1,721,536 research outputs found
Figure 3 in A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Western Yunnan, China
No full textFigure 3. Specimens of Cyrtodactylus dianxiensis sp. nov. in preservative with the dorsal view on the top and the ventral view on the bottom. From left to right: male holotype (KIZ L2019044), juvenile (KIZ 059201), and male paratype (KIZ 2003170).Published as part of Liu, Shuo & Rao, Dingqi, 2021, A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Western Yunnan, China, pp. 713-731 in Journal of Natural History 55 (11-12) on page 721, DOI: 10.1080/00222933.2021.1921871, http://zenodo.org/record/546375
Figure 1 in A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Western Yunnan, China
No full textFigure 1. Bayesian inference tree of Indo-Burma clade Cyrtodactylus based on the ND2 gene and its flanking tRNAs. Branch support measures are Bayesian posterior probabilities (BPP).Published as part of Liu, Shuo & Rao, Dingqi, 2021, A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Western Yunnan, China, pp. 713-731 in Journal of Natural History 55 (11-12) on page 718, DOI: 10.1080/00222933.2021.1921871, http://zenodo.org/record/546375
Talent poaching and job rotation
Full text linkThe value of a firm’s service lies both in its workers and its relationship with clients. In this paper, we study the interaction between client-specific experience accumulated by workers, poaching behaviour from clients and strategic rotation of workers by firms. Using detailed personnel data from a security-service firm, we show that an increase in client-specific experience increases both the productivity of workers and their probability of being poached. The firm reacts to this risk by rotating workers across multiple clients, and more frequently so to those workers more likely to be poached. Furthermore, we find that after a policy change that prohibited poaching, the firm sharply decreased the frequency of rotation which in turn increased workers’ productivity. We propose a theoretical model that guides the empirical patterns and allows us to argue their external validity beyond our specific empirical setting. Finally, we provide survey evidence from the security service sector, demonstrating the consistency between our findings and industry observations
FIGURE 3 in Extension in distribution of Raorchestes parvulus (Boulenger, 1893) (Anura: Rhacophoridae) to China
No full textFIGURE 3. Dorsal and ventral views of KIZ 20160373 (a, b) and KIZ 20160374 (c, d) in life.Published as part of Yu, Guohua, Liu, Shuo, Hou, Mian, Li, Song & Yang, Junxing, 2019, Extension in distribution of Raorchestes parvulus (Boulenger, 1893) (Anura: Rhacophoridae) to China, pp. 381-391 in Zootaxa 4577 (2) on page 386, DOI: 10.11646/zootaxa.4577.2.10, http://zenodo.org/record/262965
Cyrtodactylus khasiensis Yang and Rao 2008
No full textCyrtodactylus khasiensis Yang and Rao 2008: 176 Holotype. KIZ L2019044, adult male, collected by Shuo Liu on 3 September 2018 from Tongbiguan Township, Yingjiang County, Dehong Autonomous Prefecture, Yunnan Province, China (24° 36′ 51″ N, 97° 35′ 2″ E, at an elevation of 1170 m asl). Paratype. KIZ 2003170, adult male, collected by Datong Yang on 14 May 2003 from Lvliang Village (elevation of 1200 m asl), Longchuan County, Dehong Autonomous Prefecture, Yunnan Province, China.Published as part of Liu, Shuo & Rao, Dingqi, 2021, A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Western Yunnan, China, pp. 713-731 in Journal of Natural History 55 (11 - 12) on pages 717-718, DOI: 10.1080/00222933.2021.1921871, http://zenodo.org/record/546375
A framework for the analysis of vibrations of structures with uncertain attachments
No full textAttachments affect the dynamic response of an assembled structure. When engineers are modelling structures, small attachments will often not be included in the “bare” model, especially in the initial design stages. The location of these attachments might be poorly known, yet they affect the response of the structure. This paper considers how attachments jointed to the structure at uncertain points, can be included in the dynamic model of a structure. Two approaches are proposed. In the time domain, a combination of component mode synthesis, characteristic constraint modes and modal analysis gives a computationally efficient basis for subsequent analysis using, for example, Monte Carlo simulation. The frequency domain approach is based on assembly of frequency response functions of bare structure and attachment. Numerical examples of a beam and a plate with a point mass added at an uncertain location are considered and predictions compared with experiment results
FIGURE 2 in Extension in distribution of Raorchestes parvulus (Boulenger, 1893) (Anura: Rhacophoridae) to China
No full textFIGURE 2. Bayesian phylogram of partial Raorchestes species inferred from 813 bp of 16S rRNA gene.Published as part of Yu, Guohua, Liu, Shuo, Hou, Mian, Li, Song & Yang, Junxing, 2019, Extension in distribution of Raorchestes parvulus (Boulenger, 1893) (Anura: Rhacophoridae) to China, pp. 381-391 in Zootaxa 4577 (2) on page 384, DOI: 10.11646/zootaxa.4577.2.10, http://zenodo.org/record/262965
Investigation of the Effect of Side Arm Orientation of the T-Junction on Gas-Liquid Stratified Flow
No full textT-junctions are important structures used in a number of industries to separate gas and liquid. This work studied the effect of the orientation of the side arm on the separation efficiency using a computational fluid dynamics (CFD) approach, and a new mechanical model is developed based on force analysis to predict the liquid carryout threshold. Laboratory experiments from published works are used to verify the CFD simulation and the new model. In this work, the angle of the side arm to the horizontal plane, alpha, and the angle of the side arm to the main arm's axial direction, beta, are investigated. The results show that with increasing beta, the liquid carryover threshold increases accordingly, demonstrating that the liquid can be more easily carried to the side arm, while the liquid-carrying performance in the side arm is not sensitive to the inclination angle, beta. Hence, in the new model, the inclination angle of is ignored. Experimental data are collected to validate the new model. The results show that this model can accurately predict the liquid carryover threshold, and the relative error is 4.16%
Effect of oil properties on spilled oil recovery using a mechanism coupling surface vortices and cyclone separation
No full textOil spills can cause severe harm and environmental pollution. Among the various treatment methods available, those that utilize hydrodynamic properties are more environmentally friendly and efficient. In this study, a free -surface vortex method was used to recover crude oil, and the flow process of crude oil with a high viscosity and density in a vortex was studied by conducting scale-scale laboratory experiments. The motion of the oil phase in the same-scale flow field was simulated using a commercial simulation software (ANSYS Fluent), and the tangential velocity distribution in the cylindrical coordinate system was used to reflect the motion of the oil phase. The experimental and simulation results demonstrate that a vortex can be used for oil recovery. The flow and recovery efficiency of crude oil were simulated and compared with the flow properties of a white oil with a low viscosity and density. Crude oil existed more in the form of large droplets in the flow, and the oil core was denser after forming a vortex. The experimental results revealed that the flow performance of crude oil was worse than that of white oil. The recovery efficiency of crude oil after passing through the vortex was lower than that of white oil. In addition, the recovery system was connected to a cyclone separation device. The feasibility of cyclone separation in offshore oil-water separation was verified by comparing the separation efficiency of the crude and white oils. The separation efficiency of crude oil was related to the split ratio. Within a certain range, the separation efficiency increases linearly with the split ratio. Combined with the principle model and numerical simulation results, the vortex motion was described in a three-dimensional space. The generalization of the application range of the recovery and separation method was summarized
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