• 한국건강관리협회지
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• 제3권2호
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• pp.189-198
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• 2005

This study examined the applicability of the transtheoretical model(TTM) to understanding exercise behavior of early adulthood. A cross-sectional study was conducted and data wee collected from 1618 adults aged from 20 to 39 through internet survey. Major conclusions wee as follows: 1. Stage distribution for exercise behavior was 15.6%, 26%, 25%, 19%, 14.4% for precentemplation, contemplation, preparation, action, maintenance stages, respectively. 2. Behavioral processes were more frequently utilized than cognitive processes for action and maintenance stage. 3. Self-reevaluation, social liberation and reinforcement were frequently used in precontemplation, contemplation and preparation stages. Self-reevaluation, reinforcement, self-liberation were frequently used in action and maintenance stages. 4. Pros of exercise behavior began to be higher than cons of exercise behavior from the actions stage and continued to increase to maintenance stage. 5. Self-efficacy was higher in action stage than precontemplation, contemplation and preparation stages and the highest in maintenance stage.

• 한국항공운항학회지
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• 제29권4호
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• pp.134-141
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• 2021

As the domestic aviation industry grows, the aviation maintenance field is also growing rapidly. This change calls for more aircraft maintenance technicians, and interest in safety accidents is also increasing. Individual safety climate indicates the importance of safety in the organization. We expect that three individual factors (training effectiveness, procedure effectiveness, and work pressure) relate to safety behavior in the workplace via individual safety climate. The purpose of this research is investigating the relationship between individual factors and aircraft maintenance technician's safety behavior. Previous studies related to individual factors were examined for literature review. Based on the previous studies, research model was constructed. Hypothesis was verified by effected data from 305 samples were employed for final survey. The results show that individual factors were meaningful factors to effect perceived safety behavior, and safety knowledge & safety motivation were related to safety compliance & safety participation.

• 대한간호학회지
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• 제33권8호
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• pp.1101-1110
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• 2003

Purpose. The purpose of this study was to identify the stage of change of smoking cessation behavior and investigate factors associated with the stage of smoking cessation behavior according to the transtheoretical model. Methods. The participants, 297 smokers & quitters were selected by a stratified random sampling from 127 high school sophomore students in B city. Data were collected from April 6th to 16th, in 2002 using the structured self-report questionnaire. Results. The subjects were distributed in each stage of change of smoking cessation behavior: there were 46 subjects (15.5%) in precontemplation, 73 subjects (24.6%) in contemplation, 67 subjects(22.3%) in preparation, 56 subjects (18.5%) in action, 55 subjects (18.5%) in maintenance. Compared to the precontemplation and contemplation, people in preparation tended to smoke daily more and smoked for a shorter time, and as precontemplation progressed to the maintenance, past 1 year smoking cessation frequency increased and friends smoking decreased. Smoking onset age was the earliest in preparation, and the latest in maintenance. Helping relationships and self relationships are used a lot in precontemplation and also in contemplation. In preparation, self liberation and helping relationships are used a lot, in action, self liberation and helping relationships, and in maintenance, self liberation and environmental reevaluation. At each stage, the score of negative affect situation was the highest, but the one of negative affect situation, positive social situation, habitual strength, weight control decreased as precontemplation progressed to the maintenance. While the score of social pros and coping pros decreased with increasing stage, the one of cons tended to increase. Through stepwise discriminant analysis, it was found that social pros, smoking onset age, delf-libration were the most influencing powers among factors associated with the stages of smoking cessation behavior. Conclusions. This study suggested that, in developing an effective smoking cessation intervention for adolescents, all the stage of a client's cessation had to be assessed prior to applying intervention programs. In addition, the results of this study will become a pillar of smoking cessation program planning and application.

• 대한간호학회지
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• 제24권1호
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• pp.70-84
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• 1994

People experience health behaviors for themselves and theses have diversity according to each culture and people and further there is an inherent meaning in health behavior The purpose of this study was to explore the health cconcept of Korean people and their pattern of health behavior The research method was a questionaire including open questions and the subjests were 164 adults age from 21 to 61. The result of this study are as follows : 1. Perceived health concepts by adults were “possibility”, “responsibility”, “being free”, “happiness”, “brightness”, “power”, “life”, “importance”, “mental rest”, “state of nnonilliness”, “death” 2. Health behaviors carried out by Korean adults were “maintance of psychological comfort”, “exercise”, “work”, “maintance of balanced diet”, “having a hobby”, “eating health food”, “health check up”, “prevention of hazards”, “eating natural food”, “maintenance of personal relationships”, “rest”, “having religion”, “making contract with nature”, “relaxation”, “limit one’s tastes”. 3. The perceived purposes of health behavior by Koran adults were maintenance of a joyful life, health maintenance, health restoration, prevention of illness, achievement of reponsibility, haying a hobby, longevity, peaceful death. Korean health concepts in this study showed a trend that reflects the rule of family and forcused harmony and eating habits. Korean health behavior in this study showed a trend that forcuses on emotional comfort which reflects oriental thinking. The result of this study will contribute to build a theory of health behavior and to derive strategies of health behavior to promote health.

