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Articles 31 - 39 of 39
Full-Text Articles in Social and Behavioral Sciences
Classification Theorems For The C*-Algebras Of Graphs With Sinks, Iain Raeburn, Mark Tomforde, Dana Williams
Classification Theorems For The C*-Algebras Of Graphs With Sinks, Iain Raeburn, Mark Tomforde, Dana Williams
Faculty of Engineering and Information Sciences - Papers: Part A
We consider graphs E which have been obtained by adding one or more sinks to a fixed directed graph G. We classify the C*-algebra of E up to a very strong equivalence relation, which insists, loosely speaking, that C*(G) is kept fixed. The main invariants are vectors WE: G0 → which describe how the sinks are attached to G; more precisely, the invariants are the classes of the WE in the cokernel of the map A – I, where A is the adjacency matrix of the graph …
Reliability Of Higher Seeding Rates Of Wheat For Increased Competitiveness With Weeds In Low Rainfall Environments, D Lemerle, R D. Cousens, G S. Gill, S J. Peltzer, M Moerkerk, C E. Murphy, D Collins, Brian R. Cullis
Reliability Of Higher Seeding Rates Of Wheat For Increased Competitiveness With Weeds In Low Rainfall Environments, D Lemerle, R D. Cousens, G S. Gill, S J. Peltzer, M Moerkerk, C E. Murphy, D Collins, Brian R. Cullis
Faculty of Engineering and Information Sciences - Papers: Part A
Increasing crop competitiveness using higher seeding rates is a possible technique for weed management in low input and organic farming systems or when herbicide resistance develops in weeds. A range of wheat seeding rates were sown and resulted in crop densities between 50–400 plants/m2 (current recommendations are 100–150 plants/m2) in the presence and absence of annual ryegrass (Lolium rigidum Gaud.) in three wheat cultivars at nine experiments in southern Australia. Wheat densities of at least 200 plants/m2 were required to suppress L. rigidum and to a lesser extent increase crop yield across a wide range …
Widmanstatten Ferrite Plate Formation In Low-Carbon Steels, Dominic Phelan, Rian Dippenaar
Widmanstatten Ferrite Plate Formation In Low-Carbon Steels, Dominic Phelan, Rian Dippenaar
Faculty of Engineering and Information Sciences - Papers: Part A
The mechanism by which Widmanstätten ferrite plates nucleate and grow in low-carbon steels has been studied. In-situ laser scanning confocal microscopy (LSCM) observations, optical microscopy, and electron backscattered diffraction (EBSD) techniques have been used to characterize the relationship between grain boundary allotriomorphs and Widmanstätten ferrite plates. The issue of where Widmanstätten ferrite plates nucleate is one of some debate, with theories including morphological instability and sympathetic nucleation. Evidence has been found that supports the theory of a sympathetic nucleation mechanism being responsible for the formation of Widmanstätten ferrite plates. The EBSD measurements have shown that low-angle misorientations of between 5 …
Bifurcation Phenomena For An Oxidation Reaction In A Continuously Stirred Tank Reactor. Ii Diabatic Operation, Mark Nelson, Harvinder Sidhu
Bifurcation Phenomena For An Oxidation Reaction In A Continuously Stirred Tank Reactor. Ii Diabatic Operation, Mark Nelson, Harvinder Sidhu
Faculty of Engineering and Information Sciences - Papers: Part A
We extend an investigation into the bifurcation phenomena exhibited by an oxidation reaction in an adiabatic reactor to the case of a diabatic reactor. The primary bifurcation parameter is the fuel fraction; the inflow pressure and inflow temperature are the secondary bifurcation parameters. The inclusion of heat loss in the model does not change the static steady-state bifurcation diagram; the organising centre is a pitchfork singularity for both the adiabatic and diabatic reactors. However, unlike the adiabatic reactor, Hopf bifurcations may occur in the diabatic reactor. We construct the degenerate Hopf bifurcation curve by determining the double-Hopf locus. When the …
Dynamic Properties And Liquefaction Behavior Of Granular Materials Using Discrete Element Method, S V. Dinesh, T G. Sitharam, J S Vinod
Dynamic Properties And Liquefaction Behavior Of Granular Materials Using Discrete Element Method, S V. Dinesh, T G. Sitharam, J S Vinod
Faculty of Engineering and Information Sciences - Papers: Part A
