안전성 향상을 위해 감마선 조사한 시판 플레인 요구르트의 품질 특성

김현주,송현파,함준상,이주운,김기혁,조철훈,Kim, Hyun-Joo,Song, Hyun-Pa,Ham, Jun-Sang,Lee, Ju-Woon,Kim, Kee-Hyuk,Jo, Cheor-Un 한국축산식품학회 2008 한국축산식품학회지 Vol.28 No.5

To develop a yogurt for sensitive consumer such as infants, children or immuno-compromised patients using gamma irradiation, the effects of gamma irradiation on the microbiological, chemical, and sensory quality in a commercial plain yogurt were investigated. No viable coliform bacteria were detected in the sample and approximately a 6 decimal reduction was achieved in the number of total aerobic bacteria by irradiation at 5 kGy. The initial population of lactic acid bacteria observed in the commercial plain yogurt was 8.95 log CFU/g. Gamma irradiation significantly reduced the initial microbial level to 6.47 and 2.85 log CFU/g after irradiation at 1 and 3 kGy, respectively (p<0.05). However, irradiation dose up to 5 kGy could not completely eliminate the lactic acid bacteria in commercial plain yogurt. pH, color, lactose and lactic acid content, and sensory quality were not affected by irradiation treatment and storage. Our results suggest that irradiation can improve the microbial quality of commercial plain yogurt without impairing the physicochemical and sensory quality.

라인스캔 카메라를 이용한 3차원 정밀 측정

김현주,윤두현,김학일,Kim, Hyun-Ju,Yoon, Doo-Hyun,Kim, Hak-Il 한국광학회 2008 한국광학회지 Vol.19 No.5

본 논문에서는 라인스캔 카메라를 통해 모든 영역의 영상을 획득하는 연구를 제안한다. 이 방법은 기존의 면적 카메라를 이용했던 방법에 비해 투영격자의 이동 횟수를 획기적으로 줄일 수 있으며, 그로 인해 측정시간이 매우 빠르고 측정정밀도도 뛰어난 장점을 가진다. 본 논문의 스캐닝 모아레 측정 방법은 넓은 영역의 3차원 형상 정보를 얻는데 매우 유익하며, 대면적의 대상물 측정 시 일반적으로 사용하는 stitching 기법을 사용할 필요가 없으므로 한번에 전 영역의 3차원 형상의 복원이 가능하여 보다 빠른 속도로 3차원 형상 정보를 얻을 수 있는 효과가 있다. 또한, 투영격자 하나만을 이용한 영사식 모아레 방식을 이용하여 작은 높이 단차를 갖는 물체의 3차원 형상을 복원하고 그 높이를 용이하게 측정 할 수 있다. 본 연구는 양산환경(Mass production)의 웨이퍼 범프 높이 검사 및 FC-CSP나 FC-BGA 범프 높이 검사 등에 활용 할 수 있으며, 실험을 통해 기존의 방법에 비해 투영격자의 이동횟수 및 측정 속도가 향상되었음을 확인하였다. This paper presents the Projection Moire method using a line scan camera. The high resolution feature of a line scan camera makes it possible to scan an image quickly, thus enabling a much quicker 3D profile. This method uses a high resolution line scan camera making it possible to scan an image at high speed simultaneously measuring the 3D profile of a large FOV. When using a high resolution scan camera, a full FOV is scanned, thus requiring just one movement of a projection grating. As a result, the number of grating movements is reduced drastically. The end result is a faster and more accurate 3D measurement. Moving the grating too quickly causes vibration in the imaging system, which will normally be required to apply a stitching technique when using an area scan camera. However the technique is not required when using a line scan camera. Compared with the previous techniques, it has the advantages of simple hardware without moving mechanical parts - single exposure for obtaining three-dimensional information. A method using a high resolution line scan camera can be used in mass production to measure the bump height of wafers or the bump height of package substrates.

