bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on P2P Traffic Monitoring System Based on DPI Technology
Authors: Ma Zhi Qiang
Published: October 2014

This paper focuses on the key technologies of P2P technology and network traffic monitoring, which focuses on AC automaton and bypass interference control technology, and on based of it, we design a new P2P traffic monitoring system. The system uses DPI and DFI recognition technology, as well as straight loss and bypass interference control technology, basically meet the recognition and control of P2P traffic. Finally, the test results show that this system recognition accuracy of P2P traffic is high, good control effect, function and performance meet the design requirements.
Design and Implementation of Data Acquisition System Based on Linux Platform
Authors: Feng Yun , Yan You Ping , Zuo Nan
Published: October 2014

This paper introduces the hardware structure and software design of data acquisition system based on embedded Linux. In order to improve the real-time response performance and the ability of multi task for system, using ARM9 microprocessor technology in hardware, and transplant the Linux operating system, and the system reliability and scalability can be improved. The design makes full use of the characteristics of embedded Linux. The system software module have data acquisition module, data processing module, data communication module and data diagnostic module. The embedded Linux operating system is transplant into data acquisition system, that can accelerate the development of the system and convenient to future expansion functions, improve the observation data timeliness and accuracy, and can realize automation observation.
Effect of Solution Heat Treatment Conditions on the Mechanical Properties and Formability for AA 2024 Alloy
Authors: Dilmeç Murat , Arıkan Hüseyin
Published: October 2014

The properties of the heat-treatable aluminum alloys are enhanced by solution heat treatment and controlled ageing. The mechanical properties become stable with natural ageing at room temperature within a few days for some heat-treatable alloys, especially 2XXX series, considerable changes of the properties occur even after many years for some of them. Solution heat treatment of AA 2024 is very critical and sensible and therefore it should be carefully conducted. In this research, the effects of the solution temperature, soak time, quenching delay and heating rate of AA 2024 on the mechanical properties and the formability index (limiting dome height) were investigated in order to determine optimal solution heat treatment condition. Mechanical properties were determined and limiting dome heights of the formed parts were measured for all the situations and optimal solution heat treatment conditions were determined by using ANOVA method.
Research on Performance and Preparation of LiFePO4
Authors: Li Yan
Published: October 2014

This paper makes use of various synthetic methods and analysis techniques, from material preparation, structure characterization of the electrochemical performance, we systematic study lithium iron phosphate, preparation electrode materials with good performance. This paper mainly aims at the two fatal drawbacks restrict the performance of LiFePO4cathode material, namely, low electron conductivity and lithium ion diffusion rate low, take the material particle, particle deposition on the surface of carbon conductive layer and Mg2+ion doping and other measures to modify it to explore, in order to improve the electrochemical performance of LiFePO4cathode material.
The Design and Implementation of CW Radar Signal Processing
Authors: Tao Jin , Chen Chun , Liu Shang Fu , Han Qing Wei
Published: October 2014

This paper study continuous wave radar data processing algorithm for low altitude detection, it is applied to continuous wave low altitude search radar data terminal, it can realize real-time correlation and track processing for the data of target echo and false alarm false alarm filtering, to get the real targets of track parameters. Finally, through the realization of FPGA, the experimental results achieve the precision of the system.
Unscented Particle Filter Algorithm for Ballistic Target Tracking
Authors: Zhai Yan , Guo Xiao Bo , Yan Yong Gang
Published: October 2014

At present, the ballistic Target tracking has a higher demand in convergence rate and tracking precision of filter algorithm. In the paper, a filter algorithm was improved based on particle filter. The algorithm was carried out from the aspects such as particle degradation and particle diversity lack. A novel ballistic coefficient parameter model was built, and was expanded to the state vector for filtering. Finally, the improved algorithm was simulated by MATLAB software. The simulation results show that the algorithm can obtain better convergence speed and tracking precision.
Research on Detection and Distribution of Organic Chlorine Content in the Chin-Sha River Basin
Authors: Zhang Ru Ling
Published: October 2014

This paper collected 18 soil samples in the Chin-sha River basin, and analyzed residues of organochlorine pesticides (OCPs) in soil using gas chromatographic method, revealing the organochlorine pesticide residues, the distribution and sources in the river basin. The results show that, the relatively high sampling residues of organochlorine pesticide distribute in the industrial area. The composition and characteristics of organic chlorine pesticide show that the organochlorine pesticide residues in soil mainly come from the historical use. Compared with the domestic similar research, residual organochlorine pesticides in Chin-sha River basin were lower.
Research on Data Compression of WSN Based on Compressed Sensing
Authors: Li Jun Xia
Published: October 2014

