• Journal of Korean Biological Nursing Science
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• v.5 no.2
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• pp.5-12
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• 2003

Purpose : The purpose of this study was to identify the relationship between fatigue and physiological factors in patients on hemodialysis. Method : Data were collected between June 1 and 7, 2003 using a structured questionnaire which included general characteristics, Visual Analogue scale and laboratory result. Result : Fatigue score changes is the mean of predialysis fatigue score was 4.36 and postdialysis fatigue score 4.66. There were statistically significant differences in score of postdialysis to sex, education and admission. The relationship between predialysis fatigue and interdialytic weight gain showed a positive correlation. The relationship between postdialysis fatigue and Cr showed a negative correlation. Conclusion : Nursing Management program should be developed to fatigue factors in patients on hemodialysis.

• Women's Health Nursing
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• v.23 no.2
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• pp.109-116
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• 2017

Purpose: The purpose of this study was to test effects of music therapy on stress due to preterm labor and uterine contraction in pregnant women with preterm labor. Methods: An experimental research design was used. Participants were 35 pregnant women with preterm labor who were between 20 to 37 weeks of pregnancy: control group (n=18) received only tocolytic drugs, while experimental group (n=17) received additional music therapy. In the experimental group, Traumerei was applied before Non-Stress Test (NST) from the second day to fifth day after admission as music therapy. Results: There was a statistically significant difference in stress due to preterm labor (z=-3.368, p<.001) between the two groups. Conclusion: The music therapy is an effective method for reducing the stress of pregnant women with preterm labor.

• The Korean Journal of Applied Statistics
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• v.25 no.4
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• pp.651-659
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• 2012

In this paper we developed a statistical model for circular data with noises. In this case, model fitting by single circular model has a lack-of-fit problem. To overcome this problem, we consider some mixture models that include circular uniform distribution and apply an EM algorithm to estimate the parameters. Both von Mises and Wrapped skew normal distributions are considered in this paper. Simulation studies are executed to assess the suggested EM algorithms. Finally, we applied the suggested method to fit 2008 EHFRS(Epidemic Hemorrhagic Fever with Renal Syndrome) data provided by the KCDC(Korea Centers for Disease Control and Prevention).

• Korean Parent-Child Health Journal
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• v.9 no.2
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• pp.140-149
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• 2006

Purpose: The current descriptive study examined the health and healthcare status of preschoolers in poverty group compared to those of comparison group. Method: Data were collected from 51 mothers in federal poverty group and 49 in low-income group and 200 mothers in normal income comparison group in one city. The instruments used for this study were Korean CBCL and health related questionnaire. Results: Public assistance group showed more low-birth-weight infants, developmental delay, and hospital admission experiences. Their compliance for vaccination and congenital metabolic disorder test were lower than those of comparison group. Preschoolers' behavior problems were not significantly different depending upon the income of the group. Conclusion: Preschoolers' health and healthcare status are affected by the socioeconomic characteristics of the family. It indicated an need for anticipatory guidance and early intervention that might help to prevent or ameliorate potential health problems in poverty.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.390-391
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• 2017

본 논문에서는 배터리의 수명을 연장할 수 있는 효율적인 충전방법에 대해 제안하였다. 제안된 방법은 우선 충전하고자 하는 배터리의 전압과 전류를 측정한다. 측정된 배터리의 전압과 같은 값에서 1.5배 값까지 단계적으로 전압을 상승시켜 배터리의 상태를 검사한다. 배터리의 반응 상태들 중에서 충전이 가장 안정적인 전압을 결정한다. 전압이 결정되면 배터리의 전류 값을 배터리 용량의 1/3에서 1/10까지 단계적으로 조율하여 충전을 하도록 한다. 이러한 방법은 배터리를 보호하면서 충전 시간을 축소시켜 효율적으로 배터리를 관리할 수 있는 방법이다. 제안된 방법의 효율성을 입증하기 위해 핸드폰 보조배터리로 가장 많이 사용되고 있는 리튬 폴리머 배터리를 이용하여 실험하였다. 실험 결과 충전시간의 감소와 안전성 등의 효율성이 입증되었다.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.4
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• pp.107-118
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• 2007

