bluuebunny/crossref_metadata_2025 huggingface dataset:
Le lien beau-parental à l'épreuve de la transmission L'héritage dans les familles recomposées après divorce
Authors: Martial Agnès
Published: July 2013

A travers la question de l'héritage se dessinent les logiques relationnelles enjeu dans les familles recomposées après divorce. L'importance de la corésidence et de la coéducation des enfants de la famille recomposée apparaît fortement, sans pour autant que se confondent le caractère profondément électif d'un lien beau- parental unissant deux individus et le lien de filiation qui donne à l'enfant ses origines et son identité. Notre droit est appelé à évoluer vers une nouvelle appréhension des familles recomposées après divorce, qui transformerait profondément le lien entre transmission et filiation.
L'ONU contre la famille ? La famille dans les textes onusiens depuis la Déclaration universelle des droits de l'homme de 1948
Authors: Chélini-Pont Blandine
Published: July 2013

La famille est une réalité que la Déclaration universelle des droits de l'homme de 1948 ne reconnaît que par détour et qu'elle ne définit pas. Elle sert de repoussoir, entre les années cinquante et quatre-vingt, dans la lutte titanesque de l'ONU pour la promotion de la dignité et de la liberté de la personne, conçue hors de ses attaches naturelles. Cependant, malgré la tonalité majoritairement négative qui se dégage des textes concernant la famille, on peut noter une forme de prise de conscience. A l'attitude suspicieuse succède, au début de la décennie quatre-vingt, une tentative soutenue de défense de la famille comme un espace privilégié de développement personnel. Cette tentative ne paraît pas avoir réussi et l'ONU, portée à protéger les faibles dominés dans la structure familiale, a accumulé beaucoup de retard en matière de promotion positive d'un « droit à la famille » comme nouveau droit de la personne à intégrer aux autres droits, ce qui fragilise sa légitimité.
Les allocations familiales aux cantonniers Une expérience catégorielle menée entre 1896 et 1920
Authors: Montes Jean-François
Published: July 2013

L'élaboration d'un système d'allocations familiales est la résultante d'une double démarche : sa conception politique et sa validation économique. La mise en place du dispositif se confronte à des difficultés tant au niveau national qu'au niveau local. Pour que les salariés du commerce et de l'industrie en bénéficient, vingt ans vont être nécessaires, entre 1920 et 1940. Pourtant, une expérimentation pragmatique s'est déroulée avant 1920 pour une catégorie déterminée d'ouvriers chargés de famille, les cantonniers des services de voirie de l'État, des départements et des communes. Les questions techniques vont toutes se trouver posées, à un moment ou à un autre, et faire l'objet de réponses diversifiées.
Synthèses de recherches
Authors: Boyer Danielle
Published: July 2013

En 19%, la Caisse nationale des allocations familiales (CNAF) a lancé, dans le cadre de ses programmes pluriannuels de recherche, un appel à propositions de recherches sur le thème de la petite enfance. Cet appel privilégiait trois grandes approches. La première visait la réactualisation des travaux sur la socialisation et le développement du jeune enfant. La deuxième proposait de s'interroger sur le système d'acteurs institutionnels intervenant dans le champ de la petite enfance. La troisième s'intéressait aux échanges et interactions de «première ligne»: parents, puéricultrices, assistantes maternelles, enseignants et éducateurs, médecins. Des résultats finaux des travaux issus directement ou indirectement de cet appel d'offres nous sont parvenus. En complément des articles présentés par les chercheurs eux-mêmes dans Recherches et Prévisions, il apparaît utile de mentionner succinctement d'autres éléments qui enrichissent le questionnement institutionnel pour la branche Famille de la Sécurité sociale.
L'implantation des centres sociaux sur le territoire
Authors: Crépin Christiane , Le Jeannic Thomas
Published: July 2013

Dans le cadre de leur politique d'action sociale, les caisses d'Allocations familiales soutiennent environ mille huit cents centres sociaux. Ces équipements ont connu un fort développement dans les années soixante-dix. D'autres se créent encore. Le centre social est un équipement essentiellement urbain, situé souvent au cœur de l'agglomération. La présence d'un centre social dans une commune est d'autant plus probable que la population est importante. Néanmoins, de nombreux centres sont implantés sur de petites communes. Un tiers des centres sont installés dans des quartiers relevant de la politique de la ville. Le taux d'équipement est plus important dans les communes dont la population dépend fortement des prestations sociales que dans les communes aisées. Ce constat, cependant, n'est pas si tranché. L'environnement socio-économique de ces centres est assez varié. Si, globalement, l'implantation des centres coïncide avec la «demande sociale », cette correspondance n'est pas systématique. Des manques flagrants sont repérables dans certains départements ou certaines villes à forte densité de population. Inversement, certaines zones plus rurales sont très bien équipées. En Ile-de-France, le taux d'équipement est relativement moyen mais les centres sont généralement implantés sur les lieux de plus forte demande sociale.
Réflexions sur la causalité en sciences sociales
Authors: Courgeau Daniel
Published: July 2013

