• Journal of Korean Society for Quality Management
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• v.36 no.1
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• pp.31-39
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• 2008

This paper proposes a method of estimating the lifetime distribution at use condition for constant stress accelerated life tests when an infant-mortality failure mode as well as wear-out one exists. General limited failure population model is introduced to describe these failure modes. It is assumed that the log lifetime of each failure mode follows a location-scale distribution and a linear relation exists between the location parameter and the stress. An estimation procedure using the expectation and maximization algorithm is proposed. Specific formulas for Weibull distribution are obtained. An illustrative example and the simulation results are given.

• The Journal of Fisheries Business Administration
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• v.35 no.2
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• pp.139-156
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• 2004

지역별 또는 구역별 어업관리(Area-based management of Fisheries)는 해당 지역 또는 구역에 특수한 생태환경 및 지역관련 정보를 고려할 수 있는 순응적(adaptive) 관리제도로써 이에 대한 연구와 관심이 고조되고 있다. 각 지역 및 구역에 대한 총허용가능어획량(TAC)의 전통적인 할당은 각 지역 및 구역별 양륙양의 역사적 자료에 의존해왔다. 이러한 총허용가능어획량의 할당은 중앙집권적이고 해당 지역에서의 어획에 대한 어떠한 유연성을 제공하지 못하고 있다. 하지만 특정 지역 및 구역을 관리하는 법적 실체(legal entity)인 가상자원단위(Virtual Population Units: VPU)를 이용한 어업관리 하에서는 어획에 대한 유연성과 할당된 자원에 대해 상당한 자율성을 가지고 있다. 본 논문은 가상자원단위가 어떻게 지역 및 구역별 어업관리에 적용될 수 있는지를 보여준다.

• Health Policy and Management
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• v.23 no.4
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• pp.376-386
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• 2013

Purpose: The purpose of study is to estimate the number of chronic disease patients and medical care expenditure at the time baby-boomers belong to 65 years old aging population, and compare with current 65 year-old aging population. Methods: Analysis method used an estimating formula devised by the researcher and estimated the number of chronic disease patients and medical care expenditure of each generation. Results: When comparing the estimated number of chronic diseases patients of each generation, 40.6% of the first generation, 76.4% of the second generation, 95.2% of third generation are expected to get chronic disease. When comparing each generation's total medical care expenditure, based on the estimated number of chronic diseases patients of each generation, the second generation( 1,206,251,224 thousand won) showed higher than other generation. This study compared the number of chronic disease patients and medical care expenditure between the second generation of the elderly and current elder generation. As a result, the second generation patients was higher than the fourth generation in high blood pressure, diabetes, psychological and behavioral disorder, and neurological diseases whereas the fourth generation is only high the number of patients in heart disease. As for total medical care expenditure, the second generation paid more in high blood pressure, psychological and behavioral disorder while the fourth generation in neurological disease and heart disease. Conclusion: It is desired that considering the number of chronic disease patients and medical care expenditure of baby boomers accounting for 14.6% of total population, in-depth follow-up study is carried out that inquires into what are issues with a current chronic disease management project, what business is needed in order to manage these issues, and how to fund to cover increasing medical care expenditure.

• Journal of the Korean housing association
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• v.21 no.4
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• pp.11-22
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• 2010

In the urban area where rapid suburbanization trend continues, the role of mixed use building is controversial. It is argued that the mixed use building is an effective tool to recover residential function of urban core(urban regeneration). It is also argued that the building is a cause of serious urban problems, such as congestion, public service shortages. The fundamental purpose of this study is to examine the role of mixed use building in terms of urban growth management in Seoul. For this purpose, data of mixed use building from 1981 to 2007 are collected and analysed. The results show that most of mixed use buildings are located in either sub-centers or population losing areas, rather than traditional urban core. Therefore, it is hard to accept that the two controversial arguments. The mixed use building noncore areas in most cases. However, it dose help to increase population inflow in non-core areas. it is difficult to accept the public service assertion which states that super-high rise mixed use building causes public service congestion, because the building is built in population losing or demand decreasing area. Based on these findings this study suggests some policy alternatives such as urban service boundary or concurrency program to management urban growth.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.4
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• pp.155-162
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• 2020

The paper aims to examine the association between information and communication technology (ICT), economic growth and population health based on health production model in Malaysia. This theoretical health production function is represented as follows: where the output is an individual health outcome, and the inputs are determinants of health, such as income, education, health care costs, medical facilities, the environment, and lifestyle. The development of information and communication technologies are represented as of mobile cellular subscriptions (per 100) and fixed telephone subscriptions (100) using time series data from 1993-2017 from the World Bank database. Using the bound testing technique of cointegration, this study finds that ICT affects population health significantly and positively in the long- and short-run. This is because ICT inclusion improves human health and longevity. Whereas, economic growth has no significant impact on the population's health both in the short- and long-run. The findings indicate that a weak global economy affects Malaysia's economic growth and reduces the health expenditure per capita. The results of this study suggest that policymakers must develop policies that improves public health by increasing health literacy, disseminating health information and facilitating medical facilities. This study also suggests that health care systems should to concentrate on digital inclusion.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.20
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• pp.8765-8774
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• 2014

