From analogy-making to modelling : the history of analog computing as a modelling technology

Today, modern computers are based on digital technology. However, during the decades after 1940, digital computers were complemented by the separate technology of analog computing. But what was analog computing, what were its merits, and who were its users? This thesis investigates the conceptual and technological history of analog computing. As a concept, analog computing represents the entwinement of a complex pre-history of meanings, including calculation, modelling, continuity and analogy. These themes are not only landmarks of analog's etymology, but also represent the blend of practices, ways of thinking, and social ties that together comprise an 'analog culture'. The first half of this thesis identifies how the history of this technology can be understood in terms of the two parallel themes of calculation and modelling. Structuring the history around these themes demonstrates that technologies associated with modelling have less representation in the historiography. Basing the investigation around modelling applications, the thesis investigates the formation of analog culture. The second half of this thesis applies the themes of modelling and information generation to understand analog use in context. Through looking at examples of analog use in academic research, oil reservoir modelling, aeronautical design, and meteorology, the thesis explores why certain communities used analog and considers the relationship between analog and digital in these contexts. This study demonstrates that analog modelling is an example of information generation rather than information processing. Rather than focusing on the categories of analog and digital, it is argued that future historical scholarship in this field should give greater prominence to the more general theme of modelling

From analogy-making to modelling : the history of analog computing as a modelling technology

Today, modern computers are based on digital technology. However, during the decades after 1940, digital computers were complemented by the separate technology of analog computing. But what was analog computing, what were its merits, and who were its users? This thesis investigates the conceptual and technological history of analog computing. As a concept, analog computing represents the entwinement of a complex pre-history of meanings, including calculation, modelling, continuity and analogy. These themes are not only landmarks of analog's etymology, but also represent the blend of practices, ways of thinking, and social ties that together comprise an `analog culture'. The first half of this thesis identifies how the history of this technology can be understood in terms of the two parallel themes of calculation and modelling. Structuring the history around these themes demonstrates that technologies associated with modelling have less representation in the historiography. Basing the investigation around modelling applications, the thesis investigates the formation of analog culture. The second half of this thesis applies the themes of modelling and information generation to understand analog use in context. Through looking at examples of analog use in academic research, oil reservoir modelling, aeronautical design, and meteorology, the thesis explores why certain communities used analog and considers the relationship between analog and digital in these contexts. This study demonstrates that analog modelling is an example of information generation rather than information processing. Rather than focusing on the categories of analog and digital, it is argued that future historical scholarship in this field should give greater prominence to the more general theme of modelling.EThOS - Electronic Theses Online ServiceUniversity of Warwick. Dept. of Computer Science (DCS)GBUnited Kingdo

Joining the dots: Day to day challenges for practitioners in delivering integrated dementia care

Despite the increasing policy focus on integrated dementia care in the UK, little is known about the opportunities and challenges encountered by practitioners charged with implementing these policies on the ground. We undertook an extensive, mixed‐methods analysis of how a contemporary multidisciplinary dementia pathway in the UK was experienced and negotiated by service providers. Our pragmatic mixed methods design incorporated three types of research interaction with practitioners: (a) Semi‐structured interviews (n = 31) and focus group discussions (n = 4), (b) Practitioner ‘shadowing’ observations (n = 19), and (c) Service attendance and performance metrics reviews (n = 8). Through an abductive analysis of practitioner narratives and practice observations, we evidenced how inter‐practitioner prejudices, restrictive and competitive commissioning frameworks, barriers to effective data sharing and other resource constraints, all challenged integrative dementia care and led to unintended consequences such as practice overlap and failure to identify and respond to people's needs. In order to more successfully realise integrated dementia pathways, we propose innovative commissioning frameworks which purposefully seek to diffuse power imbalances, encourage inter‐provider respect and understanding, and determine clear lines of responsibility

Study protocol: a mixed methods study to assess mental health recovery, shared decision-making and quality of life (Plan4Recovery)

