bluuebunny/crossref_metadata_2025 huggingface dataset:
Les restes de fruits dans les dépôts archéologiques du Midi de la France (Ve-XVIe siècles).
Authors: Bouby Laurent , Pradat Bénédicte , Ruas Marie-Pierre
Published: August 2013

Dans cette troisième série de sources, sont présentés les résultats relatifs aux vestiges archéologiques des fruits conservés dans les divers contextes des sites du Midi de la France médiévale et moderne. Cette revue s’étend du Ve siècle au XVIe siècle et se fonde sur un corpus de 49 sites répartis entre la Corse, la vallée du Rhône, le littoral et l’arrière-pays provençal et languedocien, les reliefs pyrénéens et l’Aquitaine. Différents paramètres permettent d’apprécier la représentativité de ce corpus et les biais taphonomiques qui limitent l’information. Les résultats offrent un spectre de 38 espèces fruitières, dont la majorité sont des arbres et des arbustes. Les occurrences de chaque espèce sont examinées selon différentes variables, et, notamment, celles des types de contextes, structures de combustion, lieu de stockage, sol d’occupation et dépotoirs, mais aussi des régions d’implantations des sites et de leurs périodes d’occupation. Les déchets de raisin, omniprésents, se repèrent sous diverses formes posant la question de leur nature vinicole ou non et des lieux de vinification. Les résultats mettent en évidence la rareté des fruitiers méditerranéens et les fréquences de certains fruits sauvages. Les questions de l’accès aux fruits rares, exotiques et du statut des fruitiers indigènes, sauvages ou cultivés, sont soulevées.
Les tours féodales du Quercy
Authors: Séraphin Gilles
Published: August 2013

Le phénomène des tours-beffrois a constitué un événement marquant dans le paysage du Quercy

médiéval. Près de 150 édifices assimilables à des tours-maîtresses, donc révélateurs de la présence d’un pouvoir féodal, ont été recensés dans le département du Lot. L’examen de ces édifices montre que les classifications typologiques habituelles sont ici prises en défaut. Dans leur édification, des considérations

purement formelles et des aléas conjoncturels semblent avoir souvent prédominé sur les motivations

fonctionnelles et la rationalité que toute tentative de classification est contrainte de projeter sur ces édifices.
Pratiques agraires et terroir de montagne : regard archéobotanique sur Montaillou (Ariège) au XIIIe siècle
Authors: Hallavant Charlotte , Ruas Marie-Pierre
Published: August 2013

The excavated part of the castle area of Montaillou (alt. 1354 m) (archaeologist in charge J. P. Cazes) provided a large quantity of carbonized seed remains that date back to the XIIth-XIIIth centuries. They allow an intimate knowledge of the terroir and the farming practises of the people who lived there one hundred years before those subjected to the interrogations recorded in the registry of the Inquisition. Carpological deposits formed the occupation levels of a privileged habitat (fillings of pits, hearths and floors), others a thick layer outdoors. The 19 cultivated or picked plants and the 86 wild plants are evidence of a polyculture varying according to altitude. Oat and barley dominate in waste. Wheat, rye, vetch, pea, lentil and, to a lesser extent, nuts and some other picked fruit, flax, hemp and spinach come next. Blocks of hay and straw mixed with fir foliage may represent fodder or bedding. Besides the complementary aspects of several medieval or more recent sources, the paper examines the possibility of reconstructing the territory, cereal crop processing and local farming techniques.
Cell Transplantation as a Pain Therapy Targets Both Analgesia and Neural Repair
Authors: Chen Lin , Huang Hongyun , Sharma Hari Shanker , Zuo Huancong , Sanberg Paul R.
Published: August 2013

Cell transplantation is a potentially powerful approach for the alleviation of chronic pain. The strategy of cell transplantation for the treatment of pain is focused on cell-based analgesia and neural repair. ( 1 ) Adrenal medullary chromaffin cells and the PC12 cell line have been used to treat cancer pain and neuropathic pain in both animal models and human cases. As biological or living minipumps, these cells produce and secrete pain-reducing neuroactive substances if administered directly into the spinal subarachnoid space. ( 2 ) Cell implantation for pain neurorestorative therapy is a new concept and an emerging research field for pain control along with neural repair. Possible neurorestorative mechanisms include neuroprotective, neurotrophic, neuroreparative, neuroregenerative, neuromodulation, or neuroconstructive interventions, as well as immunomodulation and enhancing the microcirculation. These factors may ultimately restore the damaged or irritated condition of the lesioned nerves. The growing preclinical and clinical data show that neural stem/progenitor cells, olfactory ensheathing cells, mesenchymal stromal cells, and CD34+cells have the capacity to manage intractable pain and improve neurological functions. Cell delivery routes include local, intrathecal, or intravascular implants. Although these strategies are still in their infancy phase for pain neurorestoratology, cell-based therapies could open up new avenues for the relief of pain. In this review, these aspects are critically analyzed based on our own investigations. This manuscript is published as part of the International Association of Neurorestoratology (IANR) supplement issue of Cell Transplantation.
The Detection and Analysis of Different Exterior Decorative Materials CS Panel Solar Radiation Performance Energy Saving Influence
Authors: Zhao Feng Hua , Dong Hai Rong , Zhou Y.Y.
Published: August 2013

