• Journal of the Korean Society for information Management
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• v.21 no.1
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• pp.173-186
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• 2004

This study examines coverage and coverage overlap of the three major Korean web directories, Naver, Yahoo Korea, and Empas. This study also suggests a methodology for collecting and processing web sites provided by these web directories. A method for napping main categories was developed. Each directory provided registered web pages in a slightly different way. Reference links had a significant influence on the coverage of each web directory. The overlap of pages among three directories was quite low, It is expected that this study could contribute to the field of web research by providing insights to how directories provide web pages and suggesting a methodology for the analysis of directory coverage.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.37 no.9
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• pp.11-23
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• 2000

Multicarrier DS-CDMA is an effective approach to realize wideband CDMA system in a multipath fading channel. In this paper, we propose a convolutionally-coded overlapped multicarrier DS-CDMA system, and analyze the performance with subband overlapping variation to determine the overlapping percentage showing best performance. Given a total number of subcarriers M*R, we will show that the BER variation is highly dependent on the rolloff factor P of raised-cosine chip wave-shaping filter irrespective of convolutional encoding rate I/M and repetition coding rate 1/R. We also analyze the possibility of reduction in total MUI by considering both variation of a rolloff factor (0 ($\beta$ :1) and variation of subband overlapping factor (0 ( A :2), and show that the proposed system may outperform the multicarrier DS-CDMA system in [1, 12].

• Journal of Digital Convergence
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• v.15 no.3
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• pp.181-186
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• 2017

The system optimization is a technique that changes the structure of the program in order to extract the duplicated modules without changing the source code, reuse of the extracted module. Structure-oriented development and object-oriented development are efficient at crosscutting concern modular, however can't be modular of crosscutting concept. To apply the crosscutting concept in an existing system, there is a need to a extracting technique for distributed system optimization module within the system. This paper proposes a method for extracting the redundant modules in the completed system. The proposed method extracts elements that overlap over a source code analysis to analyze the data dependency and control dependency. The extracted redundant element is used to program dependency analysis for the system optimization. Duplicated dependency analysis result is converted into a control flow graph, it is possible to produce a minimum crosscutting module. The element extracted by dependency analysis proposes a system optimization method which minimizes the duplicated code within system by setting the crosscutting concern module.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.313-314
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• 2017

이 논문에서는 DNA 분석단계 중 하나인 DNA 리드(Read)에 대한 중복제거 방법을 분산 병렬처리 기법을 적용하여 가속화하는 방법을 제안한다. 기존 제안된 중복제거 기법을 Spark을 기반으로 병렬처리 되도록 하는 접근방법을 취한다. 제안하는 기법은 실험을 통해서 기존 중복제거 기법과 비교하여 성능을 입증한다.

• The Journal of the Korea Contents Association
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• v.16 no.1
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• pp.470-481
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• 2016

The purpose of this study is to identify the actual condition of poly-victimization and examine the difference in the levels of psychological adaptation and delinquency by victimization types among adolescents. A total 6,174 cases from '2013 Adolescent Deviant Behaviors and Policy Issues' of NYPI was used for the analysis. Main findings are that 8.3% of adolescents exposed to more than two types of victimization and 2.1% of them experienced more than three types of victimization. There were significant differences in the levels of psychological adaptation and delinquency by victimization types. Study findings were discussed in terms of implications for research and intervention of adolescent poly-victimization.

• Journal of dental hygiene science
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• v.7 no.1
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• pp.49-54
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• 2007

This research was conducted to provide standardization method for new dental hygiene curriculum by identifying the overlapping of education content of the Department of Dental Hygiene and analytic syllabus. To complement these overlapping education programs, I would like to make some proposals. First, unified course shall be provided by compromising specific terms of overlapping subject, overlapping curriculums for the necessary skills required for job analysis of dental hygienist and overlapping class time. This shall increase the efficiency the class time and required curriculums. Next, proactive and continuos research for standardized approach to the Department of Dental Hygiene education content is necessary and Dental Hygiene academic circle shall build trust.