For Wireless Sensor Networks (WSN) is responsible for sensing, collecting, processing and monitoring of environmental data, but it might be limited in resources. This paper describes in detail the compressed sensing theory, study the wireless sensor network data conventional compression and network coding method. The linear network coding scheme based on sparse random projection theory of compressed sensing. Simulation results show that this system satisfies the requirements of the reconstruction error of packets needed to reduce the number of nodes to the total number of 30%, improves the efficiency of data communications in wireless sensor network, reduce the energy consumption of the system. With other wireless sensor network data compression algorithm, the proposed algorithm has the advantages of simple realization, the compression effect is good, especially suitable for resource limited, and the accuracy requirements are not particularly stringent in wireless sensor networks.
Research on Car Reversing Warning System Based on CAN Bus
Authors: Qi Wei , Zhang Xiu Ru
Published: October 2014

The paper study the software and hardware principles of ultrasonic ranging reversing radar, design the vehicle reversing radar based on intelligent node of CAN bus, realize data communication and resource sharing with other intelligent nodes of the reversing radar. The experimental results show that, the design can achieve the expected technical indicators design, measurement precision and the reliability is high, which has certain guiding significance in the design of the car reversing radar, has wide application prospect and practical significance in the function of the extended CAN bus communication messages design and automotive CAN network.
Research on Network Architecture and Security in Small and Medium Sized Enterprises
Authors: Zhang Yan Mei
Published: October 2014

The paper takes network security guard as a dynamic process, each link of the network security technology throughout the entire firm information operation, namely design an integrated network security system, which includes firewall system, VPN system etc.. The system can meet the requirements of network security and the goals of design network security.
Inflatable Lifting Web Professional Boots RS-1 Design
Authors: Li Hong
Published: October 2014

Research and development design is involved with inflatable lifting web professional boots in architecture industry limited space installation work technology field. This web-based boot includes boot body, lifting device and support to support the feet and the lifting device to fix on the boot body. The support uses the lifting device to connect to the bottom of the boot body, and through the lifting device function, it can have lifting displacement to the boot bottom. The workers put foot fixed on the support, so as to make the inflating lifting boots walk along with the workers. The adjusting lifting device can make support member move far or near the bottom direction of boot body. The workers can lift higher or lower along with the support. The workers can adjust the lifting device according to specific work height, without using or moving ladder or stool, to save time and improve the work efficiency.
Research on Vibration Characteristics of Large Scale Belt Conveyor and its Application
Authors: Gao Yang
Published: October 2014

High speed and large capacity belt conveyor is the main development trend. In the design, calculated and used of belt conveyor must be considered the high speed, large capacity, dynamic load. This paper starts from the analysis of conveyor belt transverse vibration. Through calculate transverse vibration natural frequency of conveyor belt, and analyze the lateral stability of belt conveyor.
Finite Element Analysis and Experimental Validation of Warm Hydromechanical Deep Drawing Process
Authors: Acar Dogan , Turkoz Mevlut , Gedikli Hasan , Cora Omer Necati
Published: October 2014

This study intended to establish finite element analysis (FEA) model of warm hydro mechanical deep drawing process (WHMD) of cylindrical cups by means of commercial FEA package Ls-Dyna The validity of established FEA model is verified by means of WHMD experiments through several studies. It was noted that the established model successfully simulated the real process leading to significant cost and time spent on trial-error stage in hydromechanical deep-drawing of lightweight alloys.
3D Nonlinear Analysis of the Preloading Filling Spiral Case of the Jinping-I Hydropower Station
Authors: Xing Xiang Lin
Published: October 2014

In consideration of the contact between the steel spiral casing and the peripheral reinforced concrete, a nonlinear analysis for the combined bearing structure of the JinPing-I preloading filling spiral case has been made with ANSYS. Contrasts of the stress of the reinforcing bars, the biggest width of the crack and the outspread section of the crack has been made with the different parameters of preloading pressure and reinforcement scheme, resulting in a reasonable preloading pressure and reinforcement scheme. This conclusion has been applied to the spiral casing of JinPing-I hydropower station.
Research on Thermal Insulation and Energy Saving of External Wall in City High-Rise Building of Cold Area
Authors: Zhou Ming Gui
Published: October 2014

This paper applies the method of numerical simulation and field detection, and studied energy-saving insulation characteristics on the external walls of high-rise buildings in cold area, analyze and recommend the best arrangement of building and the most generous exterior wall insulation system suitable for cold area, and the degree of insulation materials were studied. The results show that: the mode preferred cold area is exterior insulation, insulation material made of extruded polystyrene board, frame structure filling wall preferred ceramsite hollow block.
Research on Stability Calculation Methods for Grillage Supporting Structure with Pre-Stressed Anchor
Authors: Zhou Xiang Ling
Published: October 2014

Aiming at prestressed anchor cable frame in the presence of reinforcement landslide problem, through the selection of test points, the paper study and tested soil pressure, frame internal force and prestress losses under prestressed anchor cable frame beam, reveal the law of internal force distribution, and provides a theory basis for the rational design of prestressed anchor cable in landslide..
Study of Soil and Water Conservation Function on Slope with Different Planting Patterns for a Typical Small Watershed in Karst Region of Guizhou Province
Authors: Li Rui
Published: October 2014

