课程文献中心 更多>>

关键词： 课堂教学   教学质量评价   数字化转型   数字技术  

摘要： 数字技术的巨大应用潜力使其在课堂教学质量评价实时监测、数据挖掘、数据分析和数据处理等方面的技术优势得以凸显,可大幅提高课堂教学质量评价的客观性、精准性和全面性.在数字时代背景下,厘清课堂教学质量评价与数字技术融合的理论依据和技术依据有助于加深对课堂教学质量评价数字化转型的认识与理解.当前课堂教学质量评价数字化转型的困境主要在于评价主体数字素养不足、算法黑箱制约评价方式、评价内容参照标准缺乏、评价反馈数据伦理失范等.基于此,提出以下课堂教学质量评价数字化转型实现路径:提高评价主体数字素养,坚守评价育人初衷;加强多维度数据采集,动态规划数字算法;重塑具身评价内容,构建多元融合评价方式;规范技术使用规约,健全数据监督管理制度.

关键词： Autonomous sensory meridian response (ASMR)   service experience   ASMR triggers   repeat purchase behaviour  

摘要： This paper evaluates the role of Autonomous Sensory Meridian Response (ASMR) in service experience. ASMR is an enjoyable and relaxing sensation accompanied by head and/or body 'tingles' in response to a large variety of triggers. The paper studies the effects of six ASMR triggers (touch, sound, watching hands, soft speech, caring attention, soft temper) on customers' service experience in six service settings with different nature of the interaction (hairdresser, coffee shop, hotel check-in, doctor, cashier, customer service call). The sample includes 2709 respondents: 2269 ASMR-sensitive and 440 ASMR-non-sensitive. The findings include: (i) the effect of each trigger depends on the service;(ii) experiencing ASMR increases the likelihood of a repeat purchase;(iii) experiencing ASMR enhances customer experience in high contact-long duration services but hinders it for low contact-short duration ones.

关键词： Social media usage   organizational resilience   service innovation   resource-based view  

摘要： While companies are increasingly investing in social media to foster innovation and outperform their competition, it is still unclear how social media may successfully drive corporate innovation in the service context. Drawing on the resource-based view and the organizational resilience literature, this study empirically examines the indirect impact of social media usage on service innovation. Based on responses from 235 Chinese firms, we test our theoretical model using variance-based structural equation modeling. We find that social media usage has a positive impact on incremental service innovation through precursor resilience and that it enhances radical service innovation through improvisation resilience. Furthermore, technical modularity strengthens the positive effects of social media usage on precursor resilience while weakening the effects of social media usage on improvisation resilience. Our study enriches the literature by providing a nuanced understanding of the role of social media usage in service innovation.

关键词： space cryogenic propellant tank   self-pressurization   near-wall baffle   microgravity   numerical simulation  

摘要： During the long time on-orbit operation of space cryogenic propellant tanks, the continuous evaporation of cryogenic propellant in the tanks due to heat leakage from the wall surface causes the pressure in the tanks to rise continuously (i. e. the self-pressurization phenomenon), jeopardizing the safety of the tanks and the spacecraft. In order to prevent large liquid sloshing, large-scale spatial tanks are equipped with sloshing-suppression barriers, which may have a significant impact on the gas-liquid flow and heat transfer inside the tank. In this paper, the effect of the near-wall barrier on the gas-liquid two-phase flow and its thermodynamic process in the storage tank is numerically simulated using the VOF method, in order to reveal the mechanism of the effect of the sloshing-suppression barrier on the self-pressurization process of the storage tank. Numerical simulation results of liquid sloshing and thermodynamic characteristics in partially liquid-filled storage tanks with and without near-wall barriers in different gravity environments show that: the liquid surface configuration in the tank is determined by the Bond number, and the liquid surface basically stays flat in the condition of Bond number much larger than 1, while the liquid surface climbs along the wall of the tank in the case of Bond number less than 1;near-wall sloshing-suppression barriers can significantly reduce the fluctuation of the center of mass of the fluid in the tank;when the near-wall sloshing-suppression barrier is located below the liquid surface, it can hinder the rise of liquid warming in the near-wall area, which makes the liquid surface temperature in the near-wall area low, and the self-pressurization rate is obviously lower than that of the storage tank without a barrier. Finally, based on the simulation analysis and comparison of the effect of the near-wall barrier size, the recommended configurations of the near-wall sloshing-suppression barriers under different gravity c