ORCID Profile
0000-0002-8434-0525
Current Organisation
Murdoch University
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Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2021
Publisher: Wiley
Date: 13-06-2022
DOI: 10.1002/AJS4.170
Abstract: Consumer‐directed care (CDC) programmes, in principle, provide consumers with choices around who provides care services to them, what services and when. However, literature around consumer behaviour of older adults, especially concerning the factors that may support home care choices, is sparse. The purpose of this study was to understand the decision‐making processes and spending preferences of community‐dwelling seniors assessed eligible for CDC home care services. We completed an explorative inquiry using a “think‐aloud” technique with eligible consumers in South Australia. The inquiry had two components. First, consumers used imitation money to simulate the purchase of home care supports while talking out loud their decision‐making processes. Then, semi‐structured interviews were completed to identify underlying thoughts that informed the decisions made and spending preferences. Fifteen consumers, mean age 82 years (range 70–94), participated. The most frequently prioritised choice was domestic assistance. However, choices were made based on a perceived hierarchy of need (due to limits placed on available budgets for care). Interview data revealed that the decision making and service preferences were also based on limited knowledge about what was available. Consumers revealed perceived value in purchasing expert advice to guide their choices and preference for relational not transactional service delivery.
Publisher: Springer Singapore
Date: 2014
Publisher: IEEE
Date: 04-2017
Publisher: Springer Singapore
Date: 2014
Publisher: IEEE
Date: 11-2017
Publisher: IEEE
Date: 04-2017
Publisher: IEEE
Date: 11-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2020
Publisher: Springer Singapore
Date: 2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2014
Publisher: IEEE
Date: 12-2017
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 07-2014
Publisher: IEEE
Date: 03-2016
Publisher: Springer International Publishing
Date: 2017
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2020
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2020
Publisher: MDPI AG
Date: 10-11-2021
DOI: 10.3390/EN14227514
Abstract: The two common mechanisms of load-shedding and renewable curtailment can prevent provisional overloading and excessive generation and the subsequent unacceptable voltage and frequency deviation in standalone microgrids (MGs), which makes MGs less resilient and reliable. However, instead of enabling load-shedding or renewable curtailment, such overloading or over-generation problems can be alleviated more efficiently and cost-effectively by provisionally interconnecting the neighboring MGs to exchange power amongst themselves. In such a scheme, the interconnected MGs can supply their local demand, as well as a portion of the demand of the adjacent MGs. In order to implement this strategy, a three-phase ac link can be used as the power exchange network, while each MG is coupled to the link through a back-to-back power electronics converter, in order to maintain the autonomy of each MG if they are eachoperated under different standards. This paper proposes a suitable decentralized power management strategy without a communication link between the MGs to achieve power-sharing amongst them and alleviate unacceptable voltage and frequency deviation along with the required control technique for the power electronic converters, which can be implemented at the primary level based on the measurement of the local parameters only. To this end, one of the converters should always regulate the dc link voltage while the other converter should operate in droop control mode when the MG is healthy and in constant PQ mode when overloaded or over-generating. Suitable status detection and mode transition algorithms and controllers were also developed and are proposed in this paper. The performance of the proposed power exchange and control mechanisms were evaluated and verified via PSIM®-based numerical simulation studies. The stability and sensitivity of the proposed power exchange topology are also analyzed against several critical design and operational parameters.
Publisher: IOP Publishing
Date: 07-2017
Publisher: Springer International Publishing
Date: 2017
Publisher: Springer Science and Business Media LLC
Date: 16-01-2019
Publisher: Institution of Engineering and Technology (IET)
Date: 25-10-2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2020
Publisher: Wiley
Date: 11-2020
DOI: 10.1111/AJAG.12875
Abstract: To evaluate the cost‐effectiveness of a 12‐week Exercise Physiology (EP) program for people living in a residential aged care facility. A within‐study pre‐ and postintervention design to calculate incremental cost‐effectiveness ratios per quality‐adjusted life years gained. A health service provider perspective was used. Fifty‐nine participants enrolled in a 12‐week program. The program cost was A$514.30 per resident. At a willingness‐to‐pay threshold of A$64 000, the likelihood of being cost‐effective of the program is approximately 60%, due to a small increase in participants’ quality of life, as reported by care staff. The model showed great variance, depending on who rated the participants’ quality of life outcomes. It is uncertain that a 12‐week EP program is cost‐effective based on the evidence of the current trial. However, it appears that a low‐cost program can produce small improvements for residents in care facilities.
