高清摄像机几个技术难题的解决方法——以松下AJ-3700高清摄像机为例

高清电视相对标清电视技术标准上有很大差异,一方面表现为高清设备操作要求更为科学、严格,需要更多辅助设备对摄像机进行控制;另一方面高清设备同时也给创意者更大的自由发挥空间,但前提是创作者必须熟悉设备的技术特点。结合松下AJ-HPX3700MC就高清摄像机技术及其应用问题进行探讨。     

高清摄像机使用电视教材的开发研究

随着技术的不断进步,高清摄像机的应用越来越普及,并且向多元化发展。高清摄像机使用的知识与技能培训为培养高清影像人才,推动广电行业的发展具有重要的意义,也具有广泛的需求。"高清摄像机使用"电视教材能普及高清技术基本知识,提高学习者使用高清摄像机的技能,它比普通的电视教材更具有针对性、实用性和适用性。详细解析"高清摄像机使用"电视教材的设计导向,提炼出电视教材的开发原则,建构"高清摄像机使用"电视教材的开发策略,介绍电视教材的开发过程和手段,以期为开发此类电视教材提供相应的理论和实践参考。     

信息动态

索尼发布第六代网络高清摄像机12月3日索尼公司发布近30款代表索尼视频安防最前沿技术的产品,此次亮相宣告索尼系列网络高清摄像机步入全新时代。本次推出的第六代网络高清摄像机,是     

一款适用于现代煤矿监控系统的高清网络摄像机的设计

本文实现了一款采用H.264编码标准的720P高清网络摄像机设计与实现,符合当今煤矿行业高清视频监控技术的发展和应用。该款高清网络摄像机是以SONY CMOS图像传感器和TI达芬奇数字媒体处理器为设计基础的,特别适合部署在矿井内部、出入口、物资储备等重要场所。     

再创新高，索尼发布第六代网络高清摄像机

12月3日“再创新高——索尼第六代网络高清摄像机新品品鉴会”在北京拉开帷幕。在为期两天的展示中,近30款代表索尼视频安防最前沿技术的产品首次亮相业界,宣告索尼全系列网络高清摄像机步入全新一代。     

索尼发布第六代网络舟清摄像机

2012年12月3日“再创新高-索尼第六代网络高清摄像机新品品鉴会”在北京拉开帷幕。在为期两天的展示中,近30款代表索尼视频安防最前沿技术的产品首次亮相业界,宣告索尼全系列网络高清摄像机步入全新一代。     

浅谈校园小型高清采编系统的搭建

一、高清系统在现代教育技术方面的应用趋势近年来,有一个词越来越被大家所熟悉,这个词便是"高清"。我国将使用高清方式全程转播2008年北京奥运会。这无疑加快高清摄像机快速地普及和发展。     

索尼扩展高清产品解决方案引领高清监控新时代

在2009中国国际社会公共安全博览会(CPSE2009)期间,索尼就已推出了高清网络快球SNC-RH124、SNC-RH164以及高清枪机半球SNC-CH140和SNC-DH140.这四款引导行业潮流的新一代高清网络摄像机.     

电视播控技术实验教学系统设计与实现

电视播控技术是影视艺术传媒专业的一门综合性技术类课程,实验教学系统的设计和构建对训练和提升学生动手能力至关重要。分析了国内高清电视直播系统发展现状,结合电视播控技术人才培养目标和实验教学中存在的问题,综合分析了市场上几款主流高清摄像机、特技切换台和硬盘录像机的主要技术指标,设计并实现了电视播控技术实验教学系统,可为高校影视技术实验室建设提供参考方案。     

DV拍摄课堂教学的尝试——兼谈新课改下的教师课堂素养

刚买了部索尼XR-100E摄像机,正赶上听肖雅蓉老师的公开课,便由着兴致以初学者的水平全程拍摄了这节课。由于是HD高清画质,因而占用了摄像机80G存储硬盘中1G多的空间。     

Keyboarding Difficulties: Frequency and Characteristics among Higher Education Students with Handwriting Difficulties

Word processing is often considered an alternative writing mode or test accommodation for students with specific learning disorders who have handwriting difficulties (HD). Therefore, it is important for researchers and educators to understand the difficulties these students may encounter while using this technology. We examined the frequency of keyboarding difficulties (KD; i.e., slow keyboarding) among higher education students with HD, and the underlying functions (language, fine-motor, and attention) of these disabilities compared to students with only HD. Of the 50 students with HD, 24 percent were found to have KD. This group had significantly lower scores in phonological and orthographic skills, but not in fine-motor and attention functions, compared to students with HD alone. These results support models suggesting that handwriting and keyboarding share linguistic processes. They also suggest that for students with lower linguistic functions, word processing via keyboarding may not be an effective writing mode, and that these students may require tailored accommodation.     

