排序方式： 共有64条查询结果，搜索用时 16 毫秒
51.
George N. Triantafyllakos George E. Palaigeorgiou Ioannis A. Tsoukalas 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(1):125-139
The development of educational applications has always been a challenging and complex issue, mainly because of the complications imposed by the cognitive and psychological aspects of student–computer interactions. This article presents a methodology, named We!Design, that tries to encounter the complexity of educational applications development from within the participatory design framework. The methodology enables computer literate students and designers to cooperate in the design of applications that (1) enhance typical educational processes for which students have extensive experience in, such as note taking or assessment, and (2) are well‐suited to the technological, social and cultural particularities of each educational environment. The methodology can be easily applied in real educational contexts and consists of two phases. During the first phase, students participate in short‐duration design sessions where they formulate needs, tasks and interface prototypes for the educational application under examination. In the second phase, the designers systematically analyse and then integrate student suggestions. In order to evaluate the methodology, it was applied in the design of two educational applications: an electronic assessment environment and a course website. A total of 86 undergraduate informatics students participated in 22 4‐hour design sessions. The methodology was evaluated by collecting students' responses through questionnaires and by introspection on the video recordings of the design sessions. The design sessions proved to be a very intriguing experience for the students while the methodology's products managed to respond to their personal needs and expectations in an efficient and effective way. 相似文献
52.
Maria Platsidou Ioannis Agaliotis 《International Journal of Disability, Development & Education》2008,55(1):61-76
In the literature concerning Greek special education teachers, there is little evidence regarding the perceived levels of burnout, job satisfaction, and job‐related stress factors. The present study focused on the above issues. A sample of 127 Greek special education teachers at the primary school level was tested with the Maslach Burnout Inventory, the Employee Satisfaction Inventory, and the Inventory of Job‐related Stress Factors (an instrument created for this study). Results indicated that Greek special education teachers reported average to low levels of burnout. They reported moderately high levels of satisfaction with their job, the principal, and the school organisation as a whole; they also reported average satisfaction with work conditions and low satisfaction with prospects of promotion and pay. Four factors were identified on the job‐related stress factors: teaching in a multi‐category classroom, programme organisation and implementation, assessment of students, and collaborations with other special education experts and parents. The special education teachers perceived none of these issues as particularly overwhelming. Moreover, few significant effects of age, gender, and family status were identified. The above results are consistent with other studies that have focused on Greek regular education teachers, which have indicated that, in general, this group do not experience high levels of occupational stress. 相似文献
53.
Microfluidic devices for studying heterotypic cell-cell interactions and tissue specimen cultures under controlled microenvironments 总被引：1，自引：0，他引：1
Microfluidic devices allow for precise control of the cellular and noncellular microenvironment at physiologically relevant length- and time-scales. These devices have been shown to mimic the complex in vivo microenvironment better than conventional in vitro assays, and allow real-time monitoring of homotypic or heterotypic cellular interactions. Microfluidic culture platforms enable new assay designs for culturing multiple different cell populations and∕or tissue specimens under controlled user-defined conditions. Applications include fundamental studies of cell population behaviors, high-throughput drug screening, and tissue engineering. In this review, we summarize recent developments in this field along with studies of heterotypic cell-cell interactions and tissue specimen culture in microfluidic devices from our own laboratory. 相似文献
54.
The present study investigated the reasons of parents request for the initial evaluation to determine their children’s special educational needs (SEN) and the state authorities’ response in the Greek educational system. For the needs of the present study, 250 case files were randomly selected from a state Centre for Differential Diagnosis and Support, which is responsible for the identification, evaluation and intervention for students with SEN. Various data were recorded, such as parental reason for requesting the evaluation, the official designation for each case, whether the parent accepted the evaluation results and whether any individualised intervention plan or other recommendations were specified. The analysis suggested that most cases involved students with learning disabilities, although a certain degree of disagreement in the classification of students was observed. For the majority of cases, parents accepted the official diagnosis; however, the state centre did not offer an intervention plan to benefit the students in the majority of the cases. Implications based on the present study findings are considered. 相似文献
55.
Ioannis Costas Batlle 《Cambridge Journal of Education》2019,49(4):417-434
The aim of this paper is to explore the extent to which non-formal education is being corroded by neoliberal values. Given non-formal education is frequently used to develop young people’s notions of citizenship, and that non-formal education providers are increasingly forced to operate within the free-market paradigm, it is significant to consider what forms of personhood are being championed. Qualitative data were gathered through semi-structured interviews and observations with coaches and young people from a youth sports charity in the UK. Focusing on a core aspect of non-formal education – caring relationships (as understood by Nel Noddings and Carl Rogers) – the findings suggest that the quality of coaches’ care for young people was conditioned by the extent to which adolescents re-shaped their personhood to align with neoliberal values of individual responsibility and discipline. Thus, the meanings of ‘care’ and ‘good citizenship’ were corroded by a neoliberal rationality. 相似文献
56.
