• 융합신호처리학회논문지
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• 제14권4호
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• pp.217-221
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• 2013

최근, 이진 특징 기술자를 생성하는 방법에 대한 연구가 많이 진행되고 있다. 이진 특징 기술자의 정합은 비트 연산에 기반한 해밍거리를 이용하므로 실수 연산에 기반한 유클리디안 거리를 이용하는 기존의 일반적인 특징 기술자의 정합보다 훨씬 효율적이기 때문이다. 그러나, 특징 수의 증가는 정합 속도를 선형적으로 감소시키는 원인이 되기 때문에, 객체 추적과 같은 실시간 처리가 중요한 응용 분야에서는 이진 특징 기술자의 정합 속도를 더욱 향상시킬 수 있는 방법에 대한 요구가 증가해 왔다. 이에 본 논문에서는 고차원의 이진 특징 기술자를 여러 저차원의 이진 특징 기술자로 나누어 부분 해밍거리를 계산하고 순차적으로 분석함으로써, 정합 속도는 크게 개선하면서도 정확도는 유지할 수 있는 방법을 제안한다. 제안된 방법의 효율성을 분석하기 위해 기존의 정합 방법들과의 비교 실험을 수행한다. 아울러, 제안된 고속화 방법의 성능을 극대화하기 위한 이진 특징 기술자 생성 방법에 대해서도 논의한다. 몇가지 생성 방법에 대한 성능을 분석함으로써, 가장 효과적인 방법을 모색한다.

• 영재교육연구
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• 제20권1호
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• pp.131-150
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• 2010

본 연구는 영재 선발의 자료로써 활용될 수 있는 학생들의 글쓰기 능력을 파악하기 위해 초인지 사고 수준에 따른 과학글쓰기의 경향성을 분석하는 데 목적을 둔다. 이를 위해 비판적 사고력과 문제해결력을 측정할 수 있는 서술형 초인지 검사도구를 개발하고, 이를 이용하여 학생들의 초인지 사고 수준을 측정하였다. 이후 예상하는 글, 설명하는 글, 주장하는 글, 비판하는 글, 상상하는 글 등의 과학글쓰기 과제를 통해 초인지 사고 수준에 따른 과학글쓰기 경향성을 분석하였다. 그 결과 초인지 사고수준에 따라 학생들의 글쓰기 능력에 차이가 있음을 밝혔다. 초인지 사고 수준이 낮은 학생들은 생각한 것을 잘 표현하지 못하였으며, 초인지 사고 수준이 높은 학생들은 집중도가 높아 자신의 표현상 약점을 깨닫고 글의 완성도를 높이려는 경향이 나타났다. 이로부터 영재 선발의 자료로써 과학글쓰기의 활용 가능성을 알 수 있었다.

• 한국언론정보학보
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• 제57권
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• pp.160-180
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• 2012

이 연구에서는 중앙지와 지역일간지가 인천경제자유구역 개발 뉴스를 어떻게 보도했으며, 이 과정에서 언론이 어떤 방식으로 역할을 했는지를 살펴보았다. 중앙지와 지역일간지 간에 현실 재구성, 뉴스보도 가치 등의 차이점을 발견하는데 주력했다. 보도방식은 고전적인 형식에 최근 경향을 적절히 반영하고 있음이 확인됐다. 지역 현안을 바라보는 조선일보의 시각은 찬 반의 명확한 태도에서 벗어난 중간자적 입장을 취했으며 반면 경인일보는 감시자의 입장에 서 있었다. 즉 전국을 취재 권역으로 한 중앙지는 지역 이슈에 대해 관망적인 자세를 보였고, 해당 지역을 중심으로 기사를 작성하는 지역일간지는 적극적인 보도 태도를 취했다. 이런 뉴스구성 태도는 실제 지면으로 이어지는 기준인 뉴스가치에도 그대로 반영됐다. 조선일보는 정치적 영향성에, 경인일보는 문화적 유사성에 집중하고 있었으며, 인천경제자유구역 개발 뉴스는 매체 간 구분 없이 대체적으로 경제적 중요성과 인간적 흥미성은 높았고 선정성 및 규범적 일탈성은 낮았다.

