• Title/Summary/Keyword: u-Safety

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System Design for Ubiquitous Building Fire Safety Management Standard System (유비쿼터스 건물화재안전관리 표준시스템 구축을 위한 설계)

  • Kim, Jong-Hoon;Roh, Sam-Kew
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2009.04a
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    • pp.586-591
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    • 2009
  • U-건물 화재안전관리 표준 시스템은 건물 내 화재의 예방, 시스템관리, 비상대응, 비상 상황 관리를 실시간으로 운용하는 새로운 개념의 화재안전시스템의 구현을 위하여 연구되고 있다. 즉, 건물 내의 화재 발생이전 예방, 소방시스템의 유지관리, 비상대응 계획의 수립, 교육훈련 수행과 화재발생시 이에 대응하는 새로운 개념의 Ubiquitous-Building Fire Safety System을 만드는 것이다. U-건물화재관리 표준시스템의 개발목표는 건물에만 한정되는 것이 아니라, 건물에서 나오는 실시간 상황정보를 소방관서에서 모니터링 할 수 있도록 하는 부분까지 포함하고 있다. 이를 위하여 진행된 시스템의 설계는 화재이전과 화재이후로 나누어 4개의 단위시스템으로 구성하고, 각 건물별 정보를 취합 분석하는 시스템을 구성하여 총 5개의 단위시스템으로 하나의 U-건물화재관리 표준시스템을 구성하는 설계를 진행하였다.

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Automatic crack detection of dam concrete structures based on deep learning

  • Zongjie Lv;Jinzhang Tian;Yantao Zhu;Yangtao Li
    • Computers and Concrete
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    • v.32 no.6
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    • pp.615-623
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    • 2023
  • Crack detection is an essential method to ensure the safety of dam concrete structures. Low-quality crack images of dam concrete structures limit the application of neural network methods in crack detection. This research proposes a modified attentional mechanism model to reduce the disturbance caused by uneven light, shadow, and water spots in crack images. Also, the focal loss function solves the small ratio of crack information. The dataset collects from the network, laboratory and actual inspection dataset of dam concrete structures. This research proposes a novel method for crack detection of dam concrete structures based on the U-Net neural network, namely AF-UNet. A mutual comparison of OTSU, Canny, region growing, DeepLab V3+, SegFormer, U-Net, and AF-UNet (proposed) verified the detection accuracy. A binocular camera detects cracks in the experimental scene. The smallest measurement width of the system is 0.27 mm. The potential goal is to achieve real-time detection and localization of cracks in dam concrete structures.

Design of Operating room Patients Location System for u-Hospital (u-Hospital 환경에서의 수술실 환자 위치추적 시스템 설계)

  • Kim, Seokhun;Jung, Jinyoung;Kim, Sookyun
    • Journal of the Korea Society of Computer and Information
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    • v.18 no.1
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    • pp.103-110
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    • 2013
  • RFID is estimated to have great potential for hospitals to reduce various costs, reconsider patients' safety, and provide high quality medical service. As the ubiquitous technology allows the medical market to expand, medical centers all around the country are fiercely competing against one another. In order to increase the hospital's competitive edge by reducing IT expenses and concentrating on medical practice, the need to establish a u-Hospital using advanced IT technology is rapidly rising. This paper implements an RFID based u-Hospital system by using ubiquitous computing technology to design a location tracking device for all surgical patients, which can secure the patients' safety and increase the quality of medical service through interlocking hospital information systems.

A Study on the Ripple Effect Economy of Busan Ubiquitous-Safety Realization on Using an Input-Output Model (I-O모형을 이용한 부산 U-방재 실현의 경제적 파급 효과 분석에 관한 연구)

  • Ryu, Tae-Chang;Kim, Tae-Min;Kim, Gyeong-Su
    • Journal of the Korean Society of Hazard Mitigation
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    • v.8 no.6
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    • pp.93-100
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    • 2008
  • Dense of population construction and high density of skyscraper, and geological characteristics caused natural disasters(e.g. typhoon, tsunami, flood, storm, earthquake, etc.) and manmade disasters(e.g. fire, collapse, explosion, traffic accident, etc.). the extent and scale of the disaster are getting larger. To cope with such problems, Busan City has established the basic plan to secure the life and property of the citizens through model strategy and design of Ubiquitous-Safety Busan. This study quantitatively analyzed the ripple effect on local economy through the fulfillment of Ubiquitous-Safety. The production inducing effect of 250 billion won directly and indirectly can be estimated due to the realization of Ubiquitous-Safety. The value added effect of 115 billion won can be estimated. the employment effect of 5,580 persons can be generated with income effect of 51 billion won.

