• The Journal of Korean Medicine
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• v.40 no.3
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• pp.177-187
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• 2019

Objectives: The aim of this study was to report the clinical improvement of a patient who underwent arthroscopic Bankart repair using a rehabilitation protocol involving Korean medicine. Methods: The patient was treated with acupuncture, cupping, Korean Medicine, Chuna therapy, and Doin exercise therapy during the admission period. To estimate the patient's status, we used the Numeric Rating Scale (NRS), Pain Disability Index (PDI), assessments of the range of motion (ROM) and Muscle Manual Test (MMT) for the shoulder joint. Results: After administering the abovementioned treatments, we found that the patient's NRS, PDI, and ROM and MMT for the shoulder joint were improved. Conclusions: The rehabilitation protocol involving Korean medicine can be applied to and produce good results for patients who undergo arthroscopic repair for Bankart lesions. The limitation of the study was that the number of cases we studied was insufficient to prove the effectiveness. Hence, further studies are needed for designing the rehabilitation protocol involving Korean medicine.

• Journal of Broadcast Engineering
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• v.22 no.6
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• pp.744-754
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• 2017

This paper compares transport overhead of MPEG-2 TS, MMT and ROUTE in order to compare transport efficiency between the DTV and UHDTV. The MPEG-2 TS standard, widely used, was established for multiplexing and synchronizing encoded audio and video, additional information. In recent years, MMT and ROUTE was established as a next generation multimedia transport standard for the new broadcasting communication environment. In this paper, we compare and analyze transport overhead about three protocol. In order to analysis, we captured the UHD A/V stream in real-time broadcasting service using ROUTE and MMT, and we calculated and analyzed transport overhead using the overhead analysis program which was developed in our laboratory. Furthermore, for comparison under the same conditions, we assumed the MPEG-2 TS stream by extracting ES of UHD A/V stream based on the DTV standard. In this paper, we show the results of protocol transport efficiency in case of basic A/V stream except for additional services. And result show that MMT and ROUTE have similar overhead and MPEG-2 TS is relatively small overhead. However, since MPEG-2 TS result does not consider null packets, it is expected that the relative overhead difference will be reduced.

• Journal of Broadcast Engineering
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• v.20 no.1
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• pp.40-47
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• 2015

This paper discusses QoS enhancement in the Best-effort services of the service plan provided by MPEG Media Transport (MMT) systems for video streaming applications. Among MMT services, i.e. per-flow, per-class, and best-effort services, the server does not provide guaranteed bandwidth for the best-effort service only. Therefore, in the best-effort services, a bandwidth access priority is defined for various services, where the lowest priority is assigned to the low-level video services. To alleviate the issue of bandwidth limitation in the best-effort services, this paper investigates transmission of low-resolution video with low bitrate and up-sampling. Our experimental results prove the superiority of the proposed method in terms of delivered video quality.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.184-185
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• 2017

최근 기술의 발전으로 자연스러운 미디어와 실재감을 제공하는 차세대 3D 기술이 많은 관심을 받고 있다. MMT는 MPEG에서 표준화를 진행하고 있는 차세대 미디어 전송 규격으로 방송망(Broadcast Network)과 인터넷을 동시에 서비스할 수 있는 하이브리드 방송에 적합한 기능을 제공한다. 본 논문에서는 8K(7,680 x 4,320)의 해상도를 가지는 영상을 다채널(4개의 채널) 영상으로 분리하고, 각각의 분리된 영상을 MPEG MMT 프로토콜을 이용해서 서버에서 4개의 채널로 전송, 4개의 클라이언트에서 미디어를 수신하고, 동기화 알고리즘을 이용하여 동기를 맞춘 후 최소의 지연시간 이내에 4채널의 미디어를 재현할 수 있는 기술을 설계하고 구현하였다.

• Journal of Broadcast Engineering
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• v.24 no.6
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• pp.948-955
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• 2019

As interests in 360-degree VR (Virtual Reality) video services enormously grow, compression and streaming technologies for VR video data have been rapidly developed. Quality Emphasized Region (QER) based streaming scheme has been developed as a kind of viewport-adaptive 360-degree video streaming technology for maintaining immersive experience and reducing bandwidth waste. For selecting a QER corresponding to the user's gaze coordinate, QER-based streaming scheme requires the calculation of Quality Emphasis Center (QEC) distance and signaling message delivery for requesting QER switching. QEC distance calculations require high computational complexity because of repeated calculations as many times as the number of QERs. Furthermore, the signaling message interval results in a trade-off relationship between efficient bandwidth usage and flexible QER switching. In this paper, we propose an improved QER selection algorithm based on MMT protocol to solve this problem. The proposed algorithm could achieve computational complexity reduction by using preprocessed QER_ID_MAP. Also, flexible QER switching could be achieved, as well as efficient bandwidth utilization by an adaptive adjustment of the signaling interval.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.10 no.2
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• pp.37-49
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• 2015

Objectives : The purpose of this study is to show the effectiveness of Chuna Cranio-Sacral Therapy for remaining pain and muscle strength decrease after herniated intervertebral disc surgery. Methods : Two patients with Failed Back Surgery Syndrome(FBSS) were hospitalized and treated by Korean medical treatments with Chuna Cranio-Sacral Therapy. The Range of Motion(ROM) of the lumbar spine and Manual Muscle Test(MMT) were adopted to measure the resulting motor recovery after treatment. And the Numerical Rating Scale(NRS) was adopted to measure changes of pain level. Two patients both had Chuna Cranio-Sacral Therapy category III disorder with short right leg. We applied category III blocking technique everyday for 20 minutes with Korean medical treatments. Results : In both cases, the range of motions were improved and the pain level decreased. And in case 1, muscle strength also showed improvements. Conclusions : We suggest Chuna Cranio-Sacral Therapy is effective for pain decrease and motor recovery of FBSS patients. Further studies are needed to set up an Korean medical protocol for FBSS.