• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.482-491
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• 2018

This study was conducted to identify the conceptual definition and attributes of nurses' Tae-um based on the conceptual analysis method of Walker and Avant. The attributes of nurses' Tae-um were derived from the organizational culture, inexperienced new nurses that are victims, senior nurses that are perpetrators, alteration of teaching, verbal and physical violence experiences, and psychological and physical symptoms. The antecedents were due to excessive work, high work intensity, job stress, lack of workforce, poor working environment, lack of job ability of new nurses, organizational hierarchy, and power imbalance. Moreover, the consequences were physical and psychological symptoms, decreased efficiency, increased distrust, increased turnover intention, and decreased quality of patient care. Improvements of working conditions and social supports for expanding nursing staff and building a culture in which communication and mutual cooperation are used to solve the antecedents of Tae-um among nurses is necessary. This study suggests the need for more qualitative research on Tae-um in nurses, the development of tools that reflect the attributes of Tae-um in nurses, and the development of a program to improve the culture of Tae-um in nurses. This study is significant in that it provides a rationale for development of an adaptation program for new nurses by suggesting the antecedents of Tae-um and solutions for it.

• Women's Health Nursing
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• v.5 no.3
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• pp.410-419
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• 1999

This study sought to figure out women's functional status after childbirth under the Sanhujori. Functioal status was defined as the women's readiness to assume infant care responsibilities and resume her usual activities including household, social and community, self-care and occupational activity. A convenience sample of 211 women who are in the postpartal period of the range from 1 week to 3 months above and residing in Seoul. Korea was studied from January, 1997 to December, 1998 for two years. Mean age of respondents was 29.9 years and mean of the present postpartal period was 7.5 weeks. The present postpartal period was of 5-8 weeks 26.5%, 3-4weeks 26.1%, 9-12 week 23.7% and below 2 weeks 7.1%, 32.7% of women had a job and the mean period of return to job was 2.76 weeks. During Sanhujori the non professional care giver was family members from women's maiden home 73.5% and only 2% of husband. The period women needed for the recovery from now was 5.39 weeks and it means that women need 12.9weeks for recovery after childbirth. For the present subjective health status after childbirth, bad was 20.2%, good 18.3 and average 61.5% and for the recovery status, completely recovered 29.5%, slightly 61.8% and rarely 8.7%. The mean of functional status at the 7.5weeks was baby care activity 3.65, household 2.57, self-care 2.46, occupational 2.44 and social 1.53 in rank. Except baby care the functional status was generally low or very low. The related factors to the functional status were the period and subjective evaluation of Sanhujori women experienced, the present period of postpartum, and subjective feeling of recovery. This result strongly reflects the effects of Sanhujori culture and Sanhujori per se on women's postpartal life including functional status and reconfirmed the relationship between health status and the experience of Sanhujori after delivery as the previous findings from various study showed. It provides a challenge to the professional care givers to research further on the effects of Sanhujori on the health status, health recovery after abortion or delivery from the various aspects through the cross-sectional and longitudinal research for the refinement of the reality of Sanhujori not only as cultural phenomenon but as an inseparable factor influencing in women's postpartal healthy adaptation and for the appropriateness of intervention and quality of care for desirable health outcome.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.5
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• pp.1115-1125
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• 2009

Purpose: The purpose of this study was to investigate the Safety-practice and Its Related Factors among Elementary students in rural area, to provide the basic data for prevention for safety accident occurrence in order to improve the QOL. Methods: The subjects of this study were 549 elementary students using self-report questionnaires. The collected data was analyzed using descriptive statistics, t-test, ANOVA, Scheffe's test, Pearson correlation coefficient and stepwise multiple regression with SPSS 12.0 Program. Results: The mean score for level of the safety awareness was 3.55(${\pm}.36$) and of the safety practice, 2.98(${\pm}.48$). The score of Safety-practice was statistically significant difference according to students' gender(p= .028) and students' grade(p= .004), the number of friends(p= .002), the level of school life adaptation(p= .000), recognized learning proficiency(p= .000), personality(p= .005), curiosity(p= .003), the level of demand for safety education(p= .000), the level of safety-education conducted by parents(p= .000), the level of safety-education conducted by teacher(p= .000). Stepwise multiple regression analysis for Safety-practice revealed that the most powerful predictor was level of Safety-awareness and self-esteem, the level of safety-education conducted by parents explained 28.8% of the variance. Conclusions: Therefore, it is necessary to develop safety practice promotion program in order to enhance the quality of life of elementary students. Future studies need to be pursued to find various variances.

