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First Record of the Frogfishes Antennarius pictus (Antennariidae, Lophiiformes) from Korea (한국산 씬벵이과 어류 1미기록종 Antennarius pictus)

  • Kim, Byung-Yeob;Kim, Maeng-Jin;Song, Choon-Bok
    • Korean Journal of Ichthyology
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    • v.23 no.2
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    • pp.168-171
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    • 2011
  • Two specimens of Antennarius pictus, belonging to the family Antennariidae, were collected from the coastal waters of Jeju Island, Korea. They were characterized by having 7 anal fin rays, 10 pectoral fin rays, 12 dorsal fin rays, 9 caudal fin rays, and second spine of dorsal fin diminishing and curved backwards distally. Since this species has various sizes of round black spots on head, body and fins, we propose a new Korean fish name "Heuk-jum-bak-ssin-beng-i" for A. pictus.

Anatomical Ultrastructure of Spermiogenesis and Spermatozoa of Pseudobagrus fulvidraco (Siluriformes: Bagridae) from Korea (한국산 동자개(Pseudobagrus fulvidraco)의 정세포변형과정과 성숙한 정자의 미세해부학적 구조(Siluriformes: Bagridae))

  • Kim, Kgu-Hwan;Kwon, Deok-Mun
    • Korean Journal of Ichthyology
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    • v.21 no.2
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    • pp.81-86
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    • 2009
  • The spermiogenesis and mature spermatozoa of Pseudobagrus fulvidraco were described by means of scanning and transmission electron microscopy. Spermiogenesis is characterized by lateral development of the flagellum, nuclear rotation, deep nuclear fossa formation and compaction into thick granules. The spermatozoa exhibit a round head containing a nucleus that lacks an acrosome, and having a midpiece and a flagellum. The midpiece is small and has a short cytoplasm including several mitochondria separated from the tail by the cytoplasmic canal. The flagellum contains the 9+2 classical axoneme structure and has two axonemal fins. The presence of axonemal fins in the flagellum is a common character in Bagridae. The interrelationships among the Bagridae as well as other teleosts are herein discussed.

A Normal Pregnancy and Delivery by Assisted Activation Following Roundheaded Spermatozoa (Globozoospermia) Injected into Oocytcs (구형정자의 난자내 미세주입 후 보조활성화술에 의한 임신과 분만 1례)

  • Joo, Jae-Hong;Lee, Yong-Chan;Yun, San-Hyun;Im, Jin-Ho;Park, Heum-Dai
    • Clinical and Experimental Reproductive Medicine
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    • v.27 no.3
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    • pp.301-305
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    • 2000
  • Globozoospermia is a rare type of teratozoospermia. It occurs in 0.1% of all andrological patient's and used to be considered sterile. Globozoospermic patient has 100% round headed spermatozoa, but the spermiogram is normal. The spermatozoa show oval-shape head, the lack of a nuclear envelope, acrosome, and post acrosomal sheath. Objective: To report that a couple with infertility secondary to globozoospermia received ICSI treatment. Material and Method: Case report Results: In the first trial, fertilization was failed. In the second trial, 40% of oocytes were fertilized and all of these embryos were cleaved, but pregnancy did not achieved. In the third trial, sperm injected oocytes were exposed to 10 ${\mu}M$ calcium ionophore for 15 min. All of the injected oocytes were fertilized and proceeded to develop. Triplet pregnancy was achieved after the transfer of six embryos in their third cycle. One embryo vanished and the remaining twins (female) were delivered at 33 weeks of gestation by Caesarean section. Conclusion: This result shows that assisted activation following ICSI may overcome infertility associated with globozoospermia.

