bluuebunny/crossref_metadata_2025 huggingface dataset:
Corrosion de type crypto-karstique dans les karsts méditerranéens
Authors: Nicod Jean
Published: April 2014

Résumé. - L'étude d'un grand nombre d'exemples permet de préciser le rôle du processus de corrosion crypto-karstique dans les karsts méditerranéens. On distingue les cas de corrosion active, ralentie, ou héritée.
L’adieu au modèle de « l’homme soutien de famille ». Le présent postsocialiste à la lumière du passé socialiste
Authors: Javornik Jana
Published: April 2014

Le socialisme d’État a façonné l’héritage institutionnel des États membres de l’Union européenne postsocialistes. Il a non seulement permis à l’emploi des femmes de faire un bond important, mais aussi fait largement évoluer le rôle de l’État dans la famille. La recherche sur les régimes d’État-providence a donc tendance à traiter les pays postsocialistes comme un ensemble, unique et homogène. Cet article s’efforce de proposer une vision plus nuancée en analysant le passé socialiste de ces pays. Il montre que ces pays avaient adopté des modèles de socialisme distincts, entérinant et légitimant des politiques familiales et une répartition des rôles entre les genres différentes. Tous ne sont pas sortis de l’ère du socialisme d’État avec le même héritage ni avec la même expérience collective de l’organisation sociale de l’accueil des enfants et de l’emploi des femmes. Cette contribution invite par conséquent à poursuivre le débat sur « l’héritage socialiste commun » et sur le régime de protection sociale postsocialiste distinct.
Le besoin d’accueil atypique des enfants de moins de 6 ans dans le Pays du Bassin d’Arcachon – Val de l’Eyre
Authors: Gosset-Connan Stéphanie , Oustry Pascale , Peplaw David , Langaud Stéphane
Published: April 2014

FRE: Accueil jeune enfant , Expérimentation , Territoire , Partenariat CAF
Energy dissipation in multifrequency atomic force microscopy
Authors: Pukhova Valentina , Banfi Francesco , Ferrini Gabriele
Published: April 2014

The instantaneous displacement, velocity and acceleration of a cantilever tip impacting onto a graphite surface are reconstructed. The total dissipated energy and the dissipated energy per cycle of each excited flexural mode during the tip interaction is retrieved. The tip dynamics evolution is studied by wavelet analysis techniques that have general relevance for multi-mode atomic force microscopy, in a regime where few cantilever oscillation cycles characterize the tip–sample interaction.
Potential Role of Hyaluronic Acid on Bone in Osteoarthritis: Matrix Metalloproteinases, Aggrecanases, and RANKL Expression are Partially Prevented by Hyaluronic Acid in Interleukin 1-stimulated Osteoblasts
Authors: Mladenovic Zvezdana , Saurel Anne-Sophie , Berenbaum Francis , Jacques Claire
Published: April 2014

Objective.

To determine the effect of hyaluronic acid (HA) on proteolytic enzymes and bone remodeling mediators induced by interleukin 1β (IL-1β) and related to cartilage catabolism in murine osteoblasts.

Methods.

Osteoblasts were obtained from Swiss mice and cultured for 3 weeks. HA-treated osteoblasts were incubated with 100 μg/ml HA during the last week of culture, then stimulated with IL-1β (10 ng/ml) for 24 h. The expression of matrix metalloproteinases 3 and 13 (MMP-3 and MMP-13), ADAMTS-4 and ADAMTS-5, tissue inhibitor of metalloproteinases (TIMP), osteoprotegerin, and receptor activator of nuclear factor-κB ligand (RANKL) was determined by real-time polymerase chain reaction. MMP-3 and MMP-13 release was assessed by Western blot analysis.

Results.

IL-1β increased the mRNA levels of MMP-3 and MMP-13 and ADAMTS-4 and ADAMTS-5 and release of MMP-3 and MMP-13. Seven days of HA treatment significantly prevented the IL-1β-increased mRNA levels of MMP-3 (−61%, p < 0.01), MMP-13 (−56%, p < 0.01), ADAMTS-4 (−58%, p < 0.05), ADAMTS-5 (−52%, p < 0.01), and RANKL (−49%, p < 0.05), but not TIMP. As well, IL-1β-induced production of MMP-3 and MMP-13 was inhibited, by 27% (p < 0.01) and 40% (p < 0.01), respectively.

Conclusion.

In an inflammatory context in murine osteoblasts, HA can inhibit the expression of MMP and ADAMTS. Because HA can counteract the production of these mediators in chondrocytes, its beneficial effect in osteoarthritis may be due to its action on cartilage and subchondral bone.
Unsupervised Emotional Scene Detection from Lifelog Videos Using Cluster Ensembles
Authors: Nomiya Hiroki , Morikuni Atsushi , Hochin Teruhisa
Published: April 2014

