31 results on '"Millar, Ross"'
Search Results
2. Patient safety and the law: an introduction
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Tingle, John, primary, Milo, Caterina, additional, Msiska, Gladys, additional, and Millar, Ross, additional
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- 2023
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3. Quality and the NHS: fair-weather friends or a longstanding relationship?
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Millar, Ross, primary, Waring, Justin, additional, and Lalani, Mirza, additional
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- 2023
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4. Towards achieving interorganisational collaboration between health-care providers: a realist evidence synthesis
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Millar Ross, Aunger Justin Avery, Rafferty Anne Marie, Greenhalgh Joanne, Mannion Russell, McLeod Hugh, and Faulks Deborah
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collaboration ,partnering ,partnership working ,integration ,health care ,improvement ,realist review ,realist synthesis ,realist evaluation ,programme theory ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Background Interorganisational collaboration is currently being promoted to improve the performance of NHS providers. However, up to now, there has, to the best of our knowledge, been no systematic attempt to assess the effect of different approaches to collaboration or to understand the mechanisms through which interorganisational collaborations can work in particular contexts. Objectives Our objectives were to (1) explore the main strands of the literature about interorganisational collaboration and to identify the main theoretical and conceptual frameworks, (2) assess the empirical evidence with regard to how different interorganisational collaborations may (or may not) lead to improved performance and outcomes, (3) understand and learn from NHS evidence users and other stakeholders about how and where interorganisational collaborations can best be used to support turnaround processes, (4) develop a typology of interorganisational collaboration that considers different types and scales of collaboration appropriate to NHS provider contexts and (5) generate evidence-informed practical guidance for NHS providers, policy-makers and others with responsibility for implementing and assessing interorganisational collaboration arrangements. Design A realist synthesis was carried out to develop, test and refine theories about how interorganisational collaborations work, for whom and in what circumstances. Data sources Data sources were gathered from peer-reviewed and grey literature, realist interviews with 34 stakeholders and a focus group with patient and public representatives. Review methods Initial theories and ideas were gathered from scoping reviews that were gleaned and refined through a realist review of the literature. A range of stakeholder interviews and a focus group sought to further refine understandings of what works, for whom and in what circumstances with regard to high-performing interorganisational collaborations. Results A realist review and synthesis identified key mechanisms, such as trust, faith, confidence and risk tolerance, within the functioning of effective interorganisational collaborations. A stakeholder analysis refined this understanding and, in addition, developed a new programme theory of collaborative performance, with mechanisms related to cultural efficacy, organisational efficiency and technological effectiveness. A series of translatable tools, including a diagnostic survey and a collaboration maturity index, were also developed. Limitations The breadth of interorganisational collaboration arrangements included made it difficult to make specific recommendations for individual interorganisational collaboration types. The stakeholder analysis focused exclusively on England, UK, where the COVID-19 pandemic posed challenges for fieldwork. Conclusions Implementing successful interorganisational collaborations is a difficult, complex task that requires significant time, resource and energy to achieve the collaborative functioning that generates performance improvements. A delicate balance of building trust, instilling faith and maintaining confidence is required for high-performing interorganisational collaborations to flourish. Future work Future research should further refine our theory by incorporating other workforce and user perspectives. Research into digital platforms for interorganisational collaborations and outcome measurement are advocated, along with place-based and cross-sectoral partnerships, as well as regulatory models for overseeing interorganisational collaborations. Study registration The study is registered as PROSPERO CRD42019149009. Funding This project was funded by the National Institute for Health and Care Research (NIHR) Health and Social Care Delivery Research programme and will be published in full in Health and Social Care Delivery Research; Vol. 11, No. 6. See the NIHR Journals Library website for further project information. Plain language summary What was the question? How can the collaboration between health-care providers be improved? What