• 한국습지학회지
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• 제24권4호
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• pp.288-300
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• 2022

산업화와 도시화가 광범위하게 진행되면서 온실가스 배출로 인하여 기후변화가 심해지고 있다. 우리나라는 기후변화로 인하여 평균기온이 상승하였으며, 연간 강수량도 증가하였다. 이러한 기후변화로 태양의 움직임에 맞춰 계절을 표현하는 절기의 의미도 무색해지고 있다. 따라서 본 연구에서는 제주권을 제외한 5개의 권역(수도권, 경상권, 충청권, 전라권, 강원권)을 대상으로 과거 관측자료 및 미래 대표농도경로(Representative Concentration Pathways, RCP) 기후변화 시나리오의 평균 온도 및 강수량 자료를 이용하여 계절 및 절기의 특성 변화를 비교·분석하였다. 계절길이를 분석한 결과, 전국적으로 여름의 길이가 길어지고 겨울의 길이가 짧아졌으며, 여름철 강수량은 대체적으로 증가하였다. 충청권의 경우, RCP 8.5 시나리오에서는 과거에 비해 여름의 길이는 46%, 강수량은 16.2% 증가하였으며, 겨울의 길이는 31.8% 감소하였다. 절기의 경우, 모든 절기에서 기온이 상승하였다. 특히, 충청권의 경우, RCP 8.5 시나리오에서는 과거에 비해 대서의 기온은 15.5%, 대한의 기온은 75.7% 증가하였다. 본 연구 결과를 통해 계절과 절기의 수문학적인 특성을 권역별로 파악할 수 있었으며, 이는 우리나라 기후변화 대응정책을 마련하는데 기초자료로 사용될 수 있다.

• 디지털융복합연구
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• 제18권10호
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• pp.33-39
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• 2020

대형 교통사고는 많은 인명피해를 동반한다. 교통사고를 효율적으로 대처하기 위해선 하루 동안 발생할 수 있는 최대 교통사고 수와 사망자 수, 중상자 수가 정량적으로 제시되어야 한다. 본 연구는 교통사고분석시스템에서 제공하는 2005년부터 2018년까지 전국에서 발생한 일 최대 교통사고 수, 사망자 수, 중상자 수 자료를 사용하여 15년, 30년, 50년에 한 번 발생할 수 있는 최대값을 제시하고자 한다. 지역별 교통사고의 특성을 살펴보기 위해 수도권, 충청권, 경북권, 호남권, 경남권으로 구분하여 일반화극단치분포(GEV분포)에 적합시켰다. GEV분포의 모수는 L-적률추정법으로 추정하였고, Anderson Darling 검정과 Cramer-von Mises 검정으로 분포의 적합성을 확인하였다. 분석결과 50년에 한 번 발생할 수 있는 일 최대 교통사고 수는 수도권 401건, 경남권 168건, 경북권 455건, 충청권 136건, 호남권 205건이다. 인구수와 자동차 등록수가 많은 수도권에 비해 경북권은 면적이 넓고 산지지형이 많으며 산업공단으로 인한 물류이동이 많아 교통사고 수가 상대적으로 높게 나타났다.

• 치위생과학회지
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• 제10권4호
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• pp.279-286
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• 2010

