With different weight ratio of carbonyl iron powder and La1-xSrxMnO3 (x=1.3, 0.4, 0.5) powder have been prepared by physical method. The structure, morphology and microwave absorption properties have been investigated. The results show that the ratio of carbonyl iron powder to La1-xSrxMnO3 has great influence on reflection loss. The optimal absorption property can be obtained when the weight ratio of the carbonyl iron powder to La0.06Sr0.4MnO3 is 30:1, which is attributed to the balance of the electric-magnetic match.
{"title":"Preparation and Microwave Absorption Properties of Carbonyl Iron/ La1-xSrxMnO3 (x=0.3, 0.4 and 0.5) Composites","authors":"Cheng Yulan, Wei Kexiang, Xia Ping, B. Quan","doi":"10.1109/ICDMA.2013.221","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.221","url":null,"abstract":"With different weight ratio of carbonyl iron powder and La<sub>1-x</sub>Sr<sub>x</sub>MnO<sub>3</sub> (x=1.3, 0.4, 0.5) powder have been prepared by physical method. The structure, morphology and microwave absorption properties have been investigated. The results show that the ratio of carbonyl iron powder to La<sub>1-x</sub>Sr<sub>x</sub>MnO<sub>3</sub> has great influence on reflection loss. The optimal absorption property can be obtained when the weight ratio of the carbonyl iron powder to La<sub>0.06</sub>Sr<sub>0.4</sub>MnO<sub>3</sub> is 30:1, which is attributed to the balance of the electric-magnetic match.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126299413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The pile foundation is a widely used form of the basis, and its mechanical behavior under static action has been basically clear, but has yet to be a more detailed study of response pattern under dynamic action. A group pile foundation for the study, with the dynamic finite element analysis method to explore the seismic response law of pile groups. The study considered the nonlinear soil, pile - soil interaction, pile side resistance and end resistance action. Calculated dynamic response results of the cap - Piles - foundation system, and it's research findings have reference value to the dynamic design of the pile foundation.
{"title":"Seismic Responses Study of Pile-Groups Foundation","authors":"Hongshun Ding","doi":"10.1109/ICDMA.2013.281","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.281","url":null,"abstract":"The pile foundation is a widely used form of the basis, and its mechanical behavior under static action has been basically clear, but has yet to be a more detailed study of response pattern under dynamic action. A group pile foundation for the study, with the dynamic finite element analysis method to explore the seismic response law of pile groups. The study considered the nonlinear soil, pile - soil interaction, pile side resistance and end resistance action. Calculated dynamic response results of the cap - Piles - foundation system, and it's research findings have reference value to the dynamic design of the pile foundation.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125438623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wang Renguang, Zhang Lintao, Yu Chao, Shi Chuanlong
A power train with two speed gears was developed for driving pure electric vehicles. This new pure electric power train mainly includes one electric motor, a planetary gear set, a fork and sleeve mechanism and the main differential, which are formed in one integration mechanism. The fork and sleeve mechanism was added to this integration power train system for providing three different operation positions according practical conditions, its three operation positions are corresponding to three operation modes, which are high speed position, low speed position and neutral position. With this new mechanism, the power train system can reduce electric volume and increase driving torque, which can benefit vehicle layout with high energy efficiency.
{"title":"A New Powertrain of Two Speeds for Pure Electric Vehicle","authors":"Wang Renguang, Zhang Lintao, Yu Chao, Shi Chuanlong","doi":"10.1109/ICDMA.2013.13","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.13","url":null,"abstract":"A power train with two speed gears was developed for driving pure electric vehicles. This new pure electric power train mainly includes one electric motor, a planetary gear set, a fork and sleeve mechanism and the main differential, which are formed in one integration mechanism. The fork and sleeve mechanism was added to this integration power train system for providing three different operation positions according practical conditions, its three operation positions are corresponding to three operation modes, which are high speed position, low speed position and neutral position. With this new mechanism, the power train system can reduce electric volume and increase driving torque, which can benefit vehicle layout with high energy efficiency.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121936504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The design of a subway station that crosses an urban trunk road for automobiles in Chengdu city is summarized in this paper. In view of its special location and structural design, the subway station is built in combination with open cut and tunneling method, its structure consists of three different parts, which includes two reinforced concrete frame structures and a bored tunnel with side platforms. The frame structure is built with open cut method, but the bored tunnel with platform is built by means of tunneling method. The structure and construction process are both summarized in the paper. The scenario may provide guidance for the design and construction of such peculiar subway station under similar circumstances.
