• Title/Summary/Keyword: shores

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A New Genus and Two New Species of Copepoda(Poecilostomatoida, Sabelliphilidae) Associated with the Tubicolous Polychaetes in the Yellow Sea

  • Hoi, I-I
    • Animal cells and systems
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    • v.5 no.1
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    • pp.1-9
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    • 2001
  • Terebelliphilus simplex n. gen., n. sp. and Myxomolgus invulgus n. sp. are described from the tubicolous polychaetes found in the intertidal shores in the Yellow Sea. The new genus Terebelliphilus belongs to the family Sabelliphilidae but is characteristic in bearing the reduced segmentations In legs 1-4, an unusual sexual dimorphism in antennule, and the ventral location of genital areas. Myxomolgus invulgus is readily distinguishable from its congeners by the morphological features of rostrum, antennule, mandible, maxilla, leg 4 and female leg 5.

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Zygomolgus dentatus n. sp. (Copepoda, Poecilostomatoida, Lichomolgidae) from Korea, with Synonymization of the Genus Lichomolgides with Zygomolgus

  • Kim, Il-Hoi
    • Animal cells and systems
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    • v.10 no.3
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    • pp.169-173
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    • 2006
  • Zygomolgus dentatus n. sp. is described based on specimens from washings of compound ascidians from intertidal shores of Korea. It possesses the long caudal rami which are 5.6 times as long as their width, four scales on the convex side of mandible, and three setal elements and a large process on maxillule. Lichomolgides cuanensis Gotto, the only representative of the genus Lichomolgides, is transferred to the genus Zygomolgus.

Spatial Distribution and Community Structure of Macrobenthos on the Sandy Shore of Anmyeondo, Korea (안면도 사질 조간대에 서식하는 대형저서동물의 공간분포 및 군집구조)

  • Jung, Yun-Hwan;Yoon, Kon-Tak;Park, Heung-Sik;Ma, Chae-Woo
    • Ocean and Polar Research
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    • v.35 no.1
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    • pp.27-37
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    • 2013
  • The western coast of Anmyeondo is open toward the Yellow sea and the northern and southern coasts are sandy and have simple coastlines. In this study, we investigated the spatial distribution and community structure of the macrobenthos that inhabit the sandy shore of Anmyeondo. For the study, we chose 8 sites encompassing 44 stations. In total, we have recorded 62 species, and collected 747 inds./$m^2$ on average. Zonation pattern did not appear because the mean grain size and organic contents of the study sites were similar among the macrobenthos. Polychaetes were most frequently recorded, but amphipods appeared in higher mean density. Macrobenthic community is classified into 3 groups largely based on the density difference among the dominant species and the groups were not influenced by environmental factors. The aggregated distribution of macrobenthos did not show a clear regional spatial difference but exhibited classification pattern emphasizing the density difference of the dominant species. The sandy shores of Anmyeondo are relatively more influenced by waves compared to other regions and the sediment moves more due to strong winds, etc. at low tide. We presume that the movement of sediment resulted in a relatively even sedimentary environment and consequently weakened environmental variables that change with the tide level. We concluded that the macrobenthic community does not show the zonation pattern in the sandy shores of Anmyeondo due to such influences.

Distribution and Strandings of Endangered Sea Turtles in Korean Waters (한국 연안의 멸종위기 바다거북의 분포 및 좌초 현황)

  • Moon, Dae-Yeon;Jung, Min-Min;An, Yong-Rock;Choi, Seok-Gwan;Oh, Bong-Se;Kim, Zang-Geun;Lee, Chu;Kim, Moon-Jin;Kim, Sam-Yeon
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.42 no.6
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    • pp.657-663
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    • 2009
  • This paper reports the strandings of sea turtles on Korean shores monitored for the first time in 2008. A total of 19 sea turtles, consisting of 12 greens and 7 loggerheads, were recorded as stranded from the east coast to the south including Jeju Island. Reported strandings reached a peak in July and dominant area was Jeju Island. The curved carapace length of loggerhead sea turtles ranged 65-84.2cm and that of green sea turtles ranged 39.2-90cm, indicating most of them were immature to sub-adult. Out of 19 turtles, 11 were found dead with unknown reasons. Possible causes of death may include drawning by fishing gear, swallowing of marine debris, boat collision, and diseases. An immature green sea turtle tagged with a satellite transmitter spent winter near Jeju Island where it was released, suggesting that the Island provide immature greens a feeding ground. Considering thousands of sea turtles crawl on Japanese shores for nesting every year, the number of sea turtles reported in Korean waters was relatively small. Therefore, it is suggested that an appropriate monitoring system be necessary to protect and conserve endangered sea turtle species in Korean waters.

