• 한국수정란이식학회지
• /
• 제12권1호
• /
• pp.37-48
• /
• 1997

I. The Factors Influencing In Vivo Embryo Production by Condition of Superovulation Treatment These studies were carried out to establish an effective and practical system for comrnercialization of embryo production techniques by analyzing several factors influencing in vivo embryo production on superovulation treatment in Korean native cattle. In vivo embryos were flushed 226 times from 128 donors.The results obtained from the studies on the factors influencing in vivo embryo production by superovulation treatment were as follows : FSH-P had a significiant advantage(83.0%) over SUPER-OV in the percentage of fertilized embryos(P<0.01). No difference was found loetween FSH-P and SUPER-OV in the percentage of transferable and freezable embryos.2. The response of superovulation by SUPER-OV was greater than that of FSH-P The donors having 8~9 and more than 10 of corpora lutea(CL) derived by FSH-P were 40.0%(most frequent) and 33%, respectively. The donors having more than 12 and 10 CL derived by SUPER -OV were 33.3% (most frequent) and 56.6%, respectively.3. Embryo production after treatment of repeated superovulation was remarkablely decreased at 3rd time by FSH-P but did not differ among 1, 2 and 3rd times by SUPER-OV. Embryo production on intervals of repeated superovulation was significantly different for the number and percentage of fertilized, transferable and free-zable' embryos in FSH-P (P<0.01) and rernarkablely decreased in repeated superovulation of 81~120 interval days. The SUPER-OV showed no differences in interval days of repeated superovulation and was found better than FSH-P in the response of repeated superovulation. (Key words : in Vivo embryo, superovulation, FSH -P, SUPER-OV)

• 대한수의학회지
• /
• 제23권1호
• /
• pp.57-67
• /
• 1983

The present study was carried out to observe the histopathological changes in the mammary gland of lactating rats and rabbits injected with dexamethasone. White rats were intramuscularly injected with 0.25mg, 0.5mg or 1.0mg of dexamethasone sodium phosphate (containing $9{\alpha}$-fluoro-$16{\alpha}$-methylprednisolone, 5.0mg/ml) daily for 3 to 10 days on the 3rd day after parturition and white rabbits were intramammary infused with 4mg or 20mg of dexamethasone daily for 4 days on 7th day after parturition. The histopathological changes of the mammary glands, ovaries and adrenal glands of rats and rabbits were observed with light microscope. In the mammary glands of rats, the microscopic findings encountered were decrease of the milk in the alveolar lumina, necrosis and desquamation of epithelial cells, atrophy of alveoli, proliferation of fibroblasts and thickness of alveolar walls, destruction of alveoli, presence of fat droplets within the glandular epithelial cells, infiltration of mononuclear cells and proliferation of adipose tissue, which were relative to the dose and duration of injection. Especially, in the cases of the administration of large doses or long duration, there were severe fibrosis and focal necrosis of glandular tissue. In the mammary glands of rabbits, the morphological changes were similar to those findings in the rats. The milk in the alveolar lumina was decreased gradually according to the dose and duration of injection, while milk fat concentration regarded to increase. In the histological findings of ovaries, necrosis of granulosa cellos, vacuolization and necrosis of luteal cells, atrophy and necrotic foci in the corpora lutes were observed. In the adrenal glands, hyperemia, hemorrhage, vacuolization of adrenal cortical cells, necrotic foci and atrophy of adrenal cortex were observed.

