• 해양환경안전학회지
• /
• 제18권5호
• /
• pp.496-504
• /
• 2012

환경보호 분야에서는 국제협약의 원활한 이행을 위해 당사국 간의 긴밀한 협조가 요구되며, MARPOL 73/78 상 보고의무는 해양환경보호를 위한 국제협력의 일환으로서 중요한 역할을 하고 있다. 이 연구에서는 MARPOL 73/78 상 보고요건의 국제법적 의미에 대하여 살펴보고, 당사국들의 보고의무 이행현황을 조사하였다. 이를 위하여 2001년부터 2010년까지 지난 10년간의 MEPC/Circ.318의 각 항목에 따른 MARPOL 73/78 상 보고의무의 이행현황을 분석하였다. 또 다른 한편으로는 이러한 이행현황에 대한 분석을 통해 당사국의 보고의무 준수율을 향상할 수 있는 개선방안을 제시하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제12권1호
• /
• pp.523-549
• /
• 2018

The increasing number of subscribers and demand of multiplicity of services has turned Multi-Server Authentication (MSA) into an integral part of remote authentication paradigm. MSA not only offers an efficient mode to register the users by engaging a trusted third party (Registration Centre), but also a cost-effective architecture for service procurement, onwards. Recently, Lu et al.'s scheme demonstrated that Mishra et al.'s scheme is unguarded to perfect forward secrecy compromise, server masquerading, and forgery attacks, and presented a better scheme. However, we discovered that Lu et al.'s scheme is still susceptible to malicious insider attack and non-compliant to perfect forward secrecy. This study presents a critical review on Lu et al.'s scheme and then proposes a secure multi-server authentication scheme. The security properties of contributed work are validated with automated Proverif tool and proved under formal security analysis.

• 한국실내디자인학회논문집
• /
• 제20권4호
• /
• pp.201-210
• /
• 2011

This study is on the space planning of accommodation area in accommodation barge, which is a kind of offshore plant supply vessel providing workers with exclusive accommodation facilities. Firstly, the space layout of accommodation area is analyzed using the general arrangement drawings of 10 actually-built accommodation barges currently in use. Secondary, the design guides and standards for living quarters of offshore plants issued from overseas classification societies such as ABS, NORSOK etc. are analyzed and based on the analysis design guidelines for accommodation area of accommodation barge are newly suggested. Thirdly, a model of accommodation area in accommodation barge is set up and space arrangements and movement lines for each deck of the accommodation area of the model are planned. Fourthly, cabins, dinning room and galley, recreation spaces, and sanitary spaces of the accommodation area of the model are planned. The results of this study may be summarized as follows. An accommodation barge has 'barge deck' for small scale work and material storage, and 'accommodation area' for the living and resting of workers. The accommodation area is made of workers accommodation sector, service sector, crew sector and business sector. The interior design guidelines for accommodation area of accommodation barge should be made soon by Korea Register of Shipping.

• 전기학회논문지P
• /
• 제63권2호
• /
• pp.81-88
• /
• 2014

In this paper, an implementation of concurrent backoff delay process on a single chip with IEEE 802.15.4 hardware and 8051 processor core that can be used for analyzing the interference on IEEE 802.15.4 channels due to WiFi traffics is studied. The backoff delay process of IEEE 802.15.4 CSMA-CA algorithm is explained. The characteristics of random number generator, timer, and CCA register included in the single chip are described with their control procedure in order to implement the process. A concurrent backoff delay process to evaluate multiple IEEE 802.15.4 channels is proposed, and a method to service the associated tasks at sequentially ordered backoff delay events occurring on the channels is explained. For the implementation of the concurrent backoff delay process on a single chip IEEE 802.15.4 hardware, the elements for the single channel backoff delay process and their control procedure are used to be extended to multiple channels with little modification. The medium access delay on each channel, which is available after execution of the concurrent backoff delay process, is displayed on the LCD of an IEEE 802.15.4 channel analyzer. The experimental results show that we can easily identify the interference on IEEE 802.15.4 channels caused by WiFi traffics in comparison with the way displaying measured channel powers.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
• /
• pp.228-233
• /
• 2005

최근 인터넷의 발달로 실시간 경매 시스템의 요구가 증가되고 있다. 본 논문에서는 이러한 사회적 요구 변화에 따라, 고객이 원하는 상품을 찾아 나서는 입장에서 관심 물품을 등록시키면 자동으로 매매 상품 등록 발생 시 고객의 피씨로 정보를 알려 바로 경매에 참여 할 수 있도록 하는 응용 프로그램을 구현하고 웹을 통해 고객 정보 등록 및 상품 등록, 관심 상품 등록 등을 행하고, 모바일을 통해 언제 어디서나 관심 상품 조회 및 경매 내역 조회 등을 서비스 받을 수 있도록 하여 다양한 매체를 통해 원하는 상품을 빠르게 구매 할 수 있도록 구현하였다.

