bluuebunny/crossref_metadata_2025 huggingface dataset:
THE NEXUS BETWEEN PRICES, EMPLOYMENT AND OUTPUT GROWTH: A GLOBAL AND NATIONAL EVIDENCE
Authors: Caporale Guglielmo Maria , Škare Marinko
Published: April 2014

This paper investigates how output growth, employment growth and inflation influence each other in the short/long run. It builds on Phillips (1962) and Blanchard Fischer (1989) assessment that empirical links between output, employment and prices are central issue in modern macroeconomics. This paper brings a global perspective on short and long term links between employment growth, inflation and output growth using panel cointegration framework with non-stationary heterogeneous panel (119 countries over 1970–2010). The empirical results (on global and national level) strongly support the existence of a long-run equilibrium relationship between output growth, employment growth and inflation. A central finding is that possible trade-off effects between growth, employment and prices varies significantly among economies. Therefore, universal answers to questions Is inflation good for growth or Is there a trade-off between employment and growth are not straightforward for general macroeconomic theory. Each country must design own economic policy (targeting) taking into account the quantitative relationships between growth, employment and prices. This has important policy implications also for price setting policies, cost management, market strategy and risk management through productivity-demand disturbances effects on the business environment.
Trois décennies de modélisation des systèmes de villes : sources d'inspiration, concepts, formalisations
Authors: Sanders Lena
Published: April 2014

La géographie privilégie depuis longtemps une vision systémique des villes, l’amenant à placer les interactions entre les villes au cœur de sa compréhension des différentiels de croissance. Au cours des trois dernières décennies, la construction des modèles de systèmes de villes a connu deux sources majeures d’inspiration, l’une émanant de la physique et l’autre de l’informatique. Les concepts d’auto-organisation et de bifurcation, associés à une formalisation par les systèmes d’équations différentielles, caractérisent la première, le concept d’émergence et les systèmes multi-agents, la seconde. L’objectif est d’analyser l’articulation entre les familles de modèles qui ont découlé de ces deux sources d’inspiration. Certains auteurs décèlent une rupture entre ces deux familles de modèles, alors que d’autres, considérant des temporalités plus longues, discernent plutôt de la continuité dans les travaux de la modélisation urbaine. L’examen des travaux de cette période et des prises de position de différents auteurs, suggère une avancée en spirale.
On Some Endogenous Probability-Migration Models
Authors: Garcon Manuel , Garnier Josselin , Omrane Abdennebi
Published: April 2014

A propos de quelques modèles de flux migratoire avec probabilité endogène Nous analysons un modèle probabiliste de migration dans lequel la probabilité de migration dépend du capital humain, comme l’établit CHEN (2008). Nous montrons que le capital humain peut converger vers une valeur faible ou élevée en fonction non seulement de la dépendance fonctionnelle de la probabilité de la migration sur le capital humain, mais aussi en fonction des conditions initiales du capital humain et des croyances de la population. Grâce à de nouveaux mécanismes de sélection dans le modèle, nous analysons précisément comment les économies ayant des antécédents similaires peuvent suivre des équilibres différents parce que leurs agents économiques ont des croyances différentes quant à leur probabilité de migration dans le futur.
La dynamique migratoire : quels facteurs causaux de la fuite des cerveaux ? Une étude dans le contexte économique des territoires insulaires caribéens
Authors: Bellemare Fanny-Aude , Carluer Frédéric
Published: April 2014

Les principaux travaux théoriques et économétriques relatifs aux dynamiques migratoires ont jusqu’à présent privilégié l’étude des retombées ou encore les facteurs explicatifs induits par la fuite des cerveaux. En prolongement de ces analyses, cet article se concentre sur l’effet causal de la fuite des cerveaux et s’efforce de le tester. À partir d’un échantillon d’îles de la Caraïbe insulaire, cette étude met en évidence les facteurs causaux clés à l’origine de l’émigration de la main-d’œuvre hautement qualifiée.
Les déterminants de l'intensité des alliances capitalistiques entre groupes coopératifs agricoles
Authors: Triboulet Pierre , Filippi Maryline
Published: April 2014

Les coopératives agricoles françaises se développent sous forme de groupes coopératifs tout en maintenant une forte densité de partenariats. L’objectif de cet article est de mieux comprendre les déterminants qui motivent les groupes coopératifs à nouer des alliances capitalistiques entre eux. Les alliances sont identifiées à partir d’une base de données nationale exhaustive sur les coopératives agricoles en 2005. Mobilisant les théories du capital social pour expliciter le réseau d’alliances, deux modèles économétriques du choix et de l’intensité d’alliances sont proposés pour analyser le rôle des proximités géographique et organisée en lien avec l’activité du groupe. Les résultats mettent en évidence un lien fort entre la taille du groupe et son influence au sein du réseau d’alliances. Les alliances sont plus probables entre groupes ayant même activité dominante et proches géographiquement. Elles visent ainsi à renforcer des acteurs coopératifs leader en leur permettant d’étendre leurs activités et leur emprise territoriale.
Autour de « l'économie du savoir » : ses composantes, ses dynamiques et ses enjeux
Authors: Bouchez Jean-Pierre
Published: April 2014

