12,108 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
FIGURE 1. UPGMA dendrogram 33 in Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers
No full textFIGURE 1. UPGMA dendrogram 33 populations of 'Xihuangcao' based on ISSR.Published as part of Ye, Zi, Meng, Shuangshuang, Zhao, Shuangshuang, Gu, Jingfeng, Xiao, Xiaoji, Zhan, Ruoting & Liu, Junmin, 2022, Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers, pp. 49-62 in Phytotaxa 556 (1) on page 57, DOI: 10.11646/phytotaxa.556.1.4, http://zenodo.org/record/695206
FIGURE 2 in Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers
No full textFIGURE 2. Principal coordinate analysis of 33 populations of 'Xihuangcao' based on ISSR.Published as part of Ye, Zi, Meng, Shuangshuang, Zhao, Shuangshuang, Gu, Jingfeng, Xiao, Xiaoji, Zhan, Ruoting & Liu, Junmin, 2022, Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers, pp. 49-62 in Phytotaxa 556 (1) on page 57, DOI: 10.11646/phytotaxa.556.1.4, http://zenodo.org/record/695206
FIGURE 3. UPGMA dendrogram 33 in Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers
No full textFIGURE 3. UPGMA dendrogram 33 populations of 'Xihuangcao' based on SCoT.Published as part of Ye, Zi, Meng, Shuangshuang, Zhao, Shuangshuang, Gu, Jingfeng, Xiao, Xiaoji, Zhan, Ruoting & Liu, Junmin, 2022, Analysis of genetic diversity among five closely related species used as 'Xihuangcao' herbs using ISSR and SCoT molecular markers, pp. 49-62 in Phytotaxa 556 (1) on page 58, DOI: 10.11646/phytotaxa.556.1.4, http://zenodo.org/record/695206
The SMAA-TWD model: A novel stochastic multi-attribute three-way decision with interrelated attributes in triangular fuzzy information systems
No full textAs a decision model to depict the human cognitive process, three-way decision (TWD) offers a reasonable semantic interpretation for solving practical multi-attribute decision -making (MADM) problems. Due to the complexity of the decision-making environment, uncertainties usually exist in multi-attribute three-way decision making problems. To stress these uncertainties simultaneously, a novel stochastic multi-attribute TWD model that incorporates TWD, epsilon-almost stochastic dominance, and stochastic multiobjective acceptability analysis (SMAA) is proposed for dealing with stochastic MADM problems with interrelated attributes in triangular fuzzy information systems. First, based on the epsilon-almost stochastic dominance, a novel epsilon-almost stochastic dominance degree is proposed for measuring the quantitative relationship of two triangular fuzzy numbers. Second, a novel stochastic TWD model is presented, in which the set of two states, conditional prob-ability, and relative loss, can be obtained according to an information system. Third, the Choquet integral with respect to bi-capacity is utilized to aggregate the expected losses of three actions to strengthen their interpretability. Fourth, a SMAA-TWD model is pro-posed for multi-attribute TWDs with interrelated attributes in triangular fuzzy information systems. Finally, an application to medical diagnosis is given, and a comparative analysis is performed to verify the applicability and effectiveness of the proposed model
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
A K-means Clustering and Triangulation-Based Scheme for Accurate Detection of Multiple Adjacent Through-the-Wall Human Targets
No full textThrough-the-wall (TTW) human targets' detection is extensively desired in civil and military applications. Most studies in this field have only focused on multiple human targets with large spacing, while the situation of short spacing has yet to be well-treated. To solve this problem, an accurate and robust postprocessing scheme is developed in this article for detecting multiple adjacent TTW human targets. First, we identify human targets in the range slow-time planes with a high detection rate. Second, according to the comparing result between different operating planes, two localization solutions based on K-means clustering and triangulation are proposed to extract the precise spatial positions of human targets. Third, using the designed radar system, the effectiveness of the proposed scheme is verified by two typical simulations and three field experiments. The results indicate that the proposed scheme can accurately detect multiple TTW human targets under conditions including large, short spacing, and different orientations with a localization accuracy of 20 cm
Raw data of Zhao et al., 2022, Geoderma
No full textRaw data associated with Zhao et al., 2022, Geoderma. Any use of the data set should be approved by the corresponding author Kai Yue at "[email protected]".</p
Chao Yuen Ren (1892–1982)
No full textY. R. Chao is easily the most famous linguist to have come out of China. Born before the end of the last dynasty in China, he received a traditional Confucian education, but was also one of the first Chinese people to be sent to the West for training in modern Western science (under the Boxer Indemnity Fund). The remarkable breadth and scope of his studies included physics, mathematics, linguistics, musical and literary composition, and translation, and he was a pioneer in many of these fields
Physiological and environmental control on ecosystem water use efficiency in response to drought across the northern hemisphere
No full textDrought, a natural hydrometeorological phenomenon, has been more frequent and more widespread due to climate change. Water availability strongly regulates the coupling (or trade-off) between carbon uptake via photosynthesis and water loss through transpiration, known as water-use efficiency (WUE). Understanding the effects of drought on WUE across different vegetation types and along the wet to dry gradient is paramount to achieving better understanding of ecosystem functioning in response to climate change. We explored the physiological and environmental control on ecosystem WUE in response to drought using observations for 44 eddy covariance flux sites in the Northern Hemisphere. We quantified the response of WUE to drought and the relative contributions of gross primary production (GPP) and evapotranspiration (ET) to the variations of WUE. We also examined the control of physiological and environmental factors on monthly WUE under different moisture conditions. Cropland had a peak WUE value under moderate drought conditions, while grassland, deciduous broadleaf forest (DBF), evergreen broadleaf forest (EBF), and evergreen needleleaf forest (ENF) had peak WUE under slight drought conditions. WUE was mainly driven by GPP for cropland, grassland, DBF, and ENF but was mainly driven by ET for EBF. Vapor pressure deficit (VPD) and canopy conductance (Gc) were the most important factors regulating WUE. Moreover, WUE had negative responses to air temperature, precipitation, and VPD but had a positive response to Gc and ecosystem respiration. Our findings highlight the different effects of biotic and abiotic factors on WUE among different vegetation types and the important roles of VPD and Gc in controlling ecosystem WUE in response to drought
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