bluuebunny/crossref_metadata_2025 huggingface dataset:
Compressive Strength of Cement Mortar Using Sebha Clay, Treated by Sonication Method
Authors: Aboubakar Mohamed , Ganjian Eshmaiel , Sadeghi-Pouya Homayoon , Akash A.M. , Vinatoru Mircea
Published: August 2013

Clay as natural pozzolan is found in the north of the city of Sebha, Libya. Sebha clay is relatively high in silica, and its physical and chemical properties could be referred to as ASTM C618 class N. Sonication treatment is carried out and the treated Sebha clay is used as a mineral admixture in the Portland cement mortar. Horn method 20 kHz frequencies with different powers and different times are used in the Sonication treated. The particle size distributions (PSD) and Scanning Electron Microscope (SEM) imaging are used to understand the mechanism of pozzolanic improvement of the Sebha clay after treatment by sonication. This paper shows the physical and chemical properties of sonication treat Sebha clay. The effect of magnitude of sonic power on pozzolanic activity of treated kaolin is investigated. The main aim of the present research is to study the strength characteristics of cement mortar using Sebha natural clay after sonication is treated as a partial replacement of ordinary Portland cement OPC. The parameters are investigated, including compressive strengths .The results show enhancement in particle size and pozzolanic activity of treated kaolin, with increase in sonic power and in the time.
Probabilistic Lifetime Assessment of Prestressed Concrete Structures Exposed to Chloride Environment
Authors: Lu Chun Hua , Li Hui
Published: August 2013

In order to study the durability behavior of marine prestressed concrete structures exposed to chloride environment, the structural service life is defined as the corrosion initiation of prestressing steel bars. For the chloride ingress in prestressed concrete, a calculated model used to predict the lifetime is developed. Based on the definition of durability limit state, a probabilistic lifetime model and its time-dependent reliability analytical method are proposed by considering the random natures of influencing factors. Then, the probabilistic lifetime prediction models are applied to a PC bridge located in Hangzhou Bay with Monte Carlo simulation. It is found that the time to corrosion initiation t0 follows a lognormal distribution. With the permitted failure probability of 5.0%, it is also observed that the structural durability lifetimes are 25.6, 107.4 and 224.2 years for c=40mm, c=60mm and c=80mm, respectively.
Fatigue Crack Growth of Cold Worked 304L Stainless Steel in Gaseous Hydrogen
Authors: Chen T.C. , Hsieh C.T. , Tsay L.W.
Published: August 2013

The fatigue crack growth behaviors of cold worked 304L stainless steel (SS) in air and gaseous hydrogen were evaluated, and further compared with the base plate. Cold rolling caused a rise in surface hardness and induced austenite to martensite transformation of 304L SS. Despite of testing environment, the fatigue crack growth rate (FCGR) of the cold worked specimen was higher than that of the base metal. Furthermore, both kinds of specimens were susceptible to hydrogen-accelerated crack growth. Mainly quasi-cleavage fracture related with the strain-induced martensite together with separation along twin boundaries accounted for the accelerated crack growth of the specimens in hydrogen.
Paraffin Wax Powder Production by Ultrasonic Atomization
Authors: Sungkhaphaitoon Phairote , Sangsai Nattinee , Wisutmethangoon Sirikul , Plookphol Thawatchai
Published: August 2013

This work was aimed to study wax powder production from the paraffin melt by using ultrasonic atomization process. Effects of atomization operating parameters: melt temperature, melt flow rate and ultrasonic vibration amplitude on particle size distribution, median particle size, production yield and morphology of the atomized paraffin wax powder were investigated. It was evidenced from the experimental results that the particle size distribution of paraffin wax powder was narrowed and the median particle size was decreased with decreasing the melt flow rate, the vibration amplitude and increasing the melt temperature. The production yield of paraffin wax powder tended to increase with decreasing the melt flow rate, the vibration amplitude and increasing the melt temperature. The atomized paraffin wax powder was spherical shape with rough surface and some particles were formed as satellites.
Characterization of Heat-Resistant Geocement Based on Potassium Silica Solution
Authors: Kovářík Tomáš , Kadlec Jaroslav , Pola Michal , Novotný Pavel , Podmanická Stanislava , Čekalová Marcela , Kullová Lucie , Rieger David
Published: August 2013

The aim of this paper is detailed description of synthesis geocement composite material based on K2O-Al2O3-SiO2 system and characterization its thermal properties. The series of analytic tools were used (XRF, XRD, SEM, BET, particle-size distribution) for accurate identification of chemical and physical properties of raw material. Optimum technological prescription was determined and geocement specimens were tested for identification of mechanical and thermal properties. Three series of specimens were heated up to 1000, 1100 and 1230°C and flexural strength was determined. The thermal analysis TMA and DMA were used for characterization of heat-resistant properties. The maximum shrinkage in the range 30-1000°C was for the first run in temperature rate 20°C/min. only 3%. The heating exposure at slower rate (3°C/min.) caused reduction of shrinkage up to 1.5% at 1000°C. Geocement represents attractive thermal properties.
The Regulation of Cellular Adhesion Geometry on Apoptosis of Mesenchymal Stem Cell
Authors: Qiu Jun , Zhuang Zhuo , Huo Bo
Published: August 2013