Cette contribution se propose d’éclairer le concept d’économie du savoir à travers une lecture de ses différentes composantes (ou pôles), le plus souvent insérées dans le cadre d’un espace territorial (économie d’agglomération). Cette perspective sera ensuite complétée et enrichie en soulignant les différentes combinaisons interactives entre ces composantes, mais également les effets souvent risqués associés à leur déploiement.
Des stratégies pour le développement et le maintien du sentiment d'efficacité personnelle en tant que formateurs d'adultes
Authors: Duchesne Claire , Gagnon Nathalie
Published: April 2014

Les conseillers pédagogiques ont entre autres pour fonction d’assurer la formation continue et l’accompagnement pédagogique des enseignants. Leur travail présente de nombreux défis, dont ceux de construire leur compétence et d’assurer leur crédibilité en tant que formateurs d’adultes auprès des membres du corps enseignant duquel ils sont eux-mêmes issus. Lors d’entretiens semi-dirigés, onze conseillers pédagogiques à l’emploi d’un conseil scolaire de l’Ontario, au Canada, ont mis en lumière les stratégies par lesquelles ils parvenaient à développer et à maintenir leur sentiment d’efficacité personnelle en tant que formateurs d’adultes. Au cours de cet article, les stratégies relationnelles, de gestion du travail et d’attitude qui ont émergé d’une analyse inductive des données seront discutées.
The autoclave expansion test as a method for determining the stability of Portland cement
Authors: Veronelli Dante J. E.
Published: April 2014

Not available
Natural and controlled expansion of expanded clays for the production of lightweight aggregates
Authors: Neumann-Venevere P.
Published: April 2014

Not available
Contribution to the determination of the expanding properties of ceramic raw materials
Authors: Lehmann Hans , Diettrich Helmut
Published: April 2014

Not available
Control of fresh concrete
Authors: Heilmann W.
Published: April 2014

Not available
A Test With Small Dimension Cylinders for the Rapid Determination of the Quality of Cement
Authors: Dalziel J. A.
Published: April 2014

Not available
Some questions posed by the use of cement
Authors: Calleja J.
Published: April 2014

Not available
Installation and operation of a testing laboratory for production control at cement plants (2nd part)
Authors: Haarmann Fritz
Published: April 2014

Not available
The Research about Parallel Mechanism Workspace for Quenching
Authors: Zhao Tie Jun , Wang Yong Li
Published: April 2014

To research 3-DOF parallel mechanism institutions applying to the process of plasma arc surface strengthening, the author establishes an inverse kinematics of institutions mathematical model, and then, basing on its structural constraints and using the boundary finding, draws the workspace. It has guiding significance for the establishment of robotic the plasma arc surface strengthening process.
Structure and Dielectric Properties of Mg, Cr-Doped LaSrFeO3 Films
Authors: Hou Yang Lu , Fu Xing Hua , Tao Wen Hong , Jin Xin
Published: April 2014

Mg-doped LaFeO3 thin film and Mg, Cr-doped La0.5Sr0.5FeO3 thin films were prepared by the sol-gel method. The change rules of structure and dielectric properties of the films were studied by XRD, SEM, and Agilent. The dielectric properties of La0.5Sr0.5FeO3 and LaFeO3 films were improved by the substitute with Mg and Cr. The doping amount of Mg and Cr for the optimal dielectric properties of La0.5Sr0.5FeO3 films is 45mol%, 25mol%, respectively, and for LaFeO3, the doping amount of Mg is 8mol%. The observed pure perovskite phase of the doped films suggested the dissolution of Mn, Co, and Ni in La0.5Sr0.5FeO3 crystal lattice. Mg and Cr were integrate in the lattice of LaFeO3 and La0.5Sr0.5FeO3, and mineral is single perovskite phase. The surface of the film is smooth, without cracks, surface grain size distribution and had uniform grain size.
The Influence Caused by each Assembly Misalignment on the HGT Hypoid Gear's Meshing Performance
Authors: Wang Xing , Fang Zong De , Li Sheng Jin
Published: April 2014

The assembly misalignment is the key factor that influences the meshing performance of gear, the meshing performance worked on no-load or light load conditions is more completely expressed by contact pattern and transmission error. According to the contact pattern and transmission error, the influence of assembly misalignment to the meshing performance of hypoid gear is studied, this method break the limitations relying on experience to adjust the installation. Based on the machining principle and method of Gleason hypoid gears which machined by the HGT method, the mathematical model of machining was established, and the theoretical tooth surface equations were derived, on this basis, the hypoid gear as an example, the tooth contact analysis (TCA) was carried out considering assembly misalignment, the conclusion was drew that the influence to the position of tooth surface contact area and the magnitude of transmission errors are different when the Assembly misalignment affecting alone. This can offer certain reference for the installation and adjustment of hypoid gear pair in engineering practice.
Research on the Latest Maneuver Moment of Aircraft and the Minimum Safety Distance between Aircrafts in Free Flight
Authors: Zhang Zhao Ning , Liu Zhen , Zhang Dong Man
Published: April 2014

