信息生命周期管理在数字图书馆中的应用

信息生命周期管理是近两年倍受关注的热门课题,在我国尚处于萌芽阶段。文章在简单介绍信息生命周期管理(ILM)概念的基础上,针对数字图书馆及网络存储中信息数据过量以及信息时效等管理问题,提出一种信息生命周期管理模式。     

The Adult Life Cycle of Poor African American Fathers

Abstract

This article is based on the qualitative findings of a 4-year study of 150 adult African American men who are non-custodial fathers. Using social constructionist and ecological frameworks, issues of individual, personality and family development are explored and implications for micro and macro social work practice are discussed.     

科技企业各生命周期阶段人才需求分析

以企业生命周期理论为基础,结合企业各个阶段的技术特征、市场特征、管理特征及风险性质, 科技型企业的生命周期可划分为种子期、初创期、成熟期、衰退期和死亡期。本文从科技创业者在科技型中小 企业不同生命周期阶段的作用和角色变化出发,分析和阐述了科技型中小企业在不同生命周期阶段人才需 求的特征。     

The importance of selected housing features at various stages of the life cycle

The spatial environment of the home is an important factor in the consideration of satisfactory housing for families. With the increasing demand for housing, it has become common to simply provide the basic structure without addressing the various wants and needs of individuals and families. It is the purpose of the study reported here to evaluate the importance of specific housing features based on stage in the family lifecycle. Results show that those features with the highest importance involve low maintenance, aesthetics, and environmental quality. Implications for home designers, educators, and consumers are discussed.Kathleen Ann Lodl is an Instructor in the Department of Consumer Science and Education, 128 Home Economics, University of Nebraska-Lincoln, Lincoln, NE 68583-0801. Her research interests include housing design, residential alterations, and female-headed households. She is currently working on a Ph.D. from the University of Nebraska.Betsy S. Gabb is an Assistant Professor in the Department of Textiles, Clothing and Design, 226 Home Economics, University of Nebraska-Lincoln, NE 68583-0802. Her research interests include housing design and residential space use. She received her Ed.D. from the University of Nebraska.E. Raedene Combs is a Professor in the Department of Consumer Science and Education, 134 Home Economics, University of Nebraska-Lincoln, Lincoln, NE 68583-0801. Her research interests include housing designs for special populations and families at risk. She received her Ph.D. from Purdue University.     

家庭子女养老与个人养老“互补替代”效应：理论与实证

依据生命周期均衡收入分配原理,构建家庭子女养老和个人养老收入分配适度水平及其"互补替代"数理模型,从理论和实证角度研究家庭子女养老和个人养老经济结构优化。研究发现:(1)家庭子女养老和个人养老收入分配存在"替代"关系,而在退休年龄延长的条件下,二者存在"互补"关系;(2)家庭子女养老和个人养老替代的均衡点是家庭有2个子女,随着子女数量的增加,家庭子女养老与个人养老边际替代率递减;(3)伴随老年人寿命的延长,家庭子女养老收入再分配系数下降,个人养老收入分配系数上升且上升幅度大于前者下降幅度;(4)家庭子女养老与个人养老之间的"互补替代"效应呈现为"倒V形"曲线,且其替代的均衡点与总和生育率2.1的更替水平存在契合效应。