NS(Simulator Network) is an object-oriented visual simulator based on large-scale discrete event. It simulates not only the transmission of network data and topology architecture, but also all kinds of IP network circumstance. This paper describes the architecture and characteristics of NS, and also gives the technique and the general process based on NS. The instance of a streaming media applications-based adaptive congestion control algorithm is implemented and simulation results are analyzed. The experimental result shows that when the network is congested, the delay, delay jitter and throughput will be corresponding changes in objective phenomenon.
{"title":"Simulation and Analysis of a Streaming Media Congestion Control Algorithm Based on NS-2","authors":"Wei Mao, D. Qi, Congming Wu, Kangyi Zhang","doi":"10.1109/ICCIS.2012.282","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.282","url":null,"abstract":"NS(Simulator Network) is an object-oriented visual simulator based on large-scale discrete event. It simulates not only the transmission of network data and topology architecture, but also all kinds of IP network circumstance. This paper describes the architecture and characteristics of NS, and also gives the technique and the general process based on NS. The instance of a streaming media applications-based adaptive congestion control algorithm is implemented and simulation results are analyzed. The experimental result shows that when the network is congested, the delay, delay jitter and throughput will be corresponding changes in objective phenomenon.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127601847","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}
Objective To evaluate the efficacy of artificial liver support system (ALSS) in the treatment of liver failure patients. Methods This is a multi-center, controlled, large sample clinic trial. 916 patients with liver failure from 6 hospitals were studied and followed. All the patients received similar pharmacological manipulation according to one and the same protocol but were divided into an ALSS treatment group and a control group without ALSS treatment. The analysis of survival time was computed using the Kaplan-Maier method, and comparison among groups was done using Log-Rank and Breslow test. Results Survival time of acute liver failure patients was prolonged from 4.0 days to 8.0 days. ALSS with many times increased the survival time of acute liver failure patients. In addition, it increased the survival time of the patients in end stage of liver failure. The survival time of end stage patients of the two times ALSS group and the control group was 51.0 days vs 27.0 days. Conclusion ALSS has tendency to prolong the survival time; ALSS has obvious effect on survival time of acute liver failure and prolong their survival time; ALSS can affect the short-term survival time of end stage patients; ALSS times have an obvious effect on survival time of liver patients especially the acute severe hepatitis and chronic severe ones and chronic repeat ones. Multi-ALSS treatment is more effective than the standard medicinal liver care treatment. Multi-ALSS treatment could increase survival time of patients suffering from acute liver failure or middle and end stage liver failure. It is important and necessary to treat these patients with ALSS.
{"title":"Effect of Artificial Liver Support System on Survival Time of Severe Hepatitis Patients","authors":"Wen-fang Wu, Z. Jing","doi":"10.1109/ICCIS.2012.137","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.137","url":null,"abstract":"Objective To evaluate the efficacy of artificial liver support system (ALSS) in the treatment of liver failure patients. Methods This is a multi-center, controlled, large sample clinic trial. 916 patients with liver failure from 6 hospitals were studied and followed. All the patients received similar pharmacological manipulation according to one and the same protocol but were divided into an ALSS treatment group and a control group without ALSS treatment. The analysis of survival time was computed using the Kaplan-Maier method, and comparison among groups was done using Log-Rank and Breslow test. Results Survival time of acute liver failure patients was prolonged from 4.0 days to 8.0 days. ALSS with many times increased the survival time of acute liver failure patients. In addition, it increased the survival time of the patients in end stage of liver failure. The survival time of end stage patients of the two times ALSS group and the control group was 51.0 days vs 27.0 days. Conclusion ALSS has tendency to prolong the survival time; ALSS has obvious effect on survival time of acute liver failure and prolong their survival time; ALSS can affect the short-term survival time of end stage patients; ALSS times have an obvious effect on survival time of liver patients especially the acute severe hepatitis and chronic severe ones and chronic repeat ones. Multi-ALSS treatment is more effective than the standard medicinal liver care treatment. Multi-ALSS treatment could increase survival time of patients suffering from acute liver failure or middle and end stage liver failure. It is important and necessary to treat these patients with ALSS.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127649791","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 borehole sloughing type of collapsing is very common in the drilling process. And this condition may result in drill string sticking and enlarged hole and induce other underground complex conditions, which may affect the successful drilling and underground safety. This thesis analyzes the elements resulting in borehole sloughing, components and properties of the drilling fluid system, and drilling engineering factors; and it proposes the niche targeting but feasible prevention measures of instability from components and properties of drilling fluid to drilling process and operation channels through elements analysis of borehole sloughing type of collapsing; in addition, the thesis describes the implementation of multiple coordination and comprehensive measures for valid prevention of such collapsing in actual drilling process.
