• 한국한의학연구원논문집
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• 제8권2호통권9호
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• pp.37-46
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• 2002

Clinical trials are experimental studies with human subjects in which various limitations and variables exist by their nature. As a preparatory stage for designing clinical trials in Oriental medicine, this study considers a virtual protocol to show guideline regarding tasks necessary when writing a trials protocol. Clinical trials have many difficulties in planning, procedure, and interpretation of results, and these may be influenced by various biases that are difficult to predict and eliminate. To deal with these issues, clinical trials need a collaboration between medical experts and biostatisticians from the beginning, through the entire trial, until the final analysis. Therefore, the first stage of clinical trials is to write out a trial plan among the experts in each field to derive the best design for the trial.

• Human Ecology Research
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• 제52권2호
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• pp.189-198
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• 2014

The purpose of this study was to examine the effects of the We Start center visiting intervention program on the positive changes in the developmental areas and literacy interests of young children from low-income families. The subjects were 195 young children (109 in the experimental group, M=71.7 months; 86 in the control group, M=73.3 months) living in We Start areas (Ansan, Gwangmyeong, and Suwon cities) of Gyeonggi-do. The We Start center visiting intervention programs were conducted for 30-34 weeks in each city, and pre-tests and post-tests were conducted before and after the intervention programs. The instruments used were the developmental checklist and the literacy interests test The developmental checklist consisted of 7 domains (personality & sociality; language, reading, & writing; scientific thinking; mathematical thinking; arts; social learning; and physical development). The literacy interests test consisted of 2 factors (interest in literacy and interaction during activity). The scores on the developmental checklist showed positive changes in several domains (personality & social development; language, reading, & writing ability; scientific thinking; and social learning), but not in mathematical thinking, arts, and physical development. Second, the results of the literacy interests test showed positive effects on interaction during activity and the total score. In conclusion, the We Start center visiting program for young children from low-income families is an effective early intervention program to end the intergenerational transference of poverty in Korea.

• 한국소음진동공학회논문집
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• 제19권6호
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• pp.614-619
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• 2009

The STW(servo track writing) system which is the process of writing servo signals on disks before assembling in drives uses the spindle motor-chuck mechanism to realize low cost because the spindle motor-chuck mechanism has merit which can simultaneously write multi-disk by piling up disks in hub. Therefore, when the spindle motor-chuck mechanism of horizontal type operates in high rotation speed it is necessary to reduce the effect of RRO(repeatable run-out) and NRRO(non-repeatable run-out) to achieve the high precision accuracy of nano-meter level during the STW process. In this paper, we analyzed that the slip in assembly surfaces can be caused by the mechanical tolerance and clamping force in hub-chuck mechanism and can affect NRRO performance. We designed springs for centering and clamping considering centrifugal force by the rotation speed and assembly condition. The experimental result showed NRRO performance improves about 30 % than case of weak clamping force. The result shows that the optimal design of the spindle motor-chuck mechanism can effectively reduce the effect of NRRO and RRO in STW process.

• 대한기계학회논문집A
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• 제28권11호
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• pp.1794-1798
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• 2004

We present a fabrication method of high aspect ratio 100nm-scale nickel stamper using e-beam writing for the injection molding of optical grating patterns. Conventional nickel stamper is fabricated by nickel electroplating process which is followed by seed layer deposition. In this paper, we have used chrome coated blank mask without anti-reflection layer of CrON in order to simplified electroplating process. In experimental study, we have optimized electron-beam dosage for 100nm-scale optical grating patterns with 2.5-aspect ratio, and fabricated nickel stamper using above grating patterns as PR mold. Fabricated nickel stamper have showed height of 240$\pm$20nm and width of 116$\pm$6nm.

