• The Journal of Advanced Prosthodontics
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• 제1권1호
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• pp.31-36
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• 2009

PURPOSE. To determine the change in stability of single-stage, three different design of implant systems in humans utilizing resonance frequency analysis for early healing period(24 weeks), without loading. MATERIAL AND METHODS. Twenty-five patients were included into this study. A total of 45 implants, three different design of implant systems(group A,C,R) were placed in the posterior maxilla or mandible. The specific transducer for each implant system was used. ISQ(implant stability quotient) reading were obtained for each implant at the time of surgery, 3, 6, 8, 10, 12, 24 weeks postoperatively. Data were analyzed for different implant type, bone type, healing time, anatomical locations. RESULTS. For each implant system, a two-factor mixed-model ANOVA demonstrated that a significant effect on ISQ values(group A=0.0022, C=0.017, R=0.0018). For each implant system, in a two-factor mixed model ANOVA, and two-sample t-test, the main effect of jaw position(P > .005) on ISQ values were not significant. CONCLUSIONS. All the implant groups A, C and R, the change patterns of ISQ over time differed by bone type. Implant stability increased greatly between week 0 and week six and showed slow increase between week six and six months(plateau effect).

• 융합정보논문지
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• 제9권5호
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• pp.48-54
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• 2019

본 연구는 간호대학생의 스트레스, 자아존중감, 자기효능감, 우울의 관계와 그 영향 요인을 파악하기 위해 시도되었다. 본 연구는 C지역의 C대학과 H대학 3학년 간호대학생 116명을 대상으로 한 서술적 조사연구이다. 수집된 자료를 SPSS 21.0 이용하여 기술통계, ANOVA, t-test, Pearson's correlation coefficient 및 Multiple regression analysis를 사용하였다. 자료수집은 2017년 10월부터 2017년 12월까지 하였다. 본 연구결과는 다음과 같다. 일반적 특성에 따른 우울의 차이는 없었고, 우울에 영향을 미치는 요인은 스트레스(${\beta}=0.246$, p=.000), 자기효능감(${\beta}=-.170$, p=.000), 자아존중감(${\beta}=-.131$ p=.000)순으로 확인되었다. 간호대학생의 우울을 예방하기 위해서는 우울의 원인과 우울수준을 심층적으로 사정하고 우울을 감소시켜 정서적 건강문제를 위협하는 대처방안을 모색해야 할 것이다.

• 정신신체의학
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• 제28권2호
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• pp.155-160
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• 2020

연구목적 본 연구는 외상후 스트레스장애(Posttraumatic Stress Disorder, PTSD)를 비롯한 정신질환자의 기질과 성격의 변화 양상을 확인하고 한다 방 법 PTSD 환자 33명과 비PTSD 환자 69명을 대상으로 Temperament and Character Inventory (TCI)를 1, 2차에 걸쳐 측정하였고, 그 결과값에 대해 반복측정 ANOVA와 단순 주효과분석을 시행하였다. 결 과 비PTSD 집단에서는 1차와 2차 검사 결과의 차이가 나타나지 않았다. 반면, PTSD 집단에서는 위험회피, 사회적 민감성, 자율성, 연대감에서 유의미한 차이가 있었다. 또한 위험회피, 사회적 민감성, 자율성, 연대감에서 시간과 그룹 간의 상호작용과 시간에 따른 주효과가 유의하게 나타났다. 결 론 본 연구는 외상적 사건이 자율성, 연대감과 같은 성격적 특성은 물론, 위험회피와 사회적 민감성과 같은 기질적 특성의 변화에 영향을 미칠 수 있음을 확인하였다는 점에서 의의가 있다.