• International Commerce and Information Review
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• v.16 no.5
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• pp.87-114
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• 2014

The Uniform Customs and Practice for Documentary Credits (UCP) is a set of rules on the issuance and use of letters of credit. Historically, the commercial parties, particularly banks, have developed the techniques and methods for handling letters of credit in international trade finance. This practice has been standardized by the ICC (International Chamber of Commerce) by publishing the UCP in 1933 and subsequently updating it throughout the years. The ICC has developed and moulded the UCP by regular revisions, the current version being the UCP600. This latest version, called the UCP600, formally commenced on 1 July 2007. During the revision process, notice was taken of the considerable work that had been completed in creating the International Standard Banking Practice for the Examination of Documents under Documentary Credits (ISBP), ICC Publication 745. This publication has evolved into a necessary companion to the UCP for determining compliance of documents with the terms of letters of credit. It is the expectation of the Drafting Group and the Banking Commission that the application of the principles contained in the ISBP, including subsequent revisions thereof, will continue during the time UCP 600 is in force. This paper focuses on documents including various certificates, Packing List, Weight List, Beneficiary's Certificate, Analysiis, Inspection, Health, Phytosanitary, Quantity and Quality Certificates, Courier Receipts, Shipping Advice etc. and suggests some implications in the field.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.2
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• pp.259-267
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• 2008

This in vitro study aimed to investigate the influence of flowable composite lining with different thicknesses on the marginal quality. One hundred twenty cavities, each preparated with proximal boxtype( 3mm of bucco-lingual width, 2mm of mesio-distal depth and gingival margin of 1mm supra-CEJ) were randomly dived into four groups. group I : Tetric ceram filling alone(control group) group II: 0.5mm thickness Tetric flow + Tetric ceram filling group III: 1.5mm thickness Tetric flow + Tetric ceram filling group IV: 2.5mm thickness Tetric flow + Tetric ceram filling The followings are the results: 1. Group II showed significantly less microleakage compared to group I(control group)(p<0.05). 2. There was no statistically significant difference between group III, IV and group I(p>0.05). 3. Group II showed significantly less microleakage compared to group III, IV(p<0.05). 4. There was microleakage more or less in all group. It was concluded that 0.5mm flowable composite lining improved cavity adaptation and marginal sealing.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.6B
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• pp.595-604
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• 2009

The HCCA reserves the channel resources based on the mean data rate in IEEE 802.11e. It may cause either the waste of channel resource or the increase of transmission delay at MAC layer if the frame size is rapidly varied when a compressed mode video codec such as MPEG video is used. To solve these problems, it is developed that the packet scheduler allocates the wireless resource adaptation by according to the packet size. However, it is difficult to perform the admission control because of the difficulty with calculating the available resources. In this paper, we propose a CAC mechanism to solve the problem that may not satisfy the QoS by increasing traffic load in case of using EDCA. Especially, the proposed CAC mechanism calculates the EB of TSs using the traffic information transmitted by the application layer and the number of average transmission according to the wireless channel environment, and then determines the admission of the TS based on the EB. According to the simulation results of the proposed CAC mechanism, it admitted the TSs under the loads which are satisfied within the delay bound. Therefore, the proposed mechanism guarantees QoS of streaming services effectively.