This study aimed at summarizing epidemiological research findings on associations between tobacco, alcohol and tea consumption and risk of gastric cancer (GC) in the Chinese population. The review searched PubMed, Embase, China National Knowledge Infrastructure (CNKI) and China Biology Medicine (CBM) databases and reference lists of review papers for all studies published in English or Chinese languages. Information extracted, via two independent researchers, from retrieved articles included first author, year of publication, study design, sample size, source of controls and adjusted odds ratio (OR) or relative risk (RR) with the corresponding 95% confidence intervals (CIs) for each category. Statistical analyses used software STATA version 12.0. The systematic search found 89 articles containing 25,821 GC cases and 135,298 non-cases. The overall random effects in terms of pooled OR and 95%CI for tobacco, alcohol and tea consumption were 1.62 (95%CI: 1.50-1.74), 1.57 (95%CI: 1.41-1.76) and 0.67 (95%CI: 0.59-0.76) respectively; while the heterogeneity among included studies ranged from 80.1% to 87.5%. The majority of subgroup analyses revealed consistent results with the overall analyses. All three behavioral factors showed statistically significant dose-dependent effects on GC (P<0.05). The study revealed that tobacco smoking and alcohol drinking were associated with over 1/2 added risk of GC, while tea drinking conferred about 1/3 lower risk of GC in the Chinese population. However, these results should be interpreted with caution given the fact that most of the included studies were based on a retrospective design and heterogeneity among studies was relatively high.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.162-164
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• 2003

The multi-disciplinary research project Strengthening Local Authorities in Risk Management (SLARIM), initiated by ITC, includes three case study cities in Asia. An important question is: what are the essential data for risk management and how to access such data. The role of common sources (e.g. census data), data derived from remote sensing (high-resolution satellite imagery, aerial photos), and data from close sensing (field observation, including mobile GIS) to acquire essential risk management data will be discussed. Special attention is given to the question of the minimum area and to disaggregating population data. A few examples are given of Kathmandu / Lalitpur, Nepal.

• Korean Journal of Remote Sensing
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• v.38 no.6_3
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• pp.1805-1815
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• 2022

In 2022, wildfires broke out in Uljin-gun and Samcheok-si, which set the record for the longest forest fire in Korea, but there were no casualties. To protect local residents from wildfires, they must evacuate. Predicting the demand for evacuation in the event of wildfires is essential for the efficiency of disaster management. The purpose of this study is to analyze the human mobility patterns according to the occurrence of Uljin-gun and Samcheok-si wildfires. SKT floating population data was used in this study to analyze the human mobility patterns in Uljin-gun and Samcheok-si. The main findings are as follows. First, while the movement of the resident and visiting population decreased, the movement of the worker population was found to be similar to normal. Second, the resident population of Buk-myeon, Uljin-gun moved to the surrounding area to avoid the wildfires. Third, the region is an area judged to be safe from wildfires, and this mobility patterns are related to emergency disaster text messages. This study confirmed human mobility patterns of the population in the area where the wildfires through the floating population data, which is quantitative data. This suggests that it is important to guide residents to shelters through emergency text messages to minimize damage in the event of wildfires.

• Journal of the Korean Statistical Society
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• v.7 no.2
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• pp.131-142
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• 1978

This study aims to find out a suitable mathematical models for the estimation of population size and improve it for the estimation of social increase of population at urban areas. This study shows that Model (I) is obtained by the generalization of Kabak's Wild Life Management Model together with some other useful results as follows: a) By the transition matrix P, it is known that the interregional migrations have shown greater rise than those of five years ago. b) The invariant population vector $\alpha$ predicts that the Kyonggi area will have a share of 48%, the Choongcheong area of 10%, the Honam area of 12%, and the Youngnam area of 17% of the total population of Korea. c) The estimated population of the Special City of Seoul (Metropolitan) will be above ten millon in 1983. d) The estimated optmum population of Korea will be 53,850,000 in 2000 A.D.

• Fisheries and Aquatic Sciences
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• v.25 no.2
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• pp.101-116
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• 2022

The harvesting season of lompa fish, Thryssa baelama, through sasi, indigenous knowledge in resources management, in Haruku Village has become a socio-cultural event that attracts many people. The sasi of lompa fish has been conducted for hundreds of years. Information on the bioecology aspect of lompa fish is limited, while this information is crucial for lompa fish sustainability through the sasi approach. This study aimed to investigate some population parameters of lompa fish, its sustainability status, and proposed a sustainable management strategy for the lompa fishery of Haruku Village. Fish population parameter covers length-weight relationship, growth pattern, size distribution, sex ratio, and the body condition index. The sustainability status was assessed following the Rapfish approach. Fisheries management strategy was performed using a conceptual model framework based on Driver Pressure State Impact Response. The research shows that the total length varies between 9.2-14.3 cm. A high relationship was found between total length and weight, and the growth pattern was an allometric negative. There was a difference in sex ratio between males and females, with females dominant. The body condition index varies over time, probably due to reproductive status. The overall sustainability status was at fair condition (61.60%), with the ecological domain having the highest sustainable status (71.07%) and considered sustain. In comparison, the technological domain had the lowest sustainability status (52.58%) and was considered fair sustain. There were seven management strategies proposed for sustainable management for the lompa fishery.