• Title/Summary/Keyword: PC Stairs

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Development of Improved PC Stair Connections Using U-Rods (U형 강봉을 사용한 PC 계단 접합부 개발)

  • Chang, Kug-Kwan;Seo, Dae-Won;Chun, Young-Soo
    • Land and Housing Review
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    • v.2 no.4
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    • pp.509-516
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    • 2011
  • Compared with the traditional RC system, precast stairs can save construction time, reduce the cost of concrete casting, etc. This paper focuses on an investigation of improved continuous longitudinal joint details for PC stair systems. The performance of the precast concrete stair connections subjected to displacement control cyclic loading is compared with that of the monolithic connection. The developed connection is composed of U-rods and clamp joint metals. This paper proposes precast stair connection with improved structural performance and experimentally evaluates the structural performance of the proposed joints in terms of maximum load, displacement ductiliy, strain, crack and failure modes.

Bathroom and approach design details evaluated by the elderly in Daejeon city (대전시 거주 노인의 욕실 및 통로공간 디자인에 대한 중요도 평가)

  • 이지숙;박정아
    • Korean Institute of Interior Design Journal
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    • no.41
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    • pp.121-128
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    • 2003
  • This study was purposed to find that the elderly in Daejeon city evaluated design details in bathroom, stairway, entrance etc. On the base of housing expenses and an administrative district, the elderly over 65 were chosen and interviewed by well-trained investigators and 583 case was analyzed through SPSS PC 10.0. The results of this study were as follows ; they said a bathtub was necessary, the floor was not slippery, the height of basin was not high and the grab bar around toilet was not in bathroom and emergency bell was not in house. The elderly pointed out that the non-slip floor, grab bar, bathtub in bathroom and non-slip floor in entrance and stairs should be designed carefully. By the condition of the elderly' health and independent daily living and experience of housing, the evaluation of importance on bathroom and approach design by the elderly were different.

The Method of Navigation-speed Processing for the Unlimited-track Mobile Robot (무한궤도 이동 로봇의 주행환경 처리 방법)

  • Choi, Kwang-Sun;Park, Ki-Doo;Choi, Han-Soo
    • Proceedings of the KIEE Conference
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    • 2001.07d
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    • pp.2393-2395
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    • 2001
  • The mobile robot is used as an instrument of transportation in automated plant. But the greater part of the moving method is the wheel-type. The wheel-type robot is easier control than the track-type, However the track-type is better than the wheel-type in bad landform(bend landform, an incline plane, stairs). In this paper, we propose the navigation algorithm of track-type robot in order to improve a defect of wheel-type. We experiment in bend landfrom and even ground to differentiate the navigation method. To estimate robot pose, we use the 80196 in a close distance and the vision-board in a long distance. Each data is managed in main PC and then the part of managing correspond to every sensor. We also use twelve supersonic wave-sensors to recognize external surroundings. As the result of experiment, we analyze the algorithm of control and make possible surroundings-adaptation.

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The Study on Fire Phenomena in The Deeply Underground Subway Station (대심도 지하역사에서의 화재현상 연구)

  • Jang, Yong-Jun;Kim, Hag-Beom;Lee, Chang-Hyun;Jung, Woo-Sung
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.1773-1780
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    • 2008
  • When the fire occur in the deeply underground subway station, the difficulties of passenger evacuation are expected because of many stairs to the exit. In this study, SOONGSIL-University station (7 line, 47m depth) is the one of the deepest subway stations of the each line in the Seoul metro. The numerical computational-simulation was performed for the fire driven flow in the subway station. Hot and smoke flow was analyzed from the simulation results. The proper plan of evacuation against fire was considered through the results. The fire driven flow was simulated using FDS code in which LES method was applied. The Heat Release Rate was 10MW and the ultrafast model was applied for the growing model of the fire source. The proper mesh size was determined from the characteristic length of fire size. The parallel computational method was employed to compute the flow and heat eqn's in the meshes, which are about 10,000,000, with 6cpu of the linux clustering machine.

