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Use of ultrasonography for improving reproductive efficiency in cows II. Comparative evaluation of ovarian structures using ultrasonography and plasma progesterone analysis in subestrous dairy cows (초음파 진단장치를 이용한 축우의 번식효율증진에 관한 연구 II. 무발정 젖소에서 초음파검사 및 progesterone 농도측정에 의한 난소 구조물의 비교평가)

  • Son, Chang-ho;Kang, Byong-kyu;Choi, Han-sun;Kang, Hyun-gu;Paik, In-seok;Suh, Guk-hyun
    • Korean Journal of Veterinary Research
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    • v.38 no.3
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    • pp.642-651
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    • 1998
  • The accuracy of ultrasonography for determining the presence of a functional corpus luteum in subestrous dairy cows was investigated, using a radioimmunoassay for progesterone in plasma. Luteal status (high or low progesterone concentrations) was diagnosed in 534 cows, using B-mode transrectal ultrasonography. Accuracy of ultrasonography was 96.3% and 88.8% in the cows with and without functional corpus luteum, respectively. In 362 cows diagnosed with functional corpus luteum by ultrasonographic examination, 20 cows were diagnosed with the non-functional corpus luteum by analysis of plasma progesterone concentrations (false positive). In 172 cows with non-functional corpus luteum by ultrasonographic examination, 13 cows were diagnosed with the functional corpus luteum based on plasma progesterone assay (false negative). Most of the corpus luteum with well-defined border and homogeneous echotexture were diagnosed with functional corpus luteum. All cows that were not detected a corpus luteum by ultrasonographic examination were diagnosed as non-functional corpus luteum. The corpus luteum of cows that were diagnosed with false positive appeared homogeneous echotexture and above 15 mm in diameter, but the corpus luteum was the non-functional corpus luteum within Day 5 (Day 0 is ovulation day) or after Day 19. The corpus luteum of cows that were diagnosed with false negative appeared heterogeneous echogenicity and below 15 mm in diameter, but the corpus luteum was the functional corpus luteum after Day 5 or around Day 17. It was concluded that accuracy of ultrasonography was excellent for determining the presence of a functional corpus luteum in subestrous dairy cows. The corpus luteum that was diagnosed with false positive or false negative was the developing or regressing states. Thus, ultrasonography was required a serial examination of two or three times accurately diagnosing these corpus luteum.

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The Statistical Relationship between Linguistic Items and Corpus Size (코퍼스 빈도 정보 활용을 위한 적정 통계 모형 연구: 코퍼스 규모에 따른 타입/토큰의 함수관계 중심으로)

  • 양경숙;박병선
    • Language and Information
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    • v.7 no.2
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    • pp.103-115
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    • 2003
  • In recent years, many organizations have been constructing their own large corpora to achieve corpus representativeness. However, there is no reliable guideline as to how large corpus resources should be compiled, especially for Korean corpora. In this study, we have contrived a new statistical model, ARIMA (Autoregressive Integrated Moving Average), for predicting the relationship between linguistic items (the number of types) and corpus size (the number of tokens), overcoming the major flaws of several previous researches on this issue. Finally, we shall illustrate that the ARIMA model presented is valid, accurate and very reliable. We are confident that this study can contribute to solving some inherent problems of corpus linguistics, such as corpus predictability, corpus representativeness and linguistic comprehensiveness.

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A Study on the Male Vowel Formants of the Korean Corpus of Spontaneous Speech (한국어 자연발화 음성코퍼스의 남성 모음 포먼트 연구)

  • Kim, Soonok;Yoon, Kyuchul
    • Phonetics and Speech Sciences
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    • v.7 no.2
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    • pp.95-102
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    • 2015
  • The purpose of this paper is to extract the vowel formants of the ten adult male speakers in their twenties and thirties from the Korean Corpus of Spontaneous Speech [4], also known as the Seoul corpus, and to analyze them by comparing to earlier works on the Buckeye Corpus of Conversational Speech [1] in terms of the various linguistic factors that are expected to affect the formant distribution. The vowels extracted from the Korean corpus were also compared to those of the read Korean. The results showed that the distribution of the vowel formants from the Korean corpus was very different from that of read Korean speech. The comparison with English corpus and read English speech showed similar patterns. The factors affecting the Korean vowel formants were the interviewer sex, the location of the target vowel or the syllable containing it with respect to the phrasal word or utterance and the speech rate of the surrounding words.