• 대한한의학회지
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• 제29권1호
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• pp.39-46
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• 2008

Background : Acupuncture has been used as a clinical treatment in Oriental medicine for various diseases including pain relief. The descending pain control system of periaqueductal gray (PAG) is a powerful pain control system in mammalians. Expression of c-Fos is used as a marker for stimuli-induced metabolic changes of neurons. Objective : In the present study, the effects of acupuncture on analgesic effect in visceral pain were investigated through the writhing reflex and c-Fos expression in ventrolateral PAG (vlPAG) area using immunohistochemistry in mice. Method : For the writhing test, mice were divided into five groups. Immediately after finishing the behavioral test, the animals were weighed and overdosed with Zoletil. After a complete lack of response was observed, the brains of the mice were dissected into serial coronal sections, and c-Fos immunohistochemistry was performed. Statistical analysis of all data was performed using one-way ANOVA. Result : The present results showed that acupuncture affected the writhing reflex and that Choksamni (zusnali) acupoint and aspirin significantlysuppressed acetic acid treatment-induced increased writhing reflex, and the expression of c-Fos in vlPAG was significantly increased in the acupunctured group. Conclusion : The present study suggests that acupuncture has an antinociceptive effect on acetic acid-induced visceral pain by increase of c-Fos expression in mice. Aspirin also showed analgesic effect, however the mechanism is different from the acupuncture.

• 가정간호학회지
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• 제22권1호
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• pp.69-77
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• 2015

Purposes: The purpose of the study was to evaluate knowledge of hepatitis C and compliance with therapeutic guidelines and their correlation. Methods: Participants included a total of 197 subjects with chronic hepatitis C from 4 general hospitals. Subjects were asked 25 items of knowledge on hepatitis C and 17 items of compliance with therapeutic guidelines. The collected data was analyzed for frequency, percentage, average, standard deviation, t-test, ANOVA and Pearson's correlation coefficient. with the help of SPSS 21.0 program. Results: The subject's knowledge on chronic hepatitis C expressed as percentage was 67.1%. Compliance of the research participants gained $3.96({\pm}0.76)$ points in general on a 5-point scale. Learned compliance was higher when the patients were 45 years old and over. female and with spouse. There was a statistically significantly positive correlation between knowledge and compliances. Conclusions: Development of educational programs requires consideration of patient characteristics, particularly education on the male patients under 45 years of age.

• 한국안광학회지
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• 제14권3호
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• pp.83-88
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• 2009

목적: 저시력 환자의 경우에 시각적 판단을 위해서 물체의 크기와 노출시간이 상대적으로 커져야 할 필요가 있다고 알려져 왔다. 물체의 크기에 따른 대비감도의 증가를 공간적 가중이라 하며 노출시간에 따른 대비감도의 증가를 시간적 가중이라 하는데 본 연구에서는 저시력 환자들이 시각적 판단 시에 실제로 정상인 보다 큰 물체와 긴 시간을 필요로 하는지 알아보고자 하였다. 방법: 20명의 저시력 환자와 20명의 정상대조군을 대상으로 원형의 사인파격자무늬를 갖는 두 개의 공간주파수 0.7c/d와 3.0c/d로 대비감도를 측정하였다. 자료 분석에는 혼합형 ANOVA(2${\times}$2)를 이용하였다. 결과: 저시력 환자에서의 대비감도는 대조군에 비하여 전반적으로 낮은 값을 보였다. 군간 공간적가중의 변화는 없었으며(p=0.13) 공간주파수간 차는 0.14였으며 이들 간의 상호작용도 유의성이 없었다(p=0.59). 마찬가지로 시간적 가중에서도 군간 시간적 가중의 변화는 통계적 유의성이 없었으며(p=0.19) 공간주파수간 차와 상호작용도 유의성이 없었다(각각 p=0.31, p=0.95). 결론: 정상대조군에 비하여 저시력 군에서 대비감도가 크게 저하되었으나 물체의 크기와 노출시간에 따른 군간 유의한 차이는 없었다.