• 비교문화연구
• /
• 제33권
• /
• pp.331-358
• /
• 2013

This paper looks into several aspects of linguistic behaviors attested in Korean and American English corpora. A special attention is paid to the areas of politeness phenomena, terms of address, power and solidarity, practice of flattery, and closely-related non-linguistic behaviors such as tipping and gift-giving conventions. An analysis of the data reveals that Korean society remains very much superior-oriented, non-egalitarian, non-democratic despite the pride and sense of accomplishment among the populace that the nation has achieved a satisfactory level of democracy. In particular, the following facts in Korean and the Korean society are exposed by an examination of the data: ${\bullet}$ There is a notional gap of positive politeness ${\bullet}$ Superiors enjoy an unfair advantage in the power and solidarity system ${\bullet}$ The terms of address system is set up to make a clear distinction between levels and the terms of address, in turn, dictate norms of expected behavior ${\bullet}$ The notion and practice of flattery heavily favors superiors ${\bullet}$ Non-linguistic acts of gift-giving and tipping are consistent with the examined social interactions As a result, all the benefits, emotional as well as material, are garnered by superiors. These facts may reflect the real Korea that people are used to being comfortable with, a pre-modern, feudalistic society, something akin to its kin in the north. We may proclaim that we aspire to a more democratic society. However, it appears Koreans, deep inside, may have been seeking a powerful dictator all along. These findings help provide a partial but insightful clue to the political puzzle: why Koreans grew uncomfortable with an egalitarian and democratic president and could not save him, but instead replaced him with a succession of a corrupted businessman and the authoritarian daughter of a former dictator. The flight to democracy has stalled in midair, not quite making the grade yet. There is plenty of linguistic evidence in Korean.

• 한국어교육
• /
• 제28권3호
• /
• pp.53-83
• /
• 2017

The goal of this study is to examine whether the genre characteristics of newspaper articles are appropriately reflected in Korean language textbooks. For the purpose of this study, two corpora were built with 17 textbook articles and 60 newspaper articles respectively. The average sentence length and frequency of vocabulary in each corpus were measured. It was found that the sentences of articles in textbooks tended to have longer sentence length and more complicated structures than the articles in newspapers. For instance, sentences in the textbook articles had more verbal endings, such as conjunctive and transforming endings. On the other hand, in case of vocabulary representing 'timeliness', there was a high frequency of adverbs and nouns which were related to year, month, and time in actual articles, while it is found to be very limited in textbooks. Also, typical translative styles such as '-ko itta', '-e ttareumyun' were more prominent in textbooks than in newspaper articles. In the case of abbreviated and omitted form of particles, this was a characteristic that appeared only in actual articles because of the constraint of space. It is significant that this paper offers suggestions for the development of reading materials for Korean language education by revealing that the genre typology of actual newspaper articles is not adequately reflected in current textbooks.

• 한국수정란이식학회지
• /
• 제33권4호
• /
• pp.305-311
• /
• 2018

Gonadotropin releasing hormone (GnRH) centrally plays a role in control of the hypothalamic-pituitary-gonadal axis-related hormone secretions in the reproductive neuroendocrine system. In addition, hormone receptors like luteinizing hormone receptor (LHR) are important element for hormones to take effect in target organ. However, ageing-dependent changes in terms of the distribution of GnRH neurons in the brain and LHR expression in the acyclic ovary have not been fully understood yet. Therefore, we comparatively investigated those ageing-dependent changes using young (1-5 months), middle (11-14 months) and old (21-27 months) aged female mice. Whereas a number of GnRH positive fibers and neurons with monopolar or bipolar morphology were abundantly observed in the brain of the young and middle aged mice, a few GnRH positive neurons with multiple dendrites were observed in the old aged mice. In addition, acyclic ovary without repeated development and degeneration of the follicles was shown in the old aged mice than others. LHR expression was localized in theca cells, granulosa cell, corpora lutea and atretic follicle in the ovaries from young and middle aged mice, in contrast, old aged mice had few positive LHR expression on the follicles due to acyclic ovary. However, the whole protein level of LHR was higher in the ovary of old aged mice than others. These results are expected to be used as an important basis on the relationship between GnRH and LHR in old aged animals as well as in further research for reproduction failure.

