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조기호,윤환식,장준혁,김남수,Cho, Ki-Ho,Yu, Hwan-Sik,Chang, Jun-Hyuck,Kim, Nam-Soo 한국음향학회 2009 韓國音響學會誌 Vol.28 No.2
Acoustic OFDM is used for audible frequency band acoustic communication which employs loudspeaker as transmitter and microphone as the receiver antenna. Since acoustic OFDM can transmit about 1 kbps using 1600 Hz band. acoustic OFDM signal is inserted into the audio signal like music or speech, However. audio quality deteriorates definitely during the inserting process. This paper introduces a reason for audio quality deterioration and discuss how to reduce this phenomenon. 음향 OFDM (Acoustic OFDM)은 스피커와 마이크를 이용한 가청주파수 대역에서 음향 통신을 하기 위해 제안된 것으로, 1600 Hz의 대역을 사용할 때 약 1 kbps로 데이터를 전송할 수 있다. 음악이나 음성 등의 오디오에 음향 OFDM 신호를 삽입하여 음향 통신을 하는데, 오디오에 음향 OFDM을 삽입하게 되면 OFDM 프레임의 보호 구간, 프레임 간의 중첩 구간 그리고 대역 저지 필터의 저지대역 성분 등에 의해 필연적으로 음질 저하의 문제점이 발생한다. 본 논문에서는 음향 OFDM 신호를 삽입한 오디오에서 발생하는 음질 저하의 원인을 체계적으로 분석하고, 음질 저하를 줄일 수 있는 방안에 대해 논의한다.
Effect of Gui-zhi-fu-ling-wan on Hot Flashes in Young Patients: A Retrospective Case Series
조기호,김영숙,정우상,김태훈 사단법인약침학회 2011 Journal of Acupuncture & Meridian Studies Vol.4 No.2
Hot flashes are one of the main problems in postmenopausal patients. Hormone replacement therapy is the standard treatment for this vasomotor symptom, but long-term estrogen treatment can produce serious adverse effects such as higher risks of cardiovascular disease and breast cancer. For this reason, hormone replacement therapy may not be advisable for young patients. Gui-zhi-fu-ling-wan is an herbal decoction for hot flashes used in traditional Chinese medicine. We have extensive experience treating hot flashes in young women; this preliminary case series evaluates the effectiveness of Gui-zhi-fu-ling-wan for alleviating hot flashes in young patients. In this retrospective case series, we reviewed the medical records of outpatients who visited the Department of Cardiovascular and Neurologic Disease, Kyung Hee Oriental Medical Center for hot flashes from October 1, 2003 to October 1, 2008. Of the 60 cases, 37 met the inclusion criteria. Mean improvement in symptoms, as assessed using the visual analog scale, was 40.4 ± 28.5%; 51.3% of patients experienced a 50% improvement. According to the secondary analysis, the results of differential diagnosis of cold and hot syndrome and blood stasis syndrome did not affect scores. Only 2.7% of the patients reported adverse events. Our findings suggest that Gui-zhi-fu-ling-wan improves hot flashes in young patients in a relatively safe manner. However, rigorous clinical studies are needed to confirm these results.
조기호,지남규,정우상,박성욱,Sang-kwan Moon,고창남,Young-suk Kim,Hyung-sup Bae 대한한의학회 2007 대한한의학회지 Vol.28 No.1
Background: Chunghyul-dan is a combinatorial herbal medicine; previous studies reported it had therapeutic effects for microangiopathy, a major part in the progression of small vessel disease, as well as having anti-hypertensive, anti-hyperlipidemic, anti-apoptotic, anti-oxidative, and anti-inflammatory activities. Therefore, we examined the inhibitory effect of Chunghyul-dan on stroke recurrence in patients with small vessel disease. Methods: We prescribed Chunghyul-dan at 600 mg a day to patients with small vessel disease, and monitored stroke recurrence, drug compliances, and adverse effect for 1 year. We then performed follow-up brain MRI to find new vascular lesions after 1 year of Chunghyul-dan medication. For the subjects lost to follow-up, we assessed their prognosis after 1 year by telephone. Results: There were 73 subjects treated with Chunghyul-dan for 1 year; new vascular events were found in 3. Of the 85 subjects lost to follow-up, fifty four could be contacted, and eight of them had stroke recurrence. One year of Chunghyul-dan medication reduced the odds ratio of stroke recurrence by 75% compared to the subjects lost to follow-up and the rate increased to 88%, when adjusted for other relevant risk factors for stroke occurrence. These reductions were much higher than those of aspirin and other kinds of conventional anti-platelets. There was no adverse effect in any of the study subjects. Conclusions: We suggest Chunghyul-dan could be useful for inhibition of stroke recurrence. Further study with a randomized controlled trial is needed to confirm this suggestion.
조기호,이병렬 한국정신과학학회 2003 韓國精神科學學會誌 Vol.7 No.1
X -energy-vein was found in the site of big dolmens in Gochang Korea. The big dolmens in Gochang were located in knot-areas of x-energy-vein The possibility of using traditional pungsugeographic location theory for the building of these dolmens is high.
조기호 한국정토학회 2003 정토학연구 Vol.6 No.-
Historical changes of Japanese graveyards are dealt with in this study, with focuses brought into some major turning points throughout the history. Amid an influx of Japanese culture in various fields today, this study lays weight on exploring the method of treating mortal bodies during the Japanese ‘EDO(江戶)’ era which has been thought to have a relatively advanced burial system. Such a study, I am sure, will definitely help contribute to correct orientation of Korea's burial policy in more desirable manner. Under the section “A Study on the burial methord and the grave system of the last stage of Morden ages, the cloing days of the ‘EDO’ era”, features of burial system and method in the cloing days of the ‘EDO’ era, emergence of ‘SOSIKI(葬式)’ Buddhism and ‘DANKA(檀家)’ system, and details of RYOBOSAI(兩墓制) and SOBOSAI(總墓制) are reviewed. From the review, it was found that interment, a way of burial in soil, was the main method employed during the era under the influence by Confucianism as state religion in place of Buddhism which was prevailed in the near modern pre-EDO era. It must be noted, however, that Japanese unique burial system such as RYOBOSAI and SOBOSAI started to take forms when ‘SOSIKI’ Buddhism and ‘DANKA’ system were instituted in spite of the widely practiced tendency of burial after cremation. It is anticipated in the future that, not only in Japan but also in Korea, so-called ‘natural method of burial’ or ‘ash scattering’ will be adopted as official policy for reason of its environment-friendliness for the visitors who come to graves. It is, thus, advised for Japanese government agencies to reorganize various concerned systems in a try to induce bereaved family members to visit graveyards without hesitation. The policies in this regard may include immediate disposition of neglected graves, development of new types of graves and new strategies for grave management etc.