• 월간포장계
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• 통권121호
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• pp.142-146
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• 2003

• 한국환경독성학회:학술대회논문집
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• 한국환경독성학회 2004년도 Sharing Experience of Human and Ecological Risk Assessment and Management in Asia/Pacific Region
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• pp.82-83
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• 2004

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2006년도 춘계학술발표대회
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• pp.1139-1142
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• 2006

Mobile Ad-hoc 네트워크(MANET)에서 각 노드들은 한정된 배터리에 의존하여 통신한다. 이와 같은 제한사항을 극복하기 위해 링크의 안정성을 유지하거나 파워 소모를 고려한 프로토콜에 대한 연구들이 활발히 이루어져 왔다. 하지만 링크의 안정성 또는 파워 소모의 어느 한 측면만을 고려함으로써 링크의 안정성은 높일 수 있으나 파워 소모가 효율적이지 못했다. 반면에 전체 파워소모는 줄일 수 있었으나 파워소모의 균형을 이루지 못함으로써 네트워크 수명을 오래 지속시킬 수 없는 문제점이 발생 했다. 본 논문에서는 배터리 잔량에 대한 threshold를 적용함과 동시에 신호세기를 고려하여 각 노드들의 균형된 파워소모와 네트워크 전체의 파워 소모를 최소화함으로써 네트워크 수명을 오래 지속시키기 위한 프로토콜인 PRTRS(Power Aware Routing Protocol based on Both Threshold by Residual Battery Capacity and Signal Strength in Mobile Ad-hoc Network)를 제안한다. PRTRS는 AODV(Ad-hoc On-demand Distance Vector Routing)를 기반으로 하였다. NS-2 네트워크 시뮬레이션 결과 PRTRS는 특정 노드로 집중되는 트래픽을 분산시켜 파워소모의 균형을 이루고 네트워크 전체의 파워소모를 최소화함으로써 네트워크 수명이 연장됨을 확인하였다.

• 한국지리정보학회지
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• 제21권1호
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• pp.71-82
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• 2018

본 연구는 울산광역시를 대상으로 화학사고에 대비한 대피시설 위치의 적정성을 분석하여 피해 최소화를 위한 방안을 연구하였다. 연구방법은 화학물질 배출 및 이용량 자료와 인구센서스 집계구 자료, 대피시설 위치정보 등을 활용하여 화학사고 위험성 평가와 대피시설의 접근성을 분석하였다. 이를 통해 대피시설 위치의 적정성을 도출하였다. 화학사고 위험성은 석유화학공장과 인구가 밀집된 석유화학공단지역 인근 5km 이내에서 높았다. 대피시설은 대부분 화학사고 위험지역에 분포하고 있으나, 석유화학공장 인근지역에서 대피시설의 접근성이 취약한 것으로 나타났다. 따라서 우선적으로 화학사고 예방을 위해 노후화된 공장시설의 안전점검도 필요하지만, 대피시설의 수용인원, 규모 등을 고려하여 보다 효과적인 대피방안을 마련해야 될 것이다.

• 자원리싸이클링
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• 제29권2호
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• pp.48-54
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• 2020

우리나라는 제조업 중심 국가로서 다양한 분야에 많은 양의 금속이 사용되나, 이들 금속이 대부분 수입에 의존하고 있다. 상당수의 금속은 전세계적으로 제한된 부존량 및 생산량에 비해 소비량이 증가하는 실정이다. 어떤 금속들은 부존 및 생산국가가 편재되어 있는 경우가 종종 있어 향후 공급의 불안정성이 우려된다. 또한 이러한 금속이 유해성을 띄고 있을 경우 환경적 측면에서도 문제가 된다. 이를 해결하기 위해 사업장 폐기물내 유해성 유가금속 회수 및 재활용을 통해 공급을 안정화시키고 환경오염을 예방할 수 있으나, 유가 금속의 종류 및 국내 배출업체와 배출폐기물 종류가 매우 많아 초기에 관련 현황파악이 번거롭다. 따라서, 본 연구에서는 공공기관 공개자료를 통해 향후 국내산업에 중요한 유해성 유가금속 선정결과를 소개하고, 국내 화학물질 배출·이동량 정보 등을 이용하여 이러한 금속(니켈, 코발트, 망간 등)를 함유 폐기물을 배출하는 업체들을 보다 용이하게 초기 현황파악 하는 방안을 순서도 형식으로 제시하였다.

