• 한국환경복원기술학회지
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• 제27권1호
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• pp.45-54
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• 2024

This study developed a model to evaluate the co-benefits and trade-off effects between biodiversity and carbon storage capacity based on the implementation locations of nature-based solutions. The model aims to propose optimal implementation locations by using the conceptual idea of edge effects for carbon storage and connectivity for biodiversity. The co-benefits were considered by simultaneously taking into account two effects rather than a single effect. Trade-off effects were observed among optimal plans through a comparison of benefits. The NSGA-II multi-objective optimization algorithm was utilized, confirming the identification of Pareto-optimal solutions. The implementation patterns of Pareto-optimal solutions for green areas were examined. This study holds significance in proposing optimal locations by evaluating various co-benefits and trade-off effects of nature-based solutions. By advancing models based on this evaluation framework, it is anticipated that the assessment of co-benefits and trade-off effects among various benefits of nature-based solutions, such as climate change mitigation, enhancement of biodiversity, and provision of ecosystem services, can be accomplished.

• 한국조경학회지
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• 제28권1호
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• pp.83-91
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• 2000

This study was carried out to develop the close-to nature construction technology for the stream which has been improved just for the flood control with artificially straightened and concrete covered, losing the various functions of the stream such as wild-life habitat, polluted water purification and waterscape. Jungpyung stream in youngin City, Kyunggi Province was selected as a case study site. The results were as follows; 1. Existing stream improvement planning could accept the close-to-nature techniques of the low-flow revetment, keeping the capability of flood control and water use. 2. The low-flow revetment was planned and executed to the bottom of the stream without damaging the existing bank, and the slope of the low-flow revetment was adjusted as 1:1.2∼1.5. Consequently it would not disturb the water flow when the flood occurred and it would keep the constant water flow even at the drought with providing a stable ecosystem and water purification. 3. Low-flow revetement was planted with Salix species and perennials naturally, and it would be a precious biotope for the diverse floras and faunas. 4. Some furnitures such as stepping stone bridge, wooden bridge and step were installed to the suitable locations for the convenience of users, and it will be ot only the sound stream environment but also easy access to the waterscape. 5. This case study site will be monitored for 3 years systematically after the construction was finished in September, 1999 to get the exact results for the scientific approvement

• 한국과학교육학회지
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• 제35권1호
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• pp.169-177
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• 2015

본 연구에서는 학생들의 과학 기술관련 사회쟁점(SSI)에 대한 의사결정과정을 탐색하는 방안으로 기술의 본성(NOT)을 제안하였다. SSI 의사결정과정에서 자주 언급되는 논점들은 과학 지식 및 지식의 형성과정에서 추출된 과학의 본성보다는 인간이 필요로 하는 도구를 만들거나 사회에서 벌어지는 다양한 문제를 해결하고자 개발되는 기술과 더욱 밀접하게 연관되기 때문이다. 이에, 서울 소재 대학교에 재학중인 45명의 학생들을 대상으로 GMO(황금쌀)에 대한 시나리오를 제공한 후, 그에 대한 의사결정 내용을 글로 작성하도록 하였다. 글쓰기에서 드러난 학생들의 주요 논점은 네 가지로 요약될 수 있었다. 첫째, 과학기술 인공물이 사회문제를 해결할 수 있을까? 둘째, 해당 사회문제를 해결하기 위한 다른 대안은 없을까? 셋째 과학기술 개발과정 및 관련 제품이 유통되고 사용되는 과정에서 발생할 수 있는 부작용 혹은 문제점은 없을까? 넷째, 과학기술의 불확실성이 존재하는 상황에서 어떤 대응을 해야 할까? 연구자는 이 네 가지 논점을 문헌에서 추출한 기술의 본성(NOT)(문제의 해결안으로서의 기술, 문화적 맥락과 가치의 역할, 기술적 트레이드오프, 시스템으로서의 기술, 기술적 진보)의 관점에서 해석하였다. 그 결과, NOS와 달리 NOT는 학생들의 주요 논점에서 명시적으로 드러났으며, 이를 통해 학생들의 기술에 대한 이해 수준도 가늠해 볼 수도 있었다. 이는 SSI 맥락에서 합리적인 의사결정 능력을 함양하는 방안으로서 NOT의 적용가능성을 시사한다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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• pp.294-294
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• 2014

Developing magnetic thin films with desirable physical properties is a key step to promote research in spintronics. Organic-based magnetic material is a relatively new kind of materials which has magnetic properties in a molecular and microscopic level. These materials have been constructed by the coordination between 3d transition metal and organic materials producing long-range magnetic orders with a relatively high transition temperature. However, these materials were mostly synthesized as a form of powder, which is difficult to study for their physical properties as well as apply for electronic/spintronic devices. In this study, we have employed physical vapor deposition (PVD) to develop a new organic-based hybrid magnetic film that is achieved by the coordination of Fe and tetracyanoquinodimethane (TCNQ). The IR spectra of the grown film show modified CN vibration modes in TCNQ, which suggest a strong bonding between Fe and TCNQ. The thin film has both ferromagnetic and semiconducting behaviors, which is suitable for molecular spintronic applications. The high resolution photoemission (HRPES) spectra also show shift of 1s peak point of nitrogen and the carbon 1s peaks display traces of charge transfer from Fe to TCNQ as well as shake-up features, which suggest strong bonding and anti-bonding nature of coordination between Fe and TCNQ.