The mechanical stimulation from extracellular matrix could regulate physiological behavior of cells through the mechanism of mechanotransduction. Previous researches had shown that apoptosis could be regulated by the size of the cell adhesion area.However, the regulation of cell apoptosis by different adhesion shape with the same area is still unclear. This workfocused on the regulation of apoptosis for bone marrow mesenchymal stem cells (MSCs) by different circularity and area of adhesion geometry. We manufactured micro-pattern surface which was suitable for adhesion of MSCs by the technique of micro-contact printing. Three typesof geometry for individual is land of micro-pattern were designed. We adopted terminal-deoxynucleoitidyl transfer as emediated nick end labeling (TUNEL) method to detectcell apoptosis. This research shows that the adhesion geometry which has smaller area and greater circularity will promote apoptosis of MSCs. This indicates that MSCsmay prefer to live on the surface without any restrict. Ourstudies focused on the significantly important problem about interaction between extracellular matrix and physiological behavior of mesenchymal stem cells.
Corrosion Analysis of Copper Tubes in the Exchangers with the Assistance of Atom Absorption Spectroscopy
Authors: Zhang Hao , Lin Yuan Sheng , Zhang Ke Long , Wei Zhi Guo , Wang Wei Wei
Published: August 2013

Copper was always used as the tube materials of heat exchangers because of its superior thermal performance. The working condition of the pipes played an important role in the corrosion process. Copper would be eroded by the dissolve oxygen and carbon dioxide in water. In this manuscript, the corrosion factors inside the heat exchangers were analyzed. Besides, atom absorption spectroscopy (AAS) was introduced and used to detect copper in the working media of two exchangers. Advantages and disadvantages of AAS were discussed.
Irradiation Hardening in Ferritic/Martensitic Steel P92 during Ar-Ions Irradiation at Elevated Temperature
Authors: Zhu Jun , Shen Yin Zhong
Published: August 2013

The irradiation hardening behavior in a commercial ferritic/martensitic steel P92 has been investigated through 250KeV Ar-ions irradiations to a dose of 10dpa at 473, 673 and 973K combined with nanoindentation techniques. The results show that irradiation-induced hardening was observed at the all irradiation temperatures. There appear to have no previous reports of the irradiation-induced hardening at the temperature higher than 873K in ferritic/martensitic steels. Irradiation-induced hardening at elevated temperature of 973K has been found, for the first time, in ferritic/martensitic steel. The irradiation-induced hardening at 973K in the ferritic/martensitic steel P92 may be ascribed to the defects in the steel generated by Ar-ions irradiation.
Casting Mold Designing for Aluminum Alloy Car Holders
Authors: Wang Xue Dong , Lin Jian He , Yu Suo Qing , Ni Li Yong
Published: August 2013

The structure and processing of car holders castings were analyzed. Die-casting molding process scheme was established. The design of mold includes three core-drawing mechanisms. the gate of the gating system was arranged on the casting bottom surface. For economy and die easy maintenance considerations, die-casting machine, mold, and mold standard parts should be standard parts. The designs of mold gating system and non-standard pieces were completed with the aid of PROE. Proved by actual production, the mold operated smoothly, without clamping stagnation, and the production of die castings meet delivery requirements.
Women Ankle Joint Torques Comparison between Bare Foot and High Heel
Authors: Liu Hai Bin , He Zhi Qiang , Yuan Wen Xue , Meng Zhao Li
Published: August 2013

Objective: Research on ankle joint torques of healthy women with high heel compared with bare foot based on Inverse Dynamics. Methods: 12 women were recruited and tested by motion and force system. Kinematical, kinetic and personal segment parameter data were used to compute ankle joint torques and compare the differences between bare foot and high heel.Conclusion: compared with bare foot, It can infer that Soleus and Gastrocnemius access the contraction in advance and keep higher muscle force. Tibia Anterior and Posterior must have to make powerful contraction that could keep the ankle joint with higher torque. Compared with sagital and frontal plane, high heel doesnt change the joint torque in horizontal plane during the whole internal phase, but the fluctuations of torque value may influence the stability during normal level walking.
Quantifying Ordinal Performance of Ant Colony Optimization
Authors: Zhang Zhao Jun , Feng Zu Ren
Published: August 2013

In contrast to many successful applications of ant colony optimization, the theoretical foundation is rather weak. It greatly limits the application in practical problems. One problem, called solution quality evaluation, is how to quantify the performance of the algorithm. It is hardly solved by theoretical methods. Experimental analysis method based on the analysis of search space and characteristic of algorithm itself is proposed in this paper. As algorithm runs, it would produce a large number of feasible solutions. After preprocessing, they were clustered according to distance. Then, good enough set was partitioned by the results of clustering. Last, evaluation result of ordinal performance was got by using relative knowledge of statistics. As the method only uses feasible solution produced by optimization algorithm, it is independent to specific algorithm. Therefore, the proposed method can be adopted by other intelligent optimization algorithms. The method is demonstrated through traveling salesman problem.
Study of Deformation's Indexes of Rolls of Different Designs
Authors: Krivtsova Olga , Viventsov Alexandr , Talmazan Vitaly , Panin Evgeniy , Arbuz Alexandr
Published: August 2013

