• Korean Journal of Acupuncture
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• 제36권1호
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• pp.44-51
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• 2019

Objectives : Teaching the standardized acupuncture point locations and improving the accuracy of acupoint locations through objective evaluation is a very important part of Korean medicine education. The aim of this study is to develop a dummy system for evaluation and support of teaching acupoint location in meridian and acupoints classes and to introduce the developed system. Methods : We established a protocol for the development of the system. The protocol included definition of usage purpose, definition of its essential performance, and set of scope. The system compares the amount of light at the target acupoint with the amount of light at the other sites to determine whether the target acupoint is properly specificated. Results : A prototype of the system was built according to the protocol and consists of light emitter, dummy, control/operation, input part and output part. The light emitter projects laser beam passing through the skin of the dummy. Light sensors were attached inside the acupoints of the dummy. Three types of light sensors were selected depending on the location of the acupoints. The arithmetic, input, and output parts were constructed using Arduino and Raspberry pi boards. The developed system was applied in class. Conclusions : It is thought that the dummy system for evaluation and support of teaching acupoint location can be used as a training model in order to help teach standardized acupoint locations and objective evaluation.

• Korean Chemical Engineering Research
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• 제60권3호
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• pp.433-438
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• 2022

탄소중립을 달성하기 위한 다양한 정책 및 프로젝트의 실효성을 평가하기 위하여 탄소순환 모델에 기반을 둔 방법을 제안한다. 제안된 모델은 산업혁명 이후 인류에 의한 탄소배출 및 삼림파괴 데이터로부터 대기 중 이산화탄소 농도 증가와 지구평균기온 상승을 적절히 재현함으로써 유효성이 검증되었다. 사례연구로는 삼림벌채, 재식림 및 추가식림에 대한 탄소순환 영향평가를 수행하였다. 대기 중 이산화탄소의 증가는 화석연료사용뿐 아니라 삼림벌채의 영향도 크며, 벌채 직후 재식림을 해도 초기농도로의 복귀는 매우 오래 걸린다는 것이 확인되었다. 제안된 방법은 궁극적으로 미래의 잠재적 기후제어 시뮬레이션에 활용됨으로써 다양한 기후공학 기술의 안전성 검증에 기여할 수 있을 것으로 예상된다.

• 보건행정학회지
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• 제33권3호
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• pp.253-263
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• 2023

Background: The purpose of this study was to explore the relationship between the local extinction index and total medical service utilization. Methods: A fixed effects model in panel analysis was performed for the 228 administrative districts in Korea. The statistical yearbook on the usage of medical services by region and Korean Statistical Information Service data were used from 2010 to 2019 for analysis. Medical service utilization was represented by the number of visits day, the number of inpatient days, and medical charges. Control variables were selected by using an Anderson model. The local extinction index was calculated using resident registration population data. Results: Descriptive statistics showed that the number of areas at risk of extinction increased from 61 to 95 for the study years. In addition, the number of visits, the number of inpatient days, and medical charges all increased during the study years. After controlling for variables affecting medical service utilization and doing a panel fixed effects model, the result suggested that a one-step increase in the local extinction index was significantly associated with a 12.29% decrease in medical charges of inpatients, a 7.33% decrease in medical charge of outpatient, a 5.21% decrease in the number of inpatient day, and a 5.54% decrease in the number of visits day. Conclusion: This study showed that the higher the region's extinction risks, the higher the region's total medical service utilization. The results of this study suggested that there was a disparity in medical service utilization between areas at risk of extinction and areas not at risk of extinction, so measures should be taken to address this disparity.

• 디지털콘텐츠학회 논문지
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• 제13권1호
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• pp.101-110
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• 2012

최근 소셜 네트워크 사이트는 모바일 디바이스 기능과 보급의 향상과 맞물려 큰 인기를 끌고 있다. 이에 따라 사용자의 소셜 네트워크 사이트 가입도 많아지고 있고, 서비스 사용도 더욱 활발해지고 있다. 그러나 사용자들의 수요에 비해서 각각의 소셜 네트워크 사이트 벤더들은 데이터 소유자가 다양한 루트로부터 생성한 콘텐츠를 다른 사용자들과 효율적으로 공유할 수 있도록 서비스를 제공하지 못하고 있다. 또한 여러 디바이스에서 생성된 콘텐츠들을 사용자가 정책으로 정한 관계에 따라 접근할 수 있도록 할 경우, 정책을 공유하는 과정에서 개인정보가 부적절하게 노출될 수 있고 이는 프라이버시 침해 문제를 야기할 수 있는 것이 자명한데, 이러한 문제를 해결할 수 있는 소셜 네트워크들의 통합 관리 방안은 미비한 상태이다. 따라서 본 논문에서는 다양한 소셜 네트워크들이 사용자로부터 생성된 콘텐츠를 공유할 때, 이에 사용되는 정책을 암호화한 상태에서 제3자에 의해 분류하도록 하여 사용자 프라이버시를 보호하는 동시에 콘텐츠를 효율적으로 분류하여 접근 제어 권한을 부여할 수 있도록 하는 모델을 제안한다. 제안하는 모델은 여러 장치들로부터 생성된 콘텐츠를 관리하기 위하여 RCBAC 모델을 기반으로 하여 이루어질 수 있도록 하고, 정책 공유 시 관계들 간의 유사도를 암호화 한 상태에서 측정하여 공격자로부터 사용자 정책 및 컨탠츠를 보호할 수 있도록 하는데 기여할 수 있다.

