• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.981-984
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• 2006

Oil pollution of the ocean is a major environmental problem, especially in its coastal zones. Synthetic aperture radar (SAR) flown on satellites, such as ERS-2 and Envisat, has been proved to be a useful tool in oil spill monitoring due to its wide coverage, day and night, and all-weather capability. The total 120 SAR images containing oil spill over the East China Sea were collected and analyzed, ranging in date from July 23, 2002 to November 11, 2005. After preprocessed, SAR images were segmented by adaptive threshold method. The oil spill images were incorporated into GIS after distinguished from look-like phenomena, finally we presented the oil spills distribution map for the East China Sea. The wide-swath and quick-looks SAR imagery for mapping of oil spill distribution over large marine areas were proved to be useful when full resolution data are not available. After the temporal and spatial distribution of the oil spills were analyzed, we found that most of oil spills were distributed along the main ship routes, which means the illegal discharge by ships, and the occurrence of oil spill detected on SAR images acquired during morning and summer is much higher than during evening and winter.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.570-573
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• 2006

College GIS and remote sensing education usually consists of commercial software packages implementations in the classroom. Computer programming is quite important when college graduates work in private or public sectors relevant with GIS and remote sensing implementations. The objective of this paper was to develop a valley management system which implements GIS and remote sensing as the key components for education. The Valley Authority is entitled with water resource protection for sustainable drinking water supply of the second largest city in Taiwan. The test area consists of three different government agencies, Forest Service, EPA, and Water Resource Agency. Materials were provided by the Valley Authority in ArcGIS file format. MapObjects have made the GIS development process much easier. Remote sensing with image manipulation functions were provided by computer programming with Visual Baisc.NET and Visual C#.NET. Attributes inquiry are performed by these two computer languages as well. ArcGIS and ArcPad are also used for simple GIS manipulations of the test area. Comparison between DIY and commercial GIS can be made by college students. Functions provided by the developed valley management system depending on how many map layers have been used and what types of MapObjects components have been used. Computer programming experience is not essential but can be helpful for a college student. The whole process is a step-by-step sequence which college students can modify to depict their capability in GIS and remote sensing. The development process has gone through one semester, three hours every week in 18 weeks. College students enrolled in this class entitled with GIS showed remarkable progresses both in GIS and remote sensing.

• Safety and Health at Work
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• 제14권4호
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• pp.375-383
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• 2023

Background: Working despite feeling ill - presenteeism - is a widespread behavioral phenomenon. Previous research has shown that presenteeism is influenced by various work-related and personal factors. It's an illness behavior leading to a range of negative but also positive consequences. Due to coronavirus disease 2019 (COVID-19) pandemic, remote work has become the "new normal" for many employees. But so far, little is known about presenteeism in remote work. This study aims to investigate presenteeism in remote work by looking at the extent of remote presenteeism, differences to presenteeism in on-site work, and associated factors. Methods: A nationwide cross-sectional online survey was conducted in Germany with N = 233 participants. Data were analyzed using descriptive statistics, t-tests, and correlation analysis. Results: The results reveal that presenteeism is prevalent in remote work x = 4.13 days (Md = 3; D = 2; s = 4.95). A low ability to detach from work (r = -.17; p = .005) and low supervisor support (r = -.14; p = .02) is associated with more remote presenteeism days. Remote working conditions seem to facilitate presenteeism. Conclusion: This study provides empirical insights into a subject area of great societal relevance. The results show that awareness should be raised for presenteeism in remote work. It should be regarded as a behavior that can be functional or dysfunctional, depending on the individual situation. Supervisor support and detachment should be fostered to help reduce dysfunctional presenteeism. Promotion of health literacy might help remote workers to decide on a health-oriented illness behavior. Further research is vital to analyze to what extent and under which circumstances presenteeism in remote work is (dys)functional and to derive clear recommendations.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.42-43
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• 2005

• Educational Technology International
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• 제14권2호
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• pp.215-228
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• 2013

In engineering education practical experiments is very important for each student, but due to the limitation of time and available resources such as laboratory equipment, space and instructors enough hands-on real experiments could not be provided to all students enrolled in the program throughout the academic year. In this sense web-based remote experiments through internet become a solution for engineering education and an emerging new paradigm for students and teachers. This paper presents the development of the web-based remote vibration experiment system for mechatronics education. Students can access this experimental equipment through an internet and conduct vibration experiment remotely without any restriction on time and place. IP address for data communication and web-service are assigned in local computer and then students receive experimental results and the captured pictures using network. The developed system provides real-time feedback of the tested results. Ubiquitous access to the system gained popularity from students.

