• 대한임베디드공학회논문지
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• 제17권4호
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• pp.199-208
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• 2022

Korean is an agglutinative language, and one or more morphemes are combined to form a single word. Part-of-speech tagging method separates each morpheme from a word and attaches a part-of-speech tag. In this study, we propose a new Korean part-of-speech tagging method based on the Head-Tail tokenization technique that divides a word into a lexical morpheme part and a grammatical morpheme part without decomposing compound words. In this method, the Head-Tail is divided by the syllable boundary without restoring irregular deformation or abbreviated syllables. Korean part-of-speech tagger was implemented using the Head-Tail tokenization and deep learning technique. In order to solve the problem that a large number of complex tags are generated due to the segmented tags and the tagging accuracy is low, we reduced the number of tags to a complex tag composed of large classification tags, and as a result, we improved the tagging accuracy. The performance of the Head-Tail part-of-speech tagger was experimented by using BERT, syllable bigram, and subword bigram embedding, and both syllable bigram and subword bigram embedding showed improvement in performance compared to general BERT. Part-of-speech tagging was performed by integrating the Head-Tail tokenization model and the simplified part-of-speech tagging model, achieving 98.99% word unit accuracy and 99.08% token unit accuracy. As a result of the experiment, it was found that the performance of part-of-speech tagging improved when the maximum token length was limited to twice the number of words.

• 한국정보통신학회논문지
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• 제15권8호
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• pp.1756-1763
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• 2011

본 연구에서는 생물학적 모방에 따른 물고기 로봇의 직진유영에 관한 연구로써, Liu 등이 제안한 꼬리 모션 함수를 푸우리에 급수 전개의 7차 항까지 고려한 제안된 방법과 일반적인 사인함수만으로 근사한 방법과 비교하여 모의실험 하였다. 일반적으로 로봇 물고기의 꼬리 링크의 길이가 길어지고 링크가 많을 경우, 로봇 물고기의 꼬리 모션 함수의 말단 회전 관절 궤적은 사인 함수의 모양과 매우 다르다. 그러므로 로봇 물고기의 꼬리 궤적을 단순한 푸우리에 급수 전개의 기본파 성분만으로 근사하기에는 문제가 있다. 제안된 방법과 일반적인 사인함수만으로 근사한 방법의 모의실험 결과 제안된 방법이 로봇 물고기의 추력과 속도에서 10%정도 뛰어남을 보였다.

• Ocean Science Journal
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• 제41권4호
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• pp.201-205
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• 2006

Larval specimens of Halicampus punctatus were collected off Ulsan and Uljin in December 2002 (three specimens) and off Ulsan in December 2003 (one specimen). These specimens are characterized by the following morphological characteristics: rings, 14 + 35 = 49; subdorsal rings, 1 + 3 = 4; dorsal fin rays, 19 - 20; pectoral fin rays, 14 - 15; anal fm rays, 9; head length (HL), 5.8 - 6.7 in the standard length; snout length, 1.9 in HL; snout depth, 3.7 - 5.2 in snout length. The number of caudal fin rays 9 is less than those of the other species in the same genus 10. Wide stripe bands composed of small pigments are shown in the trunk and the tail. Melanophores are not found in the dorsal fin, the pectoral fin, and the anal fin except the caudal fin. The supraoccipital crest is on the head. The frontal ridge is on the dorsal side of front trunk. The blanched ridges on the opercular are fused with a main ridge like a tree branch. A few branched ridges that are small and narrow on the trunk and the tail are fused with the main ridges. We report these specimens as the first record in Korea and name them 'Byeol-sil-go-ki' in Korean.

• Asian-Australasian Journal of Animal Sciences
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• 제28권3호
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• pp.311-317
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• 2015

Phenotypic characterization and body biometric in 13 traits (height at withers, body length, chest girth, paunch girth, ear length, tail length, length of tail up to switch, face length, face width, horn length, circumference of horn at base, distances between pin bone and hip bone) were recorded in 233 adult Gojri buffaloes from Punjab and Himachal Pradesh states of India. Traits were analysed by using varimax rotated principal component analysis (PCA) with Kaiser Normalization to explain body conformation. PCA revealed four components which explained about 70.9% of the total variation. First component described the general body conformation and explained 31.5% of total variation. It was represented by significant positive high loading of height at wither, body length, heart girth, face length and face width. The communality ranged from 0.83 (hip bone distance) to 0.45 (horn length) and unique factors ranged from 0.16 to 0.55 for all these 13 different biometric traits. Present study suggests that first principal component can be used in the evaluation and comparison of body conformation in buffaloes and thus provides an opportunity to distinguish between early and late maturing to adult, based on a small group of biometric traits to explain body conformation in adult buffaloes.

• Preventive Nutrition and Food Science
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• 제7권3호
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• pp.323-326
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• 2002

Ionizing radiation can be used to sanitize herbs contaminated by various microorganisms. However, health concerns related to irradiation damage to complex molecules in plants necessitate that methods be developed to monitor such damage. To elucidate DNA damage of herbs caused by irradiation, the DNA comet assay was used for Astragalus membranaceus Bunge and Havenia dulcis Thumb, irradiated at 1, 5, 7, and 10 kGy. With increasing irradiation doses, the tails of comets became longer with average tail length increasing from 17 (non-irradiated) to 124 (10 kGy) $\mu$m in Astragalus membranaceus Bunge. Above 7 kGy, some of the tails were separated from the heads of comets. Distribution patterns of the tail length of In comets selected randomly in the irradiated herbs were analyzed to quantify the DNA damage. These results clearly suggest that the DNA comet assay is an effective and inexpensive tool for the detection of irradiation damage to DNA in herbs.

