[논문]보육실습에서 프로젝트접근법에 대한 예비보육교사의 관심수준 변화 연구

유병민,박수홍,강문숙,박철수,정경훈 교육혁신학술위원회 2011 교육혁신연구 Vol.21 No.1

본 연구는 예비보육교사가 보육실습이라는 과정에서 프로젝트 접근법에 대한 관심은 어떠하며, 관심변화 여부를 사례중심으로 살펴보는 것을 목적으로 하였다. 이를 위하여 예비보육교사를 대상으로 보육실습 사전과 사후검사를 실시하였으며, 자세하고 구체적인 사실과 연구의 질적인 부분을 찾아보고자 인터뷰하였다. 그 결과, 첫째, 프로젝트에 대한 예비보육교사들의 관심은 전반적으로 무관심으로 나타났다. 둘째, 사전․사후검사 결과, 프로젝트 접근법에 대한 관심수준의 변화가 있었던 사례에서는 관심변화의 패턴도 다양하게 나타났으며, 관심변화가 크게 없었던 사례에서는 개인, 정보관심이 높게 나타났다. 이러한 결과는 프로젝트에 대한 예비보육교사의 관심수준은 보육환경, 보육과정, 실습지도 교사, 예비보육교사의 지각력, 프로젝트에 대한 사전지식이나 교육정도에 따라 다양하게 변할 수 있음을 알게 되었다. The purpose of this study is to analyze the case in which we can identify how the SoC of prospective child care teachers about the project approach changes and why these change appears during the child care practice when we assumpt that for prospective child care teachers to implement the project approach is that they participate in change during child care practice. In Case K, the SoC of the prospective child care teacher moves from Stage 0 awareness to Stage 2, Stage 3, Stage 4, and In Case M, the SoC moves from Stage 0 to Stage 1. In Case P, the SoC moves from Stage 1 to Stage 2, Stage 3, and in Case S, the SoC isn't changed. Above this, we identify the SoC of prospective child care teachers. Case K, M, and P changes SoC after child care practice, but Case S doesn't change. the reason why there is a difference is the mindset of prospective child care teachers. Anyone who wants to accomplish specific purposes can deal with diverse changes with flexibility, but others can easily have an effect on the changes. We suggest that instructor in organization for prospective child care teachers’ education need to have a class for prospective child care teachers to put theory into practice, give direct facilitation and intervention in the field to prospective child care teachers, make a learning environment for prospective child care teachers to make good use of teaching materials and instrument, develop guidebook for project approach and give support to prospective child care teachers.

RAM용 경질다층 PCB의 신뢰성 평가기준

홍원식(Won Sik Hong),송병석(Byeong Suk Song),백재욱(Byeong Suk Song),정해성(Hai Sung Jeong) 한국신뢰성학회 2009 신뢰성응용연구 Vol.9 No.3

Printed circuit boards for RAM are widely used in modern electronics such as computers, artificial satellites and consumer durables. They are exposed to a very diverse environment and consists of many complicated components and therefore needs careful approach to the enhancement and assessment of reliability of the item. In this article reliability standards for PCBs for RAM are established in terms of quality certification tests and failure rate tests.

Fluoride in soil and plant

Byeong-Deok Hong,Ri-Na Joo,Kyo-Suk Lee,Dong-Sung Lee,Ja-Hyun Rhie,Se-won Min,Seung-Geun Song,Doug-Young Chung 충남대학교 농업과학연구소 2016 Korean Journal of Agricultural Science Vol.43 No.4

A combined large-cell neuroendocrine carcinoma and hepatocellular carcinoma tumor in the liver: A rare case report

Byeong Gwan NOH,Youngmok PARK,Hyung Il SEO,Suk KIM,Seung Baek HONG,So Jeong LEE 한국간담췌외과학회 2022 Annals of hepato-biliary-pancreatic surgery Vol.26 No.-

Transparent, Flexible Conducting Hybrid Multilayer Thin Films of Multiwalled Carbon Nanotubes with Graphene Nanosheets

Hong, Tae-Keun,Lee, Dong Wook,Choi, Hyun Jung,Shin, Hyeon Suk,Kim, Byeong-Su American Chemical Society 2010 ACS NANO Vol.4 No.7

<P>We developed a simple, versatile method of integrating hybrid thin films of reduced graphene oxide (RGO) nanosheets with multiwalled carbon nanotubes (MWNTs) via LbL assembly. This approach involves the electrostatic interactions of two oppositely charged suspensions of the RGO nanosheet with MWNTs. This method affords a hybrid multilayer of graphenes with excellent control over the optical and electrical properties. Moreover, the hybrid multilayer exhibits a significant increase of electronic conductivity after the thermal treatment, producing transparent and conducting thin films possessing a sheet resistance of 8 k Omega/sq with a transmittance of 81%. By taking advantage of the conducting network structure of MWNTs, which provides an additional flexibility and mechanical stability of RGO nanosheets, we demonstrate the potential application of hybrid graphene multilayer as a highly flexible and transparent electrode. Because of the highly versatile and tunable properties of LbL-assembled thin films, we anticipate that the general concept presented here offers a unique potential platform for integrating active carbon nanomaterials for advanced electronic, energy, and sensor applications.</P>

