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Articles 1 - 12 of 12
Full-Text Articles in Social and Behavioral Sciences
Generational Cohort Differences In Types Of Organizational Commitment, April Lavette Jones
Generational Cohort Differences In Types Of Organizational Commitment, April Lavette Jones
April Jones
In hospitals in the United States, the ratio of nurses to patients is declining, resulting in an increase in work demands for nurses. Consequently, organizations face challenges with nurses' organizational commitment. Studies have revealed generational differences, as determined by birth year, in employee levels of organizational commitment in a number of organizational settings. However, there is a gap in the literature regarding the impact of generational cohorts on the organizational commitment of nurses. The purpose of this quantitative, nonexperimental, cross-sectional design was to address whether generational cohorts of nurses differed in their levels of organizational commitment, and to investigate whether …
Over-Voltage Mitigation Within Distribution Networks With A High Renewable Distributed Generation Penetration, Joel Kennedy, Philip Ciufo, Ashish Agalgaonkar
Over-Voltage Mitigation Within Distribution Networks With A High Renewable Distributed Generation Penetration, Joel Kennedy, Philip Ciufo, Ashish Agalgaonkar
Dr Philip Ciufo
The rapid growth of grid-connected distributed generation has increased the likelihood of over-voltage occurrences in distribution networks. In recent times, much research has taken place in order to develop a control strategy to mitigate the voltage rise problem. However, most of the published strategies require re-tuning when additional resources are connected, or have a strong dependence on network parameters, such as fault level. This paper proposes a novel over-voltage mitigation scheme that has many advantages not observed in literature. Firstly, the control scheme can integrate with an existing feeder in a plug-and-play fashion. No prior analysis is necessary to configure …
Impact Of Wind Generation Mix On Transient Stability For An Interconnected Power System, Lasantha Meegahapola, Damian Flynn, Jason Kennedy, Tim Littler
Impact Of Wind Generation Mix On Transient Stability For An Interconnected Power System, Lasantha Meegahapola, Damian Flynn, Jason Kennedy, Tim Littler
Dr Lasantha G Meegahapola
The rapid growth of wind generation in many European countries is pushing power systems into uncharted territory. As additional wind generators are installed, the changing generation mix may impact on power system stability. This paper adopts the New England 39 bus system as a test system for transient stability analysis. Thermal generator models are based on a likely future plant mix for existing systems, while varying capacities of fixed-speed induction generators (FSIG) and doubly-fed induction generators (DFIG) are considered. The main emphasis here has been placed on the impact of wind technology mix on inter-area oscillations following transient grid disturbances. …
Voltage Security Constrained Reactive Power Optimization Incorporating Wind Generation, L G. Meegahapola, E Vittal, A Keane, D Flynn
Voltage Security Constrained Reactive Power Optimization Incorporating Wind Generation, L G. Meegahapola, E Vittal, A Keane, D Flynn
Dr Lasantha G Meegahapola
This paper presents a comparative analysis between conventional optimal power flow (OPF) and voltage constrained OPF strategies with wind generation. The study has been performed using the New England 39 bus system with 12 doublyfed induction generator (DFIG) based wind farms installed across the network. A voltage security assessment is carried out to determine the critical wind farms for voltage stability enhancement. The power losses and individual wind farm reactive power generation have been compared with and without voltage stability constraints imposed on the OPF simulation. It is shown that voltage constrained OPF leads to much greater active power losses …
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Dr Lasantha G Meegahapola
Embedded generators such as wind generators can produce observable voltage fluctuations during variable wind conditions hence flicker. The flicker produced by such intermittent and fluctuating generating sources can propagate to other parts of the distribution network while creating power quality issues in distribution feeders. This study presents a flicker emission analysis for a doubly-fed induction generator (DFIG) based wind farm and investigate the pertinent factors which influence flicker propagation and attenuation in distribution feeders. Study has shown that voltage fluctuations are significantly influenced by the attenuation characteristics of various load types (i.e. constant power, impedance and current loads) connected to …
The Performance Wheel And The Small Business Pyramid: The Next Generation Of Performance Scorecards, Carol J. Mcnair, Edmund W. Watts
The Performance Wheel And The Small Business Pyramid: The Next Generation Of Performance Scorecards, Carol J. Mcnair, Edmund W. Watts
Ted Watts
