• 제목/요약/키워드: Physical disturbance

검색결과 345건 처리시간 0.024초

보의 설치에 따른 하상변동과 물리적 교란평가 분석 (Analyses of Riverbed Changes and Physical Disturbance Evaluations by Weir Installation in a Reach)

  • 최흥식;이웅희
    • 대한토목학회논문집
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    • 제34권4호
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    • pp.1203-1213
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    • 2014
  • 청미천의 일부구간을 대상으로 HEC-RAS를 이용하여 보의 설치 유무에 따른 수리 및 하상변동 특성을 분석하였다. 한국수자원공사(2008)에서 제시한 방법을 이용하여 물리적 교란을 평가하였다. 보의 설치에 따른 하상변동이 큰 구간에서의 물리적 교란점수는 낮게 나타났다. 보의 설치에 따른 하상변동과 그에 따른 물리적 교란영향 범위는 거의 일치하여 하상변동은 하천에서 물리적 교란을 야기하는 중요한 인자임을 확인하였다. 기존 보에 의한 교란의 영향이 없는 상류와 하류 지점에 추가적인 보를 설치할 때는 일정구간에 보의 설치 이전과 유사한 교란점수로 나타나 추가적인 하천교란이 발생하지 않았다. 교란의 영향범위 상류와 하류의 끝단에 추가적인 보를 설치한 경우 전 구간에 걸쳐 교란의 영향 나타났다. 물리적 교란 영향범위가 중첩되도록 상류와 하류에 추가적인 보를 설치한 경우 물리적 교란양상의 중첩으로 전 구간의 교란점수는 매우 낮게 나타났다. 따라서 하천에서 보의 설치는 하상변동과 교란의 영향범위보다 충분히 떨어진 위치에 설치할 때 하천의 물리적 교란을 최소화할 수 있다.

자세동요에 있어 선행적 자세적응이 균형수행력에 미치는 영향 (The effect of Anticipatory Postural Adjustment on Balance Performance in Postural Disturbance)

  • 채윤원;김명훈;조병모
    • The Journal of Korean Physical Therapy
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    • 제12권1호
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    • pp.65-71
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    • 2000
  • This study investigated the effect of anticipatory postural adjustment on balance performance in postural disturbance. Any action performed by standing subject is generally accompanied by compensatory postural activities, which reduce or abolish the postural disturbance generated by the movement and keep the subjects' center of gravity within the supporting base. These Postural activities arc triggered by either anticipatory and feedback postural control. We studied the difference of anticipatory and feedback postural control in postural disturbance. The subjects were standing on a foot plate with eyes closed, holding a lead of $5\%$ of their own body weight in their hands. The condition of anticipatory postural adjustment was applied voluntarily releases the a load. The condition of feedback postural control was applied that the load was unpredictably removed. We concluded that anticipatory postural adjustment becomes more efficient to postural performance in postural disturbance.

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하천정비에 의한 하천의 물리적 교란 평가 - 남강과 영천강을 대상으로 - (Assessment of Physical Stream Disturbances by River Improvement - Case Studies of Nam River and Youngcheon River -)

  • 김기흥
    • 한국환경복원기술학회지
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    • 제12권3호
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    • pp.83-97
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    • 2009
  • The objects of study is to propose criteria for physical river disturbance assessment and as case study to show the application results for river improvement. For this purpose, the river disturbance assessment method for past disturbance process and the present-day potential natural state of stream is proposed. To assess the disturbance of the Youngcheon River caused by river improvement, One ares of Nam River was selected for the reference reach and two areas of Youngcheon River were selected for the comparison reach. And these reaches were surveyed and analyzed according to applying criteria of the river disturbances assessment. The assessment indices were physical factors as like epifaunal (bottom), embededness, velocity/depth regime, sediment deposition, channel flow status, channel alteration, frequency of riffles, bank stability, vegetative protection and riparian zone etc. The results showed that physical river environment in Youngcheon River area was disturbed by artificial revetment and bed excavation, consequently this disturbance give rise to impact of ecosystem in river. Hereafter, the criteria for river disturbance assessment are needed to consider various river characters as bed materials and bed slop etc.

