• 한국수소및신에너지학회논문집
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• 제33권6호
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• pp.660-673
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• 2022

In achieving carbon neutrality and the hydrogen economy, the estimation of H₂ cost is critical in terms of CCU technologies. This study analyzes LCOH of hydrogen produced by the carbon utilization unit with methane reforming and CO₂ from thermal power plant. LCOH for H₂ made with CO is estimated in three ways of Joint Cost Allocations with financial performance risk assessment. Regarding cost analysis, the zero value of LCOH is $6,003/ton. We found that the CCU technology has economic feasibility in terms of profitability. The sensitivity analysis result shows that the input ratio is more influential to the LCOH than other variables. Risk analysis presents the baseline price of zero value of LCOH - $8,408/ton, which is higher than the cost analysis - $6,003/ton. Mainly, the price variability of natural gas primarily affects the LCOH. The study has significant value in analyzing the financial performance risks as well as the cost of H₂ produced by a Plasma-based CCU system.

• 한국전산구조공학회논문집
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• 제36권1호
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• pp.49-56
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• 2023

기술의 발전에 따라 전 세계적으로 교량은 대형화되고 있으며, 또한 노후 교량의 수도 급격히 증가하고 있다. 이들 대형, 노후 교량에 대한 구조건전성 모니터링은 대형 사고 예방을 위해 필수적이다. 본 연구에서는 LoRa LPWAN 기반 무선계측시스템의 적용에 대한 연구를 수행하였으며, 전남 신안군에 위치한 천사대교의 사장교 구간에 LoRa 무선계측시스템을 구축하였다. 교량의 주탑, 케이블, 보강거더에 대하여 계측시스템을 구축하여 기구축되어 운영 중인 유선기반 모니터링 시스템과 성능 및 경제성을 비교하여 LoRa LPWAN 기반 무선 모니터링 시스템의 대형 교량에서의 적용성을 검토하였다.

• Nuclear Engineering and Technology
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• 제55권6호
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• pp.2112-2124
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• 2023

With the rise of economic and safety standards for nuclear reactors, new concepts of Gen-IV reactors and modular reactors showed more complex designs that challenge current tools for reactor physics analysis. A Monte Carlo (MC) two-step method was proposed in this work. This calculation scheme uses the continuous-energy MC method to generate multi-group cross-sections from heterogeneous models. The multi-group MC method, which can adapt locally-heterogeneous models, is used in the core calculation step. This calculation scheme is verified using a Gen-IV modular lead-based fast reactor (LFR) benchmark case. The influence of homogenized patterns, scatter approximations, flux separable approximation, and local heterogeneity in core calculation on simulation results are investigated. Results showed that the cross-sections generated using the 3D assembly model with a locally heterogeneous representation of control rods lead to an accurate estimation with less than 270 pcm bias in core reactivity, 0.5% bias in control rod worth, and 1.5% bias on power distribution. The study verified the applicability of multi-group cross-sections generated with the MC method for LFR analysis. The study also proved the feasibility of multi-group MC in core calculation with local heterogeneity, which saves 85% time compared to the continuous-energy MC.

• 융합보안논문지
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• 제22권1호
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• pp.135-140
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• 2022

본 연구는 스마트 디바이스와 기술을 활용한 운동 사례와 이슈를 분석하고 기존의 실버세대와 달리 높은 활동력과 경제력을 지닌 액티브시니어의 웰니스 라이프에 적합한 향후 스마트 운동 환경의 발전 방향을 제시하고자 하였다. 피트니스 산업에서도 필요한 운동도구나 서비스, 디지털 콘텐츠 등을 정기적으로 받아보거나 이용하는 구독경제가 확장되고 있는 추세이며, 하드웨어 판매와 콘텐츠 구독을 기반으로 한 비즈니스 모델이 계속 등장하고 있다. 액티브시니어에게 건강관리를 위한 통합적인 운동 서비스를 제공하는 플랫폼으로서의 가치경쟁력을 갖추기 위해서는 피트니스센터 뿐만 아니라 홈트레이닝 운동기구, 피트니스 관련 애플리케이션, 스마트 웨어러블 디바이스 시장 등이 유기적으로 연결되어 확장된 토털 플랫폼으로서의 모습을 이루어야 할 것이다. 개인별 건강상태에 알맞은 운동프로그램을 제안 받고 선택하여 운동 전, 후, 운동 중 웨어러블 디바이스를 통해 지속적인 모니터링과 피드백에 따른 운동프로그램에 실시간 변화를 주는 디지털 헬스케어 기능 연동이 스마트 피트니스 모델의 차별적 요소이다.