In order to guarantee the safety of flight in free flight environment, the minimum safety distance is needed to study. Considering the response delay of pilots and the lead time prior to initiating a maneuver, the latest maneuver moment is proposed. The position errors, which were affected by communication, navigation and surveillance (CNS) performances, were regarded as Brownian motion along the coordinate direction respectively. Then a model for collision risk in free flight environment was established basing on the stochastic differential equations. The latest maneuver moment can be obtained using dichotomy to optimize under the given Target Level of Safety (TLS). Introducing the time margin, the minimum safety distance is calculated. Finally, the feasibility of the model is verified by example.
Study on the Automotive Body Collision Damage and the Repair Method
Authors: He Hao Tao , Chang Shu Zhan
Published: April 2014

In order to improve the repair quality and efficiency of automotive body collision damage, and ensure the safety and reliability of the automobile after repairing, the paper discusses the integral body deformation characteristics based on the analysis of automobile impact force. Aiming at structural damage of integral body, the paper makes body damage repair process, analyzes the main factors which affect the body fixed and measurement, and puts forward a method which uses a multi-point pulling and the computer 3D measurement system to repair the damage. Finally, the validity of the method is verified by the collision case. The results show that the method can effectively control the position deviation of the body structure not more than 3mm, it can also improve the repair quality of automotive collision and reduce reworking rates effectively.
Analysis of an On-Orbit Replaceable Mechanism Based on ADAMS
Authors: Han Ming Lei , Cui Yan Bo , Zhang Jian Xin , Zhang Qiang
Published: April 2014

Based on the growing on-orbit servicing technology, replaceable techniques have been proposed agenda. Replaceable plug body is designed for such demand. On the basis of the structural design of the plug body, the kinetic analysis of the mechanism is made in ADAMS to test the feasibility of the structure. Establish Euler-Lagrange equations of the system to determine the impact of total energy of connecting rod on the mechanism, make great analysis to ensure that there is no coupling phenomenon, and optimize the design parameters.
Visual Modeling and Simulation Research of a Kind of On-Orbit Servicing Spacecraft
Authors: Li Bing Shuai , Zhang Jian Xin , Zhang Qiang , Wei Xiao Peng
Published: April 2014

On-orbit servicing technology is a novel aerospace technology, which has important economic and military value. Reference to two on-orbit servicing programs named Orbital Express and Phoenix, the paper provides visual modeling and on-orbit module replacement simulation approach for a type of spacecraft based on satellite tool kit (STK). A kind of universal method for STK model building is presented, which includes multi-software model transformation and manual encoding. Some key problems about model integration and post processing, that helps complex STK model building, has also been summarized. An on-orbit replacement task simulation system based on co-simulation of MATLAB and STK can provide effective technical support for the aerospace program.
A Supervisor Management and Evaluation System Based on Real-Time Location System
Authors: Jiang Han Chen , Lin Peng , Qiang Mao Shan , Fan Qi Xiang
Published: April 2014

Effective management and evaluation of on-site supervision staffs in large hydropower project is a key method to strengthen management, improve efficiency, and ensure the progress and quality of projects. A new method based on smart phones and real-time tracking technology was developed to manage and evaluate on-site supervision staffs. The location information of supervisors at the construction site is collected and uploaded to the server by smart phones containing a GPS data uploading application. The server stores and processes the data, and displays the location and the track of staffs on the web page to achieve real-time monitoring. The collected GPS data is deeply analyzed to identify the specific work context of supervisors and to build 3 indicators: Field Work Time, Effective Work Time and Effective Work Scope which are effective indicators to measure the workload. The feasibility of the method was verified by simulation experiments. Experimental results show that the proposed method can determine the real-time position of supervisors accurately, and identify their work contexts effectively. Extracted indicators meet the realities of situation. The method possesses abroad potential in large hydropower construction management.
A Novel Modulation Method for Modular Multilevel Converters
Authors: Wu Hao , Wang Ping
Published: April 2014

Modular Multilevel has been widely applied in Flexible HVDC, electric locomotives and PET(Power Electronics Transformers). The modulation method is important for the converter performance. This paper presents an improved modulation method for Modular Multilevel Converter.
Zone Selective Protection System with Multiple Power Sources
Authors: Chen Wei Gang , Du Feng , Zhuo Yue , Anheuser Michael
Published: April 2014

In the power system with multiple power sources, the fault current direction is not fixed. Therefore, the conventional ZSI protection is not suitable. Furthermore, the ZSI protection with fault current direction judgment function is required. In this paper, the R, L property based fault current direction judgment method is proposed. This method is verified based on the simulation and test result. The validation shows this method can correctly judge the fault current direction within shorter time than state of art method.
Modeling and Solving on the Solar Photovoltaic Cells Paving Optimization on Buildings
Authors: Cao Cheng Sha
Published: April 2014

The paving optimization of PV panels on buildings is an issue deserved to be studied. The issue is divided into three parts. First, choose the right PV cell aimed at maximum the PV generation. Second, determine the arrangement of the photovoltaic array aimed at the cost of all packages. Third, plan the model of photovoltaic array. At the end of the paper, the author gives the summary of the issue.
Assessment of Wind Turbine’s Power Curve Based on Performance Reliability Theory
Authors: Zhang Mu Yong , Rui Xiao Ming , Huo Juan , Zhao Yan Feng
Published: April 2014

