Collaboration among mobile agents for efficient energy allocation in mobile grid

The use of mobile devices in grid environments may have two interaction aspects: devices are considered as users of grid resources or as grid resources providers. Due to the limitation constraints on energy and processing capacity of mobile devices, their integration into the Grid is difficult. In this paper, we investigate the cooperation among mobile devices to balance the energy consumption and computation workloads. Mobile devices can have different roles such as buyer devices and seller devices. In the mobile grid, the energies of mobile devices are uneven, energy-poor devices can exploit other devices with spare energy. Our model consists of two actors: A buyer device agent represents the benefits of mobile buyer device that intends to purchase energy from other devices. A seller device agent represents the profits of mobile seller device that is willing to sell spare energy to other devices. The objective of optimal energy allocation in mobile grid is to maximize the utility of the system without exceeding the energy capacity, expense budget and the deadline. A collaboration algorithm among mobile agents for efficient energy allocation is proposed. In the simulation, the performance evaluation of collaboration algorithm among mobile agents is conducted.     

基于Web的嵌入式设备监控模型的设计与实现

研究并实现了一种基于Web技术的嵌入式没备监控模型,使管理者可以通过Internet利用Web浏览器完成对现场设备的远程访问、监控和维护等操作,实现了异构设备之间的跨平台互访。对TCP／IP协议进行约简,实现了一个thin TCP／IP协议栈,为嵌入式设备提供了网络接口,实现了与Internet的无缝连接。嵌入式没备网关将TCP／IP协议与嵌入式设备监控协议之间的格式进行转换,实现了远程用户对现场设备的透明访问,具有智能化和远程管理的特点。通过对该模型性能的测试,结果表明基于Web的远程监控方式可以满足监控任务的需要,而且能有效降低监控运行维护成本、提高运行维护效率,具有实际应用价值。     

超低频水下遥控系统设计

针对水下设备在布防后难以控制的问题,提出了利用超低频电磁波实现对水下设备的远程遥控。在分析了超低频电磁波传播特性的基础上,提出采用超导量子干涉器(SQUID)作为超低频遥控信号的接收装置,对水下超低频接收系统进行了设计,并给出了接收机的软、硬件实现方案。     

可穿戴设备拥有者转换协议的设计

近年来,可穿戴设备作为一类新型的智能设备正在改变着人们的生活方式。当这类设备处在多用户环境下时,应该考虑拥有者转换这一场景。为了解决可穿戴设备在拥有者转换场景下面临的安全隐私问题,设计了一个安全的可穿戴设备拥有者转换协议。该协议包括初始化、相互认证和密钥更新3个阶段。安全性分析表明本协议能够抵御传统的信道攻击和拥有者转换场景下的特殊攻击。实验分析表明所提方案具有较高的效率,能够适用于可穿戴设备环境。     

LON Works现场总线与模拟设备接口电路设计

现场总线使现场的控制设备有了通信能力。为了使传统控制系统中的模拟设备与现场总线控制系统相结合，将非现场总线设备集成到现场总线系统中，设计了LON Works现场总线与模拟设备接口电路，实现了基于现场总线的控制系统。     

一种基于Web的嵌入式设备网络管理的设计

随着Web和嵌入式系统的发展，许多非Internet的嵌入式设备联入了互联网，人们希望可以对这些设备能够进行管理和控制。该文针对嵌入式设备提出了一种基于Web的嵌入式设备的网络管理模型。通过把Web集成到嵌入式设备中，可以随时随地对设备进行远程访问及管理，利用该模型可以真正实现非Internet设备的网络化以及对Internet的透明网络互联。     

Design and verification of protected systems with integrated devices based on expert knowledge

The approach to identifying expert knowledge in the field of the information security of integrated devices for their further use by the developers of integrated devices, including as the input data of integrated devices in the design and verification of integrated devices is offered.     