An emotional scene detection method is proposed in order to retrieve impressive scenes from lifelog videos. The proposed method is based on facial expression recognition considering that a wide variety of facial expression could be observed in impressive scenes. Conventional facial expression techniques, which focus on discriminating typical facial expressions, will be inadequate for lifelog video retrieval because of the diversity of facial expressions. The authors thus propose a more flexible and efficient emotional scene detection method using an unsupervised facial expression recognition based on cluster ensembles. The authors' approach does not need to predefine facial expressions and is able to detect emotional scenes containing a wide variety of facial expressions. The detection performance of the proposed method is evaluated through some emotional scene detection experiments.
Improvement of Estimation of Objective Scores of Answer Statements Posted at Q&A Sites
Authors: Yokoyama Yuya , Hochin Teruhisa , Nomiya Hiroki
Published: April 2014

To eliminate mismatches between the intentions of questioners and respondents of Question and Answer (Q&A) sites, the authors have clarified the characteristics of the question and answer statements. It has been shown that the impression of the statements could be captured by nine factors, and the factor scores could be estimated from the feature values of the statements. Here, the objective scores of answer statements are provided. So far the authors have tried to estimate the objective scores of answer statements through multiple regression analysis. They are estimated from the factor scores estimated by using multiple regression formulas already obtained. As a result, with the consideration of natural logarithm, objective scores of the statements on love counseling & human relationships could be estimated good. The estimation accuracy of the statements on Yahoo! Auction and PC, however, is required to be improved. Therefore, this paper tries to improve the estimation accuracy of objective scores of Yahoo! Auction and PC. Here, the authors adopt Steven's power law as well as Fechner's law as new explanatory variables. In considering multicollinearity, the authors selected as many explanatory variables as possible. As a result, objective scores of the statements of PC are estimated fairly good.
A Comparative Analysis of Reliability Assessment Methods for Web-Based Software
Authors: Park Jinhee , Seo Yeong-Seok , Baik Jongmoon
Published: April 2014

As web technology has advanced, many business software applications are built on the web. In such web environment, it has become very important to ensure the reliabilities of web-based software systems such as Software as a Service (SaaS) or Service-Oriented Architecture (SOA) based systems because service failures in those systems may have an effect on extensive users. With the comparison to the reliability studies on traditional software, there are only a few studies on the reliability of web-based software. The dynamic environment of the web makes it much more complicated to assess the reliabilities of web-based software. In this paper, the authors investigate the characteristics of reliability assessment methods for web-based software such as SaaS and SOA based software systems. The authors also evaluate those methods based on hypothetical execution scenarios to analyze the strengths and weaknesses of each method. This analysis helps us to identify remaining problems on the reliability research in the web environment and provides insight into possible solutions.
Construction of Shadow Model by Robust Features to Illumination Changes
Authors: Ishida Shuya , Fukui Shinji , Iwahori Yuji , Bhuyan M. K. , Woodham Robert J.
Published: April 2014

Methods in the field of computer vision need a shadow detection because shadows often have a harmful effect on a result. A new shadow detection method is proposed in this paper. The proposed method is based on the shadow model. The model is constructed by robust features to illumination changes. The proposed method uses the difference of chrominance (UV) components of luma chrominance (YUV) color space between the background image and the observed image, Normalized Vector Distance, Peripheral Increment Sign Correlation image and edge information. These features remove shadow effects in part. The proposed method can construct the effective shadow model by using the features. In addition, the result is improved by the region based method and the shadow model is updated. The proposed method can extract shadows accurately. Results are demonstrated by the experiments using the real videos.
Chinese Electric Vehicles (EVs) and Internal Combustion Engine Vehicles (ICEVs) Prediction Based on the Double Species Model
Authors: Fu Shi Jun
Published: April 2014

With climate change and energy security being growing concerns, Electric Vehicles (EVs) growth has taken on an accelerated pace. This research aims to predict Chinese EVs and Internal Combustion Engine Vehicles (ICEVs) stock in the forth coming 40 years. We introduce the double species model to fulfil this program, by solving the model and computer simulating, two trajectories for their growth under different scenarios400 vehicles and 500 vehicles per thousand people at 2050 year are obtained. It reveals that, (i) ICEVs is already in booming stage and will last 16-18 years. (ii) EVs has a golden stage which will last 13-14 years, and before this prospective stage, there is an initial slow growth period which will probably last 10-11 years. (iii) Under each scenario, the difference between EVs and ICEVs stock at year 2030 is 8.63%-10.13%, which confirms that Chinese ambitious EVs development program may be realized if government provides strong policy supports on this new industry. Its contribution is a new method to predict EVs as well as getting two interactive trajectories for EVs and ICEVs growth.
Cetyltrimethylammonium Bromide-Assisted Hydrothermal Synthesis of Mixed-Phase TiO2 Nanorod and its Photocatalytic Activity
Authors: Sun Bin , Xu Xiu Ling , Zhou Guo Wei
Published: April 2014

TiO2nanorods were successfully fabricated via hydrothermal method using cetyltrimethylammonium bromide (CTAB) as the structure-directing agent. The synthesized samples were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field-emission scanning electron microscope (FESEM). The study showed that as-prepared samples were the mixed crystalline phase of rutile and brookite. The weight fraction of rutile and brookite in the mixed-phase were accurately tuned by changing the concentration of CTAB. The morphology of prepared samples was TiO2nanorods with the diameter of 2530 nm and the length of 80150 nm. The samples for degradation of papermaking wastewater under ultraviolet light irradiation showed better photocatalytic activity than the commercial Degussa P25. HRT-3 prepared from CTAB: TBT molar ratio of 0.48 exhibited the highest photocatalytic activity, achieving 47.2% CODcrremoval rate and 89.5% chroma removal rate under irradiation 12 h.
The Optimization Methods Based on Big Data Technologies of Power System Protection
Authors: Xue Hao Ran , Li Bin , Ji Kun , Wang Zhi Qiang , Kong Xiao Jun
Published: April 2014

