• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2019년도 하계학술대회
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• pp.204-206
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• 2019

본 논문에서는 미국 재난문자방송 서비스인 WEA의 개선 사항 중 지역맞춤형 서비스를 중점적으로 서술한다. WEA에서 정의하는 지역맞춤 서비스, 이를 위한 미국 연방 규칙에 대해 서술한다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2019년도 추계학술대회
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• pp.140-142
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• 2019

이 연구에서는 재난문자에서의 외국어 제공 현황에 대해 알아보았다. 우선, 뉴스를 분석한 결과, 외국인들은 국내 재난문자의 문제점으로 한국어라는 언어 제공 한정을 꼽았다. 다음으로, 미국은 WEA 규정에 따라 영어 외에 스페인어로 된 경고 메시지를 지원해야 하는 것으로 나타났다. WEA에서의 다국어 제공을 위한 다양한 노력도 하고 있었다. 마지막으로, 일본은 이동통신사 차원에서 다국어 재난문자를 지원하고 있는 것으로 나타났다. NTT DOCOMO는 외국인을 위해 일본어 재난문자를 영어, 중국어, 한국어로 번역해 주는 기능을 제공하고 있었다. KDDI도 NTT DOCOMO가 제공하는 언어 외에 포르투칼어, 스페인어도 제공하고 있었다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2021년도 하계학술대회
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• pp.123-124
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• 2021

이 연구에서는 국내 재난문자와 미국 WEA의 법령과 표준의 관계를 비교하였다. 국내 재난문자 재난 및 안전관리 기본법을 상위법으로 두는 법령이 있으나 기술적 내용은 대부분 민간 표준단체(TTA)의 표준으로만 제정되어 있다. 따라서 이동통신사와 단말기 제조사는 의무적으로 준수해야 하는 법적 근거가 없다. 한편, 미국은 WEA 연방 규칙에서 기술적 내용을 포함하고 있어서 이동통신사와 단말기 제조사는 의무적으로 해당 내용을 준수해야 한다. 이에, 국내는 이동통신사와 단말기 기종별로 재난문자 서비스의 차이가 발생하고 있지만 미국에서는 이러한 차이를 발견하기 어렵다.

• 대한한방내과학회지
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• 제21권4호
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• pp.661-665
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• 2000

Amyotrophic Lateral Sclerosis(ALS) is a fatal neuromuscular disease characterized by progressive muscle weakness resulting in paralysis. ALS is characterized by both upper and lower motor neuron damage. Diagnostic tests include magnetic resonance imaging(MRI) electromyogram(EMG), muscle biopsy, and blood tests. In order for a definitive diagnosis of ALS to be made, damage must be evident in both upper and lower motor neurons. When three limbs are sufficiently affected, the diagnosis is ALS. There is no cure for ALS. We recently experienced one case of ALS, The patients was diagnosed as ALS by EMG and Symptoms. We diagnosed her as Wea jeung and treated by Herbal-medication based on the differentiation of symtoms. we report change of his symptoms through both western medical treatment and oriental medical treatment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.1336-1338
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• 1996

A new model of dynamic hysteresis loops is presented. The model is a TSK fuzzy model and can be identified by using input-output data obtained from hysteresis loop systems. The model is shown to exhibit an increase in area of the loop with frequency, which is a hysteretic property.

• 한국산업융합학회 논문집
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• 제7권4호
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• pp.369-376
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• 2004

It is shown that the rate of wear can be related to on 'index of wear intensity'. Since both upper and lower specimens have used the same hardness values, equivalent hardness of 'index of wear intensity' used the mean hardness value of specimens. This index is derived from the external variables of load, sliding speed and the hardness of the sliding pairs. The wear behavior as the hardness of the sliding elements on the dry wear has been investigated using a disc on disc configuration. The materials of the specimens are used as ten kinds along their hardness. Using experimental data, we figured the relationship between wea rate and index of wear intensity. The result had been derived a newly wear equation in disc on disc wear system.