{"title":"Design of a Subway Station Crossing Urban Trunk Road by Open Cut and Tunneling Method","authors":"Z. Xiaojun, Hu Hongyun, Wang Xiaofeng","doi":"10.1109/ICDMA.2013.107","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.107","url":null,"abstract":"The design of a subway station that crosses an urban trunk road for automobiles in Chengdu city is summarized in this paper. In view of its special location and structural design, the subway station is built in combination with open cut and tunneling method, its structure consists of three different parts, which includes two reinforced concrete frame structures and a bored tunnel with side platforms. The frame structure is built with open cut method, but the bored tunnel with platform is built by means of tunneling method. The structure and construction process are both summarized in the paper. The scenario may provide guidance for the design and construction of such peculiar subway station under similar circumstances.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chenxing Wu, Haihui Zhang, Jiaming Zhang, W. Tian, Hao Cheng
At present orchard production management in our country mainly focuses on the process of circulation traceability and supervision, while little attention is paid to the production process, and all kinds of information collection work is mainly completed by hand, which obviously is not standard, of poor record, time-consuming and has great blindness and randomness. An intelligent system is put forward in this paper to solve the supervision problems in apple production process of Shanxi province. The system took one tree as monitoring unit based on RFID technology, embedded technology, the. net Framework technology, database technology and wireless transmission technology. Electronic archives for each apple tree were set up and the whole record orchard production was realized to standardize the management of production process. With this system, the information transparency of the apple production process can be enhanced and the orchard production management level be improved to enhance the quality and yield and guarantee the safety of fruits.
{"title":"An Orchard Management Systemwith RFID-Based Apple Tree Identify Detection","authors":"Chenxing Wu, Haihui Zhang, Jiaming Zhang, W. Tian, Hao Cheng","doi":"10.1109/ICDMA.2013.42","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.42","url":null,"abstract":"At present orchard production management in our country mainly focuses on the process of circulation traceability and supervision, while little attention is paid to the production process, and all kinds of information collection work is mainly completed by hand, which obviously is not standard, of poor record, time-consuming and has great blindness and randomness. An intelligent system is put forward in this paper to solve the supervision problems in apple production process of Shanxi province. The system took one tree as monitoring unit based on RFID technology, embedded technology, the. net Framework technology, database technology and wireless transmission technology. Electronic archives for each apple tree were set up and the whole record orchard production was realized to standardize the management of production process. With this system, the information transparency of the apple production process can be enhanced and the orchard production management level be improved to enhance the quality and yield and guarantee the safety of fruits.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133862454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
3D modeling of pipe-die for pre-stressed concrete centrifugal square pile is conducted basically using CATIA software in this paper. The developed digital model is imported to ANSYS software for vibration modal analysis, thus gaining natural vibration frequency of each order of pipe-die and the corresponding vibration mode. Finally, valuable suggestions on the structure design of centrifuge have been proposed.
{"title":"Vibration Modal Analysis of Centrifuge Pipe-Die for Pre-Stressed Concrete Square Pile","authors":"Zeng Xian-ren, Zuo Yan-yan, Wei Mingtao","doi":"10.1109/ICDMA.2013.393","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.393","url":null,"abstract":"3D modeling of pipe-die for pre-stressed concrete centrifugal square pile is conducted basically using CATIA software in this paper. The developed digital model is imported to ANSYS software for vibration modal analysis, thus gaining natural vibration frequency of each order of pipe-die and the corresponding vibration mode. Finally, valuable suggestions on the structure design of centrifuge have been proposed.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134554482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper tries to present an trajectory planning algorithm applied in an intelligent driver model to control an unmanned ground vehicle in complex environment. The proposed trajectory planning algorithm takes into account of the surrounding environment, including lanes and road geometries, surrounding obstacles, including static obstacles and moving obstacles, and traffic infrastructure, and a decision making process determines an optimum trajectory to follow safely and comfortably based on the analysis of the travelable region and traffic rules. The concept presented in this paper is demonstrated through simulation and the results are discussed.
