Results 111 to 120 of about 2,083,159 (309)

Riccati Equations in Nash and Stackelberg Differential and Dynamic Games

, 2017
The purpose of this paper is to provide an overview of various types of Riccati differential and difference equations (RDEs) and the associated algebraic Riccati equations (AREs) that arise in various classes of linear quadratic (LQ) differential and ...
Moon, Jun, Başar, Tamer
core   +1 more source

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

Robust Tracking Control of Underactuated UAVs Based on Zero-Sum Differential Games

Drones
This paper investigates the robust tracking control of unmanned aerial vehicles (UAVs) against external time-varying disturbances. First, by introducing a virtual position controller, we innovatively decouple the UAV dynamics into independent position ...
Yaning Guo, Qi Sun, Quan Pan
doaj   +1 more source

An extremal control in differential games [PDF]

, 1975
Let us consider a system $$\frac{{dx}}{{dt}} = f(t,x,u,v);x \in {R^{n}},u \in P \subset {R^{P}},v \in Q \subset {R^{q}}$$ (1) .
openaire   +1 more source

Thermal Cycle–Microstructure–Property Relationships in Rail Steel Heat‐Affected Zone Simulated by Gleeble

Advanced Engineering Materials, EarlyView.
Microstructural evolution of premium rail steel during flash butt welding (FBW), comparing physically simulated heat‐affected zones with actual weld regions. Thermal cycles induce phase transformations and microstructural heterogeneity that influence weld quality and mechanical performance. These findings provide insights into optimizing FBW parameters
Emmanoelle Cintra da Cunha Araújo, João Marcos da Silva Nunes, Marcelly Cristiny Nunes de Carvalho, Alex Rojas, Cristie Luis Kugelmeier, Cristhian Ricardo Loayza Loayza, João Carlos Ferreira, Maria Veronica Goncalves Rodrigues, Rute Sayuri Kano, Isaac Araújo Furtado, Jacyara Dalylla da Silva Nunes, Jhonatan Peres de Sousa, Marcos Natan da Silva Lima, Eden Santos Silva, Gedeon Silva Reis, Samuel Filgueiras Rodrigues   +15 more
wiley   +1 more source

A conceptual framework for serious games and its validation

, 2010
This research introduces a conceptual framework for the design of serious games and uses the Technology Acceptance Model (TAM) for its validation.
Yusoff, Amri
core   +1 more source

Bandwagon effect, free-rider effect, tragedy of the commons: collaborative governance of marine pollution

Frontiers in Marine Science
The issue of marine pollution is becoming one of the core challenges in global environmental protection, particularly when it comes to coordinating governance among nations and stakeholders.
Yu Gu
doaj   +1 more source

Microstructural Evolution and In Situ Formation of TiB and TiC in Ti─5Al─2.5Sn Alloy Processed by Powder Metallurgy

Advanced Engineering Materials, EarlyView.
Accelerated in situ formation of TiB and TiC in Ti–5Al–2.5Sn–B4C is driven by transient liquid phase formation, which enhances particle reactions and microstructural evolution. This process increases hardness and establishes a coupled relationship between sintering temperature and reinforcement content, strongly influencing porosity in the resulting ...
Fernando. Y. Kojima, Juliano. Soyama
wiley   +1 more source

Mission relationships, employment relationships, or alliance relationships: wetland management from the perspective of carbon trading

Frontiers in Ecology and Evolution
In recent years, wetland ecosystems have faced severe degradation, prompting governments to provide carbon compensations to enterprises engaged in wetland conservation efforts.
Shansong Wu, Yuntao Bai, Jiahao Li, Yueling Yang   +3 more
doaj   +1 more source

Microstructural, Mechanical, and Textural Evolution of Dissimilar Combination of Laser‐Welded Maraging Steel and 4340 Steel

Advanced Engineering Materials, EarlyView.
The present work reports the microstructural, mechanical, and texture evolution of a dissimilar combination laser‐welded maraging steel with 4340 steel. This is important for aerospace applications. The demand for dissimilar welding is growing rapidly with the requirement of efficient and durable joints.
Bharat Behl, Yu Dong, Alokesh Pramanik, Tapas Kumar Bandyopadhyay   +3 more
wiley   +1 more source