日本长期使用产品标示制度

对日本2009年4月1日起正式实施的“长期使用产品安全标示制度”的宗旨、对象产品和制度具体要求等进行了详细介绍,并提出了我国企业和有关政府部门等应采取的应对措施。     

On designing incentive-compatible routing and forwarding protocols in wireless ad-hoc networks

In many applications, wireless ad-hoc networks are formed by devices belonging to independent users. Therefore, a challenging problem is how to provide incentives to stimulate cooperation. In this paper, we study ad-hoc games—the routing and packet forwarding games in wireless ad-hoc networks. Unlike previous work which focuses either on routing or on forwarding, this paper investigates both routing and forwarding. We first uncover an impossibility result—there does not exist a protocol such that following the protocol to always forward others' traffic is a dominant action. Then we define a novel solution concept called cooperation-optimal protocols. We present Corsac, a cooperation-optimal protocol which consists of a routing protocol and a forwarding protocol. The routing protocol of Corsac integrates VCG with a novel cryptographic technique to address the challenge in wireless ad-hoc networks that a link’s cost (i.e., its type) is determined by two nodes together. Corsac also applies efficient cryptographic techniques to design a forwarding protocol to enforce the routing decision, such that fulfilling the routing decision is the optimal action of each node in the sense that it brings the maximum utility to the node. We evaluate our protocols using simulations. Our evaluations demonstrate that our protocols provide incentives for nodes to forward packets. Additionally, we discuss the challenging issues in designing incentive-compatible protocols in ad hoc networks. Part of this paper appeared in a conference version [49]. Sheng Zhong was supported in part by NSF grants ANI-0207399 and CNS-0524030. Yang Richard Yang was supported in part by NSF grants ANI-0207399, ANI-0238038, and CNS-0435201. This work was partly done while Sheng Zhong was at Yale University; Yanbin Liu was at University of Texas at Austin. Sheng Zhong is an assistant professor in the State University of New York at Buffalo. He received his PhD (2004) from Yale University and his ME (1999), BS (1996) from Nanjing University, China, all in computer science. His research interests include economic incentives and privacy protection, particularly incentive and privacy problems in mobile computing and data mining. Li Erran Li received his B.E. in Automatic Control from Beijing Polytechnic University in 1993, his M.E. in Pattern Recognition from the Institute of Automation, Chinese Academy of Sciences, in 1996, and his Ph.D. in Computer Science from Cornell University in 2001 where Joseph Y. Halpern was his advisor. He is presently a member of the Networking Research Center in Bell Labs. His research interests are in networking with a focus on wireless networking and mobile computing. He has served as a program committee member for several conferences including ACM MobiCom, ACM MobiHoc, IEEE INFOCOM and IEEE ICNP. He is a guest editor for JSAC special issue on Non-Cooperative Behavior in Networking. He has published over 30 papers. Yanbin Liu received her B.E. degree in Computer Science and Technology from Tsinghua University (1993), Beijing, China, in 1993, and her M.S. degree in Computer Science from the University of Texas at Austin (1998), where is a Ph.D. candidate. Since 2006, he has been with IBM TJ Watson Research Center, Hawthorne, NY. Her research interests are in real-time systems, grid computing, mobile computing, and computer networks. Yang Richard Yang received his B.E. degree in Computer Science and Technology from Tsinghua University, Beijing, China, in 1993, and his M.S. and Ph.D. degrees in Computer Science from the University of Texas at Austin in 1998 and 2001, respectively. Since 2001, he has been with the Department of Computer Science, Yale University, New Haven, CT, where currently he is an Associate Professor. His current research interests are in computer networks, mobile computing, and sensor networks. He leads the Laboratory of Networked Systems (LANS) at Yale University.     

由AT89C51与HX2262／HX2272实现的站址自识别系统

针对我国部分城市公交采用手动电子报站和人工报站的方式存在的弊端,研发出了站址自识别系统(专利号:ZL032842236)。由停靠站址"信息码发射装置"和车载"信息采集、决策级数据融合与解码、查询、处理、控制、存储、驱动、报读装置"等组成。该系统涉及无线信息编、解码通信,数据融合与信息处理,单片机嵌入式控制,语音生成与处理,车载电源变换等技术支持。实现车辆上、下行运程相关信息的人性化报读,站点与车载装置无线信息交互的距离为20~30 m可调。     

ZB45包装机烟包输送通道气流提升装置的应用

为了将烟包由包装机出口高度提升到高架通道高度,通常采用爬坡通道输送烟包,但该方式存在着压轮易损坏烟包头部等问题。为此设计了烟包输送气流提升装置,通过压缩机提供高压空气进入导风架内,在风道中形成稳定气流加速提升烟包到高架通道。ZB45包装机实际应用表明,气流提升装置能够顺利地将烟包吹送到指定高度,且对烟包外观没有损坏,且提升速度快,结构简单。     

热熔型道路反光标志涂料

介绍了一种热熔型道路反光椟示涂料的制备过程、经测试,它具有优良的耐久、快干和反光性能,其主要性能指标达到或超过日本ＪＩＳ＿Ｋ－５６６５同类涂料的工业标准。     

Chemical trail marking and following by caterpillars ofMalacosoma neustria

Chemical trail marking and following by gregarious caterpillars,Malacosoma neustria L. (Lepidoptera: Lasiocampidae), was studied in the laboratory. As in other species ofMalacosoma, larvae deposit a trail pheromone from a sternal secretory site when searching the host for food. Larvae in the vanguard of foraging columns establish chemical trails as they explore new territory. Marking behavior diminishes as successive unfed foragers utilize the trail. These exploratory trails are subsequently overmarked by fed larvae returning to the tent. Other foragers follow the trails of fed larvae in preference to trails of unfed larvae. Thus, like the eastern tent caterpillar,M. americanum, successful foragers ofM. neustria recruit colony-mates to feeding sites. The chemical activity of both recruitment and exploratory trails degrades slowly, suggesting that the trail pheromone ofM. neustria is a nonvolatile substance. Caterpillars ofM. neustria readily follow the nonvolatile trail pheromone which has been identified fromM. americanum, 5-cholestane-3,24-dione.     

论铸件尺寸设计原则

提出了铸件尺寸的制订不应以零件图为基础,而应以工序图为基础。尤其是要考虑到粗基准的原则。这样即可保证铸件各面有均匀合理的粗加工余量,又可保证非加工面与加工面之间的位置尺寸。     

连接条冲孔落料压字复合模设计

对连接条零件进行了冲压工艺分析 ,介绍了实现该零件冲压工艺的冲孔、落料、压字复合模结构 ,并分析了模具工作过程及压字凸模的结构。     

Crystal growth induced by Nd:YAG laser irradiation in patterning glass ceramic substrates with dots

In this work a glass ceramic substrate was processed by focusing a laser beam inside the said material. The crystal phase within the amorphous matrix provides mechanical properties to the glass ceramic substrate in such a way that dots can be patterned inside the fore-mentioned material without producing any cracks. These marks are made up of crystals, the growth of which has been induced by the laser beam. These inner structures can modify the optical, thermal and mechanical properties of the glass ceramic substrate.A Q-switched Nd:YAG laser at its fundamental wavelength of 1064 nm with pulsewidths in the nanosecond range has been used.Morphology, composition, microstructure, mechanical and thermal properties of the processed material are described.