• 한국측량학회지
• /
• 제16권2호
• /
• pp.169-176
• /
• 1998

최근 급속한 사회발전과 지역간의 인적ㆍ물적 교류의 증가로 교통량이 급증하고 있으며, 이로 인해 기존 도로에 대한 유지 및 관리의 중요성이 크게 대두되고 있다. 따라서 본 연구는 일반국도를 대상으로 과학적이고 효율적인 도로의 유지, 관리업무를 위한 시범적인 도로종합정보관리 시스템을 구축하는데 목적이 있다. 지형공간정보체계를 이용하여 기존 도로에 대한 도면 및 대장과 조서상의 각종 정보를 수치화 및 데이터베이스화함으로서, 도면의 자동화는 물론 도로 제반 시설물의 검색, 갱신 및 통계분석 기능을 통해 도로의 유지보수 및 관리 업무시 신속하고 정확한 정보를 제공할 수 있도록 하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권12호
• /
• pp.5616-5642
• /
• 2016

Different from traditional auctions, electronic auctions provide a platform to allow bidders and auctioneers merchandise to each other over network anytime and anywhere. Auctioneers can publish information of goods, and bidders can choose the interested targets through this bidding platform. To ensure the fairness and security of electronic auctions, Li et al. have proposed a practical electronic auction scheme which can confirm the requirement of strong anonymity, bidding privacy, and secret bidding price. However, we have found out that Li et al.'s scheme may lurk the risk of the denial-of-service attack during the bidding phase in a sealed-bid auction. Thus, we propose a brand-new sealed-bid auction mechanism, in which the essentials of e-auction can be firmly preserved. In particular, each bidder only needs to register at the center once and then can join to multiple plays launched by different auctioneers. Moreover, the correctness of mutual authentication is confirmed according to the BAN logic model.

• Corrosion Science and Technology
• /
• 제14권5호
• /
• pp.232-238
• /
• 2015

Corrosion is of greatest concern for metallic materials exposed to corrosive seawater or aggressive marine atmospheres. Marine structures and components made of metallic materials incur an initial cost and additional large costs for corrosion control and maintenance. There have been worldwide efforts to minimize marine corrosion and extend service life of the materials. It is believed that various factors are associated with corrosion of marine grade metallic materials, particularly the temperature of the solution affecting the corrosion rate by changing dissolved oxygen solubility and concentrations of chloride. In the present study, the electrochemical characteristics of S355ML steel are investigated to identify corrosion acceleration tendencies with changes in solution temperature under marine environments. It was found that increasing seawater temperature, promoted not only activation of chloride ion transfer, but also the formation of porous $Fe(OH)_3$ or $Fe_2O_3$, leading to the acceleration of corrosion.

• International Journal of Advanced Culture Technology
• /
• 제7권4호
• /
• pp.289-294
• /
• 2019

As social network service platforms grow and one-person media market expands, people upload their own photos and/or videos through multiple open platforms. However, it can be illegal to upload the digital contents containing the faces of others on the public sites without their permission. Therefore, many people are spending much time and effort in editing such digital contents so that the faces of others should not be exposed to the public. In this paper, we propose an automatic face hiding system called 'autoblur', which detects all the unregistered faces and mosaic them automatically. The system has been implemented using the GitHub MIT open-source 'Face Recognition' which is based on deep learning technology. In this system, two dozens of face images of the user are taken from different angles to register his/her own face. Once the face of the user is learned and registered, the system detects all the other faces for the given photo or video and then blurs them out. Our experiments show that it produces quick and correct results for the sample photos.

• 정보처리학회논문지:소프트웨어 및 데이터공학
• /
• 제2권5호
• /
• pp.329-334
• /
• 2013

위치기반서비스는 이라는 것은 GPS(Global Positioning System)를 통해 자신의 위치정보를 이용한다. 이 애플리케이션은 위치기반특성을 이용하여 스마트폰을 등록된 장소에서는 초록 부분에서도 진동모드로 변환시킨다. 스마트폰 사용자가 진동모드가 필요한 장소를 저장하게 되면, 저장된 장소의 위치와 현재의 스마트폰의 GPS 위치를 비교해서 일치되면 자동으로 매너모드로 전환된다. 그리고 지정된 위치에서 일정영역을 벗어나게 되면 진동이 풀리게 되도록 하였다. 따라서 본 논문은 지능형 스마트폰을 지향하기 위해 제안하였다.