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A Study on Fall Accident (1개 종합병원 환자의 낙상에 관한 조사)

  • Lee, Hyeon-Suk;Kim, Mae-Ja
    • The Korean Nurse
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    • v.36 no.5
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    • pp.45-62
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    • 1998
  • The study was conducted from November 1995 to May 1996 at the one general hospital in Seoul. The total subjects of this study were 412 patients who have the experience of fall accident, among them 31 was who have fallen during hospitalization and 381 was who visited emergency room and out patient clinic. The purposes of this study were to determine the characteristics, risk factors and results of fall accident and to suggest the nursing strategies for prevention of fall. Data were collected by reviewing the medical records and interviewing with the fallers and their family members. For data analysis, spss/pc+ program was utilized for descriptive statistics, adjusted standardized $X^2$-test. The results of this study were as follows: 1) Total subjects were 412 fallers, of which 245(59.5%) were men and 167(40.5%) were women. Age were 0-14 years 79(19.2%), 15-44 years 125(30.4%), 45-64 years 104(25.2%), over 65 years 104(25.2%). 2) There was significant association between age and the sexes ($X^2$=39.17, P=0.00). 3) There was significant association between age and history of falls ($X^2$=44.41. P= .00). And history of falls in the elderly was significantly associated with falls. 4) There was significant association with age and medical diagnosis ($X^2$=140.66, P= .00), chief medical diagnosis were hypertension(34), diabetis mellitus(22), arthritis(11), stroke(8), fracture(7), pulmonary tuberculosis(6), dementia(5) and cataract(5), 5) There was significant association between age and intrinsic factors: cognitive impairment, mobility impairment, insomnia, emotional problems, urinary difficulty, visual impairments, hearing impairments, use of drugs (sedatives , antihypertensive drugs, diuretics, antidepressants) (P < 0.05). But there was no significant association between age and dizziness ($X^2$=2.87, P=.41). 6) 15.3% of total fallers were drunken state when they were fallen. 7) Environmental factors of fall accident were unusual posture (50.9%), slips(35.2%), trips (9.5%) and collision(4.4%). 8) Most of falls occurred during the day time, peak frequencies of falls occurred from 1pm to 6pm and 7am to 12am. 9) The places of fall accident were roads(22.6%), house-stairs 06.7%), rooms, floors, kitchen (11.2%), the roof-top, veranda, windows(10.9%), hospital(7.5%), ice or snowy ways(5.8%), bathroom(4.9%), playground, park(4.9%), subway-stairs(4.4%) and public-bathrooms (2.2%). 10) Activities at the time of fall accident were walking(37.6%), turning around or reaching for something(20.9%), going up or down stairs09.2%), exereise, working07.4%), up or down from a bed(2.7%), using wheelchair or walking aids, standing up or down from a chair(2.2%) and standing still(2.2%). 11) Anatomical locations of injuries by falls were head, face, neck(31.3%), lower extremities (29.9%). upper extremities(20.6%), spine, thorax, abdomen or pelvic contents(l1.4%) and unspecified(2.9%). 12) Types of injures were fracture(47.6%), bruises03.8%), laceration (13.3%), sprains(9.0%), headache(6.6%), abrasions(2.9%), intracranial hemorrage(2.4%) and burns(0.5%). 13) 41.5% of the fallers were hospitalized and average of hospitalization was 22.3 days. 14) The six fallers(1.46%) died from fall injuries. The two fallers died from intracranial hemorrage and the four fallers died of secondary infection; pneumonia(2), sepsis(1) and cell lulitis(1). It is suggested that 1) Further study is needed with larger sample size to identify the fall risk factors. 2) After the fall accident, comprehensive nursing care and regular physical exercise should be emphasized for the elderly person. 3) Safety education and safety facilities of the public place and home is necessary for fall prevention.

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A Study on the Level of ADL in Community Dwelling Elderly Registered in a Public Health Center (일개 시 보건소에 등록된 재가노인의 일상생활 동작수행 정도에 대한 조사연구)

  • Kim, Keum-Ja;Jang, Hyo-Soon;Yoon, Jin;Ko, Sun-Hwa;Lee, Eun-Hui
    • Research in Community and Public Health Nursing
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    • v.13 no.2
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    • pp.332-342
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    • 2002
  • Purpose: The purpose of this study was to assess the level of activities of daily living (ADL) in a group of community dwelling elderly. Methods: The subjects were 100 low-income elderly registered in a public health center. The data were analyzed using the SPSS/PC program. Results: The results were as follows: 1. The basic ADLs of the subjects were scored at 7 levels, and the mean score was 6.24 out of 7 points. The subjects did not necessarily require help from others, but might have needed more times or instrumental assists to perform ADLs. The lowest ADL score was reported on walking up to the stairs (5.05), for which the subjects did not need physical assistance, but needed a certain degree of supervision. The highest score was reported on self eating (6.74), followed by bowel management (6.60). 2. The mean IADL score of the subjects was 1.77 out of 4 points. indicating that the subjects were very independent in performing IADLs, without help from others. 3. In relation to general characteristics, the level of ADLs of the subjects was significantly different by age (F=6.65, P=.000), main activities (F=6.36, P=.001), perceived health status (P=4.66, P=.012), educational background (F=4.64, P=.03), marital status(F=4.62, P=.005), and major household income (F=4.15, P=.002). 4. The subjects' level of IADLs in relation to their general characteristics was significantly different by perceived health status (F=8.08, P=.001), major activities (F=7.33, P=.000), age (F=6.18, P=.000), family context (F=3.53, P=.018), religion (F=3.10, P=.019), marital status(F=2.62, P=.055), and major household income (F=2.31, P=.049).

