544 research outputs found
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Process Evaluation Insights on Program Implementation
This white paper has the explicit intention to draw lessons learned from the past 30 years of energy efficiency program evaluation in order to facilitate improved program design and implementation going forward. The discussion in this white paper is developed based on interviews with 43 individuals who are either practitioners or users of process and market evaluation. In addition, we obtained references to published materials from our contacts and reviewed conference proceedings dating from 1992 to 2008, which resulted in a review of nearly 100 articles or reports documenting the results of, or commenting on, process and market evaluations
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Adaptation of Proteins to the Cold in Antarctic Fish: A Role for Methionine?
The evolution of antifreeze glycoproteins has enabled notothenioid fish to flourish in the freezing waters of the Southern Ocean. Whereas successful at the biodiversity level to life in the cold, paradoxically at the cellular level these stenothermal animals have problems producing, folding, and degrading proteins at their ambient temperatures of -1.86 °C. In this first multi-species transcriptome comparison of the amino acid composition of notothenioid proteins with temperate teleost proteins, we show that, unlike psychrophilic bacteria, Antarctic fish provide little evidence for the mass alteration of protein amino acid composition to enhance protein folding and reduce protein denaturation in the cold. The exception was the significant overrepresentation of positions where leucine in temperate fish proteins was replaced by methionine in the notothenioid orthologues. We hypothesize that these extra methionines have been preferentially assimilated into the genome to act as redox sensors in the highly oxygenated waters of the Southern Ocean. This redox hypothesis is supported by analyses of notothenioids showing enrichment of genes associated with responses to environmental stress, particularly reactive oxygen species. So overall, although notothenioid fish show cold-associated problems with protein homeostasis, they may have modified only a selected number of biochemical pathways to work efficiently below 0 °C. Even a slight warming of the Southern Ocean might disrupt the critical functions of this handful of key pathways with considerable impacts for the functioning of this ecosystem in the future
A Cross-cultural Examination of Preferences for Work Attributes
Purpose – The purpose of this paper is to examine the relationship between individual- and country-level values and preferences for job/organizational attributes. Design/methodology/approach – Survey data were collected from 475 full-time employees (average of nine years work experience, and three years in a managerial position) enrolled in part-time MBA programs in seven countries. Findings – Preference for a harmonious workplace is positively related to horizontal collectivism, whereas preference for remuneration/advancement is positively related to vertical individualism. The authors also find a positive relationship between preference for meaningful work and horizontal individualism, and between preference for employer prestige and social adjustment (SA) needs. Research limitations/implications – Although the sample comprised experienced, full-time professionals, using graduate business students may limit generalizability. Overall, the results provide initial support for the utility of incorporating the multi-dimensional individualism and collectivism measure, as well as SA needs, when assessing the relationships between values and employee preferences. Practical implications – For practitioners, the primary conclusion is that making assumptions about preferences based on nationality is risky. Findings may also prove useful for enhancing person-organization fit and the ability to attract and retain qualified workers. Originality/value – This study extends research on workers’ preferences by incorporating a new set of values and sampling experienced workers in a range of cultural contexts
Feasibility cluster randomised controlled trial of a within-consultation intervention to reduce antibiotic prescribing for children presenting to primary care with acute respiratory tract infection and cough
Objective To investigate recruitment and retention, data collection methods and the acceptability of a ‘within-consultation’ complex intervention designed to reduce antibiotic prescribing.
Design Primary care feasibility cluster randomised controlled trial.
Setting 32 general practices in South West England recruiting children from October 2014 to April 2015.
Participants Children (aged 3 months to <12 years) with acute cough and respiratory tract infection (RTI).
Intervention A web-based clinician-focussed clinical rule to predict risk of future hospitalisation and a printed leaflet with individualised child health information for carers, safety-netting advice and a treatment decision record.
Controls Usual practice, with clinicians recording data on symptoms, signs and treatment decisions.
Results Of 542 children invited, 501 (92.4%) consented to participate, a month ahead of schedule. Antibiotic prescribing data were collected for all children, follow-up data for 495 (98.8%) and the National Health Service resource use data for 494 (98.6%). The overall antibiotic prescribing rates for children’s RTIs were 25% and 15.8% (p=0.018) in intervention and control groups, respectively. We found evidence of postrandomisation differential recruitment: the number of children recruited to the intervention arm was higher (292 vs 209); over half were recruited by prescribing nurses compared with less than a third in the control arm; children in the intervention arm were younger (median age 2 vs 3 years controls, p=0.03) and appeared to be more unwell than those in the control arm with higher respiratory rates (p<0.0001), wheeze prevalence (p=0.007) and global illness severity scores assessed by carers (p=0.045) and clinicians (p=0.01). Interviews with clinicians confirmed preferential recruitment of less unwell children to the trial, more so in the control arm.
