A Study of Electromyogram Based on Human-Computer Interface

In this paper, a new control system based on forearm electromyogram （EMG） is proposed for computer peripheral control and artificial prosthesis control. This control system intends to realize the commands of six pre-defined hand poses： up, down, left, right, yes, and no. In order to research the possibility of using a unified amplifier for both electroencephalogram （EEG） and EMG, the surface forearm EMG data is acquired by a 4-channel EEG measurement system. The Bayesian classifier is used to classify the power spectral density （PSD） of the signal. The experiment result verifies that this control system can supply a high command recognition rate （average 48%） even the EMG data is collected with an EEG system just with single electrode measurement.

Designing interactive glazing through an engineering psychology approach:Six augmented reality scenarios that envision future car human-machine interface

Background With an increasing number of vehicles becoming autonomous,intelligent,and connected,paying attention to the future usage of car human-machine interface with these vehicles should become more relevant.Several studies have addressed car HMI but were less attentive to designing and implementing interactive glazing for every day(autonomous)driving contexts.Methods Reflecting on the literature,we describe an engineering psychology practice and the design of six novel future user scenarios,which envision the application of a specific set of augmented reality(AR)support user interactions.Additionally,we conduct evaluations on specific scenarios and experiential prototypes,which reveal that these AR scenarios aid the target user groups in experiencing a new type of interaction.The overall evaluation is positive with valuable assessment results and suggestions.Conclusions This study can interest applied psychology educators who aspire to teach how AR can be operationalized in a human-centered design process to students with minimal pre-existing expertise or minimal scientific knowledge in engineering psychology.

Development of a human computer Interface system using EOG

Bio-based human computer interface (HCI) has attracted more and more attention of researches all over the world in recent years. In this paper, a HCI system which based on electrooculogram (EOG) is proposed. It transforms electrical po-tentials recorded by horizontal and vertical EOG into a computer in order to control external equipment. The system consists of EOG acqui-sition unit, EOG pattern recognition part and control command output unit. Three plane elec-trodes are employed to detect EOG signals, which contain the information related to the eye blinking and vertical (or horizontal) eye move-ments referred to pre-designed command table. An online signal processing algorithm is de-signed to get the command information con-tained in EOG signals, and these commands could be used to control the computer or other instruments. Based on this HCI system, the remote control experiments driven by EOG are realized.

Information visualization,physicality and intuitive use for tangible user interfaces

In the last two decades, tangible user interfaces （TUIs） have emerged as a new interface type that interlinks the digital and physical worlds. TUIs show a potential to enhance the way in which people interact with digital information. First, this paper exam- ines the existing body of work on tangible user interfaces and discusses their application domains, especially information visualiza- tion. Then it provides a definition of intuitive use and reviews formerly separated ideas on physicality. As interaction has an impact on the overall product experience, we also discuss whether intuitive use influences the users＇ aesthetic judgements of such products.

Navigation in virtual and real environment using brain computer interface:a progress report

A brain-computer interface (BCI) facilitates bypassing the peripheral nervous system and directly communicating with surrounding devices. Navigation technology using BCI has developed-from exploring the prototype paradigm in the virtual environment (VE) to accurately completing the locomotion intention of the operator in the form of a powered wheelchair or mobile robot in a real environment. This paper summarizes BCI navigation applications that have been used in both real and VEs in the past 20 years. Horizontal comparisons were conducted between various paradigms applied to BCI and their unique signal-processing methods. Owing to the shift in the control mode from synchronous to asynchronous, the development trend of navigation applications in the VE was also reviewed. The contrast between high level commands and low-level commands is introduced as the main line to review the two major applications of BCI navigation in real environments: mobile robots and unmanned aerial vehicles (UAVs). Finally, applications of BCI navigation to scenarios outside the laboratory;research challenges, including human factors in navigation application interaction design;and the feasibility of hybrid BCI for BCI navigation are discussed in detail.