• 치위생과학회지
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• 제13권3호
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• pp.281-289
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• 2013

본 연구는 구강건강을 중심으로 노인의 삶의 질에 관련된 요인을 찾아내어 향후 노인의 삶의 질을 향상시키기 위한 국가 정책 수립 평가에 기초자료로 제시하고자 한다. 연구 분석 자료는 2007년 7월부터 2009년 12월에 실시한 국민건강영양조사 4기 원시자료로부터 구강검진을 받은 만65세 이상 노인 3,882명의 자료를 활용하였으며 IBM SPSS Statistics 19.0 프로그램을 이용하여 분석하였다. 연구 결과는 잔존치아 수가 많을수록, 국소의치 및 총의치를 필요로 하지 않는 경우 삶의 질이 높았다. 따라서 보철물이 없는 치아 상실이 삶의 질에 크게 작용하므로 잔존치아 수를 증가시키는 노력과 함께 노인에게 치과 보철물 장착을 하여 구강건강을 회복시키는 것이 시급한 과제라고 생각된다.

• 산업융합연구
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• 제18권1호
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• pp.65-71
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• 2020

최근 프로 스포츠에서는 데이터를 활용하는 분야가 주목을 받기 시작하였다. 데이터 활용 분야는 경기 내적으로 파생되는 클래식 기록 뿐만 아니라, 효율성을 강조한 2차 기록도 적극적으로 활용되고 있다. 이에 본 연구에서는 경기 외적인 데이터인 일일 평균 습도를 통하여 투수들의 탈삼진 능력과의 상관관계를 연구하고자 한다. 이를 위하여 KBO리그에 소속된 10개 팀의 홈구장과 보조구장에 소재한 지역의 일일 평균 기록을 참고로 하였고, 선발 투수와 구원 투수들의 특성을 파악하기 위하여 다승, 홀드, 세이브 부문의 상위 5명 씩의 K/9기록을 대상으로 분석하였다. 본 연구결과를 통하여 선발 투수와 구원 투수와의 K/9 기록에 유의미한 차이를 발견하였으며, 프로 스포츠의 데이터 활용에 대하여 학문 및 산업 전반의 발전을 기대할 수 있다.

• Korean Journal of Acupuncture
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• 제19권1호
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• pp.47-56
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• 2002

The frequency of the hypertension is increasing as the life level is improved and an average span of the life is extended since we approached modern stage. The hypertension is also dangerous disease which raises fatal complication for example with the bleeding aproplexy and the ischemic attack. The medicinal treatment about the hypertension is required patients to take continually. The acupuncture have been introduced because a medicine-chemical treatment hasn't good influence on the human body. It recently has been processed that studies acupuncture effect for blood pressure and have been found out that blood pressure go down. The object of this study observe the effect of LR3 acupuncture on hypertension in Renal Hypertension RAT induced by 2K1C. The 2K1C model was based on renin-angiotensin system. We put the silver clip in renal artery to induce renal hypertension. We try to observe that LR3 acupuncture influence on the blood pressure and c-fos expression in CVLM, NTS, RVLM. In results, the blood pressure was decreased during acupuncture than before acupuncture, after acupuncture. The heart rate was also decreased during acupuncture than before acupuncture, after acupuncture. The LR3 acupuncture significantly effects on blood pressure and heart rate (P<0.05). The increased expression of c-fos was shown in CVLM, NTS, but not in RVLM. In conclusion, LR3 was relived the action of control upon the hypertension and related with medulla, particularly CVLM, NTS. It needs to be closely examined pharmacological mechanism and studied combination with other acupoints.

• 한국식품영양학회지
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• 제21권2호
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• pp.218-226
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• 2008

This study examined the preference and consumption of chungkukjang among elementary school children in Seongnam, Korea. The subjects included 583 students(male 300, female 283) who were asked to fill out a questionnaire. The collected data were analyzed using the SAS package. The results showed that 91.9% of the female students, 91.6% of children from nuclear families, and 90.7% of children with stay-at-home mothers, consumed chungkukjang. Among the children who had eaten chungkukjang previously, most had consumed it at home, and 65.5% of the students responded that chungkukjang was tasty. The data also revealed that female students, children from nuclear families, and those with stay-at-home mothers had greater preference for chungkukjang than male students, children from extended families, and those with working mothers. When asked why they dislike chungkukjang, both male and female students who had eaten it responded because 'it smells bad' and that 'it is not tasty'. However, among the students who had never eaten it, the male students replied because 'it is not tasty'(33.3%) and that 'it is not eaten at home'(27.8%), and the primary responses of the female students were 'it is not eaten at home'(65.2%) and 'it is not tasty'(21.7%). However, the subjects who had tried chungkukjang previously answered that in the future they would like to have it more frequently, as compared to the subjects who had never eaten chungkukjang. Therefore, to increase knowledge and improve perceptions of chungkukjang foods, families should give children many opportunities to try them, and in return, children will consume chungkukjang foods with pride. Furthermore, it is important that society as well as mass media, which have great influence on children, show concern and offer support in promoting chungkukjang.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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• pp.658-658
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• 2013