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Performance Comparison of TCP and SCTP in Wired and Wireless Internet Environment (유무선 인터넷 환경에서 TCP와 SCTP의 성능 비교)

  • Sasikala, Sasikala;Seo, Tae-Jung;Lee, Yong-Jin
    • 대한공업교육학회지
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    • v.33 no.2
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    • pp.287-299
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    • 2008
  • HTTP is one of the most widely used protocols of the WWW. Currently it uses TCP as the transport layer protocol to provide reliability. The HTTP uses separate TCP connection for each file request and adds unnecessary head-of-line blocking overhead for the file retrieval. The web application is short sized and affected by the increased handover latency of TCP in wireless environment. SCTP has attractive features such as multi-streaming and multi-homing. SCTP's multi-streaming and multi-homing avoid head-of-line blocking problem of TCP and reduce handover latency of TCP in wired and wireless environment. Mean response time is the important measure in most web application. In this paper, we present the comparison of mean response time between HTTP over SCTP with that of HTTP over TCP in wired and wireless environments using NS-2 simulator. We measured mean response time for varying packet loss rate, bandwidth, RTT, and the number of web objects in wired environment and mean response time and packet loss rate for varying moving speed and region size in wireless environment. Our experimental result shows that SCTP reduces the mean response time of TCP based web traffic.

A Study of Costumes of the 18th Century, Appearing in Genre Paintings from the King Young-Cho Period to the King Jung-Cho Period: Focused upon the Works of Focused upon the Works of Mung-Hyun Oho, Yong Yun, In-Sang Lee, Hee-Eon Kang (영ㆍ정조 시대의 속화에 나타난 18C 복식에 관한 연구 -오명현, 윤용, 이인상, 강희언, 작품을 중심으로-)

  • 최은주
    • The Research Journal of the Costume Culture
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    • v.12 no.5
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    • pp.859-879
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    • 2004
  • As a result of research, the characteristics of the general costumes from the king Young-Cho period to the king Jung-Cho period in Genre Paintings of Mung-Hyun Oho, Yong Yun, In-Sang Lee, Hee-Eon Kang follows. First, the typical man wore his hair in a topknot(sangtu), and put on 'Bung-gu-ji', 'Lip', or a scarf on his head. The length of the 'Jeogori'(Korean traditional jacket) was long enough to cover the waist. Dress for work had side slits, and had half length sleeve Jeogori, and short pants looked like 'Jam-bang-i'. They went barefoot and wore 'Jipsin'(Korean traditional straw shoes). Dress for outdoor was 'Po' that knot at front of chest by band. 'Baji'(slacks) were with knot below knee, worn 'Hang-jun'(ankle band) and the width of slacks was suitable. They were 'Beoseon'(Korean traditional socks) and shoes. Second those in the upperc1ass and those in the military put on 'Mang-geon', 'Gat', 'Sa-bang-gan', 'Tang-geon', 'Bok-geon' on their head on a topknot. Most of them wore 'So-chang-i', 'Jung-chi-mag' or 'Do-po'. The length of Jeogori covered the waist or the hip and were tied with 'Go-rum'(ribbon). Baji was tied with Hang-jun and 'Dae-nim'. The waist of the slacks were tied with a dark colored waist-band and folded down their waist of slacks. They wore white color Beoseon and 'Hye' or dark color leather shoes. They wore 'Sup'(assistant of arm) for bow. It showed the lifestyle of the 18C with fan, 'Be-ru', 'Mug', 'Yun-jug', teacup, pot, etc. Third, child's hair was short or knotted to the back of the head. The length of Jeogori reached waist line, Git of Jeogori was 'Dunggurai-Kit'(shape of round) and other style Jeogori, which reached the hip line, had side-slit. Baji was tied with Dae-nim, and the width of the slacks is suitable. They hang 'Yum-nang'(Pocket). Final, most women worked outdoors wearing their hair in a high twisted style, or covered it with scarf. They wore Jeogori and 'Chima'(Korean traditional skirts), Bagi. They folded up the sleeves of the Jeogori. And they folded the 'Jambang-i-styled' pants to just above the knees, fastening at the waist. When they wore skirts, they also wore underpants under the skirt that went down to the knees. Most of them went barefoot and wore straw shoes, Jipsin. Through genre paintings, we can understand the ways and forms of our ancestor's clothing. And with our understanding, interest, and passion, we can be familiar with Hanbok in our daily life by succeeding and creating its peculiar style. And then we can promote the globalization of Hanbok.

