检索结果-内蒙古大学图书馆

作者： Azlan, Norsinnira Zainul Yamaura, Hiroshi Department of Mechanical and Control Engineering Graduate School of Science and Engineering Tokyo Institute of Technology Ookayama 2-12-1-I3-10 Meguro-ku Tokyo 158-8552 Japan

ISBN: (纸本)9780956715708

This paper presents the development of the mathematical model and controller of a light weight and small size robot finger. The finger possesses self adaptive grasping capability and is made of seven bar linkages with a slider or lead screw mechanism in the middle phalanx to adjust its effective length in realizing both pinching and grasping tasks. The dynamic model of the linkages is integrated with the electrical motors mathematical description to represent the whole robotic system. Numerical simulations have been carried out to study the finger's dynamic behaviour under the Proportional Integral Derivative (PID) control. © 2011 Shanghai Jiaotong Univ.

关键词： Anthropomorphic robots

来源：评论

学校读者我要写书评

暂无评论

Design and shape optimization of a new type of hollow concrete masonry block using the finite element method

引用

engineering STRUCTURES 2011年第1期33卷 1-9页

作者： del Coz Diaz, J. J. Garcia Nieto, P. J. Alvarez Rabanal, F. P. Lozano Martinez-Luengas, A. Univ Oviedo Construct Dept Gijon 33204 Spain Univ Oviedo Dept Math Oviedo 33007 Spain

This study describes the development of a new type of hollow concrete masonry block unit in order to minimize its weight based on topological optimization and design of experiments (DOE). This key factor is the most important parameter in human and robotic block handling in masonry construction, due to the traditionally heavy weight of the blocks. With this aim, it was necessary to use the finite element method (FEM) to calculate the compressive resistance of the different concrete block designs and then to choose the optimum hollow block from the handling and structural points of view. The nonlinearity in this problem is due to the material behaviour of the concrete. In this way a combined mathematical model (Drucker-Praguer and Willam-Warnke material models) for concrete was implemented and solved using the FEM. The numerical results of the candidate blocks give rise to new solutions in masonry construction through the adequate redesign of the blocks. These new block designs are lighter, keeping the structural resistance and improving the block handling. Finally, conclusions of the study are given. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Concrete hollow block Design and shape optimization Finite element modelling Nonlinear analysis Numerical methods

来源：评论

学校读者我要写书评

暂无评论

mathematical modelling of Bacterial Populations in Bio‐remediation Processes

引用

AIP conference Proceedings 2011年第1期1389卷 1458-1461页

作者： Ioanna A. Vasiliadou Dimitris V. Vayenas Constantinos V. Chrysikopoulos aModelling and Numerical Simulation Materials Science and Engineering and Chemical Engineering Department Universidad Carlos III de Madrid Av. Universidad 30 Leganes 28911 Spain bDepartment of Environmental and Natural Resources Management University of Ioannina Seferi 2 30100 Agrinio Greece cEnvironmental Engineering Laboratory Civil Engineering Department University of Patras Patras 26500 Greece

An understanding of bacterial behaviour concerns many field applications, such as the enhancement of water, wastewater and subsurface bio‐remediation, the prevention of environmental pollution and the protection of human health. Numerous microorganisms have been identified to be able to degrade chemical pollutants, thus, a variety of bacteria are known that can be used in bio‐remediation processes. In this study the development of mathematical models capable of describing bacterial behaviour considered in bio‐augmentation plans, such as bacterial growth, consumption of nutrients, removal of pollutants, bacterial transport and attachment in porous media, is presented. The mathematical models may be used as a guide in designing and assessing the conditions under which areas contaminated with pollutants can be better remediated.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The human body behavior under vehicle vibrations

The human body behavior under vehicle vibrations

引用

13th WSEAS International conference on Automatic Control, modelling and Simulation, ACMOS'11

作者： Kulcsar, Raul Miklos Argesanu, Veronica Borozan, Ion Silviu Maniu, Inocentiu Mechanical Engineering Faculty Mechatronics Department Politehnica University from Timisoara 1 Mihai Viteazu Blvd. RO-300222 Timisoara Romania

ISBN: (纸本)9781618040046

The influence of vertical vibrations on the human body is analyzed on the basis of models, where the main components and their characteristic properties are made evident. As a function of position of the body, there are considered models, having concentrated masses, elastic constraints and dampers. For a few models that are presented, the matrix differential equations of motion are written and the mathematical input-state-output model (M-ISO-M) is specified. On the basis of the adopted mathematical models, computer block diagrams are defined. Thus, for the study of behavior of the mechanical systems, calculus diagrams are elaborated, in order to make evident the connections between the blocks and the developments with the help of Math Lab simulation of the system response to a harmonic input signal. Also with the help of the AnyBody Modeling System software, a driving simulation had been made, resulting intense muscle activities by subjecting the human body to the vehicle vibrations and external forces. The concrete cases that are studied refer to real situations for which the system parameters are deduced by a methodology, previously specified. In each case, fixed by the program running, for each mass, the amplitude-pulsation characteristics are determined, making evident the resonance possibilities.

