• Journal of the Korean Data and Information Science Society
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• 제26권6호
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• pp.1573-1582
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• 2015

In lifetime data analysis, it is generally known that the lifetimes of test items may not be recorded exactly. There are also situations wherein the withdrawal of items prior to failure is prearranged in order to decrease the time or cost associated with experience. Moreover, it is generally known that more than one cause or risk factor may be present at the same time. Therefore, analysis of censored competing risks data are needed. In this article, we derive the Bayes estimators for the entropy function under the exponential distribution with an unknown scale parameter based on multiply Type II censored competing risks data. The Bayes estimators of entropy function for the exponential distribution with multiply Type II censored competing risks data under the squared error loss function (SELF), precautionary loss function (PLF) and DeGroot loss function (DLF) are provided. Lindley's approximate method is used to compute these estimators.We compare the proposed Bayes estimators in the sense of the mean squared error (MSE) for various multiply Type II censored competing risks data. Finally, a real data set has been analyzed for illustrative purposes.

• Child Health Nursing Research
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• 제26권2호
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• pp.238-253
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• 2020

Purpose: The purpose of this study was to explore the structure of variables in studies related to unmarried mothers (UMs) based on Neuman's systems model, and the stressors and stress responses of UMs. Methods: Whittemore and Knafl's methodology for integrative reviews was applied. The literature was searched using five electronic databases (KISS, KMbase, KoreaMed, NDSL, and RISS) and a total of 99 variables were collected from 15 studies published between 2009 and 2019. Results: The main stressors for UMs were a sense of loss and burden caused by childbirth and childrearing. The main stress responses were parenting stress and depression, respectively. Within the basic structure of variables related to UMs, self-esteem played a crucial role by helping UMs adapt to their situation. Meanwhile, social support of UMs was significantly correlated with parenting stress, depression, and self-esteem. Conclusion: In order to understand UMs' stress, is necessary to explore their sense of loss, burden, and self-esteem. Furthermore, it is important to assess the level of parenting stress and depression of UMs and to provide effective interventions to alleviate these stressors. The results of this study provide useful knowledge that can be applied to nursing assessment and interventions for stress management in UMs.

• 한국콘텐츠학회논문지
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• 제19권6호
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• pp.281-291
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• 2019

본 연구는 스트레스가 노인의 우울에 미치는 영향에서 사회적 지지의 조절효과와 자아존중감의 매개효과 검증을 목적으로 하였다. 본 연구대상은 만 65세 이상으로 종합사회복지관을 이용하는 노인 485명을 분석한 결과는 다음과 같다. 첫째, 노인의 스트레스가 우울에 미치는 영향에서 가족문제, 건강문제, 경제문제, 상실감은 우울에 유의미한 영향을 미치는 것으로 나타났다. 둘째, 노인의 자아존중감이 스트레스와 우울 간에 미치는 영향에서 스트레스의 가족문제, 경제문제, 상실감은 우울에 매개효과가 있는 것으로 나타났으며, 건강문제에서는 매개효과가 나타나지 않았다. 셋째, 노인의 사회적 지지가 스트레스와 우울 간에 미치는 영향에서 사회적 지지의 조절효과는 우울에 부적인 영향을 미치는 것으로 나타났다. 이러한 연구결과를 바탕으로 노인의 우울을 감소시키기 위한 사회복지의 실천적 함의를 제시하고자 한다.

• Journal of electromagnetic engineering and science
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• 제19권1호
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• pp.64-70
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• 2019