A single-server queueing model with infinite buffer and batch arrival of customers is considered. In contrast to the standard batch arrival when a whole batch arrives into the system at one epoch, we assume that the customers of an accepted batch arrive one-by one in exponentially distributed times. Service time is exponentially distributed. Flow of batches is the stationary Poisson arrival process. Batch size distribution is geometric. The number of batches, which can be admitted into the system simultaneously, is subject of control. Analysis of the joint distribution of the number batches and customers in the system and sojourn time distribution is implemented by means of the matrix technique and method of catastrophes. Effect of control on the main performance measures of the system is demonstrated numerically.

• Journal of Korean Academy of Nursing Administration
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• v.12 no.2
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• pp.196-203
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• 2006

Purpose: The Purpose of this study was to identify the relationship between leadership styles and empowerment of nursing students. Method: The subjects were 386 nursing students who were in college and university. The data were collected from July 26 to September 18, 2004 by the structured questionnaires. For data analysis, descriptive statistics, Pearson correlation coefficient, t-tets and ANOVA with SAS package were used. Results: Transformational leadership showed a significant difference according to school career, present grade, interpersonal relations, admission motive, satisfaction degree for nursing, satisfaction degree for practice, meaning on nursing job and transactional leadership showed a significant difference according to last session study score, satisfaction degree for nursing. Empowerment showed a significant difference according to school career, present grade, interpersonal relations, satisfaction degree for nursing, satisfaction degree for practice, meaning on nursing job. Charisma, intellectual stimulation, individual consideration and contingent reward perceived by nursing students were positively related to empowerment. Management by exception perceived by nursing students was negatively related to empowerment. Conclusion: The result of this study may be helpful in empowerment improvement of nursing students.

• Journal of Korean Dental Science
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• v.10 no.2
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• pp.82-86
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• 2017

Oral and maxillofacial surgery (OMFS) trauma cases are commonly treated under general anesthesia. The purpose of this case report is to introduce an alternative method of anesthesia in patients who refuse general anesthesia. A combination of dexmedetomidine and ketamine for sedation anesthesia in 3 frequent fracture types in the field of OMFS-Le Fort I fracture, mandibular fracture, and alveolar bone fracture-was used. Dexmedetomidine as the single agent has not shown stable success rates for invasive procedures. To overcome some of the pitfalls with dexmedetomidine, combination sedation using ketamine was performed. Visual analogue scale scores were recorded postoperatively. Dexmedetomidine combined with ketamine administration provided safe and effective sedation and anxiolysis for surgical reduction and internal fixation of OMFS fractures. It showed advantages of decreased admission time, reduced expenses, minimal pain, and reduced anesthetic burden for the patient thus ultimately increasing overall satisfaction.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.279-281
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• 2016

이동 멀티미디어 서비스의 서비스 지속성은 패킷 손실과 전송 지연에 영향 받기 때문에 효율적인 핸드오버 제어가 필수적이다. 본 연구에서는 LTE-A 이동통신시스템에서 멀티미디어 서비스의 QoS를 보장하기 위한 핸드오버 수락 제어 방법을 제안한다. 이동 단말기 및 기지국의 상태 정보 변화에 따라 핸드오버 수락 여부를 동적으로 제어할 목적으로 네 가지 종류의 시스템 간 핸드오버를 지원하고자 하는 모듈간의 연계 순서도를 제시한다.

• Journal of Information Technology Services
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• v.9 no.3
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• pp.83-93
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• 2010

P2P streaming technology has advantages of scalability and availability comparing to the popular IP multicast. This paper proposes an approach to apply the P2P streaming technology to the delay-sensitive multimedia multicast applications. In order for the P2P streaming to be applied to the delay-sensitive applications, prior construction of delay-guaranteed overlay network is necessarily required. Moreover, the delay-guaranteed overlay network should be able to be kept even when the hand-overs occur owing to the departures of the intermediate P2P peers. This paper proposes a delay-guaranteed overlay network construction method by using the bandwidth and end-to-end delay based admission control and the backup peer based hand-over control mechanism.