Si le chercheur ne peut induire une causalité au sens strict à partir de la seule observation des phénomènes, il doit cerner l’ensemble des faits observés dans son champ par des hypothèses suffisamment générales pour pouvoir tous les englober et conduire à une explication satisfaisante de ces divers événements. Deux paradigmes ayant prévalu dans certaines sciences sociales sont développés dans cet article. Le premier suppose que les faits sociaux ont une existence propre, indépendamment des individus qui les vivent et qu’ils ont une grande stabilité dans le temps. Mais ce paradigme peut conduire au risque d’erreur écologique, ignorant le rôle et l’effet des actions individuelles. Le second donne, au contraire, la priorité aux comportements individuels et conduit à une étude des actions du sujet en fonction de ses diverses caractéristiques. Il provoque le risque d’erreur atomiste si l’on ignore le contexte dans lequel les actions se produisent. L’analyse multi-niveaux permet de dépasser ces deux écueils en faisant intervenir divers niveaux d’agrégation, passant de l’individu à des unités plus complexes. Elle doit simultanément faire intervenir le temps pour prendre une approche des phénomènes humains plus satisfaisante, dans une analyse biographique multi-niveaux. Une discussion d’ensemble montre l’importance du mode d’observation sur les hypothèses posées et la façon dont de nouvelles observations, amenant des contradictions, conduisent à un changement de paradigme. Inversement, ce changement peut mener à de nouveaux modes d’observation et d’analyse des sociétés humaines.
Study on Electrical Contact Degradation Behavior of Beryllium Bronze
Authors: Zhang Ai Ai , Zhang Wei Fang , Zhang Yu Long , Zhao Shi Jun
Published: July 2013

Aiming at electrical contact degradation behavior of beryllium bronze in storage, electrical contact accelerated degradation test was made. Choosing contact resistance as the performance degradation sensitive parameter, studied its degradation behavior by testing contact resistance of beryllium bronze under different temperature after different oxidized times. The result shows that the relationship between contact resistance and oxidized time is exponential and the lifetime of beryllium bronze samples at normal stress is 24.4 years when failure threshold is 100 mΩ and confidence is 95%, which is predicted by Arrhenius model related to temperature.
An Energy Balanced Clustering Algorithm Based on LEACH Protocol
Authors: Liao Qian , Zhu Hao
Published: July 2013

The primary objectives of the wireless sensor network routing protocol design are balancing network energy consumption and extending the entire network lifetime. This paper analyses the effectiveness of LEACH protocol in cluster-head selection, and proposes an improved clustering algorithm. This new algorithm takes nodes residual energy and location information into account, optimizes the selection method of the threshold for electing cluster-head, improves optimal cluster-head selection strategy that is normal nodes select the optimal cluster-head based on the cost function. Simulation results show that the improved protocol is better than LEACH in balancing node energy consumption, improving the efficiency of data transmission and prolonging the network life.
Synthesis of Y3Al5-xFexO12 Nanopowder by the Co-Precipitation Method: Influence of Precipitate Agent
Authors: Zeng Min , Wang Yun Hong
Published: July 2013

The Y3Al5-xFexO12 (0x5, YAIG) powders have been prepared by co-precipitation technique in which NH4HCO3 or (NH4)2CO3 is used as a precipitant and Y(NO3)3·6H2O, Al (NO3)3·9H2O and Fe (NO3)3·9H2O as raw materials. The composition of YAIG precursor, the phase formation process of YAIG and the properties of the powders were investigated by means of XRD, SEM, TEM and EDS. The results indicated that the precipitant effects the preparation of pure-phase YAIG powders. AC as precipitant could produce a hydroxide precursor, which transformed to a mixture. AHC as precipitant could produce a loosely agglomerated carbonate precursor. The resultant YAIG powders showed good dispersity and excellent sinterability.
Review on Application of Hybrid Energy Storage Based on Ultracapacitor
Authors: Yang Xiao Bin , Li He Ming , Jiang Zhe , Wang He , Yin Zhong Dong
Published: July 2013

Characteristics of ultracapacitor and classic model have been introduced in this paper. Due to its superior performance, ultracapacitor is used for hybrid energy storage system with lead-acid battery. The performance and potential application of hybrid energy storage system have been elaborated, which make some contribution to the promotion and application of energy storage technology.
Wind Power Forecasting Based on the BP Neural Network
Authors: Mao Jian Dong , Zhang Xiao Jing , Li Juan
Published: July 2013

Accurate short-term wind power forecasting has important significance to safety, stability and economy of power system dispatching and also it is a difficult problem in practical engineering application. In this paper, by use of the data of numerical weather forecast, such as wind speed, wind direction, temperature, relative humidity and pressure of atmosphere, a short-term wind power forecasting system based on BP neural network has been developed. For verifying the feasibility of the system, some experiments have been were carried out. The results show that the system is capable of predicting accurately the wind power of future 24 hours and the forecasting accuracy of 85.6% is obtained. The work of this paper has important engineering directive significance to the similar wind power forecasting system.
A New Electric Power Harmonic Detection Scheme
Authors: Wang Chao
Published: July 2013

