• 한국위성정보통신학회논문지
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• 제11권4호
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• pp.89-93
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• 2016

본 논문에서는 정지궤도관측위성의 영상품질 보장과 이에 기반한 성공적 임무수행을 위해 필수불가결한 구성요소인 INR (Image Navigation and Registration) System의 핵심적 기술 요체를 요약하여 기술한다. 이를 위해, 그 원천기술의 모태인 최초 INR System의 근원과 이후 다른 위성시스템들을 통해 부분적 변화를 거쳐 구현된 변천과정을 검토하고, 그 핵심 구성요소와 각 구성요소의 기술적 요체를 기술하며, 이러한 기술적 요체를 포괄적으로 반영하며 과거와 현재 및 미래의 다양한 INR System들에 공통적으로 적용될 수 있는 generic한 INR system 구성을 제안한다. 이는 INR System 개발의 표준적 접근방법을 제시하고 그 핵심적 기술사항과 추가적 발전가능 영역을 규명함으로써 향후의 INR System 개발, 검증 및 운용에 있어 하나의 지표로 삼고자 하기 위함이다.

• 한국정보시스템학회지:정보시스템연구
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• 제26권2호
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• pp.123-142
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• 2017

Purpose The development of the Fintech industry can be on the basis of the development in IT technologies such as Big data, IoT, cloud computing, it can be considered that the financial industry is repeating the evolution into Fintech. But the awareness of the consumers is still very low. Therefore the current dissertation, tries to deduce the suggestions for invigoration measures for Fintech by conducting an empirical study on the factors that influence the intention of reuse of Fintech on the consumer's point of view. Design/methodology/approach This study made a design of the research model by integrating the factors deducted from the Expectation Confirmation Theory. This paper empirically analyzes the impact of Continuous Usage Intention for Improvement of Fintech. The 302 survey responses were used to verify research hypotheses through covariate structural equation model. Findings According to the empirical analysis result, this study confirmed that the ultimate purpose of the Fintech service is to eliminate the social cost's waste element occurring from issue of money by not using or reducing the usage of cash. Since many Fintech users have pointed out security as the priority task, a direction for the related institutions has been proposed. Second, the content of the current dissertation will be the opportunity of broadening the perception of the current consumers that perceive Fintech as only a NFC simple payment service.

• 한국통신학회논문지
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• 제38C권11호
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• pp.972-981
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• 2013

미래전의 양상은 네트워크중심전(NCW: Network Centric Warfare)으로 바뀌고 있으며, 다양한 전력 요소가 유무선 네트워크와 상호 유기적인 연결을 통한 첨단 정보통신기술의 활용이 네트워크중심전의 구현에 핵심 요소라고 할 수 있다. 그리고 네트워크중심전에 사용되는 다양한 정보들은 기밀성과 무결성이 우수하면서 신뢰성 있는 실시간 처리만이 빠른 상황판단을 할 수 있고, 이는 전쟁 승리의 핵심이 된다. 본 논문에서는 네트워크중심전 구현에 핵심 기술 중 하나인 암호 알고리즘으로서 128비트 출력 스트림 암호를 개발했다. 개발한 스트림 암호는 AES를 기반으로 변형된 OFB모드를 적용하여 기밀성과 무결성 그리고 하드웨어로 구현하여 실시간처리와 안전성이 우수하다.

• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2004년도 The 3rd Annual Conference for The Korean Society for Bioinformatics Association of Asian Societies for Bioinformatics 2004 Symposium
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• pp.77-85
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• 2004

A significant portion (about 8% in human genome) of mammalian mRNA sequences contains AU(Adenine and Uracil) rich elements or AREs at their 3' untranslated regions (UTR). These mRNA sequences are usually stable. ARE motifs are assorted into three classes. The importance of AREs in biology is that they make certain mRNA unstable. We analyzed the occurrences of AREs and Alu, and propose a possible mechanism on how human mRNA could acquire and keep A REs at its 3' UTR originated from Alu repeats. Interspersed in the human genome, Alu repeats occupy 5% of the 3' UTR of mRNA sequences. Alu has poly-adenine (poly-A) regions at the end that lead to poly -thymine (poly-T) regions at the end of its complementary Alu. It has been discovered that AREs are present at the poly -T regions. In the all ARE's classes, 27-40% of ARE repeats were found in the poly -T region of Alu with mismatch allowed within 10% of ARE's length from the 3' UTRs of the NCBI's reference m RNA sequence database. We report that Alu, which has been reported as a junk DNA element, is a source of AREs. We found that one third of AREs were derived from the poly -T regions of the complementary Alu.

• 한국가시화정보학회:학술대회논문집
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• 한국가시화정보학회 2002년도 마이크로/바이오 가시화기술부문 학술강연회
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• pp.1-7
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• 2002

This papers describes the preparation and experimental results of a micro mass detection devices based on cantilever and a diffuser-type micro pump using screen printing thick-film technologies and Si micro-machining. PZT-PCW thick films were prepared by new hybrid method based on the screen printing. By applying these PZT-PCW piezoelectric thick films on actuator, a cantilever for mass detection sensor and a micropump for microfluidic element are successfully fabricated. Resonant frequency and displacement of PZT-PCW thick film actuator in air and in liquid are measured by laser vibrometer system as a function of actuator size. The resonant frequency of PZT-PCW thick film actuator in liquid decreases order of 1/2-1/4 due to damping effect. The sensitivity of cantilever is characterized by Au deposition method which has the mass loading effect such as adsorption of protein. The Sensitivity of PZT-0.12PCW thick film cantilever is proportional to detecting area.

