External Fractional-Order Gradient Vector Perona-Malik Diffusion for Sinogram Restoration of Low-Dosed X-Ray Computed Tomography by Shaoxiang Hu

“…Therefore, we adopt a novel fractional-order diffusion scheme, named external fractional-order gradient vector Perona-Malik diffusion (EFOGV-PMD), by only replacing integer-order derivatives of “external” gradient vector to their fractional-order counterparts while keeping integer-order derivatives of gradient vector for diffusion coefficients since the ability of edge indicator for 1-order derivative is demonstrated both in theory and applications. Here “external” indicates the spatial derivatives except for the derivatives used in diffusion coefficients. …”
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Reimagining South African political campaigns through indigenous language posters in the 4IR: A political communication perspective by Fulufhelo Oscar Makananise

“…The study was underpinned by a theory of communication in political campaigns to ascertain the importance of communication or linguistic features in political campaign posters. …”
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Affects of Resistance: Candomblé Rituals in Contemporary Brazilian Fiction by Parvathi M. S.

“…The paper examines how Afro-Brazilian religious rituals facilitate political mobilization and agential potentialities using insights from affect theory. …”
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Kinematic Analysis and Optimization of Jerk Considering Elasticity of Weightlifting Bar and Damping Effect of Body in Clean and Jerk by Min Hyok Jon, Un‐Ryong Rim

“…Besides, spring constant is calculated by theory of bending of beam, as well. Finally, an optimal control problem based on the proposed kinematic model is formulated to optimize the jerk. …”
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Analysis of Meshing Stiffness of Variable Hyperbolic Arc Gear based on Finite Element Method by Jianping Gou, Li Hou, Yang Wu, Pei Luo, Qi Zhang, Dengqiu Ma

“…In order to study the meshing stiffness of variable hyperbolic arc gear， the tooth surface equation of variable hyperbolic arc gear is obtained according to the forming principle， and its accurate three-dimensional model is established. Based on the theory of contact finite element analysis， the calculation method of meshing stiffness is studied. …”
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The Impact Behavior between Coal Gangue Particles and the Tail Beam Based on Rock Failure by Zhengyuan Xin, Qingliang Zeng, Yang Yang

“…First, this paper incorporates the theory of rock failure and energy consumption to assess the impact process of coal gangue particles on the tail beam. …”
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Analysis and Establishment of the Isothermal Elastohydrodynamic Lubrication Model of the Cylindrical Gear with Arcuate Tooth Trace by Zhou Bo, Hou Li, Wei Yongqiao, Li Bo

“…The cylindrical gear with arcuate tooth trace has advantages of high bearing capacity,high contact strength and steady transmission,etc.But there are also failure modes such as the wear of tooth surface,pitting and scuffing when it drives,it is mainly because of the bad lubricating condition.So ensuring that it is always in good lubricity would be critical.After analyzing the meshing contact process of cylindrical gears with arcuate tooth trace,the contact model of gears is simplified.Based on the elastohydrodynamic lubrication theory,the physical and mathematical model of isothermal elastohydrodynamic lubrication for the cylindrical gear with arcuate tooth trace are established.Through the direct iterative method and Fortran procedure,the numerical solution of the model is solved and the characteristic curves of oil film are got.The influences that entrainment velocity,load and viscidity bring to lubrication characters of the cylindrical gear with arcuate tooth trace are analyzed and compared.The results show the entrainment velocity is the most important cause for the oil film thickness,the viscidity has important influences both on the oil film pressure and thickness,and the load influences less relative to other two factors.Besides,using the oil film thickness ratio,the lubrication state of gears could be estimated,which helps keeping gears approach the elastohydrodynamic lubrication state when designing.…”
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Design models of secret reconstruction towards rational users by Hai LIU, Youliang TIAN, Ying TANG, Jianbing Ni, Jianfeng MA

“…Rational Secret Reconstruction is an intersection between traditional secret reconstruction and game theory, which aims to restrict the selfish behaviors of rational users, making both of them obtain the secret in real applications.However, when directly adopting the existing rational secret reconstruction protocols, it is infeasible to realize the fair secret reconstruction.More seriously, an extreme situation may rise, which is some users regard a fake secret as the real one.The crucial reason is that, due to lack of design models, the protocol designers cannot completely consider their selfish behaviors when rational users participate in secret reconstruction.To solve that problem, through the formalizations of rational users and rational secret reconstruction game, the influences of rational users’ action order and their chosen strategies about the fair secret reconstruction were analyzed, and then, three design models for the different scenarios, including purely user rational scenario, reputation-based scenario and trusted user-based scenario, were proposed respectively.Theoretical analysis demonstrates that, the proposed models can help the designers restrict rational users’ selfishness effectively, thereby guiding the designers to devise the fair rational secret reconstruction protocols.Additionally, under the guidance of the proposed models, a fair rational secret reconstruction protocol was devised, which indicated that the proposed models were usable.…”
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Properties of the wormhole model in de Rham–Gabadadze–Tolley like massive gravity with specific matter density by Piyali Bhar

“…In de Rham–Gabadadze–Tolley (dRGT) massive gravity theory, we produce two types of WH solutions in our present paper. …”
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WBS-Based Method in Teaching Management Information Project by Yuling Su

“…A work breakdown structure (WBS) based project management theory and work structure decomposition method are proposed. …”
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Former les enseignants à l’analyse didactique. Un cas en histoire by Sylvain Doussot

