• The Journal of Asian Finance, Economics and Business
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• 제8권12호
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• pp.465-471
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• 2021

The study investigates the dynamic correlation of cryptocurrencies and equity in Vietnam and tests the safe-haven property of them from the perspective of the stock market in Vietnam during the pandemic crisis by applying the dynamic conditional correlation (DCC) GARCH model and regression with a dummy variable, respectively. This study employs time series data on the daily dataset from September 2014 to September 2021 with the focus on the two most popular cryptocurrencies - Bitcoin and Litecoin. The results show that the dynamic conditional correlations between cryptocurrencies and equity in Vietnam increased during the pandemic, however, in most periods, positive dynamic correlations often dominate. Besides, the regression results also indicate that Bitcoin and Litecoin act as weak safe-haven investments for stocks in Vietnam during the COVID-19 turmoil. They are more suitable for diversification purposes although the dynamic correlations between them and the stock index in Vietnam vary stronger during the pandemic crisis than before. The findings of this study suggest that in the period of pandemic crisis, cryptocurrencies are not concerned as effective safe-haven assets for stock in Vietnam. Instead, cryptocurrencies are only playing a potential role in diversification benefit in this economy.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.100-101
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• 2019

For buildings where a large number of the evacuees who are restricted to evacuation behavior compared to normal people, evacuation safety zones should be secured against fire. In order to form a safe haven safety zone, we are going to predict the performance of the building and describe the plan to secure a safe haven zone accordingly.

• 한국전자거래학회지
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• 제23권3호
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• pp.13-32
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• 2018

암호화폐는 익명성, 분권성, 공유성, 다중 분산원장 기재원리와 블록체인 기술의 특성을 지니고 있어 간편 신속 저렴성으로 지급결제수단의 기능을 수행하여 왔다. 비트코인은 비중앙 기관이 채굴 공급주체이고, 공급량이 제한되어 있고, 일부 화폐적인 기능을 수행하여서, 금과 매우 유사한 특성을 가지고 있다. 본고는 물가와 자본시장에 대해서 헷지와 안전처 기능과 관련하여 비트코인과 금에 대해서 정량적으로, 2010. 7. 20.~2017. 12. 27., 1943 일별 자료에 대해 비대칭적 다변량 벡터 GARCH 모형으로 분석하였다. 금에서는 물가(CPI), 주식(SP500), 환율(UKUS, KOUS)에서 강한 헷지와 안전처 기능이 추정되었다. 비트코인에서는 약한 헷지와 안전처 기능이 존재하는 것으로 추정되었다. 변동성 식에서는 미국과 한국의 인플레이션은 비트코인과 금에 대해 유의하지 않은 것으로 추정되었다. 본고는 공평성 확보를 위해 익명성의 불투명성을 해소하고, 시대의 변화에 부응하고 생동하는 헌법관에 기초하여 법의 흠결 보완이 이루어져야 함을 밝히고 있다. 유관기관에게 등록 보고 설명 준법감시 의무와 권한의 명확화를 기하고, 세제와 금융 관련 법규를 보완 개정하는 것이 이용자 보호의 강화와 전자거래의 발전에 도움이 됨을 시사하고 있다. 이와 더불어 반드시 투자자의 세심한 리스크 관리가 지속적으로 이루어져야 할 것이다.

• 한방안이비인후피부과학회지
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• 제20권3호
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• pp.268-275
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• 2007

Objectives : Pityriasis rosea is a rash that occurs most commonly in people between the ages of 10 and 43, but may occur at any age. It is common disease but I was haven't meet any case by oriental medical treatment. Methods : We experienced one case of Pityriasis rosea treated with oriental medical treatment, acupuncture and herbal medication. Results : The patient suffer from a large, scaly, pink patch on the chest and back and arm and leg. He have very terrible itching sign. After treatment his itching was subsided and large, scaly, pink patch was disappear. Conclusions: Oriental medical treatment could be safe and effective method in pityriasis rasea

• International Journal of Fluid Machinery and Systems
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• 제2권4호
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• pp.449-455
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• 2009

A reversible axial flow fan called jet fan has been widely used for longitudinal ventilation in road tunnels to secure a safe and comfortable environment cost-effectively. As shifting the flow direction is usually made by only switching the rotational direction of an electric motor due to heavy duty, rotor blades having identical aerodynamic performance for bidirectional flow should be necessary. However, such aerodynamically desirable blades haven't been developed sufficiently, since most of the related studies have been done from the viewpoint of unidirectional flow. In the present paper, we demonstrate a method to profile the blade section suitable for bidirectional flow, which is validated by studying the aerodynamic performances of rotor blades of a two-stage jet fan experimentally and numerically.

