• 융합보안논문지
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• 제3권3호
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• pp.75-80
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• 2003

one-way 함수는 패스워드와 같이 compute는 쉽고 invert는 어렵다는 의미를 갖는 함수로서 암호기법에서 매우 중요한 역할을 하고 있으며, 특히 encryption schemes 의 존재성은 바로 one-way 함수의 존재성을 필요로 하고 있음은 잘 알려진 사실이다. 본 연구에서는 기존 암호기 법에 존재하는 one-way 함수들을 분석하고 또한 one-way 함수가 될 수 있는 여러 가지 형태의 함수들을 조사 연구함으로써 다양하고 안전한 encryption schemes을 갖추기 위한 근원을 제공한다. one-way 함수의 종류, 역할과 그 특성을 살펴보고 one-way 함수의 일반적인 조건을 통하여 one-way 함수가 될 수 있는 여러 가지 함수들을 조사하고, one-way 함수와 trapdoor 함수에 대한 이론적 특성을 논하였다.

• Restorative Dentistry and Endodontics
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• 제31권6호
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• pp.445-451
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• 2006

이 연구에서는 미세인장결합강도 실험과 주사전자현미경을 이용하여 unground enamel에 대한 all-in-one adhesive의 1회 또는 2회 적용에 따른 효과를 평가하였다. 발거된 하악 대구치의 설측 치관부를 사용하여 3개씩 5개의 군으로 분류하였다. SE군은 Clearfil$^{tm}$ SE Bond를 적용하였다. LP1 군, LP2 군은 Adper Prompt L-Pop$^{tm}$을 각각 1회 , 2회 적용하였다. XN1 군, XN2 군은 Xeno$^{R}$III를 각각 1회, 2회 적용하였다. 그런 다음 복합 레진 Z100을 적층 충전하였다. 법랑질 표면의 접착제를 아세톤으로 제거하고 주사 전자 현미경을 이용하여 산 부식 양상을 관찰하였다 미세인장결합강도 측정을 위해 표본을 절단하여 레진과 치아의 접착 계면이 1 mm$^2$이 되도록 하여 실험하였다. 실험의 결과는 One-way ANOVA를 사용해 분석한 다음 Duncan's post-hoc test로 사후 검정 하였다. 본 연구의 결과 all-in-one adhesive의 1회와 2회 적용간에는 유의한 차이가 나타나지 않았으며 two-step self-etching adhesive와 all-in-one adhesive의 산 부식 양상 모두 얕고 불규칙 하였다.

• 복식
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• 제25권
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• pp.117-118
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• 1995

Chinese shroud through literatures are as follows. 1. Taetae, Sime i, P'oo, Hansam, Ko, Mal, Nukpaek, Kwatu, Cu'ungi, Pokk n, Myokmok, Ri, Aksu, Mo and m were used the most in China. 2. The cloths of Chinese shroud were p'o, Paek, Kyon and Kum. The colors of the Chinese shroud were Hyon, Hun and white. 3. The size of the Chinese shroud is as follows. The size of the Ch'ungi was similar to the size of jujube kernel, the length of Myokmok was one Ch' k two Ch'on or one Ch' k five Ch'on, the length of Aksu was one Ch' k two Ch'on and it's width was five Ch'on. The chil of Mo reached the hands and the length of Swae was three Ch' k and the length of m was five Ch'on. 4. In Chinese shroud, cotton was put in P'oo, Aksu was tide by the strings at two corners. Myokmok was tied by the strings of four corners. The tip of the m was divided and Mo wrapped the whole body. 5. The clothes of Soryom was nineteen Ch'ing. The clothes of Taeryom in Kun were one hundred Ch'ing in the Chinese. The impliment of Soryom were Kum, Kyo, Sange i, Sane i, Ch'im, Yok and Kyon in the Chinese shroud. In the case of the implement of Taeryom, the chinese shroud had Kum, Kyo, Sange i, Sane i, Ch'im and Yok.