본 연구에서는 충청지역 치과종사자의 근골격계 질환 자각증상과 사회심리적 특성과의 관련성을 분석하기 위하여 2009년 3월 9일부터 3월 28일까지 충청도에 소재한 치과종사자 206명을 대상으로 자기기입식 설문법을 실시하였으며, SPSS WIN 12.0 프로그램을 이용하여 분석한 결과 다음과 같은 결론을 얻었다. 1. 측정부위별 근골격계 질환 자각증상 정도는 신체부위 모두에서 상의 비율이 가장 높았다. 2. 성별에 따라 여자가 남자보다 근골격계 질환 관심도가 높았으며(p=.000), 연령별로는 26-30세 이하가 관심도가 가장 높아 통계적으로 유의하였다(p=.000). 3. 업무만족은 요부군과 하지군에서 양(+)의 상관관계를 나타냈고, 업무스트레스에 있어서는 요부군과 하지군에서 약한 음(-)의 상관관계를 보였다. 동료만족에서는 상지군과 하지군에서 양(+)의 상관관계를 나타냈고, 병원만족은 상지군과 요부군, 하지군에서 양의 상관관계를 나타냈다. 근무환경과 만족에서는 목군과 어깨군, 상지군, 하지군과 양(+)의 상관관계를 보였다. 본 연구에서 각 신체부위에서 사회심리적 특성과 근골격계 자각증상이 유의한 관련성이 있는 것으로 나타났으며, 근골격계 질환 예방 및 관리 프로그램을 개발할 때는 사회심리적 특성을 고려해야 할 것으로 생각된다.

• 한국항공운항학회지
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• 제32권1호
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• pp.71-78
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• 2024

In this study, we reviewed access transportation, operating companies, and airport infrastructure to revitalize Cheongju International Airport. Regarding access transportation infrastructure, it is necessary to promote a railway network connecting the metropolitan inland line and the central inland region. In addition, active administrative support from local governments is required to ensure smooth progress in railway and highway infrastructure linkage projects, such as the Osong Connecting Line and Chungbuk Line, high-speed rail network promotion, and expansion of the Chungbuk Eastern Axis Expressway and Central Expressway. Regarding operator access infrastructure, continuous efforts are required to add and attract airlines based at Cheongju International Airport. Regarding airport infrastructure, the Cheongju International Airport runway needs complete resurfacing due to its deterioration. Domestic passenger capacity has exceeded 6.5%, and considering the increase in import and export of high value-added goods in the North Chungcheong region, it is necessary to build and expand passenger terminals and cargo terminals. Cheongju International Airport's runway does not have enough runway length to operate large and ultra-large aircraft, so if it is extended from the existing 2,744m to 456m to 3,200m, several benefits can be expected in terms of revitalizing Cheongju Airport, such as route expansion.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 C
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• pp.1784-1786
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• 2004

PD(Partial Discharge) signal emitted from PD sources has their intrinsic features in the region of time and frequency. STFT(Short Time Fourier Transform) shows time-frequency distribution at the same time. 2-Dimensional matrices(33${\times}$77) from STFT for PD pulse signals are a good feature vectors and can be decreased in dimension by wavelet 2D data compression technique. Decreased feature vectors(13${\times}$24) were used as inputs of Back-propagation ANN(Artificial Neural Network) for discrimination of Multi-PD sources(air discharge sources(3), surface discharge(1)). They are a good feature vectors for discriminating Multi-PD sources.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.1471_1472
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• 2009

In a wide variety of high-voltage applications surface flashover plays major role in the system's performance and yet has not been studied in great detail for vacuum conditions with modern diagnostic tools. surface flashover for both direct current and pulsed voltages in considered. within the setup, parameters such as geometry, material characteristics of the applied voltage can be altered. This paper review surface flashover of insulator, primarily in vacuum. It discusses theories and models relating to surface flashover and experimental results. surface flashover of insulators in vacuum generally is initiated by the emission of electrons from the cathode triple junction point (the region where the electrode, insulator, vacuum). the electrode material was copper, and a AC voltage was applied between the electrodes. these results were compared with the surface flashover characteristic of insulator at results, surface flashover influenced only insulator surface condition. and increasing vacuum pressure was risen breakdown voltage.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1871-1873
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• 2002

Partial Discharge is radiated in the form of electromagnetic wave from variable sources. It can be taken by UHF antenna and the signal pulse from that has a nonstationary time-series which can be evaluated with several methods. One of them is STFT(short time fourier transform) processed in frequency region. Statistical results using STFT show the possibility being able to discriminate between several PD sources.

