• Proceedings of the KIEE Conference
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• 2004.07d
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• pp.2353-2355
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• 2004

본 논문에서는 고정도의 방사선 측정이 가능한 능동형 전자선량계를 제작하기 위해 필수적으로 요구되는 반도체 방사선 검출기를 ASIC으로 구현하였다. 이는 전자선량계의 소형화와 저소비전력을 실현할 수 있도록 전치증폭기와 성형증폭기를 일체화한 것으로 방사선과 방사선 검출 소자인 상용 핀 포토다이오드의 상호작용으로 생성된 수 [nA]의 전류펄스를 측정할 수 있다. MOSIS 공정을 통하여 ASIC으로 구현된 방사선검출기는 $10{\mu}Ci$의 ${\gamma}$-선 Ba-133, Cs-137 및 Co-60의 세 핵종에 대하여 방사선 조사시험을 수행하여 구현된 방사선 검출기의 유용성을 입증하였다.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2285-2288
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• 2002

Recently, electronic personal dosimeters based upon silicon PIN photodiode or miniature GM tube were developed and have attracted a lot of attention because of the advantages of their nature such as indication of dose rate and the cumulative dose, and facilitation of record keeping. In this paper, we have developed a high-sensitivity electronic personal dosimeter with silicon PIN photodiode. The electronic personal dosimeter is constructed with silicon PIN photodiode, preamplifier, and shaping amplifier. To show the effectiveness of electronic personal dosimeter, we conducted nuclear radiation experiments using $\gamma$-ray Ba-133, Cs-137, and Co-60. The electronic personal dosimeter have a good linearity on $\gamma$-ray energy and activity.

• TTA Journal
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• s.61
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• pp.128-133
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• 1999

우정성은 통신백서(1998년 통신에 관한 현황 보고)를 5월 26일 각료 회의 후에 공표하였다. 이번 백서는 $\ulcorner$디지털 네트워크 사회 개막$\~$변해가는 라이프스타일$\~$$\lrcorner$이라는 제목의 특집호로 구성되었다. 본 특집에서는 급속히 보급되고 있는 인터넷, 휴대전화, CS 디지털 방송 등의 미디어가 일, 취미$\cdot$오락, 학습 등의 생활에 주는 영향을 분석하고 있다. 또 정보 literacy의 일$\cdot$미 비교 등도 실시하여 $\ulcorner$다양한 선택$\lrcorner$과 $\ulcorner$자유로운 참가$\lrcorner$의 기회가 제공되어,$\ulcorner$개성 발휘$\lrcorner$를 할 수 있는 보다 풍부하게 열린 $\ulcorner$디지털 네트워크 사회$\lrcorner$실현을 위한 과제를 제시하고 있다. 이외에 본 백서에서는 정보통신의 현황분석이나, 정보통신산업의 일$\cdot$미 비교, 사이버 비즈니스의 특성 분석, 도도부현의 정보화 분석 등을 나타내고 있다. 또한 작년에 이어, CD-ROM판을 첨부한 책자 및 DVD-ROM판 백서를 판매하고 있다. 금년부터 일본의 백서로는 처음으로, 인터넷상에 공표일 당일부터 백서 전문을 게재하였다. 1998년 백서는 3장으로 구성되어 있는데 각 장의 포인트를 소개하고자 한다.

• Nuclear Engineering and Technology
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• v.55 no.12
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• pp.4472-4476
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• 2023

In this study, it has been shown that the true coincidence summing correction factor can be obtained for the first time using the PHITS Monte Carlo program. Determining this correction factor using different methods and tools in each laboratory to increase the possibility of achieving high-efficiency measurement conditions is still popular in gamma-ray spectrometry. By using ¹³³Ba, ¹⁵²Eu, ¹³⁴Cs, and ⁶⁰Co point sources, the true coincidence summing factor was investigated in both near and far counting geometries for 15 different energy values. GESPECOR software was used to validate the results obtained with PHITS. A remarkable agreement was obtained between PHITS and GESPECOR, with a discrepancy of less than 3%. With this study, a new tool has been proposed to obtain the true coincidence summing factor, which is one of the significant correction factors investigated/calculated in gamma-ray spectrometric studies.

• Journal of Radiation Protection and Research
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• v.22 no.2
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• pp.127-133
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• 1997

In this study an EGS4 simulation code was used to calculate real energy spectrum from measured ${\gamma}$-ray energy spectrum obtained using 2-dimensional radiation monitoring system. As a result, the $39{\times}39$ response matrix was calculated the energy range of 0.1 to 2 MeV which energy interval of 50 keV The real energy spectrum for Co-60 radioisotope was calculated using inverse of response matrix. It was confirmed that the calculated response matrix was useful to the analysis of the measured energy spectrum for the radiation monitoring system.

