多模态化妆品广告语篇人际意义和互动意义的构建

以系统功能语法和在此基础上发展起来的视觉图像分析语法为理论框架,以英国畅销杂志Housekeeping的15篇化妆品广告为语料,通过量化和描述的研究方法,探讨了多模态化妆品广告中文本和图像如何实现人际意义和互动意义的构建。     

TangiWheel: A Widget for Manipulating Collections on Tabletop Displays Supporting Hybrid Input Modality

In this paper we present TangiWheel,a collection manipulation widget for tabletop displays.Our implementation is flexible,allowing either multi-touch or interaction,or even a hybrid scheme to better suit user choice and convenience.Different TangiWheel aspects and features are compared with other existing widgets for collection manipulation.The study reveals that TangiWheel is the first proposal to support a hybrid input modality with large resemblance levels between touch and tangible interaction styles.Several experiments were conducted to evaluate the techniques used in each input scheme for a better understanding of tangible surface interfaces in complex tasks performed by a single user (e.g.,involving a typical master-slave exploration pattern).The results show that tangibles perform significantly better than fingers,despite dealing with a greater number of interactions,in situations that require a large number of acquisitions and basic manipulation tasks such as establishing location and orientation.However,when users have to perform multiple exploration and selection operations that do not require previous basic manipulation tasks,for instance when collections are fixed in the interface layout,touch input is significantly better in terms of required time and number of actions.Finally,when a more elastic collection layout or more complex additional insertion or displacement operations are needed,the hybrid and tangible approaches clearly outperform finger-based interactions.     

CAPTCHA技术研究综述

全自动开放式人机区分图灵测试(completely automated public Turing test to tell computers and humans apart,CAPTCHA)又称为人机交互验证(human interactive proof,HIP),它能自动产生并评估一个测试,这个测试能被几乎所有人类用户通过,而现有的计算机程序不能通过.CAPTCHA提供了一种自动驱分人和机器的手段,已成为一种标准的网络安全技术成功应用于包括Google,Yahoo!以及微软在内的各大网站.CAPTCHA设计基于人工智能领域的开放性问题,按表现载体和内容不同分为文本、图像、声音3种类型,其中,基于字符识别的文本CAPTCHA已得到广泛使用;图像CAPTCHA利用计算机视觉中的难解问题,目前尚处于研究阶段;声音CAPTCHA针对视觉残障者,是对前两种视觉CAPTCHA的补充.介绍了CAPTCHA的发展和设计准则,详细阐述CAPTCHA设计和破解的研究工作及最新进展,给出典型实例,讨论其可用性和安全性,最后指出未来CAPTCHA技术的发展方向和亟待解决的问题.     

基于账户模式的电视支付平台

分析目前的电视支付业务方式,针对下一代广播电视网(NGB)环境提出一种基于实名制账户的电视支付平台。介绍其地址总体技术架构、用户认证技术及关键流程,对平台的特点进行分析,证明其具有安全性、可靠性和完整性。该电视支付平台已在上海NGB网络中正式运营,实际运行效果良好。     

跨协议分布式交互仿真互连技术研究

使高层体系结构（high level architecture, HLA）和分布交互仿真（distributed interactive simulation, DIS）互连以实现跨协议分布式交互仿真,具有较大的现实意义,其关键是HLA仿真系统和DIS仿真系统之间的互操作问题.提出了基于Socket的跨协议分布式交互仿真方法的原理和实现,并给出了2种跨协议分布式交互仿真系统的时间管理机制.实践证明,该方法是可行的,基于它所开发的协议转换部件,在实际应用中取得了良好的运行效果.     

UPS的性能分类与标准化UPS系统结构

IEC62040—3提出了UPS按性能分类的方法,其目的是使用户可以在相同的基础上,对不同厂家生产的功率相近的UPS产品进行比较。UPS厂家应按IEC62040—3规定对其产品进行性能分类代码的标识;用户应选用已标识性能分类代码的UPS产品。本文阐述了IEC62040—3规定的UPS性能分类方法和标准化的UPS系统结构,并介绍高可用度的并联冗余UPS和分布冗余UPS系统。     

室内设计快速表现与思维方法

设计师的思维方法是贯穿于设计的整个过程中的,我们应该重视设计表现与设计思维的互动性,即强调设计思维由概念产生到设计结果之间采用层层递进的方式,图像表现的多样性就在设计构思递进的过程中体现出来.     

基于CT序列图像的活体距骨分割及三维重建

了解距骨的解剖结构及空间关系,可为对其进行非侵入式运动学研究打下基础,对后足的疾病诊断具有重要意义。本文基于活体后足的CT序列图像,采用阈值、数学形态学和交互式操作相结合的手段从图像中分割出距骨,并用体绘制方法对距骨进行三维重建。实验表明,本文提出的分割方法简单且自动化程度较高。     

Isothermal and Dynamic Microcalorimetry for Quantifying the Crystallization of an Amorphous Drug during Interactive Powder Mixing

This study reports the crystallization of amorphous nifedipine during an interactive mixing process quantified by using isothermal and dynamic microcalorimetry. Interactive mixtures of amorphous nifedipine and uniform glass beads were prepared by mixing in a Turbula® mixer. The difference in the extent of crystallization of amorphous nifedipine during mixing was characterized by the time it took for the crystallization of a known amount of amorphous nifedipine in isothermal calorimetry and the change in the height of the crystallization peak at 65°C in dynamic calorimetry. It was found that both isothermal and dynamic microcalorimetry are useful techniques for quantifying the physical transition of amorphous nifedipine during interactive mixing. The rate and extent of crystallization of amorphous nifedipine depended on both mixing time and speed, but mixing time played a more dominant role because the transformation of amorphous to crystalline nifedipine was greater after 3180 revolutions (9.7%) than after 405 revolutions (0.9%) at 27 rpm. The same trend was observed at 109 rpm, but the percentage of crystalline nifedipine after 3180 revolutions was only 5.2%. This meant that an increase in mixing time rather than speed increased the rate of amorphous to crystalline transformation. The greatest cause for crystal transformation during interactive mixing was the presence of crystal seeds of the thermodynamically stable nifedipine Modification I because the amount of amorphous to crystalline transformation increased from 2.6% for a completely amorphous mixture to 6.6% for a 92:8 mixture of amorphous and crystalline nifedipine when mixed for 30 minutes at 106 rpm.     

溶碱萃取剂对乙醇-水体系汽液平衡的影响

提出了溶碱萃取精馏制取无水乙醇的方法．通过恒沸点相对挥发度的测定与全浓度下的汽液平衡测定，考察了溶碱萃取剂对乙醇一水体系汽液平衡的影响．采用LIQUAC模型与Wilson模型相结合的关联计算方法，进行了汽液平衡数据的预测与萃取精馏工艺条件的模拟．结果表明，与传统的溶盐萃取剂相比，溶碱萃取剂可以更好地提高乙醇-水体系的分离效果．