407 research outputs found

    A Review of Insulin-Dosing Formulas for Continuous Subcutaneous Insulin Infusion (CSII) for Adults with Type 1 Diabetes

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    Dosing guidelines for patients with type 1 diabetes using continuous subcutaneous insulin infusion (CSII), which are historically based on clinical experience and retrospective studies of patients consuming an American diet, recommend that basal insulin should represent approximately 50 % of the total daily dose (TDD). Recent prospective studies in the USA and Japan conclude that the more appropriate proportion is closer to 30–40 % of TDD. In addition, currently used formulas for calculating the carbohydrate-to-insulin ratio (CIR) and correction factor (CF) may lead to underdosing of bolus insulin by as much as 12.8–50 % for a hypothetical patient. The discrepancies between traditional formulas and data from newer studies can be accounted for by the more rigorous design of the newer studies (e.g., prospective design, controlled diets, meal omission, and frequent glucose monitoring). International differences in diet composition may also be important to consider when developing dosing recommendations for CSII

    Commonsense Metaphysics and Lexical Semantics

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    In the TACITUS project for using commonsense knowledge in the understanding of texts about mechanical devices and their failures, we have been developing various commonsense theories that are needed to mediate between the way we talk about the behavior of such devices and causal models of their operation. Of central importance in this effort is the axiomatization of what might be called commonsense metaphysics. This includes a number of areas that figure in virtually every domain of discourse, such as granularity, scales, time, space, material, physical objects, shape, causality, functionality, and force. Our effort has been to construct core theories of each of these areas, and then to define, or at least characterize, a large number of lexical items in terms provided by the core theories. In this paper we discuss our methodological principles and describe the key ideas in the various domains we are investigating

    Advances in restoration ecology: rising to the challenges of the coming decades

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    Simultaneous environmental changes challenge biodiversity persistence and human wellbeing. The science and practice of restoration ecology, in collaboration with other disciplines, can contribute to overcoming these challenges. This endeavor requires a solid conceptual foundation based in empirical research which confronts, tests and influences theoretical developments. We review conceptual developments in restoration ecology over the last 30 years. We frame our review in the context of changing restoration goals which reflect increased societal awareness of the scale of environmental degradation and the recognition that inter-disciplinary approaches are needed to tackle environmental problems. Restoration ecology now encompasses facilitative interactions and network dynamics, trophic cascades, and above- and below ground linkages. It operates in a non-equilibrium, alternative states framework, at the landscape scale, and in response to changing environmental, economic and social conditions. Progress has been marked by conceptual advances in the fields of trait-environment relationships, community assembly, and understanding the links between biodiversity and ecosystem functioning. Conceptual and practical advances have been enhanced by applying evolving technologies, including treatments to increase seed germination and overcome recruitment bottlenecks, high throughput DNA sequencing to elucidate soil community structure and function, and advances in satellite technology and GPS tracking to monitor habitat use. The synthesis of these technologies with systematic reviews of context dependencies in restoration success, model based analyses and consideration of complex socio-ecological systems will allow generalizations to inform evidence based interventions. Ongoing challenges include setting realistic, socially acceptable goals for restoration under changing environmental conditions, and prioritizing actions in an increasingly space-competitive world. Ethical questions also surround the use of genetically modified material, translocations, taxon substitutions, and de-extinction, in restoration ecology. Addressing these issues, as the Ecological Society of America looks to its next century, will require current and future generations of researchers and practitioners, including economists, engineers, philosophers, landscape architects, social scientists and restoration ecologists, to work together with communities and governments to rise to the environmental challenges of the coming decades

    Curriculum policy reform in an era of technical accountability: 'fixing' curriculum, teachers and students in English schools

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    Drawing on a Levinasian ethical perspective, the argument driving this paper is that the technical accountability movement currently dominating the educational system in England is less than adequate because it overlooks educators’ responsibility for ethical relations in responding to difference in respect of the other. Curriculum policy makes a significant contribution to the technical accountability culture through complicity in performativity, high-stakes testing and datafication, at the same time as constituting student and teacher subjectivities. I present two different conceptualizations of subjectivity and education, before engaging these in the analysis of data arising from an empirical study which investigated teachers’ and stakeholders’ experiences of curriculum policy reform in ‘disadvantaged’ English schools. The study’s findings demonstrate how a prescribed programme of technical curriculum regulation attempts to ‘fix’ or mend educational problems by ‘fixing’ or prescribing educational solutions. This not only denies ethical professional relations between students, teachers and parents, but also deflects responsibility for educational success from government to teachers and hastens the move from public to private educational provision. Complying with prescribed curriculum policy requirements shifts attention from broad philosophical and ethical questions about educational purpose as well as conferring a violence by assuming control over student and teacher subjectivities