In this study, a compact series-fed center-fed open-stub (SFCFOS) linear array antenna for K-band applications is presented. The antenna is composed of a single-line 10-element linear array. A symmetrical Chebyshev amplitude distribution (CAD) is used to obtain a low sidelobe characteristic against a uniform amplitude distribution (UAD). The amplitude is controlled by varying the width of the microstrip patch elements, and open-ended stubs are arranged next to the last antenna element to use the energy of the radiating signal more effectively. We insert a series-fed stub between two patches and obtain a low mutual coupling for a 4.28-mm center-to-center spacing ($0.7{\lambda}$ at 21 GHz). A prototype of the antenna is fabricated and tested. The overall size of the uniform linear array is $7.04{\times}1.05{\times}0.0563{\lambda}_g^3$ and that of the Chebyshev linear array is $9.92{\times}1.48{\times}0.0793{\lambda}_g^3$. The UAD array yields a ${\mid}S_{11}{\mid}$ < -10 dB bandwidth of 1.33% (20.912-21.192 GHz) and 1.45% (20.89-21.196 GHz) for the CAD. The uniform array design gives a -23 dB return loss, and the Chebyshev array achieves a -30.68 dB return loss at the center frequency with gains of 15.3 dBi and 17 dBi, respectively. The simulated and measured results are in good agreement.

• 한국지열·수열에너지학회논문집
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• 제18권1호
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• pp.1-11
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• 2022

As abnormal climates occur due to the increase in greenhouse gases at home and abroad, various problems such as human casualties, crop damage, energy depletion, and economic loss due to heat diseases, which are one of the extreme climate phenomena, are following one after another. In response, the government has established the 'Climate Crisis Response Special Committee' since 2018, when it recorded the greatest damage in history due to heat waves, and has been carrying out budget formation and reform of laws and systems every year to respond to heat waves. However, in relation to the heat wave damage reduction facility that is being expanded with a large budget, there is no prior research related to the degree of heat loss due to the use of the facility, the difference in effects between specific groups, and the economic effect that comes back compared to the invested budget. Therefore, from a midto long-term perspective, it is expected that it will be difficult to establish a clear direction for policy making. Therefore, in this study, representative facilities were selected according to the principle of heat reduction among the currently expanded heat damage reduction facilities, and a questionnaire survey was conducted for users of each reduction facility (waterfall, awning, pond, and elastic pavement). Accordingly, the change in the sense of heat according to the use of the heat damage reduction facility was checked, and the change in the sense of heat according to the group characteristics (gender, age, metabolic rate) was analyzed to examine the characteristics of the relationship between the facility and the users.

• 한국전자통신학회논문지
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• 제10권11호
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• pp.1225-1230
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• 2015

WBAN을 위한 MAC 프로토콜은 의료용 센서 노드의 가변적인 데이터를 효율적으로 처리하기 위해서 응급상황에서 발생하는 트래픽을 가장 높은 우선순위로 처리하는 CSMA/CA(: Carrier Sense Multiple Access with Collision Avoidance) 알고리즘을 수행하게 된다. 노드가 전송하는 응급 메시지는 충돌이 발생하게 되고 응급 메시지 재전송으로 인한 전송 지연이 발생할 수 있으며 재전송으로 인한 에너지 낭비를 가져올 수 있다. 본 논문에서는 이러한 문제점들을 개선하기 위해서 우선순위 큐잉을 적용한 CSMA/CA 알고리즘의 경우 MAC 명령어 프레임과 데이터 프레임의 우선순위를 정하여 서로 다른 백오프 파라미터를 적용하고 충돌로 인한 프레임 손실을 최소화하는 알고리즘을 제안하였다. 성능평가 결과 제안한 MAC 프로토콜을 사용했을 때가 IEEE 802.15.6을 사용했을때 보다 충돌 확률이 감소하여 패킷 전송 처리율이 증가하고 패킷 손실량이 감소함을 보였다.

• 한국시조학회지:시조학논총
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• 제30집
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• pp.109-146
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• 2009

