• Title/Summary/Keyword: behavior explanation

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Health Belief and Performance of Health Behaviors of some University Students in Korea (우리 나라 일부 대학생의 건강신념 및 건강행위 실천도)

  • 이병숙;김미영;김미현;김선경
    • Journal of Korean Academy of Nursing
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    • v.30 no.1
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    • pp.213-224
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    • 2000
  • Health belief is an important factor influencing the performance of health behaviors. Young adulthood is a critical period to establish health beliefs and behaviors for a healthy life. As health professionals, nurses can help young people establish more positive health beliefs and carry out health behaviors more effectively. But before attempting to help them, it is necessary to identify their health beliefs and behaviors. The purpose of this study was to identify the health beliefs and health behaviors of university students in Korea. Subjects for this study were 2000 students from 10 universities, but data from only 1605 subjects was included in the analysis. Data were collected from May 5th, 1998 to June 21th, 1998. Instruments used in this study were two tools to measure 'health beliefs' and 'performance of health behaviors' that had been developed and used in previous research. Cronbach's $\alpha$s were .8737 for the tool for health beliefs and .8385 for the tool for health behaviors. The results of this study are as follows. (1) Average score of the subjects was 117.68 for health belief and 95.15 for performance of health behaviors. (2) There was a significant correlation between the health belief and the performance of health behaviors(r= .419). (3) School year, major, health status, and experience of disease in the students were important factors in the explanation of health belief(28.8%). (4) Health belief, major, health status, school year, sex, age, experience of disease in family members were important factors in the explanation of the performance of health behaviors (21.2%).

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Oral health of the elderly people receiving nursing care and home care serivces in Chungnam (충남 일부지역 요양기관과 재가 노인들의 구강보건에 관한 연구)

  • Jang, Hee-kyung;Choi, Eun Mi;Son, Boo-Soon
    • Journal of Korean society of Dental Hygiene
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    • v.15 no.4
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    • pp.565-574
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    • 2015
  • Objectives: The purpose of the study is to investigate the oral health of the elderly people receiving nursing care and home care services in Chungnam. Methods: The subjects were 350 elderly people receiving 21 nursing care and home care services in Chungnam. The direct interview with the elderly people and oral examination was carried out from July, 2012 to December, 2013 after explanation fo the purpose of the study. The subjects consisted of 178 elderly people receiving nursing care services and 172 elderly people receiving home care services. Except incomplete answers, 315 data were analyzed. The questionnaire consisted of general characteristics of the subjects, characteristics by facility, oral condition, oral care behavior, correlation by factors on oral health, influencing factor on dental caries, influencing factor on periodontal disease, and influencing factor on elasticity of gingival muscle. Data were analyzed by frequency analysis, chi-square test, and multiple regression analysis using SPSS 21.0 program. Results: Multivariate analysis of influencing factors on oral health revealed that the elderly people with low education level tended to have higher incidence rate of dental caries. The influencing factors on oral health were the elasticity of gingival muscle, periodontal disease, educational level, and economic level. (p<0.05). The explanation power was 26.2%. Conclusions: Oral Health Promotion should be obligatorily established as one of the medical system and medical fee system to promote oral health condition for the aged.

Quantitative Photocatalytic Activity under Visible Light with Mn-ACF/TiO2

  • Ye, Shu;Kim, Hyun-il;Oh, Won-Chun
    • Journal of the Korean Ceramic Society
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    • v.53 no.3
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    • pp.343-348
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    • 2016
  • Manganese and $TiO_2$ grown on Activated Carbon Fiber (ACF) was synthesized by hydrothermal method. The prepared composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray (EDX). The catalytic behavior was investigated through the decomposition of methylene blue (MB) and methyl orange (MO) as standard dyes under visible light. The degradation performance of the degraded standard dye solutions was determined by UV-Vis spectrophotometry. This enhanced photocatalytic activity arises from the positive synergetic effect among the Mn, $TiO_2$ and ACF in this heterogeneous photocatalyst. The process contributes to the release of abundant photocatalytic sites of Mn and $TiO_2$ and improves the photocatalytic efficiency. The excellent adsorption and photocatalytic effect with the explanation of the synergetic mechanism are very useful not only for fundamental research but also for potential practical applications.

Pressure Loss and Heat Transfer Characteristics of the Glass Beads-Water Flow in a Vertical Tube (수직관내 유리알-물 유동의 압력손실 및 열전달 성능)

  • Kim, N.H.;Kim, J.S.;Lee, Y.P.
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.8 no.4
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    • pp.550-560
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    • 1996
  • Recently, fluidized bed heat exchangers with circulating liquid are widely used in a number of places-chemical, process, food concentration, waste water treatment facilities, etc. In a circulating heat exchanger, solid particles circulate with the liquid, thereby increase the heat transfer and reduce the fouling potential of the heat exchanger. In this study, glass beads were circulated through a vertical tube. The pressure loss and the heat transfer coefficient were measured. At low flow velocities, glass beads enhanced the heat transfer considerably. The enhancement increased as the volume fraction of the glass beads increased. The pressure loss showed a similar trend. From the observed particle behavior near tube wall, a possible explanation of the trend is provided.