하천구조 개선에 따른 어류 서식적합도와 물리적 교란의 상관분석 (A Correlation Analysis between Physical Disturbance and Fish Habitat Suitability before and after Channel Structure Rehabilitation)

  • 최흥식;이웅희
    • Ecology and Resilient Infrastructure
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    • 제2권1호
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    • pp.33-41
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    • 2015
  • 본 연구는 어류서식적합도 향상을 위해 유전자알고리즘을 이용한 하천의 구조개선 방안을 제시하였다. 하천구조 개선에 의한 수리특성의 변화에 따른 어류 서식적합도와 물리적 교란양상과의 상관특성을 분석하였다. 원주천의 하천 환경조사와 어류의 군집특성을 이용하여 수중 생태계를 대표할 수 있는 복원 목표어종으로 참갈겨니를 선택하였다. 참갈겨니의 서식적합지수를 사용한 서식적합도 분석은 PHABSIM 모형을 이용하였다. HEC-RAS를 이용한 수리특성 분석과 하천교란 평가방법을 이용하여 물리적 교란평가를 수행하였다. 서식적합도 향상을 위한 최적의 저수로 폭의 개선방안을 제시하였다. 하천구조의 개선에 의한 수리특성의 변화에 따른 서식적합도와 물리적 교란의 상관성을 분석하여 어류 서식적합도와 물리적 교란 평가점수의 향상이 있음을 확인하였다. 서식적합도 향상을 위한 하천의 구조 개선은 물리적 교란의 평가점수의 향상을 가져옴을 확인하였다.

전립선암환자의 수면장애 (Sleep Disturbance in Prostate Cancer Patients)

  • 전성숙;김동희;김민영
    • 기본간호학회지
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    • 제17권2호
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    • pp.169-176
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    • 2010
  • Purpose: This study was done to investigate clinical characteristics and risk factors for sleep disturbance in patients with prostate cancer. Method: Participants were recruited from P hospital outpatient clinic from March 23 to April 20, 2006, and 101 participants completed a questionnaire assessing general and clinical characteristics, sleep quality, physical symptoms and psychological symptoms such as anxiety and depression. The data was analyzed using the SPSS 12.0 program. Results: In this study, 29.7% of the patients reported sleep disturbance. Cancer diagnosis related factors which affected sleep disturbance were onset (55.3%) and aggravation (83.3%). Habitual sleep efficiency of patients with sleep disturbance was as follows: bedtime was 10 PM, wake-up time was 6AM, sleep duration was six hours and twenty minutes. Risk factors for the presence of sleep disturbance included metastasis, the presence of intestinal symptoms, depression and anxiety. Conclusion: Sleep disturbance is a frequent problem associated with prostate cancer and seems to be influenced by aggravation of illness and the presence of physical and psychological symptoms.

안정하도 설계에 따른 물리적 교란개선 평가와 서식적합도 분석 (Physical Disturbance Improvement Evaluation and Habitat Suitability Analysis by Stable Channel Design)