• The Journal of Korean Physical Therapy
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• 제14권1호
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• pp.89-98
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• 2002

The purpose of this study was to investigate the effects of aqua-exercise program on the balance of one leg stance in the elderly women. Subjects were fifteen member living in Daejon(15 females), between 65 and 77 years of age. The subjects was put in the aqua-exercise program for 8 weeks, between July and september, 2001. The results of this study were as follows: 1. After the exercise program, subjects showed Meaningful increase of the balance of one leg stance. 2. In comparison of balance of one leg stance with the control group, the experimental group revealed a significantly better result in the balance of one leg stance. As a result, this study shows that aqua-exercise program improves the ability of balance in the elderly women. Based on this program, constant health care for the elderly women is needed.

• Journal of Sport and Applied Science
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• 제7권3호
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• pp.27-35
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• 2023

Purpose: Providing tutoring services may be one of the most effective practices for improving academic performance and student retention. However, there is little information on the difference between mandatory tutoring (MT) and voluntary tutoring (VT) on the impact of student academic performance. This investigation compared the effectiveness of VT and MT services in the three upper level undergraduate classes. Research design, data, and methodology: Baseline data were collected in a spring semester where no tutoring of any kind was offered (control group (CG), n=78). The MT (n=104) was required in the following fall semester, and in the next spring semester only VT (n=97) was offered. Descriptive statistics and One-way ANOVA using IBM SPSS v23 (Chicago, IL) were used to analyze the final grades of the courses to identify differences in final grades between semesters. Results: Although final grades averaged from three classes were highest in the MT group, there were no statistical differences between the MT and VT groups, F(2, 292) = 1.150, p =.318. Conclusion: This study indicates there was no significant difference in academic performance between the two tutoring types, but that both tutoring services can be effective.

• Ocean Systems Engineering
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• 제12권1호
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• pp.23-38
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• 2022

In this paper, a pitch-type wave energy converter (WEC-rotor) is investigated in irregular wave conditions for the real sea testing at the west coast of Jeju Island, South Korea. The present research builds on and extends our previous work on regular waves to irregular waves. The hydrodynamic characteristics of the WEC-rotor are assessed by establishing a quasi-two-dimensional numerical wave tank using computational fluid dynamics by solving the Reynolds-averaged Navier-Stokes equation. The numerical solution is validated with physical experiments, and the comparison shows good agreement. Furthermore, the hydrodynamic performance of the WEC-rotor is explored by investigating the effect of the power take-off (PTO) loading torque by one-way and two-way systems, the wave height, the wave period, operational and high sea wave conditions. Irrespective of the sea wave conditions, the absorbed power is quadratic in nature with the one-way and two-way PTO loading systems. The power absorption increases with the wave height, and the increment is rapid and mild in the two-way and one-way PTO loading torques, respectively. The pitch response amplitude operator increases as the wave period increases until the maximum value and then decreases. For a fixed PTO loading, the power and efficiency are higher in the two-way PTO loading system than in the one-way PTO loading system at different wave periods.

• International Journal of Contents
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• 제18권3호
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• pp.66-73
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• 2022

The purpose of this study is to evaluate the economic and social impact of the SEP in which the elderly participate by using the blended return on investment (BROI), economic return on investment (EROI), and social return on investment (SROI) research methods. And the sustainable conditions of SEP were confirmed. This study was conducted with one market-type SEP approved by the Korea Elderly Labor Force Development Institute (KLFDI), one preliminary social enterprise approved by Changwon City Hall, and one market-type SEP operated by a social welfare center for the elderly. As a result of the study, it was found that EROI, SROI, and BROI were the highest in the SEP of preliminary social enterprises operated by subsidies in Changwon.However, the difference between EROI and SROI was greatest in the market-type SEP operated by the elderly social welfare center. There was a big difference between economic and social impacts. The social influence of the elderly was evaluated to be higher than the income of the elderly.

