ORCID Profile
0000-0003-2535-406X
Current Organisations
University of South Australia
,
Victoria University of Manchester
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Publisher: ACM Press
Date: 2015
Publisher: Elsevier BV
Date: 04-2002
Publisher: Informa UK Limited
Date: 06-2010
Publisher: Trans Tech Publications, Ltd.
Date: 02-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.211-212.195
Abstract: The primary purpose of this study is to develop a genetic algorithm based computer-aided roll pass optimal design (CAROD) system to support the generalized roll pass design for rod rolling, where the final products are round bars with different sizes. The system was developed to minimize the number of roll passes, decrease the trails and errors in industry, as well as extend the work range of multi-pass rolling systems for rod rolling. Parametric equations were established for geometrical modeling and graphic plotting, which can realize to the parametric transformation for roll pass design and optimization. A methodology based on a hybrid model was proposed to choose passes with different profiles for the multi-pass rod rolling system. In addition, an improved genetic algorithm (IGA) was employed for the optimization of roll passes. A MATLAB program was designed to achieve all these objectives. To reduce the complexity and computational burden of the software, some reliable empirical formulas were applied in this system. Finally, the proposed approach has been applied in a rod rolling system through simulation and comparison of results against analytical solutions, numerical analysis and experimental data presented by other researchers, it was found that this system is reliable, effective and easier to use.
Publisher: Springer Science and Business Media LLC
Date: 25-02-2015
Publisher: Elsevier BV
Date: 06-2016
Publisher: Elsevier BV
Date: 03-2015
DOI: 10.1016/J.ULTRAS.2014.11.001
Abstract: The optimum topology of bimaterial phononic crystal (PhCr) plates with one-dimensional (1D) periodicity to attain maximum relative bandgap width of low order Lamb waves is computationally investigated. The evolution of optimized topology with respect to filling fraction of constituents, alternatively stiff scattering inclusion, is explored. The underlying idea is to develop PhCr plate structures with high specific bandgap efficiency at particular filling fraction, or further with multiscale functionality through gradient of optimized PhCr unitcell all over the lattice array. Multiobjective genetic algorithm (GA) is employed in this research in conjunction with finite element method (FEM) for topology optimization of silicon-tungsten PhCr plate unitcells. A specialized FEM model is developed and verified for dispersion analysis of plate waves and calculation of modal response. Modal band structure of regular PhCr plate unitcells with centric scattering layer is studied as a function of aspect ratio and filling fraction. Topology optimization is then carried out for a few aspect ratios, with and without prescribed symmetry, over various filling fractions. The efficiency of obtained solutions is verified as compared to corresponding regular centric PhCr plate unitcells. Moreover, being inspired by the obtained optimum topologies, definite and easy to produce topologies are proposed with enhanced bandgap efficiency as compared to centric unitcells. Finally a few cases are introduced to evaluate the frequency response of finite PhCr plate structures produced by achieved topologies and also to confirm the reliability of calculated modal band structures. Cases made by consecutive unitcells of different filling fraction are examined in order to attest the bandgap efficiency and multiscale functionality of such graded PhCr plate structures.
Publisher: Informa UK Limited
Date: 09-12-2013
Publisher: Informa UK Limited
Date: 15-02-2013
Publisher: Elsevier BV
Date: 09-2013
DOI: 10.1016/J.PBIOMOLBIO.2013.03.015
Abstract: Structural modeling of complex biological systems relies on formalisms inherited from physics. These formalisms scale poorly when dealing with interactions with many variables and agents working in systems that cohere at multiple layers. We propose a two sorted logic that supplements existing formalisms to mitigate these problems. The purpose of this second logic is to track how multiple contexts relate to each other, as well as to the dependent structures they inform: a situating of situations. In this way, we aim to capture the multi-layered and multi-system dynamics that have been elusive in modeling emergent systems. An apoptosis ex le is explored in the context of mental concepts.
Publisher: IEEE
Date: 02-2009
Publisher: Elsevier BV
Date: 1988
Publisher: Elsevier BV
Date: 2003
Publisher: Elsevier BV
Date: 1995
Publisher: Informa UK Limited
Date: 29-06-2009
Publisher: Elsevier BV
Date: 1989
Publisher: Elsevier BV
Date: 08-2012
Publisher: Science Publications
Date: 12-2013
Publisher: Springer Berlin Heidelberg
Date: 2009
Publisher: Elsevier BV
Date: 08-2006
Publisher: SAGE Publications
Date: 03-11-2022
DOI: 10.1177/03064190211035186
Abstract: A purely analytical method for parametric force analysis of planar mechanisms with sliding friction, as well as frictionless planar mechanisms, has been developed herein. The method uses the well-known vectorial illustration of mechanisms, which is also widely used for the kinematic analysis of mechanisms. In this method, a joint force is either decomposed into components along the direction of its adjacent links and determined via the moment equilibrium equation of links or can be vectorially determined from the force equilibrium equations of one of the adjacent links. Unlike the common analytical method which leads to a system of simultaneous equations, this method leads to a set of algebraic and vectorial equations of only one unknown each. Force analysis of planar mechanisms has always been cumbersome and time consuming, but this method has proved to be simple, straightforward and quick. As per the author's experience who has been teaching the subject for many years, this is the most suitable tool for teaching and learning the topic as it makes the user needless of graphical solution or lengthy matrix calculations both of which solve a mechanism for just one position, and must be fully repeated for any other position. This method generates a parametric solution applicable to the whole cycle of the mechanism and easily lends itself to automation. The advantage of the method over the common one has been demonstrated in an ex le.
