Microdous amblyrhynchos sp. nov., a new member of the small-toothed sleepers (Teleostei, Gobiiformes, Odontobutidae) from Guangxi, southern China

Microdous amblyrhynchos, a new species, the second one in the genus, from the family Odontobutidae, is described from the Hongshui River, in the upper reaches of the Xijiang River of the Pearl River drainage, Baise City, Guangxi Zhuang Autonomous Region, southern China. This species is distinguished from its only congener, M. chalmersi, by the blunt snout (vs. pointed); mean snout length/head length ratio 0.27 (vs. 0.3); eye not extending outward (vs. protruding); mean interorbital width/head length ratio 0.25 (vs. 0.11). Additionally, the results of molecular phylogenetic analysis confirmed that M. amblyrhynchos sp. nov. is distinct from its sister species, M. chalmersi

Spatio-Temporal Coordination Analysis of Urban Welfare and Tourism Development in the Yangtze River Delta Region

Realizing the coupled coordination between urban welfare (UW) and tourism development (TD) is an important guarantee to achieve healthy and orderly socioeconomic development and move towards a high-quality life. On the basis of constructing the evaluation system of UW and TD, this study explored the interactive response relationship and spatio-temporal coupled coordination characteristics between UW and TD in the Yangtze River Delta urban agglomeration using the entropy weight TOPSIS method, panel vector autoregression (PVAR) model and coupled coordination degree model. The main findings are as follows: (1) UW and TD in the Yangtze River Delta presented an upward trend from 2001 to 2020, while the development level and growth rate of tourism lagged behind urban welfare, and there was obvious spatial heterogeneity at the provincial level. (2) There was a long-run equilibrium and reciprocal feedback relationship between UW and TD, and the contribution of TD was greater than that of UW to TD. (3) There existed a significantly positive spatial association between UW and TD, and their local spatial association pattern was dominated by High-High and Low-Low clustering. (4) The coupled coordination degree between UW and TD in the Delta region generally showed a spatial pattern decreasing from southeast to northwest, with the regional gap diminishing and the coupled coordination type in most cities gradually evolving from mild and near disordered to bare and primary coordination. This study can form a useful reference for the harmonious improvement of UW and TD in the Yangtze River Delta

Spatio-Temporal Coordination Analysis of Urban Welfare and Tourism Development in the Yangtze River Delta Region

Realizing the coupled coordination between urban welfare (UW) and tourism development (TD) is an important guarantee to achieve healthy and orderly socioeconomic development and move towards a high-quality life. On the basis of constructing the evaluation system of UW and TD, this study explored the interactive response relationship and spatio-temporal coupled coordination characteristics between UW and TD in the Yangtze River Delta urban agglomeration using the entropy weight TOPSIS method, panel vector autoregression (PVAR) model and coupled coordination degree model. The main findings are as follows: (1) UW and TD in the Yangtze River Delta presented an upward trend from 2001 to 2020, while the development level and growth rate of tourism lagged behind urban welfare, and there was obvious spatial heterogeneity at the provincial level. (2) There was a long-run equilibrium and reciprocal feedback relationship between UW and TD, and the contribution of TD was greater than that of UW to TD. (3) There existed a significantly positive spatial association between UW and TD, and their local spatial association pattern was dominated by High-High and Low-Low clustering. (4) The coupled coordination degree between UW and TD in the Delta region generally showed a spatial pattern decreasing from southeast to northwest, with the regional gap diminishing and the coupled coordination type in most cities gradually evolving from mild and near disordered to bare and primary coordination. This study can form a useful reference for the harmonious improvement of UW and TD in the Yangtze River Delta

Non-destructive Identification of the geographical origin of red jujube by near-infrared spectroscopy and fuzzy clustering methods

