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.     

IEEE1394/UPnP软件桥分析及应用

本文介绍了可以连接IEEE1394设备和UPnP设备之间的IEEE1394/UPnP软件桥的结构功能与作用过程。此软件桥可以使UPnP控制点将IEEE1394设备等同于UPnP设备,并能实现IEEE1394传统设备或新型设备与UPnP设备间的数据格式转换和功能转换,并可解决IEEE1394与UPnP设备之间几种不匹配的问题。此文还介绍了一种利用此软件桥连接硬件设备的应用实例。     

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。     

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。     

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.     

行走位置检测装置在济钢料场的应用

原料场大型移动设备都属于长距离有规则运行轨迹的散状物料输送机械,济钢原料场大型移动设备位置检测采用了先进的XTLWXZ-z型位置检测装置,它自身带有地址检测和检测误差消除功能,能准确地输出移动设备行走的绝对地址,并使移动机械行走位置检测长期保持准确.     

基于力反馈的手部康复训练装置研究进展

携带力反馈功能的装置进行训练已经成为手功能康复训练的重要手段.详细介绍了典型的用于手部康复训练的力反馈装置,通过对其优缺点进行比较,发现手部康复训练力反馈装置存在安全性要求高、重量较大、功能比较欠缺和实时性差的问题,并提出了相应的解决思路.最后展望了手部康复训练力反馈装置的发展趋势.     

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。     

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。     

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。     

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.     

Conceivable security risks and authentication techniques for smart devices: A comparative evaluation of security practices

With the rapidly escalating use of smart devices and fraudulent transaction of users data from their devices, efficient and reliable techniques for authentication of the smart devices have become an obligatory issue. This paper reviews the security risks for mobile devices and studies several authentication techniques available for smart devices. The results from field studies enable a comparative evaluation of user-preferred authentication mechanisms and their opinions about reliability, biometric authentication and visual authentication techniques.     

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。     

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.     

煤矿电气安全关键技术研究

分析了2005—2009年全国重特大瓦斯爆炸事故的火源,得出了由电气火源引爆瓦斯事故最多且达48.1%的结论,并分析了矿用电气设备的安全性能,提出了矿用电气设备的使用场所及安全要求:(1)煤矿监控、通信、控制、信号等弱电系统和设备应优选本质安全型电气设备,设备之间传输的信号必须是本质安全型信号;(2)大功率电气设备应优选隔爆型电气设备,隔爆型电气设备宜将接线腔与主腔分腔布置;(3)当瓦斯浓度达到爆炸浓度时严禁开关特殊型矿灯;(4)低瓦斯矿井井底车场等非爆炸性环境宜选用矿用防爆型电气设备;(5)煤与瓦斯突出矿井严禁使用架线电机车和矿用一般型电气设备;(6)井下电气设备的欠压保护和失压保护应有延时措施,减少局部通风机停电次数;(7)井下排水设备宜选用大功率潜水泵;(8)开关等电气设备应设置在全风压进风处,若不能满足,必须设置甲烷传感器,并具备甲烷超限断电闭锁功能。文章对提高煤矿电气安全性、避免或减少瓦斯爆炸和淹井等事故发生具有指导作用。     

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。     

Super-resolution image reconstruction for mobile devices

With advanced mobile devices, the mobile applications of the high-definition display attract a lot of attentions nowadays. The existing image super-resolution methods are computationally inefficient for the high-definition display on the mobile devices. In this paper, we point out that the above critical issue deteriorates the display quality of the high-definition mobile devices. We propose an efficient and effective algorithm to reconstruct the high-resolution images for the mobile devices. Our algorithm outperforms previous approaches in not only smaller running time but also the higher quality of the super-resolution image reconstruction for the mobile devices.     

移动边缘环境下面向工作流管理的计算迁移方法

针对移动边缘环境下移动设备大量的能源消耗问题，为了优化移动设备的能源消耗，提出一种能耗感知的工作流计算迁移（EOW）方法。首先，基于排队论分析边缘设备中计算任务的平均等待时间，建立了移动设备的时间模型和能耗模型；然后，基于非支配排序算法（NSGA-Ⅲ）提出对应的计算迁移方法，对工作流的计算任务进行合理的分配，将一部分计算任务留在移动设备处理，或者迁移到边缘计算平台和远程云端，实现每个移动设备的节能目标；最后，通过CloudSim仿真平台对提出的计算迁移方法进行仿真和对比实验。实验结果表明，EOW方法能够明显地减少每个移动设备的能源消耗，同时满足每一个工作流的截止时间的要求。     

A way to develop devices for image fusion under rigid hardware restrictions

The algorithms and devices for image digital fusion are examined. The main steps for developing digital devices for image fusion are described, and the problems solved at each step are presented. The conclusions are illustrated by examples of development of such devices.