• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.194-196
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• 2022

레이더 안테나에서 송신된 전파가 표적에 맞으면 표적의 전기적 특성, 외형 등에 따라 특정한 형태의 전계가 형성되는데, 이를 RCS 패턴이라 한다. 표적의 RCS를 계산하여 RCS 패턴을 플로팅 하는 다양한 상용 프로그램이 있으며, 군함이나 선박과 같은 큰 표적의 해석을 위해서는 저주파 해석기법 보다는 계산 속도가 빠른 고주파 해석기법이 적용된 프로그램이 적합하다. 고주파 해석 프로그램인 XGTD는 표적의 360도 전 방위에 대한 2차원 RCS 패턴을 빠른 시간에 플로팅 가능하나, 3차원 RCS 패턴은 구할 수 없다. 본 논문에서는 XGTD를 이용하여 다양한 각도에서 표적의 2차원 RCS 패턴을 플로팅하고, 이를 이용하여 3차원 RCS 패턴을 생성한 후 3차원 안테나 패턴 파일로 변환하여 활용하는 방안을 제안하였다.

• 한국안전학회지
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• 제39권1호
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• pp.62-69
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• 2024

Ensuring swift on-site access to fire engines is crucial in preserving the golden time and minimizing damage. However, various mobility constraints in alleyways hinder the timely entry of fire engines to the fire scene, significantly impairing their initial response capabilities. Therefore, this study analyzed the significant mobility constraints of fire engines, focusing on Seoul, which has many old town areas. By leveraging survey responses from firefighting experts and actual observations, this study quantitatively assessed the frequency and severity of mobility constraint factors affecting the disaster responses of fire engines. Survey results revealed a consistent set of top five factors regarding the frequency and disturbance level, including illegally parked cars, narrow paths, motorcycles, poles, and awnings/banners. A comparison with actual road-view images showed notable consistency between the survey and observational results regarding the appearance frequency of mobility constraint factors in vulnerable areas in Seoul. Furthermore, the study emphasized the importance of tailored management strategies for each mobility constraint factor, considering its characteristics, such as dynamic or static. The findings of this study can serve as foundational data for creating more detailed fire safety maps and advancing technologies that monitor the mobility of fire engines through efficient vision-based inference using CCTVs in the future.

• 한국지리정보학회지
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• 제13권2호
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• pp.94-106
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• 2010

해양온도차에너지(Ocean Thermal Energy : OTE) 개발을 위해서는 에너지 부존 자원량 파악과 개발적지 선정이 선행되어야 한다. 이를 위해 대상해역의 표층과 심층 간의 수온차이 값(${\Delta}T$)에 대한 연중출현확률의 산정이 필요하다. 본 연구에서는 이러한 ${\Delta}T$의 연중출현확률을 산정하기 위해 남해 해역을 대상으로 빈도분석 방법과 조화분석 방법을 사용하였으며, 두 방법의 장단점을 비교하고자 하였다. 비교를 위한 공간적 규모는 OTE 부존량 산정과 연계된 연구지역 전체의 광역적 규모와 적지선정과 연계된 지역적 규모로 구분하였다. 광역적 규모에서는 두 방법으로 산정된 ${\Delta}T$의 연중출현확률 차이를 공간분포 지도로 제작한 후, 확률차이에 대한 면적을 비교하였다. 지역적인 규모에서는 두 방법 모두 연중 출현확률이 가장 높은 지역에서 서로 간의 확률 차이 뿐 아니라, 확률차이가 가장 큰 지역과 작은 지역에서 두 방법의 격월별 출현확률도 비교하였다. 일차적으로 두 방법의 출현확률이 강한 상관성(피어슨 상관계수 r=0.96, ${\alpha}$=0.05)을 보여 두 방법 모두 유용함을 알 수 있었다. 광역적 규모에서 두 방법의 확률차이가 10% 이상 되는 면적은 전체 면적의 5%이하로 나타났다. 따라서 OTE 부존량 산정 시 두 방법 모두 적용 가능함을 보였다. 하지만 현실적으로 다양한 수온 차 조건으로 계산 가능한 조화분석 방법이 보다 적합한 방법으로 판단되었다. 지역적 규모에서 두 방법에 의한 출현확률이 모두 높은 지역에서는 서로간의 확률차이가 약5%이하로 두 방법의 차이가 뚜렷하지 않았다. 하지만 빈도분석으로는 탐지 가능한 10%이하의 확률을 조화분석은 탐지하지 못하는 단점을 보였다. 따라서 OTE 부존량 산정에는 조화분석 방법이, 개발 적지 선정에는 빈도분석 방법이 장점을 지닌 것으로 분석되었다.