Power system protection is one important work which relate to security and stability of the power system. Power system relay protection is a very important part of power system and it relates to the power system security and stability. The time for fault reaction of power system protection determines the reliability of system protection and sensitivity. This paper mainly for the malfunctions of power system, we used the techniques of big data to reduce the size of the power network. We used the distributed computation and parallel computing to calculate fault calculation, topology analysis and setting calculation, which can shorten the operation time of protection equipment. At the same time, it also can improve the quality of the power and it can reduce the time harming the equipment and ensure the stable operation of the system.
Admittance Elements Comparatively Amplitude Trend Analysis of Thyristor Controlled Reactor
Authors: Zheng Wei Jie
Published: April 2014

Thyristor controlled reactor was important reactive compensator which is widely used in power system, while it also a harmonic source which is necessary to be researched, especially the harmonic characteristics and harmonic amplitude changing trend, which is important to model, simulate and improve the equipment design. The paper analysed the admittance elements comparatively amplitude trend of thyristor controlled reactor.The research result will help to compensate or reduce the harmonics generated by thyristor controlled reactor, which also will be helpful to model and simulate other thyristor controlled reactive power equipments.
MPPT Control Method Using Boost Type DC-DC Converter for PV Generation System with Mismatched Modules
Authors: Huang Cheng Yang , Itako Kazutaka , Mori Takeaki , Ge Qiang
Published: April 2014

Nowadays in a household PV generation system, it is generally connecting PV modules in series and then output to the power-conditioner. However, when PV modules are mismatched, it will lead to a wrong maximum power point tracking (MPPT) to all modules and a power decreasing of the whole system. Aiming at this problem, this paper presents the idea which improves the MPPT without changing the conventional power-conditioner, by adding a boost type DC-DC converter behind each module. Simulations of PSIM and experiments are taken to prove this theory. The result shows that, by this idea, the generated power of the conventional PV generation system can be greatly increased under the condition of mismatch.
Very-Short-Term Load Forecast for Individual Household Based on Behavior Pattern Induction
Authors: Hsiao Yu Hsiang
Published: April 2014

Electricity demand (load) forecasting has been recognizing as the key issue for achieving economic, reliable, and secure power system operation and planning. In the existing studies, two indentations are found in application level and methodology level, respectively. In the application level, the load forecasting for individual household is few. Most applications focus on large spatial region. In the methodology level, the importance of user daily schedule pattern is ignored in the development of load forecasting methods. In this study, a novel approach to model the load of individual household based on context information and daily schedule patterns is proposed. The daily schedule pattern types are induced from daily electricity consumption behaviors, and context features from several sources are collected and used to establish a rule set for classifying a given day into a specific behavior pattern type. Also, an electricity consumption volume prediction model is built for each behavior pattern type to predict the load of specific time point with in a day. A household very-short-term load forecasting problem which comes from Taiwan is implemented in this study. The results show that the proposed approach can get a better accuracy than other methods.
Particle Swarm Optimization for Position Control of Induction Motor
Authors: Chiang Chao Lung
Published: April 2014

This paper proposes a position control of induction motor using particle swarm optimization (PSO) and fuzzy phase plane controller. Fuzzy membership functions, phase plane theory and the PSO are employed to design the proposed controller (FPPC) for controlling the position of an induction motor, based on the desired specifications. The proposed FPPC has merits of rapid response, simply designed fuzzy logic control and an explicitly designed phase plane theory. Simulations and experimental results reveal that the proposed FPPC is superior in optimal position control to conventional PI controller.
Association Rule Mining Based on Multidimensional Pattern Relations
Authors: Chen Yu Ke , Zhao Tai Xiang
Published: April 2014

Most incremental mining and online mining algorithms concentrate on finding association rules or patterns consistent with entire current sets of data. Users cannot easily obtain results from only interesting portion of data. This may prevent the usage of mining from online decision support for multidimensional data. To provide adhoc, query driven, and online mining support, we first propose a relation called the multidimensional pattern relation to structurally and systematically store context and mining information for later analysis.
The Study of Trust Evaluation Model Based on Improved AHP and Cloud Model in IoT
Authors: Pang Xi Yu , Wang Cheng
Published: April 2014

Because nodes in the loT(Internet of Things) are widely distributed and most of them are unattended, so single node is vulnerable to be attacked and destroyed. Once one node is destroyed or attacked, the whole loT will be faced with tremendous security problems. This paper proposed a Trust Evaluation Model of loT based on AHP and Backward Cloud Model. In the model, in order to be solve the problem that nodes in loT have limited resources, the paper made use of the improved AHP(Analytic Hierarchy Process) and Reverse Cloud Model method, which can work with simple calculation and few resources. In the last, we simulate the method using omnet++ and simulation result show that the model can evaluate the trust value of the malicious node that executes bad communication behaviours fast and also reduce the possibility of wrong judgment.
Study of N-TiO2 Photocatalysts and their Catalytic Activities under Simulated Sunlight
Authors: Wang Sheng Jun , Wang Lin Lin , Zhang Wen Yu
Published: April 2014