신채호와 노신 소설의 노예성 비판에 대한 비교 연구

김현주(Kim, Hyun-Ju) 한국어문학회 2014 語文學 Vol.0 No.125

The object of this thesis was Sin, Chae-Ho"s Fierce Battle of Dragon to Dragon and Lu Xun"s A lunatic’s diary and investigated the similarity and difference of the criticism of slavery and the aspect of its overcome. Two works criticize the cannibalistic society over thousands years and the enslaved men therein. The works reject the romanticism and ideality of revolution through establishment of characters like "elder and younger brother" and depict the change of reality through awareness of the public. Miri and dragon, and the lunatic and elder brother is an inseparable entity, a mirror that reflects each other, that lies in the environment in which conflict and enmity lasts holding two inner values. This establishment of character has the effect of reflecting the inner self-contradiction by nullifying the border between the good and the evil. Sin, Chae-Ho expands the epic with a radical revolution, while Lu Xun dreams of reformation by the way of infiltrating into the logics of reality. This difference might result from the context the two countries were in, colony and semi-colony. The fact, that Lu Xun was in the situation to be able to intervene deeply in the reality of China, while Sin, Chae-Ho was in the social status as a refugee difficult to contact directly with domestic people, might be a reason that makes a difference between two writers" narrative technique and imbodiment of character. The issue of slavery the two writers explored can not be seen as a problem of only feudalistic and imperial age. Under the structure of pressure, human being can anytime be recomposed as new slavery to settle down in the cannibalistic structure. The nowness and the meaning of this work can be found in that the enslavement is given rebirth beyond the age.

감마선 조사와 푸코이단/라미나린 병용처리가 돈육 패티의 품질에 미치는 영향

김현주,최종일,박진규,송범석,김재훈,윤요한,김천제,신미혜,변명우,이주운,Kim, Hyun-Joo,Choi, Jong-Il,Park, Jin-Gyu,Song, Beom-Seok,Kim, Jae-Hun,Yoon, Yo-Han,Kim, Cheon-Jei,Shin, Mee-Hye,Byun, Myung-Woo,Lee, Ju-Woon 한국축산식품학회 2009 한국축산식품학회지 Vol.29 No.1

The objective of this study was investigated to apply the fucoidan and laminarin extract from low-grade Undaria pinnatifida to real food product, a pork patty. Pork patties added with fucoidan and laminarin showed lower lipid oxidation and the inhibition against lipid oxidation was shown to be dependent on the irradiation doses. The Hunter color values of pork patty added with fucoidan increased significantly with an increase of irradiation dose. The hardness profiles of the patties with fucoidan and laminarin was decreased, but the amount of water in the patties was increased. Also, the combination of gamma irradiation and addition of fucoidan and laminarin was shown to be effective for the microbiological control. These results suggested that gamma irradiation and fucoidan and laminarin treatment showed the positive effect on microbial stability and quality of the pork patty.

자가동영상을 활용한 디브리핑 학습의 효과: 흡인간호 실습교육을 중심으로

김현주,Kim, Hyun-Ju 한국가정간호학회 2015 가정간호학회지 Vol.22 No.1

Purpose: This study was conducted to identify the effects of a suction care self video-based debriefing-assisted learning in the fundamentals of nursing practice for nursing students on clinical performance, self-efficacy and problem-solving process. Methods: A nonequivalent control group non-synchronized design study was used and included 97 junior nursing students at P University as participants, 48 of whom were assigned to the experimental group, and 49 of whom were assigned to the control group. The outcome measurements were clinical performance for suction care, self-efficacy, and the problem-solving process. Results: The scores of clinical performance were 23.75 in the experimental group who used the materials and 21.55 in the control group, and the difference was statistically significant (p<.000). Self-efficacy was 4.30 in the experimental group and 4.18 in the control group, which was a statistically significant difference (p=.000), and the pre-to-post differences of self-efficacy was statistically significant as well (p<.001). However, there were no significant differences in the pre-to-post differences of the problem-solving process (p<.802). Conclusions: Self video-based debriefing-assisted learning may be more effective in enhancing clinical performance and self-efficacy than that of conventional practice. Whether self-efficacy will contribute to enhanced learning motivation for nursing students needs further examination.

Additional use of autogenous periosteal barrier membrane combined with regenerative therapy in the interproximal intrabony defects: case series

김현주,김형민,이주연,Kim, Hyun-Joo,Kim, Hyung-min,Lee, Ju-Youn Korean Academy of Stomatognathic Function and Occl 2017 구강회복응용과학지 Vol.33 No.3