Ten runoff plots with different planting patterns were established for experimental observation in Yangjichong small watershed of Longli County in Karst region of Guizhou Province. Results show that under the same rainfall condition, shrub land, natural grassland and abandoned land presented the best function of soil and water conservation. The function of soil and water conservation was poor for arbor planting pattern, because the shrub layer, herb layer and forest floor were not formed. Because of no-tillage, surface crust and other effects, the function of soil and water conservation in slope farmland was better than that in runoff plots with arbor planting pattern.
The Dynamic Model of Customs’ Initial Trust Formation Mechanism Analysis in B2C
Authors: Wang Jing Bo , Fu Yuan Zhai
Published: October 2014

It has been widely believed that trust is the basis for on-line trading by both academia and practice. The process of f initial trust formation is a dynamic and repeated process. In the electric business environment, this work chose to research the first phase of the process, which is initial trust. The Writer established dynamic model of initial trust formation biased on theory of planned behavior with other theories, such as TAM and social exchange theory, after micro-analyzing this formation mechanism from. in order to confirming effectiveness of the dynamic model, the writer adopted empirical study, from which writer got an order of . From the result of empirical study, we got the strength order of main factors that can influence the establishment of initial trust.
Design and Implementation of HR Management System in Electric Power Enterprise
Authors: Li Hui
Published: October 2014

This paper analyses the content and process of human resource management information system in electric power enterprise, and will be required to set up a reasonable data into the database, according to the design principle of relational database for each database table to create a relationship between tables. Database query using a variety of optimization methods that greatly improves the query speed. System access mechanism ensure each administrative access authority. In the protection of information security, to meet the needs of users at the same time, System realize network management of electric power enterprise human resources, improve the efficiency of office.
Research on Enterprise Logistics Management System Based on Internet of Things
Authors: Tang Li Qiang
Published: October 2014

Through the analysis of the feasibility of using network technology and network technology in supply chain management system, the paper puts forward the design framework of supply chain management system based on the Internet of things, describes the key technology of the system. The application of Internet of things in the supply chain management system, that will realize the effective management of the whole supply chain; enhance the competitiveness of enterprises and the whole supply chain.
The Application of Automatic Routing Technology in the Logistics System Based on Internet of Things
Authors: Zhang Nan Bing
Published: October 2014

According to the development trend of intelligent logistics in our country, combining database, communication, GIS (Geography Information System) technology, the paper study the key core technology of each module monitoring platform for vehicle monitoring system, and establish logistics transport vehicle monitoring platform that oriented small and medium-sized logistics enterprises, to realize the whole process of real-time monitoring for logistics and transport the vehicle from the warehouse to transportation, promote the informationization of logistics and transport.
Study on the Determination of Cypermethrin Residues in Vegetable
Authors: Zhang Ru Ling
Published: October 2014

The paper establish an analysis method for determination Cypermethrin pesticide residue in vegetable. Using acetonitrile to extract cypermethrin in vegetable, and purified by Agilent Florisil column, NH2 column and C18 column solid phase extraction column for the samples, using capillary column gas chromatography as a detection method, GC-ECD to qualitative analyze. The recovery rate of Cypermethrin is 91.2% ∼ 98% after Cleanert Florisil, the coefficient of variation is 0.53% ~ 3.67%, the detection limit is 0.0015 mg • kg -1. The first day, spraying the fenvalerate, dimethoate, chlorothalonil pesticides residues in lettuce was higher than the greenhouse tomato; pesticides (dimethoate, chlorothalonil, fenvalerate) residues in vegetables were higher than those in the open field, pesticide degradation speed is obviously higher than in greenhouse. Subsidence of pesticide is an important factor affecting greenhouse pesticide residues.
The Research on Knowledge Sharing in the Small and Medium-Sized Enterprise Based on Cloud Computing
Authors: Hu Ji Chao , Yang Xiang Wen
Published: October 2014

The paper combine cloud computing with knowledge management, and classify the knowledge management of enterprise information management system, finally the paper plan and design the overall architecture of enterprise management information system. According to the model of cloud computing, establish the cloud computing platform based on the construction of cloud computing and virtualization technology, in order to achieve the overall architecture of the management information system of enterprise that migrate to the cloud computing environment. This paper mainly introduced in the cloud computing architecture of enterprise management information system under the environment of cloud computing and implementation of knowledge management system.
A Temperature Measurement Method Based on RC Discharge Circuit Using Platinum Resistance
Authors: Zuo Xiao Qiong , Jia Jian Ping , Lei Juan
Published: October 2014