• 한국수산과학회지
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• 제50권5호
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• pp.589-593
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• 2017

A single specimen of Kentrocapros flavofasciatus (measuring 145.9 mm in length) belonging to the family Aracanidae, order Tetraodontiformes, was collected for the first time in 2017 on Jeju Island, Korea. This specimen had isolated bony plates on a caudal peduncle, a carapace with six ridges, and a tail depth equal to its tail length. It is similar to K. aculeatus and K. rosapinto but differs from K. aculeatus in that its carapace is without spines; it differs from K. rosapinto in that the anterior end of its gill opening does not reach below the center of its eye. We propose new Korean names: Yug-gak-bok-gwa for the family Aracanidae, and Hwang-Jul-yug-gak-bok for the species K. flavofasciatus.

• Parasites, Hosts and Diseases
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• 제43권2호
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• pp.51-55
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• 2005

The autoinfective filariform larva of Strongyloides stercoralis causes hyperinfection in immunosuppressed hosts. Here we report on the case of a male patient who was admitted to the emergency room at Gwangju Veterans Hospital with a complaint of dyspnea, and who was receiving corticosteroid therapy for asthma. Many slender larvae of S. stercoralis with a notched tail were detected in Papanicolaou stained sputum. They measured $269\pm21.2{\mu}m$ in length and $11\pm0.6{\mu}m$ in width. The esophagus extended nearly half of the body length. The larvae were identified putatively as autoinfective third-stage filariform larvae, and their presence was fatal. The autoinfective filariform larva of S. stercoralis has not been previously reported in Korea.

• 한국동물학회지
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• 제28권1호
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• pp.9-20
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• 1985

태백산, 월악산, 팔공산 및 청주지역에서 채집한 등줄쥐, Apodemus agrarius coreae를 사용하여 형태적 형질의 단변량분석 (univariate analysis)과 다변량분석 (multivariate analysis)을 행하였다. 채집된 표본들은 서로 유사하여 동일아종임이 재입증되었다. 표본이 채집되었던 지역의 고도와 연관된 clinal variation이 discriminant analysis의 제일축(first axis)과 꼬리의 길이(length of tail vertebrae)에서 나타났다.

• The Journal of Korean Physical Therapy
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• 제9권1호
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• pp.89-96
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• 1997

The purpose of this study was to determine the effect of Ga-Al-As (Gallium-Aluminum-Arsenid) laser radiation on the tail-flick latency in rat. Thirty Sprague-Dawley male and female rats Were divided into five groups : that is control, laser 15sec radiation, laser 30sec radiation, laser 60sec radiation, and Tramadol Hcl injection groups. The continuous Ga-Al-As laser with, wave length 780-830nm and diameter of probe in the 3mm, averse output of 100mw radiation was applied to the meridian point(Gv 1 : Governing vessel) of the rats. Tail-flick latency were measured with hot plate at $55^{\circ}C$ : before treatment and immediately, 30 minutes, 1 hour, 2 hours, 24 hours, 24 hours and 48 hours after treatment. The result were as follows ; 1. The tail-flick latency according to time varition, control group was not significance. 2. The tail-flick latency according to time varition, laser 15 sec irradiate rats in post-treared was significance(P<0.05). 3. The tail-flick latency according to time varition, laser 30 sec irradiate rats group was not significance. 4. The tail-flick latency according to time varition, laser 60 sec irradiate rats in post 30 minute was significance(P<0.05). 5. The tail-flick latency according to time varition, Tramadol Hcl injection rats in post-treated (P<0.05), post 30 minute(P<0.05), post 60 minute (P<0.01) and 2 hour(P<0.05) was significance. This study suggest that Ga-Al-As (Gallium-Aluminum-Arsenid) laser applied to meridian point of the rat with 15 sec, 30 sec, and 60 set radiation could induc no analgesic effect, but Tramadol Hcl injection rat is good analgesic effect.

• 한국통신학회논문지
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• 제26권9B호
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• pp.1329-1335
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• 2001

부호화 시스템의 성능 분석은 일반적으로 BER(Bit Error Rate)을 이용하여 이루어지는데, 많은 시간을 요하는 정확한 BER을 구하는 대신 근사치인 상한값(upper bound)을 이용하는 경우도 많다. 그러므로 실제 값과 가까운 BER 상한값을 구하는 것은 중요한 일이다. 터보부호의 경우 테일 비트(tail bit)에 의한 영향이 무시되는 블록 길이가 긴 경우[1]에 BER 상한값이 보고되었다. 그러나 테일 달기(tail terminating) 기법을 사용하면서 블록 길이가 짧을 경우 추가되는 테일 비트가 BER 상한값에 미치는 영향은 무시할 수 없게 된다. 따라서 본 논문에서는 테일비트를 고려한 터보부호의 BER 상한값 계산 방법을 제시한다. 그리고 테일 달기 기법보다 복잡하지만 테일 비트가 없으므로 블록 길이가 짧은 경우 효율적으로 사용될 수 있는 테일 물기(tail-biting) 기법을 이용하느 터보부호의 BER 상한값 계산 방법도 제시한다.