• Korea journal of population studies
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• v.32 no.1
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• pp.139-164
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• 2009

The first demographic transition refers to the historical decline in mortality and fertility, as shown from the 18th Century in several European populations, and continuing present in most developing countries. The end point of the first demographic transition(FDT) was supposed to be a stationary and stable population corresponding with replacement fertility and zero population growth. In addition, households in all parts of the world would converge toward the nuclear and conjugal types, composed of married couples and their offspring. The second demographic transition(SDT), on the other hand, sees no such equilibrium as the end-point. Rather, new developments bring sub-replacement fertility, a multitude of living arrangements other than marriage, and the disconnection between marriage and procreation. Populations would face declining sizes if not complemented by new migrants. Over the last decades birth rates have been on the decline in all countries of the world, and it is estimated that already more than half of he world's population has below replacement level fertility. Measured in terms of the Total Fertility Rate (TFR), currently 34 countries have fertility levels of 1.5 or less. Similarly, Korea has been below lowest-low fertility for eight consecutive years since 2001 and below the replacement level for more than twenty years. In explaining the low fertility in Korea, some researchers explain the low fertility as revenge against a male-dominated society and institution, while others focus the impact of the employment instability. These studies share the basic ideas (spread of individualism, delayed marriage and childbearing, high divorce rate etc.) of a second demographic transition in order to explain the low fertility in Korea.

• International Area Studies Review
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• v.12 no.2
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• pp.125-145
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• 2008

Japan is now facing an aging society with fewer children. According to the demographic change in Japan, its economic effect on the economic growth has gained public attention. This paper focuses on the effect of the demographic change on economic growth in Japan, too. The first part illustrates the process of demographic transition in Japan. Thanks to successful Meiji Revitalizing Reform, Japan had experienced demographic transition earlier than the other East Asia countries. The second part of this paper describes relations between demographic factors and economic growth theoretically. In addition, it analyzes demographic effects on economic growth empirically using time series data of Japan from 1952 to 2005. It is the main finding of analyses that there are positive relations between demographic factor, including employment population rate, population rate and TFR, and economic growth. Therefore, in the near future, a decreasing labor force will cause economic stagnation in Japan. To overcome this problems, it is required to make various policies.

• Korea journal of population studies
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• v.29 no.2
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• pp.89-113
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• 2006

Over the past four decades reproductive behavior has changed rapidly in much of the developing countries. The average total fertility rate has fallen by half from six or more to near three today. Between 1960 and 2000 the largest fertility decline occurred in Asia and Latin America. The mortality rate has also decreased in most developing countries. The purpose of this study is to review the pattern and characteristic of demographic transition in developing countries. At first, this study focuses on the regional fertility and mortality transition. Africa, the total fertility rate is still high, can be match to the second stage of demographic transition. Similar case is found in Southern West Asia areas. However, the fertility rate has therd stage of demographic transition. The same pattern is found in Latin America. The mortality rate has also decreased in most of developing countries. It is interesting to find that there is a clear difference among developing countries. In terms of crude death rate, Latin American countries show the lowest rate. while African countries remain still high rate. About mortality, African countries show a high level in terms of both crude death rate and infant mortality rate. African countries also show the lowest level of life expectancy in the world. One of the reasons for low level of life expectancy in Africa is the widespread of AIDS in this areas. This study suggests that we should include 'AIDS' in the study of mortality in African countries.

• Korea journal of population studies
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• v.28 no.2
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• pp.183-203
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• 2005

Over the past four decades reproductive behavior has changed rapidly in much of the developing countries. The average total fertility rate has fallen by half from six or more to near three today. Between 1960 and 2000 the largest fertility decline occurred in Asia and Latin America. The mortality rate has decreased in most developing countries. The purpose of this study is to review the pattern of demographic transition in developing countries. At first, this study focuses on the regional fertility transition. In Africa, the total fertility rate has decreased from 6.59 to 4.85 between 1960 and 2000. However, the rate has rapidly fallen from 5.76 to 2.34 in East Asia. The same pattern is found in Latin America. The mortality rate has also decreased in most of developing countries. It is also interesting to find that there is a clear difference among developing countries. In terms of crude death rate, Latin American countries show the lowest rate, while African countries remain still high rate. The study also shows the relationship between socioeconomic indicators and fertility/mortality in developing countries. The result supports the hypothesized relationship between education and fertility. However, the effects of urbanization and income on fertility do not show consistent result. About mortality rate, however, the study shows the significant relationship between urbanization and infant mortality rate, between income and mortality. The study finally emphasizes that we should include 'AIDS' in the study of mortality in African countries.

