影响高校教师授课传播效果的教师个人因素分析

教师课堂授课是一种信息传播行为,影响传播效果的教师是个人因素(PersonalFactors)主要包含视觉因素(VisualFactors)、行为因素(BehavioraFactors)、理念因素(MindFactors)三个方面。高校教师只有充分将三者有机结合在一起,才能使授课达到最佳效果。     

虚拟制造技术及其在制造业中的应用

从虚拟制造的形成背景,介绍了虚拟制造的特点、分类;并对虚拟制造的核心技术及理论体系等多方面进行详细阐述。最后就虚拟制造的应用和虚拟制造技术的发展潜力和国内外现状进行系统介绍。     

DVI接口技术在数字电视中的应用研究

本文通过对DVI通信协议,TMDS的链路构成、信号特性、编码及解码算法分析.提出针对数字电视中的实际应用方案,简化了数字→模拟→数字繁琐的转换过程,解决了模拟传输环节中难以抑制的噪声干扰问题,有效避免了信号的损失和受到的干扰.有效消除拖影现象,使图像的清晰度和细节表现力都得到了大大提高,电视画面色彩更纯净,更逼真.     

原发性开角型青光眼黄斑区视网膜内层结构和功能的关系

目的:探讨原发性开角型青光眼(POAG)患者黄斑区视网膜内层结构和功能的关系。创新点:POAG的潜在原因是视网膜神经节细胞(RGC)的丢失。虽然在传统上我们可以通过测量视网膜后极部约30°的结构和功能来评估青光眼性视神经损害,但是50%的RGC存在于黄斑区4.5 mm范围内。本研究关注黄斑区约10°范围视网膜结构和功能的关系,有助于更早地监测到青光眼性视神经损害。方法:本研究纳入了78例POAG患者及58例健康对照者,其中POAG分为早期青光眼(EG)和中晚期青光眼(AG)。所有受试者均进行了以下检测:分离格栅视觉诱发电位(icVEP)、标准自动视野计(SAP)及光学相干断层扫描(OCT)。icVEP检测时给予8%、14%、22%及32%对比度刺激,采集相应的信躁比(SNR)。黄斑区视野敏感度(mMS)通过计算黄斑中心12点的敏感度平均值获得。OCT扫描包括视网膜神经节细胞层+内丛状层的平均厚度(GCL+IPLT)及视盘周围神经纤维层平均厚度(pRNFLT)。我们比较了各组间SNR、mMS、GCL+IPLT及pRNFLT值,并分析了结构性指标和功能性指标之间的相关性。结论:POAG组患者的SNR、mMS、GCL+IPLT及pRNFLT均较正常对照组显著下降(所有P值<0.001)。在早期青光眼中,SNR及mMS均与视网膜内层厚度呈中度相关;而在中晚期青光眼中,mMS与视网膜内层厚度呈高度相关。     

Visual System Simulator平台下锁相环综合分析与仿真

给出了基于VSS平台的锁相环仿真过程,并将其引入课堂教学和实验。同时给出了锁相环的仿真模型,构建了完整的锁相环系统,并给出了仿真波形与环路滤波器设计方法。实践证明,采用这种方式可以帮助学生对相关内容的理解,并为今后进行系统设计工作打下良好的基础。     

基于软件的PLC虚拟实验系统的实现

针对PLC课程实验,开发了一种基于软件的PLC虚拟实验系统,满足了PLC课程实验的要求。介绍了PLC虚拟实验系统的原理,以电机顺序起动为例叙述了虚拟实验系统的实现过程,最后简单介绍了PLC虚拟实验系统的使用方法。     

一种基于关系视频盲水印算法

针对视频水印的特征,提出一种利用视频帧采样点均值曲线相交性确定嵌入帧的方法：在水印信息嵌入时,利用嵌入帧三个亮度最大分块位置关系和DC值大小实现每帧2bit信息的嵌入。实验证明,该算法对常规攻击具有良好的鲁棒性。     

Bender‐Gestalt II differential item functioning across Caucasian and African American examinees

Performance on figure copying tasks is empirically linked to the school readiness, learning, cognition, and neuropsychological functioning. These nonverbal tasks are frequently used to evaluate children from diverse backgrounds to minimize bias due to factors such as language, ethnicity, culture, or socioeconomic status on test performance. The current study examined the possible Differential Item Functioning across African American and Caucasian groups, ages 4 to 7 years, in Bender Motor Gestalt Test, Second Edition (BG‐II) visual‐motor scores. Results indicated that in general the BG‐II can be considered invariant across these ethnic groups in this age range.     

OpenVPN技术在远程安全访问图书馆信息资源中的应用

通过介绍OpenVPN技术特点,结合图书馆的实际需要,详细描述如何在LINUX系统中利用Op-enVPN技术来构建远程安全访问VPN服务器,解决校外用户无法使用图书馆信息资源的问题.     

Film choices for screening literacy: the ‘Pygmalion template’ in the curriculum as contact zone

This study discusses the representation of (the) literacy (myth) in popular movies and a teaching and research project on cinematic literacy narratives. It attempts to reveal the existence of a powerful ‘Pygmalion template’ in contemporary movie culture. Focusing on a discourse or culture clash ‘Pygmalion movies’ simultaneously contribute to the discursive construction and deconstruction of the literacy myth. Because of their polysemic character, these films offer fertile grounds for inquiring into the problematic nature of literacy acquisition and discourse or culture clashes. Inviting pre‐service teachers to reflect on these issues, the authors created a curriculum as contact zone in which films are used as a primary source of knowledge and insight together with students’ movie analyses and interpretations, personal narratives, and theoretical readings. This exploratory study of on‐line discussion groups revealed the students’ contradictory and competing movie readings. Organizing the curriculum as a contact zone deepened the students’ and one’s own understanding of literacy as an ideological site of struggle in (movie) culture.     

