Scavenging of galvinoxyl spin 1/2 radicals in the processing of organic spintronics

Cho, Jung Min,Song, Chang Eun,Moon, Sang-Jin,Shin, Won Suk,Hong, Sugyeong,Kim, Sun Hee,Cho, Sanghee,Lee, Jung-Keun Elsevier Science B.V., Amsterdam. 2018 Organic electronics Vol.2018 No.55

개발협력의 트위닝 기법과 EU-페루 간 사례연구

정상희(Sanghee Jung),임소진(Sojin Lim) 한국유럽학회 2018 유럽연구 Vol.36 No.4

본 연구는 개발협력에서 지방분권화가 본격적으로 논의되는 가운데 한국 지방정부의 새로운 지원형태로서 트위닝 기법의 활용 가능성을 제시하고자 하였다. 이를 위해 본 연구는 트위닝 기법의 개념, 효과성과 한계점, 평가방법론에 대한 기존 선행연구의 이론적 논의들을 살펴보았다. 사례분석으로는 EU가 페루의 불법마약과 조직범죄에 대응하기 위해 추진하고 있는 프로젝트를 중심으로 트위닝 기법의 활용사례를 역량개발의 요소와 관련하여 분석하였다. 이러한 실증적인 사업에 대한 분석을 바탕으로 본 연구는 트위닝 기법의 효과성과 한계점이 실제 사례에서 어떻게 적용되고 있는가를 살펴보고, 특히 지방정부 차원에서 트위닝 기법을 활용하기 위한 정책적 시사점을 제시하고자 하였다. 결론적으로, 본 연구는 최근 지속적으로 증가하는 지방정부의 개발협력 사업 참여와 트위닝 기법 활용의 증가 추세에 따라 개발협력의 영역에서 트위닝 사업의 체계적인 관리 방안과 평가방법론의 마련이 필요하다는 것을 강조하고자 한다. 이를 위해 향후 공여국 지방정부간 그리고 기관 간 활용되는 트위닝 사례를 분석하여 개발협력 사업에 반영하고 교훈점을 도출할 수 있는 후속연구가 요구된다. 나아가 개발협력의 트위닝 사례 뿐 아니라 일반적인 도시 간 트위닝 사례분석을 바탕으로 이를 개발협력 사업에 확대, 반영할 수 있는 발전방안의 제시도 필요하다. 우리는 이러한 다양한 사례분석과 시사점의 도출을 통해 향후 한국 지방정부의 더 나은 개발협력 트위닝 사업이 가능한 환경 조성에 기여할 수 있다. This paper aims to provide implications for Korean local governments when they adopt and implement twinning methods in their development cooperation projects with other local governments in developing countries. The paper explored existing literature regarding to twinning definition and concept, effectiveness and limitations of the twinning process, and monitoring and evaluavion methods of the twinning projects. Based on this, we have conducted a case analysis of EU-Peru twinning against drugs and organised crimes. As the existing literature about twinning in development discipline, we have employed capacity development framework in analysing case study as twinning in development discourse is considered to be a part of capacity development activities. Findings of the study suggests that it is critical to design the whole process of twinning in more systemic manner, including quality management by applying lessons learned. In the end, we have recommended to conduct future research not only in wider range of analysis of development cooperation twinning cases, but also general city-to-city twinning processes in order to come up with lessons learned for the future projects. By doing so, this study intends to contribute to the enabling environment for Korean local governments’ twinning activities with local government partners in developing countries.