  • 이웅희;최흥식
    • Ecology and Resilient Infrastructure
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    • 제3권4호
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    • pp.285-293
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    • 2016
  • 본 연구는 원주천을 대상으로 하천시설물의 최적 설계를 위한 안정하도 평가와 물리적 교란개선 평가를 수행하였다. 안정하도 설계를 위한 구간별 안정경사를 분석하였으며, 안정경사를 만족하기 위한 하천시설물의 개선 시나리오를 도출하였다. 그에 따라 각 시나리오에 대한 물리적 교란개선 평가를 통해 안정하도 설계와 물리적 교란개선을 위한 최적의 시나리오를 선정하였다. 아울러 안정하도 설계와 물리적 교란개선을 위한 하천시설물의 개선 시 물리 서식처의 변화를 분석하였다. 원주천의 하천 환경조사와 어류의 군집특성을 이용하여 수중 생태계를 대표할 수 있는 복원 목표어종으로 참갈겨니를 선택하였다. 참갈겨니의 서식적합지수를 사용한 서식적합도 분석은 PHABSIM 모형을 이용하였다. 예측 평가를 수행한 결과 서식적합도와 가중가용면적은 소폭 감소하는 것으로 나타났으나, 하천시설물의 개선에 따른 영향은 아닌 것으로 나타났다. 따라서 원주천의 물리적 건전성과 안정성을 제고할 수 있는 하천시설물의 배치 방안을 제시하였으며, 그에 따른 물리 서식처의 변화는 영향이 없는 것을 확인하였다.

물리적 교란 저감을 위한 안정하도의 설계와 서식적합도 분석 (Stable Channel Design for Physical Disturbance Reduction and Analysis of Habitat Suitability)

  • 이웅희;문형근;최흥식
    • Ecology and Resilient Infrastructure
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    • 제4권3호
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    • pp.169-179
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    • 2017
  • 본 연구는 원주천을 대상으로 안정하도 설계에 따른 하상변동 양상을 분석하여 물리적 교란과 서식적합도 (Habitat suitability, HS)를 정량적으로 평가하였다. 현재의 원주천 대상구간에 대한 안정하도 평가 결과 총 20개 구간 중 17개 구간이 안정하였으며, 3개 구간이 불안정한 것으로 나타났다. 물리적 교란개선 평가 (Physical disturbance improvement evaluation, PDIE) 결과 구간평균 112.17점으로 현재 양호한 교란개선 상태를 나타냈다. 어류의 물리서식처 분석은 원주천의 최우점종인 참갈겨니의 서식적합지수를 이용하였다. 물리서식처 분석 결과 HS는 0.16, 가중가용면적 (Weighted usable area, WUA)은 $347.68m^2$으로 나타났다. 불안정 하도의 안정하도 설계를 위해서 시설물의 개선 도입 철거와 하도를 준설하는 방법을 이용하였으며, 하상변동 양상에 따른 PDIE와 서식적합도의 변화를 분석하였다. 시설물의 개선 도입 철거 시 19개 구간에서 안정하도 설계가 가능하였으며, PDIE는 117.53점, HS는 0.14, WUA는 $313.37m^2$로 나타났다. 하도의 준설 시 20개 전구간에서 안정하도 설계가 가능하였다. PDIE는 116.50점으로 나타났으며, HS는 0.16, WUA는 $332.14m^2$으로 나타났다. 따라서 원주천의 물리적 건전성과 안정성을 제고할 수 있는 하도설계 방안을 도출하였으며, 그에 따른 물리적 교란과 물리서식처의 변화는 영향이 없을 것으로 분석되었다. 아울러 물리적 교란과 물리서식처의 상관 분석을 위해 구간별 유속과 수심 및 여울과 소의 출현 빈도를 분석하였다. 분석 결과 여울과 소의 분석은 물리서식처의 평가 결과와 유사하게 나타남을 확인하였다.

향 요법 마사지가 골관절염 여성 노인의 통증, 신체기능, 수면장애 및 우울에 미치는 효과 (Effects of Aromatherapy Massage on Pain, Physical Function, Sleep Disturbance and Depression in Elderly Women with Osteoarthritis)

  • 최인령
    • 여성건강간호학회지
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    • 제12권2호
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    • pp.168-176
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    • 2006
  • Purpose: This study was to investigate the effects of aromatherapy massage on pain, physical function, sleep disturbance and depression in elderly women with osteoarthritis. Method: The study design was a quasi-experiment design with a non-equivalent control group pre and post-test. The study pool included elderly female patients older than 65years old suffering from osteoarthritis. Results: Pain in the experimental group after the aromatherapy massage was significantly decreased than that in the control group. The physical disability in the experimental group after the aromatherapy massage was significantly decreased than that in the control group. The sleep disturbance in the experimental group after the aromatherapy massage was significantly decreased than that in the control group. The depression in the experimental group after the aromatherapy massage was significantly decreased than that in the control group. Conclusion: Aromatherapy may be adopted as an effective nursing intervention for osteoarthritis.