• 지적과 국토정보
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• 제47권1호
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• pp.251-265
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• 2017

지진으로부터 안전지대로 인식되어온 한반도에 2016.09.12. 규모5.8의 강진이 발생했다. 더 이상 한반도가 지진으로부터 안전지대가 아니라는 사실이 확인되었다. 따라서 본 연구는 우리사회의 지진 대비상태를 점검하고 지진발생시 직접적 피해객체인 건물의 속성을 파악하여 그 현황을 지진 안전지도구축을 통하여 효율적 지진방재정책을 위한 정책의사결정에 도움을 주고자 함에 그 목적이 있다. 지진 안전지도는 GIS툴을 활용하여 공간분석을 통해 작성된다. 지진 안전지도구축이 지진방재정책의 전부는 아니지만 부실한 지진대비체계를 보완하여 효율적으로 바꾸는 시발점이라는 것에 의미를 두고자한다.

• 한국항공운항학회지
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• 제17권2호
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• pp.31-40
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• 2009

South Korea opened Incheon international airport(IIA) in march 29, 2001, with high expectations of becoming the distribution hub of Northeast Asia and aiming at a world best air hub. IIA compares quite well with any other leading airports in the world in it's facilities for the movement of people and vehicles. However, with the sequence of events following the September, 2001. terrorist attack and the war in Iraq, South Korea, an ally of the US, cannot be considered a safe haven from terrorism. At a point in time when national security is given utmost importance, it is necessary to reevaluate the security of airports, because international terrorism can only occur via air and seaports. Nowadays all the countries of the world have entered into competition for their national interests and innovation of their images. with the increasing role of international airports also comes an increased likelihood as a terrorist target, because it can affect so many people and countries. From the condition of current international terrorism, we can realize that our IIA is not completely safe from a terrorist attack. The major part of counterterrorism is event control process. It's very important for quickly saves an accident and rescues a life of person, In addition for the normalization which the airport operation is prompt. In conclusion, we should secure the legal responsibility and establish and establish a system under which we can work actively in order to implement counter terror activities from being taken an airport.

• 가족자원경영과 정책
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• 제15권1호
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• pp.137-155
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• 2011

Rethinking the Value of Family. This study compares and contrasts positive and negative viewpoints concerning the family. Currently, a resurgence in positive viewpoints has exposed the untruths and myths put forth concerning the family on the part of those with a more pessimistic viewpoint. However, those with negative viewpoints still have not acknowledged that the family is an important part of human lives. In this study, the "equal family" (a family where tasks are split evenly among, say, the mother and father with regard to both vocation and household tasks) is criticized as an alternative to the "unfair family", as the "equal family" structure fails to go beyond the liberalization of family relationships to create a virtuous structure worthy of emulation by the children in the family. This is true in spite of the fact that the "equal family" structure has done much to improve individual freedom in the lives of its members. In conclusion, this study posits a third family structure, the "life family," as a new alternative to the other two models. The "life family" recognizes the family's central role: as a safe haven for raising children and building human esteem through close long-term relationships.

• 한국안전학회지
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• 제11권1호
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• pp.133-141
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• 1996

In spite of a tendency automatizing manaufacturing processes, since power presses are highly repetitive at high speeds, they have still been using to a large extent in many industries. More often than not, press workers have to make decisions whether work materials are located well or not, they should rearrange them or not, and their bodies would be safe or not. If the decision would be wrong, of course, they cause severe damages to human workers so that many workers haven't been willing to work with them. However, with the help of computer technologies, it would be possible to aid the press workers' decisions, and to allow or prohibit them from inserting their hands between slide rams and dies. Thus, this research was aimed to evaluate and analyze possibilities of applying Image Processing Techniques for prevention of press accidents. Through a series of procedures including Capturing work sites and material, Image Enhancement, Contouring, and Edge Finding, work characteristics were obtained and analyzed. The results showed that there were somewhat differences in image characteristics between accident-induced work scenes and accident-free ones. Consequently, if the image analyses are well carried out in real time, they would give a successful help to human press workers.

• 디지털융복합연구
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• 제10권9호
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• pp.297-309
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• 2012

전 세계적으로 인터넷을 통한 불법복제율이 인터넷 수송량의 1/4을 차지할 정도가 되어 영상 컨텐츠 불법유통에 대한 심각성을 미국영화협회는 경고하고 있다. 국내외 적으로 저작권법을 강화 또는 개정하여 불법복제물을 상습적으로 게시하거나 복제하는 행위에 대해 강력한 법적 제재를 시행하고 있다. 본 논문에서는 네티즌들이 영상 컨텐츠의 불법 공유에 대해 과연 어떤 수준의 의식을 가지고 있는지에 대해 탐구하였다. 국내를 넘어 세계적으로도 심각한 문제가 되고 있는 영상 컨텐츠 불법복제에 대해 우리나라와 외국의 사례를 현실적으로 비교해 봄으로써 불법복제의 심각성에 대해 고찰해 보는 계기가 되었다. 동일한 설문을 가지고 캐나다에서의 설문조사와 국내에서의 설문조사 결과 영상 컨텐츠 불법 사용이 위법여부에 대한 의식수준에서 우리나라가 캐나다보다 의식 수준이 앞서 있었다. 캐나다인 경우 무단 복제에 대해 의식 수준이 매우 심각한 상태가 원인으로 디지털 환경을 보호하는 기본적인 장치 및 제도가 미흡함으로 나타났다.