• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.159-164
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• 2021

The COVID-19 pandemic has widely spread and has become a global problem. The pandemic has had a negative impact on most countries and on the global economic growth. In the real estate and housing market, the impact of the pandemic has directly disrupted the supply of raw materials and human resources. In case of Vietnam, the real estate and housing markets are increasingly becoming important contributors to Vietnam's economy, with a combined contribution of approximately 6% to the GDP of the country. Also, the pandemic has negatively affected the real estate in Vietnam. Using a sample data of 220 home, apartment and real estate buyers in the period of April 2020 to Apr 2021 in Nam Tu Liem and Cau Giay districts, Hanoi, the research results demonstrate that the area of the house, the number of beds, and the location of the land show a positive influence on the real estate price. Meanwhile, the distance from the land to the center of the district has a negative effect on the price, which means that the further away a land is from the center, lower is its price.

• Communications for Statistical Applications and Methods
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• 제29권4호
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• pp.487-498
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• 2022

Social network analysis (SNA) techniques have recently been developed to monitor and detect abnormal behaviors in social networks. As a useful tool for process monitoring, control charts are also useful for network monitoring. In this paper, the degree and closeness centrality measures, in which each has global and local perspectives, respectively, are applied to an exponentially weighted moving average (EWMA) chart and a multinomial cumulative sum (CUSUM) chart for monitoring undirected weighted networks. In general, EWMA charts monitor only one variable in a single chart, whereas multinomial CUSUM charts can monitor a categorical variable, in which several variables are transformed through classification rules, in a single chart. To monitor both degree centrality and closeness centrality simultaneously, we categorize them based on the average of each measure and then apply to the multinomial CUSUM chart. In this case, the global and local attributes of the network can be monitored simultaneously with a single chart. We also evaluate the performance of the proposed procedure through a simulation study.

• 대한수학회지
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• 제59권4호
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• pp.821-841
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• 2022

In this paper, we introduce and study regular rings relative to the hereditary torsion theory w (a special case of a well-centered torsion theory over a commutative ring), called w-regular rings. We focus mainly on the w-regularity for w-coherent rings and w-Noetherian rings. In particular, it is shown that the w-coherent w-regular domains are exactly the Prüfer v-multiplication domains and that an integral domain is w-Noetherian and w-regular if and only if it is a Krull domain. We also prove the w-analogue of the global version of the Serre-Auslander-Buchsbaum Theorem. Among other things, we show that every w-Noetherian w-regular ring is the direct sum of a finite number of Krull domains. Finally, we obtain that the global weak w-projective dimension of a w-Noetherian ring is 0, 1, or ∞.

• 디지털융복합연구
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• 제14권10호
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• pp.205-216
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• 2016

전자산업은 많은 수익과 일자리를 제공하고 다양한 융 복합 분야에서 중요한 역할을 담당하고 있다. 최근 IT 융합기술 발달과 세계경제 통합으로 산업전략이 변하면서 ICT산업의 글로벌가치사슬(GVC)이 확대되고 있다. 글로벌가치사슬은 R&D, 제조, 판매, A/S 등 부가가치 생산을 위한 기업 활동의 모든 과정이 세계적인 차원에서 이루어지는 구조이다. 본 연구의 목적은 전자산업의 GVC 현황과 국내 대표적인 전자업체인 삼성전자와 LG전자의 GVC 추진사례를 분석하는데 있다. 전자산업의 GVC는 1980년대 이후 발전하기 시작하면서 미국과 캐나다 등 선진국에 생산기지를 구축하였다. 2000년 이후에는 인건비 등 원가절감을 위해 중국, 대만, 인도 등 저비용 국가로 이전하였다. 최근에는 중국의 인건비 및 생산비 급상승으로 인해 상대적으로 저렴한 베트남으로 생산기지를 이동하는 현상이 나타나고 있다. 국내 전자업체들은 지속적으로 성장하기 위해 수출대상국을 상대로 브랜드 및 품목별 마케팅을 실시하는 등 새로운 전략을 수행해야 한다.

• 한국의상디자인학회지
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• 제20권3호
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• pp.115-128
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• 2018

The purpose of this study is to systematize various clothing production methods that domestic fashion brands are utilizing to produce fashion products, and to propose effective clothing production methods according to the characteristics. The research methods are contents analysis method of the literatures, articles, reports, and interviewing method of the practitioners who are in charge of the production of fashion. First, the clothing production methods of the domestic fashion brands are categorized as follows. It is divided into a fashion brand management method and a promotion company entrustment method based on who carries out the clothing production and management. The fashion brand management method is subdivided into the 'rental-production', 'CMT', and 'self-production' methods. All three methods are performed at domestic and global sourcing, but the CMT method is more utilized at the global sourcing. The promotion company entrustment method is subdivided into the 'full consignment production method', the 'CMT method involving promotion company', and 'direct buying method by promotion company'. All methods are performed at domestic and global sourcing. Second, the results of reviewing effective clothing production methods, according to characteristics are as follows. If fashion brands control the production and management, they use all three fashion brand management methods. The fashion brands use the promotion company entrustment method when they wants to offer special products, or the number of items is large, or the production management is difficult, or the manpower and equipment size is reduced. The domestic sourcing is utilized by fashion brands and promotion companies when production management is required for high quality apparel production, in case of trendy and complex designs, spot production, and in small quantity production. The global sourcing is utilized by fashion brands and promotion companies when it comes to lowering the production cost, fashion brands preferred the mass production of apparel with design that can be pre-planned.

