• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.285-293
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• 2015

This study was performed in order to provide better quality health care services and satisfaction, the basis for the differential rating system to be operational by identifying how to recognize and respect in hospital operating efficiently and according to the rating differential with convalescent hospital doctors and nursing staff target was. The results of this study are as follows. Rating and doctors as a result of the independent sample t-test to analyze the differences of the nursing grade, second grade doctors were able to see that higher efficiency and improve the patient's rights organization in nursing improving patient safety in two grades, improve care and patient rights this product was confirmed to be enhanced higher. Doctor and as a result of the ANOVA analysis to analyze the differences in accordance with the nursing staff level, improve patient safety, hospital finances, the hospital doctor in the first grade, Nursing grade 2, the right to improve patient education and self-development, and two doctors, nursing grade 1 in was found that high. Overall, doctors, nursing staff of higher grade, first grade and second grade is the difference between me and a different result each category future convalescent hospital doctors and nursing staff of the differential rating system 1, it is necessary to consider restructuring among a calculation based on 2 ratings there will be.

• The Journal of the Acoustical Society of Korea
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• v.19 no.2
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• pp.61-67
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• 2000

Recent progress in digital and VLSI technology has offered new possibility fer noticeable advance of hearing aids. Yet, environmental noise remains one of the major problems to hearing aid users. This paper describes results which speech recognition performance and speech discrimination performance was measured for listeners with sensorineural hearing loss, while listeners in speech-band noise. In addition, to ameliorate hearing-aided environments of hearing impaired listeners, environmental noise reduction using speech enhancement techniques are investigated as a front-end of conventional hearing aids. Speech enhancement techniques are implemented in a realtime system equipped with DSP board. The clinical test results suggest that the speech enhancement technique may work in synergy with gain functions fer the greater SNR improvement as the preprocessing algorithm of digital hearing aids.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.6
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• pp.110-120
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• 2008

Cognitive Radio (CR) technology is proposed for using the unused spectrum band efficiently because of the spectrum scarcity problems. Spectrum sensing technology is one of the key challenge issues in cognitive radio technologies, which enables unlicensed users to identify and utilize vacant spectrum resource allocated to primary users. In this paper, the cooperative spectrum sensing technologies apply the ITS(Intelligent Transport System) and performance of signal detection analyzes. Then, we utilize the OR-rule and AND-rule for the cooperative signal detection. These data fusion rules improve the performance and reliability of the signal detection.

• Review of KIISC
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• v.23 no.3
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• pp.5-13
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• 2013

정보보호 분야의 국제표준화는 기술들의 특성 및 참여하는 사용자들의 관점에 따라 다양한 국제표준화기구에서 국제표준개발 및 관련 연구가 진행되고 있다. 즉, ITU-T SG17(보안)에서는 전기통신(Telecommunication) 관점에서 통신망에 적용 가능한 응용기술들을 중심으로 국제표준화가 추진되고 있으며, ISO/IEC JTC1/SC27(정보보호)에서는 정보보호 원천기술들에 대한 국제표준화를 다루며, IETF Security Area에서는 인터넷 서비스의 품질 보장 및 향상된 인터넷 환경 구축을 위한 산업체 중심의 사실표준을 추진하고 있다. 그리고 유럽 및 아시아 지역에서 국가간에 정보통신 표준화와 국제표준화 기구들에 대한 공동 대응을 위한 ETSI, ASTAP, CJK Security WG 등에서도 지역 내 정보보호 표준화 활동들이 이루어지고 있다. 또한, 이러한 국제표준기구는 참여하는 이해 당사자가 국가(National Body)인지 혹은 산업체 등의 이해당사자들 간에 참여인지에 따라 특성 또한 달라지며, 표준을 개발하는 절차가 공식적인 방법에 따른 것인지 이해 당사자들 간에 합의에 의한 것인지에 따라 구분될 수도 있다. 본 논문에서는 2011년 11월, 두바이에서 개최된 ITU-T WTSA-12(세계정보통신표준총회) 국제회의 결과를 바탕으로 향후 4년간의 ITU-T SG17 국제표준화 활동 방향에 대한 정보를 제공하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.07a
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• pp.259-261
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• 2015

The model for ship maneuvering simulation is to enhance the competence of officer's ship maneuvering skills such as navigation equipment operation, collision avoidances, countermeasure an emergency situation so on. Despite using such ship maneuvering model, critical maritime accidents are occurred periodically in the world. To find adequate simulation model to evaluate competence abilities of deck officer who have maneuvering skills with some competence levels, we search the standard ship maneuvering method representing on the part 3 Person Overboard(POB) to onboard emergences of IAMSAR manual. Moreover we monitor the officer's human factors appearing during education and training and consider the use of human factors as fundamental data.