BACKGROUND: Recovery in mental health care is complex, highly individual and can be facilitated by a range of professional and non-professional support. In this study we will examine how recovery from mental health problems is promoted in non-medical settings. We hypothesise a relationship between involvement in decisions about care, social support and recovery and quality of life outcomes. METHODS: We will use standardised validated instruments of involvement in decision-making, social contacts, recovery and quality of life with a random sample of people accessing non-statutory mental health social care services in Wales. We will add to this important information with detailed one to one case study interviews with people, their family members and their support workers. We will use a series of these interviews to examine how people build recovery over time to help us understand more about their involvement in decisions and the social links they build. DISCUSSION: We want to see how being involved in decisions about care and the social links people have are related to recovery and quality of life for people with experience of using mental health support services. We want to understand the different perspectives of the people involved in making recovery possible. We will use this information to guide further studies of particular types of social interventions and their use in helping recovery from mental health problems

A systematic review of strategies to recruit and retain primary care doctors

Background There is a workforce crisis in primary care. Previous research has looked at the reasons underlying recruitment and retention problems, but little research has looked at what works to improve recruitment and retention. The aim of this systematic review is to evaluate interventions and strategies used to recruit and retain primary care doctors internationally. Methods A systematic review was undertaken. MEDLINE, EMBASE, CENTRAL and grey literature were searched from inception to January 2015.Articles assessing interventions aimed at recruiting or retaining doctors in high income countries, applicable to primary care doctors were included. No restrictions on language or year of publication. The first author screened all titles and abstracts and a second author screened 20%. Data extraction was carried out by one author and checked by a second. Meta-analysis was not possible due to heterogeneity. Results 51 studies assessing 42 interventions were retrieved. Interventions were categorised into thirteen groups: financial incentives (n=11), recruiting rural students (n=6), international recruitment (n=4), rural or primary care focused undergraduate placements (n=3), rural or underserved postgraduate training (n=3), well-being or peer support initiatives (n=3), marketing (n=2), mixed interventions (n=5), support for professional development or research (n=5), retainer schemes (n=4), re-entry schemes (n=1), specialised recruiters or case managers (n=2) and delayed partnerships (n=2). Studies were of low methodological quality with no RCTs and only 15 studies with a comparison group. Weak evidence supported the use of postgraduate placements in underserved areas, undergraduate rural placements and recruiting students to medical school from rural areas. There was mixed evidence about financial incentives. A marketing campaign was associated with lower recruitment. Conclusions This is the first systematic review of interventions to improve recruitment and retention of primary care doctors. Although the evidence base for recruiting and care doctors is weak and more high quality research is needed, this review found evidence to support undergraduate and postgraduate placements in underserved areas, and selective recruitment of medical students. Other initiatives covered may have potential to improve recruitment and retention of primary care practitioners, but their effectiveness has not been established

A draft framework for measuring progress towards the development of a national health information infrastructure

BACKGROUND: American public policy makers recently established the goal of providing the majority of Americans with electronic health records by 2014. This will require a National Health Information Infrastructure (NHII) that is far more complete than the one that is currently in its formative stage of development. We describe a conceptual framework to help measure progress toward that goal. DISCUSSION: The NHII comprises a set of clusters, such as Regional Health Information Organizations (RHIOs), which, in turn, are composed of smaller clusters and nodes such as private physician practices, individual hospitals, and large academic medical centers. We assess progress in terms of the availability and use of information and communications technology and the resulting effectiveness of these implementations. These three attributes can be studied in a phased approach because the system must be available before it can be used, and it must be used to have an effect. As the NHII expands, it can become a tool for evaluating itself. SUMMARY: The NHII has the potential to transform health care in America – improving health care quality, reducing health care costs, preventing medical errors, improving administrative efficiencies, reducing paperwork, and increasing access to affordable health care. While the President has set an ambitious goal of assuring that most Americans have electronic health records within the next 10 years, a significant question remains "How will we know if we are making progress toward that goal?" Using the definitions for "nodes" and "clusters" developed in this article along with the resulting measurement framework, we believe that we can begin a discussion that will enable us to define and then begin making the kinds of measurements necessary to answer this important question

Psychometric test of the Team Climate Inventory-short version investigated in Dutch quality improvement teams