Microcomputer relay is a kind of intelligent devices used for detecting and protecting power system. Whenever, it quickly calculate whether the power system is wrong or not on the basis of the fundamental and harmonics detected from power system, And according to the calculating results to obviate the troubles, among them, the fundamental and harmonics acquired accurately in time is the most important part of the power system protection process. The basic principle of d-q fundamental and harmonics voltage detection is presented and on this basis a fundamental and harmonics detection method of presumption the transformation frequency is put forward. The results of the theoretical analysis and MATLAB simulation indicate that the d-q method in this paper can precisely detect the voltage and frequency change of the power system in time, whether the distortion voltage or not in three-phase power system .
Performance Analysis of Self-Cleaning Hard Coating on Insulators after Trial Operation
Authors: Wang Wei , Zhang Hua , Chen Can
Published: July 2013

SCHC is a new kind of insulator coating designed to enhance the pollution flashover voltage, and more importantly, to reduce contamination accumulation on insulators. SCHC has good performance in laboratory, but its operating effect has not been studied. In this paper, sample insulators with SCHC coating having operated for a year are tested concerning its hydrophobicity, NSDD, ESDD, and voltage withstanding capability. The result shows that the hydrophobicity doesnt change after a years operation and contamination accumulation on SCHCs surface is much less than that on the RTVs surface. The SCHC has better performance than RTV overall and still needs to be improved in the future.
The Optimization Design and Mechanical Analysis of the Collector
Authors: Yang Zhi Jun , Zhou Lin Yong
Published: July 2013

Solar power generation is one of the important directions of development, however, Trough solar is the world's most mature and achieve commercial operation of power generation technology. The design of the key components of the entire power generation collector is particularly important. Using optimization design method of key components of the collector for solar power generation equipment mechanics analysis reduces the production cost. Related products for the future of the design, manufacture provides some reference theory basis.
Test Research on Thermal Conductivities of Silty Clay in Freezing and Thawing Based on Thermal Current Meter Method (TCMM)
Authors: Guo Qing Song , Li Xin , Li Min
Published: July 2013

Silty clay’s disturbed soil samples of were measured to ascertain the correlations between thermal conductivity and dry density or water content in the freezing and thawing conditions and provide a certain reference for soil’s thermal conductivity measurement of underground project in seasonal frozen area in future. The relationship between another variable and thermal conductivity was inquired into through fixing one variable in the test process. Through the test data analysis, the conclusion can be drawn as followed. Keeping dry density unchanged, silty clay’s thermal conductivities in freezing and thawing increase with water contents. When dry densities are different, the growth trends of thermal conductivities are slightly different. In the same moisture content, the relation between dry density and thermal conductivity appears as positive correlation.
Effects of Cooling Rate on Microstructure and Properties of Nb-Ti Micro-Alloyed Steel
Authors: Li Xin , Zhao Jie , Yang Xun , Bao Jun Cheng , Ning Bao Qun
Published: July 2013

Continuous cooling transformation (CCT) curves of deformed austenite (A) of Nb-Ti microalloying high strength steel were measured using Gleeble-3800 thermo-mechanical simulator, and corresponding transformation and structure were analyzed, and the effects of cooling rate on the tested steels mechanical property were studied. The resultes showed that the Ar3 transformation point decreased with increasing cooling rate after hot-rolling. The morphology of ferrite (F) grains changed from polygonal to lath, and the pearlite (P) colonies became more fine with increasing cooling rate. The quantity of ferrite and pearlite decreased, and the quantity of bainite (B) and martensite (M) increased. Then the hardness of Nb-Ti micro-alloyed steel is increased along with the increasing cooling rate, which may owing to the reasons that the hardness of ferrite and pearlite is far smaller than that of bainite and martensite, and the grain refinement causes the hardness increasing.
More than Four Subtypes of Trimeric Hydrogen Bonds in Hydroxyl Halides
Authors: Liu Xiao Dong , Zheng Xu Guang , Meng Dong Dong , Xu Xing Liang
Published: July 2013

Through ten years physical investigation on the geometrically frustrated coordination compound series basic (hydroxyl and deuteroxyl) transition-metal halides M2(OH/D)3X (M=Mn, Fe, Co, Ni and Cu; X=Cl, Br and I), we have determined the existence of four crystal structures, whose space groups belong to Nos. 11, 14, 62 and 166, respectively, in this series till now. After studying their Raman spectra, we firmly believe that a nonnegligible hydrogen bond (H-bond) exists in every material. Considering carefully their local lattice environments of the basic groups, we find a new kind, to the best of our knowledge, of H-bond [(OH)3···M] and nominate it as the trimeric H-bond, and further confirm three types of symmetric structures, which have totally four subtypes of trimeric H-bonds so far. More two subtypes are predicted to exist in nature. This result may provide a new interesting subject for quantum chemists and material physicists.
Effect of Laser Peening on Residual Stress and Micro-Hardness of TC4 Titanium Alloy
Authors: Qiao Hong Chao , Zhao Ji Bin , Zhao Yi Xiang , Li Lun
Published: July 2013

