Lingnan Normal University

www.lingnan.edu.cn
Chikan, China
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Zhao Y.,Lingnan Normal University
Journal of Computational and Theoretical Nanoscience | Year: 2017

Physical education teaching in colleges and universities is a complicated project for systematic optimization with multiple factors. As a vital approach to enhance the quality of physical education teaching in colleges and universities, it is of great importance to have a scientific, accurate and objective evaluation of physical education teaching. The thesis, on the one hand, analyzes the existent problems during the evaluation course of physical education teaching in colleges and universities; and on the other hand, discusses the related improved measures on the aforementioned basis. In order to update the evaluation index system of physical education teaching in colleges and universities, the thesis, based on the multiple intelligence theory, constructs an evaluation index system of physical education from all-round aspects, i.e., teaching step, teaching and learning step as well as managing step. Furthermore, according to the weight of various evaluation indexes on the foundation of AHP method, plus with the involvement of fuzzy evaluation information, the thesis puts forward with a comprehensive fuzzy evaluation model of physical education teaching in colleges and universities. This model serves as an attempt to effectively evaluate physical education teaching, the validity of which is proved in the case analysis part. Copyright © 2017 American Scientific Publishers.


Zhou X.,Lingnan Normal University
Systems and Control Letters | Year: 2017

This paper addresses the study of the integral-type approximate controllability of linear parabolic integro-differential equations. This new controllability is defined by imposing some additional integral-type constraints on the usual approximate controllability and therefore, can be used to keep the state close to the target. The paper is concerned with a special choice of integral kernels, which are multiples of the same exponential function. We reduce the problem of new controllability to the obtention of a unique continuation property for the suitable adjoint system. © 2017 Elsevier B.V.


Chen X.,Lingnan Normal University
Proceedings of the IEEE International Conference on Software Engineering and Service Sciences, ICSESS | Year: 2017

Crowdsourcing platforms such as Amazon Mechanical Turk, CrowdFlower and Clickworker have rapidly gained the popularity as they allow outsourcing tasks to a group of people through an open call. By combining the power of human intelligence tasks can be solved in cheap cost and short completion time in crowdsourcing platforms. However quality control still remains a challenge since spammers in crowdsourcing platforms may submit unreliable answers. To identify the spammer involved in crowdsourcing projects, this paper analyzes labelers' behavioral characteristics (e.g., response time) in the Baidu Crowdsourcing Platform (BCP). By doing so, we gain insight into the complex interactions between the labelers and the projects conducted in crowdsourcing platforms. Based on the above analysis results, a probabilistic model is furthermore constructed to obtain objective measures of labeler reliability. In particular, our approach attempts to combine the labeler behavioral characteristics to identify spammer. Furthermore, we develop a real-Time anti-spamming system so as to identify spammers while projects are conducted in BCP. Finally, we implement comprehensive experiments to evaluate our approach on the real projects that have been published in BCP. The experimental results and performance comparisons with baseline models show that our method can identify spammers timely and effectively. © 2016 IEEE.


The tunneling radiation of particles from black holes in Lovelock-Born-Infeld (LBI) gravity is studied by using the Parikh-Wilczek (PW) method, and the emission rate of a particle is calculated. It is shown that the emission spectrum deviates from the purely thermal spectrum but is consistent with an underlying unitary theory. Compared to the conventional tunneling rate related to the increment of black hole entropy, the entropy of the black hole in LBI gravity is obtained. The entropy does not obey the area law unless all the Lovelock coefficients equal zero, but it satisfies the first law of thermodynamics and is in accordance with earlier results. It is distinctly shown that the PW tunneling framework is related to the thermodynamic laws of the black hole. © 2017 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.


Chen Z.,Lingnan Normal University
Procedia Engineering | Year: 2017

3D printing is a technology of rapid prototyping. It can effectively respond to the needs of customers and help to achieve the Service-oriented manufacturing. Here the reconstruction of personalized toy manufacturing through 3D printing was studied. Then it was evaluated in three aspects, the integration of resources, the product increment and the business model innovation. The conclusion showed that, the Service-oriented manufacturing based on 3D printing could not only effectively respond to customer needs, but also get rid of the traditional process constraints, and shorten the R&D period. That would realize the collaborative management of product life cycle. This kind of mode is an effective solution for the realization of the material personalization. © 2017 The Authors. Published by Elsevier Ltd.


