bluuebunny/crossref_metadata_2025 huggingface dataset:
Flexible Integration of Enterprise Resources Planning in the Case of Roumanian Public Reasearch and Development Strategy
Authors: Boşcoianu Mircea , Boscoianu Elena Corina
Published: October 2013

The modern development of research and development (R&D) is critical for Romania, an emerging country with smart people, scientists and entrepreneurs, especially in the actual context after the global crisis. In order to gain the desired performance in fundamental and applied R&D it is necessary to change the actual vision and to understand the importance of long term processes and the role of flexibility and adaptability to the movement of global markets. A new strategy for research and development (R&D) in Romania is necessary in the actual context, because it is very difficult to obtain the critical mass of resources and the processes of tranformation are difficult in the case of Romania. This research is also important because R&D is based on public funds and public organizations are typical isolated, dominated by an organizational fragmentation and the low caopability to adopt the technological progress. ERP systems represents a paradigm capable to sustain the Romania R&D strategy also because they represent the central element of the future e-governance architecture. That is why in the case of Romanian R&D strategy the integration of ERP should be consider in a special framework.
Creation of Adaptive-Mechanical Continuously Variable Transmission
Authors: Ivanov Konstantin Samson
Published: October 2013

Recently there were patents on not switched gear continuously variable transmission (CVT) without hydro transformer. In transmission wheelwork with two degrees of freedom and one entrance is used. Adaptive mechanism of CVT provides possibility of output link movement with speed inversely to resistance force at constant input power. However the theoretical description of such transmissions is not convincing enough. Obviously at the basis of creation of adaptive transfers with two degrees of freedom essentially new regularity of mechanics lies. Purpose of present work is to formulate regularities of the mechanics allowing creating the adaptive-mechanical continuously variable transmission. The using of the found regularities will allow creating transmissions with mechanical adaptation to variable technological loading.
Two Dimensional Analysis of Functionally Graded Partial Annular Disk under Radial Thermal Shock Using Hybrid Fourier-Laplace Transform
Authors: Nowruzpour Mehrian Seyed Mohsen , Naei Mohammad Hasan
Published: October 2013

In this paper, a dynamic two dimensional analysis of functionally graded partial annular disk under radial thermal shock is carried out by employing a hybrid Fourier-Laplace transform in conjunction with finite element approach. The material properties of functionally graded partial annular disk are assumed to vary continuously through the radius of the disk in power law form. The governing equations, including the equation of the motion and energy equation are obtained based on Lord-Shulman theory. These two equations are solved simultaneously to obtain the displacement components and temperature distributions. Using Fourier series expansion along circumstantial direction and then Laplace transfer technique to transfer the governing equations into the space domain, where the Galerkin finite element method is employed to obtain the solution in space domain. A simply support boundary condition through circumferential and outer radius edges is assumed. The inverse of Laplace transfer is performed numerically to achieve the final solution in the real time domain. Finally, the results are validated with the known data reported in the literature.
Aluminum Lithium Alloys (Al-Li-Cu-X)-New Generation Material for Aerospace Applications
Authors: Ahmed Bilal , Wu Su Jun
Published: October 2013

Significant advantages in weight reduction and increased strength have place advanced aluminum-lithium alloys at forefront of aerospace materials research. These alloys are being developed to fulfill the ever increasing need for high strength, high properties, light weight and cost effective for aerospace industry. Conventional aluminum alloys has long been in service for aerospace application. The addition of lithium to aluminum improves modulus and decrease density compared to conventional aluminum alloys. Atomic weight of lithium is 7 mass units compared to aluminum 23 mass units, hence there is density reduction of about 3% for each weight percent addition of lithium and about 6% increase in Youngs modulus. In principle weight saving for aerospace structural parts could reach up to 15 %. This paper examines effect of lithium addition on properties, physical metallurgy; various phases developed during processing of these alloys. The addition of Lithium to aluminum form coherent, low density Al3Li (δ׳) precipitates. However the binary alloys have poor mechanical properties which are attributed to strain localization and shearing of soft Al3Li (δ׳) precipitates. This problem has been solved by development of ternary and quaternary alloys containing copper and magnesium. In all aluminum-lithium alloys, small addition of zirconium or scandium is done to improve recrystallization. The new developed aluminum lithium alloys series Al-Li-Cu-X are potential candidate to replace existing conventional alloys in terms of enhanced properties with reduced density.
The Effect of Heart Rate Variability on Exercise Training Post-Cardiac Surgery
Authors: Lin Shu Cheng , Chen Ho Cheng , Lin Shu Wang , Hong Wei Chin , Huang Wei Lun , Lin Hung Tai , Li Hao Lun
Published: October 2013