• 대한자기공명의과학회:학술대회논문집
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• 대한자기공명의과학회 2001년도 제6차 학술대회 초록집
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• pp.169-169
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• 2001

Purpose： To assess the clinical usefulness of Transfer Insensitive Labeling Technique (TILT) in t evaluation of ischemic cerebrovascular disease. Method： Arterial spin labeling (ASL) is a method of perfusion weighted imaging usin endogenous water as a tracer. To avoid MT-related artifacts, which is common in usual A technique, a transfer insensitive labeling technique (TILT) was used, which globall manipulate macromolecular spins in the same way by both labeling and reference preparatio while free water is labeled in one case and left unchanged in the other. Philips Interal 1.5 T system was used. 40cm FOV and 32 repeated measurements were done because of the wea perfusion signal. 5 slices of supratentorial brain were obtained in 5 patients ｛MCA infar (n=3), moyamoya disease (n=2)｝. We simultaneously obtained contrast enhanced T2＊-weighted perfusion MRI and correlate to TILT images.

• 한국통신학회논문지
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• 제21권4호
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• pp.961-971
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• 1996

The effect of inband TDMA narrow band jammers to DS-CDMA system performance and the suppression techniques are investigated using Monte Carlo simulations. TIA stantard North American Digital Cellular wea used as jammer. Levinson Dubin and conventional recursive least square algorithm were emphasized since these techniques can be implemented with a few DSPs for CDMA application. Two filter structures, i.e., complex suppression filter and real suppression filter in each inphase and quadrature channels, are investigated and their performances are compared. Complex suppression filter with Levinson Durbin algorithm of 20msec updata rate is the most promising with respect to implementation and performance poit of view. Implementation feasibility is discussed and the channel capacity lost by suppression is computed.

• 생명과학회지
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• 제17권12호
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• pp.1709-1716
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• 2007

본 연구에서는 몇 가지 암세포를 대상으로 마늘 열수추출물(WEAS)의 항암활성을 조사하였으며, 비교적 높은 감수성을 보인 백혈병세포를 대상으로 세포증식억제가 apoptosis 유도와 연관성이 있음을 제시하였다. WEAS에 의한 U937 세포의 apoptosis 유도는 세포주기 G2/M arrest와 연관성이 있었으며, 다양한 apoptosis조절 유전자들의 발현 변화를 동반하였음을 확인하였다. 이러한 apoptosis조절 인자들의 발현변화는 미토콘드리아 막 전위의 소실과 연관성이 있었으며, WEAS에 의한 암세포의 G2/M arrest에 의한 apoptosis 유발에 ROS가 중요한 조절자로 작용함을 알 수 있었다.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 2006년도 Spring Conference
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• pp.123-135
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• 2006

Alzheimer's disease (AD) is the most common form of dementia in the aging population and is clinically characterized by a progressive loss of cognitive abilities. Pathologically, it is defined by the appearance of senile plaques - extracellular insoluble, congophilic protein aggregates composed of amyloid $\beta$ (A$\beta$) and neurofibrillary tangles (NFTs) - inyracellular lesions consisting of paired helical filaments from hyperphosphorylated cytoskeletal tau protein as described by Alois Alzheimer a century ago. These hallmarks still serve as the major criteria for a definite diagnosis of the disease. Consequently, one of the key strategy for drug development in this disease area focuses on reducing the concentration of cerebral A$\beta$ plaque by using substances that inhibit A$\beta$ fibril formation. We focused on developing inhibitors by synthesizing several kinds of aromatic molecules. The synthetic compounds were initially screened to evaluate the effective compound by tioflavin T fluorescence assay. The selected effective compounds were tested cytotoxicity and protective effect from A$\beta$-induced neuronal toxicity by cell based MTT assay with HT22 hippocampal neurons. The BBB permeability on effectors was also tested in in vitro co-culture model(HUVEC/C6 cell line). The behavior test wea carried out in mutant APP/PS1 transgenic mouse model of Alzheimer's disease. And inhibition of A$\beta$ fibril formation by the effective compound was monitored with transmitted electron microscopic images.