Power curve of wind turbine is an important indicator in assessing unit performance and evaluating unit generation capacity. However, due to the ambiguity of assessment measure and lack of assessment methods, it is difficult to assess the power curve. For solving the problem, a method based on performance reliability is proposed in this article. Using the operating data recorded in SCADA, the measured power curve was tested, and according to the manufacturer promised power curve, based on performance reliability theory, a method of assessing power curve was proposed. Using the method provided herein, the power curves of 5 wind turbines, which were erected in a wind farm in north China, were assessed. Results show that the method is accurate, simple and practical. And it provides an important theoretical basis for power curve assessment of wind turbine in site.
A Predictive Model of SOFC Thermal Management Based on LS-SVM
Authors: Zhang Ying Ying , Huang Jing Dong , Zhang Ying
Published: April 2014

The thermal management is crucial to the safety and lifespan of Solid Oxide Fuel Cell (SOFC) generation system. For the model-predictive control design, a model of SOFC thermal management system is proposed on the least squares support vector machine (LS-SVM). The model is composed of some thermal modules including SOFC stack, combustor, heat-exchanger and thermal equilibrium apparatus. It predicts the temperature distribution in SOFC generation system by computing the electrochemical reaction in the stack, the gas flow and the heat exchange through the modules. Checked by the experimental data, the model can be used for system temperature fast prediction with high precision and strong generalization ability, which meets the requirement of the research on the online predictive control design of SOFC generation system.
Circuit Designs for an Automation Intelligent Electrical Distribution Terminal Unit Based on DSP
Authors: Hu Lian Jun , Song Hong , Zeng Xiao Hui , Zhou Wei Peng
Published: April 2014

An automation intelligent electrical distribution terminal unit is designed in the paper, making full use of the super calculation ability of digital signal processors. Whole hardware design and circuit designs, such as power conversion module, relay control module communication and data storage module etc, are discussed respectively in the paper. Researches on the reliability of the intelligent terminal unit are carried on finally. Results show that the unit can operate safely, stably and reliably.
Design of Arithmetic Operation Core in Embedded Processor for High Definition Audio Applications
Authors: Wei Zhen Qi , Liu Pei Lin , Kong Ji , Ying Ren Dong
Published: April 2014

To meet requirements of wider data width, higher throughput, and more flexibility, a specific arithmetic operation core (AOC) is designed for high definition audio application specific processors. The proposed core is capable of processing long bit-width operations, as well as short bit-width operations in parallel. A six-stage pipeline is applied in the architecture of AOC to support amounts of DSP operations, and a novel stage-skipping technique is used to improve the execution efficiency of instructions passing through the deep pipeline. Several DSP kernels and audio data decoding applications are used in performance evaluation of AOC. Experiment results show that the proposed operation core can achieve over 50% higher execution efficiency in audio applications than conventional high performance DSPs, providing an appealing solution for design of operation core for high definition audio applications.
The Development of Self-Test Box for Magneto Telluric Recorder
Authors: Chen Kai , Wei Wen Bo , Deng Ming , Zeng Di
Published: April 2014

MT method is one of the hottest points of geophysics. The higher quality original data, the better result MT method done, so some high reliability and better functional observe system is urgent demand. The instrument usually need self-test in field, in order to make sure of the reliability of the observe system. This paper introduced a kind of self-test box including GPS, DTCXO, MCU, FPGA and DDS, and relate single chip, FPGA and the upper user control software. After several field surveys, the generator of sinusoid signal, pulse signal and pseudo-random signal also clarifies the effectiveness of the self-test box, taking into account of time sync and pseudo-random signal processing.
Feasibility Study of Heat Utilization from Waste Oil Wells
Authors: Jin Hong Wen
Published: April 2014

This thesis makes a feasibility analysis of the method and effect of collecting geothermal energy from the waste oil wells, based on which it foresees the economic, environmental and social benefits brought by geothermal energy collection from the waste oil wells. With the advances of technology, geothermal energy collection methods will continue to improve, and bring even greater benefits.
Experimental Study by Using Drilling Core Materials Inversion Formation Rock Fracture Toughness Test Research
Authors: Zhu Lun
Published: April 2014

On the basis of Cliftons, hydraulic fracturing is established under the condition of cylindrical specimen fracture toughness expression. Using a self-built laboratory equipment, drilling core specimen for the fracture toughness test and obtain the relevant data. Based on the rock parameters inversion theory to construct the formation rock fracture toughness inversion objective function and optimization function. according to the drilling core material fracture toughness test data and the application of Matlab programming presented the formation rock fracture toughness.
Indoor Autonomous Navigation Technology Research Based on Lidar for Quad-Copter Aerial Robot
Authors: Bai Zhi Jun , Ji Yang Feng , Wu Liao Ni , Lin Qi
Published: April 2014

