245 research outputs found
Monorail technology - A rapid and cost effective method of decline development
No full textE Chanda and B Besahttp://www.ausimm.com.au/publications/epublication.aspx?ID=431
An investigation of underground monitoring and communication system based on radio waves attenuation using ZigBee
No full textAbstract not availableMohammad Ali Moridi, Youhei Kawamura, Mostafa Sharifzadeh, Emmanuel Knox Chanda, Hyongdoo Jan
Development of underground mine monitoring and communication system integrated ZigBee and GIS
No full textAbstract not availableMohammad Ali Moridi, Youhei Kawamura, Mostafa Sharifzadeh, Emmanuel Knox Chanda, Markus Wagner, Hyongdoo Jang, Hirokazu Okaw
Design of a continuous monorail drilling system for decline development
No full textE Chanda, B Besa and M Kuruppuhttp://www.ausimm.com.au/publications/epublication.aspx?ID=473
Design of pneumatic loading system for monorail application
No full textElectrical Monorails have several advantages over trackless haulage in underground mining, such as ability to negotiate steep vertical and tight horizontal curves, small operating room and less diesel fumes. It has been demonstrated that loading time is the main drawback to high advance rates in monorail application whereby a loader is used to load rocks into monorail containers. A pneumatic loading system can be expected to reduce the loading time. This paper describes a pneumatic loading system for monorail application and provides an overview of the techniques used in lifting broken rocks from the development face into the monorail hopper.Emmanuel K. Chanda and Bunda Bes
Racializing white residues: seditious Anglo-Indians and others
No full textMy dissertation interrogates the discursive residues of the Anglo-Indian question in decolonized India. To problematize these residues, I structure my dissertation as a fragmented genealogy of colonial and post-colonial perceptions of Anglo-Indians. I open my dissertation by showing how, since the late-nineteenth century, Anglo-Indians were claimed to be only of part-European racial provenance, and tautologically had their bodies deemed sexually deviant. Their bodies being, like those of their non-Anglo-Indian counterparts, in fact of uncertain racial intermixture, I argue that Anglo-Indians inhabit mongrel bodies—bodies in a state of continual flux of class and race, inhabiting a multiplicity of pluralized communities. The ethical end of the decolonized Indian nation-state, I accordingly suggest, is to facilitate the recognition of mongrelism as an inevitable phenomenon across groups—one that fractures monolithic conceptions of race and community. To flesh out this argument, I conduct readings from an archive of novels, historiographic treatises, short stories, memoirs, films, and cartoons. The figures whose texts I examine include, among others, colonial Anglo-Indian ‘prostitute’ Amelia Horne, Anglo-Indian anti-racism activist Cedric Dover, Bengali novelist Sharadindu Bandyopadhyay, diasporic English writer Aubrey Menen, Indian cartoonist Mario Miranda, Bengali film director Satyajit Ray, Anglo-Indian politician and historiographer Frank Anthony, and British-Indian writer Ruskin Bond.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2020-08-01The student, Debojoy Chanda, accepted the attached license on 2018-07-04 at 01:48.The student, Debojoy Chanda, submitted this Dissertation for approval on 2018-07-04 at 02:33.This Dissertation was approved for publication on 2018-07-06 at 10:04.DSpace SAF Submission Ingestion Package generated from Vireo submission #12728 on 2018-09-27 at 11:16:29Made available in DSpace on 2018-09-27T16:30:17Z (GMT). No. of bitstreams: 2
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Previous issue date: 2018-07-06Embargo set by: Seth Robbins for item 107771
Lift date: 2020-09-27T16:30:34Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 107771
Lift date: 2020-09-27T16:31:43Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 107771
Lift date: 2020-09-27T16:34:29Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 107771 on 2020-09-28T09:15:16Z
A computer simulation model of a monorail-based mining system for decline development
No full textThis article describes a computer simulation model used to estimate the performance of a conceptual monorail system to be used in decline development. The system consists of the drilling and loading components that use monorail technology to drill and clean the face during decline development. The two systems work simultaneously at the face in such a way that as the top part of the face is being drilled the pneumatic loading system cleans the face. A simulation model is used to estimate the advance rate per shift against which operational performance is measured. GPSS/H simulation software and PROOF animation technology are used to model the two systems. Results indicate that the monorail system performs significantly better than the conventional loader-truck mining system in terms of total cycle time. There is a reduction of 22.1% (or approximately 2.4 h) in the total cycle time when the monorail system is applied.Emmanuel K. Chanda and Bunda Bes
