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Maturity and Spawning of Snailfish, Liparis ochotensis (Schmidt), in the East Sea
양재형,이성일,윤상철,김종빈,전영열 한국수산과학회 2010 Fisheries and Aquatic Sciences Vol.13 No.4
Maturity and spawning of the snailfish, Liparis ochotensis was investigated based on samples collected by gill net in the East Sea of Korea from December 2008 to December 2009. The average total length of L. ochotensis was 63.4-cm and 64.1-cm for females and males, respectively. Gonadosomatic index (GSI) began to increase in July, reaching a maximum in November, then began to decrease in December. Monthly changes in the GSI values of L. ochotensis were similar for females and males. Annual reproductive cycle of this species can be divided into five successive stages in females: early growing stage (May), late growing stage (June to July), mature stage (August to September), ripe and spent stage (September to December), and recovery and resting stage (January to April). Males show four successive stages; growing stage (May to July), mature stage (August to September), ripe and spent stage (September to December), and recovery and resting stage (January to April). Relationship between total length (TL) and fecundity (F) was F=0.00003TL4.002 (R2=0.703), and F increased with TL. Total length at 50% group maturity was estimated to be 55.8-cm. Our findings suggest that the spawning period takes place from September to December, with the main spawning period occurring from October to December.
Parsing the Wh-Interrogative Construction in Korean
양재형,김종복 한국언어정보학회 2013 언어와 정보 Vol.17 No.2
Korean is a wh-in-situ language where the wh-expression stays in situ with an obligatory Q-particle marking its interrogative scope. This paper briefly reviews some basic properties of the wh-question construction in Korean and shows how a typed feature structure grammar, HPSG (Pollard and Sag 1994, Sag et al. 2003), together with the notions of ‘type hierarchy’ and ‘constructions’, can provide a robust basis for parsing the wh-construction in the language. We show that this system induces robust syntactic structures as well as enriched semantic representations for real-time applications such as machine translation, which require deep processing of the phenomena concerned.
Age and Growth of Blackfin Flounder Glyptocephalus stelleri in the East Sea, Korea
양재형,윤상철,이성일,차형기,김종빈,최영민,박정호 한국수산과학회 2012 Fisheries and Aquatic Sciences Vol.15 No.2
Age and growth of Glyptocephalus stelleri in the East Sea of Korea were determined, from monthly samples of commercial catches, caught by the eastern sea Danish seine fishery in 2007. The annuli of G. stelleri are formed once a year, with the boundary between opaque and translucent zones forming in September. Relationships between total length (TL) and total weight (TW) were TW=0.002TL3.392 (r2=0.970) for females and TW=0.002TL3.335 (r2=0.961) for males. TLs at annuli formation in otoliths were backcalculated from the otolith-length relationship and were adjusted to von Bertalanffy growth curves to Lt=39.71(1 – exp(-0.152(t+1.156)))for females and Lt=32.16(1 – exp(-0.213(t+0.879))) for males. From the age of 3 yerars, females grew faster than males (P<0.05).
A Multi-center Study for Birth Defect Monitoring Systems in Korea
양재형,김연주,정진훈,김문영,류현미,안현경,한정열,양순하,김암,Kim Hyun Se,Pyo-Jong Lee,Kim SungSoo,김영주,Koh Kyung Sim,신종철,Cho Yong Kun,윤보현 대한의학회 2004 Journal of Korean medical science Vol.19 No.4
The aim of this study was to establish a multi-center birth defects monitoring system to evaluate the prevalence and the serial occurrence of birth defects in Korea. Ten medical centers participated in this program. A trained nurse collected relevant re-cords from delivery units and pediatric clinics in participating hospitals on a monthly basis. We observed 1,537 cases of birth defects among 86,622 deliveries, which included live births and stillbirths. The prevalence of birth defects was 1.8%, and the sex distribution of the birth defect cases was 55.2% male and 41.6% female. The highest proportion of birth defects was in the cardiovascular system (17.5%), followed by birth defects involving in the genitourinary system (15.6%). Chromoso-mal anomalies were detected 30.0 per 10,000 births. Of these chromosomal anoma-lies, Down syndrome was most frequently observed. This study led to an establish-ment of a multi-center active monitoring system for birth defects. To better under-stand the serial occurrence of birth defects in Korea, it is necessary to increase the number of participating hospitals and to launch on a nation-wide multi-center study.