did we do? There are continuing concerns about poor patient care across the NHS. One of the ways in which governments have tried to solve these issues is by getting services to work together, rather than separately, to solve any problems. The aim of our review is to learn about how, why and when different approaches to working together – which we call interorganisational collaboration – can be used to improve the performance of NHS providers. We reviewed published evidence and carried out interviews with NHS staff. We also carried out interviews and a focus group with patient and public representatives. What did we find? Our review finds that interorganisational collaborations can work well when a series of elements are in place, which includes the need to build trust between everyone involved. Having a belief in the collaboration is also needed to help inspire others to get involved. To try and reduce possible problems, setting priorities and having clear methods to show how improvements can be achieved are important, as well as having an agreed contract in place to ensure that any conflicts are resolved. If done well, collaboration can improve resource allocation, coordination, communication and shared learning about best practice. What does this mean? Our review provides valuable evidence of how different approaches to interorganisational collaboration can be used by NHS providers to work together to improve services in different situations. Our review provides different options for organisations to reflect on how well they are collaborating, which includes the involvement of key stakeholders, such as patients, the public and communities. Scientific summary Background Improving the collaboration and integration of services has become a mantra for health-care systems. Interorganisational collaborations (IOCs), such as alliances, groups, associations, networks and mergers, have been closely linked to policy contexts where governments have promoted collaboration as a solution for meeting the innovation, coordination, efficiency and quality challenges currently being faced. A variety of factors have been attributed to achieving success within such initiatives, including the importance of organisational capacity, having a shared vision, building trust and collaborative leadership. However, realising the advantages of collaboration is far from straightforward, with notable barriers including the influence of historical events, competitive behaviour, the regulatory environment and a lack of organisational resources. Despite the burgeoning evidence base and increased policy emphasis on collaborative working, notable gaps in knowledge persist. As a result, our understanding of the mechanisms and processes for spreading and sustaining evidence about how IOC relationships work in practice is limited. Many questions remain about how interorganisational arrangements work, for whom and in what circumstances. Given the complexities of collaborative arrangements, contributions identify how ‘theories of change’ approaches provide a way to assess how collaboration synergies are shaped by contexts, behaviours and structures. Realist approaches to the study of IOCs are advocated; however, applications within health-care settings have, hitherto, remained an underdeveloped area. Objectives The research has the following inter-related objectives: •To explore the main strands of the literature about IOC and to identify the main theoretical and conceptual frameworks that can be used to shed light on the conditions and antecedents for effective partnering across sectors and stakeholders •To assess the empirical evidence with regard to how different interorganisational practices may (or may not) lead to improved performance and outcomes •To understand and learn from NHS evidence users and other stakeholders about how and where IOC can best be used as a mechanism to support turnaround processes •To develop a typology of IOC that considers different types and scales of collaborative ventures that are appropriate for particular NHS provider contexts •To generate evidence-informed practical guidance for NHS providers, policy-makers and others with responsibility for implementing and assessing IOC arrangements in the NHS. Methods A realist methodology is employed to provide useful intelligence regarding how, why and in what circumstances different approaches to IOC can improve the performance of NHS provider organisations. Data sources Given the large, multifaceted and complex nature of IOCs, an ‘initial rough theory’ was developed by combining a review of grey and narrative literature, along with systematic reviews of evidence, to capture key definitions, typologies, ingredients and outcomes. Subsequent systematic searches were conducted to gather evidence about how IOC works and the contextual factors shaping a range of entities, such as alliances, buddying, mergers, acquisitions and hospital groups. Searches were run between 7 October 2020 and 4 March 2021 on databases, including the Healthcare Management Information Consortium, MEDLINE, Social Policy and Practice and PsycINFO, and on Google Scholar (Google Inc., Mountain View, CA, USA). Reference-scanning and citation-tracking were also employed. We conducted a realist evaluation to