• JSTS:Journal of Semiconductor Technology and Science
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• 제11권1호
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• pp.15-22
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• 2011

Interconnect lines with inter-layer vias are experimentally characterized by using high-frequency S-parameter measurements. Test patterns are designed and fabricated using a package process. Then they are measured using Vector Network Analyzer (VNA) up to 25 GHz. Modeling a via as a circuit, its model parameters are determined. It is shown that the circuit model has excellent agreement with the measured S-parameters. The signal integrity of the lines with inter-layer vias is evaluated by using the developed circuit model. Thereby, it is shown that via may have a substantially deteriorative effect on the signal integrity of high-speed integrated circuits.

• 기록학연구
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• 제11호
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• pp.41-89
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• 2005

Good records management is essential for good governance in modern democratic society. Though the records management institutions and policies in Korea were improved rapidly since the enactment of Public Records Management Act in 1999, the newly introduced records systems for administrative organizations including the New Electronic Data Management System(NEDMS) and Electronic Records Management Systems for Records Centers(ERMS/RC) have many problems in terms of ensuring the quality of records. The purpose of this study aimed to suggest quality criteria for measuring authenticity, reliability, integrity and usability of electronic records based on the international standards and guidelines such as ISO 15489, InterPARES project and BS ISO 15489 guidelines. The present study began with defining concepts and structure of records as evidence of activities. And it analysed four characteristics such as authenticity, reliability, integrity and usability of records by comparing various definitions in diplomatics and archival science literatures, and some projects reports. Finally it suggested the quality criteria for measuring authenticity, reliability, integrity and usability of records, and methods for maintaining them in each process of creation, maintenance and preservation.

• 한국화재소방학회논문지
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• 제24권5호
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• pp.107-114
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• 2010

공직사회의 부패는 사회전반의 부정부패를 초래할 수 있으며, 시민사회의 직접적인 대민 관계에 있어 행정에 대한 불신을 초래하여 점증적으로 사회적 비용의 증가를 가져 올 수 있다. 보다 포괄적인 부패 방지책을 강구하기 위해서는 조직내부에 대한 내부평가가 이루어 져야 할 것이다. 본 연구는 소방공무원의 내부청렴도 향상을 위해 심층면접의 연구방법을 통해 소방공무원의 내부청렴도 향상 방안을 제시하는데 있다. 연구의 결과 소방조직은 전통적인 조직문화가 많이 남아 있는 것으로 조사되었으나, 소방공무원 상호간의 이를 합리적이고, 민주적인 조직문화 조성에 노력하고 있는 것으로 나타났다. 또한 조직구성원 개개인의 문제도 있지만 대체로 조직 구조적인 문제, 즉, 부패방지제도의 익명성 보장, 예산의 비공개 등이 불만요인으로 작용하고 있는 것으로 나타났다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제13권6호
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• pp.594-607
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• 2013

A new efficient analytical eye-diagram determination technique for coupled interconnect lines is presented. Two coupled lines are decoupled into isolated eigen modes; bit blocks for coupled lines, which are defined as a block of consecutive bits, are then represented with decoupled modes. The crosstalk effects within the bit blocks are taken into account. Thereby, the crucial input bit patterns for the worst case eye-diagram determination are modeled mathematically, including inter-symbol interference (ISI). The proposed technique shows excellent agreement with the SPICE-based simulation. Furthermore, it is very computation-time-efficient in the order of magnitude, compared with the SPICE simulation, which requires numerous pseudo-random bit sequence (PRBS) input signals.

• 대한금속재료학회지
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• 제49권8호
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• pp.589-595
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• 2011

Laminated glass fiber-reinforced plastic (GFRP) composites were applied to an insulating structure of a magnet system for a nuclear fusion device. Decreased inter-laminar strength by a strong repulsive force between coils which is induced a problem of structural integrity in laminated GFRPs. Therefore, it is important to investigate the inter-laminar characteristics of laminated GFRP composites in order to assure more reliable design and better structural integrity. Three types of the laminated GFRP composites using a high voltage insulating materials were fabricated according to each molding process. To evaluate the grade of the fabricated composites, mechanical tests, such as hardness, tensile and compressive tests,were carried out. The autoclave molding composites satisfied almost of the mechanical properties reguested at the G10 class standard, but the vacuum impregnation (VPI) and Prepreg composites did not.