• 한국실천공학교육학회논문지
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• 제4권1호
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• pp.65-71
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• 2012

이 연구에서는 LabVIEW와 NI ELVIS를 이용하여 컴퓨터 기반의 공학교육 사례 즉 다양한 컴퓨터 기반의 공학실습을 소개한다. 여러 유명대학이나 연구소, 회사 등에서 웹/인터넷 또는 네트웍으로 제어되는 원격 실험과 같은 형태의 원격 실습이 가능하다. 컴퓨터 및 그래피칼프로그래밍 기술의 공학실습교육 적용을 통하여 공학 실험실습의 흥미와 효과를 제고하였다.

• 수산해양교육연구
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• 제12권2호
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• pp.176-190
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• 2000

CATV 네트워크의 여유 주파수 대역을 이용한 데이터 통신망의 실용화로 보다 양질의 통신망 구축이 가능하게 되었으며, 이러한 환경을 이용하여 중등학교에서는 멀티미디어 원격교육에 대한 다양한 방안을 찾고 있다 일반적으로 CATV 네트워크의 전송속도는 256Kbps~100Mbps로서 멀티미디어 콘텐츠는 물론 대용량 멀티미디어 데이터를 이용한 원격학습과 양질의 실시간 원격교육까지 가능하다. 본 논문에서는 CATV 데이터망을 이용한 멀티미디어 데이터의 전송능력을 분석하여 보다 양질의 멀티미디어 데이터를 전송함으로서 효율적인 원격교육 방법의 새로운 모델을 설계하고, 구체적인 적용 방법을 제시 하고자 한다.

• 정보교육학회논문지
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• 제22권5호
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• pp.605-611
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• 2018

무크(Mook) 서비스 정착과 교육부의 원격 수업 확대 정책에 힘입어 대학을 중심으로 온라인 수업이 일반화하고 있으며, 출석 정규 수업의 형태도 일부 원격 방식으로 전환되는 추세이다. 본 논문은 이러한 교육 환경에서 필요한 교육용 콘텐츠를 제작하는 도구에 관한 것으로 이에 필요한 오디오 동기화 방법과 편집 알고리즘을 제안하였다. 제안한 알고리즘을 노트북 등 일반적인 PC 환경에서 그 성능을 측정하였다. 평가 결과, 안정적인 CPU와 Ram 사용량을 보였다. CPU 사용은 평균 9.3% 점유율을 나타냈고 Ram은 평균 87Mega바이트의 안정적인 사용량을 기록하였다(CPU 2.60GHz, 820*600 영역 기준). 본 제안하는 방식을 사용하면 손쉽게 자기 PC로 원격교육을 진행할 수 있을 것으로 판단된다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 1999년도 춘계종합학술대회
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• pp.99-103
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• 1999

시간과 장소에 구애받지 않고 학습을 할 수 있는 인터넷상의 가상 강의실이 인터넷의 비약적인 발전으로 현재 많이 개설되고 있다. 그러나 가상강의 홈페이지를 개인이 개설하려면 여러 가지 어려운 기술적인 문제가 많이 발생한다. 본 가상강의 홈페이지 자동 개설 툴킷은 필요한 최소한의 정보 입력만으로 자동으로 가상 강의실과 홈페이지가 개설되는 toolkit으로 perl과 c 언어를 사용하여 제작하였다.

• 한국지구과학회:학술대회논문집
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• 한국지구과학회 2005년도 춘계학술발표회 논문집
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• pp.174-175
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• 2005