개발협력에서 지속가능한 출구전략의 수립과 운영에 대한 연구

정상희(Sanghee, Jung) 국제개발협력학회 2016 국제개발협력연구 Vol.8 No.1

본 연구는 군사와 경제적인 영역에서 기존에 정의되어 왔던 출구전략의 개념을 살펴 보고 개발협력 분야의 양자 및 다자차원에서 정립되고 있는 출구전략의 개념과 접근 법을 논의하였다. 따라서 앨버트 허쉬만(Albert O. Hirschaman)이 조직의 쇠락과정에서 제시하고 있는 탈퇴(Exit), 항의(Voice), 충성(Loyalty)이라는 구성원들의 세 가지 행동패턴에 대한 분석틀을 활용하여 개별적으로 분리되어 있는 출구전략의 접근법을 단계별로 구조화하고 이를 통해 각 단계에서 나타나고 있는 접근법의 특성을 분석하였 다. 이처럼 구조화된 출구전략의 개념을 토대로 영국과 덴마크 출구전략의 접근법에서 나타나고 있는 특징적인 측면을 비교, 분석함으로써 정책적인 함의를 도출하고 지속가능한 출구전략의 가이드라인을 제안하였다. 이상과 같이 출구전략을 통해 공여국들은 개발협력과 수원국에 대한 자국의 정책방향과 기준을 수립하고 외교관계의 방향을 전환할 수 있다. 또한 재원을 조정하고 수원 국의 참여를 강화할 수 있으며, 이를 통해 수원국에게 자국 스스로 개발과정을 지원할 수 있는 역량구축과 역량개발의 단계로 발전할 수 있는 기회를 제공할 수 있다. 한편, 협력국의 시각에서 출구전략은 자국의 정책의제를 적극적으로 반영할 수 있으며 인력과 제도적인 역량을 강화하고 이를 효율적으로 활용할 수 있을 뿐 아니라 정치, 경제, 사회, 문화 등 전반적인 환경의 변화를 통해 원조효과성을 제고할 수 있다. 결론적으로 정치적인 요인에 의해 결정되어 왔던 출구전략은 최근 개발협력 체제의 변화, 지속가능성, 역량개발의 개념과도 연관되고 있음을 파악할 수 있었다. The content of the study is as follows. First, the concept and approach of a bilateral and multilateral exit strategy established for the development cooperation sector will be analyzed. In addition, there are three behavioral patterns suggested by Albert O. Hirschaman that members of an organization display during the organization’s decline; these patterns are exit, voice, and loyalty. These patterns will be used to structure the approach to individually separated exit strategies in stages, and an analysis on the characteristics of the corresponding stages will be conducted. Second, case studies on the exit strategies of the United Kingdom and Denmark respectively, will be further compared and analyzed based on the concept of the structured exit strategy as mentioned above. Third, guidelines for a sustainable exit strategy are provided on the basis of policy implications deducted from the abovementioned cases. The results of investigation can be summarized as follows. From the perspective of donor countries, the exit strategy can bring a positive effect to establish criteria and diplomatic direction with priority countries. In addition, it provides better opportunity to control the financing and enforce the participation of the priority countries. The recipients should work with donors to create and strengthen their capacity development, which is a central theme of the debate on effectiveness. This research identifies the findings from the evaluation of how donors such as United Kingdom and Denmark, are approaching and managing their exit strategies. Furthermore, it provides recommendations for Korean government when considering guidelines for exit management.

서울시 어린이 놀이시설의 공급특성과 공간적 형평성 분석 : 주거유형에 따른 접근성 격차를 중심으로

정상희(Jung, Sanghee),한재원(Han, Jaewon),이수기(Lee, Sugie) 대한국토·도시계획학회 2023 國土計劃 Vol.58 No.1

Scavenging of galvinoxyl spin 1/2 radicals in the processing of organic spintronics

Cho, Jung Min,Song, Chang Eun,Moon, Sang-Jin,Shin, Won Suk,Hong, Sugyeong,Kim, Sun Hee,Cho, Sanghee,Lee, Jung-Keun Elsevier 2018 ORGANIC ELECTRONICS Vol.55 No.-