• STI Policy Review
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• 제2권3호
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• pp.13-22
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• 2011

During the 1990s, North Korea suffered from severe economic hardships in the aftermath of the collapse of the Soviet bloc and massive floods; North Korea is still has not escaped this suffering. South Korea has pursued various inter-Korean cooperation projects to help North Korea open and develop its economy; however, there are limited successful cases for improvement in North Korea. It is imperative to define a long-term strategy through analysis of key success factors for inter-Korean cooperation in order to develop more successful cases of inter-Korean cooperation; however, limited studies have been conducted to analyze successful inter-Korean cooperation projects. This study selects the "Seed Potato Project" (implemented by the World Vision) as a successful case to be analyzed and identifies key success factors for inter-Korean cooperation. As illustrated in previous studies, the results of the analysis of success factors of a "Seed Potato Project" from a trust-building perspective has revealed that this project follows key success factors like openness, integrity, consistency, and benevolence. In the last section of this report, this study also presents important policy implications to develop future successful cases for inter-Korean cooperation.

• 항공우주시스템공학회지
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• 제4권1호
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• pp.19-22
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• 2010

The accuracy and integrity of global navigation satellite systems (GNSS) can be improved by using GNSS augmentation systems. Large ionospheric spatial gradient, during ionosphere storm, is a major threat for using GNSS augmentation systems by increasing the spatial decorrelation between a reference system and users. Ionosphere decorrelation behavior can be analyzed by using dual frequency GPS data. GNSS receivers have their own biases, called inter-frequency bias (IFB) between dual(P1 and P2) frequencies and they must be accurately estimated before computing ionosphere delays. GPS network data in Korea is used to compute each receiver's IFB, and their estimation accuracy and variability are analyzed. IFB estimation methodology to apply for ionosphere gradient analysis is discussed.

• 대한기계학회논문집B
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• 제33권12호
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• pp.1007-1013
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• 2009

The purposes of this study are to evaluate the power performance through CFD analysis and structural integrity through uni-directional FSI analysis in aerodynamic design and structure design of wind turbine blade. The blade was designed to generate the power of 2MW under the rated wind speed of 11 m/s, consisting of NACA 6 series, DU series and FFA series airfoil. The inside section of the blade was designed into D-spar structure and circular stiffener was placed to reinforce the structural strength in the part of hub. CFD analysis with the application of transitional turbulence model was performed to evaluate the power performance of blade according to the change of TSR and 2.024MW resulted under the condition of rated wind speed. TSR of 9 produced the maximum power coefficient and in this case, Cp was 0.494. This study applied uni-directional FSI analysis for more precise evaluation of structural integrity of blade, and the results of fiber failure, inter fiber failure and eigenvalue buckling analysis were evaluated, respectively. For the evaluation, Puck's failure criteria was applied and the result showed that fiber failure and inter fiber failure did not occur under every possible condition of the analysis. As a result, power performance and structural integrity of 2 MW blade designed in this study turned out to satisfy the initial design goals.

• 기록학연구
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• 제50호
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• pp.351-388
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• 2016

정부 3.0의 원문정보공개서비스의 대상인 전자기록물이 기록학적인 관점에서 체계적이고 효율적으로 활용되고 있는지를 파악하고자 공공기관의 정보공개담당자들을 대상으로 관련 설문을 조사 분석하였다. 이를 위해 InterPARES의 전자기록물 구성요소에 대하여 기록물의 4대 원칙인 진본성, 신뢰성, 무결성, 이용가능성을 지표로 하는 전자기록물의 구성요소를 분석하였다. 이러한 분석을 통하여 원문정보공개서비스에서 전자기록구성요소에 따라 관리하며 향상시킬 수 있는 요인을 찾아 개선해야 할 점을 밝혔다. 그 결과를 바탕으로 원문정보공개서비스 시 전자기록물의 요소들의 개선과 기능보완, 특성에 맞는 서비스 등을 제시하였다.

• 정보과학회 논문지
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• 제41권11호
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• pp.982-991
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• 2014

차량용 블랙박스의 이용율이 급격히 증가하고 있으나, 교통사고 발생 시에 블랙박스에 기록된 사고 영상이 조작되거나 임의 삭제되지 않았음을 보장하는 무결성 검증 방안이 절실히 요구된다. 본 논문에서는 차량용 블랙박스의 영상 기록의 특성을 반영하여 블랙박스에 저장된 영상 데이터의 무결성을 보장하는 방안을 제시한다. 본 제시된 방안은 저장된 모든 영상 데이터 블록들을 각각 그 인접한 영상 데이터 블록들과 순환형 체인으로 연결시켜 무결성 정보를 생성한다. 제안된 방법은 데이터 블록의 삽입, 삭제, 변경 등의 공격을 탐지하고 부인 불가 기능을 지원할 수 있을 뿐 아니라, 더 나아가 파일 저장 공간이 가득차서 가장 오래된 블록을 삭제하고 새로운 블록을 삽입 할 때나 일부 영상 정보가 물리적으로 손상이 되더라도 일관성 있게 무결성 보장 시스템이 작동할 수 있는 구조를 가지는 있다. 실험 결과에 따르면, 본 방법은 full HD@30fps의 경우에도 임베디드 시스템에서 실시간성이 충분하다.