The Experts below are selected from a list of 1056 Experts worldwide ranked by ideXlab platform
Lingyang Song - One of the best experts on this subject based on the ideXlab platform.
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coalitional graph games for popular content distribution in cognitive radio vanets
arXiv: Computer Science and Game Theory, 2014Co-Authors: Tianyu Wang, Lingyang SongAbstract:Popular content distribution is one of the key services provided by vehicular ad hoc networks (VANETs), in which a popular file is broadcasted by roadside units (RSUs) to the on-board units (OBUs) driving through a particular area. Due to fast speed and deep fading, some file packets might be lost during the vehicle-to-roadside broadcasting stage. In this paper, we propose a peer-to-peer (P2P) approach to allow the OBUs to exchange data and complement the missing packets. Specifically, we introduce a coalitional graph game to model the cooperation among OBUs and propose a coalition formation algorithm to implement the P2P approach. Moreover, cognitive radio is utilized for vehicle-to-vehicle transmissions so that the P2P approach does not require additional bandwidth. Simulation results show that the proposed approach performs better in various conditions, relative to the non-cooperative approach, in which the OBUs share no information and simply response to any data request from other OBUs.
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coalitional graph games for popular content distribution in cognitive radio vanets
IEEE Transactions on Vehicular Technology, 2013Co-Authors: Tianyu Wang, Lingyang SongAbstract:Popular content distribution is one of the key services provided by vehicular ad hoc networks (VANETs), in which a popular file is broadcast by roadside units (RSUs) to the onboard units (OBUs) driving through a particular area. Due to fast speeds and deep fading, some file packets might be lost during the vehicle-to-roadside (V2R) broadcasting stage. In this paper, we propose a peer-to-peer (P2P) approach to allow the OBUs to exchange data and complement the missing packets. Specifically, we introduce a coalitional graph game to model the cooperation among OBUs and propose a coalition formation algorithm to implement the P2P approach. Moreover, cognitive radio (CR) is utilized for vehicle-to-vehicle (V2V) transmissions so that the P2P approach does not require additional bandwidth. Simulation results show that the proposed approach performs better under various conditions, relative to the noncooperative approach, in which the OBUs share no information and simply respond to any data request from other OBUs.
Naoto Kamata - One of the best experts on this subject based on the ideXlab platform.
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a new species of pseudasphondylia diptera cecidomyiidae associated with magnolia Kobus dc var borealis sarg magnoliaceae in japan
Biodiversity Data Journal, 2021Co-Authors: Hiroki Matsuda, Ayman Khamis Elsayed, Wanggyu Kim, Satoshi Yamauchi, Martin Libra, Naoto KamataAbstract:Background A gall midge species (Diptera: Cecidomyiidae) inducing leaf bud galls on Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) was found in Hokkaido and northern Honshu, Japan. New information Based on its morphology, the species is regarded as an undescribed species of the genus Pseudasphondylia Monzen (Cecidomyiinae, Cecidomyiidi, Asphondyliini). The species is herein described as Pseudasphondylia saohimea Matsuda, Elsayed and Tokuda sp. n. The new species is easily distinguishable from its congeners by the number of adult palpal segments and the shape of the male terminalia and larval spatula.
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A new species of Pseudasphondylia (Diptera: Cecidomyiidae) associated with Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) in Japan
'Pensoft Publishers', 2021Co-Authors: Hiroki Matsuda, Wanggyu Kim, Satoshi Yamauchi, Martin Libra, Naoto Kamata, Ayman Elsayed, Junichi Yukawa, Makoto TokudaAbstract:A gall midge species (Diptera: Cecidomyiidae) inducing leaf bud galls on Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) was found in Hokkaido and northern Honshu, Japan.Based on its morphology, the species is regarded as an undescribed species of the genus Pseudasphondylia Monzen (Cecidomyiinae, Cecidomyiidi, Asphondyliini). The species is described as Pseudasphondylia saohimea Matsuda, Elsayed and Tokuda n. sp. The new species is easily distinguishable from congeners by the number of adult palpal segments, and the shape of the male terminalia and larval spatula
Tianyu Wang - One of the best experts on this subject based on the ideXlab platform.
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coalitional graph games for popular content distribution in cognitive radio vanets
arXiv: Computer Science and Game Theory, 2014Co-Authors: Tianyu Wang, Lingyang SongAbstract:Popular content distribution is one of the key services provided by vehicular ad hoc networks (VANETs), in which a popular file is broadcasted by roadside units (RSUs) to the on-board units (OBUs) driving through a particular area. Due to fast speed and deep fading, some file packets might be lost during the vehicle-to-roadside broadcasting stage. In this paper, we propose a peer-to-peer (P2P) approach to allow the OBUs to exchange data and complement the missing packets. Specifically, we introduce a coalitional graph game to model the cooperation among OBUs and propose a coalition formation algorithm to implement the P2P approach. Moreover, cognitive radio is utilized for vehicle-to-vehicle transmissions so that the P2P approach does not require additional bandwidth. Simulation results show that the proposed approach performs better in various conditions, relative to the non-cooperative approach, in which the OBUs share no information and simply response to any data request from other OBUs.