Graphene is an attractive material for various device applications due to great electrical properties and chemical properties. However, lack of band gap is significant hurdle of graphene for future electrical device applications. In the past few years, several methods have been attempted to open and tune a band gap of graphene. For example, researchers try to fabricate graphene nanoribbon (GNR) using various templates or unzip the carbon nanotubes itself. However, these methods generate small driving currents or transconductances because of the large amount of scattering source at edge of GNRs. At 2009, Bai et al. introduced graphene nanomesh (GNM) structures which can open the band gap of large area graphene at room temperature with high current. However, this method is complex and only small area is possible. For practical applications, it needs more simple and large scale process. Herein, we introduce a photosensitive graphene device fabrication using CdSe QD coated nano-porous graphene (NPG). In our experiment, NPG was fabricated by thin film anodic aluminum oxide (AAO) film as an etching mask. First of all, we transfer the AAO on the graphene. And then, we etch the graphene using O2 reactive ion etching (RIE). Finally, we fabricate graphene device thorough photolithography process. We can control the length of NPG neckwidth from AAO pore widening time and RIE etching time. And we can increase size of NPG as large as 2 $cm^2$. Thin CdSe QD layer was deposited by spin coatingprocess. We carried out NPG structure by using field emission scanning electron microscopy (FE-SEM). And device measurements were done by Keithley 4200 SCS with 532 nm laser beam (5 mW) irradiation.

• 산경연구논집
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• 제10권11호
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• pp.57-69
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• 2019

Purpose: The purpose of this study is to investigate systematic and comprehensive explanation about safety behavior by applying integrated model of Theory of Planned Behavior (TPB) and Social Cognitive Theory (SCT). By showing the interrelationship of effects of factors affecting safety behavior in a single model, comprehensive understanding regarding safety behavior will be possible. Research design, data, and methodology: This study try to integrate the two theory, TPB and SCT, to introduce background factors, such as safety culture, affecting cognitive factors of subjective norm, safety attitude, perceived behavioral control, safety consciousness, which are again affecting behavior intention of the TPB. We composed 73 questionnaire to analyse the relationship among factors affecting safety behavior. The questionnaire were distributed to stewards and stewardesses of KAL, ASIANA, and LCCs. 422 were collected and used for analysis. Factor analysis, regression analysis, and control effect analysis were conducted using SPSS windows version 2.0. Results: The safety culture, safety atmosphere, and safety education/training were turned out to affect subjective norm, safety attitude, perceived behavioral control, safety consciousness. And the cognitive factors also showed to affect safety intention significantly. The results that safety intention affects safety behavior was found. Also there are control effect of cost consciousness and punishment while safety intention affects safety behavior. Conclusions: Safety is the virtue that should be given first priority to in our daily life. To secure safety, everyone in an organization should have high level of safety intention and conduct safety behavior. The study results provide systematic and comprehensive understandings on the relationship among factors affecting cabin crews' safety behavior. The results will help design safety related regulations, education/training, and support employees to engage in safety behavior related activities.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2016년도 추계학술대회 논문집
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• pp.117-117
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• 2016

Total ankle replacement (TAR) is a visible option in the surgical treatment of degenerative or inflammatory diseases of ankle joint. it is attributed to the current TAR which has improvements in surgical technique, uncemented implant fixation and minimally constrained articulation. In the clinical result, they can show promised surgical result when compared to earlier attempts in TAR. However, TAR is still not as successful as total knee replacement (TKR) or total hip replacement (THR), it needs to be note that there are limitations in concerning of long term performance of TAR, the high failure rate still associated with wear of the PE (polyethylene) component that has related with their material property and surface roughness. The aim of this study was to introduce the tribology characteristics of total ankle joint prosthesis with one of TDR model which was fabricated to try multi-axis wear test as a region of motion in ankle joint. The wear specimen of TDR was prepared with Ti-6Al-4V alloy and UHMWPE (ultra-high molecular weight polyethylene) for tibia-talus and bearing component, respectively. A wear test was carried out using a Force 5 (AMTI, Massachusetts, US) wear simulator which can be allowed to move in three axis to flexion-extension ($+3^{\circ}{\sim}-6^{\circ}$), internal-external axial rotation (${\pm}5^{\circ}$), as well as sinusoidal compressive load (1.6 kN, R=10). All tests were performed following standard ISO 14243, wear rate was calculated with weight loss of UHMWPE bearing while the specimen has tested at certain cycles. As based on the preliminary results, wear rate of UHMWPE bearing was $7.9{\times}10^{-6}mg/cycles$ ($R^2=0.86$), calculated loss weight until $10^7cycles$ was 79 mg, respectively.