The research of CS panel integration performance of energy saving, load bearing and decoration, shows that exterior materials reflection and absorption of solar radiation is one of the main factors that affects the thermal insulation and building energy efficiency. In this work the experimental detection data is analyzed both quantitatively and qualitatively in order to realize the influence of different solar radiation absorption properties from the outer decorative materials to the CS panel indoor thermal environment and energy-saving. The principle of energy saving optimization choice of the CS panel exterior decorative materials is proposed.
Effect of Asphalt Mix Properties on Surface Texture: An Experimental Study
Authors: Vaiana Rosolino , Praticò Filippo G. , Iuele Teresa , Gallelli Vincenzo , Minani Venant
Published: August 2013

Pavement surface characteristics play an important role in accident occurring, especially in wet conditions: the optimization of surface performance starting from hot mix asphalt (HMA) design phases is a fundamental requirement in road construction techniques. Although such relevance, the prediction of surface properties based on HMA composition and construction still calls for further research. Indeed, there is not a clear framework for a mix design oriented to surface properties. In the light of the abovementioned facts authors efforts were focused into the analysis of the most significant factors influencing pavement surface macrotexture, by analyzing the main variables of existing macrotexture prediction models. Many experimental mixes were designed and produced. Some statistical correlations between macrotexture data and mixes grading and volumetric properties were also carried out. Outcomes of this study are expected to benefit both practitioners and researchers.
Experiments and Analysis of the Structure of Concrete Roof Insulation
Authors: Lin Wen Shan , Wang Zong Kai
Published: August 2013

In this study, the building roof heat insulation structure was experiment and analysis. The simple approximation of a theory of thermal resistance network of the heat insulating structure was analyzed. The finite element method is proposed to evaluate the thermal characteristics of building components. The comparison between the finite element method and the thermal resistance network method was conducted by testing the thermal resistance of a concrete hollow block. Through the analysis of finite element method, the thermal resistance network and experimental validated, it is concluded the finite element analysis not only to calculated accuracy requirements but also has application in the form of the type of hole, material composition, intuitive analysis results. In the absence of test conditions or thermal performance test is not required, it is recommended to use finite element method to analyze problems.
Orthogonal Design Choices Recycled Concrete Load-Bearing Hollow Block
Authors: Xu Yuan , Wang Xiao Ping , Cheng Juan , Wang Dong
Published: August 2013

Study four factors - water consumption , water-cement ratio , recycled fine aggregate replacement ratio of recycled coarse aggregate replacement rate - affect the regularity of the load-bearing hollow block compressive strength of recycled concrete by orthogonal test method , the test showed that , water consumption factors affect the compressive strength of recycled concrete block design with than the emphasis on the control of water consumption . Under the test conditions , the optimum mixture ratio of recycled concrete load-bearing block : water consumption of 160 kg / m 3 , the water cement ratio 0.45 , recycled fine aggregate replacement ratio of 30% recycled coarse aggregate replacement ratio of 30% .
Green Construction Application in Project of Xi’an
Authors: Tan Chen , Yu Xiao , Yang Cheng Long
Published: August 2013

Implementation of green construction is a concrete manifestation of the concept of sustainable development in the construction phase. The key measures for green construction technology are energy saving, material saving, water saving and land saving during construction,as well as protecting environment and guaranteeing professional health. The comprehensive technologies for green construction in staff housing project of Xi'an Railway Bureau are introduced, as well as management measures, the measure of protecting the environment and resource conservation measures are described in detail. These measures may have some reference on promotion of green construction.
Studies on Bamboo Construction Eco-Building - Resolved the Cup Winners "Bamboo-Framed Lives"
Authors: Qiu Ju , Wang Qiao
Published: August 2013

Taking advantage of local abundant bamboo resources in the South of China, build green bamboo building. Full text does bamboo construction eco-resolution analysis from building materials, architectural surface, structured methods and modular assembly to create a "rain-home-bamboo" eco-living units, and ecological communities in virtuous circle.
The Green Residential Building Evaluation Structural System Based on Gray Clustering
Authors: Bao Xue Ying , Duan Xiao Rong , Wang Qi Cai
Published: August 2013

Currently, existing green building assessment system at home and abroad mainly in the planning, construction etc, less involves structural design. Based on the promotion and development of the macro-objectives of green building, from the perspectives of section with outdoor environment, energy-saving and energy utilization, water conservation and utilization of water resources, materials and material resource utilization and indoor environmental quality, the green residential building evaluation system based on gray chustering method has been built. According to the situation of the green residential building structure design, computing green residential building structure evaluation of the gray number albino function and Gray Variable clustering coefficient, summarized the clustering vector of the design of the building structure, finally to evaluate its green level, case study was adopted to verify the practicability and scientificity of the method.
Analysis of Electric Performance and Optimization of Trough Concentrating Solar Thermoelectric Cogeneration System
Authors: Chen Zhi Ping , Li Ming , Ji Xu , Luo Xi
Published: August 2013