• 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
• /
• 한국정보과학회언어공학연구회 2020년도 제32회 한글 및 한국어 정보처리 학술대회
• /
• pp.304-309
• /
• 2020

본 연구에서는 한국어 전자사전 DECO(Dictionnaire Electronique du COreen)와 다단어(Multi-Word Expressions: MWE) 개체명을 부분 패턴으로 기술하는 부분문법그래프(Local-Grammar Graph: LGG) 프레임에 기반하여 반자동으로 개체명주석 코퍼스 DecoNAC을 구축한 후, 이를 개체명 분석에 활용하고 또한 기계학습에 필요한 도메인별 학습 데이터로 활용하는 DecoNERO 개체명인식 플랫폼을 소개하는 데에 목적을 두었다. 최근 들어 좋은 성과를 보이는 것으로 보고되고 있는 기계학습 방법론들은 다양한 도메인을 기반으로한 대규모의 학습데이터를 필요로 한다. 본 연구에서는 정교하게 설계된 개체명 사전과 다단어 개체명 시퀀스에 대한 언어자원을 바탕으로 하는 반자동으로 학습데이터를 생성하는 방법론을 제안하였다. 본 연구에서 제안된 개체명주석 코퍼스 DecoNAC 기반 접근법의 성능을 실험하기 위해 온라인 뉴스 기사 텍스트를 바탕으로 실험을 진행하였다. 이 실험에서 DecoNAC을 적용한 경우, KoBERT 모델만으로 개체명을 인식한 결과에 비해 약 7.49%의 성능향상을 기대할 수 있음을 확인하였다.

• Journal of Animal Science and Technology
• /
• 제65권5호
• /
• pp.922-938
• /
• 2023

The current study was designed to evaluate the effect of sequential low and high dietary linseed oil (LO; as omega-3 enriched fatty acid; FA) before and post insemination, respectively, on different plasma variables of ewes. Fat-tailed Qezel ewes were assigned randomly to be fed a diet enriched with 3% LO (n = 30) or the saturated FA (SFA; n = 30) three weeks before insemination (Day 0). The lipogenic diet supplemented with 6% LO or SFA was fed after insemination until Day +21. The control ewes were fed an isocaloric and isonitrogenous diet with no additional FA during the study. Estrus was synchronized by inserting a vaginal sponge (Spongavet^®) for 12 days + 500 IU equine chorionic gonadotropin (eCG; Gonaser^®), and ewes were inseminated via laparoscopic approach 56-59 h after eCG injection. The size of ovarian structures was assessed by transvaginal ultrasonography at -21, -14, -2, 0, and +10 days. Blood samples were collected weekly to measure the plasma's different biochemical variables and FA profile. Treatment did not affect the amounts of glucose, aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, interleukin-10, interleukin-2, and non-esterified FA (p > 0.05). Conversely, concentrations of triglyceride, cholesterol, tumor necrosis factor-alpha, and insulin-like growth factor-1 were higher in SFA-fed ewes relative to control animals (p < 0.05). LO feeding resulted in greater amounts of n-3 FA isomers in plasma, while higher amounts of stearic acid were detected in SFA fed group 0 and +21 (p < 0.05). The number of ovarian follicles and corpora lutea also were not affected by treatment. Other reproductive variables were not affected by treatment except for the reproductive rate. It seems that LO or SFA feeding of fat-tailed ewes peri-insemination period was not superior to the isocaloric non-additional fat diet provided for the control group during the non-breeding season.

• International Journal of Computer Science & Network Security
• /
• 제24권2호
• /
• pp.113-123
• /
• 2024

Stock market news sentiment analysis (SA) aims to identify the attitudes of the news of the stock on the official platforms toward companies' stocks. It supports making the right decision in investing or analysts' evaluation. However, the research on Arabic SA is limited compared to that on English SA due to the complexity and limited corpora of the Arabic language. This paper develops a model of sentiment classification to predict the polarity of Arabic stock news in microblogs. Also, it aims to extract the reasons which lead to polarity categorization as the main economic causes or aspects based on semantic unity. Therefore, this paper presents an Arabic SA approach based on the logistic regression model and the Bidirectional Encoder Representations from Transformers (BERT) model. The proposed model is used to classify articles as positive, negative, or neutral. It was trained on the basis of data collected from an official Saudi stock market article platform that was later preprocessed and labeled. Moreover, the economic reasons for the articles based on semantic unit, divided into seven economic aspects to highlight the polarity of the articles, were investigated. The supervised BERT model obtained 88% article classification accuracy based on SA, and the unsupervised mean Word2Vec encoder obtained 80% economic-aspect clustering accuracy. Predicting polarity classification on the Arabic stock market news and their economic reasons would provide valuable benefits to the stock SA field.