further test our refined programme theory by exploring the experiences of a range of stakeholders, comprising the leaders or architects of IOCs, regulators, policy-makers, professional bodies, front-line staff and patient representatives. Inclusion criteria The realist review used the following inclusion criteria for the title and abstract stage: ‘the paper clearly relates to collaborations between one or more public sector organisations on either a structural or individual level’ and ‘the paper is a case study, evaluation, opinion, or review’. Full-text screening also included ‘propositions about the success or failure of collaboration in the public sector, mechanisms underlying how collaboration works or include information about “entry points” (i.e. drivers of collaboration)’. For the refinement stage, we included papers that (1) were case studies or evaluations (defined as reporting results of arrangements using descriptive methods), (2) report on an IOC between health care-providing organisations and (3) were in English (because of resource limitations of the study). A purposive sampling strategy identified participants through contacts via our Study Advisory Group and from direct contact with potential individuals and organisations identified through scoping work. Participants were chosen based on their likelihood of being able to provide rich information about various aspects of IOCs from being engaged in formulating, influencing, implementing or experiencing such arrangements. The final sample comprised 37 interviews and one focus group with 8 patient and public representatives. Data extraction Selected studies were subject to rigour and relevance checks in accordance with realist synthesis methodology. The screening for rigour was ongoing and primarily involved including context–mechanism–outcome configurations (CMOCs) only when supported by (1) clear data in included studies and (2) multiple sources. For theoretical sources of evidence, only theories that had seen significant use in the literature since publication were used in the building of our middle-range theory (MRT) and CMOCs. No studies or extracts were excluded on the basis of trustworthiness. Analysis of the realist evaluation interview data was performed in NVivo 12 software (QSR International, Warrington, UK) by one coder (JAA), with the coding logic independently verified by a second coder (RM). Coding was performed retroductively, combining inductive and deductive logic. Data synthesis Theory gleaning synthesised document evidence according to whether or not the evidence shed light on entry points into collaboration, contextual factors, mechanisms or other elements relating to collaborations that helped elucidate the underlying ideas and assumptions regarding how collaboration was intended to work. Theory refinement aimed to test the identified CMOCs against case studies, and improve our programme theory. The realist interviews and focus group provided further refinement to the CMOCs relating to collaborative functioning, as well as to glean novel CMOCs relating to collaborative performance. Interview data were retroductively analysed in NVivo 12. Results The realist synthesis incorporated reviews, MRTs, case studies and organisational evaluation literature. A total of 86 papers produced a refined realist theory that surfaced the inter-related roles of trust and risk tolerance, faith, task complexity, interpersonal communication, cultural integration, perception of progress, etc., and how these roles causally interact to drive collaborative behaviour. The results demonstrate that in mandated or highly integrative collaborations the locus may be shifted from trust towards contractual obligation and a sense of confidence that the partner will act collaboratively. These chains of CMOCs were situated within a ‘causal web’ to depict how distant contextual items and their mechanisms work to affect the outcomes underpinning organisational performance. Stakeholder interviews supported the CMOCs identified within the review. In doing so, stakeholders further articulated how building and sustaining trust was connected to the leadership skills and behaviours of authenticity, empathy, visibility and generosity. A commitment to place-based approaches also featured, along with the importance of stakeholder engagement, data analysis and project management. The findings also show how a delicate balance is required for building faith, where energising leadership is tempered by the stark capacity issues facing current NHS contexts. The importance of priority-setting and data analytics features in building faith; however, increasing task complexity can reduce faith, particularly when working across boundaries. Interviews also stress the need for confidence and memoranda of understanding in particular types of IOC. The results present the first comprehensive realist evaluation of how well-functioning IOCs can drive performance improvements. Drawing on the domains of collaborative performance, the interviews and focus group identify how cultural efficacy mechanisms prove to be particularly important in driving improved communication, better coordination, shared improvement strategies and reputation management. Organisational efficiency mechanisms highlight the causal