The elastic deformation of rolls influences the final thickness, thickness variations of strip and distribution of contact stresses. Prospective direction to address the problem of ArcelorMittal Temirtau JSC is the use of new roll materials. Calculating of elastic deformation of four-roll unit of continuous wide-strip hot rolling mill 1700 at ArcelorMittal Temirtau JSC for the actual profile of rolls of the "old", "modern" and "up-to-date" designs. Calculations have showed that during the use of rolls of "up-to-date" design AS1180HH in stands 6-8 bend deflection is reduced by 35-36.8%, and the design of rolls HVS80 in stands 9-12 by 54.5-56.1% that will allow the minimization of strip defect non-flatness at rolling of both narrow and wide strips.
The Design of Innovative Control Technology Integrated Experiment System for Engineering Applications
Authors: Zhao Gang , Zhai Shi Huan
Published: August 2013

The design of innovative control technology integrated experiment system for engineering applications, which completed integrated experiment system design based on modern automation control technology. It contents regular control, intelligent electrical appliances, programmable logic controller (PLC), inverter, industrial control computer automation technology card. This system represents modern control technology in electrical engineering application, and it can complete overview of the teaching experiment such as motor control, electric control technology, programmable control technology, man-machine interface configuration technology, PLC control technology based on personal computer soft logic, computer control technology and industrial control system design, and this work can expand for modern automation technology, a open and development of scientific research platform.
Evaluating System for Direct Purchasing Exchange of Major Power Users
Authors: Liu Dun Nan , Luo Chao Chun , Chen Qing Qi
Published: August 2013

This paper Research on the Intelligent Optimization Operating Modeling of Pumped Storage Power Station in Hunan Power Grid. First it introduces the characteristics of Hunan power grid and analysis the practical requirement of dispatching. Then it brings forward the intelligent optimization model and set up running model for pumped storage power station of Hei Mi-feng. At last, it introduces the application of pumped storage power station in Hunan power grid and proves the effectiveness of the optimization models.
Investigation of Micro Cutting Tool for Diffractive Optical Elements Using FEM Analysis
Authors: Baek Seung Yub
Published: August 2013

Diffractive optical elements (DOE) can be used to simplify optical systems such as lightening its mass, reducing elements numbers and so on. Single-crystal diamond is considered as the preferred tool materials in ultra-precision and nanometer-scale cutting operation. Due to the well known and exceptional difficulty in shaping, the fabrication of diamond cutting tools requires special processing method. As a highly efficient and cost-effective solution, the mechanical lapping process has been extensively applied in tool-making industry. In this paper, the key enabling technologies to design and fabricate the diamond-cutting tools for ultra-precision and submicronic machining are presented and reviewed. The paper describes the shape of micro cutting tool that is based on the finite element method of calculation of relief angle and rake angle.
The Study of Degaussing Technology for Underwater Vehicle
Authors: Zhang Yang , Kang Chong
Published: August 2013

The underwater vehicle is mainly made of ferromagnetic material, the sensor measured except magnetic field, besides magnetic field that the vehicle of the inherent hard magnetic and soft magnetic materials produce and vehicle magnetic fields produced in mechanical and electrical equipment. At the same time, the precision of the geomagnetic measurements will be affected by sensor manufacturing error and installation error factors. Therefore, how to extract the magnetic field from complex environment is a real time measurement of a difficult problem. In this paper, it is based on soft compensation. The magnetic survey experiment that underwater carrier rotates 360 degrees underwater has been done on this basis, and the effect of underwater carrier on cesium magnetometer in different heading is analyzed. The degaussing algorithm for own magnetic field of carrier is obtained and the real value of underwater magnetic field can be restored. It is the solid foundation of high precision underwater geomagnetic navigation and establishing the underwater geomagnetic map.
Detection of Microbubbles Using the Hough Transform
Authors: Mitani Yoshihiro , Oki Toshitaka
Published: August 2013

The microbubble has been widely used and shown to be effective in various fields. Therefore, there is an importance of measuring accurately its size by image processing techniques. In this paper, we propose a detection method of microbubbles by the approach based on the Hough transform. Experimental results show only 4.49% of the average error rate of the undetected microbubbles and incorrectly detected ones. This low percentage of the error rate shows the effectiveness of the proposed method.
Analysis and Calculation of Tracked Vehicle Steering-Load Based on Conditions of Tracks' Slip
Authors: Wang Hong Yan , Li Tong Fei , Wang Tao , Rui Qiang , Gai Jiang Tao , Zhou Guang Ming , Yuan Yi
Published: August 2013