Summer Seaweed Flora and Community Structure of Uninhabited Islands in Goheung, Korea (한국 고흥군 무인도서 하계 해조상 및 해조류 군집구조)

  • Song, Ji-Na;Park, Seo-Kyoung;Heo, Jin-Suk;Kim, Bo-Yeon;Yoo, Hyun-Il;Choi, Han-Gil
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.44 no.5
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    • pp.524-532
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    • 2011
  • The intertidal benthic macroalgal floras of 19 uninhabited islands were investigated in the Goheung area, South Sea, Korea, in June 2008. Seaweed community structures on the rocky shores of four (Naemaemuldo, Ceoldo, Araedombaeseom, and Jinjioedo) of the 19 islands were also examined. Eighty macroalgal species were identified, including 13 green, 19 brown, and 48 red algae. The maximum number of species was found at Naemaemuldo, with 35 species, and the minimum was at Aredombaeseom, with 21 species. Seaweed biomass ranged from 21.39-76.22 g dry wt/$m^2$, with a maximum at Naemaemuldo, and minimum at Jinjioedo. Sargassum thunbergii was a representative species, distributed widely in the intertidal zone of the four islands. Subdominant seaweeds were Corallina pilulifera and Ulva pertusa at Naemaemuldo and Jinjioedo, respectively. Also, Ishige okamurae was dominant at Ceoldo and Araedombaeseom. Six functional seaweed forms were found at each study site, except for Araedombaeseom, which had four functional groups. On the rocky shores of the four sites, a coarsely-branched form was the most dominant functional group ranging from 44.44-61.90% in species number and 72.42-91. 09% in biomass. In conclusion, among the four study sites, the shore of Naemaemuldo Island had the best ecological status, with the highest number of species, and greatest biomass (mainly brown and red algae) and functional form diversity of seaweeds. Furthermore, on the rocky shore of Naemaemuldo, coarsely branched- and joint calcareous-form seaweeds, which grow in clean and undisturbed environmental conditions, were the representative functional forms.

Macroalgal Community Structure on the Rocky Shores of Ongdo, Jusamdo, and Woejodo Islands of the Yellow Sea, Korea

  • Heo, Jin-Suk;Park, Seo-Kyoung;Yoo, Hyun-Il;Song, Ji-Na;Kim, Bo-Yeon;Choi, Han-Gil
    • Fisheries and Aquatic Sciences
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    • v.14 no.4
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    • pp.389-397
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    • 2011
  • The benthic algal community structures of the seaweed biomass, vertical distribution of dominant seaweeds, and species composition were examined on the rocky shores of Ongdo, Jusamdo, and Woejodo Islands, Korea, in August 2006. A total of 68 seaweeds were identified, comprising 5 green, 11 brown, and 52 red algae from the three study sites. The number of species at Ongdo (32 species) was less than that at Jusamdo (45 species) and Woejodo (44 species). Jusamdo exhibited the maximum seaweed biomass (73.99 g dry $wt/m^2$), while the minimum value was found at Woejodo (36.90 g dry $wt/m^2$). On the three islands, coarsely branched forms were the most dominant functional group in terms of species number and biomass among benthic algal species. The dominant species were Gelidium amansii, Chondrus ocellatus, and Chrysymenia wrightii at Ongdo, Sargasum thunbergii, Ulva pertusa, and Sargassum fusiformis at Jusamdo, and U. pertusa, Undaria pinnatifida, and Corallina pilulifera at Woejodo. Perennial seaweeds were abundant at Ongdo (G. amansii and C. ocellatus) and Jusamdo (S. thunbergii and S. fusiformis), whereas the sheet form of U. pertusa was relatively abundant at Woejodo Island.

