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- 저자 : 김미경(Mi Kyeong Kim) (검색결과 173 건)
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LANDSAT 영상을 이용한 세종특별자치시의 도시화와 열섬현상 분석
김미경,김상필,김남훈,손홍규,Kim, Mi-Kyeong,Kim, Sang-Pil,Kim, Nam-Hoon,Sohn, Hong-Gyoo 대한토목학회 2014 대한토목학회논문집 Vol.34 No.3
Rapid urbanization of Korea was an unprecedented example in the world and urban population increased significantly. As a result, unbalanced distribution of population is serious problem in Korea because approximately 50% of the population is concentrated in the capital area that is 10% of nation's territory, thereby occurring various urban problems including UHI. Hence, Sejong Special Autonomous City was inaugurated officially on 2 July 2012 in order to decentralize population of capital area and induce more balanced regional development. The Sejong City has been changed drastically over a period of years as developed practically since the late 2000's and is expected to have new problems of urbanization. The land cover change due to urbanization is the main cause of UHI that urban area is significantly warmer than its surrounding areas and UHI is not only affecting urban climate change but also natural environment. So the purpose of this research is to analyze level of urbanization and UHI effect and to provide the correlation analysis between Land Surface Temperature and spectral indices. To achieve this, satellite imagery from LANDSAT were used. NDVI, NDBI, and UI were calculated using red, near-infrared, mid-infrared ($0.63{\mu}m-1.75{\mu}m$) images and LST was retrieved utilizing thermal infrared ($10.4{\mu}m-12.5{\mu}m$) image. Based on each index and LST, Changes of NDVI, UI and UHI through TVI were analyzed in Sejong City. UHI effect increased around newly constructed multi-functional administrative city, the correlation between LST and NDVI was negative and UI was strong positive.
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김미경,Kim, Mi Kyeong Korean Society for Clinical Laboratory Science 2017 대한임상검사과학회지(KJCLS) Vol.49 No.4
Heat shock proteins (HSPs) are induced as a self-defense mechanism of cells when exposed to various external stresses, such as high fever, infection, free radicals, and heavy metals. They affect the prognosis in the process of tumor formation. HSP is classified into four families: HSP27, HSP60, HSP90, and HSP100, depending on molecular weight. Heat shock protein 90 (HSP90), a molecular chaperone, plays an important role in the cellular protection against various stressful stimuli and in the regulation of cell cycle progression and apoptosis. In the present study, we assessed the differential expression of HSP90 family proteins in non-small cell lung cancer (NSCLC), and the correlation of their expression levels with clinicopathologic factors and patient survival rates. The result of this study can be summarized as follows; $HSP90{\alpha}$ showed higher expression in patients with no lymphovascular invasion (p=0.014). $HSP90{\beta}$ showed a higher expression of squamous cell carcinoma (p=0.003), and an over expression of glucose-related protein (GRP94) was significantly associated with poor differentiation (p=0.048). However, none of the HSP90 proteins showed a significant association with the survival status in patients with NSCLC. This study also indicates that $HSP90{\alpha}$ might contribute more to the carcinogenesis of NSCLC than $HSP90{\beta}$, and GRP94 and isoform selectivity should be considered when HSP90 inhibitors are studied or utilized in the treatment of NSCLC.
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수용액에서의 Ho(III) 착물의 흡수 스펙트럼에 영향을 미치는 온도 및 리간드 효과에 관한 연구
김미경,한화진,전승준,김건,Mi Kyeong Kim,Wha-Jin Han,Seung Jun Jeon,Keon Kim 대한화학회 1992 대한화학회지 Vol.36 No.6
Absorption spectra were observed for several Ho(III)-ligand systems in aqueous solution under the changes of ligand concentration and temperature. The intensity change of hypersensitive band $(^5I_8\;\to\;^5G_6)$ was quite remarkable with temperature and concentration, and was interpreted as the change of coordination environments. The transition intensities observed in these spectra were analyzed in terms of the Judd-Ofelt intensity parameters, $\Omega_\lambda$ ($\lambda$ = 2, 4, 6), for 4f $\to$ 4f electric dipole transitions. The $\Omega_2$ parameter was the most sensitive to the temperature and concentration. Using the changes of $\Omega_2$, $Cl^-$ and ${NO_3}^-$ ions were found to form inner sphere complexes in aqueous solution.
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AP 주변 환경 정보를 이용한 WLAN 기반 실내 위치추정 알고리즘
김미경,신요순,박현주,Kim, Mi-Kyeong,Shin, Yo-Soon,Park, Hyun-Ju 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.3
최근 WLAN을 기반으로 하는 실내 위치추정 시스템에 대한 관심이 증가하고 있다. 대부분의 WLAN을 기반으로 하는 위치추정 시스템들은 fingerprinting 기법을 사용한다. fingerprinting 기법에서 이동객체의 위치정확도는 참조 점의 수에 비례한다. 하지만 참조 점의 수에 따라 training 단계에서 fingerprint 데이터베이스를 생성하기 위해 많은 시간과 노력을 요구한다. 이러한 문제점들을 해결하기 위해, 본 논문에서는 WLAN 기반 AP들의 주변 환경정보를 이용하여 AP와 이동 객체 간의 거리를 산출하여 위치를 추정하는 새로운 알고리즘을 제안하였으며, 이동 객체의 위치 정확도를 개선하기 위하여 제안 알고리즘에 파티클 필터를 적용하였다. 이 알고리즘을 구현하기 위하여 먼저 AP들의 주변에 존재하는 벽, 철문, 유리문, 파티션 등과 같은 환경 정보 데이터베이스를 구축하였고 위치 추정은 감쇠 모델과 경로 손실 모델을 이용하였다. 제안 알고리즘을 실험을 통하여 확인한 결과 위치 정확도는 낮았지만 fingerprinting의 문제점을 해결하였다. Recently, There has been increasing concern about WLAN-based indoor positioning system. Most of the existing WLAN-based positioning systems use a fingerprinting method as a main approach. In the fingerprinting approach, the accuracy of the location of a mobile objects is proportional to the number of reference points. However, depending on the increasing number of reference points in the training phase, it requires more time and effort to create fingerprint database. To solve these problems, we propose the new indoor positioning algorithm that calculate the distance between a mobile objects and an AP using the information of surrounding environment WLAN based APs and applied the particle filter to the proposed algorithm in order to improve the accuracy of the estimated location in this paper. To implement this algorithm, at first environmental information database such as wall, iron door, glass door, partition etc. existing in the periphery of the AP should be established. The positioning use attenuation model and path loss model. Our experimental results with proposed algorithm are verified that the positioning accuracy was low but solved the problems with fingerprinting, compared with other positioning algorithms.