links between collaboration and improving financial and workforce resource allocation, as well as better coordination to increase responsiveness and reduce duplication. Technological effectiveness sheds light on the benefits collaboration can bring for research and development and working across clinical pathways. Conclusions Through analysis of theoretical, empirical and stakeholder evidence, the research presents a synthesis of MRTs and CMOCs to better understand how, why and in what circumstances IOCs are effective for NHS providers. Our study finds that the core mechanisms of collaborative functioning comprise the development of trust, faith and confidence. The extent to which task success or failure is achieved is mediated by supporting mechanisms related to capacity, legitimacy, complexity, conflict and risk tolerance. Performance improvement from collaboration can be achieved when mechanisms underlying organisational efficiency (e.g. reduced duplication of effort), cultural efficacy (e.g. enhanced coordination in local health system) and technological effectiveness (e.g. sharing clinical expertise) are activated. The findings conclude that performance improvements occur in a context of collaborative functioning, which, in turn, drive improvements in long-term outcomes, including care quality, safety, efficiency and experience. The findings provide a range of practical steps that organisations can take in the development of IOCs, including the development of diagnostic surveys for assessing collaboration to help organisations assess their readiness for collaboration, as well as for diagnosing collaborations that are already progressing. A pilot of a survey with a mental health provider collaborative shows promising signs for its utility in providing a valuable means for stimulating discussion with regard to the perceived readiness for collaboration. A maturity index for collaboration was also presented to assess levels of collaboration and encourage critical discussion and reflection. A range of theoretical, empirical and policy implications arise from this research. Specific issues that warrant further consideration and investigation are as follows: •Where much of the analysis of IOCs has captured the experiences, processes and outcomes from the perspective of those leading programmes and initiatives, further research is needed to gather workforce perspectives regarding how new processes are understood and operationalised, and how IOCs shape patient and user interactions. •Research is required to better grasp how IOCs can engage and improve population health by further involving patients and communities through drawing on principles of co-design and co-production. •The COVID-19 pandemic has been a driver for activity using digital platforms for communication, yet further research is needed to better understand and nurture ‘interpersonal communication’ across digital platforms and to better understand the role of digital technology in facilitating collaboration. •Further research is needed to investigate the applicability and adaptability of a number of the elements raised by this project, such as the roles of faith, trust and other mechanisms within the formation and maintenance of place-based partnerships. Learning from other national contexts could facilitate such efforts, with further comparative studies of IOCs from across the United Kingdom and beyond. •A review of regulatory models and perspectives for overseeing collaborative ventures is required, learning from other sectors and health-care contexts, where appropriate. •Building on our realist theory of collaborative performance, further research is needed to disentangle the motivators and drivers from the ‘outcomes’ associated with IOCs. Such analysis can support the current policy landscape, placing greater emphasis on measuring the outcomes and social value generated from collaborative working. •Further research is required to articulate the cross-sectoral relationships within the current IOC policy agenda. The place and positioning of social care and third sector requires further development. Furthermore, greater attention to the role of public/private partnerships, and the private sector more specifically, within collaboration and integration agendas is needed. Study registration The study is registered as PROSPERO CRD42019149009. Funding This project was funded by the National Institute for Health and Care Research (NIHR) Health and Social Care Delivery Research programme and will be published in full in Health and Social Care Delivery Research; Vol. 11, No. 6. See the NIHR Journals Library website for further project information.
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- 2023
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5. Collaboration over competition? Regulatory reform and inter-organisational relations in the NHS amidst the COVID-19 pandemic: a qualitative study
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Aunger, Justin Avery, Millar, Ross, Rafferty, Anne Marie, and Mannion, Russell
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- 2022
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6. The first step of a realist investigation: Building an initial realist theory of on-the-day surgery cancellations.
