Modeling Friction Performance of Drill String Torsional Oscillation Using Dynamic Friction Model by Xingming Wang, Ping Chen, Zhenhua Rui, Fanyao Jin

“…An improved theoretical model for the analysis of the frictional force was proposed based on microscopic contact deformation theory and a bristle model. The established model, an improved dynamic friction model established for drill strings in a wellbore, was used to determine the relationship of friction force changes and the drill string torsional vibration. …”
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Exploring the Links Between Employee Resilience and Career Satisfaction: The Roles of Job Crafting and STARA Awareness by Dilek Yılmaz Börekçi, Cem Güney Özveren, Merve Gerçek

“…Drawing on Job Demands-Resources Theory, this study explores the mediating effect of job crafting on the relationship between employee resilience and career satisfaction. …”
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A Review and Critique of Instructional Models for Physical Education by Mohsen Hallaji

“…Content failures encompass duplication of content, relative neglect to refer to existing scientific theories, lack of mentioning the integration patterns, the problem of teaching a book during a semester for a two-unit lesson, moderate and weak equation of specialized terminology, and uncertainty to translate book. …”
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Instability Model of a Coal Wall with Large Mining Height under Excavation Unloading Conditions by Lei Li, Feng zhang

“…On the basis of the stress field characteristics of surrounding rocks at a coal wall on a working face with a large mining height, the theories of unloading rock mass mechanics and fracture mechanics were used to establish a model of the excavation unloading field effect of the coal wall, and its instability mechanism under the action of unloading stress field was analyzed. …”
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Portfolio Selection with respect to the Probabilistic Preference in Variable Risk Appetites: A Double-Hierarchy Analysis Method by Ruitao Gu, Qingjuan Chen, Qiaoyun Zhang

“…Specifically, the first hierarchy quantifies investors’ risk appetite based on a historical simulation method and probabilistic preference theory. This hierarchy can be utilized to describe investors’ variable risk appetites and ensure the obtained investment ratios meet investors’ immediate risk requirements. …”
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Decision analytical methods for assessing the efficacy of agroecology interventions by Cory Whitney, Lisa Biber-Freudenberger, Eike Luedeling

“…Here, we review the literature and provide an overview of decision theory as a methodology for supporting decision-making in agroecology. …”
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AN ASSESSMENT OF THE IMPLEMENTATION OF PRIMARY HEALTHCARE PROGRAMMES IN LOKOJA LOCAL GOVERNMENT AREA OF KOGI STATE 2016 –2021 by Godsent Okenyi Adaji, E.E. Lawal, Timothy Onimisi

“…The study is theoretically guided by the David Easton’s System theory to interrogate the intervening variables that shapes the implementation of the policy within the study area. …”
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Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene by Nicole Creange, Costel Constantin, Jian-Xin Zhu, Alexander V. Balatsky, Jason T. Haraldsen

“…Using density functional theory with a local density approximation, we simulate the electronic band structure and show the effects of impurity doping (0–3.91%) in graphene on the electron density, refractive index, optical conductivity, and extinction coefficient for each doping percentage. …”
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Feature Extraction of Weak-Bearing Faults Based on Laplace Wavelet and Orthogonal Matching Pursuit by Lei Hou, Junxiao Zhao, Shiwei Dun, Yufeng Cai, Yang Yang, Junzhi Xu, Chuanzong Sun

“…In this paper, a transient feature extraction technique is proposed based on Laplace wavelet and orthogonal matching pursuit algorithm and combined with sparse representation theory. First, the overcomplete and redundant Laplace wavelet dictionary is adopted to represent vibration signals in a sparse way. …”
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Analytical Steady-State Model for the Free Radical Solution Copolymerization of Acrylonitrile and Vinyl Acetate and Their Charge-Transfer Complex in a Continuous Stirred Tank React... by Oscar Meza-Díaz, Juan-Carlos Tapia-Picazo, Adrian Bonilla-Petriciolet, Gabriel Luna-Bárcenas, Daniel Alcalá-Sánchez, José-Enrique Jaime-Leal, Pedro-Jesús Herrera-Franco