• Structural Engineering and Mechanics
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• 제57권3호
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• pp.403-423
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• 2016

The challenges involved with fatigue damage assessment of steel catenary riser (SCR) in the touchdown zone (TDZ) are primarily due to the non-linear behaviour of the SCR-seabed interaction, considerable uncertainty in SCR-seabed interaction modelling and geotechnical parameters. The issue of fatigue damage induced by the cyclic movements of the SCR with the seabed has acquired prominence with the touch down point (TDP) interaction in the TDZ. Therefore, the SCR-seabed response is critical for reliable estimation of fatigue life in the TDZ. Various design approaches pertaining to the lateral pipe-soil resistance model are discussed. These techniques have been applied in the finite element model that can be used to analyse the lateral SCR-seabed interaction under hydrodynamic loading. This study investigates the sensitivity of fatigue performance to geotechnical parameters through a parametric study. In this study, global analyses are performed to assess the influence of vertical linear seabed springs, the lateral seabed model and the non-linear seabed model, including trench evolution into seabed, seabed normalised stiffness, re-penetration offset parameter and soil suction resistance ratio, on the fatigue life of SCRs in the TDZ.

• International Journal of CAD/CAM
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• 제3권1_2호
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• pp.19-29
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• 2003

Disassembly is a fundamental process needed for component reuse and material recycling in all assembled products. Integral attachments, also known as 'snap' fits, are favored fastening means in design for assembly (DFA) methodologies, but not necessarily a favored choice for design for disassembly. In this paper, design methods of a new class of integral attachments are proposed, where the snapped joints can be disengaged by the application of localized heat sources. The design problem of reversible integral attachments is posed as the design of compliant mechanisms actuated with localized thermal expansion of materials. Topology optimization technique is utilized to obtain conceptual layout of snap-fit mechanisms that realizes a desired deformation of snapped features for joint release. Two design approaches are attempted and design results of each approach are presented, where the geometrical configuration extracted from optimal topologies are simplified to enhance the manufacturability for the conventional injection molding technologies. To maximize the magnitude of deformation, a design scheme has been proposed to include boundary conditions as design variables. Final designs are verified using commercial software for finite element analysis.

• 상하수도학회지
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• 제28권1호
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• pp.103-110
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• 2014

In this study, the evaluation criteria of performance and applicability is developed to rank the combinatorial technologies for SWG (Smart Water Grid) system using AHP (Analytic Hierarchy Process) method. Security, safety, solution, suitability and sustainability which are goals of SWG technology, are used as upper level hierarchy elements. And three detailed elements for each upper level hierarchy are adopted as the lower level hierarchy. The weighted value which represents the importance of each element, could be determined through questionnaires accomplished by groups of specialists who are engaged in relevant waster industry and research area. To assess the accuracy of the evaluation criteria developed in this study, a simulation on four decision alternatives for smart water grid was carried out as an evaluation. Consequently which showed 90 % of accuracy.

• 전기학회논문지
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• 제64권7호
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• pp.1130-1136
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• 2015

Most equipments which are used to measure the switching power of the turnout depend on imports. As the data is limited to the measurements of the switching power, it is said that the equipment is insufficient to check the errors of the turnout and the electrical point machine, and set up the data for operating and maintenance. We studied not only measurements of the switching power of all turnout being used in domestic but also the development of the turnout performance total analysis equipment which can measure switching time, voltage, and current etc. at the same time. Considering that switching power of the turnout is the most basic element to check the irregularities of the turnout, in this paper, we analyzed the irregularities of the turnout through correlation between switching power of the turnout, voltage, and current of the electrical point machine. Also we performed test in commercial railway line where the turnout of MJ81 type and NS type was installed. And it is said that the test results can be used as basic technologies for ICT based real-time diagnosis and monitoring of the turnout.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
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• pp.275-278
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• 2005

본 논문에서는 유비쿼터스 환경에서 헬스케어를 제공하기 위한 새로운 유비쿼터스 헬스케어 서비스(UHS) 구조에 관해 서술한다. 이 새로운 서비스 구조는 두 가지의 특징을 가지고 있다. 첫 번째로 헬스 케어 서비스 에이젠트(Healthcare Service Agent)에 의한 헬스케어 서비스 요소(Healthcare Service Element) 선택에 관한 헬스케어 서비스 컴포지션(Healthcare Service Composition)과, 두 번째로 유비쿼터스 헬스케어 환경에서 서비스 요소 발견을 위한 새로운 헬스케어 서비스 에이젠트 구조에 관해 서술한다. UHS는 다양한 형태의 헬스케어 서비스 요소를 다루며, 이 헬스케어 서비스 요소는 사용자가 원하는 모든 의료정보에 관한 내용으로 나타낼 수 있다. UHS 기술은 유비쿼터스 컴퓨팅 환경에서 다양한 서비스를 제공할 것이다.