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服务器可服务性测试评价标准研究
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作者 钟伟军 李雪莲 +1 位作者 陈颖 庞婷 《中国标准化》 2023年第13期159-163,共5页
为推动国内服务器企业建立高质量服务能力,全面提升产品竞争力,形成产业综合优势,本文开展了服务器产品可服务性测评标准研究。该标准制定了服务器产品可服务性测评指标体系,定义了可服务性业务场景,梳理细化了可服务性测评指标,提出了... 为推动国内服务器企业建立高质量服务能力,全面提升产品竞争力,形成产业综合优势,本文开展了服务器产品可服务性测评标准研究。该标准制定了服务器产品可服务性测评指标体系,定义了可服务性业务场景,梳理细化了可服务性测评指标,提出了可服务性测评算法模型。本文提出的服务器可服务性测评指标为我国服务器行业建立产品可服务性评价、服务器制造企业的可服务产品研发和服务器用户产品选型评价提供了参考。 展开更多
关键词 服务 可服务性 业务场景 量化测评 评价模型
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新产品开发过程中的可服务性设计 被引量:1
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作者 田凤勇 刘艳琴 《装备制造技术》 2016年第1期223-224,227,共3页
由于产品集成的日益复杂和设计开发的精细化分工,可服务性设计被更早地介入到新产品开发过程中去。这为降低设备后期的维护成本打下了良好的基础。针对新产品开发和后期维护的可服务设计产生和实现,通过两个案例进行了深入浅出地剖析。
关键词 可服务性设计 服务需求 新产品开发 服务绩效
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汽车零部件的可服务性分析
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作者 黄心龙 《汽车维修与保养》 2019年第12期72-75,共4页
我国汽车工业在过去十年时间里迎来了爆发式的增长,据统计,2018年我国汽车保有量已经超过2.4亿辆,其中乘用车保有量超过2亿辆。汽车保有量的增长带动了汽车后市场的快速发展,2015年-2018年,中国汽车后市场行业规模从7600亿元增长至1290... 我国汽车工业在过去十年时间里迎来了爆发式的增长,据统计,2018年我国汽车保有量已经超过2.4亿辆,其中乘用车保有量超过2亿辆。汽车保有量的增长带动了汽车后市场的快速发展,2015年-2018年,中国汽车后市场行业规模从7600亿元增长至12900亿元,2018年仅汽车维修保养市场规模就达到了7100亿元。 展开更多
关键词 汽车后市场 汽车保有量 汽车零部件 汽车维修保养 可服务性 我国汽车工业 乘用车保有量 爆发式
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面向服务型制造的产品设计信息集成方法 被引量:3
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作者 张凯 赵武 +1 位作者 王杰 郭鑫 《工程科学与技术》 EI CAS CSCD 北大核心 2018年第2期204-211,共8页
随着制造业与服务业的不断融合,服务在制造业中发挥着越来越重要的作用。为了辅助设计者在产品设计过程中实现产品的可服务性,提出一种面向服务型制造的产品设计信息集成方法。为实现产品设计信息的集成,首先分析了产品全生命周期中制... 随着制造业与服务业的不断融合,服务在制造业中发挥着越来越重要的作用。为了辅助设计者在产品设计过程中实现产品的可服务性,提出一种面向服务型制造的产品设计信息集成方法。为实现产品设计信息的集成,首先分析了产品全生命周期中制造与服务之间的关系,提出了制造与服务的融合模式,并以服务型检核表的形式引导设计者进行产品可服务性创新设计。分析了服务型制造各阶段中信息的流动和映射模式,提出了以决策模块、设计模块、制造模块、运行维护模块和回收模块5大模块为驱动的服务型制造信息集成策略,构建了服务型制造信息框架结构。在此基础上,为合理组织产品设计、制造、服务等信息资源并有效支持服务和制造过程,提出了一种基于模块驱动的服务型制造信息集成模型。考虑到产品设计各阶段所需的信息资源需要经过收集、组织、匹配等过程才能为设计者所用,采用本体语义扩展对服务策略和服务知识进行规范表达,以最终实现信息服务。该方法以驱动模块将产品全生命周期中各阶段所需的信息与业务流程建立起联系,用于对服务型制造所需信息资源的追踪和运用。最后,开发了服务型制造产品设计信息集成原型系统,并以废旧印刷电路板的回收作为案例,验证了该方法的可行性和有效性。 展开更多
关键词 服务型制造 产品设计 可服务性 模块驱动 信息集成
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APC做服务
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作者 唐毅 《中国经济和信息化》 1999年第4期49-49,共1页
UPS的作用是保护所有数据经过和存在的地方,一旦UPS出现问题,系统就会完全陷入瘫痪。因此UPS产品面临的服务是针对关键任务设置的,比通常意义上的服务层次更高。它是以高可用性、高可靠性为前提的。 近几年,硬件、软件产业在增强系统的... UPS的作用是保护所有数据经过和存在的地方,一旦UPS出现问题,系统就会完全陷入瘫痪。因此UPS产品面临的服务是针对关键任务设置的,比通常意义上的服务层次更高。它是以高可用性、高可靠性为前提的。 近几年,硬件、软件产业在增强系统的高可靠性方面取得了长足的进步,例如磁盘阵列、集成与映射技术等。UPS业界也有同样的贡献,如APC公司的Symmetra电源阵列将UPS的综合性能提高了4倍,将可用性由原先的95%提高到99.999%。 展开更多
关键词 Symmetra 电源阵列 保修期 电力保护 关键任务 可服务性 映射技术 高可靠性 服务层次 高可用性
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性能稳定、效率高——Sun Enterprise系列和Sun Fire系列服务器
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《信息技术教育》 2003年第8期100-100,共1页
关键词 SunEnterprise系列服务 SunFire系列服务 可靠性 可用性 可服务性
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融合下一代电信级IP网的核心引擎-TB级路由器
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作者 曾斌 曾凯 +1 位作者 王宇熙 杨英 《计算机系统应用》 2005年第5期18-21,共4页
本文分析了目前电信级核心网络中存在的急需解决的问题,介绍了T比特路由器作为融合下一代电信级IP 网的核心引擎的各项技术优势以及它是如何解决目前电信级核心网络中存在的问题和如何帮助电信运营商建立下一代电信级IP网的。
关键词 下一代电信级 IP网 TB级路由器 PAROLI光接口 结构 分散式转发 可服务性
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计算机病毒与安全
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作者 王雄 《遥测遥控》 1991年第1期48-52,共5页
1.计算机安全与恶意程序计算机安全含三要素:(1)保密性(2)完整性(3)可正常服务性。保密性指保证用户的信息不泄露给无权了解该信息的人;完整性指信息内容不能被无权的用户改动;可服务性指防止出现“拒绝服务”
关键词 计算机安全 拒绝服务 信息内容 物理扇区 可服务性 用户区 不可判定性 小球病毒 状态检测 系统管理模块