Square-Structure Estimation of Bolt Fastening Conditions with Using PZT Patches

Hong, Yong,Han, Byeong Hee,Hong, Dong Pyo,Yang, Sung Mo,Kim, Young Moon,Kim, Kyeong Suk Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.353-358 No.3

<P>This paper describes a primary study for a new method of enhancing measurement with using an impedance analysis method that is applied to structural health monitoring. The goal of this research is to show basic information that is used to evaluate the structural health condition with using piezoelectric sensors. We present a study for the development of a practical and quantitative technique for the assessment of the structural health condition with using a piezoelectric impedance-based technique that is associated with longitudinal wave propagation. The natural frequency has a tendency of frequency shifting with respect to the hole size that corresponds to the real structure’s crack size. To numerically estimate the damage condition, we suggest the Cov (Covariance) and CC (Correlation Coefficient) evaluation methods.</P>

Evaluation for Direct Aperture Optimization(DAO) in Intensity Modulation Radiotherapy(IMRT) treatment planning

Hong-seok Jang,Dong-min Jeon,So-hyun Park,Young-nam Kang,Byeong-oak Choi,Yeon-shil Kim,Tae-suk Suh,Sei-chul Yoon 대한방사선방어학회 2011 대한방사선방어학회 학술발표회 논문요약집 Vol.2011 No.11

大豆의 密植多收型 品種選定에 關한 育種學的 硏究 : 3報. 栽培時期別 栽植密度와 樣式이 大豆品種의 生育, 收量 및 草冠形成에 미치는 影響 3. Effects of planting density and planting pattern in different planiting time on the growth, grain yield and canopy of soybean cultivars

이홍석,趙亨烈,林炳琦 서울大學校 農科大學 1976 서울대농학연구지 Vol.1 No.2

The planting density for maximum grain yield, the response to different planting pattern, and some characteristics related to canopy formation of three soybean cultivars were studied in the condition of two different planting time. The results of experiment were summarized as follows: 1. Growth and dry matter production 1) The plant height was taller in early and dense planting as well as in uni- form-space planting than other conditions. and there were significant positive correlation between plant height and grain yield in Chungbugbaek and SRF-300. 2) The leaf area index (L.A.I.) and dry matter weight per unit area were and remarkably increased by the increase of planting density. The optimum L.A.I. and dry matter weight per 10a at initial flowering stage for the maximum grain yield were 1.9-5.9 and 130-306kg depending upon the cultivar and planting time, respe- ctively. 3) The number of nodes and branches were increased by early planting, sparse and uniform-space planting. SRF-300 was more variable in the number of nodes and branches under these conditions. 4) The pod weight per unit area was increased by the increase of planting de- nsity and uniform-space planting. The positive correlation between pod weight per unit area and grain yield was statistically significant. Ⅱ. Canopy structure 1) The length of internode was increase by the increase of plant population and uniform-space planting. This response was varied with planting time. 2) The petiole angle was generally narrowed by the increase of planting dens- sity. The petiole angle of SRF-300 was decreased as going upward to the top of plant. Kwangkyo and Chungbugbaek indicated more narrow angle in upper petiole in case of sparse planting, while in case of dense planting, upper petiole showed more wide angle than lower petiole. SRF-300 showed some characteristic adaptable to dense planting compare with other two cultivars. 3) The petiole length was increased by the increase of plant population and early planting, and it was become longer in upper part of the canopy. SRF-300 had the shortest petiole among three cultivars. Ⅲ. Yield and yield components 1) The grain yield was increased by early, dense and uniform-space planting. The maximum yield was shown at 40 plants per square meter in population density. Kwankyo indicated the highest yield in case of planting on June 1st. But in case of planting on June 20, the highest grain yield was observed in the plot of one plant per hill with two row planting of 40 plants per square meter in SRF-300, while Kwangkyo was generally higher in grain yield than other two cultivars except the plot mentioned above. The planting numbers for the maximum grain yie- ld were estimated as 53∼60 plants in SRF-300, 56∼59 plants in Chungbugbaek and 45∼47 plants in Kwangkyo depending on planting time, respectively. 2) The pod number per plant was decreased by late, dense and uniform-space planting and the rate of decrease varied wish cultivas and planting time. There was significant positive correlation between the pod weight per 10a and grain yield, especially in the plot of June 1st planting. 3) The percentage of matured grain was increased by sparse and uniform-space planting. SRF-300 showed the increased percentage of matured grain in early planting. while the percentage of matured grain was not significantly different with different planting density in this cultivar. 4) 100 grain weight and one litter weight were found to be little responsive to the planting density and planting time.

