• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.04a
• /
• pp.829-830
• /
• 2017

스카이라인 질의는 '지배(dominate)'관계를 적용한 선호도 질의(preference query)의 한 종류로, 복수의 기준을 이용한 의사 결정 시 사용된다. 스카이라인 질의 결과는 다수의 선택지 중에서 사용자가 다른 객체에 비해 뒤처지지 않는 선택지를 제시함으로써 사용자가 검토해야하는 선택지의 수를 대폭 감소시키기 때문에 대용량 데이터 분석 시 매우 유용하게 활용될 수 있다. 본 논문에서는 기존에 제시된 BBS(Branch and Bound Skyline Computation)에서 사용되고 있는 평가함수를 설명하고, 스카이라인 계산을 위해 사용할 수 있는 대안 평가함수의 속성을 제시한다. 또한 다양한 대안 평가함수를 사용한 실험을 통해 성능을 분석했으며, 이를 통해 기존 기법의 성능보다 좋은 평가함수가 존재함을 보였다.

• Journal of the Korean Society of Physical Medicine
• /
• v.11 no.1
• /
• pp.45-52
• /
• 2016

PURPOSE: The purpose of this study was to determine the effects of balance training on balance pad and sand on balance and gait ability in stroke patients. METHODS: Sixty stroke patients were divided into a Balance Pad group(BPG, N = 20), a Sand group (SG, N = 20) and a Hard Ground group (HGG, N = 20) randomly. The subjects in the Hard Ground group stood in a comfortable position, faced a therapist, then threw a Swiss ball back and forth. They then performed balance training in which they raised and lowered their ankles while facing forward or moved objects from one table to another. The BPG performed same tasks in HGG, on an unstable surface using a balance pad. The SG performed same tasks on sand ground. All groups received training 30min per day, five times per week, for eight weeks. RESULTS: After intervention, all groups showed significant increases balance and gait components. And the BPG and the SG showed significant increase in weight distribution rate, Sway length and BBS compared with the HGG, but there was no significant difference in Cadence, Stride length among three groups. CONCLUSION: According to the results of this study, balance training on unstable surface using balance pad and sand was more effective in improving balance in stroke patients.

• Physical Therapy Korea
• /
• v.17 no.4
• /
• pp.55-60
• /
• 2010

Clinical measures that Quantify falling risk factors are needed for the accurate evaluation of patients and to plan an intervention strategy. The purpose of this study was to examine the test-retest and interrater reliability of the dynamic gait index (DGI) for persons with Parkinson's disease (PD). A total of 22 idiopathic PD patients were recruited from rehabilitation hospital, Korea in this study. The DGI was assessed in two sessions that were, three days apart. We also measured Berg balance test (BBT) and geriatric depression scale (GDS) for concurrent validity with DGI. Intrarater and interrater reliability (.96 and .98 respectively) for DGI were high. indicating good agreement. The DGI was showed a good positive correlation with the BBS (r=.852). but not GDS (r=-.462). Intrarater and interrater reliability of DGI were high in people with PD. The DGI could be a reliable measure to evaluate functional postural control during gait activities in the PD population, and the ability of DGI to detect real change is acceptable in research and clinical settings.

• Journal of the Korea Institute of Building Construction
• /
• v.12 no.3
• /
• pp.291-298
• /
• 2012

For cold weather concreting, frost damage at early age is generated in the concrete, and problems such as delaying of setting and hardening and lowering of strength manifestation emerge due to the low outside air temperature at the early stage of pouring, making the selection of an effective curing method critically important. Unfortunately, the tent sheet currently used as the curing film for heating insulation at work sites, not only has the problems of inferior permeability and extremely deteriorated airtightness, but a phenomenon of continuous fracturing is also generated along the direction of fabric of the material itself, presenting difficult circumstances for maintaining adequate curing temperature. The aim of this study was to develop an improved bubble sheet type curing film for heating insulation of cold weather concrete by combining mesh-tarpaulin, which has excellent tension properties, with bubble sheet, which offers superior insulation performance. The analysis showed that the improved curing film in which BBS1 is stacked to MT was a suitable replacement for curing films currently in use, as it has better permeability, tension property, and insulation performance than the T type film used at work sites today.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.10 no.5
• /
• pp.417-422
• /
• 2000

In this paper, an efficient fuzzy rule generation scheme for adaptive neuro-fuzzy system modeling using the Independent Component Analysis(ICA) as a preprocessing is proposed. Correlation between inputs was not considered in the conventional neuro- fuzzy modeling schemes, such that enormous number of rules and large amount of error were unavoidable. The correlation between inputs is weakened by employing ICA so that the number of rules and the amount of error are reduced. In simulation, the Box-Jenkins furnace data is used to verify the effectiveness of the proposed method.