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coalitional graph games for popular content distribution in cognitive radio vanets
IEEE Transactions on Vehicular Technology, 2013Co-Authors: Tianyu Wang, Lingyang SongAbstract:Popular content distribution is one of the key services provided by vehicular ad hoc networks (VANETs), in which a popular file is broadcast by roadside units (RSUs) to the onboard units (OBUs) driving through a particular area. Due to fast speeds and deep fading, some file packets might be lost during the vehicle-to-roadside (V2R) broadcasting stage. In this paper, we propose a peer-to-peer (P2P) approach to allow the OBUs to exchange data and complement the missing packets. Specifically, we introduce a coalitional graph game to model the cooperation among OBUs and propose a coalition formation algorithm to implement the P2P approach. Moreover, cognitive radio (CR) is utilized for vehicle-to-vehicle (V2V) transmissions so that the P2P approach does not require additional bandwidth. Simulation results show that the proposed approach performs better under various conditions, relative to the noncooperative approach, in which the OBUs share no information and simply respond to any data request from other OBUs.
Hiroki Matsuda - One of the best experts on this subject based on the ideXlab platform.
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a new species of pseudasphondylia diptera cecidomyiidae associated with magnolia Kobus dc var borealis sarg magnoliaceae in japan
Biodiversity Data Journal, 2021Co-Authors: Hiroki Matsuda, Ayman Khamis Elsayed, Wanggyu Kim, Satoshi Yamauchi, Martin Libra, Naoto KamataAbstract:Background A gall midge species (Diptera: Cecidomyiidae) inducing leaf bud galls on Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) was found in Hokkaido and northern Honshu, Japan. New information Based on its morphology, the species is regarded as an undescribed species of the genus Pseudasphondylia Monzen (Cecidomyiinae, Cecidomyiidi, Asphondyliini). The species is herein described as Pseudasphondylia saohimea Matsuda, Elsayed and Tokuda sp. n. The new species is easily distinguishable from its congeners by the number of adult palpal segments and the shape of the male terminalia and larval spatula.
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A new species of Pseudasphondylia (Diptera: Cecidomyiidae) associated with Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) in Japan
'Pensoft Publishers', 2021Co-Authors: Hiroki Matsuda, Wanggyu Kim, Satoshi Yamauchi, Martin Libra, Naoto Kamata, Ayman Elsayed, Junichi Yukawa, Makoto TokudaAbstract:A gall midge species (Diptera: Cecidomyiidae) inducing leaf bud galls on Magnolia Kobus DC. var. borealis Sarg. (Magnoliaceae) was found in Hokkaido and northern Honshu, Japan.Based on its morphology, the species is regarded as an undescribed species of the genus Pseudasphondylia Monzen (Cecidomyiinae, Cecidomyiidi, Asphondyliini). The species is described as Pseudasphondylia saohimea Matsuda, Elsayed and Tokuda n. sp. The new species is easily distinguishable from congeners by the number of adult palpal segments, and the shape of the male terminalia and larval spatula
Kazuhiko Fukushima - One of the best experts on this subject based on the ideXlab platform.
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evidence for a novel biosynthetic pathway that regulates the ratio of syringyl to guaiacyl residues in lignin in the differentiating xylem of magnolia Kobus dc
Planta, 1999Co-Authors: Fang Chen, Seiich Yasuda, Kazuhiko FukushimaAbstract:The biosynthetic pathways to monolignols in Magnolia Kobus were investigated by feeding stems with a deuterium-labeled precursor. Pentadeutero [γ,γ-2H2, OC2H3] coniferyl alcohol was supplied to shoots of Magnolia Kobus and the incorporation of the labeled precursor into lignin was traced by gas chromatography-mass spectrometry. In addition to the direct incorporation of the labeled precursor into guaiacyl units, we detected a significant amount of pentadeuterium-labeled syringyl units with two γ-deuterium atoms. The relative level of trideuterium-labeled syringyl monomers (the result of conversion via the cinnamic acid pathway, in which two γ-deuterium atoms are removed during enzymatic re-oxidation) was negligible. Our results provide conclusive evidence for a novel alternative pathway for generation of lignin subunits at the monolignol stage and they suggest that this new pathway might be important for regulation of the composition of lignin.