Laser peening offers potential advantages over conventional peen technologies in terms of the depth of the residual stresses that can be induced, and improvements in surface micro-hardness. The present study was undertaken to understand the effect of laser penning on the properties of titanium alloy, a TC4 titanium alloy work-piece was processed with ND: YAG laser with the wavelength of 1064 nm, pulse energy of 0-10J and pulse width of 12ns, and micro-hardness and residual stress for different laser peening parameters were examined and analyzed by micro-hardness tester and X-ray diffraction. Results are presented and discussed of the residual stress profiles and the micro-hardness profiles, The experimental results show that the satisfying laser peening appearance can be achieved when the pulse energy was 6J, water tamping layer thickness was 1.8mm and ablative layer thickness was 100μm, surface micro-hardness increased by up to 33% and the compressive residual stress on the surface of laser shocked area reached up to-327.8MPa, laser peening improved hardness and residual stress of titanium alloy significantly. The experiment results show that the effect of laser peening was evidently.
Low Temperature Raman Spectroscopic Study on γ-Cu2(OH)3Cl
Authors: Liu Xiao Dong , Meng Dong Dong , Zheng Xu Guang , Xu Xing Liang , Guo Qi Xin
Published: July 2013

The low temperature (T) Raman spectroscopic study on the geometrically frustrated clinoatacamite γ-Cu2(OH)3Cl is reported. By measuring the T-dependent spectral profiles and representative modes, we have obtained auxiliary evidence of successive magnetic transitions near Tc1 =18.1 K and Tc2 =6.4 K determined accurately by the magnetic experiments in the Raman band frequencies and peak widths of the representative modes for magnetic research conclusions and observed a pronounced Raman spectroscopy background featuring a broad continuum at all Ts. A quantitative analysis reveals spin fluctuations on a picosecond time scale in the intermediate phase.
Numerical Simulation of the Three-Dimensional Turbulent Flow in Roto-Jet Pump
Authors: Zhu Fang Neng , Liu Dong , Yang Xiao Yong , Wang Chun Lin
Published: July 2013

In order to study the internal flow characteristics of roto-jet pump, the standard turbulence model and SIMPLEC algorithm were used to calculate the three-dimensional turbulence flow field under design condition. The simulation results reveal the internal flow phenomena of roto-jet pump, which shows the pressure near the suction surface and the inlet edge of impeller is minimum, and the cavitations is easy to occur . At the same time, the circumfluence and flow separation phenomenon is not found in the vicinity of the short blade, which is used to shunt the flow. The pressure gradient changed little in the rotor cavity. Is easy to form vortex at manifold import corners, there is no vortex generated on the second corner when the diffusion tube is used. The results obtained in this research provide a theoretical foundation for improving pump performance and reduce the hydraulic loss.
Water Hammer Characteristic of the Pipeline in Ship Pitch Balance System
Authors: Peng Li Kun , Zhang Yang Yang , Yu Liang Qin
Published: July 2013

In ship pitch balance system, serious flow impact and water hammer occur because of the turning on and off of valve during the procedure of water-shift. Flow area of the ball valve used most on ship was derived, and mathematical models of pressure lost before and after valve were formulated. Besides, considering the fact of water-shift balance system, an AMESim model was established based on improved traditional throttle model. And the validity of AMESim model was ascertained by comparing simulation results of stable pressure before and after valve with calculated values from mathematical models. Then, with the AMESim model, impact characteristics of water-shift pipeline were investigated when adopting various valve switch rules, length of pipelines before and after valve and using an accumulator in system. From that, methods to reduce pipeline impact were proposed, which make good references for noise control of ship pitch balance system.
Simulation Research of Banded Wedge and Synchronous V Belt Drive Based on ANSYS Workbench
Authors: Wu Ying , Zhou Xu
Published: July 2013

For cutting down the stress and displacement of banded wedge and synchronous V belt drive in the transmission process, promoting the transmission mechanism, and improving quality of the belt drive, the working principle of the transmission mechanism was introduced briefly. The three dimensional solid model of the transmission mechanism constituted in pro/e; the main parameters of the model were set using ANSYS Workbench. And then the serialization simulation analysis of the transmission mechanism was achieved when the tension force is located in the point of the V belt exiting meshing with the driven wheel; the cloud diagram of Von Mises stress and the maximal Von Mises stress and total deformation of the transmission mechanism were elicited. The simulation results were analyzed. The simulation results show that the maximal equivalent stress and maximal total deformation of the transmission mechanism are determined by the size of the tensioning force when the active force is small. Augmenting the active force of the transmission mechanism the maximal equivalent stress increases effectively and the maximal total deformation changes little when the active force is large. Reducing becomingly the tensioning force in ensuring natural belt drive shall reduce effectively the maximal Von Mises stress of the transmission mechanism. Adjusting opportunely the location of the tensioning force the total deformation of the transmission mechanism reduces effectively.
Analysis of Turnover Mechanism of the Aluminum Electrolytic Capacitor Assembling Machine
Authors: Zheng Zhou , Xia Bi Zhong , Liu Yi Ran , Ouyang Zhong Dong
Published: July 2013

Turnover mechanism is one of the important parts of the element bar conveying subsystem in the aluminum electrolytic capacitor assembling machine (AECAM). This paper analyzed the structure and motion characteristics of the turnover mechanism, and used the ADAMS software to do its parametric modeling, dynamic analysis and optimization design. Finally the paper concluded that Final result of turnover mechanism optimization was that the maximum of resultant force in the cam rotary center decreased by 49.3%.Application of ADAMS software will provide a new way for design and improvement of the assembling machine in future.
Finite Element Analysis of Gear Contact on Two-Speed Transmission in Electric Cars
Authors: Zeng Qing Dun , Tan Feng Zhe
Published: July 2013