“…CTC formation between acrylonitrile (AN) and vinyl acetate (VA) was demonstrated using UV-VIS spectrophotometry and molecular orbital theory. The rate constants and equilibrium constants of the complexes were calculated from a model of the simultaneous participation of complexes and free monomers and the molar ratio method. …”
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Performance Improvement for Single-Photon LiDAR with Dead Time Selection by Lei Feng, Fenglin Wang, Meng An, Qiang Zhang

“…Based on the single-photon ranging theory, the dead time, measurement accuracy, and detection probability model of single-photon LiDAR are studied. …”
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Optimizing earning quality in bank finance: a theoretical model and empirical investigation in India by Ketan Mulchandani, Santanu K. Ganguli, Kalyani Mulchandani

“…Agency theory highlights that debt serves as a tool to monitor managerial behaviour of the borrowing firms. …”
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Probing and manipulating the Mexican hat-shaped valence band of In2Se3 by James Felton, Jordan Harknett, Joe Page, Zhuo Yang, Nada Alghofaili, James N. O’Shea, Laurence Eaves, Yoshimitsu Kohama, Mark T. Greenaway, Amalia Patanè

“…Its form changes following an irreversible structural phase transition of α-In2Se3 into β-In2Se3 via a thermal annealing in ultra-high vacuum. Density functional theory supports the experiments and reveals the critical contribution of spin orbit coupling to the form of the valence band. …”
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O moralnych obowiązkach ludzi wobec zwierząt. Etyka Gary’ego Francione by Dorota Probucka

“…The purpose of my article is to present and analyze the ethical views of Gary Francione – the leading, contemporary representative of the Animal Rights Movement. He built his theory by criticizing the views of two other supporters of the idea of animal liberation: Peter Singer and Tom Regan. …”
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Laser-induced coherent spin change due to spin-orbit coupling by In Cheol Yu, Jung Hyun Oh, Je-Ho Shim, Kab-Jin Kim, Byong-Guk Park, Dong-Hyun Kim, Kyoung-Whan Kim, Hyun-Woo Lee, Kyung-Jin Lee, Fabian Rotermund

“…By combining time-resolved MOKE measurements with density functional theory calculations, we demonstrate that a transient MOKE peak during laser pulse includes coherent spin excitation. …”
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100 Years of palaeo-research and its relevance for transformation and social cohesion in South Africa by Dipuo Kgotleng, Stella Basinyi, Wendy Black, Precious Chiwara-Maenzanise

“…This centennial milestone necessitates reflection on the role of science in society, with a critical look at the relationship between palaeosciences, the theories of human evolution, and the researcher’s interaction with southern African Indigenous peoples. …”
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Finite Element Analysis of Normal Pressure Hydrocephalus: Influence of CSF Content and Anisotropy in Permeability by K. Shahim, J.-M. Drezet, J.-F. Molinari, R. Sinkus, S. Momjian

“…The brain parenchyma is modelled as a porous medium fully saturated with cerebrospinal fluid (CSF) using Biot's theory of consolidation (1941). Owing to the existence of bundles of axons, the brain parenchyma shows locally anisotropic behaviour. …”
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Automated synthesis of technological fixture constructions by D P. Kunkevich, I. I. Polozkov, A. A. Baryshev

“…The method is based on location theory and involves the analysis of a solid model of the object being located. …”
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A Critique of the Scientific Nature of Literary Research Based on the Critical Evaluation of Books on the Methodology of Research in Persian Literature by Ghodsieh Rezvanian, Haleh Kiani Barforushi

“…The methodology presented in another part of the books is "an interpretative method"; most of these books have not addressed a critical methodology, and in some cases even critical theories are presented in an uncritical and interpretive nature. …”
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A fractal–fractional order modeling approach to understanding stem cell-chemotherapy combinations for cancer by Esam Y. Salah, Bhausaheb Sontakke, Ahmed A. Hamoud, Homan. Emadifar, Atul Kumar

“…In the analytical part, we study the existence of the solution and its uniqueness, which was studied based on the fixed point theory. The equilibrium points were also studied and discussed after stem cell therapy, and the approximate solutions for the given model were obtained using the Adam Bashford method, which depends on interpolation with Lagrange polynomials. …”
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