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Samarasinghe, Buddhika S.W., primary, Millar, Ross, additional, and Exworthy, Mark, additional
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- 2023
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7. Afterpulsing in Ge-on-Si Single-Photon Avalanche Diodes
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Yi, Xin, primary, Greener, Zoë, additional, Fleming, Fiona, additional, Kirdoda, Jarosław, additional, Dumas, Derek C. S., additional, Saalbach, Lisa, additional, Muir, Dave A. S., additional, Ferre-Llin, Lourdes, additional, Millar, Ross W., additional, Paul, Douglas J., additional, and Buller, Gerald S., additional
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- 2023
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8. Modelling lifecycles of inter-organizational collaborations in healthcare: a systematic review and best-fit framework synthesis
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Aunger, Justin Avery, primary, Millar, Ross, additional, and Greenhalgh, Joanne, additional
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- 2023
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9. Simulation and design optimization of germanium-on-silicon single photon avalanche diodes
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Smith, Charles, primary, Kirdoda, Jaroslaw, additional, Dumas, Derek, additional, Yi, Xin, additional, Fleming, Fiona, additional, Coughlan, Conor, additional, Mirza, Muhammad, additional, Saalbach, Lisa, additional, Buller, Gerald, additional, Paul, Douglas, additional, and Millar, Ross, additional
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- 2023
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10. Variation of sidewall passivation on sub-μm selectively grown Ge-on-Si devices towards single photon avalanche detectors
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Coughlan, Conor, primary, Mirza, Muhammad M. A., additional, Kirdoda, Jaroslaw, additional, Dumas, Derek, additional, Smith, Charles, additional, McCarthy, Charlie, additional, Mowbray, Hannah, additional, Watson, Scott, additional, Millar, Ross, additional, and Paul, Douglas J., additional
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- 2023
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11. Web-based Signing of English Text
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Dai, Zexi, primary, Manoharan, Sathiamoorthy, additional, Millar, Ross, additional, and Ye, Xinfeng, additional
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- 2022
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12. Design, fabrication and performance of planar Ge-on-Si single-photon avalanche diode at 1550 nm
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Yi, Xin, primary, Fleming, Fiona, additional, Kirdoda, Jaroslaw, additional, Millar, Ross W., additional, Benakaprasad, Bhavana, additional, Coughlan, Conor, additional, Smith, Charles, additional, Mirza, Muhammad M. A., additional, Watson, Scott, additional, Saalbach, Lisa, additional, Paul, Douglas J., additional, and Buller, Gerald S., additional
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- 2022
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13. Realising population health: how can collaboration between NHS providers meet the challenges ahead?
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Millar, Ross, primary, Williams, Charlotte, additional, Morgan, Sarah Louise, additional, and Agble, Ron, additional
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- 2022
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14. Communicating research evidence to boards in health and care organisations: A scoping study
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Parkinson, Sarah, Bousfield, Jennifer, Millar, Ross, George, Jenny, and Marjanovic, Sonja
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Research Methods - Abstract
Boards in health and care organisations in England play a key role in the governance, strategy, direction and culture of an organisation. It is therefore important to ensure that board decisions are informed by the best available evidence from a range of sources, including service evaluations, organisational performance data, research and evidence-based guidelines. However, there is a scarcity of evidence about how boards use research evidence, defined as evidence stemming from generalisable empirical research, to carry out their roles. THIS Institute commissioned RAND Europe and the Health Services Management Centre (HSMC) at the University of Birmingham to conduct a scoping study on how health and care boards use research evidence. The focus was on NHS Trust boards and the boards of Sustainability and Transformation Partnerships (STPs) or Integrated Care Systems (ICSs). The principal data collection method was qualitative interviews with diverse members of health and care boards to obtain insights into the perceptions and experiences of board members in a range of roles and circumstances. The findings are predominantly based on evidence from 17 interviews. Given the importance of the COVID-19 pandemic at the time of this research, we were also asked to consider whether and how research evidence was used by boards in shaping their response to COVID-19. We focused on two areas specifically: (i) personal protective equipment (PPE) and (ii) the use of remote consultations and remote patient monitoring.
