292 research outputs found
Inquiry-based leadership:The influence of affective attitude, experienced social pressure and self-efficacy
Purpose The purpose of this paper is to improve the understanding of psychological factors that influence inquiry-based leadership. This study investigates how affective attitude, experienced social pressure, and self-efficacy relate to aspects of inquiry-based school leadership. A school leader’s inquiry habit of mind, data literacy, and the extent to which he or she creates a culture of inquiry in the school are each identified as aspects of inquiry-based leadership. Design/methodology/approach Data were collected from questionnaires completed by a sample of 79 school leaders. Findings A significant relationship was found between self-efficacy regarding inquiry-based leadership and all aspects of inquiry-based leadership. Affective attitude toward inquiry-based leadership was significantly related to creating a culture of inquiry. There was no unique relationship between experienced social pressure and inquiry-based leadership. Practical implications Administrators and educators of school leaders who aim to stimulate inquiry-based school leadership should not only focus on increasing the capacity of school leaders to lead their school in an inquiry-based way, but they should also focus on leaders’ self-efficacy and on fostering leaders’ positive attitude toward inquiry-based school leadership. Administrators and educators can, for example, give positive feedback, emphasize the added value of inquiry-based leadership, encourage working with critical friends, and stimulate collaboration with other leaders. Originality/value This study addresses two gaps in the existing research, by focusing on inquiry-based leadership instead of data use and on psychological factors instead of knowledge and skills that are related to this type of leadership
Wait Up!: Attachment and Sovereign Power.
Sociologists and feminist scholars have, over many decades, characterised attachment as a social construction that functions to support political and gender conservatism. We accept that attachment theory has seen use to these ends and consider recent deployments of attachment theory as justification for a minimal State within conservative political discourse in the UK since 2009. However, we contest that attachment is reducible to its discursive construction. We consider Judith Butler's depiction of the infant attached to an abusive caregiver as a foundation and parallel to the position of the adult citizen subjected to punitive cultural norms and political institutions. We develop and qualify Butler's account, drawing on the insights offered by the work of Lauren Berlant. We also return to Foucault's Psychiatric Power lectures, in which familial relations are situated as an island of sovereign power within the sea of modern disciplinary institutions. These reflections help advance analysis of three important issues: the social and political implications of attachment research; the relationship between disciplinary and sovereign power in the affective dynamic of subjection; and the political and ethical status of professional activity within the psy disciplines.This is the final version of the article. It first appeared from Springer via http://dx.doi.org/10.1007/s10767-014-9192-
Assessing and Improving Positional Accuracy and its Effects on Areal Estimation at Coleambally Irrigation Area
If management decisions are made with geospatial data that have not been assessed for positional accuracy, then debate about both methodologies of measurement and management decisions can occur. This debate, in part, can be avoided by assessing the positional accuracy of geospatial data, leading to increased confidence (decreased uncertainty) in both the data and the decisions made from the data. In this study, we assessed the positional accuracy of two Geographic Information System (GIS) baseline datasets at the Coleambally Irrigation Area (CIA); high-resolution digital aerial photography acquired in January 2000, and the Digital Topographic Data Base (DTDB) roads data. We also assessed areal error of paddock measurements from an improved accuracy version of the high-resolution digital aerial photography. Positional accuracies were assessed by comparing well-defined features from both baseline datasets (original aerial photography and DTDB roads) to high-level accuracy Differential Global Positioning System (DGPS) data for the same features. This assessment showed that neither baseline dataset met the National Mapping Council of Australia’s standards of map accuracy. Consequently, we processed the original digital photography to create an improved dataset, which was over 2.5 times more accurate than the original photography, and over 4 times more accurate than the DTDB data. The improved dataset also met the map accuracy standard for Australia. We also assessed areal error by comparing paddock boundaries delineated from the improved dataset to those delineated from a DGPS associated with paddock soil surveys. The 90% confidence interval measured from the improved data for any individual paddock is approximately at the ± 5% target error set by Coleambally Irrigation Limited (CIL). The 95% confidence interval is roughly ± 6%. Overall areal error of multiple paddocks is much lower than the individual case with the 95% confidence interval for 2 paddocks being from about ± 4% error reducing to less than ± 2% for 8 or more paddocks. Knowledge of both positional and areal accuracies of the improved high-resolution digital aerial photography provides a means to more effectively manage environmental compliance of rice farmers at CIA and gives the CIL justification for making management decisions from this spatial data
Controlling bias and inflation in epigenome- and transcriptome-wide association studies using the empirical null distribution
We show that epigenome- and transcriptome-wide association studies (EWAS and TWAS) are prone to significant inflation and bias of test statistics, an unrecognized phenomenon introducing spurious findings if left unaddressed. Neither GWAS-based methodology nor state-of-the-art confounder adjustment methods completely remove bias and inflation. We propose a Bayesian method to control bias and inflation in EWAS and TWAS based on estimation of the empirical null distribution. Using simulations and real data, we demonstrate that our method maximizes power while properly controlling the false positive rate. We illustrate the utility of our method in large-scale EWAS and TWAS meta-analyses of age and smoking