N doped TiO2 was prepared by methods of sol-gel, precipitation, and temperature programmed nitridation (TPN) with NH3, respectively. The physical structure and chemical properties of the prepared N-TiO2 were characterized by DRS, XRD, XPS, and EPR spectra techniques. The result of XRD illustrated that all the samples were anatase, and no rutile or brookite phase. XPS and EPR indicated that N-TiO2 prepared by precipitate exist Ti3+ on the surface of TiO2. DRS pattern demonstrated N doping lead to the band gap narrow of all the samples, and the smallest band-gap energy of the samples prepared by precipitation was about 2.45eV. The photocatalytic activities were investigated by the photocatalytic degradation of methylene blue (MB) under simulated sunlight, and the highest activities reached to 75% during 120min.
The Determining of Basic Probability Assignment for D-S Evidential Theory Based on Rough Set
Authors: Tian Ran , Li Bin Yong
Published: April 2014

Evidence theory is an effective tool in dealing with uncertainty questions. The evidence comes mainly from experts,but the expert knowledge and experience is limited. There may be a certain degree of subjectivity. To solve this problem,based on the relationship of the rough set and evidence theory, this paper through the strength of decision rules and defines the extension rules of decision rule intensity, the new basic probability distribution function is constructed onthe known rules of recognition framework, avoiding the subjectivity of basic probability assignment, finally being more objective and accurate results lay a foundation, and in the last instance the validity of this method are presented.
Robust Optimization Study of Recycling Network for Electronic Waste
Authors: Zhang Zheng , Ma Hui Min
Published: April 2014

Considering the uncertainty of waste electronic recovery quantity in consumption areas and recycling rate in dismantling centers, a robust optimization model for single-cycle waste electronic recycling network with capacity constraints is established to determine the number and location of the facilities, the flows between each facility. A numerical example is provided to demonstrate the feasibility of the model.
Photoanode of Photoelectrochemical Biofuel Cell Sensitized by Magnesium Tetraphenylporphyrin
Authors: Wang Kun Qi , Wang Wei Ling , Zhu Qi Fan , Yang Huan Xin
Published: April 2014

Magnesium tetraphenylporphyrin (MgTPP) had been synthesized with tetraphenylporphyrin (TPP) and magnesium acetate according to reported paper. The photoanode of photoelectrochemical biofuel cell (PEBFC) was constructed including TiO2 conductive film and photosensitizer Magnesium Tetraphenylporphyrin. The interaction between MgTPP sensitizer and TiO2 was evaluated by X-ray photoelectron spectra, indicating that the MgTPP adsorbed on TiO2 was easier to accept electrons compared with synthesized MgTPP itself. The spectroscopic properties of synthesized MgTPP and MgTPP-sensitization TiO2 in dichloromethane solution were obtained by Uv-vis absorption spectra, demonstrating that the characteristic absorption peaks of MgTPP on TiO2 displayed slight red shift compared with synthesized MgTPP. The photocurrent action spectrum evidenced that current of the PEBFC originated from MgTPP-sensitization TiO2 photoanode.
Application Topsis Analysis on Aviation Anti-Submarine Aircraft Performance Evaluation
Authors: Yang Ming Hua , Wang Guo Gang , Zhang Ling , Han Xiao Ping , Liang Tao
Published: April 2014

Use Topsis law on aviation anti-submarine aircraft maneuvering performance evaluation for assessment, evaluation index set to establish anti-submarine aircraft maneuverability, the establishment of a data matrix samples to be evaluated, the results consistent with the actual situation. This method effectively reflects the comprehensive and objective maneuverability of the aircraft, aviation anti-submarine aircraft performance evaluation provides a new way.
Finite Element Analysis on the Structure Strength of Air Cushion Vehicle
Authors: Liu Ning , Ren Hui Long , Li Jian Zhang , Jia Lian Hui
Published: April 2014

Air Cushion Vehicle is widely used in the field of military and civil ship in recent years for its characteristic high speed and amphibian. Since the yield strength of aluminum sheet with stiffeners is relative low after welding, to ensure air cushion vehicle has significant strength under normal load and to avoid severe damage under adverse sea conditions, model loading test and theoretical prediction is used to determines the design values of wave loads, and FEM analysis with direct calculation method under the different load cases including the total longitudinal strength, cross-strength, torsional strength and shear strength, and then getting the structural response results. This essay gives several suggestions for the design according to the calculated results of stress and its deformation characteristics.
Analysis of a Transmission Tower Structure with Dynamic Elastic-Plastic Time History Method
Authors: Xu Zhong Gen , Qin Kang , Deng Chang Gen
Published: April 2014

