• Korean Journal of Applied Biomechanics
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• v.22 no.2
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• pp.201-208
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• 2012

The purpose of this study was to investigate the effect of leg extension exercises performed on outdoor resistance exercise machines on knee extension muscle strength and quadriceps muscle group cross sectional area (CSA) in elderly women. Two groups were recruited for this study, including an exercise group (EG: n=13, $71.38{\pm}2.79$ yrs) and a control group (CG: n=5, $73.4{\pm}5.94$), In all subjects, maximum isometric and isokinetic muscle strength of knee flexion and extension were measured using an isokinetic dynamometer (Cybex(R) Humac Norm Testing & Rehabilitation System, USA). Quadriceps muscle group CSA were measured using MRI (Philps, Intera 1.5 T, NE Netherlands). The results of this study showed that post-intervention isometric knee extension peak torque value were higher than pre-intervention measures in the EG. However, the EG did not show improvement in quadriceps muscle group CSA, Also, no differences in the shift of optimal knee joint angle were observed between pre and post-intervention exercise. Outdoor leg extension exercise showed small increases in muscle strength in comparison to other resistance training exercises. The results of this study suggest that because outdoor leg extension exercise machines lack a progressive loading mechanism, significant increases in muscle strength may not be obtained.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.432-448
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• 2016

The purpose of this study examines the tendency and determinants of welfare attitudes for social workers in Seoul province. Based on Survey data, this study focuses mainly on how socialization patterns, self-interest, and value and norm influence attitudes towards welfare. The results of this study are as follows. First, The self-interest theory has a limit to explain welfare attitudes for social workers in Seoul province. Second, Ideology factor has an impact on welfare attitudes for social workers in Seoul province. In other words, egalitarian social workers have more pro-welfare attitudes. Based on findings, this study suggested that strengthening value of equality in welfare policy and program.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.347-350
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• 2007

An ECG analysis with activity monitoring for the home care of elderly persons or patients, using wireless sensors technology was design and implemented. The changes in heart rate occur before, during, or following behavior such as posture changes, walking and running. Therefore, it is often very important to record heart rate along with posture and behavior, for continuously monitoring a patient's cardiovascular regulatory system during their daily life activity. The ECG and accelerometer data are continuously recorded with a built-in automatic alarm detection system, for giving early alarm signals even if the patient is unconscious or unaware of cardiac arrhythmias. The hardware allows data to be transmitted wirelessly from on-body sensors to a base station attached to server PC using IEEE802.15.4. If any abnormality un at server then the alarm condition sends to the doctor' PDA (Personal Digital Assistant).

• Culinary science and hospitality research
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• v.12 no.3 s.30
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• pp.1-16
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• 2006

This study investigates the level of customers' preferences for the menu at rice cake cafes. The study aims at examining the potential of restaurants with rice cake dishes and suggesting the ways to contribute to the potential. For this study, various rice cake cafes in Seoul which were often mentioned in the Internet portal sites and mass media are selected such as Jilsilu, Midan, Yaemunbyeonggwa, and Howeondang. Some of the customers in these rice cake cafes from August 16th to 26th in 2005 are the participants in this study. Using Windows SPSS 11.0 for statistical analysis, the validity of the items in the questionnaire is tested through Cronbach's Alpha which also reveals the internal reliability. Variables are analysed to eliminate less important variables. In order to examine the differences between groups by norm population profiles, t-test and ANOVA are conducted. For obtaining the degree of impact of rice cake cafe preference variables on the satisfaction in the rice cake cafe, regression analysis is carried out. As a result, for preferences for dishes, 19 variables among 22 are identified and divided into four factors which are named as 1) fundamental factor, 2) external factor, 3) appearance factor, and 4) structural factor. The fundamental factor, external factor, appearance factor, and structural factor are all significantly influential to the level of satisfaction with the menu, yet the fundamental factor is the most powerful factor among them.

• Korean Journal of Adult Nursing
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• v.19 no.1
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• pp.24-34
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• 2007

Purpose: The objective of this study was to define the predictors of health related quality of life(HRQoL) of women caregivers of the demented elderly patients. Methods: The subjects of this study were 140 pairs of patients with dementia and their caregivers. The characteristics of dementia patients and caregivers, Barthel index and SF-36 were measured in this study. T-test, ANOVA, Pearson correlation coefficient, and stepwise multiple regression were used for data analysis. Results: The health related quality of life(HRQoL) score of women caregivers was $288.35{\pm}66.10$ for norm based scoring. HRQoL of women caregivers was correlated with patients' ADL, severity of dementia, caregivers' age, burden, and family support. The major factors that affected the physical components of women caregivers of patients with dementia was the age of the caregiver, burden, and ADL which explained 36.0% of HRQoL. The main predictors of women caregivers' emotional state was the caregiver's burden. Conclusion: Patients' support systems must be implemented to improve the physical HRQoL of caregivers. A caregivers' burden relief program needs to be prepared to increase their emotional HRQoL and further studies and efforts will be needed to evaluate those effects.

