• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.10a
• /
• pp.751-752
• /
• 2016

사람들의 다양한 심리적인 질병으로서 분노나 스트레스, 불안, 초조, 긴장, 우울 등이 있다. 이런 심리적인 문제를 안정시키기 위해서 다양한 치료방법이 존재한다. 사람의 마음은 뇌의 영향을 받는데 마음은 의식과 무의식으로 나뉜다. 성격의 대부분을 형성하는 무의식이 마음의 대부분을 차지하지만 이는 아주 어렸을 때 형성되기 때문에 인지가 어렵다. 색채 치료에서 색채는 주관적인 심리가 강하기 때문에 개개인에 맞춰 좋아하는 색이나 안정이 되는 색을 봄으로서 심리를 안정시킬 수 있다. 본 연구에서는 색채를 통하여 마음이 안정할 수 있도록 하는 시스템을 개발하는 것을 목적으로 한다.

• Journal of Microbiology and Biotechnology
• /
• v.18 no.7
• /
• pp.1274-1277
• /
• 2008

The inactivating efficiency of alternating high-voltage pulsed (AHVP) current was investigated in brine (20 w/v% NaCl) and saline (0.9 w/v% NaCl) inoculated with $1\times10^7$ cells/ml of Listeria monocytogenes. AHVP current at 12 V with 1 pulse completely inactivated L. monocytogenes in brine within 3 ms, while the bacteria in saline were fully inactivated by 10-pulsed electric treatment at 12 V within the same time. Electron microscopic observation demonstrated substantial structural damage of electrically treated L. monocytogenes in brine. These results suggest that AHVP treatment would be effective for the rapid and complete inactivation of L. monocytogenes in brine or saline solution.

• Proceedings of the KOSOMBE Conference
• /
• v.1996 no.05
• /
• pp.143-146
• /
• 1996

An adaptive digital filtering of the electroencophalogram(EEG) is a successful way of suppressing mains interference, but it affects some of the frequency components of the signal, an artifact which not be acceptable in some cases of automatic EEG processing. The types of electrical artifact seen on EEG records is described. Those are the EOG and the PVC roller pump noise. And we study the method for cancelling these artifacts. The method does not need the reference channel, and are obtained by cascading the linear predictor and the noise canceller. The simulation results illustrate the performances of the presented method in terms of the capability of interferences suppression.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.126-127
• /
• 2023

현대사회에 유행처럼 자리잡은 웨이트 트레이닝의 부상률이 높은 것으로 확인되었다. 가장 큰 부상 원인은 '무리한 동작'으로 자신이 수행할 수 있는 운동강도를 인지하지 못하여 근력 유지가 되지 않아 발생한다. 이러한 문제를 해결하기 위하여 근력 유지 실패를 일으키는 원인인 '근피로도'를 검출하여 개인에게 적합한 운동 강도를 찾는 연구를 진행하였다. 그 결과, MNF 기울기 분석을 통해 운동 반복횟수가 증가함에 따라 근피로도가 커지는 것을 확인하였다. 향후, 잡음에 강한 매개변수를 바탕으로 연구가 이어진다면 웨이트 트레이닝의 부상률이 낮아질 것으로 사료된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.122-123
• /
• 2023

청각 기능에 문제가 생겨 소리를 잘 듣지 못하는 청각장애인은 육아를 위해 베이비시터를 고용하거나 청각장애인용 소리감지 시스템을 사용하지만, 이는 비용적으로 부담이 될 수 있다. 이러한 문제를 해결하기 위해 사운드 센서 기반의 아기 울음소리감지 시스템을 제안한다. 이는 아기가 있는 곳에 소리감지 시스템을 설치하고, 일정 크기 이상의 소리가 감지되면 손목시계 모양의 웨어러블 디바이스에 진동을 발생시켜 아기가 울고 있음을 알려준다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.1004-1005
• /
• 2023

본 연구에서는 PVDF 압전 센서와 IR 체온 센서 등을 활용하여 비접촉, 무(無) 구속 방식으로 요람에 있는 영유아의 바이탈 신호를 상시 측정하여 '영아 돌연사 증후군' 등 위험한 상황에 빠졌을 때 애플리케이션을 통하여 즉각 보호자에게 알리고 대처 방안을 제시하며, 상시 영·유아 모니터링이 불가능한 맞벌이 부모 등에게 자동 상태 경보 서비스를 제공하기 위하여 스마트 요람을 개발하였다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.134-135
• /
• 2023

수재해의 증가로 인한 지하차도 침수 사고가 빈번히 발생하고 있다. 지하차도 침수 사고를 예방하기 위한 여러 대비책들이 있지만, 예방적 관점에서 볼 때 사람이 직접 모니터링 하는 방법 이외에는 적절한 예방책이 되지 못한다. 이러한 문제를 해결하기 위해 강수량에 따른 지하차도 진입 여부 시스템을 제안한다. 강수량과 배수량의 차이를 통해 침수 위험도를 판단하여 진입 여부를 파악 후 운전자에게 정보를 전달해 사고를 예방할 수 있다.