Effective Prolonged Therapy with Voriconazole in a Lung Transplant Recipient with Spondylodiscitis Induced by Scedosporium apiospermum
Scedosporium/Pseudallescheria species are frequently seen in
cystic fibrosis patients. However, disseminated forms after lung
transplantation in these patients are rarely seen, but often with
poor outcome. In this case report we describe a lung transplant
recipient with cystic fibrosis who developed a spondylodiscitis
that was caused by Scedosporium apiospermum. The patient was
treated with anti-fungal treatment by voriconazole for over three
years with a clinical good response and without the need for
surgical intervention. To our opinion this is the first
anti-fungal treated case of invasive disease caused by
Scedosporium/Pseudallescheria in a cystic fibrosis (CF) patient
who underwent lung transplantation that survived
Monocyte derived macrophages from lung transplantation patients have an increased M2 profile
Introduction: Lung transplantation (LTx) is a last treatment option for patients with an end-stage pulmonary disease. Although the monocyte-macrophage lineage is accepted to be clinically important only little is known about the effect of immunosuppressive drugs in combination with chronic rejection. It is likely that local inflammatory conditions and immunosuppressive medication alter the activation state of macrophages. The goal of this study was to determine how monocyte derived macrophage subsets were affected in LTx patients. Methods: PBMC's were obtained by ficoll density gradient centrifugation and cultured in RPMI with 10% FCS for 7 days. For identification and quantification of cultured monocyte derived macrophages fluorescence-activated cell sorting analysis was performed. Markers including; CD16, CD64, CD200r, CD163 and CD14 were used to determine M1, M2a and M2b macrophages. Results: Transplantation patients showed an increased and frequency (p = 0.0245) for M2a macrophages compared to healthy controls. Also, median fluorescence intensity of CD163, CD64, HLA-DR and CD200r increased with transplantation. Discussion: An increase in M2 phenotype macrophages in transplantation patients is in line with the latest findings in solid organ transplantation. M2 macrophages are associated with tissue-regeneration and diminished capacity of host defence, possibly leading to fibrosis development [1]. What this exactly means for the disease process and current clinical assessment requires further investigation
Exceptional LAS Requests in Eurotransplant:Analysis of an 8-year Effort to Improve Lung Allocation for Precarious Patients
PURPOSE: Following introduction of the lung allocation score (LAS) in 2011, Eurotransplant member centers can apply for an exceptional LAS (eLAS) if the calculated LAS insufficiently reflects the perceived transplant benefit for a patient, specifically in case of primary pulmonary hypertension group 1 and 4; combined lung+non-renal transplantation; rare diseases; or extracorporeal support. Each eLAS proposal is evaluated by a LAS Review Board, consisting of ≥3 lung transplant experts, which subsequently declines or approves the eLAS request in consensus of ≥3 votes. In case of a lower than accepted score, predefined business rules to assign LAS percentiles are used. METHODS: A retrospective analysis of all eLAS requests in Eurotransplant from December 2011 until September 2019. RESULTS: Overall, 5183 lung transplants (deceased donors) were performed and 420 eLAS requests were made (Germany 52%, Netherlands 18%, Austria 18%, Belgium 13%), of which 116 (28%) were approved. Most eLAS requests concerned group B/Pulmonary vascular disease (44%), followed by group C/Cystic fibrosis or immunodeficiency disorder (28%), then group D/Restrictive lung disease (15%) and finally group A/Obstructive lung disease (11%); whereas 10 patients (2%) were not classified. The proportion of accepted eLAS requests significantly differed between countries (Germany 25%, Netherlands 37%, Austria 20%, Belgium 36%) (p=0.042). eLAS requests decreased in the Netherlands following its LAS introduction in 2014 (2011-2014 mean 13/yr vs. 2015-2019 mean 4.6/yr; p=0.060). However, since 2015 an overall annual increasing number of eLAS requests is seen, with doubling of the eLAS requests in 2018 vs. 2015, but no difference in acceptance rate (2015-2018: 22.4%) (Figure). Acceptance rates were 38% for Group B, 21% for Group C, 20% for Group D and 11% for Group A. CONCLUSION: The observed variations require further investigation to optimize lung allocation for specific patient populations in Eurotransplant
The relationship of fat and muscle measurements with emphysema and bronchial wall thickening in smokers
Introduction Differences in body composition in patients with COPD may have important prognostic value and may provide opportunities for patient-specific management. We investigated the relation of thoracic fat and muscle with computed tomography (CT)-measured emphysema and bronchial wall thickening. Methods Low-dose baseline chest CT scans from 1031 male lung cancer screening participants from one site were quantified for emphysema, bronchial wall thickening, subcutaneous fat, visceral fat and skeletal muscle. Body composition measurements were performed by segmenting the first slice above the aortic arch using Hounsfield unit thresholds with region growing and manual corrections. COPD presence and severity were evaluated with pre-bronchodilator spirometry testing. Results Participants had a median age of 61.5 years (58.6–65.6, 25th–75th percentile) and median number of 38.0 pack-years (28.0–49.5); 549 (53.2%) were current smokers. Overall, 396 (38.4%) had COPD (256 Global Initiative for Chronic Obstructive Lung Disease (GOLD) 1, 140 GOLD 2–3). Participants with COPD had less subcutaneous fat, visceral fat and skeletal muscle (p<0.001 for all). With increasing GOLD stages, subcutaneous (p=0.005) and visceral fat values (p=0.004) were higher, and skeletal muscle was lower (p=0.004). With increasing severity of CT-derived emphysema, subcutaneous fat, visceral fat and skeletal muscle values were lower (p<0.001 for all). With increasing CT-derived bronchial wall thickness, subcutaneous and visceral fat values were higher (p<0.001 for both), without difference in skeletal muscle. All statistical relationships remained when adjusted for age, pack-years and smoking status. Conclusion COPD presence and emphysema severity are associated with smaller amounts of thoracic fat and muscle, whereas bronchial wall thickening is associated with fat accumulation
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