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检测结果——无线电缆数字联盟报告莱克兰数字测试及其意义
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作者 姚红 《有线电视技术》 1997年第4期11-13,15,共4页
无线电缆数字联盟成立于1994年7月"……为了开路传送几百路视频节目而开发数字技术。"联盟的成员有:American Tele-casting,Adrew Corp.,Califorria Amplifier,Emcee Broadcast Products,Microwave Fil-ter 和 Electronics ... 无线电缆数字联盟成立于1994年7月"……为了开路传送几百路视频节目而开发数字技术。"联盟的成员有:American Tele-casting,Adrew Corp.,Califorria Amplifier,Emcee Broadcast Products,Microwave Fil-ter 和 Electronics 等公司。在1994年到1995年期间,该联合会分别在科罗拉多州的科罗拉多斯普林斯、伊利诺斯州的芝加哥以及佛罗里达州的奥兰多和莱克兰等地进行了试验。本文是报告于1995年6月19~24日这一星期中,在莱克兰进行测试的情况。 展开更多
关键词 数字技术 可服务性 无线电缆 天线杆 数字测试 模拟信号 测试点 联盟 测试结果 科罗拉多
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关键业务的保障
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作者 海文 《中国经济和信息化》 1999年第34期27-27,共1页
提供网络高可用性、保证关键应用是今天UPS的主要任务,如何实现这些目标呢?除优秀的技术根底外,服务与技术支持同样重要,它们是关键业务的保障。
关键词 关键业务 高可用性 电源保护系统 网络可用性 可服务性 技术支持 系统可用性 网络系统 市电 核心任务
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ISP的好工具——CompactPCI
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作者 王俊 《互联网周刊》 1999年第48期44-44,共1页
随着互联网的迅猛发展,互联网服务供应商(ISP)之间的竞争也日益剧烈。ISP急需在成本、可靠性、可扩展性及可服务性等重要系统指标上寻找一个平衡点。在各种硬件和软件的选择中,可达到最佳平衡的方案是在Unix操作软件及应用系统上运行的... 随着互联网的迅猛发展,互联网服务供应商(ISP)之间的竞争也日益剧烈。ISP急需在成本、可靠性、可扩展性及可服务性等重要系统指标上寻找一个平衡点。在各种硬件和软件的选择中,可达到最佳平衡的方案是在Unix操作软件及应用系统上运行的群集CompactPCI单板计算机。从硬件的角度看,CompactPCI具有热插拔、面板及背板接入、电信及数据通信网络接口硬件,以及最节省空间的机架安装等重要的特性。从软件的角度,亦即系统可靠性的决定因素看,Unix在电信及交易系统领域的绝对优势地位已无可争议。特别是用于群集的应用系统和多处理器板间的负载平衡,可在硬件或软件发生故障时仍保证系统的高性能和正常运行。而且,在关键任务应用中,与传统的并行冗余容错系统相比,群集系统能以更合理的价格提供更高的可用性。 展开更多
关键词 互联网 应用系统 群集系统 可扩展性 软件 可服务性 多处理器 系统可靠性 容错系统 接口硬件
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自治区人民政府办公厅转发关于推进新一代数据中心建设发展意见的通知
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《宁夏回族自治区人民政府公报》 2013年第8期35-37,共3页
宁政办发[2013]46号各市、县(区)人民政府,自治区政府各部门、直属机构:宁夏通信管理局制定的《关于推进新一代数据中心建设发展的意见》已经自治区人民政府同意,现转发给你们,请认真贯彻执行。2013年4月2日关于推进新一代数据中心建设... 宁政办发[2013]46号各市、县(区)人民政府,自治区政府各部门、直属机构:宁夏通信管理局制定的《关于推进新一代数据中心建设发展的意见》已经自治区人民政府同意,现转发给你们,请认真贯彻执行。2013年4月2日关于推进新一代数据中心建设发展的意见为贯彻落实《工业和信息化部发展改革委国土资源部电监会能源局关于数据中心建设布局的指导意见》(工信部联通[2013]13号)精神,有效推进我区新一代数据中心建设发展,现提出如下意见。一、指导思想以政府推动协调为先导,以"科学发展、服务市场、节约资源、保障安全"为原则。 展开更多
关键词 新一代数据 发展意见 数据中心 互联网站 综合保税区 可服务性 建设用地 用地保障 土地管理部门
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新版UNIX浮出水面
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作者 雅君 《中国经济和信息化》 1999年第42期35-35,共1页
近日,IBM公司推出了新版的UNIX操作系统——AIX4.3.3。与上一个版本相比,AIX4.3.3具有更高的可扩充性、可管理性、可服务性、安全性及互操作性,为用户实施电子商务提供了更坚实的基础。 AIX 4.3.3可以扩充到具有64GB存储器的24路SMP系统... 近日,IBM公司推出了新版的UNIX操作系统——AIX4.3.3。与上一个版本相比,AIX4.3.3具有更高的可扩充性、可管理性、可服务性、安全性及互操作性,为用户实施电子商务提供了更坚实的基础。 AIX 4.3.3可以扩充到具有64GB存储器的24路SMP系统上,并提供高速缓存结合性。它对EtherChannel、服务质量及IP安全性的支持将提高其技术性能和可扩充性。这样,用户在建立自身网络应用时,就可将以AIX 4.3.3为核心的IBM HTTP GetEngine与IBM HTTP服务器配合使用。新的工作量管理功能可使AIX 4.3.3更好地把资源传送给不同的工作负荷,其它改进则表现在日志文件系统(JFS)备份、并行RAID反射与数据条生成(RAID 0+1)能力方面。此外,AIX 4.3.3还新增了NIS+。 展开更多
关键词 浮出水面 新版 UNIX操作系统 日志文件系统 可服务性 可扩充性 应用软件 结合性 可管理性 工作负荷
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The Cloud Storage Ciphertext Retrieval Scheme Based on ORAM 被引量:1
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作者 SONG Ningning SUN Yan 《China Communications》 SCIE CSCD 2014年第A02期156-165,共10页