Publisher: Springer US
Date: 2001
Publisher: IEEE
Date: 12-2014
Publisher: IEEE
Date: 12-2014
Publisher: Elsevier BV
Date: 07-1996
Publisher: Springer Science and Business Media LLC
Date: 06-10-2006
Publisher: Springer Berlin Heidelberg
Date: 1997
Publisher: Trans Tech Publications, Ltd.
Date: 06-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.330.719
Abstract: Due to the increasing demand for environmentally friendly products and growing concern for green industry, environmental evaluation and environmental performance have become important measures of business and manufacturing industry. The main purpose of this evaluation is to evaluate, review, monitor and check environmental performance and compare it with its environmental performance criteria. The integration of quantitative and qualitative measurement is needed to facilitate the design of environmental performance evaluation. This research presents the design of environmental performance evaluation by using fuzzy expert system. Expert knowledge is acquired to develop the fuzzy rules. The proposed design is flexible enough to be modified and used with the different criteria.
Publisher: Trans Tech Publications, Ltd.
Date: 11-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.229-231.2100
Abstract: Tolerance parameters have different effects on robot accuracy. Therefore, it is better to tighten the tolerances of the factors that have statistically significant effect on robot accuracy and widen the tolerances of insignificant ones. By doing so, one not only achieves the given robot accuracy but also reduces manufacturing costs. Objective of this paper is to present an approach used to determine statistical significance of each tolerance parameter of robot manipulator on robot accuracy which can assist robot designers in making decisions regarding tolerance design. In this paper, a comprehensive model of industrial robot manipulator capable of carrying out various applications is developed and computer simulated. Then Taguchi’s Tolerance Design Experiment is applied to determine the statistical significances of the tolerances on robot accuracy. The approach is illustrated by a case study dealing with 6-DOF PUMA 560 robot manipulator.
Publisher: Elsevier BV
Date: 12-2015
DOI: 10.1016/J.PBIOMOLBIO.2015.07.006
Abstract: We approach a well-known problem: how to relate component physical processes in biological systems to governing imperatives in multiple system levels. The intent is to further practical tools that can be used in the clinical context. An ex le proposes a formal type system that would support this kind of reasoning, including in machines. Our ex le is based on a model of the connection between a quality of mind associated with creativity and neuropsychiatric dynamics: constructing narrative as a form of conscious introspection, which allows the manipulation of one's own driving imperatives. In this context, general creativity is indicated by an ability to manage multiple heterogeneous worldviews simultaneously in a developing narrative. 'Narrative' in this context is framed as the organizing concept behind rational linearization that can be applied to metaphysics as well as modeling perceptive dynamics. Introspection is framed as the phenomenological 'tip' that allows a perceiver to be within experience or outside it, reflecting on and modifying it. What distinguishes the approach is the rooting in well founded but disparate disciplines: phenomenology, ontic virtuality, two-sorted geometric logics, functional reactive programming, multi-level ontologies and narrative cognition. This paper advances the work by proposing a type strategy within a two-sorted reasoning system that supports cross-ontology structure. The paper describes influences on this approach, and presents an ex le that involves phenotype classes and monitored creativity enhanced by both soft methods and transcranial direct-current stimulation. The proposed solution integrates pragmatic phenomenology, situation theory, narratology and functional programming in one framework.
Publisher: Springer US
Date: 2006
Publisher: Springer International Publishing
Date: 2021
Publisher: IEEE
Date: 09-2010
Publisher: Elsevier BV
Date: 06-2003
Publisher: Elsevier BV
Date: 12-2017
DOI: 10.1016/J.PBIOMOLBIO.2017.08.014
Abstract: It is difficult to model emergence in biological systems using reductionist paradigms. A requirement for computational modeling is that in idual entities can be recorded parametrically and related logically, but their transformation into whole systems cannot be captured this way. The problem stems from an inability to formally represent the implicit influences that inform emergent organization, such as context, shifts in causal agency or scale, and self-reference. This lack h ers biological systems modeling and its computational counterpart, indicating a need for new fundamental abstraction frameworks that support system-level characteristics. We develop an approach that formally captures these characteristics, focusing on the way they come together to enable transformation at the 'peak' of the emergent process. An ex le from virology is presented, in which two seemingly antagonistic systems - the herpes cold sore virus and its host - are capable of altering their basic biological objectives to achieve a new equilibrium. The usual barriers to modeling this process are overcome by incorporating mechanisms from practices centered on its emergent peak: design and katachi. In the Japanese science of form, katachi refers to the emergence of intrinsic structure from real situations, where an optimal balance between implicit influences is achieved. Design indicates how such optimization is guided by principles of flow. These practices leverage qualities of situated abstraction, which we understand through the intuitive method of physicist Kôdi Husimi. Early results indicate that this approach can capture the functional transformations of biological emergence, whilst being reasonably computable. Due to its geometric foundations and narrative-based extension to logic, the method will also generate speculative predictions. This research forms the foundations of a new biomedical modeling platform, which is discussed.
