• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.353-353
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• 2004

• Journal of Broadcast Engineering
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• v.5 no.1
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• pp.23-30
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• 2000

• Proceedings of the Korean Vacuum Society Conference
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• 2008.08a
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• pp.284-284
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• 2008

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.222-230
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• 2018

This was a retrospective study that compared the characteristics of patients with decreased mental status (DMS) during their stays in an emergency department (ED) with that of patients with alert mental status (AMS). The participants in this study consisted of 90 patients with DMS who were staying in an ED along with 100 randomly selected patients with AMS. The DMS group contained more instances of cerebrovascular disease, liver disease, diabetes, and hypertension compared to the AMS group (p=0.001, p=0.003, p<0.001, and p=0.002, respectively). With regard to triage, the DMS group had higher severity than the AMS group (p<.001). The final diagnosis for the DMS group was as follows: 64.9% neurological and 63.3% related to the digestive system, which differed from that of the AMS group (p<.001). Fifty-six (62.2%) patients with DMS had their statuses discovered by nurses, while nine patients in the DMS group had received cardiopulmonary resuscitation. These results suggest that ED nurses frequently assess the consciousness of patients who they suspect may have neurologic or digestive diseases and are classified as high severity, even when the patients are alert.

• Journal of the Korean Electrochemical Society
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• v.19 no.1
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• pp.1-8
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• 2016

Capacity of layered lithium nickel-cobalt-manganese oxide ($LiNi_{1-x-y}Co_xMn_yO_2$) cathode material can increase by raising the charge cut-off voltage above 4.3 V vs. $Li/Li^+$, but it is limited due to anodic instability of conventional electrolyte. We have been screening and evaluating various sulfone-based compounds of dimethyl sulfone (DMS), diethyl sulfone (DES), ethyl methyl sulfone (EMS) as electrolyte additives for high-voltage applications. Here we report improved cycling performance of $LiNi_{0.5}Co_{0.2}Mn_{0.3}O_2$ cathode by the use of dimethyl sulfone (DMS) additive under an aggressive charge condition of 4.6 V, compared to that in conventional electrolyte, and cathode-electrolyte interfacial reaction behavior. The cathode with DMS delivered discharge capacities of $198-173mAhg^{-1}$ over 50 cycles and capacity retention of 84%. Surface analysis results indicate that DMS induces to form a surface protective film at the cathode and inhibit metal-dissolution, which is correlated to improved high-voltage cycling performance.

• Journal of Korea Multimedia Society
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• v.10 no.7
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• pp.893-901
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• 2007

Since real-time multimedia applications requiring duality-of-service guarantees are spreading over mobile and wireless networks, energy efficiency in wireless channels is becoming more important. Energy consumption in the channels can be reduced with decreasing the rate of scheduler's outgoing link by means of Dynamic Modulation Scaling (DMS). This paper proposes a fair queuing algorithm, termed Rate Efficient Fair Queuing (REFQ), in order to reduce the outgoing link's rate, which is based on the Latency-Optimized Fair Queuing algorithm developed to enhance Weighted Fair Queuing (WFQ). The performance evaluation result shows that REFQ does decrease the link rate by up to 35% in comparison with that in WFQ, which results in reducing the energy consumption by up to 90% when applied to the DMS based radio modem.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.4
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• pp.964-969
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• 2008

This paper proposes a HMM-based recognition method using DMSVQ(Dynamic Multi-Section Vector Quantization) codebook by DMS(Dynamic Multi-Section) model and fuzzy concept, as a study for speaker- independent speech recognition. In this proposed recognition method, training data are divided into several dynamic section and multi-observation sequences which are given proper probabilities by fuzzy rule according to order of short distance from DMSVQ codebook per each section are obtained. Thereafter, the HMM using this multi-observation sequences is generated, and in case of recognition, a word that has the most highest probability is selected as a recognized word. Other experiments to compare with the results of recognition experiments using proposed method are implemented as a data by the various conventional recognition methods under the equivalent environment. Through the experiment results, it is proved that the proposed method in this study is superior to the conventional recognition methods.

• Journal of Information Technology Application
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• v.1
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• pp.29-53
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• 1999

의사결정자 지원은 문제 인식, 대안 생성, 최적안 선정 등 협의의 의사결정 지원시스템 (Decision Support System, DSS) 뿐 아니라 의사결정자의 일상업무지원과 의사결정 능력 향상을 위한 교육을 포함한다. 본 논문의 목적은 의사결정자를 지워하기 위한 일종의 광의의 의사결정 지원 시스템인 의사결정자 지원시스템(Decision Maker Support System, DMSS)에 대한 개념적 틀을 제시하는 것이다. DMSS는 전통적인 의사 결정 지원시스템, 업무처리 시스템, 가상교육 시스템 및 이들을 통합 관리하여 특정 의사결정자의 요구에 맞게 구성해 주는 DMSS 관리자를 핵심 요소로 하며 원격의 의사결정자 존재를 생각하여 사용자 인터페이스는 웹 기반을 고려하였다. 특히 DMSS의 하위 시스템의 지식을 통합하기 위해 일원화된 지식베이스를 설계하였다. 그리고 DMSS의 가능성을 보이기 위해 가상 시나리오를 통해 설명하였다.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.06e
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• pp.361-364
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• 1998

본 논문은 인식 속도의 개선을 위해 단어의 지속시간에 따라 Section의 수를 변경한 가변섹션 수 DMS모델을 사용한 실시간 인식 시스템을 연구하고 인식된 결과를 실제 수행하도록 하는 시스템을 구현하는 것이 목적이다. 이러한 윈도우 음성 제어 시스템 구현을 위해 음성의 자동 검출, 윈도우 제어 모듈 구현, 동적 모델 재구성을 이용하여 적용된 단어 단위인식 시스템의 단점을 장점으로 수용하는 시스템을 구현하였고 본 시스템의 이름은 “VocManagerII”라 명명하였다. 구현된 시스템의 성능 평가 결과 인식 및 제어 수행 속도는 1초이내에 이루어지며 인식율은 66개의 기본 명령어에 대하여 화자 종속 99.36%, 화자 독립 99.08%의 좋은 인식율을 보여 주었다.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.807-808
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• 2008

In H.264, sub-pel motion estimation (ME) has strong effect when coding video sequences. 1/4-pel performs better at low bitrate while 1/8-pel gives better results at high bitrate. In this paper, a variable sub-pixel motion vector resolution based on block mode motion estimation method is proposed. Experiment results show that the proposed method can take the advantage of 1/4-pel at low bitrate and 1/8-pel at high bitrate. In addition to that, time is reduced from 14% to 53% compared to KTA1.3 with 1/8-pel motion vector (MV) resolution.