关键词： Automobile bodies

来源：评论

学校读者我要写书评

暂无评论

Using an ADM-Based Model to Explore human Intestinal Flora behaviour

Using an ADM-Based Model to Explore Human Intestinal Flora B...

引用

作者： Arun S. Moorthy University of Guelph

学位级别：硕士

The human colon is an anaerobic environment densely populated with bacterial species, creating what is known as the human intestinal microbiome; an ecosystem imperative to physiological func- tion with regards to metabolism of non-digestible residues, growth of cells and immune protection from invading organisms. As such, quantifying, and subsequently developing an understanding of the behaviour of this microbial population can be of great value. Unfortunately, because of the physical inaccessibility of many parts of the gastro-intestinal (GI) tract, routine experimentation with this en- vironment is not practical. However, theoretical modelling techniques including in vitro and in silico simulation/experimental platforms provide a means by which further studying of intestinal microflora can be approached. Perfecting these theoretical models is an important step in further understanding colon microbiota. An existing in silico model of carbohydrate digestion in the colon, developed by Mu˜ noz-Tamayo et al. (2010) has been used as a platform for experimentation with the intention of of discovering features which may be removed and/or added to improve the performance and reliability of the design. The model is an adaptation of the waste-water engineering based mathematical model ADM1 (Anaerobic Digestion Model 1), developed to incorporate biochemical and environmental specifications as well as physical structures particular to the human colon. The model is then a system of 102-ordinary differential equation with 66 parameters. Simulations with the default model configuration as well as variations of input variables, namely di- etary fiber consumption and system flow rate, were completed to study the effect on average biomass concentration, demonstrating significant sensitivity to input variables and an unexpected linearity based on the non-linearity of the original complex system. Simulations and further study suggest that advancements in in silico modelling of the col

关键词：

来源：评论

学校读者我要写书评

暂无评论

A distributed object linker for neptune using the eclipse modelling framework

A distributed object linker for neptune using the eclipse mo...

引用

4th International conference on Developments in eSystems engineering, DeSE 2011

作者： Lamb, David Randles, Martin Taleb-Bendiab, A. School of Computing and Mathematical Sciences Liverpool John Moores University Liverpool United Kingdom

ISBN: (纸本)9781457721861

Neptune provides a framework for developing autonomic software systems, using the web service model to provision for and assemble applications. Challenges present in all but the most trivial of service assemblies concern: determination of required service types, location of suitable service instances, and guaranteeing behaviour adheres to any specified policy. The Neptune model is concerned with specification of individual services and resources, along with their requirements and abilities. The Neptune engine, using this information is responsible for automated assembly of these services, given an abstract software specification. This paper reports on the development of a small-scale reference implementation comprising the main Neptune data model (built around the EMF data model) and a small-scale object / service linker. © 2011 IEEE.

关键词： Web services

来源：评论

学校读者我要写书评

暂无评论

Simplified finite element dynamic analysis of wood floors using OpenSees

Simplified finite element dynamic analysis of wood floors us...

引用

13th International conference on Civil, Structural and Environmental engineering Computing, CC 2011

作者： Coryell, B. Ebrahimpour, A. Department of Civil and Environmental Engineering Idaho State University United States

ISBN: (纸本)9781905088454

Engineered wood floor systems have provided engineers with a method to span greater distances with significantly less raw material than standard sawn lumber. Longer spans with lighter floors have made engineered wood floors susceptible to undesirable levels of vibrations due to human activities. This paper presents a computer analysis method that considers realistic floor behaviour without the complexity associated with finite element modelling. To achieve this, an Excel® interface was developed to communicate the desired floor system properties to the OpenSees finite element analysis software. The interface also performs floor design acceptance post-processing. The output was compared with experimental results in order to substantiate the computer analysis tool as a viable design aid. © Civil-Comp Press, 2011.

关键词： Finite element method

来源：评论

学校读者我要写书评

暂无评论

mathematical modelling OF BIOFILTER EFFECTIVENESS IN PH REGIMES 8

MATHEMATICAL MODELLING OF BIOFILTER EFFECTIVENESS IN PH REGI...

