• Journal of Internet of Things and Convergence
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• v.6 no.1
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• pp.17-22
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• 2020

This paper is about IoT(Internet of Things)-based smart trash can. In modern society, waste disposal creates several social problems. In particular, large floating populations cause a problem in the city center on weekends as the waste disposal capacity cannot keep up with the amount of waste discharged. There are problems such as stinks, unpleasant aesthetics, and insects caused by overflowing garbage. To solve this problem, a smart trash can was proposed. The proposed smart trash can provide a garbage compression function, an automatic opening and closing of the trash can lid, a display of the amount of garbage, and monitoring and control of the trash can. It is expected that the proposed 'smart trash can' can be usefully used for outdoor waste disposal with a large floating population.

• The Science & Technology
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• v.18 no.7 s.194
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• pp.57-61
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• 1985

전등의 기묘한 변종인 드 포레스트(Lee de Forest, 1873-1961)의 진공관은 라디오와 TV에 대한 '공중파'의 길을 열었다.

• Digital Contents
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• no.6 s.85
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• pp.86-91
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• 2000

하루 아침에 웬 날벼락인가? 바로 바이러스에 당했을때 하는 말이다. 그것도 사랑스러운 벌레 (Love Worm)에 물렸을때.. 5월 4일 아침에 편지함을 열어 보았더니 제목이 "ILOVEYOU" 혹은 'FW:Joke'이고 그 첨부 파일의 확장자가 VBS나 JPG, 혹은 TXT인 메일이 있었지만 첨부파일을 클릭할 시간이 없어서 그냥 둔 행운의 사용자가 분명히 있었을 것이다. 하지만 아직도 그 메일이 편지함에 남아 있다면 가차없이 휴지통으로 보내길 바란다.

• Journal of Korean Institute of Fire Investigation
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• v.3 no.1
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• pp.38-42
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• 2003

There are many origins of fire which are offered by many path, such as cigarette-butt, light of match, playing with fire, arson, and other, in and around wastebasket. Because of above-mentioned thing and the quality of the plastic, it is very difficult to discriminate the difference of burned pattern between in and around wastebasket, between an accidental fire and arson in oder to investigate the point of fire. In this study, the wastebaskets filled up with 2/3 combustibles, and then, in and around wastebasket using the gas lighter by ignitor, and we observe how the fire spread. As a result, if wastebaskets are burned inside the limit 50%, we discriminate the difference of burned pattern between in and around wastebasket. But, if wastebaskets are burned more thant 50%, it is impossible to discriminate the difference of burned pattern between in and around wastebasket.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2017.11a
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• pp.282-285
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• 2017

본 논문에서는 무인비행기를 활용하여 재철소에서 사용하고 있는 대량의 원재료인 고철의 체적을 산정하고 수량을 파악하여 기존의 재고량산정 방법의 문제를 개선하고 보다 효율적이며 객관적인 고철량을 파악하는 방법을 찾는데 목적이 있다. 고철량 산정에 있어 무게를 산정하기 위해서는 체적을 산정하여 비중값을 적용하여 산정한다. 본 연구에서는 무인비행기(UAV)를 이용하여 체적을 산정하고 정확성 검증을 위해 정형의 컨테이너 박스와 크기가 작은 휴지통을 촬영 분석하여 비교 검증한 후 고철의 체적 측정 시험을 시행하였다. 무인비행기는 고정익 드론을 사용하였으며 격자비행방식을 적용하여 촬영하였으며, 촬영 전 지상기준점을 구하고자하는 물제의 주변에 배치하고 측량하여 적용하였다. 분석결과 체적산정을 위한 검증시험에서는 측량한 치수 및 체적 값과 무인비행기분석 값이 유사하게 나타났다. 또한 제철소에서 검증한 고철의 무게와 체적을 기준으로 무인비행기를 이용한 체적 값을 비교한 결과 기존 방식에 비해 객관적이고 효율적인 값을 얻을 수 있는 것으로 판단된다.

