• 농촌계획
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• 제13권3호
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• pp.123-133
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• 2007

The purpose of this study is to develop the landscape resource assessment system(LRAS) to help evaluate the value of landscape resources(Jeju Island's Stonewall fencing farming land) for the introduction of direct payment system of the landscape preservation objectively and to applicate the model in the fields. Delphi survey on Jeju's stonewall experts shows that the order of priority among value evaluation elements on Jeju's stonewall is its harmony with surroundings(34%), the preservation of its original state(34%) and its density and scale(32%). Evaluation system development of landscape resources(Jeju's stonewall fencing filming land) and field observation survey utilizing it consists of the following five steps. Step 1 includes the first Delphi survey on Jeju's stonewall experts to decide its value evaluation elements and their priority. Step 2 is the second Delphi survey on Jeju's stonewall experts to grade pictures of landscape resources(Jeju's stonewall fencing farming land) on the basis of expert-proposed value evaluation standards. Step 3 consists of analysis work using the result of Delphi survey on experts. Step 4 is to select five grade standard pictures according to each of three grading elements of A, B, C belonging to each of the three standards. Then, it is necessary to make panels including five A-grade pictures, five B-grade pictures and five C-grade pictures according to each of the three elements of density, harmony, and original state preservation. Step 5 consists of field observation survey. According to the result of few experts' value evaluation of stonewall fencing farming land with the aid of NRAS developed in this research, the area of Pyeongdae-ri is ranked first, and then the area of Bukcheon-ri, Chocheon-up, the area of Gwakgi-ri, Ewol-up, the area of Shinum-ri, Ewol-up and the area of Yongsu-ri, hankyung-Myun are ranked in the order named. When those areas are graded, A Grade Areas includes the areas of Pyeongdae-ri, the area of Bukcheon-ri, the area of Gwakgi-ri, B Grade Areas consist of the area of Shinum-ri and the area of Yongsu-ri, and the areas of Onpyeong, wimi and youngrak belong to C Grade Area.

• Korean Chemical Engineering Research
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• 제58권3호
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• pp.493-497
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• 2020

Hazardous area classification is designed to prevent chemical plant explosions in advance. Generally, the duration of the explosive atmosphere is used for zone type classification. Herein, IEC code, a quantitative zone type classification methodology, was used to achieve Zone 2 NE, which indicates a practical non-explosion condition. This study analyzed the operating pressure of a vessel handling propane to achieve Zone 2 NE by applying the IEC code via MATLAB. The resulting zone type and hazardous area grades were compared with the results from other design standards, namely API and EI codes. According to the IEC code, the operating pressure of vessels handling propane should be between 101325-116560.59 Pa. In contrast, the zone type classification criteria used by API and EI codes are abstract. Therefore, since these codes could interpret excessively explosive atmospheres, care is required while using them for hazardous area classification design.

• 한국농촌건축학회논문집
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• 제10권3호
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• pp.19-26
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• 2008

The purpose of this study is to clarify the actual condition of external space general high schools newly established or planned in Gyeongnam from 2001 starting the 7th curriculum to 2006. The results of analysis about site plan type, composition state of external space and area ratio of its composition of each high school facilities are as follows: 1) In facilities arrangement of high schools, it shows diverse forms of arrangement from existing uniform straight type, however, most of schools do not being against the simple in their external space. 2) Comparing to traditional high school facilities, it occurs various types of plane and the area is somewhat expanded in the school with same class size, however, it needs to improve facility standards in its reality to deal with the change of future educational environment actively.

• 한국학교보건학회지
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• 제26권3호
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• pp.133-143
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• 2013

Purpose: The purpose of this study is to provide basic data for a more reasonable health teacher placement policy sending teachers to more appropriate sites, by analyzing the change process of the health teacher placement standards and the problems caused by an unreasonable placement policy. Methods: This study mainly analyzed relevant research data and existing studies focusing on a literature analysis. Results: To date, the placement policy for health teachers has changed, going through expansion, reduction, and retrogression, since its establishment. The standard, placing health teachers only in elementary schools with more than 18 classes, was created in 1952. Despite the expansion of the role of health teachers and the revision of the school health law in 2007, this standard has been applied to date without modification. In the meantime, there have been many problems caused by inappropriate placement of health teachers. It was difficult for health teachers in large schools to carry out proper health education; and, in many schools, passive health management, such as first aid, health tests, and student health management, was mainly executed rather than active health management. Students in small schools were not even given an opportunity to receive health education and health management owing to the absence of health teachers. Also, compared to teachers teaching other subjects, health teachers have had very unfair placement standards. Conclusion: The placement policy for health teachers, which has been applied to the present, has never reflected social change, the increase of student health issues, and the demand from the school area. Although the role of health teachers expanded with the execution of health education, the current placement standards for health teachers are very unreasonable. Accordingly, it is necessary to review the health teacher placement policy in a reasonable manner and to revise the standards considering the reality.

• 한국진공학회지
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• 제16권6호
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• pp.397-404
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• 2007

국제표준화기구 (International Organization for Standardization, ISO)의 기술위원회의 하나인 ISO/TC 112 (진공기술위원회)에서는 진공펌프, 진공장치, 진공부품 분야의 진공기술의 표준화를 하고 있다. 본 논문에서는 국제표준화기구에 대한 간략한 소개와 함께 진공기술위원회 ISO/TC 112의 조직과 표준화 규격제정절차나 방법 등을 요약하였으며, 또한 국내에서 최근에 제안한 "열음극 진공게이지 사양"과 "진공밸브시험절차" 핵심내용도 간략히 소개하였다. 국제표준화에 대한이해를 돕고 최근 상황을 소개함으로서 한국에서 더 활발히 진공기술이 발전하고 국제표준화를 선도하는데 도움이 되고자 한다.