{"title":"Cause Analysis and Safety Measures for Borehole Sloughing Type of Collapsing","authors":"Zhengjun Long, Jingcheng Liu","doi":"10.1109/ICCIS.2012.99","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.99","url":null,"abstract":"The borehole sloughing type of collapsing is very common in the drilling process. And this condition may result in drill string sticking and enlarged hole and induce other underground complex conditions, which may affect the successful drilling and underground safety. This thesis analyzes the elements resulting in borehole sloughing, components and properties of the drilling fluid system, and drilling engineering factors; and it proposes the niche targeting but feasible prevention measures of instability from components and properties of drilling fluid to drilling process and operation channels through elements analysis of borehole sloughing type of collapsing; in addition, the thesis describes the implementation of multiple coordination and comprehensive measures for valid prevention of such collapsing in actual drilling process.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133678539","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}
We present a technique for a crosstalk compensation of a multi-axis force and torque sensor. Multi-axis sensor generates coupled output signals inevitably because of the coupled structure or manufacturing errors. In order to minimize crosstalk in output signals, a compensation matrix which decouples the output signals is required. In this paper, the compensation matrix based on the least squares method will be derived. The LabVIEW is used in the experiment because the flexibility of LabVIEW makes the creation of user-friendly data acquisition (DAQ) programs and compensation algorithm. Finally, we will compare the performances of the multi-axis force/torque sensor before and after using compensation matrix in order to confirm the effect of this method.
{"title":"A Crosstalk Compensation of a Multi-axis ForceTorque Sensor Based on the Least Squares Method Using LabVIEW","authors":"Daewoong Hong, Chuan Li, Jaehwa Jeong","doi":"10.1109/ICCIS.2012.12","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.12","url":null,"abstract":"We present a technique for a crosstalk compensation of a multi-axis force and torque sensor. Multi-axis sensor generates coupled output signals inevitably because of the coupled structure or manufacturing errors. In order to minimize crosstalk in output signals, a compensation matrix which decouples the output signals is required. In this paper, the compensation matrix based on the least squares method will be derived. The LabVIEW is used in the experiment because the flexibility of LabVIEW makes the creation of user-friendly data acquisition (DAQ) programs and compensation algorithm. Finally, we will compare the performances of the multi-axis force/torque sensor before and after using compensation matrix in order to confirm the effect of this method.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131777166","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}
Shuangyin Ren, Baoliang Li, Junhui Wang, Wenhua Dou, Chao Peng, Jiahui Sun, Lei He
Wormhole switching technology is widely used in High Performance Computer (HPC) systems. The delay estimation of wormhole switching is mainly focused on average packet delay. But in order to provide Quality of Service (QoS) guarantees, we should analyze the end-to-end delay bound of wormhole switching. Based on models of Credit Stall and Switch Allocation Stall, we use arrival curve to constrain the arrival flow, and service curve to describe the service ability which system can guarantee to the arrival flow. Together with some fundamental theorems in Deterministic Network Calculus, we give the delay upper bound of flows in 3D-Torus network.
