간행물

공학기술논문지 update

Journal of advanced engineering and technology

  • : 조선대학교 공학기술연구원
  • : 공학분야  >  기타(공학)
  • : KCI등재
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  • : 연속간행물
  • : 계간
  • : 2005-3142
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수록정보
수록범위 : 1권1호(2008)~13권2호(2020) |수록논문 수 : 678
공학기술논문지
13권2호(2020년 06월) 수록논문
최근 권호 논문
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KCI등재

1공기유체 해석을 통한 일체형 Blower BLDC 구조 개선에 대한 연구

저자 : 서동수 ( Dong-soo Seo ) , 박인선 ( In-sun Park )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 51-58 (8 pages)

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Air fluid analysis with Integrated Blower BLDC structural improvements. Integrated Blower BLDC structure is used for water removal, such as a blowing device, hand dryer, dryer, dehumidifier, car washing machine. The purpose is to remove rainwater and moisture from the umbrella at high pressure and high speed for a short time using the water separator principle. The authors conducted the 1st, 2nd, and 3rd design and experiments to achieve the optimal integrated Blower BLDC structure. In addition, the research paper was verified through simulation, experiments, and prototypes to analyze the wind speed, dehydration rate, and Air Fluid for the structure.

KCI등재

2이동통신 네트워크에서 방향 기준 위치등록과 라인 페이징의 정확한 모델링 및 성능 분석

저자 : 서재준 ( Jae Joon Suh ) , 작드수렝투무르호약 ( Zagdsuren Tumurkhuyag ) , 백장현 ( Jang Hyun Baek )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 59-65 (7 pages)

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An efficient location management plays an important role in mobile communication networks. In this study, a direction-based location registration (DIR) scheme and its modified scheme called a unidirection-based location registration (uniDIR), both of which adopt a line paging to reduce paging costs, are considered. The problems of the previous performance analysis method for DIR and uniDIR are pointed out, and a new accurate analysis model to properly analyze the correct performance is proposed. Using the new analysis method, the exact performance of DIR and uniDIR is obtained, and the performance comparison results of the two schemes are presented. According to the results of performance analyses in various environments, this study confirms that DIR has better performance than uniDIR in most cases despite the reduction in paging cost.

KCI등재

3탄성파 자료처리 프로그램 pygbt 개발

저자 : 고진석 ( Chin-surk Ko ) , 푸레브오윤빌렉 ( Oyunbileg Purev ) , 장성형 ( Seonghyung Jang )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 67-73 (7 pages)

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Seismic data processing software for petroleum exploration usually has commercialized license and is expensive. Though there is the presence of open source software, it is hard for general users to use it since it needs specialized knowledge due to developer-oriented standards. Here, pygbt which is a script-oriented and user-oriented seismic data processing software based on Geobit software, is developed. This is based on Python-2.7.5 and PyQt4. The pygbt consists of the script file editor and the XSV, XSED, and XVA modules. The script file editor makes Geobit job files that have processing parameters. The XSV module plots seismic data, the XSED module shows the attributes of seismic data in graphic mode, and the XVA module serves as a velocity analysis tool. For the performance test of the pybdt, marine seismic field data are applied. Through the parameter analysis of each module, a proper procedure for seismic reflection data in the continental shelf is suggested. The flow of processing data includes amplitude correction, deconvolution, bandpass filtering, CMP sorting, velocity analysis, NMO correction, and stack.

KCI등재

4건축물 ANC 기술 적용을 위한 가속도센서 민감성에 대한 연구

저자 : 용준혁 ( Junhyeok Yong ) , 함정균 ( Jeonggyun Ham ) , 조홍현 ( Honghyun Cho )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 75-80 (6 pages)

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The purpose of this study is to analyze the measurement sensitivity of an acceleration sensor for active noise canceling (ANC) technology. Two-story buildings were designed and the measurement sensitivity of three sensors was analyzed and compared. To investigate the measurement sensitivity of the sensor under the same environment, three sensors were installed at different positions of 0, 0.5, and 1 m, respectively, from the noise source. As a result, the sensor sensitivity of measurement was high when they were placed near the noise source, but the sensitivity decreased as the distance from the noise source increased. The measurement sensitivity of sensors between 0.5 and 1 m was almost similar. To evaluate the measurement sensitivity of sensors according to the attachment method, the adhesion method using the tape and bolts were compared. There was no significant change observed according to the attachment method. Therefore, the distance from the noise source and the sensor type had a more significant impact on the measurement sensitivity of the sensor.

