• 한국기후변화학회지
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• 제6권2호
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• pp.159-166
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• 2015

The way to respond to climate change is divided into mitigation and adaptation. So far, the response of climate change has been focused on mitigation. The perception of response of climate change also has been focused on mitigation. However, climate change mitigation and adaptation should be highlighted in a comparable concept as a response to climate change. On the other hand, perception of the public on climate change affects the support or opposition of the general public about climate change-related policies. The purpose of this study is to assess awareness of the general public and stakeholders on the subject of climate change adaptation and to present a basis for a future national climate change adaptation policy. Questionnaire on awareness of climate change adaptation were composed of the climate change and climate change response (mitigation, adaptation) understanding and importance, the seriousness of climate change-related adverse climate event, the need for climate change adaptation measures, the degree of implementation, and the level of government effort for climate change response. Climate change adaptation-related awareness survey was conducted for the general public 1,011 people and stakeholders 101 people by telephone interviews. In this study, the perception survey has a difference in aspect of the contents and methodology. And We were able to present the three characteristics of the general public and stakeholders aware of the subject of climate change adaptation. First, the relative importance of climate change adaptation was relatively low. Second level of awareness about climate change response of the public was significantly lower than the stakeholders. Finally, the need to prepare the implementation of the sectoral level, the first adaptation measures was relatively low.

• 한국산업보건학회지
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• 제26권4호
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• pp.426-435
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• 2016

Objectives: The major objective of this study was to analyze stress response after a change to consecutive day shifts from day and night shifts in a motor assembly factory. Methods: Using a survey conducted by a labor union, we collected data on stress response index(SRI), lifestyle factors, work-family conflict and job stress before and after a shift system change. We analyzed the transition on the SRI among 222 workers. The cut-off point for the SRI was a T-score over 60. Results: The high risk stress response group was 20.3% of the population before the shift system change. After the shift system change it decreased to 11.3%. After the shift system change, social support improved, leisure time became more sufficient, work-family conflict declined, and sleep quality in the night shift week improved. In multivariable linear regression, among workers under 40 years old sleep quality on night shift, leisure time sufficiency, social support and work-family conflict contributed to the improvement of stress response. Among workers over 40, work-family conflict contributed to the improvement of stress response. Conclusions: The change to consecutive day shifts improved stress response and mediated with improved nighttime sleep, decreased work-family conflict, increased leisure time and improved work-family conflict.

• 자동차안전학회지
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• 제15권3호
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• pp.17-26
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• 2023

This paper presents extended state feedback control based on impulse response for lane change of autonomous driving vehicle. The triple characteristic root of path tracking system and longitudinal velocity determine feedback gains. We suggest a resemblance of impulse response curve of the system and lane change trajectory of the vehicle. The root affects the duration of lane change and lateral acceleration. The effect of limited lateral acceleration and saturation of steering angle will be analyzed and discussed. Finally, simulation results will show the trajectory of lane change based on impulse response under limitation of lateral acceleration.

• 한국콘텐츠학회논문지
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• 제18권2호
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• pp.334-343
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• 2018

본 연구에서는 유아의 기후변화 대응 지식 및 문제해결 능력의 전반적 경향을 살펴보고, 유아의 성별 및 연령에 따라 기후변화 대응 지식과 문제해결 능력에 차이가 있는지를 알아보고자 하였다. 이를 위해 서울 및 경기지역 어린이집에 재원 중인 만 5세 및 6세 유아 129명을 연구대상으로 선정하였다. 기후변화 대응 지식을 측정하기 위해 환경보존 지식 검사도구를 수정해 10문항을 사용하였고, 기후변화 대응 문제해결 능력을 측정하기 위해 안전문제해결능력 검사 문항을 기후변화 대응능력과 관련된 내용으로 수정하여 5가지 문제해결 상황을 사용하였다. 수집된 자료는 평균과 표준편차, 이원변량분석, 피어슨의 적률상관계수를 사용하여 분석하였다. 그 결과, 만 6세 유아의 기후변화 대응 지식과 기후변화 대응 문제해결 능력은 만 5세 유아에 비해 더 높았으나, 성별에 따른 차이는 나타나지 않았다. 또한 유아의 기후변화 대응 지식수준이 높을수록 기후변화 대응 문제해결 능력도 높은 것으로 나타났다. 이 연구의 결과는 유아의 기후변화 대응지식과 문제해결 능력 간 관련성을 확인시켜주었으며, 기후변화 대응 지식과 문제해결 능력 향상을 위한 보다 체계적인 교육과정이 유아들에게 제공될 필요가 있음을 보여주었다.