Dynamic properties of the soil such as shear modulus and damping ratio are important parameters in the prediction of the dynamic response of geotechnical engineering structures. Though these properties are dependent on several factors, strain amplitude and confining pressure have a major effect. Liquefaction is another important phenomenon associated with the undrained response of granular materials in loose state. In this paper, the results of the numerical simulation of cyclic triaxial shear tests on three-dimensional assembly consisting of 1000 sphere particles using Discrete Element Method (DEM) have been reported under undrained conditions. From the results, the shear modulus and damping …
Placement And Penetration Of Distributed Generation Under Standard Market Design, Ashish Agalgaonkar, S V. Kulkarni, S A. Khaparde, S A. Soman
Placement And Penetration Of Distributed Generation Under Standard Market Design, Ashish Agalgaonkar, S V. Kulkarni, S A. Khaparde, S A. Soman
Faculty of Engineering and Information Sciences - Papers: Part A
Distributed Generation (DG) can help in reducing the cost of electricity to the costumer, relieve network congestion and provide environmentally friendly energy close to load centers. Its capacity is also scalable and it provides voltage support at distribution level. Hence, DG placement and penetration level is an important problem for both the utility and DG owner. The cost of electricity as a commodity depends upon market model. The restructured power markets are slowly maturing with standardizations like Standard Market Design (SMD). The key feature of SMD is the Locational Marginal Pricing (LMP) scheme. This paper examines placement and penetration level …
Fricke Dosimetry For Synchrotron Stereotactic Radiotherapy, C Boudou, M C Biston, J F Adam, A Joubert, S Corde, A M Charvet, F Esteve, H Elleaume
Fricke Dosimetry For Synchrotron Stereotactic Radiotherapy, C Boudou, M C Biston, J F Adam, A Joubert, S Corde, A M Charvet, F Esteve, H Elleaume
Faculty of Engineering and Information Sciences - Papers: Part A
In synchrotron stereotactic radiotherapy (SSR) the tumor is loaded with a high Z element, and exposed to monochromatic x-rays from a synchrotron source, in stereotactic conditions. The SSR treatment efficiency is related to the heavy element concentration achievable in the tumor, to the radiation energy, and the irradiation geometry [1,2]. The experimental dose verification of SSR in three dimensions with a good spatial resolution is highly desirable for radiotherapy [3]. In this study, Fricke dosimeter and Monte Carlo calculations were employed for assessing 2D dose distribution.
Community Technology Centres: A Proposed Framework For Sustainability, William J. Tibben, Carole A. Alcock
Community Technology Centres: A Proposed Framework For Sustainability, William J. Tibben, Carole A. Alcock
Faculty of Engineering and Information Sciences - Papers: Part A
The effectiveness of Community Technology Centres (CTCs) in meeting many of the challenges presented by the digital divide invites a closer scrutiny of factors that contribute to their sustainability. The success of CTCs appears to be related to the way in which these initiatives are able to respond to the multifaceted nature of the digital divide problem. However, more systematic approaches are required to enable the identification of common factors that contribute to sustainability in different contexts. The paper responds to this challenge by initially reviewing recent contributions on the digital divide debate. From a more refined understanding of what …
Using Self-Regulated Learning To Manage The Discomfort Of Becoming Fluent With Information Technology, Victoria M. Neville, Sue Bennett
Using Self-Regulated Learning To Manage The Discomfort Of Becoming Fluent With Information Technology, Victoria M. Neville, Sue Bennett
Faculty of Engineering and Information Sciences - Papers: Part A
The technologically complex and changing world of the twenty first century requires teachers who are both knowledgeable and skilled in using information technology in their pedagogical practices. The changing nature of information technology means that teachers need to be flexible in how they use information technology in their teaching, adaptable to the changes in technological developments, problem solvers in unfamiliar circumstances, and continuing learners throughout their professional life. These ideas are encapsulated in the concept of fluency with information technology, or FITness (Committee on Information Technology Literacy, 1999). This research study, in progress, uses an interpretive, qualitative methodological approach to …