    Generalizability of Blood Pressure Lowering Trials to Older Patients: Cross‐Sectional Analysis

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    BACKGROUND/OBJECTIVES: Randomized controlled trials are used to inform clinical guidelines on the management of hypertension in older adults, but it is unclear to what extent these trials represent the general population attending routine clinical practice. This study aimed to define the proportion and characteristics of patients eligible for hypertension trials conducted in older people. DESIGN: Cross‐sectional study. SETTING: A total of 24 general practices in England. PARTICIPANTS: Anonymized electronic health record data from all individuals aged 80 and older. MEASUREMENTS: Descriptive statistics were used to define the proportion and characteristics of patients eligible for two previous medication intensification trials (HYVET, SPRINT) and one medication reduction trial (OPTiMISE). A logistic regression model was constructed to estimate predictors of eligibility for each trial. RESULTS: Of 15,376 patients identified, 268 (1.7%; 95% confidence interval [CI] = 1.5–2.0%), 5,290 (34.4%; 95%CI = 33.7–35.2%), and 3,940 (25.6%; 95%CI = 24.9–26.3%) were eligible for the HYVET, SPRINT, and OPTiMISE trials, respectively. Between 5.6% and 30.7% of exclusions from each trial were due to eligibility criteria excluding those with high or uncontrolled blood pressure. Frailty (odds ratio [OR] = .44; 95%CI = .36–.54 [OPTiMISE]), cardiovascular polypharmacy (OR = .61; 95%CI = .55–.68 [SPRINT]) and multimorbidity (OR = .72; 95%CI = .64–.82 [SPRINT]) were associated with a lower likelihood of being eligible for one or more of the trials. CONCLUSION: A possible unintended consequence of blood pressure criteria used by trials attempting to answer different primary questions is that for many older patients, no trial evidence exists to inform treatment decisions in routine practice. Caution should be exercised when applying results from existing trials to patients with frailty or multimorbidity

    Staff perceptions of borderline personality disorder and recovery:A Q-sort method approach

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    OBJECTIVES: This study was the first to explore how staff that work with people diagnosed with borderline personality disorder (BPD) perceive recovery in this client group. These views are important because of the crucial role that staff play in the care of people with BPD, and the challenges that staff experience with these clients.DESIGN: A Q methodology design was used, containing 58 statements about recovery.METHODS: Twenty-nine mental health staff sorted recovery statements according to perceived importance to recovery in BPD.RESULTS: There were two different viewpoints about recovery in BPD. A medically oriented group viewed coping with symptoms and behaviours specific to BPD as being most important to recovery, whereas participants who were more well-being oriented viewed achieving overall well-being that was universally valued regardless of diagnosis as more important. Both groups reported that engaging in socially valued activities such as work and education was not an important aspect of recovery and that people with BPD could be considered to have recovered despite continued impairments in everyday functioning.CONCLUSIONS: Staff perceptions of recovery in BPD can differ, which poses risks for consistent team working, a particularly important issue in this client group due to the relational difficulties associated with the diagnosis. Multidisciplinary teams working with people diagnosed with BPD therefore need to find a forum to promote a shared understanding of each patient's needs and support plans. We advocate that team formulation is a promising approach to achieve more consistent ways of working within teams.PRACTITIONER POINTS: Findings Multidisciplinary teams working with people with borderline personality disorder should use team formulations to create a shared understanding of individual patient's needs and goals for recovery, so they can deliver a consistent approach to care. Recovery questionnaires should be used to develop an understanding of a patient's individual recovery goals. Limitations Opportunity sampling was utilized in recruitment, and the sample was not representative of the general population of staff working with borderline personality disorder. Although views from a wide range of professions were sampled in this research, the views of psychiatrists were not represented.</p

