Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices,an interest in LBS (Location Based Service) is arising. To provide location based service,tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then,store and manage have been studied. In this paper,we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques,we update the MODBMS when moving object arrived at a street intersection or a curved road which is rpresented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique,location data that are corresponding to the node in topology are stored,thus reduce the number of update and amount of data. Also in case predicting the location, because topology are used as well as existing location information,accuracy for prediction is increased than applying linear function or spline function.     

基于MS建模方法的基本面分析师预测行为研究

从证券市场参与者的有限理性出发，分析了基本面分析师在进行价格预测的过程中所面临的复杂制度环境。通过MS（Microscopic Simulation）的建模方法，考虑了证券市场交易制度和各类参与者的决策规则之间的相互作用，建立了仿真的证券市场。仿真的结果表明，当公司具备投青价值且上市公司盈余管理能力较强时，基本面分析师即使能够分析出上市公司的真正业绩，仍会用粉饰过的盈余进行股价的预测．     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.     

Extraction and DNA Digestion of 5'-Phosphodiesterase from Malt Root

This study investigated the extraction of 5'-phosphodiesterase from malt root and the degradation of nucleic acids by this enzyme.The extraction used grade precipitation with ammonium sulfate and enzy-matic hydrolysis.Samples were assayed using the modified Bradford method and high performance liquid chromatography.The results show that 5'-phosphodiesterase is isolated by grade precipitation with 30% and 80% saturation of ammonium sulfate and can be utilized to degrade deoxydbonucleic acid.The hydrolysate has four kinds of deoxynucleotides: 5'-dCMP,5'-dTMP,5'-dAMP,and 5'-dGMP.The optimum reaction tem-perature is 70℃,and the optimum pH is 5.5-6.0 for the reaction.The percentage of deoxynucleotides indi-ceted by the China Pharmacopoeia (2000 edition) in the product is over 70%.The extraction of 5'-phosphodiesterase from malt root is shown to be possible and economical.Products from the enzymatic hydrolysate of DNA meet the pharmacopoeia.     

Implementation of spatial touch system using time-of-flight camera

Recently developed time-of-flight principle based depth-sensing video camera technologies provide precise per-pixel range data in addition to color video. Such cameras will find application in robotics and vision-based human computer interaction scenarios such as games and gesture input systems. Time-of-flight principle range cameras are becoming more and more available. They promise to make the 3D reconstruction of scenes easier, avoiding the practical issues resulting from 3D imaging techniques based on t...     

分布式无线通信系统中STBC和V-BLAST的组合方案

在分布式天线分簇放置的单用户分布式无线通信系统中,为了有效地实现下行分集与复用的折中,提出了一种空时分组码(space-time block code,STBC)和垂直分层发送方案(vertical bell-labs layered space time,V-BLAST)的组合方案。在发送端根据反馈的发送相关矩阵的特征值,提出了天线选择和功率、速率分配的方案,使得系统误符号率(symbol error rate,SER)的上界最小。仿真结果表明:不同方案实际SER性能之间的关系和通过SER上界得到的关系完全一致。该方案简化了下行发送方案的设计,适合于实际应用。     

Effects of Glycerol in the Refolding and Unfolding of Creatine Kinase

IntroductionProtein folding is the process by which the aminoacid sequence of a protein determines the three-dimensional conformation of the functionalprotein[1 ] . The elucidation of the molecularmechanism of protein folding from a disorderedpolypeptide chain to the specific native stateremains one of the major challenges inbiochemistry[2 ,3] ,namely,deciphering the secondhalf of the genetic code[4 ] .Molecular chaperonesplay an importantrole in protein folding in vivo aswell asin vitro.A cha…     

A recovery method using recently updated record information in shared-nothing spatial database cluster

A shared-nothing spatial database cluster is system that provides continuous service even if some system failure happens in any node. So, an efficient recovery of system failure is very important. Generally, the existing method recovers the failed node by using both cluster log and local log. This method, however, cause several problems that increase communication cost and size of cluster log. This paper proposes novel recovery method using recently updated record information in shared-nothing spatial database cluster. The proposed technique utilizes update information of records and pointers of actual data. This makes a reduction of log size and communication cost.Consequently, this reduces recovery time of failed node due to less processing of update operations.