• 한국환경복원기술학회지
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• 제3권1호
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• pp.27-37
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• 2000

This study aims at restoring urban forest destructed and eliminated by industrialization, urbanization, and city development and presenting a direction to manage remaining urban forest ecologically. To this end, an experiment zone where Populus tomentiglandulosa T. Lee were selective cutted and a control zone where Populus tomentiglandulosa T. Lee were kept intact were created in Chongdam Park located in Kangnam-ku, Seoul. Then, the structural changes of herbaceous plant species, the growth of targeted woody plants, and the increase of the number of insect and bird species were examined. The conclusions reached in this study are as follows. First, for the sake of ecological restoration and management of urban forest, it is good to selective cutting. Although timing, frequency, and methods may vary depending on the features and types of urban forest, the study revealed that selective cutting contributes to the restoration speed of origin vegetation and the enhancement of biodiversity including plants and insects. Second, as for the correlations of selective cutting and the appearance of plant species, the growth of origin vegetation, and insect distribution, the study showed that the impact of meteorological environment such as brightness is much greater than that of soil environment. Third, in order to manage urban forest, tramping pressure needs to be controlled efficiently. The efficient control of tramping pressure would contribute in the appearance of herbaceous plants. It would also be beneficial in promoting biodiversity of birds by removing the impact of people using routes. Fourth, in order to enhance the overall biodiversity of urban forest, diverse environment needs to be provided. In particular, it is necessary to supply water that is insufficient in urban forest. Providing habitats such as forest wetland performs an important function to amphibians and birds that require water as well as the appearance of aquatic plants and insects. Therefore, ways to introduce water efficiently should be initiated.

• Asian-Australasian Journal of Animal Sciences
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• 제21권2호
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• pp.198-203
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• 2008

This study was conducted to compare the effects of feeding high protein and low energy milk replacer (HPR; CP 25%, ME 3.6 Mcal/kg DM) with low protein and high energy milk replacer (HPR; CP 21%, ME 4.2 Mcal/kg DM) on feed consumption, body weight (BW) gain, health and selected blood metabolites in Holstein calves during the pre-weaning period. At each feeding, each milk replacer (MR) was prepared by mixing 0.125 kg of dry MR in 1L of warm ($60^{\circ}C$) water. The calves were fed either HPR (n = 10) or HER (n = 10) using mobile plastic bottles fitted with soft rubber nipples. All calves received 1.8L diluted MR at each feeding 3 times daily during the first 4 weeks of age; feeding frequency was reduced to 2 times daily for the next 2 weeks of age and then to once daily during the last week of the experiment. Jugular blood was sampled in calves at day 7, 14, 21, 35 and 49 of age to enumerate selected metabolites. Daily MR, starter and hay intake during the pre-weaning period were similar in calves fed HPR and HER. Consumption of starter, MGH and total DM steadily increased with the age of calves. Final BW, daily BW gain and feed efficiency of calves were not affected by treatments. Serum glucose, cholesterol, creatinine were decreased (p<0.05) and blood urea N was increased (p<0.05) in calves fed HER or HPR as they grew older. Serum glucose, total protein and albumin concentrations in calves were not affected by treatments. Serum GPT and GOT concentrations were higher (p<0.05) in calves on HPR than on HER. Scouring score, days scoured, respiratory score, rectal temperature and general appearance were similar in calves fed HPR and HER. Poor general appearance (dullness and droopy ears) of calves fed either HPR or HER reflected nutritional insufficiency and stress. In conclusion, energy and protein concentrations in MR did not affect feed intake and BW gain in Holstein calves during the pre-weaning period. Poor general appearance and lower BW gain of calves compared to those reported in the literature for milk fed calves prompt a demand for further research to improve the daily nutrient supply to MR-fed calves.

• 한국초지조사료학회지
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• 제3권2호
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• pp.58-66
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• 1983