가을철 열성 질환의 감별진단에서 혈청 ADA의 진단적 의의

서병기,홍애라,용석중,안강현,김도훈,송광선,신계철 대한감염학회 1996 감염 Vol.28 No.6

목적 : 혈청 ADA는 대식세포계를 활성화시키는 감염성 질환에서 증가하는 것으로 알려져 있다. 이에 저자들은 가을철 열성질환의 원인 질환으로 흔히 발생하는 쯔쯔가무시병, 렙토스피라증, 신증후 출혈열 환자들의 혈청 ADA 를 측정하므로해서 이 질환들의 조기 감별진단에 도움을 줄 수 있는 지에 대하여 알아보고자 하였다. 방법 : 대상은 혈청학적 검사로 확인된 쯔쯔가무시병 15예, 신증후 출열열9예, 렙토스피라증 7예로 모두 31예였으며 이들의 혈청학적 진단은 간접면역형광법 및 particle agglutination법을 사용하였다. 혈청 ADA는 colorimetry법으로 측정하였다. 결과 : 1) 쯔쯔가무시병군이 렙토스피라증군과 신증후 출혈열군에서보다 유의하게 혈청 ADA의 활성이 높았다(p<0.01). 2) 기존의 보고들과 큰 차이없이 신증후 출혈열군이 쯔쯔가무시군보다 유의하게 신병증의 소견이 현저하였으며, 혈소판 수가 유의하게 적었다. 결론 : 열성 질환의 조기감별에서 혈청 ADA측정이 쯔쯔가무시병을 진단하는데 도움을 줄 것으로 생각된다. Objectives : Serum adenosine deaminase(ADA) activity is increased in various diseases such as liver diseases, tuberculosis, typhoid fever and certain hematopoietic malignancies. Serum ADA seems to originate exclusively from the monocyte/macrophage lineage in such diseases. So we investigated the value of serum ADA determination for the early differential diagnosis of serologically verified scrub typhus, hemorrhagic fever with renal syndrome(HERS) and leptospirosis. Methods : Serum ADA values were determined by colorimetry methods. Fifteen cases of serologically confimed scrub typhus were compared with 9 cases of HERS and 7 cases of leptospirosis. Indirect immunofluorescence assay was performed for scrub typhus and leptospirosis, while HERS was diagnosed by particle agglutination test. Results : Serum ADA values were significantly higher in scrub typhus(85.55 ±20.7U/L) than in hemorrhagic fever with renal syndrome(39.6 ±26U/L)or leptospirosis(38.3 ±15.1U/L)(p<0.01). Proteinuria and thrombocytopenia were significantly more common in patients with HERS than in scrub typhus or leptospirosis. Conclusion : Serum ADA measurement may he useful in early differentiation of scrub typhus from hemorrhagic fever with renal syndrome and leptospirosis before serological confirmation.

Highly efficient and bending durable perovskite solar cells: toward a wearable power source

Kim, Byeong Jo,Kim, Dong Hoe,Lee, Yoo-Yong,Shin, Hee-Won,Han, Gill Sang,Hong, Jung Sug,Mahmood, Khalid,Ahn, Tae Kyu,Joo, Young-Chang,Hong, Kug Sun,Park, Nam-Gyu,Lee, Sangwook,Jung, Hyun Suk The Royal Society of Chemistry 2015 ENERGY AND ENVIRONMENTAL SCIENCE Vol.8 No.3

<P>Perovskite solar cells are promising candidates for realizing an efficient, flexible, and lightweight energy supply system for wearable electronic devices. For flexible perovskite solar cells, achieving high power conversion efficiency (PCE) while using a low-temperature technology for the fabrication of a compact charge collection layer is a critical issue. Herein, we report on a flexible perovskite solar cell exhibiting 12.2% PCE as a result of the employment of an annealing-free, 20 nm thick, amorphous, compact TiO<SUB><I>x</I></SUB> layer deposited by atomic layer deposition. The excellent performance of the cell was attributed to fast electron transport, verified by time-resolved photoluminescence and impedance studies. The PCE remained the same down to 0.4 sun illumination, as well as to a 45° tilt to incident light. Mechanical bending of the devices worsened device performance by only 7% when a bending radius of 1 mm was used. The devices maintained 95% of the initial PCE after 1000 bending cycles for a bending radius of 10 mm. Degradation of the device performance by the bending was the result of crack formation from the transparent conducting oxide layer, demonstrating the potential of the low-temperature-processed TiO<SUB><I>x</I></SUB> layer to achieve more efficient and bendable perovskite solar cells, which becomes closer to a practical wearable power source.</P> <P>Graphic Abstract</P><P>We report annealing-free compact TiO<SUB><I>x</I></SUB> layer by atomic layer deposition for high efficiency flexible perovskite solar cells, and maintained 95% of the initial PCE after 1000 bending cycles with 10 mm bending radius. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4ee02441a'> </P>