{"title":"A Delay Estimation in HPC Wormhole Switching Based on Network Calculus","authors":"Shuangyin Ren, Baoliang Li, Junhui Wang, Wenhua Dou, Chao Peng, Jiahui Sun, Lei He","doi":"10.1109/ICCIS.2012.14","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.14","url":null,"abstract":"Wormhole switching technology is widely used in High Performance Computer (HPC) systems. The delay estimation of wormhole switching is mainly focused on average packet delay. But in order to provide Quality of Service (QoS) guarantees, we should analyze the end-to-end delay bound of wormhole switching. Based on models of Credit Stall and Switch Allocation Stall, we use arrival curve to constrain the arrival flow, and service curve to describe the service ability which system can guarantee to the arrival flow. Together with some fundamental theorems in Deterministic Network Calculus, we give the delay upper bound of flows in 3D-Torus network.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134539934","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 utilizes photographic surveying principle and uses digital camera to shoot and monitor the mine surface, and quickly collect mine spatial data. Based on the data, a 3D model of mine surface is built. The large scale maps of mine are made. Based on coordinates and 3D model in the period of different time, changes of mine surface are get obtained. The 3D model can help to get the shape of mine in time and test mine exploration and make adjustments based on the data.
{"title":"The Application of Digital Photogrammetry in Digital Information of Mine","authors":"Qun Zhao, Xiao Yan-Ma","doi":"10.1109/ICCIS.2012.315","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.315","url":null,"abstract":"This paper utilizes photographic surveying principle and uses digital camera to shoot and monitor the mine surface, and quickly collect mine spatial data. Based on the data, a 3D model of mine surface is built. The large scale maps of mine are made. Based on coordinates and 3D model in the period of different time, changes of mine surface are get obtained. The 3D model can help to get the shape of mine in time and test mine exploration and make adjustments based on the data.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134543547","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}
As one of the major commercial innovations in recent years, websites for group purchase have experienced a fast booming in domestic market. However, they have fell into a predicament because of the excessive competition. Analyzing the operating characteristics of these websites according to the Theory of Two-sided Markets, this paper finds out that one of the factors that limits the group-purchase websites from developing is the customer scale trap. Studying the platform mode of e-commerce in terms of network externalities, it further puts forward a new opinion, i.e., overcoming the trap through the accumulation of platform customer utility.
{"title":"Research on the \"Customer Scale Trap\" of Group-Purchase Websites' Business Mode","authors":"Chunying Cui","doi":"10.1109/ICCIS.2012.256","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.256","url":null,"abstract":"As one of the major commercial innovations in recent years, websites for group purchase have experienced a fast booming in domestic market. However, they have fell into a predicament because of the excessive competition. Analyzing the operating characteristics of these websites according to the Theory of Two-sided Markets, this paper finds out that one of the factors that limits the group-purchase websites from developing is the customer scale trap. Studying the platform mode of e-commerce in terms of network externalities, it further puts forward a new opinion, i.e., overcoming the trap through the accumulation of platform customer utility.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115224415","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}
Yupei Du, T. Fan, Shunli He, Zhenglong Xu, Guangfeng Liu
In order to increase the pertinence of regulating measures at the late water flooding development of F4 reservoir, analytic hierarchy process was used to evaluate the geologic development factors which influence the water flooding effect. A multi-factor comprehensive evaluation method was developed. The results indicated that the permeability of the thin layers which water was injected into, injection-production well spacing and the injection pressure were the major factors which influence water flooding effect. The application of the method in the F4 reservoir showed its practicality and effectiveness.
{"title":"A Study on the Countermeasures of Improving Water Flooding Effect in F4 Reservior","authors":"Yupei Du, T. Fan, Shunli He, Zhenglong Xu, Guangfeng Liu","doi":"10.1109/ICCIS.2012.50","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.50","url":null,"abstract":"In order to increase the pertinence of regulating measures at the late water flooding development of F4 reservoir, analytic hierarchy process was used to evaluate the geologic development factors which influence the water flooding effect. A multi-factor comprehensive evaluation method was developed. The results indicated that the permeability of the thin layers which water was injected into, injection-production well spacing and the injection pressure were the major factors which influence water flooding effect. The application of the method in the F4 reservoir showed its practicality and effectiveness.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116716947","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}
As a Platform as a Service (PaaS) designer, we should satisfy customers' demands of resources and to save resources in a cloud at the same time. In PaaS, one of the main problems is that if one of virtual machines' (VM) workload increases fast in a host, other VMs' performance characteristics may be influenced negatively. To solve the performance isolation problem, this paper gives a method. In this method, we use an algorithm to forecast all VMs' resources usage at first. Then we find which VMs' workloads may increase fast in future. We move these VMs to hosts which have more resources and other VMs' performance characteristics will not be affected at the same time. So the main problem now is which hosts we should use to move these VMs as mentioned above to. In this paper, we use Dynamic Programming method to solve this problem. So, with all of these algorithms, in this paper, we propose a strategy to solve Performance Isolation problem in PaaS.