This paper presents systematic calculation about steering loads, taking both the tracks slip and track-width into account. We can deduce propelling force, braking force and steering resistance torque in an algorithmic model on the assumption of uniform pressure distribution and concentrated ground-contact-load distribution in steering process. The result shows that, propelling force, braking force and steering resistance torque can be computed on a simple model of considered tracks' slip and disregarded track-width when track-width is considered. Propelling force and brake force lean to the bodys longitudinal geometrical centerline, while offsets can be ignored relative to track-width.
8-Node Multi-Resolution Solid Element Formulation
Authors: Xia Yi Ming
Published: August 2013

An 8-node multi-resolution solid element is proposed in this paper. The new multi-resolution analysis (MRA) framework is formulated out of a mutually nesting displacement subspace sequence, whose basis functions are constructed of scaling and shifting on space domain of a basic isoparametric node extended shape function. The basic node extended shape functions are constructed from shifting to other seven quadrants around a specific node of a basic element in one quadrant and joining the corresponding node shape functions of eight elements at the specific node. The MRA endows the proposed element with the resolution level to adjust structural analysis accuracy. The node extended shape functions make all the node-related sub-elements connect together at the nodes as a whole as the initial proposed element in resolution level adjusting. As a result, the resolution level adjusting for the proposed element method is more rationally, easily and efficiently to be implemented than the meshing or re-meshing for the conventional mono-resolution solid element method. The multi-resolution solid element is more adapted to dealing with the accurate computation of structural problems.
Numerical Analysis on the Expanding Process of Expandable Casing and Contact Evaluation of its Threaded Connection
Authors: Shen Xin Pu , Shen Guo Yang
Published: August 2013

A detailed analysis of the expansion process will not only provide proper estimates for processing accuracy, but will also provide critical information needed to properly design the driving force required to perform the expansion process. Furthermore, accurate analysis of the contact of the threaded connection is necessary for estimating the sealing capacity of an expandable casing section after expansion. The 3D Finite Element Method has been used to numerically simulate the expansion process fora given expandable casing section. The principal results obtained from this numerical analysis include: 1) maximum value and distribution of equivalent plastic strain after expansion within the casing, 2) deformed casing shape, 3) maximum value and distribution of contact force at contact surface between pin thread and box thread, and 4) variation in values of the driving force of the mandrel cone during the expansion process.
CO2 Emission Reduction through a Sustainable Local Suppliers Network of Raw Materials. Focus on a Delicatessen Shop
Authors: Marino Gian Paolo
Published: August 2013

Global warming, CO2 emissions, depletion of raw materials, climate change, etc. represents the most pressing issues to be solved for the whole world community. Nowadays, through a systemic planned management is possible to improve, albeit in part, environmental criticisms in particular by acting on the efficiency of logistics flows of materials (input) of business processes. The positive benefits of systemic acting/thinking/designing are given substance thanks to a significant reduction of logistics costs, decrease of CO2 emissions and diminution of unnecessary movement of goods from large distances (which cause, among other things, the wastage of non-renewable energy resources), a greater traceability of materials and packaging components and their suppliers, as well as a higher quality of the entire supply-chain. The systemic methodology (here presented via a specific case study: an Italian delicatessen shop) promotes precisely this kind of management by creating synergistic and territorial clusters of small/medium enterprises (SMEs) in which local companies/suppliers, geographically close one another, work together to achieve economic and environmental benefits both immediate and tangible. In the end, by putting into practice the systemic methodology, it is also fostered the best use of resources already on site and the promotion of the local economy by exploiting territorial potentialities.
Epidemic Spreading with Feedback Mechanism and Time Delay under Migration in Scale-Free Networks
Authors: Li Tao , Wang Yuan Mei
Published: August 2013

Taking into account the heterogeneity of the underlying networks, an epidemic model with feedback-mechanism, time delay and migrations of individuals on scale-free networks is presented. First, the epidemic dynamics is analyzed via the mean field theory. The spreading critical threshold and equilibriums are derived. The existence of endemic equilibrium is determined by the spreading threshold. Then, the influences of feedback-mechanism, time delay, migrations of individuals and the heterogeneity of the scale-free networks on the spreading threshold and the epidemic steady-state are studied in detail. Numerical simulations are presented to illustrate the results with the theoretical analysis.
The Effect of Belly-Flap on Aerodynamic Performance of Blended Wing Body Civil Aircraft
Authors: Cai Chen Fang , Qin Yong Ming , Wu Jiang Hao
Published: August 2013

The effect of Belly-flap on aerodynamic performance of BWB civil aircraft are investigated in take-off and landing by computational fluid dynamics. And the overload of BWB with Belly-flap also is calculated in the same flight condition. Six parameters are discussed as design parameters of the Belly flap. It is shown that the proper combination of design parameters of Belly-flap can increase the maximum of lift and reduce the angle of attack and nose down moment to improve the flight safety in take-off and landing. When the aircraft with Belly-flap encounters the gust, the maximum overload is very close to 2.5 which are requested by FAR. It is suggested the optimized design of Belly-flap should be done if the Belly-flap is applied in BWB civil aircraft.
Study on the Obstruction Effect for a Large Explosion Shock Wave Tube Used the Ideal Nozzle Theory
Authors: Wang Chao Cheng , Ren Hui Qi , Wang Hai Lu
Published: August 2013