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A visual investigation of non-premixed flame behavior under acoustic excitation (음향 가진 하에서 비예혼합 화염거동에 관한 가시화 연구)

  • Lee, Kee-Man;Oh, Sai-Kee
    • Proceedings of the KSME Conference
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    • 2001.06d
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    • pp.871-877
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    • 2001
  • Experimental study was conducted to investigate the effects of axial forcing on the flame structures near the nozzle exit of non-premixed flame. The most notable observation is that the direction of vortical motions is changed at some ranges, according to the increase of excitation amplitude. Especially, the elongation flame and the phenomenon of In-burning are always occurred when the vortical motion turnabout. In an analysis of the flame/flow visualization by means of direct photography and RMS technique, a plausible explanation can be made that above phenomena are related only to the amplitude of phase average velocity between the instantaneous velocity elements of excited flow.

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Bond Strength Evaluation of Epoxy-Coated Reinforcement using Nonlinear Finite Element Analysis (비선형 유한요소법에 의한 에폭시 피막된 철근의 부착에 관한 연구)

  • 최완철
    • Proceedings of the Korea Concrete Institute Conference
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    • 1991.04a
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    • pp.65-68
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    • 1991
  • Finite element analysis is used to study the role of interfacial properties on the bond strength of reinforcing steel to concrete. Specifically, the role played by epoxy coatings on the failure of standard beam-end specimens is explored. Experimental results show that epoxy coatings reduce bond strength, but that the effect is dependent on the bar size and the deformation pattern. The finite element model for the beam-end specimen includes representations for the deformed steel bar, the concrete, and the interfacial material. The interface elements can be varied to match the stiffness and friction properties of the interfacial material. Cracking within the concrete is represented using Hillerborg's ficticious crack model. The model is used to study important aspects or behavior observed in the tests and to provide an explanation for the effect of the various test parameters.

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Properties of Cu-Contained Spinel Ferrites with Various Cu Contents (Cu계 스피넬 페라이트의 Cu 함량에 따른 특성 변화)

  • 남중희;오재희
    • Journal of the Korean Ceramic Society
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    • v.33 no.11
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    • pp.1245-1252
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    • 1996
  • The charcteristics for the copper-contained spinel ferrites such as NiCu-and ZnCu ferrites with various copper content are investigated in this study which can provide a explanation for the behavior of copper in sintering at a low temperatuer. The bulk density and the grain size for these sintered ferrites were increased with the larger amount of copper in compositions. In microstructure of copper-contained spinel ferrites copper exists in the grain boundary which is sintering process. Electrical resistivity and frequency range with maximum Q-facor of NiCu-or ZnCu ferrites were decreased as increasing of copper content in ferrite composition.

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Pressure Loss and Heat Transfer Characteristics of the Glass Bead - Water Flow in a Vertical Tube (수직관내 유리알-물 유동의 압력손실 및 열전달 성능)

  • 김내현;김정식;이윤표
    • Proceedings of the Korea Society for Energy Engineering kosee Conference
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    • 1996.04a
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    • pp.121-131
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    • 1996
  • Recently, circulating liquid fluidized bed heat exchangers are widely used in a number of places - chemical, process, food concentration, waste water treatment facilities, etc. In a circulating heat exchanger, solid particles circulate with the liquid, thereby increase the heat transfer and reduce the fouling potential of the heat exchanger. In this study, glass beads were circulated through a vertical tube. The pressure loss and the heat transfer coefficient were measured. At low flow velocities, glass beads enhanced the heat transfer considerably. The enhancement increased as the volume fraction of the glass beads increased. It also increased as the particle diameter increased. The pressure loss showed a similar trend. From the observed particle behavior near tube wall, a possible explanation of the trend is provided.

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Electrophoretic Superconducting Film Applications

  • Fenghua, Li;Jue, Wang;Soh, Dea-Wha;Zhanguo, Fan
    • Journal of the Speleological Society of Korea
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    • no.76
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    • pp.15-17
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    • 2006
  • [ $YBa_2Cu_3O_{7-{\delta}}$ ] superconductor films have been prepared on silver substrates by electrophoretic deposition. As silver does not react with $YBa_2Cu_3O_{7-{\delta}}$ compound and has little influence on its superconductivity, it is usually doped in $YBa_2Cu_3O_7$ to improve the strength of the material and eliminate micro cracks. It has been proved that Ag additive can lower the melting temperature of $YBa_2Cu_3O_{7-{\delta}}$ and act as linking bridge among $YBa_2Cu_3O_{7-{\delta}}$ particles, thus in this paper Ag doped $YBa_2Cu_3O_{7-{\delta}}$ thick films are prepared by electrophoretic co deposition. As there are only some referenced experience formula and models for co electrophoretic deposition and does not exist unified explanation, the behavior of Ag particles during co electrophoretic deposition is also studied.

Some convergence properties of godard's quartic algorithm: 1. The rate of convergence (4차 고다드 알고리즘의 몇 가지 수렴 성질:1. 수렴속도)

  • 최진호;배진수;송익호;박래홍;박정순
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.21 no.9
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    • pp.2349-2354
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    • 1996
  • Convergence analysis on Godard's quartic (GQ) algorithm used forblind equalization is accomplished in this paper. The first main result is an explanation of the lacal behavior of the GQ algorithm around the global minimum point of the average performance functio, from which we can determine the adaptation gain. It is show that the normalized adaptation gain of the GQ algorithm should be smaller than that of the decision directed (DD) algorithm. In addition, it is observed that the GQ algorithm converges faster than the DD equalization algorithm.

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