• Journal of Chest Surgery
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• v.41 no.6
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• pp.772-776
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• 2008

The indications and applications of arthroscopic surgery for the knee joint have increased with the development in surgical techniques and the improvement of arthroscopic equipment. The use of arthroscopic surgery has led to a significant decrease in morbidity for the patient with intra-articular abnormalities, in terms of both the diagnosis and the surgical treatments. Even though arthroscopy is a minimally invasive technique with relatively low morbidity, it is not without risk of complications, of which neurovascular complications are among the most serious and devastating. Here we report on 2 cases of popliteal artery injury during arthroscopic knee surgery and its specific diagnosis and treatment.

• Journal of Acupuncture Research
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• v.33 no.1
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• pp.95-101
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• 2016

Objectives : The aim of this report was to investigate the effects of Korean medical treatment on facial nerve paralysis with sensorineural hearing loss and tinnitus caused by traumatic temporal bone fracture. Methods : We treated a patient with acupuncture, herbal medicine and physiotherapy. The effect of these treatments was evaluated by House-Brackmann facial grading scale, Yanagihara's unweighted grading system and by Digital Infrared Thermographic Image. Results : After 21 days of Korean medical treatment, House-Brackmann facial grading scale changed from III to II and Yanagihara's unweighted grading score increased from 14 to 27. Digital Infrared Thermographic Image also improved. Conclusions : These results suggest that Korean medical treatments were effective in treating facial nerve paralysis with sensorineural hearing loss and tinnitus caused by traumatic temporal bone fracture. We hope that a more efficient application of this treatment will be the result of clinical data accumulated in future studies.

• Journal of Life Science
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• v.19 no.10
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• pp.1489-1494
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• 2009

This study was designed to investigate the effects of swimming and minocycline on motor function recovery and Bcl-2 expression after spinal cord injury (SCI) in rats. After operation, neurological motor behavior test (BBB scale) on days 1, 4, 7, 10, and 14 were tested. Western blot and immunohistochemical assessment (Bcl-2) were performed on day 14. BBB scale started to show a statistically significant difference on day 7 (p<0.05). On day 14, it showed the most significant (p<0.05) difference. Expression of Bcl-2 increased in all the experimental groups. In particular, the highest expression of Bcl-2 appeared in the swimming and minocycline groups. Based on these results, minocycline and swimming were the most effective factors in the motor behavior function and immunohistochemical assessment of SCI rats.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.13 no.2
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• pp.167-176
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• 1991

This is three case-reports of pleomorphic adenomas arising from one parotid gland and two minor salivary glands treated by total parotidectomy and complete enucleation. We conclude as follows : 1. During the parotidectomy, we tried to preserve the facial nerve by retrograde approach to the trunk from the mandibular branch where it passes over the posterior facial vein. Although the paresis of the lower lip following the operation was seen, it disappeared in about 3 months. 2. Microscopically, the tumor of the first patient (case 1) contained equally myxoid and cellular components and showed well encapsulation. 3. In the second patient (case 2), the tumor revealed large areas of hemorrhage, cystic change, dystrophic calcification and stromal hyalinization, but no definite evidence of carcinoma, therefore we labeled this tumer as "atypical mixed tumor". 4. In the third patient (case 3), the tumor showed principally myxoid component and incomplete capsule, but the tumor was well demarcated.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.3C
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• pp.262-270
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• 2008

We propose a technique to protect digital images using the magnitude and orientation of their edges. The proposed technique uses the content-associated copyright message generated by combining the original copyright message with the magnitude and orientation of some edges of a digital image. It enables the distribution of the original copyright message without any distortion of original digital images by avoiding embedment of the original copyright message into images. In addition to the advantage in the image quality, it also has a relatively low computational complexity by using simple operations to generate the content-associated copyright message. To verify the proposed technique, we performed experiments on its robustness to the external attacks such as histogram equalization, median filtering, rotation, and cropping. Experimental results on restoring the copyright message from images distorted by attacks show that more than 90%, on the average, can be recovered.

