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The implementation of digital contact tracing applications around the world to help reduce the spread of the COVID-19 pandemic represents one of the most ambitious uses of massive-scale citizen data ever attempted. There is major divergence among nations, however, between a “privacy-first” approach which protects citizens’ data at the cost of extremely limited access for public health authorities and researchers, and a “data-first” approach which stores large amounts of data which, while of immeasurable value to epidemiologists and other researchers, may significantly intrude upon citizens’ privacy. The lack of a consensus on privacy protection in the contact tracing process creates risks of non-compliance or deliberate obfuscation from citizens who fear revealing private aspects of their lives – a factor greatly exacerbated by recent major scandals over online privacy and the illicit use of citizens’ digital information, which have heightened public consciousness of these issues and created significant new challenges for any collection of large-scale public data. While digital contact tracing for COVID-19 remains in its infancy, the lack of consensus around best practices for its implementation and for reassuring citizens of the protection of their privacy may already have impeded its capacity to contribute to the pandemic response. 相似文献
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The present study investigated students’ eye gaze while reacting to dissenting peers in groups. We measured the duration of gaze toward a confederate who disagreed with either a prevailing idea around which the group was coalescing or the process by which the group was solving a problem. Results indicated that participants gazed at dissenting confederates longer than at confederates in control groups. Qualitative analysis suggested that participants seemed to use eye gaze to understand the confederate, to prompt the confederate to contribute to discussions, to ease tensions, and to process information relative to the group’s task. Results provide an expanded look at how group members respond to dissenters, how conflict operates in some student groups, and how group members may differentiate acceptable and unacceptable disagreement. 相似文献
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王利平 《贵州教育学院学报》2008,24(10):48-50
回忆的激发问题是文艺心理学中的重要课题,它关系到文学创作中过去世界的艺术再现和艺术再造。联系中国古典诗歌,作家创作的关键在于寻找到一个激发记忆苏醒的触点,而且这个触点必须具有足够的情感强度。 相似文献
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舒咏平 《宁波职业技术学院学报》2004,8(4):48-52
广告创意思维作为一种典型的创新思维形式,其最突出的特征即“非线性”。广告创意思维的非线性特征,首先体现为科学理性为其规定着逻辑性的前提、并提供了确定性因素;其次体现为艺术想象为其提供了随机性因素;而二者交相作用,则使广告创意思维成果诞生的瞬间体现为广义灵感。 相似文献
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杜振华 《九江职业技术学院学报》2002,(2):17-19
本对压接技术的原理,程序及压接工艺对压接质量的影响做了初步的研究与探讨,同时对我厂进行的工艺试验进行分析,做出总结。 相似文献
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WANG Jing-qin WANG Hai-tao WEN Ming ZHU Yan-cai 《浙江大学学报(A卷英文版)》2007,8(3):459-463
Because of the different ways in which contact materials work, the basic requirements for silver metal oxide contact materials are different. They are anti-welded and anti-erosion when closed, anti-erosion when broken, and arc easily moved and have smaller contact resistance. In this paper, La2O3 is used as a stable oxide in contact material to replace CdO. A new type of Ag/SnO2-La2O3-Bi2O3 contact material is first obtained through using powder metallurgical method. Then electrical contact material parameter tester is used to test the electrical contact performance of the contact material. Through experiments, the arcing voltage and current curves, arcing energy curves, fusion power curves while broken and contact resistance while closed were obtained. Analysis of the results showed that the addition of La2O3 makes the contact material have the following advantages: smaller electrical wear, smaller arc energy, smaller contact resistance and arc is more easily extinguished. 相似文献
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Patricia?OdellEmail author Kathleen?Korgen Gabe?Wang 《Innovative Higher Education》2005,29(4):291-305
This study examined the effectiveness of curriculum-focused diversity initiatives on a college campus by determining the relationships between GPA, social class, year in school, residential status, racial diversity courses taken, and cross-racial friendships on the level of social distance between Whites-Blacks, Whites-Hispanics, Hispanics-Whites, Hispanics-Blacks, Blacks-Whites, and Blacks-Hispanics. The data suggest that, while the institution does a good job of bringing diverse groups of students to the campus, it does not effectively reduce the level of social distance among many members of the different racial groups on campus. Using the Intergroup Contact Hypothesis, the article concludes by suggesting means by which social distance among racial groups on campus might be decreased. 相似文献
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依据赫兹接触强度计算理论,着重研究了圆柱滚子轴承内、外圈及滚动体的接触应力。结果表明,当内圈与滚动体运动到与轴承所受经向载荷方向重合时,内圈与滚动体之间的接触应力最大。 相似文献
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Steve den Hollander Michael Lambert Ben Jones Sharief Hendricks 《Journal of sports sciences》2013,31(22):2578-2587
ABSTRACTThis study examined the validity of a tool that assesses tackle and ruck technique in training and established reference data for tackle, ball-carry and ruck technique at different levels of play in rugby union. One hundred and thirty-one amateur rugby union players; 37 senior, 51 first-grade academy and 43 second-grade academy players, participated in a two-on-two contact drill. The drill was filmed and the players’ tackle, ball-carry and ruck technique were assessed using standardized technical criteria. Senior level players scored significantly higher in all three assessments; tackle technique senior vs academy 1st (p < 0.01, effect size (ES) = 0.7, moderate), senior vs academy 2nd (p < 0.01, ES = 0.7, moderate); ball-carry technique senior vs academy 1st (p < 0.01, ES = 0.6, moderate), senior vs academy 2nd (p < 0.01, ES = 0.8, moderate); ruck technique senior vs academy 1st (p < 0.01, ES = 0.7, moderate), senior vs academy 2nd (p < 0.01, ES = 0.4, small). These findings emphasize the importance of developing contact technique to allow players to progress to higher levels, and provide validity to an assessment tool which can facilitate this process. 相似文献