• 원예과학기술지
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• 제17권3호
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• pp.344-345
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• 1999

본 연구는 심비디움의 고랭지 이동재배의 대체기술개발을 위하여 생장억제제 uniconazole 처리시기가 심비디움 Pine Clash 'Moon Venus'와 Green Sour 'A One'의 생장 및 개화에 미치는 영향에 대해서 조사하였다. 두 품종 모두 uniconazole의 처리시기가 빠를수록 왜화효과가 강하게 나타났으며 'Moon Venus' 보다 'A One'의 생장억제가 현저하였다. 'Moon Venus'의 경우 5월 7일과 27일 uniconazole 처리에 의해서 개화가 각각 5, 6일 촉진되었으며 또한 화서수, 소화수도 증가하는 경향을 나타내었다. 'A One'의 경우 개화시기는 처리간에 차이가 없었으나 uniconazole처리에 의해서 화서수와 소화수가 감소하는 경향을 나타내었다. 두 품종 모두 소화의 크기를 나타내는 하악편의 길이와 폭은 처리간에 차이가 없었다.

• 문화기술의 융합
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• 제5권1호
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• pp.153-167
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• 2019

연구목적 : 본 연구는 중노년 1인가구의 건강관련 삶의 질에 영향을 미치는 요인을 파악하고자 제7차 1기 국민건강영양조사 원시자료를 이용한 2차 자료 분석을 수행하였다. 연구방법: 본 연구의 대상은 40세 이상의 1인 가구 497명이며, 40-64, 65세 이상으로 구분하였다, 자료분석은 SPSS 24 program을 이용하여 복합표본 통계를 실시하였으며, 기술통계, 단순회귀분석 및 위계적 다중회귀분석을 실시하였다. 연구결과 : 중년1인가구의 건강관련 삶의 질 영향요인은 활동제한여부, 우울, 신체활동실천여부, 평생 흡연량으로 57%의 설명력을 보였다. 남성노년 1인가구는 주관적 건강, 대사증후군, 활동제한여부, 스트레스 인지율로 44.8%, 여성노년 1인가구는 주관적 건강, 활동제한여부, 가구 소득으로 35.9%의 설명력을 보였다. 결론 : 따라서 위의 결과를 고려하여 중노년 1인가구의 삶의 질 향상을 위한 정책입안 및 중재프로그램 개발 및 적용이 필요하다.

• 여성건강간호학회지
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• 제7권2호
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• pp.188-202
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• 2001

This study was designed to investigate the effect of one-to-one labor support on labor pain, labor stress response, childbirth experience and neonatal status for primipara by a quasi experiment (nonequivalent control group pretest-posttest design), from April 30, 1999 to February 20, 2000. The subjects of this experiment consisted of eighty two primipara with single gestation, full term, uncomplicated pregnancies. Forty one were in the experimental group and forty one in the control group. Their mean age was 25.95 years, their mean gestation period was 39.9 weeks. A caring package of one-to-one labor support had three components. Physical support consisted of massage, back pressure, touch. Emotional support was provided by a continuous nurse's presence, acceptance and encouragement. Informational support involved teaching breathing skills, relaxation skills and knowledge about the labor process. Data assessed labor pain, pulse rate and blood pressure to measure labor stress response. Also, in measuring the value of labor stress response, plasma epinephrine, plasma norepinephrine and serum cortisol were measured. In the 24 hours after birth, the data for the postpartum mother's childbirth experiences was collected. Umbilical cord arterial blood pH, one minute and five minute Apgar score were measured after birth. Data was analyzed by t-test, $x^2$-test, repeated measures ANOVA, ANCOVA with SAS Program. The results were as follows; 1. Labor pain was significantly low in the experimental group(P=.016). 2. No significant group effects were found, but significant time effects were found for plasma epinephrine, norepinephrine, serum cortisol, pulse rate and blood pressure. 3. The childbirth experience of the experimental group was significantly more positive than the control group (P = .005). 4. The umbilical cord arterial blood pH of the experimental group was significantly higher than the control group(P=.014). There was no significant difference between the two groups in neonatal one minute and five minute Apgar scores. In conclusion, these findings indicate that one-to-one labor support could be effective in decreasing labor pain, and increasing positive childbirth experiences, also increasing the neonatal umbilical cord arterial blood pH for primipara. So, one-to-one labor support could be applied as an effective nursing treatment for primipara.