This paper proposes a temperature measuring method of low cost and stable precision based on platinum resistance. RC discharge circuit is composed of platinum resistor and fixed capacitor,the discharge time of fixed capacitance in the circuit is used for calculating the platinum resistance temperature resistance. The experimental results show that this is a simple and low cost method .
A Security UV Curing Device Based on LED Array
Authors: Bao Chuan Mei , Liu Chang Liang , Li Chun Jun , Wang Gu Chang , Gao Fei , Yi Zhe Jing
Published: October 2014

The study mentioned a curing equipment with UV LED array based on pyroelectric sensor and AP3706, which is based on the primary side control circuit so that it can complete the LED array constant voltage constant current output.the light source drive can output the constant voltage and constant current. The sensing signal processing signal integrated circuit BISS0001 as the pyroelectric sensor amplifier circuit as core, with relay making up the protection module of curing device. The experimental results show that, the curing equipment can realize the stable and homogeneous UV output, and when a human body in front of LED, the array will disabled to keep the human body away from damage UV induced.
Research on Gate Valve Internal Leakage Detection Based on Acoustic Emission Signal Processing
Authors: Zhu Liang , Zou Bin , Gao Shao Hua , Jiang Ming , Li Zhi Ping
Published: October 2014

Gate valve is common equipment in the petrochemical industry. It often brings out internal leakage because of quality, operation, corrosion and other reasons, and has adverse influence on safety production, environment protection and energy conservation. This paper put forward the on-line detection method about the gate valve internal leakage detect problem on the basis of AE signal analysis. Firstly, introduced the structure of gate valve and main reasons of internal leakage, discovered the acoustic emission signal parameters of gate valve internal leakage, and derived the relation model between internal leakage and AE signal theoretically. Then, constructed internal leakage signal acquisition platform based on DN80 gate valve internal leakage simulation system. Finally, put forward gate valve gas internal leakage test, set the different pressure at different points on the conditions of different pressure valve of 0.2MPa, 0.4MPa and 0.6MPa, The experiment showed that gate valve internal leakage status can be displayed by the signal RMS value when the gate valve internal leakage AE signal is between 30kHz and 80kHz. The AE signal next to the gate valve downstream position is the strongest. Internal leakage of the valve exists if downstream signal was significantly greater than the upstream signal or the background noise. The AE signal strengthened while the pressure difference between upstream and downstream is increased.
Design and Implementation of Portable Test Diagnosis Instrument for a Type of Electronic Equipment
Authors: Zhou Xiao , Zhao Hai Yan , Xie Rong Yue , Zhu Zhong Tao
Published: October 2014

To solve the problem of a type of electronic equipment maintenance, a kind of portable testing instrument is developed. The instrument adopts embedded development, PC104 bus and fault reasoning technology to realize the functions of signal test, fault diagnosis, repair instructions and data query. The instrument is mainly composed of a hand-held chassis, LCD screen, touch screen, Intel main control board, oscilloscope card, multimeter card and power supply module, on the basis of PC104 bus structure. The A/D conversion circuit uses multiple cross parallel high-speed data acquisition architecture to achieve sampling data of higher accuracy and higher speed. The main control board and test function card is designed and the principle of circuit module is described. The signal testing and fault diagnosis software is developed. The instrument has good application effect, with the advantage of practical and portable.
Study on Detection of Black Field and Static Frame in IPTV and Mobile TV’s Quality Supervision
Authors: Lu Xu , Ding Hong Wei , Wang Yong , Guo Jia , Cheng Hai Jie , Zhai Ran
Published: October 2014

With the digital and networked development in information industry, people's requirements for video playback quality step up, and people put forward higher requirements to the regulatory work. After timely detecting factors which effect the quality of video playback, such as: mosaic, no sound, black field, supervision departments take corresponding measures to adjust the broadcast program which is beneficial to improve the playback quality. Among them, this article made some analysis on the static frame and black field which are important parts of the program content detection, and tells us the causes and characteristics of them. Then we design the detection method for these two kinds of phenomena by controlling the static frame and black field threshold size .Finally, we use the MATLAB program to realize the detection of the static frame and black field.
Design of Civil Aircraft Avionics System Bus Excitation System
Authors: Ma Teng Da , Zhou De Xin
Published: October 2014

The avionics system is a core component of the civil aircraft. To reduce the risk and cost of developing avionics system, shorten the development cycle, through the development process of avionics systems, variety of simulation and verification must be done. The bus excitation signals need to be provided for each avionics unit and the signals from each avionics unit need to be received and processed. The multilayer abstract model and organizational structure model of the bus excitation system was established. And a complete bus excitation system was designed. In this system, the ARINC429 bus signals and discrete signals for communication and navigation equipments were provided, and the signals from the equipments were received and processed. This system has been tested, and one practical application example of the system was given.
Design of Vehicle-Mounted Solar Photovoltaic Panels System that Change Orientation with the Light
Authors: Lei Juan , Wu Hong Xia
Published: October 2014