Implementation of Secure Vehicular Communication System in u-TSN (u-TSN에서의 안전한 차량 통신 시스템 구현)

  • Park, Yo-Han;Park, Young-Ho;Moon, Sang-Jae
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.4
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    • pp.100-106
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    • 2011
  • u-TSN is a promising technology facilitating road safety and traffic management for drivers and passengers. To deploy this technology in a real environment, personal information and communicated data should be protected against malicious adversaries. Even though such adversaries would appear relatively infrequently, in such cases, the benefits of u-TSN could be disrupted and disabled. Therefore, one of the ultimate goals in the design of secure u-TSN is to protect against attacks of malicious adversaries. In this paper, we present secure communication scenario for u-TSN and implement security protocols and algorithms that are the components of the scenario on an IXP425 board. The security systems, implemented as a security module, supports secure and efficient communication for the u-TSN.

Statistical Analysis Using Living Radiation Survey Data on Processed Products (가공제품에 대한 생활주변방사선 실태조사 자료를 활용한 통계분석)

  • Choi, Kyoungho;Cho, Jung Keun
    • Journal of radiological science and technology
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    • v.43 no.2
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    • pp.123-128
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    • 2020
  • Radiation Following the 2011 Fukushima nuclear accident in Japan, public interest and anxiety about radiation safety increased, and vague anxiety about commonly exposed living radiation was generated. The Atomic Energy Safety Commission has been conducting a survey of processed products that advertise "negative ions" and "far-infrared" emissions under the Living Radiation Safety Management Act. In this study, in-depth analysis was performed from a statistical point of view using the measurement data presented in the Nuclear Safety Committee's actual survey analysis report as secondary data. As a result, there was a statistically significant difference (p<0.005) between latex and civil affairs products. There were also statistically significant differences (p<0.05) in the results of testing whether there were significant differences in the annual exposure dose between groups after categorizing 71 civil products, including radon beds, into bed, bedding, and living and other categories. The correlation analysis results also confirm that, as is commonly known, the annual doses received from processed products are associated with radon derived from U-238 and Th-232.

Development of Abnormal Situation Managenet System in Process-centric Way for Enhancing Patient Safety (환자 안전 제고를 위한 프로세스 중심적인 이상상황 관리 시스템 개발)

  • Moon, Junho;Kim, Dongsoo
    • Journal of Information Technology and Architecture
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    • v.11 no.1
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    • pp.89-97
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    • 2014
  • As ubiquitous computing technologies have advanced rapidly, context awareness technology has been used in the medical part in order to improve patient safety. Nevertheless, as there is no method for managing context awareness information effectively and managing healthcare processes for handling abnormal situations systematically, it is highly required to enhance patient safety in hospital. We propose an innovative system to solve these problems. The proposed system has three main functionalities. Firstly, it enables all situations to be recognized in medical organizations. Secondly, it extracts the meaningful data from data flood by defining data patterns of recognized situations and designing a rule-based system. Lastly, it can manage patients' abnormal situations in process-centric way by integrating the business process management system. It is expected that the proposed system contributes to the improvement of patient safety in u-hospital.

