• 한국유기농업학회지
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• 제29권3호
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• pp.333-358
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• 2021

This study investigates consumers' purchasing behavior and perception of the low-carbon certificated agricultural product. To this end, we surveyed 1,000 consumers and the main findings are as follows. First, Even after six years of national certification, it is important to promote the low-carbon certification system due to insufficient awareness and purchase experience. Second, the certificated area is small at around 5% of the area of environment-friendly agricultural products and GAP certification, and certification is concentrated on fruit trees. Third, an appropriate level of high-priced strategy can be useful considering the cost of low-carbon certification, image management of low-carbon certificated agricultural products, and quality is the most important factor for consumers to consider when purchasing fresh agricultural products. Fourth, consumers recognized that the contribution of low carbon certification in reducing greenhouse gas emissions and preserving the environment was higher than that of environment-friendly agricultural products or GAP certification. Considering that, promotional activities linked to environment-friendly agricultural products and GAP certification may be effective when promoting low-carbon certification. Finally, the Ministry of Agriculture, Food and Rural Affairs is implementing a carbon point system linked to Green Card to revitalize low carbon certification, but 25.7% of consumers are aware of it, and 8.4% have little experience in issuing it.

• 제어로봇시스템학회논문지
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• 제15권5호
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• pp.519-524
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• 2009

This paper describes a new sensor system for 3D environment perception using stereo structured infrared light sources and a camera. Environment and obstacle sensing is the key issue for mobile robot localization and navigation. Laser scanners and infrared scanners cover $180^{\circ}$ and are accurate but too expensive. Those sensors use rotating light beams so that the range measurements are constrained on a plane. 3D measurements are much more useful in many ways for obstacle detection, map building and localization. Stereo vision is very common way of getting the depth information of 3D environment. However, it requires that the correspondence should be clearly identified and it also heavily depends on the light condition of the environment. Instead of using stereo camera, monocular camera and two projected infrared light sources are used in order to reduce the effects of the ambient light while getting 3D depth map. Modeling of the projected light pattern enabled precise estimation of the range. Two successive captures of the image with left and right infrared light projection provide several benefits, which include wider area of depth measurement, higher spatial resolution and the visibility perception.

• 자동차안전학회지
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• 제9권4호
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• pp.32-37
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• 2017

For automated vehicles, the integrity and fault tolerance of environment perception sensor have been an important issue. This paper presents radar, vision, lidar(laser radar) fusion-based fault detection algorithm for autonomous vehicles. In this paper, characteristics of each sensor are shown. And the error of states of moving targets estimated by each sensor is analyzed to present the method to detect fault of environment sensors by characteristic of this error. Each estimation of moving targets isperformed by EKF/IMM method. To guarantee the reliability of fault detection algorithm of environment sensor, various driving data in several types of road is analyzed.

• 한국환경과학회지
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• 제32권6호
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• pp.441-451
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• 2023

This study examines the changes in environmental resource perception and residential areas on Jeju Island. This study focuses on Jeju Island, which has prepared a legal framework for the total amount of environmental resources. The study identifies Jeju residents and non-provincial citizens, analyzes the differences between them, and suggests the future direction of the total amount system for environmental resources. This study aims to provide essential data necessary for successfully implementing the assigned environmental resources. This will contribute to sustainable growth and preserving valuable environmental resources in an era where environmental importance is increasing. The findings indicate that both Jeju residents and non-provincial citizens are satisfied with the current environmental resources on the island. However, when comparing past and current environmental resources, Jeju residents generally indicated lower satisfaction over time, whereas non-provincial citizens perceived an improvement over time. While overall satisfaction with the natural and local environment remains high, there is a notable increase in perception regarding the ecological value of plants, wildlife, wetlands, and Gotjawal areas compared to the past. These findings emphasize the importance of incorporating these high-priority components into the total environmental resource system for future consideration.

• Journal of Advanced Marine Engineering and Technology
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• 제30권8호
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• pp.919-926
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• 2006

To move in unknown or uncertain environment, a mobile robot must collect informations from various sensors and use it to construct a representation of the external world. Ultrasonic sensor can provide range data for this purpose in a simple cost-effective way. However conventional ultrasonic sensor system for a mobile robot are not sufficient for environment recognition because of their large beam opening angle, specular reflection. This paper describe on environmental perception algorithm which can solve these problems in case using ultrasonic sensor. The algorithm consist of two parts. One is to solve beam opening angle problem by fusion from multiple ultrasonic sensors. The other is to cope with specular reflection problem in wall line extract, which is based on Hough Transform. Experiments to verify the validity of the proposed algorithm are carried out, and the results are provided at last part in this paper.

• 한국조리학회지
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• 제20권4호
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• pp.144-156
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• 2014

영양사를 대상으로 학교급식에서 친환경 농산물 사용 확대를 위한 방안 기초자료 제시와 급식의 질과 만족도를 향상시키기 위해 연구 조사하였다. 친환경 우수 농산물 인증에 관한 인지도와 친환경 우수 농산물에 관한 인식간의 요인분석과 Correlation(상관관계분석), 다중회귀분석을 실시하였으며 분석결과는 다음과 같다. 영양사들은 친환경 농산물 인증에 관한 인지도가 그다지 높지 않았으며, 또한 친환경 농산물에 관한 인식과 위험인식은 그다지 높지 않았으나, 친환경 농산물에 관한 지식이 높았으며, 연령과 영양사 경력, 급식인원, 식품비 대비 농산물비로는 별다른 차이를 보이지 않았다. 영양사의 친환경 농산물 인증에 관한 인지도가 높을수록 친환경 농산물에 관한 인지 및 지식이 긍정적인 것으로 나타났으며 친환경농산물 인식은 친환경 우수 농축산물 인증에 관한 인지도에 유의적인 영향을 미치는 것으로 나타났다. 이러한 결과를 통하여 급식의 책임자인 영양사들의 친환경 농산물에 대한 인식을 향상시켜 학교 급식의 질적인 생산성 향상과 급식만족도를 높이도록 하며 학교급식에서의 친환경 농산물 이용도 증가에 따른 영양사뿐만 아니라 학부모의 인식개선도 필요하므로 후속 연구가 필요하다고 사료된다.

