The electrical stimulation systems dedicated to generating unconventional waveforms have been shown to have a positive effect in the treatment of channelopathies, for example, in open-angle glaucoma. However, these si...The electrical stimulation systems dedicated to generating unconventional waveforms have been shown to have a positive effect in the treatment of channelopathies, for example, in open-angle glaucoma. However, these signals can be distorted due to different external circumstances, which could lead to counterproductive effects in treatments such as increased intraocular pressure IOP or other effects that are unknown due to poor electrical signaling. In the present work, a web control system capable of communicating with transcorneal electrical stimulation equipment is proposed for the remote control of treatments applied to patients suffering from various ocular channelopathies. As the first phase of this system, it will only focus on treating patients with open-angle glaucoma since this disease is characterized by an increase in IOP and can be immediately measured by an ophthalmologist.展开更多
目的对近年来中性粒细胞缺乏伴发热(FN)抗菌治疗相关文献进行计量与可视化分析,探讨该领域研究趋势与热点。方法检索Web of Science数据库,分析文献发表趋势、国家/地区、研究机构、期刊分布、作者影响力及关键词共现情况。利用VOSviewe...目的对近年来中性粒细胞缺乏伴发热(FN)抗菌治疗相关文献进行计量与可视化分析,探讨该领域研究趋势与热点。方法检索Web of Science数据库,分析文献发表趋势、国家/地区、研究机构、期刊分布、作者影响力及关键词共现情况。利用VOSviewer、Citespace和Scimago Graphica软件进行图谱分析,呈现FN抗菌治疗的研究热点与发展趋势。结果共纳入536篇文献,2014-2019年的年均发文量约为43篇,2020-2024年的年均发文量约为54篇,呈上升趋势。发文量最多的国家是美国(134篇,占25.00%);发文量最多的机构是墨尔本大学(18篇);发文量最多的作者是GUDIOL C(9篇)。关键词聚类分析显示,研究热点主要集中于“中性粒细胞缺乏伴发热”“抗菌药物管理”“免疫功能受损宿主”“风险评估”“成本效益分析”“经验性治疗”“金黄色葡萄球菌”方面。结论抗菌药物治疗FN相关研究的发文量近年来呈上升趋势,抗菌药物管理、免疫功能受损宿主治疗、耐药性控制及个性化治疗可能成为未来主要研究方向。展开更多
Winding/unwinding system control is a very important issue to web handling machines. In this paper, a novel adaptive H∞ control strategy is developed for winding process control. A gain scheduling scheme is proposed ...Winding/unwinding system control is a very important issue to web handling machines. In this paper, a novel adaptive H∞ control strategy is developed for winding process control. A gain scheduling scheme is proposed based on a neural fuzzy approximator to improve the transient response and enhance tension control;the controller’s convergence and adaptive capability can be further improved by an efficient hybrid training algorithm. The effectiveness of the proposed adaptive H∞ control is verified by experimental tests. Test results show that the developed gain approximator can adaptively accommodate parameter variations in the system and improve the control performance.展开更多
The paper proposes a conference control model between a web server and a telecom application server,referred to as the Conference Directed Graph(CDG) ,and describes an asynchronous communication mechanism between them...The paper proposes a conference control model between a web server and a telecom application server,referred to as the Conference Directed Graph(CDG) ,and describes an asynchronous communication mechanism between them. The Corba Interface Definition Language(IDL) interfaces are defined,and a message sequence chart is illustrated. This web conference control model provides conference users with a new approach to manage and control a conference and the participants. The performance of the system prototype is analyzed and verified in the 863 project named "The Multi-media and Mobile Services Enabled Soft-switch System".展开更多
目的应用文献计量学方法分析近10年来近视研究领域的现状、热点和未来的发展方向。方法检索Web of Science核心数据库中2013年1月1日至2022年12月31日近视相关的研究类和综述类文献,使用VOSviewer软件对国家、研究机构、作者进行共现分...目的应用文献计量学方法分析近10年来近视研究领域的现状、热点和未来的发展方向。方法检索Web of Science核心数据库中2013年1月1日至2022年12月31日近视相关的研究类和综述类文献,使用VOSviewer软件对国家、研究机构、作者进行共现分析,使用CiteSpace软件对关键词和共被引参考文献进行聚类分析。结果最终纳入9745篇文献,涉及123个国家或地区,7150个机构和29343位作者。通过分析发现全球在近视领域的发文量整体呈增长趋势,中国是发文量最多的国家,来自美国的研究总被引用次数最多。关键词分析结果表明,早期近视研究热点主要集中于屈光手术、并发症的诊断与治疗、遗传学研究以及流行病学特征,而近年来研究重点已迅速转向近视的预防和控制。共被引文献聚类分析结果显示,近视领域包含多个聚类模块,如#0学龄儿童、#1小切口角膜基质透镜取出术、#2近视控制、#3屈光不正、#4接触镜等研究方向。研究前沿主要聚焦于近视管理技术、近视与视网膜和脉络膜血管、人工智能在近视领域的应用等方面。结论近十年近视研究领域涵盖眼科学、分子生物学、遗传学、眼视光学、流行病学等多个学科领域。未来需要进一步探索近视的病因和发病机制、早期识别和筛查、管理技术、人工智能辅助诊断等,以制定更加有效、安全的近视防控策略。展开更多