Due to its characteristics distribution and virtualization, cloud storage also brings new security problems. User's data is stored in the cloud, which separated the ownership from management. How to ensure the securi... Due to its characteristics distribution and virtualization, cloud storage also brings new security problems. User's data is stored in the cloud, which separated the ownership from management. How to ensure the security of cloud data, how to increase data availability and how to improve user privacy perception are the key issues of cloud storage research, especially when the cloud service provider is not completely trusted. In this paper, a cloud storage ciphertext retrieval scheme based on AES and homomorphic encryption is presented. This ciphertext retrieval scheme will not only conceal the user retrieval information, but also prevent the cloud from obtaining user access pattern such as read-write mode, and access frequency, thereby ensuring the safety of the ciphertext retrieval and user privacy. The results of simulation analysis show that the performance of this ciphertext retrieval scheme requires less overhead than other schemes on the same security level. 展开更多
关键词 cloud storage ciphertext retrieval scheme ORAM index map
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A Case Study on Sustainability Analysis of Fisheries in Pangandaran, West Java Province
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作者 Atikah Nurhayati Agus Heri Purnomo 《Journal of Agricultural Science and Technology(B)》 2014年第4期321-330,共10页
This research was to assess the sustainability of fisheries in Pangandaran, West Java. This fishery is an important one in the region, but is threatened by increasing over-exploitation which has led to a steady decrea... This research was to assess the sustainability of fisheries in Pangandaran, West Java. This fishery is an important one in the region, but is threatened by increasing over-exploitation which has led to a steady decrease in the production. In addition to over-exploitation problem, a record of tsunami disaster makes this fishery a unique case. This research, based on a set of primary and secondary data was carried out using the Rapfish analytical approach. Primary data were collected using a stratified cluster random sampling technique, where as many as 186 outboard fishing operators were selected. Meanwhile, relevant complementary data were solicited purposively from five employees of Pangandaran Marine and Fisheries Service. Following from the Rapfish approach, it was found through this research that sustainability levels of fisheries in Pangandaran fall into poor category. For all types of fisheries that exist in the region, almost all sustainability dimensions namely ecological, social, technological and ethical dimensions were scored below 50 of the 100 maximum values. This paper concludes with a suggestion, pointing out attributes that should receive government attention in order that the sustainability of the fisheries in the future. 展开更多
关键词 SUSTAINABILITY Rapfish fisheries.
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Hash Tree Based Trustworthiness Verification Mechanism in Virtual Environment
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作者 ZHU Shuaishuai HAN Yiliang +1 位作者 YANG Xiaoyuan WEI Yuechuan 《China Communications》 SCIE CSCD 2016年第3期184-192,共9页
The trustworthiness of virtual machines is a big security issue in cloud computing. In this paper, we aimed at designing a practical trustworthiness mechanism in virtual environment. With the assist of a third certifi... The trustworthiness of virtual machines is a big security issue in cloud computing. In this paper, we aimed at designing a practical trustworthiness mechanism in virtual environment. With the assist of a third certificate agent, the cloud user generates a trust base and extends it to its VMs. For each service running on the VM, a hash value is generated from all the necessary modules, and these hash values are organized and maintained with a specially designed hash tree whose root is extended from the user's trust base. Before the VM loads a service, the hash tree is verified from the coordinated hash value to check the trustworthiness of the service. 展开更多