Purpose: the purpose of this study was to investigate heart rate variability on exercise training post-cardiac surgery. Method: the data collection was from the Chia-yi Christian Hospital Cardiac Surgery implementation of beating heart coronary artery bypass surgery and valve replacement patients. There were a total of 10 patients included in this study. Cardiac patients after discharge from hospital were the participation of exercise training groups (n=5), and no receiving cardiopulmonary physical therapy of patients was the home-based group (n=5). Statistics: Data analysis was conducted using the SPSS statistical software for Windows 20.0. Analysis of covariance (ANCOVA) was used as the statistical method at a significance level (α) of .05. Through statistical analysis and comparison, the results were obtained as below: In HRV time domain portion, SDNN, CV%, results were significant difference. In frequency domain portion, indices such as LF and VHF, results were significant difference. Conclusion: According to the experimental results, the heart rate variability on exercise training better than patients did not participate in sports training after cardiac surgery patient.
Preparation and Characterization of Poly(lactic acid) with Different Molecular Weights by Thermal Hydrolysis
Authors: Yao Jun Yan , Lim Loogn Tak , Li Yu Jie
Published: October 2013

A feasible and effective method of thermal hydrolysis to prepare poly (lactic acid) (PLA) oligomers with different controlled molecular weight from PLA is presented in this paper. The thermal hydrolytic reaction was carried out by immerging PLA resin pellets in boiling distilled water for a certain period of time. Ester groups in PLA chains are hydrolytically degraded in the presence of water and thermal, so PLA oligomers with different molecular weight were prepared. The structures and properties of PLA oligomers were characterized by FT-IR, GPC, DSC, etc. The results showed that thermal hydrolytic reaction could effectively reduce the molecular weight of PLA, which declines with the increase of the thermal hydrolytic reaction time. Meanwhile, the content of terminal hydroxyl group, glass transition temperature, melting point of PLA oligomers prepared from thermal hydrolytic reactions exhibit gradual changes with the extension of the thermal hydrolytic time.
Linear Peristaltic Pump Device Design
Authors: Faraji Ali , Razavi Mahsan , Fatouraee Nasser
Published: October 2013

As medical sciences have progressed and new medicines discovered, the use of more precise and optimal methods of injecting medicinal fluids and more specifically injection in longer time spans has become evident. Peristaltic pump is used in almost all medical supervisions which require precision application of medicines more common in hospitals, elderly housings, clinics and private home patient care taking. This pump may be used for slow liquid medicine injections for the purpose of pain reduction in a wide spectrum of inpatient treatments as well as for tube feeding in patients incapable of eating solid foods. Due to the vital importance of peristaltic pump applications in medical institutions and in respect to previous design efforts done on this machine, the objective of this research is designing multipurpose model of it and preparing necessary plans for its industrial manufacturing using interaction design. In order to obtain the hospital nurses opinions as target population about the application and desired characteristics of a peristaltic pump, a survey research method (questionnaire, personal interview and observation) are applied. Finally, proposed plan for a novel product consists of a pump body taking into consideration the functional; ergonomics as well as aesthetics aspects are represented.
Simulation of the Screw Thread Connection Temperature Field Based on ANSYS
Authors: Sun Fu , Yin Jun Hui , Yao Shi Feng , Liang Guang Ye
Published: October 2013

Friction of screw thread connection will cause temperature rise while projectile unloading, Too high temperature which would cause the combustion will result in significant safety issues, so the temperature field of screw thread connection must be analyzed when the projectile unloading. But friction is a complex process, how to simulate the temperature change accurately is the key link of the whole analysis. In this paper, friction of the screw thread surface in the process of unloading is simulated based on thermal analysis function of ANSYS. According to temperature distribution of the screw thread surface, the highest temperature and position of the highest temperature point is determined. The relationship between temperature and different speed is analyzed, which can provide a theory basis for safely unloading.
Research into Cleaning and Suppression Equipment to Improve Reliability of Hydraulic System
Authors: Wang Shu Hai , Cao Li Jun , Yu Gui Bo , Yang Zheng Hui , Zhi Jian Zhuang
Published: October 2013

Modern weapons are usually power-driven by hydraulic system, The reliability of hydraulic systems restricts the reliability of weapons. The research elaborated in this paper is focused on cleaning and suppression equipment, with the aim of implementing a thorough cleaning and maintaining of hydraulic system pipes and checking the pressure. Pipe cleaning and suppression is an essential step to guarantee the reliability of hydraulic system and the service life of hydraulic parts, thus improving the reliability of weapons.
Experimental Investigation of Homogeneous Charge Compression Ignition Engine of Ethanol and Diesel Blends
Authors: Natarajan S. , Mahalakshmi N.V. , Sundarraj S.
Published: October 2013

