• Transactions of the Korean Society of Mechanical Engineers B
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• v.24 no.12
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• pp.1615-1624
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• 2000

Algebraic Reynolds Stree (ARS) model is applied in order to analyze the turbulent flow of wall-attaching offset jet and to evaluate the predictability of model. The applied numerical schemes are the upwind scheme and the skew-upwind scheme. The numerical results show a good prediction in the first order calculations(i.e., reattachment length, mean velocity, pressure), however, slight deviations in the second order(i.e., kinetic energy and turbulence intensity). Comparing with the previous results using the k-$\varepsilon$ model, the ARS model predicts better than the standard k-$\varepsilon$ model, however, slightly worse than the k-$\varepsilon$ model including the streamline curvature modification. Additionallay this study can reconfirm that the skew-upwind scheme has approximately 25% improved predictability than the upwind scheme.

• Journal of Microbiology and Biotechnology
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• v.26 no.8
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• pp.1375-1382
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• 2016

The extremely halophilic archaeon Halobacterium noricense is a member of the genus Halobacterium. Strain CBA1132 (= KCCM 43183, JCM 31150) was isolated from solar salt. The genome of strain CBA1132 assembled with 4 contigs, including three rRNA genes, 44 tRNA genes, and 3,208 open reading frames. Strain CBA1132 had nine putative CRISPRs and the genome contained genes encoding metal resistance determinants: copper-translocating P-type ATPase (CtpA), arsenical pump-driving ATPase (ArsA), arsenate reductase (ArsC), and arsenical resistance operon repressor (ArsR). Strain CBA1132 was related to Halobacterium noricense, with 99.2% 16S rRNA gene sequence similarity. Based on the comparative genomic analysis, strain CBA1132 has distinctly evolved; moreover, essential genes related to nitrogen metabolism were only detected in the genome of strain CBA1132 among the reported genomes in the genus Halobacterium. This genome sequence of Halobacterium noricense CBA1132 may be of use in future molecular biological studies.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.25 no.3
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• pp.136-141
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• 2014

Objectives : The aim of this study was to examine the relationship between internet game addiction and psychiatric symptoms. Methods : A total of 447 adolescents who were recruited from a child and adolescent psychiatric clinic of university hospital completed a self-report questionnaire consisting of Korean Internet Addiction Self-scale (K-scale), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Korean-Attention-Deficit Hyperactivity Disorder Rating Scale (K-ARS), and Adolescent Happiness Index (AHI). They were classified into three internet user groups, non-addicted group (below or equal to 94), potential risk group (95 to 107) and high risk group (above or equal to 108) according to K-scale total score. Results : Significant mean differences in BDI, BAI, K-ARS, and AHI scores were observed among the three groups. The BDI, BAI and K-ARS scores showed positive correlation with K-score. The AHI score showed negative correlation with K-score. Conclusion : Findings of this study suggest that depression, anxiety, inattention, hyperactivity/impulsivity, and happiness are associated with internet game addiction.

• Proceedings of the KSME Conference
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• 2000.11b
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• pp.579-584
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• 2000

Algebraic Reynolds Stress (ARS) model is applied in order to analyze the turbulent flow of wall-attaching offset jet and to evaluate the model's predictability. The applied numerical schemes are upwind scheme and skew-upwind scheme. The numerical results show good prediction in first order calculations (i.e., reattachment length, mean velocity, pressure), while they show slight deviations in second order (i.e., kinetic energy and turbulence intensity). By comparison with the previous results using $k-{\varepsilon}$ model, ARS model predicts better than the standard $k-{\varepsilon}$ model, however, predicts slightly worse than the $k-{\varepsilon}$ model including the streamline curvature modification. Additionally this study can reconfirm that skew-upwind scheme has approximately 25% improved predictability than upwind scheme.

• The Plant Pathology Journal
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• v.19 no.1
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• pp.9-12
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• 2003

• Journal of the Korean Chemical Society
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• v.42 no.2
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• pp.172-176
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• 1998

An anion exchange resin which has Alizarin Red S (ARS) as functional group was prepared by batch method. The resin is stable in acidic solutions below 0.5 M hydrochloric acid, nitric acid and sulfuric acid and adsorption capacity of Fe(Ⅱ) ion on the resin was larger than other metal ions. The preconcentration and the separation of Fe(Ⅱ) ion from the mixture solution were carried out with the pH 4.5 buffer solution and 0.1 M $HNO_{3}$ as eluents.

