Applied Mechanics and Materials Vols. 513-517

Abstract: The results of researches in the area of web-based simulation, motion capture and virtual reality show that is necessary to put new technologies in the process of continual learning. Several educators try to find out the possibilities how to integrate these technologies in curriculum. In this article we deal with the results of our research which was focused on the web-based simulations (mentioned results we consider as a basis) and we deal with motion capture technology as a one possibility how to make more attractive the process of education for students.

Abstract: We investigatein this paper spectrum sharing techniques for multiple unlicensed userstoshareanavailablesparechannelincognitiveradionetworks. Inparticular,consideringasingle-slotted aloha channel access model, we develop an effcient transmission framework that enablesthe detection of jamming attacks. The proposed transmission strategy adopts a randomized PN-codeassignmentforeach transmissionslot. Furthermore,giventhePN-basedtransmissionframe-work, a two-step jamming detection algorithm is also devised by combining an energy detectorand a correlation detector. Theoretical analysis of the detection performance is presented and theimpactofsystemparameters is demonstratedthroughnumericalexamples.

Abstract: Using the patents with multi-agent, we provide detailed insights into the cooperation of the marine industry, which is also a complicated innovation network with different agents, such as universities, research institutes, companies. Patent applications and publications are used as measures for the innovation output of the industry. We find that the cooperation in the four different stages is getting more and more intent, and companies are the biggest nodes in the networks. Effects are found that the nodes with more independent innovation would cooperate more with other nodes. Company nodes also tend to seek more partners in the interior, and have more cooperation with partners. But the internal cooperation is a little in the universities and research institutes.

Abstract: An optimization mathematical model of QoS routing, which with the objectives of network congestion control, is presented in this paper. Combining quantum computation and genetic algorithm, an algorithm for network congestion control based on quantum genetic algorithm (QGA) is proposed. Quantum bit and quantum rotation gate operation are used to update the chromosomes. The simulation results manifest that this algorithm is of fast speed and high efficiency and easily escape from local optimal solution. It can improve network performance and arrive at the purpose of congestion control.

Abstract: Using NRF905 wireless data transmission and STM32 microprocessor chips, a dormitory disciplinary monitoring and management system is designed. It can be real-time monitoring of each bedroom sound information and smoke information. Through the rational design of data frame structure, the system power consumption is minimal, with lowest system cost and ease of expansion.

Abstract: We had present a generic software framework introducing augmented reality technology into the virtual assembly system. The framework is built by the means of integrating OSG and osgART into the MFC application framework. On the basis, we developed an assembly operation system. We showcased the example applications, demonstrating the new possibilities created by augmented assembly.

Abstract: A novel algorithm is proposed for the purpose of improving the reliability and sensibility of fault component identification of wide area backup protection. The algorithm, called earth impedance comparison protection (EICP), is realized by comparing the ratios of different nodes, and the ratio is obtained by the bus voltage to the differential current. The advantages of EICP are verified in this paper using the measurement function of wide-area measurement system. The results of case studies show that EICP is superior to the current differential protection in terms of the sensitivity and to the directional pilot protection in terms of the dependability. The satisfactory results can be obtained when the EICP method is applied in the event of abnormal operations of protective relays and circuit breakers, measurement error scenarios or substation DC failure.

Abstract: This paper designs a permanent magnet synchronous motor controller based on STM32. The space vector control algorithm is introduced. The space vector control algorithm and SVPWM are realized based on STM32. The speed and current loop PID regulator can make the accurate control of permanent magnet synchronous motor. This paper presents the hardware and software design of the control system and software architecture. The result shows that the controller design is feasible and it can be widely applied to various CNS.

Abstract: Based on literature review from both perspectives between emerging technology transfer and sustainable development, this paper conducts a study on identifying some fundamental components and approaches. The research results are significantly important for further modeling on suitability monitoring related with emerging technology transfer, as well as extending research scope on suitability monitoring modeling.

Abstract: At present, the wireless communications and mobile computing technology are relatively well developed. This article proposes a new special vehicle monitoring system in order to meet the needs of intelligent transportation industry. The monitoring system for special transport vehicles is designed to pass a full range of real-time monitoring to safeguard the vehicle transport of dangerous or valuable goods in transit security. The system has two main subsystems, including vehicle terminal subsystem and server-side subsystem. Wherein, the main function of the vehicle terminal subsystem is to all-round monitoring the specialty vehicles, including video, vehicle status, goods status and environment status etc. The terminal ensures the effectiveness of monitoring by using a 3G-based hybrid network access. The server-side subsystem is primarily responsible for information collection/processing/storage, providing monitoring display and publishing the WEB services which supported logistics information management systems and real-time traffic information. In practice, this article designs and implements a prototype system based on a natural gas transport fleet.