The idea, procedures and equation of dynamic of analysis of an actual power transmission tower system by dynamic elastic-plastic time history were introduced. Considering P-DETA effect, the base shear forces and curves of top displacement time history were obtained. P-DETA effects on seismic performance of the transmission tower were calculated. The paper can be reference for the analysis of static elastic-plastic.
Research of Seismic Design Method of RC Frame Structure Retrofitted by FRP
Authors: Yang Dian Zhong , Peng Ya Ping , Xie Qun
Published: April 2014

According to the research data and achievements home and abroad, this paper puts forward the practical seismic design process and method of RC frame structure retrofitted by FRP, to promote the application of FRP in the field of RC frame retrofitting. And the ductility design of the column, the reinforcement design of the node area and the structures integral seismic action are discussed, providing a reference for future research and engineering application.
Seismic Reinforcement Application of Buckling-Restrained Braces in the Bottom Frame-Shear Wall Structure
Authors: Liu Pei Song , Bai Liang
Published: April 2014

Bottom frame-shear wall structure is a kind of special structure, due to the inharmonious relationship between the frame and masonry walls in bearing lateral capacity and deformation ability, the difference of vertical stiffness in the bottom frame-shear wall structure is bigger, so the structural seismic performance is poor. A six layer bottom frame-shear wall structure seismic strengthening project is established in order to contrastive analyze two kinds of reinforcement scheme, which are additional RC shear wall and additional buckling constraints. Calculation and analysis results show that through setting buckling constraint support in the bottom layer of reinforced concrete frame and selecting rational mechanical parameters, can increase lateral stiffness, reduce the lateral deformation and realize the effect of multichannel fortification. At the same time, the advantage of easy to implement is belong to bottom frame-shear wall structure.
Damage Assessment of Historic Buildings Hit by Earthquake
Authors: Boscato Giosuè , Dal Cin Alessandra
Published: April 2014

The Church of Gesù and the tower of the Cathedral were stricken and damaged by Emilia-Romagna earthquake sequence of May 2012. This paper presents the procedure for the structural identification of the most widespread types of religious monuments. The dynamic behavior was analyzed using the ambient vibrations test to measure the dynamical properties (mode of vibration, frequencies, displacements and damping ratios) of the constructions using a modal identification of output-only systems. The operational modal analysis OMA has been carried out to identify the modal characteristics through poly-reference Least Square Complex Frequency-domain (pLSFC) estimator. The global structural health monitoring was carried out to define the real dynamic behavior of the damaged constructions that are subjected to different mechanism. These researches are useful for the structural rehabilitation and to define the possible changes in the structural behavior.
Study on the Comparison of Ground Response Analysis for Class І Site
Authors: Li Xiao Fei , Sun Rui
Published: April 2014

In order to test the applicable of the two equivalent linear seismic response analysis procedures SHAKE2000 and LSSRLI-1 for class І site, 21 underground strong motion records were selected from 11 stations of KiK-net as input earthquake motions. By using these two programs to calculate the peak ground acceleration, soil maximum shear strain and acceleration response spectra. By comparing the results of the two procedures and the measured results to evaluate the proximity of these two methods and then judge which program is closer to the real situation. Studies have shown that in class І site, the results of SHAKE2000 and LSSRLI-1 differ little; but according to the measured records, there are some differences between the two programs results and the measured records. While no matter comparing from which side, SHAKE2000 is closer to the earthquake records.
Research on Seismic Displacement Response of Cable Stayed Bridge without Back Stays
Authors: Lv Liang , Liang Bin , Wang Wen Sheng
Published: April 2014

Seismic displacement response of cable stayed bridge without back stays was studied in this paper. Based on the cable stayed bridge without back stays on Zhenshui Road in Xinmi City, finite element method (FEM) was applied to calculate and analyze natural vibration and peak displacement response of the structure. The results show that with regard to mid-span and consolidation of pier and main tower, uniaxial seismic wave input results in peak displacement response of corresponding direction is bigger than that of any other direction. Peak displacement response of the top of the main tower is bigger than those of mid-span and consolidation of pier and main tower in any seismic wave input cases, which indicates that the top of the tower needs to be focused in the process of design and construction. Seismic wave along triaxial direction has the biggest impact on the structure.
Keywords: cable stayed bridge without back stays; seismic displacement response; seismic wave input; peak displacement response
Comparative Study on Seismic Design Method of High-Piled Wharf of Different Depth in China and Japan
Authors: Song Bo , Wang Hai Long , Liu Shi Jing
Published: April 2014

As many high-piled wharves are in an earthquake zone in home and abroad, so it is vitally important to conduct seismic design to ensure them with a certain seismic capacity. Studies showed that the wharves with straight piles have better seismic performance than wharves with oblique pile. According to the standards in China and Japan, this paper will compare the indicators of seismic performance, including the calculation length of piles, seismic inertial force, bearing capacity etc. The difference between Chinese code and Japanese code will be confirmed through comparison. The comparative results show that the differences mainly in the embedded solid position and the horizontal force etc. Additionally, according to the comparison of different depth of high-piled wharf, there is an increasing trend of the indicators with increasing depth of water.
Reliability of Pile Foundation of Offshore Jacket Platforms Subjected to Seismic Action
Authors: Shen Zhao Wei , Wang Xiao Hong , Jin Wei Liang
Published: April 2014