An indoor autonomous navigation system without GPS has been developed, based on the platform of quad-copter, which may fulfill the task of searching, identifying and entering the target room in a building with multi-rooms corridor. A pose sensor was utilized to stabilize the aircraft. The SLAM (Simultaneous Localization and Mapping) and plan route in unknown environment have been created by a 2D lidar. A calibrated monocular camera has been used to recognize different marks to make sure the vehicle to enter the target room. The test result showed that the indoor autonomous navigation technology based on lidar for quad-copter aerial robot is feasible and successful.
Nonlinear Control Approach of an Electromagnetic Bearing System
Authors: Liu Si Jia , Fan Yu , Di Jun , Liu Ya Jing , Qin Wei , Li Shuo
Published: April 2014

This paper proposes a two-electromagnet double degrees of freedom active magnetic bearing (AMB) model. Considering the nonlinearity between the electromagnetic force and the air gap, the authors put forward a nonlinear control approach based on feedback linearization which decouples and linearizes the original system. For the linearized system, pole placement strategy is used to achieve expected steady and dynamic performances. Simulation results show that this approach can successfully implement the decoupling and linearization, and is effective of different initial values.
Solar Energy Traffic Control Box Design
Authors: Bai Xue Feng , Cai Hua Nan , Qiu Shi , Li Pei , Song Xiao Na
Published: April 2014

With the global energy crisis and environmental degradation, for its unique advantages ,solar energy will replace the traditional non-renewable energy.In This paper,an application of solar power traffic box design development process, the charge and discharge circuit and the traffic lights control circuit hardware and software is discussed.In the charging control circuit part, battery charging control strategy is studied,A sample circuit of solar-electric charging system based on UC306 is built, charging effect is available. system adopts the STC89C51 microcontroller to control, the mainly,timer interrupt of single chip microcomputer is applied to correct traffic lights control .It is proved that the system can reach the demand of anticipative design and is stable.And also design the fan and the heating device for the traffic police to provide a comfortable working environment.
Design of the Three-Dimension Motion Platform Control System Based on EtherCAT
Authors: Kang Cun Feng , Li Shu Jin , Huang Xu Dong , Ma Chun Min
Published: April 2014

This design contains the EtherCAT fieldbus system and the PLCopen technology. The control system can not only achieve the motion target but also simulate the Computer Numerial System effectively. Hardware is constituted by embedded IPC, SanyoDenki servo drive and motor system, EtherCAT communication module and I/O module. The PLC program run under the Windows XP system, which install Codesys RTE, so that the whole control system improve the real-time character. Paper focuses on the structure of the control system and the design of the PLC program. The experiments and program results have proved that the control system working well，reaching the pre-set target．
Depth Analysis of Typical Accident with FTA Technology
Authors: Liu Xin Qiang
Published: April 2014

Aggressive train signal belongs to typical accidents in the process of train running; it has many influence factors, widely related departments and complex results. In this paper, we carry on the qualitative and quantitative analysis on the typical accidents using FTA technology, to estimate and calculate the structure, probability and critical importance degree. The affecting factor of the typical accident to analysis deeply. Then the analysis conclusion is carried out and the prevention strategies of the typical accident are given.
Collaborative Optimization Algorithm Based on the Penalty Function
Authors: Jiang Zhi Xia , Meng Pin Chao , Li Yan Zhong , Yin Wei Shi
Published: April 2014

The paper discusses the collaborative optimization problems with bounded. Based the penalty function the system-level optimization convert to a unconstraint programming. To the discipline-level optimization, the normalized weighted coefficients are used and combine relaxation factors to solve. It uses the relaxation factor to expand the feasible region, and possibly makes the iteration in the calculation process run inside feasible region. The data have shown that the algorithm has expanded the choice range of the initial points with high calculation accuracy and better algorithm stability.
An Analysis of Factors Influencing Foreign Language Self-Efficacy Based on C5.0 Decision Tree Algorithm in Data Mining
Authors: Li Xue
Published: April 2014

Based on inter-correlation and permeability among disciplines, the author makes an attempt to apply the information science to cognitive linguistics to provide a new perspective for the study of foreign languages. The correlation between self-efficacy and such four factors as anxiety, learning strategies, motivation and learners’ past achievement is analyzed by means of data mining and the extent to which the above factors affect self-efficacy in language learning is explored in this paper. The paper employs the decision tree algorithm in SPSS Clementine. C5.0 decision tree algorithm is adopted to analyze data in the study. The results are elicited from the researches carried out in this paper. The increased anxiety is bound to weaken learners’ motivation over time. It is obvious that learners have low self-efficacy. It is very important to employ strategies in foreign language learning. Ignorance of using learning strategies may result in unplanned learning with unsatisfactory achievements in spite of more efforts involved. Self-efficacy in foreign language learning may be weakened accordingly. Learners’ past achievement is a reference dimension in measuring self-efficacy with weaker influence.
Motion Key-Frames Extraction Based on Locally Linear Embedding
Authors: Dong Xu Long , Zhou Dong Sheng , Zhang Qiang
Published: April 2014

A motion key-frames extraction algorithm based on LLE was presented. First, the dimensionality of motion capture data was reduced by LLE method to obtain the low dimension feature curve. Second, the initial key-frames were obtained by extracting the local extreme points. In the end, according to the difference of feature curve amplitude and the threshold, the corresponding key-frames were inserted to get the final key-frames. A amount of experiments showed that the algorithm could generalize the content of original motion sequence on the basis of the compression ratio and low error rate.
Research on Methods of Improving Fatigue Property of Low-Strength Steel Welded Joints
Authors: Li Chun Run , Cao Zhen Ping , Fang Zong Tao
Published: April 2014