• 한국전자통신학회논문지
• /
• 제19권4호
• /
• pp.701-708
• /
• 2024

딥러닝 분야에서 트랜스포머 아키텍쳐의 출현은 자연어 처리 연구가 획기적인 발전을 가져왔다. 개체명 인식은 자연어 처리의 한 분야로 정보 검색과 같은 태스크에 중요한 연구 분야이다. 생의학 분야에서도 그 중요성이 강조되나 학습용 한국어 생의학 말뭉치의 부족으로 AI를 활용한 한국어 임상 연구 발전에 제약이 되고 있다. 본 연구에서는 한국어 생의학 개체명 인식을 위해 새로운 생의학 말뭉치를 구축하고 대용량 한국어 말뭉치로 사전 학습된 언어 모델들을 선정하여 전이 학습시켰다. F1-score로 선정된 언어 모델의 개체명 인식 성능과 태그별 인식률을 비교하고 오류 분석을 하였다. 인식 성능에서는 KlueRoBERTa가 상대적인 좋은 성능을 보였다. 태깅 과정의 오류 분석 결과 Disease의 인식 성능은 우수하나 상대적으로 Body와 Treatment는 낮았다. 이는 문맥에 기반하여 제대로 개체명을 분류하지 못하는 과분할과 미분할로 인한 것으로, 잘못된 태깅들을 보완하기 위해서는 보다 정밀한 형태소 분석기와 풍부한 어휘사전 구축이 선행되어야 할 것이다.

• 한국동물학회지
• /
• 제16권1호
• /
• pp.25-41
• /
• 1973

昆蟲의 알라타體의 호르몬 生産과 그 構造的變化를 밝히기 위하여 松蟲을 對象으로 變態 各時期의 알라타腺細胞의 微細構造의 變化를 電子顯微鏡으로 追究했다. 미토콘드리아는 越冬에서 最終齡幼蟲까지와 용화 直後에서 20日용 까지는 活動相을 보이는 反面 營繭期부터 용화 直前의 전용까지는 不活性相을 보인다. 알라타體의 변두리 細胞는 幼蟲期 특히 越冬幼蟲에서는 滑成小胞體의 液胞속에 電子密度가 높은 顆粒을 가졌고 管狀粗性小胞體의 一端이 膨張하여 굵은 滑性小胞體의 液胞로 되며 그中 얼마는 纖維性蛋白質을 含有한다. 한편 두 細胞사이의 空腔에도 液胞가 나타나는데 그들은 서로 融合하여 커지지만 이들 兩者는 용화 直前에 없어진다. 그러나 용화후 細胞質內液胞는 다시 나타나므로 分泌活動은 再開된다고 생각된다. 알라타體에 와있는 軸索속에 神經分泌顆粒이 羽化直前인 20日용부터 5日되는 成蟲까지에서만 나타난다는 事實은 알라타體의 分泌가 이 時期에는 腦의 支配下에 있음을 알려주고 幼蟲期부터 早期용까지는 그런 顆粒이 나타나지 않으므로 그 分泌가 腦와는 아무런 關係가 없음을 意味한다. 3日 되는 成蟲에서 電子密度가 높은 顆粒이 細胞質속 核부근의 큰 液胞속에 나타나고 그 液胞는 數와 크기가 增加하므로 核은 5日成蟲에서 畏縮한다. 이것은 아마 腺細胞의 機能退化相일 것으로 생각된다. 따라서 알라타體는 호르몬 生産과 그 分泌機構에서 볼 때 年齡에 따라 적어도 두가지 호르몬 卽最終齡幼蟲까지 腦의 直接的刺戟없이 幼若호르몬을, 그다음 늦은 용기부터 成蟲까지 腦의 刺戟을 받아서 生殖腺刺戟호르몬을 分泌한다고 보며8 老熟幼蟲에서 전용까지에 觀察되는 分泌相은 아마 ecdysone에 의한 蛋白質合成과 관계가 있을 것이고 또 腦의 支配下에 있지 않는 早期용 에서의 分泌相은 前胸腺刺戟活動과 관계있을 것으로 생각된다.