A new admission control algorithm considering the network self-similar access characteristics is proposed. Taking advantage of the mathematical model of the network traffic admission control which can effectively over...A new admission control algorithm considering the network self-similar access characteristics is proposed. Taking advantage of the mathematical model of the network traffic admission control which can effectively overcome the self-similar characteristics of the network requests, through the scheduling of the differential service qucue based on priority while at the same time taking into account various factors including access characteristics of requests, load information, etc, smoothness of the admission control is ensured by the algorithm proposed in this paper. We design a non-linear self-adapting control algorithm by introducing an exponential admission function, thus overcomes the negative aspects introduced by static threshold parameters. Simulation results show that the scheme proposed in this paper can effectively improve the resource utilization of the clusters, while at the same time protecting the service with high priority. Our simulation results also show that this algorithm can improve system stability and reliability too. Key words Web cluster - admission control - differential service - self-similar - self-adapting CLC number TP 393 Foundation item: Supported by the National Natural Science Foundation of China (10375024) and the Hunan Natural Science Foundation of China(03JJY4054)Biography: LIU An-feng(1971-), male, Ph. D candidate, majoring in network computing, Web QoS.展开更多
Emerging cloud computing has introduced new platforms for developing enterprise academic web applications, where software, platforms and infrastructures are published to the globe as services. Software developers can ...Emerging cloud computing has introduced new platforms for developing enterprise academic web applications, where software, platforms and infrastructures are published to the globe as services. Software developers can build their systems by multiple invocations of these services. This research is devoted to investigating the management and data flow control over enterprise academic web applications where web services and developed academic web application are constructing infrastructure-networking scheme at the application level. Academic web services are invoked over http port and using REST based protocol;thus traditional access control method is not enough to control the follow of data using host and port information. The new cloud based access control rules proposed here are to be designed and implemented to work at this level. The new proposed access control architecture will be a web service gateway, and it published itself as a service (SaaS). We used three case studies to test our moodle and then we apply JSON parsers to perceive web service description file (WSDL file) and supply policies according to data are to be allowed or denied based on user roll through our parsing.展开更多
Sea ice in the western Antarctic Peninsula （WAP） region is both highly variable and rapidly changing. In the Palmer Station region, the ice season duration has decreased by 92 d since 1978. The sea-ice changes affec...Sea ice in the western Antarctic Peninsula （WAP） region is both highly variable and rapidly changing. In the Palmer Station region, the ice season duration has decreased by 92 d since 1978. The sea-ice changes affect ocean stratification and freshwater balance and in turn impact every component of the polar marine ecosystem. Long-term observations from the WAP nearshore and offshore regions show a pattern of chlorophyll （Chl） variability with three to five years of negative Chl anomalies interrupted by one or two years of positive anomalies （high and low Chl regimes）. Both field observations and results from an inverse food-web model show that these high and low Chl regimes differed significantly from each other, with high primary productivity and net community production （NCP） and other rates associated with the high Chl years and low rates with low Chl years. Gross primary production rates （GPP） averaged 30 mmolC.m^-2.d^-1 in the low Chl years and 100 mmolC.m-2.d1 in the high Chl years. Both large and small phytoplankton were more abundant and more productive in high Chl years than in low Chl years. Similarly, krill were more important as grazers in high Chl years, but did not differ from microzooplankton in high or low Chl years. Microzooplankton did not differ between high and low Chl years. Net community production differed significantly between high and low Chl years, but mobilized a similar proportion of GPP in both high and low Chl years. The composition of the NCP was uniform in high and low Chl years. These results emphasize the importance of microbial components in the WAP plankton system and suggest that food webs dominated by small phytoplankton can have pathways that funnel production into NCP, and likely, export.展开更多