{"title":"A Trajectory Planning Algorithm for Highly Automated Driving in Complex Environment","authors":"Sumin Zhang, Yu Wang, Q. Huang, Shanshan Wang","doi":"10.1109/ICDMA.2013.22","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.22","url":null,"abstract":"This paper tries to present an trajectory planning algorithm applied in an intelligent driver model to control an unmanned ground vehicle in complex environment. The proposed trajectory planning algorithm takes into account of the surrounding environment, including lanes and road geometries, surrounding obstacles, including static obstacles and moving obstacles, and traffic infrastructure, and a decision making process determines an optimum trajectory to follow safely and comfortably based on the analysis of the travelable region and traffic rules. The concept presented in this paper is demonstrated through simulation and the results are discussed.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134289261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Choose three different administrative property in Guangzhou campus, to make the use present situation questionnaire survey of information intelligent system, and find out the existing problems in information intelligent systems, the collected data by using frequency analysis, mean analysis and single factor variance analysis method of statistical analysis, to obtain the user satisfaction evaluation index, and to explore the future development trend of the campus information intelligent system.
{"title":"Post-Occupancy Evaluation of Information Intelligent System in Guangzhou Three University Campus","authors":"H. Yi","doi":"10.1109/ICDMA.2013.219","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.219","url":null,"abstract":"Choose three different administrative property in Guangzhou campus, to make the use present situation questionnaire survey of information intelligent system, and find out the existing problems in information intelligent systems, the collected data by using frequency analysis, mean analysis and single factor variance analysis method of statistical analysis, to obtain the user satisfaction evaluation index, and to explore the future development trend of the campus information intelligent system.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131818707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The structure system of the steel roof of Tianjin Grand Theater is complex, and the stress distribution changes constantly in the unloading process. Through the simulation analysis of the whole unloading process, the stress distribution and deformation of the structure in different unloading steps were obtained. Besides, member configuration was predicated and preset in order to satisfy the target configuration when the project is completed. The simulation analysis verifies the feasibility of the unloading plan and provides a reference for the design and construction of long-span space steel structures in the future.
{"title":"Simulation Analysis of the Steel Roof of the Tianjin Grand Theater in the Unloading Process","authors":"N. Ben, Chen Zhihua","doi":"10.1109/ICDMA.2013.285","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.285","url":null,"abstract":"The structure system of the steel roof of Tianjin Grand Theater is complex, and the stress distribution changes constantly in the unloading process. Through the simulation analysis of the whole unloading process, the stress distribution and deformation of the structure in different unloading steps were obtained. Besides, member configuration was predicated and preset in order to satisfy the target configuration when the project is completed. The simulation analysis verifies the feasibility of the unloading plan and provides a reference for the design and construction of long-span space steel structures in the future.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131023579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is normal that the distance between palm and camera lens is different in contactless recognition systems. Most of the prior work has only emphasized on issues of preprocessing, feature extraction and match. But the recognition affect due to the different distance of image is very few concerned. This paper presents the relationship between palm distance and the palmvein recognition performance from image clarity of ROI(Region of Interest), image structural difference and match results based on low-resolution palmvein images. Experimental results show that, differences of image clarity and structure are larger while distance of palmvein distance becomes large, also show that the match results becomes large, which will to some extent increase the false rejection.
{"title":"Analysis of Palm Vein Image Quality and Recognition with Different Distance","authors":"W. Jiaqiang, Yu Ming, Qu Hanbing, Li Bin","doi":"10.1109/ICDMA.2013.50","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.50","url":null,"abstract":"It is normal that the distance between palm and camera lens is different in contactless recognition systems. Most of the prior work has only emphasized on issues of preprocessing, feature extraction and match. But the recognition affect due to the different distance of image is very few concerned. This paper presents the relationship between palm distance and the palmvein recognition performance from image clarity of ROI(Region of Interest), image structural difference and match results based on low-resolution palmvein images. Experimental results show that, differences of image clarity and structure are larger while distance of palmvein distance becomes large, also show that the match results becomes large, which will to some extent increase the false rejection.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130843728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：