As personal computers have been recently improved in performance,a multi-tasking of running several applications at the same time has been generalized. Since only one task space is provided for performing such tasks i...As personal computers have been recently improved in performance,a multi-tasking of running several applications at the same time has been generalized. Since only one task space is provided for performing such tasks in the Windows operating system,a number of computer users feel inconvenience.In this paper,we suggest a 3D Virtual Desktop System which can show a process of switching task spaces in 3D motion using DirectX. Our system aims to make up for the weak points in the Windows operating system,and to provide a computer user with more spaces for performing several tasks as well as the intuitive UI(User Interface),such as Compiz of Linux.展开更多
This paper proposes a content addres sable storage optimization method, VDeskCAS, for desktop virtualization storage based disaster backup storage system. The method implements a blocklevel storage optimization, by em...This paper proposes a content addres sable storage optimization method, VDeskCAS, for desktop virtualization storage based disaster backup storage system. The method implements a blocklevel storage optimization, by employing the algorithms of chunking image file into blocks, the blockffmger calculation and the block dedup li cation. A File system in Use Space （FUSE） based storage process for VDeskCAS is also introduced which optimizes current direct storage to suit our content addressable storage. An interface level modification makes our system easy to extend. Experiments on virtual desktop image files and normal files verify the effectiveness of our method and above 60% storage volume decrease is a chieved for Red Hat Enterprise Linux image files. Key words： disaster backup; desktop virtualization; storage optimization; content addressable storage展开更多
Purpose: To present our videoconference system with medical information desktop sharing for radiation therapy and report initial experience using the system and its usefulness. Materials and Methods: A videoconference...Purpose: To present our videoconference system with medical information desktop sharing for radiation therapy and report initial experience using the system and its usefulness. Materials and Methods: A videoconference system for radiation therapy enables radiation oncologists sent to affiliated hospitals to consult a more experienced board-certified doctor at our institution while sharing the same display showing a patient’s information, radiology information system (RIS), and radiation therapy planning (RTP) system. We evaluated cases discussed in videoconferences to determine the influence of the system on treatment policies and radiation therapy plans. Results: From December 2012 to March 2013, treatment policies for 56 cases and radiation therapy plans for 50 cases were discussed in videoconferences. As for treatment policies, no change was made in treatment policy for 33 cases (59%), and minor and major changes were made for 16 (29%) cases and 7 (12%) cases, respectively. Radiation therapy plans for 50 cases were checked. No change was needed for 32 cases (64%), and minor and major changes were needed for 17 (34%) cases and 1 (2%) case, respectively. Conclusion: The videoconference system can be effective for improving the quality of radiation therapy.展开更多
数据可视化的完整流程包括数据采集、数据处理、数据分析及数据可视化4个环节。该文展示使用Power BI Desktop对豆瓣电影TOP250评分数据,进行多页面Web获取、处理及可视化展示的应用案例。首先,使用Power BI Desktop的M语言创建查询函数...数据可视化的完整流程包括数据采集、数据处理、数据分析及数据可视化4个环节。该文展示使用Power BI Desktop对豆瓣电影TOP250评分数据,进行多页面Web获取、处理及可视化展示的应用案例。首先,使用Power BI Desktop的M语言创建查询函数,通过添加列选择调用自定义函数,实现多页面Web数据源的连接与获取。接着,通过数据转换功能执行字段提取与数据类型转换,最终得到包含电影排名、名称、评分和上映年份等关键字段的数据表。最后,基于250部电影的评分数据创建数据可视化内容,包括柱形图、电影得分切片器及影片信息矩阵表格,根据电影评分数据为柱形图设置颜色递进效果,对切片器和影片信息矩阵表格添加联动效应,达到交互式的效果。展开更多
Desktop calibration of automatic transmission(AT) is a method which can reduce cost, enhance efficiency and shorten the development periods of a vehicle effectively. We primary introduced the principle and approach of...Desktop calibration of automatic transmission(AT) is a method which can reduce cost, enhance efficiency and shorten the development periods of a vehicle effectively. We primary introduced the principle and approach of desktop calibration of AT based on the condition of coupling characteristics between engine and torque converter and obtained right point exactly. It is shown to agree with experimental measurements reasonably well. It was used in different applications abroad based on AT technology and achieved a good performance of the vehicle compared with traditional AT technology which primary focuses on the drivability, performance and fuel consumption.展开更多
This paper introduces the middleman attack methods which are against the remote desktop protocol(RDP),discusses advantages and disadvantages of several current mainstream prevention strategies,and puts forward a new p...This paper introduces the middleman attack methods which are against the remote desktop protocol(RDP),discusses advantages and disadvantages of several current mainstream prevention strategies,and puts forward a new prevention strategy.The strategy,taking advantage of the original key agreement process of the RDP,designs a piecewise authentication scheme of the key agreement.Using the strategy can achieve the purpose of prevention and detection of middleman attacks.Finally,the security of the strategy is analyzed.展开更多
This paper gave a general evaluation on existing three popular free and open source desktop GIS projects,according to the selected evaluation criteria.To further the understanding of the open source software,this pape...This paper gave a general evaluation on existing three popular free and open source desktop GIS projects,according to the selected evaluation criteria.To further the understanding of the open source software,this paper also presented a customization example of QGIS with python and PyQT.展开更多
基金supported by the MKE(The Ministry of Knowledge Economy),Korea,through the ITRC(Information Technology Research Center)Support Program supervised by the NIPA(National IT Industry Promotion Agency)"(NIPA-2010-C1090-0803-0006)
文摘As personal computers have been recently improved in performance,a multi-tasking of running several applications at the same time has been generalized. Since only one task space is provided for performing such tasks in the Windows operating system,a number of computer users feel inconvenience.In this paper,we suggest a 3D Virtual Desktop System which can show a process of switching task spaces in 3D motion using DirectX. Our system aims to make up for the weak points in the Windows operating system,and to provide a computer user with more spaces for performing several tasks as well as the intuitive UI(User Interface),such as Compiz of Linux.