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A Study of Practical Strategies for Cooperative Rural Community Regeneration in Geochang (거창군 협업형 마을만들기 실천전략 연구)

  • Oh, Hyung-Eun
    • Journal of the Korean Institute of Landscape Architecture
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    • v.43 no.5
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    • pp.87-99
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    • 2015
  • Prior hardware-centered rural development projects implemented top-down rural community regeneration via the local government in accordance with central government agency policies. To improve this, software-centered projects have been promoted since 2000. With central agency-led rural development projects changing into local government-led ones, rural community regeneration has been built per village. Although rural community regeneration projects appear to have implemented a bottom-up development currently, the top-down development procedures being facilitated by the intervention of administrative institutions have not disappeared. In this regard, the purpose of this research thesis is to effectively perform bottom-up development methods that go one step further from the current process of rural community regeneration. As the research site, this thesis selected Geochang, which has difficulties in being steadily maintained and operated despite the development of various rural community regeneration projects. Subsequently, it determined the current status and substantial analysis of a project of the rural community regeneration in Geochang through 1:1 interviews with civil servants in charge of administration as well as conducted a prior study on rural resident awareness of rural community regeneration through a survey of village head members and in-depth interviews with rural residents. Based on these data, a 10 times-round table conference was held under the participation of pertinent civil servants, professionals and rural residents to select practical strategies for cooperative rural community regeneration in Geochang as five key areas: local food, culture & welfare, rural villages, community development, and urban and rural interchanges. In addition, it is considered that the project of building villages must be implemented by establishing steadfast administrative co-operation systems, strengthening rural residents' participation capacities and supporting professionals' systemic integrated operation and maintenance. By doing so, this research thesis sought to determine practical strategies in the cooperative rural community regeneration in Geochang. It is expected that bottom-up development rural community regeneration will be built and introduced in each rural community in the future.

Himasthla kusasigi(Tremtoda, Echinostomatidae) recovered from the Intestine of the Dunlin, Calidris alpina sakhalina, in Korea (한국산 민물도요(Calidris alpina sakhalina)의 장에서 발견된 흡층류 1미기록종(Himasthla kusasigi))

  • 주종필;조유정;유정칠;박성균
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.125-131
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    • 2000
  • This paper deals with the morphology and taxonomy of the first reported species of echinostome belonging to the genus Himasthla Dietz, 1909, found from dunlins (Calidris alpina sakhalina) in Korea. Birds were captured with mist-nets at the tidal flat of Yeochari, Kanghwa-gun, Kyunggi-do, Korea. The worms were removed from avian intestines in physiological saline, fixed, acetocarmine stained and observed. Himasthla kusasigi Yamaguti, which was found in 1939, was characterized morphologically by a long and slender body (5.27 mm in length), besetting with spines and reniform head collar (0.27 mm) in a form of a single and uninterrupted row of 31 spines. The oral sucker (0.057$\times$0.0684 mm) is smaller than the ventral sucker (0.35$\times$0.29 mm). The ventral sucker was close to the anterior extremity of the body. The worm had two elliptical testes (anterior 0.47$\times$0.30 mm, posterior 0.59$\times$0.27 mm). The testes were close to the posterior end of the body. The uterus was very long, winding and extending through at least two thirds of the body length. The ovary (0.13$\times$0.14mm) was round and small. Below the ovary, a round and small seminal receptacle was found.