• 한국IT서비스학회:학술대회논문집
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• 2002.06a
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• pp.268-274
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• 2002

현재 대부분의 대학 입시정보시스템은 ARS 및 웹기반의 서비스를 병행하여 제공하고 있다. 기존 ARS 기반 시스템의 단점은 전화버튼만으로 입력이 제한된다는 점과 시스템의 구축 및 유지보수가 용이하지 않다는 점이다. 이러한 문제점을 해결하기 위하여 전화버튼뿐만 아니라 음성인식에 의한 입력이 가능한 VoiceXML 음성 애플리케이션을 도입하였다. VoiceXML 및 음성 애플리케이션을 활용하여 입시정보시스템을 설계 및 구현해 본 결과 이러한 문제점들을 상당부분 해결할 수 있었다. 그리고 미리 연관된 키워드를 등록하여 다양한 입력옵션을 제공함으로써 자연어 처리가 좀더 용이해졌다. 이는 XML의 최대장점인 다양한 확장성과 응용성이 향상되는 것이며 사용자에게 기존 시스템보다 훨씬 개선된 사용자 인터페이스를 제공할 수 있게 된 것이다. 또한 기존 웹기반의 서비스에 쉽게 연동이 가능하고 유지보수 또한 기존 시스템보다 쉽게 할 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04b
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• pp.1197-1200
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• 2001

VXML은 사람 목소리나 전화기의 톤과 같은 음향 입력과 컴퓨터에 의해 합성 또는 녹음된 목소리를 들려주는 음성 출력을 가지는 음성 브라우저를 위한 웹 저작 언어이다. 본 논문에서는 VXML을 이용하여 작은 규모의 회사나 SOHO 사업자들에게 최적화된 ARS 기능, 음성 인식 기술을 이용하여 음성 메시지 저장 및 지능적 검색 기능, 사용자 부재 시 착신 전환 또는 SMS 통보를 찰 수 있는 개인용 전화 도우미 (PTA; Personal Telephone Assistant)의 설계 및 구현에 관하여 기술한다. PTA는 VXML 인터프리터를 내장하고 동적으로 VXML 문서를 적재함으로써 고객맞춤형의 ARS 기능을 지원한다는 장점을 갖는다.

• Journal of Ocean Engineering and Technology
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• v.25 no.5
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• pp.33-39
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• 2011

This study involved a series of experiments, which included impact tests (drop weight & Charpy) and hardness tests under various heat treatment conditions, followed by fractography observations of Normal Roll Shell steel (NRS), Abnormal Roll Shell steel (ARS), and S25C steel, in order to analyze the cause of brittle fracture and damages in Roll Shell steel. The optimal tempering temperature was characterized for ARS and NRS.

• Journal of Biosystems Engineering
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• v.42 no.3
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• pp.227-233
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• 2017

Purpose: Morphological properties of soybean roots are important indicators of the vigor of the seed, which determines the survival rate of the seedlings grown. The current vigor test for soybean seeds is manual measurement with the human eye. This study describes an application of a machine vision technique for rapid measurement of soybean seed vigor to replace the time-consuming and labor-intensive conventional method. Methods: A CCD camera was used to obtain color images of seeds during germination. Image processing techniques were used to obtain root segmentation. The various morphological parameters, such as primary root length, total root length, total surface area, average diameter, and branching points of roots were calculated from a root skeleton image using a customized pixel-based image processing algorithm. Results: The measurement accuracy of the machine vision system ranged from 92.6% to 98.8%, with accuracies of 96.2% for primary root length and 96.4% for total root length, compared to manual measurement. The correlation coefficient for each measurement was 0.999 with a standard error of prediction of 1.16 mm for primary root length and 0.97 mm for total root length. Conclusions: The developed machine vision system showed good performance for the morphological measurement of soybean roots. This image analysis algorithm, combined with a simple color camera, can be used as an alternative to the conventional seed vigor test method.