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Search Results: 1 - 10 of 6338 matches for " Jiansuo Pei "
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Interrelations among scientific fields and their relative influence revealed by input-output analysis
Zhesi Shen,Liying Yang,Jiansuo Pei,Menghui Li,Chensheng Wu,Jianzhang Bao,Tian Wei,Zengru Di,Ronald Rousseau,Jinshan Wu
Physics , 2015,
Abstract: In this paper, we try to answer two questions about any given scientific discipline: First, how important is each subfield and second, how does a specific subfield influence other subfields? We modify the well-known open-system Leontief Input-Output Analysis in economics into a closed-system analysis focusing on eigenvalues and eigenvectors and the effects of removing one subfield. We apply this method to the subfields of physics. This analysis has yielded some promising results for identifying important subfields (for example the field of statistical physics has large influence while it is not among the largest subfields) and describing their influences on each other (for example the subfield of mechanical control of atoms is not among the largest subfields cited by quantum mechanics, but our analysis suggests that these fields are strongly connected). This method is potentially applicable to more general systems that have input-output relations among their elements.
Predictive toxicology of chemicals and database mining
Jiansuo Wang,Luhua Lai,Youqi Tang
Chinese Science Bulletin , 2000, DOI: 10.1007/BF02887181
Abstract: The toxic chemicals from the database Registry of Toxic Effects of Chemical Substances (RTECS) were analyzed by structural similarity comparison, which shows that the structure patterns or characteristics of toxic chemicals exist in a sufficiently large database. Then, a two-step strategy was proposed to explore noncongeneric toxic chemicals in the database: the screening of structure patterns by similarity comparison and the derivation of detailed relationship between structure and activity by using comparative molecular field analysis (CoMFA) of Quantitative Structure-Activity Relationship (QSAR) technologies. From the performance of the procedure, such a stepwise scheme is demonstrated to be feasible and effective to mine a database of toxic chemicals. It can be anticipated that database mining of toxic chemicals will be a new area for predictive toxicology of chemicals.
Predictive toxicology of chemicals and database mining

WANG Jiansuo,LAI Luhua,TANG Youqi,

科学通报(英文版) , 2000,
Abstract: The toxic chemicals from the database Registry of Toxic Effects of Chemical Substances (RTECS) were analyzed by structural similarity comparison, which shows that the structure patterns or characteristics of toxic chemicals exist in a sufficiently large database. Then, a two-step strategy was proposed to explore noncongeneric toxic chemicals in the database: the screening of structure patterns by similarity comparison and the derivation of detailed relationship between structure and activity by using comparative molecular field analysis (CoMFA) of Quantitative Structure-Activity Relationship (QSAR) technologies. From the performance of the procedure, such a stepwise scheme is demonstrated to be feasible and effective to mine a database of toxic chemicals. It can be anticipated that database mining of toxic chemicals will be a new area for predictive toxicology of chemicals.
Why “Ding-Dong Community” Cannot Succeed Like American Version “Nextdoor”?  [PDF]
Pei Deng
Journal of Service Science and Management (JSSM) , 2015, DOI: 10.4236/jssm.2015.84065
Abstract: The conception of community O2O is very popular currently in China, which has become the focus of attention in the field of e-commerce. However, since at the preliminary exploration stage everything in this area changes very quickly, there is not yet mature business model to mimic. Many of the problems should be studied and clarified. Taking the rise and failure of “ding-dong district” as a case, this article attempts to analyze the unsuccessful reason that “ding-dong district” imitates the US version “Nextdoor” in the context of China, and put forward the corresponding countermeasures and suggestions, aiming to provide related reference for Chinese enterprises in the exploration and development of community e-commerce.
Fiber Bragg Grating Strain Sensing Detecting Multi-Crack Damages under Vibrating Status  [PDF]
Pei Luo
Optics and Photonics Journal (OPJ) , 2017, DOI: 10.4236/opj.2017.78B002
Abstract:
The multi-crack damages modal of simple supported beam has been build, at the vibrating status, the multi-damage detecting method of simple supported beam measured by fiber Bragg grating strain sensing array has been studied. From 0 hz to 200 hz, using exciter vibrating simple supported beam, with different damages, resonant frequency of simple supported beam has changed. So, when the damage appears in simple supported beam, the local rigidity will decrease, the resonant frequency of simple supported beam will be affected, the damage status of simple supported beam have been determined by this. The experimental result indicates that the resonant frequency of simple supported beam has changed when there is no damage, one damage, two damages, three damages on simple supported beam. According to this, the fiber Bragg grating strain sensing array can detect multi-crack damage of simple supported beam under vibrating status.