Along with the lack gradually of fossil energy,people began to pay attention to the using of solar energy that easy to obtain and no pollution. Today,a lot of vehicle-mounted systems have begin to use solar photovoltaic panels.But with the driving of vehicle, photovoltaic panels often can’t face to the sun ,unable to get enough direct sunlight. In order to change the fact,writer designed a new system.In this system, we use ambient light detection module and MCU to locate the sun,then MCU controls two motors to make the photovoltaic panel change its orientation,so vehicle-mounted solar photovoltaic panel can change orientation automatically with the light.
Research on the Modeling of Hydraulic Turbine Governing System
Authors: Wu Hong Xia , Wan Li Li
Published: October 2014

The turbine prime mover and its control system have a significant impact on the dynamic stability and long-term stability of power system. On calculation of power system stability, the calculation results have great difference when using different model and parameters of prime mover and its speed governor control system. We can choose the mathematical models and parameters which can reflect the actual running status of equipment in order to make the calculation result is true and reliable. This paper takes a hydropower station as an example, determines the mathematical model and the parameter which can be used for power system stability calculation through the adoption of modeling, parameter identification and testing methods to its prime mover, excitation system and governor system.
Design of Testing & Identification System for Recovery Material of Launch Control Device of Certain Missile
Authors: Xue Xue Dong , Cheng Xu De , Xu Bing , Zheng Yuan , Liu Wei
Published: October 2014

This article presents a method for testing and identification of a recovery material of certain missile, systematically analyzes the diagnostic approach and technology of PCB faults, expounds in detail design concept of the system, sets forth the solution using C8051F020 chip as microprocessor and testing of analog and digital I/O with built-in converter, contrives polarity discrimination circuit, provides software design process and main program by means of design thinking of modularized software, which help increasing program reliability and lowering development cost. The experimentation proves that this system is able to precisely position the faulty module of PCB to be identified, as well as make correct and reasonable opinion for maintenance. The design method and concept of this article is of significant value for reference in the research and development of similar testing and identification system.
Digital Controller Design Research Based on Series Compensation
Authors: Wu Yu Chuan , Gao Xu Zheng Yan , Ma Shuang Bao
Published: October 2014

By presetting correcting device transfer function D(z), this paper puts forward series compensation design approach of minimum beat system. Compared with tradition design method, this way is much simpler and easier.
Analysis about Drawing Broken of SWRH 72A High Carbon Steel
Authors: Chen Min , Dong Zhong Qi , Chen Rui , Guan Xin , Yuan Jian Lu , Wang Chen
Published: October 2014

It is introduced several types of broken of SWRH72A high-carbon steel in drawing, analyzed the cause. The broken situation gets improved by adopting somemeasures: improving surface quality, reduce C segregation, strengthening lubrication.
Based on ARM of AC LED Intelligent Lighting System Design
Authors: Qi Yu Lan
Published: October 2014

based on the infrared detectors, brightness sensor, acoustic sensor sensing device for the lighting area, For signal collection, transform acquisition signal through conversion circuit and send to STM32F103 chip, control signals by microcontroller control drive circuit. According to the characteristics of the AC LED circuit, drive circuit with bidirectional thyristor as a core device design, the system can realize AC LED lighting intelligent open a brightness control. Testing by the actual circuit, circuit work is stable and reliable, has reached the design requirements.
The Design of Control System for Sewage Treatment Based on PLC
Authors: Zhang Zi Sheng , Wang Yi , Wang Li , Cui Jin , Wang Chun Sheng
Published: October 2014

The main aim of this paper is to improve the control efficiency of the sewage treatment system, by analyzing the various control parameters of sewage treatment system and comparing different ways of automatic control, Siemens S7-200 Programmable Logic Controller(PLC) is applied to the system. We designed the control flow charts of coarse grid and dewatering system, compiled the total manual program and automatic control program of aerated grit chamber by using STEP 7-Micro/WIN 32 software, and realized the related equipment automatic control in the sewage treatment system which can run the coarse grid machine that runs for 20 minutes and stops for 2 hours alternately et cetera. The results show that the controllability of sewage treatment system is enhanced and the efficiency is improved.
Dual Objective Multidimensional Parameter Optimization of Cam Curve Based on Improved Ant Colony Algorithm
Authors: He Zhen Jun , Xu Peng , Liao Jiang Xiao
Published: October 2014

By applying improved ant colony algorithm, this paper analyzed multi-objective design problem in optimal design of cam mechanism profile curve, which were then transformed into TSP problem, that is, multi-objective function minimization problem into TSP shortest path searching problem. For the multiple complex variables and target weight parameters in design, a concept of multidimensional space node in ant colony optimization path was proposed, converting multi-objective function with weight coefficient into a multidimensional space nodes (city).At the same time, improved ant colony algorithm, combined with genetic algorithm, was used to avoid optimization calculation falling into a locally optimal solution. Exemplified by dual objective function in cam mechanism profile curve design, this paper solved optimal value problem of dual objective optimization design involving the biggest fullness coefficient and minimum abrasion quantity of variable weight coefficient under the three-dimensional parameters n, m and w.
A Simaplied Adaptive Kalman Filtering Algorithm
Authors: Bo Lei , Zhu Xin Yan
Published: October 2014

