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Creative Construction conference (CC)

作者： Buzalo, Natalia Ermachenko, Pavel Bock, Thomas Bulgakov, Alexej Chistyakov, Alexander Sukhinov, Alexander Zhmenya, Evgeniya Zakharchenko, Natalia Platov South Russian State Polytech Univ NPI Prosveshenia Str 132 Novocherkassk 346428 Russia Tech Univ Munich D-80333 Munich Germany South West State Univ Kursk 305040 Russia Southern Fed Univ Engn Technol Acad Taganrog 347928 Russia Novocherkassk State Land Reclamat Acad Novocherkassk 346428 Russia

Modem fast growing megacities and urban agglomerations exert extremely high environmental load. One of the biggest problems of megalopolises is the human organic waste disposal. Under current technology, waste utilization requires enormous extent of sewer networks and large areas of treatment plants, which deform the natural landscapes and is expensive to operate. Organization of local recycling of organic waste is crucially important at creation of new urban objects satisfying the principle of biosphere compatibility. In addition, it should be noted, that with the rising of building tallness in modern cities the use of centralized water systems leads to excessive overruns of electricity by pumping equipment, therefore the local effluent regeneration systems is the optimal solution for skyscrapers. Making a start from successful design experience of closed ecological life support systems, which were initially created for long-duration space flights, our research implements the idea to realize closed circle for flows of substances and energy for utilization of human waste and improving air quality within residential building. We focus on small volume treatment facilities designed for 20-30 people. The main difference of our system is the high degree of closure of flows. Thus, the hardest part is to balance all technological processes. To solve this problem we suggest using rather complicated and accurate modelling founded on non-stationary partial differential equations describing the laws of matter conservation as a basis of an automatic control system. In this article, we present a mathematical model to simulate and control processes of transport phenomena in the system microalgae-mineralization-human. The model includes flow equations, the equations of reaction-advection-diffusion on a stratified set (linked 1D and 2D domains). (C) 2014 The Authors. Published by Elsevier Ltd.

关键词： Biosphere compatibility of cities closed ecological life support systems mathematical modelling photobioreactor treatment plants

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Coverage Criteria for behavioural Testing of Software Product Lines 6

Coverage Criteria for Behavioural Testing of Software Produc...

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6th International Symposium on Leveraging Applications of Formal Methods, Verification and Validation (ISoLA)

作者： Devroey, Xavier Perrouin, Gilles Legay, Axel Cordy, Maxime Schobbens, Pierre-Yves Heymans, Patrick Univ Namur PReCISE Res Ctr Fac Comp Sci Namur Belgium INRIA Rennes France

ISBN: (纸本)9783662452349;9783662452332

Featured Transition Systems (FTS) is a mathematical structure to represent the behaviour of software product line in a concise way. The combination of the well-known transition systems approach to formal behavioural modelling with feature expressions was pivotal to the design of efficient verification approaches. Such approaches indeed avoid to consider products' behaviour independently, leading to often exponential savings. Building on this successful structure, we lay the foundations of model-based testing approach to SPLs. We define several FTS-aware coverage criteria and report on our experience combining FTS with usage-based testing for configurable websites.

关键词： Coverage Criteria Model Based Testing Software Product Line engineering

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Modeling and simulation of physical parameters of human respiratory system 6

Modeling and simulation of physical parameters of human resp...

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6th International conference on Advanced Concepts in Mechanical engineering, ACME 2014

作者： Meireles, Catarina Machado, José Leão, Celina P R and D CT2M Engineering School University of Minho Guimarães Portugal R and D Centro Algoritmi Engineering School University of Minho Guimarães Portugal

ISBN: (纸本)9783038352716

The respiratory system, due to its non-linear behaviour, is of difficult representation through fixed physical components and common control systems. Therefore, mathematical equations, that represents the respiratory cycle;mechanical components, giving dimension and movement to the simulator;and the electronic components, allowing data acquisition and system control are some factors that must be known and synchronized. The presented work describes the implementation of a mathematical model (in MatLab) that reproduces the non-linear behaviour of the respiratory system, allowing the characterization of different pathophysiological situations. In parallel a graphical interface was developed enabling the user track the change in air flow and volume handled during the respiratory cycle and build physiological profiles of different patients. © (2014) Trans Tech Publications, Switzerland.

关键词： Respiratory system

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RP VS WORKSHOP: HOW modelling METHODS AFFECT EARLY DESIGN DEVELOPMENT 16

RP VS WORKSHOP: HOW MODELLING METHODS AFFECT EARLY DESIGN DE...