• Korea journal of population studies
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• v.31 no.1
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• pp.127-146
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• 2008

Over the past four decades reproductive behavior has changed slowly in much of the African countries. The average total fertility rate has fallen from six or more to near five today. Between 1960 and 2000 the largest fertility decline occurred in such Northern African countries as Algeria, Libya, and Morocco. The mortality rate has decreased in most African countries. The purpose of this study is to review the pattern of demographic transition in African countries. At first, this study focuses on the fertility transition. In Africa, the total fertility rate has decreased from 6.59 to 4.85 between 1960 and 2000. The mortality rate has also decreased in most of African countries. It is also interesting to find that there is a clear difference among African countries. In terms of infant mortality rate, Libya shows the lowest rate(17), while Mali and Somalia remain still high rate(142 and 133, respectively). This study tests a path model in which infant mortality rate acts as an intermediate variable between three socioeconomic variables and the fertility rate. The findings of this paper substantiate some of our hypotheses on the interrelationships among socioeconomic variables, infant mortality rate, and fertility rate. The result also shows the indirect effects of socioeconomic variables on fertility rate via infant mortality.

• Journal of the Korean Physical Society
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• v.73 no.11
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• pp.1774-1786
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• 2018

Phenotypic variation among clones (individuals with identical genes, i.e. isogenic individuals) has been recognized both theoretically and experimentally. We investigate the effects of phenotypic variation on evolutionary dynamics of a population. In a population, the individuals are assumed to be haploid with two genotypes : one genotype shows phenotypic variation and the other does not. We use an individual-based Moran model in which the individuals reproduce according to their fitness values and die at random. The evolutionary dynamics of an individual-based model is formulated in terms of a master equation and is approximated as the Fokker-Planck equation (FPE) and the coupled non-linear stochastic differential equations (SDEs) with multiplicative noise. We first analyze the deterministic part of the SDEs to obtain the fixed points and determine the stability of each fixed point. We find that there is a discrete phase transition in the population distribution when the probability of reproducing the fitter individual is equal to the critical value determined by the stability of the fixed points. Next, we take demographic stochasticity into account and analyze the FPE by eliminating the fast variable to reduce the coupled two-variable FPE to the single-variable FPE. We derive a quasi-stationary distribution of the reduced FPE and predict the fixation probabilities and the mean fixation times to absorbing states. We also carry out numerical simulations in the form of the Gillespie algorithm and find that the results of simulations are consistent with the analytic predictions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.7093-7100
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• 2014

This study analyzed the factors related to labor market transition of job injured workers. The Workers' Compensation Insurance Panel data ver.1, which that was surveyed by the Korean Workers' Compensation & Welfare Service in 2013, was used. Four key findings were made: first, the economically inactive populations are 7.2% and unemployed is 22.3% of occupational accident workers who finished the treatment period; second, 31.5% of laborers who returned to a new workplace went into another type of occupation; third, the results showed that socio-demographic factors, such as gender, age and education years, injury-related factors, such as the treatment period and work limitation, and workplace factors, such as company size and employment status, were associated with the return to work; and fourth, a relatively higher proportion of people who has received occupational training could not return to work and the disability grade was not associated with the return to work. These results suggest that policy makers need to understand the characteristics of labor market transition of job injured workers and develop efficient intervention programs based on the transitional labor market.

