The wireless sensor network(WSN),as the terminal data acquisition system of the 5G network,has attracted attention due to advantages such as low cost and easy deployment.Its development is mainly restricted by energy....The wireless sensor network(WSN),as the terminal data acquisition system of the 5G network,has attracted attention due to advantages such as low cost and easy deployment.Its development is mainly restricted by energy.The traditional transmission control scheme is not suitable for WSNs due to the significant information interaction.A switchable transmission control scheme for WSNs based on a queuing game(SQGTC)is proposed to improve network performance.Considering that sensor nodes compete for the resources of sink nodes to realize data transmission,the competitive relationship between nodes is described from the perspective of a game.Different types of sensor node requests require a sink node to provide different service disciplines.Mathematical models of social welfare are established for a sink node under the service disciplines of first-come,first-served(FCFS),egalitarian processor sharing(EPS),and shortest service first(SSF).The optimal service strategies are obtained by maximizing social welfare.The sensor nodes provide the expected benefits and satisfy the service requirements of the requests,and the sink node switches the transmission control strategy for the service.Simulation results show that the proposed scheme improves the data transmission efficiency of WSNs and achieves the optimal allocation of resources.展开更多
Purpose: This work aims to consider the role and some of the 42-year history of the discipline impact factor(DIF) in evaluation of serial publications. Also, the original "symmetric" indicator called the &qu...Purpose: This work aims to consider the role and some of the 42-year history of the discipline impact factor(DIF) in evaluation of serial publications. Also, the original "symmetric" indicator called the "discipline susceptibility factor" is to be presented. Design/methodology/approach: In accordance with the purpose of the work, the methods are analytical interpretation of the scientific literature related to this problem as well as speculative explanations. The information base of the research is bibliometric publications dealing with impact, impact factor, discipline impact factor, and discipline susceptibility factor.Findings: Examples of the DIF application and modification of the indicator are given. It is shown why research and university libraries need to use the DIF to evaluate serials in conditions of scarce funding for subscription to serial publications, even if open access is available. The role of the DIF for evaluating journals by authors of scientific papers when choosing a good and right journal for submitting a paper is also briefly discussed. An original indicator "symmetrical" to the DIF(the "discipline susceptibility factor") and its differences from the DIF in terms of content and purpose of evaluation are also briefly presented.Research limitations: The selection of publications for the information base of the research did not include those in which the DIF was only mentioned, used partially or not for its original purpose. Restrictions on the length of the article to be submitted in this special issue of the JDIS also caused exclusion even a number of completely relevant publications. Consideration of the DIF is not placed in the context of describing other derivatives from the Garfield impact factor. Practical implications: An underrated bibliometric indicator, viz. the discipline impact factor is being promoted for the practical application. An original indicator "symmetrical" to DIF has been proposed in order of searching serial publications representing the external research fields that might fit for potential applications of the results of scientific activities obtained within the framework of the specific research field represented by the cited specialized journals. Both can be useful in research and university libraries in their endeavors to improve scientific information services. Also, both can be used for evaluating journals by authors of scientific papers when choosing a journal to submit a paper.Originality/value: The article substantiates the need to evaluate scientific serial publications in library activities—even in conditions of access to huge and convenient databases(subscription packages) and open access to a large number of serial publications. It gives a mini-survey of the history of one of the methods of such evaluation, and offers an original method for evaluating scientific serial publications.展开更多
