We consider the problem of finding an energy-based formulation of the Navier-Stokes equations for reactive flows. These equations occur in various applications, e. g., in combustion engines or chemical reactors. After modeling, discretization, and model reduction, important system properties as the energy conservation are usually lost which may lead to unphysical simulation results. In this pap...

Port organizations have focused their efforts on physical or tangible assets, generating profitability and value. However, it is recognized that the greatest sustainable competitive advantage is the creation of knowledge using the intangible assets of the organization. The Balanced ScoreCard, as a performance tool, has incorporated intangible assets such as intellectual, structural and social c...

This paper is concerned with nonlinear model order reduction for electro-mechanical systems described by port-Hamiltonian formulae. A novel weighted balacend realization and model order reduction procedure is proposed which preserves port-Hamiltonian structure as well as stability, reachability and observability of the original system. This implies that one can utilize the intrinsic physical pr...

Actively promoting the development of trade at land ports China-Myanmar border holds significant importance for construction Economic Corridor and achieving in process economic globalization regionalization. Currently, there are issues with operation Houqiao Port Tengchong, such as a single commodity structure, weak port infrastructure, inefficient international logistics channels, inadequate p...

Currently, most traffic in the Internet backbone and access networks is World Wide Web (WWW) traffic. On the basis of recent long-time traffic traces we present characteristics of WWW traffic for different flow levels, namely port-to-port, host-to-host, and total client access. Using flow duration distributions, we obtain estimates for the point in time when a shortcut connection should be esta...

This paper focuses on the stabilization of port-controlled Hamiltonian systems employing possibly time-varying controllers. At first we refer to the generalized canonical transformation which preserves the structure of Hamiltonian systems and the passivity property that physical systems innately possess. Next we show a general stabilization strategy for port-controlled Hamiltonian systems based...

Series connected DC motor is a common nonlinear device mostly used in rated values since its nonlinear modeling makes difficult the efficient velocity control. Local and approximate controllers have been previously applied. In this paper a global nonlinear controller is proposed based on port controlled Hamiltonian systems equivalence, i.e. a suitably defined feedback controller results the ove...

The port industry is facing a dramatic wave of changes that have transformed the structure of the industry. Modern seaports are increasingly shifting from a “hardware-based” approach towards “knowhow intensive” configuration. In this context knowledge resources, learning processes and training initiatives increasingly represent key elements to guarantee the quality of service supplied and hence...

This work presents the design of a compact dual-port circularly polarized antenna based on new coupler topology. The can radiate right-hand circular polarization (RHCP) in two opposite directions depending input port. In proposed structure, radiating system has three inverted F antennas connected to 120∘ hybrid coupler. modeling and 5-ports are described experimentally validated. prototype is f...

This paper demonstrates three SAW configurations' electrical and mechanical behaviors: a one-port resonator, two-port delay line that works as temperature sensors of around 440 MHz characteristic frequencies. We investigate the sensitivity for temperatures up to 200 °C. A linear behavior frequency shift versus is observed; resulting evaluated at 22.74 ppm/°C 23.17 3.83 ns/°C structure. The elec...