    COMAP Early Science: VIII. A Joint Stacking Analysis with eBOSS Quasars

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    We present a new upper limit on the cosmic molecular gas density at z=2.4−3.4z=2.4-3.4 obtained using the first year of observations from the CO Mapping Array Project (COMAP). COMAP data cubes are stacked on the 3D positions of 282 quasars selected from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) catalog, yielding a 95% upper limit for flux from CO(1-0) line emission of 0.210 Jy km/s. Depending on the assumptions made, this value can be interpreted as either an average CO line luminosity LCOâ€ČL'_\mathrm{CO} of eBOSS quasars of ≀7.30×1010\leq 7.30\times10^{10} K km pc2^2 s−1^{-1}, or an average molecular gas density ρH2\rho_\mathrm{H_2} in regions of the universe containing a quasar of ≀2.02×108\leq 2.02\times10^8 M⊙_\odot cMpc−3^{-3}. The LCOâ€ČL'_\mathrm{CO} upper limit falls among CO line luminosities obtained from individually-targeted quasars in the COMAP redshift range, and the ρH2\rho_\mathrm{H_2} value is comparable to upper limits obtained from other Line Intensity Mapping (LIM) surveys and their joint analyses. Further, we forecast the values obtainable with the COMAP/eBOSS stack after the full 5-year COMAP Pathfinder survey. We predict that a detection is probable with this method, depending on the CO properties of the quasar sample. Based on these achieved sensitivities, we believe that this technique of stacking LIM data on the positions of traditional galaxy or quasar catalogs is extremely promising, both as a technique for investigating large galaxy catalogs efficiently at high redshift and as a technique for bolstering the sensitivity of LIM experiments, even with a fraction of their total expected survey data.Comment: 15 pages, 8 figures. To be submitted to Ap

    COMAP Early Science: VIII. A Joint Stacking Analysis with eBOSS Quasars

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    We present a new upper limit on the cosmic molecular gas density at z = 2.4 − 3.4 obtained using the first year of observations from the CO Mapping Array Project (COMAP). COMAP data cubes are stacked on the 3D positions of 243 quasars selected from the Extended Baryon Oscillation SpectroscopicSurvey (eBOSS) catalog, yielding a 95% upper limit for flux from CO(1-0) line emission of 0.129 Jykm/s. Depending on the balance of the emission between the quasar host and its environment, this value can be interpreted as an average CO line luminosity Lâ€ČCO of eBOSS quasars of ≀ 1.26 × 1011 K km pc2s−1, or an average molecular gas density ρH2 in regions of the universe containing a quasar of ≀ 1.52 × 108 M⊙ cMpc−3. The Lâ€Č CO upper limit falls among CO line luminosities obtained fromindividually-targeted quasars in the COMAP redshift range, and the ρH2 value is comparable to upper limits obtained from other Line Intensity Mapping (LIM) surveys and their joint analyses. Further, we forecast the values obtainable with the COMAP/eBOSS stack after the full 5-year COMAP Pathfinder survey. We predict that a detection is probable with this method, depending on the CO properties of the quasar sample. Based on the achieved sensitivity, we believe that this technique of stacking LIM data on the positions of traditional galaxy or quasar catalogs is extremely promising, both asa technique for investigating large galaxy catalogs efficiently at high redshift and as a technique for bolstering the sensitivity of LIM experiments, even with a fraction of their total expected survey data

    COMAP Early Science: VI. A First Look at the COMAP Galactic Plane Survey

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    We present early results from the COMAP Galactic Plane Survey conducted between June 2019 and April 2021, spanning 20∘<ℓ<40∘20^\circ<\ell<40^\circ in Galactic longitude and |b|<1.\!\!^{\circ}5 in Galactic latitude with an angular resolution of 4.5â€Č4.5^{\prime}. The full survey will span ℓ∌20∘\ell \sim 20^{\circ}- 220∘220^{\circ} and will be the first large-scale radio continuum survey at 3030 GHz with sub-degree resolution. We present initial results from the first part of the survey, including diffuse emission and spectral energy distributions (SEDs) of HII regions and supernova remnants. Using low and high frequency surveys to constrain free-free and thermal dust emission contributions, we find evidence of excess flux density at 30 30\,GHz in six regions that we interpret as anomalous microwave emission. Furthermore we model UCHII contributions using data from the 5 5\,GHz CORNISH catalogue and reject this as the cause of the 30 30\,GHz excess. Six known supernova remnants (SNR) are detected at 30 30\,GHz, and we measure spectral indices consistent with the literature or show evidence of steepening. The flux density of the SNR W44 at 30 30\,GHz is consistent with a power-law extrapolation from lower frequencies with no indication of spectral steepening in contrast with recent results from the Sardinia Radio Telescope. We also extract five hydrogen radio recombination lines to map the warm ionized gas, which can be used to estimate electron temperatures or to constrain continuum free-free emission. The full COMAP Galactic plane survey, to be released in 2023/2024, will be an invaluable resource for Galactic astrophysics.Comment: Paper 6 of 7 in series. 28 pages, 10 figures, submitted to Ap
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