• Industrial Engineering and Management Systems
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• 제7권1호
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• pp.51-56
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• 2008

With growing demand for zero defects, predicting reliability of software systems is gaining importance. Software reliability models are used to estimate the reliability or the number of latent defects in a software product. Most reliability models to estimate the reliability of software in the literature are based on the development lifecycle stages. However, in the maintenance phase, the software needs to be corrected for errors and to be enhanced for the requests from users. These decrease the reliability of software. Software Reliability Growth Models (SRGMs) have been applied successfully to model software reliability in development phase. The software reliability in maintenance phase exhibits many types of systematic or irregular behaviors. These may include cyclic behavior as well as long-term evolutionary trends. The cyclic behavior may involve multiple periodicities and may be asymmetric in nature. In this paper, SGRM has been adapted to develop a reliability prediction model for the software in maintenance phase. The model is established using maintenance data from a commercial shop floor control system. The model is accepted to be used for resource planning and assuring the quality of the maintenance work to the user.

• International Journal of Railway
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• 제1권2호
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• pp.59-63
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• 2008

The maintenance effect is a peculiar factor applied to repairable systems such as rolling stocks. Conventional statistical analysis for failure times takes into account one of the two following extreme assumptions, namely, the state of the system after maintenance is either as "good as new" (GAN, perfect maintenance model) or as "bad as old" (BAO, minimal maintenance model). Most of the papers concerning the stochastic behavior of railroad systems assume two types of maintenance: perfect and minimal maintenance. However, Lee, Kim & Lee (2008) analyzed the failure data of a door system in Metro EMU and the effect of preventive maintenance was imperfect. It is seen that the imperfect maintenance is of great significance in practice. This article describes how to deal with the maintenance effect in reliability studies of rolling stocks. Maintenance policies under imperfect maintenance are described and the method is proposed to evaluate their performance.

• 지식경영연구
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• 제10권3호
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• pp.133-152
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• 2009

The purpose of this study is to enhance an understanding of employee's OCB(organizational citizenship behavior) in manufacturing innovations like a TPM(total productive maintenance). OCB is examined as a dependent variable in three dimensions; compliance behavior, altruistic behavior, and innovative behavior. The six determinants of OCB are considered based on previous literature : organizational culture, team climate, transactional leadership, transformational leadership, job satisfaction, and organizational commitment. And the moderating effect of TPM on the relationships between OCB and determinants are examined. Data is collected through questionnaires and interviews from 684 employees in the Korean medium-sized manufacturing company that are conducting TPM. The result indicates that the important influencing factors of OCB are team climate, organizational culture, and job satisfaction. And the moderating effect of TPM on the relationships between OCB and job satisfaction is founded.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.1450-1459
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• 2007

Line type rigid bearings for Open-Steel-Plate-Girder railway bridges have several problem in service, and they are unstable structurally. Thus, spherical bearings having advanced maintenance capability and device to resistance up-lift are developed and replace the existing ones. A experiment of maintenance for a new placed spherical bearings under real Open-Steel-Plate-Girder bridge is conducted and their good maintenance performance is proved. The dynamic behavior of the bridge is measured and analyzed for the two cases of the existing and replacing bearings. Therefore, the effect of the new spherical bearings on the railway bridge is assessed.

• 한국구조물진단유지관리공학회 논문집
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• 제7권3호
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• pp.115-124
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• 2003

본 연구에서는 공사중 계측 결과와 유지관리 계측 결과를 토대로 다양한 분석방법을 통하여 터널의 변위와 응력 등을 분석하였으며, 지반조건이 비교적 연약한 풍화대를 통과하는 지하철 터널의 거동을 분석하여 터널 라이닝의 역학적 특성을 분석하였다. 공사중 계측결과 상부 및 하부 반단면 굴착 완료시의 계측결과를 단순화하여 터널 굴착시 천단침하가 지표침하와 내공변위보다 크다는 것을 확인하였으며, 천단침하와 천단숏크리트 라이닝응력이 역해석 시에 가장 많이 사용되는 계측항목임을 알 수 있었다. 그리고, 간극수압 분석결과를 통해 배수형 터널에 설계시 적용되고 있는 잔류수압의 타당성을 분석하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1350-1358
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• 2008

Recently the study related to life cycle cost analysis of railway structure consisted of a complex is proceeded covering several range, which is considering the methodology of efficiency and rationalization for maintenance and analysing long-time behavior of the structure of looking at standpoint from asset management and safety. But LCCA(life cycle cost analysis) of railway structure was almost impossible as there were not anything datum for maintenance plan, such as maintenance periods related to each of components(painting and corrosion of steel, and cracking of elements, etc)and maintenance proportion, despite of its 100-year history. According, for collecting data related to railway truss bridge, bridge record cards and testing safety papers, and researching question, etc are surveyed and classified for LCC Analysis. Especially, LCC assessment on the side of assets-maintenance considering about initial cost, maintenance cost, and indirect cost is constructed. Maintenance period and complementary measure rate are very important in maintenance. To decide maintenance period, Baysian updating method is applied.