• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
• /
• pp.268-269
• /
• 2017

Apartment building, which has been accompanied by economic growth in Korea, is a home of life and has the value overlapping as housing and assets. The improvement of consumer's eye level and development of related technology and related service development have positive function that enriches society and creates economic wealth. On the other hand, the clash and conflict between stakeholders increase social unrest and waste our competitiveness by economic loss. The term of warranty liability of apartment building is an important issue of defect lawsuits and is only a few quantitative standards. However, in this study, we examined the revision history of the law and ordinances for the reinforced concrete construction. As a result, establishing and revising the relevant standard, there is no definite basis system to support it. To improve this, the efforts to provide the standard for term of warranty liability and quantitative and objective basis to support it should be accompanied continuously.

• 수산해양교육연구
• /
• 제16권1호
• /
• pp.84-98
• /
• 2004

Due to a publicly owned resources, the overexploitation of the fisheries resources can result in externalities in the form of reduced future levels of yield. These problems can be theoretically improved through effective management of the fishery. The paper illustrates maximum sustainable yield(MSY), maximum economic yield(MEY) and F0.1 level of fishing mortality as the concept of optimal yield, and it theoretically shows that MSY is more appropriate for the optimal yield than MEY where prices increase even though MEY achieves the maximization of economic rent in a fishery assuming constant prices. And the paper presents several fisheries management tools and policies such as input controls, output controls and taxes. As the traditional approach to fishery management, input controls involve restrictions on the physical inputs into the production process(e.g. capital, time or technology) and output controls involve limits on the quantity of fish that can be landed. To introduce user cost into the harvest decisions of rent-seeking fishers, taxation, as a bioeconomic management policy of the fisheries, directly addresses the problems associated with the resource being unpriced. As most fisheries management plans, however, have increasing fisher income as an objective, taxes have not been introduced into any fisheries management policies despite their theoretical attraction.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권5호
• /
• pp.583-593
• /
• 2021

The objective of this paper is to investigate the impact of economic growth (per capita real GDP), the square of per capita real GDP, energy use, financial development (FD), and foreign direct investment (FDI) on ecological footprint (EF) in the case of Malaysia over the period 1971-2014, by employing the ARDL approach. The long-run results revealed that economic growth has a significant positive impact on the ecological footprint and it implies that the economic growth deteriorates the environmental quality in Malaysia. Conversely, the square of GDP showed a negative and significant impact on the EF in the long run. As the coefficient of GDP in our study is positive and statistically significant while the coefficient of squared GDP is negatively significant, thus, this study supports the presence of the environmental Kuznets curve (EKC) hypothesis in the case of Malaysia. Furthermore, the result indicates that FDI has a positive and significant impact on the EF in the long run, which means a rise in FDI will enhance the environmental pollution level. Thus, it confirms the pollution haven hypothesis. Hence, it suggests that Malaysia imposes stricter environmental policies. Further, FDI and FD are causing GDP in Malaysia, but through increasing EF.

• 대한건축학회논문집:구조계
• /
• 제35권2호
• /
• pp.37-44
• /
• 2019

The primary objective of this study is to develop a prototype of all-in-one attachment-based PHC pile head cutting robot that improves the conventional work in safety, productivity, and quality. For this, the following research works are conducted sequentially; 1)literature review, 2)development of an all-in-one attachment-based PHC pile head cutting robot prototype, 3)performance evaluation of each device, 4)economic analysis of an automated method. As a result, PHC pile cutting level sensing device, PHC pile cutting device, PHC pile handling device are developed. Futhermore, working process of an automated method is developed based on result of performance evaluation. According to the economic analysis result, the cost of the automated method was 21.37% less than that of the conventional method, and the economic efficiency was also superior(ROR 215.44%, Break-even Point 5.52month). It is expected that conclusions for future improvements are used in the development of the all-in-one attachment-based PHC pile head cutting robot to practical use.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권1호
• /
• pp.13-24
• /
• 2022

The main goal of this study is to look at how South Korea can catch up to the rest of the world through policy-driven structural change and manufacturing revolutions. To achieve the objective, this study used annual data on real exports and real GDP from the World Development Indicator WDI of South Korea for the period 1960 to 2019. The study's goal is to use econometrics to detect this policy-driven structural change trend. Multiple nonlinear Granger causality test was used to accomplish this. The findings revealed structural breaks and nonlinearities in the dynamic link between South Korea's real GDP and real exports. Furthermore, results also show evidence of multiple structural breaks in South Korean data. South Korea's economic catch-up was the result of a constant reevaluation of industrial policies, readjustment, and structural change to constantly explore and utilize comparative advantage, realizing economies of scale at the global level, and reallocating and redistribution of resources towards productive sectors with high value-added output, according to econometric analysis. If South Korea would have not done this structural change this miracle to escape the middle-income trap would not have been possible. These findings support the descriptive evidence of structural change in favor of manufacturing revolutions and value addition industry development in South Korea.