IUID Method-Mix: Towards a Systematic Approach for Intercultural User Interface Design (IUID)

A method-mix for intercultural user interface design (IUID) is explained and exemplified by application examples based on a hybrid approach covering cultural contexts in human-computer interaction (HCI) design using a model of culturally influenced HCI. Cultural influence on HCI is described using cultural variables for user interface design. Assumptions and empirical results regarding the influence of culture on HCI, considering the path of the information processing and the interaction style between Chinese and German users are explained based on cultural models. Subsequent indicators represent the relationship between culture and HCI (culturally imprinted by the user). Correlations adopted theoretically between cultural dimensions and variables for HCI design were investigated. These correlations represent relevant constituents of a model for culturally influenced HCI. Considerations applying this model and evidence for the proper application of the IUID method-mix are presented elucidating why and how cultural aspects play a role in HCI design and usability/UX engineering. The IUID method-mix serves to inspire HCI engineers in the requirement analysis phase as well as HCI designers in the design phase. The readers are thereby sensitized to the challenges of intercultural usability/UX engineering and intercultural HCI design and will be equipped with methodological knowledge relevant to the derivation of design recommendations for user interface design for and in their desired cultural contexts. Finally, implications for practitioners are shown, including HCI style scores and practical design recommendations, to prognosticate the effort and the expenditures for considering the cultural context in IUID.

基于HCI超融合技术的异构气象资源池接口适配方法研究

云资源池因具备资源利用率高、业务扩展便捷、安全可靠性高等优势,已逐渐替代传统物理架构得到广泛应用。但由于云资源平台供应商采取不同的异构虚拟化技术,导致用户购置不同类型的云资源平台因兼容性问题而无法统一纳管,不仅造成资源浪费,也提高了用户的运维成本。通过研究异构资源池接口适配问题,从而实现资源整合,可解决用户资源集约管理短板,提升云资源池使用质效。

蓝牙HCI-UART与并口的FPGA控制接口设计

某应用蓝牙技术的医疗监控系统中,单片机是其数据传输瓶颈。本设计采用FPGA取代了原系统的单片机和8255芯片,使数据传输速率提高了近10倍。文中讨论了设计的一些关键问题。

人机交互嵌入式图形用户界面视觉增强方法研究

人机交互嵌入式图形用户界面容易受到噪声影响,且受传输带宽的限制,处理图像较为复杂,导致视觉增强效果不佳。为此,提出人机交互嵌入式图形用户界面视觉增强方法。利用傅里叶变换方法处理人机交互嵌入式图形用户界面,获得边缘像素集,融合区域特征,分层提取用户界面。采用均值滤波处理方法分析透射率,去模糊处理用户模糊界面。基于此,利用Retinex和小波变换图像增强方法获取去模糊后的视觉图像饱和度,计算亮度分量,增强处理去模糊处理后的视觉图像。由实验结果可知,该方法能够获取清晰用户界面,且噪声振幅在-1.5~0.8 dB范围内波动,说明使用该技术抑噪效果最好。

深亚微米pMOS器件的HCI和NBTI耦合效应与物理机制

研究了深亚微米pMOS器件的热载流子注入(hot-carrier injection,HCI)和负偏压温度不稳定效应(negative bias temperature instability,NBTI)的耦合效应和物理机制.器件在室温下的损伤特性由HCI效应来控制.高温条件下,器件受到HCI和NBTI效应的共同作用,二者的混合效应表现为NBTI不断增强的HCI效应.在HCI条件下器件的阈值电压漂移依赖沟道长度,而NBTI效应中器件的阈值电压漂移与沟道长度无关,给出了分解HCI和NBTI耦合效应的方法.

HCI在个性化数字图书馆界面设计中的应用

用户界面的友好性对于数字图书馆的服务质量有着重要的影响作用。以一个个性化数字图书馆界面的设计为例,分析如何把 Human-Computer Interaction(HCI)的概念和技术应用于数字图书馆界面的设计中。介绍了相关研究背景、设计原则、用户与任务分析以及系统设计模型。

BlueCore2型模块及其HCI传输驱动的实现

BlueCore2-external是英国CSR公司生产的蓝牙收发电路。具有功耗低、外围器件少等特点,广泛应用在笔记本电脑、蓝牙手机和个人数字助理(PDA)等产品中。文中着重介绍BlueCore2的特点及其在计算机中的应用并给出软件流程。

Risk identification and safety assessment of human-computer interaction in integrated avionics based on STAMP

To solve the problem of risk identification and quantitative assessment for human-computer interaction(HCI)in complex avionics systems,an HCI safety analysis framework based on system-theoretical process analysis(STPA)and cognitive reliability and error analysis method(CREAM)is proposed.STPACREAM can identify unsafe control actions and find the causal path during the interaction of avionics systems and pilot with the help of formal verification tools automatically.The common performance conditions(CPC)of avionics systems in the aviation environment is established and a quantitative analysis of human failure is carried out.Taking the head-up display(HUD)system interaction process as an example,a case analysis is carried out,the layered safety control structure and formal model of the HUD interaction process are established.For the interactive behavior“Pilots approaching with HUD”,four unsafe control actions and35 causal scenarios are identified and the impact of common performance conditions at different levels on the pilot decision model are analyzed.The results show that HUD's HCI level gradually improves as the scores of CPC increase,and the quality of crew member cooperation and time sufficiency of the task is the key to its HCI.Through case analysis,it is shown that STPACREAM can quantitatively assess the hazards in HCI and identify the key factors that impact safety.

