Constructing Better Futures via Video

Abstract

Some individuals can rise above disadvantaged environments by cognitively constructing better ones. One way to go beyond limited environments is by creating video futures. This article describes applications of video-based futures planning, in which teenagers find meaning in their current educational setting to prepare them for adulthood. We also describe the systematic training of school-based personnel to support the skills and positive attitudes of their students with carefully planned and edited videos that show future capability of the individual (self modeling and feedforward). We report diverse case studies to illustrate the methodologies, the range of applications, and typical outcomes. Follow-up of dissemination (especially the Video Futures Start-Up Kit) indicates successful replications, particularly in Kentucky and Aotearoa New Zealand.     

对于影视职业技术教育的思考

随着影视艺术的发展,影视教育逐步建立并迅速发展开来,而其中的职业技术教育更以其实践技术优势,在近几年的发展中形成了较大的规模。随着科学技术的进步和市场经济的发展,影视职业教育的地位和作用日益凸现。影视教育教学过程和方法上的实践性、开放性特点必然要求其办学中具有与之适应的环境和条件,面对现阶段灵活多变的社会需求,合理专业设置、优化资源配置、完善职业标准,已经成为影视专业技术人才培养的重要组成部分。     

When video cameras watch and screen: Privacy implications of pattern recognition technologies

Computer vision technologies based on pattern recognition software will soon allow identifying human behaviour that deviates from a pre-defined normality. Such applications are foreseen, amongst others, to be used in public places with purposes of crime prevention, especially in the context of the fight against terrorism. This technology increases the level of automation of video surveillance, changing the main nature of surveillance. The balance of power between the citizen and the State is altered, calling for a new balancing of interests. The automation of risk detection moreover raises the issue of the protection against partially automated decision-making. This paper will deal with the challenges raised by proactive video surveillance technologies to the way how privacy and security have been balanced so far. Attention will moreover be brought to the new safeguards that should be devised to protect the citizens from increased scrutiny and growing automation of the decision-making process.     

视频侦查的有效途径和方法

科技的进步和经济的发展,使得视频监控的应用领域越来越广泛,视频监控系统在防范和打击刑事犯罪活动方面的成效日益凸显,研究和掌握实践中行之有效的发现犯罪线索、收集犯罪证据和快速处置违法犯罪事件的途径和方法,可以大幅提高公安机关快速打击刑事犯罪的效率和提升社会治安综合治理的能力。     

Detection of frame deletion in HEVC-Coded video in the compressed domain

In this paper, we propose an algorithm for detecting frame deletion in HEVC-coded video in the compressed domain. Specifically, we focus on the frame type changes occurring upon frame deletion, which cause slight differences between the coding patterns in original and forged video. Then, we identify discriminating coding patterns for use as features, which are classified by machine learning classifiers. Furthermore, we propose video sequence integrity detection on a group-of-picture basis, which is computationally efficient and robust even when applied to static videos and videos with genuine scene changes. The experimental results show that the proposed technique can classify HEVC-coded videos more accurately than previous methods. In addition, the results demonstrate that the selected features work harmoniously in discrimination and that the learning-based classifiers are more robust and reliable than model-based classifiers.     

Violent Video Games as Exemplary Teachers: A Conceptual Analysis

This article presents conceptual and empirical analyses of several of the “best practices” of learning and instruction, and demonstrates how violent video games use them effectively to motivate learners to persevere in acquiring and mastering a number of skills, to navigate through complex problems and changing environments, and to experiment with different identities until success is achieved. These educational principles allow for the generation of several testable hypotheses, two of which are tested with samples of 430 elementary school children (mean age 10 years), 607 young adolescents (mean age 14 years), and 1,441 older adolescents (mean age 19 years). Participants were surveyed about their video game habits and their aggressive cognitions and behaviors. The first hypothesis is based on the principle that curricula that teach the same underlying concepts across contexts should have the highest transfer. Therefore, students who play multiple violent video games should be more likely to learn aggressive cognitions and behaviors than those who play fewer. The second hypothesis is based on the principle that long-term learning is improved the more practice is distributed across time. Therefore, students who play violent video games more frequently across time should be more likely to learn aggressive cognitions and behaviors than those who play the same types of games for equivalent amounts of time but less frequently. Both hypotheses were supported. We conclude by describing what educators can learn from the successful instructional and curriculum design features of video games.

远程实时监控的图像传输技术

视频信息因能给人们全方位的真实感受而在多种领域中得到广泛应用,鉴于监控系统网络化、远程化的发展趋势,本文对远程实时监控的图像传输相关问题的探论具有一定的现实意义。     

基于视频透视吞咽功能研究评价针刺阿呛组穴联合康复训练治疗脑卒中后吞咽障碍的疗效分析

目的 基于视频透视吞咽功能研究（video fluoroscopic swallowing study, VFSS）评价针刺阿呛组穴联合康复训练治疗脑卒中后吞咽障碍的疗效。方法 将50例脑卒中后吞咽功能障碍的患者,随机分为对照组和治疗组,每组25例。对照组仅采用康复训练,治疗组采用针刺阿呛组穴联合康复训练,比较两组患者治疗前及治疗30 d后VFSS评分及功能性经口摄食量表（functional oral intake scale, FOIS）评分。结果 两组治疗后FOIS评分均较治疗前升高,差异均有统计学意义（P＜0.05）,治疗组FOIS评分升高值显著大于对照组（P＜0.05）。与治疗前比较,两组治疗后吞食稀钡、浓钡、糊钡、包钡的VFSS评分均显著升高,差异均有统计学意义（P＜0.05）;且治疗组治疗后吞食稀钡、浓钡、糊钡的VFSS评分升高值显著大于对照组（P＜0.05）。结论 针刺阿呛组穴联合康复训练可以在一定程度上改善脑卒中后吞咽障碍患者的吞咽功能。     

论侦查实践中视频监控运用机制的完善

随着侦查理论研究和实践的广泛运用,利用视频监控侦查破案势必成为一条全新、简捷、高效的侦查途径。但当前视频监控在建设、运用和法律规范方面仍存在一些尚需解决的问题。随着"科技强警"理念的不断深入,我们要积极转变传统思维,使视频监控在侦查实践中的作用最大化发挥,从而更好地保障社会稳定和公民基本权利。