Pile foundation of offshore platform is very important. Earthquake is devastating and unpredictable.It is important to assess the reliability of pile foundation of offshore jacket platforms subjected to seismic action. This paper presents the approach to calibrate of reliability of pile foundation subjected to seismic action. The combination of loads are mainly investigated. The reliability of pile foundation of of QK18-1 in Bohai Bay related to 25-year reference period is3.37, which is close to the conclusion of some existing researches. The results could provide significant reference for the design of offshore jacket platforms.
Experimental Study of Reinforcement Effect of Injured Frame Joints under Different Axial Compression Ratio
Authors: Fang Ming Xin , Yang Zhi Yong , Chang Zheng Fei , Liu Shun Hui , Wang Gang
Published: April 2014

In this paper, reinforcement effect of the seismic performance of injured flat cross-shaped reinforced concrete frame joints under different axial compression ratio are analysed systematically through experiment.The research focuses on the relationship between the effect of reinforcement with carbon fiber and axial compression ratio. Three identical joints under different axial compression ratio are loaded by low cyclic load in the experiment to study the seismic performance of them.
Analysis on the Main Factors Influencing the High-Speed Railway Passenger Flow
Authors: Huang Yuan , Song He , Jia Chun Yan
Published: April 2014

With the rapid development of our national economy, the fast process of city, regional passenger demand is increasing rapidly, high-speed railway emerging as the times requiring. High-speed railway has many advantages in essence and also some disadvantages. How to use its advantages, how to avoid their disadvantages, is important for the advantageous to improve the interests of the company on high speed railway transport department and railway sector, as well as the social development. Through the way of questionnaire survey, statistics and analyzes the main factors affecting the High-speed Rail passenger flow, provides more active mode of operation for the High-speed Rail department. This paper raised the urgent and realistic basis to improve the service level.
Establish of the Mutual Relation of Resilient Modulus and CBR in Loess Region of Shanxi Province
Authors: Wu Xi Rong , Zhu Li Li
Published: April 2014

The loess test road of four highways in Shanxi Province selected. Through the contrast and analysis the data of resilient modulus and CBR on field, the paper presents the conversion relationship between resilient modulus and CBR for north and south shanxi province. The conversion relationships provide reliable basis for the resign of pavement construction. Keywords: subgrade soil; resilient modulus; CBR; correlation
Experiment of Slurry Shield Tunnel Recycling Waste Sand in Sand-Pebble Layer
Authors: Pang Chen Rui , Wen Xin
Published: April 2014

Waste soil progressing in shield tunnel construction should occupy large space, on the other hand, do harm to city environment. If the waste sand in silt and fine sand layer can be used as sand source of synchronous grouting, it will bring benefits for the enterprise and society. In indoor experiment, we select waste sand in different layers, sieved as sand source, then use the waste sand to produce slurry and compare their strength with the construction slurry’s. The study found, sieved waste sand in silt and fine sand layer can be used as sand source for making synchronous grouting slurry.
Review of Applied Study for Red Clay in Highway Subgrades
Authors: Ding Jin Xi , Meng Yun Wei
Published: April 2014

The cause of formation, the hazardless and distribution in our country of red clay is presented. The engineering characteristics of red clay are related. During a number of entity highway engineering, various kinds of treatment methods are recounted and the applicability is analyzed. Some suggestions are proposed for further study in highway engineering of red clay clay.
Sliding Mechanism Analysis and Treatment for Rock Pile Subgrade in GuiZhou Province
Authors: Zheng Jia Jia , Wu Li Jian , Guo Run Hua
Published: April 2014

There are a lot of rock pile body around GuiZhou mountain area, highway construction will pass by these bad geological body inevitably, the fill subgrade built on rock pile body is liable to instability and slip. Take a section fill subgrade of YuKai highway as an example, the sliding mechanism of fill subgrade on rock pile body was analyzed, the scientific division and comprehensive treatment measures were proposed for the landslide.
Vibration Analysis of Simply Supported Beams Traversed by Uniformly Distributed Two-Layer Spring-Mass System
Authors: Yang Yu , Wang Yan , Yang Yun Fang
Published: April 2014

Vertical vibration of identical simply supported bridges traversed by a train with uniformly distributed mass is investigated in this paper. The train with passengers onboard is simplified as a uniformly distributed two-layer spring-mass system as well as the bridges are simplified as consecutive simply supported Euler-Bernoulli beams. To analyze dynamic responses of the train and the bridges, the dynamic governing equation of the system is obtained and solved by a specific linear interpolating method and numerical integral methods. The result graphs indicate that dynamic responses of both beam and train carriage increase along with the mass ratio of bogie to car.
Effect of Micron Fly Ash and Nano Calcium Carbonate on Properties of Styrene-Butadiene-Styrene Copolymer Modified Asphalt
Authors: Zhou De Jie , Han Nian Feng
Published: April 2014

