• 대한물리의학회지
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• 제8권1호
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• pp.1-9
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• 2013

PURPOSE: This study compared the effects of dual motor task training and simple task training on the balance of subacute stroke patients. METHODS: A total of 23 subacute stroke patients participated in the study. The subjects were allocated randomly to two groups: an experimental group and a control group. Both groups received conventional treatment for 50 minutes, 5 times per week for 6 weeks. In addition, the experimental group stacked blocks, moved catch cups, and moved rings while standing and gait. To evaluate the effects of the exercises, subjects were evaluated by using the balance system and the timed get up and go test(TUG) for balance measurement. The data was analyzed using a paired t-test and independent t-test to determine the statistical significance. RESULTS: The experimental group showed a significant decrease on the medial-lateral and anterior-posterior stability index compared to the control group (p<.05) for the simple task and a significant decrease on the medial-lateral and anterior-posterior stability index compared to the control group for the dual task. In addition, the experimental group showed a significant increase in TUG time compared to the control group (p<.05). CONCLUSION: These results support the perceived benefits of dual motor task training to augment the balance of subacute stroke patients. Therefore, dual motor task training is recommended for subacute stroke patients.

• 대한수사과학회지
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• 제2권1호
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• pp.52-80
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• 2007

In the rapidly changing current society, the Korean National Police(KNP) is facing a lot of demands from the citizens like the protection of subject/victim rights, independence of investigation authority, disclosure of actual truth, and prevention & eradication of crimes. It is widely recognized among the Korean people and the police that the KNP is always standing for the rights of the people and it is high time that the KNP should be restored as the pioneer for the protection of human right. In this situation, the tremendous emphasis is given on the importance of investment in investigative training through the long-term master-plan in order to renovate its constitution, to level up its quality, and to cope with the highly sophisticated crime patterns. Korean police have already shown its outstanding investigative skills of identification of the deceased throughout large cases like Daegu subway arson and tsunami in Southeast Asia. In addition, the skills of cyber crime investigation are highly recognized by foreign law enforcement agencies. However, the investigative skills and abilities are being degraded and the morale of the investigative personnel are falling due to the insufficiently of the finite training budget. Lack of financial support results in the lack of training program and poor training environment, which subsequently leads to the inefficiency of training. Additionally, no long-term budget for fostering specialized investigative agents is allotted. Considering the fact that more than 95% of crimes in Korea are being primarily investigated by the Korean police, we have to understand the importance of the police. By the tremendous investment in investigative training which can lead to the high-quality investigations, the Korean police can ultimately contribute to the protection of safety and life of its people.

• 대한물리의학회지
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• 제2권2호
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• pp.243-250
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• 2007

Purpose : Shoulder subluxation is a very common problem in patients with hemiplegia with stroke. Prevention of the low tone subluxed shoulder has been an issue for physical therapists working with neurological patients for many years. Methods : This study reviewed the literature to definite the management and a cause of shoulder subluxation with hemiplegia patients after stroke. Various modalities have been suggested for realigning the glenohumeral joint, but their use is controversial. The purpose of this paper is to review critically the evidence base in order to inform the clinical decision-making process for physiotherapists working in neurology. Results : Literature has identified supports, strapping and functional electrical stimulation(FES) in the management of low tone shoulders. Following review of this evidence it is suggested that there is a lack of reliable and valid research evidence on which to base conclusions. The modalities with the best supporting evidence for realigning the low tone subluxed glenohumeral joint are the triangular sling, Harris hemi sling and the Rolyan humeral cuff used in a standing position and the lap board and arm trough while the patient is sitting. However, due to soft tissue adaptation with associated lack of movement, over-correction and the need for careful patient positioning these supports need to be evaluated for each patient and should be used only in appropriate situations. Conclusion : Similarly, there is a lack of evidence on the effects of long-term use to this equipment. Electrical stimulation is also thought to have potential in the treatment to subluxed low tone shoulders but additional research is required to clarify the parameters for use and the long-term effects of these forms of management.