• IMMUNE NETWORK
• /
• v.20 no.4
• /
• pp.34.1-34.8
• /
• 2020

Cryopreservation and thawing of PBMCs are inevitable processes in expanding the scale of experiments in human immunology. Here, we carried out a fundamental study to investigate the detailed effects of PBMC cryopreservation and thawing on transcriptomes. We sorted Tregs from fresh and cryopreserved/thawed PBMCs from an identical donor and performed single-cell RNA-sequencing (scRNA-seq). We found that the cryopreservation and thawing process minimally affects the key molecular features of Tregs, including FOXP3. However, the cryopreserved and thawed sample had a specific cluster with up-regulation of genes for heat shock proteins. Caution may be warranted in interpreting the character of any cluster of cells with heat shock-related properties when cryopreserved and thawed samples are used for scRNA-seq.

• Journal of Biomedical Engineering Research
• /
• v.44 no.6
• /
• pp.363-376
• /
• 2023

According to the COVID-19, development of various medical software based on IoT(Internet of Things) was accelerated. Especially, interest in a central software system that can remotely monitor and control ventilators is increasing to solve problems related to the continuous increase in severe COVID-19 patients. Since medical device software is closely related to human life, this study aims to develop central monitoring system that can remotely monitor and control multiple ventilators in compliance with medical device software development standards and to verify performance of system. In addition, to ensure the safety and reliability of this central monitoring system, this study also specifies risk management requirements that can identify hazardous situations and evaluate potential hazards and confirms the implementation of cybersecurity to protect against potential cyber threats, which can have serious consequences for patient safety. As a result, we obtained medical device software manufacturing certificates from MFDS(Ministry of Food and Drug Safety) through technical documents about performance verification, risk management and cybersecurity application.The purpose of this study is to conduct a usability assessment to ensure that ergonomic design has been applied so that the ventilator central monitoring system can improve user satisfaction, efficiency, and safety. The rapid spread of COVID-19, which began in 2019, caused significant damage global medical system. In this situation, the need for a system to monitor multiple patients with ventilators was highlighted as a solution for various problems. Since medical device software is closely related to human life, ensuring their safety and satisfaction is important before their actual deployment in the field. In this study, a total of 21 participants consisting of respiratory staffs conducted usability test according to the use scenarios in the simulated use environment. Nine use scenarios were conducted to derive an average task success rate and opinions on user interface were collected through five-point Likert scale satisfaction evaluation and questionnaire. Participants conducted a total of nine use scenario tasks with an average success rate of 93% and five-point Likert scale satisfaction survey showed a high satisfaction result of 4.7 points on average. Users evaluated that the device would be useful for effectively managing multiple patients with ventilators. However, improvements are required for interfaces associated with task that do not exceed the threshold for task success rate. In addition, even medical devices with sufficient safety and efficiency cannot guarantee absolute safety, so it is suggested to continuously evaluate user feedback even after introducing them to the actual site.

• Journal of Biomedical Engineering Research
• /
• v.31 no.2
• /
• pp.123-128
• /
• 2010

The thermometers is widely used in diagnostic medical devices, and the safety and accurate performance of these devices are important in the diagnosis and monitoring of personal health. Especially, the accuracy of infra-red thermometer is highly emphasized. Here two typical thermometers are utilized for this purpose: the electronic thermometers measure body temperature by contacting to subject while infra-red thermometers measure by no contacting to subject. Therefore, the evaluating items of each thermometer are different, and the standard for each temperature is highly needed. But, there have been no international standards of each thermometer such as IEC. In this paper, we developed the standards of electronic and infra-red thermometer based on national standards such as KS, ASTM, EN, JIS and FDA guidance. The new standards focused on the safety and suitable performance for health care. This standards were applied to enact and revise the electronic medical device standards. So it can be applied to evaluate the safety and performance on technical file review. We predict that this standard will improve the quality of diagnostic medical devices (thermometers) and increase the international competitive power of domestic product.