• 한국식생활문화학회지
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• 제39권2호
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• pp.83-95
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• 2024

『Hasimdangga Eumsikbeop』 is the second cookbook discovered in the Honam region. It is believed to have been copied by Hong Ju-song between the late 1800s and early 1900s, and excluding the missing parts, it contains a total of 14 items, including 7 liquor items and 7 general food items. Judging from the proofreading marks, it was not considered a complete creation. However, it was confirmed that the book was not influenced by existing ancient cookbooks from the Seoul-Gyeonggi, Chungcheong, and Yeongnam areas. Therefore, it is highly likely that the book was based on an undiscovered recipe book from an ancient family. It is valuable as a basis for comparative research on regional food culture in the traditional era in that the manufacturing methods, ingredient quantities, and description methods are different from existing cookbooks in many ways and contain unique terminologies and regional dialects.

• 한국의류학회지
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• 제26권1호
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• pp.168-178
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• 2002

This study is aimed at investigating and comparing the differences in the uniform of nurses according to regions and hospital size in Korea. This study takes two large regions as its survey area; one is Seoul, Incheon and Gyeonggi Province, and the other is Daejon and Chungcheong Province. The hospital size is divided into general hospitals and neighborhood hospitals. The survey was conducted among the nurses working in 12 randomly-selected hospitals and its statistical results are analysed firm 818 respondents'questionnaires. The results are divided into 3 categories as follows; 1) Results of analysis of survey on the uniform of nurses : Nurses usually wear two-piece suits and more than half of the hospitals choose a white-color pattern. And the nurse's uniform with color varying according to their position and ward is considered to be desirable; 2) Analysis on regional differences : In the case of Daejon and Chungcheong Province, there is a relatively high ratio of respondents who answered questions with 'high percentage of young nurses', 'position differentiation by means of different design and fabric according to ward'. In case of Seoul, Incheon and Gyeonggi Province, questions with 'use of a patterned textile in nurses'uniform', 'ready-made size system'are higher; 3) Analysis of the differences in accordance with hospital size : In the case of general hospitals, there is relatively a high ratio of respondents who answered questions with 'use of different design and fabric according to a nurse's position', 'use of patterns in nurses'uniform'. In the case of neighborhood hospitals, there is a high ratio of respondents with'use of classical one-piece or two-piece type wear', 'ready-made type size system', 'obligatory use off nurse's cap'.

• 한국농공학회논문집
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• 제64권6호
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• pp.101-112
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• 2022

Extreme precipitation events have recently become a leading cause of disasters. Thus, investigating the variability and trends of extreme precipitation is crucial to mitigate the increasing impact of such events. Spatial distribution and temporal trends in annual precipitation and four extreme precipitation indices of duration (CWD), frequency (R10 mm), intensity (Rx1day), and percentile-based threshold (R95pTOT) were analyzed using the daily precipitation data of 10 observation stations in Chungcheong province during 1974-2020. The precipitation at all observation stations, except the Boryeong station, showed nonsignificant increasing trends at 95% confidence level (CL) and increasing magnitudes from the west to east regions. The high variability in mean annual precipitation was more pronounced around the northeast and northwest regions. Similarly, there were moderate to high patterns in extreme precipitation indices around the northeast region. However, the precipitation indices of duration and frequency consistently increased from the west to east regions, while those of intensity and percentile-based threshold increased from the south to east regions. Nonsignificant increasing trends dominated in CWD, R10 mm, and Rx1day at all stations, except for R10 mm at Boeun station and Rx1day at Cheongju and Jecheon stations, which showed a significantly increasing trend. The spatial distribution of trend magnitude shows that R10 mm increased from the west to east regions. Furthermore, variations in precipitation were very strongly correlated (99% CL) with R10 mm, Rx1day, and R95pTOT at all stations, except with wR10 mm at Cheongju station, which was strongly correlated with a 95% CL.