“…It emerges from the analysis that the main condition for the learning observed in the appropriation of concepts by this student consists of a process of continuous comparison, in the sense of Grounded Theory (Glaser and Strauss, 1967), framed by the action of the trainer. …”
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Local English teachers’ voices from a marginalized lens: Inequality practices and identity construction in the workplace by Sahril Nur, Ismail Anas, Reski Pilu, Nurfajriah Basri

“…Grounded in the social theory of power, privilege, and positional identities, three synchronous online interviews were conducted to explore the LETs voices about what it means to experience the equality of rights and obligations in the workplace. …”
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Music’s ability to foster prosocial behavior: a teleofunctionalist perspective by Jin Hyun Kim

“…Drawing on recent interdisciplinary music research—biologically or developmental psychologically oriented—which conceptualizes music as a communicative toolkit primarily serving affiliative communicative interaction, this paper investigates the question of whether and to what extent music is capable of fostering prosocial behavior within the framework of teleofunctionalism—a philosophical theory of mind. A teleofunctionalist perspective allows us to specify this question as follows: To what extent might a function of establishing affiliative socio-interactional relationships be considered a proper function of music, a concept suggested by philosopher Ruth Millikan? …”
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Study on Flood Risk Transfer Mechanisms in the Pearl River Basin by TANG Meng, HE Li, YIN Chuang, LIU Jia

“…For the Pearl River Basin, in order to study the decay/amplification effect of themulti-risk source transfer process, and to identify the temporal and spatial evolutioncharacteristics and transfer mechanisms of flood risk, based on the four-factor theory ofdisasters, this paper selects 11 indexes with an overall consideration of disaster-inducingfactors, hazard-inducing environment, hazard-bearing body and hazard prevention and mitigationcapabilities, constructs an assessment model of flood risk, and builds a Markov chain risktransfer model by GIS technology to study the spatial and temporal evolution and transfermechanisms of flood risk in the Pearl River Basin. …”
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Analysis of High Speed Gearbox Oil Injection Lubrication Under Negative Pressure Based on the CFD by Zhang Hong, Huang Bo, Ding Yiqun, Qiu Linyue, Lu Haoran

“…In order to improve the transmission efficiency of the gear transmission system and the service life of the gear pair, it is necessary to study the spread of the lubricating oil on the tooth surface in the high-speed gearbox and explore the best injection lubrication parameters. Based on the theory of computational fluid dynamics（CFD), the finite element simulation model of high linear speed gear oil injection lubrication under negative pressure is established. …”
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THE ROLE OF SOCIAL MEDIA ADVOCACY ON DRUG ABUSE AMONG THE YOUTHS IN OWO LOCAL GOVERNMENT by Adeyefa Christianah Ronke, Awofadeju Peter Olayinka

“…This paper employed Agenda setting theory. Moreover, this study adopted survey design method and Owo local government areawas selected as area of the study. …”
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Improvement in the Gain of UWB Antenna for GPR Applications by Using Frequency-Selective Surface by Iftikhar Ud Din, Sadiq Ullah, Syeda Iffat Naqvi, Raza Ullah, Shakir Ullah, Esraa Mousa Ali, Mohammad Alibakhshikenari

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From Determinism and Probability to Chaos: Chaotic Evolution towards Philosophy and Methodology of Chaotic Optimization by Yan Pei

“…We present and discuss philosophy and methodology of chaotic evolution that is theoretically supported by chaos theory. We introduce four chaotic systems, that is, logistic map, tent map, Gaussian map, and Hénon map, in a well-designed chaotic evolution algorithm framework to implement several chaotic evolution (CE) algorithms. …”
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Neo-Kantian Question on Method, the Problem of Form and the Meaning of Variability in Gustav Shpet and Ernst Cassirer’s Philosophy by Nikolai B. Afanasov

“…To prove this thesis I first look at the philosophy of Gustav Shpet who creatively interpreted the German tradition and proposed an original project of his own, and then I examine the theory of Ernst Cassirer, an outstanding representative of Neo-Kantianism who in the later period of his work proposed considering the phenomena of the humanities to be symbolic forms closest to the spontaneity of the biological. …”
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Design of microwave ceramic waveguide filter with high out-of-band suppression characteristics by Fei LIANG, Shunliang MENG, Wenzhong LYU

“…The design theory of ceramic waveguide filter was introduced, and then the combination structure of coupling through slot with shallow or deep coupling blind hole was designed, which could meet the requirements of positive and negative coupling bandwidth.By adjusting the cross coupling between 3～6 cavities, the symmetry of the filter transmis-sion curve was improved, and the near and far end band suppression of the filter was realized.Finally, a six-cavity ce-ramic waveguide filter for 5G base station was designed.In the process of optimizing the filter, the influences of the rela-tive position offset of the cross-coupling through slot and the length of the cross-coupling through slot on the transmis-sion zero position, the near end and far end out of band suppression characteristics of the filter were discussed in detail, and the relevant change rules were given.The performance indexes of the optimized filter were as follows, center fre-quency was 3.5 GHz, working bandwidth was 200 MHz, insertion loss ≤ 1.2 dB, return loss ≥ 17 dB, near end out of band rejection ≥ 25 dB, far end out of band rejection ≥ 51 dB.According to the structural parameters of the simulation model, the performance test results of the samples are in good agreement with the simulation results.…”
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