• Smart Structures and Systems
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• 제13권2호
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• pp.219-233
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• 2014

In a companion paper, Pasala and Nagarajaiah analytically and experimentally validate the Adaptive Length Pendulum Smart Tuned Mass Damper (ALP-STMD) on a primary structure (2 story steel structure) whose frequencies are time invariant (Pasala and Nagarajaiah 2012). In this paper, the ALP-STMD effectiveness on a primary structure whose frequencies are time varying is studied experimentally. This study experimentally validates the ability of an ALP-STMD to adequately control a structural system in the presence of real time changes in primary stiffness that are detected by a real time observer based system identification. The experiments implement the newly developed Adaptive Length Pendulum Smart Tuned Mass Damper (ALP-STMD) which was first introduced and developed by Nagarajaiah (2009), Nagarajaiah and Pasala (2010) and Nagarajaiah et al. (2010). The ALP-STMD employs a mass pendulum of variable length which can be tuned in real time to the parameters of the system using sensor feedback. The tuning action is made possible by applying a current to a shape memory alloy wire changing the effective length that supports the damper mass assembly in real time. Once a stiffness change in the structural system is detected by an open loop observer, the ALP-STMD is re-tuned to the modified system parameters which successfully reduce the response of the primary system. Significant performance improvement is illustrated for the stiffness modified system, which undergoes the re-tuning adaptation, when compared to the stiffness modified system without adaptive re-tuning.

• 한국정보통신학회논문지
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• 제25권12호
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• pp.1762-1769
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• 2021

본 연구의 최종 목표는 블랙박스, 스마트폰, CCTV 등으로부터 수집된 영상에서 수배차량이 범죄차량인지 여부를 분석할 수 있는 시스템을 개발하는 것이다. 데이터 수집은 자체 개발된 블랙박스를 이용하였다. 본 연구에 활용된 데이터는 차량 유형 8개(트럭, RV, 승용차, 승합차, SUV, 버스, 스포츠카, 전기차)와 차량 모델 434개 등 총 83,753건의 데이터를 사용하였다. YOLO v5를 이용한 차량인식 결과, mAP가 80%로 나타났다. 자체 개발한 블랙박스를 이용하여 ReXNet으로 차량 모델을 식별한 결과, 정확도는 99%로 나타났다. 이러한 결과는 데이터 라벨링의 정확도를 개선하는 것이 차량인식 성능 향상에 도움이 된다는 것을 의미한다.

• 대한한방내과학회지
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• 제37권1호
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• pp.77-89
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• 2016

Objectives: The aim of this study was to develop a standard instrument of pattern identification and evaluation for chemotherapy-induced peripheral neuropathy (CIPN).Methods: The advisory committee for this study was organized by 12 professors of traditional Korean medicine from the Korean Association of Traditional Oncology. The items and structure of the instrument were designed based on a review of previous publications. We revised the instrument in consultation with the advisory committee and received additional advice via email.Results: We divided the symptoms and signs of CIPN into four pattern identifications: wind arthralgia (風痺), cold arthralgia (寒痺), dampness arthralgia (濕痺), and arthralgia of the deficiency type (虛痺). We obtained the mean weights to reflect the standard deviations from each symptom of the four pattern identifications, which were scored on a 5-point scale by the advisor committee. After we obtained the answers to discrimination between variable symptoms (變症) and ordinary symptoms (素症) from the 12 experts, we gained the final weight from the combination of the ratio of pattern identification to the number of total answers of the advisory committee and the mean weight.Conclusions: The Instrument on Pattern Identification and Evaluation for CIPN was developed through a discussion between 12 experts. There was a limitation that the validity and reliability of this instrument have not been proven. However, the significance of this study was that it is the first Instrument on Pattern Identification and Evaluation aimed at assessing CIPN in traditional Korean medicine.

• 한국자원식물학회지
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• 제34권2호
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• pp.156-165
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• 2021