• Journal of Digital Convergence
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• v.12 no.2
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• pp.183-191
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• 2014

SNS uses the Internet as its base. It is created in order to achieve communication between the users. Up until now, most previous research were focused on the users of SNS. But, there are still a great deal of people who do not use or discontinuously use SNS. This is because users have natural resistance against SNS when using the service. In this study, time shortage perception, awareness of SNS, self-efficacy, suitability, information quality of SNS, subjective norm and privacy concern are considered as influence factors by previous research. An empirical study for Chinese students and internet users was conducted to identify how these factors influence perceived risk and perceived usefulness, and how this influence to user's resistance. This study can explain the reason why users don't use SNS and resist SNS use.

• Journal of the Korean Society for Railway
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• v.14 no.3
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• pp.234-239
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• 2011

Installing the temporary bridge after excavating the railway requires installing movable cross beam, but as it doesn't requires isolating the catenary or cutting the rail, it's applicable to double-track with frequent operation. In this study, a displacement meter was placed on temporary bridge to monitor the displacement pattern in curve section (R400) completed using temporary bridge method, and wheel load, lateral pressure and derailment coefficient were measured to evaluate the load imposed on track and the stability in curve section (R400) for quantitative evaluation of training running safety. As a result of the measurement, when trains passing over a temporary bridge, the maximum value of Wheel load and Lateral Force is analyzed as the 51% and 81% of standard level according to foreign country's performance tests, There is no trouble with stability analysis in Wheel load and Lateral Force occurring. Additionally, Wheel load and Lateral Force considered as the safety standard are tested 49% of limiting value regardless of trains, which the norm value quite well, there is no problem with train running.

• Journal of the Korean Institute of Intelligent Systems
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• v.15 no.7
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• pp.881-886
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• 2005

This paper presents intelligent digital redesign method of global approach for hybrid state space fuzzy-model-based controllers. For effectiveness and stabilization of continuous-time uncertain nonlinear systems under discrete-time controller, Takagi-Sugeno(TS) fuzzy model is used to represent tile complex system. And global approach design problems viewed as a convex optimization problem that we minimize the error of the norm bounds between nonlinearly interpolated linear operators to be matched. Also, by using the power series, we analyzed nonlinear system's uncertain parts more precisely. When a sampling period is sufficiently small, the conversion of a continuous-time structured uncertain nonlinear system to an equivalent discrete-time system have proper reason. Sufficiently conditions for the global state-matching of tile digitally controlled system are formulated in terms of linear matrix inequalities (LMIs). Finally, a TS fuzzy model for the chaotic Lorentz system is used as an example to guarantee the stability and effectiveness of the proposed method.

• Research in Community and Public Health Nursing
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• v.11 no.2
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• pp.347-357
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• 2000

The purspose of this study is to examine the undergraduate students' attitudes, salient beliefs, perceived self-control and intentions for moderate drinking behavior of their own. Two hundred and twenty five students in two universities in Seoul and Suwon participated in this study. Questionnaires developed by this investigator under the guidance of the theory of planned behavior were used to collect data, Descriptive statistics, t-test, ANOVA. Pearson correlation coefficients. and multiple regression were used to analyze the data. The majority of the students showed positive attitudes toward the moderate drinking behavior. Students perceived conflict messages. however. from their significant others about their moderate drinking behavior. While parents and other family members as sisters and brothers strongly supported the moderate drinking behavior of students, friends and school-mates did not. More than half of the students did not intend to reduce their alcohol consumption in the near future. Students' attitudes and perceived self-control were the predictor variables of the intention while subjective norms were not. Students who intended to reduce their alcohol consumption showed a more positive attitude, subjective norm, and higher perceived self-control scores than who did not. These students who were intent for moderate drinking behavior spent less money for drinking, had less opportunities to drink, and drank small amounts of alcohol Moderate Drinking Behavior programs focusing on students who were heavy drinkers, however, did not intend to reduce their alcohol consumption should be developed focused on their characters. Programs for students who intended to reduce their alcohol consumption also recommended to help the students' positive intention continued.

• Journal of the Korea Convergence Society
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• v.12 no.9
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• pp.343-350
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• 2021

The purpose of this study was to apply Ajzen's theory of planned behavior to identify factors that affect nursing students decisions to receive Human Papilloma Virus(HPV) vaccination. Data collection was done using self-report questionnaires with 195 nursing students in D city. Data were analyzed using percentage, mean, standard deviation, t-test, Pearson correlation analysis and hierarchial regression with the SPSS Win 25.0 Program. The mean score of intention to receive HPV vaccine was 5.24±1.66 out of a possible 7. In the hierarchial regression analysis, attitudes (β=.446, p<.001), perceived behavior control (β=.321, p<.001) subjective norm (β=.132, p=.041), to receive HPV vaccine were significant predictors and explained 54.4% of intention to receive HPV vaccine. it is suggested that promotion programs and social environment to encourage to think it positively and perceive it easy and convenient should be developed, with nursing students' educatinon for sex education and public relations activitiesas as a nursing educators.