Conclusion Differential recruitment may explain the paradoxical antibiotic prescribing rates. Future cluster level studies should consider designs which remove the need for individual consent postrandomisation and embed the intervention within electronic primary care records
Survey of the quality of experimental design, statistical analysis and reporting of research using animals
For scientific, ethical and economic reasons, experiments involving animals should be appropriately designed, correctly analysed and transparently reported. This increases the scientific validity of the results, and maximises the knowledge gained from each experiment. A minimum amount of relevant information must be included in scientific publications to ensure that the methods and results of a study can be reviewed, analysed and repeated. Omitting essential information can raise scientific and ethical concerns. We report the findings of a systematic survey of reporting, experimental design and statistical analysis in published biomedical research using laboratory animals. Medline and EMBASE were searched for studies reporting research on live rats, mice and non-human primates carried out in UK and US publicly funded research establishments. Detailed information was collected from 271 publications, about the objective or hypothesis of the study, the number, sex, age and/or weight of animals used, and experimental and statistical methods. Only 59% of the studies stated the hypothesis or objective of the study and the number and characteristics of the animals used. Appropriate and efficient experimental design is a critical component of high-quality science. Most of the papers surveyed did not use randomisation (87%) or blinding (86%), to reduce bias in animal selection and outcome assessment. Only 70% of the publications that used statistical methods described their methods and presented the results with a measure of error or variability. This survey has identified a number of issues that need to be addressed in order to improve experimental design and reporting in publications describing research using animals. Scientific publication is a powerful and important source of information; the authors of scientific publications therefore have a responsibility to describe their methods and results comprehensively, accurately and transparently, and peer reviewers and journal editors share the responsibility to ensure that published studies fulfil these criteria
Self-concept orientation and organizational identification: a mediated relationship
Purpose
The purpose of this paper is to test a mediated model of the relationship between self-concept orientation (individualist and collectivist) and organizational identification (OrgID, Cooper and Thatcher, 2010), with proposed mediators including the need for organizational identification (nOID, Glynn, 1998) as well as self-presentation concerns of social adjustment (SA) and value expression (VE, Highhouse et al., 2007). Design/methodology/approach
Data were collected from 509 participants in seven countries. Direct and mediation effects were tested using structural equation modeling (AMOS 25.0). Findings
Individualist self-concept orientation was positively related to VE and collectivist self-concept orientation was positively related to nOID, VE and SA. VE mediated the relationship between both self-concept orientations and OrgID. In addition, nOID mediated the relationship for collectivist self-concept orientation. Practical implications
This study identifies underlying psychological needs as mediators of the relationship of self-concept orientation to OrgID. Understanding these linkages enables employers to develop practices that resonate with the self-concept orientations and associated psychological needs of their employees, thereby enhancing OrgID. Originality/value
This study provides a significant contribution to the OrgID literature by proposing and testing for relationships between self-concept orientations and OrgID as mediated by underlying psychological needs. The results provide support for the mediated model as well as many of Cooper and Thatcher’s (2010) theoretical propositions, with notable exceptions
Rapid reduction versus abrupt quitting for smokers who want to stop soon: a randomised controlled non-inferiority trial
Background: The standard way to stop smoking is to stop abruptly on a quit day with no prior reduction in consumption of cigarettes. Many smokers feel that reduction is natural and if reduction programmes were offered, many more might take up treatment. Few trials of reduction versus abrupt cessation have been completed. Most are small, do not use pharmacotherapy, and do not meet the standards necessary to obtain a marketing authorisation for a pharmacotherapy.\ud
Design/Methods: We will conduct a non-inferiority andomised trial of rapid reduction versus standard abrupt cessation among smokers who want to stop smoking. In the reduction arm,participants will be advised to reduce smoking consumption by half in the first week and to 25% of baseline in the second, leading up to a quit day at which participants will stop smoking completely.This will be assisted by nicotine patches and an acute form of nicotine replacement therapy. In the abrupt arm participants will use nicotine patches only, whilst smoking as normal, for two weeks prior to a quit day, at which they will also stop smoking completely. Smokers in either arm will have standard withdrawal orientated behavioural support programme with a combination of nicotine patches and acute nicotine replacement therapy post-cessation.\ud
Outcomes/Follow-up: The primary outcome of interest will be prolonged abstinence from smoking, with secondary trial outcomes of point prevalence, urges to smoke and withdrawal\ud
symptoms. Follow up will take place at 4 weeks, 8 weeks and 6 months post-quit day
