Applied Mechanics and Materials Vols. 433-435

Abstract: As the propaganda and popularization of saving electricity, more and more people realize the importance of saving electricity. But most of the families have ideological struggle between saving electricity and satisfying their own comfort, which is negative to saving electricity. In this article, the investigation shows that most people are more willing to make the balance between energy-saving and comfort. Electricity consumption data is obtained through surveys. These data are analyzed by disturbance fuzzy comprehensive evaluation of residential. Suggestions for improving energy efficiency will be raised and residents can make the balance between energy-saving and comfort.

Abstract: An effective filtering method for MEMS gyro random drift is discussed. On the basis of the fundamentals and defect analysis of wavelet threshold de-noising, a new continuous threshold function at λ is presented, signal concussion and distortion in wavelet hard and soft threshold method is effectively overcome. The improved wavelet de-noising algorithm is applied to MEMS gyro signal filtering experiment and experimental results show that the proposed method can effectively reduce the high frequency noise, restrain the MEMS gyro random drift, increases the SNR and decrease the MSE.

Abstract: An intelligent thermometer system design is presented in this paper. There are temperature sensor module, data collection module, data processing module, keyboard number tube module, voice module and LCD display module in this system. Due to excellent performance of temperature sensor, temperature sensor is used in system to obtain the temperature, transform the voltage, amplify OP precisely, and get 12 bits accuracy of samples. In order to make the system interface friendly, embedded software is developed to realize such functions as alarm temperature settings, LED screen display, audio playback and so on.

Abstract: By applying data fusions from GPS and MEMS sensors to plan and track path, and achieve the goal of mobile robot autonomous navigation. An improved filtering method based on Sage_Husa filtering is described, which can effectively restrain the filtering divergence, improve dynamic performance of filter, enhance stability and adaptability of filter, and improve navigation precision. With fuzzy adaptive PID control, the stability of control system is guaranteed with control strategy adjustment in real time. Finally, it is programmed that converting the fusion of high-precision GPS and attitude information into control command so as to succeed in robot navigation and real-time display on map. The feasibility and effectiveness of methods described above are verified and proved by experiments and MATLAB simulation.

Abstract: A 1700V/100A NPT-IGBT was designed by process simulation, which had an internal transparent collector and a planner cell structure. The Static characteristics were studied. The simulation results show that the threshold voltage of the device can be adjusted by changing the injection dose or the drive-in time of the p-well. The saturation voltage of the device can be adjusted by changing injection dose of the p-well or the internal transparent collector. This device was fabricated using a self-aligned process, the test results show that the breakdown voltage is more than 2100V, the saturation voltage is between 2.5V and 2.7V and the threshold voltage is between 3.9V and 5.9V, which are similar with the simulation results.

Abstract: The designation idea and the hierarchy model for the WSDS based on double hierarchy topology have been described. In order to support QoS-based Web services publish and discovery, the QoS broker mechanism is introduced into the traditional Web service discovery model. On the basis of these, according to the characteristics of QoS requirements of different users, a QoS-based Web service discovery algorithm is proposed. Put forward dynamic tuple model, give two-phase service location algorithm adapting double hierarchy topology network, and then compare and test with the correlative work of UDDI. Hierarchy model is introduced to defining dynamic tuple model in the data-level for resolving the heterogeneity between diversified data source and data modal. The unified publish and query API customized to implement unified accessing mode in the abstract level. The scalability, agility and robustness of the WSDS are assured by a double hierarchy topology structure. The experiment result indicate, double hierarchy topology system has obvious self-organization and well scalability, and adopt to the independence of web service, dynamic change and strong distributing, at one time, two-phase service location algorithm has well abilities of service location.

Abstract: Pop-up form is a method to design web pages. It divides web pages into information interface and interactive interface. The initial state of interactive interface, namely interactive form, is hidden. And it can be opened when needed. Users interact with web applications through pop-up forms, and request data processing functions of Web applications based on Ajax technology. First, the concept of pop-up form and how it works are described in this paper, and then the methods and techniques to implement pop-up forms in JSF applications are introduced. Finally, the benefits of using pop-up form are summarized.

Abstract: The topic model LDA can uncover latent topics in text mining, through the probability distribution of words in the text to get the distribution of topics. This approach ignores the correlation between the topics, so in some actual domain it is not enough to reflect the real situations of the topics. We can divide the topics into two classes: key topics and unimportant topics. The key topics can reflect the word attributes well, and other topics can be look as subordinate. Considering the relations of the topics, a topic reduction algorithm is proposed to retain the key topics and delete the redundant topics based on rough set. Because the LDA topics exists uncertainty distribution and rough set can deal with uncertain data well, so the algorithm based on rough set can improve the accuracy of topics analysis.

Abstract: The firewall is one of the most important network security facility and is widely used as a base infrastructure in a large enterprise network. When policy changes, the administrator must find all the potential conflicts between existing policies to ensure network security. That's a waste of time and energy. Proceeding from the demands, this paper analyzes key points and difficulties in the design process for the tools, applies mature algorithm of policy conflict detection, and finally proposes a flexible and scalable design. The prototype system proves that the tool does effectively detect all conflicts in policy set, and in the form of reports for the administrator.

Abstract: For the system security risks of multiple administrators to manage the network teaching platform, role-based access control (RBAC) from the ThinkPHP framework is used to implement the rights management of the network teaching platform. Teachers or administrators access and can only access the related function modules or methods authorized by the super administrator. It facilitates the rights management of the network teaching platform and makes a clear division of works for the multiple administrators and more scientific management of the platform. Practice shows that RBAC-based rights management for the network teaching platform is simple, practical and has a good application value.