• Proceedings of the Korean Nuclear Society Conference
• /
• 1997.05a
• /
• pp.219-226
• /
• 1997

This paper presents the development of an Integrated Test Facility (ITF) that consists of a full-scope Human Machine Simulator (HMS) and some experimental measurement systems. This facility is aimed to experiment with tile design of the control room environment and the human interaction as it relates to the control of advanced nuclear power plants.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.04a
• /
• pp.916-919
• /
• 2017

최근 딥러닝의 발달로 인해 Sentiment analysis분야에서도 다양한 기법들이 적용되고 있다. 이미지, 음성인식 분야에서 높은 성능을 보여주었던 Convolutional Neural Networks (CNN)은 최근 자연어처리 분야에서도 활발하게 연구가 진행되고 있으며 Sentiment analysis에도 효과적인 것으로 알려져 있다. 기존의 머신러닝에서는 lexicon을 이용한 기법들이 활발하게 연구되었지만 word embedding이 등장하면서 이러한 시도가 점차 줄어들게 되었다. 그러나 lexicon은 여전히 sentiment analysis에서 유용한 정보를 제공한다. 본 연구에서는 SemEval 2017 Task4에서 제공한 Twitter dataset과 다양한 lexicon corpus를 사용하여 lexicon을 CNN과 결합하였을 때 모델의 성능이 얼마큼 향상되는지에 대하여 연구하였다. 또한 word embedding과 lexicon이 미치는 영향에 대하여 분석하였다. 모델을 평가하는 metric은 positive, negative, neutral 3가지 class에 대한 macroaveraged F1 score를 사용하였다.

• Proceedings of the KIEE Conference
• /
• 1999.07c
• /
• pp.1475-1477
• /
• 1999

The setting of protective relays, which is critical to the system security, requires a huge volume of data and a lot of repetitive calculations. Therefore computerization of this process, named PROSET2000 is in progress in KEPCO. PROSET2000 is based on a power system protection database. The database must accomodate a variety of protective device data efficiently, which need be viewed and updated with ease. This paper suggests several database management functions for PROSET2000.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2015.04a
• /
• pp.108-111
• /
• 2015

아직까지도 도서 구매자의 대다수는 도서를 구매할 시 오프라인 서점을 이용하며, 외부 의견은 도서 구매 결정에 커다란 영향을 마치는 것으로 나타났다. 이에 따라 대표적 외부 의견인 도서의 리뷰를 가공 분석하여 제공하는 모바일 기반의 시스템의 필요성이 대두되었다. 하지만 현재 마켓에 등록된 애플리케이션의 대다수는 도서에 대한 사용자의 리뷰를 제공하지 않거나 분류 분석되지 않은 상태의 리뷰를 제공한다. 따라서 본 논문에서는 각 도서의 리뷰를 수집하여 리뷰의 긍정 부정적 감정 추이를 분석하고 그 결과를 리뷰 핵심어에 따라 분류된 도서 평가 기준 별로 제공하며 이를 통해 사용자의 도서 구매 결정과 여러 도서간의 도서 선택에 도움을 줄 수 있는 모바일 애플리케이션을 설계하였다.

• Electronics and Telecommunications Trends
• /
• v.36 no.2
• /
• pp.56-64
• /
• 2021

Many computer vision algorithms are computationally expensive and require a lot of computing resources. Recently, owing to machine learning technology and high-performance embedded systems, vision processing applications, such as object detection, face recognition, and visual inspection, are widely used. However, on-devices need to use their resources to handle powerful vision works with low power consumption in heterogeneous environments. Consequently, global manufacturers are trying to lock many developers into their ecosystem, providing integrated low-power chips and dedicated vision libraries. Khronos Group-an international standard organization-has released the OpenVX standard for high-performance/low-power vision processing in heterogeneous on-device systems. This paper describes vision libraries for the embedded systems and presents the OpenVX standard along with related trends for on-device vision system.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2021.11a
• /
• pp.9-12
• /
• 2021

현대 사회에서 극심한 스트레스로 고통을 호소하는 사람들이 많아짐에 따라 효과적인 스트레스 측정 시스템의 필요성이 대두되었다. 본 연구에서는 영상 속 인물의 표정과 음성 감성 분석을 통한 통합 스트레스 분석 시스템을 제안한다. 영상 속 인물의 표정과 음성 감성 분석 후 각 감성값에서 스트레스 지수를 도출하고 정량화한다. 표정과 음성 스트레스 지수로 도출된 통합 스트레스 지수가 높을수록 스트레스 강도가 높음을 증명하였다.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.67 no.4
• /
• pp.285-295
• /
• 2022