• Journal of Korean Society of Steel Construction
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• v.9 no.3 s.32
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• pp.377-390
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• 1997

The objective of this study is to investigate the structural behavior of concrete-filled steel tubular column to H-beam connections with reinforced bar. As a preliminary test, simple tensile test on the column to H-beam connections stiffened were conducted. The parameters of tensile test are the diameters of each rebars. The simple tensile test were conducted to 5 kinds of specimens. Estimating the load. displacement and strain for specimens, the result of tensile test were compared with the results of main test. On the basis of simple tensile test, tests are conducted to montonic and cyclic loading column to H-beam connections with the same diameters of rebars. Specimens of 5 are made for monotonic and cyclic loading test. In analysis, estimating the yielding strength and maximum strength of specimens on the basis of yield line theory, strength formula of beam-to column connections with concrete-filled steel tubular column was suggested.

• Journal of Korea Multimedia Society
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• v.6 no.5
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• pp.788-796
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• 2003

This paper proposes using dynamic momentum for squential learning method. Using The dynamic momentum improves convergence speed and performance by the variable momentum, also can identify it in the RMSE(root mean squared error). The proposed method is reflected using variable momentum according to current state. While static momentum is equally influenced on the whole, dynamic momentum algorithm can control the convergence rate and performance. According to the variable change of momentum by training. Unlike former classification and regression problems, this paper confirms both performance and regression rate of the dynamic momentum. Using RMSE(root mean square error ), which is one of the regression methods. The proposed dynamic momentum has been applied to the kernel adatron and kernel relaxation as the new sequential learning method of support vector machine presented recently. In order to show the efficiency of the proposed algorithm, SONAR data, the neural network classifier standard evaluation data, are used. The simulation result using the dynamic momentum has a better convergence rate, performance and RMSE than those using the static moment, respectively.

• The Journal of the Convergence on Culture Technology
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• v.2 no.1
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• pp.93-98
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• 2016

As information technologies are rapidly developed recently, social networking services through a variety of mobile devices and smart screen is becoming popular. SNS is a social networking based services which is online forms from existed offline. SNS can also be used differently which is confused with the online community. A modelling algorithm is a variety of techniques, which are assocoation, clustering, neural networks, and decision trees, etc. By utilizing this technique, it is necessary to study to effectively using the large number of materials. In this paper, we evaluate in particular the performance of the algorithm based on the results of the clustering using Facebook Insights data for the EM algorithm to be evaluated as a good performance in clustering. Through this analysis it was based on the results of the application of the experimental data of the change and the South Australian state library according to the performance of the EM algorithm.

• Journal of Biomedical Engineering Research
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• v.36 no.4
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• pp.95-102
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• 2015

Epilepsy is a chronic neurological disease which produces repeated seizures. Over 30% of epileptic patients cannot be treated with anti-epileptic drugs, and surgical resection may cause loss of brain functions. Seizure suppression by electrical stimulation is currently being investigated as a new treatment method as clinical evidence has shown that electrical stimulation to brain could suppress seizure activity. In this paper, design of a real-time closed-loop neurostimulation system for epileptic seizure suppression is presented. The system records neural signals, detects seizures and delivers electrical stimulation. The system consists of a 6-channel electrode, front-end amplifiers, a data acquisition board by National Instruments, and a neurostimulator and Generic Osorio-Frei algorithm was applied for seizure detection. The algorithm was verified through simulation using electroencephalogram data, and the operation of whole system was verified through simulation and in- vivo test.

• Korean Journal of Veterinary Research
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• v.52 no.3
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• pp.199-203
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• 2012

Neurofascin, one of the members of L1CAM, has been known to have some important roles during the development of nerve fibers. In order to investigate the role of neurofascin associated with the development of nerve fibers in the rat sciatic nerve, the initial development of NF155 in the paranode was studied with immuno-fluorescence and immuno-electron microscopy. The result of the present study showed NF155 was not detected in the fetal sciatic nerve and began to reveal at the postnatal day 0 (P0) and dramatically increased by time lapse until postnatal day 7 (P7). NF155 was prominently localized in the axolemma of paranode and not detected in the central region of node of Ranvier. According to the present study, NF155 is likely to have some relationships with the formation of paranode and myelin sheath.