• Animal cells and systems
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• 제5권1호
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• pp.71-75
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• 2001

Spin is an abundant maternal transcript comprising up to 0.2% of the total mRNA stock in mouse oocyte, whose protein product is associated with the meiotic spindle. We have identified a new isoform of Spin transcript containing a distinct 5'-untranslated region and the N-terminus of encoded protein. Northern blot and RT-PCR analysis showed that the new isoform is expressed in embryos and most of adult tissues, while the previously identified transcript is expressed solely in mouse oocyte. We thus designated these two Spin isoforms as somatic type and oocyte type, respectively. To investigate the underlying mechanism for the differential expression, genomic structure of Spin was examined. Spin exists as multiple copies in the genome, some of which appears to be pseudogenes, and characterization of Spin genomic clones indicates that oocyte- and somatic-isoforms were generated by alternative splicing. The complex organization of Spin genomic locus and its multifaceted control of expression provide a good model to study the molecular mechanisms of elaborate genome usage in mammals.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제16권4호
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• pp.281-292
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• 2016

The proposed scheme is based on the modified perturb and observe (P&O) algorithm combined with the sliding mode technique. A modified P&O algorithm based sliding mode controller is developed to study the effects of partial shade, temperature, and insolation on the performance of maximum power point tracking (MPPT) used in photovoltaic (PV) systems. Under partially shaded conditions and temperature, the energy conversion efficiency of a PV array is very low, leading to significant power losses. Consequently, increasing efficiency by means of MPPT is particularly important. Conventional techniques are easy to implement but produce oscillations at MPP. The proposed method is applied to a model to simulate the performance of the PV system for solar energy usage, which is compared to the conventional methods under non-uniform insolation improving the PV system utilization efficiency and allowing optimization of the system performance. The modified perturb and observe sliding mode controller successfully overcomes the issues presented by non-uniform conditions and tracks the global MPP. Compared to MPPT techniques, the proposed technique is more efficient; it produces less oscillation at MPP in the steady state, and provides more precise tracking.

• 한국정보시스템학회지:정보시스템연구
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• 제19권4호
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• pp.253-270
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• 2010

The adjustment of negative emotions in later life is related to the quality of life and life satisfaction. any studies have examined how to control the negative emotions in related to physical, psychological, and social relationships. As the digital media and contents positively influence elder's mental and somatic well-being, it is significant to examine this problem from IT usage, especially the selection of digital contents. This study validated the theoretical study through a qualitative exploratory study comprising both negative emotions and the selection of digital contents, and empirically tested the proposed research model on the older people. The result shows the pattern of linkages between the grief of loss and the pursuit of digital contents. Loss from being parted by death and loss of relations was positively related to the information seeking contents. Economical loss and loss of physical functions was positively related to the innovation seeking contents. Loss of physical functions and Loss from being parted by death was positively related to the emotion seeking contents. And economic loss and loss of relations was positively related to the entertainment seeking contents.

• 한국정보통신학회논문지
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• 제2권4호
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• pp.583-592
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• 1998

본 논문은 비동기 전송모드에서 중첩 입력하는 서로 다른 속도의 트래픽에 대한 데이타 처리를 셀의 손실 면에서 분석한 것이다. 멀티미디어 데이타를 대상으로 할 중첩 입력 프로세서의 트래픽 제어로서 사용감시제어를 대상으로 하였으며 Leaky-Bucket 알고리즘의 발생-소멸 프로세서를 이용 셀 손실률을 계산하였다. 해석결과는 버퍼용량의 증가에 대하여 셀 손실률이 현격하게 감소하는 결과를 보였으며 셀 손실률은 유한용량 버퍼에 대한 토큰풀의 특성을 고려하여 2-state MMPP(Markov Modulated Poisson Process) 입력 프로세서를 가정하였다. 해석 값을 검증하기 위해 SIMSCRIPT II.5를 사용하여 시뮬레이션을 하였으며 on/off 입력소스와 비교하였다.

• International Journal of Aeronautical and Space Sciences
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• 제18권4호
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• pp.709-718
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• 2017

This paper proposes the guidance laws for an agile turn of air-to-air missiles during the initial boost phase. Optimal solution for the agile turn is obtained based on the optimal control theory with a simplified missile dynamic model. Angle-of-attack command generating methods for completion of agile turn are then proposed from the optimal solution. Collision triangle condition for non-maneuvering target is reviewed and implemented for update of terminal condition for the agile turn. The performance of the proposed method is compared with an existing homing guidance law and the minimum-time optimal solution through simulations under various initial engagement scenarios. Simulation results verify that transition to homing phase after boost phase with the proposed method is more effective than direct usage of the homing guidance law.

• 융합보안논문지
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• 제14권2호
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• pp.3-9
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• 2014

VOD 서비스는 디지털케이블과 IPTV의 가입자 수가 증가하면서 방송사업자들의 주요 수익모델로 자리 잡고 있으며 방송사업자, 통신사업자, 단말기 제조사들이 추진하고 있는 N-스크린 서비스의 핵심 전략으로 부상하고 있다. 이런 배경 속에 디지털방송 사업자들은 자신의 VOD 서비스를 더욱 활성화하기 위해 사용자의 만족도가 높은 VOD 모바일 서비스 제공에 노력하고 있다. 본 논문은 N-스크린 전략을 통해 VOD 서비스를 활성화 하고자 하는 국내 모(某) 디지털 케이블 방송사업자의 요구사항을 기반으로 개발된 VOD 모바일 앱을 소개한다. 본 VOD 모바일 앱은 방송사업자가 발간하는 VOD 가이드북과 연계된 프로모션 기능, 찜하거나 검색한 VOD 프로그램을 TV로 바로 시청할 수 있는 기능, 스마트폰으로 촬영한 동영상을 TV로 시청할 수 있는 기능 등을 제공한다.