TIG dressing combined with ultrasonic peening was conducted on low-strength steel Q235B in this paper, the fatigue strength of which was compared with original welding state, TIG dressing and ultrasonic peening respectively. The results indicate that fatigue strength of welded joints treated by TIG dressing is increased by 36%, composite processing method 57% and ultrasonic peening 56%, with little difference between composite processing method and ultrasonic peening in loading condition R=0.1. Stress concentration factor at weld toe treated by composite processing method is less than that by ultrasonic peening and with less residual compressive stress relief, the former is more effective in improving fatigue life at high stress level. Residual compressive stress at weld toe treated by composite processing is close to ultrasonic peening method and the effect of stress concentration is weakened, the two methods don’t appear to be much different.
Input-to-State Stability of Multi-Agent Systems
Authors: Wang Xiao Li , Sun Qian , Chen Yu Min
Published: April 2014

In this paper, we mainly study input-to-state-stability (ISS) for the multi-agent systems with directed graph and the communication noise under switching interaction topologies, using the method of input-to-state-stability, input-to-state-stability -Lyapunov function. We point out the results of [5] is correct, but the proof of its main theorem has a small mistake, we give the proof by quite a different method.
Design of Intelligent Transportation Wireless Module Based on STM32F207
Authors: Wang Yu Ru , Li Ping , Lan Zhen Ping , Lei Dong Ming
Published: April 2014

This paper presents a system design of intelligent bus wireless transmission module based on STM32F207, and introduced the functional of each modules of the system. And how the system modules work on hardware and software and interfaces key technical is introduced in detail.
Research on the Applications and Characteristics of the Wireless Sensor Network
Authors: Qu Ming Zhe
Published: April 2014

A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. and to cooperatively pass their data through the network to a main location. The more modern networks are bi-directional, also enabling control of sensor activity. The development of wireless sensor networks was motivated by military applications such as battlefield surveillance; today such networks are used in many industrial and consumer applications, such as industrial process monitoring and control, machine health monitoring, and so on. The WSN is built of "nodes" – from a few to several hundreds or even thousands, where each node is connected to one (or sometimes several) sensors. Each such sensor network node has typically several parts: a radio transceiver with an internal antenna or connection to an external antenna, a microcontroller, an electronic circuit for interfacing with the sensors and an energy source, usually a battery or an embedded form of energy harvesting.
A Range Free Acoustic Localization Algorithm in Wireless Sensor Networks
Authors: Ai Jiang Shan , Chen Xiao Hong
Published: April 2014

For accomplishing acoustic location in wireless sensor networks (WSNs), a range free acoustic localization algorithm based on perpendicular bisector partition is proposed, taking into account of reducing computation complexity and reduce the interference of the background noise. Adopting a range free perpendicular bisector partition, the proposed method can find the sub-region of the source, and the time complexity is much lower than that of existing methods. According to extensive analysis on noise, the concept of noise sensitive region is derived. Experimental results show that the proposed method has a high localization precision and low complexity.
An Improved Task Scheduling Algorithm Based on Multi-QoS in Cloud Computing
Authors: Li Feng Song , Lou Yuan Sheng
Published: April 2014

For the issues of quality of service (QoS) in the cloud computing raised by users, this paper proposes a strategy for QoS classification and builds tasks' priority function modeling and through priority scheduling tasks, assigning tasks to the reasonable resources, and finally to complete the task efficiently, improve the utilization of resources.
Adsorption of Phthalates onto Nanofiltration Membranes: Effect of Solution Chemistry
Authors: Cheng Ai Hua , Wang Xu Dong , Wang Lei , Zhao Dan
Published: April 2014

Adsorption is ubiquitous during nanofiltration filtering which leading to overestimation of retention with adsorption interpreted as some of the initial retention. The adsorption of four phthalates (PAEs) (dietyl (DEP), di-n-butyl (DBP), dicyclohexyl (DCHP) and di-2-ethylohexyle (DEHP)), in different water matrices (Milli-Q water, simulated water and river water) by nanofiltration (NF) was examined using two types of nanofiltration membranes (NF90 and NF70). PAEs was added to different water matrices with concentration of 100 μg/L. The adsorption removal was calculated through mass balance during laboratory-scale cross-flow NF membrane rig working. The results showed that adsorption of PAEs on membranes was related to membrane pore size, substance characteristics, and coexisting nature organic matter (NOM). No significant effect of the PAEs concentration was observed. The order of adsorption removal in all water matrices was DCHP > DEHP > DBP > DEP. In Milli-Q water, the adsorption of PAEs decreased with increase of pH. The humic acid (HA) added in the simulated water increased the adsorption of PAEs on NF90 but decreased that on NF70, and the ions (K+, Ca2+) added in the simulated water affected the adsorption by influencing membrane structure, HA structure and interaction between membrane and HA, and the same result was obtained in the river water.
Study on Preparation and Properties of Composite Insulation Mortar
Authors: Chen Yu Peng , Fu Xing Hua , Tao Wen Hong , Dong Li Yuan , Yu Hai Tao
Published: April 2014