치간부 골내낭의 치주재생치료는 수술 후 발생할 수 있는 비심미성 때문에 치과의사에게 힘든 과제이다. 본 연구에서는 이러한 문제점을 해결하기 위해 치간부 골내낭의 bovine bone mineral과 enamel matrix derivative (EMD)를 이용한 재생 수술에 골막을 포함한 결합조직 이식을 동반한 임상증례를 소개하고자 한다. 임상적 및 방사선학적인 검사는 술 전과 수술 6개월 이후 시행하였다. 모든 임상 지표들이 개선되었고, 방사선학적 검사에서 골내낭이 감소함을 확인할 수 있었다. 또한, 부가적인 결합조직이식을 통해 치간부 연조직의 증대 및 형태 개선으로 인한 심미성이 증진되는 효과도 확인할 수 있었다. Regenerative therapy in an interproximal intrabony defect is a challenge due to unaesthetic appearance after surgery. In this article, we introduce a case series of additional use of autogenous periosteal barrier membrane combined with bovine bone mineral and enamel matrix derivative (EMD) in interproximal periodontal intrabony defects to overcome an aforementioned shortcoming. During the periodontal regenerative surgery, autogenous periosteal membrane was additionally adopted besides xenograft material and EMD. Clinical and radiographic examinations were performed before surgery and 6 months after surgical treatment. All clinical parameters were improved and the intrabony defects were resolved on the radiography 6 months after surgery. Moreover, soft tissue esthetics such as the contour of interdental papilla was better than that of conventional regenerative therapy. Periodontal regenerative therapy using several graft materials and bioactive materials was effective in the treatment of periodontal intrabony defect. Moreover, using of autogenous periosteal barrier membrane combined with xenograft and EMD has additional effect for the treatment of an interproximal intrabony defect in terms of augmentation of interdental soft tissue volume.

스마트폰 동영상을 활용한 자가관찰 방법의 자율실습이 간호학생의 핵심기본간호술 교육에 미치는 효과

김현주,Kim, Hyun-Ju 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.9

핵심기본간호술의 교육효과를 높이기 위한 방법으로 스마트폰 동영상을 활용한 자가관찰 방법의 자율실습이 간호학생의 자기주도적 학습능력, 핵심간호술기 수행능력, 수행자신감 및 실습만족도에 미치는 효과를 규명하기 위해 비동성 대조군 사후설계의 유사실험연구를 수행하였다. 대상자는 P대학교 간호학과 4학년을 대상으로 하였으며, 실험군 54명, 대조군 51명이었다. 연구결과 자기주도적 학습능력은 두 군간에 유의한 차이가 없었으나 실험군의 사전- 사후점수 차이에는 유의하게 향상되었다(p=<.001). 수혈간호, 수술전간호의 핵심간호술기 능력과 수행자신감, 실습 만족도는 두 군간의 유의한 차이가 없었다. 결론적으로 스마트폰 동영상촬영을 활용한 자가평가 학습법은 자기주도적 학습능력을 향상시켜 술기의 정확성과 숙련성을 갖출 수 있는 동기부여에 효과적인 방법이라 사료된다. This study was done to identify the effects of self-monitoring method using smartphone video on self-directed learning ability, competency in nursing skills self-confidence and practice satisfaction of nursing students. It was designed a quasi-experimental study with a pre-post test. The participants were 54 students in the experimental group and 51 students in the control group. There was no significant difference in self-directed learning ability (p = .450) between the groups, but there was a significant difference between the pre-post scores of the experimental group. There was no significants difference of competency in nursing skills, self-confidence and practice satisfaction between the two groups. In conclusion, the self-assessment learning method using smartphone video during the self-practice is considered to be an effective method to improve the self-directed learning ability and to ensure the accuracy and skill of the technique.

Development and Effect of Simulation Education Program including Interdisciplinary Communication for Nursing Students

김현주,Kim, Hyun-Ju The Korea Institute of Information and Commucation 2019 한국정보통신학회논문지 Vol.23 No.10

의사소통은 간호사가 대상자와의 치료적 관계 및 다양한 직종간의 협력관계를 형성하여 성공적인 간호중재를 이끄는데 있어 중요한 요소이며 이에 간호대학생들에게 효과적인 의료인 간의 의사소통 능력 함양 할 수 있는 의사소통 교육프로그램을 개발하고 그 효과를 분석하여 간호교육 전략을 모색하고자 하였다. 연구대상은 P 대학교 간호학과 4학년에 재학중인 학생 54명이며, 연구결과, 대상자의 의사소통명확성 (t=-7.75, p<.001)과 셀프리더십 (t=-4.43, p<.001)은 유의한 차이가 있었고, 의사소통 만족도는 교육 후에 점수가 증가하였으나 유의한 차이가 없었다 (t=-1.22, p=.226). 결론적으로 SBAR를 활용한 학제간 의사소통 교육프로그램은 간호대학생의 의사소통명확성과 셀프리더십에 긍정적인 효과가 있으며 다양한 시나리오의 개발과 반복 훈련을 할 수 있는 지속인 교육개발이 필요하다. Communication is an important factor for nurses to lead successful nursing interventions by establishing therapeutic relationships with the subjects and cooperative relationships between the various occupations. The purpose of this study was to develop a communication education program to nurse college students to improve communication skills among medical professionals and to analyze the effects of the program. The subjects of this study were 54 students in the 4th grade of P nursing. The results of this study showed that there was a significant difference between the subjects' communication clarity(t=-7.75, p<.001) and self-leadership (t=-4.43, p<.001). Satisfaction with communication increased after the training but there was no significant difference (t=-1.22, p=.226). In conclusion, communication program using SBAR has a positive effect on clarity of communication and self-leadership of nursing students, and it is necessary to develop continuous education that can develop various scenarios and repeat training.