The adaptive Kalman filtering algorithm was adopted in the online estimate of navigation state of unmanned aerial vehicle (UAV) as the simplified model often used. At the moment, the alogorithms those usually applied in this territory are not perfect. Analysed the adaptive Kalman filtering based on Maximum-Likelihood Estimation and Sage-Husa Kalman filtering, take advantage the characteristics of residue, choose the estimation windows, a simplified adaptive Kalman filtering algorithm was gived.
A Hierarchical Feature Selection Method Based on Classification Tree for HGU Fault Diagnosis
Authors: Chen Xiao Yue , Zhou Jian Zhong , Xu Xiao Min , Zhang Yong Chuan
Published: October 2014

Fault diagnosis is very important to ensure the safe operation of hydraulic generator units (HGU). Because of the complexity of HGU, the vast amounts of measured data and the redundant information, the accuracy and instantaneity of fault diagnosis are severely limited. At present, feature selection technique is an effective method to break through this bottleneck. According to the specific characteristics of HGU faults, this paper puts forward a hierarchical feature selection method based on classification tree (HFSMCT). HFSMCT selects the most effective feature for each branch node through filtering evaluation criteria and heuristic search strategy, and all the selected features constitute the final feature set. Moreover, HFSMCT is easy to design and implement, and it is very prominent in computational efficiency and accuracy. The simulation results also prove that HFSMCT is very suitable for HGU fault diagnosis.
Informo-Dynamics Functionals in the Study of Fields of Anisotropy of a Microrelief Spinning Tapes
Authors: Frolov A.M. , Kraynova G.S. , Dolzhikov S.V.
Published: October 2014

Electron-microscopic images of interfaces of fast-quenched alloys Fe70Cr15B15, obtained under different regimes of spinning, by using Fraunhofer diffraction patterns and constant-frequency diagrams, had been studied during our work. We applied methods of informo-dynamics at the level of building functionals: energetic U[R(v,α)], responsible for ordering, and entropy H[R(v,α)], characterizing the degree of disorder morpho-inhomogeneties distributions. As additional features for the distribution of inhomogeneities for free and contact tapes surfaces, inform-dynamics potentials are used as tools of spinning process interpretation.
Study on Novice Drivers' Fixation Features under Different Car-Following Risk Levels
Authors: Zhang Meng Hang , Jiang Zu Hua , Zhang Qian
Published: October 2014

Through early interviews 22 common traffic scenes were found and leveled by questionnaires. Six scenes of low-risk, medium risk and high risk were selected and implemented in the simulation software using the software of Creator, Vega, C++, etc. Simulation experiments were conducted to analyze the novice drivers fixation features under different levels of risk based on the designed real car simulation platform. The results showed that both novice and experienced drivers saccade times are more than 3 times greater than the fixation times, suggesting that drivers visual search are found mainly in saccadic movement other than watch movement. In potentially dangerous environment, experience drivers always reduce fixation time and increase saccade time to make early warnings of danger that may arise, while novice drivers saccade time and fixation time are relatively stable. Novice drivers concern more about the dashboard regardless of the level of risk in any scenarios comparatively. In the three levels of risk conditions, novice drivers watching areas are more concentrate, namely, their fixation area mostly focus on some certain areas while ignoring other areas, such as rearview mirror and traffic signals.
Hydraulic Excavator Working Device Simulation Based on Virtual Prototype
Authors: Wu Bao Gui , Yan Shu Fa , Li Shao Ping
Published: October 2014

In order to observe the kinematic characteristic and dynamic characteristic of working state of hydraulic excavator, and aim at the complexity and time consuming of the numerical calculation and field test, the hydraulic excavator working device motion simulation and analysis scheme is put forward. By kinematics simulation, the envelope trajectory of the manipulator and the basic working parameters are got; by dynamics simulation, the force of each hinge in symmetrical and offset loadings is got, and the most hazardous working condition and hinge are determined. Thus provided the basis for strength analysis and design optimization of hydraulic excavator working device. Accordingly, a simulation analysis method to study the dynamics of the working device in hydraulic excavator is provided.
Simulation and Optimization of Productive Process of Titanium Sponge
Authors: Feng Li Li , Liu Yang
Published: October 2014

This thesis makes simulation and calculation of logistics system in the plant of titanium sponge restoring distillation with the software of eM-Plant, analyzes the process of restoring-assembling-distillation, calculates capacity of the original plant, and optimizes the scheme with the software.
Information Application of Production Line in the New Energy Automobile Based on RFID
Authors: Ruan Xian Jing
Published: October 2014