The stretching process,as a key phase of web production system,pursues the target velocities of rollers and the web tensions of spans between the successive rollers to guarantee proper stretching ratios. This requires...The stretching process,as a key phase of web production system,pursues the target velocities of rollers and the web tensions of spans between the successive rollers to guarantee proper stretching ratios. This requires the stable velocities and velocity ratios of large number rollers separated throughout the workshop. To this goal,a distributed cooperative controller is designed to coordinate the velocities of the rollers to the desired values as well as the target ratios between the upper and lower rollers. During the whole evolution,only the neighbor rollers can exchange the working information,and neither global information nor central controller is required. It is proven that all the rollers asymptotically achieve the desired velocity ratios via the proposed control law,which is also demonstrated by numerical simulation.展开更多
In the traditional project of industry control, the field operator is the only man who watches production condition at the production spot. Enterprise administers cannot obtain real-time production status and make rea...In the traditional project of industry control, the field operator is the only man who watches production condition at the production spot. Enterprise administers cannot obtain real-time production status and make real-time decision if they don’t reach the production spot. Because of the development of Embedded Web Server such status is being changed. The remote monitor and control mode based on Embedded Web Server provides complete exact real-time information for managers, and makes it possible to make a decision in real time. In the paper, the design and implements of Embedded Web Server are presented and the key realization technology of it is described in detail. EWS (Embedded Web Server) will effectively lower system operating cost and improve maintaining efficiency, which has wide application prospect and popularization value in industrial control systems.展开更多
文摘The electrical stimulation systems dedicated to generating unconventional waveforms have been shown to have a positive effect in the treatment of channelopathies, for example, in open-angle glaucoma. However, these signals can be distorted due to different external circumstances, which could lead to counterproductive effects in treatments such as increased intraocular pressure IOP or other effects that are unknown due to poor electrical signaling. In the present work, a web control system capable of communicating with transcorneal electrical stimulation equipment is proposed for the remote control of treatments applied to patients suffering from various ocular channelopathies. As the first phase of this system, it will only focus on treating patients with open-angle glaucoma since this disease is characterized by an increase in IOP and can be immediately measured by an ophthalmologist.
文摘目的对近年来中性粒细胞缺乏伴发热(FN)抗菌治疗相关文献进行计量与可视化分析,探讨该领域研究趋势与热点。方法检索Web of Science数据库,分析文献发表趋势、国家/地区、研究机构、期刊分布、作者影响力及关键词共现情况。利用VOSviewer、Citespace和Scimago Graphica软件进行图谱分析,呈现FN抗菌治疗的研究热点与发展趋势。结果共纳入536篇文献,2014-2019年的年均发文量约为43篇,2020-2024年的年均发文量约为54篇,呈上升趋势。发文量最多的国家是美国(134篇,占25.00%);发文量最多的机构是墨尔本大学(18篇);发文量最多的作者是GUDIOL C(9篇)。关键词聚类分析显示,研究热点主要集中于“中性粒细胞缺乏伴发热”“抗菌药物管理”“免疫功能受损宿主”“风险评估”“成本效益分析”“经验性治疗”“金黄色葡萄球菌”方面。结论抗菌药物治疗FN相关研究的发文量近年来呈上升趋势,抗菌药物管理、免疫功能受损宿主治疗、耐药性控制及个性化治疗可能成为未来主要研究方向。
文摘Winding/unwinding system control is a very important issue to web handling machines. In this paper, a novel adaptive H∞ control strategy is developed for winding process control. A gain scheduling scheme is proposed based on a neural fuzzy approximator to improve the transient response and enhance tension control;the controller’s convergence and adaptive capability can be further improved by an efficient hybrid training algorithm. The effectiveness of the proposed adaptive H∞ control is verified by experimental tests. Test results show that the developed gain approximator can adaptively accommodate parameter variations in the system and improve the control performance.