Immuno-potentiating Activities of Enzymatic Hydrolysate of Japanese Mud Shrimp Upogebia major (쏙(Upogebia major) 효소가수분해물의 면역증강 효과)

  • Lee, Ji-Hyun;Yang, Ji-Eun;Song, Jae-Hee;Maeng, Sang-Hyun;Kim, So-Yeon;Yoon, Na-Young
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.51 no.2
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    • pp.135-141
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    • 2018
  • This study investigated the immuno-potentiating activities of Japanese mud shrimp Upogebia major. We examined the effects of enzymatic hydrolysate from U. major on the production of nitric oxide (NO) and prostaglandin $E_2$ ($PGE_2$) and on the expression of pro-inflammation cytokines including $TNF-{\alpha}$, IL-6 and $IL-1{\beta}$ in RAW 264.7 cells. The treatment of six enzymatic hydrolysates of U. major (alcalase, ${\alpha}$-chymotrypsin [${\alpha}-Chy$], trypsin, pepsin, neutrase, protamex) significantly increased the production of NO in RAW 264.7 cells, with ${\alpha}-Chy$ having the greatest effect. This hydrolysate was fractionated by two ultrafiltration membranes at 3 and 10 kDa to created three fractions (below 3 kDa, between 3 and 10 kDa, and above 10 kDa). Of these, the <3 kDa and >10 kDa fractions showed significant increases in NO production. These two fractions also induced $PGE_2$ production in RAW 264.7 cells and showed significant increases in the expression of all cytokines studied. These results suggest that enzymatic hydrolysate from U. major is a potentially useful food material with immune-potentiating effects.

The System of Radiation Dose Assessment and Dose Conversion Coefficients in the ICRP and FGR

  • Kim, Sora;Min, Byung-Il;Park, Kihyun;Yang, Byung-Mo;Suh, Kyung-Suk
    • Journal of Radiation Protection and Research
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    • v.41 no.4
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    • pp.424-435
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    • 2016
  • Background: The International Commission on Radiological Protection (ICRP) recommendations and the Federal Guidance Report (FGR) published by the U.S. Environmental Protection Agency (EPA) have been widely applied worldwide in the fields of radiation protection and dose assessment. The dose conversion coefficients of the ICRP and FGR are widely used for assessing exposure doses. However, before the coefficients are used, the user must thoroughly understand the derivation process of the coefficients to ensure that they are used appropriately in the evaluation. Materials and Methods: The ICRP provides recommendations to regulatory and advisory agencies, mainly in the form of guidance on the fundamental principles on which appropriate radiological protection can be based. The FGR provides federal and state agencies with technical information to assist their implementation of radiation protection programs for the U.S. population. The system of radiation dose assessment and dose conversion coefficients in the ICRP and FGR is reviewed in this study. Results and Discussion: A thorough understanding of their background is essential for the proper use of dose conversion coefficients. The FGR dose assessment system was strongly influenced by the ICRP and the U.S. National Council on Radiation Protection and Measurements (NCRP), and is hence consistent with those recommendations. Moreover, the ICRP and FGR both used the scientific data reported by Biological Effects of Ionizing Radiation (BEIR) and United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) as their primary source of information. The difference between the ICRP and FGR lies in the fact that the ICRP utilized information regarding a population of diverse races, whereas the FGR utilized data on the American population, as its goal was to provide guidelines for radiological protection in the US. Conclusion: The contents of this study are expected to be utilized as basic research material in the areas of radiation protection and dose assessment.

The Relative Analysis of the Civil Helicopter Accident (민수용 헬리콥터의 사고 비교분석)

  • Lee, Jung-Hoon;Ahn, Iee-Ki
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.15 no.1
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    • pp.18-25
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    • 2007
  • The safety should be primarily considered for air vehicle, such as helicopter, which is not easy to cope with when out of order or loss of control that followed catastrophe. The U.S National Transportation Safety Board (NTSB) investigated and analyzed for 34 years rotorcraft accidents that occurred from 1963 through 1997. This paper handles intensively the relative investigation and analysis of recent 10 years domestic civil helicopter accidents to those of the United States in order to increase the safety of helicopter transportation and to consider the main design parameter before we develop Korean Civil Helicopter. To understand the overview of civil turbine helicopter accident, it uses the NTSB's accident investigation results and the overall accident trend for U.S civil single and twin turbine engine helicopter according to category, cause, activity, and phase of operation.

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