Mo J.-X.,Lingnan Normal University
European Physical Journal C | Year: 2017

The critical phenomena of dilaton black holes are probed from a totally different perspective other than the P–v criticality and the q–U criticality discussed in former literature. We investigate not only the two point correlation function but also the entanglement entropy of dilaton black holes. For both the two point correlation function and the entanglement entropy we consider 4 × 2 × 2 = 16 cases due to different choices of parameters. The van der Waals-like behavior can be clearly witnessed from all the T–δL (T–δS) graphs for q< qc. Moreover, the effects of dilaton gravity and the spacetime dimensionality on the phase structure of dilaton black holes are disclosed. Furthermore, we discuss the stability of dilaton black holes by applying the analogous specific heat definition and remove the unstable branch by introducing a bar T= T∗. It is shown that the first order phase transition temperature T∗ is affected by both α and n. The analogous equal area laws for both the T–δL graph and the T–δS graph are examined numerically. The relative errors for all cases are small enough so that we can safely conclude that the analogous equal area laws hold for T–δL (T–δS) graph of dilaton black holes. © 2017, The Author(s).


Mo J.-X.,Lingnan Normal University | Li G.-Q.,Lingnan Normal University
Nuclear Physics B | Year: 2017

We revisit the Hawking temperature–entanglement entropy criticality of the d-dimensional charged AdS black hole with our attention concentrated on the ratio TcδSEcQc. Comparing the results of this paper with those of the ratio TcScQc, one can find both the similarities and differences. These two ratios are independent of the characteristic length scale l and dependent on the dimension d. These similarities further enhance the relation between the entanglement entropy and the Bekenstein–Hawking entropy. However, the ratio TcδSEcQc also relies on the size of the spherical entangling region. Moreover, these two ratios take different values even under the same choices of parameters. The differences between these two ratios can be attributed to the peculiar property of the entanglement entropy since the research in this paper is far from the regime where the behavior of the entanglement entropy is dominated by the thermal entropy. © 2017 The Authors


Mo J.-X.,Lingnan Normal University | Li G.-Q.,Lingnan Normal University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2015

In this paper, we investigate the coexistence curves and molecule number densities of f(R) anti-de Sitter (AdS) black holes and Gauss-Bonnet AdS black holes. Specifically, we work with the reduced parameter space and derive the analytic expressions of the universal coexistence curves that are independent of theory parameters. Moreover, we obtain the explicit expressions of the physical quantity describing the difference of the number densities of black hole molecules between the small and large black holes. It is found that both the coexistence curve and the difference of the molecule number densities of f(R) AdS black holes coincide with those of Reissner-Nordström-AdS black holes. It may be attributed to the same equation of state they share in the reduced parameter space. The difference of the molecule number densities between the small and large Gauss-Bonnet AdS black holes exhibit different behavior. This may be attributed to the fact that the charge of the Reissner-Nordström-AdS black hole is nontrivial. Our research will not only deepen the understanding of both the physics along the coexistence curve and the underlying microscopic freedom of AdS black holes but also highlight the importance of the law of the corresponding states. © 2015 American Physical Society.


Miao W.,Lingnan Normal University | Yang D.,CAS Beijing National Laboratory for Molecular | Liu M.,CAS Beijing National Laboratory for Molecular
Chemistry - A European Journal | Year: 2015

Abstract A new class of homologous gelators, LG12-(CH2)n-BSA, composed of bipyridinyl groups, L-glutamic moieties having double dodecyl chains, and linked alkyl spacers with different lengths were synthesized. It was found that these gelators could immobilize medium-polarity solvents readily and the behaviors of these gels showed a dependence on the spacer length. Of all the gels, the LG12-(CH2)11-BSA gels exhibited self-healing property and multiple-stimulus responsibility, such as heating, shaking, and sonication. The investigation of CD spectra indicated that the supramolecular chirality, which was attributed to the chiral transfer from the chiral center to the assemblies, was also closely related to the length of methylene spacers. The longer the alkyl spacers, the weaker the transmitted supramolecular chirality. Only LG12-(CH2)1-BSA gelators, which had the shortest spacers, formed right-handed nanoscale chiral twists owing to crowded hydrogen bonding interactions. Moreover, the high-polarity solvent DMF was found to be able to regulate the chiral twist as well as its pitch length readily. A new twist on healing: Self-healing supramolecular gels that are responsive to multiple stimuli were developed. The formation of nanoscale twists could be controlled by the length of the methylene spacers of the gelator molecules. The pitch of these twists could be regulated by DMF. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Mo J.-X.,Lingnan Normal University
Modern Physics Letters A | Year: 2015

The thermodynamic geometry of black holes with conformal anomaly has been investigated in this paper. We study two classical kinds of thermodynamic geometry. Namely, Weinhold geometry and Ruppeiner geometry. It is shown that the condition when Weinhold scalar curvature diverges is the same as the phase transition condition characterized by the divergence of specific heat. It is also shown that Ruppeiner scalar curvature not only reveals the phase structure but also contains the information of Hawking temperature. In a word, both Weinhold metric and Ruppeiner metric can correctly reproduce the phase structure of black holes even when conformal anomaly is taken into consideration. © 2015 World Scientific Publishing Company.

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