• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.8 s.179
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• pp.2065-2073
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• 2000

In this paper, we present a wall climbing robot whose gate pattern takes after those of specialized climbing animals such as spiders. Characteristic features of the biological locomotion are partly realized in the design of the mechanism. The robot has two legs and a trunk. Each one-dof leg with suction pads is driven by a motor which employs a closed loop linkage mechanism, and the trunk with suction pads steers the whole body of the robot using a motor. By generating adequate trajectories of the leg and simultaneously alternating the suction pattern between the legs and the trunk, we can achieve the spider like motion. The proposed idea is implemented in a robot and some tests are performed to evaluate its performance.

• Journal of Forest and Environmental Science
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• v.30 no.1
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• pp.30-35
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• 2014

Arctosa yasudai (Tanaka, 2000) and Pardosa isago Tanaka, 1977 belonging to Lycosidae were captured by pitfall trap in rice field and apple orchard during the intensive survey of arthropod fauna of agricultural ecosystem in Korea. Taxonomic descriptions for two species are presented with diagnostic illustration.

• Korean journal of applied entomology
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• v.52 no.3
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• pp.171-179
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• 2013

Four linyphiid species, Centromerus sylvasticus (Blackwall, 1841), Ryojius japonicus Saito and Ono, 2001, Sachaliphantes sachalinensis (Tanasevitch, 1988) and Tmeticus vulcanicus Saito and Ono, 2001, are reported new to the Korean fauna. Four genera, Centromerus Dahl, 1886, Ryojius Saito and Ono, 2001, Sachaliphantes Saaristo and Tanasevitch, 2004 and Tmeticus Menge, 1868, are also new to Korea. Diagnostic phototraphs and illustrations of species are provided.

• International Journal of Industrial Entomology and Biomaterials
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• v.4 no.2
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• pp.163-168
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• 2002

We report for the first time the cDNA sequence encoding a ferritin subunit from the spiders Araneus ventricosus. The complete cDNA sequence of A. ventricosus ferritin subunit comprised 516 bp with 172 amino acid residues. The A. ventricosus ferritin subunit cDNA contained a conserved iron responsive element sequence in the 5 untranslated region. An alignment of the deduced protein sequence of the A. ventricosus ferritin subunit gene to that of other heavy chain ferritin molecules showed that A. ventricosus ferritin subunit is most similar to the great pond snail, Lymnaea stagnalis, ferritin with 70.2% of protein sequence identity.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2005.10a
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• pp.143-147
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• 2005

In this study, a die set for enclosed die forging is developed and it is applied to precision forging of bevel gears and spiders. The enclosed die forging die set is introduced in detail together with the enclosed die forging. A target mechanical press and a model product are selected and various engineering technologies are applied for detail design of the enclosed die forging die set. Several precision forgings are manufactured by the developed die set. The enclosed die forging die set as well as the precision forging processes are developed under intensive industry-university cooperation.

• Applied Microscopy
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• v.22 no.1
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• pp.128-142
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• 1992

Ultrastructure of the poison secreting organ in the spiders, Agelena limbata Thorell and Nephila clavata L. Koch were studied using scanning and transmission electron microscopes. The venom glands located its secretory sac portion in cephalothorax and excretory duct in the fang of chelicera are one pair of simple alveolar glands composed of three kinds of basic tissues-outer spiral musculature, middle myoepithelium and inner glandular epithelium. The muscle cells of the venom gland junctioned with the motor nerve endings at neuromuscular contact area are composed of smooth muscle fibers, whereas the myoepithelial cells between the musculature and inner glandular epithelium have compact collagenous fibers within the cytoplasm. The glandular epithelial cells which arranged along the concentrical location are subdivided into basal light cells and apical dark cells according to electron densities of their cytoplasms.

