305,532 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Radulomyces zixishanensis C. L. Zhao
No full textRadulomyces zixishanensis C.L. Zhao sp. Specimen examined: Zixishan National Forest Park, Chuxiong, Yunnan Province, China, the trunk of angiosperm, 2 July 2021, CLZhao 21127 (SWFC).Published as part of Zhang, Xiaojie, Yuan, Qi, Su, Jiangqing & Zhao, Changlin, 2023, Diversity of wood-decaying fungi in Zixishan area (Hengduan Mountains), Yunnan Province, China, pp. 113-138 in Phytotaxa 612 (2) on pages 129-130, DOI: 10.11646/phytotaxa.612.2.1, http://zenodo.org/record/832347
Vappolotes Zhao & Li 2019
No full textGenus Vappolotes Zhao & Li, 2019 Type species. Vappolotes ganlongensis Zhao & Li, 2019, from Guizhou Province. Remarks. The genus Vappolotes originally was described with only two species: V. ganlongensis Zhao & Li, 2019 (♀ ³) and V. jianpingensis Zhao & Li, 2019 (♀). Some diagnostic characters of this genus are amended here, eg. conductor with dorsal and ventral apophyses in Li et al. (2019a) corrected to dorsal conductor and anterior conductor; tegular apophysis in Li et al. (2019a) corrected to posterior conductor; retrolateral tibial apophysis in Li et al. (2019a) corrected to lateral tibial apophysis; ventrolateral tibial apophysis in Li et al. (2019a) corrected to retrolateral tibial apophysis (Fig. 1A–C); atrium with longitudinal setae plexus, copulatory ducts and spermathecae located anteriorly, medially or posteriorly (Fig. 1D, E). Li et al. (2019a) and Okumura & Zhao (2022) proposed Vappolotes, Longicoelotes Wang, 2002, Platocoelotes Wang, 2002, Papiliocoelites Zhao & Li, 2016 and Spiricoelotes Wang, 2022 are sister groups belonging to lacking epigynal teeth clade, as: {[(Vappolotes + Papiliocoelotes) + Spiricoelotes] + Longicoelotes} + Platocoelotes.Published as part of Li, Bing, Zhao, Zhe & Li, Shuqiang, 2023, Three new species of the genus Vappolotes Zhao & Li, 2019 (Araneae, Agelenidae) from southwest China, pp. 325-336 in Zootaxa 5270 (2) on page 326, DOI: 10.11646/zootaxa.5270.2.8, http://zenodo.org/record/786501
Species-habitat associations in a northern temperate forest in China
No full textZhang, C., Zhao, Y., Zhao, X. & Gadow, K. v. 2012. Species-habitat associations in a northern temperate forest in China. Silva Fennica 46(4): 501-519. This contribution identifies species-habitat associations in a temperate forest in north-eastern China, based on the assumption that habitats are spatially autocorrelated and species are spatially aggregated due to limited seed dispersal. The empirical observations were obtained in a large permanent experimental area covering 660 x 320 m. The experimental area was subdivided into four habitat types using multivariate regression tree (MRT) analysis. According to an indicator species analysis, 38 of the 47 studied species were found to be significant indicators of the MRT habitat types. The relationships between species richness and topographic variables were found to be scale-dependent, while the great majority of the species shows distinct habitat-dependence. There are 188 potential species-habitat associations, and 114 of these were significantly positive or negative based on habitat randomization. We identified 139 significant associations using a species randomization. A habitat is not a closed system it may be both, either a sink or a source. Therefore, additional to the randomization, the Poisson Cluster Model (PCM) was applied. PCM considers the spatial autocorrelation of species and habitats, and thus appears to be more realistic than the traditional randomization processes. It identified only 37 associations that were significant. In conclusion, the deviation from the random process, i.e. the high degree of species spatial mingling may be explained by persistent immigration across habitats
Tianshan Mountian grid monthly merging precipitation
No full textReadme document for PMRGSA_V1(26 January, 2023)1. Introduction The purpose of this work is to construct a gridded precipitation datasets by merging the interpolation precipitation based on in situ observation and satellite precipitation product in Tianshan mountain regions, northwest of China.2. General Information2.1 ProductsThe products we release are 0.01x0.01-degree gridded data over Tianshan mountain regions, northwest of China.The gridded fields of monthly precipitation are defined by merging accurate quantitative observations from weather stations with continuous spatial information and from satellite-based estimate product. The gridded precipitation product exhibits a monthly temporal resolution and a spatial resolution of 0.01° for the Tianshan Mountains, while extending back to 1981. We use a suitable interpolation of ANUSPLIN was used to interpolate grid precipitation based on in situ data. The interpolation grid precipitation was then merged with the satellite precipitation