• Annual Conference of KIPS
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• 2022.05a
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• pp.268-271
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• 2022

본 논문은 블록체인에서 사용 중인 디지털서명을 국내외 동향으로 분석하여 향후 기존 디지털서명 기술이 새로운 대안의 디지털서명으로 대체될지 전망을 분석하였다. 디지털서명의 국내외 동향은 해시함수, 타원곡선, 디지털서명 알고리즘 등으로 구별하여 파악하였다. 디지털서명의 해외 동향에서는 ECDSA 외에 몇몇 새로운 알고리즘 도입이 진행 중에 있었지만 국내 동향에서는 단 하나의 사례도 찾기 힘들 정도로 여전히 대부분 업체에서는 ECDSA를 사용 중에 있었다. 아직까지 국내에서는 ECDSA의 채택률이 압도적이지만 해외에서는 조금씩 새로운 디지털서명을 채택 중에 있었다. 향후에는 ECDSA의 채택률이 줄어들고 새로운 디지털서명의 채택률이 올라갈 것으로 예상된다.

• Annual Conference of KIPS
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• 2022.11a
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• pp.330-332
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• 2022

최근, 팬데믹 상황이 나아지면서 줄었던 해외출장이 늘어나고 있다. 해외출장 시 주 교통수단으로 사용하는 항공기는 기상상황에 따라 변동이 잦고 이런 변경된 일정을 확인하기 위해서는 항공사 마다 로그인해서 일정을 확인하거나 공항 홈페이지에서 직접 항공편명을 검색해야 한다. 그렇기 때문에, 일정을 열람하기가 번거로우며 제 3 자와 일정을 공유하고자 할 때에는 제 3 자가 공항 홈페이지에서 항공번호를 직접 입력하는 방법 밖에 없으므로 더욱 불편하다. 본 연구에서는 이런 불편사항을 개선하기 위하여 하나의 웹사이트에서 자신의 일정을 등록하고 열람하며 제 3 자와 쉽게 공유할 수 있는 방법을 고안하였다.

• Cross-Cultural Studies
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• v.52
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• pp.417-446
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• 2018

The culture of memory in France regarding slavery and slave trade has slowly been expanding its horizons: from limited perspective focusing on abrogation of slavery to inclusion of discussion on real experiences and suffering of African slaves. This change has been particularly noticeable since the 150th anniversary of abrogation of slavery in France in 1998. It was the year that citizens of French overseas territories that had internalized this painful and shameful history of suffering formed a visible social movement. For the last two decades, the French government has also demonstrated consistent, proactive and prompt response to discussions of issues rooted in slavery in overseas territories, wherein slavery is the root of fundamental problems. In particular, when the Taubira Law (2001) was passed in the Senate, the Committee for the Memory of Slavery was established. This committee has since contributed to better assessment and understanding of French history of slavery and slave trade. Such was the profound as well as significant change in public perception as well as in legal and social aspects that culminated in the 2015 establishment of $M{\acute{e}}morial$ ACTe, Caribbean Centre of Expression and Memory of Slavery and the Slave Trade in Guadeloupe. Reflecting on those historic moments in recent French history, this paper examines major debates in French society regarding establishment of the $M{\acute{e}}morial$ ACTe. It assesses how Aleida Assmann's "cultural memory" was created with the establishment of $M{\acute{e}}morial$ ACTe and how it has contributed to the new cultural identity of French overseas territories.

• Korean Business Review
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• v.17
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• pp.153-183
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• 2004

The Gaisong Merchants can be regarded to playa pioneering role to activate the Korea's trade with foreign countries. In the early period of Yi-Dynasty, the Gaisong Merchants focused on personal trade, but in the middle period of Yi-Dynasty, they entered to the realm of governmental trade. Furthermore, their business activities widened to various forms of trades, for example, smuggling. Utilizing accumulated capital, Gaisong merchants expanded their trading activities to their neighboring countries such as Japan and China. In recent times, it is necessary for modem Korean companies to diversify risks through the establishment of corporations for production, marketing and R&D abroad or through joint venture, M&A and strategic alliance with foreign companies in order to reduce the risks originated from volatile economic and political situations. In this study, we utilize tools of comparative study to compare Gaisong Merchants' foreign trade strategies with those of modem companies such as AMOREPACIFIC, HANILCEMENT and SHINDORICO. The purpose of the paper is to test the hypothesis that modem Korean companies grew up by following the cases of Gaisong Merchants' business activities. We summarize our main findings as follows. First, both Gaisong Merchants and modem Korean companies have common functional core capability in the field of marketing, manufacturing technology, R&D, and human resources development. Second, both Gaisong Merchants and modem Korean companies have common organizational core capability. Third, both Gaisong Merchants and modem Korean companies have common infrastructures such as planning, finance, accounting and MIS. It constitutes the infrastructure of Korea's foreign trade sector. Fourth, both Gaisong Merchants and modem companies have common organizational culture in the field of management policy and philosophy. Actually, those factors are evaluated to be driving forces of Koera's success in foreign trade. In conclusion, the business activities of Gaisong Merchants who represented the peculiarity of Korean business spirit are partially inherited to current Korean business management. The value system and behavior pattern of modern Korean companies is succeeded from the spirit of Gaisong Merchants and it playa major role to specify the identity of Korean business administration.