• 한국식생활문화학회지
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• 제27권3호
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• pp.261-273
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• 2012

To find an efficient solution for the globalization of Korean food in Brazil, we conducted a survey about the satisfaction of Brazilian natives who had visited a Korean restaurant, and possible suggestions for improvement. We also conducted indepth interviews with 13 owners of Korean restaurants in Seo Paulo, Brazil, about their plans to improve Korean food to be more appealing to the Brazilian palate. Our research shows that Korean restaurants had a below average reputation for employee kindness, menu taste and variety, interior, mood, and accessibility. As a result of the survey, we found that Korean restaurants were considered in general to be below average. The survey also showed that the higher the level of a person's economic standing, the less satisfaction they had with Korean food restaurants. We also found that the most common pieces of advice that Brazilian women had regarding Korean restaurants were to offer more variety in the menu, maintain a cleaner restaurant, and to actively engage in public relations. The general concerns of everyone surveyed focused on cleanliness and public relations of the restaurant. However, food-related people focused more on the taste and quality of the food. Sao Paulo is currently the most well-developed economic center in South America, so the world's food service industry is pushed to the front of its ongoing development. For Korean food to make inroads into Brazil, Korean restaurants need to change the niche that they occupy. First-generation family businesses and second-generation specialized family businesses coexist in that city. So first of all, to localize the Korean food for Brazilian tastes, a menu system that will easily allow natives to access Korean food must be established. And second of all, it must support the total food culture by improving distribution, sanitation management, and marketing methods that can get the natives to like Korean food ingredients.

• Safety and Health at Work
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• 제11권2호
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• pp.207-214
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• 2020

Background: Prolonged sitting at work can lead to adverse health outcomes. The health risk of office workers is an increasing concern for the society and industry, with prolonged sitting work becoming more prevalent. Objective: This study aimed to explore the variation in muscle activities during prolonged sitting work and found out when and how to take a break to mitigate the risk of muscle symptoms. Methods: A preliminary survey was conducted to find out the prevalence of muscle discomfort in sedentary work. Firstly, a 2-h sedentary computer work was designed based on the preliminary study to investigate the variation in muscle activities. Twenty-four participants took part in the electromyography (EMG) measurement study. The EMG variations in the trapezius muscle and latissimus dorsi were investigated. Then the intervention time was determined based on the EMG measurement study. Secondly, 48 participants were divided into six groups to compare the effectiveness of every break type (passive break, active break of changing their posture, and stand and stretch their body with 5 or 10 mins). Finally, data consisting of EMG amplitudes and spectra and subjective assessment of discomfort were analyzed. Results: In the EMG experiment, results from the joint analysis of the spectral and amplitude method showed muscle fatigue after about 40 mins of sedentary work. In the intervention experiment, the results showed that standing and stretching for 5 mins was the most effective break type, and this type of break could keep the muscles' state at a recovery level for about 30-45 mins. Conclusions: This study offers the possibility of being applied to office workers and provides preliminary data support and theoretical exploration for a follow-up early muscle fatigue detection system.

• 대한인간공학회지
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• 제30권5호
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• pp.659-669
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• 2011

Objective: The aim of this study is to suggest a package layout guideline for low-floor bus by interview with passengers and observations of their behavior. Background: Increasing attention has been introduced the low-floor bus to be more suitable for use by transportation handicapped. Complex issues are involved in providing comfortable services to all people. We are going to suggest package layout guidelines for more comfortable and suitable travel to all people. Method: The two times of survey and video observation sessions were conducted on low-floor buses in Seoul; (1) a finding of potential issues in the first session, (2) a confirming of issues from the last session. Results: The three of major issues were founded in this study; (1) difficulties in supporting body when standing, (2) difficulties in sitting on front wheel pan seat, (3) difficulties in passing through the aisle. Conclusion: There were clear differences between public and transportation handicapped in using some tools which are used for support body such as roof hand rails, side hand rails, and hand rail rings. Some of design problems were founded to improve from the perspective of ergonomics and universal design. Such differences and design guidelines have to be considered in bus design as well as commercial vehicle. Application: The proposed design guidelines can be used to development of low-floor bus and other public transportations.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2017년도 제48회 춘계학술대회논문집
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• pp.26-29
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• 2017

한국형발사체를 독자개발하기 위한 연구개발이 한국항공우주연구원을 중심으로 2010년 이후 수행 중에 있다. 발사대 장비 중 발사체고정장치는 발사체를 발사패드 위에 수직으로 기립시킨 후 발사체 하부를 고정하여 풍하중 등 외부 하중으로부터 발사체를 견고하게 고정하는 장치로, 발사체 1단 엔진 점화 후 발생된 추력이 발사체의 이륙중량을 초과되어 이륙이 시작하는 발사초기에 다른 지상장비들과 마찬가지로 발사체 이륙에 간섭이 되지 않도록 고정장치를 빠르게 해제 하여야 한다. 파이로밸브는 발사체고정장치를 구성하는 핵심 구성품의 하나로 발사체 단분리 장치 및 위성 분리장치 등에도 적용하는 유사기능부품으로 높은 신뢰도과 빠른 응답특성을 가져야 한다. 본 논문내용을 통해 발사체고정장치용 파이로밸브 개발과정과 한국형발사체에 대한 전반적인 이해의 폭을 넓히고자 한다.