• Computers and Concrete
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• 제17권4호
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• pp.477-488
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• 2016

This paper aims to model the effects of five different variables which includes: cement content (C), the steel fiber amount (F), the silica fume amount (SF), the superplasticizer (SP), the silica fume amount (SF), and the water to cementitious ratio (w/c) on 28 days flexural toughness of Ultra High Performance Concrete (UHPC) as well as, a study on the variable interactions and correlations by using analyze of variance (ANOVA) and response surface methodology (RSM). The variables were compared by fine aggregate mass. The model will be valid for the mixes with 0.18 to 0.32 w/c ratio, 4 to 8 percent steel fiber, 7 to 13 percent cement, 15 to 30 percent silica fume, and 4 to 8 percent superplasticizer by fine aggregate mass.

• 한국기계가공학회지
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• 제11권4호
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• pp.31-38
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• 2012

In this paper, we selected primary cutting parameters that influence on surface roughness of cut bottom surface in end-milling for SM25C material. Those are overhang, depth of cut, feed rate and spindle speed. And then performed orthogonal array experiment and ANOVA by Taguchi method to determine that improved level combination of cutting parameters for betterment of working efficiency and surface roughness one of quality characteristics. And we verified a advisability of prediction model by verification test about level combination. From the results, main cutting parameter influences on surface roughness is spindle speed and the next is feed rate.

• 한국응용과학기술학회지
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• 제35권1호
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• pp.89-98
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• 2018

본 연구의 목적은 충격흡수 및 통기기능 인솔을 적용한 개발 전투화의 족저압력 및 온도변화를 연구하는데 있다. 남성 피험자 11명(age: $21.8{\pm}2.2yrs$, height: $174.3{\pm}3.6cm$, weight: $71.6{\pm}8.6kg$, foot length: $261.0{\pm}1.0mm$)을 대상으로 총 3종류 전투화의 족저압력 및 온도 변화를 비교하였다: 전투화 A(보급형 일반 전투화), 전투화 B(통기구가 적용된 개발 전투화), 전투화 C(전투화 B에 통기기능 및 충격흡수용 인솔 적용). 족저압력 측정을 위해 Pedar-X를 사용하였고, 전투화의 내부온도는 휴대용 써미스터의 온도센서를 사용하였다. 전투화의 종류별 족저압력 및 온도 변화결과를 비교하기 위해 일원변량분석(one-way ANOVA)을 실시한 결과, 첫째, 족저압력 변인에서, 기능성 인솔을 적용한 전투화 C가 전투화 A보다 오른발/왼발 후족부의 최대족저압력에서 통계적으로 유의하게 낮았으며, 전투화 C가 전투화 B보다 왼발 후족부의 평균족저압력에서 통계적으로 유의하게 낮은 압력을 나타내었다. 둘째, 내부온도에서 보행시작 후 40분경과 시점부터 개발 전투화인 B, C가 일반 전투화인 A보다 낮은 내부 온도를 보였다.

• Korea-Australia Rheology Journal
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• 제20권4호
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• pp.221-226
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• 2008

The purpose of this study was to compare rheological properties of six dental interocclusal recording materials and to investigate the effect of temperature on the rheological properties during setting. Five polyvinylsiloxane materials and one polyether material were investigated in this study. The storage modulus (G') and the loss factor ($tan{\delta}$) were measured from 30s after mixing during setting, using the universal dynamic spectrometer. Viscoelastic properties were evaluated by means of G' and $tan{\delta}$ from 5 repeats at $21^{\circ}C$ and $33^{\circ}C$. Individual changes during setting were also evaluated. All data were statistically analyzed using one-way ANOVA and multiple comparison $Scheff{\acute{e}}$ test at the significance level of 0.05. The mean of G was checked at $t_{set}$ (the setting time provided from manufacturer) and $t_{300}$ (the end of experimental time) and the mean of $tan{\delta}$ was checked at to and $t_{set}$. Whereas the increase of the G' value showed generally exponential changes at $21^{\circ}C$, the change of the G' value at $33^{\circ}C$ displayed sigmoidal curves during setting. The change of loss factor $tan{\delta}$ during setting varied. Within the limitations of this study, dental interocclusal recording materials had different viscoelastic properties and most of the materials showed different fluidity at $21^{\circ}C$ and $33^{\circ}C$.