This paper presents a calculation on the obstruction effects for the given large explosion shock wave tube using the ideal nozzle the theory. The relationship among Mach number, Mach number ratio, dynamic pressure ratio in the nozzle throat and blocking area ratio are established according to the fundamental equations of one-dimensional steady flow, which can be taken as the reference of blocking limit design.
Calculation of Gas-Dynamic Impact of the Active Shielding Gas on the Electrode Metal Drop in Gas Jet Shielded Welding
Authors: Chinakhov D.A.
Published: August 2013

A combination of various factors and phenomena determines the quality of the welded joints. The basic role in setting the properties of the welded joints belongs to the processes taking place in the drop of the melted electrode metal. The paper considers the influence and vector components of the basic forces on the melted metal drop in gas jet shielded welding a moment before the drop transfers from the electrode to the weld pool. Methods of calculating the force exerted by a shielding gas jet on the drop of the electrode metal and subject to its dissociation are offered. The frequency and stability of drop transfer to the weld pool increase with the growth of the shielding gas impact force on the electrode metal drop in double jet gas shielding.
Organizing Automated Ted Dialogue on the Competitiveness of Science-Intensive Products
Authors: Tashchiyan G.O.
Published: August 2013

Organizing automated dialogue on the competitiveness of science-intensive products is based on the competence level of teams of independent experts
Fault Diagnosis Technology of Equipment System
Authors: Hu Hao , Yan Ying Min
Published: August 2013

With the development of computer technology, the development of artificial intelligence technology, diagnostic techniques to change rapidly in the intelligent stage of development, this paper will mainly based on artificial intelligent fault diagnosis methods are described, mainly the application of BP network in fault diagnosis. And application principle to design a user-friendly display system. Make diagnosis data clearly show on the panel, and at the same time show the fault type and other necessary data. Then the bus data tracking, were analyzed. The system for a new system has complex lines, the number of components and types of features, can quickly identify the fault location, allowing the system to normal operation.
Algorithm and Simulation of the Feature Extraction for Rotating Machinery Signal in Fault Status
Authors: Qi Jun , Fu Xiao Lan
Published: August 2013

The nonlinear feature of the rotating machinery signal in fault situation was extracted and researched based on the collected the vibration signal. And the extraction algorithm was researched. On the basis of the phase space reconstitution the recurrence plot (RP) algorithm was researched with the nonlinear time series analysis method. The inner feature of the recurrence plots was analyzed quantitatively, the feature called recurrence rate was extracted finally. Simulation result shows that the extracted feature has the function and property diagnosis of the machinery faults based on the RP and recurrence quantification analysis (RQA) methods and also with nice engineering application value.
A Fiber-Optic Velocimeter Using Heterodyne Technique
Authors: Zhao Li Li , Liu Jing , Chen Da Chuan , Li Jing , Xu Shuang
Published: August 2013

Optical velocimeter has been an important experimental installation in many labs. In this letter, an improved fiber-optic velocimeter that can be used to measure dynamic velocity of a moving object is described. The key parameters of the system are analysed.
Analysis on Tow-Phase Flow of WJ-4FB Explosion-Proof Scraper Waste Gas Treatment Tank Based on CFD
Authors: Zhang Wei , Zhang Wen Ming , Guo Miao Miao
Published: August 2013

This paper establishes internal thermodynamic model, taking the WJ-4FB explosion-proof scraper waste gas treatment tank as the research object. And establish the gas-liquid two-phase flow simplified model based on CFD. Through the numerical simulation of the gas-liquid two-phase flow transient flow pattern, draw two-phase flow figures and gas content distribution curve .Further analysis of the gas-liquid two-phase flow, this paper obtains initial gas velocity, static level, internal mounting member and other influencing factors. It provides a theoretical basis for the design of the waste gas treatment tank.
Research on the Prediction of Protein Functional Sites Based on the Dimension Reduction Algorithm
Authors: Wang Tong , Pang Yan Xia , Wu Yue Ping , Du Yi
Published: August 2013

Knowing the ProteinRNA interactions often provides useful clues for finding its biological function in a biological system. Dimension reduction method is one of most famous machine learning tools. Some researchers have begun to explore dimension reduction method for computer vision problems. Few such attempts have been made for classification of high-dimensional protein data sets. Here, dimensionality reduction algorithm is introduced to predict the protein-RNA interaction sites. Our jackknife test results indicate that it is very promising to use the dimensionality reduction approaches to cope with complicated problems in biological systems, such as predicting the protein-RNA interaction sites.
Adaptive Genetic Algorithm for Multilayer RBF Network and its Application on Real Function Approximation
Authors: Wang Yan Hui , Zhang Kun
Published: August 2013

With the application of adaptive genetic algorithm to the training of multi-layer RBF networks and the optimization of the hidden layer centers and width values and using regularized least squares method, weight vectors is obtained. Computer simulation shows that the precision of real function approximation by this algorithm is much higher than the precision by clustering algorithm for multi-layer RBF networks.
Nonlinear Non-Gaussian Filtering Algorithm Based on Cubature Kalman and Particle Filter
Authors: Kai Zhang , Shan Gan Lin
Published: August 2013