关键词 trustworthiness verification virtual environment hash tree virtual machine
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Intelligent Server Management Framework over Extensible Messaging and Presence Protocol
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作者 斯佩峰 宋川 周翔 《China Communications》 SCIE CSCD 2013年第5期128-136,共9页
With the increasing importance of cloud services worldwide, the cloud infrastructure and platform management has become critical for cloud service providers. In this paper, a novel architecture of intelligent server m... With the increasing importance of cloud services worldwide, the cloud infrastructure and platform management has become critical for cloud service providers. In this paper, a novel architecture of intelligent server management framework is proposed. In this framework, the communication layer is based on the Extensible Messaging and Presence Protocol (XMPP), which was developed for instant messaging and has been proven to be highly mature and suitable for mobile and large scalable deployment due to its extensibility and efficiency. The proposed architecture can simplify server management and increase flexibility and scalability when managing hundreds of thousands of servers in the cloud era. 展开更多
关键词 cloud computing server management XMPP federation mobile push intelligent
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Collegiate athletes'mental health services utilization:A systematic review of conceptualizations,operationalizations,facilitators,and barriers
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作者 Jennifer J.Moreland Kathryn A.Coxe Jingzhen Yang 《Journal of Sport and Health Science》 SCIE 2018年第1期58-69,共12页
Background: While mental health among collegiate athletes is receiving increased attention, research on factors surrounding collegiate athletes' decision to seek mental health services is limited. The goal of the ... Background: While mental health among collegiate athletes is receiving increased attention, research on factors surrounding collegiate athletes' decision to seek mental health services is limited. The goal of the present review was to analyze and synthesize the current literature concerning collegiate athletes' utilization of mental health services, including the facilitators of and barriers to use of these services.Methods: The analysis was guided and organized using a socio-ecological framework, which considered the unique context in which collegiate athletes study and perform. A total of 21 articles, published between 2005 and 2016, which concern U.S. collegiate athletes' mental health services utilization(MHSU) were selected and included for the final analysis. Conceptualizations and operationalizations of MHSU were compared and contrasted. Facilitators of and barriers to athletes MHSU were examined and summarized while appropriately considering the proximity of each factor(facilitator or barrier) to the athletes.Results: Results showed variations in conceptualizations and operationalizations of MHSU in the articles analyzed, which made interpretation and cross comparison difficult. Collegiate athletes are willing to utilize mental health services, but gender, perceived stigma, peer norms—for athletes and coaches—plus service availability impact their MHSU.Conclusion: Key stakeholders, administrators, and public health officials should partner to eliminate MHSU barriers, support facilitators, and generally empower collegiate athletes to actively manage their mental health. 展开更多
