• Journal of Korean Physical Therapy Science
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• v.5 no.3
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• pp.691-696
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• 1998

Objectives : Asymmetrical weight bearing during standing has been identified as a common problem in persons with hemiplegia. This study examined the effect of auditory and visual feedback on symmetric weight bearing with hemiplegia. Method: The intervention program was instituted for 10 min each day with a total of twelve treatment sessions. The machine which was used for this study is the Weight Balancer, OG GIKEN, WB-202, Japan Result: There was a significant improvement of symmetric weight distribution in auditory feedback group whereas the visual feedback group disclosed some improvement but not significantly. There was no significant change in control group. Conclusion: Results of this study suggest that an auditary feedback group can be more effective than visual feedback group or control group in helping the persons with hemiplegia achieve symmetric stance.

• Magazine of the Korean Society of Agricultural Engineers
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• v.44 no.6
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• pp.71-82
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• 2002

The purpose of this study is to develop a 3 dimensional spatial planning model (3DSPLAM) for facilities allocation and visual evaluation in improvement planning of rural village. For the model development, this study developed both planning layers and a modelling process for spatial planning of rural villages. The 3DSPLAM generates road networks and village facilities location automatically from built area plan map and digital elevation model generated by geographic information system. The model also simulates 3-dimensional villagescape for visual presentation of the planned results. The 3DSPLAM could be conveniently used for automatic allocation of roads, easy partition of land lots and reasonable locating of facilities. The planned results could be also presented in the stereoscopic models with varied viewing positions and angles.

• Journal of Institute of Control, Robotics and Systems
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• v.17 no.4
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• pp.375-381
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• 2011

This paper deals with the improvement of visual path following through velocity variation according to the coordinate of feature points. Visual path follow first teaches driving path by selecting milestone images then follows the route by comparing the milestone image and current image. We follow the visual path following algorithm of Chen and Birchfield [8]. In [8], they use fixed translational and rotational velocity. We propose an algorithm that uses different translational velocity according to the driving condition. Translational velocity is adjusted according to the variation of the coordinate of feature points on image. Experimental results including diverse indoor cases show the feasibility of the proposed algorithm.

• PNF and Movement
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• v.15 no.2
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• pp.201-208
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• 2017

Purpose: The purpose of this study is to determine the effects of visual biofeedback training on the recovery of balance function in stroke patients. Methods: A total of 30 patients with stroke were chosen as the subjects of this study. The subjects were randomly divided into either the visual biofeedback balance training group (experimental group; n=15) or the general balance training group (control group; n=15). The visual biofeedback balance training and general balance training were implemented for 30 minutes a day, three times a week, for a total of four weeks. The subjects' balance ability was measured before and after the interventions. Results: The shift length and surface area of the center of the body decreased in both the experimental group and the control group, with the difference being statistically significant. The shift length and surface area of the center of the body both decreased more in the experimental group than in the control group, and there was a statistically significant between-group difference. Conclusion: The experimental group showed a greater improvement in terms of the balance ability of patients with stroke than the control group. Therefore, we believe that visual biofeedback balance training can be effectively applied for the improvement of balance ability in patients with stroke.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.10 no.1
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• pp.340-348
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• 1997

The glaucoma, cataract and causing-blindness-diseases have high clinical importance by their severity of the symptoms and possibility of causing visual loss. Glaucoma is caused by an increase in the intraocular pressure, if severe enough, can cause field loss and eventually complete blindness. In cataract, the general clarity of vision is impaired due to a loss of transparency of the chrystalline lens of the eye. The causing-blindness-diseases can be divided to PokMaeng which cause sudden blindness and ChungMaeng, in which visual acuity is losed gradually. In glaucoma, cataract and causing-blindness-diseases, the visual acuity is affected and the patient may complain blurriness, fatigue of eye, visual field loss deficiency or scintillant feeling, vitreous floaters. In this study, 32 patients who have cataract, glaucoma or other causing-blindness-diseases was treated with oriental medicine or acupuncture from July, l996 to May. 1997, and was followed up by their symptoms and visual acuity. 1. In glaucoma patients, intraocular pressure decreased significantry and the symptoms improved positively. 2. In cataract patients, there was no improvement of visual acuity but $40\%$ of patients found their symptoms improved. 3. In causing-blindness-diseases, $57\%$ of patients reported improvement of their symptoms such as blurriness or fatigue of eye. 4. Through oriental medical treatment, the symptoms of glaucoma, cataract and causing-blindness-diseases can be treated effectively. Therefore oriental management seems to be possible to cure glaucoma, cataract and causing-blindness-diseases.