• Ocean and Polar Research
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• 제43권3호
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• pp.179-192
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• 2021

In this study, an integrated wave model from global to coastal scales was developed to improve the operational wave prediction performance of the Korean Meteorological Administration (KMA). In this system, the wave model was upgraded to the WaveWatch III version 6.07 with the improved parameterization of the source term. Considering the increased resolution of the wind input field and the introduction of the high-performance KMA 5^th Supercomputer, the spatial resolution of global and regional wave models has been doubled compared to the operational model. The physical processes and coefficients of the wave model were optimized for the current KMA global atmospheric forecasting system, the Korean Integrated Model (KIM), which is being operated since April 2020. Based on the sensitivity experiment results, the wind-wave growth parameter (β_max) for the global wave model was determined to be 1.33 with the lowest root mean square errors (RMSE). The value of β_max showed the lowest error when applied to regional/coastal wave models for the period of the typhoon season when strong winds occur. Applying the new system to the case of August 2020, the RMSE for the 48-hour significant wave height prediction was reduced by 13.4 to 17.7% compared to the existing KMA operating model. The new integrated wave prediction system plans to replace the KMA operating model after long-term verification.

• 산경연구논집
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• 제8권6호
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• pp.25-31
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• 2017

Purpose - This study examines car accidents that occurred in South Korea territory, and analyzes criminal liability of the offender and certain issues of driver's insurance, but a civil liability to the injured is excluded as civil liability belongs to auto insurance. Research design, data, and methodology - With carrying out this research, case study of driver's liability and literature review were adopted throughout. For this, car accidents that occurred in South Korean territory were examined and then criminal liability of the offender and certain issues of driver's insurance were analyzed. Results - From this case study on driver's liability it was found that the offender cannot receive insurance money from the insurer irrespective of the valid drive insurance, if there is no 'bill of agreement of criminal consensus'. This study suggests some ideas, offers suggestions of convenience and assistance of qualified claim staff to overcome a hurdle of drive insurance. Conclusions - As long as the accident is not a fraud and scam by the parties concerned, advance payment of agreement of criminal consensus is required to the insured, the policy holder within the limit of liability of driver insurance, on condition that the drive insurance is valid.

• 문화기술의 융합
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• 제9권5호
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• pp.831-835
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• 2023

2000년 초반부터 지속된 한류에 대한 전세계 대중의 관심과는 대조적으로 예술과 기술이 결합된 비즈니스 연구에 대한 우리의 노력과 지식은 제한적이다. 본 연구는 한국 공연예술의 성장과 이를 통한 한류의 지속적인 성장을 위해 공연예술에 다양한 기술을 접목한 주목할 만한 사례를 선정하고 이를 분석하기 위해 사례연구 방법론을 활용하였다. 특히 최근에 메타버스를 활용한 공연예술의 사례가 제시되었으나 이에 대해 이해관계자들의 관점에서의 고찰이 부족하다. 본 연구는 어러한 관점에서의 사례연구분석을 통해 다양한 기술 접목을 통한 공연예술의 활성화를 위한 시사점을 제시하고자 한다.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 춘계정기학술대회
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• pp.399-408
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• 2001

This paper presents a simultaneous optimization approach of case-based reasoning (CBR) using a genetic algorithm(GA) for the prediction of stock price index. Prior research suggested many hybrid models of CBR and the GA for selecting a relevant feature subset or optimizing feature weights. Most studies, however, used the GA for improving only a part of architectural factors for the CBR system. However, the performance of CBR may be enhanced when these factors are simultaneously considered. In this study, the GA simultaneously optimizes multiple factors of the CBR system. Experimental results show that a GA approach to simultaneous optimization of CBR outperforms other conventional approaches for the prediction of stock price index.

• 대한상한금궤의학회지
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• 제10권1호
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• pp.57-67
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• 2018

Objective : This case report presents the effect of Daecheongryong-tang on Impulse Control Disorder. The patient was diagnosed with Taeyang-byung based on Shanghanlun provisions. Methods : According to Shanghanlun six meridian patterns diagnostic system, we diagnosed the patient as Taeyang-byung and she has been suffering from impulse control disorder. The patient was treated with Daecheongryong-tang. And it was provided for 60 days.The changing symptom was estimated by Global Assessment of Functioning and Visual Analogue Scale. Results : After the treatment, the patient's functioning got better from 65 to 85 on GAF. And the degree of pain was reduced from 10 to 2 on VAS. Conclusions :This case study shows an effectiveness of using Daecheongryong-tang according to Diagnostic system based on Shanghanlun provisions on Impulse Control Disorder.