A Study on the Melanin Synthesis Inhibition and Whitening Effect of Bombysis Corpus (백강잠의 멜라닌 생성 억제와 미백효과에 관한 연구)

  • Oh, Han-Cheol;Lim, Kyu-Sang;Hwang, Chung-Yeon;Youn, In-Hwan;Kim, Nam-Kwen
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.20 no.3
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    • pp.1-13
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    • 2007
  • Objective : This study was performed to assess the whitening effect of Bombysis Corpus on melanin synthesis. Methods : The whitening effects of Bombysis Corpus were examined by in vitro melanin production assay. We assessed inhibitory effects of Bombysis Corpus on melanin-release from B16F10, on melanin production in B16F10, on mushroom tyrosinase activity in vitro, on tyrosinase activity in B16F10, effect of Bombysis Corpus on the expression tyrosinase, TRP-1, PKA, ERK-1 ERK-2, AKT-1, MITF in B16F10. Results : 1. Bombysis Corpus inhibited melanin-release, melanin production in B16F10. 2. Bombysis Corpus inhibited tyrosinase activity in vitro and in B16F10. 3. Bombysis Corpus suppressed the expression of tyrosinase, TRP-1 in B16F10. 4. Bombysis Corpus suppressed the expression of PKA in B16F10. 5. Bombysis Corpus suppressed the expression of ERK-1, ERK-2, AKT-1 in B16F10. 6. Bombysis Corpus suppressed the expression of MITF in B16F10. Conclusion : The study shows that Bombysis Corpus inhibited melanin production on the melanogenesis.

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『Asia Pacific Journal of Corpus Research』 (1 권 1 호의 연구 동향과 연구 방법에 관한 고찰)

  • Jung, Chae Kwan
    • Asia Pacific Journal of Corpus Research
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    • v.1 no.1
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    • pp.127-132
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    • 2020
  • The purpose of this review is to provide local readers, more specifically, Korean student readers who are not all that familiar with the English language a general overview of research articles that have been published in Asia Pacific Journal of Corpus Research vol. 1, no. 1. A brief summary of each research article focusing on research methods and then followed by an overall review and some insights on research issues will be presented.

Synthetic Speech Quality Improvement By Glottal parameter Interpolation - Preliminary study on open quotient interpolation in the speech corpus - (성대특성 보간에 의한 합성음의 음질향상 - 음성코퍼스 내 개구간 비 보간을 위한 기초연구 -)

  • Bae, Jae-Hyun;Oh, Yung-Hwa
    • Proceedings of the KSPS conference
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    • pp.63-66
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    • 2005
  • For the Large Corpus based TTS the consistency of the speech corpus is very important. It is because the inconsistency of the speech quality in the corpus may result in a distortion at the concatenation point. And because of this inconsistency, large corpus must be tuned repeatedly One of the reasons for the inconsistency of the speech corpus is the different glottal characteristics of the speech sentence in the corpus. In this paper, we adjusted the glottal characteristics of the speech in the corpus to prevent this distortion. And the experimental results are showed.

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A clinical Study on 2 Cases of Hemorrhagic Corpus Luteal Cyst (출혈성 황체 낭종 치험례)

  • Park, Kyung-Mi
    • The Journal of Korean Obstetrics and Gynecology
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    • v.27 no.4
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    • pp.121-132
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    • 2014
  • Objectives: The purpose of this study is to report the effects of herbal medicine on corpus luteum and luteal hemorrhage. Ovulation is a physical event and hemorrhage from corpus luteum is known to occur in reproductive age group women. Life threatening hemorrhage requires surgical intervention and blood transfusion. Methods: The patients of this study are 34-year-old and 16-year-old females. They were diagnosed as the hemorrhagic corpus luteal cyst. Two patients was advised to be operated beacause of rupture possibility. They were treated by traditional Korean Medicine, herbal medicine (Bokryungdosu-tang), acupuncture and moxibustion. Results: After the treatment, the patients recovered their condition. One patient was diagnosed with disappearance of existing corpus luteum, the other was relieved of heavy abdominal pain, vaginal discharge and lumbago. Conclusions: Thess cases show that traditional Korean treatment might be effective on corpus luteum and luteal hemorrhage.