• 패션비즈니스
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• 제27권3호
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• pp.1-18
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• 2023

The online shopping industry in China has experienced rapid growth, particularly in the infant goods sector, which is considered highly promising in terms of its growth potential. This growth can be attributed to the Chinese market's increasing economic power, the implementation of new policies concerning marriage and childbirth, changes in family structure, and evolving and diverse consumer demands for infant products. While the infant clothing industry has emerged as a significant player in the Chinese market, there is still a lack of sufficient academic research on the online shopping environment specific to China's infant clothing industry. The objective of this study was to explore the influence of online experiential marketing on brand loyalty and purchase intention among Chinese consumers of children's wear. The study findings indicated that the emotional experience, action experience, and relationship experience encountered by consumers during online interactions had a positive and significant impact on brand loyalty. Both perceptual experience and cognitive experience had a positive and significant influence on consumers' willingness to make a purchase. The study also revealed that brand loyalty had a positive and significant effect on consumers' purchase intention. The perception of online experiential marketing, brand loyalty, and purchase intention varied based on individual attributes, and gender was found to moderate the relationship between online experiential marketing and brand loyalty.

• 한국노년학
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• 제29권2호
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• pp.395-405
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• 2009

본 연구는 노인요양시설에 입소한 노인 환자들의 부양가족을 대상으로 만족도, 가족지지, 성과지표의 관계를 파악하고, 만족도에 영향을 미치는 요인을 파악하는 것이다. 본 연구의 대상은 서울, 경기지역에 위치한 노인요양 시설 5개소에 입소한 노인환자의 부양가족 126명을 대상으로 하였으며 만족도, 가족지지, 성과지표 측정도구로 자료수집 하였다. 만족도는 가족지지와 성과지표와 유의한 순상관 관계가 있었으며(r=.250, p=.008; r=.356, p=.000), 관련변인들의 만족도에 대한 설명력은 23%였고, 만족도에 유의한 영향을 미치는 요인으로는 경제수준, 가족지지, 성과지표로 나타났다. 본 연구결과는 노인요양시설에 입소한 노인환자 및 부양가족의 만족도 향상 향상시키는데 필요한 기초자료로 활용될 수 있을 것이다. 사회복지 정책적 함의 및 향후 연구 방향을 제안하고 있다.

• Asia Marketing Journal
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• 제7권1호
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• pp.91-112
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• 2005

백화점 화장품 채널에서 중간 순위에 위치한 LG생활건강 오휘 브랜드는 자사의 약한 브랜드 파워를 고객관계전략을 통해 상쇄함으로써 고객충성도 및 매출, 시장점유율 등의 시장성과를 제고시킬 수 있었다. 오휘는 자사의 CRM 활동에 대한 체계적인 리뷰를 통해 문제점을 파악하고, 이를 개선하기 위한 구체적인 전략들을 선정하였다. 선두 기업이 되기 위한 기반인 Critical Mass의 고객을 확보하고, 맞춤형 충성도 프로그램을 개발하여 고객충성도를 증가시켰다. 또한 전략의 실행력을 높이기 위해서 현장의 직원들이 실제 고객들을 판별해서 편익 프로그램을 구현할 수 있도록 고객 등급을 단순화시켰다. 마지막으로 CRM 활동이 전사적으로 자리 잡을 수 있도록 성공사례 공유를 통한 지식 확산과 더불어 성과보상 체계(KPI)를 CRM에 연결시켰다. 이러한 일련의 활동을 통해 오휘 브랜드는 시장점유율의 상승 및 경쟁사보다 높은 매출 성장률, 고객만족도 제고를 이루었다.

