期刊文献+
共找到10篇文章
< 1 >
每页显示 20 50 100
Pay-as-you-go模式的教育云服务描述与发现
1
作者 程茂华 李政奇 +1 位作者 黎珍利 潘颖 《计算机应用研究》 CSCD 北大核心 2018年第4期1150-1153,共4页
基于pay-before-you-go模式的教育云服务描述与发现方法难以及时处理异构、动态的教育云服务信息,为了解决上述问题,提出基于pay-as-you-go模式的教育云服务描述与发现方法。首先采用数据空间渐进式模型描述服务信息,然后探讨服务发现... 基于pay-before-you-go模式的教育云服务描述与发现方法难以及时处理异构、动态的教育云服务信息,为了解决上述问题,提出基于pay-as-you-go模式的教育云服务描述与发现方法。首先采用数据空间渐进式模型描述服务信息,然后探讨服务发现中的延迟计算方法,最后通过添加语义扩展查询规模。实验结果表明,该方法是可行和有效的,并且提高了查询结果的查全率与查准率。 展开更多
关键词 pay-as-you-go 数据空间 教育云服务 服务发现 异构数据
下载PDF
基于多路分块的Pay-as-you-go实体识别方法 被引量:1
2
作者 孙琛琛 申德荣 +2 位作者 寇月 聂铁铮 于戈 《计算机学报》 EI CSCD 北大核心 2019年第8期1704-1720,共17页
实体识别是数据集成和数据清洗的一个重要方面.针对Pay-as-you-go数据管理需求,本文提出一个基于多路分块的Pay-as-you-go实体识别方法.该方法不要求提供最优的分块或排序的键,并且可以直接找出脏数据集中冗余度最大的区域.分为两个阶段... 实体识别是数据集成和数据清洗的一个重要方面.针对Pay-as-you-go数据管理需求,本文提出一个基于多路分块的Pay-as-you-go实体识别方法.该方法不要求提供最优的分块或排序的键,并且可以直接找出脏数据集中冗余度最大的区域.分为两个阶段,初始化阶段和迭代阶段.在初始化阶段,初步地生成候选数据对象对,并按匹配可能性排序后加入到候选队列.在迭代阶段,每次选择候选队列队首的候选对(即最可能匹配的)来处理,并且根据实时的实体识别结果,动态地更新候选对的匹配可能性,调整候选队列.这样减少了无用的数据对象比较,使得实时的识别结果最优化.通过在真实数据集和合成数据集上的实验对比,说明本文提出的基于多路分块的Pay-as-you-go实体识别方法显著地优于已有工作中提出的方法. 展开更多
关键词 实体识别 pay-as-you-go 多路分块 候选对选择 数据集成 数据清洗
下载PDF
The Pay-as-You-Go System of Pension Insurance
3
作者 Bogomil Manov 《Journal of Modern Accounting and Auditing》 2013年第3期427-432,共6页
The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that g... The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that guarantees its stability. Private pension insurance provides personal retirement accounts and proper ownership of the accumulated funds, but its sustainability during prolonged market crises and inadequate risk sharing are often questioned. In order to address this issue, this paper makes both an assessment and analysis of the arguments put forward in favor of the preservation of the pay-as-you-go system and a comparison of this system with some of the main characteristics of the private accounts system. This is the basis for seeking the objectively defined role of the pay-as-you-go system in the conditions of the market economy. A couple of conclusions that have been formulated might be of interest for the future improvement of the organization and management of pension insurance. 展开更多
关键词 pay-as-you-go system pension insurance public insurance systems private insurance private accounts funded system
下载PDF
一种支持更新操作的数据空间访问控制方法 被引量:10
4
作者 潘颖 元昌安 +1 位作者 李文敬 程茂华 《电子与信息学报》 EI CSCD 北大核心 2016年第8期1935-1941,共7页
数据空间是一种新型的数据管理方式,能够以"pay-as-you-go"模式管理海量、动态、异构的数据。然而,由于数据空间环境下数据的动态演化、数据描述的细粒度和极松散性等原因,难于构建有效的访问控制机制。该文提出一个针对数据... 数据空间是一种新型的数据管理方式,能够以"pay-as-you-go"模式管理海量、动态、异构的数据。然而,由于数据空间环境下数据的动态演化、数据描述的细粒度和极松散性等原因,难于构建有效的访问控制机制。该文提出一个针对数据空间环境下极松散结构模型,重点支持更新操作的细粒度和动态的访问控制框架。首先定义更新操作集用于数据空间的数据更新,提出支持更新操作的映射方法,可将动态数据映射到关系数据库中;给出支持更新操作权限的数据空间访问控制规则的定义,并分析与关系数据库的访问控制规则二者转换的一致性;然后提出具有可靠性和完备性的访问请求动态重写算法,该算法根据用户的读/写访问请求检索相关访问控制规则,使用相关权限信息重写访问请求,从而实现支持动态更新的细粒度数据空间访问控制。理论和实验证明该框架是可行和有效的。 展开更多
关键词 访问控制 数据空间 pay-as-you-go 极松散结构
下载PDF
基于Pay-you-as-go的数据集成框架
5
作者 程茂华 《信息与电脑》 2017年第3期159-160,共2页
随着现代化技术的快速发展,数以百计的电脑及移动设备产生大量的数据。数据源的爆炸性增长给现实生活带来了严重的问题,其中,数据集成是一个关键问题。然而现成的数据集成系统需要花费大量的时间去创建,它不能给用户提供很好的查询服务... 随着现代化技术的快速发展,数以百计的电脑及移动设备产生大量的数据。数据源的爆炸性增长给现实生活带来了严重的问题,其中,数据集成是一个关键问题。然而现成的数据集成系统需要花费大量的时间去创建,它不能给用户提供很好的查询服务。基于此,提出一个基于边建边用的新数据集成系统。 展开更多
关键词 pay-as-you-go 数据源 数据集成
下载PDF
POSTPONING RETIREMENT AND ECONOMIC GROWTH
6
作者 ShangShengwu JianMing +1 位作者 LiuChunhui DuJuan 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2003年第3期303-310,共8页
This paper investigates the effects of postponing retirement on economic growth in an aging society by using the infinite overlapping generations model constructed by Blanchard (1985) in a simple endogenous growth fra... This paper investigates the effects of postponing retirement on economic growth in an aging society by using the infinite overlapping generations model constructed by Blanchard (1985) in a simple endogenous growth framework.It shows that postponing retirement may decelerate economic growth. 展开更多
关键词 AGING postponing retirement pay-as-you-go pension scheme endogenous growth
下载PDF
An Analysis of the Causes and Countermeasures of China's Pension "Empty Account"
7
作者 YAO Yiran 《International English Education Research》 2018年第2期68-70,共3页