• Structural Engineering and Mechanics
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• v.27 no.1
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• pp.77-97
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• 2007

When assessing buildings that may collapse during a large earthquake, conventional rapid visual screening procedures generally provide good results when identifying buildings for further investigation. Unfortunately, their accuracy at identify buildings at risk is not so good. In addition, there appears to be little room for improvement. This paper investigates an alternative screening procedure based on fuzzy logic and artificial neural networks. Two databases of buildings damaged during the Athens earthquake of 1999 are used for training purposes. Extremely good results are obtained from one database and not so good results are obtained from the second database. This finding illustrates the importance of specifically collecting data tailored to the requirements of the fuzzy logic based rapid visual screening procedure. In general, results demonstrate that the trained fuzzy logic based rapid visual screening procedure represents a marked improvement when identifying buildings at risk. In particular, when smaller percentages of the buildings with high damage scores are extracted for further investigation, the proposed fuzzy screening procedure becomes more efficient. This paper shows that the proposed procedure has a significant optimisation potential, is worth pursuing and, to this end, a strategy that outlines the future development of the fuzzy logic based rapid visual screening procedure is proposed.

• Journal of the Korean Society of Physical Medicine
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• v.13 no.4
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• pp.75-84
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• 2018

PURPOSE: This study was conducted to determine the effects of whole-body tilt exercise with visual feedback on trunk control, strength, and balance in patients with acute stroke. METHODS: The study included 18 patients with acute stroke who were randomly allocated to a Whole Body Tilt Exercise Group (WBTEG, N=9) and a General Trunk Exercise Group (GTEG, N=9). The WBTEG conducted whole-body tilt exercises with visual feedback, and the GTEG performed general trunk exercises. Both groups performed the exercises five times a week for 4 weeks. Outcomes were assessed using the trunk impairment scale (TIS), the trunk flexor and extensor strength test, the static balance test, and the Brunel Balance Assessment. RESULTS: After 4 weeks of intervention, both groups showed significantly improved TIS scores, muscle strength, and balance components (p<.05 in both groups). However, the improvement in TIS, muscle strength, and static balance in the WBTEG was significantly better than that in the GTEG (p<.05). CONCLUSION: Although both groups in this study showed post-intervention improvement, patients from the WBTEG who received visual feedback demonstrated more improvement. These findings indicate that whole-body tilt exercise with visual feedback may be effective at improving trunk control, trunk muscle strength, and balance in patients with acute stroke. Further studies are needed to gain a better understanding of the effectiveness of whole-body tilt exercise in patients with acute stroke.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.9 no.2
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• pp.21-33
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• 2014

Objectives : This study was to report the improvement of the patient with multiple sclerosis treated by Korean Medical treatment. Methods : The patient diagnosed as multiple sclerosis treated by acupuncture, bee venom pharmacupuncture, chuna manual therapy, and herbal medicine. To evaluate the effects of korean medicine, we used manual muscle test(MMT), the standard for assessment of the effect of stroke treatment, functional system(FS), visual analog scale(VAS). Results : 1. The patient's pain and optic dysfunction were reduced by the above therapy. 2. There was no change in manual muscle test(MMT), but there was mild improvement in finger joints function in the standard for assessment of the effect of stroke treatment. 3. In functional system(FS) scale, there was enhancement in optic function within a range. And there was improvement in expanded disability statue scale(EDSS) from 4.0 to 3.0. 4. In visual analog scale(VAS), there was considerable improvement from 9 to 6. Conclusions : The korean medical treatment was reduced pain and optic dysfunction.

• Journal of the Semiconductor & Display Technology
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• v.13 no.3
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• pp.1-6
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• 2014

Visual defect inspection for electronics parts manufacturing processes is comprised of 2 steps - automatic visual inspection by machine and inspection by human inspectors. It is necessary that spatial points which were detected by the machine should be adequately clustered for subsequent human inspection. This research deals with the spatial clustering algorithm for the purpose of process productivity improvement. Distribution based clustering is newly developed and experimentally confirmed to show better clustering efficiency than existing algorithm - area based clustering.

• Journal of Korean Neurosurgical Society
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• v.39 no.3
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• pp.171-175
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• 2006

Objective : In the present study, we evaluate visual outcomes after surgical removal of craniopharyngiomas and analyze the factors that are considered to affect visual outcomes. Methods : This study includes 30 patients with craniopharyngioma, who underwent surgery in this clinic during the last 10 years. The changes of visual function [visual acuity and field] of the patients were assessed preoperatively and postoperatively, and paired data of this change were compared. Also, the factors that influence on this change were analysed. Results : Among the 21 patients complaining of decreased vision before the operation, 8 patients were improved [38.0%], and 7 patients were worse [33.3%]. However, Four out of 9 patients without any preoperative visual symptoms developed worse vision after the operation [44.4%]. The average duration of symptom was 17.2 months in the improved group and 23.6 months in the aggravated group. The tumors recurred in only 5 patients after the gross total resection : Four of them showed the aggravation of visual function after surgical removal and 1 had improvement. Conclusion : After removal of craniopharyngiomas, the overall rate of vision improvement, no change and aggravation are 26.6%, 36.7% and 36.7%, respectively. Aggravation of postoperative visual function is higher in males, children and patients with a longer duration of symptom and the tumor recurres more frequently in patients who complained of worsened vision after surgical removal.