• 한국환경농학회지
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• 제28권4호
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• pp.468-471
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• 2009

This study was conducted to determine the phototactic response of Paratlanticus ussuriensis to different wavelength of light by the use of LEDs and to provide a basic information for developing an improved trap with the longer trapping efficiency to control environment-friendly this katydid. P. ussuriensis were attracted to the single LED light source, especially, blue and white. For the multiple LED light sources, the movement of P. ussuriensis was not significantly different among LED-light bands. Overall, P. ussuriensis had a tendency to move to light source although they were not attracted to a specific wavelength of light. These methods may be used as information for conducting a phototactic response of other insects.

• 정보관리학회지
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• 제28권3호
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• pp.335-353
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• 2011

본 연구에서는 리커트 5점 척도 설문에 참여했던 응답자들이 특정 자극에 의해 동일한 2차 설문이 주어졌을 때, 본인의 처음 응답결과를 어떻게, 어떤 방향으로 바꾸는지를 측정하고자 하였다. 이를 위해 3개 설문지의 1차, 2차 또는 3차에 걸친 재설문 결과들을 집단간 차이, 자극의 종류, 설문목적의 차이, 응답변화의 방향 및 변화정도의 관점에서 분석하였다. 본 연구를 통해 발견된 연구결과는 다음과 같다. 첫째, 전문가 집단과 일반 집단 중 전문가 집단이 상대적으로 의견을 바꾸지 않는 것으로 유의하게 검증되었다. 둘째, 설문목적에 따른 차이는 없는 것으로 조사되었고, 자극의 종류 중 시스템 사용경험보다는 다른 사람들의 의견이 정보로 주어졌을 때 더 많은 영향을 받는 것으로 나타났다. 셋째, 최초응답에서 긍정적인 답변에 응답했을수록 답변을 바꾸지 않는 것으로 나타났고 부정적인 답변자는 대부분 긍정적인 방향으로 의견을 바꾸는 것으로 유의하게 검증되었다. 넷째, 최초 응답을 바꾸는 경우 응답변화의 폭이 2단계 이상인 경우는 그다지 많지 않고 대부분 1단계 정도 전후로 바꾸는 경향이 있는 것으로 분석되었다. 마지막으로 중간응답자가 의견을 가장 많이 바꾸고 양극단의 경우 의견을 잘 바꾸지 않을 것이라는 예측을 하였으나 부정적인 답변자일수록 의견을 긍정적인 방향으로 바꾸는 것으로 분석되었다.

• 대한기계학회논문집A
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• 제34권9호
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• pp.1193-1199
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• 2010

점용접은 자동차 산업에서 차체 구조물의 대표적 접합방법으로서 차량에 피로하중이 작용할 경우 구조물 전체의 파손 발생이전에 점용접부 일부에 조기 피로파손의 발생가능성이 존재한다. 이러한 점용접부의 국부적 파손은 차량 구조물의 동적 반응 및 이에 따른 피로거동의 변화를 야기할 가능성이 존재한다. 따라서 차량과 같이 스펙트럼하중을 받는 구조물의 피로수명 평가를 위해서는 이러한 점용접부의 국부적 파손에 의한 동적 반응의 변화를 고려하여야 한다. 본 논문에서는 점용접부의 누적피로손상으로 인한 동적반응의 변화를 고려한 진동피로해석을 수행하였다. 이에 필요한 S-N 선도는 전단 점용접 시험편에 대한 일정진폭 피로시험을 통하여 획득하였다. 또한 스펙트럼하중하의 점용접부의 피로수명은 유한요소해석에 기반한 진동피로해석을 통하여 평가하였다.

