17,825 research outputs found
CILIP Yorkshire and Humberside Member Network Visit to Insight: Collections and Research Centre at The National Science and Media Museum, Bradford, West Yorkshire, 09 March 2017
This article is an account of a Chartered Institute of Library and Information Professionals (CILIP) Yorkshire and Humberside Member Network visit to Insight: Collections and Research Centre at the National Science and Media Museum in Bradford, West Yorkshire. It highlights the range and depth of their collection and some of the research currently being undertaken. Their library is an underused resource and efforts are being made to enhance the accessibility and usage of the whole collection. The article hopes to illustrate how the collection is extremely useful and fascinating to those studying social history, not just science and technology. The visit allowed the author to continue her professional development (CPD), benefitting both her studies for a CILIP-accredited qualification and her work in Libraries and Learning Innovation. This article is an expanded version of a report on the visit written for the CILIP Yorkshire and Humberside Member Network blog (Green, 2017)
The power of the individual voice: Interrogating continuity at a time when the open communication of research is disrupted by unruly speakers and publics
Hyperconnected societies offer new opportunities for the role of the individual voice. A deregulated world of information poses a paradox, however, in which fake news might conceivably underpin the political agenda more than informed research. The sheer amount of information available forces publics and audience members to seek shortcuts to knowledge through access to preferred academic, public intellectual or ‘thought leader’ perspectives. Drawing upon theories of deliberative democracy and open communication, this paper critiques the roles of academic, public intellectual and thought leader to move beyond discussion of the value of individual voices in the sharing of knowledge. It suggests that both public intellectuals and thought leaders illuminate how the individual voice makes an important contribution in providing continuity when open communication of research is disrupted by unruly speakers and publics
News frames for COVID-19 – a comparison of Australian (Australian broadcasting corporation) and Vietnamese (tuoi tre online) online news services in two key weeks in 2020
This article investigates the differences and similarities between the news frames used by online mainstream media in Vietnam and Australia when reporting COVID-19 in the early waves of the pandemic. The project uses constant comparative analysis to interrogate data gathered from two online news sources: ABC Online (Australian Broadcasting Corporation) in Australia, and Tuoi Tre Online in Vietnam. The article concludes that the Australian Broadcasting Corporation coverage focuses more on social, political and economic factors than is the case with Tuoi Tre Online, which foregrounds civic responsibility in response to the COVID-19 epidemic. The Australian Broadcasting Corporation highlights how COVID-19 amplifies the long-term consequences of social disadvantage while Tuoi Tre Online, in contrast, emphasises the short-term, acute community impacts of outbreaks, given that these require rapid identification and control. It is argued that differences between the Australian Broadcasting Corporation\u27s and Tuoi Tre Online\u27s framings of the pandemic reflect national differences in governance of disasters. Tuoi Tre Online perceives healthy citizenry as soldiers, and constructs the vulnerable and infected as challenges to the biological safety of the whole: the majority social collective. In contrast, the Australian Broadcasting Corporation frames vulnerable and infected individuals as important, focussing on their rights and on the responsibilities of mainstream society towards those who are at risk. © The Author(s) 2023
Introduction to the AdS/CFT correspondence
This is a pedagogical introduction to the AdS/CFT correspondence, based on
lectures delivered by the author at the third IDPASC school. Starting with the
conceptual basis of the holographic dualities, the subject is developed
emphasizing some concrete topics, which are discussed in detail. A very brief
introduction to string theory is provided, containing the minimal ingredients
to understand the origin of the AdS/CFT duality. Other topics covered are the
holographic calculation of correlation functions, quark-antiquark potentials
and transport coefficients.Comment: 64 pages, 12 figures;v2: minor improvements;v3: references adde
A possibilistic interpretation of ensemble forecasts: experiments on the imperfect Lorenz 96 system
Abstract. Ensemble forecasting has gained popularity in the field of numerical medium-range weather prediction as a means of handling the limitations inherent to predicting the behaviour of high dimensional, nonlinear systems, that have high sensitivity to initial conditions. Through small strategical perturbations of the initial conditions, and in some cases, stochastic parameterization schemes of the atmosphere-ocean dynamical equations, ensemble forecasting allows one to sample possible future scenarii in a Monte-Carlo like approximation. Results are generally interpreted in a probabilistic way by building a predictive density function from the ensemble of weather forecasts. However, such a probabilistic interpretation is regularly criticized for not being reliable, because of the chaotic nature of the dynamics of the atmospheric system as well as the fact that the ensembles of forecasts are not, in reality, produced in a probabilistic manner. To address these limitations, we propose a novel approach: a possibilistic interpretation of ensemble predictions, taking inspiration from fuzzy and possibility theories. Our approach is tested on an imperfect version of the Lorenz 96 model and results are compared against those given by a standard probabilistic ensemble dressing. The possibilistic framework reproduces (ROC curve, resolution) or improves (ignorance, sharpness, reliability) the performance metrics of a standard univariate probabilistic framework. This work provides a first step to answer the question whether probability distributions are the right tool to interpret ensembles predictions. </jats:p
The universal cover of an algebra without double bypass
Let A be a basic finite dimensional and connected algebra over an
algebraically closed field k with zero characteristic. If the ordinary quiver
of A has no double bypasses, we show that A admits a Galois covering which
satisfies a universal property with respect to the Galois coverings of A. This
universal property is similar to the one of the universal cover of a connected
topological space.Comment: This text (21 pages) gives detailed proofs of the results announced
in a previous note of the author (The fundamental group of a triangular
algebra without double bypasses) and extends the study of this previous note
to the Galois coverings of an algebr
Influence of association state and DNA binding on the O2-reactivity of [4Fe-4S] fumarate and nitrate reduction (FNR) regulator
The fumarate and nitrate reduction (FNR) regulator is the master switch for the transition between anaerobic and aerobic respiration in Escherichia coli. Reaction of dimeric [4Fe-4S] FNR with O2 results in conversion of the cluster into a [2Fe-2S] form, via a [3Fe-4S] intermediate, leading to the loss of DNA binding through dissociation of the dimer into monomers. In the present paper, we report studies of two previously identified variants of FNR, D154A and I151A, in which the form of the cluster is decoupled from the association state. In vivo studies of permanently dimeric D154A FNR show that DNA binding does not affect the rate of cluster incorporation into the apoprotein or the rate of O2-mediated cluster loss. In vitro studies show that O2-mediated cluster conversion for D154A and the permanent monomer I151A FNR is the same as in wild-type FNR, but with altered kinetics. Decoupling leads to an increase in the rate of the [3Fe-4S]1+ into [2Fe-2S]2+ conversion step, consistent with the suggestion that this step drives association state changes in the wild-type protein. We have also shown that DNA-bound FNR reacts more rapidly with O2 than FNR free in solution, implying that transcriptionally active FNR is the preferred target for reaction with O2
On Galois coverings and tilting modules
Let A be a basic connected finite dimensional algebra over an algebraically
closed field, let G be a group, let T be a basic tilting A-module and let B the
endomorphism algebra of T. Under a hypothesis on T, we establish a
correspondence between the Galois coverings with group G of A and the Galois
coverings with group G of B. The hypothesis on T is expressed using the Hasse
diagram of basic tilting A-modules and is always verified if A is of finite
representation type. Then, we use the above correspondence to prove that A is
simply connected if and only if B is simply connected, under the same
hypothesis on T. Finally, we prove that if a tilted algebra B of type Q is
simply connected, then Q is a tree and the first Hochschild cohomology group of
B vanishesComment: Fourth version. A result on the simple connectedness of tilted
algebras was adde
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