For a 2-station and 3-class reentrant line under first-buffer first-served(FBFS)service discipline in light traffic,we firstly construct the strong approximations for performance measures including the queue length,wo...For a 2-station and 3-class reentrant line under first-buffer first-served(FBFS)service discipline in light traffic,we firstly construct the strong approximations for performance measures including the queue length,workload,busy time and idle time processes.Based on the obtained strong approximations,we use a strong approximation method to find all the law of the iterated logarithms(LILs)for the above four performance measures,which are expressed as some functions of system parameters:means and variances of interarrival and service times,and characterize the fluctuations around their fluid approximations.展开更多
A multi-class single server queue under non-preemptive static buffer priority (SBP) service discipline is considered in this paper. Using a bounding technique, we obtain the fluid approximation for the queue length ...A multi-class single server queue under non-preemptive static buffer priority (SBP) service discipline is considered in this paper. Using a bounding technique, we obtain the fluid approximation for the queue length and busy time processes. Furthermore, we prove that the convergence rate of the fluid approximation for the queue length and busy time processes is exponential for large N. Additionally, a sufficient condition for stability is obtained.展开更多
In this paper,we derive the strong approximations for a four-class two station multi-class queuing network(Kumar-Seidman network) under a priority service discipline.Within a group,jobs are served in the order of ar...In this paper,we derive the strong approximations for a four-class two station multi-class queuing network(Kumar-Seidman network) under a priority service discipline.Within a group,jobs are served in the order of arrival,that is,a first-in-first-out disciple,and among groups,jobs are served under a pre-emptiveresume priority disciple.We show that if the input data(i.e.,the arrival and service processe) satisfy an approximation(such as the functional law-of-iterated logarithm approximation or the strong approximation),the output data(the departure processes) and the performance measures(such as the queue length,the work load and the sojourn time process) satisfy a similar approximation.展开更多
文章以中国知网和Web of Science收录的学科知识服务研究文献为数据源,采用文献计量分析和内容分析法,利用Citespace、Bicomb、SPSS软件对国内外学科知识服务相关文献进行分析。经分析得出当前国内外学科知识服务的研究主题、研究发展...文章以中国知网和Web of Science收录的学科知识服务研究文献为数据源,采用文献计量分析和内容分析法,利用Citespace、Bicomb、SPSS软件对国内外学科知识服务相关文献进行分析。经分析得出当前国内外学科知识服务的研究主题、研究发展、研究领域以及研究热点,并基于上述四个方面的分析揭示国内外学科知识服务在行为模式挖掘、研究数据管理、服务工具开发、用户隐私保护方面存在的差异,以为学科知识服务创新发展提供支持和参考。展开更多
高校图书馆开展的人才评价咨询服务就是按照职能部门要求,根据学术主体的基本信息采集学术客体信息,并利用特定的计量指标以图表形式呈现以供职能部门参考。图书馆在提供这类服务项目时通常被要求检索并审核某学者或团队的学术成果从而...高校图书馆开展的人才评价咨询服务就是按照职能部门要求,根据学术主体的基本信息采集学术客体信息,并利用特定的计量指标以图表形式呈现以供职能部门参考。图书馆在提供这类服务项目时通常被要求检索并审核某学者或团队的学术成果从而对其代表作做学术评价。探索波束图与学术迹在人才评价和学科咨询服务中的应用,对于促进高校图书馆学科服务转型升级具有重要意义。在学科服务与人才评价的基础上,分析科研生产力与学术影响力的可比性及其可视化,以引用代表作的文献的被引频次序列计算学术迹和影响矩,用这些指标评价代表作的学术影响力,并以领军人才以及典型高校的工程学这一学科为例,从InCites和Web of Science数据库中获取领军人才的论文题录信息及其代表作的被引文献题录信息,从ESI数据库中获取典型高校工程学的Top Papers数据,详细阐述波束图与学术迹在高校图书馆学科服务中应用的实施步骤。结果表明:波束图与学术迹相结合能够描绘特定时间内学者或典型高校的工程学这一学科的科研情况的整体轮廓,并从代表作这一侧面评价其学术影响力,且能够跨学科比较,可为高校图书馆开展学科服务提供参考。展开更多
基金supported by the Fundamental Research Funds for the Central Universities(Grant.No.FRF-BD-20-11A),C.G.(Cheng Gong)the Scientific and Technological Innovation Foundation of Shunde Graduate School,C.G.(Cheng Gong),USTB(Grant No.BK19AF005)the Industry University Research Cooperation Project No.39110067,C.G.(Cheng Gong).
文摘The wireless sensor network(WSN),as the terminal data acquisition system of the 5G network,has attracted attention due to advantages such as low cost and easy deployment.Its development is mainly restricted by energy.The traditional transmission control scheme is not suitable for WSNs due to the significant information interaction.A switchable transmission control scheme for WSNs based on a queuing game(SQGTC)is proposed to improve network performance.Considering that sensor nodes compete for the resources of sink nodes to realize data transmission,the competitive relationship between nodes is described from the perspective of a game.Different types of sensor node requests require a sink node to provide different service disciplines.Mathematical models of social welfare are established for a sink node under the service disciplines of first-come,first-served(FCFS),egalitarian processor sharing(EPS),and shortest service first(SSF).The optimal service strategies are obtained by maximizing social welfare.The sensor nodes provide the expected benefits and satisfy the service requirements of the requests,and the sink node switches the transmission control strategy for the service.Simulation results show that the proposed scheme improves the data transmission efficiency of WSNs and achieves the optimal allocation of resources.