ABSTRACTThe red jujube quality is closely associated with its place of origin. In order to quickly and easily identify the geographical origin of red jujube, the classification of red jujube samples’ near-infrared reflectance (NIR) spectra was performed using several fuzzy clustering methods in combination with principal component analysis (PCA) and linear discriminant analysis (LDA). Firstly, a NIR-M-R2 portable near-infrared spectrometer was used to collect four varieties of red jujube samples from four representative producing areas in four provinces: Gansu, Henan, Shanxi and Xinjiang in China. Each variety corresponded to a producing area, and it had 60 samples with a total of 240 samples. Near-infrared spectra of red jujube were acquired using a NIR-M-R2 portable near-infrared spectrometer, and the initial near-infrared spectra were preprocessed by Savitzky-Golay (SG) filtering. Secondly, PCA and LDA were used to further process the NIR data for dimension reduction and feature extraction, respectively. Finally, red jujube samples were classified by fuzzy C-means (FCM) clustering, Gustafson-Kessel (GK) clustering and possibility fuzzy C-means (PFCM) clustering. When GK served as the clustering algorithm, the clustering accuracy was the highest, as the value of 98.8%. Based on the experimental results, it was evident that the GK clustering algorithm played a significant role in identifying the place of origin of red jujube with near-infrared spectroscopy

A Combination Approach of the Numerical Simulation and Data-Driven Analysis for the Impacts of Refracturing Layout and Time on Shale Gas Production

Refracturing can alleviate the rapid decline of shale gas production with a low drilling cost, but an appropriate fracture layout and optimal refracturing time have been unclear without a heavy computation load. This paper proposes a combination approach with a numerical simulation and data-driven analysis to quickly evaluate the impacts of the refracturing layout and refracturing time on shale gas production. Firstly, a multiphysical coupling model with the creep of natural fractures is established for the numerical simulation on shale gas production. Secondly, the effects of the refracturing layout and refracturing time on the shale gas production are investigated through a single factor sensitivity analysis, but this analysis cannot identify the fracture interaction. Thirdly, the influence of fractures interaction on shale gas production is explored through a combination of a global sensitivity analysis (GSA) and an artificial neural network (ANN). The GSA results observed that the adjacent fractures have more salient interferences, which means that a denser fracture network will not significantly increase the total gas production, or will reduce the contribution from each fracture, resulting in higher fracturing costs. The new fractures that are far from existing fractures have greater contributions to cumulative gas production. In addition, the optimal refracturing time varies with the refracturing layout and is optimally implemented within 2–3 years. A suitable refracturing scale and time should be selected, based on the remaining gas reserve. These results can provide reasonable insights for the refracturing design on the refracturing layout and optimal time. This ANN-GSA approach provides a fast evaluation for the optimization of the refracturing layout and time without enormous numerical simulations

Work-Related Identity Discrepancy and Counterproductive Work Behavior: The Role of Emotional Exhaustion and Supervisor Incivility

This research investigates the role of emotional exhaustion and supervisor incivility in explaining the relationship between work-related identity discrepancy and counterproductive work behavior. Based on resource conservation theory, our study hypothesizes a moderated mediation model that work-related identity discrepancy impacts counterproductive work behavior through emotional exhaustion, and supervisor incivility is deemed as the boundary condition in the indirect effect. Drawing on a sample of 863 employees, we found support for the moderated mediation model in which the positive relationship between work-related identity discrepancy and counterproductive work behavior was mediated by emotional exhaustion, such that the mediating relationship was strengthened for new leaders with a low level of supervisor incivility and weakened for those with high level of supervisor incivility. We further discuss the theoretical and practical implications of these findings

The Paradox of Group Citizenship and Constructive Deviance: A Resolution of Environmental Dynamism and Moral Justification

Previous research on antecedents to constructive deviance remains scattered and inclusive. Our study conceptualizes constructive deviance from the perspective of ethical decision making and explores its antecedents, mechanism, and conditions. Drawing on moral licensing theory and social information processing theory, we propose that group citizenship behavior facilitates moral justification and constructive deviance when environmental dynamism is high and inhibits them when it is low; and moral justification fully mediates the relationship between the interaction of group citizenship behavior and environmental dynamism and constructive deviance. With two-wave panel data collected from 339 employees in 54 groups of five service companies in retailing, finance, and tourism randomly selected from three provinces in southern China, these hypotheses are all supported empirically. Our findings broaden the antecedents and occurrence mechanism of constructive deviance through an ethical decision-making lens. Our study contributes to the moral licensing literature by enriching the sources of moral licensing in the workplace and empirically demonstrating that moral justification may function as an underlying mechanism of moral licensing