This study introduced the basic situation of the parabolic trough concentrating solar cogeneration system, and set a one-dimensional steady-state mathematical heat transfer model based on the experimental devices, at the same time clarified influencing factors of the major heat transfer process and thermal performance of the system. The article did perspectives theoretical analysis and simulation for the system in different aspects, through using of solar trough concentrator reflecting device, established thermal performance experiments that water as the working fluid flow, provided theoretical and experimental basis for the thermal performance optimization of the system.
Assessment of Photovoltaic Technologies Integrated in Building Sectors in China
Authors: Fu Fei Ying , Fu Yu
Published: August 2013

In this paper, solar photovoltaic system utilized in building sectors in China is assessed. For photovoltaic, the main reason causes low utilized is high capital cost. Another problem for photovoltaic is that solar cell has low efficiency when utilized in practical. In this study, some works have done to assess PV utilized in building sectors in China from the technology and economic aspects.
Integrated Design and Evaluation of Solar Energy and Building Based on Virtual Simulation Technology
Authors: Wang Qian Kun , Zuo Wei Wei , Pan Shi
Published: August 2013

Based on analysis of the application status of the virtual reality technology and energy simulation technology in energy-efficient building, authors put organic combination with the virtual reality technology and energy simulation technology. Application methods of virtual simulation are discussed in integrated design of solar energy and building. And the evaluation process of solar energy and building integrated design is put forward. At the same time, according to the software of 3D Studio MAX and ECOTECT, the paper studies the case of solar energy and building integrated design virtual simulation.
Power Generation Forecasting of Solar Photovoltaic System Using Radial Basis Function Neural Network
Authors: Chang Wen Yeau
Published: August 2013

An accurate forecasting method for power generation of the solar photovoltaic (PV) system can help the power systems operator to reduce the risk of unreliability of electricity supply. This paper proposed a radial basis function (RBF) neural network method to forecast the power generation of PV system. To demonstrate the effectiveness of the proposed method, the method is tested on the practical information of power generation of a PV system. The good agreements between the realistic values and forecasting values are obtained; the numerical results show that the proposed forecasting method is accurate and reliable.
Research of Residential Area Ecological Green Roof for Reduce the Heat Efficiency in Taichung
Authors: Chen Chiou Chuan , Lee Soen Han
Published: August 2013

The study of empirical research in the field test, the roof by sunlight exposed control area of the roof panels, roof test area, scaffolding pilot area, vegetation area of the facade, radiation heat absorption temperature change monitoring, explore the roof surface heat transfer temperature difference change.In this study, set the empirical plane pilot area planting the groove (long 425cm × width 300cm × Height 20cm ) in the Taichung City Shenkang residential area on the second floor roof, planting the groove bottom up sequence laying frame high-rise, water proof layer, drainage layer,filter layer (non-woven, water-pottery -stone), the medium layer and planting of layer, planting the groove around the hollow brick interval income side to lighten the load; scaffolding pilot area elevated 60cm ,facade vegetation zone.12:00 temperature change, display the extensive green roof indeed can significantly reduce the building's roof floor surface temperature 8.5-14.2°C, 1-5 months of highest temperature can even cooling up to 17.2-26.2°C, thereby regulating the indoor temperature of carbon reduction effect; extensive green roof during the day at noon in winter and spring period can indeed achieve the cooling effectiveness. The temperature change the extensive green roof on 24:00 pm indeed can save the radiant heat energy to raise the roof of the building, the floor surface temperature of 0.4-2.1 °C, thus achieving the effect of insulation; 1-5 months of minimum temperature can even warming up to 1.9-4.1°C; the extensive green roof winter and spring night time can really achieve the insulation effectiveness.
The Technique of Computer Simulation Aided Architecture Design in the BIM Environment
Authors: Du Rong Wen , Gao Hui , Chen Cheng , Guo Juan Li , Feng Ke
Published: August 2013

This paper summaries the tools and methods in computer simulation aided architecture design, and then explores the building simulation integration design based on the BIM system. Its application is interpreted through the case study.Finally, the advantages of computer simulation aided architecture design based on BIM are presented.
Research on Energy Optimization and the Effect Factors of Energy Consumption about Residential Buildings in Inner Mongolia
Authors: Jin Guo Hui , Wang Huai Zhu
Published: August 2013

With the rapid development of national economy in china, the proportion of the building consumption in energy consumption is rising year by year. This paper will analyze energy influence factors of consumption of residential building in Inner Mongolia. According to these factors, it will optimize the energy consumption of residential building energy saving research . In the end , the thesis will put up some measures to optimization of conserve energy and provide guidance and help for residential building energy conservation in Inner Mongolia.
A Solar Power Computerized Platform for Energy-Saving Management of Green Building
Authors: Su Ying Ming , Wu Yi Shiuan
Published: August 2013