<P><B>Abstract</B></P> <P>In many cases of organic electronic devices, spin manipulation adopts galvinoxyl spin 1/2 radicals to achieve singlet-triplet transition for a change of spin ensembles. We report scavenging of galvinoxyl spin 1/2 radicals, both in liquid-galvinoxyl samples and in thermal processing of galvinoxyl-doped organic films, as determined by electron spin resonance and UV–Vis measurements. The two different mechanisms of galvinoxyl scavenging are very crucial in organic device processing that often encounters oxidation and high-temperature treatment (∼150 °C), in which situation most of the galvinoxyl frameworks cannot survive.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Galvinoxyl radicals are employed for spin manipulations. </LI> <LI> Scavenging of galvinoxyl radicals has been observed from ESR and UV-VIS measurements. </LI> <LI> Galvinoxyl frameworks cannot survive in oxidation and high-temperature treatment. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

인공증우(설) 항공실험 분석 : 2019년 국제공동연구를 대상으로

구정모(Ku, Jung Mo),고아름(Ko, A-Reum),채상희(Chae, Sanghee),황현준(Hwang, Hyun Jun),노용훈(Ro, Yonghun),정운선(Jung, Woonseon) 한국방재학회 2020 한국방재학회논문집 Vol.20 No.6

본 연구에서는 항공기를 이용하여 수행된 인공증우(설) 국제공동연구(International Joint Cloud Observation and Weather Control Experiment 2019, IJCO-WCE 2019) 사례를 레이더 자료, 지상관측소 자료, 수치 모의 자료, 항공 관측 자료를 이용하여 인공증우(설) 효과를 분석하였다. 시딩 물질의 확산을 수치 모의한 결과, 시딩 물질은 항공기로 관측된 풍향과 일치한 방향으로 확산한것으로 나타났다. 항공기 관측자료를 분석한 결과에서는 구름 입자의 평균수농도와 강수 입자가 시딩 중보다 시딩 후에증가한 것을 확인할 수 있었다. 구름 입자 측정기(Cloud Droplet Probe, CDP)로 관측된 구름의 평균수농도는 시딩 중보다시딩 후에 약 59% 증가하였고, 구름 영상 측정기(Cloud Imaging Probe, CIP)로 관측된 구름의 평균수농도는 약 82% 증가하였다. 아울러 강수 입자 측정기(Precipitation Imaging Probe, PIP)로 관측된 강수 입자는 시딩 중에는 거의 관측되지 않았지만 시딩후에 관측됐다. In this study, an international joint cloud seeding experiment (International Joint Cloud Observation and Weather Control Experiment 2019, IJCO-WCE 2019) by aircraft was analyzed using numerical simulations, ground observation data, and aircraft observation data. As a result of numerical simulations, it was found that the seeding material was diffused in a direction consistent with the wind direction observed by the aircraft. Further, aircraft observation data showed an increase in average water concentration of clouds and precipitation particles after seeding rather than during seeding. The average water concentration of clouds observed by the Cloud Droplet Probe (CDP) increased by about 59% after seeding than during seeding, and that observed by the Cloud Imaging Probe (CIP) increased by about 82%. In addition, precipitation particles observed by the Precipitation Imaging Probe (PIP) were hardly noticed during seeding, but appeared after seeding.

Effects of Curcumin (Curcuma longa) on Learning and Spatial Memory as Well as Cell Proliferation and Neuroblast Differentiation in Adult and Aged Mice by Upregulating Brain-Derived Neurotrophic Factor and CREB Signaling

Nam, Sung Min,Choi, Jung Hoon,Yoo, Dae Young,Kim, Woosuk,Jung, Hyo Young,Kim, Jong Whi,Yoo, Miyoung,Lee, Sanghee,Kim, Chul Jung,Yoon, Yeo Sung,Hwang, In Koo The Korean Society of Food Science and Nutrition 2014 Journal of medicinal food Vol.17 No.6