Publisher: IEEE
Date: 06-2006
Publisher: IEEE
Date: 11-2017
Publisher: IEEE
Date: 11-2011
Publisher: Elsevier BV
Date: 12-2016
Publisher: Wiley
Date: 06-09-2018
Abstract: Randomised trials have demonstrated that occupational therapy can delay functional decline, improve quality of life and increase leisure participation in people with dementia. However, surveys conducted with occupational therapists suggest that clinical practice does not reflect the type of intervention shown to be effective in research studies. Case note audits can be used to quantify practice and demonstrate how and where provision of care could improve without the potential bias associated with self-report. A total of 87 occupational therapy case notes were audited from different service contexts in two states in Australia. The case notes were reviewed against criteria including duration of service, assessments conducted and interventions used. Descriptive statistics were used to present the data and examine associations between intervention, age of the person with dementia and whether or not the person lived alone. Services tended to be short-term with an average of 2.1 consultations per referral. The most common assessments related to home safety, falls risk and function. Intervention most commonly focussed on referrals to other services, environmental modification advice and assistive device prescription. This audit reveals that current occupational therapy practice for people with dementia focusses on assessment and management of risk and is usually limited to a couple of consultations. Future work should seek to evaluate if such approaches to care are effective for people with dementia.
Publisher: Elsevier BV
Date: 12-2018
Publisher: Wiley
Date: 03-08-2021
Abstract: Goal setting is an integral part of the rehabilitation process and assists occupational therapists to target therapy towards achieving meaningful outcomes. People with mild cognitive impairment or dementia may experience barriers participating in goal setting due to preconceptions that the person cannot participate owing to changes in both cognitive and communicative abilities. The aim of this review was to identify goal setting approaches, common goals identified, and enablers and barriers to goal setting for people with mild cognitive impairment or dementia participating in specific rehabilitation programmes. Four electronic databases were searched in April 2020 for English language articles that described goal setting processes during a rehabilitation programme for people with mild cognitive impairment or dementia. Studies of all designs were included. Two authors screened citations and full text articles. Data were extracted, synthesised, and presented narratively. Twenty‐seven studies met the eligibility criteria. Both structured and nonstructured goal setting methods were used with common tools including the Canadian Occupational Performance Measure, the Bangor Goal Setting Interview and Goal Attainment Scaling. The nature of goals tended to depend on the scope of the rehabilitation programme in which the person was involved. Goal setting was more difficult for people with more advanced symptoms of dementia and when staff lacked skills and experience working with people with dementia. Use of a structured approach to goal setting, establishment of therapeutic rapport, in idualisation of goals, and family involvement were reported to be beneficial. Collaborative goal setting is a foundation of rehabilitation for people with dementia and should not be avoided due to preconceptions that the person cannot participate. Results suggests that occupational therapists can use a number of strategies to maximise participation and engagement and play a pivotal role in upskilling staff to enable effective goal setting for people with mild cognitive impairment or dementia.
Publisher: IEEE
Date: 2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2019
Publisher: IEEE
Date: 10-2015
Publisher: Elsevier BV
Date: 09-2017
Publisher: IEEE
Date: 07-2010
Publisher: Institution of Engineering and Technology (IET)
Date: 23-03-2021
DOI: 10.1049/STG2.12033
Publisher: Hindawi Limited
Date: 14-11-2018
DOI: 10.1002/ER.4268
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2015
Publisher: Hindawi Limited
Date: 12-03-2018
DOI: 10.1111/HSC.12553
Abstract: With the ageing of the world's population comes significant implications for nearly all sectors of society, including health and aged care spending. Health and aged care systems need to respond to the increasing need for services for older people. Occupational therapy is concerned with maintaining a person's functional independence and well-being from preventative and treatment perspectives. The aim of this systematic review was to identify the costs and outcomes of occupational therapy for people with cognitive and/or functional decline. The searches for this review were conducted on 23 September 2016 and updated on 20 April 2017. Full economic evaluation studies, partial economic evaluations, randomised trials reporting estimates of resource use or costs associated with intervention(s) and comparator(s) and studies with pre- and post-intervention cost comparators were included. Thirteen studies met the inclusion criteria. The type and duration of occupational therapy intervention in the included studies varied, ranging from one-off assessments through to systematic multicomponent programmes. Results suggested that structured occupational therapy interventions which comprised of multiple consultations and engaged caregivers delivered better functional and economic outcomes.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2018
