Results 21 to 30 of about 1,077,717 (311)

Theoretical analysis of serrated chip formation based on ideal models in high speed cutting [PDF]

open access: yes, 2010
In this paper, two ideal formation models of serrated chips, the symmetric formation model and the unilateral right-angle formation model, have been established for the first time. Based on the ideal models and related adiabatic shear theory of serrated
Gao, Chongyang   +5 more
core   +1 more source

Approach to theoretical perspectives of “sexual harassment”: review and bibliometric analysis from social sciences

open access: yesFrontiers in Psychology, 2023
The main goal of this paper is to give an overlook of the current state of sexual harassment. In order to do so, we started making a synthesis of the main theoretical approaches to explain sexual harassment, trying to group the studies into different ...
Cristina Cuenca-Piqueras   +2 more
doaj   +1 more source

Theory into Practice: An Overview of Historical Leadership Theories and Approaches

open access: yesEDIS
The Theory into Practice series is designed to outline a chronological perspective of leadership theories and approaches. Each article will highlight a theoretical perspective or leadership approach, a scenario in which the theory or approach can be or ...
Megan S. Cantrell
doaj   +3 more sources

Z-plasty: a comparative study between theoretical and practical elongation [PDF]

open access: yesRevista Brasileira de Cirurgia Plástica, 2016
INTRODUCTION: The study of the final elongation values produced by 45º, 60º, 75º, and 90º-angle z-plasties performed on the skin of the lower abdomen of fresh cadavers were compared with the theoretical mathematical data published in the literature.
Flavia Carnovale Lima   +4 more
doaj   +1 more source

Game-theoretic models

open access: yes, 2021
Game theory is a tool to model and discover social mechanisms. The aim of this chapter is to show how the tool can be used by engaging the reader's interest in the game-theoretic modelling of social dilemmas. Social dilemmas are situations in which several agents face a decision conflict because of their interdependence.
openaire   +1 more source

Theoretical Challenges for Distance Education in the 21st Century: A Shift from Structural to Transactional Issues

open access: yesInternational Review of Research in Open and Distributed Learning, 2000
Randy Garrison Abstract The premise of this article is that theoretical frameworks and models are essential to the long-term credibility and viability of a field of practice. In order to assess the theoretical challenges facing the field of distance
Randy Garrison
doaj   +1 more source

Explicit kinetic heterogeneity: mathematical models for interpretation of deuterium labeling of heterogeneous cell populations. [PDF]

open access: yes, 2010
Estimation of division and death rates of lymphocytes in different conditions is vital for quantitative understanding of the immune system. Deuterium, in the form of deuterated glucose or heavy water, can be used to measure rates of proliferation and ...
Rob J De Boer   +8 more
core   +1 more source

Field Theoretical Study of Disorder in Non-Hermitian Topological Models [PDF]

open access: yes, 2022
Non-Hermitian systems have provided a rich platform to study unconventional topological phases.These phases are usually robust against external perturbations that respect certain symmetries of thesystem.
Eek, Lumen   +3 more
core   +1 more source

Complexity of the Basic Reproduction Number (R0)

open access: yesEmerging Infectious Diseases, 2019
The basic reproduction number (R0), also called the basic reproduction ratio or rate or the basic reproductive rate, is an epidemiologic metric used to describe the contagiousness or transmissibility of infectious agents.
Paul L. Delamater   +4 more
doaj   +1 more source

Implications of b →sγ in the Weinberg Three-Higgs-Doublet Models [PDF]

open access: yes, 2011
[[abstract]]Using recent experimental measurements on Br(b →sγ) from CLEO, we study the constraints on the charged Higgs sector in various three-Higgs-doublet models.
Darwin Chang;Chuan-Hung Chen;Chao-Qiang Geng
core   +1 more source

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