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A Study on Physical, Cognitive, and Social Functioning Levels in Institutionalized elderly (요양원 노인의 신체적, 인지적, 사회적 기능상태에 관한 연구)

  • Kim, Jung-Soon;Kwon, Ja-Youn
    • Research in Community and Public Health Nursing
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    • v.7 no.2
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    • pp.216-228
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    • 1996
  • The purposes of this study were to investigate levels of physical, cognitive, and social functioning in institutionalized elderly. The subjects were 78 residents of a nursing home for the elderly in Pusan. The data were collected from June 24th to July 8th, 1996 using interview and observational method. The structured questionnaires developed by Kim, by Kwon & Park, and by researcher were adopted to measure physical, cognitive, and social function, respectively. The data were analyzed using percentages, means, t test, ANOVA, Pearson correlation coefficient, Cronbach's alpha with the SPSS PC programs. The results were summarized as follows: 1. 34.2% of the subjects had a paralysis, strokes 26.3%, hearing impairment 15.9%, vision impairment 11.8%, mental disturbance 11.8%, cognitive disturbance 10.5%. 2. The mean score on the physical function for the subjects was 73.14, and the items with low functioning levels were 'ascending the stairs', 'bathing' in that order. There was no significant difference in physical function according to the following demographic characteristics: sex, age, and education level. 3. 50.0% of subjects was categorized 'definite dementia', 'questionable dementia' 11.5%, 'definite non-dementia' 38.5%. There was a significant difference in cognitive function according to sex, but were no significant differences according to following demographic characteristics: age and education level. 4. The mean score on the social function for the subjects was 17.60. The items with comparatively high score were in simple activities such as 'enjoying talking with his friends', 'watching TV or listening to the radio', and the items with low score were in complex activities such as 'enjoying a hobby',. 'enjoying a game', 'reading the newspaper or book'. There were no significant differences in social function according to sex and age, but was a significant difference according to education level. 5. Social function was positively correlated with both physical function and cognitive function.

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Reliability and Validity of The Korean Version Scale of Impact of Weight on Quality of Life in $Kids^{(C)}$ (한국어 버전 청소년의 체중 관련 삶의 질 측정도구의 신뢰도와 타당도 검증)

  • Kim, Jeoung-Hyun;Chun, Sungsoo;Choi, Han-Sik
    • The Journal of Korean Society for School & Community Health Education
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    • v.15 no.3
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    • pp.105-125
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    • 2014
  • Background: The purpose of this study was to evaluate reliability and validity of a 27-item Korean Version of the Impact of Weight on Quality of Life in adolescents ($IWQOL-Kids^{(C)}$: Korean Version). Methods: This instrument was administered to 872 adolescents (mean z-BMI: 2.61, mean $age{\pm}SD$: $13.9{\pm}1.2$, male: 51.9%). Reliability was tested by internal consistency method and item analysis, validity test was performed by index of content validity, exploratory factor analysis, confirmatory factor analysis and concurrent validity. Sensitivity was tested by ANOVA and t-test. Analyses were performed using SPSS and Amos 18.0. Results: By an exploratory factor analysis, 4 factors were extracted; 'Body esteem' consisted of 9 items with 35.9% of variance (social life: 6 items, 10.23%, physical comfort: 6 items, 8.21%, family relations: 6 items, 7.0%). Four factors explained 61.34% of total variance. Internal consistency coefficients ranged from .766 to .929 for scales on 27 items and equal to .920 for total score for both the 26-item and 27-item tools. A confirmatory factor analysis was conducted for the convergent validity and discriminant validity. The standardized factor loadings to test the convergent validity showed more than .5(C.R<1.965) on all paths after deletion of item PC1 (avoid stairs). The average variances extracted were more than .50 and the construct reliabilities were more than .70. The average variances extracted were stronger than the squares of correlation coefficient of inter-latent variables. Conclusions: These results support that the $IWQOL-Kids^{(C)}$: Korean Version with a 26-item is a reliable and valid tool in Korean obese adolescents.

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