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Rapid Ageing (rapid + ageing)

Distribution by Scientific Domains
Humanities and Social Sciences50%

Selected Abstracts

Impact of deposit ageing on thermal fouling: Lumped parameter model

AICHE JOURNAL, Issue 2 2010
Edward.
Abstract The thermal and hydraulic performance of heat exchangers can be seriously impaired by the formation of fouling deposits on the heat transfer surfaces. The thermal effect of fouling can be complicated when the deposit is subject to ageing, represented here as a change in deposit thermal conductivity (but not thickness) over time. In this article, we revisit the ageing concept for crude oil fouling proposed by Nelson (Refiner Nat Gas Manufacturer. 1934;13:271,276, 292,298), using a numerical model incorporating first order kinetics to generate quantitative comparisons of different ageing rates. Results are reported for lumped parameter systems (which also simulate point measurement methods commonly used in laboratory testing) that demonstrate that ageing can have a substantial influence on the rate of heat transfer and hence on the surface temperature and rate of fouling. Rapid ageing (compared with the rate of deposition) does not pose problems, but slow ageing, or the use of constant heat fluxes in experiments, can lead to modified thermal fouling behavior. It is concluded that deposit ageing dynamics should be considered alongside deposition rate dynamics when interpreting experimental fouling data and when modeling fouling behavior in support of heat exchanger design or operation. © 2009 American Institute of Chemical Engineers AIChE J, 2010 [source]

Social Changes and Welfare Reform in South Korea: In the Context of the Late-coming Welfare State

INTERNATIONAL JOURNAL OF JAPANESE SOCIOLOGY, Issue 1 2009
Sung-won Kim
Abstract The Korean welfare state is facing diverse pressures and challenges due to changing economic, social, and demographic circumstances: prevalence of the service economy, labor market flexibility, weakened family function and increase of untraditional families, lowest fertility rate and the most rapid ageing of the population among OECD countries, and so forth. These challenges, which indicate new types of social risks, have been stimulating a series of discussions on welfare reform in Korea. The old social risks such as retirement, ill health, poverty, and unemployment have not disappeared because of insecure or inadequate welfare, and now these risks are even intertwined with the so-called new social risks. Thereby the Korean welfare state is facing complicated reform tasks. This study attempts to analyze the structure and context of these challenges in Korea, and to explore the various driving forces that have formulated Korean welfare reform in recent decades. Through the above analyses, this study will shed light the characteristics of welfare reform in Korea as a late-coming welfare state. [source]

Understanding consumption within a care home: an interpretation of George's experiences of life and death

JOURNAL OF CONSUMER BEHAVIOUR, Issue 4 2009
Tim Stone
We are witnessing perhaps the most important shift in the history of mankind , the rapid ageing of the earth's population. This trend raises such issues as elderly care giving and living arrangements in old age. By virtue, the author suggests that managing service provision for elderly consumers within care homes is going to become an increasingly important issue as more consumers live longer and require care. Moreover, given the paucity of literature related to elderly consumers' understandings of such institutions this research aims to illuminate and distil this issue. Based on interpretive methods the author reveals that elderly consumers such as George actively consume life and death related experiences in order to create a meaningful existence within the context of a care home. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Learning from Japanese Experience in Aged Care Policy

ASIAN SOCIAL WORK AND POLICY REVIEW, Issue 1 2007
Guat Tin Ng
Like Singapore, Japan is projected to age rapidly. Japan is the first country in the world where more than 20% of the total population is over 65. Even as Japan adapts from western Europe and America where population ageing is more advanced up till now, it has been pioneering its own aged care policy, given the differences in sociocultural and political contexts. Of particular interest is its introduction of long-term care insurance and its effectiveness in meeting the needs of the long-term care of the aged and their family caregivers. In this article I seek to compare and contrast Singapore and Japan in terms of their demographic changes leading to rapid ageing, and their respective policy and program responses to a rapidly ageing population, drawing lessons from the Japanese experience. [source]