• Journal of Oral Medicine and Pain
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• v.22 no.2
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• pp.295-307
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• 1997

This study was performed to investigate the reproductibility of eccentric mandibular movements according to preferred chewing side, range of mouth opening, type of lateral guidance and involvement of temporomandibular disorders. 50 patients with temporomandibular disorders and 65 dental students without any signs and symptoms were randomly selected for this study as the patients group and the control group, respectively. For recording and observation of eccentric mandibular movement trajectory, BioEGN$^\textregistered$ of Biopak$^\textregistered$ system (Bioresearch Inc., USA) was used. Each eccentric movement to anterior, right and left side was performed three times similar to the movement pattern for Pantronic Reproducibility Index. mandibular path was analyzed by three dimensional positional change and the three paths from one direction were compared with one another. From this, reproducibility index of one-directional lateral movement could be calculated, and total reproducibility index, named BioEGN reproducibility index(BERI), was also computed from three-directional eccentric movement likewise. BioEGN reproducibility Index could have four value of score by small or large scale, and by outgoing or incoming movement. The data were analyzed by SAS/stat program and the results obtained were as follows: 1. Right side chewing subjects showed more consistent pattern In reproducibility index in comparison between patients group and control group than left chewing subjects have done, and reproducibility was low in patients group. However, there was no difference between the two stoups in bilateral chewing subjects. 2. There were no difference in reproducibility index between preferred chewing side and contralateral side in unilateral chewing subjects whereas reproducibility index in left side on outgoing movement were higher than in right side in bilateral chewing subjects. 3. Difference in total reproducibility index(BERI) between canine guidance group and non-canine guidance group were not observed though difference in reproducibility index on lateral movement were observed in part. 4. There were no difference in reproducibility index between affected side and contralateral side in unilaterally affected patients, and between unilaterally affected patients and bilaterally affected patients in patients group. 5. Highly significant positive correlationship were shown among the four 쇼pes of total reproducibility index(BERI) in total subjects, and range of clinical mouth opening was negatively correlated with BEBI on outgoing movements and with index on outgoing movement to preferred side.

• Korean Journal of Cleft Lip And Palate
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• v.8 no.1
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• pp.11-22
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• 2005

There ate anteroposterior$\cdot$vertical maxillary underdevelopment, transverse maxillary deficiency and wide cleft alveolus$\cdot$oroanual fistula among cleft lip ant palate related maxillary deformities. For treatment of these deformities, ones have used conventional treatment methods, there were often unsatisfactory results to patients and operators both. Since llizarov introduced effective technique of bone lengthening and augmentation for a variety of limb defotmities, application of distraction osteogenesis on maxillofacial area has been used to solve those disadvantages of conventional methods. Authors introduced following three cases about use of distraction osteogenesis. The first case is the application of RED(rigid external distraction) II system for the treatment of the anteroposterior$\cdot$vertical maxillary hypoplasia after several times of surgery and end of development in bilateral cleft lip and palate patient. The second case is the application of the USPD(unilateral segmental palatal distraction) for the resolution of the unilateral posterior crossbite and transverse dental arch asymmetry after alveolorraphy in growing unilateral cleft lip and palate patient. The third case is the application of transport distraction osteogenesis far closure of the wide clef alveolus and oroantral fistula in growing bilateral cleft lip and palate patient. There were satisfactory results in these cases. Particularly, in comparison with the decreases of relapse rates, the reduction of the hospitalization time and post-operative discomfort owing to minimal surgical intervention.

• The Journal of the Acoustical Society of Korea
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• v.38 no.1
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• pp.128-138
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• 2019

In this paper, we present fusion methods for two different lofargrams. Since the conventional method synthesizes the lofargrams using frequency spectrum, it has limited performance in fusion of tonal signals which have two-dimensional information of the time-frequency domain. Proposed algorithm uses a two-dimensional directional bilateral filter for preprocessing and fuses two lofargrams based on comparison of local anisotropy of the lofargrams. After noise is suppressed and tonals are sharpened, the local anisotropy can be used as a criterion to divide tonals and noise. The experiment results using simulated data and real data showed that the proposed algorithms result in similar or lower noise level of the fused lofargram than conventional algorithms and decrease tonal omission in fusion process.

• Physical Therapy Rehabilitation Science
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• v.11 no.2
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• pp.245-252
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• 2022

Objective: This study aimed to investigate the abdominal muscle activity difference while performing the abdominal bracing technique focusing on inspiration (abdominal bracing group), the general abdominal bracing technique (general bracing group), and the abdominal hollowing technique (abdominal hallowing group) Design: A cross-sectional study design. Methods: Thirty-three healthy participants were recruited for this study. The participants were allocated to 3 different groups; Abdominal bracing group, general bracing group, and abdominal hallowing group. The surface electromyography was placed over the rectus abdominis, external oblique, and internal oblique muscles to collect the activation of abdominal muscles during the trial. Results: The muscle activity of the abdominal bracing group and general bracing groups was significantly higher in all abdominal muscles than in the abdominal hollowing group (p<0.05) Both rectus abdominis and external oblique muscles showed higher muscle activations in the abdominal bracing group over the general bracing group (p<0.05). However, the ratio of bilateral external obliques and rectus abdominis to bilateral internal obliques was highest when the hollowing technique was applied (p<0.05). Conclusions: The results of study showed the abdominal bracing technique that emphasized inhalation rather than the abdominal hollowing technique or general abdominal bracing technique increased the activity of the abdominal muscles. Therefore, this study is considered to be a data for effective training if the abdominal bracing technique that emphasizes inhalation is applied as a method to increase the activation of the abdominal muscles.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.43
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• pp.481-507
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• 2009