Japanese Ways of Developing Urban Underground Recreation Space  [PDF]
Pei Zhang
World Journal of Engineering and Technology (WJET) , 2018, DOI: 10.4236/wjet.2018.62030
Abstract: This paper defines the concept of urban recreation space at first, and thenfocuses on the six aspects of experience in?functional orientation, joint development, business planning, environment designing,recreational route designing, operation and management based on reviewing the development process of the underground street in urban recreation space in Japan.The results show that the overall planning and detailed design of urban recreational space in Japan is worth learning and drawing lessons for all countries in the world.
Structure Damage Identification via Fiber Grating Strain Sensing Array Detecting and Wavelet Analysis  [PDF]
Pei Luo
Optics and Photonics Journal (OPJ) , 2018, DOI: 10.4236/opj.2018.89025
Abstract: The measuring method of structure damage during vibrating has been developed by applying simple supported beam as object of study, fiber Bragg grating strain sensing array as the measuring method, and wavelet package analysis as signal extracting tools. The damage data of simple supported beam at vibrating state has been collected. The damage characteristic indexes have been extracted based on analyzing and handling the damage data with wavelet analysis. The experiment shows that fiber Bragg grating strain sensing array can sensitively measure the experimental data of simple supported beam at vibrating state. The fiber Bragg grating strain sensing array measuring is a new method in dynamic measurement.
The Influence of Residents’ Opinions on the Redesign of Urban Underground Streets: A Case Study from Diyi Underground Street  [PDF]
Pei Zhang
Journal of Building Construction and Planning Research (JBCPR) , 2018, DOI: 10.4236/jbcpr.2018.64015
Abstract: The rapid development of urbanization and rapid growth of urban population have brought about various urban problems, and the development of cities to the ground and underground has become an inevitable choice. Underground street is a kind of underground space types, and it is also an important urban recreational resources and tourism resources. The evaluation of underground street users, especially the residents and tourists, has important reference value for the recreational resources’ redevelopment of underground street. Firstly, this paper reviews the relevant research literature on underground street and Post-Occupancy Evaluation theory, then chooses Diyi Underground Street, Chengdu, China, as the research object, and conducts a questionnaire survey and in-depth interviews on residents’ shopping intention from five dimensions of underground street environment, decoration, commercial form, public facilities and other aspects. Finally, the survey data are analyzed quantitatively. The results show that some influence factors such as air quality, daylighting, decoration style etc. greatly affect the willingness of residents to enter the street. Therefore, residents’ recreational experience should be emphasized during the underground street re-planning according to the above factors.
A Framework of Output Specifications and Evaluation Method for Hospital PPP Projects  [PDF]
Yun Pei
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.71012
Abstract:
Introduction: Public-private partnership (PPP) has been adopted widely in infrastructure construction projects, and its application in medical and health service industry is increasing day by day. However, the performance of a PPP project could be affected by a number of factors and their interactions, due to its complexity in multiple stakeholders and stages. Previous researches on hospital PPP projects mainly focus on the factors which lead to success/failure, or the results of implementing PPP on hospital projects, or risk management, rather than its evaluation mechanism. So, to comprehensively promote and guarantee the effective implementation of the hospital PPP project, a scientif-ic quantitative evaluation method according to certain evaluation procedures and the performance evaluation system for hospital PPP projects are pro-posed from the perspective of the government.
Development Value and Future Trend of Urban Underground Street  [PDF]
Pei Zhang
Current Urban Studies (CUS) , 2019, DOI: 10.4236/cus.2019.71002
Abstract: Underground street refers to a street built under a busy business district or a crowding center in a city, providing underground sidewalks for urban residents, opening shops and arranging various service facilities on both sides. Starting with the definition of urban underground street, this paper analyses the origin, classification, composition, development value and future trend of underground street, and holds that reasonable proportion should be maintained in the area of each component of underground street. The main development value of underground street lies in saving land and alleviating traffic pressure. 3D, urban complex, humanistic design and tourist attractions are future development trends of urban underground Street.
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