• The Korean Journal of Zoology
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• v.14 no.1
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• pp.7-18
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• 1971

깔때기거미屬(Coras)은 1898年에 E. Simon이 創設한 이래, 北美洲에서 約 15種, 極東地域에서 다음 3種이 記載되었다. 卽 C. insidiosus(L. Koch, 1877) 日本 C. luctuosus(L. Koch, 1877) 日本 $\\cdot$ 中國(\ulcorner) C.plancyi(Simon, 1880) 日本 $\\cdot$ 中國 本屬은 Coelotes 屬과 매우 닮아서, 그 사이에 뚜렷한 區分을 지우기란 困難하며, 따라서 種의 所屬에도 적지않은 混亂을 招來하고 있다. 本屬은 종래에는 Ageleidae의 Ageleninae에 所屬시켜 왔으나 最近에 Lehtinen(1967)은 이것을 F.O. Pickard-Cambridge(1893)가 設定한 Coelotinae로 옮겼는데 이것은 매우 타당한 處事라 하겠다. 韓國産 Coras 屬에 對해서는 白(1942, 1962, 1967), 白 $\\cdot$ 金(1956) 및 南宮(1964) 等이 日本과 共通種인 Coras insidiosus를 報告한바 있다. 그러나 이번 調査에서 이것은 Coelotes songminjae Paik et Yaginuma, 1969의 synonym으로 밝혀졌으므로 우리 나라의 spider fauna에서 除外하기로 했다. 한편 筆者 所藏의 標本을 整理한 結果 새로히 1韓國未記錄種 과 1新種을 얻었기에 이에 記載하는 바이다. 韓國未記錄種 Coras luctuosus (L. Koch, 1877) 왜깔때기거미 新種 Coras vulgaris n. sp. 한국깔때기거미

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.5 no.3
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• pp.216-221
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• 2005

The rapid growth and spread of the World Wide Web has made it possible to easily access a variety of useful information. It is, however, very difficult to retrieve, manage, and use the desired information in web. Various kinds of systems such as Search engines, MetaSearch engines, Spiders, Softbots, Intelligent Agents or Web Agents have been developed by a large number of researchers and companies. Those systems as intelligent agent are employed to avoid the overload of information. To efficiently improve the Software Agents, it is necessary to represent and classify the retrieved data. And to improve performance of the Intelligent Agents to create the classification, it is offered how to evaluate the propriety with other information retrieved from the Web and to recommend to the user the most suitable information.

• The Korean Journal of Soil Zoology
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• v.5 no.1
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• pp.13-19
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• 2000

This paper deals with four species of jumping spiders from Hunan province, China. Two new species; Philaeus daoxianensis sp. n. and Simaetha gongi sp. n., two new ones to China; Neon ningyo and Tasa davidi. Diagnostic structures, such as body and genitalia organs, are illustrated to each species. Descriptions and known data of geographical distribution also are given. In addition, detailed comparisons of the new species and its similar species are discussed. Type specimens are deposited in Department of Biology, Hunan Normal University, Changsha, Hunan, China.

• The Korean Journal of Zoology
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• v.9 no.1
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• pp.31-38
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• 1966

굴둑거미속(Cybaeus)은 물거미과(Argyronetidae)에 속하는 거미로서 지금가지 전세계에서 약 62종이 기재되었는데 그 지리적 분포를 보면 신북구에 40종, 구북구에 18종, 신열대구에 3종, 에치초피아구에 1 종의 순으로 되어 신북구가 절대 다수인 67%를 차지하고 있다. 구북구의 16종은 구주산이 5종, 몽고산이 1 종, 중국 본토산이 1 종, 일본산이 11종 기재되어있다. 한국산 굴둑거미속에 대해서는 저자 (1962)가 소백산산의 Cybaeus sp. 1(2 ♀♀)과 Cybaeus sp. 2(2Y♀♀)를 , 남궁씨(1964)가 충주산의Cybaeus sp.를 보고하였을뿐이다. 금반 한국산 굴둑거미속의 거미를 정리한 결과 저자가 보고한 Cybaeus sp.1과 남궁씨가 보고한 Cybaeus sp. 는 동일종으로서 신종에 해당함을 알았으며 이 밖에도 1 신종과 1 미기록종을 얻었기에 이에 기재하였다. 즉 미기록종 : Cybaeus nipponicus (Uyemura, 1938) 신종 : Cybaeus lingus sp. nov. , Cybaeus triangulus sp. nov.