609 research outputs found

    The Impact of the COVID-19 Pandemic on the Career Preparedness of Chemistry Graduates

    Get PDF
    Recent research has established that the COVID-19 pandemic has resulted in a shift in University student expectations of their graduate prospects due to unavoidable changes in their learning experiences during the pandemic, as well as the decrease in number of available jobs because of the economic impact of measures put in place to reduce COVID-19 transmission. This study used a survey to investigate: (a) the impact of the pandemic on student destinations six months after graduation and (b) the variations in perceptions of personal level of career preparedness between pre-pandemic graduates and graduates at different stages of the pandemic (i.e. the graduating classes of 2020 and 2021). 40 University of Leicester chemistry graduates engaged with the survey and analysis of the data revealed a non-statistically significant negative impact on employment six-months after graduation that appears to only affect graduates in 2020. The data also suggests that increased experience of the blended learning approaches adopted at the University of Leicester during the pandemic studies may better prepare graduates for remote working practices (e.g. using remote video conferencing software)

    Impact of the COVID-19 Pandemic on Chemistry Student and Staff Perceptions of their Learning/Teaching Experience

    Get PDF
    In response to the COVID-19 pandemic, the University of Leicester introduced a blended teaching model to continue delivery of their undergraduate Chemistry courses in 2020/21. The transition from in-person to blended provided a good opportunity to investigate student engagement in the blended environment, along with the attitudes of faculty members adapting to this mode of delivery. Data from 94 undergraduate students and 13 staff members was collected using surveys, focus groups, and interviews and analyzed using the community of inquiry framework. Analysis of the collected data found that, while some students felt unable to always engage and focus with the remote material, they were pleased with the University’s response to the pandemic. Staff members commented on the challenges of gauging student engagement and understanding in synchronous contact sessions because students did not make use of cameras or microphones but praised the array of digital tools available that helped to facilitate some degree of student interaction. This study suggests there is scope for continuation and wider implementation of blended learning environments to provide additional contingency for further disruption to on-campus teaching and to provide new teaching opportunities, and it also presents recommendations as to how to reinforce the community of inquiry presences in blended learning

    Selective electrochemiluminescent sensing of saccharides using boronic acid-modified coreactant

    Get PDF
    We report a strategy for modulating the electrogenerated chemiluminescence (ECL) response by integrating a boronic acid to the chemical structure of coreactants. Excellent selectivity for d-glucose was achieved by tuning the linker length of a bis-boronic acid amine coreactant.</p

    Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes

    Get PDF
    Background: Most cases of human African trypanosomiasis (HAT) start with a bite from one of the subspecies of Glossina fuscipes. Tsetse use a range of olfactory and visual stimuli to locate their hosts and this response can be exploited to lure tsetse to insecticide-treated targets thereby reducing transmission. To provide a rational basis for cost-effective designs of target, we undertook studies to identify the optimal target colour. Methodology/Principal Findings: On the Chamaunga islands of Lake Victoria , Kenya, studies were made of the numbers of G. fuscipes fuscipes attracted to targets consisting of a panel (25 cm square) of various coloured fabrics flanked by a panel (also 25 cm square) of fine black netting. Both panels were covered with an electrocuting grid to catch tsetse as they contacted the target. The reflectances of the 37 different-coloured cloth panels utilised in the study were measured spectrophotometrically. Catch was positively correlated with percentage reflectance at the blue (460 nm) wavelength and negatively correlated with reflectance at UV (360 nm) and green (520 nm) wavelengths. The best target was subjectively blue, with percentage reflectances of 3%, 29%, and 20% at 360 nm, 460 nm and 520 nm respectively. The worst target was also, subjectively, blue, but with high reflectances at UV (35% reflectance at 360 nm) wavelengths as well as blue (36% reflectance at 460 nm); the best low UV-reflecting blue caught 3× more tsetse than the high UV-reflecting blue. Conclusions/Significance: Insecticide-treated targets to control G. f. fuscipes should be blue with low reflectance in both the UV and green bands of the spectrum. Targets that are subjectively blue will perform poorly if they also reflect UV strongly. The selection of fabrics for targets should be guided by spectral analysis of the cloth across both the spectrum visible to humans and the UV region

    Science and Ideology in Economic, Political, and Social Thought

    Get PDF
    This paper has two sources: One is my own research in three broad areas: business cycles, economic measurement and social choice. In all of these fields I attempted to apply the basic precepts of the scientific method as it is understood in the natural sciences. I found that my effort at using natural science methods in economics was met with little understanding and often considerable hostility. I found economics to be driven less by common sense and empirical evidence, then by various ideologies that exhibited either a political or a methodological bias, or both. This brings me to the second source: Several books have appeared recently that describe in historical terms the ideological forces that have shaped either the direct areas in which I worked, or a broader background. These books taught me that the ideological forces in the social sciences are even stronger than I imagined on the basis of my own experiences. The scientific method is the antipode to ideology. I feel that the scientific work that I have done on specific, long standing and fundamental problems in economics and political science have given me additional insights into the destructive role of ideology beyond the history of thought orientation of the works I will be discussing

    Changes in academic research performance over time: A study of institutional accumulative advantage

    Full text link
    This study examines changes in institutional research performance over time by analyzing data from four national surveys of the American professoriate conducted between 1969 and 1988. To assess whether groups of institutions may be accumulating advantage relative to others, research activities are compared across five Carnegie institution types. Weights are created to adjust for sampling differences and research output measures are standardized to adjust for variation by discipline. Findings show an overall strengthening of research emphasis reflected by a stronger orientation toward research (more faculty holding Ph.D.'s and having a primary interest in research) and higher research output (grant and publication performance). While Research-I universities have retained their initial (1969) advantage, they have not accumulated more. Meanwhile, Doctoral-Granting-I universities have gained strength relative to Research-II institutions. Research at Comprehensive-I was also up, but at a slower rate than the other Carnegie groups.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43603/1/11162_2004_Article_BF00992271.pd

    Faculty research productivity: Some moderators of associated stressors

    Full text link
    Using person environment-fit theory, stress measures were developed on 894 faculty, a subgroup of the 3,972 faculty in the 1988 NCRIPTAL national survey. Within three institutional groups, three fields of study (humanities, natural sciences, and social sciences), three research output variables, and eight moderating variables (singly and collectively) were correlated (direct and partials) with two measures of stress. The findings lend support to the theoretical model. The outcomes also show that moderate levels of stress can be appreciably and significantly mitigated by some selected personal variables. The environmental variables were generally ineffective in moderating the correlations between stresses and productivity. Sex differences exist. Research self-competence is a strong modifier for both sexes and is exceptionally potent for women.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43612/1/11162_2004_Article_BF00992157.pd

    Selective electrochemiluminescent sensing of saccharides using boronic acid-modified coreactant

    Get PDF
    We report a strategy for modulating the electrogenerated chemiluminescence (ECL) response by integrating a boronic acid to the chemical structure of coreactants.</p

    First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

    Get PDF
    Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signalto- noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars over a fraction of a hertz and several spin-down values. In this paper we describe a narrow-band search of 11 pulsars using data from Advanced LIGO’s first observing run. Although we have found several initial outliers, further studies show no significant evidence for the presence of a gravitational wave signal. Finally, we have placed upper limits on the signal strain amplitude lower than the spin-down limit for 5 of the 11 targets over the bands searched; in the case of J1813-1749 the spin-down limit has been beaten for the first time. For an additional 3 targets, the median upper limit across the search bands is below the spin-down limit. This is the most sensitive narrow-band search for continuous gravitational waves carried out so far
    corecore