The trapping efficacy of five commercially available sex pheromones manufactured in Korea, the Netherlands, North America, China, and Costa Rica was evaluated to determine the population dynamics of Spodoptera frugiperda and Mythimna loreyi and their relationships with the weather parameters of maize fields in Miryang, Gyeongnam Province, Korea in 2019. The results show that the sex pheromone manufactured in Costa Rica were more efficient at capturing S. frugiperda and M. loreyi than those manufactured in other countries. The lowest number of S. frugiperda moths were captured using sex pheromones manufactured in the Netherlands. We noted that more than four population peaks of both the moth species and weather parameters influenced the moth population dynamics in Miryang. A positive relationship was observed between the population of S. frugiperda and weather parameters, such as mean temperature, rainfall, and relative humidity, for sex pheromones manufactured in Korea. Furthermore, a positive relationship was recorded between the population of M. loreyi and wind speed for the sex pheromone manufactured in Korea. The results of this study suggest that the sex pheromones manufactured in Costa Rica are the best solution for the efficient capture of S. frugiperda and M. loreyi under typical weather conditions in the southern parts of Korea. In addition, the outcomes of this study are discussed in terms of population dynamics and integrated pest management for S. frugiperda and M. loreyi as alternatives to chemical management by maize producers. Further studies related to the continuous improvement in the capture efficiency of both moth species using sex pheromones are now needed.

• Journal of Naturopathy
• /
• v.8 no.2
• /
• pp.71-77
• /
• 2019

Purpose: The purpose of this study was to investigate the far-infrared emissivity of patented ocher quilt cotton fabrics and to investigate the microorganisms that survived the washing of cotton fabrics up to 20 times. Methods: A 16S rRNA assay was performed using a far-infrared radiometer and a single colony in which microorganisms grew in nutrient media. Results: The far-infrared emissivity of ocher quilt was 0.902 (90.2%) at 5~20 ㎛ at 40℃, and the radiation energy was 3.63 × 10² w/m². The number of viable cells was 2.0 × 10² cells/ml in ocher duvet cotton fabric, and no viable bacteria found in regular cotton fabric. The base sequence of 16S rRNA of B-2 strain isolated into single colonies was 1,419 bases, and the base sequence of strain A-4 was 1,284 bases. The base sequence of 16S rRNA of these two strains showed high homology with Bacillus spp. The B-2 bacteria showed high homology with 99.0% of the 16S rRNA sequence of B. aryabhattai EF114313 and 99.0% of the A-4 bacteria of B. bingmayongensis AKCS01000011. Consequently the colony strain B-2 finally identified as B. aryabhattai BJ-2 and A-4 as B. bingmayongensis BJ-4 strain. Concusions: Soil Bacillus strains survived in ocher quilt cotton fabric after 20 washing. The material can be useful because quilt cotton fabric emits a large amount of far-infrared and far-infrared radiation energy.

• IEMEK Journal of Embedded Systems and Applications
• /
• v.11 no.2
• /
• pp.97-105
• /
• 2016

Microcontrollers (MCUs) for endpoint smart sensor devices of internet-of-thing (IoT) are being implemented as system-on-chip (SoC) with on-chip instruction flash memory, in which user firmware is embedded. MCUs directly fetch binary code-based instructions through bit-line sense amplifier (S/A) integrated with on-chip flash memory. The S/A compares bit cell current with reference current to identify which data are programmed. The S/A in reading '0' (erased) cell data consumes a large sink current, which is greater than off-current for '1' (programmed) cell data. The main motivation of our approach is to reduce the number of accesses of erased cells by binary code level transformation. This paper proposes a built-in write/read path architecture using binary code inversion method based on hot-spot region detection of instruction code access to reduce sensing current in S/A. From the profiling result of instruction access patterns, hot-spot region of an original compiled binary code is conditionally inverted with the proposed bit-inversion techniques. The de-inversion hardware only consumes small logic current instead of analog sink current in S/A and it is integrated with the conventional S/A to restore original binary instructions. The proposed techniques are applied to the fully-custom designed MCU with ARM Cortex-M0$^{TM}$ using 0.18um Magnachip Flash-embedded CMOS process and the benefits in terms of power consumption reduction are evaluated for Dhrystone$^{TM}$ benchmark. The profiling environment of instruction code executions is implemented by extending commercial ARM KEIL$^{TM}$ MDK (MCU Development Kit) with our custom-designed access analyzer.

• Journal of Ginseng Research
• /
• v.46 no.2
• /
• pp.304-314
• /
• 2022

Background: Ginsenosides are biologically active components of ginseng and have various functions. In this study, we investigated the immunomodulatory activity of a ginseng product generated from ginseng powder (GP) via enzymatic bioconversion. This product, General Bio compound K-10 mg solution (GBCK10S), exhibited increased levels of minor ginsenosides, including ginsenoside-F1, compound K, and compound Y. Methods: The immunomodulatory properties of GBCK10S were confirmed using mice and a human natural killer (NK) cell line. We monitored the expression of molecules involved in immune responses via enzyme-linked immunosorbent assay, flow cytometry, NK cell-targeted cell destruction, quantitative reverse-transcription real-time polymerase chain reaction, and Western blot analyses. Results: Oral administration of GBCK10S significantly increased serum immunoglobulin M levels and primed splenocytes to express pro-inflammatory cytokines such as interleukin-6, tumor necrosis factor-α, and interferon-γ. Oral administration of GBCK10S also activated NK cells in mice. Furthermore, GBCK10S treatment stimulated a human NK cell line in vitro, thereby increasing granzyme B gene expression and activating STAT5. Conclusion: GBCK10S may have potent immunostimulatory properties and can activate immune responses mediated by B cells, Th1-type T cells, and NK cells.