• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.416-419
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• 2020

기존 종이 헌혈증의 단점을 보완하기 위해, 블록체인과 DID 를 활용하여 개발한 전자 현혈증 서비스로 헌혈자에게 편리한 헌혈증 사용 및 기부 인터페이스를 제공한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.468-471
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• 2020

본 연구에서는 사용자의 접속 기록을 상세하게 모니터링할 수 있는 DNS 패킷 기반 분석과 사용자별 프로세스 분석 기법을 융합한 네트워크 모니터링 시스템 설계를 제안한다. 네트워크 패킷 수집을 위한 탭 장비와 사용자 디바이스에 플러그인 형태 프로그램 설치를 통하여 어떤 프로세스에서 패킷이 발생하였는지 분석이 가능하다. 이를 통해 네트워크 증설을 위한 데이터 확보, 악성 패킷 분류를 위한 데이터로의 사용 등 다양한 방법으로 활용할 수 있는 확장형 도메인 모니터링 시스템을 제안한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.239-240
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• 2022

본 논문은 안드로이드 플랫폼의 내장 센서 중 만보기 기능을 구현할 수 있는 걸음 횟수 센서(Step Counter Sensor)와 걸음 감지 센서(Step Detector Sensor), GPS 센서, Google Map API, 공공 데이터 포털 Open API를 활용하여 국내 여행지 및 국내 지역 축제 정보를 제공하는 애플리케이션을 설계하고 구현한다. 이 애플리케이션은 특정 걸음 수를 달성했을 때 국내 여행지를 무작위로 추천하여 추천 지역까지의 걸음 수를 카운트하는 방식으로 사용자에게 목표를 부여하고, 추천 국내 여행지 방문 및 축제 참여 기회와 성취감을 얻도록 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.87-88
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• 2023

본 논문에서는 COVID-19 팬데믹으로 인해 사회적 거리두기 및 규제조치가 시행되면서 다양한 분야에서 큰 영향을 가져왔다. 변화된 홈트레이닝 분야는 운동기구를 구비하여 개인운동을 통해 건강을 유지하고 있으나 전문적인 교육을 받지 않은 홈트레닝으로 부상 위험에 노출 되고 있다. 요가는 호흡운동과 명상을 지향하는 운동으로 요가의 효과를 얻기 위해 올바른 움직임과 자세가 중요 하다. 본 논문에서는 실시간으로 입력된 영상 프레임을 OpenCV와 MediaPipe를 통해 추출된 주요좌표 값을 벡터 내적공식을 대입, 코사인2법칙을 통해 요가의 올바른 자세를 분석하여 종합적인 정보를 제공하는 요가교정 모델이다.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2471-2474
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• 2003

This paper focuses on the stability and operability of a man-machine system considering a human operator. Some papers' main interest has been the stability only, but the operability such as fatigue is also the other main interest. In a man-machine system, feelings such as motional, visual, and kinesthetic are important since those enable operators to work easily or fatigue operators. A model of a man-machine system has been developed. Motional, visual, and kinesthetic feelings may be considered as feedbacked sensor signals. We also have quantified the degree of fatigue with respect to reference operation. This is a performance index to be optimized. Several methods are presented to optimize the degree of fatigue and the stability of the integrated system. Examples are presented to show that the usefulness of the proposed modeling method and fatigue mitigating algorithm.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2467-2470
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• 2003

In this paper, fault tolerant mechanisms are presented for a servo manipulator system designed to operate in a hot cell. A hot cell is a sealed and shielded room to handle radioactive materials, and it is dangerous for people to work in the hot cell. So, remote operations are necessary to handle radioactive materials in the hot cell. KAERI has developed a servo manipulator system to perform such remote operations. However, since electric components such as servo motors are weak to radiations, fault tolerant mechanisms have to be considered. For fault tolerance of the servo manipulator system, hardware and software redundancy have been considered. In case of hardware, radioactive resistant electric components such as cables and connectors have been adopted and motors driving a transport have been duplicated. In case of software, a reconfiguration algorithm accommodating one motor's failure has been developed. The algorithm uses redundant axis to recover the end effector's motion in spite of one motor's failure.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.1464-1469
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• 2003