基于USB传输层的蓝牙主机控制器接口(HCI)的实现

探讨了蓝牙通信的最基本也是最重要的方面 ,即蓝牙主机控制器接口基于 USB传输层的通信 ,详细介绍了 HCI分组的类型 ,以及每种分组类型的数据格式 ,阐述了蓝牙设备间连接和通信的相关步骤和原理 ,给出了软件流程图和代码。

蓝牙模块串口通信的设计与实现

蓝牙技术是一种适用于近距离的无线通信技术,具有安全性高和受干扰性小的特点。通过单片机对蓝牙模块进行开发,建立蓝牙模块与蓝牙手机之间的通信,实现蓝牙手机对单片机和蓝牙模块系统的控制。同时,蓝牙模块具有与特定蓝牙设备绑定的功能,将其运用在嵌入式安全系统中,可大大提高系统的安全性和稳定性。

一种模型驱动的交互式信息可视化开发方法

设计与实现面向领域应用的交互式信息可视化软件十分困难.缺乏统一的开发方法与支撑工具箱,为非专家用户提供对层次、网络、多维等数据类型的统一支持,对各种可视化技术与交互技术的统一支持,以及对信息可视化任务的统一支持针对此问题,提出了一种模型驱动的交互式信息可视化开发方法Daisy.首先,提出了交互式信息可视化界面模型IIVM(interactive information visualization interface model);然后,提出了基于IIVM的交互式信息可视化开发方法Daisy,讨论了该方法的两个核心技术:IIVM建模与描述文件生成方法、系统自动生成方法.同时。给出了Daisy工具箱,包括Daisy建模工具、Daisy系统自动生成工具以及运行时框架与组件库.最后,给出了该开发方法与工具箱的应用实例.实例表明,该方法能够为交互式信息可视化开发的统一支撑方法问题提供一种有效的解决方案.

面向海量层次信息可视化的嵌套圆鱼眼视图

针对海量层次信息可视化问题,提出嵌套圆鱼眼视图及实现方法.首先分析了相关工作;然后构造了针对同层兄弟节点的变形函数,给出了针对焦点节点同层兄弟节点的外切圆变形排列算法、变形后节点的子节点的嵌套圆递归排列算法及将二维鱼眼视图映射为三维鱼眼视图的方法;最后将该方法应用于计算机文件系统可视化.实验结果表明:该方法在相对小的显示空间内,既能显示海量信息的整体视图,又能突出局部焦点细节信息,具有较高的任务完成效率与用户满意度.

基于视觉的互动游戏手势界面工具箱

分析了视觉手势的交互特征,提出了非接触型设备交互模型,基于数据流图方法建立了支持连续信息输入的数据流模型来描述视觉手势信息的处理流程,基于"paint-view-correct"隐喻构建了手势界面开发工具IEToolkit.系统的主要特点包括:使用插件设计思想提供了可扩展的接口,方便开发人员对系统进行扩展;实现了对平台内部多个分类器的统一管理,方便用户对这些分类器进行动态配置;提供了可视化的用户界面,用户能够根据不同的应用灵活地定义高层的手势交互语义;屏蔽了图像处理、机器学习等底层的技术细节,降低了界面开发难度.最后介绍了基于IEToolkit的软件系统开发方法与应用实例.实例表明,该界面工具能够为基于视觉手势的互动游戏的设计开发提供统一的平台和有效的解决方案.

计算机支持的智能草图技术研究及实现

首先论述了作为CAD技术当前研究前沿的计算机支持的智能草图技术研究现状。构建出智能草图的技术体系,包括基于单笔划的自然手势界面,徒手草图输入,草图识别与基于草图的几何建模。最后给出基于著名几何造型核心ACIS开发的智能草图工具原型系统ISID,它具有一个支持笔输入的用户界面,并能和典型的CAD系统实现集成。初步应用证明该系统具有很强的实用性和可扩展性。

远程教育中以学习者为主体的个性化人机交互系统研究

该文从学习者个性化角度探讨远程教育中的人机交互问题,通过对远程教育中的人机交互理论、人机交互系统的特点进行分析,初步设计了一个以学习者为中心的交互系统模型,最后提出实现个性化人机交互的关键技术。