Data mining technique, classification and prediction has improved and used in medical domain to helping medical practitioner in making their decisions. As medical data is highly sensitive to personal information of hu...
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Wheeled Mobile Robot (WMR) is extremely important for active target tracking control and the reactive obstacle avoidance in an unstructured environment. Fuzzy control provides a mechanism for incorporating human-like ...
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CO2 capture of from industrial gases is an important and viable strategy for worldwide effort to reduce the human contribution to climate change. Stationary sources of CO2 as power plants, oil refineries, gas processi...
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ISBN:
(纸本)9788895608051
CO2 capture of from industrial gases is an important and viable strategy for worldwide effort to reduce the human contribution to climate change. Stationary sources of CO2 as power plants, oil refineries, gas processing plants, cement plants, iron and steel plants basically use fossil fuels as feedstock. The aim of this work is to formulate and validate a mathematical model for the first step (absorption with chemical reaction in NaHCO3/Na2CO3 buffer solutions) for CO2 capture from flue gas with blue-green algae (species Spirulina) in fotobioreactors. Physical/mathematical models are developed for a series of continuous stirred tank reactors (CSTR). Gas-liquid mass transfer with chemical reaction, specific to CO2-buffer solution Na2CO3/NaHCO3 system, is taken into account. Physical/chemical equilibrium/kinetic model parameters (equilibrium constants as well as kinetic constants) are considered to formulate and to implement the model in gPROMS. This model can be reused for process modelling in the second step (CO2 capture by blue-green algae, species Spirulina, in fotobioreactors). The authors gratefully acknowledge the financial support provided by Romanian National Programme PNII grants no. 22085/PARTNERIATE, and technical support from PSE Enterprise Ltd for providing academic license of gPROMS to our university.
One of the most important issues in electrical modeling of physiological system is to find an effective way of making the most accurate equivalent electrical circuit. For this reason, in this research a new way of cal...
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A five link biped human model is considered for understanding the system which underlies the bipedal walking. These five links consist of torso, femurs and thighs. The phases which generate the bipedal walking are des...
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ISBN:
(纸本)9814291269
A five link biped human model is considered for understanding the system which underlies the bipedal walking. These five links consist of torso, femurs and thighs. The phases which generate the bipedal walking are described. Next, the kinematic and dynamic equations which compose the motions of the phases are explained in detail. Finally, the corresponding desired trajectories the model joints are discussed and the system describing the model's behavior in the single support phase (SSP) is constructed by using the equations which are mentioned before. However, an accurate model of biped model is not achieved, due to the existence of uncertainties of various kinds such as unmodeled dynamics and parameters. With this study, bipedal human motion is described fundemantally in mathematical shape and the inverse dynamic analysis of motion is discussed.
In this work we focus on the simulation of the process of biomass syngas combustion in the industrial combustion chamber directly linked with gasification chamber, where this gas is continuously producing from the bio...
In this work we focus on the simulation of the process of biomass syngas combustion in the industrial combustion chamber directly linked with gasification chamber, where this gas is continuously producing from the biomass. Conflicting demands from the engineers to have rapid results and hints how to ensure the best conditions for combustion of this particular fuel and to lower the emission of pollutants, with simultaneously deep view inside the process and its stability motivates us to use both the RANS and LES techniques of turbulence modelling, compare it and take their advantages. We designed and performed series of 3D numerical simulations of both cold flow and combustion in complex geometry of industrial burner. It seems to us that the proper approach for modelling of biomass syngas combustion is steady flamelets model. Simulations performed with RANS closure are used as the initialisation of LES models, but their main goal is to predict the long-time oscillation of pressure and temperature observed in the working combustion chamber. On the other hand the main goal of the simulations with LES closure is to predict the proper level of short-time behaviour of the flame and local phenomena.
In this paper, a new formulation for the solution of the discontinuous isothermal solidification problem is presented. The formulation has similarities with the now classical capacitance and source methods traditional...
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ISBN:
(纸本)9781905088416
In this paper, a new formulation for the solution of the discontinuous isothermal solidification problem is presented. The formulation has similarities with the now classical capacitance and source methods traditionally used in commercial software. However, the new approach focuses on the solution of the governing enthalpy-transport equation rather than the governing parabolic partial differential heat equation. The advantage is that discontinuous physics can be accounted for without approximation and the arbitrariness common to classic approaches is avoided. Also introduced, is the concept of non-physical enthalpy, which unlike physical enthalpy has numerical values that are not moving-frame invariant. Understanding the behaviour of the non-physical enthalpy is central to the successful treatment of discontinuities. A particular drawback is that non-physical enthalpy is non-intuitive and new mathematical constructs are required to describe its behaviour. This involves the introduction of transport equations, which provide the new concept of relative moving-frame invariance for the non-physical enthalpy. The principal advantage however is that a unified methodology is established for the treatment of discontinuities. This is shown to establish real rigour and in many respects the formulation highlights the erroneous choices made with established classical approaches and casts in a totally new light a somewhat traditional problem. The new methodology is applied to a simple problem to provide an in-depth treatment and for ease of understanding but also to best describe the behaviour of the nonintuitive non-physical enthalpy. Demonstrated in the paper is the methods remarkable accuracy and stability.
Recent research in video surveillance system has shown an increasing focus on creating reliable systems utilizing non-computationally expensive technique for observing humans' appearance, movements and activities,...
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This paper proposes a way in which cognitive models can be exploited in practical applications in the context of Ambient Intelligence A computational model is introduced in which a cognitive model that addresses some ...
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ISBN:
(纸本)9783642130243
This paper proposes a way in which cognitive models can be exploited in practical applications in the context of Ambient Intelligence A computational model is introduced in which a cognitive model that addresses some aspects of human functioning is taken as a point of departure From this congnitive model relationships between cognitive states and behavioural aspects affected by these states are determined Moreover. representation relations or cognitive states are derived, relating them to external events such as stimuli that can be monitored Furthermore, by automatic verification of the representation relations on monitoring information the occurrence of cognitive states all the humanbehaviour is determined In this way the computational model is able to analyse causes of behaviour
A complete design methodology for timber floors must address the problem of annoying vibration caused by the occupants themselves. Proper controlling relies on good understanding nature of floor vibrations induced by ...
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ISBN:
(纸本)9781622761753
A complete design methodology for timber floors must address the problem of annoying vibration caused by the occupants themselves. Proper controlling relies on good understanding nature of floor vibrations induced by human movements. This paper reviews the major findings on characteristics of the footstep forces and discusses mechanism of footstep-induced vibrations in timber floors. A numerical modelling procedure, which is based on the finite-element method, for obtaining the natural frequencies, mode shapes and vibration response of timber floor systems is presented. Using this numerical model, the effect of change in various floor parameters on vibrational performance of timber floors is investigated.
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