• Title/Summary/Keyword: Ecological evolution

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Differential Evolution Algorithm Using Ecological Model (생태학적 모델을 이용한 차동 진화 알고리즘)

  • Shin, Seong-Yoon;Lee, Hyun-Chang;Shin, Kwang-Seong
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2021.01a
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    • pp.283-284
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    • 2021
  • 본 논문에서는 서로 다른 진화 전략의 병렬화를 구현하기 위해 섬 모델을 도입하고 자원 간의 균형을 유지하기 위해 Monod 모델을 활용하는 PDE-EM이라는 생태 모델 알고리즘을 기반으로 한 새로운 병렬 DE를 제안하도록 한다. 각 섬은 동일한 자원으로 서로 다른 전략으로 진화한다. 지정된 세대 수마다 섬의 진화 정도에 따라 등급이 매겨지고, Monod 모델을 활용하여 각 섬에 다양한 자원이 할당된다.

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Ecological Based Hybrid Differential Evolution (생태 기반 하이브리드 차등 진화)

  • Shin, Seong-Yoon;Cho, Gwang-Hyun;Cho, Seung-Pyo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2022.10a
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    • pp.416-417
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    • 2022
  • In this paper, we propose a hybrid DE based on an ecological model algorithm called SparkHDE-EM. This model implements the parallelization of various DE variants by introducing an island model based on Spark, and utilizes the Monod model to maintain a balance between resources.

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Fish Community Structure in the Pyeongchanggang River

  • Choi, Jun-Kil
    • Animal Systematics, Evolution and Diversity
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    • v.27 no.2
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    • pp.151-158
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    • 2011
  • Fish community structure in the Pyeongchanggang River was investigated from April to November 2009. About 900 individuals representing 24 species from eight families at six sites in the Pyeongchanggang River were collected. It was similar to the 2001's survey and it was less than 2006's survey. The Korean endemic species, Zacco koreanus was the most abundant, whereas subdominant species were native species, such as Pungtungia herzi, Zacco platypus, Rhynchocypris kumgangensis and Rhynchocypris oxycephalus. Three endangered species were collected at the sampling area, Acheilognathus signifier (relative abundance [RA] 0.9%), Pseudopungtungia tenuicorpa (RA 1.4%), and Cottus koreanus (RA 3.6%). One natural monument species, Hemibarbus mylodon, was included. According to the analysis of ecological indicator characteristics, the relative proportion of tolerant species was 6.3% (57 individuals), whereas the proportion of sensitive species was 65.9% (593 individuals). Species evenness, richness and diversity indices decreased gradually through the month from April to November during the study. Community indices in Pyeongchanggang River showed a high evenness index (J'>0.6), a low level of species richness (R<3.5) and a medium level of diversity (1.5

Taxonomy of the Golovinomyces cynoglossi Complex (Erysiphales, Ascomycota) Disentangled by Phylogenetic Analyses and Reassessments of Morphological Traits

  • Braun, Uwe;Bradshaw, Michael;Zhao, Ting-Ting;Cho, Sung-Eun;Shin, Hyeon-Dong
    • Mycobiology
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    • v.46 no.3
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    • pp.192-204
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    • 2018
  • The name Golovinomyces cynoglossi s. lat. is traditionally applied to a complex of morphologically similar powdery mildews on hosts of the plant family Boraginaceae. The current species-level taxonomy within this complex is ambiguous due to the lack of phylogenetic examinations. The present study applied phylogenetic methods to clarify the taxonomy of G. cynoglossi s. lat. Phylogenetic analysis of rDNA ITS sequences retrieved from Asian, European and North American specimens revealed that G. cynoglossi s. lat. collections from different hosts involved several species in five clearly separated lineages. Clade I consists primarily of Golovinomyces cynoglossi s. str. on Cynoglossum. Clade III consists of Golovinomyces sequences retrieved from the host genera Symphytum and Pulmonaria. The taxa within clade III are now assigned to G. asperifoliorum comb. nov. Clade V encompasses G. cynoglossi s. lat. on the host genera Bothriospermum, Buglossoides, Echium, Myosotis, and Trigonotis. The taxa within clade V are now assigned to G. asperifolii comb. nov. The species concerned in this study were lecto- and epitypified to stabilize their nomenclature.

Odontosia patricia (Lepidoptera: Notodontidae) New to Korea, with Comment on the Notodontid Fauna of High Altitude of Jirisan Mt.

  • Choi, Sei-Woong
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.3
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    • pp.269-272
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    • 2008
  • We report a species of Notodontidae, Odontosia patricia Stichel 1918 for the first time from Korea. Two males of O. patricia were collected at the end of May, 2008 from Quercus mongolica forest of Jirisan Mt., a Korea Long-Term Ecological Research site. The notodontid-moth fauna and population changes of three years (2005-2007) from Q. mongolica forest site are provided.