关键词 College athlete Mental health Mental health services NCAA PSYCHOLOGY Sport psychology Systematic review
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Access to Reproductive Health Services for Adolescents in the Educational System, Phetchaburi Province
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作者 Rapeepan Narkbubpha Angsinee Kansukcharearn Chanuttaporn Somjai Pailin Thungthin 《Sociology Study》 2014年第11期974-982,共9页
This study was based on a descriptive research design. The population comprised of males and females aged between 15 and 19 years studying at the high school, college, and university levels in Phetchaburi, Thailand. T... This study was based on a descriptive research design. The population comprised of males and females aged between 15 and 19 years studying at the high school, college, and university levels in Phetchaburi, Thailand. The sample group size was calculated by using Taro Yamane's formula at a reliability level of .95. The instrument used was the questionnaire of College of Public Health as modified by Chulalongkorn University for use in research. Instrument quality was calculated by using the Kuder-Richardson 20 formula; an internal consistency value of.86 was obtained. According to the findings, the comparison of access to reproductive health services by adolescents at each level of education, the educational levels of the adolescents were similar to one another in that they were found to have received instruction about sexuality and reproductive health. The instruction most frequently received was on reproductive health and the least frequent subject was life skills, ability to adjust to daily lifestyles. The findings suggested that the capacity of medical and academic personnel should be developed in order to gain knowledge, attitudes to provide reproductive health services, especially on subjects concerning life skills and ability to adjust to daily life and interacting with the people surrounding adolescents, including skills on how to refuse sexual activity with partners. 展开更多
关键词 ACCESSIBILITY adolescents in educational facilities reproduction health services for adolescents
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Network Reliability Analysis of Digital Instrument and Control System with GO-FLOW Methodology
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作者 FANG Tao LU Daogang WAKABAYASHI Toshio 《Transactions of Tianjin University》 EI CAS 2012年第1期73-78,共6页
In this paper,the network reliability of an actual digital instrument and control system (DICS) network is analyzed by using GO-FLOW methodology (GFM).The evaluations of common-cause failure (CCF) and uncertainty are ... In this paper,the network reliability of an actual digital instrument and control system (DICS) network is analyzed by using GO-FLOW methodology (GFM).The evaluations of common-cause failure (CCF) and uncertainty are incorporated.Three significant CCF groups (real time servers,gateways,reactor protection system) and three typical time intervals (10 min,1 h,and 24 h) are selected in the analysis.It is concluded that the network contribution of CCF accounts for over 68% of the system failure probability.The result indicates that GFM is suitable for the network reliability analysis. 展开更多
关键词 GO-FLOW methodology common-cause failure NETWORK digital instrument and control system
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