To resolve the nonlinear non-Gaussian tracking problem effectively, a novel filtering algorithm based on Cubature Kalman Filter (CKF) and Particle Filters (PF) is proposed, which is called Cubature Kalman Particle Filter (CPF). CKF is used to generate the importance density function for PF. It linearizes the nonlinear functions using statistical linear regression method through a set of Gaussian cubature points. It need not compute the Jacobian matrix. Moreover, it makes efficient use of the latest observation information into system state transition density, thus greatly improving the filter performance. The simulation results show that CPF has higher estimation accuracy and less computational load comparing against the widely used Unscented Particle Filter (UPF).
Using GPU and OpenACC to Accelerate the Maze Optimal Routing Algorithm
Authors: Liu Yu , Xiao Yi
Published: August 2013

in order to improve the efficiency of maze optimal routing problem, a GPU acceleration programming model OpenACC is used in this paper. By analyzing an algorithm which solves the maze problem based on ant colony algorithm, we complete the task mapping on the model. Though GPU acceleration, ant colony searching process was changed into parallel matrix operations. To decrease the algorithm accessing overhead and increase operating speed, data were rationally organized and stored for GPU. Experiments of different scale maze matrix show that the parallel algorithm greatly reduces the operation time. Speedup will be increased with the expansion of the matrix size. In our experiments, the maximum speedup is about 6.1. The algorithm can solve larger matrices with a high level of processing performance by adding efficient OpenACC instruction to serial code and organizing the data structure for parallel accessing.
Fast Block Matching Algorithm for Ray Space Data Compression
Authors: Jin Zhi Peng , Fang Yu Yan , Yu Mei
Published: August 2013

in order to improve the efficiency of ray-space data compression, according to the texture characteristics of ray space data, introducing a simple effective method of texture classification, a new fast block matching algorithm based on adaptive template selection is proposed in this paper, for prediction coding of ray space slice sequence. Experimental results show that the proposed algorithm has low-complexity and high-performance characteristics, for different types of ray space slice sequences with strong adaptability.
An Improved Algorithm Based on AC-BM Algorithm
Authors: Xiao Shi Song , Wang Ao Lin , Feng Hui
Published: August 2013

The pattern matching algorithm is the mainstream technology in the instruction detection system, and therefore as a pattern-matching methods core string matching algorithm directly affect an intrusion detection system performance and efficiency. So based on the discussions of the most fashionable pattern matching algorithms at present, an improved algorithm of AC-BM is presented. From the experiments in the Snort ,it is concluded that the improved algorithm of the performance and efficiency is higher than AC-BM algorithm.
TrapAB: A New Position Search Algorithm in Chinese Chess Computer Game
Authors: Fang Jian , Chi Jian , Jian Hong Yi
Published: August 2013

In this paper, we propose an improved alpha-beta search algorithm, named trappy alpha-beta (simply), for game-tree in order to identify and set the potential traps in the game playing. can be regarded as an extension of the traditional alpha-beta search algorithm which ties to predict when the opponent might make a mistake and select such moves that can most likely lead the an opponent into the trap by comparing the various scores returned through iterative deepening technology. In our experiment, we test the performance of in comparison with three game-tree search algorithms, i.e., min-max, trappy minimax, and alpha-beta, by playing with four testing opponents, which are obtained form a typical Chinese chess computer game program-Xqwizard (http://www.xqbase.com). The comparative results show that our designedcan effectively find and set the traps in the playing with opponents.
An Improved Dijkstras Algorithm Based on Search Strategy
Authors: Huang Yi Zhen , Yi Qing Ming , Shi Min
Published: August 2013

An improved Dijkstras shortest path algorithm based on search strategy is proposed in this paper. In order to solve the defects of the conventional algorithm, such as large redundancy of space and time, the proposed algorithm introduces a constraint function with weighted value ω for searching each position in the state space to guide the search forward to expected direction. Meanwhile, according to different complexity of map information, the weighted value ω can be flexibly changed to make the constraint function more reasonable to effectively improve the search efficiency. Experimental result shows that the number of nodes on search path and computation time is obviously reduced, and the improved algorithm can be fast to search out the goal nodes.
The Algorithm Research on Adaptive Tooth Height Modeling Modification Based on PRO-E
Authors: Li Tian Li , He Yi , Ge Ri Bo
Published: August 2013

Three-dimensional CAD system is designed by using PRO-E tools. In particular, gear model has been widely used. The usual design philosophy is to perform parametric modeling based on different gears, find the relationship between different parameters, make use of restrictive relationship between different parameters, and complete its modeling process. In this paper, on the basis of this concept, the amount of modification is adaptively determined according to the actual conditions of the operational test situation in actual working conditions, and model modification lengths are optimized in which the amount of model modifications can all be allocated in the active or passive wheel sprocket teeth, and can also be modified both in active and passive wheel. Model modifications are done only in double tooth meshing zone and the gradually open lines in single tooth meshing zone are not modified to ultimately achieve the purpose of gear model optimizing.
Application of a Improved C4.5 Algorithm in Performance Analysis
Authors: Gao Wu Shi , Tang Wei Fang , Wang Xin Gang
Published: August 2013