Three Species of the Genus Pipunculus Latreille (Insecta: Diptera: Pipunculidae) New to Korea

  • Suh, Sang-Jae;Kwon, Yong-Jung
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.3
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    • pp.187-190
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    • 2010
  • In this paper, three species of the big-headed fly belonging to the genus Pipunculus Latreille are newly reported from Korea: P. avius Morakote, P. emiliae Kuznetzov, and P. rarus Morakote. A key to the Korean species and some photographs on external features are given.

Bryocoris gracilis (Hemiptera: Miridae) New to Korea

  • Cho, Young-Jae;Kwon, Yong-Jung;Suh, Sang-Jae
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.3
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    • pp.321-323
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    • 2010
  • Korean Bryocoris species, B. gracilis and B. montanus, were reviewed. Of these, B. gracilis Linnavuori, 1962 is first reported in Korea and diagnosed, based on a single female specimen collected from Mount Hwangmaesan, Gyeongsangnam-do province. A key to the Korean species and photographs on external features are given.

Review of the Poorly Known Harvestman Subfamily Opilioninae (Arachnida: Opiniones: Phalangiidae) with Himalphalangium spinulatum from Korea

  • Ban, Soo-Hong;Kwon, Tae-Seong;Kim, Byung-Woo
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.1
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    • pp.39-47
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    • 2010
  • Himalphalangium spinulatum (Roewer, 1911) collected from Gijang-gun, Busan-city, Korea is redescribed with spination of leg, detailed illustrations including SEM photographs for the first time. Bidentolophus bidens (Simon, 1880) as a junior synonym of Opilio koreanus Charitonov, 1957 from North Korea is additionally reported in the Korean fauna. Also, a key to the species of Korean subfamily Opilioninae is provided.

Three New Species of Procloeon (Ephemeroptera: Baetidae) from Thailand

  • Tungpairojwong, Nisarat;Bae, Yeon Jae
    • Animal Systematics, Evolution and Diversity
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    • v.31 no.1
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    • pp.22-30
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    • 2015
  • Three baetid mayflies in the genus Procloeon Bengtsson are described from Thailand: P. narumonae, n. sp. (male and female adults and larva), P. rubeosternum, n. sp. (male and female adults, male and female subimagos, and larva), and P. siamensis, n. sp. (larva). Descriptions of known stages with line-drawings of diagnostic characters, material data, diagnoses, habitat data, and taxonomic remarks are provided.

A study on characteristics of construction materials in Korean traditional construction area - Focused on a viewpoint of ecological esthetics - (한국 전통 건축 공간에 나타난 건축 재료의 특성에 관한 연구 - 생태 미학적 관점을 중심으로 -)

  • Yang, Eun-Ji;Kim, Kai-Chun
    • Korean Institute of Interior Design Journal
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    • v.21 no.6
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    • pp.224-232
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    • 2012
  • Although evolution of construction materials brought about development of modern architecture, they caused destruction of the environment and pollution. This problem is not a new one in terms of ecological esthetics and materials of sustainable architecture in light of the Eastern view of nature and this idea became a background of this study. The basic concept is to try to find out their characteristics from a perspective of ecological esthetics in relation to traditional building materials that nature, architecture, and humans coexist and live with each other to balance. Based on ecological esthetics and precedent studies on materials of traditional architecture, we investigated connections, expressive methods and characteristics in traditional residential construction space. This attempt has meanings in that it can propose a new framework of forming various viewpoints and spatial perceptions in relation to esthetics and traditional construction materials. The current study examined the characteristics by dividing them into tangible and intangible elements based on expressive features of elements of nature. The characteristics found by this process are not simply notion of physical materials, but plays a key role aesthetically and ecologically. Nature and materials take circulation of the law of nature, regulate energy, increase efficiency and play a major role in an economic way. Nature in itself becomes natural alternative energy, and plays its role in an invisible fashion. It examined how expressive characteristics of construction materials are reflected through analyzing residential space and Korean traditional garden having relationships with Eastern viewpoint of nature in relation to Korean traditional construction materials from a perspective of ecological esthetics. Findings of the above study indicate that expressive characteristics of Korean traditional construction materials from a perspective of ecological esthetics are that nature, space, humans coexist and live together and they will provide a clue to an alternative to solve ecological and environmental problems modern society will have in the future. Through this process, it provided a possibility that traditional space and materials can be succeeded in creative and new ways, and it found out the way for nature, space, and humans to coexist and a possibility of ecological esthetics. It addition, it will provide a key base as an alternative of sustainable design of the future.

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