文摘Purpose: This work aims to consider the role and some of the 42-year history of the discipline impact factor(DIF) in evaluation of serial publications. Also, the original "symmetric" indicator called the "discipline susceptibility factor" is to be presented. Design/methodology/approach: In accordance with the purpose of the work, the methods are analytical interpretation of the scientific literature related to this problem as well as speculative explanations. The information base of the research is bibliometric publications dealing with impact, impact factor, discipline impact factor, and discipline susceptibility factor.Findings: Examples of the DIF application and modification of the indicator are given. It is shown why research and university libraries need to use the DIF to evaluate serials in conditions of scarce funding for subscription to serial publications, even if open access is available. The role of the DIF for evaluating journals by authors of scientific papers when choosing a good and right journal for submitting a paper is also briefly discussed. An original indicator "symmetrical" to the DIF(the "discipline susceptibility factor") and its differences from the DIF in terms of content and purpose of evaluation are also briefly presented.Research limitations: The selection of publications for the information base of the research did not include those in which the DIF was only mentioned, used partially or not for its original purpose. Restrictions on the length of the article to be submitted in this special issue of the JDIS also caused exclusion even a number of completely relevant publications. Consideration of the DIF is not placed in the context of describing other derivatives from the Garfield impact factor. Practical implications: An underrated bibliometric indicator, viz. the discipline impact factor is being promoted for the practical application. An original indicator "symmetrical" to DIF has been proposed in order of searching serial publications representing the external research fields that might fit for potential applications of the results of scientific activities obtained within the framework of the specific research field represented by the cited specialized journals. Both can be useful in research and university libraries in their endeavors to improve scientific information services. Also, both can be used for evaluating journals by authors of scientific papers when choosing a journal to submit a paper.Originality/value: The article substantiates the need to evaluate scientific serial publications in library activities—even in conditions of access to huge and convenient databases(subscription packages) and open access to a large number of serial publications. It gives a mini-survey of the history of one of the methods of such evaluation, and offers an original method for evaluating scientific serial publications.
基金supported by the National Natural Science Foundation of China(No.11871116 and No.11971074)by the Fundamental Research Funds for the Central Universities(No.2023ZCJH02)。
文摘For a 2-station and 3-class reentrant line under first-buffer first-served(FBFS)service discipline in light traffic,we firstly construct the strong approximations for performance measures including the queue length,workload,busy time and idle time processes.Based on the obtained strong approximations,we use a strong approximation method to find all the law of the iterated logarithms(LILs)for the above four performance measures,which are expressed as some functions of system parameters:means and variances of interarrival and service times,and characterize the fluctuations around their fluid approximations.
基金Supported by National Natural Science Foundation of China(Grant No.10901023)the Fundamental Research Funds for the Central Universities(Grant Nos.BUPT2009RC0707 and BUPT2011RC0704)
文摘A multi-class single server queue under non-preemptive static buffer priority (SBP) service discipline is considered in this paper. Using a bounding technique, we obtain the fluid approximation for the queue length and busy time processes. Furthermore, we prove that the convergence rate of the fluid approximation for the queue length and busy time processes is exponential for large N. Additionally, a sufficient condition for stability is obtained.
文摘In this paper,we derive the strong approximations for a four-class two station multi-class queuing network(Kumar-Seidman network) under a priority service discipline.Within a group,jobs are served in the order of arrival,that is,a first-in-first-out disciple,and among groups,jobs are served under a pre-emptiveresume priority disciple.We show that if the input data(i.e.,the arrival and service processe) satisfy an approximation(such as the functional law-of-iterated logarithm approximation or the strong approximation),the output data(the departure processes) and the performance measures(such as the queue length,the work load and the sojourn time process) satisfy a similar approximation.
文摘文章以中国知网和Web of Science收录的学科知识服务研究文献为数据源,采用文献计量分析和内容分析法,利用Citespace、Bicomb、SPSS软件对国内外学科知识服务相关文献进行分析。经分析得出当前国内外学科知识服务的研究主题、研究发展、研究领域以及研究热点,并基于上述四个方面的分析揭示国内外学科知识服务在行为模式挖掘、研究数据管理、服务工具开发、用户隐私保护方面存在的差异,以为学科知识服务创新发展提供支持和参考。
文摘高校图书馆开展的人才评价咨询服务就是按照职能部门要求,根据学术主体的基本信息采集学术客体信息,并利用特定的计量指标以图表形式呈现以供职能部门参考。图书馆在提供这类服务项目时通常被要求检索并审核某学者或团队的学术成果从而对其代表作做学术评价。探索波束图与学术迹在人才评价和学科咨询服务中的应用,对于促进高校图书馆学科服务转型升级具有重要意义。在学科服务与人才评价的基础上,分析科研生产力与学术影响力的可比性及其可视化,以引用代表作的文献的被引频次序列计算学术迹和影响矩,用这些指标评价代表作的学术影响力,并以领军人才以及典型高校的工程学这一学科为例,从InCites和Web of Science数据库中获取领军人才的论文题录信息及其代表作的被引文献题录信息,从ESI数据库中获取典型高校工程学的Top Papers数据,详细阐述波束图与学术迹在高校图书馆学科服务中应用的实施步骤。结果表明:波束图与学术迹相结合能够描绘特定时间内学者或典型高校的工程学这一学科的科研情况的整体轮廓,并从代表作这一侧面评价其学术影响力,且能够跨学科比较,可为高校图书馆开展学科服务提供参考。