轨道车辆新型组合结构吸能装置耐碰撞性分析

为保证列车碰撞时车体次要部位或附加装置尽可能多地吸收撞击能量,减少财产损失和人员伤亡,提出组合结构吸能装置的设计思想.根据耐撞性车体吸能装置设计原理,设计出不同截面形状管的组合结构吸能装置.利用ANSYS/LS-DYNA对其分别进行动态仿真,研究其吸能特性,并取其最优方案与试验结果进行对比,从而验证仿真模型的正确性.通过对原始设计方案外箱板的截面形状和吸能管的端部结构加以改进,设计出两种新型的组合结构吸能装置.仿真分析结果表明,结构的截面形状对整个装置的吸能特性有较大影响,改变结构的截面形状可以有效调节碰撞界面力峰值和均值载荷,改进后的吸能装置耐撞性综合指标更优。     

力／触觉再现设备的研究现状与应用

力/触觉再现技术作为一种新兴的人机交互模式在虚拟现实系统得到较多应用。力/触觉再现设备是力/触觉再现系统实现过程中必不可少的环节,受到广泛的重视和研究。讨论了力/触觉再现设备的种类和特点,分类介绍了国内外力/触觉再现设备的研究现状,并作了分析比较。最后讨论了力/触觉再现设备在不同领域的应用,并探讨了其未来的研究发展趋势。     

Let's talk: anthropomorphization as means to cope with stress of interacting with technical devices

This study is concerned with the anthropomorphization of technical devices and the resulting influence on human-machine interaction; a special focus is on the verbal interaction between human and machine. Questions included: why do people regard technical devices as humans, when do they do so and how do they perceive their own dialogue and other persons' dialogues with technical devices? Correlation coefficients were calculated between the amount of displayed anthropomorphism and subjects' personality structure, fear of technical devices and self-rated technical competency. A subsequent regression analysis revealed that extraversion and gender of the respondents significantly predicted the amount of interaction with technical devices. Regression analysis showed that neuroticism and agreeableness significantly predicted self-rated technical competency. Technical devices that were seen as helpers or friends were generally treated less unfriendly than devices perceived as merely tools. The findings are discussed in the context of emotion and stress at work and the usability of technical devices.     

多种移动终端设备管理模式的研究与实现

随着终端的多样化，先前的管理单一设备的技术暴露出种种弊端，探讨了终端设备的特点和管理的技术．在这技术基础上做了改进，使用XML描述各种终端设备信息和性能指标，改进访问速度和增加索引技术，以Web Service方式实现终端设备管理的服务平台．改进后的设备管理技术具有高效、灵活、可扩展性、可重用性等特点，并且在移动证券服务系统中付之实施，取得了良好的效果。     

磁致伸缩器件及其应用研究

介绍了磁致伸缩材料的最新研究方向 ,阐述了磁致伸缩器件在换能传感、驱动及频率控制等方面的应用及近年来所取得的最新成果 ,分析了磁致伸缩器件与应用在上述领域的压电陶瓷器件相比所具有的优点 ,展望了其未来发展趋势     

Let's talk: anthropomorphization as means to cope with stress of interacting with technical devices

This study is concerned with the anthropomorphization of technical devices and the resulting influence on human-machine interaction; a special focus is on the verbal interaction between human and machine. Questions included: why do people regard technical devices as humans, when do they do so and how do they perceive their own dialogue and other persons' dialogues with technical devices? Correlation coefficients were calculated between the amount of displayed anthropomorphism and subjects' personality structure, fear of technical devices and self-rated technical competency. A subsequent regression analysis revealed that extraversion and gender of the respondents significantly predicted the amount of interaction with technical devices. Regression analysis showed that neuroticism and agreeableness significantly predicted self-rated technical competency. Technical devices that were seen as helpers or friends were generally treated less unfriendly than devices perceived as merely tools. The findings are discussed in the context of emotion and stress at work and the usability of technical devices.     

基于保结构方法的航天器中微电子器件布局优化

航天器中的精密微电子器件布局影响着航天器局部振动特性,反过来,航天器的局部振动影响着精密微电子器件稳定性和精度.基于此,本文对航天器中微电子器件的布局进行了优化,以降低结构局部振动对微电子器件的影响.在每一步优化迭代过程中,微电子器件固定在一薄板上,薄板通过螺钉固接在航天器结构本体上,使用关注系统局部几何性质的保结构分析方法分析该薄板结构的局部振动特性.本文的优化方法和优化结果为航天器中精密微电子器件的布局设计提供参考.     