Among all kinds of renewable energy, solar energy is the most accessible and inexhaustible that can be applied unconditionally and has the least impact on the environment. We selected Beitou Library in the northern Taipei as the site to simulate the output energy of Photovoltaic panels (PV panels), since the building passed the Diamond Certification set by Taiwan Green Building Rating System (EEWH). The simulation was divided into two different angle settings: one set with a fixed angle for the whole year, and the other one with angles varied in certain time period. Results showed that in Taipei, when the set angle of solar panel was fixed, the output energy of Photovoltaic panels (PV panels) was the biggest when the set angle was 16 degree. In the situation of the variable angle setting, the shorter the cycle of angle variation, the lager the output energy of PV panels was.
Research about the Evaluation and Measurement Methods of Vibrations Caused by Railway and Urban Traffic System
Authors: Chang Liang , Liu Xia Bing
Published: August 2013

Due to frequent construction of rail traffic system of urbanization, the influence of vibrations caused by urban traffic system on surrounding environment has been increased. China is an ancient country with civilization, which had many unique historical relic resources. Meanwhile, the influence of vibrations by rail transportation system on historical relics had received increasing interest in recent years. This paper proposed a field test method, did a hammer testing in field that we gained vibrations level attenuation quotient with distance variation by the regression method, got velocity attenuation curve with distance variation under the industrial vibrations source which more easier than empirical formula in the standard.
Study on the Use of Geothermal Energy in Large Space Stadium
Authors: Wang Qian Kun , Zu Zhan Liang , Liu Si Lun
Published: August 2013

With the development of economy and the rising of public awareness on environmental issues, building energy consumption, especially the energy consumption of public buildings represented by large space stadiums, has received an increasing public attention. Geothermal energy, as a green energy, is widely used in large public buildings as a replacement of traditional energies. This article compares the respective economic and environmental benefits of ground source heat pump system and traditional air-conditioning system. First of all, the article discusses the feasibility of building geothermal wells and utilizing geothermal energy in large space stadiums. Then, the article illustrates the determination of the parameters of the geothermal wells and geothermal utilization strategy (deep + shallow geothermal) through software stimulation on Dest. Finally, the article evaluates the environmental and economic effect of geothermal energy system applied in large space stadium.
Vibration Analysis of Vehicle-Rail System under the Condition of Track Stiffness Irregularity
Authors: Lu Tian Yu , Yu Zu Jun , Shi Hong Mei
Published: August 2013

The interaction of track structure and high-speed train has greater impact on safe and steady running of the trains. This paper obtained acceleration and frequency spectrum of the train's running vibration in the case of sleeper’s spacing and continuous failure， and continuous and spacing loose tie by establishing the vertical model of vehicle-track coupling system, and analyzed the sleeper failure and loose tie which has a greater impact on the 40-80 Hz vibration frequency of the train, which provided a basis for track maintenance.
Architectural Characteristics of Enshi Wind-Rain Bridge
Authors: Hong Ying
Published: August 2013

The famous Wind-Rain Bridge of Enshi Tujia and Miao Autonomous Prefecture is one of the most peculiar civil buildings in national architectures of Enshi equally famous as the tilted house, the Wind-Rain Bridge is of extremely long history made of wood in peculiar mold with vivid minority nationality characteristics. The Wind-Rain Bridge of Enshi is analyzed and explored in the paper in several aspects including architectural environment, construction materials, construction technology, structure and decoration.
Thinking Framework and Practice of Solving Architectural Creation’s Value Problems Base on Rational Thinking Modes
Authors: Wang Ke Qi
Published: August 2013

Solving Problems is the ultimate task of architectural creation. From the point of problem types being Solved, it can boil down to three kinds which are condition problems, contradiction problems and value problems. Architectural creation thinking is systemic thinking which unifies the rational thinking and irrational thinking together. Rational thinking is the dominant thinking mode that solve many kinds of problems of architectural creation, and there are some keys to solve the architectural creation’s value problems base on rational thinking, Such as to develop the function, technology and form of intrinsical creation objects through exhuming the potential properties and expanding possibilities of creation interrelated elements . The basic goal of architectural creation that solving the value problems base on rational thinking is exalting the value of creation objects. It can improve the systematicness, efficiency and stabilization effectively to architectural creation.
Dynamic Properties of Double-Block Ballastless Track with Unequal Sleeper Spacings
Authors: Dai Feng , Yang Jun Bin , Liu Yong Xiao , Zhang Pu
Published: August 2013