This paper deals with the experimental investigation of a Homogeneous Charge Compression Ignition (HCCI) Engine system. The main objective of this research work is to study the effects of a premixed fuel ratio on the performance, combustion characteristics and reduction of oxides of nitrogen and smoke intensity, using the HCCI concept. The engine used for the experiments was of a Kirloskar TAF-I series. The engine is a four stroke, single cylinder air cooled diesel engine, of a rated power of 4.4 kW loaded with an electrical dynamometer. An electronic fuel injection circuit was developed to control the ignition timing and duration of the premixed charge. Ethanol was premixed, and a part injected before ignition, whereas the diesel fuel was injected by the conventional injector directly into the cylinder. The part injected ethanol and direct injected diesel were tested in various proportions, to optimize the operating range, and the same setup was tested with various % of EGR.The obtained results include data plots illustrating the performance, combustion and emission characteristics. The results indicate that the concentration of the oxides of nitrogen species rapidly decreased, and the smoke emissions were reduced simultaneously at 20% Rp and 20% EGR in 75% load and full load conditions.
On the Throughput-Reliability Tradeoff Analysis of Broadcasting Protocol in VANETs
Authors: Li Li Jun , Liu Hong Fei , Ma Bao Hong
Published: October 2013

In this paper, a theoretical analytic model of the broadcasting protocol which has been adopted for vehicular communications is proposed to analysis the relationship between the throughput and the reliability, and to find suitable CW value which can optimize the throughput and reliability of broadcasting protocol, the multi-object optimization Models is proposed to explore how to adjust the Throughput-Reliability Tradeoff. The analysis results show that it is possible to gain an extra level of reliability at the expense of some throughput by adjusting CW.
Node Localization Algorithm Based on DV-HOP in Wireless Sensor Networks
Authors: Zhang Jie , Wang Hong Bin , Qiao Xue Gong , Han Yue Qi
Published: October 2013

Node self-positioning is one of the core technologies in wireless sensor networks and is the premise of many applications. It is significant to achieve highly efficient and reliable node localization for event observation, target tracking and efficient routing. The DV-Hop localization algorithm which is one of the Range-Free algorithms is researched deeply. Firstly, algorithmic process, error sources, and the amount of communication and computing for Traditional DV-Hop algorithm are analyzed. For low positioning accuracy in Conventional DV-Hop localization algorithm, an improved DV-Hop localization algorithm based on estimate of average hop distance, Min-Max and position correction is brought forward. The simulation results show that the improved algorithm can improve the positioning accuracy more effectively without increasing hardware consumption in nodes comparing with conventional DV-Hop algorithm. So it is a practical and effective node localization method in wireless sensor networks.
Design and Application on the Rolling and Coordinate Type Device of Table Tennis
Authors: Yang Min , Zhang Xing Hai
Published: October 2013

In this paper, design the rolling and coordinate type device of table tennis and describe their basic structure, working principle, processing, technical requirements, operation and application to solve the former problems of device and technical practices. With the help of the devices, players can quickly master essentials to make teaching and training significantly enhanced. Such devices have not been reported.
Baseplate of Table Tennis Racket: Allocation for Material Innovation and Playing Methods
Authors: Yang Ming Liang
Published: October 2013

The table tennis racket has played an important role in the development of promoting the table tennis. This paper will analyze the influence of the change of the racket baseplate on the table tenniss technological development, and various requirements on the performance of the racket baseplate by different table tennis batsmanship, and conclude the mutual promoting and influencing relationship between the materials of the baseplate of table tennis racket and the batsmanship, and then to coordinate the baseplates performance and the technology of the table tennis athletic, and to maximize the techniques and tactics levels of the athletic.
Preparation and Actuation of Electro-Active Artificial Muscle Based on Sulfonated SEBS
Authors: Shi Yue , Li Rui Rui , Lian Hui Qin , Cui Xiu Guo , Liu Yang
Published: October 2013

In this study, electro-active artificial muscle was developed based on sulfonated poly (styrene-b-(ethylene-co-butylene)-b-styrene) (S-SEBS). The S-SEBS membrane was prepared by a solution casting method using THF as solvent. The physical properties were tested in terms of ion-exchange capacity, water uptake and linear expansion. Fourier transform infrared (FT-IR) was used to study the composition of S-SEBS. The results showed that the S-SEBS exhibited electro-active property with blocking force about 2.3gf/g.
Synthesis of the Mono-Disperse Magnetic Cross-Linked Composite Micro-Spheres Containing the Functional Group
Authors: Zhao Ji Li , Yin Rong
Published: October 2013

The mono-disperse magnetic cross-linked composite micro-spheres containing carboxyl groups have been prepared by an improving method of emulsion polymerization in this paper. Firstly, Fe3O4 magnetic nanoparticles were synthesized by co-precipitation, and the Fe3O4 magnetic nanoparticles were modified by oleic acid. Secondly, DVB as cross-linker, SDBS as emulsifier and AIBN as initiator, the mono-disperse magnetic cross-linked composite micro-spheres were obtained in aqueous, and consisted of the copolymer of styrene and acrylic acid as shell and the Fe3O4 magnetic nanoparticles as core. The magnetic cross-linked micro-spheres would be the rudiment of the magnetic nanonetwork, and be expected to apply a great deal of fields in the future.
Characterization of a Laccase from White Rot Fungus Cerrena unicolor
Authors: Zhang Bei Bei , Shen Yong Jian , Xu Chang , Li Ying , Jiang Ming Hu
Published: October 2013

