• Korea journal of population studies
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• 제5권1호
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• pp.17-53
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• 1982

Focusing on the strength of son preference obtained from two surveys of the same area, an attempt has been made to measure the change on the IS value scale that many have occurred over the last seven-year period, the underlying assumption here being that the strength of son preference wanes in inverse proportion to the level of society's socio-economic development. Various methodological approaches have been put to test to weigh the importance of the sex preference as a dependent variable, as an independent variable, and as an intermediate variable. A few methodological issues are suggested.

• Korean Journal of Bronchoesophagology
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• 제10권1호
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• pp.46-50
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• 2004

The majority of esophageal Foreign body ingestions occur in the pediatric population. In adults, true foreign object ingestion occurs more commonly among those with psychiatric disorders, mental impairment. The management of esophageal foreign bodies is influenced by the age, clinical condition of ingested material, anatomic location and technical abilities of the endoscopist. Recently the therapeutic endoscopy is becoming wider and more rational in application. We evaluated the role of endoscopy for removal of esophageal foreign bodies during the period of 4 years from January 2000 to December 2003 at the Department of Otolaryngology and Gastroenterology, Seonam University Hospital. The results were as follow, 1) The age ranged from 21 to 74 years old (mean 50.5), most frequent age group was between 61-70 years old and male to female ratio was 1:1.4. 2) Fish bone was the most frequent foreign body in the esophagus ($47.1\%$), food material ($23.5\%$) and meats ($17.6\%$) were next frequent foreign bodies. The most frequent site of lodgement was the first ($78.4\%$), second ($17.6\%$) and third narrowing ($3.9\%$) in order. 3) The most common symptom was foreign body sensation (28.6%). the next common symptoms were chest discomfort($23.8\%$) and dysphagia($19\%$). 4) In duration of lodgement, 49cases ($96.1\%$) were lodged for less than one day. 5) The foreign bodies of esophagus were removed successfully by flexible endoscope with basket, snare, forceps, overtube and endoscopic variceal ligation cap. There were only 3 cases of minimal complications, esophageal mucosal tearing. In conclusion, endoscopic esophageal foreign body removal is useful and safe with minimal or no complications.

• Journal of Korea Entertainment Industry Association
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• 제13권8호
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• pp.495-504
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• 2019

Since the 2000s, the number of foreign students in Korea has increased considerably. In late 2010, the government's strategy to internationalize higher education will bring the number of foreign students to 140,000 as of 2019 and soon to 200,000 by 2023. As the number of foreign students increases, the happy life of foreign students in Korea has become a very important social issue at a time when the population is shrinking. Increasing the satisfaction level of foreign students living in Korea is a matter that should not be overlooked given that our society will face problems of globalization and population cliff in the future. Recently, the number of Vietnamese students studying in Korea has been on the rise, raising the need to pay attention to their happy study lives. In this study, I would like to suggest a plan for the happy life of Vietnamese students in Korea. To that end, 90 Vietnamese students in Korea were surveyed on their satisfaction with living, economy, welfare environment, university education, language education and overall studying abroad. Foreign students entering Korean society should also work together in terms of living, economy, welfare and education so that they can recognize themselves as a member of our society and live happily abroad.

• Journal of Korean Library and Information Science Society
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• 제44권1호
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• pp.49-71
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• 2013

Public Libraries should be open at times when the community can make the most effective and convenient use of library collections and services. In other words, public library must provide adequate open hours for local residents. In this respect, this study analyzed the minimum opening hours per week in public library standards of international organizations(IFLA/UNESCO) and major countries (USA, Canada, UK, France, Australia, China, Taiwan, Japan, Korea) and suggested a desirable minimum standards(under 10,000 population-45 hours ; over 10,000~20,000 population-50 hours ; over 20,000~50,000 population-55 hours ; over 50,000~100,000 population-60 hours ; over 100,000~300,000 population-65 hours ; over 300,000 population-70 hours) for opening hours per week of public library based on population size in Korea.

• Proceedings of the KSR Conference
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.451-456
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• 2004

The KTX has been launched one month ago and people can travel much faster and further. There are two opinions which are the dispersion and the concentration of metropolitan population. These contrary opinions were disputed against each other before launching KTX. The phenomena of metropolitan population concentration socially made many problems as it was already pointed out on many papers. So accurate prediction is very important. Thus, this study will predict how KTX will affect the dispersion of metropolitan population focused on highly populated Seoul-Pusan Railway. It will achieved by comparing and analysing foreign cases.