• 치위생과학회지
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• 제21권3호
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• pp.158-167
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• 2021

Background: To identify work-family balance and level of happiness among married women dental hygienists in Seoul and Gyeonggi Province. The goal of this study is to use the outcome as basic data to determine the compatibility of dental hygienists with work and family, systems, and improvement of happiness levels. Methods: From July 3 to August 10, 2020, 250 dental hygienists in Seoul and Gyeonggi Province were targeted. The questionnaire comprised 65 questions, including general characteristics (perception of work-family balance, perception of work-family balance system, job satisfaction, parenting type, happiness level) whether or not they were implemented. The results were obtained through a self-control questionnaire. Results: The perception of work-family balance was significantly different in job rank and average income, while that of the work-family balance system had significant differences in workplace type, total work experience, current job work experience, childcare system status, and parental leave period. Happiness level and job satisfaction were significantly different in job rank, average income, and childcare system status. Additionally, the perception of work-family balance and that of the work-family balance system showed a positive correlation with job satisfaction and happiness level. Finally, the perception of married women dental hygienists toward work-family compatibility was determined, where the higher the satisfaction with the job, the higher the level of happiness. Conclusion: To improve the work-family balance and job satisfaction of dental hygienists and their levels of happiness, changes in social perception and improvement of the working environment such as proper staffing, flexible work systems, and incentive systems should be considered.

• 한국항행학회논문지
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• 제23권2호
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• pp.114-124
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• 2019

2016년 1월 다보스포럼에서 발표된 4차 산업혁명에 대한 다양한 기술 적용 분야의 하나로서 무인비행장치인 드론 시장은 미래의 교통체계의 커다란 변화와 관련된 중요한 분야로 급속하게 확대 발전되고 있다. 한국의 경우 드론에 대한 관심은 국가자격증의 폭발적인 수요로 연계되고 있으며 드론조종자 수도 2015년 400여명에서 2018년 기준 17,000여명을 초과하면서 교육환경과 안전의 중요성이 강조되고 있다. 따라서 본 연구에서는 드론교육 현황과 함께 교육환경 평가를 위해 설계된 DREEM(Dundee ready educational environment measure) 모형에 근거하여 조종자의 안전의식을 분석하였다. 연구결과 교육 환경에 대한 만족도가 절차 준수를 포함한 전반적인 안전의식에 영향을 주므로 이에 대한 개선이 요구된다는 결론을 도출하였다.

• 한국지능시스템학회논문지
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• 제23권1호
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• pp.35-45
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• 2013

자동차의 자율주행기능 실현을 위해서는 기존의 지능형자동차 인식시스템 보다 강인하고 우수한 성능의 주행환경 인식시스템이 요구된다. 특히, 카메라와 레이저레이더 센서는 물체의 특징, 거리 등의 정보를 제공하는 대표적인 주행환경인식 센서로, 이를 이용한 단일센서기반 인식시스템 연구가 활발히 이루어지고 있다. 일반적으로 레이저레이더 센서의 거리정보는 도로의 구조, 차량, 보행자 등의 인식을 위하여 많이 사용되며, 카메라의 영상정보는 차선, 횡단보도, 표지판 등의 주행환경 인지에 사용된다. 하지만, 단일센서기반 인식시스템은 센서의 특성 및 주행환경에 의한 오검출 또는 미검출 발생률이 높기 때문에 자율주행기능 구현에 적합하지 않다. 따라서 단일센서기반의 인식시스템의 한계를 극복하기 위하여 카메라, 레이저레이더, GPS 등을 이용한 정보융합 인식시스템 개발이 필수적이다. 이 연구에서는 영상 및 레이저레이더의 정보융합을 통해 강인한 차선인식, 횡단보도 인식 등을 수행하는 자율주행자동차의 주행환경 인식기술을 개발하였다. 이 연구를 통해 개발된 주행환경 인식기술은 자율주행자동차에 적용되어 다양한 주행시험을 통해 신뢰성 및 안정성이 검증되었다.

• The Journal of Asian Finance, Economics and Business
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• 제8권12호
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• pp.371-376
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• 2021

The article analyzes the impact of factors affecting the internal control system of chemical enterprises in Vietnam, providing more empirical evidence on factors affecting the system of internal control. Research data is collected in the form of face-to-face interviews and email interviews with managers and employees working in different positions, managers at all levels, chief accountants, and accountants of 52 chemical enterprises in Vietnam. The survey results collected 310 questionnaires. After eliminating the invalid questionnaires due to many blank cells, the authors chose to use 297 questionnaires. Quantitative research was carried out with SPSS 25 software. Research results show that Business Strategy, Organizational Structure, Organization's perception of the instability of the external environment, and Organizational culture are the factors that positively affect the internal control system of chemical enterprises. This can be explained that, for chemical enterprises, Business strategy, Organizational structure, Organization's perception of the instability of the external environment, and Good organizational culture will positively impact the internal control system of chemical enterprises. Based on the research results, the authors have proposed recommendations to enhance the effectiveness of the internal control system of chemical enterprises in Vietnam, thereby contributing to improving the performance of enterprises in the chemical Vietnamese.