• 한국도로학회논문집
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• 제10권3호
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• pp.231-237
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• 2008

선진국의 기본 요건들 중 하나는 잘 정비된 교통인프라라 할 수 있을 것이다. 이러한 교통안전시설에 대해 해외에서는 각종 교통안전시설에 대해 객관적인 상태평가를 기초로 하여 시설을 관리하는 자산관리(Asset Management)측면에서 시설을 관리하고 있는 추세이다. 이 중 도로관련 각종 안전시설은 매우 다양하며, 기능 또한 매우 중요하기 때문에 이들에 대한 설치 규정 및 지침을 제정하고 있다. 그러나 설치기준 및 지침이 있음에도 불구하고, 각 시설이 기준에 부합되게 설치되지 않아 오히려 도로이용자에게 불편함 뿐 아니라, 안전에도 악영향을 끼치고 있다. 본 연구에서는 다양한 도로안전시설 중 도로의 설계(운영)속도 및 기하구조에 따라 설치 간격 및 높이들이 규정화 되어있는 시설에 대해 라인스캔카메라를 이용, 이를 신속하게 측정 가능한 영상분석 모델을 개발하였다. 또한 이를 체계적으로 분석할 수 있는 프로그램을 개발하여 현장에 적용하였으며, 그 결과 매우 정확하게 시설의 크기와 설치간격을 신속하게 측정할 수 있었다.

• 한국광학회지
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• 제13권5호
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• pp.449-454
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• 2002

$^85Rb\;D_1$ 전이선의 바닥준위 $F_g$=2에서 여기준위 $F_e$=3 전이를 이용하여 열린 원자계에서의 전자기 유도 흡수 현상을 관측하고, 전자기 유도 흡수에서의 비결맞음 펌핑 효과를 조사했다. 비결맞음 광원의 편광과 세기의 변화에 따른 전자기 유도 흡수에 대한 연구를 통해 비결맞음 광원의 편광에 따라서 자기부준위들 사이의 원자밀도 분포의 변화를 유도할 수 있고, 이러한 원자밀도 재분포 효과에 의해서 전자기 유도 흡수의 정도가 달라짐을 확인하였다

• 교육시설 논문지
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• 제28권3호
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• pp.3-14
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• 2021

Speech information of teachers is transmitted to students in classrooms so that appropriate aural environment should be provided for academic purposes. Many researches have been undertaken for classroom acoustics, and acoustic standards of domestic classrooms were suggested based on the reverberation time and background noise level. However, these standards are suitable for middle and high schools and so not consider the auditory ability by ages. As a precedent research, the present study was begun to suggest an acoustic standard for lower grade elementary school classrooms with children under age 9 who have not normal auditory ability. In order to do this, acoustic performances of the lower grade classrooms were measured and compared with the general classrooms. Also, change of acoustic parameters depending on the desk layout was measured and analyzed. The measured acoustic parameters were background noise, signal to noise ratio, RT, STI, D₅₀, and IACC. As a result, it was found that background noise is exceed the standard of 35dB(A) at the schools along the road sides. Also, it was shown that most of acoustic parameters are higher in the classrooms built recently rather than the old classrooms. Generally, there are not much difference of acoustic parameters among the various desk layouts but, better acoustic performances are acquired at the center line and the seats near sound source. Also, Higher IACC was measured at the seats on the center line facing the source squarely.

• 한국의류학회지
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• 제20권1호
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• pp.3-18
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• 1996