• Journal of the Society of Disaster Information
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• 제18권4호
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• pp.795-805
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• 2022

Purpose: The purpose of this paper is to examine the recently rising number of foreign drug offenders in Korea and suggest improvement measures for the Korean drug policy. Method: This paper analyzed the preceding research, statistical data, etc., on related fields and referred to overseas cases to suggest improvement measures. Result: The foreign population living in Korea increased in 2000s, and the foreign drug offender cases are increasing accordingly. The survey on foreign drug offenses showed that the case of foreign drug offender is higher than the case of Korean drug offenders by 1.2 to 3.3 times. In 2021, the foreign drug offender cases increased by 6.5 times compared to 2012. Especially, the number of psychoactive drug-related drug offenses increased dramatically. The drug smuggling also remarkably increased starting from 2016 as some people earned a lot of money from smuggling the drugs Conclusion: To cope with the foreign drug offenders effectively, this paper suggested intensive monitoring of the foreign drug offenders and weighting on the drug offenders depending on their home country to intensify the entry standards on foreigners who are likely to smuggle drugs.

• Journal of the Korea Society of Computer and Information
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• 제13권4호
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• pp.231-240
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• 2008

In respect complication, group and period, the foreign direct investment of korea is composed of various factors. This paper studies focus on estimating the determinants of foreign direct investment of korea. The region of analysis consist of 7 groups, that is, Asia, Europe, Central and South America, Oceania, Africa, Middle East. Analyzing period be formed over a 67 point(2002. 6${\sim}$2007. 12). In this paper dependent variable setting up an amount of foreign direct investment, explanatory(independent) variables composed of gross domestic product, a balance of current accounts, the foreign exchange rate, employment to population ratio, an average of the rate of operation(the manufacturing industry), consumer price index, the amount of export, wages(a service industry). For an actual proof analysis, LIMDEP 8.0 software, analysis model is random effect in TWECR The result of estimating the determinants of foreign direct investment of korea provides empirical evidences of significance positive relationships between employment to population ratio and wages(a service industry). However this study provides empirical evidences of significance negative relationships between the foreign exchange rate, censurer price index and the amount of export. The explanatory variables, that is, an average of the rate of operation(the manufacturing industry), gross domestic product and a balance of current accounts, are non-significance variables.

• Journal of Korea Foundry Society
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• 제38권2호
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• pp.27-31
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• 2018

The lack of industrial manpower that Korean companies have been suffering in 21st century is largely responsible for the low-fertility phenomenon. This research suggests an alternative solution with a program for fostering foreign laborers with technical skills in casting industry. Industrial manpower growth is feasible through accepting migrants who have had official education on the fundamental industrial technologies provided by Korean government. These technically trained migrants who can keep economical self-perpetuating ability are can help to effectively address the problem of the declining working-age population and the decreasing potential growth rate in Korea.

• Korea journal of population studies
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• 제29권1호
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• pp.241-268
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• 2006

This study aim to examine the optimum population in Korea, which has the lowest fertility rate in the world. This study has significance because this rapid decline in the fertility rate is expected to bring the decrease of the population and unbalance in the population composition in Korea. From the social welfare perspective, the optimum population is guided by maximization of the social welfare level per person or the social welfare level in a society. The optimum population can be defined as follows: The proportion of older adults 65 and over is 15-17%, the proportion of work force is 64-69%, the index of aging is 72-104. Within the current population and population composition, the optimum population is estimated as 4.85-4.95 million. These findings imply that we need to remove causes of low fertility rate and prepare for policies encouraging immigration of labor force from foreign countries. In addition, policies and programs where children can be grown up in good environments and women and older adults can participate in labor force should be established.

• Journal of Biomedical Engineering Research
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• 제14권4호
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• pp.365-370
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• 1993

Of the assumptions commonly used in continuous infection model, the least likely to be even approximately true in large population, is that of homogeneous mixing. In this paper, We investigate a model for the spread of infection amongst a population which is divided into classes, such that the individuals of each class mix homogeneously amongst themselves, but mix to a lesser degree with individuals of other class. The stochastic model in this form is intractable and approximations are made, yielding results in reasonable agreement with simulation trials.