Based on the vehicle-track coupling dynamics, by means of finite element method, the vehicle-double-block ballastless track-subgrade vertically coupled model is established to research the dynamic properties of double-block ballastless track with unequal sleeper spacings under the excitation of either long wave irregularity or short wave irregularity. The results indicate that the difference between the sleeper spacing and the standard sleeper spacing of the double-block track within the range of 70mm will not effectively affect the vehicle operation. The unequal sleeper spacing has a certain influence on the vertical displacement and acceleration of vehicle, rail and wheel rail force, but its influence on the force properties of track structure and vehicle operation stability can be ignored.
Research on Structural Stability of Prilling Tower in Fertilizer Industry
Authors: Zhang Hua , Li Qi Ming
Published: August 2013

Prilling tower is the core structure in the technological process of Nitro-compound fertilizer plant, whose safety is directly related to the normal operation of fertilizer production. Prilling tower is a hollow high special structure which is constructed by concrete-filled steel tubular (CFT) columns bonded by annularity truss and widely used in fertilizer plant. The stability study of the tower is still a blank at present as the structure's specific form. In this paper, buckling analysis is used to analyze the structure in order to define the CFT prilling tower's effective length, according to its characteristics. Its effective length is calculated with equivalent negative stiffness method and the stiffness demands of annularity truss are identified. Elastic-plastic stable assessment of structural stability is carried on using advanced analysis method. A new load model and evaluation method (lateral loading method) has been proposed based on advanced analytical results, which is suitable for evaluating elastic-plastic stability of high-rise steel structure. The stability design methods of such structures are also presented according to the analytical results, providing reference for similar structures and projects.
Whole-Process Analysis of the Mechanical Responses of High Formwork Support Systems during Concrete Pouring
Authors: Hu Chang Ming , Guo Yan , Wang Jie , Wu Qiong
Published: August 2013

An underground club in Xian is taken as the research object to explore the mechanical response of the internal poles of its high formwork support system during concrete pouring. The internal force static measurement of the high formwork support system is carried out. Each stage of the concrete pouring is simulated by the finite element analysis software ANSYS in the form of load step, whose results are contrasted with the measured results. The contrast reveals that the concrete pouring sequence has direct influence on the tendency of poles axial force and on the location of maximum axial force and that it is reasonable to adopt imaginary horizontal force which simulates the initial defects to carry out the overall stability analysis of the high formwork support system. It is pointed out that the program of setting up the formwork and the concrete pouring sequence should be determined with the finite element analysis.
A New Hybrid Control of mega-Sub Controlled Structure under Seismic Excitation
Authors: Cai Ting , Zhang Xun An , Qin Xiang Jun , Jiao Ping , Xue Rong Gang
Published: August 2013

Mega-sub controlled structure (MSCS) is a new structural configuration presented recently and has received widespread attention . To further improve the structural control effectiveness of MSCS, in this paper, a new hybrid control method is proposed which employ active control and adjust the stiffness of substructure together to form a huge hybrid controlled system based on the particular conformation characteristic of MSCS. The control law and dynamic equation to assembling parameter matrixes for the MSCS subjected to horizontal seismic excitation are presented. The result indicates that, compared with the corresponding status without actuators, the new structure employing hybrid control method proposed in this paper has the ability to develop a high level of response control effectiveness when subjected to seismic excitations and does significantly further reduce the responses of structure; a much better control effectiveness will be obtained after parameters optimization.
Excitation Action Triggered by Perilous Rock Avalanche to the Stability of Perilous Rock
Authors: Tang Hong Mei , Wang Lin Feng , Chen Hong Kai , Wang Zhi
Published: August 2013

The mechanism failure of massive perilous rock should consider the interaction among perilous rock masses. Study on the stability of adjacent perilous rock from the excitation wave, which is produced by the perilous rock mass at the collapse instantaneousness, has important significance. Focusing on the falling-type perilous rock, physical model of perilous rock with excitation wave is considered and the stress characteristics for the excitation wave of perilous rock avalanche on dominant fissure with normal incidence is analyzed. Based on the fracture mechanics, a method to calculate the combined stress intensity factors of dominant fissure under falling excitation action of perilous rock is established. As the instance results showed, two cites of nature and rainfall, the stability coefficient are both reduce, specially in the horizontal, stability coefficient reduced by about 10% respectively, while in vertical about 2%. The results provided some scientific progresses disasters prevention and mitigation of perilous rock.
Retrofitting and Reinforcement Design of Steel Platforms Made of Beam and Brace
Authors: Wu Wei , Ji Jing
Published: August 2013

Combined with the actual project that Rehabilitation and Strengthening of cleaning workshop at Longfeng refinery, three structural schemes of platforms are provided in this paper, and finally steel girder-diagonal brace scheme is selected through comparative analysis. Load, material and selection of section size for platform structural members are given. Deformation and internal force of structure are obtained by theory and PKPM analysis, the reasonableness that the member section is selected is verified. Connection design and specific structural measures are given, and finally the reinforcement design and checking for the carbon fiber of the original frame column is carried out, and these can provide reference for similar Retrofitting Project.
Rock Backfill and Hazard Control of Abandoned Stopes: A Case Study
Authors: Wang Yi Ming , Huang Mingqing , Wu Ai Xiang , Yao Gao Hui , Hu Kai Jian
Published: August 2013