A common shortcoming with respect to performance scorecards within today's businessenvironment is the misconception that one size fits all. This paper considers the historicaldevelopment, as well as the increasing variety and poorly integrated status of one of business management's most important tools - the performance scorecard.This paper traces the development of performance management systems from itshistorical inception to the present examining ways that some approaches do not addressthe specific decision making needs of many enterprises. Performance scorecards aregenerally developed with a specific type of enterprise in mind, but few have integratedthe different emphases of the different approaches.With the focus on …
Sustained Solar Hydrogen Generation Using A Dye-Sensitised Nio Photocathode/Bivo4 Tandem Photo-Electrochemical Device, Lei Tong, Akihide Iwase, Andrew Nattestad, Udo Bach, Martin Weidelener, Gunther Gotz, Amaresh Mishra, Peter Bauerle, Rose Amal, Gordon G. Wallace, Attila J. Mozer
Sustained Solar Hydrogen Generation Using A Dye-Sensitised Nio Photocathode/Bivo4 Tandem Photo-Electrochemical Device, Lei Tong, Akihide Iwase, Andrew Nattestad, Udo Bach, Martin Weidelener, Gunther Gotz, Amaresh Mishra, Peter Bauerle, Rose Amal, Gordon G. Wallace, Attila J. Mozer
Gordon Wallace
Solar hydrogen generation sustained for at least several hours is demonstrated using a dye-sensitised nickel(II) oxide photocathode and BiVO4 photoanode connected in a tandem configuration. H2 evolution rate is 120 nmol h−1 (>80% faradaic efficiency) without electrical bias or sacrificial oxidant/reductant, at pH = 7 using visible light (>420 nm).
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Dr Philip Ciufo
Embedded generators such as wind generators can produce observable voltage fluctuations during variable wind conditions hence flicker. The flicker produced by such intermittent and fluctuating generating sources can propagate to other parts of the distribution network while creating power quality issues in distribution feeders. This study presents a flicker emission analysis for a doubly-fed induction generator (DFIG) based wind farm and investigate the pertinent factors which influence flicker propagation and attenuation in distribution feeders. Study has shown that voltage fluctuations are significantly influenced by the attenuation characteristics of various load types (i.e. constant power, impedance and current loads) connected to …
Emergence: The Generation Of Material Spaces In Anthony Mccall's "Line Describing A Cone", Su Ballard
Emergence: The Generation Of Material Spaces In Anthony Mccall's "Line Describing A Cone", Su Ballard
Su Ballard
Anthony McCall's solid light film Line Describing a Cone (1973)is about the emergence of dimensionality in space. This paper uses Line Describing a Cone to discuss emergence as a material algorithmic process occurring across the media of informatic systems and installation art. Evolutionary models of emergence trace patterns, whether behavioural, spatial or genetic. Line Describing a Cone suggests the emergence of a new kind of mobilized viewer within gallery spaces who does not necessarily 'evolve' but who (through interruption and noise)becomes an interactive emergent part of the material processes of the work. Noise travels and generates the excess dimensionality within …
Emergence: The Generation Of Material Spaces In Anthony Mccall's "Line Describing A Cone", Su Ballard
Emergence: The Generation Of Material Spaces In Anthony Mccall's "Line Describing A Cone", Su Ballard
Su Ballard
This paper begins from a belief that all media are material, and that in their specificity time-based media can introduce us to different kinds of relationships and experiences across material surfaces and forces within gallery spaces. To this end, it will demonstrate how a 16mm film installation within a gallery space presents materiality as emergent. The paper focuses on an artwork that draws on installation's cinematic legacy Line Describing a Cone by Anthony McCall (1973). Line Describing a Cone is currently undergoing a renaissance of sorts possibly because it invokes a particularly affective interactive experience that echoes many works being …
Profiling Generation Y - Where Do They Travel?, Uraiporn Kattiyapornpong
Profiling Generation Y - Where Do They Travel?, Uraiporn Kattiyapornpong
Uraiporn Kattiyapornpong
While there are several studies which discuss travel behaviour of senior travellers, there is limited discussion of the travel habits of generation Y. The objective of this paper is to profile Generation Y based on their travel attitudes and behaviour in order to better understand this segment. This research utilizes data provided by the Roy Morgan Research Centre in Australia (RMRC). The data were collected in 2006 and 2007 from a large sample of 46,000 Australian respondents. Generation Y is compared to other Generations on travel motivation, holiday activities, booking methods used, media habits and destination preferences. Generation Y has …
Birds Of Passage? The New Generation Of Chinese-Australian Writers, Wenche Ommundsen
Birds Of Passage? The New Generation Of Chinese-Australian Writers, Wenche Ommundsen
Wenche Ommundsen
No abstract provided.