• Title/Summary/Keyword: Urban security

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A Study on DDS (Data Distribution Service) Application for Real-time Monitoring and Control in Operation Console of the Railway Safety Control Platform (철도 안전관제 통합콘솔에서의 실시간 감시 및 통제를 위한 DDS 적용방안 연구)

  • So, Jaegeol;Shin, Kwang-Ho;Ahn, Jin
    • Journal of The Korean Society For Urban Railway
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    • v.6 no.4
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    • pp.279-286
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    • 2018
  • Recently, a safety control platform to monitor the safety of train operation in real time and prevent accidents and risks through control is under study. In the initial design, DDS communication method supporting distributed network is adopted for real-time processing of large amount of data according to the integration of existing distributed safety data. However, communication between server and console inside the safety control platform is applied to existing TCP socket communication. In the case of TCP socket communication, it is possible to process data for a small system of a safety control test bed by one-to-one communication. However, if the data is expanded all over the country in the future, it becomes difficult to cope with a case where communication traffic occurs due to vast amount of data. In this paper, we propose DDS communication method to support distributed network between server and console of security control platform, and demonstrate TCP socket and DDS method, and compare throughput and speed. As a result, we have found that the scalability and flexibility are improved in case of applying DDS communication to future systems.

The Study on the Development and Utilization Plan for Closed Private Universities - Based on the case of A University - (지방사립대학의 폐교에 따른 발전 방안과 활용방안에 관한 연구 - A 대학교의 중심으로 -)

  • Song, Hwa-Yeong;Han, Kun-Hee;Shin, Seung-Soo
    • Journal of Industrial Convergence
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    • v.20 no.4
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    • pp.7-14
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    • 2022
  • The decrease in the school-age population caused the closure of private universities, but the guidelines at closed private universities are ambiguous, causing confusion. Therefore, this study intends to suggest a plan to utilize the closed school university. The government aims to increase the possibility of selling closed schools by preventing alley slums through the recovery of alley commercial districts and local communities. The data were collected through a Google survey from September 30 to October 8, 2021 and an on-site interview conducted on October 2, 2021. A total of 84 nearby citizens of the closed school university were surveyed, and on-site interviews were conducted with a total of five people. The collected data suggested the direction of utilization plan for closed school building. This study will present a model for the use of closed school property in the future and contribute to the establishment of urban regeneration policies.

Study of Consumers' Perceptions of Eco-friendly Agricultural Products and Policies by Group (친환경 농산물 소비자의 집단별 소비특성 및 정책에 대한 인식연구)

  • Lee, Tae-gyeom;Kim, Eun-Sol;Choi, Jin Ah;Kim, sangbum;Lee, Jae-Ho
    • Journal of Korean Society of Rural Planning
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    • v.28 no.4
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    • pp.83-91
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    • 2022
  • The goal of this study is to promote the spread of environmentally friendly agricultural products, which have been receiving a lot of attention lately, as a way to improve food safety and quality. As a result of the increased labor input, increased production costs, and an aging population, environmentally friendly agriculture is making it more difficult for farmers to expand their enterprises. In the meantime, consumers find it difficult to spread eco-friendly agricultural products due to their high expectations for safety and quality, as well as the desire to purchase products at a reasonable price. Previous studies have revealed differences in perceptions between eco-friendly agricultural producers and consumers. In light of this, this study divided consumers based on their characteristics (such as age, purchase history, health concerns, etc.), and different policies were proposed in order to increase purchasing factors for each group based on their characteristics. In order to gather information for this study, general citizens were asked about their perceptions of eco-friendly agricultural products, future purchase intentions and awareness, reliability, necessity, purpose, and information sources. A two-step clustering analysis was conducted using nominal and continuous variables simultaneously. The paper presents the three derived group differences (senior organic interest group, middle-aged organic interest group, and indifferent young organics) as well as group differences for the purchasing/non-purchasing factor analysis and policy improvement for each group. An eco-friendly agricultural product distribution proposal was made at the end of this article.