The main content of gear design is the strength design, and the contact strength design of gears is the main heart of the strength design, because the stress and deformation of gears directly affect their safety and service life and concern whether vehicle transmissions work smoothly. Therefore it is necessary to perform a finite element analysis for the gear contact in transmission. Based on the contact characteristic of helical gears, a three-dimensional solid model was established by using the software Pro/E, and the contact stress analysis of gears was carried out by the software ANSYS Workbench. The stress and strain distribution contours of helical gears were obtained, and then the check of shtrength and rigidity was performed. Thus, it is convenient for designers both to test the strength of gears and to modify the size of gears.
Notch Size and Loading Rate on the Tensile Behavior of Woven Fabric Reinforced Flexible Composite with Symmetrical Double Edge Notch
Authors: Wang Ze Xing , Jiang Jin Hua , Chen Nan Liang
Published: July 2013

In order to investigate the effects of lager notch ratio (2α/W) and loading rate on the tensile behavior of woven fabric reinforced flexible composites, in this study, fracture mechanism and tensile strength of finite woven fabric-reinforced flexible composite materials with a through-the-thickness symmetrical located double edge notches is experimentally investigated, and the effects of notch size, loading rate on the tensile properties of notched specimen are analyzed. The results show that the woven fabric reinforced flexible composites exhibit notch sensitivity and loading rate dependent. These results play an important role in predicting strength and evaluating the lifetime of textile reinforced flexible composite materials with double edge notches.
Open Robot Control Platform Based on LSOA
Authors: Tang Feng , Rao Geng Sheng , Chen Qiang , Zhang Ping
Published: July 2013

Aims to address the restrictions imposed by tranditional robot Control system development approach such as close structure, function immobility, lack of reconfiguration at run time, hard to guarantee. a lightweight service-oriented architectures (LSOA) for robot control system is proposed. The main features of this architecture include central control mode, message-based interaction and configuration system based on embedded database. This architecture provides good supports for runtime reconfiguration, and allows integrating different components with the aid of a configuration system. The experiment indicates that the LSOA approach can improve the flexibility, reconfiguration and agility of the system.
Research and Design on Vision System of the Mobile Robot
Authors: Ma Xin , Sun Rong Guang , Dong Yong Feng
Published: July 2013

The paper presents the design of vision system of the mobile robot, and shows methods of object recognition based on color images in the system of mobile robot. To adapt to the different light conditions, HSI color space is used. The system is able to meet the demand on rapidity and veracity of system of mobile robot. Experiment results show that the proposed technique is liable to accomplish object recognition in presence of changing illumination environment conditions.
Analysis on the Bearing Capacity of Old Highway Bridge in Heavy Hilly Areas
Authors: Yang Ya Xun , Qiao Chao
Published: July 2013

There is heavy traffic on many expressway bridges in mountainous areas volume, and particularly there are often heavy duty vehicles in the coal-producing regions. Most bridges show different degrees of disease in the operations many years later. Combing the bridge disease investigation, materials inspection and load test done on the background of the interchanges over Yicheng-Houma expressway, this paper will make assessment of the frequently-used box-girder bridges' bearing capacity in the expressway to provide a reference for bearing capacity assessment of the old expressway bridges in mountainous regions.
Determination of Deformation Characteristics of C38ML Microalloyed Steel
Authors: Michal Duchek , Tomas Kubina , Pavel Konopik
Published: July 2013

Thanks to their properties, microalloyed steels have found numerous applications in virtually all branches of industry. Forging plants, which supply various forged parts for automotive industry, are under substantial pressure to cut costs and reduce production times. One of potential sources of savings is reducing the forging temperature. This step requires that the deformation behaviour of feedstock materials is mapped accurately. The C38ML material was chosen for the present experiment and tested in compression in a plastometer. Test temperatures ranged from 700 °C to 1100 °C at deformation rates between1 mm/s and 100 mm/s. Data from plastometer tests were converted into a model compatible with the DEFORM simulation software. The model was employed for optimising the forging process in terms of forming tool speeds. Another approach to finding this valuable information consists in using various simulation programmes. In the present experiment, measured deformation curves were compared with those obtained using the JMatPro software. Finally, reference forgings were made in a hydrostatic forging press in trials of the new manufacturing procedure and their properties were measured
Chaos Synchronization of Two Light-Emitting Diode Systems with Complex Dynamics via Adaptive Neural Control
Authors: Han Chun Xiao , Li Xiao Qin , Yang Ting Ting , Li Rui Xue
Published: July 2013

Light-emitting diodes with optoelectronic feedback loop display complex sequences of periodic mixed mode oscillations and chaotic spiking. In this paper, we propose an adaptive neural control scheme for chaos synchronization of two unidirectional coupled LED systems. Based on Lyapunov stability theory, the controller can stabilize the synchronization error dynamics at the origin point, thus chaos synchronization can be obtained. The simulation results demonstrate the effectiveness of the proposed control scheme.
Fast Stereo Video Coding Based on C-Means Fuzzy Hopfield Neural Network and AVS
Authors: Cui Heng Zhi , Wang Chong
Published: July 2013