본(本) 시험(試驗)은 여름철 청예사초(靑刈飼草)로서 이용(利用)이 급증하고 있는 수단그라스계(系) 잡종(雜種) [수수-수단그라스잡종(雜種); Sorghum bicolor (L.) Moench] 중 우리나라에서 생산성(生産性)과 적응성(適應性)이 가장 우수(優秀)하다고 인정된 Pioneer 988을 공시품종(供試品種)으로 하여 질소시비수준(窒素施肥水準)과 예취(刈取)높이가 신지(新枝)(측지(側枝) 및 분얼경(分蘖莖))의 발생(發生), 건물중(乾物重) 및 고사(枯死)에 미치는 영향을 구명(究明)하기 위하여 1981년(年)과 1982년(年) 2년(年)에 걸쳐 서울대(大) 농대(農大) 부속실험목장내 사초시험포(飼草試驗圃)에서 실시(實施)되었으며 결과(結果)를 요약(要約)하면 다음과 같다. 1. 질소시비수준(窒素施肥水準)은 신지(新枝)의 발생(發生)이나 고사(枯死)에 별 영향을 주지 못하였다. 2. 예취후(刈取后) 신지(新枝)에 있어서 예취(刈取)높이가 낮아질록 측지수(側枝數)는 감소하고 분얼경수(分蘖莖數)는 증가하였다. 3. 재새수량(再生收量)에서 측지(側枝)가 차지하는 비율은 작으며 예취(刈取)높이에 관계없이 대부분의 수량(收量)은 분얼경(分蘖莖)이 차지하였다. 4. 신지(新枝)의 고사(枯死)는 예취(刈取)높이가 낮은 구(區)에서 증가하였다.

• 대한간호
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• 제37권2호
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• pp.44-52
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• 1998

The purpose of this study is to inquire the people's views on nursing for nurses, correct the image of nurse and take it as basis to be applied on nursing education examining the image of nursing on Television drama playing important role of mass media. 22 nurses of the characters in drama is applied to the analysis object of this study by selecting 6 dramas of Television ones the nurse play on the prime time from June 1 to August 31 in 1997. Contents analysis method was used in Data Analysis, 4 items was used after Coders previously modify and compensate it based on research documents of 1m Milim(1996) 2 Coders made the Coding the article on each person by them seeing the recorded film making the Coding Paper each items is written by the character. The average of reliability degree was 90% which measured the reliability degree by the mathod of Holsti. The statisic method of frequency, percentage was used SPSS Program in data processing The results were as follows. 1. Relative importance of 86.2% nurses in drama was depicted as extra characters 2. The affair attitude of nurses shown on drama was revealed as mechanical(84.7%), passive(45.5%), dependent(54.4%) unkind(68.2%). 3. The activity of nurses was classified with professional! simple affair. The professional affairs such as I.V., Blood Pressure Check, Rounding, Nursing Recording, Patient Education, Assist of Operation, Assistant meal of Patient, etc is mainly depicted and the screen of simple affair such as Receiving telephone, Carrying Tray or Dragging, Stretcher Car, Dressing Car and or Wheel Chair than professional affair. 4. The appearance feature of nurses was shown on thin physique(68.2%), common stature(68.2), dirty costume(45.4%), common appearance(81.9%), unnoble action(63.6%). The image of nurses is illuminated as the exterial scene of technical affair such as assisting the doctors and affair focused on accident and educational activity of nureses or extended role is nor depicted on Television drama. Therefore, the people regard the nurse as sexual object with good appearance than professional worker working professional nursing We want the following, epigraph based on above conclusion. 1. The continuous research is required on the image of nurse shown on various mass media. 2. The later research is required on appliction strategy of mass media for advancing the image of nurse. 3. The research to strengthen the objectivity by comparing analyzed data on drama & analyzing it is required 4. Through the deep study, the standard to show a concrete and professional work of nurses to scenario writers of TV drama is suggested by the association. 5. The monitoring about the mass media must be activated, not by some nurses, on a national scale and much study on the basis of this is needed.

• 한국초등수학교육학회지
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• 제9권1호
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• pp.65-84
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• 2005

영재교육에 대한 관심이 집중되면서 한국교육개발원을 중심으로 개인 및 집단에 의해 많은 초등 수학 영재 교수-학습 프로그램들이 개발되었다. 그러나 기존에 개발된 프로그램들을 분석한 결과 대상이나 영역, 주제와 내용 등이 특정 영역에 편중되거나 중복되는 문제점이 발견되었다. 본 연구에서는 기존에 개발된 22종(384개 주제)의 초등수학 영재 교수-학습 프로그램을 학습 대상, 제 7차 수학과 교육과정의 영역, Renzulli의 3부 심화학습 단계, 내용의 성격 등으로 구분하여 프로그램의 내용과 각각의 구성 체제를 분석하였다. 분석 결과 개발된 프로그램은 고학년에 비해 저학년을 대상으로 하는 교수-학습 프로그램의 비율이 매우 낮게 나타났고, 도형영역에 집중되어 있는 반면 측정 영역은 가장 적은 빈도수를 나타내고 있다. 또한 프로그램은 Renzulli의 3부 심화학습 단계에 따르지 않고 개발되는 경우가 가장 많았으며, 단계별로는 2부, 3부, 1부 순으로 나타났다. 프로그램의 내용의 성격에 따른 분석결과 주제탐구형이 가장 많았으며, 창의적 문제해결형 교구활용형, 프로젝트형, 퍼즐과 게임형의 순으로 나타났다. 프로그램의 구성 체제면에서는 단원명, 단원의 개관, 학습 목표, 단계별 학습내용, 평가, 읽을거리, 참고자료 등의 항목을 중심으로 개발할 것을 제안하였다.