This paper analyzes and explains the causes of the "empty account" of our country's basic pension personal account based on the specific economic conditions and social backgrounds of each period in China. Explained... This paper analyzes and explains the causes of the "empty account" of our country's basic pension personal account based on the specific economic conditions and social backgrounds of each period in China. Explained that the "empty account" phenomenon of pension insurance is not universally believed to be caused by "high accumulation and low consumption"economic development policies.The author puts forward two ideas for "filling up the air" in the individual pension account: 1. Ensure that the basic pension maintains its value.2. Accelerate the construction of individual pension accounts. 展开更多
关键词 old-age insurance open-end accounts pay-as-you-go personal accounts
下载PDF
China’s Urban and Rural Old Age Security System: Challenges and Options 被引量:24
8
作者 Dewen Wang 《China & World Economy》 SCIE 2006年第1期102-116,共15页
This paper reviews the development of the urban and rural old age security system in China, and discusses the challenges in the process of constructing a sustained old age security system. Althoughfunding gaps and emp... This paper reviews the development of the urban and rural old age security system in China, and discusses the challenges in the process of constructing a sustained old age security system. Althoughfunding gaps and empty individual accounts have imposed a heavy burden on the sustainability of China 's urban pension system, there is a relatively high coverage rate of 35.3 percent for urban workers. However, China's pension system provides low coverage ratefor rural farmers. The more rapidly aging population and lower incomes in rural areas pose challenges to the vulnerable rural househoM support system. The separation of the oM age security system between rural and urban areas also puts great pressure as a result of urbanization on farmers who lose their farmland. Therefore, it is urgent for China to speed up the reform o fits old age security system to provide an institutional support for its economic and social transition. 展开更多
关键词 accounts system fully individual contribution pay-as-you-go (PAYG) pension system reform sustainability
原文传递
Rethinking Pension Reform in China 被引量:1
9
作者 ZhigangYuan JinFeng 《China & World Economy》 SCIE 2005年第2期39-53,共15页
In linewith advicefrom internationalfinancial institutions, China introduced a three-pillar pension system in 1997. However, it performs badly, with high contribution levels, the ‘funded’ contributionsbeing used for... In linewith advicefrom internationalfinancial institutions, China introduced a three-pillar pension system in 1997. However, it performs badly, with high contribution levels, the ‘funded’ contributionsbeing used forcurrent expenditures,and delaysinpension payments. The problemsareoften ascribed tothe remaining elements of pay-as-you-go (PAYG) present in thesystem. Thispaper, however, arguesthat the advantagesofa fully-funded system (FF) havebeen exaggerated. The higher relative return of the PAYG system in China justifies a PAYG pension system forChina. It is arguedthat theproblemsoftheChinesepension system are not caused by the use of PAYG butbytheneed to finance transition costs and conditions particularto the pension system in China, notablyincomplete contribution coverage, a low pension age, and a high replacement rate. Itisthesefactors, and therateofgrowth ofoutput, which determine the viabilityof theChinese pension system. 展开更多
关键词 pay-as-you-go pension reform productivity
原文传递
Reform of China’s Pension System
10
作者 王延中 《China & World Economy》 SCIE 2005年第3期44-55,共12页
This paper mainly analyzes development and reform of China’s pension system. It introducesthe evolution of China’s pension system reform and discusses its strengths and problems.The paper then proposes some suggesti... This paper mainly analyzes development and reform of China’s pension system. It introducesthe evolution of China’s pension system reform and discusses its strengths and problems.The paper then proposes some suggestions on the direction of China’s pension reform. Thelast section is devoted to a discussion of China’s corporate occupational pension, which isa fast-developing area of the pension system. 展开更多
关键词 China’s pension system pay-as-you-go system occupational pension
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部