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16th International conference on engineering and Product Design Education (E&PDE)

作者： Underwood, Gary Bournemouth Univ Poole Dorset England

ISBN: (纸本)9781904670568

The use of physical modelling has long been established as a crucial part of the Product Design process. In recent years Rapid Prototyping (RP) has played an increasingly important role in this area, within industry and education. But exactly how RP fits within a modern Product Design curriculum, and the extent to which it is utilised, are contentious issues. While some Universities are happy to make use of RP throughout the design process, to date Bournemouth University (BU) has favoured traditional model making skills during the concept testing stage. However, while traditional methods may present a number of advantages over RP - such as more direct scalar and tactile feedback, and a broader understanding of materials - they may also have a detrimental effect on students' designs. The limitations of producing an accurate model by hand may well be responsible for restricting design development, while the use of new technology may instead encourage a wider range of possibilities. This paper seeks to explore the influence of RP and traditional workshop skills during the concept modelling phase of Product Design. Through the use of a comparative study involving design iterations with different modelling methods, the early design process is examined with particular focus on the experiences of the students themselves. The results highlight the benefits and drawbacks of using RP during concept testing and how new technology can influence student behaviour at this crucial stage of design development.

关键词： Rapid prototyping product design foam modelling

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Application of reverse osmosis in nuclear plants for recycling of boric acid (pilot-scale measurements) 21

Application of reverse osmosis in nuclear plants for recycli...

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21st International Congress of Chemical and Process engineering, CHISA 2014 and 17th conference on Process Integration, modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014

作者： Skala, M. Moucha, T. Labik, L. Kůs, P. Bártová, Š. ICT Prague Dep. of Chemical Engineering Technická 5 Praha 6166 28 Czech Republic Centrum Vyzkumu Rez s.r.o. Husinec - Rez 130 250 68 Czech Republic

ISBN: (纸本)9781510828131

Purpose of this project is to offer suitable solution for using of reverse osmosis as separation technology in nuclear power plants. The measurements were performed on laboratory size apparatus using standard spiral wound module (25×40 inch). The setup of experiments was drawn for a primary selection of membranes and brief check of system behaviour. Obtained data for various experimental conditions was used for proposal of first approach chemical engineering description of process taking place in RO module. This mathematical description provides clue for future planning of experimental work as well as for process design for industrial scale device.

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A modified Holzapfel-Ogden law for a residually stressed finite strain model of the human left ventricle in diastole

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BIOMECHANICS AND MODELING IN MECHANOBIOLOGY 2014年第1期13卷 99-113页

作者： Wang, H. M. Luo, X. Y. Gao, H. Ogden, R. W. Griffith, B. E. Berry, C. Wang, T. J. Xinjiang Univ Sch Civil Engn Xinjiang Peoples R China Univ Glasgow Sch Math & Stat Glasgow Lanark Scotland NYU Sch Med Dept Med Leon H Charney Div Cardiol New York NY USA Univ Glasgow Inst Cardiovasc & Med Sci Glasgow Lanark Scotland Xi An Jiao Tong Univ Sch Aerosp Engn SV Lab Xian 710049 Peoples R China

In this work, we introduce a modified Holzapfel-Ogden hyperelastic constitutive model for ventricular myocardium that accounts for residual stresses, and we investigate the effects of residual stresses in diastole using a magnetic resonance imaging-derived model of the human left ventricle (LV). We adopt an invariant-based constitutive modelling approach and treat the left ventricular myocardium as a non-homogeneous, fibre-reinforced, incompressible material. Because in vivo images provide the configuration of the LV in a loaded state even in diastole, an inverse analysis is used to determine the corresponding unloaded reference configuration. The residual stress in this unloaded state is estimated by two different methods. One is based on three-dimensional strain measurements in a local region of the canine LV, and the other uses the opening angle method for a cylindrical tube. We find that including residual stress in the model changes the stress distributions across the myocardium and that whereas both methods yield qualitatively similar changes, there are quantitative differences between the two approaches. Although the effects of residual stresses are relatively small in diastole, the model can be extended to explore the full impact of residual stress on LV mechanical behaviour for the whole cardiac cycle as more experimental data become available. In addition, although not considered here, residual stresses may also play a larger role in models that account for tissue growth and remodelling.

关键词： Residual stress Left ventricle Finite strain Finite stress

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Barriers to engagement with a personal informatics productivity tool 14

Barriers to engagement with a personal informatics productiv...