Content delivery in software defined networks
No full textInformation Centric Architectures view content as the narrow waist of the networking stack. This abstraction allows routing based on the content name, rather than the network locator of the content consumer and producer. We present ContentFlow, an Information Centric network architecture which supports content routing by mapping the content name to a OpenFlow de ned ow based on TCP and IP semantics. And, thus enables the use of OpenFlow switches to achieve content routing over a legacy IP architecture. ContentFlow is viewed as an evolutionary step between the current IP networking architecture, and a full edged ICN architecture. It supports content man- agement, content caching and content routing at the network layer, while using a legacy OpenFlow infrastructure and a modi ed controller. By e ciently using the content in- formation available in the network, ContentFlow supports e cient tra c engineering. Also, ContentFlow is transparent from the point of view of the client and the server, and can be inserted in between without modi cation at either end. The architecture and implementation of ContentFlow on top of the existing OpenFlow software de ned networking framework is described. Performance of ContentFlow is evaluated using a prototype implementation of an enterprise SDN network with Floodlight controller and multiple virtualized OpenFlow switches. The results show that ContentFlow does result in reduced content access delay in comparison to a legacy architectures.M.S.Includes bibliographical referencesby Abhishek Chand
A comparative study of truck cycle time prediction methods in open-pit mining
No full textPurpose – The purpose of this paper is to compare the predictive capability of three methods of truck cycle time estimation in open-pit mining: computer simulation, artificial neural networks (NNs), and multiple regressions (MRs). The aim is to determine the best method. The most common method currently used is computer simulation. Design/methodology/approach – Truck cycle times at a large open pit mine are estimated using computer simulation, artificial NNs, and MRs. The estimated cycle times by each method are in turn compared to the actual cycle times recorded by a computerized mine monitoring system at the same mine. The errors associated with each method relative to the actual cycle times are documented and form the basis for comparing the three methods. Findings – The paper clearly indicates that computer simulation methods used in predicting truck cycle times in open-pit mining underestimate and overestimate the results for short and long hauls, respectively. It appears that both NN and regression models are superior in their predictive abilities compared to computer simulations. Research limitations/implications – The cycle time prediction models developed apply to a specific mine site and one has to be careful not to directly apply these models to other operations. Practical implications – The paper describes the implementation of regression and NN modelling. An opportunity exists for mines to utilise the large volumes of data generated to predict truck haulage cycle times more accurately and hence, improve the quality of mine planning. Originality/value – The paper addresses an area of need in the mining industry. Accurate prediction of cycle times is critical to mine planners as it impacts on production targets and hence, the budgets.Emmanuel K. Chanda, Steven Gardine
SPARKPLUS for Self- and Peer Assessment on Group-Based Honours’ Research Projects
No full textThis paper explores an application of an online tool SPARKPLUS (Self and Peer Assessment Resource Kit) for the self and peer assessment on the group-based Honours’ research projects. The Honours’ research projects in School of Civil, Environmental Engineering at University of Adelaide are running in a small group of students (typically four students or less) working with an academic supervisor in a selected area for one year. Since the research project is self-directed study, it is very difficult to fairly assess the contribution of individual students to the group-based research project. The paper-based method of self and peer assessment for the Honour’s research projects was used in the previous years. The same mark was often distributed and no feedback was given. Both the students and academic staff were not satisfied with the paper-based method of self and peer assessment. Thus an online tool SPARK PLUS together with a set of assessment criteria was used for the self and peer assessment of the Honours’ research projects in 2010. Thirty-seven groups participated in the self and peer assessment of using SPARK PLUS in semester one 2010 and a series of results from the online self and peer assessment were obtained and analysed. Feedback sessions were held and substantial feedback was received from students. Based on the feedback, suggestions were made on improving use of the online tool for self and peer assessment on the Honours’ research project.Chengqing Wu, Emmanuel Chanda and John Willisonhttp://www.adelaide.edu.au/erg
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