Lessons from Developing an Annotated Corpus of Patient Histories

  • Rost, Thomas Brox;Huseth, Ola;Nytro, Oystein;Grimsmo, Anders
    • Journal of Computing Science and Engineering
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    • v.2 no.2
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    • pp.162-179
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    • 2008
  • We have developed a tool for annotation of electronic health record (EHR) data. Currently we are in the process of manually annotating a corpus of Norwegian general practitioners' EHRs with mainly linguistic information. The purpose of this project is to attain a linguistically annotated corpus of patient histories from general practice. This corpus will be put to future use in medical language processing and information extraction applications. The paper outlines some of our practical experiences from developing such a corpus and, in particular, the effects of semi-automated annotation. We have also done some preliminary experiments with part-of-speech tagging based on our corpus. The results indicated that relevant training data from the clinical domain gives better results for the tagging task in this domain than training the tagger on a corpus form a more general domain. We are planning to expand the corpus annotations with medical information at a later stage.

An Algorithm for Predicting the Relationship between Lemmas and Corpus Size

  • Yang, Dan-Hee;Gomez, Pascual Cantos;Song, Man-Suk
    • ETRI Journal
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    • v.22 no.2
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    • pp.20-31
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    • 2000
  • Much research on natural language processing (NLP), computational linguistics and lexicography has relied and depended on linguistic corpora. In recent years, many organizations around the world have been constructing their own large corporal to achieve corpus representativeness and/or linguistic comprehensiveness. However, there is no reliable guideline as to how large machine readable corpus resources should be compiled to develop practical NLP software and/or complete dictionaries for humans and computational use. In order to shed some new light on this issue, we shall reveal the flaws of several previous researches aiming to predict corpus size, especially those using pure regression or curve-fitting methods. To overcome these flaws, we shall contrive a new mathematical tool: a piecewise curve-fitting algorithm, and next, suggest how to determine the tolerance error of the algorithm for good prediction, using a specific corpus. Finally, we shall illustrate experimentally that the algorithm presented is valid, accurate and very reliable. We are confident that this study can contribute to solving some inherent problems of corpus linguistics, such as corpus predictability, compiling methodology, corpus representativeness and linguistic comprehensiveness.

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Differential diagnosis of ovarian cysts and selection of therapeutic drugs in slaughtered cows (도축우 유래 난소낭종의 감별진단 및 치료제 선택)

  • 박상국;최동식;박장일;정대영
    • Korean Journal of Veterinary Service
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    • v.23 no.2
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    • pp.125-132
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    • 2000
  • To establish the differential diagnosis and treatment method in bovine ovarian cysts, specially ovarian cysts with corpus luteum, serum progesterone ($P_4$) concentration and ultrasonography for measuring the cystic wall thickness and diameter of cyst and corpus luteum were investigated from slaughtered cows with ovarian cysts. Ovarian cysts were classified 8 types by the number of cyst, cystic wall thickness and present of corpus luteum. Ovarian cysts with corpus luteum were 11 (13.6%) of 81 cows and ovarian cysts without corpus luteum were 70 (86.4%) cows. The incidence rates of 8 various types of ovarian cysts were as follows; 2Ba 33.3%, 2Aa 25.9% and 2Bb 14.8%, respectively The Incidence rates of ovarian cysts without corpus luteum were follicular cyst 59.2% and luteal cyst 27.2%. The cystic wall thickness were 2Ab 3.7mm and 2Bb 3.5mm, and the serum P4 concentrations were above 2.0 ng/$m\ell$ in IAa, tAb, IBa, 2Ab and 2Bb, respectively In ovarian cysts with corpus luteum, the correlation coefficients between corpus luteum area and serum $P_4$ concentration were 0.45. In ovarian cysts without corpus luteum, there was significantly positive correlations between cystic wall thickness and serum $P_4$ concentration($r^2$ = 0.54, p<0.01). These results indicate that $PGF_2$$\alpha$ analogues can be choice for treatment of ovarian cysts with corpus luteum and above 3mm the cystic wall thickness because serum $P_4$ concentrations were above 2.0 ng/$m\ell$ in ovarian cysts with corpus luteum and thickened cystic wall. In conclusion, it Is suggested that ultrasonography is useful diagnostic tool for diagnosis and selection of treatment remedy in cystic ovaries of bovine.

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