• 한국노년학
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• v.31 no.1
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• pp.15-31
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• 2011

The purpose of this study is to explore the transition to retirement of the middle-aged in Korea according to the notion of "the career job" and "the bridge job". In order to scrutinize basic elements for the transition, three aspects such as the job history of the middle-aged, the characteristics of the demographic and economic status were investigated through the one to three wave of Korean Retirement and Income Study(KReIS). In addition, the characteristics of the career job and the bridge job were analyzed by both descriptive statistics and the conditional transition probability. Moreover, the influential factors to the job status of the middle-aged were examined by the multi-nominal logistic regression. The results of the study are as followed: first, gradual retirement is increasing in the transition to retirement of the middle-aged in Korea. Over time, the career job is decreasing whilst bridge job is increasing. However, the quality of the bridge job is poorer than the career job in terms of wage, employment status, industry, and occupation. Lastly, the middle-aged who work in the bridge job have vulnerable characteristics, so they work in the bridge job to supplement their economic needs. The results can be influential in the adjustment of the labor policies for the middle-aged in Korea. Moreover, the partial pension system could be a good alternative since the pension system is needed to protect the vulnerable situation of the middle-aged in Korea.

• Korea journal of population studies
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• v.18 no.2
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• pp.51-69
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• 1995

The Swedish welfare state has been the model for others to emulate the archetypical example of state intervention. The state interventions are presented in the form of legal acts. These social welfare acts can be classified according to the demographic transition theory. According to the Bogue's theory, the demographic transition in Sweden took place in four stages : the pre-transitional stage before 1810; the early transitional stage from 1810 to 1860; the mid-transitional stage from 1860 to 1930; the late transitional stage from 1930 to now. As we look into the social welfare acts in Sweden, the relief of the poor was the major concern of the early transitional stage, the care of workers was the major concerns of the mid-transitional stage and the care of the families was the major concerns in the late transitional stage. The Korea's transition period can be devided as follows; the pre-transitional stage before 1960; the early transitional stage from 1960 to 1969; the mid-transitional stage from 1970 to 1987; and the late transitional stage from 1987 to now. In Korea, the major concern of the early transitional stage was the care of the officials and the workers; in the mid-transitional stage the care of the aged and the handicapped were the major concerns. And in the late transitional stage the expanding of the welfare clients was the major concern. If we compare the results of both countries, the relief of the poor, the care of the workers and the care of the families will be the major concerns in Korea, because the social welfare acts in Korea are extended to specific groups and not to the whole population. The acts related to these social issues have been arranged in 120 years in Sweden. But Korea had to do the same work in 27 years. So the burden of making those social acts will be four times heavier. If we want to extend the benefits of the social system to the general population, we need to look at the design and approach of the swedish model. The reason why swedish social acts constitute an international model has more to do with the uniqueness of its design and approach. First of all, it is characteristic by its universalism, secondly by its emphasis on social services and thirdly by its productivitism. Also the swedish welfare state supported by a high-tax system called the earnings-related welfare system. In order to achieve an effective welfare state, we Koreans should pay attention to the relief of the poor, the care of the worker and the families. We should also focus on a good system design and prepare appropriate budgets.

• Korean Journal of Human Ecology
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• v.20 no.2
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• pp.285-298
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• 2011

The purpose of this study was to analyze in detail the employment characteristics of the elderly over 65 years old and to compare those that have experienced no job change in the last 10 years with another group that have experienced job change at least once in the last 10 years. From the 10th wave data(KLIP), participants who were over 65 years old were chosen and their employment status for the last 10 years was reviewed. The results of this study were as follows: first, the analysis of demographic profiles indicated that householders and elderly couples with low education levels and low socioeconomic status were more likely to be employed compared to others. Second, in terms of work-related characteristics, it was revealed that the elderly who were employed tended to be non-paid workers, employers, and self-employed workers, primarily in the farming, fishing, forestry, and the mining industries, these were the elderly workers who had experienced job change three times or more in the last 10 years. Third, the analysis of economic characteristics indicated that elderly who were employed tended to rely more on private income transfers. Last, when the elderly who had experienced no job change in the last 10 years were compared to the elderly who had experienced job change in the last 10 years, the two groups differed significantly in terms of employment status, type of business, and occupation category.