product CHIRPS developed by the U.S. Geological Survey and the Climate Hazards Group.Details are given in a forthcoming paper by Zhao et al. (2023).2.2 Spatial and Temporal CoverageSpatial coverage: Tianshan Mountain (73.2.0E – 95.8.0E, 39.0S - 45.5N) Spatial resolution : 0.01 degree latitude/longitude Temporal coverage : January, 1981 - December, 2019 (39 years) Temporal resolution : Monthly2.3 Units Precipitation: mm/month2.4 Missing CodeText or TIFF Precipitation : -9999NetCDF Precipitation : -3.4028235e383. Data Files and Their StructureThe product is stored in one file per month.3.1 Denotationprec_ZZZZZZZZ: The year in 4 digits (e.g. 1981, 1982, ..., 2019)For the file in Tiff format, filename ends with the suffix ".Tif"For the file in ASCII format, filename ends with the suffix ".Txt"For the file in NetCDF format, filename ends with the suffix ".nc"3.2 Structure of Data FilesEach file contains monthly fields for a year. Monthly fields contain information on the precipitation amount. In the case of a 0.01-degree grid file, each field consists of a data array with longitude by latitude dimensions of 2205 x 624 elements. The data files are written in ArcGIS10.5. User can be generated other format data file used the ArcGIS.4. Contacts Please contact us for further questions regarding this product. [email protected] Dr. Chuancheng Zhao School of Information and Engineering 11 jiefang road, anning district，lanzhou, Gansu province of China Tel:+86-1391999620
WB-Zhao/Geo_Gas_STibet: Gas_STibet
No full textThis release archives the data files for He-C-N systematics of hydrothermal volatiles in the Lhasa terrane, southern Tibe
Tianshan Mountian grid monthly merging precipitation
No full textReadme document for PMRGSA_V1(26 January, 2023)1. Introduction The purpose of this work is to construct a gridded precipitation datasets by merging the interpolation precipitation based on in situ observation and satellite precipitation product in Tianshan mountain regions, northwest of China.2. General Information2.1 ProductsThe products we release are 0.01x0.01-degree gridded data over Tianshan mountain regions, northwest of China.The gridded fields of monthly precipitation are defined by merging accurate quantitative observations from weather stations with continuous spatial information and from satellite-based estimate product. The gridded precipitation product exhibits a monthly temporal resolution and a spatial resolution of 0.01° for the Tianshan Mountains, while extending back to 1981. We use a suitable interpolation of ANUSPLIN was used to interpolate grid precipitation based on in situ data. The interpolation grid precipitation was then merged with the satellite precipitation product CHIRPS developed by the U.S. Geological Survey and the Climate Hazards Group.Details are given in a forthcoming paper by Zhao et al. (2023).2.2 Spatial and Temporal CoverageSpatial coverage: Tianshan Mountain (73.2.0E – 95.8.0E, 39.0S - 45.5N) Spatial resolution : 0.01 degree latitude/longitude Temporal coverage : January, 1981 - December, 2019 (39 years) Temporal resolution : Monthly2.3 Units Precipitation: mm/month2.4 Missing Code Precipitation : -99993. Data Files and Their StructureThe product is stored in one file per month.3.1 Denotationprec_ZZZZZZZZ: The year in 4 digits (e.g. 1981, 1982, ..., 2019)For the file in Tiff format, filename ends with the suffix ".Tif"For the file in ASCII format, filename ends with the suffix ".Txt"For the file in NetCDF format, filename ends with the suffix ".nc"3.2 Structure of Data FilesEach file contains monthly fields for a year. Monthly fields contain information on the precipitation amount. In the case of a 0.01-degree grid file, each field consists of a data array with longitude by latitude dimensions of 2205 x 624 elements. The data files are written in ArcGIS10.5. User can be generated other format data file used the ArcGIS
Peniophorella fissurata C. L. Zhao, Mycological Progress
No full text<p> <i>Peniophorella fissurata</i> C.L. Zhao, Mycological Progress 19 (4): 400 (2020)</p> <p>Specimen examined: Zixishan National Forest Park, Chuxiong, Yunnan Province, China, the fallen branch of angiosperm, 1 July 2018, CLZhao 7290 (SWFC) (GenBank: ITS-OM955718).</p>Published as part of <i>Zhang, Xiaojie, Yuan, Qi, Su, Jiangqing & Zhao, Changlin, 2023, Diversity of wood-decaying fungi in Zixishan area (Hengduan Mountains), Yunnan Province, China, pp. 113-138 in Phytotaxa 612 (2)</i> on page 128, DOI: 10.11646/phytotaxa.612.2.1, <a href="http://zenodo.org/record/8323473">http://zenodo.org/record/8323473</a>
WB-Zhao/GasGeochemistry_Lhasa_S.Tibet: He-C-N systematics of hydrothermal volatiles in the Lhasa terrane, southern Tibet
No full textThis release archives Data files for He-C-N systematics of hydrothermal volatiles in the Lhasa terrane, southern Tibe
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