• Title/Summary/Keyword: SCOTT

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Voltage Unbalance Evaluation in Autotransformer-Fed Electric Railway Systems using Circuit Analysis (회로해석을 이용한 전기철도 급전시스템의 전압불평형 평가)

  • 오광해;차준민
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.12 no.4
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    • pp.20-28
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    • 1998
  • This study proposes a new method to estimate voltage unbalance more exactly using Thevenin's equivalent circuit. The conventional simple formula were easily applied to evaluate voltage unbalance. Because the formula was derived on the assumption that traction load would be directly connected to the secondary windings of the main transformer, they could not consider the detailed characteristics of traction power supply system, for example, self and mutual impedances of rail, catenary and return feeder. So, the ac쳐racy of the results could not be guaranteed. The proposed algorithm is applied to a standard autotransformer-fed test system to analyze unbalance phenomena. Through simulations, we could evaluate voltage and current unbalance factors and compare the voltage unbalance of the three transformer connection schemes : single phase, V- and Scott-connections which are required for suitable train operation schedules. Additionally, we could determine the combinations of trains which can be operated under the unbalance factor limits.

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Deinking of White Ledger with Ozone

  • Won, Jong-Myoung;Noh, Kook-Il;Jo, Byoung-Muk
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.1
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    • pp.41-47
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    • 2000
  • The objective of this study is to assess the possibility of ozone as an environmentally friendly new deinking alternative for conventional deinking method. It is well known that the white ledger is very difficult to deink because the toner ink has the peculiar shape and size. Ozonization could remove the ink particles above 300 microns and thus improved the ink removal efficiency. Ozonization also improved the WRV of recycled fiber and apparent density, scott bond strength , breaking length, double fold and tear index. Thus, we believe that ozonization could be used as a deinking means of white ledger instead of the convention미 deinking method.

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Evaluation of shelter performance following the 2013 Moore tornado

  • Scott, Pataya L.;Liang, Daan
    • Wind and Structures
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    • v.21 no.4
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    • pp.369-381
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    • 2015
  • Moore, Oklahoma was hit by an EF5 tornado on May 20, 2013. The tornado track slightly overlapped with two previous tornadoes that occurred on May 3, 1999 and May 8, 2003 respectively. A research team from Texas Tech University was deployed to investigate the performance of shelters based on observation of their post-storm conditions. Sixty-one shelter units were further documented by size, manufacturer, and date of installation if available. Then they were crossed referenced with the external databases to determine their compliance with design and construction standards by the International Code Council/National Storm Shelter Association and/or criteria from the Federal Emergency Management Agency publications. Wind intensity was estimated for each shelter location using the EF scale. Results showed a marked increase in the number of exterior underground shelters as well as the popularity of a new in-garage floor underground shelter design. All of the units provided protection for their occupants with no loss of life reported. However, one older shelter had a door failure due to neglect of maintenance. Recommendations were made to improve future performance of shelters.

A Clinical Study on Strabismus Patient of Abducence Nerve Paralysis in Soyangin Improved with Yangkyuksanhwa-tang (양격산화탕(凉隔散火湯)으로 호전(好轉)된 소양인(少陽人) 외전신경마비(外轉神經痲痺) 사시환자(斜視患者) 치험 1례)

  • Choi, Ae-Ryun;Ha, Jin-Ho;Lee, Jung-Hwan;Jang, Woo-Seok;Goo, Deok-Mo
    • Journal of Sasang Constitutional Medicine
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    • v.20 no.3
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    • pp.176-183
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    • 2008
  • 1. Objectives The purpose of this case study is to evaluate the effects of Yangkyuksanhwa-tang which is based on Sasang Constitutional Medicine for strabismus of abducence nerve paralysis. 2. Methods This patient was created by Soyangin's Constitutional Medications according to the result of Sasang Constitutional diagnosis. We evaluated the abduction deficit that described how to use Scott and kraft. 3. Results & Conclusions This case study shows an efficient result of using Yangkyuksanhwa-tang in treatment of Strabismus of abducence nerve paralysis.