• 문화기술의 융합
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• 제6권3호
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• pp.193-204
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• 2020

21세기는 과학 기술이 발전함에 따라 정보화 사회가 급속하게 진행되었다. 그러므로 우리의 의식과 전통은 서구화의 조류에 휩싸이게 되었다. 따라서 한문이나 한자의 교육 등도 경시되어 자연스럽게 한시문학도 경시되거나 소외되게 되었다. 이는 물질문명의 풍요를 가져오게 되었으나 정신적인 면에서는 항시 쫓김이나 불안정함이 상존하게 하였다. 이러한 시대 조류 속에서 한시(漢詩) 창작의 외길 인생을 걸어 온 시인이 있다. 그는 향리에서 자연과 벗하면서 독특하게 한시만을 짓는 계산(溪山) 권승근(權丞根)(1940~, 이하 '계산')이다. 그의 한시는 자연에서 삶의 체험을 통하여 드러났기 때문에 공감을 일으켜주고 있다. 그의 시상의 발원은 자연이며, 자연에서 얻은 시정(詩情)은 곧, 순박과 순수이다. 그러므로 그의 시는 자연스러운 멋과 맛이 담기게 되었다. 계산의 한시문학은 자오(自娛)의 미학요소·자악(自樂)의 미학요소·자만(自滿)의 미학 요소·자적(自適)의 미학요소가 그의 문학에 체현되어 있다. 이를 바탕으로 한 그의 한시문학은 자연이연적(自然而然的) 초연(超然)·한원물유적(閒遠物遊的) 한담(閑淡)·생취청원적(生趣淸遠的) 일운(逸韻)의 심미경계를 띄고 있다. 이와 같이 계산 한시의 심미경계는 심도가 있음을 알 수 있다. 이는 21세기, 이 시대인이 짓는 한시의 심미경계이다.

• 한국수자원학회논문집
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• 제40권12호
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• pp.1007-1014
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• 2007

과거 치수적 목적에 의해 진행하던 하천정비방식이 최근에 친환경적 개념의 정비방식으로 전환되면서 하천살리기 운동을 비롯해 하천의 환경기능을 개선하려는 노력이 진행중이며 전국적으로 자연형 하천정비 또는 친환경적 하천 복원 등의 사업이 활발히 시행되고 있다. 호안공법 또한 자연형 하천정비 개념의 도입이후 다양한 호안공법이 시공되고 있는 상황에서 보다 적합한 호안공법의 적용을 위해서는 하천의 환경특성을 고려할 필요가 있다. 따라서 본 연구는 자연 친화적 하천정비를 위한 호안의 평가지표 및 기법의 개발에 대한 선행연구로서 현장조사에 의한 세부조사항목들을 활용한 평가방법을 제안하였다. 수리적 안정성 부분의 평가 항목은 유선형태, 하상경사, 유속, 소류력비의 4개 항목이며, 환경성 부분은 호안식생, 하천수의 상태, 고수부지의 토지이용, 고수부지 재료, 고수부지 식생의 5가지 항목이다. 평가방법은 각 평가 항목별로 1$\sim$5점의 점수를 부여하여 평가하였고 수리적 안정성과 환경성 부분의 평균 점수를 산정하였다. 제안된 평가방법의 적용결과 다수의 기존 호안이 수리적 안정성에 과도하게 편중되어 있고 환경성의 고려는 매우 미흡한 양상을 보이고 있음을 확인할 수 있었다. 본 연구에서 제안된 방법은 향후 하천의 호안설계 및 시공을 위한 가이드라인 제시를 위한 초석으로 활용될 수 있을 것으로 기대된다.