The application of data mining technology in education, finding the hidden, useful information from a large number of data, will contribute to the reform and development of education. This article presents an improved C4.5 algorithm, which only use simple add, subtract, multiply and divide operations instead of the logarithm of original C4.5 algorithm. This algorithm greatly improves the operation speed and the decision tree generation efficiency, and its application to the analysis of students' achievement, implied to identify the factors affecting the performance, promotes the improvement of teaching quality.
Employing Generalized Cylindrical Helicoid Tube to Smoothly Blending Tubes Whose Axes are Non-Coplanar
Authors: Wang Han , Bai Gen Zhu
Published: August 2013

Given two tubes with non-coplanar axes whose sections are circle, we acquire that axes of the tubes can be smoothly blent by cylindrical helix. In this situation, the paper proposes a new method to build the blending surface by generalized cylindrical helicoid tube. Meantime, we obtain smoothly blending parameter surface.
Three-Dimensional Digital Design for Osteotomy in the Treatment of Congenital Hemivertebra
Authors: Ding Huan Wen , Yu Guang Wen , Tu Qiang , Shen Jian Jian , Wang Ying Jun
Published: August 2013

To establish a new three-dimensional (3D) digital design method for osteotomy and assess its application value in the surgical treatment of hemivertebrae. Preoperative 3D digital designs for osteotomy of the hemivertebrae were performed, which included computer simulation of the osteotomy and the internal fixation process, and computer-assisted design (CAD) of the templates for osteotomy of the hemivertebrae, pedicle screw positioning, and internal fixation rods. Template-guided osteotomy of the hemivertebrae plus pedicle screw and rod internal fixation were accurately implemented. The preoperative use of this new computer-aided 3D digitized and paperless surgical design can improve the safety, accuracy, and operative time for osteotomy in the treatment of hemivertebrae.
The Computer Virtual Reality Technology in the Application of Sports Training
Authors: Chang Yan Jun
Published: August 2013

Virtual reality technology with the help of computer hardware and software resources to create and experience the virtual world integration technology can realize the dynamic simulation of the real world,and the dynamic environment to the users attitude and language command could make a real-time response, making the user and the simulation environment to build up a real-time interactive relationship. With the Key parameters acquisition from sports technology and the quantification of technology action , we puts forward the application methods of virtual reality technology in the diagnosis the steps of Virtual reality technology :Calibration system posting signs to the tester Motion tracks capture the analysis of Collection of data.Discuss the virtual reality technologys effect and composition in sports.
Technical Research for Undocking Scheme on the Horizontal Slipway for Towing the 15,000 Ton Launching Weight Bulk-Carrier
Authors: Huang Ya Nan , Liu Da Lu , Sun Feng Sheng , Wang Yu , Gao Ming Xing
Published: August 2013

When comparing with ship construction within newly-built docks or on tilting slipways, ship constructing on the flat earth method can be said to be a new ship-building technique by which ship is built on a platform and launched with the aid of floating-dock or barge. Some obvious advantages of this technique are such as less investment in basic facilities, low production cost, high production efficiency, wide applicability of ship types, ability to overcome the bottle-neck effect of berths and docks.
In this paper, a bulk-carrier being taken as an example, the design of launching processing scheme on the horizontal shipway includes calculation of launching weight and determination of hoisting force during the whole towing period. The whole towing process of hull can be divided into three stages, the first is from the static state to the moment of beginning to move, the second is from the initial position of movement to the front of slipway onto which the hull is predicted to be pulled, and the third is from the front of slipway to the designated position on the floating dock. Subsequently, after the hull being sealed and positioned correctly, the floating dock for launching may be towed to deeper water zone and the hull can be buoyed up on the water surface, and the whole launching process can be completed.
From the research, the conclusion is made that the launching technique of this paper is available and feasible. Especially, this paper is the initial application of this method on the 15000t launching ship home and has the epoch-making sense.
Research on Aircraft Sortie Generation Rate Using Multi-Class Closed Queueing Network
Authors: Zheng Mao , Wang Chao , Wang Yu Juan , Huang Sheng
Published: August 2013

To analysis the sortie generation rate (SGR) of carrier-based aircrafts, an analytical method based on closed queueing network was carried out. A multi-class, multi-server non-preemptive (or Head of Line, HOL) closed queueing network model was developed. An approximate method based on reduced work-load assumption and mean value analysis (MVA) iteration was used to gain the performance of the network. As a result, this approximate method can provide the marginal distribution of aircrafts at each service facility of the queueing network.
Research on Learning Beliefs and Strategies of Freshmen's Vocabulary Based on Regression Analysis and Mathematical Statistics
Authors: Zhang Deng Zhi , Quan Bin
Published: August 2013