• The Korean Journal of Nuclear Medicine Technology
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• v.16 no.1
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• pp.38-43
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• 2012

Purpose: Patients injected with FDG use the bathroom that Measured surface contamination level and spatial dose rate. This study about the effect that result affects workers in same part. Materials and Methods: Group1 is St. Vincent' s hospital's 60case. Group 2 is Bucheon St. Mary's hospital's 50case. Last case is lower the average daily number of patients than group 2. Measured time is 8:00, 10:00, 13:00, 15:00 and 17:00. Measured part is 4 point of toilet, basin and wastepaper basket, also measured accumulation dose of toilet during 3 month. Hospitals is installed PET/CT ware surveyed on presence of bathroom that used only by patient and worker has been using the bathroom. Results: The highest average surface contamination level of toilet is group1($8.38{\pm}4.56$), but the highest spatial dose rate is group3. Cumulative exposure dose measured by TLD during 3months is St.Vincent's hospital 0.78 mSv and Bucheon St.Mary's hospital 0.37 mSv. And result of survey is 16.12% worker using the bathroom. Conclusions: The more daily number of patient, the higher surface contamination level of bathroom. Especially, wastepaper basket's surface contamination level is exceed the reference value $4Bq/cm^2$. Based on This survey, Bathroom require special attention and proper decontamination.

• Journal of Institute of Convergence Technology
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• v.2 no.2
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• pp.13-19
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• 2012

This Design research is a design of rescue equipment combined with beach garbage can for prompt rescue at the time of the accident in water. As a usual, it is used as garbage can hanging a garbage bag on the holders located in both sides, and it can be used to rescue drowning men promptly taking out a rescue tube located inside of the equipment at the time of the accident in water. Support is consisted of beach one, wall-hanging one and pipe one, and it could be installed to match the situation because it can be combined with all main frames. As a usual, it is used as garbage can in seaside, but it can be used to rescue drowning men promptly taking out a rescue tube after pulling the handle located in front of main frame at the time of the accident in water, and it can be used to pull drowning men out of the water because rope is kept in rescue tube.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.5
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• pp.1131-1139
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• 2016

In the Hive file format, the sk(Security Key) cell provides access control to registry key. An attacker can figure out secret information on registry or change the security set-up if she could apply modified hive files on system. This paper presents various methods to change access control of registry key by modifying or replacing cell on hive file. We also discuss threats by access control modification and signs of attacks analysis by modified hive files.

• Journal of Korean Society of Forest Science
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• v.68 no.1
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• pp.18-31
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• 1985

Users' satisfaction and behavior at five mini parks in the central area of Seoul City were investigated under the encironmental design evaluation framework. The major findings are as follows; 1) The major user group is a student group with the ages ranging from 15 to 24. 2) Half of the users spend 20 to 60 minutes in these parks. 3) According to the multiple regression analysis, the variables related to the satisfaction in daytime are noise level, sunshine, plants, crowding, and surface slope, where those in nighttime are quality of surrounding buildings, turf area, lighting, shade, and sculpture or fountain. 4) According to the free response, the basic needs inmini parks are shade for rest and such amenity facilities as bench, trash basket, and drinking fountain. In addition to these basic needs, users prefer such visually pleasing objects as sculpture and fountain.

• Archives of design research
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• v.12 no.2
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• pp.43-50
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• 1999

The purpose of this study is to suggest the standard size of a bench in the park. To obtain the basic shapes and size of a bench in the park, several parks are selected as a sample which is located in 6 major cities in Korea. Those obtained basic data of a bench are compared to standard size of a bench in United State and Japan and then human engineering concepts are applied to determine the optimal standard size. Furthermore the standard size of a bench is suggested in two classifications. One for the adults and the other for the children. This study is limited to a determining the standard size of a bench but in the future study, overall facilities in the park for the human being ha<> to be examined.