• Korean Journal of Remote Sensing
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• v.36 no.6_2
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• pp.1615-1627
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• 2020

The purpose of this study is to compare and analyze the performance of KOMPSAT-3 Digital Surface Model (DSM) made in overseas testbed area. To that end, we collected the KOMPSAT-3 in-track stereo image taken in San Francisco, the U.S. The stereo geometry elements (B/H, converse angle, etc.) of the stereo image taken were all found to be in the stable range. By applying precise sensor modeling using Ground Control Point (GCP) and DSM automatic generation technique, DSM with 1 m resolution was produced. Reference materials for evaluation and calibration are ground points with accuracy within 0.01 m from Compass Data Inc., 1 m resolution Elevation 1-DSM produced by Airbus. The precision sensor modeling accuracy of KOMPSAT-3 was within 0.5 m (RMSE) in horizontal and vertical directions. When the difference map was written between the generated DSM and the reference DSM, the mean and standard deviation were 0.61 m and 5.25 m respectively, but in some areas, they showed a large difference of more than 100 m. These areas appeared mainly in closed areas where high-rise buildings were concentrated. If KOMPSAT-3 tri-stereo images are used and various post-processing techniques are developed, it will be possible to produce DSM with more improved quality.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.11
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• pp.5964-5970
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• 2013

The recent budget planning for highway infrastructure implied that the investments for Operation & Maintenance(O&M) became greater than that for new construction. This circumstance made many stakeholders pay attention to the O&M of road infrastructure and adopt other countries' policies and system for effective management. In other countries, most O&M for road infrastructure have been done by private entities using long-term contract and Korea is about to shift from one year contract to long-term contract. The most important parts for the expansion of the long-term O&M contract for road infrastructure are valuation of the O&M contract based on accurate prediction of O&M costs and instrument for proper risk sharing between contracting parties. Thus, this study provides a methodology to estimate a reasonable O&M contract price and a framework to share contract risk between contracting parties using real option. The analysis results showed that the contract price and ceiling and floor conditions for the 20 year-contract of 20 km-highway project were 45.7, 60 and 42.3 billion won, respectively.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.153-162
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• 2017

Weapon systems have been developed with high technology electronic equipment due to technology growth. In addition, the capital, operational and maintenance costs of weapon systems have all increased. However, cost of operation and maintenance for weapon systems has been decreased relatively compared to the increased capital cost of weapon systems. Therefore, the defense industry needs to research the life cycle cost of weapon systems that have high operational and maintenance costs. This paper focuses on maintenance equipment for the operation and maintenance of weapon systems. Recently, it seems that the weapon systems that have periodic calibration with maintenance equipment are valid. The equipment requires periodic calibration by the manufacturer to check its own validation. Basically, customers demand high reliability devices from foreign companies that have qualified in the global market. Therefore, the tools need to be calibrated overseas. In other words, weapon systems are not available when the equipment has to be calibrated overseas because the systems require validation with valid maintenance equipment. A purpose of this paper is to compare the loss costs that arise from the calibration of the equipment overseas and the purchasing cost of the tools. Finally, the research shows the number of equipment that customers need to minimize the cost. This research will help to improve the efficiency of operation of weapon systems and solve the problems associated with the need for maintenance overseas.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.14 no.6
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• pp.103-117
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• 2019

Under the uncertainties and the consequent turmoils of the IMF financial crisis in Korea, Hyunsung Techno was founded in 1997 on the basis of automobile press molding which is critical for the quality of automobile. Ever since, Hyunsung Techno has grown rapidly based on the domestic market; however, gradually, it had faced a stalemate in terms of the saturation, on the supply side and the growth limit, on the demand side, of the domestic molding market. Accordingly, Hyunsung pushed for a strategy to localize overseas markets and a new acquisition strategy instead of resting on the domestic mold industry's growth, and the success of these strategies enabled it to leap forward into a global company with five companies including affiliates and 70 billion won in sales. The main reason why Hyunsung Techno evolved from a small and medium-sized manufacturing company into a global businesses is due to the success of Boa Constrictor M&A strategy. Its acquisition strategy is not just a successful case of any acquisition, but a rare, maybe the first domestic case of a successful acquisition of a primary supplier by a secondary supplier. Through the success of this strategy, Hyunsung Techno has achieved a continuous growth of businesses, an increase in sales volume, and expansion into new businesses. And on top of that, this achievements is leading it to be a global conglomerate In this study, Hyunsung Techno's success strategy, which is transformed from a small domestic manufacturing company into a global enterprise, was analyzed in detail with its development stages divided into start-up, overseas expansion, acquisitions, and business diversification. Eventually, this case study is meant to offer strategic implications for other small and medium-sized businesses under the current, gloomy economy of low or zero growth of today.

• Aerospace Industry
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• s.90
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• pp.57-59
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• 2006

보잉,호주 737 AEW&C 주요 시험 완료/미 공군, 무인폭격기 개발에 20억 달러 투자/독일·프랑스, 대형 수송헬기 개발/미, 국방부 작년도 10대 방산계약업체 발 표/에어버스 밀리터리,A400M 수송기 형식증명 신청/나사,CEV 및 달착륙 임무계획 구체화/일본, 첨단 지상관측위성 발사/유럽우주기구,4대의 갈릴레오 항법위 성 제적 계약/X-51A 극초음속기 스크램제트 시험 계획/인도,유인우주임무 검토/캐나다 봄바디어,수호이의 RRJ사업참여 고려/프랑스 닷소사,중국에 팰컨 900DX 비즈제트 판매/중국,150인승 여객기 개발 준비/보잉 및 에어버스 기록적인 수주 실적

• Annual Conference of KIPS
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• 2009.11a
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• pp.31-32
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• 2009

본 논문에서는 이동 가능한 휴대용 가스 분석 장치를 제안한다. 기존의 가스 검출 시스템은 주로 해외 기술에 의존되어 있고 고가이며 대형인데 반해 개발된 시스템은 휴대용으로 설계 되었다. 설계된 시스템은 광원, 광변조기, 신호처리기와 신호기록장치 거쳐 가스 데이터를 정보처리한다.