Development and characterization of micromachined hollow cathode plasma display devices

In this paper, we report the development of hollow cathode micro plasma devices made using micromachining techniques. Compared with larger discharge devices, micromachined discharge devices operate at much higher pressures, up to 1 atm. Linear current-voltage relationships are obtained, potentially simplifying the control electronics for such devices. The size of micromachined discharge units is reduced and the distribution of sizes and light intensity in an array is more uniform relative to previous devices.     

Human factors aspects of pointing as an input technique in interactive computer systems

The use of pointing devices to input to interactive computer systems is increasing. This paper considers the human factors aspects of the use of a range of these devices. A distinction is drawn between direct and indirect devices. A number of aspects of pointing responses are discussed with reference to the experimental evidence: that pointing is non-linguistic, serial, involves gross motor movement and relies on visual feedback. The overall speed and the extent to which it is a natural form of response are also discussed. The paper ends with some conclusions about the suitability of different devices for different tasks.     

嵌入式设备的网络化方法研究

网络化的嵌入式设备是构建网络控制系统的基础。通过分析嵌入式设备网络化的需求，提出了一种基于Web的网络化设备模型。结合智能型液体泄漏检测仪和水质环境自动监测仪的研制，详细讨论了设备网络化体系结构和网络化平台，并指出嵌入式设备网络化应注意的一些关键问题。     

Edge-to-cloud sensing and actuation semantics in the industrial Internet of Things

There are billions of devices worldwide deployed, connected, and communicating to other systems. Sensors and actuators, which can be stationary or movable devices. These Edge devices are considered part of the Internet of Things (IoT) devices, which can be referred to as a tier of the Computing Continuum paradigm. There are two main concerns at stake in the success of this ecosystem. The interoperability between devices and systems is the first. Mainly, because most of them communicate uniquely and differently from each other, leading to heterogeneous data. The second issue is the lack of decision-making capacity to conduct actuations, such as communicating through different computing tiers based on latency constraints due to a certain measured factor. In this article, we propose an ontology to improve device interoperability in the IoT. In addition, we also explain how to ease data communication between Computing Continuum devices, providing tools to enhance data management and decision-making. A use case is also presented, using the automotive industry, where quickness in maneuver determination is key to avoid accidents. It is exemplified using two Raspberry Pi devices, connected using different networks and choosing the appropriate one depending on context-aware conditions.     

Integration of Multidimensional Interaction Devices in Real-Time Computer Graphics Applications

Modern CAD/CAM and Virtual Reality applications cannot be imagined without the new class of interaction devices allowing the user direct interaction with computer generated scenes. Integrating such devices into existing or newly developed software is a complex task for a number of reasons. The set of devices is very heterogeneous in functionality and data formats. Most devices are difficult to handle by inexperienced users or need careful handling and calibration. After reviewing a number of existing systems, a novel approach to this problem is presented. A device interface that allows the flexible, hardware independent configuration and error robust operation, even reconfiguration and exchanges of interaction devices during operation, will be introduced. The system structure is discussed and novel communication protocols reducing latency are invented.     

Scudware Mobile:支持可穿戴设备协同的移动中间件

最近几年可穿戴设备发展迅速,各种样式和用途的可穿戴设备大量出现。然而这些可穿戴设备大多都是独立工作的,设备与设备之间鲜有联系。为此提出了一个以智能手机为中心的、支持个人范围的和人与人之间的设备的协同模型。基于该模型设计并实现了Scudware Mobile移动中间件,该中间件运行于智能手机上,可以汇聚智能手机和可穿戴设备的数据和服务,且以开放授权机制开放给用户,实现了数据和服务的协同。在Scudware Mobile移动中间件的基础上实现了MobileTrace足迹记录器应用,验证了Scudware Mobile移动中间件的可用性。