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Research of network storage system based on erasure code 基于纠删码的网络存储系统研究
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6022994
Kechao Wang, Z. Jia, Mingkui Zong, Jingwei Yu
{"title":"Research of network storage system based on erasure code","authors":"Kechao Wang, Z. Jia, Mingkui Zong, Jingwei Yu","doi":"10.1109/EMEIT.2011.6022994","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6022994","url":null,"abstract":"Data availability is one of the most important properties of the network storage system. Data redundancy is the basic method to improve data availability. Thus some systems use replication to protect against data loss. This paper designs a network storage system based on erasure code, researches data place strategy and data read write operation flow, analyzes data availability and storage overhead of the erasure code strategy and the replication strategy, draws the conclusion that erasure code strategy can greatly improve data availability.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126610800","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}
引用次数: 0
Determination of five flavonoids in honeys by HPLC-ESI-MS/MS HPLC-ESI-MS/MS法测定蜂蜜中5种黄酮类化合物的含量
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023446
Xiaoli Hao, Fang Chen, Ying-bo Zhao, Hongfang Tian
{"title":"Determination of five flavonoids in honeys by HPLC-ESI-MS/MS","authors":"Xiaoli Hao, Fang Chen, Ying-bo Zhao, Hongfang Tian","doi":"10.1109/EMEIT.2011.6023446","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023446","url":null,"abstract":"A quantitative and quantitative method was established for determining 5 flavonoids in honeys by high performance chromatography-tendemmass/mass(HPLC-MS/MS). The samples were dissolved by deionized water, and then extracted by hexane-ethyl acetate solution with volume ratio of l:l, and the extract were centrifuged and evaporated. The residue were dissolved by methanol. The chromatography separation was performed on a C18 column with a gradient elution programmer using the mixture of methanol and 0.1% aqueous formic acid as mobile phase. The mass spectrometry equipped with an electrospray ionization source(ESI) was operated in the negative mode using multiple reaction monitoring(MRM). The linear relationship of the method was very obvious and the 5 flavonoids limits of quantization (LOQ) were 1.5μg/kg, the average spike recoveries situated between 64%∼89%, and the relative standard deviation(RSD) were 2.2%∼8.4%. The method is outstanding due to its precision and excellent separation effect and can be used for the determination of flavonoids in honey.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127553029","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}
引用次数: 0
A dynamic design method based on system reverse load for CDMA EV-DO RevA Qos 基于系统反向负载的CDMA EV-DO RevA Qos动态设计方法
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023315
Feng Zhan, Xiaotang Li
{"title":"A dynamic design method based on system reverse load for CDMA EV-DO RevA Qos","authors":"Feng Zhan, Xiaotang Li","doi":"10.1109/EMEIT.2011.6023315","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023315","url":null,"abstract":"CDMA EV-DO Rev.A has greatly enhanced support for real-time business. This article provides a design target at optimizing CDMA EV-DO Rev.A QoS algorithm to ensure better network performance.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114316697","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}
引用次数: 0
Position controller based on state observer for 6-DOF parallel teleoperation manipulator 基于状态观测器的六自由度并联遥操作机械臂位置控制器
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023450
Mingde Gong, Qiusheng Chang
{"title":"Position controller based on state observer for 6-DOF parallel teleoperation manipulator","authors":"Mingde Gong, Qiusheng Chang","doi":"10.1109/EMEIT.2011.6023450","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023450","url":null,"abstract":"The sense system of slave side for electro-hydraulic servo control telerobot is simplification and credibility, which is needed by work environment and test signal remote transfers. The displacement of slave side is only measured signal in this research and designs state observer for restructure velocity and acceleration state variables. Consider the influence of restructure error to position control and random disturbance of slave side, apply lower order output variable to make up of a output linear feedback system, design optimal controller to accomplish master-slave position tracking control and force feedback of bilateral servo control. Simulation and Experimental results are given to demonstrate the developed controller is availability and robustness to existence of outside random disturbance.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121861335","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}
引用次数: 0
The improved elliptic curve digital signature algorithm 改进的椭圆曲线数字签名算法
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6022868
Junru Hu
{"title":"The improved elliptic curve digital signature algorithm","authors":"Junru Hu","doi":"10.1109/EMEIT.2011.6022868","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6022868","url":null,"abstract":"ECDSA is the first successful algorithm that based on ECC. It was accepted by ANSI, IEEE, NIST and ISO as the standard signature algorithm. In this paper, ECDSA was analyzed and improved. The improved algorithms reduce the computational cost while keeping the same security as original ECDSA. They are suitable for the users who have limited compute capacity in different cases. The performance data of each algorithm was presented also.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"91 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126121338","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}
引用次数: 31
A new method for the analysis of temperature-dependent resistances and inductances of multiconductor cable 一种分析多导体电缆温度相关电阻和电感的新方法
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023408
Xiuhua Men, Yuzhen Ma, Haiyan Shao