Extracting Road Points from LiDAR Data for Urban Area (도심지역 LiDAR자료로부터 도로포인트 추출기법 연구)

  • Jang, Young Woon;Choi, Yun Woong;Cho, Gi Sung
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.28 no.2D
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    • pp.269-276
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    • 2008
  • Recently, constructing the database of road network is a main key in various social operation as like the transportation, management, security, disaster assesment, and the city plan in our life. However it need high expenses for constructing the data, and relies on many people for finishing the tasks. This study proposed the classification method for discriminating between the road and building points using the entropy theory, then detects the classes as a expecting road from the classified point group using the standard reflectance intensity of road and the characteristics restricted by raw. Hence the main object of this study is to develop a method which can detect the road in urban area using only the LiDAR data.

A Study of Institutional Improvements for Responding to Electric Vehicle Fires: Focusing on the Case of Seoul (전기자동차 화재 대응을 위한 제도적 개선 방안 연구: 서울시 사례를 중심으로)

  • Nam-Kwun Park;Seung-Hee Ham
    • Journal of the Society of Disaster Information
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    • v.20 no.1
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    • pp.32-39
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    • 2024
  • Purpose and Method: This study aims to suggest institutional improvements to enhance the response to electric vehicle fires. To this end, we examined the prevalence of electric vehicles, fires, and related legal systems in Seoul. Results: The top-level laws and ordinances related to electric vehicles are centered on distribution policies, so there is no practical fire response plan for electric vehicle fires. In order to apply the same regulations to each local government, it is necessary to set standards and establish a system for firefighting and safety facilities in higher laws. Conclusion: Establishing standards for the installation of fire and safety facilities that take into account the characteristics of electric vehicle fires and improving related systems will ultimately lead to an increase in the penetration rate of electric vehicles.

The Set of Performance Evaluation Index of Remodeling in Rural Housing for Residential Environments Improvement (주거환경개선을 위한 농촌주택 리모델링 성능평가지표 설정에 관한 연구)

  • Kim, Hye-Lan;Lim, Chang-Su;Kim, Eun-Ja;Hong, Kwang-Woo;Moon, Ho-Gyeong
    • Journal of Korean Society of Rural Planning
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    • v.20 no.1
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    • pp.1-12
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    • 2014
  • Living environments in rural area have become deteriorated rapidly. Increase of aging population, decline in agricultural income, polarization of wealth in rural community due to rural returners have caused severe decline and imbalance of living environments in rural area. Responding to this circumstances, governments currently develop projects for improving living environments focusing on individual housing which were excluded from governmental supports because those had been regarded as private property. Nevertheless, there are still some gaps and problems in evaluating the quality of living environment and suggesting effective solutions. It would be because standards and guidelines of the projects have been based on urban housing system. In order to support the implementation of the projects, this research has developed an index for evaluating and monitoring the quality of living environments in rural area. By applying Delphi method, the index has been created in four categories of 'security', 'convenience', 'comfortability', and 'durability' 'Security' consists of structural safety, crime, disaster, accident prevention. 'Convenience' includes three divisions of living, traffic, farm working. 'Comfortability' is divided into sanitation, indoor environments, and aesthetic appreciation. Lastly, 'durability' has four divisions of energy conservation, environmental friendliness, efficiency, and economics. Each sub-division also has different items from three to twelves. In the case of an index for performance evaluation, items have been derived from energy conservation(6-items), and environmental friendliness(7-items). Items developed as an index for evaluating rural living environments in this research might be good background information for remodeling project in rural housing development.

Application of Crime Prevention Design based on Public Data Analysis: Focusing on Seoul (공공데이터분석 기반 범죄예방환경설계 적용 : 서울시 중심으로)

  • Kim, Sung-Jun
    • Korean Security Journal
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    • no.60
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    • pp.91-111
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    • 2019
  • Violent crimes have increased continuously due to the development of urban society and have become a threatening factor against the residential safety of citizens. The prevention of these crimes is always a major topic in human society and one of the fundamental elements of the quality of life and safety of citizens. In recent years, much attention has been paid to environmental design through the Crime Prevention Through Environmental Design (CPTED) as a preventive measure. Currently, South Korea is promoting the openness and utilization of public data, and crime prevention is one of the fields that can utilize public data actively. This approach to crime prevention utilizing public data will be helpful for the proposal of policies from new viewpoints departing from the general utilization measures of CPTED that improve streetlights and closed-circuit television (CCTV) installations, whose limitations have been pointed out as they are only mechanical surveillance. Thus, this study sets the research scope based on the statistics of the status of five criminal offenses by administrative district in recent years provided by the data portal in Seoul City, the capital of South Korea, as the utilization data and concentrates on the analysis. Based on the analysis results, this study proposes a method to utilize classical music as a new policy for regions where the improvements are most needed. The open-source Python analysis program was employed as the main data analysis and visualization method.