• Journal of Life Science
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• v.21 no.3
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• pp.400-405
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• 2011

Autophagy, a highly conserved mechanism of internal quality control, is essential for the maintenance of cellular homeostasis and for the orchestration of an efficient cellular response to stress. During aging, the efficiency of autophagic degradation declines and intracellular waste products accumulate. Therefore, the aim of this study is to investigate the effects of exercise on autophagic response in skeletal muscle. Twenty-four Young (4 month) and Old (12 month) ICR-type white male mice were divided into a control group (CON: n=6) and exercise training group (Tr: n=6) after an adaptation period of 1 week. Exercise consisted of treadmill running at 16.4 m/min with a 4% incline, 40 min/day and 5 days/week for 8 weeks. Cervical dislocation was performed at 48 hours after the last round of exercise, after which the gastrocnemius skeletal muscle were immediately collected. The results of verifying autophagy formation showed that the Sarcopenia index was decreased in the Old mice compared to the Young. However, it increased with exercise training in the Old. Lipidation LC3-II, Becline-1, and Atg7 were decreased in the Old mice compared to the Young. However, Lipidation LC3-II was significantly increased in the trained Old mice (Young:1 Vs Old:$1.32{\pm}0.042$, p<0.05). Based on these data, we suggest that autophagy regulatory events are the attenuated in Old mice, but that they are enhanced with exercise training.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.388-397
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• 2012

The tennis was one of the most popular sport in the general physical education lesson. However there are many problems such as difficult of improvement tennis skill, lack of class days and so many students in a class. These reasons could ultimately damage the overall quality of class. The purpose of this research was to beginner students was fun and easy to learn. The tennis lesson using tools were 1.selective hitting ball, 2. high net hitting ball, 3. hitting orange ball. Scores of the experimental group(n=23) and the control group(n=21) were compared. In order to verify course content was the same 15 weeks, conducted a tennis teaching methods to take advantage of the tools. And tools to take advantage of the students who participated in a class analysis of the qualitative data (interviews, documents, questionnaires, observations, journals). As a result, the satisfaction scores of the experimental group were higher than those of the control group. The tennis lesson using tools to take positive effect(meaning, improved skill, easy, fun/curious/confident) and negative effect(difficulties of adaptation, a high challenge level) was induced. In summary of the quantitative/qualitative data 'Orange Ball' has a positive impact on the girls than boys and teaching methods using tools gave generally positive influence to students.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.44 no.3
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• pp.64-69
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• 2007

Motion control of the system is a position control of motor. Motion control of an uncertain robot system is considered as one of the most important and fundamental research directions in the robotics. Some distinguished works using linear control, adaptive control, robust control strategies based on computed torque methodology have been reported. However, it is generally recognized within the control community that these strategies suffer from the following problems : the exact robot dynamics are needed and hard to implement, the adaptive control cannot guarantee the performance during the transient period for adaptation under the variation, the robust control algorithms such as the sliding mode control need information on the bounds of the possible uncertainty and disturbance. And it produces a large control input as well. In this dissertation, a motion control for the unmanned intelligent robot system using disturbance observer is studied. This system is affected with an impact vibration disturbance. This paper describes a stable motion control of the system with the consideration of external disturbance. To obtain the stable motion independently against the external disturbance, the disturbance rejection is strongly required. To address the above issue, this paper presents a Disturbance OBserver(DOB) control algorithm. The validity of the suggested DOB robust control scheme is confirmed by several computer simulation results. And the experiments with a motor system is performed to give the validity of applicability in the industrial field. This results make the easier implementation of the controller possible in the field.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.5
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• pp.25-38
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• 2013

Future wireless systems will be required to support the increasingly nomadic lifestyle of people. This support will be provided through the use of multiple overlaid networks which have very different characteristics. Moreover, these networks will be required to support the seamless delivery of today's popular desktop services, such as web browsing, interactive multimedia and video conferencing to the mobile devices. Thus one of the major challenges in the design of these mobile systems will be the provision of the quality of service (QoS) guarantees that the applications demand under this diverse networking infrastructure. We believe that it is necessary to use resource reservation and adaptation techniques to deliver these QoS guarantee to applications. However, reservation and pre-configuration in the entire service region is overly aggressive, and results in schemes that are extremely inefficient and unreliable. To overcome this, the mobility pattern of a user can be exploited. If the movement of a user is known, the reservation and configuration procedure can be limited to the regions of the network a user is likely to visit. Our proposed Proxy-UMP is not sensitive to increase of the search cost than other schemes and shows that the increasing rate of total cost is low as the SMR increases.