A fast stereo video coding method based-on C-Means Fuzzy Hopfield neural network and AVS (Audio and Video coding Standard) is presented in this paper. In the system, an AVS encoder encodes the left-view sequence. For the right-view sequence, combined predictions from the temporal or disparity domains are exploited, with a hierarchical two-stage neural classifier for fast mode decision. Experiment results show that our method can achieve up to 30% of time savings with nearly ignored quality degradation and only 7% of bit-rate increase.
Denoising of the Respiratory Signal of Electrical Bio-Impedance
Authors: Song Ning , Ji Lian Ying , Xu Yong Peng
Published: July 2013

Human respiratory signal provides important information in modern medical care. In daily life, respiratory signal is usually captured under different motion states with the help of Electrical impedance pneumography (EIP). Consequently, the captured signal is easily corrupted by electronic/electromagnetic noise, internal mechanical vibration of the lung and motion artifacts. Because respiratory signal and interferences co-exist in an overlapping spectra manner, classical filtering method cannot work here. In this paper, we present a new signal processing method for eliminating the noise and interferences included in EIP signal, by separating the correlated motion artifacts from the raw EIP and 3-axis Acceleration (ACC) signals, restoring the rough respiration signal from the mixed signal, and further processing using wavelet analysis approach. Results are compared to traditional denosing algorithms by wiener filter, which indicates that the new signal processing method we presented is suitable for EIP signals under the motion states.
Measurements and Visualizations of the Unsteady Flow Field on a Freely Falling Plate
Authors: Huang Wen Tao , Zhou Qi , Wang Fu Xin , Liu Hong , Wu Jun Qi
Published: July 2013

Freely falling of a plate contains very complicated unsteady characteristics. In the past decades, most of the studies focused on the mode and trajectoryofa freely falling plate. In this paper, we use PIV to study the instantaneous flow structure and analyze the force exerted on the plate and the influence of the flow on the motion of the plate. As the Reynolds number increases, the flow structure will be changed from the stable mode to the chaotic mode,and it accompanies with a mode switching of the freely falling plate. However, there is no necessarilycorresponding with the stable flow structure, even for the freely falling plate with a stable mode.
Simultaneous Determination of Tetracycline, Macrolide and Sulfonamide Antibiotics in Soils Using Accelerated Solvent Extraction Followed by Solid-Phase Extraction and High Performance Liquid Chromatography Tandem Mass Spectrometry
Authors: Sun Feng Cui , Li Xue Wen , Li Lin Lin , Ding Yan Qiang , Zhao Hui
Published: July 2013

This research developed and optimized the methods for simultaneous determination of tetracycline (TCs), macrolide (MLs) and sulfonamide (SAs) antibiotics in soils using accelerated solvent extraction (ASE)- solid-phase extraction (SPE)-high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS). Methanol-citric acid (pH=4.7) was used as extraction solvent, diatomite (washed by EDTA) was used as dispersing agent. Firstly, soil was extracted by ASE with the parameter conditions: pressure 1500 psi, temperature 70°C, static 10 min, 1 circle, then pre-concentration by SPE and followed by HPLC-MS/MS analysis. Recovery was 86.3%~97.4% for SAs, 67.3%~87.4% for TCs and 68.4%~78.3% for MLs. RSD < 9 % and r > 0.99. Limits of detection (LOD) was 0.5~0.9 ug/kg for SAs, 0.2~1.1 ug/kg for TCs and 0.2~0.3 ug/kg for MLs. This method determined 9 kinds of antibiotics within 15 min, the determination accuracy can meet the requirements of actual analysis.
A Online System about Tool Observation Based on USB Microscope
Authors: Zhao Qian Cheng , Feng Pei , Yang Chong Chang
Published: July 2013

This paper introduced an online system about tool observation based on USB microscope. By programing on the upper computer realized the visualized operations about the image data collection, processing and display. then combined with the CMOS digital microscopes hardware which based on USB2.0 communication bus, analyzed and solved matching work between the data transmission that based on USB interface and CMOS image collection. In the meantime, realized image collection, real-time display, and the general processing operations about image that follow up. At last, Through the test and verified the stability and reliability about this observation system. At the same time, analyzed the feasibility about observe the beating of flat chisel using USB microscope.
The Theory of Using an Intensity-Correcting Algorithm to Overcome Quantization Error for Phase Measuring Profilometry
Authors: Zhang Qiu Ju , Wang Yong Chang , Liu Kai
Published: July 2013

In the image process, intensity differs from its true value because the quantization process restricts image pixels to lie on an integer grid, and phase quantization error is introduced. In this paper, we propose a theory of using an intensity-correcting to overcome phase quantization error. According to the distribution of the intensity error in some pixels, the mathematical model of the intensity error is reconstructed to correct intensity values and reduce phase quantization error. Using specific example deduct the intensity-correction algorithm. At last, we compare the uncorrected quantization error and the quantization error after correction, and prove that the principle of this algorithm is right.
Design and Implementation of a Multi-DSP Processing System
Authors: Wu Qiang , Zhao Peng , Yin Tong , Liu Qing Shan
Published: July 2013