基金the Hi-tech Research and Development Program of China，the National Natural Science Foundation of China，the Beijing Natural Science Foundation，the Fundamental Research Funds for the Central Universities，the Fund of the State Key Laboratory of Software Development Environment
文摘This paper proposes a content addres sable storage optimization method, VDeskCAS, for desktop virtualization storage based disaster backup storage system. The method implements a blocklevel storage optimization, by employing the algorithms of chunking image file into blocks, the blockffmger calculation and the block dedup li cation. A File system in Use Space （FUSE） based storage process for VDeskCAS is also introduced which optimizes current direct storage to suit our content addressable storage. An interface level modification makes our system easy to extend. Experiments on virtual desktop image files and normal files verify the effectiveness of our method and above 60% storage volume decrease is a chieved for Red Hat Enterprise Linux image files. Key words： disaster backup; desktop virtualization; storage optimization; content addressable storage
文摘Purpose: To present our videoconference system with medical information desktop sharing for radiation therapy and report initial experience using the system and its usefulness. Materials and Methods: A videoconference system for radiation therapy enables radiation oncologists sent to affiliated hospitals to consult a more experienced board-certified doctor at our institution while sharing the same display showing a patient’s information, radiology information system (RIS), and radiation therapy planning (RTP) system. We evaluated cases discussed in videoconferences to determine the influence of the system on treatment policies and radiation therapy plans. Results: From December 2012 to March 2013, treatment policies for 56 cases and radiation therapy plans for 50 cases were discussed in videoconferences. As for treatment policies, no change was made in treatment policy for 33 cases (59%), and minor and major changes were made for 16 (29%) cases and 7 (12%) cases, respectively. Radiation therapy plans for 50 cases were checked. No change was needed for 32 cases (64%), and minor and major changes were needed for 17 (34%) cases and 1 (2%) case, respectively. Conclusion: The videoconference system can be effective for improving the quality of radiation therapy.
文摘数据可视化的完整流程包括数据采集、数据处理、数据分析及数据可视化4个环节。该文展示使用Power BI Desktop对豆瓣电影TOP250评分数据,进行多页面Web获取、处理及可视化展示的应用案例。首先,使用Power BI Desktop的M语言创建查询函数,通过添加列选择调用自定义函数,实现多页面Web数据源的连接与获取。接着,通过数据转换功能执行字段提取与数据类型转换,最终得到包含电影排名、名称、评分和上映年份等关键字段的数据表。最后,基于250部电影的评分数据创建数据可视化内容,包括柱形图、电影得分切片器及影片信息矩阵表格,根据电影评分数据为柱形图设置颜色递进效果,对切片器和影片信息矩阵表格添加联动效应,达到交互式的效果。
文摘Desktop calibration of automatic transmission(AT) is a method which can reduce cost, enhance efficiency and shorten the development periods of a vehicle effectively. We primary introduced the principle and approach of desktop calibration of AT based on the condition of coupling characteristics between engine and torque converter and obtained right point exactly. It is shown to agree with experimental measurements reasonably well. It was used in different applications abroad based on AT technology and achieved a good performance of the vehicle compared with traditional AT technology which primary focuses on the drivability, performance and fuel consumption.
基金the National Natural Science Foundation of China(No.61272500)the Beijing Natural Science Foundation(No.4142008)the Pre-launch of Beijing City Government Key Tasks and District Government Emergency Projects(No.Z131100005613030)
文摘This paper introduces the middleman attack methods which are against the remote desktop protocol(RDP),discusses advantages and disadvantages of several current mainstream prevention strategies,and puts forward a new prevention strategy.The strategy,taking advantage of the original key agreement process of the RDP,designs a piecewise authentication scheme of the key agreement.Using the strategy can achieve the purpose of prevention and detection of middleman attacks.Finally,the security of the strategy is analyzed.
文摘This paper gave a general evaluation on existing three popular free and open source desktop GIS projects,according to the selected evaluation criteria.To further the understanding of the open source software,this paper also presented a customization example of QGIS with python and PyQT.