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- 2022
15. How, when, and why do inter-organisational collaborations in healthcare work? A realist evaluation
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Aunger, Justin Avery, primary, Millar, Ross, additional, Rafferty, Anne Marie, additional, Mannion, Russell, additional, Greenhalgh, Joanne, additional, Faulks, Deborah, additional, and McLeod, Hugh, additional
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- 2022
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16. Determinants Influencing the Adoption of Internet Health Care Technology Among Chinese Health Care Professionals: Extension of the Value-Based Adoption Model With Burnout Theory (Preprint)
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Bian, Dongsheng, primary, Xiao, Yuyin, additional, Song, Keyu, additional, Dong, Minye, additional, Li, Li, additional, Millar, Ross, additional, Shi, Chenshu, additional, and Li, Guohong, additional
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- 2022
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17. Determinants influencing the adoption of Internet Healthcare Technology among Chinese healthcare professionals: an extension of the Value-based Adoption Model (VAM) with Burnout theory (Preprint)
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Bian, Dongsheng, primary, Xiao, Yuyin, additional, Song, Keyu, additional, Dong, Minye, additional, Li, Li, additional, Millar, Ross, additional, Shi, Chenshu, additional, and Li, Guohong, additional
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- 2022
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18. Additional file 1 of Collaboration over competition? Regulatory reform and inter-organisational relations in the NHS amidst the COVID-19 pandemic: a qualitative study
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Aunger, Justin Avery, Millar, Ross, Rafferty, Anne Marie, and Mannion, Russell
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Data_FILES - Abstract
Additional file 1.
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- 2022
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19. Determinants Influencing the Adoption of Internet Health Care Technology Among Chinese Health Care Professionals: Extension of the Value-Based Adoption Model With Burnout Theory.
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Bian, Dongsheng, Xiao, Yuyin, Song, Keyu, Dong, Minye, Li, Li, Millar, Ross, Shi, Chenshu, and Li, Guohong
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MEDICAL personnel ,MEDICAL technology ,COVID-19 pandemic ,STRUCTURAL equation modeling ,MEDICAL care - Abstract
Background: The global COVID-19 pandemic has been widely regarded as a catalyst for adopting internet health care technology (IHT) in China. IHT consists of new health care technologies that are shaping health services and medical consultations. Health care professionals play a substantial role in the adoption of any IHT, but the consequences of doing so can often be challenging, particularly when employee burnout is prevalent. Few studies have explored whether employee burnout influences the adoption intention of IHT in health care professionals. Objective: This study aims to explain the determinants influencing the adoption of IHT from the perspective of health care professionals. To do so, the study extends the value-based adoption model (VAM) with consideration for employee burnout as a determining factor. Methods: A cross-sectional web-based survey using a sample of 12,031 health care professionals selected through multistage cluster sampling from 3 provinces in mainland China was conducted. The hypotheses of our research model were developed based on the VAM and employee burnout theory. Structural equation modeling was then used to test the research hypotheses. Results: The results indicate that perceived usefulness, perceived enjoyment, and perceived complexity positively correlate with perceived value (β=.131, P=.01; β=.638, P<.001; β=.198, P<.001, respectively). Perceived value had a positive direct effect on adoption intention (β=.725, P<.001), perceived risk negatively correlated with perceived value (β=−.083, P<.001), and perceived value negatively correlated with employee burnout (β=−.308, P<.001). In addition, employee burnout was negatively related to adoption intention (β=−.170, P<.001) and mediated the relationship between perceived value and adoption intention (β=.052, P<.001). Conclusions: Perceived value, perceived enjoyment, and employee burnout were the most important determinants of IHT adoption intention by health care professionals. In addition, while employee burnout was negatively related to adoption intention, perceived value inhibited employee burnout. Therefore, this study finds that it is necessary to develop strategies to improve the perceived value and reduce employee burnout, which will benefit the promotion of the adoption intention of IHT in health care professionals. This study supports the use of the VAM and employee burnout in explaining health care professionals' adoption intention regarding IHT. [ABSTRACT FROM AUTHOR]
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- 2023
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20. Variation of sidewall passivation on sub-μm selectively grown Ge-on-Si single photon avalanche detectors
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Jiang, Shibin, Digonnet, Michel J. F., Coughlan, Conor, Mirza, Muhammad M. A., Kirdoda, Jaroslaw, Dumas, Derek, Smith, Charles, McCarthy, Charlie, Mowbray, Hannah, Watson, Scott, Millar, Ross, and Paul, Douglas J.