Along with continuous increase in international investments encouraged by wide spread bilateral investment treaties (BIT) including free trade agreements (FTA), international investment disputes have been also increasing. This means that a host State, an importer of foreign investments, and a investor who exports its investment to foreign State, need to take measures to prevent international disputes arising from international investment or to prepare for the arbitration for resolving the disputes. Under these circumstances, this paper compares ICSID arbitration rules and UNCITRAL arbitration rules in respect of (i) the institution of arbitration, (ii) the appointment of arbitrators and the composition of arbitral tribunal, and (iii) the procedures for, and the form of, arbitral awards. On base of this comparison, this paper further suggests certain practical issues that the host State's government and the foreign investors should be aware of in order to be ready for the resolutions of disputes by ICSID or UNCITRAL arbitrations.

• Journal of Korea Multimedia Society
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• v.19 no.7
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• pp.1116-1126
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• 2016

Image segmentation is widely used in the pre-processing stage of image analysis and, therefore, the accuracy of image segmentation is important for performance of an image-based analysis system. An efficient image segmentation method is proposed, including a filtering process for super-pixels, improved saliency map information, and a merge process. The proposed algorithm removes areas that are not equal or of small size based on comparison of the area of smoothed superpixels in order to maintain generation of a similar size super pixel area. In addition, application of a bilateral filter to an existing saliency map that represents human visual attention allows improvement of separation between objects and background. Finally, a segmented result is obtained based on the suggested merging process without any prior knowledge or information. Performance of the proposed algorithm is verified experimentally.

• Journal of Korean Physical Therapy Science
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• v.5 no.4
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• pp.809-816
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• 1998

This study was conducted to evaluated the effects adding continuous passive motion(CPM) each day to the entire postoperative program of patients who received a total knee replacement(TKR). A retrospective chart review was completed for 31 patients(12 with bilateral involvement, totaling 44 knees)who received a TKR between 1996 and 1998. The data analysis compared the following variables for 28 patients who received CPM and 16 patients who received no CPM: the length of hospital stay(LOS), the frequency of postoperative complications, the number of post-operative days(PODs) range of motion (ROM). The CPM Group showed significant decreases in the frequency of complication(p<0.05), the LOS(p < 0.05), and No difference was demonstrated in the ROM of the two groups. We concluded that CPM was an effective adjunct to physical therapy care of patients undergoing total knee replacement.

• Journal of Korean Neurosurgical Society
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• v.47 no.2
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• pp.155-157
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• 2010

Anterior cranial fossa dural arteriovenous fistulae (DAVFs) are very rare and the bleeding rate is very high, especially in the presence of leptomeningeal draining vein and aneurysmal varix formation. A 85-year-old male patient presented with subdural hematoma (SDH). Magnetic resonance image (MRI) and transfemoral carotid angiography (TFCA) disclosed DAVF at the anterior cranial fossa with bilateral arterial feeders and leptomeningeal draining vein with varix formation. The lesion was treated by simple ligation of pial connecting vein using low frontal craniotomy. In comparison with DAVFs of the other sites, the anterior cranial fossa DAVF is difficult to manage by endovascular treatment due to not only the difficulty of transvenous access but the risk of visual impairment when using transarterial route. Surgical ligation of pial connecting vein is feasible and effective treatment.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.28 no.4
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• pp.130-141
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• 2015

Objectives : The aim of this study is to report the effect of Korean medicine treatment on ocular motility disorders (ptosis, bilateral upward gaze palsy, adduction impairment, and strabismus) caused by thalamus, midbrain and pontine infarctions.Methods : The patient was treated by using acupuncture, hominis placenta pharmacoacupuncture, and electroacupuncture treatment. The change of ptosis was evaluated by measurement of palpebral fissure width. The change of gaze palsy and strabismus were evaluated by comparison the photographs of the extraocular movements of patient. Strabismus also was evaluated by corneal reflex test.Results : Gaze palsy and strabismus were improved. Ptosis disappeared after Korean medicine treatment.Conclusions : Korean medicine treatment should be effective for the ocular motility disorders caused by thalamus, midbrain and pontine infarctions.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.67 no.12
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• pp.1678-1684
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• 2018

Dental caries is one of the most popular oral disease. The aim of automatic dental cavity detection system is helping dentist to make accurate diagnosis. It is very important to separate cavity from the teeth in the detection system. In this paper, We compared two active contour algorithms, Snake and DRLSE(Distance Regularized Level Set Evolution). To improve performance, image is selected ROI(region of interest), then applied bilateral filter, Canny edge. In order to evaluate the algorithms, we applied to 7 tooth phantoms from incisor to molar. Each teeth contains two cavities of different shape. As a result, Snake is faster than DRLSE, but Snake has limitation to compute topology of objects. DRLSE is slower but those of performance is better.