The teaching goals of higher vocational college English courses require English workers to directly face the problems of students English vocabulary learning. The quantity of vocabulary directly affects the improvement of many language abilities of listening, speaking, reading and writing, and the vocabulary teaching is the basis and pivotal issue of English teaching. This paper firstly analyzes the current situation of vocabulary learning of higher vocational colleges freshmen, and it provides the urgently discussed problem and research methods of vocabulary learning of current higher vocational colleges freshmen. It uses linear regression to discuss and analyze the importance of vocabulary learning, and it has the corresponding empirical study. This paper uses the latest edition SPSS19.0 of the statistical package for social sciences to have statistical analysis of the survey data, and it puts forward the English vocabulary teaching strategy that is suitable for higher vocational colleges. In this way it can cultivate the cognitive thinking ability of students' vocabulary learning to improve the efficiency of learning vocabulary.
A New Q-Learning Based Spectrum Access Strategy
Authors: Zhang Kai , Li Ou , Yang Bai Wei , Liu Yang
Published: August 2013

To optimize the opportunistic spectrum access strategy, a new Q-Learning based spectrum access strategy is proposed. The strategy can lead secondary user to select channels with maximum cumulative reward, and maximize secondary user throughput. From the simulation results, compared with random selection algorithm, the algorithm does not require prior knowledge or prediction models of the channel environment, yet can still select the optimal channel adaptively, improve the secondary user capability and attain to the convergence in short time.
Research on Dynamic Statistics for Spatial Data Access Laws Based on P2P
Authors: Pan Shao Ming , Li Hong , Tang Ge
Published: August 2013

The strategy of hierarchical storage can be adjusted utilizing the access rule of the spatial data, which will significantly improve system performance of spatial data services. The access and distribution rule of the spatial data based on Hotmap and Zipf-like cannot reflect its global information. A dynamic statistics algorithm for the distribution rule of the spatial data based on P2P is proposed in this paper. The service capabilities of the service nodes are calculated in our algorithm. The node agents with good service capabilities are chosen preferentially in the group. At the same time, the size of group is controlled. The experimental results show that the performance of our algorithm can be improved by about 28% compared with the algorithm of random nodes. The algorithm can meet the need of dynamic statistics in large scale distribution environment with high efficiency.
Research on the Personalized Integration Scheme of Web Resource Applicable to Mobile Terminal
Authors: Ran Qing Yun , Song Jia Wei
Published: August 2013

In the "blowout" era of the network resources, a significant amount of redundant network resources have brought a lot of trouble to people. This paper proposes an optimized resource integration scheme in order to properly solve the heterogeneity problem of network resources. In addition, this paper also establishes a connection between isolated resources, meanwhile realizes the flexible application of the scheme between the Internet and mobile Internet by combining the technical advantages of HTML5 (Abstract)
System Parameterized Design of Vegetable and Fruit Solar Greenhouse in Beijing Area
Authors: Guo Yi , Li Zhi Qiang , Shi Jin Chao , Cheng Jing
Published: August 2013

[Purpos Due to the lack of industry standards in the solar greenhouse construction process, this paper has developed a parameterized design system and specified the structure of the vegetable and fruit solar greenhouse in Beijing area. [Metho The design system has been developed taking SolidWorks as a platform and VB as a development tool. [Result Its user interface is simple and friendly and designed results are reliable, which can increase the level of automation in solar greenhouse design process. [Conclusion This is a general-purpose system capable of realizing parameterized modeling of other structures like fruit trees and flowering plants simply through changing the proportionality factor.
Remote Control System of Multimedia Teaching Platform Based on Network Technology
Authors: Niu Zhi Ling , Li Ji Yun
Published: August 2013

A multimedia teaching platform based on network technology with the function of multimedia animation and sound effects was designed and built. For the need of modern teaching work under the condition of information, it was meaningful to construct a multimedia teaching platform with the network on line and multimedia, and the remote control for the remote teaching platform needed to be realized. Then the expense and resources of the education and teaching were saved with the network teaching platform, and also the quality of teaching was improved by the multimedia network teaching platform. The network transmission system was established based on the TCP/IP Protocol and C/S. the remote control and data transmission was realized successfully, and it also can save the training and experiments expenses with this platform. The design and test result shows that the multimedia performance if the platform is very nice. The network test effect shows the performance of remote control and data transmission is stable, the prospect of the platform application is showcased.
The Study on Wireless Internet of Things (IOT) Technology in the Digitizing Oilfield Construction
Authors: Lou Ya Fang , Yuan Zhi Jun , Zhou Shu Jun
Published: August 2013

The wireless IOT technology in the digital oilfield construction, has a very broad application prospects on the data collection, remote monitoring, material management, ground supplies comprehensive information technology and other fields.
A MapReduce Iteration Framework in Local Parallel and Message Synchronization
Authors: Wang Ting , Zhang Hua Liang , Zeng Peng
Published: August 2013

With the development of large-scale distributed computing, Stand-alone operating environment to meet the demand of the time and space overhead of massive data based on. There is more attention to how to design the distributed algorithm for efficient cloud computing environment. The MapReduce model cannot solve the issue. In this paper, the redesign of the computing model of MapReduce, ensure the existing calculation models compatible with the old MapReduce operation. At the same time, the framework used the message synchronization mechanism to implement state data changing interaction tasks in Parallel Layer. Compared to the original MapReduce operation, greatly reduces the processing time of the MapReduce iterative algorithm.