바이오에너지작물의 중요한 소재를 제공하는 화본과 식물인 홍띠(Imperata cylindrica 'Rubra')의 기내재생 식물체의 유전적 안정성을 조사하고자 생장점 부위를 기내배양하여 재분화시킨 녹색 재생식물체의 변이성을 ISSR 마커로 조사하였다. MS(Murashige and Skoog, 1962) 배지에 식물체 기부의 생장점 부위를 적출하여 캘러스를 유도하고(0.1 mg/L 2,4-D와 2 mg/L BA), 캘러스 증식(0.1 mg/L 2,4-D와 0.05 mg/L BA), 신초 재분화(0.01 mg/L NAA와 2 mg/L BA) 후 MS 배지에서 발근시켜 재분화 식물체를 유도하고 100% 활착시켰다. 대조구인 모식물체 홍띠 8개체, 1년간 노지 포장에서 재배중인 재분화 녹색 식물체 10개체와 실험실 내 화분에서 재배중인 재분화 녹색 식물체 10개체, 총 28개체에 대하여 ISSR 분석한 결과 유전적 다형성은 재분화 식물체가 실내포트 재배식물체 4.1% 및 노지 재배식물체 3.1%로 0%인 대조구보다 높게 나타났다. 또한, 총 28개체들 간의 유전적 유사도를 평가한 결과, 유전적 유사도 지수는 0.919~1.0 사이에 분포하며, 평균 0.972로 유전적 충실도가 높게 나타났다. 군집분석 결과 노지에서 재배한 재분화 식물체와 모식물체(대조군)가 독립적으로 유집되었다.

• Mycobiology
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• 제47권4호
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• pp.368-377
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• 2019

The genus Macrolepiota (Agaricales, Basidiomycota) is easy to recognize at the genus level because of big, fleshy basidiocarps with squamules covering the pileus; a single or double annulus; and big, thick-walled basidiospores with a germ pore. However, morphological identification is often unreliable in Macrolepiota due to similar morphological features among species. Due to the uncertainty of previous morphological identification in the genus Macrolepiota, it is necessary to re-examine Korean Macrolepiota using molecular data. We reexamined 34 Macrolepiota specimens collected from 2012 to 2018 in Korea using a reverse taxonomic approach, whereby species identification was first done based on the internal transcribed spacer (ITS) region analysis, followed by morphological confirmation. We identified the presence of four species: M. detersa, M. mastoidea, M. procera, and M. umbonata sp. nov. Two species (M. detersa and M. mastoidea) were previously unrecorded from Korea and M. umbonata is a new species. Detailed descriptions of all four species and taxonomic key are provided in this study. Macrolepiota procera and M. umbonata are distributed through the country, but M. detersa and M. mastoidea are distributed only in limited areas. According to our results, the combination of ITS locus and morphology proved to be a robust approach to evaluate the taxonomic status of Macrolepiota species in Korea. Additional surveys are needed to verify the species diversity and clarify their geographic distribution.

• 한국식품과학회지
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• 제36권6호
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• pp.851-856
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• 2004

통고추의 열발광 특성(TL)분석에서 2.5 kGy 이상의 조사 시료에서 분리된 미네랄 시료는 $150^{\circ}C$ 부근에서 TL glow curve ($TL_1$)를 나타내었고, 조사선량이 증가할수록 peak intensity가 증가하였다. 재조사(1 kGy) 방법에 의한 TL ratio($TL_1/TL_2$)는 TL 분석의 신뢰도를 높여주었다. DNA comet assay에서 비조사 시료(씨)는 전형적인 intact cell을 나타내었으나 감마선 조사 시료에서는 long tail을 가진 comet을 나타내면서 선량 의존적으로 tail length가 증가되었다. 미생물학적 방법으로써 DEFT/APC값 측정에서는 조사선량에 따라 분말고추와 통고추에서 비교적 높은 상관을 보였다. 이상의 결과에서 DNA comet assay와 DEFT/APC 방법은 방사선 조사 건고추의 screening 방법으로서, TL은 확인방법으로서 적용가능성이 확인되었다.

• 정보보호학회논문지
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• 제18권1호
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• pp.67-75
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• 2008

RFID(Radio frequency Identification) 시스템이란 태그(Tag)와 리더(Reader)가 무선주파수(Radio Frequency)를 이용하여 물리적 접촉 없이 데이터 통신이 가능한 자동 인식 시스템을 말한다. RFID 시스템은 태그에 쓰기(Re-write)가 가능하고 무선공간에서 다수의 태그를 동시에 인식 가능하다는 장점 때문에 바코드 시스템을 대체할 신기술로 주목받고 있다. 그러나 태그와 리더가 무선 주파수를 이용하여 통신하기 때문에 시스템 보안과 개인 프라이버시 침해의 문제를 발생시킨다. 이것을 해결하기 위한 많은 연구가 있었으며 그 결과 다양한 보안 기법들이 제안되었다. 하지만 제안된 많은 보안기법들은 저가 기반의 Gen2 태그에는 적용하기 어렵다. 따라서 본 논문에서는 Gen2기반의 RFID 시스템에 적합한 행렬(matrix)을 이용하여 암호화하는 기법을 제안한다. 그리고 RFID 장비를 사용하여 시뮬레이션을 해봄으로서 제안 기법의 효율성과 안전성을 분석하고 적용 가능한 응용 환경에 대해서 알아본다.