{"title":"A Method for Solving the Performance Isolation Problem in PaaS Based on Forecast and Dynamic Programming","authors":"Jiayang Yu, R. Rao","doi":"10.1109/ICCIS.2012.23","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.23","url":null,"abstract":"As a Platform as a Service (PaaS) designer, we should satisfy customers' demands of resources and to save resources in a cloud at the same time. In PaaS, one of the main problems is that if one of virtual machines' (VM) workload increases fast in a host, other VMs' performance characteristics may be influenced negatively. To solve the performance isolation problem, this paper gives a method. In this method, we use an algorithm to forecast all VMs' resources usage at first. Then we find which VMs' workloads may increase fast in future. We move these VMs to hosts which have more resources and other VMs' performance characteristics will not be affected at the same time. So the main problem now is which hosts we should use to move these VMs as mentioned above to. In this paper, we use Dynamic Programming method to solve this problem. So, with all of these algorithms, in this paper, we propose a strategy to solve Performance Isolation problem in PaaS.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117306630","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}
Qilianshan tunnel is a key project on Lanzhou-Xinjiang passenger dedicated line, located in Gansu province in the Northwest China. It is subjected to geo-stress in soft rock with rich water. Anisotropic mechanical-hydraulic coupling model was performed to investigate the energy density, effective stress and maximum shear stress, displacements and plastic zone of surrounding rock. Consequently, research results show that estimating pore water pressure distribution is important during construction. Energy, effective stress and the maximum shear stress accumulation zone occur and the peak value is located at 2.1 m from side wall. The displacement of crown is most and reaches to 7 cm which is less than ultimate displacement in teams of Code of Design on Tunnel of Railway. Extracted deformation ahead of working face is significantly affected when the distance is less than 8 m. Transversal plastic zone is mainly located at crown, shoulder and invert. The depth of it is 4 m. Pore water pressure and energy distribution ahead of working face increases firstly, and then it reduces. The peak value is located at 10 m ahead of working face. Not only does the analysis method fit for Qilianshan tunnel, but it can be a reference for similar geological engineering.
{"title":"Anisotropic Mechanical-Hydraulic Coupling for Deep Buried Tunnel in Soft Rock with Rich Water","authors":"Ben-guo He, Zhiqiang Zhang, Tengfei Ma","doi":"10.1109/ICCIS.2012.76","DOIUrl":"https://doi.org/10.1109/ICCIS.2012.76","url":null,"abstract":"Qilianshan tunnel is a key project on Lanzhou-Xinjiang passenger dedicated line, located in Gansu province in the Northwest China. It is subjected to geo-stress in soft rock with rich water. Anisotropic mechanical-hydraulic coupling model was performed to investigate the energy density, effective stress and maximum shear stress, displacements and plastic zone of surrounding rock. Consequently, research results show that estimating pore water pressure distribution is important during construction. Energy, effective stress and the maximum shear stress accumulation zone occur and the peak value is located at 2.1 m from side wall. The displacement of crown is most and reaches to 7 cm which is less than ultimate displacement in teams of Code of Design on Tunnel of Railway. Extracted deformation ahead of working face is significantly affected when the distance is less than 8 m. Transversal plastic zone is mainly located at crown, shoulder and invert. The depth of it is 4 m. Pore water pressure and energy distribution ahead of working face increases firstly, and then it reduces. The peak value is located at 10 m ahead of working face. Not only does the analysis method fit for Qilianshan tunnel, but it can be a reference for similar geological engineering.","PeriodicalId":269967,"journal":{"name":"2012 Fourth International Conference on Computational and Information Sciences","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116265246","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}
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