Eleni A. Kortianou Ioannis G. Nasis Stavroula T. Spetsioti Andreas M. Daskalakis Ioannis Vogiatzis 《Cardiopulmonary Physical Therapy Journal》2010,21(3):12-19
Physical training is beneficial and should be included in the comprehensive management of all patients with COPD independently of disease severity. Different rehabilitative strategies and training modalities have been proposed to optimize exercise tolerance. Interval exercise training has been used as an effective alternative modality to continuous exercise in patients with moderate and severe COPD.Although in healthy elderly individuals and patients with chronic heart failure there is evidence that this training modality is superior to continuous exercise in terms of physiological training effects, in patients with COPD, there is not such evidence. Nevertheless, in patients with COPD application of interval training has been shown to be equally effective to continuous exercise as it induces equivalent physiological training effects but with less symptoms of dyspnea and leg discomfort during training.The main purpose of this review is to summarize previous studies of the effectiveness of interval training in COPD and also to provide arguments in support of the application of interval training to overcome the respiratory and peripheral muscle limiting factors of exercise capacity. To this end we make recommendations on how best to implement interval training in the COPD population in the rehabilitation setting so as to maximize training effects.Key Words: interval exercise training, chronic obstructive pulmonary disease, exercise tolerance, pulmonary rehabilitation 相似文献
57.
Background and objective: With the advent of an interprofessional approach to delivering health care in today's health care systems, should health care professionals be educated together? Supported by policy‐making circles worldwide, interprofessional education is accumulating a research literature at an exponential rate. Using one‐word search terms in the medline query box for scoping this body of literature, we obtained an unmanageable number of articles (342 338 in all fields). The objective of our study was to outline an efficient specific query. Methods: We created 1072 phrasal search terms consisting of a prefix, an adjective and a noun. Of those, 66 were prolific for the whole indexed period (1950–2006). Results: Only 2510 citations have the search term in all medline fields; of those 2049 were in title/abstract and 652 in title alone. From the 1950s, the citations were published at a slow rate, but the rate then exploded during the decade 1995 to 2006. The combination of prefixes ‘inter’ and ‘multi’ with the adjectives ‘professional’, ‘disciplinary’ and ‘shared’, and the nouns ‘education’, ‘learning’ and ‘training’ may retrieve almost all the relevant citations, while the terms ‘collaborative’ and ‘common’ may retrieve mainly irrelevant ones. The adjective ‘cohesive’ and nouns ‘practice’ and ‘role’ should be also considered. Conclusion: Phrasal search terms highly increased the relevance of medline ‐retrieved citations. 相似文献
58.
Ioannis E. Pountourakis 《Journal of The Franklin Institute》2002,339(2):145-159
In this paper, we propose the design and analysis of a reservation-based protocol for synchronous WDM multi-channel optical networks. The network architecture is based on a passive star topology and a new architecture for the network interface per station. The main objective of the scheduling algorithm and network interface is to maximize the performance measures by studying the problem of receiver collision phenomena at destination that multichannel nature of WDM networks introduces. We develop an analytical model based on a finite number of tunable receivers and a finite number of stations, following the “tell and go” policy for the access to communication system. Numerical results are showing the performance behavior for various number of channels, stations, and tunable receivers. Also, simulation results are presented for comparison with the results obtained by the performance analysis. 相似文献
59.
In most real-life bilateral teleoperators the available physical parameters are uncertain and the communications exhibit variable time-delays. In order to confront these situations and only assuming that a bound of the time-delays is known, the present work reports an adaptive controller which ensures asymptotic convergence of both position errors and velocities to zero, provided that a sufficient condition on the control gains is met. Compared to previous related works that only treated constant time-delays, the stability analysis does not rely on the cascade interconnection structure of the local and remote nonlinear dynamics and the linear interconnection map. Instead, the paper employs a different Lyapunov candidate function that incorporates a strictly positive term, the local and remote position error. Some simulations, in free space and interacting with a rigid wall, and experiments, using two nonlinear manipulators, illustrate the performance of the proposed control scheme in the presence of uncertain parameters and variable time-delays. 相似文献
60.
In this report, we demonstrate a simple and low cost method that can be reproducibly used for fabrication of microfluidic devices in nitrocellulose. The fluidic patterns are created via a laser-based direct-write technique that induces polymerisation of a photo-polymer previously impregnated in the nitrocellulose. The resulting structures form hydrophobic barriers that extend through the thickness of the nitrocellulose and define an interconnected hydrophilic fluidic-flow pattern. Our experimental results show that using this method it is possible to achieve microfluidic channels with lateral dimensions of ∼100 μm using hydrophobic barriers that form the channel walls with dimensions of ∼60 μm; both of these values are considerably smaller than those that can be achieved with other current techniques used in the fabrication of nitrocellulose-based fluidic devices. A simple grid patterned nitrocellulose device was then used for the detection of C-reactive protein via a sandwich enzyme-linked immunosorbent assay, which served as a useful proof-of-principle experiment. 相似文献