The Effective Policy for the Establishment of Disaster Management System in Korea (우리나라의 효과적(效果的)인 재난관리체제(災難管理體制) 구책방안(構策方案)에 관한 연구(硏究))

  • Park, Dong-Kyun
    • Korean Security Journal
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    • no.3
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    • pp.83-116
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    • 2000
  • Many concerns have been raised for importance of disaster management after 1990's numerous urban disasters in Korea. When the primary function of government is to protect lives and property of citizens, disaster management should be included in the mainstream of public administration and many hazard countermeasures should be carried out for that purpose. The principal purpose of this research is to establish ways and means needed to improve the disaster management system in Korea. This paper is split into five chapters. Chapter I is the introduction part. Chapter II introduces the reader to a disaster management theory, and deals with various disaster management systems of foreign countries such as the U.S.A. and Japan, Chapter III describes and characterizes the Korea's current disaster management system. The Korean disaster management system has been reestablished through the enactment of the Disaster Management Act of 1995 and the full revision of Natural Hazards Management Act of 1995 after series of catastrophic man-made disasters since 1993. Chapter IV is devoted to the establishment of an effective disaster management system in Korea. In this chapter, I discusses measures needed to improve the quality of CDMB(Central Disaster Management Bureau)'s service to the people. I strongly reemphasize the effectiveness of a comprehensive risk-based, all-hazard national emergency management system that addresses preparedness, mitigation, response, and recovery. To that end the Administration should develop legislation, new policies, and organizational plans to invigorate the agency with a refocussed mission. Chapter V is a conclusion. As the demand for citizens'welfare has been continuously increased in the localization, the importance of disaster management is emerging subject in the public sector. The disaster management carries out complicated affairs and manages diverse objects, the cooperation/connection system of the central-local government and citizens, and non-governmental organization should be established.

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Analysis of Statistical Characteristics of Annual Precipitation in Korea Using Data Screeening Technique (데이터 스크린 기법을 이용한 연강수량의 통계적 특성 분석)

  • Jeung, Se-Jin;Lim, Ga-Kyun;Kim, Byung-Sik
    • Journal of Korean Society of Disaster and Security
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    • v.13 no.3
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    • pp.15-28
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    • 2020
  • Hydrological data is very important in understanding the hydrological process and identifying its characteristics to protect human life and property from natural disasters. In particular, hydrological analysis are often performed assuming that hydrological data are stationary. However, recently climate change has raised the issue of climate stationary, and it is necessary to analyze the nonstationary of the climate. In this study, a method to analyze the stationarity of hydrological data was examined using the annual precipitation of 37 meteorological stations with long - term record data. Therefore, in this study, the stationary was determined by analyzing the persistence, trend, and stability using annual precipitation. Overall results showed that a trend was observed in 4 out of 37 stations, stable was investigated at 15 stations, and persistence was shown at 4 stations. In the stationary analysis using the annual precipitation data, 25 stations (67% of 37 stations) were nonstationary.

Forwarding Protocol Along with Angle Priority in Vehicular Networks (차량 통신망에서 Angle 우선순위를 가진 Forwarding 프로토콜)

  • Yu, Suk-Dea;Lee, Dong-Chun
    • Convergence Security Journal
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    • v.10 no.1
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    • pp.41-48
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    • 2010
  • Greedy protocols show good performance in Vehicular Ad-hoc Networks (VANETs) environment in general. But they make longer routes causing by surroundings or turn out routing failures in some cases when there are many traffic signals which generate empty streets temporary, or there is no merge roads after a road divide into two roads. When a node selects the next node simply using the distance to the destination node, the longer route is made by traditional greedy protocols in some cases and sometimes the route ends up routing failure. Most of traditional greedy protocols just take into account the distance to the destination to select a next node. Each node needs to consider not only the distance to the destination node but also the direction to the destination while routing a packet because of geographical environment. The proposed routing scheme considers both of the distance and the direction for forwarding packets to make a stable route. And the protocol can configure as the surrounding environment. We evaluate the performance of the protocol using two mobility models and network simulations. Most of network performances are improved rather than in compared with traditional greedy protocols.