• Clinics in Shoulder and Elbow
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• v.21 no.4
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• pp.207-212
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• 2018

Background: Delaminated rotator cuff tear is known to be a degenerative tear having a negative prognostic effect. This study undertook to compare the anatomical and clinical outcomes of delaminated tears and single layer tears. Methods: Totally, 175 patients with medium to large rotator cuff tears enrolled for the study were divided into 2 groups, based on the tear pathology: single layer tear (group 1) and delaminated tear (group 2). Preoperatively, length of the remnant tendon, muscle atrophy of supraspinatus (SS), and fatty degeneration of SS and infraspinatus (IS) muscles were assessed on magnetic resonance imaging (MRI). For follow-up, the repair integrity of the rotator cuff was evaluated by ultrasonography. Clinical outcomes were assessed by evaluating the Constant score (CS) and Korean Shoulder Score (KSS). Results: Retears were detected in 6 cases of group 1 (6.5%) and 11 cases of group 2 (13.3%). Although higher in group 2, the retear rate was significantly not different (p=0.133). Preoperative MRI revealed length of remnant tendon to be $15.46{\pm}3.60mm$ and $14.17{\pm}3.16mm$ (p=0.013), and muscle atrophy of SS (occupation ratio) was $60.54{\pm}13.15$ and $56.55{\pm}12.88$ (p=0.045), in group 1 and group 2, respectively. Fatty degeneration of SS and IS in both groups had no significant differences. Postoperatively, no significant differences were observed for CS and KSS values between the groups. Conclusions: Delaminated rotator cuff tears showed shorter remnant tendon length and higher muscle atrophy that correlate to a negative prognosis. These prognostic effects should be considered during delaminated rotator cuff tear treatment.

• Journal of the Korean Society of Costume
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• v.62 no.7
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• pp.133-149
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• 2012

Jikji, Memory of the World of UNESCO, the world's oldest extant movable metal print book, is a cultural heritage to give motivation for IT power of Korea. Although the cultural value of Jikji is understood in Korea, the value of cultural assets is not satisfactory and the commercialization is not sufficient. Furthermore, most Jikji product designs on the market are simple and limited mainly for the old generation. The purpose of this study is to design fashion-cultural products suitable for young people who will be responsible for this cultural inheritance. The methods of this study were to make the design development through literature research and a case study for Jikji products on the market. For developing the products suitable for young people, 308 university students in Chungju were surveyed. To express end products, computer graphic program, Illustrator CS5, was used. The results of this study showed that the products on the market were not targeted for use by young people. The younger generations want modern and interesting design. Among the 8 design motives that are planned for design development, the most preferred motive numbers, 3, 7, and 8, were used. Design items, such as scarf, wallet and t-shirts, were selected by the result of survey and 3 scarves, 4 wallets, 3 t-shirts, a total of 30 items were developed. The designed products in this study can inform the cultural resource of Korea and contribute to raise the cultural value if they are commercialized.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.133-140
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• 2018

This study aims to examine the effect of discrimination experience on job satisfaction among working women with disabilities, focusing on meditating effect of self-esteem. To this end, the data from the 8th year of the employment panel of disabled population surveyed by the EDI; Korea Employment Agency for the Disabled was used for the study. The data collected from 549 working women of disabilities from EDI was analysed by using the path analysis. The findings are as follows: first, discrimination experience of working women with disabilities had a significantly negative effect of their job satisfaction. Second, self-esteem presented the mediating effect between discrimination experience and job satisfaction. Based on the results, this study proposed various programs to increase job satisfaction by enhancing self-esteem in situations where the experience of discrimination among women with disabilities is high and suggested practical implications to increase job satisfaction of working women with disabilities.

• Journal of Convergence for Information Technology
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• v.10 no.8
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• pp.68-76
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• 2020

The purpose of this study was to find out a correlation about the knowledge of blood donation, attitude and altruism to nursing students, to use as basic data that can contribute the ways to promote active blood donation practice of nursing college students. Data were collected from 133 nursing students from June 4 to 15, 2020. Data analysis included t-test, ANOVA, and Pearson's correlation coefficients using the SPSS. As a result of the study, the knowledge of nursing students average level was 10.83, the average degree of attitude was 3.15, and the average degree of altruism was 3.57. As a result of analyzing the correlation between variable factors, the blood donation attitude and altruism(r=.447 p<.001) showed significantly positive correlation. The results of this study show that in order to increase the participation of blood donation to nursing students, voluntary participation through voluntary activities is main factor to increases voluntary participation, and it is necessary to change the blood donation attitude and perception of college students according to the current situation in which blood supply and demand is insufficient due to COVID 19.

• Journal of Convergence for Information Technology
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• v.10 no.3
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• pp.38-47
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• 2020

This study is designed as a one group pretest-posttest design the practice to investigate the effects of convergence cadaver practice on nursing professionalism and major satisfaction of nursing students. The participants were 133 nursing students who were in the anatomy course of M college from October 1 to October 30, 2018. The nursing professionalism resulted in changes from 3.50±.87 before the convergence cadaver practice to 3.44±.98 (t=.98, p<.330) after the convergence cadaver practice, and major satisfaction changed from 3.83±.81 before the convergence cadaver practice to 3.91±.78 (t=-.95, p<.345) after the convergence cadaver practice. The correlation between nursing professionalism and major satisfaction showed a positive correlation (r=.54, p>.001). Partial results of sub-areas showed increase, however, future studies that aim to develop and investigate the effects of specific convergence education program which includes cadaver practice to enhance qualitative structure of specialized foundation knowledge are needed.