基金the National High-Tech Research and De-velopment Plan of China (No.2001AA121021)the Na-tional Research Foundation for the Doctoral Program of Higher Education of China (No.20020013004)+2 种基金the Na-tional Grand Fundamental Research 973 Program of China (No.2003CB314806)the National Natural Science Foundation for Distinguished Young Scholars of China (No.60125101)the Cheung Kong Scholar’s Program and the Promotion Project for Creative Teams of the Ministry of Education (Networking Theory and Tech-nology in Telecommunication) (No.IRT0410).
文摘The paper proposes a conference control model between a web server and a telecom application server,referred to as the Conference Directed Graph(CDG) ,and describes an asynchronous communication mechanism between them. The Corba Interface Definition Language(IDL) interfaces are defined,and a message sequence chart is illustrated. This web conference control model provides conference users with a new approach to manage and control a conference and the participants. The performance of the system prototype is analyzed and verified in the 863 project named "The Multi-media and Mobile Services Enabled Soft-switch System".
文摘目的应用文献计量学方法分析近10年来近视研究领域的现状、热点和未来的发展方向。方法检索Web of Science核心数据库中2013年1月1日至2022年12月31日近视相关的研究类和综述类文献,使用VOSviewer软件对国家、研究机构、作者进行共现分析,使用CiteSpace软件对关键词和共被引参考文献进行聚类分析。结果最终纳入9745篇文献,涉及123个国家或地区,7150个机构和29343位作者。通过分析发现全球在近视领域的发文量整体呈增长趋势,中国是发文量最多的国家,来自美国的研究总被引用次数最多。关键词分析结果表明,早期近视研究热点主要集中于屈光手术、并发症的诊断与治疗、遗传学研究以及流行病学特征,而近年来研究重点已迅速转向近视的预防和控制。共被引文献聚类分析结果显示,近视领域包含多个聚类模块,如#0学龄儿童、#1小切口角膜基质透镜取出术、#2近视控制、#3屈光不正、#4接触镜等研究方向。研究前沿主要聚焦于近视管理技术、近视与视网膜和脉络膜血管、人工智能在近视领域的应用等方面。结论近十年近视研究领域涵盖眼科学、分子生物学、遗传学、眼视光学、流行病学等多个学科领域。未来需要进一步探索近视的病因和发病机制、早期识别和筛查、管理技术、人工智能辅助诊断等,以制定更加有效、安全的近视防控策略。
文摘A new admission control algorithm considering the network self-similar access characteristics is proposed. Taking advantage of the mathematical model of the network traffic admission control which can effectively overcome the self-similar characteristics of the network requests, through the scheduling of the differential service qucue based on priority while at the same time taking into account various factors including access characteristics of requests, load information, etc, smoothness of the admission control is ensured by the algorithm proposed in this paper. We design a non-linear self-adapting control algorithm by introducing an exponential admission function, thus overcomes the negative aspects introduced by static threshold parameters. Simulation results show that the scheme proposed in this paper can effectively improve the resource utilization of the clusters, while at the same time protecting the service with high priority. Our simulation results also show that this algorithm can improve system stability and reliability too. Key words Web cluster - admission control - differential service - self-similar - self-adapting CLC number TP 393 Foundation item: Supported by the National Natural Science Foundation of China (10375024) and the Hunan Natural Science Foundation of China(03JJY4054)Biography: LIU An-feng(1971-), male, Ph. D candidate, majoring in network computing, Web QoS.