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Studies on the Forage Production and Utilization on Paddy Field in Korea (한국에 있어서 답리작을 이용한 양질 조사료 생산기술)

  • Seo, Sung;Yook, W.B.
    • Proceedings of the Korean Society of Grassland Science Conference
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    • 2002.09b
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    • pp.5-56
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    • 2002
  • The problems in the current domestic forage production were evaluated, and the prospective improvement was suggested in this paper. Grassland development in forest, production of high quality forages in upland and paddy land, efficient utilization of rice straw, development of new varieties of forages suitable for our environmental conditions and imported forages were described Among them, preferential production and utilization of forages using paddy field after rice harvest . should be enlarged for domestic supply of forages in Korea. Several studies were carried out to select the promising forage crops and barley cultivars for whole crop silage production, to determine productivity, nutritive value and production cost of forages produced in paddy field, and feeding effect of forages with Hanuwoo and milking cow for whole crop silage with forages produced in paddy field, 1999 to 2001, and also discussed restraint factors and activation plans for enlargement of forage production in paddy land. The promising forage crops in paddy field were rye and barley for Middle region, and rye, barley, early maturing Italian ryegrass and wheat for Southern region. The promising barley cultivars for whole crop silage in paddy field were Albori in Suwon, Keunalbori, Milyang 92, Saessalbori, and Naehanssalbori in Iksan, and Keunalbori, Albori, Naehanssalbori, and Saegangbori in Milyang, respectively. Silage production, quality and animal palatability of silage by trench and round bale were also compared. The production yields of whole crop barley silage(WBS) were 17,135kg as a fresh matter, and 6,011kg as a dry matter per ha, and the quality of WBS was 2∼3 grade, while that of rice straw silage was 4 grade as a farm basis. The production cost of WBS per kg was 83won as a fresh matter, and 238won as a dry matter. Feeding of WBS as forages on Hanwoo was very desirable for the improvement of live-weight gain, beef quality and farm income, particularly in growing stage of Hanwoo. Milk production and income were also increased, and feed cost was decreased by feeding of WBS. The daily voluntary intake of WBS in milking cow was 26.3kg as a fresh matter(DM 7.7kg) per head. Milk production when WBS was fed, was very similar to that of imported hay feeding such as Kentucky bluegrass or domestic corn silage. The issues to be solved in near future f3r stable forage production and supply in paddy land are sustainable livestock-forages policy, development & seed production of new varieties of barley, rye, Italian ryegrass and other promising forages, efficient demand & supply system of forages, solidification for mass production and utilization of forages, efficient application management of animal slurry on paddy field considering environmental agriculture/livestock industry, and break k development of bottleneck technique in production field. Domestic production & supply of high cost agricultural machine (round baler, wrapper, handler and so on), plastic wrapping film, and silage additives are also important.

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A Study of Costumes in the Palace Painting Depicting the Worship of Buddha during the Reign of King Myungjong (관중숭불도에 나타난 16세기 복식연구)

  • 홍나영;김소현
    • Journal of the Korean Society of Costume
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    • v.38
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    • pp.305-321
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    • 1998
  • The costume style of the Chosun dynasty changed greatly after Imjinwaeran (the Japanese Invasion of Chosun Korea, 1592∼1598). Most of the extant costumes come from the late Chosun, but some costumes produced be-fore Imjinwaeran have been excavated, and in addition, information on these older constumes is contained in contemporary literature. Of especial value in the study of pre-Imjinwaeran Chosun constumes is a mid-sixteenth century palace painting depicting the worship of Buddha, a painting in the collection of the Ho-Am Art Museum in Seoul. The present study of costume during the middle Chosun dynasty focuses on this painting, and compares it with other contemporary palace paintings, and with other contemporary palace paintings, and with Nectar Ritual Paintings. The following conclusion were drawn : * Concerning woman's hair styles of the time, married women wore a large wig. Un-married women braided their hair, and then either let it fall down their back or wore it coiled on top of their head. * The major characteristic of woman's costumes was a ample, tube-like silhouette, with the ratio of the Jeogori(Korean woman's jacket) and skirt being one-to-one. * The style of Jeogori in the painting was like that of excavated remains. Some Jeogoris were simple (without decoration), while some Jeogoris were worn with red sashes. Here we can confirm the continuity of ancient Korean costumes with those of the sixteenth century * Although the skirt covered the ankles, it did not touch the ground. Because the breadth of the skirt was not wide, it seems to have been for ordinary use. Colors of skirts were mainly white or light blue. * All men in the painting wore a headdress. Ordinary men, not Buddhist monks, wore Bok-du (headstring), Chorip (straw hat), or Heuk-rip (black hat). In this painting, men wore a Heukrip which had a round Mojeong (crown). * The men wore sashes fastened around their waist to close their coats, which was different from the late Chosun, in which men bound their sashes around their chest. That gave a ration of the bodice of the coat to the length of the skirt of one-to-one, which was consistent with that of woman's clothing. * In this painting, we cannot see the Buddhist monk's headdress that appeared later in the Chosun, such as Gokkal (peaked hat), Songnak (nun's hat), and Gamtu (horsehair cap). These kinds of headdresses, which appeared in paintings from the seventeenth century, were worn widely inside or outside the home. Buddhist monks wore a light blue long coat, called Jangsam (Buddhist monk's robe) and wore Gasa (Buddhist monk's cope), a kind of ceremonial wrap, round their body. We can see that the Gasa was very splendid in the early years of the Chosun dynasty, a continuing tradition of Buddhist monk's costumes from the Koryo dynasty.