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입원환자의 수면 방해 요인이 수면의 질에 미치는 영향 (Factors Influencing Quality of Sleep of Disturbance Factors Sleep by Inpatients)

  • 이미련;남문희
    • 한국임상보건과학회지
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    • 제2권3호
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    • pp.176-187
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    • 2014
  • Purpose. The purpose of this study was to identify the factors affecting quality of sleep and sleep disturbance among inpatient. Methods. A descriptive correlational study was conducted Participants were 200 inpatient in a hospital located in B city. A structured questionnaire was used for data collection. Collected data were analyzed using descriptive statistics, t-test, one-way ANOVA, Pearson's correlation, and stepwise multiple regression. Result. Hospitalized patient's score of sleeping quality was 38.26 on an overall scale of 60, indicating it to be higher than 'Medium (30 points). Almost hospitalized patient in this study suffer from sleep disturbances. As results of univariate analyses, Educational level, Departments, Why hospitalized, Insomnia / depression, Chronic Disease, Scale of pain, physical symptoms, environmental factors, emotional factors, and sleep promoting behavior, disturbed sleep among hospitalized. However, the result of stepwise multiple regression analysis identified that physical symptoms, environmental factors, emotional factors, sleep promoting behavior, and Why hospitalized disturbed sleep and were significant score of sleeping quality for hospitalized and these sleep disturbance factors accounted 46.8% of variance of sleeping quality among hospitalized. Conclusion. These findings suggest that hospitalized patients with poor sleep quality should have their health carefully screened for physical symptoms, environmental factors, emotional factors, sleep promoting behavior, and why hospitalized. In addition, we recommend the development of a nursing program for improving sleep quality.

Botulinum Toxin Therapy in a Patient with HHH Syndrome with Gait Disturbance: A Case Report

  • Kim, Dong-Hyun;Choi, Yoon-Hee
    • 대한통합의학회지
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    • 제9권2호
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    • pp.105-108
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    • 2021
  • Background : Hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome is a rare, autosomal recessive metabolic disorder which is caused by genetic mutations that disrupt the urea cycle. It is characterized by variable clinical presentation and the age of onset. Patients may present with gait disturbance and progressive paraplegia and muscle tightness in the lower extremities. The use of botulinum toxin in metabolic disease has rarely been discussed. We describe a case of a 14-year-old-boy with HHH syndrome, who presented with a several - month history of gait disturbance and lower extremity weakness. Case presentation : A 14-year old male had a history of recurrent upper respiratory tract infections, occasional vomiting, loss of appetite, and general weakness, all of which started since he was 10 months old. He was diagnosed with HHH syndrome at one year of age. At the age of 14, he was referred for the assessment and treatment of his gait disturbance and aggravated weakness of the lower extremities. Brain MRI, electrodiagnostic study and blood test were performed to exclude any lesions related to neurologic dysfunction. Botulinum toxin type A were injected into muscles of adductor longus, adductor magnus, lateral and medial hamstring, and lateral and medial gastrocnemius muscle heads under needle electromyography guidance to reduce lower limb spasticity. Intensive physical therapy including gait training and stretching exercise of adductor and calf muscles were also provided. After intensive physical therapy and botulinum toxin injection to reduce lower limb spasticity, he was able to ambulate for 20 meters independently without any walking aids. There were no adverse events after the injection. Conclusion : Botulinum toxin injection is a safe and effective therapy for patients with HHH syndrome who suffer from gait disturbance.