Publisher: IEEE
Date: 11-2017
Publisher: IEEE
Date: 12-2016
Publisher: IEEE
Date: 11-2017
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2015
Publisher: IEEE
Date: 11-2017
Publisher: IEEE
Date: 06-2018
Publisher: Wiley
Date: 02-2018
Publisher: IEEE
Date: 09-2016
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2023
Publisher: IEEE
Date: 07-2011
Publisher: IEEE
Date: 09-2014
Publisher: Hindawi Limited
Date: 19-05-2020
DOI: 10.1111/HSC.13013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2018
Publisher: MDPI AG
Date: 04-2020
DOI: 10.3390/EN13071613
Abstract: The short-term variability of photovoltaic (PV) system-generated power due to ambient conditions, such as passing clouds, represents a key challenge for network planners and operators. Such variability can be reduced using a geographical smoothing technique based on installing multiple PV systems over certain locations at distances of meters to kilometers. To accurately estimate the PV system’s generated power during cloud events, a variability reduction index (VRI), which is a function of several parameters, should be calculated precisely. In this paper, the Wavelet Transform Technique (WTT) along with Adaptive Neuro Fuzzy Inference System (ANFIS) are used to develop new models to estimate the PV system’s power output during cloud events. In this context, irradiance data collected from one PV system along with other parameters, including ambient conditions, were used to develop the proposed models. Ultimately, the models were validated through their application on a 0.7 km2 PV plant with 16 rooftop PV systems in Brisbane, Australia.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Publisher: IEEE
Date: 07-2014
Publisher: MDPI AG
Date: 10-01-2017
DOI: 10.3390/JSAN6010001
Publisher: Informa UK Limited
Date: 10-12-2013
Publisher: IEEE
Date: 11-2016
Publisher: IEEE
Date: 11-2016
Publisher: Elsevier BV
Date: 02-2014
Publisher: IEEE
Date: 11-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2016
Publisher: Oxford University Press (OUP)
Date: 17-08-2021
Abstract: The translation of reablement programs into practice is lagging despite strong evidence for interventions that maintain function for the person living with dementia as well as improve carer well-being. The aim was to evaluate the implementation of an evidence-based program, Care of People with Dementia in Their Environments (COPE), into health services. An implementation-effectiveness hybrid design was used to evaluate implementation outcomes while simultaneously involving a pragmatic pre–post evaluation of outcomes for people with dementia. We report uptake, fidelity to intervention, outcomes for people living with dementia and carers, and beliefs and behaviors of interventionists contributing to successful implementation. Seventeen organizations in Australia across 3 health contexts, 38 occupational therapists, and 17 nurses participated in training and implementation. While there were challenges and delays in implementation, most organizations were able to offer the program and utilized different models of funding. Overall, we found there was moderate fidelity to components of the program. Pre–post outcomes for carer well-being and coping (Perceived Change Index, p & .001) and activity engagement of the person living with dementia (p = .002) were significantly increased, replicating previous trial results. What contributed most to therapists implementing the program (Determinants of Implementation Behaviour Questionnaire) was a stronger intent to deliver (p & .001), higher confidence (p & .001), a sense of control in delivery (p = .004), and a belief the program was very useful to their clients (p = .002). This study demonstrated that implementation is possible in multiple health systems and beneficial to in iduals and their families.
Publisher: Elsevier BV
Date: 08-2010
Publisher: Elsevier BV
Date: 12-2014
Publisher: IEEE
Date: 09-2016
Publisher: Walter de Gruyter GmbH
Date: 26-02-2016
Abstract: This paper presents two different techniques of a wind energy conversion system (WECS) integration with an islanded microgrid (MG). The islanded microgrid operates in a frequency droop control where its frequency can vary around 50 Hz. The permanent magnet synchronous generator (PMSG) based variable speed WECS is considered, which converts wind energy to a low frequency ac power. Therefore it needs to be connected to the microgrid through a back to back (B2B) converter system. One way of interconnection is to synchronize the MG side converter with the MG bus at which it is connected. In this case, this converter runs at the MG frequency. The other approach is to bring back the MG frequency to 50 Hz using the isochronization concept. In this case, the MG side converter operates at 50 Hz. Both these techniques are developed in this paper. The proposed techniques are validated through extensive PSCAD/EMTDC simulation studies.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2019
Publisher: IEEE
Date: 12-2014
Publisher: IEEE
Date: 12-2014
Publisher: IEEE
Date: 06-2018
Publisher: Springer Singapore
Date: 2014
Publisher: IEEE
Date: 07-2012
Publisher: Elsevier BV
Date: 09-2011