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- 2023
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21. Simulation and design optimization of germanium-on-silicon single photon avalanche diodes
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Reed, Graham T., Knights, Andrew P., Smith, Charles, Kirdoda, Jaroslaw, Dumas, Derek C. S., Coughlan, Conor, McCarthy, Charlie, Mowbray, Hannah, Mirza, Muhammad, Fleming, Fiona, Yi, Xin, Saalbach, Lisa, Buller, Gerald S., Paul, Douglas J., and Millar, Ross W.
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- 2023
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22. (Invited) Pseudo-Planar Ge-on-Si Avalanche Photodiodes in Geiger and Linear Modes for Short-Wave Infrared Detection.
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Kirdoda, Jaroslaw, Mirza, Muhammad, Smith, Charlie, Dumas, Derek, Coughlan, Conor, McCarthy, Charlie, Mowbray, Hannah, Fleming, Fiona, Yi, Xin, Saalbach, Lisa, Muir, Dave, Modak, Mrudul, Jin, Xiao, Tian, Qingyu, David, John, Buller, Gerald, Paul, Douglas, and Millar, Ross
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- 2024
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23. The case of the disappearing whistleblower: an analysis of National Health Service inquiries.
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Powell, Martin, Blenkinsopp, John, Davies, Huw, Mannion, Russell, Millar, Ross, McHale, Jean, and Snowden, Nicholas
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WHISTLEBLOWING ,LEGAL remedies - Abstract
Copyright of Public Money & Management is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
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24. Ge-on-Si single photon avalanche diode performance enhancement with photonic crystal nano-hole arrays
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Witzigmann, Bernd, Osiński, Marek, Arakawa, Yasuhiko, McCarthy, Charlie, Smith, Charlie, Mowbray, Hannah, Paul, Douglas J., and Millar, Ross W.
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- 2024
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25. Decoupling the dark count rate contributions in Ge-on-Si single photon avalanche diodes
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Razeghi, Manijeh, Khodaparast, Giti A., Vitiello, Miriam S., Dumas, Derek C. S., Coughlan, Conor, Smith, Charlie, Mirza, Muhammad, Kirdoda, Jaroslaw, Fleming, Fiona, McCarthy, Charlie, Mowbray, Hannah, Yi, Xin, Saalbach, Lisa, Buller, Gerald S., Paul, Douglas J., and Millar, Ross W.
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- 2024
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26. Simulation and design optimization of germanium-on-silicon single photon avalanche diodes.
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Smith, Charles, Kirdoda, Jaroslaw, Dumas, Derek C. S., Coughlan, Conor, McCarthy, Charlie, Mowbray, Hannah, Mirza, Muhammad, Fleming, Fiona, Yi, Xin, Saalbach, Lisa, Buller, Gerald S., Paul, Douglas J., and Millar, Ross W.
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- 2023
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27. Variation of sidewall passivation on sub-μm selectively grown Ge-on-Si single photon avalanche detectors.
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Coughlan, Conor, Mirza, Muhammad M. A., Kirdoda, Jaroslaw, Dumas, Derek, Smith, Charles, McCarthy, Charlie, Mowbray, Hannah, Watson, Scott, Millar, Ross, and Paul, Douglas J.
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- 2023
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28. Bridging the divide? Why the integration of standardisation and individualisation of care remains paramount during turbulent times.
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Samarasinghe BSW, Millar R, and Exworthy M
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Competing Interests: Competing interests: None declared.
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- 2024
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29. Simulation of photonic crystal enhanced Ge-on-Si single photon avalanche diodes.