정완영 시조에 대해 학계에서는 일반적으로 동양적 사유세계가 잘 드러나 있다고 평가하고 있다. 본 연구는 기존 연구의 학문적 성취를 계승하고 심화 확대하는 작업의 일환으로 정완영 시조에 나타난 도가적(道家的) 경향을 분석하고자 한다. 정완영의 작품 중에서 도가적 특징이 두드러진 작품을 찾아 몇 가지 유형으로 분류한 결과 다음과 같은 결론을 얻었다. 정완영 시조에서 도가적 색채가 표출된 작품은 다음과 같이 세 가지 양상으로 유형화시킬 수 있다. 첫째, 정완영의 시조에는 상실감에서 비롯된 고향회귀의식이 드러나 있다. 예전의 모습과 달리 변해버린 고향, 고향에 돌아갈 수 없는 처지에서 느끼는 상실감을 극복하기 위한 방편으로 고향회귀를 꿈꾸고 있는 것이다. 이 작품들 속에서 고향의 의미는 상실감을 극복하기 위해 설정된 근원적, 본래적 의미의 고향이 주를 이루고 있다. 이는 노장사상(老莊思想)에서 추구한 '복귀기근(復歸基根)'의 개념과 상통할 것이다. 둘째, 정완영의 시조에는 순수성 추구를 통해 동심 회복을 열망하는 작품들이 있다. 봄을 통해 동심 회복을 노래한 작품, 유년의 꿈을 통해 동심 회복을 추구한 작품, 엄마에 대한 그리움을 통해 동심회복을 표현한 작품 등이 이에 속한다. 이러한 작품은 도가에서 지향한 '소박함, 연약함, 부드러움'을 추구한 의미로 해석할 수 있다. 셋째, 정완영의 시조에는 인간을 자연의 일부로 파악하고 자연과의 조화로운 삶을 지향한 작품들이 있다. 자신을 잊고 자타(自他)의 구별을 초월한, '물아양망(物我兩忘)'을 통해 자연과 인간과의 합일을 추구하고 있다. 이것은 도가에서 궁극적 도달 대상으로 설정한 자연으로의 회귀라고 볼 수 있을 것이다. 한편 이 연구가 앞으로 보완해야 할 과제는 다음과 같다. 먼저, 정완영 시조에 나타난 도가적 경향을 그의 생애 및 살아 온 시대 상황과 관련지어 분석해야 할 것이다. 그의 도가 관련 서적을 탐독한 독서 환경과 $1960{\sim}70$년대 근대화의 물결, 1980년대 시대 상황 등을 분석한 역사 전기적 방법에 의한 연구가 뒤따라야 할 것이다. 다음으로, 정완영 시조에 나타난 동양사상적 특징을 총체적으로 분석하고 정리하는 작업이 수반되어야 할 것이다.

• 혜화의학회지
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• 제2권2호
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• pp.219-246
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• 1993

