Papers by Keyword: Model

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Authors: Dong Ming Yu, Hai Lin Yao, Feng Guang Chen
Abstract: This paper provides a simple and effective modeling method for complicated geological bodies in numerical software. By means of the most common tool software, the high quality 3d numerical model of the complicated geological body in the geotechnical engineering was built quickly and easily in the numerical software, ANSYS. Furthermore, this numerical model was reproduced in other numerical software, FLAC3D and ABAQUS. It is achieved that the 3d numerical model is shared among the numerical software, ANSYS, FLAC3D and ABAQUS and a basis is supplied for numerical calculation. The modeling method in this paper is of practical significance.
Authors: Yue Qin Tang, M.L. Zhang
Abstract: People in the world are more concerned about environment protection than ever before, which calls for green manufacturing (GM) and industrial ecology. With more eco-industrial parks (EIPs) built up recently in China, this GM, however, is progressively integrated into a ideal framework featuring in economies of scale as well as circular economy, aiming at saving energy, protecting the environment and sustaining economic growth. Jiangxi provincial government commits itself to constructing ten EIPs, one of which is Hengfeng EIP that succeeds both in business & investment invitation and circular economy. Likewise, some of the issues surrounding the environmental performance and resource management require a lot of exploration.
Authors: Xing Min Shi
Abstract: The observation on motion and behaviors of the animal is still important in scientific research fields, and various behaviors of animals are tracked and analyzed for many different purposes. The paper concentrates on the technologies employed for animal tracking in video, and reviews the tracking models related to animal motions and behaviors including shape-based model, contour-based model, articulated model, Bag-Of-Feature based model, Markov Model, etc. and gives a brief summary of these models respectively.
Authors: Gang Li, Lin Wei Xu, Hao He, Xing An
Abstract: Firstly, the conception of hypersonic flight and its flight characteristics are introduced in the article. Secondly, a control method based on the structured singular value theory is proposed, and the necessity of this method whether can be applied to design the hypersonic vehicle controller is discussed. And then taking a model for example, the robust controller of hypersonic vehicle is designed. At last, the control effect of this controller is proved better through the simulation result. It also turned out that the controller has excellent command track performance.
Authors: Susana Soto-Rojo, Gary Glonek, Pamela Soto, Cecilia Demergasso, Patty Solomon
Abstract: A descriptive mathematical model is a valuable tool that can help understand the relationship between the heap leaching process at the Escondida mine in Chile, the microbial community that participates in the process, and the physical characteristics of the heap, such as the arrangement and the mineral composition of the individual leaching strips. However, the bioleaching process at Escondida is a system, which presents many challenges to modelling. The main challenges relate to heap's design and mineral characteristics, the complex interactions between biological and physicochemical parameters, and the unexpected changes in the heap's operational conditions. The heap is sampled periodically and more than 20 variables, including 16S rRNA gene copy number for 16 different microorganisms, are recorded. The data exhibit complex behaviour, including variable dynamics between strips, systematic differences between lifts of the heap, and spatial and temporal correlations. In this work, we develop a non-linear descriptive model for the microbial population trajectory along the leaching cycle and across the different strips. The parameterisation of the model considers the different dynamics between lifts, and strip specific parameters characterise the behaviour of data from individual strips. The parameterisation also allows for spatial correlation by incorporating the effect of adjacent strips on the microbial population trajectory. The model is found to provide a good fit to the data and captures its behaviour across strips. Residuals showed no systematic patterns of departure between the observed and modelled response. The R2 values ranged from 0.53 to 0.71, indicating a reasonable level of predictive power.
Authors: Qi Xuan Rui, Guo Guang Cheng
Abstract: With an increasing demand for high grade electric magnetic steels, SSRF(Single Snorkel Refining Furance) has got much attention due to its high efficiency of both decarburization and desulphurization. However the desulphurization mechanism of this kind SSRF is remarkably different from that of other steel refining processes such as LF,RH etc. , so it is necessary to understand the behaviour of desulphurization clearly. A mathmatical model has been established in this paper to investigate the degree of desulpurization with time on the basis of the influencing factors such as sulphur capacity of flux ,stirring energy of molten steel. It is shown that the desulpurization rate constant is about 1.0E-8 in accordance with the data from the practical test of a steel plant with SSRF.
Authors: Srdjan Nešić, Magnus Nordsveen, Rolf Nyborg, Aage Stangeland
Authors: Chun You Zhang, Wei Yan
Abstract: Research thermal overload protection not only to protect the motor winding insulation damage due to temperature is too high, also can give full play to the overload capacity of the motor. This paper proposed overload protection model based on heat effects, and deduces the motor internal discrete recursive algorithm of temperature-rise calculation. Based on this algorithm, we constructed the motor internal temperature-rise model, which can calculate temperature-rise of the motor in real-time, and realized the intelligent control of the motor.
Authors: Hong Zhen Xu, Bin Tang, Ying Gui, Huai Ping Wang
Abstract: Workflow technology has emerged as one of those technologies designed to support modeling, designing and executing business processes. One of the major limitations of current workflow management systems is the lack of flexibility to support dynamic management of workflows. In this paper, we propose a dynamic workflow management model based on web services. We integrate web services and ontology technologies to support dynamic specifying, monitoring, analyzing, designing, configuring and executing workflows. We explain the need and functionality of the main modules and interfaces of the model, and introduce its application in a case study. An important feature of this model is to support for planning and adaptive workflow management.
Authors: Chen Song Dong, Tuong Yung Tang
Abstract: A new empirical model for predicting the permeability of fiber mats is presented in this paper. Permeability data were collected from the NIST reinforcement permeability database and categorized according to the material architecture. It is seen from the data that for each category, permeability is proportional to fiber volume fraction. In order to describe the behavior of permeability vs. fiber volume fraction, the location, scale and shape parameters were introduced for each material category. The model was validated against the experimental data and good agreement was found.
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