Self-concept Orientation and Organizational Identification: A Mediated Relationship
Purpose: The purpose of this paper is to test a mediated model of the relationship between self-concept orientation (individualist and collectivist) and organizational identification (OrgID, Cooper and Thatcher, 2010), with proposed mediators including the need for organizational identification (nOID, Glynn, 1998) as well as self-presentation concerns of social adjustment (SA) and value expression (VE, Highhouse et al., 2007). Design/methodology/approach: Data were collected from 509 participants in seven countries. Direct and mediation effects were tested using structural equation modeling (AMOS 25.0). Findings: Individualist self-concept orientation was positively related to VE and collectivist self-concept orientation was positively related to nOID, VE and SA. VE mediated the relationship between both self-concept orientations and OrgID. In addition, nOID mediated the relationship for collectivist self-concept orientation. Practical implications: This study identifies underlying psychological needs as mediators of the relationship of self-concept orientation to OrgID. Understanding these linkages enables employers to develop practices that resonate with the self-concept orientations and associated psychological needs of their employees, thereby enhancing OrgID. Originality/value: This study provides a significant contribution to the OrgID literature by proposing and testing for relationships between self-concept orientations and OrgID as mediated by underlying psychological needs. The results provide support for the mediated model as well as many of Cooper and Thatcher’s (2010) theoretical propositions, with notable exceptions
Doppler evaluation of left ventricular diastolic filling in children with systemic hypertension
To assess left ventricular (LV) diastolic function in children with systemic hypertension, 11 patients with hypertension (mean blood pressure 99 mm Hg) and 7 normal patients (mean blood pressure 78 mm Hg) underwent M-mode echocardiography and pulsed Doppler examination of the LV inflow. From a digitized trace of the LV endocardium and a simultaneous phonocardiogram, echocardiographic diastolic time intervals, peak rate of increase in LV dimension (dD/dt), and dD/dt normalized for LV end-diastolic dimension (dD/dt) were measured. Doppler diastolic time intervals, peak velocities at rapid filling (E velocity) and atrial contraction (A velocity), and the ratio of E and A velocities were measured. The following areas under the Doppler curve and their percent of the total area were determined: first 33% of diastole (0.33 area), first 50% of diastole, triangle under the A velocity (A area), and the triangle under the E velocity (E area). The A velocity (patients with HYPERTENSION = 0.68 +/- 0.11 m/s, normal SUBJECTS = 0.49 +/- 0.08 m/s), the 0.33 area/total area (patients with HYPERTENSION = 0.49 +/- 0.09, normal SUBJECTS = 0.58 +/- 0.08), the A area (patients with HYPERTENSION = 0.17 +/- 0.05, normal SUBJECTS = 0.12 +/- 0.03), and the A area/total area (patients with HYPERTENSION = 0.30 +/- 0.11, normal SUBJECTS = 0.20 +/- 0.07) were significantly different between groups (p < 0.05). M-mode and Doppler time intervals, dt/D, E velocity, and the remaining Doppler areas were not significantly different between groups. The normal subjects and patients with hypertension did not differ significantly in echocardiographic LV size and thickness or in percent shortening fraction. This study shows that abnormal patterns of LV diastolic filling occur in children with mild systemic hypertension. These diastolic abnormalities are detectable by mitral valve Doppler ultrasound examination when standard M-mode echocardiographic indexes of diastolic function are still normal and before the development of systolic function abnormalities or LV hypertrophy on the M-mode echocardiogram.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/25489/1/0000030.pd
The Concise Guide to PHARMACOLOGY 2023/24:Nuclear hormone receptors
The Concise Guide to PHARMACOLOGY 2023/24 is the sixth in this series of biennial publications. The Concise Guide provides concise overviews, mostly in tabular format, of the key properties of approximately 1800 drug targets, and nearly 6000 interactions with about 3900 ligands. There is an emphasis on selective pharmacology (where available), plus links to the open access knowledgebase source of drug targets and their ligands (https://www.guidetopharmacology.org/), which provides more detailed views of target and ligand properties. Although the Concise Guide constitutes almost 500 pages, the material presented is substantially reduced compared to information and links presented on the website. It provides a permanent, citable, point-in-time record that will survive database updates. The full contents of this section can be found at http://onlinelibrary.wiley.com/doi/10.1111/bph.16179. Nuclear hormone receptors are one of the six major pharmacological targets into which the Guide is divided, with the others being: G protein-coupled receptors, catalytic receptors, enzymes and transporters. These are presented with nomenclature guidance and summary information on the best available pharmacological tools, alongside key references and suggestions for further reading. The landscape format of the Concise Guide is designed to facilitate comparison of related targets from material contemporary to mid-2023, and supersedes data presented in the 2021/22, 2019/20, 2017/18, 2015/16 and 2013/14 Concise Guides and previous Guides to Receptors and Channels. It is produced in close conjunction with the Nomenclature and Standards Committee of the International Union of Basic and Clinical Pharmacology (NC-IUPHAR), therefore, providing official IUPHAR classification and nomenclature for human drug targets, where appropriate.</p
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