Abstract BACKGROUND: Although some studies have used the Team Climate Inventory within teams working in health care settings, none of these included quality improvement teams. The aim of our study is to investigate the psychometric properties of the 14-item version of the Team Climate Inventory in healthcare quality improvement teams participating in a Dutch quality collaborative. METHODS: This study included quality improvement teams participating in the Care for Better improvement program for home care, care for the handicapped and the elderly in the Netherlands between 2006 and 2008. As part of a larger evaluation study 270 written questionnaires from team members were collected at baseline and 139 questionnaires at end measurement. Confirmatory factor analyses, reliability, Pearson correlations and paired samples t-tests were conducted to investigate construct validity, reliability, predictive validity and temporal stability. RESULTS: Confirmatory factor analyses revealed the expected four-factor structure and good fit indices. For the four subscales--vision, participative safety, task orientation and support for innovation--acceptable Cronbach's alpha coefficients and high inter-item correlations were found. The four subscales all proved significant predictors of perceived team effectiveness, with participatory safety being the best predictor. As expected the four subscales were found to be stable over time; i.e. without significant changes between baseline and end measurement. CONCLUSION: The psychometric properties of the Dutch version of the TCI-14 are satisfactory. Together these results show that the TCI-14 is a useful instrument to assess to what extent aspects of team climate influence perceived team effectiveness of quality improvement teams

Ozone and PM(2.5) Exposure and Acute Pulmonary Health Effects: A Study of Hikers in the Great Smoky Mountains National Park

To address the lack of research on the pulmonary health effects of ozone and fine particulate matter (≤ 2.5 μm in aerodynamic diameter; PM(2.5)) on individuals who recreate in the Great Smoky Mountains National Park (USA) and to replicate a study performed at Mt. Washington, New Hampshire (USA), we conducted an observational study of adult (18–82 years of age) day hikers of the Charlies Bunion trail during 71 days of fall 2002 and summer 2003. Volunteer hikers performed pre- and posthike pulmonary function tests (spirometry), and we continuously monitored ambient O(3), PM(2.5), temperature, and relative humidity at the trailhead. Of the 817 hikers who participated, 354 (43%) met inclusion criteria (nonsmokers and no use of bronchodilators within 48 hr) and gave acceptable and reproducible spirometry. For these 354 hikers, we calculated the posthike percentage change in forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV(1)), FVC/FEV(1), peak expiratory flow, and mean flow rate between 25 and 75% of the FVC and regressed each separately against pollutant (O(3) or PM(2.5)) concentration, adjusting for age, sex, hours hiked, smoking status (former vs. never), history of asthma or wheeze symptoms, hike load, reaching the summit, and mean daily temperature. O(3) and PM(2.5) concentrations measured during the study were below the current federal standards, and we found no significant associations of acute changes in pulmonary function with either pollutant. These findings are contrasted with those in the Mt. Washington study to examine the hypothesis that pulmonary health effects are associated with exposure to O(3) and PM(2.5) in healthy adults engaged in moderate exercise

Are parents of children hospitalized with severe community-acquired pneumonia more satisfied with care when physicians allow them to share decisions on the antibiotic route?

AIMS Despite convincing evidence that oral and injected amoxicillin have equal efficacy in children with severe community-acquired pneumonia (CAP), hospitalized children often receive injected antibiotics. To investigate whether shared decision-making (choosing the antibiotic route) influences parental satisfaction. DESIGN, SETTING AND PARTICIPANTS: In a one-year questionnaire-based study, we enrolled consecutive children hospitalized for CAP. At admission, all children's parents received a leaflet on CAP. Parents arriving during the daytime were assigned to a shared group and could choose the antibiotic route, those admitted at other times were assigned to an unshared group for whom physicians chose the antibiotic route. Shared group parents answered anonymous questionnaire investigating why they chose a specific route. Parents in both groups answered another anonymous questionnaire at discharge assessing perceived satisfaction with care. MAIN OUTCOME MEASURE: Parents' satisfaction with perceived medical information as assessed by data from a questionnaire. RESULTS: Of the 95 children enrolled, more children's parents were assigned to the unshared than the shared group (77 vs. 18). Of the 18 children's parents in the shared group, 14 chose the oral antibiotic route mainly to avoid painful injections. Doctors explanations were considered better in the shared than in the unshared group (P = 0.02). DISCUSSION AND CONCLUSIONS: The larger number of children's parents assigned to the unshared group reflects paediatricians' reluctance to offer shared-decision making. Well-informed parents prefer oral antibiotic therapy for children with severe CAP. Allowing parents choose the antibiotic route respects parents' wishes, reduces children's pain and improves satisfaction