In this paper, fault tolerant mechanisms are presented for a servo manipulator system designed to operate in a hot cell. A hot cell is a sealed and shielded room to handle radioactive materials, and it is dangerous for people to work in the hot cell. So, remote operations are necessary to handle the radioactive materials in the hot cell. KAERI has developed a servo manipulator system to perform such remote operations. However, since electric components such as servo motors are weakened with radiation, fault tolerant mechanisms have to be considered. For fault tolerance of the servo manipulator system, hardware and software redundancy has been considered. In the case of hardware, radioactive resistant electric components such as cables and connectors have been adopted and motors driving a transport have been duplicated. In case of software, a reconfiguration algorithm accommodating one motor's failure has been developed. The algorithm uses redundant axes to recover the end effector's motion in spite of one motor's failure.

• Journal of Korean Medical Ki-Gong Academy
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• v.19 no.1
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• pp.25-42
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• 2019

Objective : This study is a report on treatment effect of Korean medical treatment to ALS(Amyotrophic Lateral Sclerosis) patient. The purpose of this case study is to improvement of Korean medical treatment and evaluate prognosis and clinical course of ALS patients. Methods : The patient was treated by acupuncture, Su-Gi therapy, herbal medication, physical treatment. To determine the effects of Korean medical treatment, we evaluated every four days used by Korean version of Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (KALSFRS-R), Amyotrophic Lateral Sclerosis Severity Scale(ALSSS). Results : Before mental contraction caused by everyday life nursing management, symptoms such as lumbar pain, getting hoarse, lower limb powerless & spasticity, upper limbs powerless, neckache, tongue-tied etc. were improved after above treatment. K-ALSFRS-R and ALSSS scores were also increased till patient's mental contraction Conclusions : The Korean medical treatment is effective on local symptoms of ALS, and there is also functional improvement of ALS diagnosed by external examination. It is necessary to have more examination about ALS.

• Composites Research
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• v.33 no.3
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• pp.140-146
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• 2020

The purpose of this paper is to examine the possibility of weight reduction by changing the partition panel of vehicle from an existing aluminum material to carbon fiber reinforced plastics. Three weaving methods (plain, twill and satin) were used in the manufacture of composite materials, and they were produced and tested to derive their material properties. The analysis model of composite partition panel for torsional conditions was developed and the structural stability and system stiffness were evaluated according to Tsai-Hill failure criteria. With design variables for fiber orientation angles and stacking sequence, evolutional optimal algorithm was performed and as the results, the optimal composite partition panel was designed. In addition, the structural analysis results for strength and specific stiffness were compared with aluminum partition panels and composite partition panels to verify the possibility of weight reduction.

• Tuberculosis and Respiratory Diseases
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• v.72 no.2
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• pp.177-181
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• 2012

Activated charcoal is an inert substance and it is used in standard therapy in patients with acute intoxication. Charcoal has some side effects such as pulmonary aspiration, gastrointestinal complications, and electrolyte abnormalities. Although aspiration of charcoal is a rare complication, it can cause fatal sequelae. We report a 69-year old man who developed acute respiratory failure associated with charcoal aspiration after management of glyphosate poisoning. The patient was drowsy and suffered severe vomiting during transport to our hospital. On arrival, acute respiratory failure was observed due to charcoal aspiration, but the clinical state was improved with repeated bronchoscopy with a bronchoalveolar lavage (BAL). We presumed that the aspirated charcoal was an important factor in evoking a lung injury. Early bronchoscopy with a BAL might be an effective method for eliminating charcoal from the lung, especially in the case of a large amount of aspiration, and be helpful in decreasing respiratory failure due to charcoal aspiration.