• 모자간호학회지
• /
• v.3 no.1
• /
• pp.64-77
• /
• 1993

Recovery of functional status and affecting factors it were examined at 1 and 2 months after delivery in 111 women who defined as the resumption of household, self-care, social & community, and occupational activities, and assumption of infant care responsibilities. The data were collected by Tulman & Fawcett (1988)'s IFSAC questionnaire at 2 local hospitals & health center in Kwangju city & Chonnam province. The results were as follows : 1. Total mean scores of functional status were 2.3 points and increased in total functional status between 1 & 2 months after childbirth. The analysis revealed significant changes in 3 dimensions-household, social & community, and occupational activities-of IFSAC between 1 & 2 months after childbirth. 2. Mean scores of 5 dimensions of IFSAC were : self-care activities, 1.9 points : household activities, 2.7 points ; infant care responsibilities, 3.6 points ; occupational activities, 1.5 points ; and social & community activities, 1.6 points. 3. The job affected significantly the household, occupational activities and infant care responsibilities. And the complication of infant or mother affected significantly the infant care responsibilities in association with recovery functional status. Based on the findings and a review of the literature in regard to our understanding of recovery of functional status, the following recommendations were derived. 1. Future research needs to be policied concerning length of maternity leave after delivery on a firmer basis throught longitudinal study. 2. The data also nay be used to develop individual interventions to facilitate recovery from childbirth. 3. The IFSAC may be used to clinical assessments of functional status in the case of women cancer or obstetric and gynecologic operation.

• Smart Structures and Systems
• /
• v.21 no.5
• /
• pp.695-703
• /
• 2018

Based on monitoring data collected from the Nanjing Dashengguan Bridge over the last five years, this paper systematically investigates the effects of temperature field and train loadings on the structural responses of this long-span high-speed railway bridge, and establishes the early warning thresholds for various structural responses. Then, some lessons drawn from the structural health monitoring system of this bridge are summarized. The main context includes: (1) Polynomial regression models are established for monitoring temperature effects on modal frequencies of the main girder and hangers, longitudinal displacements of the bearings, and static strains of the truss members; (2) The correlation between structural vibration accelerations and train speeds is investigated, focusing on the resonance characteristics of the bridge at the specific train speeds; (3) With regard to various static and dynamic responses of the bridge, early warning thresholds are established by using mean control chart analysis and probabilistic analysis; (4) Two lessons are drawn from the experiences in the bridge operation, which involves the lacks of the health monitoring for telescopic devices on the beam-end and bolt fractures in key members of the main truss.

• Journal of Astronomy and Space Sciences
• /
• v.32 no.3
• /
• pp.237-245
• /
• 2015

A strategy is needed for a regional survey of geosynchronous orbits (GSOs) to monitor known space objects and detect uncataloged space objects. On the basis of the Inter-Agency Debris Committee's recommendation regarding the protected region of geosynchronous Earth orbit (GEO), target satellites with perigee and apogee of $GEO{\pm}200km$ and various inclinations are selected for analysis. The status of the GSO region was analyzed using the satellite distribution based on the orbital characteristics in publicly available two-line element data. Natural perturbation effects cause inactive satellites to drift to two stable longitudinal points. Active satellites usually maintain the designed positions as a result of regular or irregular maneuver operations against their natural drift. To analyze the detection rate of a single optical telescope, 152 out of 412 active satellites and 135 out of 288 inactive satellites in the GSO region were selected on the basis of their visibility at the observation site in Daejeon, Korea. By using various vertical view ranges and various numbers of observations of the GSO region, the detection efficiencies were analyzed for a single night, and the numbers of follow-up observations were determined. The orbital estimation accuracies were also checked using the arc length and number of observed data points to maintain the GSO satellite catalog.

• Transactions of the Korean Society for Noise and Vibration Engineering
• /
• v.19 no.3
• /
• pp.313-319
• /
• 2009

The blasting has a lot of economic efficiency and speediness but it can damage to a neighbor structure, a domestic animal and a cultured fish due to the blasting vibration, then the public grievance is increased. Therefore, we need to manage the blasting vibration efficiently. The prediction of the correct vibration velocity is not easy because there are lots of different kinds of the scale of blasting vibration and it has a number of a variable effect. So we figure the optimum line through the least-squares regression by using the vibration data measured in hard rock blasting and compared with the design vibration prediction equation. As a result, we confirm that the vibration estimated in this paper is bigger than the design vibration prediction equation in the same charge and distance. If there is a Gaussian normal distribution data on the left-right side of the least squares regression, then we can estimate the vibration prediction equation on reliability 50%(${\beta}=0$), 90%(${\beta}=1.28$), 95%(${\beta}=1.64$). 99.9%(${\beta}=3.09$). As a result, it appears to be suitable that the reliability is 99% at the transverse component, the reliability 95% is at the vertical component, the reliability 90% is at the longitudinal component and the reliability is 95% at the peak vector sum component.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.24 no.4
• /
• pp.359-365
• /
• 2006