Orthogonal testing method was used to study the effects of fly ash, aggregate, weight ratio of water and material, way of incorporation of hydrophobic agent, on dry density, compressive strength, water absorption and softening coefficient of composite insulation mortar. The optimal ratio was obtained as 15% of the total weight is fly ash, 40% of the weight are aggregate, weight ratio of water and material are 1.1, 0.2% is hydrophobic agent (hydrophobic agent was added in the mixture). The main performances of the mortar were recorded as dry density was 220Kg/m3, compressive strength after 28 days was 0.50MPa, and thermal conductivity 0.0593W/(m•K). Microstructure of the composite insulation mortar was analyzed by SEM (scanning electron microscopy) and its function mechanism was studied preliminarily.
The Design of DC/DC Converter for Battery System in Electric Vehicle
Authors: Chen Su Hua , Shu Zhi Meng , Li Li Jun
Published: April 2014

We propose a simple and efficient DC/DC converter circuit topology, the asymmetrical half bridge DC/DC converter used in the field of electric vehicle battery system, and make switching devices working under the condition of soft switch converter. This can easily be done with the help of state equations and MATLAB/SIMULINK as a tool for simulation of those state equations.
Research of Best Excess Air Ratio of Boiler
Authors: Ma Cai Juan , Ma Yu Long , Wang Bo
Published: April 2014

In this paper, the method of analysis of multi-element sensitivity is used to establish a model to solve optimal excess air ratio of boiler’s operation. Its main influential factors include heat loss of exhaust fume, heat loss of incomplete burning the chemical (or flammable gases) and heat loss of mechanical (or solid) incomplete combustion. Each of the factors has different sensitivity on the optimal excess air ratio. In this paper, by using Least-squares model fitting and derivation of established function, its optimal solution is 1.38.
Research on Piston Design in Mechanical Engineering with Development of Support System Based on ANSYS
Authors: Zhang Xi Ai , Cui Hong Fei
Published: April 2014

According to the complexity and the loss of experts’ experience and long designers’ learning process of finite element analysis of compressor piston, the design of active knowledge support system based on ANSYS in the design of piston are developed. The system sets of expert experience and design skills in one, can make full use of push-pull technology and push technology for knowledge provide targeted knowledge assistance to the designers of different levels, experience knowledge inheritance is implemented, improving the sharing of experience and knowledge, the learning process knowledge is greatly reduced, truly achieve the high-end design software low starting point for the purpose of application.
Research on Engineering Materials with New Method of Type Configuration of Metamorphic Mechanism
Authors: Li Jia , Kong Jiang Yi , Liao Han Yuan , Hou Yu , Sun Liang Bo
Published: April 2014

The fomula between the numbers of link of kinematic chain,the numbers of prismatic pair,the numbers of connecting rod for each unit,ring numbers of kinematic chain,and degree of freedom of mechanism with 3 degree of freedom has been introduced in this paper by means of method of numerical calculation,the configuration of kinematic chain with F=2 also has been introduced,and an example of systhesis of metamorphic mechanism for this kinematic chain have been listed the kinematic chain and its isomers for these mechanism with 3 degree of freedom have been studied by using the method of topological graph,the kinematic chains and its isomers and have been obtained for 28 types of mechanism which have 3 degree of freedom and its numbers of link is less than 10,this method is usful for type systhesis of metamorphic mechanism. The study will greatly promote the mechanism used in engineering materials.
A Slope Stability Analysis Method Based on Unsaturated Seepage of Slope and its Comparison with Geo-Seep Software
Authors: Tian Dong Fang
Published: April 2014

Based on the FEM analysis of unsaturated slope seepage and strength of unsaturated soil, and adopted the assumption of rigid body limit equilibrium to calculate safe coefficient of landslides, a new slope stability analysis method is promoted and the calculation program called USSP is composed and verified. The method could consider the impact of rainfall and water change to slope stability. Compared with GeoSlope package, it is more practical in rainfall or variation of ground water level condition.
Geomechanics Study on the Influence of Water Level Variation on Landslide Safety in Three Gorges Reservoir Region
Authors: Tian Dong Fang
Published: April 2014

Up concave and linear slices are two basic geometric shapes of the landslides. In this paper, the unsaturated seepage fields of landslides are described by Richards’s equation and the safety of landslides are calculated by the Morgenstern-Prince method. The Influences of water level variation on landslide safety in Three Gorges reservoir region are discussed through two landslides. It indicates that,the impact of buoyancy is significant and related closely to water level change, and the most dangerous condition is stable high water level. To the slide which slice is line, the impact of permeation is significant and related closely to water change too, and the most dangerous condition is at the beginning of reaching the low water level.
Research on Seismic Performance of the Steel-Braced Frame
Authors: Hu Chang Jiao , Wang Xin Wu
Published: April 2014