一次雪后跑道视程(RVR)数值偏低原因分析

自动气象观测系统是专门用于民航机场气象部门进行气象数据的自动采集、计算处理和存储的设备,可以自动连续测量跑道视程、风向、风速、温度、湿度、气压、降水等气象要素。通过青岛流亭机场在一次大雪过后自动气象观测系统测量的跑道视程数值偏低的原因查找和修正过程,希望能够对其他机场遇到雨、雪等特殊天气及数据异常时的自动气象观测系统维护、维修工作提供借鉴。     

我院电化教育改革与发展的思考

本文从我院电化教育目前存在的问题和人们对电化教育功能的单一性认识出发 ,阐述了新形势下电化教育的职能和教育教学中的地位和作用     

How Useful is Braille Music?: A Critical Review

This article discusses the usefulness of Braille music as a mediational means for musicians with visual impairment (MVI). Specifically, three broad issues are the focus of this study: (1) three notions as the conceptual frameworks, namely, mediation, appropriation and mastery; (2) three criteria of the usefulness of Braille music, including adaptability, learnability and availability; and (3) three alternative channels to Braille music: auditory input, haptic sense and technical devices. Based on this structure, the author interviewed nine music teachers and seven students with visual impairment at a specialised school for the blind in Korea. The major findings of this research are as follows. Firstly, Braille music alone cannot be a sufficient tool for practice, and the combination of alternative tools is expected. Secondly, the current level of development, diffusion and employment of Braille music in Korea is not satisfactory. Thirdly and finally, more effort should be invested to make Braille music more adapted to the needs and conditions of MVI, more appropriate to learn and utilise, and more available to be accustomed to.     

Science Letters：Visual odometry for road vehicles —— feasibility analysis

Estimating the global position of a road vehicle without using GPS is a challenge that many scientists look forward to solving in the near future. Normally, inertial and odometry sensors are used to complement GPS measures in an attempt to provide a means for maintaining vehicle odometry during GPS outage. Nonetheless, recent experiments have demonstrated that computer vision can also be used as a valuable source to provide what can be denoted as visual odometry. For this purpose, vehicle motion can be estimated using a non-linear, photogrametric approach based on RAndom SAmple Consensus (RANSAC). The results prove that the detection and selection of relevant feature points is a crucial factor in the global performance of the visual odometry algorithm. The key issues for further improvement are discussed in this letter.     

一种新的半易损认证数字水印技术

In this paper we propse a semi-fragile watermarking scheme,which can be used for image authentication.Let the original image be performed by l-level discrete wavelet transformation.An approximate wavelet coefficient matrix of the original image and real-value chaotic sequences are than used to generate the content-based and secure watermark.The watermark is embedded into original image by using by using HVS.The tamper detection can idantify the tampered region of the received watermarked image,Experimental results are given.     

Perceptual Literacy and the Construction of Significant Meanings within Art Education

In order to verify how important the ability to process visual images and sounds in a holistic way can be, we developed an experiment based on the production and reception of an art work that was conceived as a multi‐sensorial experience and implied a complex understanding of visual and auditory information. We departed from the idea that to foster processes that encourage constructions of significant meanings it is necessary to abandon vision/audio‐centric notions of objecthood and offer a general definition of the perceptual object. The test was realised between the participants after modifying the performance conditions: some could not see the visuals, some could not hear the sound and others could appreciate the performance as a whole. Considering the results, we could infer that only the possibility to ‘read’ the performance as a whole encouraged construction of significant meanings. It would be possible to upgrade the approach, turning visual literacy into perceptual literacy, to contextualise artistic production that stimulates hybrid sensitive experiences. The education of critical perceivers should also enable transformations in responses to different stimuli. This is important if we consider the individuality of each student, his or her needs, affinities, cultural background, gender and so on.     

上博竹书(三)《周易》“亡忘又疾,勿药又菜”试析

对《上海博物馆藏战国楚竹书》(三)《周易》简21“亡忘又疾,勿药又菜”这句话的理解,目前学术界有多种意见,我们通过与传世本对照,认为此句的“忘”通“妄”,作“妄为”解;“菜”通“喜”,作“病愈”解。此句意为“不妄为却偶染微疾,无需用药将自愈”。     

视觉素养的哲学文化根基

视觉素养的研究和实践在国际上已有很大发展,但国内尚没有得到足够的重视。视觉素养的营建不仅是视觉能力的培养,更在于其根基和归趋的奠定、视觉思维结构的和谐及视觉性的内置,在于本民族传统文化精神的滋养和浸润。此种哲学维度的省思和文化血脉的根植,使人们在视觉文化的生存中、在视觉素养的建构中获得性灵的提升及生命的意义呈现。     

API函数在VB中的应用示例

醉介绍了利用Visual Basic调用Windows API函数的方法，并通过举例介绍部分API函数的功能。     

伽达默尔哲学的七个关键术语

"存在之显现" 是伽达默尔的真理观念."时间性"指的是通过语言性、书写性、和诗歌的奇迹,产生了文本战胜历史"时间"而具有"同时性" 的奇迹."实践智慧" 是伦理方式选择善的理智."应用"的意思是当我们理解过去的某件事物时,我们同样领会它在今天是如何应用的 "传统"是指我们在语言中继承下来的态度和方法,在我们试图弄懂任何事物时都会在我们的意识中发生作用,而"效果历史意识" 是一种历史总结在发挥作用的意识.语言最典型地生存于交谈、问答、对话的平等交换之中.使人类团结在一起的的节日庆典是真正交流的基础.