Applied Mechanics and Materials Vols. 571-572

Abstract: Tourism is an information-based industry. As travelers need diverse information such as sightseeing, gastronomy, accommodation, traffic, shopping, amusement, it is important to gather abundant information before making sound decision for travel. In the meantime, tourism is specific with time, location, climate, real-time, abruptness, in addition to complex nature in change, and it is a key issue to present quantitative analysis on reliability of tourism information service (abbr. TIS). This paper focuses on improving the reliability of TIS, design the mechanism of the reliability of TIS by analyzing the psychology of people in unconventional event, find the key factors of the reliability of TIS, explore the way to get better reliability of TIS, point out some hidden perils of security to provide pre-warnings by emulation of the scenario of TIS in unconventional events. Its achievement will help to reduce or avoid life or property’s lost of human in the similar occasion of real world and it is also useful in other industries such as manufacturing, transportation and so on.

Abstract: In Multi-Agent System, obligations are actions that agents are required to take or some states of affairs which should be maintained, formal modeling and verifying obligation policy which is high-level requirements specifications or communication protocol for constraining agent interaction can enhance the correctness of the system design. Therefore, in this paper a formal framework language for modeling obligation policy is introduced. In this method, the obligations are defined as a special social commitment, the state models of obligation are defined by classifying the obligation. Then we use the policy context and state model to formal the dynamic execution of obligation policy, finally the operational semantics of the framework language is defined as a state transition system which has Kripke semantic structure and it can be as formal foundation for model checking.

Abstract: For large-scale equipment systems whose elements and internal structure are complex, traditional systems engineering methods can’t meet the requirements of the system modeling. In this paper, a kind of modeling method based on UPDM is developed to solve the complexity of equipment systems. This paper proceeds as follow. Firstly, analyze the mission of equipment systems; secondly, using a variety of views product describes the equipment systems; then, validate the systems structure by generating an executable model. Finally, an experiment about equipment systems modeling of space weaponry indicates the modeling method based on UPDM is effective.

Abstract: Real-time log analysis on large scale data is important for applications. Specifically, real-time refers to UI latency within 100ms. Therefore, techniques which efficiently support real-time analysis over large log data sets are desired. MongoDB provides well query performance, aggregation frameworks, and distributed architecture which is suitable for real-time data query and massive log analysis. In this paper, a novel implementation approach for an event driven file log analyzer is presented, and performance comparison of query, scan and aggregation operations over MongoDB, HBase and MySQL is analyzed. Our experimental results show that HBase performs best balanced in all operations, while MongoDB provides less than 10ms query speed in some operations which is most suitable for real-time applications.

Abstract: With rapid development and popularity of smart phone and mobile internet, mobile client software (APP) is widely used in every aspect of daily life. To improve the informatization and intellectualization of Urban Rail Transit passenger services, the paper brings forward a method of optimal travel choice for passengers based on “dynamic travel time”(hereinafter to be referred as DTT), and also takes advantage of the Android platform to develop an APP for dynamic travel information enquiry. The structure of the APP and the key problems to be resolved during the development process are introduced. As the APP is applied into practice, it can provide passengers with effective support.

Abstract: A new coal mine equipment management system based on network is proposed in the paper. The principle of the mine production equipment service life cycle is introduced, the maintenance management information system framework and function modules are designed which combines with the characteristics of the mine production equipment to equipment status. The design of the device information management, spare parts management, state management, maintenance management and ledger management model selection are described in detail, and then the mine production management system based on the equipment life cycle prediction is build. The research result shows the coal mining equipment management system based on network can achieve long-term optimizing maintenance resources, and reduce maintenance costs and improve the efficiency of coal production and enterprise management level.

Abstract: Aimed at limitations of traditional entitative marine hydraulic training systems such as encapsulation, concealment and high cost, three-dimensional simulation training system based on visual reality technology is proposed and implemented. Computer modeling software and Unity3d platform are used to create 3D visual scenes which include the wharf, ship, cranes, hydraulic pumps and motors, hydraulic piping and valves, etc. Simulation models can be driven by visual handle and pushbutton, internal movement of equipment can be observed through the translucent casing during roam. The results show that simulation effect is vivid and intuitive, the purpose of simulation training can be achieved, and it is beneficial to improve the teaching quality.

Abstract: E-Learning 2.0 has played a significant role in training and development within the organizational environment. But how to evaluate the E-Learning 2.0 system remains unresolved. This study aims to propose an evaluation model for the enterprise E-Learning 2.0 system based on the information system success model. Firstly, the first level of the evaluation model is established by four aspects, including information quality, system quality, service quality and communication quality. Then, the second level of the evaluation model is constructed for these four aspects respectively. The case study will be in the future research to reveal the performance of E-Learning 2.0 system in the enterprise, which will be the guidance for the implementation of E-Learning 2.0 systems.

Abstract: When TMS320F28XXX DSP programs run from the on-chip flash, it’s about 30% slower than that from the on-chip RAM, which caused the poor performance when programs run directly from on-chip flash, so program code need to be transplanted to RAM in order to improve the running speed. This paper analyzes the running processes of TMS320F28335 DSP application and the code removal processes from on-chip FLASH to RAM, and then introduces the transplantation programming method. This method is verified feasible through the experiment designed in the project of gun control system based on DSP TMS320F28335, and it can be extended to practical engineering and industrial applications.

Abstract: According to the scientific research project management practice, the paper analyzes the main problems existing in current scientific research project management, research management system for positioning, the overall architecture, software architecture and other system functions and contents of the detailed design and implementation, provide reference and support for the further improvement and refinement of research management at all levels to promote further scientific research management, standardization.