With the purpose of comprehending the seismic performance of steel-braced frame system better and more comprehensivly, the paper overviewed and summarized the hysteretic performance,ductility and energy dissipation performance of the steel-braced frame based on a large number of abroad documents.The force was on the seismic performance of steel-braced frame in different supporting forms and the insufficiency in the research.
Research on Preparation and Properties of New Type Desulfurization Gypsum Block
Authors: Du Chuan Wei , Lv Ying , Li Guo Zhong
Published: April 2014

Desulfurization building gypsum was used as the main gelled material and fly ash was used as filler to prepare the new type desulfurization gypsum block. the mechanical properties of the new type desulfurization gypsum block was improved by adding compound excitation agent into the desulphurization gypsum-fly ash cementing material to stimulate its activity. The water resistant performance of the new type desulfurization gypsum block was improved through adding wax-alcohol compound waterproofing agent into it. Experimental results show that when the filling amount of fly ash was 20%(the quality of desulfurization gypsum), the impact on the strength of gypsum was minimal; when the dosage of compound excitation agent was 1.75%, the excitation effect of desulphurization gypsum-fly ash cementing material was best; when the dosage of wax-alcohol compound waterproofing agent was 0.4%, the water resistance of new desulfurization gypsum block was optimal.
Study on the Microstructure of RFA Cement Mortar after Modification
Authors: Wang Fu Xing , Lv Ying , Li Guo Zhong
Published: April 2014

The microstructures of fine recycled concrete aggregate (FRCA) after modifications in cement mortar were studied. The result indicated that the modification of RFA could strengthen the enhancement effect on microstructure when modified by 20wt% silica fume (SF) grout, 10wt% Polyvinyl alcohol (PVA) solution. After modification by SF grout and PVA solution, the thickness of interfacial transition zone (ITZ) of RFA cement mortar was decreased by 50% compared with the unmodified samples. The ITZ between RFA and cement paste was studied and the surface microstructure and sectional morphology of RFA was observed by scanning electron microscopy (SEM). Analyzing the modification mechanism and Building the superficial micro-structure model of RFA in cement mortar was carried out.
Research on Environment Materials with Variation Rule and Characteristic of Air Pollutants in Nanchang City
Authors: Yan Xi Feng , Wang Jing Lan , Zhou You Hua , Liu Feng
Published: April 2014

An analysis of the change regularity of the air pollutant in Nanchang city in this paper. According to the monitoring data of SO2, NO2 and PM10 from 1996 to 2012,the time characteristics and causes of SO2, NO2 and PM10 pollution were analyzed ,and the changing trends of the concentration of SO2, NO2 and PM10 in17 years were described by using Correlation analysis. The result shows that Nanchang air pollutants have the characteristics of obvious inter-annual variability, Rose and diurnal variation.
Effects of Substrate Temperature on Structure and Optical Property of Cu2O:N Thin Film Deposited by Reactive Pulse Magnetron Sputtering
Authors: Zi Xing Fa , Yang Wen , Yang Peng Zhi , Liu Rui Ming , Shu Xin Zhu
Published: April 2014

N-doped Cu2O (Cu2O:N) thin films were deposited on glass substrate by reactive pulse magnetron sputtering method using Cu target in a mixture of N2、O2and Ar atmosphere. Effect of substrate temperature on structure, surface morphology and optical properties of thin films were investigated by XRD, AFM and UV-Vis spectroscopy. The results showed that the single-phase of Cu2O(111) thin films were grown for substrate temperature < 200°C. The thin films deposited under different substrate temperatures are characteristics of 2D growth. Moreover,the optical band gap Egof thin film was in the range 2.54-2.58eV, and slightly decreased with increasing of substrate temperatures from RT to 400°C.
Research on Environment Materials with Soot Position Influence on SO2 Concentration Measurement
Authors: Zhao Yan Jun , Gao Cheng Bin , Qu Bin
Published: April 2014

The pollutant gaseous SO2 concentration is one of the most important parameters in national atmosphere environment monitoring system with properties of environment materials. SO2 emission can be calculated through measuring SO2 concentration. The common SO2 concentration measurement method of the stationary pollutant sources is NDIR. Soot in duct can absorb the measurement light intensity and the different acceptance light intensity of the receiver is caused by soot different position, so the attenuation of SO2 measurement light intensity is increased and the SO2 emission concentration measurement data is error. The different soot position interference is studied in this paper. Simulation results show that soot difference position can interference SO2 concentration measurement accuracy. The experiment is carried on. The experiment result shows that the measurement method can on-time obtains the soot different position interference and decreases SO2 concentration measurement error.
Applied Technology with a Simple Method of Modifying the Structure Mold under the Control of Newly-Added well Point Control
Authors: Xin Yu Xia , Zhao Lun , Chen Ye Fei , Zhou Tian Wei
Published: April 2014

in the 3D-geological modeling, there will be new wells added. This would require the modification of the structure model, the traditional method is to modify all the places that is in inconformity with the newly-added well stratified data in the 3D structural model according to the well point stratified data. If the number of the newly-added well is large, this method is more than just energy-consuming, the shape of the adjusted 3D-model is also very ugly and unnatural; the author has summarized a set of simple model construction method for the newly-added well point. This new method is less energy-consuming, meanwhile, the surface of the generated structure is natural and smoothing. This new method is applied to a oilfield ,which has achieved good results