• 대한전기학회논문지:시스템및제어부문D
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• 제52권11호
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• pp.657-661
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• 2003

In this paper, we designed a portable digital pressure algometer which not only can measure the pain level objectively and quantitatively, but also is able to do RF communication. This system consists of pressure sensor for pain measurement, analog signal analysis, digital hardware based on PIC16C73B, RF communication and display. To evaluate the performance of the developed system, we measured pressure threshold using commercial analog PA(Pressure Algometer) and the proposed system, and then evaluated the correlation and confidence. Using linear regression analysis, standard deviation of 0.1731 and R-square value of 99.3% were obtained. In conclusion, the above results showed good performance and its usability in measuring the pain clinically.

• Imaging Science in Dentistry
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• 제41권1호
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• pp.7-10
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• 2011

Purpose : The purpose of this study was to compare the conventional and digital radiography in the estimation of working length in mandibular molars. Materials and Methods : Sixty molar teeth were selected and divided into three groups in the basis of canal curves (0-$15^{\circ}$, 15-$30^{\circ}$, > $30^{\circ}$). After the placement of a 15 K-file, radiographs were taken with a conventional film (Fspeed) and a digital sensor. Canal lengths were measured in these images by two observers. Statistical analysis was performed with repeated measures of ANOVA and paired sample t-test with 95% confidence. Results : There was a high inter-observer agreement on the measurements of working length in conventional and digital radiographs. There was no significant difference between the mean values of measurements in conventional and digital radiography. Moreover, there was no significant difference between conventional and digital radiography with the actual values in the basis of canal curves. Conclusion : The accuracy of conventional and digital radiography in the determination of the working length was in an acceptable range.

• Imaging Science in Dentistry
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• 제33권2호
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• pp.71-77
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• 2003

Purpose : To evaluate and compare the efficacy of digital radiographic images in the detection of bone loss at the bifurcation area of the mandibular first molar with traditional film-based periapical radiographs, Materials and Methods : One dried human mandible with minimal periodontal bone loss around the first molar was selected and an artificial alveolar bone defect at the bifurcation area was serially prepared over 18 steps. Images were taken using a direct CCD-based system and with F-speed periapical films. The images were evaluated by seven interpreters (3 radiologists, 3 periodontologists, and 1 general dentist) using a 5-point confidence rating scale. Results : The readability of both periapical radiographs and digital image increased as the size of the artificial lesion and exposure time increased (p < 0.05). Periapical radiographs offered greater readability of smaller bone defects than digital images, and the coefficient of variation of mean score between periapical radiographs and digital images showed a significant difference. Conclusion : The experimental results indicate that a significant difference in the coefficient of variation of mean score exists between periapical radiographs and digital images, and that traditional film-based periapical images offer greater readability of smaller bone defects than digital images can presently offer.

• 디지털융복합연구
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• 제4권1호
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• pp.55-71
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• 2006

The Public Service Charter is one of the administrative reform programs introduced to promote customer oriented administration. It's main purpose is to achieve citizens' confidence in the government by satisfying them with elevated quality of the public services. This study focuses on analyzing current conditions and achievements of the Public Service Charter in the Republic of Korea and proposing it's development plan. Since it was introduced to Korea in 1998, the Public Service Charter has been disseminated and contributed to the spreading of the citizens' understandings of the government's initiatives for customer satisfaction plans. Still, it has several problems as follows; A lot of public servants and citizens lack in understandings of this program. CEOs don't have enough concern in it. Evaluation is not organically connected to performance management. The correction and compensation procedure are not well operated. To solve these problems, the government needs to set up an institutional foundation establishing a legal base, uplifting CFO' concerns, and building a department with full responsibility, and to promote employees and citizens' participation through education and PR. It's also important to enhance post management by efficient evaluation and performance management, substantial correction and compensation procedure.

• 디지털융복합연구
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• 제6권2호
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• pp.145-155
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• 2008

The purpose of this research is to investigate the effects of the Cyber Home Learning Motivation Factors on its satisfaction and activation through surveying the actual conditions among the students present at a cyber home learning class. For this study, samples were collected around the end of a term from the students(300 in pilot test and 248 in main test) who were taking Cyber Home Lecture at high school level. Structural equation model by AMOS 5.0 was used to analyze the data. The result of our analysis is summarized as follows. First, the cyber home learning satisfaction has a positive effect on the cyber home learning activation. Second, the 4 factors of the cyber home learning motivation: relevancy, self-confidence and satisfaction has a positive effect on the cyber home learning satisfaction. But the factor 'attention' has no positive effect on the cyber home learning satisfaction. Therefore, the Good Cyber Home Learning Contents should provide the information quality which meets 3 conditions: relevancy, self-confidence and satisfaction.