The aim of this study is to clarify the style of fashion design which represented three types of erotic mood. And it will have its significance in finding out some standards which call be applied to practical designing. The positive analysis on this study is composed of two parts-the analysis of fashion journals and of questionaire. Analysis of fashion design is to seize and to compare frequence of 17 style of fashion design in the delivery of erotic mood in $\ulcorner$Mot$\lrcorner$ and $\ulcorner$Vogue$\lrcorner$. The questionaire is to investigate preference and inclination of perception in erotic mood of 17 style of fashion design by sex and age. The results were as follows: 1) In $\ulcorner$Vogue$\lrcorner$ than in $\ulcorner$Mot$\lrcorner$ erotic style ate actively made use of. 2) To suggest style of fashion design expressed 3 moods of erotic can be applied to practical designing is as follows. Expression of 'romantic & mysterious' mood is desirab]e exposed body line in motion style in male, twenties and thirties. Expression of 'seductive h stimulating' mood is desirable bosom exposure, leg exposure, adhere of bosom, adhere of waist, seen-through leg, slit, exposed body line in motion style in male and twenties and seen-through bosom, adhere of hip, slash style in male. This mood is desirable exposed body line motion style in thirties and forties. Expression of 'sensuous & attractive' mood is desirable bosom exposure, leg exposure, adhere of bosom, adhere of waist, seen-through leg, slit, exposed body line in motion style in male and twenties and adhere of hip, seen-through bosom, slash style ill male. And this mood is desirable adhere of waist, arm exposure style in female and adhere of waist, exposed body line in motif style in thirties and forties.

• 센서학회지
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• 제32권5호
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• pp.320-327
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• 2023

In this study, an FPGA-based sealer inspection system was developed to inspect the sealer applied to install vehicle glass on a car body. The sealer is a liquid or paste-like material that promotes adhesion such as sealing and waterproofing for mounting and assembling vehicle parts to a car body. The system installed in the existing vehicle design parts line does not detect the sealer in the glass rotation section and takes a long time to process. This study developed a line laser camera sensor and an FPGA vision signal processing module to solve this problem. The line laser camera sensor was developed such that the resolution and speed of the camera for data acquisition could be modified according to the irradiation angle of the laser. Furthermore, it was developed considering the mountability of the entire system to prevent interference with the sealer ejection machine. In addition, a vision signal processing module was developed using the Zynq-7020 FPGA chip to improve the processing speed of the algorithm that converted the profile to the sealer shape image acquired from a 2D camera and calculated the width and height of the sealer using the converted profile. The performance of the developed sealer application inspection system was verified by establishing an experimental environment identical to that of an actual automobile production line. The experimental results confirmed the performance of the sealer application inspection at a level that satisfied the requirements of automotive field standards.

• 한국교육학연구
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• 제23권4호
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• pp.79-99
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• 2017

본 연구는 대학생의 수강신청 기준을 탐색하고 교양과목과 전공과목에 따른 수강신청 기준을 살펴보는 것에 목적이 있다. 이를 위해 문헌조사 및 대학생 10명을 대상으로 사전 인터뷰를 실시하여 본 연구를 위한 설문지를 개발하였다. 최종 개발된 설문지를 활용하여 대학생 301명을 대상으로 2016년 11월 1일부터 12월 5일까지 온 오프라인 설문조사를 실시하였으며, 도출된 결과는 다음과 같다. 첫째, 선행연구, 사전 인터뷰 및 전문가 검토를 통해 확정된 대학생의 수강신청 기준은 상세한 강의계획서, 강의명, 과목 커리큘럼, 국어/영어 강의, 팀 프로젝트 여부 등 총 29개였으며, 다양한 수강신청 기준 요인의 구조를 파악하고자 탐색적 요인분석(EFA)을 실시하였다. 연구자가 설정한 대학생의 수강신청 기준은 '학습 편의성', '교수자 특성', '강의 실용성', '학습 기대 및 관심', '강의 외적 요소' 등의 5개 요인으로 구성되었다. 둘째, 대학생들은 교양과목 강의를 선택 시 '학습 편의성'이 가장 중요한 요인으로 작용하고 있었으며, '학습 기대 및 관심', '강의 외적 요소', '교수자 특성', '강의 실용성' 순이었던 반면, 전공과목의 경우 '교수자 특성', '학습 편의성', '학습 기대 및 관심', '강의 외적 요소', '강의 실용성' 순으로 중요하게 인식되고 있었다. 본 연구는 대학생의 수강신청 기준을 살펴보고 이를 교양과목과 전공과목으로 나누어 심도 있게 분석하였다는 데 의의가 있으며, 추후 본 연구를 토대로 대학생의 강의 및 교육 만족도와 연계된 수강동기 및 수강신청 기준에 관한 연구의 필요성을 제언하였다.