Dyes are usually difficult to be decolorized due to their complex chemical structures. In this work, laccase was purified from the white rot fungus Cerrena unicolor to evaluate its application in dye decolorization. SDS-PAGE analysis showed the purified laccase to be a monomeric protein of 63.7 kDa. The optimum pH for the oxidation of 2,2-azinobis-(3-ethylbenzthiaoline-6-sufonic acid) (ABTS) was 2.2 and the optimum temperature was 50°C. The activity of the purified enzyme was strongly inhibited by sodium azide and partially inhibited by cysteine, dithiothreitol. The Km values of the purified laccase for the substrate ABTS, syringaldazine and 2,6-dimethoxyphenol were 0.217, 0.306 and 0.199 mmol/L.
150-212μm Dust Particles on the Reliability of Electrical Contact in Static Conditions
Authors: Yin Quan , Liu Sheng Chun , Xu Liang Jun
Published: October 2013

Dust particles from the air in the electrical contact caused more and more problems. To a large extent reduce the reliability of the system. In order to study the impact of these issues, we need to analyze and discuss the dust particles on contact performance of electrical contact materials. In this paper, under static conditions with 150-212μm of the silica particles analyzed and discussed, represented by the pressure difference, particle size, being suppressed will lead to a different location of the static contact resistance and analysis of particle size of the scope of what the content of easily crushed. Experimental results show that the particle size and the location of the different particles are pressed, will make a change in contact resistance, another analysis gives easily be crushed particle size range is 150-300μm.
Finite Element Analysis for Gear Contact Based on UG and ABAQUS
Authors: Wu Li Mei , Yang Fei
Published: October 2013

According to the cutting theory of involute tooth profile, established an exact three-dimensional parametric model by UG. Used ABAQUS to crate finite element model for gear meshing. After simulated the meshing process, discussed the periodicity of the tooth surface contact stress. Based on the result of finite element analysis, made a comparison of the maximum contact stress between finite element solution and Hertz theoretical solution, analyzed the contact stress distribution on tooth width, and researched the effect of friction factor on contact stress. All that provided some theoretical basis for gear contact strength design.
An Improved Bat Algorithm and its Application in Multiple UCAVs
Authors: Li Yue Guang , Peng Ju Ping
Published: October 2013

Uninhabited Combat Air Vehicles is a complicated global optimum problem. In this paper, according to the characteristics of Uninhabited Combat Air Vehicles, an improved bat algorithm was used to solve Uninhabited Combat Air Vehicles. The algorithm was experimented and the experimental results show that the improved algorithm to be successful in locating multiple solutions and better accuracy. Simulations and results indicate that the improved bat algorithm has better feasibility and validity for solving the multiple UCAV.
Structure Optimization for Hydraulic Press Based on Approximate Model
Authors: Wei Wei
Published: October 2013

A method of structure optimization for hydraulic press is proposed in order to reduce mass while assuring adequate stiffness. Upper beam and lower beam are determined as optimal objects by mass analysis. Key geometric parameters of upper beam and lower beam which have relatively larger impacts on mass and stiffness are extracted as design variables. In order to research relationship between stiffness, mass and design variables, command batch file is built by python language to implement automatic finite element analysis in ABAQUS. Orthogonal experimental design is used to generate samples of design variables. Calculating data are dealed with second order stepwise regression and mathematical model for structure optimization is established by regression equations. The goal of structure optimization is to decrease total mass of hydraulic press while assuring adequate stiffness. Particle swarm optimization is used to solve the mathematical model. The total mass of hydraulic press is decreased by 3.1% and its stiffness is adequate to ensure the forming precision when solving process is finished.
A New Design of Digital Camouflage Spray Device
Authors: Chu Miao , Tian Shao Hui , Pan Xiao Chun
Published: October 2013

The digital camouflage technology is a new camouflage technique of military engineering. It sprays the Mosaic block of different color on the surface after permutation and combination according to certain rules. But in present, the current technology still takes artificial spraying method. This method cant adapt the present need of camouflage technique for military engineering whether spraying effect or spraying efficiency. For this reason, an intelligentized digital camouflage spraying device of cartesian coordinate robot is designed. The study could supply important references for theory research and project implementation of military digital camouflage technology.
Research and Design for High Precision Ultrasonic Distance Measurement System
Authors: Guo Hua , Yu Sheng Wen
Published: October 2013

In this article, discussed the traditional method of ultrasonic distance measurement , analyzed the main factors that restrict to impove the precision, and according to the energy attenuation of ultrasonic transmission, designed a measurement method based on rebuilding the digital signal waveform, this method solved the measurement precision problem caused by the traditional threshold method, the accuracy is no longer affected by the attenuation of ultrasonic energy, achieved the consistency precision in full range, makes the measuring accuracy is nearly one hundred times higher than the threshold method.
Vibration Characteristics Analysis for the Stator of Dynamic Friction Linear Piezoelectric Stack Motors
Authors: Chen Xi Fu , Liang Yu , Huang Wei Qing , Zhou Hai
Published: October 2013