• 생약학회지
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• 제25권2호
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• pp.153-159
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• 1994

The studies were conducted to investigate the inflammation, gastric ulcer, analgesic and homothrmic of experimental animals by KYUNG OK-KO water extract and drink, which is a traditional preparation in Korea. 1. It was exhibited significantly anti-inflammatory effects to acute inflammation on carragennan edema, and preventive and therapeutic effects to chronic inflammation on Freund's complete adjuvant in rats(100, 200, 400 mg/kg). Especially, preventive effect of KYUNG OK-KO water extracts at doses of 100, 200, 400 mg/kg in rats were showed dose-dependantly. 2. Aspirin-induced gastric ulcer were remarkably repaired by all experimental groups of KYUNG OK-KO water extracts. 3. The number of writing syndromes by acetic acid induced also were decreased which MPI's test was increased by tail flick apparatus in mice remarkably, all doses of water extracts(100, 200, 400 mg/kg) and dose-dependantly. 4. Aminopyrine-induced homothermic effects of KYUNG OK-KO water extract(100, 200, 400mg/kg) and drink (0.7, 1.4, 2.1 ml/kg) were significantly evaluated dose-dependantly in 400 mg/kg, 2.1 ml/kg groups.

• 대한전자공학회논문지SD
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• 제37권9호
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• pp.31-37
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• 2000

광굴절 부피격자에 집속되는 판독빔이 입사될 때 나타나는 각도 선태 특성을 기하학적으로 해석하고 실험결과를 제시하였다. 해석 결과 각도 선택 특성은 판독빔의 입사조건에 의해 결정되며, 기록빔의 입사조건에 독립적인 특성을 보였다. 제시된 각도 선택 특성 이론의 증명을 위해 기록빔의 입사각, 판독비의 폭, 집속렌즈의 초점거리에 대한 각도 선택 특성을 측정하였다. 실험 결과 기록빔의 외부 교차 반각이 8$^{\circ}$, 10$^{\circ}$, 14$^{\circ}$일 때의 각도 선택 특성은 각각 2.632$^{\circ}$, 2.618$^{\circ}$, 2.604$^{\circ}$로 기록 조건에 무관한 특성을 얻은 반면 동일한 기록빔의 입사각에 대해 판독빔의 폭을 9.7mm, 2.11mm로 조정한 경우 2.632$^{\circ}$, 1.588$^{\circ}$의 특성을 보임으로써 판독빔에 의해 각도 선택 특성 제어가 이루어짐을 볼 수 있었다.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.585-595
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• 2017

본 연구는 정서기반 학습동기향상 프로그램이 전문대학생의 학습동기와 사회적 지지에 어떠한 영향을 미치는지를 알아보는데 목적이 있다. 개발된 최종 프로그램은 학습동기 I, 학습코칭, 학습동기 II로 총 12회기로 구성되어 있으며, 각 회기마다 자기평가 및 성찰일지를 작성하여 성찰 시간을 갖도록 진행하였다. 연구대상은 G시 소재 K전문대학 재학생들 중 2016학년도 1학기 심리학 관련 교양 교과목을 수강한 공학계열 재학생 38명으로, 실험집단 19명과 통제집단 19명을 비확률 표본 추출에 의거 배치하였다. 실험집단에는 정서기반 학습동기향상 프로그램을 주 강사 1명과 보조 강사 1명 총 2명의 강사로 한 주에 1회기씩 총 12회기가 실시되었고, 자료 분석을 위하여 독립표본 t-검증, 대응표본 t-검증, 회기별 소감문 분석이 실시되었다. 연구결과는 첫째, 정서기반 학습동기 향상 프로그램에 참여한 실험집단은 통제집단에 비하여 학습동기와 하위요인 자신감, 만족감에 유의미한 차이가 있었다. 둘째, 정서기반 학습동기 향상 프로그램에 참여한 실험집단은 통제집단에 비하여 사회적 지지에서는 통계적으로 유의미한 차이가 나타나지 않았다. 참여 학생들의 소감문 분석에서는 본 프로그램이 학습동기와 사회적 지지에 영향을 미치는 것으로 나타났다. 마지막으로 본 연구결과에 대한 논의 및 함의를 기술하였다.