Goafs formed in mine-out areas threat the underground mines owing to possibilities of rock burst and surface subsidence. This paper aims to discuss the feasibility, design and construction of waste rock backfill in abandoned stopes. Based on goafs distribution and stabilities in the White Bull Mine, rock backfill system with a total volume of 362,000 m3 in 8 gobs was designed and carried out. The system included technologically and economically feasible stopes, conveying equipments of tramcars, rock transfer by electric rakes, haulage network and mining workings. Field effects showed that rock backfill was applicable to control potential hazards. With rock filling, goaf utilization rates ranged from 60% to 70%, which helped to control adjacent rock movement, eliminate rock burst and surface subsidence. Additionally, backfill construction reduced the lift and transportation costs of rocks by about 50%, which further lowered the land usage of surface dumping.
Seismic Isolation Technology in Remodifying the Existing Brick-Concrete Buildings
Authors: Wang Mai Dui , Liu Hao Chun , Liu Yi , Wang Jian Qi
Published: August 2013

Due to the limited scientific level in forecasting seism, it is still not available to provide an accurate imminent prediction. As seism brings large amount of building destruction and casualties, taking effective anti-seismic measures to fortify and remodify buildings becomes the worldwide critical work in seism proofing and hazard reduction.
Seismic Performance Experimental Research of Added Ring-Beams and Tie-Columns Masonry Structure
Authors: Qu Tie Jun , Chen Jing Yi , Wang Xian Yun
Published: August 2013

To research seismic performance of the strengthened masonry structure, the two stories masonry structure housing model with added ring-beams and tie-columns was designed and made in this paper. By inputting acceleration time-history curve of rarely earthquake of Intensity 7, the seismic response of acceleration, speed, restoring force and displacement of the strengthened masonry structure were obtained through the pseudo-dynamic test when rarely earthquake of Intensity 7 occurred. The reinforcement strain time-history curves of tie-columns root and beam-column junction were tested, then the restoring force-displacement curve of the structure was obtained. By method of pseudo-static test, the strengthened masonry structure of the ultimate limit bearing capacity, limit deformation were obtained, the cracking part and developing process were observed. Finally, comparing the data in this test with that test result of the ring-beams and tie-columns masonry structure designed based on current codes; analyzed seismic performance of the strengthened masonry structure when rarely earthquake of Intensity 7 occurred.
Study on Design Measure of Seismic Capacity Design in R.C. Mega-Frame Structures
Authors: Duan Hong Xia , Zhang Shang
Published: August 2013

This paper explores the design method of several typical mega plane frames, with the variables being the combination of varying amplification coefficient of moment at bottom sections of ground floor columns of the secondary frame on the main beams. The elastic-plastic dynamic analysis program Drain-2d+ of the plane structure is used to carry out the elastic-plastic time-history analysis for each typical mega-frame under the earthquake action. Based on the analysis, the deformation characteristics of the mega-frame, the emerging of the plastic hinge and the weak point of the overall structure under the earthquake action is developed, from which the correct method of obtaining the design value of amplification coefficient of moments at bottom sections of ground floor columns of the secondary frame on the main beams is concluded. The reasonable design values are recommended as the basis to provide some suggestions for the design of the reinforced concrete mega-frame structure.
Application of BIM in Construction and Analysis of Obstacles
Authors: Tang Hong , Long Teng
Published: August 2013

This paper mainly focus the on application of BIM in construction and obstacles existing in development of BIM. According to the construction difficulties of some project, the authors established the 3D model of the project, derived the 2D construction drawings and calculated the quantities of the materials by softwares based on BIM technology. Finally, the engineering cost had been controlled effectively and construction period had been cut down substantially. In the paper, a construction management system of BIM is put forward and the main obstacles in the development of BIM are obtained through analyzing based on the practices in the project.
Experiment and Numerical Simulation of Rotating Speed of Blade in Sandstone Wastewater of Rotational Flow Grit Chamber
Authors: Ao Xue Fei , Wang Xiao Ling , Zhou Zheng Yin , Lang Jian
Published: August 2013

The high-turbidity solid-liquid two-phase problem of the complex flow pattern is of greatest importance for the grit chamber with rotational flow. An Eulerian-Eulerian two-phase model for describing the collision force between particles in sandstone wastewater properly was developed. A bench scale experiment combining with a hydroelectric project was conducted. By analyzing the removal efficiency at different speeds of blade, the optimized rotating speed was obtained. Based on the optimized rotating speed, three-dimensional numerical simulation of the two-phase flow field was studied. The simulation results showed that when the number of blade is four, the optimum removal efficiency can be reached, which was found to be in reasonable agreement with the experimental data.
Research on the Relational Governance of Construction Project Transaction
Authors: Cheng Zu Song
Published: August 2013