To improve the output performance of piezoelectric linear motors, researches was carried on the vibration characteristic for the stator of dynamic-friction type non-resonant linear piezoelectric motors. By analyzing the construction and working mechanism of the motor, longitudinal vibration model was established for the stator of motor. Then the vibration differential equation of the drive tip was deduced and longitudinal displacement functions were proposed. Further, the prototype was fabricated and investigated by experiments on the longitudinal displacement of drive tip under different excitation conditions. Experiment results proved the vibration characteristic theory of stator that the longitudinal amplitude of drive tip increases with excitation voltage. The maximum amplitude of drive tip is 0.85μm and the output force is 3 N on condition that the operation voltage is 90 V and the frequency is 1.6 kHz. The above studies can provide theoretical basis for performance optimization of motor and for structural optimization of stator.
Time Management Model of Workflow Based on Time Axis
Authors: Deng Ning , Zhu Xiao Dong , Liu Yuan Ning , Li Yan Pu , Chen Ying
Published: October 2013

The goal of workflow system is to guarantee that the right activities are executed and completed within the correct and ideal time periods via automation, moreover, in order to help a company to be sufficiently competitive, the workflow system it adopts should be able to ensure activities are carried out to the maximum extent as possible and to manage several workflow instances at the same time. Hence, sufficient consideration of temporal constraints and efficiency should be taken into the design process of workflow system. This paper proposes a model of workflow control based on time axis which is able to ensure one or more workflows to advance in correct time period efficiently and precisely.
Fuzzy-PID Control Application in Temperature Automation Control System of Tunnel Kiln
Authors: Zhou Ke Liang , He Jian , Tan Qiong
Published: October 2013

Considering the tunnel kiln temperatures characteristics of time varying nonlinear,large inertia and uncertainty, it is hard to establish accurate mathematical model, and affect the adjustment of the control system. Frequency conversion motor adjust the size of the gas and air flow to change the temperature in the system.Conventional PID have the parameter coupling problem,the control speed is slow and the overshoot amount is big.So the paper design a fuzzy PID, combined with the certainly of PID control and the intelligece of the fuzzy control.It makes a effective self-tuning of the PID controlled parameters. Through Matlab simulation experiment, it show the fuzzy PID control can reduce the overshoot time and the overshoot amount ,enhance the stability of the system effectively.
Part Shape Information Acquisition Based on Stereoscopic Vision
Authors: Gu Ji Nan , Chen Si Jie , Shen Bao Guo
Published: October 2013

A clamping robot serving for several NC machines can recognize the best fit in manny blank parts. Forthermore, the shape information acquisition and pose measurment can be achieved by its computer vision system. The key question is that the clamping robot automatively choices the best fit part by statistical result of geometric dimension of all parts. The best fit part is the one that its length and its diameter are mostly proximate to the processing requirement. This choice method can save staff, reduce working allowance, and lessen finished cost. According to the shape information and position information, the robot can confirm the grab order, grab angle and finger joint distance. Firstly, the part image is smoothing by noise reduction technology, secondly, the feature points are extracted. The feature points present the information of the location of the mass center, the dip angle and diameter. Finally, the clamping robot can grab the most fit bar part by means of rotational motion, rectilinear motion, and finger open-close movement when the shape information and location information of the bar part have been confirmed.
Analysis and Design on Cloud Computing Monitoring Framework of Internet Public Opinion
Authors: Li Guo , Zhang Xiao Qing , He Zhong Tang , Ji Tong Kai
Published: October 2013

With the development of Internent, the amount of information on the Internet is huge and updated quickly, which makes public opinion monitoring face enormous challeges in dealing with huge amounts of information and complex data. In the age of cloud computing, these data hids the huge value, which includes scienfitic computing, public information and enterprise applications field and so on. For getting some valued information from these data, we need to monitor these network opinion information. However, there are some shortages in traditional Internet opinion monitoring method, such as lack of powerful ability of data collecting and analysis ability. For solving this problem, a cloud computing framework of Internet opinion monitoring is proposed. The specific method is to make use of the mass data process ability of MapReduce to implement a new network information abtaining method.
Comparison and Assessment of Different Image Registration Algorithms Based on ITK
Authors: Zhou Zhen Huan
Published: October 2013

A lot of image registration algorithms are proposed in recent year, among these algorithms, which one is better or faster than the other can be only validated by experiments. In this paper, ITK (Insight Segmentation and Registration Toolkit) is used for verifying different algorithms as a framework. ITK framework requires the following components: a fixed image, a moving image, a transform, a metric, an interpolator and an optimizer. Dozens of classical algorithms are tested under the same conditions and their experimental results are demonstrated with different metrics, interpolators or optimizers. By comparison of registration time and accuracy, those practical and useful algorithms are selected for developing software in image analysis. These kinds of experiments are very valuable for software engineering, they can shorten the cycle of software development and greatly reduce the development costs.
Distributed Data Aggregation Algorithm in Wireless Sensor Networks
Authors: Li Xian Li , Zhang Jia Wei , Zhang Hai Tao
Published: October 2013