• 조형예술학연구
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• 제8권
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• pp.241-266
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• 2005

Current information-oriented society is expanding rapidly with the huge change to our society from the information revolution emerged in mid '50s. Information technique such as computer, communication satellite and cable technology play their in this information-oriented society, and in 1980s, digital technique was adopted to media, inviting new phenomenon in communication of overall society. Expectations and hope for new trends and changes from digital era flourished when we entered into new Millenium, the 21st century. Since then we have gone through changes in years from analogue to digital. Now the word 'digital' is conceived in unified manner in almost every fields and influences overall society, changing our life pattern rapidly. Modern society had demanded some speedy and bidirectional communication tool in shifting digital era, and resulted from that was a new culture, Now the society changes more and more quickly under the speedy information sharing. From that perspective we need to establish the aspects of sensibility expression, which is one feature of the communication. The sensibility-oriented digital was originated from the human nature, which counts emotion and composure much. To satisfy the human nature a new cultural value which transcend a traditional one is needed. And the sensitivity expression to meet the need is one communication tendency in digital era. Digital era has totally different social qualities from that of analogue era. In digital era, prompt respond to rapid change and creativity combined with sensitivity are needed. Therefore a man with sensitivity would be more outstanding than a man of intelligence. The picture of digital and analogue in our society consists of two axis one is analogue axis like retrospective trend, admiration for nature , oriental thought etc. , and the other is the digital axis of internet and information technology. Sensibility can be widely interpreted as analogue thinking. It is surely different from the plain retrospective trend or nostalgia for past. It is a tendency that digital technology is used and cooperated with the emotion in human nature, In this paper we suggest the sensitivity expressions in detail through the study cases including both sides of digital and sensitivity expressions such as 'Bravo your life' advertising campaign of Samsung Insurance, MP3 advertising campaign, and 'Mini-homepage' of Cyworld. Under the circumstances the main direction of communication is oriented to human. This study's purpose is to think the true meaning of this digital era, to overcoming its weaknesses, such as over-dependency on technique and selfish individualism and to harmonize digital and sensitivity expression. The sensitivity-oriented expression than the reason-oriented one is expected to be put forth in whole media, and this is a more efficient tendency under the shifting digital era.

• 한국환경복원기술학회지
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• 제27권2호
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• pp.1-16
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• 2024

To achieve carbon neutrality and restore the national environment, there is growing interest in policies to transform national land areas into green space, such as expanding nature-based solutions, increasing biodiversity, and improving ecosystem service functions. In addition to complying with international agreements such as the United Nations Framework Convention on Climate Change and the Convention on Biological Diversity, it is necessary to expand green spaces to achieve the 2050 Carbon Neutrality goal, which can be achieved by restoring the damaged land in an ecological way. However, it is challenging to implement green restoration in a systematic and active way due to conflicts of interest among landowners and lack of institutional support and advanced technology. Therefore, this study aims to develop a strategy to expand green restoration and implement it smoothly and systematically. This study examined the current status of green restoration in South Korea by investigating green restoration laws and systems and overseas trends, and by surveying the perceptions of 1,000 people selected from a pool of the public. The results of this study show that it is difficult to implement the green restoration efficiently because the laws related to restoration are scattered. According to the relevant legal plans, the perception and direction of restoration is to pursue a sustainable national land environment, allow people to benefit from nature, improve the quality of life, and nurture related industries and human resources. In the international community, it is mentioned that green restoration contributes to achieving the 2050 Carbon Neutrality goal, revitalizing green industries, developing and applying advanced technologies, maintaining consistency in restoration-related policies, expanding citizens' access to green spaces, and adopting nature-based solutions. Both experts and the public are aware of the seriousness of the damage to the natural environment and prefer restoration with human use rather than focusing on natural recovery. It is expected that this study will contribute to the future direction of green restoration and the implementation of tasks for the sustainable restoration of the national land environment and the zero-carbon era.

• Kyungpook Mathematical Journal
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• 제46권1호
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• pp.49-56
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• 2006

The aim of the present work is to obtain the inverse Laplace transform of the product of the factors of the type $s^{-\rho}\prod\limit_{i=1}^{\tau}(s^{li}+{\alpha}_i)^{-{\sigma}i}$, a general class of polynomials an the multivariable H-function. The polynomials and the functions involved in our main formula as well as their arguments are quite general in nature. On account of the general nature of our main findings, the inverse Laplace transform of the product of a large variety of polynomials and numerous simple special functions involving one or more variables can be obtained as simple special cases of our main result. We give here exact references to the results of seven research papers that follow as simple special cases of our main result.

• 접착 및 계면
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• 제6권1호
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• pp.7-10
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• 2005

Condensation control of nano-particles has become important in order to fabricate minute condensed structures. In this study, we focus our attention on condensation mechanism of polymer aggregates in a resist film. The polymer aggregate is structural component of a resist material which is used in lithography process. The condensation nature of polymer aggregates in the resist film surface is observed by using atomic force microscope (AFM). By using the AFM, the condensation of polymer aggregates can be observed clearly. The condensation of polymer aggregate strongly affects to precise fabrication of resist pattern below 100nm size. The interaction force among polymer aggregates can be analyzed based on Derjaguin approximation. We also discuss about condensation nature of polymer aggregates in the resist film surface with the help of micro sphere model.