• Progress in Superconductivity
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• 제5권1호
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• pp.26-30
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• 2003

Magneto-cardiogram(MCG) signals may be highly distorted by the environmental noise, such as power-line interference, broadband white noise, surrounding magnetic noise, and baseline wondering. Several kinds of digital filters and noise cancellation methods have been designed and realized by many researchers, but these methods gave some problems that the original signal may be distorted by digital filter due to the wideband characteristics of background noise. To eliminate noise effectively without distortion of MCG signals, we performed multi-level frequency decomposition using wavelet packets and local adaptive noise cancellation in each local frequency range. In addition to the proposed wavelet filter to eliminate these various non-stationary noise elements, the local adaptive filter using the least mean square(LMS) algorithm and the soft threshold do-noising method are introduced in this paper. The signal to noise ratio(SNR) and the reconstruction square error(RSE) are calculated to evaluate the performance of the proposed method and compared with the results of the conventional wavelet filter and adaptive filter. The experimental results show that the proposed local adaptive filtering method is better than the conventional methods.

• 한국항공운항학회지
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• 제25권3호
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• pp.115-122
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• 2017

To achieve designed quality and reliability from R&D to force integration, an establishment of precise and distinct specifications and standards are required. However, the recent process of R&D standardization on defense acquisition system, has brought plenty of corrections on specifications and standards that may cause not only difficulties to production line and retardation to the military forces, but also a degradation of provided weapon systems. Therefore, a technical review should be performed by the developer, the producer, and the client, establishing the standard that include mass production requirements as well as clients' requirements. This paper propose a specified solution on process of R&D standardization, by applying a substantial FCA(Functional Configuration Audit) and PCA(Physical Configuration Audit) which implies participation of related agencies. By the improved PCA, 2,023 corrections on 74 types of QAR(Quality Assurance Requirement)s and 12,715 corrections on drawings are identified.

• 한국도서관정보학회지
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• 제40권1호
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• pp.157-179
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• 2009

이 연구는 장애인의 정보격차를 해소하기 위해 비장애인과 동등하게 시설을 이용할 수 있도록 계획수립의 기초자료를 제공하기 위해 시도되었다. 이를 위해 장애인시설 관련법규와 선행연구를 살펴보고, 공공도서관의 시설을 고유영역, 편의시설영역, 동선체계로 구분하여 각각의 기준을 제안하였다. 이를 바탕으로 대구광역시 공공도서관 중 장애인실을 설치하고 있는 5곳을 대상으로 장애인을 위한 공간구성의 현황을 분석하였다. 그 결과 장애인 관련공간의 배치가 미흡할 뿐 아니라 전반적인 편의시설 등이 부족하다는 사실을 확인할 수 있었다.

• International Journal of Vascular Biomedical Engineering
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• 제3권1호
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• pp.6-13
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• 2005

Individual clinical significance of each layer of CCA (common carotid artery) has not been well studied. We intended to measure the intima thickness (IT), media thickness (MT), and intima-media thickness (IMT) of CCA separately and tried to analyze the clinical significance. One hundred fifty one consecutive patients (mean age: $57{\pm}15$ years; 77 males, 74 females) underwent CCA scanning using high-resolution ultrasound. The images were off-line analyzed using B-mode ultrasound image processing, devised for individual measurement of IT and MT as well as IMT. The mean coefficients of variation of new method measuring IT, MT, and IMT separately were 0.16% for IMT and 0.21% for both IT and MT. The IT (p < 0.01), MT (p < 0.01) as well as IMT (p < 0.001) of patients with atherosclerotic disease were significantly thicker than that of the patients without atherosclerotic disease. Patients with hypertension showed significantly thicker IT (p < 0.01), MT (p < 0.001), and IMT (p < 0.001) than that of the patients without hypertension. However, only IT was thicker in patients with smoking (p<0.01) than that of the patients without smoking.