Recently generated natural disaster of rainfall is transformed into nationwide generate form from a specific region of generated form that damages are steadily growing. such natural disaster lead to much influence such as socioeconomic, financial, physical and casualties etc, therefore model collection can be a step required establishment of systematically management foundation and offer of systematic solved plan. this study proposed to analyze and arrange pattern of disaster and systems designed plan and establishment further scientific, prompt service of disaster. with GIS technique for decision-making offer the necessary preliminary data. also, each city have orthophoto and digital elevation model that analyze real topography and situation. with establish management system in order to carry out appropriate service of disaster management and establish realistic management system. system had established that OpenGL make three dimensional illustrate scale image data and digital elevation model therefore a module of section analysis developed way to illustrate and to analyze topography and longitudinal section in screen.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.6
• /
• pp.2700-2706
• /
• 2013

The purpose of this study was to investigate the casual relationship between school adjustment, self-esteem and life satisfaction and academic achievement in elementary school students. This study utilized the NYPI's longitudinal data collected on elementary school students nationwide for 2012. Equation Modeling analysis was used to analyze 2,254 5th grade students' data. It was found that school adjustment was positively correlated with self-esteem, life satisfaction and academic achievement. School adjustment was directly associated with academic achievement. It was also confirmed that school adjustment indirectly explained academic achievement through self-esteem and life satisfaction. Future research directions and implications to teacher and institutions were discussed.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.11
• /
• pp.5819-5826
• /
• 2013

Purpose: The purpose of this study was to examine the effects of the simulation-based training for advanced cardiovascular life support on the knowledge and competence of nursing students. Method: The subjects were 22 nursing students, who ungraduated D university. Data were analyzed with SPSS/Win 18.0 program. Results: There was a significant improvement in knowledge and competence after receiving than before training. Conclusion: Simulation-based training for advanced cardiovascular life support is effective strategy for increasing the knowledge and competence of nursing students and will can provide basic data in development of standardized emergency nursing education programs. Further research is needed in the comparative analysis about various learning of advanced cardiac life support education and a longitudinal study of maintenance the knowledge and competence.

• Anxiety and mood
• /
• v.16 no.1
• /
• pp.1-8
• /
• 2020

Objective : This study aims to examine the association between exposure to suicide events and suicide ideation by analyzing the levels of suicide ideation among the groups with exposure to suicide death, non-suicide death, and no death in their social relationships. Methods : Data were derived from Wave I of the Longitudinal Study of Suicide Survivors' Mental Health. 1,998 adults nationwide selected using a stratified sampling method based on the Korean Census Data, were categorized into 3 groups with exposure to suicidal death, non-suicidal death, and no death. The levels of depression (Brief CES-D), subjective health status, and suicidal ideation (SSI) were measured. To examine the association between exposure to suicide and the level of suicide ideation, multiple regression analysis was used after controlling the socio-demographic and clinical factors including subjective health status and depression. Results : 32% reported their exposure to suicide. Compared to the other groups, the suicide-exposed group's level of depression and suicide ideation were significantly higher but the subjective health status was lower. Multiple regression model revealed that suicide exposure had a statistically significant association with suicidal ideation at p=0.000 even after controlling the clinical characteristics. Conclusion : HThe findings suggest that exposure to suicide is a risk factor for suicidal ideation. In the clinical field, it is necessary to consider patients' experience in exposure to suicide while treating and intervening in suicide-related cases. At the policy level, a mental health system for suicide prevention should consider this risk factor for those exposed to suicide in their family and social relationships.

• Korean Journal of Childcare and Education
• /
• v.13 no.2
• /
• pp.21-37
• /
• 2017

Objective: The current study aimed at examining the mediation effects of children's self-esteem and self-control in learning between perceived academic achievement at $4^{th}$ grade and $6^{th}$ grade. This article proposes that perceived academic achievement boosts self-esteem and self-control in learning and both in turn, influence subsequent perceived academic achievement. We especially attempted to empirically prove that a serial multiple mediation of self-esteem and self-control in learning between the perceived academic achievement at two time points exists. Methods: We analyzed the longitudinal data of 1,881 children from the $4^{th}$ to the $6^{th}$ wave data of the '2010 Korea Children and Youth Panel Survey (KCYPS)' by means of a Hayes's PROCESS(2012) program. Results: The results revealed that perceived academic achievement at $4^{th}$ grade influenced children's self-esteem and self-control in learning at $5^{th}$ grade. Children' self-esteem and self-control in learning subsequently predicted perceived academic achievement at $6^{th}$ grade. Children's self-esteem significantly predicted self-control in learning supporting the hypothesis of serial multiple mediation. Conclusion/Implications: In conclusion, children's self-esteem and self-control in learning behaviors both mediated the association between perceived academic achievement at $4^{th}$ grade and at $6^{th}$ grade. The findings imply the importance of consideration of both psychosocial and behavioral aspects in understanding the academic performance during childhood.

• Journal of Digital Convergence
• /
• v.18 no.9
• /
• pp.249-256
• /
• 2020

This study was to identify differences in mortality risk by living arrangements among older adults. We analyzed data from 3,827 older adults who took part in the 2014 Korean Longitudinal Study of Aging. Cox proportional hazards regression was used for data analysis. The significant factors associated with mortality risk in living with others were male, education level, self-rated health, limitation of instrumental activities of daily living, cognitive dysfunction, and depression. The significant factors associated with mortality risk in living alone were regular exercise, limitation of instrumental activities of daily living, and cognitive dysfunction. This study is significant in that it examined whether there are differences between mortality risk by living arrangements. According to the results of this study, nursing intervention should be developed to decrease mortality by living arrangements.