A Study on Kanga Fundanental Notion of Apparel Widely Throughout East Africa (동(東)아프리카 지역(地域)에서 광범위(廣範圍)하게 착용(着用)하는 Kanga개념(槪念) 연구(硏究))

  • Kang, Eun-Sook
    • Journal of Fashion Business
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    • v.8 no.4
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    • pp.104-116
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    • 2004
  • Kanga is a type of cotton clothes with splendid patterns that East African women throw on their bodies. It first appeared in the East African shores in the mid-nineteenth century. A new style of squared handkerchiefs brought to Africa by Portuguese merchants for the first time was referred as to leso of which early designs were in a basic form of white dots on dark background. Consumers called such material by kanga as they began mentioning its craftiness and comparing its elegant nature to a sociable red rooster and graceful feathers. From the early 1990s, Swahili characters have been embroidered in designs of kanga, mainly consisted of proverbs. Kenya's kanga products are widely known and well represented whereas Tanzania makes the best use of it for political and social events. Fascinating and practical kanga has established its position as an essential part of East African cultures that is being well received as a fashion style there in these days.

First Record of Platorchestia monodi (Crustacea: Amphipoda: Talitridae) from the Pacific Region

  • Kim, Min-Seop;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • v.27 no.3
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    • pp.205-212
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    • 2011
  • Platorchestia monodi (Mateus et al., 1986), the beach hopper, commonly lives in sea shores and was previously reported only from the Atlantic regions, such as Mid-Atlantic islands, Brazilian coast, and Israel. We present the first record of this species in the Pacific region. The present species can be clearly distinguished from related species by the shapes of gnathopods 1-2 and development of sexual dimorphism in antenna 2 and pereopod 7. Descriptions of the diagnostic characteristics of the species are provided on the text. In addition, this paper also provided the partial sequence of the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene of the species for its molecular characteristics.

People Detection Algorithm in the Beach (해변에서의 사람 검출 알고리즘)

  • Choi, Yu Jung;Kim, Yoon
    • Journal of Korea Multimedia Society
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    • v.21 no.5
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    • pp.558-570
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    • 2018
  • Recently, object detection is a critical function for any system that uses computer vision and is widely used in various fields such as video surveillance and self-driving cars. However, the conventional methods can not detect the objects clearly because of the dynamic background change in the beach. In this paper, we propose a new technique to detect humans correctly in the dynamic videos like shores. A new background modeling method that combines spatial GMM (Gaussian Mixture Model) and temporal GMM is proposed to make more correct background image. Also, the proposed method improve the accuracy of people detection by using SVM (Support Vector Machine) to classify people from the objects and KCF (Kernelized Correlation Filter) Tracker to track people continuously in the complicated environment. The experimental result shows that our method can work well for detection and tracking of objects in videos containing dynamic factors and situations.

Reshoring effects on deflections of multi-shored flat plate systems under construction

  • Kang, Su-Min;Eom, Tae-Sung;Kim, Jae-Yo
    • Structural Engineering and Mechanics
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    • v.45 no.4
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    • pp.455-470
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    • 2013
  • RC flat plates that have no flexural stiffness by boundary beams may be governed by a serviceability as well as a strength condition. A construction sequence and its impact on the distributions of construction loads among slabs tied by shores are decisive factors influencing immediate and long term performances of flat plate. Over-loading and tensile cracking in early-aged slabs significantly increase the deflection of a flat plate system under construction. A reshoring work may be helpful in reducing slab deflections by controlling the vertical distributions of construction loads in a multi-shored flat plate system. In this study, a change of construction loads by reshoring works and its effects on deflections of flat plate systems under construction are analyzed. The slab construction loads with various reshoring schemes are defined by a simplified method, and the practical calculation of slab deflections with considering construction sequences and concrete cracking effects is applied. From parametric studies, the reshoring works are verified to reduce construction loads and slab deflections.