At present, the uneven in the degree of new energy automotive industry informatization, although all have set up their own ERP system, but each enterprise information system lack of coordination, information isolated island in serious condition, and the degree of information is serious inconsistent. But each enterprise’s investment in informatization construction is long-term, very strong desire for urgently establish recognition system. This paper analyses the basic principle and the classification of RFID system, discusses the application of RFID in the new energy automotive production line, studies the problems and countermeasures faced by RFID technology.
Reliability Assessment for Axle Box Spring of EMU Based on the Actual Operation Data
Authors: Ma Zhe , Luo Min , Lu Zheng Gang
Published: October 2014

Two-parameter Weibull-Distributing estimation method is presented to assess the life and the reliability of the axle box spring in the Electric Multiple Units (EMU) bogie. It provides a practical method for quantitative assessment of the reliability. This method can be verified by the operation of the new EMU running in the future. Meanwhile, as it is based on the actual operation data, the conclusion of the assessment is very valuable to the EMU safety.
Research on Mobile Mechanical Products of Recycling Method
Authors: Lou Xi Yin
Published: October 2014

How to make discarded mobile mechanical product implement material and components reuse and recycling economical in its all 1ife was the focus of green design. Aiming at the problems of the traditional design which is not considering recycling resources and the influences to the environment after the end of life of the productions, the concept and content of green design for recycling was introduced, in addition, the tactic of green design for recycling was included. At last, the method of realizing the mobile mechanical productions recycling is pointed out.
Hydraulic Diameter of Compact Design Tubes with Small Diameter
Authors: Kubín Milan , Hirš Jiří
Published: October 2014

The contribution is aimed on hydraulic diameter of Compact Design Tubes with the small diameter. First part of contribution is focused on calculation of the hydraulic pipe diameter by contemporary way for technical use. Second part of contribution is aimed on Compact Design Tubes with the small diameter and compared with typical smooth pipes. Results of this study confirm general fact, that the inner/outer hydraulic diameter of Compact Design Tubes is different from the hydraulic diameter of typical smooth pipe.
Behavior of Point Thermal Bridges from Mechanical Anchoring of Flat Roofs
Authors: Bogárová Markéta
Published: October 2014

Building of structures with high energy performance is topical. To achieve this, it is necessary to have processed besides other thing a detailed design. Thermal bridges have to be eliminated in the design period. Thermal bridges occur as point, linear and 3-dimmensional ones. Mechanical anchoring creates point thermal bridges too. In this paper will be described only the mechanical anchoring to stabilize a flat roof. In the space with anchoring elements there is increased the thermal flux. This flux depends on the composition of the flat roof and kind of anchoring elements. It could lead to the condensation of water vapour in these locations upon attainment of the critical value of surface temperature in the room. This issue has another not-less interesting side. It is behaviour in summer season, when the anchoring conducts heat to the interior of objects. These thermal bridges caused by the anchoring elements described in this article will be modelled with the Ansys software tool.
Long-Term Monitoring of the Effectiveness of a Ground Source Heat Pump Borehole
Authors: Rubinová Olga , Ambrožová Iva , Horák Petr
Published: October 2014

In this study, we evaluate the qualitative thermal performance of a groundwater borehole by monitoring the temperature at the primary (borehole) and secondary (heat pump) sides of a domestic heat pump over three heating seasons between 2010 and 2013. Based on early results, the borehole was extended during the monitoring period in order to increase performance. Our results suggest that the temperature parameters of a borehole do not remain constant and that a borehole’s properties can change significantly over time if the borehole substrate temperature is not given time to regenerate.
Climate Data Processing for Needs of Energy Analysis
Authors: Štaffenová Daniela , Ponechal Radoslav , Ďurica Pavol , Cangár Marek
Published: October 2014

This article describes a part of experimental measurement with assistance of independent weather station. Later on, after the data processing from chosen period of time (1 week in March 2014) measurements are described, graphic processed, interpreted and compared to the results of real meteorological station from SHMÚ. Convenient climatic units are elaborated. The influence of differences in measured data on results of calculations for thermal technical parameters of covering constructions is analysed.
Identification of a Percentage of Engagement of the Bivalent Source of the Earth–Water Type Heat Pump in Heating of the School Using the DDFPM Method
Authors: Tymová Petra , Skotnicova Iveta , Galda Zdenek
Published: October 2014

The calculation based on the DDFPM method will enable us to identify the percentage engagement of the bivalent source in heating of the facilities in the period under consideration and at the location under consideration and we will be able to verify an optimum design for covering the heat loss by the bivalent source of the heat pump.
Heat Supply Optimization
Authors: Komínek Petr
Published: October 2014