• 지역사회간호학회지
• /
• 제29권4호
• /
• pp.530-538
• /
• 2018

Purpose: This study tried to identify changes in family burden after the introduction of the long-term care insurance and to examine the factors influencing subjective and objective caring burden and depression of family caregivers of elders receiving home-based long-term care. Methods: Data were collected from 203 family caregivers of elders from August 1 to 31, 2015 using questionnaires. They were analyzed in descriptive statistics, t test, ANOVA test, and multiple regression analysis. Results: The mean score of depression was 7.24, which suggested mild depression level. The subjective family burden was 2.71 and the objective burden 3.04. The factors affecting depression included subjective burden (t=5.08, p<.001), objective burden (t=2.80, p=.006), time of elderly care per day (t=-3.61, p< .001), caregiving duration (t=3.33, p=.001), age (t=3.13, p=.002), family relationship (t=2.48, p=.014), and economic status (t=1.99, p=.047). Conclusion: The family burden was most important influencing factor on caregiver's depression. Therefore, services and supports to alleviate caregivers' burden in the home-based care should be added to long-term care.

• 한국국방경영분석학회지
• /
• 제16권2호
• /
• pp.83-95
• /
• 1990

This paper addresses the problem of determining the optimal number of spares for a system consisting of multi-item parts. In commercial sector, the cost minimization is mainly considered as an objective functions in most inventory models. However, in the military inventory systems, it is more stressed on maximizing the system availability than minimizing the system cost because the field commander always wants the system to be in perfect working condition to prepare against an emergence case. In this point of view, this paper develops an inventory model which decides the optimal number of spares by minimizing units short and simultaneously achieving a certain level of system availability. Solution algorithms are derived using the generalized Lagrange multiplier approach and marginal analysis approach. Sample data and output results are provided and sensitivity analysis is performed as the level of system availability changes in order to decide the optimal number of spares and availability in terms of economic sense.

• 대한산업공학회지
• /
• 제18권2호
• /
• pp.23-29
• /
• 1992

To compute the expected travel time of storage and retrieval (S/R) machine in automated warehousing systems most of the previous studies assumed that equal number of rack openings are required regardless of the nature of storage assignment rules. It is known that randomized storage assignment rule usually needs less storage to space than needed for full turnover-based assignment rule. The objective of this paper is compute the expected travel time of each assignment rule more equitably by taking into account the storage space required for each rule. First, the rack storage space is determined which satisfies a given service level. Then based on the standard Economic Ordering Quantity model, trade-off analysis is carried out which relates the storage space to the expected travel time of the S/R machine. Finally, example problems are solved to compare the performance of each assignment rule under varying conditions of demand pattern and service level.

• 수산해양기술연구
• /
• 제56권4호
• /
• pp.299-315
• /
• 2020

Tuna fisheries were applied to an integrated ecosystem-based fishery risk assessment method using indexes of target species status, inhabited species in a target ecosystem, habitat quality and socio-economic benefit of affected fisheries. This study suggested more effective and efficient management measures to break away from traditional management methods, such as limitation of catch and fishing effort. The results presented that the objective risk index (ORI_S) on sustainability of bigeye and yellowfin tunas by purse seine fishery was estimated high due to the high catch ratio of small fishes. The ORIs of biodiversity (ORI_B) and habitat quality (ORI_H) of purse seine fishery were also estimated at a high level from using fish-aggregating devices (FAD). However, due to skipjack tuna's high catches, the ORI of socio-economic benefit (ORI_E) was estimated at a very low level. Due to the high bycatch rate, ORI_B was high, and ORI_S and ORI_H were evaluated at a low level in longline fishery. Due to strengthern of fishing restrictions and increase of fishing costs, the ORI_E was assessed to be very high. The ecosystem risk index (ERI) for two tuna fisheries was assessed low, but the overall FAD management by purse seine fishery is necessary at the ecosystem level.

• 지역연구
• /
• 제35권2호
• /
• pp.19-31
• /
• 2019

본 연구는 사람들이 생활을 영위하는 최소 공간단위라 할 수 있는 읍면동 수준에서 지역의 소득수준이 계층인식의 불일치에 어떠한 영향을 미치는지 분석하고, 소득 분배에 대한 정확한 정보가 주어진다고 가정할 때, 개인의 삶의 만족감은 어떻게 달라질 것인지 분석하였다. 주요 분석 결과는 다음과 같이 요약할 수 있다. 첫째, 지역의 경제적 수준이 높을수록 객관적 소득수준보다 계층인식은 낮아지는 하향불일치 현상이 있는 것으로 나타났다. 둘째, 소득이 높은 지역보다 낮은 지역에서 저소득층의 삶의 만족감이 더 크게 감소하였다. 정책결정자의 입장에서 정책의 대상이 되는 이들의 요구는 중요한 고려사항 중 하나이다. 셋째, 계층인식 불일치 감소에 의한 삶의 만족감 변화는 지역의 소득수준에 따라 그 정도가 다르게 나타났다. 특히, 평균적인 소득수준이 낮은 지역에서 삶의 만족감 변화가 더 큰 양상을 보였다. 그러나 소득계층에 대한 인식이 객관적 수준과 다른 상황에서 나타나는 정책적 요구는 그들의 상황을 정확하게 반영하지 못할 수 있다는 점에서 본 연구결과에 의의가 있다.