Considering the limited resources and data transmission redundancy of wireless sensor networks, this paper proposes a distributed data aggregation algorithm based on lifting wavelet transform (DDAA-LWT), and carries out the rational design. The algorithm distributes the computing quantity which the lifting wavelet transform requires to all network nodes, eliminates the additional computing and wireless transmission, reduces the information redundancy of network, greatly prolongs the lifecycle of wireless sensor networks. Simulation results demonstrate that the distributed data aggregation algorithm based on lifting wavelet transform (DDAA-LWT) can effectively aggregate the original sensed data and decrease the energy consumption, it significantly outperforms the data aggregation algorithm based on traditional wavelet transform (DAA-WT).
Research on Data Transmission Technology Based on Raptor Code in Wireless Sensor Networks
Authors: Peng Xiao Feng , Yang Yi , Yang Chuan , Wang Kai Li
Published: October 2013

Wireless sensor network is a data centric distributed self-organizing network. The transmission of data is the most important task of it. It is a topic worthy of study that how to ensure the reliability of data transmission in any environment .Fountain codes algorithm is simple, and has no ratio. It is very suitable for coding scheme for Wireless Sensor Networks. This paper mainly studies the Fountain codes of Raptor codes in wireless sensor network data transmission technology, and gives the concrete scheme and implementation ways. The application of this technology can improve the reliability of data transmission and transmission efficiency. It overcome the problems of very large packet error codec technology traditional rate and the decoding success rate.
Quadratic Independent Component Analysis Based on Sparse Component
Authors: Wang Jing Hui , Tang Shu Gang
Published: October 2013

In this paper, a novel signal blind separation using adaptive multi-resolution independent component analysis based on sparse component is presented. This method separates mixed signal based on quadratic function and sparse representation. The quadratic function can be interpreted as the time-frequency function or time-scale function, or other. The sparse expression is the original signal through the dictionary to get their coefficients. Most of the coefficients is very small, close to zero, can greatly save separate computing time. At the same time this method can filter out the noise. The argorithm extends the separate technology from time-frequency domain to sparse mutil-resolution domain. The experimental result showed the method can be effective separation of mixed signals. And it shows that the method is feasible.
Study on Open CNC System Platform Architecture and its Application
Authors: Hui Ji Zhuang , Gao Kai , Ding Xiang
Published: October 2013

On the market today, the hardware and most software of CNC system are not exclusive and incompatible, and the system institutions vary, which makes the control systems of different manufacture relatively independent, closed to each other. In order to break this situation, this paper conducted a project design on the hardware and software of CNC system which is based on PC platform. On the hardware, ultimately determine the NC embedded PC architecture, design and motion control card based on PCI bus; in the aspect of software design, use Windows2000/XP operating system to achieve multitasking real-time CNC control, and design the software in the Visual C++ environment .Using the platform to achieve the application of the laser welding system, the design is proved to be feasible, it also reflects the basic idea of the open architecture.
Models of Choice between Shopping and E-Shopping
Authors: Barone Vincenzo , Crocco Federica , Mongelli Domenico W.E.
Published: October 2013

In the era of the new economy, research on freight transport and logistics in urban areas can not ignore the impact of the internet on society. From the point of view of e-commerce, the Web is joined in the daily life of the Italians not only for the growing opportunities to shop at better conditions than the other channels, but for the enormous possibilities that the Internet provides for those who has time, desire and interest to search the site data and useful information to make more effective shopping for a product or a service. The effects of these changes on the transport demand are manifold: on the one hand, the use of virtual activities replaces a series of physical movements, on the other hand the individual who carries out these activities virtually could use the time saved to perform other tasks or perform another type of movement. No less important are the impact of e-commerce on the distribution, since the online purchasing determine, in a specific area, a number of points to be served with high variability and, therefore, quite different from the default items identified by the traditional commercial structure of that area. In the present work some studies on the effects of e-economy and e-commerce on passenger transport and freight transport are detailed and the processes of acquisition of the database for the development of a behavioral model for simulating consumers choices about e-shopping and shopping in trade are defined. The model allow to predict the effects of new technologies on consumers habits and act on demand, focusing on services that may mark the success of innovative approaches to the management of urban transport. The specifications, calibration and validation of models to choose between e-commerce and physical commerce are presented.
Freight Transport Demand Models for Applications in Urban Areas
Authors: Barone Vincenzo , Crocco Federica , Mongelli Domenico W.E.
Published: October 2013