{"title":"A new method for the analysis of temperature-dependent resistances and inductances of multiconductor cable","authors":"Xiuhua Men, Yuzhen Ma, Haiyan Shao","doi":"10.1109/EMEIT.2011.6023408","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023408","url":null,"abstract":"The whole mechanical test procession, especially transmission cable is effected evidently by environment temperature fluctuation. So of particular interest in the paper is to discuss the resistance and inductance parameters of multiconductor at environment of changing temperature. A new approach with the given formulas is presented to calculate electric parameters using finite element method. And then, the temperature-dependent characteristics of resistance and inductance are obtained, which are agreed with the result obtained by energy method. The change of equivalent current density for multiconductor also highlights the parameters change when proximate effect is considered. The result is shown that the temperature-dependent parameters bring more important responses on the terminal of circuit network containing certain deviation. It is shown that. For the first time, results are shown for the lossy transmission cable with temperature-dependent parameters characteristic, which are used to quantify the main practical engineering.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"02 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127189635","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}
引用次数: 0
Algorithm and strategy research of generating test paper for large scale online examination 大规模在线考试试卷生成算法与策略研究
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023042
G. Zhou, Tingting Liu, Xinxin Liu
{"title":"Algorithm and strategy research of generating test paper for large scale online examination","authors":"G. Zhou, Tingting Liu, Xinxin Liu","doi":"10.1109/EMEIT.2011.6023042","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023042","url":null,"abstract":"Algorithm and strategy directly affect the success rate, efficiency and quality of generating test paper. From the analysis of the usual requirement of the user proposition and the result of test paper, the algorithm of generating test paper based on the degree of difficulty is put forward as the strategy of step deals from the and the weight average model and discrete variable random binomially distributed model.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122839943","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}
引用次数: 4
Simulation of the self-sensing actuators based on multi-piezoelectric effects of piezoelectric crystal 基于压电晶体多压电效应的自传感作动器仿真
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023404
Lijing Wang, Liping Shi
{"title":"Simulation of the self-sensing actuators based on multi-piezoelectric effects of piezoelectric crystal","authors":"Lijing Wang, Liping Shi","doi":"10.1109/EMEIT.2011.6023404","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023404","url":null,"abstract":"Based on the theory of classical piezoelectricity and the rapid development of piezoelectric material today, it has become possible to integrate structure and function of sensor with actuators into the single piezoelectric element. This paper analyzes and simulates integrated sensor-actuators using coupled-field analysis function in the finite element analysis software ANSYS for 3-D finite element model which of models is PZT-5 piece. In the beginning of positive piezoelectric effect, the results show that voltage and displacement generated by secondary converse piezoelectric effects respectively have linear relationship with the applied outside force. The simulation results are proved that the functions of sensors and actuators can be integrated in the single piezoelectric crystal.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124409844","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}
引用次数: 0
Design and implementation of PDA-based mobile inquiring system for oil well logging information 基于pda的移动测井信息查询系统的设计与实现
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6022838
Dejun Liu, Dali Gong, Zhonghua Ma, Yue Liu
{"title":"Design and implementation of PDA-based mobile inquiring system for oil well logging information","authors":"Dejun Liu, Dali Gong, Zhonghua Ma, Yue Liu","doi":"10.1109/EMEIT.2011.6022838","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6022838","url":null,"abstract":"This article describes the PDA-based mobile inquiring system of oil well information and show the design of the systems. PDA-based mobile monitoring system for oil wells using the TCP/IP communication mechanism, the client PDA terminal through the WIFI and GPRS switch-in the data center. As the Web-Service provides the data service, one can carry on the dynamic monitor to the oil well and realize the dynamics of safety management, which improves staff efficiency effectively. This system has applied in the oil field monitoring system, provides the effective information technology support for the oil well site dispatching decision making, and improves the rapid reaction capability and work efficiency greatly.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121416015","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}
引用次数: 0
The simulation analysis of the centroid offset effects on braking performance 质心偏移对制动性能影响的仿真分析
International Conference on Electronic and Mechanical Engineering and Information Technology Pub Date : 1900-01-01 DOI: 10.1109/EMEIT.2011.6023013
Bing Li, Jiangwei Chu
{"title":"The simulation analysis of the centroid offset effects on braking performance","authors":"Bing Li, Jiangwei Chu","doi":"10.1109/EMEIT.2011.6023013","DOIUrl":"https://doi.org/10.1109/EMEIT.2011.6023013","url":null,"abstract":"In order to study centroid offset of the vehicle affects on the braking performance and the longitudinal and horizontal offset of the centroid affects on the stability, it analyses theoretically the relation between centroid position and braking performance. And it establishes the whole vehicle's model through simulation soft ADAMS/CAR of the dynamics and analyses the relation between longitudinal offset and the rotate speed and between horizontal offset and heading angle; the same condition, it analyses that horizontal offset of the centroid affects on horizontal replacement and heading angle. The Simulation result indicates : while the centroid moves longitudinal and forward, lateral stability becomes worse and while the centroid moves backward can increase to braking stability, but it makes easily the front wheel lose the turning ability; while the centroid happens to horizontal offset and along with the offset gradually increase, horizontal replacement and heading angle increase notability. It the centroid can be controlled while the vehicle brakes may enhance security of the vehicle.","PeriodicalId":221663,"journal":{"name":"International Conference on Electronic and Mechanical Engineering and Information Technology","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116847959","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}
引用次数: 0
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