• Journal of Internet Computing and Services
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• v.13 no.3
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• pp.83-91
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• 2012

Recently, column-oriented storage has become a progressive model for high-speed database systems because of its superior I/O performance. In this paper, we analysis traditional raw-oriented storage model and then propose a new column-aware storage management model using flash memory drive and assist drive to improve the effective performance of the high-speed column-oriented database system. Our storage management scheme called column-aware polarization improves the performance of update operation by dividing and compressing table columns into active-columns or inactive-columns, and balancing congested update operations using a assist drive in high workload periods. The results obtained from experimental tests show that our scheme improves the update throughput of column-oriented storage by 19 percent, and the response time by up to 49 percent.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06a
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• pp.108-111
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• 2011

최근 스마트폰을 이용하여 위치, 움직임, 주위 환경 정보 등과 같은 사용자의 상황을 인지하고, 인지한 컨텍스트를 기반으로 어플리케이션이 능동적으로 기능을 제공하기 위한 연구가 활발하다. 그러나 현재 켠텍스트 인지 모바일 어플케이션에서는 단일 사용자의 현재 컨텍스트에 국한되어 컨텍스트를 활용하고 있다. 본 논문에서는 제안하는 컨텍스트 Visualizer에서는 포괄적인 컨텍스트 정보의 활용을 위해 컨텍스트 정보를 개인, 그룹별로 분류하여 보여준다. 또한, 과거, 현재, 미래 컨텍스트 정보를 고려하여 화면에 보여줌으로써 컨텍스트의 활용 범위를 향상시킨다. 이를 위하여 온 논문에서는 모바일 컨텍스트 종류를 설명하고, 이를 보여주기 위한 컨텍스트 Visualizer의 설계를 제시한다. 또한 설계 모델을 기반으로 구현한 프로토타입을 보여주고, Visualizer의 활용을 제시함으로써 연구의 실효성을 보여준다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.113-116
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• 2007

This paper describes the development of an optimal 3D maze path game as web-based game contents. Client user using web can access and run java applet program with download of java byte code with the independence of hardware system. The optimal 3D maze path game developed in this paper consists of random maze path generation module, selected path input module, weighted optimal path search module, and path comparison module. It enhances the cognition faculty of game users with the comparison of the maze path searched by optimal path search algorithm and the selected maze path by game users.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.340-345
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• 2008

Web2.0 이라는 인터넷 환경의 변화 속에서 사용자들의 자발적인 참여를 통해 생산된 컨텐츠(UCC)가 화두가 되고 있다. 다수의 사용자 참여는 집단지성을 발휘하고 이렇게 생성된 UCC 는 새로운 가치를 창출한다는 믿음이 확산된 가운데, 사용자는 더 이상 정보수용자의 입장이 아닌 정보제공자의 입장에서 컨텐츠 생성에 대한 범위와 역할이 크게 향상되고 있다. 그렇다면 과연 무엇이 이러한 사용자 생성 컨텐츠의 창의성에 가장 큰 원동력이 될까 또한 무엇이 집단지성, 집단의 창의성을 창출하는데 가장 큰 영향을 미칠까? 본 연구는 이러한 의문에서 출발하였다. 이와 같은 연구 문제를 해결하기 위하여 피드백과 동기 그리고 창의성에 기반한 인지 평가 이론과 창의성에 관한 사회적 특성이론에 근거, 상호작용 즉 컨텐츠에 대한 피드백을 기반으로 연구모형을 세우게 되었다. 이러한 연구 모형을 설문을 통해 검증해 본 결과, 피드백이 사용자의 동기에 긍정적인 영향을 미치고, 결국 그러한 동기가 개인의 창의성 및 집단 창의성에 긍정적인 영향을 미친다는 결론을 얻을 수 있었다. 이러한 연구 결과는 이론적으로는 인지 평가 이론의 확장 적용 및 CSCW 환경에서 암묵적으로 인식된 피드백과 같은 상호작용의 중요성을 공고히 하는데 기여할 수 있으며, 실제로는 이러한 피드백 요소를 시각적으로 적절히 배치 및 노출하여 사용자의 내적 용기와 창의성을 촉진하여야 함을 밝힌다는데 의의를 가질 수 있겠다.

• Korean Journal of Adult Nursing
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• v.29 no.2
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• pp.177-189
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• 2017

Purpose: A meta-analysis was conducted to identify the effect of cognitive improvement programs for the elderly with mild cognitive impairment (MCI) in Korea. Methods: Five databases, as well as relevant reference lists, of studies published from 2000 to 2016, were searched. Fourteen studies were identified. Quality assessments of included studies were conducted using the Scottish Intercollegiate Guidelines Network checklist. An R program was used to analyze effect sizes and to identify possible sources of heterogeneity among studies. The potential for publication bias was investigated using a funnel plot, Egger's regression test and sensitivity analysis. Results: The total effect size was large (Standardized Mean Difference [SMD]=1.44, 95% CI: 1.11~1.77), with cognition based intervention (SMD= 1.77, 95% CI: 1.26~2.29) and exercise intervention (SMD=1.13, 95% CI: 0.82~1.44). Statistically significant moderators were identified intervention type by meta-ANOVA analyses. Finally, no significant evidence of publication bias was found. Conclusion: There is clear evidence that cognitive improvement programs can greatly enhance cognition in elderly with MCI. Future research should examine the effects of non-pharmacological interventions targeting elderly populations with mild-to-severe cognitive impairment in order to develop and enhance the effectiveness of cognitive improvement programs in Korea.