Aging is a progressive process, and it may lead to the initiation of neurological diseases. In this study, we investigated the effects of wild Indian Curcuma longa using a Morris water maze paradigm on learning and spatial memory in adult and D-galactose-induced aged mice. In addition, the effects on cell proliferation and neuroblast differentiation were assessed by immunohistochemistry for Ki67 and doublecortin (DCX) respectively. The aging model in mice was induced through the subcutaneous administration of D-galactose (100 mg/kg) for 10 weeks. C. longa (300 mg/kg) or its vehicle (physiological saline) was administered orally to adult and D-galactose-treated mice for the last three weeks before sacrifice. The administration of C. longa significantly shortened the escape latency in both adult and D-galactose-induced aged mice and significantly ameliorated D-galactose-induced reduction of cell proliferation and neuroblast differentiation in the subgranular zone of hippocampal dentate gyrus. In addition, the administration of C. longa significantly increased the levels of phosphorylated CREB and brain-derived neurotrophic factor in the subgranular zone of dentate gyrus. These results indicate that C. longa mitigates D-galactose-induced cognitive impairment, associated with decreased cell proliferation and neuroblast differentiation, by activating CREB signaling in the hippocampal dentate gyrus.

<b>Morphology and molecular phylogeny of a new freshwater ciliate </b><b>Urosomoida sejongensis n. sp. (Ciliophora, Sporadotrichida, Oxytrichidae) </b><b>from King George Island, Antarctica</b>.

JUNG, JAE-HO,BAEK, YE-SEUL,KIM, SANGHEE,CHOI, HAN-GU Magnolia Press 2016 Zootaxa Vol.4072 No.2

Development of single-nucleotide polymorphism-based phylum-specific PCR amplification technique: Application to the community analysis using ciliates as a reference organism

Jung, Jae-Ho,Kim, Sanghee,Ryu, Seongho,Kim, Min-Seok,Baek, Ye-Seul,Kim, Se-Joo,Choi, Joong-Ki,Park, Joong-Ki,Min, Gi-Sik Springer-Verlag 2012 Molecules and cells Vol.34 No.4

Cellular growth and fatty acid content of Arctic chlamydomonadalean

Jung, Woongsic,Kim, Eun Jae,Lim, Suyoun,Sim, Hyunji,Han, Se Jong,Kim, Sanghee,Kang, Sung-Ho,Choi, Han-Gu The Korean Society of Phycology 2016 ALGAE Vol.31 No.1

Arctic microalgae thrive and support primary production in extremely cold environment. Three Arctic green microalgal strains collected from freshwater near Dasan Station in Ny-Alesund, Svalbard, Arctic, were analyzed to evaluate the optimal growth conditions and contents of fatty acids. The optimal growth temperature for KNF0022, KNF0024, and KNF0032 was between 4 and 8℃. Among the three microalgal strains, KNF0032 showed the maximal cell number of 1.6 × 107 cells mL^-1 at 4℃. The contents of fatty acids in microalgae biomass of KNF0022, KNF0024, and KNF0032 cultured for 75 days were 37.34, 73.25, and 144.35 mg g^-1 dry cell weight, respectively. The common fatty acid methyl esters (FAMEs) analyzed from Arctic green microalgae consisted of palmitic acid methyl ester (C16:0), 5,8,11-heptadecatrienoic acid methyl ester (C17:3), oleic acid methyl ester (C18:1), linoleic acid methyl ester (C18:2), and α-linolenic acid methyl ester (C18:3). KNF0022 had high levels of heptadecanoic acid methyl ester (26.58%) and heptadecatrienoic acid methyl ester (22.17% of the total FAMEs). In KNF0024 and KNF0032, more than 72.09% of the total FAMEs consisted of mono- and polyunsaturated fatty acids. Oleic acid methyl ester from KNF0032 was detected at a high level of 20.13% of the FAMEs. Arctic freshwater microalgae are able to increase the levels of polyunsaturated fatty acids under a wide range of growth temperatures and can also be used to produce valuable industrial materials.