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정원복;장권열
- Journal of Sericultural and Entomological Science
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- v.31 no.1
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- pp.20-24
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- 1989
The purpose of this experiment was to obtain the basic information on heterosis and inbreeding depression of quantitative characters in the silkworm by diallel crosses of seven varieties differing widely in each character. Period of 5th instar cocoon weight, cocoon layer weight, cocoon layer ratio, boiling off ratio, raw silk percent, bave length, bave weight, bave size, weight of first molting larva and fourth molting larva were investigated. The results obtained were summarized as follows : The degrees of positive heterosis of cocoon weight and cocoon layer weight were higher. Period of 5th instar and boiling off ratio were negative heterosis. In F1 generation, cocoon weight and bave weight showed positive heterobeltiosis, while fifth instar-period, cocoon layer ratio and boiling off ratio showed negative heterobeltiosis in the F1 and F2 generation. Inbreeding depression was observed in cocoon layer ratio and boiling off ratio.
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Cho, Mi-Hui
- The Journal of the Korea Contents Association
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- v.9 no.1
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- pp.455-464
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- 2009
Based on the observation that Korean speakers of English have difficulties in producing English fricatives, a perception experiment was designed to investigate whether Korean speakers also have difficulties perceiving English labial consonants including fricatives. Forty Korean college students were asked to perform a multiple-choice identification test. The consonant perception test consisted of nonce words which contained English labial consonants [p, b, f, v] in 4 different prosodic locations: initial onset position, intervocalic position before stress, intervocalic position after stress, and final coda position. The general perception pattern was that the mean accuracy rates were higher in strong position like CV and VCVV than in weak position like VC and VVCV. The difficulties in perceiving the English targets resulted mainly from bidirectional manner confusion between stop and fricative across all prosodic locations. The other types of misidentification were due to place confusion as well as voicing confusion. Place confusion was generated mostly by the target [f] in all prosodic position due to acoustic properties. Voicing confusion was heavily influenced by prosodic position. The misperception of the participants was accounted for by phonetic properties and/or the participants' native language properties.
https://doi.org/10.5392/JKCA.2009.9.1.455 인용 PDF

Kim, Cheul;Kim, Young-Jun
- Journal of Oral Medicine and Pain
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- v.31 no.2
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- pp.177-183
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- 2006
The management of refractory pain and limitation of mouth opening in the temporomandibular joint (TMJ) is both challenging and controversial. Arthrocentesis is a simple technique and it can be used instead of more invasive surgical procedures for patients who failed to conventional conservative treatments. The patients in this case report had complained persistent severe pain and restricted mandibular movement of TMJ, although they had been treated with conservative therapy, e.g., stabilization splint therapy, behavioral therapy, physical therapy, pharmacological therapy. Therefore we employed arthrocentesis for these patients, and they showed significant reduction of pain and improvement of mandibular movement after repetitive arthrocentesis. We recommend arthrocentesis as an effective, minimally invasive technique for patients with continuing severe pain and restricted mobility in the TMJ that is unresponsive to conservative management.
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Lee Hyun-Chang
- Journal of the Institute of Electronics Engineers of Korea CI
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- v.43 no.4 s.310
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- pp.31-38
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- 2006
In this paper, the inputting method of english pronunciation for a computer by the combining diacritical mark is studied. English pronunciation system and the methods of its notations are investigated and conditions to input english pronunciations easily are analysed. Therefore, the inputting method which can input 3, 4-level stress as well as 2-level stress is presented. By using this method, English pronunciation can be inputted to the spreadsheets, databases and presentations as well as word-processors, and each application program's data can have compatibility. In the result of experiments, every data can have the compatibility in all of application programs and inputting speed is increased highly compare with using the individual vowel method which has high speed than using the pre-existing functions of word processors.
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