scholarly journals Thermomechanical Coupling and Transient to Steady Global Dynamics of Orthotropic Plates

2018 ◽  
pp. 483-499 ◽  
Author(s):  
Valeria Settimi ◽  
Giuseppe Rega
Keyword(s):  
Thermomechanical Coupling ◽  
Global Dynamics ◽  
Orthotropic Plates

scholarly journals Avoiding/inducing dynamic buckling in a thermomechanically coupled plate: a local and global analysis of slow/fast response

2018 ◽  
Vol 474 (2213) ◽  
pp. 20180206 ◽  
Author(s):  
Valeria Settimi ◽  
Giuseppe Rega ◽  
Eduardo Saetta
Keyword(s):  
Nonlinear Response ◽  
Mechanical Response ◽  
Global Analysis ◽  
Fast Response ◽  
Thermomechanical Coupling ◽  
Global Dynamics ◽  
Thermomechanical Model ◽  
Mechanical Buckling ◽  
Actual Plate ◽  
Technical Interest

The nonlinear response of a reduced model of an orthotropic single-layered plate with thermomechanical coupling is investigated in the presence of thermal excitations, in addition to mechanical ones. Different issues are addressed via accurate and extended local and global analyses. (i) Assessing the possible occurrence, disappearance or modification of mechanical buckling as a result of thermal aspects; (ii) exploiting global dynamics to unveil the effects of coupling; (iii) highlighting the crucial role played by the slow thermal transient evolution in modifying the fast steady mechanical response; (iv) framing the influence of coupling and underlining the need to use a thermomechanical model to grasp the actual plate dynamics; and (v) getting hints of technical interest as to the outcome robustness with respect to variations in the external/internal thermal parameters.

COVID-19 Pandemic: Experiences in China and Implications for its Prevention and Treatment Worldwide

2020 ◽  
Vol 20 (6) ◽  
pp. 410-416 ◽  
Author(s):  
Ning-Ning Liu ◽  
Jing-Cong Tan ◽  
Jingquan Li ◽  
Shenghui Li ◽  
Yong Cai ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
International Community ◽  
Disease Spread ◽  
Global Dynamics ◽  
The World ◽  
Prevention And Treatment ◽  
History Of

The outbreak of COVID-19 due to SARS-CoV-2 originally emerged in Wuhan in December 2019. As of March 22, 2020, the disease spread to 186 countries, with at least 305,275 confirmed cases. Although there has been a decline in the spread of the disease in China, the prevalence of COVID-19 around the world remains serious despite containment efforts undertaken by national authorities and the international community. In this article, we systematically review the brief history of COVID-19 and its epidemic and clinical characteristics, highlighting the strategies used to control and prevent the disease in China, which may help other countries respond to the outbreak. This pandemic emphasizes the need to be constantly alert to shifts in both the global dynamics and the contexts of individual countries, making sure that all are aware of which approaches are successful for the prevention, containment and treatment of new diseases, and being flexible enough to adapt the responses accordingly.

The global dynamics of stochastic Holling type II predator-prey models with non constant mortality rate

Filomat ◽  
2017 ◽  
Vol 31 (18) ◽  
pp. 5811-5825
Author(s):  
Xinhong Zhang
Keyword(s):  
Mortality Rate ◽  
Stochastic Model ◽  
Sufficient Conditions ◽  
Positive Periodic Solution ◽  
Global Dynamics ◽  
Type Ii ◽  
Predator Prey ◽  
Persistence In The Mean ◽  
The Mean ◽  
Predator Prey Models

In this paper we study the global dynamics of stochastic predator-prey models with non constant mortality rate and Holling type II response. Concretely, we establish sufficient conditions for the extinction and persistence in the mean of autonomous stochastic model and obtain a critical value between them. Then by constructing appropriate Lyapunov functions, we prove that there is a nontrivial positive periodic solution to the non-autonomous stochastic model. Finally, numerical examples are introduced to illustrate the results developed.

Researching the Localizations of the Global

2018 ◽  
pp. 72-92
Author(s):  
Saskia Sassen
Keyword(s):  
Global Dynamics ◽  
Data Sets ◽  
Global Studies ◽  
Research Techniques ◽  
The Creation

Although the global is often portrayed in opposition to the national, this chapter explores how the global can be structured inside the national in at least three ways that are significant for the field of global studies. They are a) the endogenizing or the localizing of global dynamics in the national milieu; b) the creation of formations that, although global, are articulated with particular actors, cultures, or projects; and c) the denationalizing of what had historically been constructed as national. Global studies research into such subnationally based processes and dynamics of globalization requires methodologies and theorizations that engage not only global scalings but also subnational scalings as components of global processes. It makes possible the use of long-standing research techniques in the study of globalization, and it provides a bridge between globalization and the wealth of national and subnational data sets.

scholarly journals Global dynamics of international migration systems across South–South, North–North, and North–South flows, 1990–2015

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Diego F. Leal ◽  
Nicolas L. Harder
Keyword(s):  
International Migration ◽  
Network Effects ◽  
Global Dynamics ◽  
Core Set ◽  
Migration Dynamics ◽  
Key Drivers ◽  
Migration Flows ◽  
And Migration ◽  
Migration Systems

AbstractEvidence from 184 countries over the span of 25 years is gathered and analyzed to understand North–North, South–South, and North–South international migration flows. Conceptually, the analysis borrows from network theory and Migration Systems Theory (MST) to develop a model to characterize the structure and evolution of international migration flows. Methodologically, the Stochastic Actor-oriented Model of network dynamics is used to jointly model the three types of flows under analysis. Results show that endogenous network effects at the monadic, dyadic, and triadic levels of analysis are relevant to understand the emergence and evolution of migration flows. The findings also show that a core set of non-network covariates, suggested by MST as key drivers of migration flows, does not always explain migration dynamics in the systems under analysis in a consistent fashion; thus, suggesting the existence of important levels of heterogeneity inherent to these three types of flows. Finally, evidence related to the role of political instability and countries’ care deficits is also discussed as part of the analysis. Overall, the results highlight the importance of analyzing flows across the globe beyond typically studied migratory corridors (e.g., North–South flows) or regions (e.g., Europe).

scholarly journals Interaction formulae for buckling and failure of orthotropic plates under combined axial compression/tension and shear

2021 ◽  
Author(s):  
Binwen WANG ◽  
Xiangming CHEN ◽  
Xiasheng SUN ◽  
Puhui CHEN ◽  
Zhe WANG ◽  
...  
Keyword(s):  
Axial Compression ◽  
Orthotropic Plates
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