Publisher: IEEE
Date: 07-2012
Publisher: Institution of Engineering and Technology (IET)
Date: 2012
Publisher: IEEE
Date: 12-2013
Publisher: IEEE
Date: 06-2018
Publisher: IEEE
Date: 09-2014
Publisher: Informa UK Limited
Date: 03-04-2018
Publisher: IEEE
Date: 09-2014
Publisher: Informa UK Limited
Date: 14-12-2017
Publisher: Wiley
Date: 28-11-2014
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2016
Publisher: IEEE
Date: 09-2014
Publisher: Institution of Engineering and Technology (IET)
Date: 02-2016
Publisher: Elsevier BV
Date: 09-2023
Publisher: Elsevier BV
Date: 02-2021
Publisher: Informa UK Limited
Date: 02-04-2016
Publisher: IEEE
Date: 06-2018
Publisher: IEEE
Date: 06-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Publisher: IEEE
Date: 12-2016
Publisher: IEEE
Date: 12-2016
Publisher: MDPI AG
Date: 02-08-2023
DOI: 10.3390/EN16155774
Abstract: A microgrid (MG) is always prone to the uncertainties of its demand variation and the generation of its non-dispatchable renewable sources when operating in islanded mode. Such variation events can lead to the voltage or frequency (VF) violation in the MG. However, there are some techniques available in the literature that can predict these events a few minutes ahead. Using such techniques, the VF violation can also be predicted and prevented with the introduction of a suitable preventive controller. Hence, this paper proposes a look-ahead controller that uses the short-horizon prediction data of demand and renewable generation to determine any prospective VF violation. If a violation is predicted, the proposed technique will aim to define the most optimal generation level of dispatchable sources, the MG’s best network configuration and the engagement level of the supportive actions, such as exchanging power with neighboring microgrids, utilizing energy storages, a demand response and renewable energy curtailment (if and when available). The technical, reliability and environmental aspects of the MG are considered within the proposed technique along with the operational cost. The determined optimal control variables are then sent to the local controllers to apply the proper arrangements in the system to retain the VF within the desired range. The performance of the developed technique is validated through extensive numerical analyses in MATLAB.
Publisher: Cambridge University Press (CUP)
Date: 16-01-2020
Abstract: Evidence-based reablement programs for people with dementia and their caregivers are not routinely implemented in practice. These programs have been shown to be effective in delaying functional decline and improving caregiver wellbeing. Yet, little is known about the experiences of those participating in such programs. To describe experiences and outcomes of participating in a dementia reablement program, the Care of Persons with dementia in their Environments (COPE), in Australia. Purposeful s ling was used and semi-structured interviews were completed with people with dementia and their caregivers who received the COPE program in two different states in Australia. The interviews explored the participants’ experiences with the program as well as how they are managing after program completion. Thematic analysis was used to identify themes from the interviews. A Likert scale was used to rate the value of the program. Ten dyads (person with dementia and/or their caregiver) were interviewed. Participation in the program was rated (mostly) very valuable. The ongoing collaboration between the therapist and caregiver was considered empowering. The program promoted participation in everyday activities for the person with dementia and appeared to give a ‘second chance’ to remain in their own homes and communities. Participation in reablement programs (such as the COPE program) has the potential to re-engage people with dementia in meaningful roles and activities in their chosen environments. A therapeutic relationship and in idualized intervention approaches tailored to the participants’ needs and readiness foster positive experiences and confidence.
Publisher: IEEE
Date: 2013
Publisher: Springer Science and Business Media LLC
Date: 09-05-2018
Publisher: MDPI AG
Date: 27-07-2023
DOI: 10.3390/EN16155658
Abstract: Battery energy storage systems can be integrated with photovoltaic (PV)-diesel microgrids as an enabling technology to increase the penetration of PV systems and aid microgrid stability by smoothing out the power fluctuations of the PV systems. This paper focuses on this topic and aims to derive correlations between the optimal capacity of the smoothing batteries and variabilities in the daily solar irradiance. To this end, the two most commonly used moving average and r rate control techniques are employed on a real solar irradiance dataset with a 1-min resolution for a full calendar year across 11 sites in Australia. The paper then presents the developed empirical model, based on linear regressions, to estimate the batteries’ optimal capacity without requiring detailed simulation studies, which are useful for practitioners at the early stages of a project’s feasibility evaluation. The performance of the developed technique is validated through numerical simulation studies in MATLAB®. The study demonstrates that the empirical model provided reasonably accurate estimates when using the moving average smoothing technique but had limited accuracy under the r rate control technique.
