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정익재,최용수,박흥목 한국지하수토양환경학회 1999 지하수토양환경 Vol.4 No.3
비소는 자연적인 환경 하에서 음이온적인 거동을 하며 조건의 변화에 따라 다양한 형태로 전환되는 물질이기 때문에 적당한 처리방법이 없는 형편이다. 본 연구의 처리방법은 광미에 과산화수소를 첨가하여 비산철로 불용화 하는 방법으로 실제 구봉광산의 광미를 이용하여 실험한 결과 비소와 철의 용출농도가 각각 84%와 93%가량이 감소되는 것으로 나타났으며, 순수한 황철광과 비소표준용액을 이용하여 과산화수소를 첨가하는 실험에서는 과산화수소의 첨가량에 따라 비소의 농도가 직선적으로 감소하는 것으로 나타났다. 재용출 실험에서는 철은 약 80%, 비소는 약 90%가 용출이 억제되어 장기적 안정성면에서도 우수한 것으로 나타났다. It is difficult to remedy tailings and soils including arsenic because arsenic compounds show anionic behaviour in natural condition and have chemical diversity by Eh/pH. This study was carried out to develop immobilization method of arsenic and iron in tailings and soils into ferric arsenate using hydrogen peroxide. According to experimental results, concentrations of arsenic and iron extracted from tailing of closed Gubong mine were reduced up to 84% and 93%, respectively. in this experiment. arsenic concentration decreased with an increase of hydrogen peroxide dosage. It was also showed that only 10% of arsenic and 20% of iron were extracted from the re-extraction experiments. Therefore, soil and tailing remedied by this method will be able to maintain long-time stability.
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위험지각 분석과 위험인지도 도출: 진행자에 의한 인지모델기법의 적용
정익재,안서원 한국심리학회 2016 한국심리학회지 일반 Vol.35 No.3
To compensate shortcomings of the prior psychometric studies on risk perception, the current study newly attempted facilitated modelling. In this method, researchers did not provide a pre-made list of risk items. Instead, participants(experts, ordinary people, and college students) had group discussions to come up with risk items, to rate how risky they are, and to evaluate them in terms of knowledge and dread, which are the two psychological dimensions of risk perception. The results showed that there were qualitative differences in the way that the three groups perceived what risk items were. The experts listed risk items based on scientific knowledge and objective data, but ordinary people and college students listed risk items based on what they were exposed in their lives and media, which suggests that risk concepts are partly social construct to them. The three groups showed similarities as well as differences and the results showed similarities to and differences from the prior psychometric studies. Implications of the results and future advances are discussed as well. 위험지각에 대한 기존 심리측정 연구의 문제점을 보완하기 위해 본 연구에서는 연구자가 사전에 구성된 위험대상 목록을 제시하지 않고 진행자에 의한 인지모델기법(facilitated modelling)을 사용하여 참가자들이 스스로 위험 대상을 생각해내도록 하였다. 이를 통해 전문가, 일반인, 대학생 집단이 무엇을 위험하다고 지각하는지, 그 위험수준은 어느 정도인지, 위험대상이 위험지각의 심리적 차원인 지식과 두려움과는 어떤 관련을 갖는지 등을 탐색적으로 알아보았다. 연구 결과 전문가 집단과 일반인/대학생 집단이 무엇을 위험하다고 생각하는지 자체에 질적인 차이가 있음을 볼 수 있었다. 전문가는 과학적인 지식과 객관적 자료에 근거해 위험대상을 도출하는 반면, 일반인과 대학생은 일상생활이나 미디어 등에서 노출되는 가용한 정보에 더 많은 영향을 받음을 볼 수 있었다. 세 집단은 차이점 외에 공통점도 보였고 기존 심리측정 연구 결과와의 유사점과 차이점도 나타났다. 본 연구의 결과가 갖는 시사점과 한계에 대해 논하였다.
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대중매체의 영향과 위험인식 특성: 현대사회 기술위험에 대한 집단인지모델기법 적용
정익재,Chung, Ik Jae 한국안전학회 2018 한국안전학회지 Vol.33 No.2
In consideration of limitations of the classic economic approach to risk evaluation and the psychometric analysis of risk perception, this study applies a facilitated modeling technique to a group of college students in Korea. In this group activities, researchers did not provide a pre-selected list of risk items. Instead, 35 participants had group discussions to generate 63 risk items, to rate their risk level and to evaluate their characteristics in terms of the level of knowledge and dreadfulness. This study also analyzes the influence of mass media, online news papers in particular, on risk perception by counting the number of news articles covering key word corresponding risk items generated. The results show that there are significant differences between the rank order of risk items generated by students and that of statistical or objective risk. Psychometric analyses find that the levels of knowledge and dreadfulness have meaningful correlations with risk level. A well known or a dreadful risk demonstrates a high level of risk. Correlation analyses of media coverage and the risk level also re-confirms strong positive relations. The larger number of news articles a risk issue was covered by, the higher level of risk it showed. It means that college students generated risk items on the basis of what they were exposed by media. The role of mass media in risk perception and the importance of risk communication in risk evaluation are underlined. Implications of research findings and future research are discussed as well.
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문화재 발굴 조사·연구 과정의 개선 방안 연구- 신라 고분 데이터베이스 구축을 중심으로 -
정익재 국립문화재연구원 2020 헤리티지:역사와 과학 Vol.53 No.3
In this article, the excavation and research of cultural assets were set as a process and the improvement measureswere considered. To this end, we examined the process of excavating cultural assets to diagnose problems, suggestedchanges in the format of reports and the establishment of a database, and drew up improvement models for Silla’sancient tombs and research. The problems of the current process of excavating cultural assets are as follows. First, investigation and researchfail to integrate and merely comprise ‘examination as an administrative procedure’ or ‘investigation for the sake ofinvestigation’, which ultimately hamper research and achievement. Second, there are differences in the compositionor description of the report by surveyors or excavation agencies, which make it difficult to integrate data at a higherlevel. Third, the current form of reporting remains in analog format such as books and PDFs, which not onlyreduces continuity and efficiency to the research phase, but also lags behind the rapidly changing times. We believe that the improvement of these problems should be achieved by computerizing reports, convertingthem into digital formats, and establishing them in a database. First, regarding the transition to report format, itwas pointed out that the form of excavation data, the final stage of the excavation process, remains analog and theimprovement model was presented from the perspective of linking it to excavation and research, and the justificationwas emphasized through comparison with other cases. Second, the database reviewed the build model for Sillatombs. To this end, the purpose and expected effects, targets, progress, attributes, categories, and interfaces wereexamined.
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