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Siphonostomatoid Copepods (Crustacea) Associated with Sponges from the Philippines and Vietnam

  • Lee, Jimin;Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • v.33 no.2
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    • pp.73-99
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    • 2017
  • Six new species of siphonostomatoid copepods are described from sponges collected in the Philippines and Vietnam. Two new genera of Asterocheridae, Andapontius and Holobinus, are proposed. The new species are Andapontius granulatus n. gen. n. sp., Holobinus angustus n. gen. n. sp. and Dermatomyzon boxshalli n. sp. in the family Asterocheridae and Entomopsyllus brevicaudatus n. sp., Paralepeopsyllus leei n. sp. and P. dambayensis n. sp. in the family Entomolepididae. Doropontius denticornis Thompson and Scott, 1903, is redescribed for the first time since its original record.

The Influence of Subjective Health on Depression in Patients with Coronary Artery Disease: Mediating Effects of Perceived Stress (관상동맥질환자의 주관적 건강이 우울에 미치는 영향: 스트레스 인지 매개효과)

  • Jin, Hyekyung
    • Journal of muscle and joint health
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    • v.28 no.1
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    • pp.61-69
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    • 2021
  • Purpose: This study investigated the mediating effect of perceived stress in the relationship between subjective health and depression in patients with coronary artery disease. Methods: This secondary analysis study used data from the 2016-2018 Korea National Health and Nutrition Examination Survey (KNHANES). Study participants included 466 patients over 20 years of age with coronary artery disease. Measures included questions about general characteristics, subjective health, perceived stress, and depression. The data were analyzed using complex sample design, descriptive analysis, Rao-Scott ��2 statistic, and multivariate logistic regression analysis with the SPSS 24.0 program. Results: Subjective health influenced depression, and perceived stress partially mediated it. Conclusion: To prevent depression in patients with coronary artery disease, it is necessary to develop effective stress management strategies.

Delayed diagnosis of a primary intraosseous squamous cell carcinoma: A case report

  • Abdelkarim, Ahmed Z.;Elzayat, Ahmed M.;Syed, Ali Z.;Lozanoff, Scott
    • Imaging Science in Dentistry
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    • v.49 no.1
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    • pp.71-77
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    • 2019
  • Primary intraosseous squamous cell carcinoma is a rare malignant central jaw tumor derived from odontogenic epithelial remnants. Predominantly, it affects mandible, although both jaw bones may be involved. This report describes a 60-year-old man who was initially misdiagnosed with a periapical infection related to the right lower wisdom tooth. After four months, the patient presented to a private dental clinic with a massive swelling at the right side of the mandible. Panoramic radiographs and advanced imaging revealed a lesion with complete erosion of the right ramus, which extended to the orbital floor. A biopsy from the mandibular angle revealed large pleomorphic atypical squamous cells, which is the primary microscopic feature of a poorly differentiated squamous cell carcinoma.

Permissions based Automatic Android Malware Repair using Long Short Term Memory (롱 숏 텀 메모리를 활용한 권한 기반 안드로이드 말웨어 자동 복구)

  • Wu, Zhiqiang;Chen, Xin;Lee, Scott Uk-Jin
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2019.01a
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    • pp.387-388
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    • 2019
  • As malicious apps vary significantly across Android malware, it is challenging to prevent that the end-users download apps from unsecured app markets. In this paper, we propose an approach to classify the malicious methods based on permissions using Long Short Term Memory (LSTM) that is used to embed the semantics among Intent and permissions. Then the malicious method that is an unsecured method will be removed and re-uploaded to official market. This approach may induce that the end-users download apps from official market in order to reduce the risk of attacks.

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SAMI Galaxy Survey Data Release 2: Absorption-line Physics

  • Oh, Sree;Scott, Nicholas;van de Sande, Jesse
    • The Bulletin of The Korean Astronomical Society
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    • v.43 no.2
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    • pp.53.1-53.1
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    • 2018
  • We present the second data release from the SAMI Galaxy Survey. The data release contains reduced spectral cubes for 1559 galaxies, about 50% of the full survey, having a redshift range 0.004 < z < 0.113 and a large stellar mass range 7.5 < log($M_*/M_{\odot}$) < 11.6. This release also includes stellar kinematic and stellar population value-added products derived from absorption line measurements, and all emission line value-added products from Data Release One. The data are provided online through Australian Astronomical Optics' Data Central. Our poster presents stellar/gas kinematics on the metallicity-mass plane and highlight several galaxies from the SAMI Galaxy Survey that have interesting stellar and gas kinematics. For more information about data release 2, please see: https://sami-survey.org/abdr.

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