Publisher: IEEE
Date: 10-2015
Publisher: IEEE
Date: 12-2016
Publisher: Elsevier BV
Date: 06-2017
Publisher: IEEE
Date: 2013
Publisher: IEEE
Date: 11-2016
Publisher: IEEE
Date: 09-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2022
Publisher: Elsevier BV
Date: 2017
Publisher: IEEE
Date: 09-2015
Publisher: Elsevier BV
Date: 05-2017
Publisher: Institution of Engineering and Technology (IET)
Date: 08-2015
Publisher: Elsevier BV
Date: 03-2016
Publisher: MDPI AG
Date: 10-01-2022
DOI: 10.3390/SU14020733
Abstract: Historically, minimum system demand has usually occurred overnight. However, in recent years, the increased penetration of rooftop photovoltaic systems (RPVs) has caused an even lower demand at midday, forcing some of the conventional generators to shut down only hours before the evening peak demand period. This further complicates the job of power system operators, who need to run the conventional generator at the minimum stable level at the midday low-demand period so that they can reliably supply power during the peak periods. Employing a community battery storage system can alleviate some of the technical issues caused by the high penetration of RPVs. This paper proposed a design criterion for community battery energy storage systems and employed the battery for the improvement of the duck curve profile and providing the desired level of peak-shaving. Furthermore, remote communities with high penetration of RPVs with a community battery energy storage can achieve the desired level of self-sufficiency. To this end, this study recommends and confirms an applicable design criterion for community battery energy storage. The study shows that the suitable size of community battery storage should be based on the community’s daily excess generation and consumption requirements. The results of various scenarios performed on the proposed design criterion show the extent to which the desired objectives of peak-shaving, duck curve mitigation, and self-sufficiency can be achieved.
Publisher: IEEE
Date: 06-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: Elsevier BV
Date: 10-2017
Publisher: IEEE
Date: 12-2017
Publisher: Elsevier BV
Date: 06-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2021
Publisher: IEEE
Date: 11-2016
Publisher: IEEE
Date: 09-2015
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2015
Publisher: Wiley
Date: 26-01-2016
Abstract: Men's Sheds are community spaces where socialisation occurs alongside participation in meaningful activities. Shed activities and socialisation make them useful for supporting transition to adulthood of 'at-risk' young people through meaningful occupations. Many sheds have implemented intergenerational mentoring programmes. However, many programmes are established on an ad-hoc basis without specific attention to factors that may support effective and sustainable outcomes. We aimed to inform future programmes by exploring different programmes to provide insight into the purpose, design and programme characteristics that are perceived as beneficial for young males. Four Sydney-based sheds providing intergenerational mentoring programmes were selected. We interviewed shed coordinators, mentors and mentees to explore their perceptions of programme characteristics that supported mentees' transition to adulthood. Thematic analysis techniques were used to first analyse and understand the unique context of each programme and these were then merged and integrated to identify the most helpful aspects of these mentoring programmes. Mentor attitude towards the mentees, freedom to make independent choices and the nature and perceived usefulness of the project were considered the most significant characteristics of these programmes. This was the first known examination of the different characteristics of Men's Sheds intergenerational mentoring programmes. On the basis of our findings, we have made recommendations to help guide the planning and implementation of future programmes. While our findings largely support previous research on mentoring programmes, findings from this study suggest that 'expert skills' may not be as important as mentor attitude to working with the mentees.
Publisher: IEEE
Date: 03-2016
Publisher: IEEE
Date: 07-2006
Publisher: IEEE
Date: 09-2014
Publisher: Institution of Engineering and Technology (IET)
Date: 02-2014
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2020
Publisher: Informa UK Limited
Date: 02-2021
DOI: 10.2147/JMDH.S295549
Publisher: MDPI AG
Date: 16-08-2023
DOI: 10.3390/EN16166009
Abstract: As a technique to control the voltage drop at network peak periods and voltage rise at middays when a high number of rooftop photovoltaic systems exist in a low-voltage feeder (LVF), two or more neighboring LVFs can be coupled. To add voltage controllability to the coupling point, a distribution static compensator (DSTATCOM) can be installed. An important issue for such a system is its operation under short-circuit conditions in one of the LVFs and relevant protection aspects. This paper investigates the performance of such a system under fault conditions and presents a protection scheme that can achieve the desired operation of the system, under short-circuit faults in either of the LVFs. The performance of the system of coupled LVFs is investigated by numerical analysis in MATLAB while the dynamic feasibility of the proposed technique is validated by simulation studies in PSCAD/EMTDC.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2020
Publisher: SAGE Publications
Date: 2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2019
Publisher: IEEE
Date: 07-2007
Publisher: IEEE
Date: 03-2016
Publisher: IEEE
Date: 06-2015
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2014
Publisher: IEEE
Date: 09-2017
Publisher: IEEE
Date: 06-2016
No related grants have been discovered for Farhad Shahnia.