2,187 research outputs found
Building a Driving Simulator as an Electric Vehicle Hardware Development Tool
Driving simulators have been used to support the development of new vehicle systems for many years.
The rise of electric vehicles (EVs) as a means of reducing carbon emissions has lead to the emergence of a
number of new design challenges related to the performance of EV components and the flow of power under a
variety of circumstances. In this paper we describe the integration of an EV drive train test system with a driving
simulator to allow the performance of EV systems to be investigated while under the control of real drivers in
simulated scenarios. Such a system offers several potential benefits. The performance of EV drive trains can be
evaluated subjectively by real world users while the electrical and mechanical properties can be tested under a
variety of conditions which would be difficult to replicate using standard drive cycles
The State of the Art in Fuel Cell Condition Monitoring and Maintenance
Fuel cell vehicles are considered to be a viable solution to problems such as carbon emissions and fuel shortages for road transport. Proton Exchange Membrane (PEM) Fuel Cells are mainly used in this purpose because they can run at low temperatures and have a simple structure. Yet to make this technology commercially viable, there are still many hurdles to overcome. Apart from the high cost of fuel cell systems, high maintenance costs and short lifecycle are two main issues need to be addressed. The main purpose of this paper is to review the issues affecting the reliability and lifespan of fuel cells and present the state of the art in fuel cell condition monitoring and maintenance. The Structure of PEM fuel cell is introduced and examples of its application in a variety of applications are presented. The fault modes including membrane flooding/drying, fuel/gas starvation, physical defects of membrane, and catalyst poisoning are listed and assessed for their impact. Then the relationship between causes, faults, symptoms and long term implications of fault conditions are summarized. Finally the state of the art in PEM fuel cell condition monitoring and maintenance is reviewed and conclusions are drawn regarding suggested maintenance strategies and the optimal structure for an integrated, cost effective condition monitoring and maintenance management system
Management by objectives: a case study
Management by objectives is a relatively new phrase
in the management literature and this report investigated
some of the characteristics and implications of this approach
to management.The literature on this topic was reviewed where it was
found that management by objectives was concerned with the
identification 'of the important areas in which objectives
need to be set, the specification of the relevant objectives within these areas, and the derivation of adequate
plans to ensure that the objectives will be achieved. It
was advocated that there should be a broad range of objectives established in every area affecting the survival of
the organisation.The review of literature was followed by a case study
in which management by objectives was introduced into an
industrial organisation,, Field conditions that need to be
satisfied if action research of this kind is to be conducted were carefully examined.Working according to the principle of management by
objectives involved several phases of operations. The
first dealt with establishing objectives and corresponding
levels of performance or targets. Next was the period in
which corrective action was taken if accomplishment looked
like falling short of expectation. At the end of this
period a work review session was held in which variances
were examined, and factors preventing the achievement of
the objectives identified. This led to the establishing
of revised objectives and targets for the new period of
operation.It was found that establishing and working towards
the achievement of objectives had implications for other
management practices, It provided a means of readily
identifying the training needs within an organisation, and
could offer a rationale for formal appraisal concerning
questions of promotion and possibly aspects of salary
administration.These practical aspects of the research were supplemented by an analytical study involving the assessment of
organisational effectiveness. It was found that the
organisational units examined in this study could be
placed on a scale of effectiveness, so that those units
that were "effective" were so over a range of ten organisational criteria, while those units at the other end of
the scale were rated poorly with respect to most of the
criteria.It was also hoped, to use the same kind of criteria to
assess the change in effectiveness resulting from the
introduction of management by objectives. It was found,
however, that the period of 13 months over which the research
was conducted was too short for there to be fundamental
changes brought about in some of the organisational variables
used in the above analysis
Copyright Beyond the Classroom:a real-life experience of publishing art school dissertations (full of third-party images and at the last minute!)
The University of Dundee School of Art and Design hold a Degree Show exhibiting the work of 350 undergraduate students. This high profile, public event attracts upwards of 16,000 visitors. This year, for the first time, our Open Research team (1, and then 2 of us) was tasked with publishing Fine Art dissertations laden with third-party copyrighted material in time for the exhibition. The project was initiated by the academic supervisors in February, our Publishing Librarian started in April, and the exhibition opened in May!We will talk about the copyright conundrums thrown up by this challenge and lessons learned from this rollercoaster experience. - How do you deal with 500 copyrighted images? Redact or publish - what would you do?- Is it too late to get permission? (Almost certainly yes).- What are the different copyright rules for dissertations and publications?- Who gives undergraduates copyright advice for publishing? - Timing is everything, we have a year till the next one! This gave us the opportunity to reflect on our Libraryâs relationship with copyright, with a view to scaling up the project for next yearâs exhibition and broadening our copyright training.We hope to spark some conversation around copyright, undergraduate advocacy, and the risks we are prepared to take as librarians when it comes to publishing studentsâ work.<br/
Copyright Beyond the Classroom:a real-life experience of publishing art school dissertations (full of third-party images and at the last minute!)