Nowadays vehicles committed to the distribution of goods in urban areas are a significant load on transport infrastructure in terms of congestion, accidents, noise and air pollution. We can no longer think about intervening through the construction of infrastructure: sooner or later the new infrastructure will be congested, and externalities will increase with traffic growth. It should, however, point to a careful examination of the structural factors of mobility, ie the understanding and reading of demand, rather than focusing exclusively on the offer. Analysis of mobility demand, and therefore trends and characteristics of the entities that actually move and produce mobility, is essential to deal with the best management of a transport system and, at the same time, of a territory. The paper provides a review of freight transport demand models for applications in urban areas. A methodology for evaluating freight transport in medium-sized cities is proposed in order to enable the determination of the quantity of goods handled, distinguished by type, and the number of vehicles used for this purpose. In this paper the focus is on the fruit and vegetable sector and a survey method for an urban area of medium size is illustrated. The data collected made it possible to calibrate models to estimate the demand for freight transport in urban areas.
Research on Absorbing Property of Cement-Based Material Blending with Graphite and Carbon Fibers
Authors: Zhang Yong , Wang Bo , Wang Xiao Hui
Published: October 2013

The absorbing performance have been tested and analyzed by taking cement as matrix, blending material graphite and carbon fibers for absorbing agent trial Sample, in the 8 ~ 18 GHz frequency band, the results indicate that graphite and carbon fibers and composite cement which made of absorbing material has good absorbing property. Blending material absorbing properties of cement-based materials, the impact must be considered together, not the more the better, when blending material exceeding a certain threshold, enhance its ability of wave-transparent enhance while absorbing property will be reduced finally.
Exploration of Rotation Lowering with Building RC Box-Rib Arch Bridge
Authors: Zou Rui Nong , Yang Jie
Published: October 2013

Arch rib construction of Zhenzhu Bridge on the road from Wuchuan to Pengshui in Guizhou uses construction technology of vertical casting in the first place, and then vertical rotation, and the total weight of which is 610t. This paper introduces technical points and process of vertical rotation construction, and has made beneficial exploration and summary of such kind of construction technology.OverviewBridge rotation construction has advantages including saving costs for hoisting and erecting frames, reducing risks of frames losing stability when casting arch rib concrete, convenient, flexible, safe, reliable and good integrated construction operation, structural line type and internal forces are easy to adjust and control, small range requirement of construction site, and low impact on surrounding environment. Bridge rotation construction would have a broad application prospect in the practice of bridge construction, especially in Chinas southwest area with wide distribution of deep groove and dangerous gully, such construction method is more advantageous. Therefore, practice and research on such construction technology are very practical and significant.Ordinary vertical rotation construction is to have low casting or arch rib assembling, and then lift upward to reach the designed location. Concrete arch rib construction of Zhenzhu Bridge on the road from Wuchuan to Pengshui in Guizhou uses the technology of negative-angle vertical rotation construction, vertical casting arch rib, and then lowering rotation with weight of 610t. Such construction technology is used in China for the first time, while current vertical rotation of the same type of RC arch rib in China has the maximum weight. Based on emphasis on introducing construction technology characteristics of this bridge, this paper also includes innovation and beneficial exploration on the new construction technology of negative-angle vertical rotation.
Research of Static Load Testing Program of Reinforced Concrete Truss Scheme
Authors: Xia Ying
Published: October 2013

In order to ensure the safety of the truss, truss structure should be carried out prior to use static loading test for assessing the actual working conditions as well as the truss trusses meet the design. The static load test site carries out the testing work. In this paper loaded static load test program was designed to include load cases and measuring points on the truss static load test a theoretical analysis.
Construction Method of Current Controlling Length of Cement Mixing Pile and CFG Pile for Soft Soil Subgrade
Authors: Zhao Li Cai
Published: October 2013

Passenger railway line of Xiamen-Shenzhen railway has lots of soft-clay sections. Reinforcement schemes of base soft clay include two forms, cement mixing pile and CFG pile. If reinforcement thickness of soft clay is inappropriate, it makes the base of the built subgrade construction settle and deform. The paper uses ammeter to dymatically control the length of cement mixing pile and CFG pile, which not only effectively ensures that all reinforcing pile shafts can enter bearing stratum, but also improves foundation capability and avoids settlement and deformation of foundation.
A Method of Impact Simulation in Permanent Magnetic Field
Authors: Ding Ya Ping , Tong Xiao Yan , Liu Yong Tao , Liao Yong
Published: October 2013

To simulate the impact response of the moving body in the permanent magnetic actuator, this paper takes the magnetic force of the moving body at different positions as one of the input loads for the impact simulation, which avoids the coupling calculation of the magnetic and impact problem. The static and transient analysis of the magnetic field in the permanent magnetic actuator are implemented respectively to compute the magnetic flux density and their relative errors, results show the moving body in this magnetic field exerts little influence on the magnetic intensity and the influence can be neglected. The force of the moving body with respect to its position can be calculated in the static analysis and then be imported into the impact calculation to obtain the velocity and displacement. By comparing these results with the ones from the magneto-mechanical coupling transient analysis, the difference is small which proves the feasibility and accuracy of the proposed method.
Study on the Steel Cord Belt Joint Monitoring Based on Force Displacement Curve
Authors: Zhao Wu
Published: October 2013