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심의고(深依考)

  • Kim, In-Suk
    • Journal of the Korean Society of Costume
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    • v.1
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    • pp.101-117
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    • 1977
  • This thesis is a study of the Simui(深衣) system which was a dress regulation peculiar to old China with skirt and coat. The origin of Simui is a very long time, that is, before Ju dynasty in China. Its wearing range had a large circle irrespective of rank and good or bad luck. This was a ordinary dress to the Emperor or the lords, a below court attire or a below sacrificial rites attire to the illustrious officials, and good luck dress to the common people. But this was a funeral rites attire or coming-of-age ceremony attire in domestic behaviour. In the times of Song dynasty, lots of confucian scholars had put on this simui because of Juhi's recommendation for domestic behaviour. This Simui had been put on through all the times of China and was the original text of all the dress. Especially the court attire and silkworm working dress of Empress, and the court attire and underwear court attire of Emperor is also made out of this Simui, therefore this is a origin of the ceremonial dress which formed into long coat. In Korea it is said that this Simui was brought in prior to the middle of Goryeo dynasty. But we can't tell the correct transmitted age. According to the following records in Goryeo History, "King had put on the Simui as a sacrificial rite attire in the times of Yejong". It is sure that this Simui was brought in prior to the times of Yejong. In fact, lots of confucian scholars had put on the Simui since the introduction of confucianism in the end of Goryeo dynasty and after that time this was taken by many confucian scholars through Yi dynasty. Korean Simui system was complied with Chinese system through confucian domestic behaviour, This was respected for court dress of confucian scholars, as it were, Chumri, (an ordinary dress of scholars), Nansam (a uniform of upper student), and Hakchangui (a uniform of confucian student). There are many deta about Simui system in the book of Yeki, chapter Okcho and Simui, and other many canfucian books. But we didn't demonstrate the theory about it till now. Especially there are diversifies of opinions about the phrase of "Sok Im Ku Byun" in Yeki. Simui was cut in separate and then was stitched together in one piece. Generally its shape had round sleeve and angled lapel, its length reaches to the anklebone. And it has a line around the lapel, the sleeve band, and the edge of skirt. It is called Simui because the body can be wrapped deeply in broad width and large sleeve. The Simui was made of white fine linen and was cut by the natural size of body. Every part of Simui had a profound meaning; the round sleeve in compliance with regulation can keep a courtesy when a walker moves his hands and the angled lapel like a carpenter's square in compliance with square keeps them front loosing their Justice and a string of the back also keeps them loosing from their righteousness and the flat lower part of Simui makes their heart and mind calm. This Simui was usually attendant on a head cover and belt made cloth, and black shoes. This thesis was made a study of documents and portrait from Yi dynasty, for the actual object was not obtained.

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