rather than narratives of loss, students’ stories reflect a tactical refinement of self and incorporation of certain middle-class attributes, alongside an appreciation of the worth their ‘difference’ brings to their new destination, the medical profession.  相似文献   
235.
    
ABSTRACT

Control of relative humidity (RH) for collections care is challenging in U.K. historic houses because they are often highly ventilated with poor heat retention, a porous building fabric and naturally tend to high (60–80%) RH if unheated. The significance of the building means that large-scale modifications and installation of air handling systems may be unfeasible and undesirable for the conservation of the building. In the late 1980s the National Trust, for English, Wales and Northern Ireland, investigated conservation heating as an RH control method that works with the natural environment of historic buildings, mimicking historic heating and requiring only modification of existing heating services or a light touch installation of new heating systems. The National Trust adopted conservation heating as its preferred method for environmental control in historic buildings from the 1990s. This method was presented at the IIC 1994 Ottawa congress on preventive conservation. Conservation heating has since been adopted by many historic house management organisations, particularly across north-west Europe, where it is well suited to the climate. This paper reviews conservation heating developments implemented by the National Trust since 1994, in response to a changing external context, new knowledge and developments in operational practice.  相似文献   
236.
    
Two experiments with goldfish were performed to investigate the role of stimulus-reinforcer vs. response-reinforcer relationships in omission training and the role of stimulus localizability in a positive behavioral contrast paradigm. The directed behavior of fish, like that of pigeons and rats in other studies, was greatly influenced by positive stimulus-reinforcer correlations, as evidenced by maintained contacts of a signal for food, even though such responses terminated the signal and cancelled reinforcement delivery. Goldfish exhibited positive behavioral contrast when the signals for reinforcement and nonreinforcement were displayed directly on the response key, but no contrast was observed when variations in a diffuse houselight stimulus were used as signals for reinforcement or nonreinforcement. Analysis of sequential-trial data yielded effects analogous to Pavlovian positive and negative induction. Theoretical and methodological problems were briefly considered.  相似文献   
237.
    
Studies of primary education within the UK have shown that small groups can feature within classrooms; however, equivalent research within secondary education remains scarce. Research has established effective group work approaches, yet secondary teachers may encounter difficulties employing approaches tied to parameters embedded within primary education. This problem is compounded as minor adjustments to the conditions surrounding group work are known to have consequences for its efficacy within classrooms. This paper reports naturalistic systematic observation of group work practice within 23 science and English secondary classrooms in Scotland. Pupils completed tasks according to whether they were situated within group work or conventional classes. Forms of dialogue known to be conducive to learning were prevalent whilst pupils worked in groups. The change in pupils’ behaviours does not appear to stem from the content of teachers’ talk. Teachers’ behaviour suggested they approach small groups as smaller structures equivalent to a whole-class set-up.  相似文献   
238.
ABSTRACT

At tribal colleges and universities, libraries are challenged to serve Indigenous communities while supporting Western formal education. In this article, we examine three tribal higher education institutions in the southwestern United States: Diné College, the Institute of American Indian Arts, and Southwestern Indian Polytechnic Institute. In examining the collections and their use at these libraries, we find multiple strategies to “center” Indigenous knowledge despite most materials being written by and for non-Natives. We hope the strategies present here can inspire people at libraries of all types to consider ways to include the diverse perspectives of their own communities.  相似文献   
239.
    
This small-scale pilot research project investigates the prevalence of Speech Language and Communication Difficulties in a sample of children attending a Youth Offending Service in the UK. Using the CELF-4, approximately 90% of the sample displayed some form of language difficulty and, overall, this population displayed mild to moderate difficulties in this area. Youth Offending Team staff questionnaires were also analysed and it was found that staff have little understanding of the difficulties presented by the children on their caseloads, despite reporting that they felt confident in this area. Implications for practice and potential roles for educational psychologists are discussed.  相似文献   
240.
This study investigates the effect of method of assessment on student performance. Five research conditions go together with one of four assessment modes, namely: portfolio, case-based, peer assessment, and multiple choice evaluation. Data collection is done by means of a pre-test/ post-test-design with the help of two standardised tests (N=816). Results show that assessment method does make a difference: assessments do not produce overall effects on student performance. Moreover, student-activating instruction efforts do not automatically result in more extensive learning gains. Finally, test results show, when compared to other assessments, a statistically significant positive effect of the multiple choice test on students' test scores. However, students' preparation level and the closed book format of the tests might serve explanatory purposes.  相似文献   
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