KCI등재

5기능성 고분자가 코팅된 스트레인 게이지 기반 자외선 센서 기술

저자 : 고영민 ( Young-min Ko ) , 박수정 ( Su-jeong Park ) , 문종주 ( Jong-ju Moon ) , 김지훈 ( Ji-hun Kim ) , 안태정 ( Tae-jung Ahn )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 81-85 (5 pages)

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This paper proposes a new type of ultraviolet (UV) sensor coated with Azobenzene polymer material, a functional polymer that has recently been gaining interest in strain gauge equipment. Azovenzene polymers react reversively to ultraviolet rays, transforming the internal structure of the material. It is a technology that measures the change in strain induced by the ultraviolet light to the Azobenzene polymer using an electric strain gauge and detects ultraviolet rays from it. In particular, sensors are designed to determine the direction in which UV rays are introduced.

KCI등재

6국내산 왕대 줄기 추출물의 두피 화장료 소재 가능성 탐색

저자 : 문승재 ( Seung-jae Moon ) , 신현재 ( Hyun-jae Shin )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 87-93 (7 pages)

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Bamboo is a plant belonging to the native Gramineae and has long been popular in Korea and other countries. Among the different types of bamboo is Phyllostachys bambusoides, which is useful for a variety of purposes as it possesses useful properties and has a wide range of beneficial uses such as a pulpwood, timbering, and medicinal usages. The bamboo stem contains cellulose and lignin and contains various polyphenol compounds. It has also been reported that bamboo stems have antioxidant and UV-protective activities, especially in the cosmetic application of bamboo stems. However, no research has been conducted on the scalp cosmetics of the Phyllostachys bambusoides. In this study, antioxidant activity and polyphenol content were investigated to inquire the possibility of Phyllostachys bambusoides being a cosmetic material. Total polyphenol content concentration was calculated to be 500 μg/mL, and antioxidant assays (DPPH, ABTS) were performed resulting in the range of 50-900 μg/mL (IC50). All five fractions showed no cytotoxicity up to the concentration of 100 μ g/mL by MTT assay. Therefore, in this study, the antibacterial, antioxidant, and polyphenol contents of domestic bamboo royal extract were analyzed to investigate its potential as a cosmetic material for improving scalp.

KCI등재

7추출 용매에 따른 예덕나무 수피 추출물의 항산화 및 항암 활성 연구

저자 : 조유진 ( Eugene Cho ) , 김현우 ( Hyoun-woo Kim ) , 오찬진 ( Chan-jin Oh ) , 오득실 ( Deuk-sil Oh ) , 김진 ( Jin Kim )

발행기관 : 조선대학교 공학기술연구원 간행물 : 공학기술논문지 13권 2호 발행 연도 : 2020 페이지 : pp. 95-100 (6 pages)

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Mallotus japonicus, belonging to Euphorbiaceae, has been known to possess various physiological activities such as anti-bacterial, anti-virus, and anti-inflammatory effects. This study was designed to investigate the anti-oxidative activity and anti-tumor effect of the Mallotus japonicus bark extracts with water and ethanol. The amount of total polyphenolic compounds was measured using gallic acid as a standard material. The ethanol extract showed higher contents (143.6±1.57 mg GAE/g) than the water extract (120.4±6.11 mg GAE/g). Based on this result, a modified DPPH assay was conducted for the free radical scavenging activities of water and ethanol extracts. The ethanol extract revealed 80% free radical scavenging activity, compared with the 60% activity of water extract. To identify the qualitative and quantitative analyses of ethanol extract, LC/MS/MS method was applied to 15 standard materials. The result showed the highest contents of bergenin and the existence of other materials except resveratrol and oxyresveratrol. Cytotoxicity test was performed with MTT assay. Whereas the ethanol extract showed no cytotoxicity to 293T of a normal cell, the effects of ethanol extract on Fadu cell (head and neck carcinoma cells) appeared to be toxic in a 125-250 μg/mL range of concentrations. These results imply the value of developing anti-oxidant and anti-tumor agents using the ethanol extract of Mallotus japonicus bark.

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