• JSTS:Journal of Semiconductor Technology and Science
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• v.11 no.1
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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.

• The Korean Journal of Archival Studies
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• no.11
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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.

• Fire Science and Engineering
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• v.24 no.5
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• pp.107-114
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• 2010

Corruption in public offices can lead to corruption in overall society. Moreover, it can also result in steady growth of social expense caused by distrust in direct public relations of civil society administration. In order to devise a more comprehensive measure against corruption, it is essential to evaluate internal organization. This study suggests a scheme for improvement on fire officers' inter integrity, researched by in-depth interview. According to the study, there are numerous conventional corporate cultures remaining in the organization which fire officers are mutually trying to create reasonable and democratic corporate cultures. Furthermore, it was found out that structural issues of the organization, such as guaranteed anonymity of corruption prevention system, closed budget, et cetera, are the mostly dissatisfactory factors other than individual matters of the organizational members.

• JSTS:Journal of Semiconductor Technology and Science
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• v.13 no.6
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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.

• Korean Journal of Metals and Materials
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• v.49 no.8
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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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• v.2 no.3
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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.

• Journal of Aerospace System Engineering
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• v.4 no.1
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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.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.33 no.12
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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.

• The Korean Journal of Archival Studies
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• no.50
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• pp.351-388
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• 2016

The purpose of this study was to survey the electronic records for professionals on the effectiveness of the government's 3.0 full-text open information service (FOIS). By using Authenticity, Reliability, Integrity, and Usability as criteria, the management conditions of electronic records on InterPARES were analyzed in the public sector. Through this analysis, this study provided some suggestions on how management conditions for electronic records for the government 3.0 FOIS may be improved. A direction to ensure effective electronic records management was also suggested. Based on the literature review, a questionnaire was developed. The study results were as follows. First, Authenticity and Reliability were lower than the other criteria scores. In particular, Integrity had a higher score while Authenticity, Reliability, and Usability showed average scores. Second, there were various perspectives on electronic records management depending on the individuals' backgrounds and no statistically significant differences were found. In particular, administrators who are in their thirties and archivists with two to four years of experience showed higher scores in the four criteria. Based on these results, this study suggested systematic improvement plans for functions and services based on the four criteria in the Korean government's 3.0 FOIS.

• Journal of KIISE
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• v.41 no.11
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• pp.982-991
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• 2014

The integrity assurance of recorded video by car black boxes are necessary as the car black box is becoming more popular. In this paper, we propose a video data integrity assurance scheme reflecting the features of car black box. The proposed method can detect any kind of deletion, insertion, modification of frames by cyclic chaining using inter block relation. And, it provides the integrity assurance function consistently even in cases of file overwriting because of no more free space in storage, partial file data lost. And non-repudiation is supported. Experimental results with a car black box embedded system with A8 application processor show that our method has a feasible computational overhead to process full HD resolution video at 30 frames per second in a real time.