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한수정,이인숙 한국생태학회 2000 Journal of Ecology and Environment Vol.23 No.1
온산만의 중금속 오염도를 평가하기 위해서 고랑딱개비(Sacculosiphonaria japonica), 대수리 (Reishia clavigera), 참굴(Crassostrea gigas) 등 3종의 연체동물을 선정하여 체내의 카드뮴 구리, 아연의 농도를 분석 하였다. 카드뮴의 농도는 고랑딱개비는 3.83∼∼ 39.67 ㎍/g d.w., 대수리는 7.47∼103.47 ㎍/g d.w., 참굴은 1.32∼92.17 ㎍/g d.w.의 농도범위를 나타냈다. 굴에서의 카드뮴의 농도는 대조구보다 오염구에서 70배 더 높게 나타났다. 구리의 농도는 고랑딱개비 는 22.92∼ 1287.56 ㎍/g d.w., 대수리는 34.53 ∼656.97 ㎍g/g d.w., 참굴은 161.50∼3208.52 ㎍/g d.w.의 농도범위를 나타냈다. 이 중 고랑딱개비에서 오염구와 대조구의 구리농도 차이가 약 56배로 다른 종보다 그 차이를 크게 반영하였다. 아연의 경우는, 고랑딱개비는 93.48∼377.40 ㎍/g d.w., 대수리는 423.65∼1075.57 ㎍/g d.w., 참굴은 2018.13∼22275.00 ㎍/g d.w.의 농도 범위를 나타냈다. 오염구와 대조구에서의 아연농도의 차이는 카드뮴과 구리보다 적게 나타났으며, 참굴이 약 11배로 가장 크게 나타났다. 본 연구결과, 고랑딱개비, 대수리, 참굴 모두 중금속 오염의 지표종으로 사 용할 수 있음을 확인하였다. Concentrations of cadmium, copper and zinc were determined in three molluscan species including Sacculosiphonaria japonica, Reishia clavigera and Crassostrea gigas to assess heavy metal contamination in the Onsan Bay. The range of cadmium concentrations were 3.83∼39.67 ㎍/g d.w. in S. japonica, 7.47∼103.47 ㎍/g d.w. in R. clavigera, 1.32∼92.17 ㎍/g d.w. in C. gigas. Concentration of cadmium at contaminated site in C. gigas was 70 folds higher than that of reference site. The range of copper concentrations were 22.92∼1287.56 ㎍/g d.w. in S. japonica, 37.53∼656.97 ㎍/g d.w. in R. clavigera, 161.50∼3208.52 ㎍/g d.w. in C. gigas. The concentration of copper at contaminated site in S. japonica was 56 folds higher than that of reference site. The range of zinc concentrations were 93.48∼377.40 ㎍/g d.w. in S. japonica, 423.65∼1075.57 ㎍/g w. in R. clavigera, 2018.13∼22275.00 ㎍/g d.w. in C. gigas. The difference of zinc concentrations between reference site and contaminated site was relatively small than those of cadmium and copper in all the species tested. The largest difference was 11 folds in C. gigas. In the present work, we confirmed that all of these species, S. japonica, R. clavigera and C. gigas, could be used as biological indicators to monitor heavy metal contamination.
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한수경 ( Su Kyung Han ) 한국정치평론학회 2012 정치와 평론 Vol.11 No.-
The right to free expression, freedom of the press, is the most essential component of democracy, and journalists play a role as watchdog in democracy. However, censorship and the suppression of the press in modern democratic countries are even more critical, because they are caused in hidden and veiled ways. The declaration of war on terrorism after the 9/11 attacks, in particular, negatively influenced media landscapes in Germany, which has legitimized the violence against free press. German federal government has planned to enact various laws against terror, so called ``Anti-Terror-Pact``. Fortunately, in the case of the Cicero-Affair accused of treason in similar to the Spiegel-Affair (1962), the Federal Constitutional Court of Germany adjudicated that journalists may not be punished in the matter of leakage of governments secrets. Nevertheless, it was warned that the press freedom is seriously in danger, because political and economical powers have attempted to interference the public role of journalists in various ways. Furthermore, social problems such as child pornography are also concerned with new internet regulations which restrict the free information exchanges of citizens in cyberspace. Therefore, a new Act is required to strengthen freedom of the press in Germany.
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유휴,방치 부동산의 공간분포 및 특성 분석: 익산시를 사례로
한수경 ( Su Kyoung Han ),이희연 ( Hee Yeon Lee ) 한국도시지리학회 2016 한국도시지리학회지 Vol.19 No.1
In an era of the population decrease, the vacant/abandoned properties have increased in most cities in Korea. However, vacant/abandoned properties have been considered difficult to analyze due to the various definitions and gaps in available data sources. This study aims to define the concept of vacant/abandoned properties, to set the measurement index of them, and to analyze the spatial distribution of vacant/abandoned properties in the city of Iksan. The results of this study showed that the spatial patterns of vacant/abandoned properties vary by each different type of property. As for the residential and commerce vacant/abandoned properties, a high-density cluster has been found in the inner city. Even though vacant/abandoned properties can have detrimental negative impacts on a community’s wellbeing and livability, the problems of vacant/abandoned properties may seem far beyond the control of local governments due to the private property law. The local municipality seeking to manage or reuse the stocks of vacant/abandoned properties may be inspired by reforming existing laws or introducing innovative new tools and strategies.
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한수경 ( Su Kyung Han ) 한국정치평론학회 2014 정치와 평론 Vol.15 No.-
This paper explores the impact of online manipulation by the government on political public opinion and deliberative democracy. Dictatorial and Authoritarian governments have been attempting to directly control media to ma-nipulate public opinion in maintaining their political power. In the digital era, internet is regarded as a threat for authoritarian regimes, because the communication way in the internet environment has been revolutionary changed from one-way to two-way communication. Individuals use the internet to freely express their political opinions and to share information and ideas each other. That``s why the internet can be a tool for e-democracy in free and equal political decision-making. The internet enables citizens to help more direct and easily involvement in addressing public issues and to engage more active participation in policy-making process of government. However, there are various types of restrictions in practicing e-democracy, such as digital divide and internet surveillance. In South Korea, online censorship is often focused on political opinions and critical comments of individuals. Moreover, the National Intelligence Service(NIS) had manipulated public opinion during the 2012 presidential election in the cyberspace. Agents of the NIS had posted articles and comments on the internet in support for government policies and certain presidential candidate. Nonetheless, online censorship has been intensifying in South Korea. It``s no wonder that more and more citizens are going into ‘cyber-exile’ due to digital censorship concern. Therefore, it is quite questionable whether the internet can be used as a public platform in deliberative political communication.
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