A multi-DSP real time image processing system is designed, with TI's TMS320C6455 as core processor as well as Xilinx Virtex5 FPGA for pre-processing and important data channel. The system has completed testing verification and results show that the design is feasible and reliable.
Research on the Full-Flow and Partial-Flow Dilution Sampling Systems for Exhaust Gas of Engine
Authors: Gao Zhang , Liu Shuang Xi , Mai Hua Zhi , Hao Jian Hong
Published: July 2013

This paper analyzes the principle of operation, the feature of systems, the contrast of advantages and disadvantages of the two different systems which are Full-flow dilution sampling system (FFDSS) and Partial-flow dilution sampling system (PFDSS).This paper researches the correlation of this two different systems and the ways of improving the correlation. Many researches show that the correlation of the PM's test is below 10%.The PFDSS can replace the FFDSS in the special case. Some detailed suggestions of improving the systems to meet the future requirements are presented in the last of this paper.
The Research on the Matching Method of High Voltage Arm Resistors for the High DC Voltage Dividers
Authors: Zhang Huang Hui , Song Jian Kang , Lin Fei Peng , Shao Hai Ming , Lv Dan , Li Wen Feng
Published: July 2013

The stability of the high voltage arm resistors has a strong influence on the performance of the resistance high DC voltage divider. So by analyzing the main parameters that affect the resistor value change, including voltage coefficient, power coefficient and so on, a new matching method is proposed to make a high precision high DC voltage divider in this paper. Based on the principle of pairing the resistors and adjusting the big and small ones, a high precision high DC voltage divider could be made with the voltage variation less than 0.005%, even on the condition of using high voltage coefficient and power coefficient resistors.
Noise Reduction of Single Cylinder Diesel Engine Based on Virtual Prototype
Authors: Chen Hai Jian , Zhu Guang Yu
Published: July 2013

Based on the one-dimensional and unsteady flow theory of gas dynamics and acoustic analysis method, a thermodynamics and acoustics model of single cylinder diesel engine was established, then the model was realized using GT-Power. A method combined with mechanic analysis and acoustic prediction was presented. With this method, the influence of compression ratio, inlet and outlet channels, intake valve and exhaust valve timing on engine exciting force and noise is analyzed. Then the optimization value of each factor is determined to improve the muffler. The intake and exhaust noise of the optimized engine is simulated with this model, the simulating results indicated that the exhaust noise reduces 2.6~3dB, and the intake noise reduces 1.1~1.4dB.
Hierarchical Optimization Temperature Control of Hot Rolling Induction Heating
Authors: Kong Ya Guang , Zheng Song , Xu Zhe
Published: July 2013

Hot strip mill in steel rolling process of induction heating is more and more widely used, because temperature distribution of the billet into the furnace is uneven, the artificial control of heating furnace is difficult to reach temperature accuracy and stability. This project using hierarchical optimization method, connect to Siemens PLC using PPI protocol, and through data modeling method to build the billet heating process model, using stochastic optimization method to obtain the optimum heating voltage curve and passed to the PLC. PLC using a segmented PID algorithm to achieve the voltage curve tracking control. The experimental results show that the hierarchical optimization structure achieved very good results.
Booster Seat Dynamic Parameter and Damage Analysis
Authors: Liu Jun , Wang Xiang , Zhang Xue Rong , Cheng Xiao Dong
Published: July 2013

In order to reduce the rate that child passengers injury their chest and head in a collision, parameter analysis of child restraint system is performed. Based on multi-body dynamics software MADYMO, child occupant crash simulation model is built. In accordance with the laws and regulations, the validity of the model is verified. Damage criterions, such as head the centroid synthesis of acceleration, HIC36 and resultant chest acceleration, are used to analyze the influence of different coefficients on childs injury, including friction between booster seat and vehicle seat, safety belt stiffness and friction between the dummy and safety belt. Results show that increasing the coefficient of friction of boost seat bottom and seat belt by coating them with friction material can reduce childs head and chest injuries significantly during the collision.
Design of 3D Modeling for the Floating Wave Power Generation Device and Test
Authors: Wang Shi Ming , Wang Ya Nan , Ma Li Na
Published: July 2013

Ocean wave energy is one kind of potential renewable energy, and the devices of using wave energy generate power are varied. This paper put forward a new method of using wave turbine to absorb wave energy, then output mechanical energy through mechanical drivers to generator, finally convert to electric energy by generator directly. Generally, structure design of the wave-wing is very important to the device. It is the important component of the device for absorbing wave energy. For this study, we designed the 3D modeling of the floating wave power device through SolidWorks software, and produced the wave turbine on proportion of 1:1. We had tested the wave turbine in the pool of the laboratory and obtain the torque and power under certain conditions.
Research on Loading Distribution by Trailers
Authors: Chen Ke Qin
Published: July 2013

Different from the Slippage shipment, when platform trailers have been used for shipment, the weight of large-scale structure objects evenly distributes on the small wheels axles. Because of tires deformation that generates by trailers continuing to moving to the barge, the surface contact between the wheels and ground makes the load gradually acts on the barge, and meanwhile the center of gravity also changes which is inconvenient to the actual load adjustment. In this research, based on analyzing the heavy trucks tire deformation curve and according to the relevant theories, the contact length of the tire and ground can be calculated. With the trailers gradually move forward, the load equally distributes to each column of the trailers wheels.
Based on Numerical Simulation of High-Performance Parallel Machine Muffler Experimental Calibration
Authors: Cheng Gen Yin , Yu Sheng Chen , Wei Zhi Yong , Chen Shao Jie , Cheng You
Published: July 2013

