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针对超密集网络（UDN）下传统切换流程的信令交互过多造成切换总时延的增加,导致用户体验质量下降的问题,文章提出了基于软件定义网络（SDN）和网络功能虚拟化（NFV）融合的超密集网络移动性管理算法,该算法给出了将SDN与NFV相结合的适应超密集网络的网络架构模型,在此基础上提出了优化的切换信令流程,并建立数学模型,进行性能分析。仿真结果表明,相较于传统算法,该算法可以减少切换总时延。

近年来,人们越来越重视自身以及家人的身体健康状况,针对这种现状研发了智慧家庭健康医疗系统。采用血压计、体脂秤和血糖仪等医疗设备定期获取血压、体脂和血糖等生理数据,再通过网关转发给服务器,然后通过大数据处理分析把异常情况反馈给用户,用户可以登录健康云平台实时了解自己的健康状况,及时采取相应的措施。此外,还提出了基于多传感器信息对老人跌倒算法进行判决,实现对老人跌倒的实时报警。大量测试与分析表明,该系统运行稳定可靠,对未来针对智慧医疗方面更多的应用研究具有一定的指导意义。

超密集组网是5G网络中满足日益增长业务量需求的关键技术之一。近年来,在由长期演进（LTE）小基站密集组网构成的超密集网络中,用户和业务数量快速增长,为了在无线网络中更好地保证用户的服务质量（QoS）,提升网络吞吐量,文章提出一种基于跨层有效容量的接入控制算法,该算法综合考虑用户QoS和信道状况,并且定义小基站的选择因子来决定用户设备接入的LTE小基站,在保证用户QoS的基础上,使得每个LTE小基站负载均衡,从而最大化超密集网络的容量。仿真结果表明,与传统算法相比,所提算法能够在保证用户QoS的同时显著提高系统容量。

随着物联网海量终端设备的接入以及不同的业务需求,需要实现网络范围内的服务灵活部署,提供不同等级的内容和服务。为此,文章提出一种基于多背包模型的分布式协同网络服务布局算法,通过网络各节点协同,获取全局网络状况,将网络服务实例的布局问题建模为多背包问题,求解得到网络服务实例最优布局。仿真结果表明,网络服务在网络中的合理布局可以最大化网络效益、提高节点效用比和响应率,有助于物联网及其应用的良好运行。

随着互联网应用的快速发展以及数据业务需求的爆炸式增长,无线网络面临着巨大的挑战,超密集异构网络是应对此挑战的一个重要解决方案。文章提出了一种联合基站连接、功率分配和信道分配的优化模型,其优化目标为最大网络吞吐量,同时增加了单个用户的服务质量约束,保证了用户公平性。为了求解联合优化模型,提出了迭代算法,仿真结果表明,所提算法能有效地提高网络吞吐量。

机器与机器之间的通信在现有蜂窝网架构中应用广泛。然而由于机器与机器通信终端数量巨大,当大量的终端同时发起随机接入请求时必然引发冲突碰撞、网络拥塞和延迟过度等问题。为了解决这些问题,提出一种基于终端分组的方法,根据能量消耗的快慢对机器终端进行分组,并对组设定优先级,能量消耗越快,其优先级越高,优先级高的组终端优先分配随机接入资源。仿真结果表明,该方法能够有效地降低碰撞概率,节省能量;同时还能提高终端成功接入率,降低延迟。

针对高校实验室开放性管理不足的问题,研制了基于物联网的实验设备智能管理系统。该系统在SQL Server 2005、Visual Studio 2012软件平台上使用ASP.NET、C#等技术搭建了设备管理的服务器管理软件,利用低功耗蓝牙、RFID（射频识别）和网关通信等技术实现对设备的智能感知,自动发现设备并进行状态的申报和记录,并且可以对设备进行预约、借用、归还和智能调度等自动化的管理和控制,提高了设备的利用率,节省了人力、物力和时间资源。

在网络虚拟化环境中,基于Stackelberg博弈模型提出了静态博弈算法下网络运营商对频谱的定价策略及静态和动态博弈算法下各虚拟运营商的频谱分配方法,并推导了各运营商收益最大时的纳什均衡点。该方法能同时满足网络运营商和虚拟网络运营商收益最大化的需求。仿真结果验证了算法的有效性及纳什均衡点的存在性。

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal on Communication / Tongxin Xuebao is the property of Journal on Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chinese Journal of Osteoporosis is the property of Chinese Journal of Osteoporosis and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal on Communication / Tongxin Xuebao is the property of Journal on Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal on Communication / Tongxin Xuebao is the property of Journal on Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To analyze the status quo of scientific research cognition and quality of medical staff and existing problems in a tertiary hospital of Zunyi City in order to provide reference for increasing the overall scientific research level and perfecting hospital internal management. Methods The questionnaire investigation method was adopted to collect the data of scientific research cognition and quality among medical staff in a hospital of Zunyi City. The collected data were analyzed by using the SPSS17.0 statistical software. Results The survey data of 212 questionnaires showed that the cognition on "whether the scientific research promotes the future development of hospital" had statistically significant difference among different levels of medical staff (P<0.01); the cognition on "necessity of hospital to carry out the scientific research work" had statistically significant difference among different education backgrounds of medical staff (P<0.01); the cognition on "whether clearing the hospital scientific system/application procedure" and "whether participating in or applying for the scientific research projects" had statistically significant difference among different professional titles of medical staff (P<0.05); the recognition on "whether seeking truth from facts or rigorously seeking study in the scientific research process" had statistically significant difference among different professional titles of medical staff (P<0.01). Among 143 medical staff participating in the research project, 58.7% of medical staff could basically and properly select the topics in daily medical practical work. Conclusion The medical staff have a higher degree of awareness on "whether the scientific research promotes the development of the hospital in the future", but the hospital scientific research strength does not have a high level of play, the high pressure, having no time to conduct, lack of training and guidance are the main factors restricting the medical staff to take part in scientific research activities. [ABSTRACT FROM AUTHOR]

Aiming at the high voltage in load center and over disturbance caused by the integration of large-scale coastal wind farm into grid, the author establishes, PSD-BPA, several models of offshore wind farm on the basis of land wind farm and taking collecting submarine cable in to consideration, analyzes the influence of wind power output on partial coastal static voltage under lumped model, land wind power model, land and offshore wind power model, and proposes wind turbine and SVC coordination control strategy. The result of analysis shows that the voltage of near region of offshore wind farm is high and is easily disturbed by wind, wind turbine and SVC coordination control strategy, therefore, is able to solve the voltage problem. [ABSTRACT FROM AUTHOR]

针对未来全域、全场景多样化的业务需求，6G网络需要提供场景化、个性化的服务能力。针对未来细粒度业务服务质量保障问题，提出了6G网络任务卸载与细粒度切片资源调度联合优化算法，联合考虑多MEC的计算卸载和网络切片的资源调度，在有限的资源内，最小化任务的执行时延和能耗成本，并采用异步训练的A3C强化学习算法进行求解。仿真结果表明，对比传统算法，该算法可以在满足用户业务需求的情况下降低计算成本，并且算法收敛速度快，可以实现快速决策。