This paper, based on an analysis into the approaches, at home and abroad, of the conveyor belt joint monitoring, provides an in-depth investigation into the causes and conditions of the belt conveyor tension overload and fractures, finding that the fractures of the joint are random, and are among the most frequently occurring problems, along with steel-cordbelt conveyor belt deviation, drum slipping, roller life, fire, and the steel-cored belt longitudinal tearing etc Therefore, based on the fact that the joint length can be measured by detecting its tension with an senor, this paper investigates the technology of belt joint monitoring by means of the F-L curve,, so as to provide an early warning. This method the system practice shows that: the technology has good application value in production and application, has the vital significance to the enterprise safety production.
Analysis on the Rotating Mechanics Based on Three-Dimensional Mechanics
Authors: Peng Bo , Liang Li Nan , Lin Jin Jiao
Published: October 2013

Speed is the core elements in table tennis athletics, however speed is lack of strength of the attack and lethality is limited, it is only with the aid of a force and speed of rotation to achieve the kill is the most optimized techniques. From the ping-pong rotating force, to elaborate the table tennis increased rotational mechanics principle and cause analysis, through the analysis of principles, deep space to carry out the table tennis rotating mechanical three-dimensional analysis, which provides a scientific theoretical basis and practical way for the table tennis rotation technique, its techniques can enhance new active exploration.
The Design of the Gas Measurement System Based on the Intelligent Sensor Array
Authors: Li Lu Feng
Published: October 2013

In this paper, a system composed of the intelligent sensor array is designed to measure various kinds of gas. The system is mainly feasible for gas measurement in coal-mines, family environments, and air pollution and so forth. The system mainly consists of sensors, single-chip microcomputers and peripheral circuits. In this paper, the major focus lies on the composition of the system, the hardware system and the software design. Apart from that, experimental tests are conducted.
The Applied Research of Safety Monitoring and Forecasting Technology in the Foundation Pit Supporting Construction
Authors: Yu Zhen Xi
Published: October 2013

With the scale development of our high-rise buildings, together with the development and enhancing of monitoring technology of deep foundation pit supporting construction. Control accuracy is the main part for monitoring technical process in deep foundation pit supporting construction, the requirement of monitoring is higher and higher than before, relevant monitoring method, frock and tools, earthwork type of shipping and downriver way in engineering construction will develop in revolutionary way. In view of above mentioned, this paper try to do researching on monitoring technical process in deep foundation pit supporting construction in our country, hope to supply reference for counterparts.
The Optimized Laying and Example Analysis of Solar Photovoltaic Cells
Authors: Zheng An Man
Published: October 2013

This thesis researches mathematical models and optimization problems of solar photovoltaic cells. According to the defined priority, the arrays of photovoltaic cells on every wall are given. The thesis then identifies the optimal inclination and the optimal direction angle with the help of spherical coordinate system, thereby further optimizing the model. Meanwhile, according to the given data of the problem B of China Undergraduates Mathematical Contest of Higher Education Cup in 2012, the thesis demonstrates example analysis of optimization model of solar photovoltaic architecture.
A Study on the Optimal Proportions of Flag and Fly Ash in Green Concrete
Authors: Zhang Qing Fang
Published: October 2013

C30 concrete has been universally used. To improve its quality, the author of this paper made an experiment so as to obtain the optimal proportions of flag, fly ash and silica fume in green concrete. She used granulated blast furnace slag, fly ash and silica fume as concrete admixtures by means of equivalent replacement of cement, mixed them with water reducing agent. She compared the maximum compressive strengths of concretes with different ages and minerals in four schemes and obtained their respective optimal proportions: (1) when slag dosage is 35%, fly ash is 10%, the maximum compressive strength values of concrete with different ages are 27.4 Mpa, 38.6 Mpa, 40.6 Mpa and 45.1 Mpa; (2) when slag dosage is 35% and fly ash additive is 10% and water reducing agent 1%, the maximum compressive strength values with different ages are accordingly 42.3 Mpa, 43.8 Mpa, 46.3 Mpa and 47.0 Mpa; (3) when 30% of fly ash alone is added and 1% of water reducing agent is added, the maximum compressive strength values with different ages are 35.3 Mpa, 39.0 Mpa, 39.8 Mpa and 43.1 Mpa; (4) when fly ash is 30%, slag 20%, silica fume 10% and 1% of water reducing agent is added, the maximum compressive strength values with different ages are 37.2 Mpa, 38.7 Mpa, 40.0 Mpa, and 44.4 Mpa. In addition, the role of performance and mechanism of the above admixtures and uses of green concrete are also expounded..
Optimization of Green Low Carbon Packaging Based on the Extreme Value and Color Fading Period
Authors: Yu Ying
Published: October 2013

To construct low-carbon city, the development trend of green living is gradually clear, low-carbon has become the new trend of various fields development, and green planning, green building and low-carbon consumption also have become the mainstream of society. From the green low-carbon and minimalistic design of the packaging field starting, first expounded the importance of packaging materials green low-carbon and its superiority analysis, and then the use of random choice model makes science choice analysis of packaging materials, further using the deterministic model analyzes the layout and color of packaging design, to provide the theoretical basis and practical new model for green low-carbon packaging and minimalistic design.