Fast Visual Tracking with Squeeze and Excitation Region Proposal Network

Funding Information: This work was funded by the National Natural Science Foundation of China (Grant No. 62272063, 62072056, 61902041 and 61801170), Open research fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education, project of Education Department Cooperation Cultivation (Grant No. 201602011005 and No. 201702135098), China Postdoctoral Science Foundation (Grant No.Peer reviewedPublisher PD

Experimental study on LBL beams

Six specimens were made and tested to study the mechanical properties of LBL beams. The mean ultimate loading value is 68.39 MPa with a standard deviation of 6.37 MPa, giving a characteristic strength (expected to be exceeded by 95% of specimens) of 57.91 MPa, and the mean ultimate deflection is 53.3 mm with a standard deviation of 5.5 mm, giving the characteristic elastic modulus of 44.3 mm. The mean ultimate bending moment is 20.18 kN.m with a standard deviation of 1.88 kN.m, giving the characteristic elastic modulus of 17.08 kN.m. The mean elastic modulus is 9688 MPa with a standard deviation of 1765 MPa, giving the characteristic elastic modulus of 6785 MPa, and the mean modulus of rupture is 93.3 MPa with a standard deviation of 8.6 MPa, giving the characteristic elastic modulus of 79.2 MPa. The strain across the cross-section for all LBL beams is basically linear throughout the loading process, following standard beam theory

Competition and supply chain integration: a taxonomy perspective

Purpose - The purpose of this paper is to investigate the influence of competition on supply chain integration (SCI). Design/methodology/approach - Survey data from 617 manufacturers in China were used in this study. Taxonomy with cluster analysis was used to investigate the patterns of competition, and analysis of variance (ANOVA) was used to investigate the influence of these competition patterns on SCI. Findings - Seven competition patterns composed of local competition, international competition, and operational challenges were identified from the survey data. The ANOVA results showed that companies with different patterns achieved significantly different levels of SCI, indicating that higher levels of local competition, international competition, and operational challenges drove higher levels of SCI. Post hoc analyses revealed that international competition had stronger effects than local competition on SCI. Research limitations/implications - The data were collected from a single country, which may limit the generalization of the findings. The data were cross-sectional and thus lacked causal explanatory power. Practical implications - The findings provide suggestions for managers to use different configurations of SCI to adapt to different patterns of competition. Originality/value - This study makes three main contributions to the literature. First, it extends the research on the relationship between competition and cooperation to the supply chain management area. Second, it extends the concept of competition by incorporating not only competitive intensity, but also competitive scope and competitive capability. Third, the use of a configuration approach rather than a dimensional approach to investigate the effects of competition on SCI solves many methodological problems

The impact of organizational culture on supply chain integration: a contingency and configuration approach

Purpose - This study aims to bridge the gap in understanding the effects of organizational culture on supply chain integration (SCI) by examining the relationships between organizational cultures and SCI. The extant studies investigating the antecedents of SCI focus mainly on environments, interfirm relationships and other firm-level factors. These studies generally overlook the role of organizational culture. The few studies that do examine the effects of organizational culture on SCI show inconsistent findings. Design/methodology/approach - By placing organizational culture within the competing value framework (CVF), this study establishes a conceptual model for the relationships between organizational culture and SCI. The study uses both a contingency approach and a configuration approach to examine these proposed relationships using data collected from 317 manufacturers across ten countries. Findings - The contingency results indicate that both development and group culture are positively related to all three dimensions of SCI. However, rational culture is positively related only to internal integration, and hierarchical culture is negatively related to both internal and customer integration. The configuration approach identifies four profiles of organizational culture: the Hierarchical, Flexible, Flatness and Across-the-Board profiles. The Flatness profile shows the highest levels of development, group and rational cultures and the lowest level of hierarchical culture. The Flatness profile also achieves the highest levels of internal, customer and supplier integration. Research limitations/implications - This study is subject to several limitations. In theoretical terms, this study does not resolve all of the inconsistencies in the relationship between organizational culture and SCI. In terms of methodology, this study uses cross-sectional data from high-performance manufacturers. Such data cannot provide strong causal explanations, but only broad and general findings. Practical implications - This study reminds managers to consider organizational culture when they implement SCI. The study also provides clues to help managers in assessing and adjusting organizational culture as necessary for SCI. Originality/value - This study makes two theoretical contributions. First, by examining the relationships between organizational culture and SCI in a new context, the findings of the study provide additional evidence to reconcile the previously inconsistent findings on this subject. Second, by departing from the previous practice of investigating only particular dimensions of organizational culture, this study adopts a combined contingency and configuration approach to address both the individual and synergistic effects of all dimensions of organizational culture. This more comprehensive approach deepens our understanding of the relationship between organizational culture and SCI

Effects of Heavy Metals on Phyllosphere and Rhizosphere Microbial Community of Bothriochloa ischaemum

Copper mining has resulted in severe damage to the ecological environment of mining areas. This study investigated heavy metal distribution in plants and compared the driving factors between aboveground and subsurface microorganisms, as well as the diversity in rhizosphere and non-rhizosphere soil microbial community response to heavy metal transfer factors in a copper tailings dam. We analyzed phyllosphere and soil microbial community using high-throughput sequencing and denaturing gradient gel electrophoresis, respectively. Although we detected chromium in aboveground and subsurface of Bothriochloa ischaemum specimens, no chromium was detected in soil. Total nitrogen was negatively correlated to the carbon and nitrogen ratios of plants and soil, respectively, while the total sulfur was negatively correlated to cadmium in roots. On the contrary, soil sulfur was positively correlated to cadmium in soil. Moreover, soil sulphur was the main influencing factor on the soil bacterial community, while ammonium nitrogen, total nitrogen, and zinc were the driving factors of fungi diversity in non-rhizosphere soil. Fungi diversity in the rhizosphere was significantly correlated to phosphatase, and fungi diversity in the non-rhizosphere was significantly correlated to sucrose enzymes. The transfer factor of lead was negatively correlated to rhizosphere fungi diversity, and the transfer factor of copper was significantly correlated to non-rhizosphere bacterial diversity. Results from this study may offer some scientific reference for the improvement of plant-microbe remediation efficiency. At the same time, this study could provide an ecological basis for further studies on soil ecosystem restoration and degradation mechanisms that are associated with copper tailings dams