Development of composite ionizer materials final report

Composite ionizer materials - effect of secondary additions to tungsten powder on sintering mechanisms and heat stability of porous structure

Urban Constellating

Urban Constellating took place on 13 February 2015 in Leeds, West Yorkshire. It was one of a series of events hosted by the Media and Place research cluster at Leeds Beckett University. The text was written by Zoë Thompson and Lynne Hibberd. Thanks to everyone who took part

Blazar Flaring Patterns (B-FlaP): Classifying Blazar Candidates of Uncertain type in the third Fermi-LAT catalog by Artificial Neural Networks

The Fermi Large Area Telescope (LAT) is currently the most important facility for investigating the GeV $\gamma$-ray sky. With Fermi LAT more than three thousand $\gamma$-ray sources have been discovered so far. 1144 ($\sim40\%$) of the sources are active galaxies of the blazar class, and 573 ($\sim20\%$) are listed as Blazar Candidate of Uncertain type (BCU), or sources without a conclusive classification. We use the Empirical Cumulative Distribution Functions (ECDF) and the Artificial Neural Networks (ANN) for a fast method of screening and classification for BCUs based on data collected at $\gamma$-ray energies only, when rigorous multiwavelength analysis is not available. Based on our method, we classify 342 BCUs as BL Lacs and 154 as FSRQs, while 77 objects remain uncertain. Moreover, radio analysis and direct observations in ground-based optical observatories are used as counterparts to the statistical classifications to validate the method. This approach is of interest because of the increasing number of unclassified sources in Fermi catalogs and because blazars and in particular their subclass High Synchrotron Peak (HSP) objects are the main targets of atmospheric Cherenkov telescopes.Comment: 18 pages, 17 figures, accepted for publication on MNRA

A Study of Student Sentiments Toward School

The purpose of this study was to determine sentiments toward school expressed by ninth grade students and to further determine whether there were significances of differences in school sentiments expressed between Chicano and Anglo students and between male and female students. The School Sentiment Index, Secondary measured school sentiment by’ 83 items arranged into the following subscales: Mode of Instruction, Authority and Control, Interpersonal Relationships, Learning, School Social Structure and Climate, Peer, and General School Attitude. The instrument was administered to 402 subjects composed of 200 females and 202 males. This population included 313 Anglos, 79 Chicanos, 8 Blacks, and 2 Vietnamese.. On total scores, the mean score for general population revealed g tendency toward negative sentiment. No mean score on individual subscales repealed a tendency toward the positive side of 2.5. Analyses of variance performed to compare groups indicated significances . of differences between races on total scores. Learning, and General School Attitude and between the sexes on total test scores. Authority I and Control, School Social Structure and Climate, and General School Attitude. Generally, Chicanos and females expressed sentiments more negative than their counterparts

Development and testing of porous ionizer materials, part I Summary report, Feb. 1965 - May 1966

Development and testing of porous tungsten ionizer materials for cesium contact engine

Globalizing Hayden White

This conversation originated in a plenary session organized by Ewa Domańska and María Inés La Greca under the same title of ‘Globalizing Hayden White’ at the III International Network for Theory of History Conference ‘Place and Displacement: The Spacing of History’ held at Södertörn University, Stockholm, in August 2018. In order to pay homage to Hayden White’s life work 5 months after his passing we knew that what was needed–and what he himself would have wanted–was a vibrant intellectual exchange. Our ‘celebration by discussion’ contains elaborated and revised versions of the presentations by scholars from China (Xin Chen), Latin America (María Inés La Greca, Veronica Tozzi Thompson), United States (Paul Roth), Western (Kalle Pihlainen) and East-Central Europe (Ewa Domańska). We took this opportunity of gathering scholars who represent different parts of the world, different cultures and approaches to reflect on White’s ideas in a global context. Our interest was in discussing how his work has been read and used (or even misread and misused) and how it has influenced theoretical discussions in different parts of the globe. Rather than just offering an account as experts, we mainly wanted to reflect on the current state of our field and the ways that White’s inheritance might and should be carried forward in the future.Fil: Domanska, Ewa. Adam Mickiewicz University in Poznań; PoloniaFil: la Greca, María Inés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tres de Febrero. Departamento de Metodología, Estadística y Matemáticas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Departamento de Filosofía; ArgentinaFil: Roth, Paul A.. University of California at Santa Cruz; Estados UnidosFil: Chen, Xin. Zhejiang University; ChinaFil: Tozzi, María Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tres de Febrero. Departamento de Metodología, Estadística y Matemáticas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Departamento de Filosofía; ArgentinaFil: Pihlainen, Kalle. Tallinn University; Estoni

Who Watches the Watchmen? An Appraisal of Benchmarks for Multiple Sequence Alignment

Multiple sequence alignment (MSA) is a fundamental and ubiquitous technique in bioinformatics used to infer related residues among biological sequences. Thus alignment accuracy is crucial to a vast range of analyses, often in ways difficult to assess in those analyses. To compare the performance of different aligners and help detect systematic errors in alignments, a number of benchmarking strategies have been pursued. Here we present an overview of the main strategies--based on simulation, consistency, protein structure, and phylogeny--and discuss their different advantages and associated risks. We outline a set of desirable characteristics for effective benchmarking, and evaluate each strategy in light of them. We conclude that there is currently no universally applicable means of benchmarking MSA, and that developers and users of alignment tools should base their choice of benchmark depending on the context of application--with a keen awareness of the assumptions underlying each benchmarking strategy.Comment: Revie

Enzyme-coated Janus nanoparticles that selectively bind cell receptors as a function of the concentration of glucose

A method is proposed for controlling the number of nanoparticles bound to cell membranes via RGDS peptide-integrin interactions. It consists of propelling nanoparticles bearing the peptides with enzymes (glucose oxidase), which disrupts biomolecular interactions as a function of the concentration of enzyme substrate (glucose)