• Progress in Superconductivity
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• 제8권2호
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• pp.164-168
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• 2007

We developed a SQUID magnetometer based on Double Relaxation Oscillation SQUID(DROS) for measuring magnetocardiography(MCG). Since DROS provides a 10 times larger flux-to-voltage transfer coefficient than the conventional DC-SQUID, simple flux-locked loop electronics could be used for SQUID operation. Especially, we adopted an external feedback to eliminate the magnetic coupling with adjacent channels. When the DROS magnetometer was operated inside a magnetically shielded room, average magnetic field noise was about 5 $fT/^{\surd}Hz$ at 100 Hz. Using the DROS magnetometer, we constructed a multichannel MCG system. The system consisted of 61 magnetometers are arranged in a hexagonal structure and measures a vertical magnetic-field component to the chest surface. The distance between adjacent channels is 26 mm and the magnetometers cover a circular area with a diameter of 208 mm. We recorded the MCG signals with this system and confirmed the magnetic field distribution and the myocardinal current distribution.

• 한국환경생태학회지
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• 제23권4호
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• pp.309-316
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• 2009

휴양지역의 평가기준 설정을 위한 다양한 시각매체의 활용가능성에 대한 관심이 높다. 그러나 기준평가를 위한 시각 매체의 유용성은 시각매체가 얼마나 정확하게 현장 상태를 반영하는가에 달려있다. 본 연구는 정적 이미지와 동적 이미지를 이용하여 산정된 조우기준을 비교함으로써 움직임의 효과를 평가하였다. 연구대상지는 무등산도립공원 내 중머리 지역이었다. 총 50명의 대학생이 실험실 조사에 참여하였으며 Photoshop과 Flash 컴퓨터 프로그램을 이용하여 제작된 정적이미지와 동적 이미지의 허용도를 평가하였다. 조사결과, 정적 이미지와 동적 이미지 간에 최대허용수에 차이가 없는 것으로 분석되었으며 전반적 조우규범측정곡선도 거의 동일한 것으로 나타났다. 이미지 노출 순서와 움직이는 사람의 비율에 따른 조우기준도 조사되었다. 그러나 본 지역과 같은 특정 상황에서 조우기준을 개발하기 위하여 정적 이미지 대신 보다 복잡한 방법을 요구하는 동적 이미지를 이용함으로써 얻는 이점은 없다고 판단된다. 보다 정교한 매체이용에 따른 장단점에 대하여 토의하였으며 다른 자원환경 평가에 움직임 또는 소리와 같은 요소들이 조우규범에 미치는 영향에 대한 보다 많은 연구가 요구된다.

• 말소리와 음성과학
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• 제6권2호
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• pp.89-96
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• 2014

This study measured speech intelligibility in relation to the vowel space area and the perception of the listener through acoustic analysis of children who had received cochlear implants. It also provided basic data in the evaluation of speech intelligibility by analyzing the correlation between the vowel space area and speech intelligibility. As a research method, the vowel space area was analyzed by obtaining the value of $F_1$, $F_2$ in children three years after receiving cochlear implants, and compared them to normal children by measuring speech intelligibility through interval scaling. A product-moment correlation analysis was conducted to investigate the correlation. Results showed that the vowel space area of the children who had received cochlear implants was significantly different from that of the normal children, though their speech intelligibility showed similar points to those of the normal children. The results of the correlation analysis on the vowel space area and speech intelligibility showed no significant correlation. Therefore, the period of improving intelligibility after receiving cochlear implants and the objective standards of the vowel space area could be established. In addition, the acoustic rating was required to increase the accuracy of the objective measurement in the evaluation of speech intelligibility.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제25권1호
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• pp.41-49
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• 2019

Purpose: After Mers breakout in 2015, major hospital in Korea have been renovated the emergency department to make a separate infection control zone for high-risk patient with potential infection and to improve a triage area and an entrance area for efficient patient evaluation. However, there are no specific design standards to reinforce infection control for patients and staffs safety. Therefore, it is important to establish of initial design factors in the triage and entrance area as a guideline. Methods: 5 cases which had been recently renovated are selected to analyze patient circulation and spatial composition in a triage area and an entrance area. The partial floor plans of each case are represented as bubble diagrams to help understanding of different patient circulation flows. Based on this analysis, significant design factors which should be considered in planning stage for infection control have been extracted. Results: 13 design factors are established. Using these design factors, patient circulation diagram is generated to provide an optimized suggestion for efficient infection control. Implications: This suggestion provides basic databases to start to establish design guideline in the triage area and the entrance area to minimize infection spreading in the emergency department.

• 비파괴검사학회지
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• 제32권2호
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• pp.162-169
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• 2012

본 논문은 초음파 적외선 열화상과 위상잠금 방법을 이용하여 이종금속용접(STS304 and SA106 Gr. b)된 파이프의 응력부식균열 결함을 검출하였다. 초음파 가진장치는 출력 250 Watt, 주파수 20 kHz이었다. 실험 결과 이종금속용접부의 파이프 내부에 위치한 균열을 적외선 열화상을 이용하여 검출할 수 있었다. 실제 PT검사를 통하여 배관 내부의 균열이 하나가 아닌 일정한 범위 안에 하나 이상의 크랙이 존재하여 열화상 이미지 상에 넓은 범위의 hot spot 이미지를 만들어 냈음을 파악할 수 있었다. 또한 기존 기술로 검출이 용이하지 못한 마이크로 폭의 미세균열을 검출할 수 있었다. 또한, 초음파탐상기술은 $10\;{\mu}m$ 미세크랙의 폭을 갖은 균열을 쉽게 검출하지 못하였다. 그러나 초음파 적외선 열화상 기술은 결함 검출하였다.