• 한국환경보건학회지
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• 제47권2호
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• pp.144-154
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• 2021

Objectives: This study was intended to identify hazard contribution by region, media, and chemical by calculating a hazard-based index using pollutant release and transfer register (PRTR) data. Methods: PRTR data for the period 2011 to 2016 was analyzed to examine the regional trends in toxic releases in terms of quantity and to create a corresponding hazard-based index. For the hazard-based index, the Risk-Screening Environmental Indicators (RSEI) Model was used. Results: The results of the trend analysis show that total releases decreased slightly, but health hazard levels increased consistently. According to the outcome of regional contribution analysis of the hazard-based index, Chungcheongnam-do, Jeollabuk-do and Gyeonggi-do Provinces showed a high ratio in the index for air and water release pollutants, while Gyeongsangbuk-do and Gyeongsangnam-do Provinces showed a high ratio in the index of soil release and waste transfer pollutants. Also, as a result of the analysis of the top ranked substances in the hazard-based index, it was found that chromium, cobalt and its compounds, and ethylene oxide contributed greatly to air release substances, while chromium, benzene, and lead and its compounds contributed greatly to water release substances. Conclusion: These results showed considerable disparities between total release and health hazard levels, especially in the analysis of contribution by regions and by chemical substance. Therefore, the hazard-based index should be used both to support a more comprehensive and robust approach to screening of chemicals for environmental health policy and for management.

• 한국환경보건학회지
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• 제48권5호
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• pp.272-281
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• 2022

Background: The constant consumption of chemical products owing to expanding industrialization has led to an increase in public interest in chemical substances. As the production and disposal processes for these chemical products cause environmental problems, regional information on the hazard level of chemical substances is required considering their effects on humans and in order to ensure environmental safety. Objectives: This study aimed to identify hazard contribution and spatiotemporal characteristics by region and chemical by calculating a hazard-based result score using pollutant release and transfer register (PRTR) data. Methods: This study calculated the chemical discharge and hazard-based result score from the Risk-Screening Environmental Indicators (RSEI) model, analyzed their spatiotemporal patterns, and identified hotspot areas where chemical discharges and high hazard-based scores were concentrated. The amount of chemical discharge and hazard-based risk scores for 250 cities and counties across South Korea were calculated using PRTR data from 2011 to 2018. Results: The chemical discharge (high densities in Incheon, Daegu, and Busan) and hazard-based result scores (high densities in Incheon, Chungcheongnam-do, and some areas of Gyeongsangnam-do Province) showed varying spatial patterns. The chemical discharge (A, B) and hazard-based result score (C, D) hotspots were identified. Additionally, identification of the hazard-based result scores revealed differences in the type of chemicals contributing to the discharge. Ethylbenzene accounted for ≥80% of the discharged chemicals in the discharge hotspots, while chromium accounted for >90% of the discharged chemicals in the hazard-based result score hotspots. Conclusions: The RSEI hazard-based result score is a quantitative indicator that considers the degree of impact on human health as a toxicity-weighted value. It can be used for the management of industries discharging chemical substances as well as local environmental health management.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2010년도 춘계학술대회 논문집
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• pp.41-44
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• 2010

Hazardous air pollutants such as benzo[a]pyrene (BaP), benzene, formaldehyde have been concerned about the adverse health effect of long-term exposure. Contour map is useful for finding high-concentration region, emission source, and distributions of HAPs in the ambient air. To make a contour map, we have developed simple analytical method for selected HAPs; polycyclic aromatic hydrocarbons such as BaP, benzene and its derivatives such as toluene and xylene, and aldehydes and ketones. We have applied these methods to investigate air pollution by HAPs in some cities in Japan. The results show that these methods reveal actual emission sources if the PRTR emission report was not submitted.

• 품질경영학회지
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• 제28권2호
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• pp.192-210
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• 2000

Chemical industry has contributed significantly to the enhancement of quality of human life, but it has been regarded as a major area of environmental problem due to the potential hazards in environment and safety. This paper examines environmental management programs of chemical industry such as RC(Responsible Care) and PRTR(Pollutant Release and Transfer Register). Through the survey of Dow Chernical's environmental management system, it is examined in detail how a leading company in chemical industry has coped with environmental problem companywide.

• 한국환경보건학회지
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• 제46권2호
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• pp.232-244
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• 2020

Objectives: The purpose of this study is to develop a management system for the safe handling of chemicals and related health management based on reporting under the Chemical Control Act (CCA). It is used to search handling information by constructing data linked to the name of companies, chemicals, products, etc. Methods: Due to the differences in submission periods for each reporting regulation of the Chemical Control Act, the data used is as follows: A statistical survey collected 26,222 companies in 2014 and 2016, Pollutant Release Transfer Registers (PRTR) collected 4,234 companies in 2015-2017, performance reports by handlers of hazardous chemical substances collected 14,658 companies in 2016-2018, and declarations for import of toxic chemicals collected 892 companies in 2016-2017. The total information on 36,080 companies is standardized based on company ID, name, business registration number, address, and more. The data were classified into information such as company, chemical, and product name and amounts handled and released, and then extracted according to criteria to establish relationships among classified information. Results: A search service was developed for handling information on chemical substances for reporting data by linking four reporting data: statistical survey, PRTR, performance report by handler of hazardous chemical substances, and declaration for import of toxic chemicals under the CCA. It was composed of five menus to search by regulation type, reporting regulation, companies and chemicals, and system management. Conclusion: It is necessary to use data linked by company, region, and chemical to respond and to prevent chemical accidents. In addition, these items can be utilized to perform handling and safety management of chemicals according to whether regulations under the CCA may be implemented.