Project contract is only one aspect of project governance. Even a perfect contract can not ensure the project performance. The specific characteristics of construction project transaction determines the traditional project governance mechanism that focus on contract alone can not make sure that the construction project goes well. In fact, since construction projects are inserted to certain social environment, the influence of social relationship on project performance draws increasing attention as the research on project governance goes further. The paper applies the idea of relational governance to construction project transaction governance aimed at its specific characteristics and analyses the influential factors of relational governance in construction project transaction from the stakeholders angle and its application exemplified by the partnering pattern.
Study on the Montgomery County Farmland Preservation Program and its Enlightenment for China
Authors: Tang Li Ming , Liu Meng Ting
Published: August 2013

Montgomery County has been home to a strong agricultural industry, and the Farmland Preservation Program has contributed a lot. The two parts of the Program-the Transfer of Development Rights Program and the Purchase of Development Rights Program have preserved a great amount of farmland for the county and keep the development and prosperity of the agriculture. Nowadays, the recession of agriculture and the decrease of farmland are serious in China, so it is urgent to find solutions to those problems. The experiences from the Montgomery County has a certain sense of enlightenment for China to deal with the situation, such as 1) convert the development views and response to urban sprawl, 2) using economic means to solve the problems of farmland preservation, 3) establishing the development rights to guarantee the benefits and interests of farmers, 4) developing more scientific and reasonable land evaluation methods for the compensation.
Research on System of Evaluating Efficiency of Safety Resources in Enterprises of Civil Engineering Based on Accounting Data
Authors: Li En Zhu , Xu Hong Shan , Liao Jia Ming
Published: August 2013

The necessity of establishing the system of evaluating efficiency, based on data of accounting, for safety resources invested in enterprises of civil engineering is proposed systematically. The implications and the features of the recommended evaluation system of the safety resources are also demonstrated. This system of evaluating efficiency can be used in all units of civil engineering with possible accidents in production and for estimating and reflecting the inefficiency of the resources provided in preventing accidents in production. On the basis of the functions of this evaluation system, the main framework of Data Envelopment Analysis (DEA) for the system of evaluating efficiency is also suggested, which is accordant to features of data of accounting in enterprises of civil engineering. The purpose of studying this system is to promote effective evaluation and management of safety resources invested in enterprises of civil engineering.
Highway Landscape Aesthetic Experience: Perception Principle and Psychological Process
Authors: Qin Xiao Chun , Shen Yi , Shao She Gang , Wang Dan
Published: August 2013

As the essential public assets for sustainable development, Highway should provide for people not only the enjoyment of convenient and safe transportation, but also the fulfillment of visual pleasure and aesthetic appeal. Taking the highway as the aesthetic object and making the research in aesthetic perception and the process of psychological experience of the aesthetic subject are of great importance to highway landscape planning and design. The aesthetic subject and object of highway landscape are defined and their relationship between the two is explored based on the analysis of characteristics and principles of highway aesthetics in the paper. And the conception of the highway landscape aesthetic field is also introduced. In view of the aesthetic characteristics of highway landscape, the aesthetic process is studied in detail from three phrases of aesthetic expectation and aesthetic attention, aesthetic expansion and aesthetic perception, and aesthetic dispersion. Taking Guangdong Fokai highway for example, the aesthetic psychological expanding process of highway landscape is finally analyzed.
Technologies for Reusing Resources in Abandoned Oilfield after Tertiary Oil Recovery
Authors: Shao Xian Jie , Kang Yuan Yuan , Wang Cai Feng , Gao Er Shuang , Che Xin Hui , Huang Zhi Shuang , Dong Xin Xiu
Published: August 2013

In traditional views, oilfield is abandoned after water flooding and chemical flooding. But the recovery is only 50%~60%，that is to say, more than 40% of the resource is still left underground. Therefore, how to utilize this part of resource economically and effectively is a key problem to be tackled. Based on the lab experiments and theoretical researches on viscosity-temperature relationship, displacement and relative permeability under high temperature, the mechanism of enhancing oil recovery through steam flooding in super-high water cut stage of water injection oilfield was analyzed. The experimental results showed that steam flooding in 200°C after polymer flooding could increase oil displacement efficiency by 14.5%. Water flooding and polymer flooding had been implemented in Sabei development area of Daqing Oilfield since it was brought into development in 1963. The recovery had reached above 70% and the water cut had exceeded 98%. There was no economic benefit to develop continually, the oilfield faced abandonment. Steam flooding test was carried out to enhance oil recovery on this basis. According to the geological characteristics and development status, special technical measures were taken based on the lab experiments and numerical simulation including high-pressure steam injection to improve heat utilization, forced fluid withdrawal to increase production rate, insulated tubing and nitrogen insulation to keep the bottom hole steam dry, and tracking analysis to adjust injection-production parameters duly. The ultimate recovery reached 81.6％ which increased 10.7% on the original basis, the field test was successful technically. Steam flooding is characterized with quick effect, high production rate and high producing degree of residual oil. This successful technology provides a direction for secondary development after polymer flooding in water flooding oilfield.
Risk Analysis on Downstream of a Reservoir when the Flood Control Forecast Operation Method is Used - An Example of Shenwo Reservoir
Authors: Dong Si Hui , Zhao Yu Ku , Lin Yu Han
Published: August 2013