• The Plant Pathology Journal
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• 제39권4호
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• pp.384-396
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• 2023

Colletotrichum acutatum species complex is one of the most important groups in the genus Colletotrichum with a high species diversity and a wide range of host plants. C. acutatum and related species have been collected from different plants and locations in Korea and deposited into the Korean Agricultural Culture Collection (KACC), National Institute of Agricultural Sciences since the 1990s. These fungal isolates were previously identified based mainly on morphological characteristics, and a limitation of molecular data was provided. To confirm the identification of species, 64 C. acutatum species complex isolates in KACC were used in this study for DNA sequence analyses of six loci: nuclear ribosomal internal transcribed spacers (ITS), betatubulin 2 (TUB2), histone-3 (HIS3), glyceraldehyde3-phosphate dehydrogenase (GAPDH), chitin synthase 1 (CHS-1), and actin (ACT). The molecular analysis revealed that they were identified in six different species of C. fioriniae (24 isolates), C. nymphaeae (21 isolates), C. scovillei (12 isolates), C. chrysanthemi (three isolates), C. lupini (two isolates), and C. godetiae (one isolate), and a novel species candidate. We compared the hosts of KACC isolates with "The List of Plant Diseases in Korea", previous reports in Korea and global reports and found that 23 combinations between hosts and pathogens could be newly reported in Korea after pathogenicity tests, and 12 of these have not been recorded in the world.

• 대한한방내과학회지
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• 제45권3호
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• pp.415-428
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• 2024

Objective and Methods: This study examined Cheng Guopeng (程國彭)'s understanding of Shanghan Disease (傷寒病) through <Yixue xinwu (醫學心悟)>, created tables based on this, and these tables were compared with <Shiyong zhongyi neike biaodian (實用中醫內科表典)>'s table on Six Meridian Pattern Identification (六經辨證). Results and Conclusion: 1. <Yixue xinwu> and <Shiyong zhongy neike biaodian> were mostly similar regarding the pathology and the Six Meridian Pattern Identification of Shanghan Disease. However, <Shiyong zhongyi neike biaodian> selected terms that encompass internal medical diseases rather than terms that refer only to infectious diseases. 2. About Taiyang meridian disease (太陽 經病), <Yixue xinwu> recognized the existence of Wen bing (溫病) and Re bing (熱病), but did not regard them as True Shanghan Disease (正傷寒), and differentially diagnosed them as Similar Shanghan Disease (類傷寒). 3. About Yangming meridian disease (陽明 經病), <Yixue xinwu> understood this as a meridian transmitted heat-syndrome in the interior (傳經 裏熱證), and created a new Radix Puerariae Decoction (葛根湯). This prescription has the same name as the <Shanghanlun (傷寒論)>, but it has a different drug composition and indications. 4. About three-In meridian disease (3陰 經病), <Yixue xinwu> always divided it into two categories: meridian transmitted heat-syndrome in the interior (傳經 裏熱證) and meridian stroked cold-syndrome in the interior (直中 裏寒證). However, <Shiyong zhongyi neike biaodian> described Taiin disease (太陰病) as Spleen-stomach deficiency cold-syndrome (脾胃虛寒證). This means that meridian transmitted heat-syndrome in the interior (傳經 裏熱證) does not exist among Taiin disease.

• 식물병연구
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• 제25권4호
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• pp.205-212
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• 2019

Analysis of differentially expressed genes has assisted discovery of gene sets involved in particular biological processes. The purpose of this study was to identify genes involved in appressorium formation in the rice blast fungus Magnaporthe oryzae via analysis of cDNA-amplified fragment length polymorphisms. Amplification of appressorial and vegetative mycelial cDNAs using 28 primer combinations generated over 200 differentially expressed transcript-derived fragments (TDFs). TDFs were excised from gels, re-amplified by PCR, cloned, and sequenced. Forty-four of 52 clones analyzed corresponded to 42 genes. Quantitative real-time PCR showed that expression of 23 genes was up-regulated during appressorium formation, one of which was the MCK1 gene that had been shown to be involved in appressorium formation. This study will be providing valuable resources for identifying the genes such as pathogenicity-related genes in M. oryzae.