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Smith CK, McCarthy C, and Millar RW
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Simulations of single photon avalanche diodes (SPADs) based on the Ge-on-Si material platform are presented, highlighting the potential performance enhancement achievable with nano-hole array photonic crystal structures. Such structures can be used to enhance photon absorption and therefore increase single photon detection efficiencies (SPDE). However, there is yet to be a study of these structures in application to Ge-on-Si SPADs to determine if the optical enhancements can be realized as SPDE or to evaluate the change in dark count rate due to the nano-holes that form the photonic crystal. This work establishes an optimization and analysis platform for investigating photonic crystal structures on SPAD devices. Both a direct Ge etch method, and an etched amorphous Si design are compared to a reference device with an optimized anti-reflection coating. Finite difference time domain simulations were used to optimize the photonic crystal parameters for these structures, finding a potential absorption of up to 37.09 % at wavelengths of 1550 nm for a 1 µm absorption layer, compared to 11.33 % for the reference device. Subsequently, TCAD simulations and custom code were used to calculate the effective enhancement to SPAD performance metrics, as a function of material and passivation quality, showing up to 2.41x higher SPDE and 2.57x better noise-equivalent power is achievable provided etched surfaces are sufficiently well passivated.
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- 2024
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30. Surface-normal illuminated pseudo-planar Ge-on-Si avalanche photodiodes with high gain and low noise.
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Fleming F, Yi X, Mirza MMA, Jin X, Kirdoda J, Dumas DCS, Saalbach L, Modak M, Muir DAS, Smith C, Coughlan C, Tian Q, Millar RW, David JPR, Paul DJ, and Buller GS
- Abstract
Germanium-on-Silicon (Ge-on-Si) avalanche photodiodes (APDs) are of considerable interest as low intensity light detectors for emerging applications. The Ge absorption layer detects light at wavelengths up to ≈ 1600 nm with the Si acting as an avalanche medium, providing high gain with low excess avalanche noise. Such APDs are typically used in waveguide configurations as growing a sufficiently thick Ge absorbing layer is challenging. Here, we report on a new vertically illuminated pseudo-planar Ge-on-Si APD design utilizing a 2 µm thick Ge absorber and a 1.4 µm thick Si multiplication region. At a wavelength of 1550 nm, 50 µm diameter devices show a responsivity of 0.41 A/W at unity gain, a maximum avalanche gain of 101 and an excess noise factor of 3.1 at a gain of 20. This excess noise factor represents a record low noise for all configurations of Ge-on-Si APDs. These APDs can be inexpensively manufactured and have potential integration in silicon photonic platforms allowing use in a variety of applications requiring high-sensitivity detectors at wavelengths around 1550 nm.
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- 2024
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31. Communicating research evidence to boards in health and care organisations: A scoping study.
- Author
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Parkinson S, Bousfield J, Millar R, George J, and Marjanovic S
- Abstract
Boards in health and care organisations in England play a key role in the governance, strategy, direction and culture of an organisation. It is therefore important to ensure that board decisions are informed by the best available evidence from a range of sources, including service evaluations, organisational performance data, research and evidence-based guidelines. However, there is a scarcity of evidence about how boards use research evidence, defined as evidence stemming from generalisable empirical research, to carry out their roles. THIS Institute commissioned RAND Europe and the Health Services Management Centre (HSMC) at the University of Birmingham to conduct a scoping study on how health and care boards use research evidence. The focus was on NHS Trust boards and the boards of Sustainability and Transformation Partnerships (STPs) or Integrated Care Systems (ICSs). The principal data collection method was qualitative interviews with diverse members of health and care boards to obtain insights into the perceptions and experiences of board members in a range of roles and circumstances. The findings are predominantly based on evidence from 17 interviews. Given the importance of the COVID-19 pandemic at the time of this research, we were also asked to consider whether and how research evidence was used by boards in shaping their response to COVID-19. We focused on two areas specifically: (i) personal protective equipment (PPE) and (ii) the use of remote consultations and remote patient monitoring., (Copyright © 2022 RAND Corporation.)
- Published
- 2022
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