Publisher: Elsevier BV
Date: 08-1999
Publisher: Springer US
Date: 2004
Publisher: SAGE Publications
Date: 20-04-2022
Abstract: This paper describes a method for unified parametric kinematic analysis of those planar mechanisms whose geometry can be defined with a set of independent vectorial loops, i.e. solvable independently this covers a wide range of planar mechanisms. The method is developed by employing the well-known vectorial illustration, and vectorial-loop equations solved with the aid of complex polar algebra leading to a total of only nine unified/generic one-unknown parametric equations consisting of five equations for position analysis and two equations for velocity and acceleration analysis each. Then, the kinematics of joints and mass centers are manifested as resultants of a few known vectors. This method is needless of relative-velocities, relative-accelerations, instantaneous centers of rotation and Kennedy’s Theorem dominantly used in the literature, especially textbooks. The efficiency of the method is demonstrated by its application to a complex mechanism through only eight unified equations, and simultaneously compared to the solution using the textbook common (Raven’s) method which required the derivation of 67 extra equations to get the same results. This reveals the fact that the method is not only a powerful tool for mechanical designers but a most powerful and efficient method for teaching and learning the kinematics of planar mechanisms.
Publisher: Springer-Verlag
Date: 2005
Publisher: Springer Science and Business Media LLC
Date: 19-11-2011
Publisher: IGI Global
Date: 2014
DOI: 10.4018/978-1-4666-5142-5.CH013
Abstract: Studies show that enterprises are severely constrained by their management structures, and that those constraints become more vexing as information technologies are adopted. This is more true as “interoperability engineering” advances the enterprise is capable of doing simple, ordinary things better, but the form of the enterprise becomes less adaptive, less agile as external firms are integrated in using lowest common denominator standards. The net result is that we are worse off now because of the constraints of integration decisions. A radical advance is required, one based on breakthroughs in the underlying science used by enterprise engineers. This chapter indicates one advanced form of enterprise that current research could make possible and uses it to illustrate desired enterprise engineering tools. It then suggests an agenda for fundamental research to support those goals.
Publisher: Elsevier BV
Date: 1987
Publisher: IEEE
Date: 2005
Publisher: WIT Press
Date: 22-04-2008
DOI: 10.2495/RISK080131
Publisher: Elsevier BV
Date: 10-2003
Publisher: Elsevier
Date: 2020
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier
Date: 2020
Publisher: Elsevier BV
Date: 2009
Publisher: Springer-Verlag
Date: 2005
Publisher: Elsevier BV
Date: 2012
Publisher: Science Publications
Date: 12-2013
Publisher: Elsevier BV
Date: 11-2014
Publisher: Elsevier BV
Date: 2020
Publisher: Emerald
Date: 11-2002
DOI: 10.1108/09600030210452440
Abstract: In the manufacturing industry, there are a large number of small and medium‐sized manufacturers (M‐SMEs) which provide specialty manufacturing and support services to large corporations. M‐SMEs form the biggest group of manufacturing entities in many newly industrialized economies. The needs and operating requirements of these M‐SMEs are very different from those of large companies. Much research has been carried out in the area of mechanisms, techniques, heuristic designs, modeling, and usage of fuzzy logic in production planning, scheduling and production control. However, most research only addresses a particular area of the enterprise planning process. In addition, the majority of the large‐scale enterprise resources planning (ERP) systems created for large corporations’ manufacturers are sometimes ineffective in M‐SMEs. This research highlights the organizational, structural, operational and supply chain related interdependencies impacting the planning and management of the internal supply chain in M‐SMEs in the Southeast Asia region. Similar to the deployment of management and manufacturing information systems, the need to fully comprehend the operational dynamics of M‐SMEs is crucial for the successful implementation of ERP systems to manage the internal supply chain. The deployment of ERP systems in M‐SMEs is simpler in some aspects compared to large corporations, but can be more complicated in others.
Publisher: Trans Tech Publications, Ltd.
Date: 03-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.488-489.1082
Abstract: Lean six-sigma methodology focuses on continuous improvement approach with an emphasis on improving the product quality and reducing waste. Recent studies of lean six-sigma methodology indicated that this methodology commonly focus on four areas of performance namely quality, cost time and service. In this paper, an environmental performance is proposed into lean six-sigma methodology. An environmental performance needs to be integrated into lean six-sigma as a new paradigm of lean six-sigma methodology to achieve overall competitiveness of product.
Publisher: Springer US
Date: 2003
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Kazem Abhary.