• 동의생리병리학회지
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• 제26권1호
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• pp.88-97
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• 2012

DSOM(Diagnosis System of Oriental Medicine), questionnaire for oriental medical(medicine) diagnosis is an online survey system containing 152 questions for female, 149 questions for male that asking the basic symtoms of 16 pathogenic factors(病機). The result of DSOM denotes reliability according to the level of major symptoms of each pathogenic factor. Standard level of reliability is equal to all 16 pathogenic factor basically except phlegm(痰). In case of phlegm(痰) we give different weight depending on whether the factor includes gray color under the orbit(痰飮氣) or not. To examine reliability of DSOM, statistical analysis has been done to the data of felmale 10101, male 1564 except for bad responses and stored between 1st April 2000 to 3rd June 2011. Based on the study, the conclusions were as follows. Reliability of DSOM. For female, all pathogenic factors showed over 85% confidence level except for phlegm 82.6%. For male, all pathogenic factors showed more than 90% confidence level except two factors, phlegm(痰) indicates 87.% and damp(濕) indicates 89.8%. HH rates among pathogenic factors were more than 50 points. For female, HH rates of other 14 pathogenic factors were all over 80% except for heat(熱) 78.2% and insufficiency of Yang(陽虛) 75.3%. For male HH rates of all pathogenic factors were more than 80% except HH rates of heat 78.2% and damp 77.8%. Research based on a degree of satisfaction of reliability derived from pathogenic factors with scores of HH results in for all 16 pathogenic factors showed over 85% of relatively high level of satisfaction for both sexes whose reliability standard come under 5~4 points. Comparing appearance frequency of pathogenic factors for both sexes. Male only displays higer than female in heat(熱). Whereas female were higher than male for other 15 pathogenic factors and the difference was biggest in heart(心) and least in insufficiency of Yin(陰虛). Comparing appearance frequency order of pathogenic factors for both sexes. Female outdistanced male in blood stasis(血瘀) coldness(寒) blood-deficiency(血虛) phlegm(痰), while male outdistance female in heat(熱) insufficiency of Yin(陰虛) deficiency of qi(氣虛). Male had lower average of each pathogenic factors than female except heat(熱) as well as deficiency of qi(氣虛).

• 해양환경안전학회지
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• 제27권7호
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• pp.954-966
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• 2021

최근 전세계적으로 해양공간계획을 수립하고 공간활용 측면에서 다양한 용도를 포괄하고, 법제도화를 통해 공간관리를 추진하고 있다. 또한 해양공간에서 발생되는 다양한 활동과 해양공간의 이용 범위와 강도가 확대되고 있는 가운데, 이해관계자 간 갈등 저감과 합리적인 공간관리수단으로써 해양공간계획의 중요성이 증대되고 있다. 이와 더불어 해양공간계획 관련 연구는 양적 성장과 다양한 연구 분야에서 수행되고 있다. 이 연구의 목적은 해양공간계획 관련 연구동향을 탐색하고 최근 10년간 연구주제의 변화와 이슈 키워드를 분석하고자 한다. 연구대상은 2010년부터 2020년까지 해양공간계획을 핵심 주제어로 포함하는 연구문헌을 대상으로 키워드를 분석하였다. 분석방법은 단어출현빈도, 워드 클라우드 등 출현강도를 기반으로 핵심 이슈를 발굴하고, 키워드를 중심으로 토픽과 연계된 5개 키워드를 추출하여 핵심 주제 도출하였다. 연구결과 정책수립 측면에서 정책수준단계(PRL)를 적용하여 원칙개발, 제도화, 정책검증 등 시기별 핵심 주제가 변화를 확인하였다. 국내연구는 의사결정도구로서 연구와 방법적용을 중심으로 수행되고 있으며, 향후 연구의 양적 성장과 질적 다변화를 통해 현재 시행초기의 해양공간계획이 실제 해양공간의 통합적 관리 및 조정 역할이 가능한 제도로의 정착을 기대한다.