引用

8th International conference Environmental engineering

作者： Vaiskunaite, Rasa Vilnius Gediminas Tech Univ LT-10223 Vilnius Lithuania

ISBN: (纸本)9789955288275

The efficiency of a biofilter filled with pine bark charge was modelled under conditions of interchanging pH. Hydrogen ion concentration is significance for the growth of microorganisms, therefore biological metabolism is strongly dependent on pH. Many microorganisms will only grow within a particular pH range. Since pH has a strong influence on kinetic parameters and governs the process into the biofilm, proton concentration (H+) was included as a state variable in the model. Different approaches to model pH variations in biological systems can be found in literature. The biofilter model was implemented in a home-made simulation environment developed in MATLAB. Model evaluation was performed by comparison of model predictions with experimental data obtained in the pine bark charge of biofilter. The model was able to predict qualitatively and quantitatively the behaviour of the system under dynamic conditions, particularly for pH. modelling were performed with different pH regimes (4, 5, 6, 7, 8, 9 and 10) in the charge filled with pine bark. Moreover, the dependence of the filter efficiency on its charge height (0.15-0.75 m) with different initial pollutants (xylene, butanol and buyl acetate) concentrations and at different velocity of passing air (0.02-0.1 m/s) were modelled. Similar to experimental tests, the increase in the charge height from 0.15 to 0.75 m results in the increase in cleaning efficiency. For example, when the pH of 7 is maintained in the biocharge and the air is being cleaned of butyal acetate (with its initial concentration of 74 mg/m(3)) the efficiency of removal of butyl acetate starting with the height of the charge equal to 30 m is 70.1 %, starting with the height of 60 m is 77.6 %. Furthermore, modelled expression were similar to experimental data of the air flow rate results in the decreased efficiency of the biofilter. Respectively, when the pH of 7 is maintained in the charge and the air is beeing cleaned of xylene (with its initial con

关键词： biofilter biofiltration volatile organic compounds biocharge pH mathematical model

来源：评论

学校读者我要写书评

暂无评论

Pressure distribution model for pressure garments and its verification

Pressure distribution model for pressure garments and its ve...

引用

International conference on Modeling, Simulation and Applied Optimization

作者： Salleh, M.N. Acar, M. Burns, N.D. College of Business Universiti Utara Malaysia 06010 Sintok Kedah Malaysia Wolfson School of Mechanical and Manufacturing Engineering Loughborough University Leicestershire LE11 3TU United Kingdom

ISBN: (纸本)9781457700057

Pressure garments are tight fitting elastic garments which apply pressure to the wounded area of the human body for treatment. They prevent and control the formation of hypertrophic scars by applying counter pressure to the burn wounded area [1]. The garments are primarily designed to exert pressure on a particular part of the body. © 2011 IEEE.

关键词： Clothing Equations mathematical model Predictive models Pressure measurement Solid modeling Three dimensional displays clothing clothing industry elastic garments pressure pressure distribution model pressure garments pressure measurement production engineering computing solid modelling

来源：评论

学校读者我要写书评

暂无评论

THE FORMULATION OF A NON-LINEAR HERTZIAN MODEL IN ORDER TO ASSESS THE MECHANICAL STRENGTH OF human CELLS BASED ON DATA FROM AN ATOMIC FORCE MICROSCOPE

THE FORMULATION OF A NON-LINEAR HERTZIAN MODEL IN ORDER TO A...

引用

18th IEEE International conference on Image Processing (ICIP)

作者： Burton, D. R. Murphy, M. F. Lilley, F. Gdeisat, M. A. Liverpool John Moores Univ Gen Engn Res Inst Liverpool L3 5UX Merseyside England

ISBN: (纸本)9781457713033

There has recently been a significant growth in interest in determining the mechanical properties of living human cells. Much of this work has centred around the application of the Hertz Contact Stress model to force/displacement curves that are obtained from atomic force microscopy. However, it is widely recognised that the conventional Hertzian approach, that is based upon a linear elastic model for the stress strain relationship of the material, is inadequate for accurately modelling and describing the behaviour of living cells under load. This paper presents a new non-linear extension of the Hertzian model and shows results that provide excellent agreement with experimentally obtained force/displacement data from a range of different cell types. Furthermore the paper goes on to show the way in which the model can be used as a tool to distinguish between different populations of cells of different types, morphologies, or pathological status.

关键词： mechanical properties cells Hertz model

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：