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김미경 ( Mi Kyeong Kim ),박현 ( Hyun Park ),오태진 ( Tae Jin Oh ) 한국미생물생명공학회 2012 한국미생물·생명공학회지 Vol.40 No.4
A total of 5 different polar microorganisms were isolated from Arctic lichens and their bioactive compounds were extracted from cell culture using different solvents including acetone, water, chloroform, diethylether, ethanol, ethyl acetate, methanol, and petroleum ether. The antibacterial properties of the extracts were evaluated by disk diffusion tests and minimal inhibitory concentration tests against 6 bacterial pathogens; Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus, Enterobacter cloacae, Pseudomonas aeruginosa and Escherichia coli. Among the extraction samples, ethyl acetate extracts of Burkholderia sordidicola S5-BT (KOPRI 26644) showed the highest activity (inhibition zone, 7-10 mm; MIC value, 57.5-1000 ug/ml) against targeted bacteria. Among the various solvents used for extraction, chloroform extract exhibited the weakest, but still obvious, activity.
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집단미술치료에 나타난 중도입국 청소년들의 자기 표상 특성에 관한 정신분석적 이해
김미경 ( Kim Mi-kyeong ) 한국정신분석심리상담학회 2020 정신분석심리상담 Vol.4 No.-
The purpose of this study is to investigate the characteristics of self-representation of immigrant youths, based on the object relations theory and is to help teachers at multicultural preparatory school for their early adaptation more efficiently. The subject of the study was comprised of seven Russian students at the multicultural preparatory school of middle school “A” in Gyeonggi-do Province, among the immigrant youths, living in Korea for less than 1-3 months. We conducted the survey from November 2019 to January 2020, with the help of a Russian teacher during the 12 meetings of classes, each held for 90 minutes per week. The common images in self-representation of immigrant youths, shown from group art therapy, are as follows: Firstly, it is an image of self-representation, exposed to serious anxiety. Most of the research subjects were suddenly put into a new situation one day, by immigrating to Korea with their parents, without sufficient discussion. These migrations have brought about changes in family relationships, while the immigrant youths become sensitive to their acceptance and evaluation. Also, the effect from bullying they had experienced in the relationship between friends in their home country is now a factor that makes the relationship difficult in a new environment. Secondly, it is an image of self-representation from confused self-identity. Since the immigrant youths are exposed to a dual culture at the most chaotic period of development, they are having more difficulties in establishing self-identity. And the experience of being excluded from the relationship due to the different appearance makes them experience a sense of alienation and contributes to a lack of self-esteem. Thirdly, it is an image of self-representation from extreme social introversion. Since the immigrant youths are exposed to a new language, they show a communication problem. Due to a lack of self-confidence in language difficulties, they are discouraged by easily giving up and avoiding a task to be solved. The discouraged youths feel inadequate, depressed, alienated, and helpless. Therefore, teachers at multicultural preschool need to understand the self-representation of the immigrant youths, and need to help them realistically. So this paper does not merely present a group counseling through art media for the immigrant students; investigating, by psychoanalytic understanding, the characteristics of self-expression shown from students’ situation in early adaptation, it also can help preschool teachers to understand them more deeply and offer practical support for their early adjustment to school life.
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북극 지의류로부터 분리한 미생물 배양 추출액의 항산화 활성
김미경 ( Mi Kyeong Kim ),박현 ( Hyun Park ),오태진 ( Tae Jin Oh ) 한국미생물생명공학회 2012 한국미생물·생명공학회지 Vol.40 No.4
Lichens are a symbiosis between fungi, algae and cyanobacteria. Our group recently studied the antioxidant properties of some bacterial species isolated from Arctic lichens and we confirmed that they possess high antioxidant activities. In this paper, we investigated the antioxidant capacity of 5 microorganisms newly isolated from 4 Arctic lichen species, Cladonia sp., Sterocaulon sp., Umbilicaria sp. and Cetraria sp., using various solvent extractions. We carried out 1,1-diphenyl-2-picryl-hydrazyl (DPPH) and 2,2`-azino-bis(3-ethyl benzothiazoline- 6-sulphonic acid) (ABTS) free radical scavenging activity test and ferric reducing antioxidant power (FRAP) assay. Also total phenolic and flavonoid content assays were performed. Among the bacterial culture extracts of the tested lichen-microorganisms, ethyl acetate extracts of Burkholderia sordidicola S5- B(T) had not only a high antioxidant activity (72.9%) when compared with the ascorbic acid used as the control (51.3%) in the DPPH assay, but also a high amount of phenolic content as well as flavonoid content. As a result, these lichen-microorganisms may be potentially useful sources of natural antioxidants.
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