• 대한지구과학교육학회지
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• 제14권2호
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• pp.159-172
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• 2021

이 연구는 온라인 과학 수업에서 실험 활동과 상호작용의 개선을 위한 수업 전략을 계획하고 그 결과를 바탕으로 개선 방안을 제시한 실행연구이다. 이를 위해 2020년 7월7일부터 9월 9일까지 G광역시에 위치한 초등학교 6학년 학생 20명을 대상으로 '지구와 달' 단원 수업을 실행하였다. 수업을 위해 실험 활동 범주에서 스마트 기기와 대체 실험, 상호작용 범주에서 온라인 대화방과 질의응답 전략을 계획하였다. 수집한 자료 중 수업 활동지, 과제물, 성찰 일지, 온라인 대화 내용, 질의응답 내용을 주요 자료로 하여 매트릭스에 입력하고 분석적 텍스트를 작성하여 그 의미를 분석하였다. 실행 결과 스마트 기기와 대체 실험은 탐구의 기회를 제공하였으나 오개념 형성에 대한 위험이 있었고 실험 활동을 방해하기도 하였다. 온라인 대화방과 질의응답은 소통의 기회와 과학 개념의 점검과 피드백 기회를 제공하였다. 본 실행연구를 통해 연구자는 수업 반성 노트를 작성하며 수업을 반성할 수 있었고, 과학 수업의 효과성과 효율성 측면에서 스마트 기기의 역할을 제안하였다.

• Journal of Information Technology Applications and Management
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• 제24권4호
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• pp.57-69
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• 2017

Due to the development of technology even in learning and education area, many studies have begun to make a new attempts to research by using SNS, breaking away from traditional learning methods. However, the limitations of these studies are restricted only to the use of wireless Internet and writing on Web sites. This study aims to conduct a research on English learning activities that utilize various technologies such as Bigdata, Facebook, Social Network Services (SNS) and English applications. In addition, this study looks into how these modern technologies can be integrated in the classrooms and which activities can be applied in the English classroom. This research is to suggest effective English learning methods through a thorough investigation on the effectivity of various technologies based on the Web 2.0 such as Flickr, blogs, MySpace, and online discussion board within the context of the English learning. To verify the effect of the study, the subjects are divided into experimental and control group. The experiment is proceeded with pre- and post-test. The experimental group is designed to verify the effects using SNS tools such as Facebook, Bigdata, and Online Massive Learning. A survey is conducted to determine the preference of utilizing social networking sites and to analyze the effects in class. The result is that the average scores for experimental group have improved more than the average of control group. The comparison of pre and post-test of the experimental group shows that the significance of the higher and median group was statistically significant at the p<0.01.

• 한국간호교육학회지
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• 제27권2호
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• pp.152-162
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• 2021

Purpose: The purpose of this study was to examine the effect of nursing record education on the knowledge and performance of nursing record of nurses at small- and medium-sized hospitals. Methods: The participants were 62 nurses working in two small- and medium-sized hospitals. Thirty-two nurses comprised the experimental group, and 30 nurses comprised the control group. Nursing record education was provided for the experimental group. Data were analyzed by x²-test and t-test analysis using the IBM SPSS statistics 25.0 Program. Results: After education, the knowledge (t=2.43, p=.019), performance (t=2.19, p=.033) and behavior scores (t=2.42, p=.018) on nursing record were significantly higher in the experimental group than in the control group. Based on this result, nursing record education is an effective intervention to improve nurses' knowledge and performance in writing nursing records in small- and medium-sized hospitals. Conclusion: We suggest the development of a systematic and standardized education program on nursing record including its legal aspects, for nurses in small- and medium-sized hospitals. The results of this study can be used as basic data for developing a nursing record education program for small- and medium-sized hospitals.