Abstract: AbstractThis study examines how self-organizing groups function during crisis response in China’s centralized system. Through case analysis of a Shanghai community during COVID-19, we investigate how emergent citizen groups ...

Abstract: Focusing on the collaborative fuel supply and acceleration problem of multicombustor turbine engine, a variable geometry composite regulation acceleration control law design method based on the combination of compressor ...

Abstract: In order to overcome the problem of significant drop in operational efficiency remarkably while power turbine speed varies among a large range, an optimal speed control method of multiple turboshaft engines based on ...

Abstract: The fundamental principle of the transient state control method for turbofan engines, which is based on the acceleration ratio of high-pressure rotational speed (N-dot), involves sacrificing a portion of the safety margin ...

Abstract: AbstractVulnerability assessment of water distribution networks (WDNs) is essential for supply reliability and resilience to disruptions. Conventional methods often overlook pipeline physical heterogeneity, multiscale ...

Abstract: Finitelength line contact conditions, existing in applications such as gears or roller bearings, lead to subsurface stress distribution influenced by the free boundaries. This paper presents a semianalytical method (SAM) ...

Abstract: Elastohydrodynamic lubrication (EHL) analysis in finite line contacts is usually modeled by a finite-length roller contacting with a half-space, which ignores effect of the two free boundaries existing in many applications ...

Abstract: To clarify the realistic upstream boundary conditions of hydrodynamic bearings, the oil spread in a complex system of parallel plates including an inlet tube and axial groove is studied by the computational fluid dynamics ...