Commonly used commercial simulation software SYSNOISE and ANSYS is run on a single machine (can not directly run on parallel machine) when use the finite element and boundary element to simulate muffler effect, and it will take more than ten days, sometimes even twenty days to work out an exact solution as the large amount of numerical simulation. Use a high performance parallel machine which was built by 32 commercial computers and transform the finite element and boundary element simulation software into a program that can running under the MPI (message passing interface) parallel environment in order to reduce the cost of numerical simulation. The relevant data worked out from the simulation experiment demonstrate that the result effect of the numerical simulation is well. And the computing speed of the high performance parallel machine is 25 ~ 30 times a microcomputer.
Fully-Leaky Guided Mode Studies of Inverse Twisted Nematic Liquid Crystal
Authors: Zhang Zhi Dong , Wu Nai Fu , Ye Wen Jiang , Zhou Xuan
Published: July 2013

The fully-leaky waveguide technique has been used to explore the director of inverse twisted nematic liquid crystal cell. The reflection data, including all the polarization-conserving signals Rpp and Rss as well as the polarization-conversion signals Rsp and Rps, are recorded under various voltages applied to the cell of 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, and 7.0V (rms), at a frequency of 1kHz. We found that this technique was sensitive to the director changes, especially for the polarization-conversion signals. Then by fitting angle-dependent reflectivity data to modeling theory, the arrangement of the director and some importance parameters of liquid crystal cell are obtained. It is proved that the reflectivity of fully-leaky waveguide mode can give the imperceptibility change in the cell.
PIV Experiment on Near Wake Flow of Horizontal Axis Wind Turbine
Authors: Gao Xiang , Hu Jun , Wang Zhi Qiang
Published: July 2013

A three-dimensional horizontal axis wind turbine model was experimentally studied. The experiment was carried out in a laboratory wind tunnel. With PIV measurement, details about flow fields in the near wakeof the turbine blade were obtained. The result shows vortices generateon the tailing edge of the blade, and propagatedownstream then dissipate into small vortices. Vortices also generate at the tip of the blade, propagate downstream and along the radial direction then dissipate. The dissipation of the tip vortex is slower than the former. We also find that the wake of turbine blade rotates in the opposite direction of the blade.
Study on the Mode I Interlaminar Fracture Toughness of Multi-Directional Composite Laminates
Authors: Xie Zong Hong , Li Xiang , Zhao Jian , Hao Jie , Sun Yan Peng , Sui Xiao Dong
Published: July 2013

The double cantilever beam (DCB) test method and the modified beam theory are adopted to investigate the Mode I interlaminar fracture toughness of multi-directional composite laminates. The test procedure was developed by using a stereoscopic microscope to observe the delamination front tip and a testing machine to record the displacement and load data. A dial indicator was used to eliminate the error due to initial clearance in the clamp. A modified beam theory and a compliance calibration method were used to calculate the interlaminar fracture toughness. The Mode I interlaminar fracture toughness of carbon fiber reinforced bismaleimide resin matrix (BMI) composite laminates with four different interface patterns ( 0/0, 45/-45, 0/-45 and 0/90, respectively) was obtained. The results show that the patterns of interface ply angles have an obvious influence on Mode I interlaminar fracture toughness of composite laminates.
In Situ Plate Load Tests on the Soilbag Reinforced Expansive Soil Foundation
Authors: Bai F.Q. , Liu Si Hong , Xu Jian Qiang , Liu Xue Jiang , Gao Li Hong
Published: July 2013

In this paper, the research background of soilbag technique applied in the middle route of the South-to-North Water Transfer Project (SNWTP) is first described along with the reinforcement principle of soilbags. The loading deformation characteristics of the foundations for the marl, large-soilbag and small-soilbag are then discussed according to the in-situ load tests. The testing results indicate that the soilbag can improve the compression deformation characteristic of marl foundation significantly. The loading stiffness values of the marl, large-soilbag and small-soilbag foundations are about 16 to 18, 20 to 40 and 30 to 90 MPa/m respectively. Within the load range from 0 to 450 kPa, the loading and unloading p-s curves of soilbags consist of two parts, namely the perfectly elastic zone and the elasto-plastic zone. The unloading stiffness of soilbags is nearly 2 to 10 times greater than the loading stiffness. In addition, the mechanical rolling process can, to some extent, improve the compressive property of the soilbag foundation.
The Novel Application Model of Internet of Things Based on IPv6 Technology
Authors: Kuang Guo Fang , Kuang Chun Lin
Published: July 2013

Pv6 not only solves the problem of IP address deficient, also simplified the protocol header, and the success of the introduction of two new extension header AH and ESP. The Internet of things perceived terminal data format varied, unified management difficult operation, new business difficulty landing. The research of security Internet of things will mainly focus on the open web application security system, individual privacy protection mode of networking, security features, Internet safety laws formulation. The paper presents the novel application model of Internet of things based on IPv6 technology. Experimental results show that the proposed method has high efficiency.