In 1991, Obesity rate of South Korea has reached to 18.7%. Because of economical development, the pattern of diet is exchanged from carbohydrate to rich protein and fat. The more problem is not only obesity of adult but also one of little child. Obesity is induced to diabetes mellitus, hypertension, artherosclerosis, hyperlipoidemia. heart and C.V.A disease, etc. In Woman, special important ploblem is the complex of beauty about Woman's figure. In Oriental Medicine, the factor of obesity is mainly regarded as dampness. And there are many treatments and methods to body weight loss, but obesity patients dislike to use them because of their side effects and inconvenience, intolerance. Now ear acupuncture is applied on so many disease because of its easy handly, non-side effect and high efficiency in clinics. Here obesity acupuncture is used to ear and whole body acupuncture. Because they react eachother for lack point. Therefore, in order to investigate the effect of obesity acupuncture and develop non-drug, non-starvation etc, we analyzed 453 the cases of body weight loss patients treated with ear and whole body acupuncture in Oriental Medicine Hospital of Jeon-Ju Woo-Sug University from April.1.1992. to March.17. 1993. The results were summarized as follows. 1. Distribution of sex ; male (4.4%), Female(95.6%) 2. Distribution of age in descending order ; 30s, 20s, 40s, 10s, 50s, below 10s, abowe 60s. The 20s-30s are group made up 60.7% of the group. 3. Distribution of occupation in descending order; housewife, student, service, salaried, merchant, teacher, farmer, inoccupation. 4. Distribution of human coporal constitution in descending order : Tae-Eum-In, So-Eum-In, So-Yang-In. 5. Distribution of body height and weight, 155-164cm ; 71.1%, 60-70kg, 74.6% are majority. 6. Distribution of weight variation, 2-6kg(71.0%) is majority, also 13-14kg(0.4%). 7. Distribution of duration in descending order ; 1-3 years, 3-6 years, 1-12months, above 10 years but in success, 1-12 months, 1-3 years, 3-6 years, above 10 years. Therefore, we know that the shorter duration of obesity is, the more loss of body weight. 8. Past experiences to body weight loss; Yes(69.5%), No(30.5%). The success rate accordant with the past temporary experiences shows that the cases without experience is higher than the ones with experience. 9. In distribution of times(treatments), 10 times is top. The rate of body weight loss is the highest in 14 times. Therefore, I think that one would need at least 10 times. in order lose body weight 10. Distribution of body weight variation in treatments times is at 2 times(3-4kg loss), and surprisingly is 14kg loss at above 15 times. 11. Distribution of symptoms improvement, in descending order ; heavy sense in body, dec. of appetite, inc.of exercise, lumbago, edema, knee pain, inc.of urine, inc. of fullness sense, thirsty, disease of gynecology, white tung, chest burning, heart burning, dec.of tobacco, drink taste. motion sickness, allergy, water eczema, arthma, belching. 12. Distribution of snack; Yes(87.4%), No(78.6%) 13. Distribution of exercise; Yes(21.4%), No(78.6%) 14. Distribution of sleeping times, above 7 hours(79.0%) 15. Distribution of the reason to body loss, the complex of beauty(68.7%) is top. 16. Distribution of side effect in obesity acupuncture, constipation (17.4%) is top. 17. Distribution of method in body weight loss ; dietary treatment (31.1%), sauna(26.7%), exercise(19.7%), the center of body weight loss (15.0%) herb-med and starvation treatments (5.1%), hand-finger acupuncture (hand-foot acupuncture) is 1.6%, diet pill(0.3%), etc(0.6%).

• 동의생리병리학회지
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• 제19권6호
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• pp.1685-1688
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• 2005

We treated a 51 year-old female patient of neurogenic bladder. The patient complained of urinary incontinence, lack of urine sense, loss of right leg sense etc. The symptoms developed right after spinal stenosis surgery. The symptoms didn't show any improvement continually. But after admission and treatment in our hospital, symptoms were improved from severe to mild and the score of Assesment of Bladder function got better. We continued to prescribe the herbal medicine over 8 weeks and could observe that symptoms were improved. This result suggests that oriental medical therapy is useful enough to treat the neurogenic bladder. Therefore further study of the approach and application of this treatment for neurogenic bladder would be necessary.

• 성인간호학회지
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• 제15권1호
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• pp.56-66
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• 2003

Purpose: The purpose of this study is to describe the psychological aspects of experiences of men living in a homeless shelter in Seoul. This study focused on understanding about the life of the homeless in the shelter by Phenomenological method. Method: The participants in this study were seven men who are living in a homeless shelter in Seoul. The following data were collected though the in-depth interviews and analyzed by the Phenomenological analytic method of Giorgi. Result: There are five focal significances about the life of the homeless. (1) Unplanned Life : Difficult life comes from outside situation, Freedom, The acceptance of unconsciousness life, Laziness, Unreliability, The dissolute life, No purpose to life, Relying on drinking, (2) Self-rationalization : Feeling of defeat, Give up, Desire for a support system, Lack of willingness, Anxiety, Chivalry, Falsehoods, (3) Superficial Interpersonal Relationships : Ignorance, Pressure, Discord, Hiding from one anther, avoidance. (4) A sense of devestation : Negative perspective, Mental weakness, Difficulties in employment, ambivalance with social structure, The place to escape, Complaining against the opposite sex, Sense of regret, Lack of relationship with family, The lack of self-confidence, Loss of volition (5) The Hope of new life : Realization, Desire for change, Dreaming of married life, Dependence in God Conclusion: The conclusion of this study shows that the men in the shelter had various psychological reasons for being in the homeless shelter. Further studies need to be done to validate this information and formulate ways to assist these men with their psychological needs.