Composite modified asphalts with micron fly ash/SBS and nanocalcium carbonate (nanoCaCO3)/ SBS were prepared respectively by melt blending. The ageing properties and physical properties of micron fly ash/SBS and CaCO3/SBS modified bitumen were investigated. The results demonstrate that micron fly ash/SBS modified bitumen exhibited an increasing softening point, a decreasing penetration and a decreasing ductility. Compared with that of SBS modified bitumen, the anti-aging property of the micron fly ash/SBS modified bitumen becomes worse. Effects of the nanoCaCO3 on the properties of SBS modified asphalt appear as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-aging property of the CaCO3/SBS modified asphalt was better than that of the SBS modified asphalt.
Study on the Anti-Cracking of GFRP Bars Asphalt Concrete Bridge Deck Pavement under the Vehicle Load
Authors: Feng Xiao Xin , He Xiong Jun , Yang Zhu Hua
Published: April 2014

the mechanical analysis of bridge deck pavement is limited at home and abroad.As is known to all,when we referred to the load-carrying capability of a bridge, the deck pavement is surely the weakest part. It is necessary to analyze the distribution of stress on bridge deck pavement, then design the pavement reasonably. In this paper, the model of bridge deck structure can be analyzed using solid model of bridge deck established in the principle of the finite element software. The analysis mainly includes two sides: one is analyzing the tensile stress of the deck caused by vehicle from Horizontals and verticals;the other is about finding the position of the most unfavorable load, and replacing corrosion-resistant GFRP with common steel ,then establishing GFRP reinforced asphalt bridge deck solid model. The author will analyze the setting states and the most suitable location of GFRP bras under the vehicle load on the bridge deck. At last we make the conclusion that the GFRP bars can effectively undertake the stress to prevent cracking.
The Application of High Content SBS Modified Asphalt Waterproof Layer in the Project of Jing-Jin-Tang Highway's Bridge Deck Maintenance
Authors: Zhang Hai Feng , Wei Lian Yu , An Nan
Published: April 2014

Based on the project of Jing-Jin-Tang Highways bridge deck maintenance, this paper will study the raw material, production technology and construction control of high content SBS modified asphalt waterproof layer. According to the long-term follow-up inspection and the test data to constructed project, we could conclude that high content SBS modified asphalt waterproof layer has a good waterproof performance. It prolongs the service life of the bridge deck greatly and ensures the safe operation of the bridge.
The Effect Analysis of the Thin-Walled Tubular Pile Technology Used in the Foundation Treatment of the High-Filling Railway Freight Yard
Authors: Yu Jie , Chu Tian Yue , Gong Quan Mei
Published: April 2014

On the background of one railway freight yard in Xiao Yong railway , and firstly the use of thin-walled tubular pile is determined in railroad yard through the comparison with other methods in the soft foundation reinforcement. Secondly, the effect of the soft-soil foundation reinforcement combined with the numerical simulation and the measured data is analyzed. Finally, it is defined that the thin-walled tubular piles has good value in the treatment of the high-filling railway yard, and it also can provide a new method for the improvement of the soft subgrade in railway freight yard.
Experimental Study on Early-Age Crack of RC Using TSTM
Authors: Shi Nan Nan , Huang Da Hai
Published: April 2014

Thermal stress is a major cause of early-age crack of massive concrete structures. In order to analyze the influencing factors of concrete crack under thermal loads, a series of tests were conducted using the improved Temperature Stress Testing Machine (TSTM). Effects of temperature on crack resistance of concrete were studied on different concrete placing temperatures and curing temperatures. Meanwhile, the roles of reinforcement on concrete crack resistance and crack-width limitation were quantitative analyzed, which compare cracks of plain concrete and reinforced concrete with the same mix proportion. The results indicate that reinforcement can improve the crack resistance of the structures by approximately twenty percents, which against the engineering experience. After concrete cracks, the cracks photos show that reinforcement can induce the smaller cracks formation, and the crack width of reinforced concrete is about 1/10 of the plain concrete crack width.
The Practice of Aluminum Plate Material in Modern Traffic Architecture
Authors: Li Huan , Feng Zhen Yi , Li Yan Ju , Xiao Yu , Zheng Min
Published: April 2014

With the rapid development of China's railway construction, the modern traffic architecturee used aluminum plate material in decoration more widely. This paper describes the different types of aluminum plate materials, and then introduces the function and the economy of the ceramic aluminum plate in modern traffic architecture.
Analysis on Mechanism of Coupling Fields of Seepage and Stress and its Modeling
Authors: Wang Fei Han , Yan Guo Xin , Zhao De Jun
Published: April 2014

In rock and soil media, seepage and stress fields are interacting and interrelated system. Analyzing on mechanism of seepage field acting on stress field and on mechanism of stress field acting on seepage field in rock and soil media, it established mathematical model of seepage field with stress field acting on and mathematical model of stress field with seepage field acting on. According to coupling mechanism, it gave mathematical model of coupling seepage field and stress field and corresponding steps of FEM
Analysis on the Stress of Arch Dam Heel
Authors: Wang Chun Tao , Lv Hui , Wu You Ping
Published: April 2014