• Physical Therapy Rehabilitation Science
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• 제6권1호
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• pp.26-32
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• 2017

Objective: The purpose of this study was to evaluate the relationship between quality of life (QoL) of the caregiver and disease severity with motor function in children with cerebral palsy (CP). Design: Cross-sectional study. Methods: Research data were collected in the Rehabilitation Clinic of Daegu University. The Gross Motor Function Measure (GMFM-88) and the functional independence measure (FIM) were used for assessment by three occupational therapists, and the 36-item short form health survey (SF-36) were applied to the caregivers. One hundred six caregivers of under 18 years who were diagnosed with CP completed a survey and interview. The caregivers' QoL was evaluated using Medical Outcomes Study SF-36. The children's motor function was scored using GMFM-88 in five dimensions: lying and rolling; sitting; crawling and kneeling; standing and walking, running and jumping and CP's FIM scores. Results: Out of the 8 domains of the Medical Outcomes Study SF-36, the "physical functioning", "physical role functioning", "mental health", and "bodily pain" domains were significantly correlated to "total" percentage scores of the GMFM-88 (p<0.05). In addition, the "mental health" domain was correlated to each subdomain of the GMFM-88, which includes, "lying and rolling", and "crawling and kneeling". Similarly, of Medical Outcomes Study SF-36, "physical functioning", "bodily pain", and "mental health" domains were significantly correlated with "transfer" and "locomotion" of FIM scores (p<0.05). Conclusions: This study showed that the QoL of the caregivers were well correlated with the motor function of children with CP. It is also important to support not only physical health but also psychological health of caregivers of children with CP, especially those with severe motor function.

• 한국IT서비스학회지
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• 제15권4호
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• pp.73-83
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• 2016

Pedestrian safety was recently highlighted with a yellow carpet, a yellow-colored pavement material prepared for children waiting for signals for pedestrian crossing, without validation of its efficiency in practice. It was a promising device likely to assist highway safety by stimulating pedestrian to step on the yellow-colored area; it was generally called nudge effects. This paper delivers a study conducted to check the effectiveness of yellow carpet in three different aspects in vehicle driver's perspective by applying the newly introduced information technology (IT) service: Visual Attention Software (VAS). It was assumed that VAS developed by 3M in the United States should be able explain the Korean drivers' visual reaction behaviors since technology embedded in VAS was developed based on and proved by other various international countries and continents in the world. A set of pictures was taken at thirteen different field sites in seven school zone areas in the Seoul metropolitan area before and after the installation of a yellow carpet, respectively. Sets of those pictures were analyzed with VAS, and the results were compared based on the selective safety measures: the likely focusing on standing pedestrians (waiting for a pedestrian's green signal time) affected by its background (yellow-colored pavement) contrasting him or her. The test results from a set of before-and-after comparison analyses showed that the placement of yellow carpet would (1) increase 71% of driver's visual attention on pedestrian crossing areas and (2) change the sequential order of visual attention on that area 2.4 steps ahead. The findings would enhance deployment of such promising efficiency and thus increase children safety in pedestrian crossing. The result was promising to highlight the way to support the changes in conservative traffic safety engineering field by applying the advanced IT services, while much robust research was recommended to overcome the limitation of simplification of this study.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제24권4호
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• pp.203-216
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• 2021

이 연구의 목적은 초등학교 수학교실에서 시행되는 경과시간 수업에서 학생들에게 제공되는 수학 학습기회를 탐색하는 것이다. 경과시간을 도입하는 데에 있어 후속 학년과의 수학적 연결성을 갖도록 경과시간을 양적으로 대상화하려는 교사들의 노력을 문서화하고자 하였다. 이를 위해 세 초등교사의 경과시간 도입 수업을 관찰하고 내러티브 분석을 시행하였다. 그 결과, 교사들은 도구를 사용하여 학생들이 경과시간을 양적으로 접근할 수 있도록 지원하고 있었으며, 같은 도구라도 서로 다른 양적 측면을 강조하였다. 아날로그 시계의 경우 한 교사는 시계바늘의 회전 바퀴 수로 양적 대상화를 시도한 반면, 다른 교사는 시계바늘이 아동한 거리로 경과시간의 양을 표상하였다. 시간띠의 길이 속성으로 경과시간의 양을 표상하는 경우도 있었다. 결과를 바탕으로 경과시간의 수업에서 다양하게 포착된 양적 대상화 사례들의 교수학적 의미를 논의하였다.