경남지역 시설잎들깨에서 발생되는 육산 달팽이(병안목)의 종류

김현주,배순도,이준상,윤영남,최병렬,남민희,박정규,Kim, Hyun-Ju,Bae, Soon-Do,Lee, Jun-Sang,Yoon, Young-Nam,Choi, Byeong-Ryeol,Nam, Min-Hee,Park, Chung-Gyoo 한국응용곤충학회 2010 한국응용곤충학회지 Vol.49 No.4

The species of land snails (Stylommatophora) that feed on perilla plants were observed under leaf perilla greenhouses cultivated in the Milyang and Busan areas. Four species of land snails were recorded. Among them, three species were slugs, Meghimatium bilineatum in Phlomycidae, Deroceras reticula tum, and Limax marginatus in Limacidae, and one species was the snail Acusta despecta sieboldiana in Bradybaenidae. D. reticulatum occurred most frequently followed by A. despecta sieboldiana, L. marginatus and M bilineatum. Annually, land snails showed two peaks in the middle of April and in late November for D. reticulatum, early May to middle November for A. despecta sieboldiana, and middle April and early November for L. marginatus. M bilineatum, however, did not show any clear peak because of its low population occurrence. 밀양과 부산지역에서 시설잎들깨를 가해하는 육산 달팽이의 종류를 조사하였다. 총 4종의 달팽이류가 조사되었는데, 민달팽이류 3종, 즉 민달팽이과(Phlomycidae)의 민달팽이(Meghimatium bilineatum), 뾰족민달팽이과(Limacidae)의 작은뾰족민탈팽이(Deroceras reticulatum)와 두줄민달팽이(Limax marginatus), 그리고 달팽이과의 달팽이(Acusta despecta sieboldiana) l종 이었다. 달팽이류의 발생량은 작은뾰족민달팽이가 가장 많았으며, 다음은 달팽이>두줄민달팽이>민달팽이의 순이었다. 시설 잎들깨에서 달팽이류는 연중 2 번의 발생피크를 나타내었다. 즉, 작은뾰족빈달팽이는 4월 중순과 11월 하순, 달팽이는 5월 상순과 11월 중순, 두줄민달팽이는 4윌 중순과 11월 상순이었다. 하지만 민달팽이는 발생량이 매우 낮아 발생피크가 뚜렷하지 않았다.

무선 인지 기술 기반의 WRAN 시스템에서 숨겨진 인컴번트 시스템 검출 MAC 프로토콜

김현주,조경진,현태인,유상조,Kim, Hyun-Ju,Jo, Kyoung-Jin,Hyon, Tae-In,Yoo, Sang-Jo 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.12b

무선 인지 기술 환경에서 CR 기지국이 숨겨진 인컴번트 시스템의 등장으로 인해 CR 사용자와 통신이 불가하고 인컴번트 사용자가 간섭을 받을 때, 이를 해결하기 위한 시그널링 방법에 관한 것으로 숨겨진 인컴번트 시스템의 검출을 위한 프로토콜을 제안한다. 특히 아웃밴드 시그널링 검출 방법을 통해 상향링크 및 하향링크 프레임 구조를 이용하여 단말의 채널상태 보고 방법과 이에 대한 기지국의 확인방법 및 절차를 제안한다. 서로 다른 CR 기지국이 공존하는 방법으로 낮은 충돌 확률로 아웃밴드 시그널링 메시지를 전송할 수 있도록 하고 이 때 주파수 사용 효율을 높이기 위해 분할 주파수 대역을 사용한다. 이를 통해 무선 인지 기술에서의 신뢰성 있고 효율적인 아웃밴드 시그널링 프로토콜을 제안한다. In this paper, we propose a inband/outband broadcast method for hidden incumbent system detection of medium access control layer for wireless regional area network systems using cognitive radio technology. Through some extra channels that are not currently used, a short message is broadcasted. The message allows CPE detecting an appearance of incumbent system to send sensing report to CR BS. For the hidden incumbent system report message, the BS needs a process or method for allocation of upstream resource to CPEs. And transmitting multiple out-band signals has a possibility to collide with out-band signals of other co-located WRAN BSs. To avoid out-band signal collision, BSs randomly select it out-band signal broadcasting time within the pre-defined explicit out-band signaling, period. And fractional Bandwidth Usage allows WRAN BSs to efficiently use bandwidth.