The present article aims to introduce the authors research on the method of flood control forecast operation that a reservoir can actualize in a flood season. Though it is an effectual measure to resolve the discrepancy between the flood control and the water resource utilization, the risk for a reservoir to actualize the flood control forecast operation method decides whether it can be actualized as compared to the conventional operation method. So far, there is not an effective quantitative method to calculate the above risk. Having analyzed the risk factors of the flood control operation, a kind of numerical analysis method has been put forward to calculate such risks based on the distribution of the flood runoff of a reservoir and the forecast errors of the runoff. Thus, the risk to the downstream of a reservoir caused by the forecast errors can be calculated quantitatively and the present article has done such practical flood control forecasts. Taking Shenwo reservoir for example, the authors have introduced the ideas and calculation methods in a detailed way. The calculation results of Shenwo reservoir show that the risk is tolerable or acceptable with Shenwo reservoir in contrast to the conventional operation method.
Correlation Analysis on Water Resources Utilization and the Sustainable Development of Social Economy in Minqin of Gansu Province
Authors: Han Jian Min , Zhang Ren Zhi
Published: August 2013

This paper analyze the relativity of water resources utilization in Minqin and social economic sustainable development adopting optimal multiple regressions. The results show that: 1There is remarkable correlation between the economic growth and the demand of water resources. On condition that the sustainable development of economy is satisfied, the growth of rural population is a huge pressure on water resources. It is an appropriate measure to coordinate the environmental protection and social economic development that reducing the consumption of water for rural population or accelerating the process of urbanization and developing forestry and animal husbandry. 2) Increasing urban population and developing industry and modern farming can promote our economic growth at the same time reduce the pressure on water resources significantly. 3) 97.5% of the variation in the total water requirement of Minqin is caused by two variables animal husbandry output value and rural population. So the major routes of rational utilization of water resources and the sustainable development of social economy in Minqin are reducing the consumption of water for rural population constantly or accelerating the process of urbanization and optimizing animal husbandry industry further.
Study on Structure Optimization of the Allocation of Water Resources of Minqin Based on Goal Programming
Authors: Han Jian Min , Zhang Ren Zhi
Published: August 2013

Using the theory of goal programming, this paper studies the optimal allocation schemes for water resource in 2015 of Minqin, by establishing a model of optimized allocation of water resources which aims at the maximization of ecological, economic and social benefits. The results show that:1) In the scheme of the utilization of water resource in Minqin based on the modified goal programming model (Ecological scheme A2), the total water consumption reduces by 35.25%, of which: the consumption for planting reduces by 43.3%, but the consumption for industry increases by 61.78%, and the consumption for the third industry increases by 124.68%. Meanwhile the total planning output value increases by 88.35%, of which: the planting output value reduces by 5.42%, but the industrial output value increases by 159.16%, the third industrial output value increases by 57.06%. Therefore it realizes the minimization of the water resource consumption and achieves the goal of maximizing ecological benefit, economic benefit and social benefit at the same time.2) Reducing the water consumption of planting is the basic approach to achieve the goal of ecosystem comprehensive harness in Minqin basin. Actively promoting and developing the modern animal husbandry, industry and the third industry is the sustainable development direction to achieve maximum economic benefits and social benefits on the premise of ecological protection.
Monitoring of Electrical Parameters into Island Grid Integrating Renewable Energy Sources
Authors: Oprea Adrian , Dragomir Florin , Dragomir Otilia Elena , Olariu Nicolae , Olteanu Liviu
Published: August 2013

Renewable energy source (RES) enables us to diversify our energy supply. This increases our security of supply and improves European competitiveness creating new industries, jobs, economic growth and export opportunities, whilst also reducing our greenhouse gas emissions. The monitoring systems are widely used in RES applications in order to collect data regarding the installed system performance, for evaluation purposes. In this article, the development of a computer-based system for RES systems monitoring is described. This article proposes a tool dedicated to real-time information of electricity and thus implicitly the optimal timing for use of electricity. The proposed system consists for measuring electrical parameters (photovoltaics voltage and current etc.).
Water Quality Evaluation of a Pumped-Storage Reservoir in Ningxia, China
Authors: Zheng Lan Xiang , Li Chun Guang
Published: August 2013

Shuidonggou Reservoir is a pumped-storage reservoir pumping water directly from Yellow River in Ningxia, China. Combined membership function with weights, fuzzy comprehensive method with five indicators was used to evaluate the reservoir water quality in four months of 2011. The results showed that the water quality belonged to level IV in May, July and August, and to level V in September of 2011. TN and TP were the two most important indicators which have strong impact on Shuidonggou Reservoir water quality. We propose that some solutions should be carried out to protect the reservoir water quality.