文摘Emerging cloud computing has introduced new platforms for developing enterprise academic web applications, where software, platforms and infrastructures are published to the globe as services. Software developers can build their systems by multiple invocations of these services. This research is devoted to investigating the management and data flow control over enterprise academic web applications where web services and developed academic web application are constructing infrastructure-networking scheme at the application level. Academic web services are invoked over http port and using REST based protocol;thus traditional access control method is not enough to control the follow of data using host and port information. The new cloud based access control rules proposed here are to be designed and implemented to work at this level. The new proposed access control architecture will be a web service gateway, and it published itself as a service (SaaS). We used three case studies to test our moodle and then we apply JSON parsers to perceive web service description file (WSDL file) and supply policies according to data are to be allowed or denied based on user roll through our parsing.
基金supported by NSF Polar Programs awards ANT-1344502 and PLR-1440435 to HWD at Lamont-Doherty Earth ObservatorySFS and SCD were supported partly by Woods Hole Oceanographic Institution
文摘Sea ice in the western Antarctic Peninsula （WAP） region is both highly variable and rapidly changing. In the Palmer Station region, the ice season duration has decreased by 92 d since 1978. The sea-ice changes affect ocean stratification and freshwater balance and in turn impact every component of the polar marine ecosystem. Long-term observations from the WAP nearshore and offshore regions show a pattern of chlorophyll （Chl） variability with three to five years of negative Chl anomalies interrupted by one or two years of positive anomalies （high and low Chl regimes）. Both field observations and results from an inverse food-web model show that these high and low Chl regimes differed significantly from each other, with high primary productivity and net community production （NCP） and other rates associated with the high Chl years and low rates with low Chl years. Gross primary production rates （GPP） averaged 30 mmolC.m^-2.d^-1 in the low Chl years and 100 mmolC.m-2.d1 in the high Chl years. Both large and small phytoplankton were more abundant and more productive in high Chl years than in low Chl years. Similarly, krill were more important as grazers in high Chl years, but did not differ from microzooplankton in high or low Chl years. Microzooplankton did not differ between high and low Chl years. Net community production differed significantly between high and low Chl years, but mobilized a similar proportion of GPP in both high and low Chl years. The composition of the NCP was uniform in high and low Chl years. These results emphasize the importance of microbial components in the WAP plankton system and suggest that food webs dominated by small phytoplankton can have pathways that funnel production into NCP, and likely, export.
基金National Natural Science Foundations of China(Nos.61203073,61134009)Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20120075120008)+2 种基金Foundation of Key Laboratory of System Control and Information Processing,Ministry of Education,China(No.SCIP2012002)Program for Changjiang Scholars and Innovation Research Team in University from the Ministry of Education,China(No.IRT1220)Specialized Research Fund for Shanghai Leading Talents,Project of the Shanghai Committee of Science and Technology(No.13JC1407500)
文摘The stretching process,as a key phase of web production system,pursues the target velocities of rollers and the web tensions of spans between the successive rollers to guarantee proper stretching ratios. This requires the stable velocities and velocity ratios of large number rollers separated throughout the workshop. To this goal,a distributed cooperative controller is designed to coordinate the velocities of the rollers to the desired values as well as the target ratios between the upper and lower rollers. During the whole evolution,only the neighbor rollers can exchange the working information,and neither global information nor central controller is required. It is proven that all the rollers asymptotically achieve the desired velocity ratios via the proposed control law,which is also demonstrated by numerical simulation.
文摘In the traditional project of industry control, the field operator is the only man who watches production condition at the production spot. Enterprise administers cannot obtain real-time production status and make real-time decision if they don’t reach the production spot. Because of the development of Embedded Web Server such status is being changed. The remote monitor and control mode based on Embedded Web Server provides complete exact real-time information for managers, and makes it possible to make a decision in real time. In the paper, the design and implements of Embedded Web Server are presented and the key realization technology of it is described in detail. EWS (Embedded Web Server) will effectively lower system operating cost and improve maintaining efficiency, which has wide application prospect and popularization value in industrial control systems.