• 전기학회논문지
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• 제57권7호
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• pp.1195-1199
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• 2008

In this paper, peak detector of generator's output voltage and variable gain controller are introduced for a fast dynamic response. The conventional r,m.s, signal detected has inherent time delay, and the dynamic response of generator using conventional PID controller has some problem in sudden load change. In this paper, the peak detector and signal selector with variable gain controller is used to overcome this problem. The main controller can check the voltage state from the peak detector. When a sudden load change, the over-voltage and under-voltage signal from peak detector change the controller's gain and exciter's current reference. The proposed scheme can improve the dynamic response, which is verified from experimental test of 200kW diesel engine-generator.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제21권3호
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• pp.288-297
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• 1999

This study has been carried out in order to measure the thickness of soft-tissue on lateral cephalographs based on body mass index(BMI) and the change in soft-tissue thickness after surgical correction of mandibular protrusion. The control material in cephalometric study comprised students at The Dental College, 38 persons, aged 21~24 years and the patient material comprised 20 women and 12men, aged 19~28 years with mandibular protrusion.The thickness of the soft-tissue based on BMI in control and study groups, the comparison between them, immediate postoperative change in the thickness, 6 months after surgery, ratio of soft-tissue response and correlation was established through various statistical methods. The result were as follows : 1. The groups based on BMI showed significant differences each other as regards the linear measurements. The thickest soft-tissue was measured 13.6mm, 15.47mm, 16.76mm at Ss, the thinnest at G' 6.0mm, 6.7mm, 7.26mm respectively. 2. The differences between control and experimental groups based on BMI showed to be significant. There were no differences at G'. The soft-tissue in prognathic patients was thicker at Ss, Ls and thinner at Li, Ls, Pg', Gn', Me'. Differential gap was greater in overweight groups. 3. The immediate soft-tissue change after surgery showed the increase at Li, Ls, Pg', Gn', Me' except G', Ls in all groups. 4. The postoperative soft-tissue change 6 months after surgery was similar with immediate change. The soft-tissue shows the increase in the thickness at Li, Pg', Gn', Me' and the greatest difference occurred at Li, 1.1mm, 0.98mm, 1.2mm respectively. 5. The patients with lower BMI index showed higher soft-tissue response to bony movement at Pg'. The immediate response ratio was 91%, 87%, 81% in A,B,C groups respectively, the response 6 months after surgery showed 96%, 91%, 84%.

• 한국패류학회지
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• 제30권3호
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• pp.169-175
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• 2014

PAHs (Polycyclic Aromatic Hydrocarbons: PAHs) is the hydrophobic inorganic material composed of carbon and hydrogen that is easily adsorbed biological organisms in the ocean. Bivalves is the indicator of environment monitoring because of reflect growth, physiological response of bivalve followed their habitat environment. The aim of research is understand the change of oysters (Crassostrea gigas) physiological response under exposed PAHs concentration for control, 1, 10 and $100{\mu}g/L$. We investigated induced immune change response for oyster hemocyte and effect of tissue RNA/DNA ratio for mantle, gill and adductor muscle individually. As a result of experiment change of immune response the oyster hemocyte when exposed PAHs showed that viability and adhesion is no significant difference (ANOVA test, p < 0.05). However phagocytosis decreased under the over $10{\mu}g/L$ of PAHs concentration and ROS increased with the increase of PAHs concentration. The change of RNA/DNA ratio is R/D ratio decreased with the increase of PAH concentration in adductor muscle. However gill and mantle showed no change of R/D ratio with PAHs concentration. The oysters when exposed inorganic pollutant that decreased of physiological condition and damaged protein synthesis of adductor muscle.