Because of the characteristic of the elastic theory, the stress on dam heel is infinite, which makes the stress larger and larger with the increasing of finite element density. In view of this the dam heel stress tendency method is presented. This method uses the envelope of stress curves to replace real stress curve. In order to verify the method, Xiaowan high arch dam model under the water pressure has been set up, while the FEA modal is set up at the same time. The result of model experiment is close to the result form dam heel stress tendency method, which shows that the method is correct.
Experimental Study on Glued Bamboo Beam
Authors: Zhang Ling Fei , Li Hai Tao , Su Jing Wen , Chen Xiu Yu , Liu Wei , Xu Min Hui , Dai Jian , Wu Fan , Song Zhao , Li Bin , Zhou Zheng Qiang , Chen Jian
Published: April 2014

This paper illustrates the experimental study on the glued bamboo beam. The beams are characterized by the brittle tensile damage. The elastic modulus for both the compression and the tension of the glued bamboo are equal to each other. The average strain for the cross-section of the glued bamboo beam is linear distribution during the test process. Thus the plane cross-section assumption can be used for calculating the glued bamboo beam when designing. All the deflections for the ultimate load point are more than 60 mm and far bigger than the value 8.4mm (L/250) which is the maximum allowable deflection required by the Chinese wood structure design specification.
Cascade Reservoirs Optimal Scheduling Method Based on Chaotic Ant Colony Algorithm
Authors: Zhu Zhong Hao , Gao Hong Min
Published: April 2014

On the basis of the analysis of the basic information of the river basin reservoirs and application of chaotic ant colony algorithm, the medium-and long-term optimization operation model is established, which regards the maximum annual generation capacity of the cascade hydropower stations as the main purpose. The simulation result shows the algorithm improves the total annual power generation of the cascade reservoirs, and finally provides an effective solution to solve the cascade reservoirs optimization operation problem.
Numerical Simulation of Seepage Field of Tailing Water Channel in Construction Period of Coupling Fields of Stress and Seepage
Authors: Yan Guo Xin , Wu Wei , Zhao De Jun
Published: April 2014

On the basic of rock and soil mass mathematic model, with the boundary conditions of classic section, the seepage field in construction period is simulated. Some conclusions are drawn: the hydraulic gradient of the channel slope where the seepage spills out exceeds the allowable hydraulic gradient and some engineering measures are needed to avoid seepage damage; hydraulic gradient on rock base is less than the allowable hydraulic gradient and the seepage is safe.
Study on Jiping Canal Water Line of South-to-North Water Transfer Project
Authors: Su Xiao Cheng , Liu Zhi , Wang Xiao Yun
Published: April 2014

The South-to-North Water Transfer Project is a cross century water diversion project. So it is very important to ensure its normal operation. The hydraulic calculation of Jiping Canal of the South-to-North Water Transfer Project is carried out in this paper, working out cross section, the profile and the X-Y-Z perspective plot of Jiping Canal respectively. An analysis of the canal stability enables us to get the condition in which the canal is stable, which will provide strong technical support for the design and construction of the canal. Therefore, the analysis has important practical significance. The study will be effective guidance on the normal operation of Jiping Canal of South-to-North Water Transfer Project.
Construction of Evaluation Index System of Key Groundwater Levels of Typical Irrigation Area in Heilongjiang Province
Authors: Shang Yun Hu , Dai Chang Lei , Qi Peng , Xing Jun Sheng
Published: April 2014

In order to improve the management of groundwater by the groundwater level, this paper selects the ErLongtao irrigation area, Tailai County of Heilongjiang Province as an example, is based on the principles that without the occurrence of geological hazards, does not destroy the ecological environment and does not affect the normal production. Considering the example area actual situation, this paper constructs example of groundwater key groundwater level index, and delineates the groundwater key groundwater depth.
A Beam Element for Geometric Nonlinear Dynamical Analysis
Authors: Duan Jin , Li Yun Gui
Published: April 2014

In this paper, a three-dimensional beam element is developed for geometric nonlinear dynamical analysis. This element is based on the co-rotational formulation, in which the displacements of beam element are subdivided into rigid body movements and elastic deformations. The formulations are derived from the continuum mechanics based Updated Lagrangian incremental equations. The element can undergo large deflections and rotations, but small strains are assumed in the deduction. The validity of this element is confirmed by comparing with the numerical results in other literatures.
Numerical Analysis of Effect of Restraint on the Fire Resistance of Concrete Structures
Authors: Li Rong Tao
Published: April 2014

According to the researches of fire resistant experiments, based on the previous authors works, a numerical analysis of the effect of restraint on the fire resistance of concrete structures is done. The relevant effects include temperature field, saturation, vapor pressure, mechanical damage and thermal stress of structure etc. In particular, we focused on the thermo-hygro-mechanical detailed behaviors of concrete that can not be obtained from laboratory experiments, which will provide important reference for the fire resistance design of concrete structures.
The Study of Compactly Supported Orthogonal Two-Direction Vector-Valued Wavelet Packet
Authors: Li Lan
Published: April 2014

The concept of two-direction vector-valued wavelet packets is proposed. An approach for constructing orthogonal two-direction vector-valued wavelet packets is developed and their properties are discussed by means of time-frequency analysis method, algebra theory and functional analysis method. Orthogonality formulas concerning these two-direction vector-valued wavelet packets are established.