• KIISE Transactions on Computing Practices
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• v.22 no.1
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• pp.56-60
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• 2016

Peptide identification in tandem mass spectrometry is usually done by searching the spectra against target databases consisting of reference protein sequences. To control false discovery rates for high-confidence peptide identification, spectra are also searched against decoy databases constructed by permuting reference protein sequences. In this case, a peptide of the same sequence could be included in both the target and the decoy databases or multiple entries of a same peptide could exist in the decoy database. These phenomena make the protein identification problem complicated. Thus, it is important to minimize the number of such redundant peptides for accurate protein identification. In this regard, we examined two popular methods for decoy database generation: 'pseudo-shuffling' and 'pseudo-reversing'. We experimented with target databases of varying sizes and investigated the effect of the maximum number of missed cleavage sites allowed in a peptide (MC), which is one of the parameters for target and decoy database generation. In our experiments, the level of redundancy in decoy databases was proportional to the target database size and the value of MC, due to the increase in the number of short peptides (7 to 10 AA). Moreover, 'pseudo-reversing' always generated decoy databases with lower levels of redundancy compared to 'pseudo-shuffling'.

• Journal of Life Science
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• v.19 no.4
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• pp.467-471
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• 2009

The entire D-loop region of the porcine mitochondrial DNA (mtDNA) was amplified from six pig breeds (Landrace, Duroc, Large White, Korean native pig, Berkshire, and Hampshire) using a primer set designed on the basis of reported porcine mtDNA sequences. From analyses through cloning, DNA sequencing and multiple sequence alignment, an 11-bp (TAAAACACTTA) duplication was observed after known tandem repetition in the D-loop region, which promoted hetroplasmy in mtDNA. Although the existence of the 11-bp duplication has been previously reported in Duroc and Japanese native pigs, there have not been any attempts to know the characteristics of this duplication in other breeds so far. A 150 bp fragment containing the 11-duplication was amplified and typed by polyacrylamide gel electrophoresis (PAGE). All Large Whites had two duplication units and Duroc showed heteromorphic patterns, 11.2% (9/80) of the animals had the 11-bp duplication in total. On the other hand, Landrace, Berkshire, Hampshire and Korean native pigs were non-duplicated. This result showed that the 11-bp duplication could be used as a breed-specific DNA marker for distinguishing pure Landrace and Large White breeds.

• Korean Journal of Social Welfare Studies
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• v.49 no.4
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• pp.221-249
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• 2018

This study examined the co-occurrence of child maltreatment and domestic violence in South Korea, using the administrative data from Korean Child Protection Services. Existing literature showed that the co-occurrence rate was high and that the co-occurrence was important in prevention and intervention for child maltreatment. However, few studies have investigated the co-occurrence of child maltreament and domestic violence in South Korea. None of the studies have examined the co-occurrence from the perspective of child protective services. This study analyzed the rate of co-occurrence among abusive families involved with Korean Child Protective Services and examined the relationship between domestic violence and child maltreatment. Results showed that 21.4% of the abusive families had also experienced domestic violence. Various characteristics(i.e., detailed abuse characteristics, psychosocial characteristics of perpetrators) differed between co-occurrence families and maltreatment-only families. Domestic violence was a significant predictor of child maltreatment, but the detailed relationships differed according subtypes of maltreatment. Based on the results, implications for theory and service integration between services for domestic violence victims and child protective services were discussed.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.3
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• pp.745-756
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• 2016

As infringement accidents of personal information have often occurred and estimates of damages are too large, the government introduces many certifications related with personal information management system for protecting personal information. Among them, PIMS and PIPL share many points in common, so many complaints about duplicate regulation have been suggested. This study evaluates the duplication of two certifications in order to examine redundancy between PIMS and PIPL both of which have been controversial.