• 디지털융복합연구
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• 제12권12호
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• pp.293-301
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• 2014

본 논문에서는 데이터 마이닝에 필요한 클러스터링과정에서 불필요한 정보를 감축하기 위하여 베이지언 사후확률의 신뢰도를 이용한 새로운 척도를 제안한다. 데이터 감축을 위한 속성의 중요도가 클러스터링의 결과에 지배적이기 때문에 많은 속성의 변별력을 향상시키기 위하여 사후확률의 신뢰도에 정보 엔트로피를 적용하였다. 제안된 사후확률을 기반으로 한 러프 엔트로피 척도에 의한 속성의 신뢰도의 중복성은 엔트로피의 자연로그에 의하여 상당히 줄어든다. 따라서 제안된 척도에 의하여 생성된 군집화 알고리즘은 속성값의 변별력을 향상시켜 기존의 리덕트를 최소화하였고, 이는 분할의 효율성을 향상시킬 수 있었다. 제안된 알고리즘의 검증을 위해 패턴분류 문제에 적용되는 ACME 데이터에 대하여 속성간의 변별력, 분할결과에 따른 분할의 순정도를 기존의 알고리즘과 비교 분석하였다.

• 디지털융복합연구
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• 제10권7호
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• pp.207-212
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• 2012

본 연구는 정치인들의 용모가 미디어 수용자인 유권자의 정서와 투표에 미치는 영향을 살펴본 실험 연구이다. 그동안 자세, 제스추어, 메이컵 등과 같은 비언어적 단서들에 관한 연구는 다수 진행되어 왔으나, 정치 후보의 얼굴에 표현되어지는 안경착용이 유권자에 미치는 영향에 관한 연구는 찾아보기 어렵다. 따라서 본 연구에서는 지방선거 TV연설에 노출된 대학생 피험자들을 대상으로 정치 후보의 안경 착용이 미디어 수용자에게 미치는 영향을 실험을 통해 살펴보았다. 연구결과 TV연설에서 정치 후보자의 안경 착용은 유권자의 친근감과 신뢰감에는 영향을 미치지 못하였으나, 유권자의 호감도와 지지도에는 정적인 영향을 미치는 것으로 나타났다.

• 디지털융복합연구
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• 제20권1호
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• pp.481-488
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• 2022

본 연구는 시뮬레이션 학습과 간호역량의 관계를 확인하기 위하여 국내 4개 대학에서 시뮬레이션 수업을 수강한 경험이 있는 간호학과 대학생 130명을 대상으로 온라인을 통해 자료를 수집했다. 대상자의 일반적 특성 및 시뮬레이션 수업에 대한 유용성과 중요성 인식, 만족도와 자신감, 수업방식, 설계, 그리고 간호역량을 자가보고식으로 조사했다. 시뮬레이션에 대한 유용성과 중요성 인식은 간호역량의 사정, 임상적 판단과 양의 관련성이 있었고 학습자의 만족도와 자신감은 전반적인 간호역량 및 환자안전과 양의 관련성이 있었다. 교수자의 수업방식과 설계 역시 전반적인 간호역량과 양의 관련성이 있었으며, 나이와 설계는 간호역량을 21.5% 설명하는 예측요인이었다. 간호역량을 개발하기 위한 시뮬레이션 적용에는 참여자의 만족도와 자신감을 고려할 필요가 있으며, 교수자의 수업방식과 설계를 체계적으로 다양화 시킬 필요가 있다.

• 디지털산업정보학회논문지
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• 제19권2호
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• pp.147-160
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• 2023

Unlike other currencies, cryptocurrency is not a currency used for general transactions, but is currently applied to various investment assets and its scope is expanding. The purpose of this study is to the effect of personal characteristics on investment intention. As a theoretical background, it was verified by applying the Extended Technical Acceptance Model (ETAM). self-confidence propensity, bandwagon propensity, risk tolerance propensity, network externality, attitude, and Investment intention were composed of variables. The research method collected data from 871 people who had experience in cryptocurrency investment through a survey and analyzed it after excluding the data of 71 people who were judged to be inappropriate. The structural equation modeling method using AMOS was used. As a result of this paper, five hypotheses were accepted as statistically significant. This study concluded that self-confidence propensity, bandwagon propensity, risk tolerance propensity, network externality, and attitude had statistically significant effects on Investment intention. In this respect, this study will be able to provide useful information for cryptocurrency research.

• 디지털융복합연구
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• 제18권6호
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• pp.389-399
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• 2020

본 연구는 간호학생을 대상으로 플립러닝을 활용한 기본간호학 실습이 핵심기본간호술 수행자신감, 학업 성취도 및 비판적 사고성향에 미치는 효과를 파악하고자 수행되었다. 연구 참여자는 D대학 간호학과 2학년에 재학 중인 실험군 38명, 대조군 36명이었으며 실험군에게는 플립러닝 수업을 대조군에게는 기존의 수업 방식을 4주간 적용하였다. 연구결과 실험 후 플립러닝 수업을 실시한 실험군의 활력징후 학업 성취도가 대조군에 비해 통계적으로 유의하게 높았으나(t=2.921, p=.005) 나머지 변수들은 통계적으로 유의하지 않았다. 실험군과 대조군 모두 실험 전후 비판적 사고성향이 증가하였으나 대조군의 비판적 사고성향은 그 차이가 통계적으로 유의하지 않았고, 실험군의 비판적 사고성향은 실험 전에 비해 실험 후 통계적으로 유의하게 상승하였다(t=-2.277 p=.029). 향후 간호학에서 플립러닝을 활용한 다양한 연구가 필요하다.