Applied Mechanics and Materials Vols. 644-650

Abstract: On the basis of dynamics simulation software ADAMS, we built dynamics models of jaw crusher with multi-joint clearance. Contrast the link’s displacement, velocity, acceleration and the contact force between deputy campaign elements of the single joint clearance with the double joint clearance. Because the coupling superimposed of the double joint clearance, the velocity, acceleration and contact force is more complex. The whole is greater than the consideration of only a single joint clearance .But in some short period of time, there will be an acceleration that the contact force of the double joint clearance less than the single joint clearance. The dynamic characteristics analysis of multi-joint clearance is closer to the actual work of crusher.It can provide a theoretical basis for the control and optimization of the jaw crusher .

Abstract: This paper is a study on minimum query peers and apply glossary semantic similarity of “HowNet” to P2P search. It introduces and analyzes the intelligence search algorithm and the glossary semantic similarity of “HowNet”. Based on the intelligence search algorithm, heuristic search algorithm on “HowNet” is proposed and analyzed.

Abstract: Underwater Sensor Network (UWSN) is a powerful technique for aquatic applications. Although the international researches on this topic are quite prosperous, it is still in its early stage of development. UWSN is vulnerable to various kinds of attacks because it is usually deployed in hostile environments. This paper systematically summarizes and analyzes the existing security attacks and defensive mechanisms of the UWSN. We expect it can offer a theoretical reference for the establishment of the UWSN security system.

Abstract: The question of metro safety is one of the hot areas of current research. Subway accident will not only cause a lot of casualties, but also caused widespread traffic jams, to which is very important to pay close attention. Through the analysis of potential safety hazard of metro interchange station and the distinguishing feature of the technology of multi-agent, this thesis pose a new application of multi-agent in emergency events of metro station.

Abstract: An evaluation of cyberwar's synthetical ability based on projection pursuit method is discussed in this article. The method is adopted to transform the main indexes which impact on cyberwar's synthetical ability into one-dimensional projection value and give the order of evaluation of every countries' cyberwar's synthetical ability, at the same time, get the weight of every main index. This article supply a new idea to the evaluation of cyberwar's synthetical ability.

Abstract: In wireless sensor network (WSN), LEACH protocol is a typical representative of the hierarchical topology control protocol. Compared to plane multiple hops routing protocol, it can significantly prolong the life cycle of the network. But LEACH protocol having the problem of uneven distribution at the cluster head election, this paper proposes a low energy adaptive clustering routing protocol based on the partition. On the basis of the partition, cluster heads are selected by the energy of nodes and their location information. Simulation experiments show that the proposed protocol can be more effective than LEACH to balance the energy and improve the life cycle of the network.

Abstract: This paper considers the factor of a mechanism based on customer, with the purpose of getting to know the different characteristics that must be taken into account during the development of software as a procedure. This also involves the attending of all kinds of relevant person of the Information system model together with the users’ message exchanging experience. This paper offers a mechanism of the related role in the design of a software component as a procedure, with the target of confirming their attending outside and within the organization. The purpose is to create a component centered on the user, involving clients and experts to work collaboratively; and get usable software as information system.

Abstract: Due to life threatening situations, timely sending of data is essential. In this study transmission delay of different paths, through which data is sent from sensor to health care center over heterogeneous multi-hop wireless channel is analyzed. Data of medical related diseases is sent through three different paths. In all three paths, data from sensors first reaches ZigBee, which is the common link in all three paths. Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX), Universal Mobile Telecommunication System (UMTS) are connected with ZigBee. Each network (WLAN, WiMAX, UMTS) is setup according to environmental conditions, suitability of device and availability of structure for that device. Delay of data reaching each device is calculated and represented graphically. Main aim of this study is to calculate delay of each link in each path over multi-hop wireless channel.

Abstract: The development of modern network and information technology makes the construction of wisdom campus based on the network become an important topic in the development of education information. This paper constructs the overall framework of intelligent campus based on the perception layer, network layer, data layer, service layer, application layer, terminator layer and user layer. The framework’s functions contain information collection, network integration, data integration, service integration and unified portal service. At the same time, it uses information technology standard system and security guarantee system as a support system and uses the cloud computing and Internet of things as the key technology to preliminary study on the construction of wisdom campus based on network.

Abstract: In this paper, we combine the practical application of my school digital campus construction, explores the construction of campus smart card under wisdom campus-based platform in our college. Select non-contact logic encryption IC card. Analysis the overall objectives and system functional requirements of the wisdom campus smart card system, present a system function chart. Finally, combine with cooking food department, which is the characteristic profession of our tourism school, system analysis and design a training room management subsystem in campus smart card system.