• 분석과 대안
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• 제1권2호
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• pp.2-12
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• 2017

Research on democratic transitions has relatively ignored the question of why some countries experience a regressive form of political pacts, while others do not. This paper develops a simple game-theoretic model to explain the phenomenon of collusive pacts in the process of democratization. Trasformismo is a term that refers to a system of political exchange based on informal clientelistic politics. The existing studies of the politics of trasformismo have emphasized the timing of industrialization and the tradition of strong state as conditions of the politics of trasformismo. However, not every late industrializers and not every strong states experienced some variants of collusive political pacts in their trajectories of democratization. In this paper, I contend that the politics of trasformismo is rather a generalizable pattern of political elites' behavior under particular circumstances. By developing a simple game theoretic model, this paper suggests the conditions under which political actors are likely to collude to a regressive form of political pacts. The model shows that the likelihood of collusion to a regressive form of political pacts is a function of a set of parameters. First, a higher level of incumbency advantage in electoral competition is likely to be associated with a higher probability of collusive political pacts. Second, a higher degree of the monopoly of political representation of political parties without a close link with a variety of societal forces is likely to induce collusive behavior among politicians. Third, the ruling party leader's expectations about the likelihood of a safe extrication are related to collusive political pacts. This paper then engages in a case study of the 1990 three-party merger in South Korea. The 1990 Korean case is interesting in that the ruling party created a new party after having merged with two opposition parties. This case can be considered a result of political maneuver in a context of democratization. The case study suggests the empirical relevance of the game-theoretic model. As the game of trasformismo and the case study of the 1990 three-party merger in South Korea have shown, the collusive political pact was neither determined by a certain stage of economic development nor by a particular cultural systems. Rather, it was a product of the art of trasformismo based on party leaders' rational calculations of the expected likelihood of taking governing power.

• 한국초전도ㆍ저온공학회논문지
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• 제25권4호
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• pp.70-74
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• 2023

The Small Punch Test (SPT) was developed to evaluate the softening and embrittlement of materials such as power plants and nuclear fusion reactors by taking samples in the field. Specimens used in the SPT are very thin and small disk-shaped compared to specimens for general tensile test, and thus have economic advantages in terms of miniaturization and repeatability of the test. The cryogenic SPT can also be miniaturized and has a significantly lower heat capacity than conventional universal test machines. This leads to reduced cooling and warm-up times. In this study, the cryogenic SPT was developed by modifying the existing room temperature SPT to be cooled by liquid nitrogen using a super bellows and a thermal insulation structure. Since the cryogenic SPT was first developed, basic experiments were conducted to verify the effectiveness of it. For the validation, aluminum alloy 6061- T6 specimens were tested for mechanical properties at room and cryogenic temperature. The results of the corrected tensile properties from the SPT experiment results were compared with known room temperature and cryogenic properties. Based on the correction results, the effectiveness of the cryogenic SPT test was confirmed, and the surface fracture characteristics of the material were analyzed using a 3d image scanner. In the future, we plan to conduct property evaluation according to the development of various alloy materials.

• Earthquakes and Structures
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• 제25권5호
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• pp.359-367
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• 2023

High-rise structures are considered as symbols of economic power and leadership. Developing countries like India are also emerging as centers for new high-rise buildings (HRB). As the land is expensive and scarce everywhere, construction of tall buildings becomes the best solution to resolve the problem. But, as building's height increases, its stiffness reduces making it more susceptible to vibrations due to wind and earthquake forces. Several systems are available to control vibrations or deflections; however, outrigger systems are considered to be the most effective systems in improving lateral stiffness and overall stability of HRB. In this paper, a 42-storey RCC HRB is analyzed to determine the optimum position of outriggers of different materials. The linear static analysis of the building is performed with and without the provision of virtual outriggers of reinforced cement concrete (RCC) and pre-stressed concrete (PSC) at different storey levels by response spectrum method using finite element based Extended3D Analysis of building System (ETABS) software for determining responses viz. storey displacement, base shear and storey drift for individual models. The maximum allowable limit and percentage variations in earthquake responses are verified using the guidelines of Indian seismic codes. Results indicate that the outriggers contribute in significantly reducing the storey displacement and storey drift up to 28% and 20% respectively. Also, it is observed that the PSC outriggers are found to be more efficient over RCC outriggers. The optimum location of both types of outriggers is found to be at the mid height of building.