The University of Dundee School of Art and Design hold a Degree Show exhibiting the work of 350 undergraduate students. This high profile, public event attracts upwards of 16,000 visitors. This year, for the first time, our Open Research team (1, and then 2 of us) was tasked with publishing Fine Art dissertations laden with third-party copyrighted material in time for the exhibition. The project was initiated by the academic supervisors in February, our Publishing Librarian started in April, and the exhibition opened in May!We will talk about the copyright conundrums thrown up by this challenge and lessons learned from this rollercoaster experience. - How do you deal with 500 copyrighted images? Redact or publish - what would you do?- Is it too late to get permission? (Almost certainly yes).- What are the different copyright rules for dissertations and publications?- Who gives undergraduates copyright advice for publishing? - Timing is everything, we have a year till the next one! This gave us the opportunity to reflect on our Libraryâs relationship with copyright, with a view to scaling up the project for next yearâs exhibition and broadening our copyright training.We hope to spark some conversation around copyright, undergraduate advocacy, and the risks we are prepared to take as librarians when it comes to publishing studentsâ work.<br/
Revealing flows in the local economy through visualisations:customers, clicks/cliques and clusters
It is well known by now, that the world has suffered an economic downturn. This has led many governments and organisations to invest resources into researching varying strategies to combat such problem. For some time now, governments have been promoting growth by encouraging local spending; we have witnessed this through ?shop local? campaigns and local currencies. We introduce BARTER a moBile sociAl netwoRking supporTing local Ethical tRading system to tackle this issue, at it?s core an information system that encompasses technology, social media and business analytics are brought together to engage customers, traders and citizens to spend locally by featuring the intrinsic and extrinsic motivations of trading local. After situating BARTER at the heart of the community (with varying traders in and around Lancaster, UK) for some time, this paper is a follow on from a ?BARTER Visualisations? design concept, reporting on the progression and recent developments in the project. Whilst these systems are in place within the community, further research is being conducted to evaluate if revealing and transforming transaction data in a playful and informative manner will help citizens better understand the flow of money in the local economy
Spatial Analysis of Northern Goshawk Territories in the Black Hills, South Dakota
The Northern Goshawk (Accipiter gentilis) is the largest of the three North American species of Accipiter and is more closely associated with older forests than are the other species. Its reliance on older forests has resulted in concerns about its status, extensive research into its habitat relationships, and litigation. Our objective was to model the spatial patterns of goshawk territories in the Black Hills, South Dakota, to make inferences about the underlying processes. We used a modification of Ripley\u27s K function that accounts for inhomogeneous intensity to determine whether territoriality or habitat determined the spacing of goshawks in the Black Hills, finding that habitat conditions rather than territoriality were the determining factor. A spatial model incorporating basal area of trees in a stand of forest, canopy cover, age of trees \u3e23 cm in diameter, number of trees per hectare, and geographic coordinates provided good fit to the spatial patterns of territories. There was no indication of repulsion at close distances that would imply spacing was determined by territoriality. These findings contrast with those for the Kaibab Plateau, Arizona, where territoriality is an important limiting factor. Forest stands where the goshawk nested historically are now younger and have trees of smaller diameter, probably having been modified by logging, fire, and insects. These results have important implications for the goshawk\u27s ecology in the Black Hills with respect to mortality, competition, forest fragmentation, and nest-territory protection
Primary Ciliary Dyskinesia
Primary ciliary dyskinesia (PCD) is a recessive genetically heterogeneous disorder of motile cilia with chronic otosinopulmonary disease and organ laterality defects in âŒ50% of cases. The prevalence of PCD is difficult to determine. Recent diagnostic advances through measurement of nasal nitric oxide and genetic testing has allowed rigorous diagnoses and determination of a robust clinical phenotype, which includes neonatal respiratory distress, daily nasal congestion, and wet cough starting early in life, along with organ laterality defects. There is early onset of lung disease in PCD with abnormal airflow mechanics and radiographic abnormalities detected in infancy and early childhood
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