• Journal of The Korean Association of Information Education
• /
• v.12 no.2
• /
• pp.131-139
• /
• 2008

Recently the wireless internet technologies have been widely used in education environments. The purpose of this paper is to design and implement mobile class management support system. The proposed system is based on the existing CSCL theory and modified in accordance with mobile environments. The proposed system has the following characteristics. First, various types of cooperation are possible in this system. In this system, students can participate actively through tools such as BBS. Second, wired and wireless web sites are linked systematically so that users can access via either site. Two sites are complementary each other. Third, parents are encouraged to participate in class activities. Some basic information such as curriculum and daily announcement is open for parents. The proposed system has been applied to elementary school students. Extensive survey shows that the proposed system has good effect on participation, interaction, and satisfaction in class management, respectively.

• Journal of Korean Medicine Rehabilitation
• /
• v.26 no.4
• /
• pp.107-115
• /
• 2016

The occurrence of brain stem stroke after lumbar selective nerve root block seem to be an uncommon event comparing it to after cervical selective nerve root block. We recently experienced a 60-year-old man who were diagnosed as left lateral medullary infarction (Wallenberg's syndrome) after lumbar selective nerve root block. He was treated by traditional Korean medicine with acupunture, Pulsed electromagetic therapy (PEMT), herb medicine. The range of motion of upper and lower extremity, manual muscle test, Korean version of Berg balance scale (K-BBS) and Korean version of Barthel index (K-MBI) were adopted to measure the resulting recovery after 4 weeks treatment. Traditional Korean medicine was effective for rehabilitation of patient. Further studies are needed to set up and Korean medical protocol for Wallenberg's syndrome.

• The Journal of Korean Physical Therapy
• /
• v.26 no.2
• /
• pp.104-109
• /
• 2014

Purpose: The purpose of this study was to understand the effect of aquatic exercise on balance and depression of stroke patients. Methods: For 12 participants with stroke, six members of the experimental group and six members of the control group were randomly selected and arranged. Proprioceptive Neuromuscular Facilitation (PNF) lower extremity aquatic pattern exercise was applied to the experimental group. On the other hand, participants in the control group performed PNF lower extremity pattern exercise on the ground. Both exercises were performed 30 minutes per day, five times per week, for a period of six weeks. Balance was assessed using the Berg Balance Scale (BBS) and Timed Up to Go test (TUG). Depression was measured using the Center for Epidemiologic Studies depression scale (CES-D). Results: As a result of comparison within groups, the experimental group showed significant difference for balance and depression after the experiment (p<0.05). In comparison between the two groups, the experimental group in which aquatic exercise was applied showed more significant change in balance and depression than the control group (p<0.05). Conclusion: According to the results of this study, aquatic exercise was proven to enhance the balance and decrease the depression of stroke patients.

• Journal of the Korean Society of Physical Medicine
• /
• v.13 no.1
• /
• pp.81-88
• /
• 2018

PURPOSE: The present study aims to determine the effect of lower extremity muscle strength exercise at the non-paralyzed side of patients of stroke using a mirror on gait and balance. METHODS: Subjects were assigned randomly to a group of lower extremity exercise without using a mirror (n=10), a group of lower extremity motion exercise using a mirror (n=10), and a group of lower extremity muscle strength exercise using a mirror (n=10). The exercise is added to a physiotherapy program conducted at the hospital and subjects conducted their designed lower extremity exercises 30 times a day (5 sets), five days per week for four weeks. RESULTS: The study result showed that BBS(Berg balance scale)(p<.05) and TUG(timed up and go test)(p<.05) had a significant difference. In the comparison on gait ability, stride length, step length, step width and single support was a significant difference within two groups using a mirror before and after the intervention(p<.05). CONCLUSION: Conclusively, low extremity motion exercise using a mirror and low extremity muscle strength exercise using a mirror conducted along with general physiotherapy exercises had a positive effect on functions of lower extremity in patients with stroke and the recovery of paralyzed side thereby incurring a significant difference in balance and gait abilities.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
• /
• v.18 no.2
• /
• pp.67-75
• /
• 2012

Background: Hemiplegic patients have the problems of the balance and weight shifting to the affected leg in walking. The aim of this study was to investigate the effect of unilateral stepping exercise combined with auditory feedback on balance and walking ability of the hemiplegic patients. Methods: Thirty hemiplegic patients were allocated in study group (n=15) or control group (n=15). General exercise and weight supporting exercise were conducted for the control group, and general exercises and unilateral stepping exercise combined with auditory feedback were conducted for the study group. Exercise were conducted three times a week for six weeks. Balance ability was measured by Berg Balance Scale (BBS), postural assessment scale for stroke (PASS), and performance-oriented mobility assessment (POMA). Walking ability was measured by time up and go test (TUG), 10m walk test (10mWT), and six minutes walk test (6MWT). Results: Balance and walking ability were significant increased in both group (p<.05). Balance and walking ability of the study group were more increased than that of the control group (p<.05). Conclusions: Unilateral stepping exercise combined with auditory feedback is more effective than weight supporting exercise to increase on balance and walking ability for the hemiplegic patients.