Due to the energetic evaluation of buildings, the solutions for optimal heat supply are a problem of current interest. The topicality of this problem is underlined by the European Union requirements for reducing the energetic demands of buildings by the year 2020.From the operational point of view, most of the heating systems seem to be optimal; however, with the use of the results of this detailed analysis it is possible to make even further improvement. The objective is not to supply more heat energy than necessary in order to achieve energy saving. This reduction of heat supply can be achieved by the use of the heat accumulation potential of the building by means of appropriately chosen heating mode. By operation modes are meant a mode with constant heating and a mode with interrupted heating.In this sample case of non-stationary simulation during the interrupted heating regime it is possible to demonstrate the potential saving achieved by the chosen interrupted heating mode. The case study is conducted on a secondary school building. In this project, supported by the specific investigation project on the Faculty of Civil Engineering, I carried out an experiment of an interrupted mode, which was also supported by a theoretical part, in which a non-stationary calculation was used.This contribution suggests the possibility to save energy by optimization of the heat supply. It also presents the difference between a stationary and non-stationary solution to this problem.
Analysis and Quantification of the Influence of Thermal Properties of Building Envelope on the Energy Balance
Authors: Šteffek Libor , Kalánek Jiří , Ostrý Milan
Published: October 2014

Unfortunately, buildings are in practice rarely created as expected during the design process. This may be due to changes in the project during the construction, or to poor implementation. Energy consumption of the real building can be significantly different from that theoretically calculated. User behavior and the physical characteristics of buildings and their systems are the main influences for these deviations.This paper deals with a computer simulation quantifying the influence of changes the thermal parameters of a building’s envelope demands of the future energy. Furthermore, it compares the costs and returns of each alternative solution.
Evaluation of the Thermal Resistance of Structure with Reflective Insulation: Measurement under Non-Stationary Boundary Conditions
Authors: Kalánek Jiří , Šteffek Libor , Ostrý Milan
Published: October 2014

Some manufacturers of reflective insulation products claim that their relatively thin products have the same thermal insulation properties as common insulation with much times higher thickness. This paper deals with experimental measurements of the thermal insulation properties of real structures with reflective insulation. Several experimental sequences were conducted to determine the thermal resistance of the structure. The evaluation was conducted according to the procedures specified in the international standard (ISO 9869 - 1994). Effect of products (based on the reflection of thermal radiation) on the thermal insulation properties of the structure will be determined by evaluation. This effect will be compared with the effects of common insulation (with the intention of reduce of the heat transfer by the conduction).
The Comparison of the Probabilistic Calculation of Course of Temperatures in Peripheral Construction with Actual Measured Data
Authors: Donová Denisa , Zdražilová Naďa
Published: October 2014

This article deals with probabilistic calculation of the behavior of the peripheral wallof the wooden passive house in terms of the temperatures inside the structure in the winter. The probabilistic calculation was made for the actual boundary conditions, ie. actually measured exterior and interior temperature. The results of the probabilistic calculation are ultimately compared with the results of experimental measurements of temperature inside the structure, ie. the actual behavior of the structure.
Integration of Small Wind Energy Source for Optimization of Energy Efficiency in Residential Building
Authors: Ingeli Rastislav , Jankovichová Eva , Tien Minh Nguyen , Čekon Miroslav
Published: October 2014

According to current European strategy and effort, an integration of renewable energy sources (RES) applying of new technologies should have of crucial importance, especially with contribution to the energy efficiency optimizing in buildings. Concurrently, energy performance and energy consumption of the all housing stock is one of the key indicators that represent the adequate utility value of those efforts. The paper focuses on the proposal concept integration of renewable energy for residential house in relation to assessment of the building thermal and energy performance. The proposed concept applying of wind turbines is presented for residential building in terms of standardized target periods. Finally, payback period calculation demonstrates a certain potential of applying small wind turbine as a renewable energy source in residential building of recently given target periods of current technical regulation.
Numerical Simulation of Air Channel in Church Gemerský Jablonec
Authors: Ťažký Ladislav , Sedláková Anna
Published: October 2014

Moisture is a major source of damage in historic solid masonry. Rising damp is a well-known phenomenon around the world and occurs when groundwater flows into the base of a construction and is allowed to rise through the pore structure. From practical experience it is known that many factors may play a role regarding permeability problems in masonry. The amount of possible causes of moisture problems in historic masonry underlines the complexity of this phenomenon. Evaporation is an important factor in rising damp. The surface of an affected wall contains moisture that has risen from the ground and this moisture is then subject to evaporation. The factors controlling evaporation include: temperature, humidity, air movement and surface.
The Windows in the Modular Structure - Air Tightness and Quality of Installation Diagnostics
Authors: Oravec Pavel , Hrubá Barbora , Peřina Zdeněk
Published: October 2014

Renewal windows and doors in residential buildings is a big trend at present. On windows, as products, a number of strict requirements that are fulfilled during laboratory testing are placed. What is the real condition after installation in the construction The subject of this paper is the assessment of the tightness of replaced windows and doors in apartment situated in a prefabricated apartment building. For the diagnosis measuring devices Blower Door was used. At the same time scanning by infrared thermocamera was done. Critical points of leakage were detected. In the conclusion possibilities of solving leading to ensuring the required tightness are described.