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基于音视频系统对IT技术的需求,分析在进行AV传输系统设计中,重点考虑网络拓扑结构、服务质量管理、PTP时钟三个问题。 相似文献
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BackgroundTemporal dynamics during the early adulthood transition among children in out-of-home care is a neglected research area, leaving the possibility of coping with childhood adversity over time a poorly understood topic.ObjectiveTo explore early adulthood education and employment trajectories among young adults who experienced out-of-home care during childhood and to examine how various care history factors predict these trajectories.ParticipantsWe use longitudinal birth cohort data comprising individual-level information from national registers of all children born in Finland in 1987 (N = 59,476, of whom 1893 were in care).Setting and methodsWe use trajectory clustering from a previous study on the 1987 birth cohort to compare trajectories between children in care and a propensity score–matched group of peers never in care. We investigated the association between care history factors and trajectories with multinomial logistic regression modeling.ResultsCompared with the matched peer group, children in care were less likely to enter trajectories characterized by education and employment (38%) and more likely to enter trajectories involving early parenthood (14%) or long periods of fragmented social assistance benefit receipt and unemployment (21%). Those on early parenthood trajectories were almost exclusively women, whereas those receiving social assistance benefits and experiencing unemployment for lengthy periods were mostly men. Entering disadvantaged trajectories was associated with, inter alia, placement as an adolescent, residential care, and aging out of care.ConclusionThe study demonstrates the relevance of examining longitudinal trajectories in children in care’s early adulthood. Many young adults with care experience need support in education and employment beyond young adult age. 相似文献
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随着互联网时代的到来,各类在线课程、远程教育服务得到了广泛应用。2020年新型冠状病毒肺炎疫情在全球的突发,使得远程在线教学成为学习和教育培训的主流方式,受到社会各界的关注。建立远程教育服务的质量标准和开展质量评价,就显得尤为重要和必要。本文对远程教育服务质量的相关概念、质量标准内容、如何构建质量评价指标体系、开展质量评价的程序等四个方面进行了讨论,最后对于远程教育机构如何提高服务质量、提升人才培养水平,提出了几点建议。 相似文献
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UN Sustainable Development Goal 4.2 specifies that countries need to ensure that all girls and boys have access to quality early childhood development, care and pre-primary education so that they are ready for primary school education. This paper considers where Bangladesh, China, India and Myanmar stand in terms SDG Target Indicator 4.2.2. National data sets were used to assess equitable access to early childhood education and policy documents were analysed to determine how countries address the quality dimension. Overall, findings indicate (i) large variations in access to early childhood education among Bangladesh, China, India and Myanmar; (ii) variations in access based on family wealth; (iii) the need to enhance the quality of the data collected to measure access to early childhood education and monitor progress towards Sustainable Developmental Goal Target Indicator 4.2.2; (iv) a lack of attention to the measurement of the quality of early childhood education; and (iv) the need to address policy-implementation gaps in all four countries. 相似文献
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Drawing upon the causal agency theory, this study examined the direct and indirect (via learning approaches) links between positivity and quality of college life (QCL) of business students in a transitioning market, Vietnam. Two studies were conducted to test these relationships using structural equation modeling. Findings from study 1, based on a sample of 428 business students, showed that positivity was positively related to QCL. Further, deep learning approaches mediated the relationship between positivity and QCL. Findings from study 2, based on a sample of 416 business students, reconfirmed the role of positivity in QCL. However, the indirect relationship between positivity and QCL was not significant, demonstrating that surface learning approaches did not mediate the relationship between positivity and QCL. The findings contribute to the literature on positivity in higher education by confirming the overarching role that positivity plays, directly and indirectly (via deep learning approaches), in QCL. 相似文献
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翁金芸 《上海教育评估研究》2020,9(6):44-48
随着世界范围的高等教育知识生产模式转型,美国社会对优质的服务学习课程的诉求日益强烈,高等教育进入关注课程评估的质量保障时代。基于服务学习课程的主体多元性、内涵丰富性、情境的动态性等特点,本文从评估目的、评估主客体及内容、评估方法及工具和评估运用等方面探析美国高校服务学习课程的评估方案,指出其评估理念、评估过程、评估方法和工具能为我国提供重要的借鉴意义。 相似文献
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以人因工程的思想为主导,在B2C电子商务服务流程分析的基础上,将人因工程学应用于B2C电子商务服务总流程,得出B2C电子商务服务各子流程的质量设计目标,通过控制服务流程来控制服务质量。研究结果表明:根据各质量特性的等级,B2C企业可根据自身情况优先完善等级为1和2的质量特性,逐步完善各运营环节,提升服务质量。以期为B2C电子商务企业有效改善自身的服务质量,进而为客户提供高效的、安全的、舒适的服务。 相似文献