ISP器件在数字I/O电路中的应用

介绍了在系统可编程(ISP)技术及ISP器件的特点,分析了变M/T转速测量电路的工作原理,并由高密度ISP器件设计了位置控制系统单片I/O电路.     

线粒体功能异常与亨廷顿舞蹈病的病理发生机制

亨廷顿舞蹈病（Huntington’s disease,HD）是一种致命的遗传性神经退行性疾病,它是由亨廷顿蛋白N-端的多聚谷氨酰胺延长造成的。该病表现为纹状体中的中型棘神经元（medium spiny neurons,MSN）逐渐丢失。HD的致病机理还不完全清楚,目前越来越多的研究结果显示线粒体在HD中发挥着重要作用。已有证据充分表明了HD细胞中线粒体的形态和结构发生了明显改变。此外,HD细胞中线粒体某些电子传递链复合物蛋白活性或蛋白表达水平的降低,以及突变亨廷顿蛋白对细胞核基因转录的影响进一步引起了线粒体功能障碍。除了线粒体形态和功能的改变,HD细胞线粒体的Ca2＋稳态也发生了紊乱,且线粒体的氧化压力水平显著升高,进而导致HD细胞线粒体基因组DNA损伤。由于线粒体在细胞凋亡过程发挥着重要作用,因此HD细胞中线粒体的这些变化揭示了线粒体异常参与了HD细胞特别是HD神经细胞的凋亡过程。本综述将集中探讨HD中线粒体的一系列异常变化,为阐明HD的发病机理和HD治疗提供一些启发。     

偶次非球面镜在指纹采集系统中的应用研究

指纹识别的技术实现,其理论基础就是光电数字图像处理,故采集到的指纹图像的质量好坏对后续图像处理的难易至关重要。设计出清晰、畸变小甚至无畸变的指纹识别镜头是制造指纹识别仪的关键。随着光学加工技术的发展,目前非球面镜片已广泛应用于光电产品的各个领域,本文采用普通材质的棱镜及非球面透镜,可使指纹采集系统的畸变控制在0.2%以内。     

Technology, math, and the early learner: Models for learning

As today’s preschoolers become the school-age children of tomorrow, early learning educators are faced with a unique and exciting challenge of integrating technology into mathematics instruction. This article examines theory, standards, guidelines, and rationale that supports technology in the preschool environment. Examining practices at 12 diverse preschool sites, four designs emerge as the “typical” models that enable early learners to engage and experience technology within a developmentally appropriate learning environment. The designs outlined are viewed through the lens of preschool mathematics instruction and provide early learning educators as well as parents with models for replication.     

流媒体镜像节点库选择机制的研究与实现

提出了采用了镜像流媒体节点库的方法解决流媒体课件占用较大的网络带宽,防止网络拥塞问题的解决方案,并在开发“辽宁省保险中介从业人员继续教育培训网”（http：//www.sytvujjy.cn/bx/）过程中得以实现。同时开发了基于网络带宽测试的客户端选择机制、基于网络流量／服务器CPU占用率的服务器端选择机制、基于IP的服务器端选择机制三种镜像流媒体节点库技术手段,取得了良好的使用效果,也为远程教育节点库的扩展应用提供了一些经验和借鉴。     

Child AD/HD severity and psychological functioning in relation to divorce,remarriage, multiple transitions and the quality of family relationships

Both Attention-Deficit/Hyperactivity Disorder (AD/HD) and divorce are very prevalent in western societies, and they may occur together. AD/HD is generally viewed as a neurobiological disorder, which has led to a commonly held belief that social-environmental factors play little role in the symptom profile of children diagnosed with the disorder. This study investigated the association between parental divorce, remarriage, multiple transitions, the quality of relationships with family members and the psychological well-being of children and adolescents with AD/HD. First, differences in children’s AD/HD symptom profiles in relation to parents’ divorce status (single/multiple divorce) and family composition (single parent/stepfamily) were examined. Second, the association between the quality of children’s relationships with each family member and parents’ marital status (divorced/non-divorced) and family composition was investigated. In addition, age, gender and AD/HD subtype differences were assessed. Third, the association between the quality of children’s interactions with family members and children’s AD/HD symptom profile was explored. No significant differences in children’s behavioural profiles were found in terms of parents’ divorce status. Living in stepfamilies was associated with greater AD/HD severity and social malfunctioning. Disruptive parent–child and sibling relationships were found to be related to children’s age, gender, AD/HD subtype and parents’ marital status. Further, poor interactions with family members correlated with children’s AD/HD severity and psychological well-being. In summary, divorce, remarriage and the quality of relationships with family members are important correlates of the symptom profile of children with AD/HD, and this emphasises the need for special treatment modules for these families.     

用Maintop编制透镜成像多媒体课件

多媒体课件制作是现代教育技术的典型应用。本阐述了利用Maintop多媒体课件制作平台软件，制作透镜成像多媒体课件的过程。