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26th Australian Computer-human Interaction conference, OzCHI 2014

作者： Collins, Emily I.M. Cox, Anna L. Bird, Jon Cornish-Tresstail, Cassie UCL Interaction Centre Gower Street LondonW1CE 6BT United Kingdom City University London School of Engineering and Mathematical Sciences LondonEC1V 0HB United Kingdom

ISBN: (纸本)9781450306539

Technology helps us get work done but also provides many distractions. As a result, seemingly unproductive activities such as social networking sites (SNS) cause considerable stress. This paper reports a series of studies into whether personal informatics (PI) tools for productivity can make people more aware of their SNS usage and encourage behaviour change. The first two studies took an in-the-wild approach, encouraging students to use a PI tool, RescueTime, to improve their estimations of how much time they spent using SNS, in line with research that had used this technique to reduce participants' stress. However, participants simply did not engage with RescueTime in the studies. A further interview study found that there are four barriers that inhibit engagement with this PI tool and reduce its potential to facilitate behaviour change. In particular, the way it presents data lacks: salience;contextual information;credibility;and action advice. Copyright 2014 ACM.

关键词： Productivity

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Proceedings of the 10th Asia-Pacific conference on Conceptual modelling, APCCM 2014

Proceedings of the 10th Asia-Pacific Conference on Conceptua...

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10th Asia-Pacific conference on Conceptual modelling APCCM 2014

ISBN: (纸本)9781921770364

This proceedings contains 11 papers. The scope of APCCM 2014 includes areas such as: Business, enterprise, process and services modelling;Concepts, concept theories and ontologies;Conceptual modelling and user participation;Conceptual modelling for decision support and expert systems;digital libraries;e-business, ecommerce and e-banking systems;health care systems;knowledge management systems;mobile information systems;user interfaces;and Web-based systems;Conceptual modelling of semi-structured data and XML;Conceptual modelling of spatial, temporal and biological data;Conceptual modelling quality;Conceptual models for cloud computing applications;Conceptual models for supporting requirement engineering;Conceptual models in management science;Design patterns and object-oriented design;Evolution and change in conceptual models;Implementations of information systems;Information and schema integration;Information customisation and user profiles;Information recognition and information modelling;Information retrieval, analysis, visualisation and prediction;Information systems design methodologies;Knowledge discovery, knowledge representation and knowledge management;Methods for developing, validating and communicating conceptual models;Models for the Semantic Web;Philosophical, mathematical and linguistic foundations of conceptual models;Reuse, reverse engineering and reengineering;and Software engineering and tools for information systems development, etc. The key terms of this proceedings include operationalization, CARE, load-capacity model, business artifact, atomicity, human-robot interaction, domain semantics, conceptual modelling, requirements acquisition, situational method engineering.

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Hygro-thermal modelling of concrete exposed to high temperatures

Hygro-thermal modelling of concrete exposed to high temperat...

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1st Australasian conference on Computational Mechanics, ACCM 2013

作者： de Burgh, James M. Valipour, Hamid R. Foster, Stephen J. School of Civil and Environmental Engineering University of New South Wales Sydney NSW Australia

ISBN: (纸本)9783038350682

As part of an ongoing research project into the numerical prediction of high temperature hygral processes in concrete and fire induced spalling, a fully coupled hygro-thermal model has been formulated for predicting the behaviour of concrete at high temperatures. The hygro-thermal model is a mathematical model for predicting the behaviour of concrete at high temperatures, treating the concrete as a multi-phase semi-saturated porous material. A numerical simulation of a one-dimensional heating experiment performed on an unreinforced concrete slab is presented, demonstrating the effectiveness of the model. A brief discussion of the main hygral processes is presented, in addition to a discussion of numerical challenges arising from the numerical implementation. © (2014) Trans Tech Publications, Switzerland.

关键词： Forecasting

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modelling and Simulation of Piezoelectric Actuator for Vibration Control

Modelling and Simulation of Piezoelectric Actuator for Vibra...

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Asian Control conference

作者： Bashir Bala Muhammad Habibur Rahman Mohd Ridzuan bin Ahmad Department of Control and Mechatronics Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia

ISBN: (纸本)9781479978632

The piezoelectric actuator is a voltage spring system that behaves in similar characteristic to mechanical mass spring system. It converts electrical signal to physical displacement. The displacements profile of the piezoelectric actuator shifts due to hysteresis and creep during actuation. Numerous equations were used to describe model of actuator in the past. In this work, we presented the behaviour of the piezoelectric actuator in terms of mechanical displacement from applied electric potential. The transfer function mathematical model was generated representing the actuator characteristics. The model was developed by system identification from experimental results. A high resolution microscope together with the image processing technique was used to obtain the system characteristics. Simulation using Matlab simulink was use to validate the experiment. Experimental results specify that displacement of 0.5 μm in length was generated from 25 V and 1.0 μm displacement was obtained from 50 V of input voltage. The model has damping ratio of 0.412. This model can be used to develop the controller for controlling vibration profile. It can also be used for desired micro actuation.

关键词： Frequency Hysteresis Mass spring system modelling Piezoelectric actuator Sensor Simulation System identification Voltage spring system

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