超混沌视频加密系统的FPGA设计与实现

随着多媒体技术的不断发展，视频信息安全愈发受到人们的关注。为解决视频信息的安全问题，提出了一种基于现场可编程门阵列(FPGA)技术的超混沌视频加密方法。在加密过程中，一方面FPGA控制数字摄像头实现实时彩色视频信息的采集；另一方面，在计算机密钥指令下，利用FPGA使超混沌系统产生有效的伪随机序列，实现对所采集视频信息的数据和地址的双重超混沌加密。给出了具体的超混沌视频加密算法和设计流程以及FPGA实现结果。安全性分析表明，明密文主观视觉对比显著不同，密钥空间大，视频图像统计特性的相关性弱，说明基于FPGA的超混沌视频加密系统加密效果良好可靠。     

Examining eco-environmental changes at major recreational sites in Kenting National Park in Taiwan by integrating SPOT satellite images and NDVI

The integration of remote sensing data and vegetation indices can enable the investigation of dynamic changes in ecological environments. This study utilized SPOT satellite images from different periods as raw materials and combined geographic information system (GIS), normalized difference vegetation index (NDVI), and related statistical analyses to examine the condition of the ecological environment at the main terrestrial attractions of Kenting National Park in Taiwan. The results showed that changes in the ecological environment at the main attractions are presented to varying degrees on spatial-temporal scales. The changes are also relevant with respect to the numbers of artificial facilities and tourists. Moreover, change analysis via RGB WFM (write function memory insertion) can create spatial layouts for management. Well-conserved natural resources for sustainable development play a key role in attracting tourists. This study's investigation of the change in the main terrestrial attractions in the ecological environment of Kenting National Park may facilitate the preservation of natural resources.     

Do you want me to watch this ad on social media?: The effects of norms on online video ad watching

This study examines the influences of norms on consumers’ intentions to watch online video ads on social media. The social norms approach and the theory of reasoned action (TRA) were adopted as theoretical frameworks. In addition, the effects of interpersonal and social influences on the three personal-level norms were examined as the antecedents of normative perceptions. To test the hypothesized model, an online survey was conducted with 313 undergraduate students. A confirmatory factor analysis was used to validate the measurement constructs of the model, and a structural equation modeling was used to identify the relationships among constructs in the model. Findings indicate that personal injunctive norms and subjective norms were positively related to consumers’ intention to watch online video ads. Interpersonal and social influences were positively related to three normative perceptions regarding online video ad watching. The findings of this study contribute to the research stream on social norms approach and TRA and provide practical implications for advertising and marketing practitioners.     

Remote viewing as applied to futures studies

Remote viewing is set of related protocols that allow a viewer to intuitively gather information regarding a specific target that is hidden from physical view and separated from the viewer by either time or distance. Research suggests that the same processes used to gather spatially non-local information can also be used to gather information that is temporally removed from the observer. This paper reviews the most common protocols for remote viewing — including Coordinate Remote Viewing (CRV), Associative Remote Viewing (ARV), and Extended Remote Viewing (ERV).¹This remains a controversial field of study. While over 30 years of data has been gathered with statistically significant results frequently occurring under laboratory conditions, skeptics are not convinced that RV is a useful pursuit. In addition to this, some of the output from RV can be vague and subject to personal interpretation.A number of factors have been shown to improve the success rate for remote viewing, including the use of experienced subjects, individual testing, feedback of results, and a short time-interval between the percipient response and the targeted future event. Finally, there also appears to be a relationship between the effectiveness of remote viewing efforts and sidereal time, which may be interpreted as evidence that some aspects of RV are subject to the same physical laws as are other phenomena studied by science.Remote viewing and related processes merit further exploration and study. While remote viewing may never be completely understood, it has the potential to make a meaningful contribution to the professional futurist′s toolbox.     

浅谈非线性编辑系统在视频制作中的应用

非线性编辑系统是信息技术和数字视频技术相互结合、相互促进发展后的必然结果,本文阐述了非线性编辑系统的组成、特点与工作原理等方面的知识,对常见的非线性编辑系统及软件进行介绍,概括了非线性编辑系统具体工作过程及应用。     

体验式视频案例的开发与教学应用研究

随着信息技术的发展以及多媒体设备在实际教学中的广泛运用，视频案例教学在商学院中逐渐得到普及和运用。本文对目前案例教学中存在的问题进行分析，在对体验式教学和视频案例教学的研究综述基础上，提出了体验式视频案例，并结合笔者参与开发的视频案例，介绍了体验式视频案例教学的开发和使用过程，总结出了体验式视频案例教学在商学院教学中的独特优势，为未来案例教学的发展提供了一种新的思路。     

基于篇章观的高职院校视频教材开发研究

以篇章哲学观为理念引导,文章对目前高职院校教材建设中出现的问题进行了分析,探索构建高职院校视频教材建设的有效模式,并以篇章观为思维范式对高职院校的视频教材开发提出了建设性建议。     

The effects on tourism of airfare subsidies for residents: The key role of packaging strategies

Airfare subsidies for residents in remote tourism destinations can negatively affect the local tourism industry. In this paper, we study the effects of airfare subsidies on a remote region's tourism sector with a theoretical model of air transport and tourism service transactions involving a remote tourism region, the rest of the country and the rest of the world. We show that firms' widespread packaging strategies in tourism markets, i.e. selling tourism packages composed of air transport and tourism services at a single price, acts as hidden price discrimination, since the packages are cheaper than buying the services separately. Thus, in the presence of higher airfares due to a subsidy, the tourists not entitled to the subsidy have incentives to switch to a cheaper alternative, namely tourism packages. Consequently, a packaging strategy can lessen or even avoid the negative impacts of the subsidy on a region's tourism sector.     

基于机场应用场景的视频监控系统设计与实现

视频监控系统作为整个机场安全类系统的核心，是一个集中与分布相结合的系统，为机场的安全监视、设备监控、生产运行提供有效的技术手段。简要介绍了机场视频监控系统，搭建一套先进的、易操作、易维护的视频监控系统，从系统组成、系统结构、设计原则、功能等方面加以描述，在设计过程中充分考虑各项指标参数要求，能够及时响应、高速运转，通过本文的论述，使读者能够对机场领域视频监控系统的应用设计有一个整体的认识。     

Video teleconference use among geographically dispersed work groups: A field investigation of usage patterns and user preferences

Use of video teleconferencing (VTC) has been on the rise for several years, yet researchers have often discussed the failure of VTCs to support communication. The VTC facility at the MITRE Corporation is used more than would have been predicted by other research. Surveys were mailed to 300 MITRE employees who were known to have used our VTC facility or to have traveled (or both) during August of 1991. The survey asked respondents to describe at least one geographically dispersed work group of which they are a member, and it asked them to discuss how they choose among various approaches to communication, including holding face‐to‐face meetings and VTCs. Respondents felt that VTC is highly useful. It is best used for meetings that have little emotional content or requirements for interpersonal contact. The content of the meeting, however, was not the primary reason given for choosing between travel and VTCs. Cost and inconvenience of travel were cited as reasons for using VTC, and unavailability of VTC was cited as a reason to travel. Results are compared with those of conflicting studies.