35,565 research outputs found
Author inscription in Poems
No full textThis edition includes an author's inscription, "with the regards of J.T. Fields."Fields, James Thomas, 1817-1881
Customized turbulent flow fields
No full textA new approach is shown, which describes the interaction between an active grid excitation and a wind tunnel flow. With this approach we are able to find an excitation for the grid which reproduces an any turbulent flow field. Thereby we can bring free field measurements inside the wind tunnel. The presentation will show how the approach works and comparisons between reference data sets (outside measurements by ultrasonic anemometer) and wind tunnel flow fields generated by an active grid
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
England Calling: A Narratological Exploration of Martin Amis’s 'London Fields'
No full textThis paper will explore connections between fictional narrative methodology and contemporary conceptions of Englishness by applying aspects of Gerald Prince’s (2005) conceptions of a ‘postcolonial narratology’ to Martin Amis’s “London Fields” (1989). Amis has commented that ‘it’s almost an act of will on my part trying not to be an English writer’. However, this paper will suggest that the novel under consideration here exhibits methodological tendencies which have their roots in a protracted engagement with problematic notions of English identity (principally, instability and disengagement) and that postcolonial approaches to narrative technique can lead to very interesting results, even when applied to the work of writers not typically identified with such constituencies. The central point of investigation will be the novel’s exhibition of metafictional tendencies. In “London Fields”, Amis narrates via an authorial surrogate, Samson Young, who purports to be the author of the text, yet becomes implicated in the events of the novel to the point where his actions, rather than his imagination, determine its outcome. It is interesting also in this connection that the novel is voiced by an ‘outsider’ to England, an American.
Prince is intrigued by the possibility that a postcolonial narrative discourse might emerge ‘free of any narratorial introduction, mediation, or patronage.’ He also points to the significance of narratological features such as hybridity, migrancy, otherness, fragmentation, diversity and power relations. Amis’s novel exhibits all of these features, and takes the ambition of authorial invisibility to a paradoxical extreme. Voices, characters, reliability and even actantial events are brusquely ‘disowned’ by the author, resulting in a textual instability and uncertainty which, it will be demonstrated through close textual analysis, is intimately linked to England’s postcolonial condition
Improving Remote Teaching and Online Learning
No full textThis issue of the Journal of Open, Flexible and Distance Learning (JOFDL) contains an invited piece from a well-known author in the field. The intention is to include an invited piece in subsequent issues. This contribution from Rick Shearer focuses on theory in open, flexible, and distance education. The choice of topic is timely given the experiences of emergency remote teaching (ERT) by teachers and academics over the last 18 months, and the prevailing view that online learning and teaching and ERT are equivalent. In addition to the invited article, this issue has four articles—a descriptive piece and three articles from
presentations at the recent FLANZ 2021 Conference.fals
Tagging of Biomedical Articles on CiteULike: A Comparison of User, Author and Professional Indexing
No full textThis paper examines the context of online indexing from the viewpoint of three different groups: users, authors, and professional indexers. User tags, author keywords and descriptors were collected from academic journal articles, which were both indexed in Pubmed and tagged on CiteULike, and analysed. Descriptive statistics, informetric measures, and thesaural term comparison shows that there are important differences in the use of keywords between the three groups in addition to similarities which can be used to enhance support for search and browse. While tags and author keywords were found that matched descriptors exactly, other terms which did not match but provided important expansion to the indexing lexicon were found. These additional terms could be used to enhance support for searching and browsing in article databases as well as to provide invaluable data for entry vocabulary and emergent terminology for regular updates to indexing systems. Additionally, the study suggests that tags support organisation by association to task, projects and subject while making important connections to traditional systems which classify into subject categories
Electrically stimulated light-induced second-harmonic generation in glass: evidence of coherent photoconductivity
No full textA strong electrostatic field applied to glass is spatially modulated by intense light at frequencies ω and 2ω. The phenomenon is explained in terms of photoconductivity being dependent on the relative phase of the light fields at different frequencies
Light craft: creating unusual properties in glass with light
No full textGlass dominates modern optical technologies. Nonlinear optical processes, such as second-harmonic generation and parametric frequency conversion, are technological very attractive and require a second-order optical nonlinearity - a χ(2), which is normally absent in glass owing to its inversion symmetry. Thus, when light-induced frequency doubling was first discovered wide-ranging studies ensued into the mechanism and properties of this unexpected phenomenon. The mystery of self-organized χ(2) gratings was finally solved on the basis of a new physical phenomenon - the coherent photogalvanic effect, consisting in quantum interference between light fields at two different frequencies, ω and 2ω, which excites a phase dependent current (coherent photocurrent). Coherent photocurrent creates quasi-phase matching χ(2) gratings. Moreover in the experiments on electric-field second harmonic generation in optical fibres the first evidence of phase dependent modulation of a total cross-section of ionization due to quantum interference (coherent photoconductivity) in solid state materials has been obtained
Fundamentals of glass poling: from self-organization to electric-field poling
No full textOne decade has passed since the discovery of self-organized (photoinduced quasi-phase-matched) second-harmonic generation (SHG) in optical fibers. This discovery has attracted considerable interest world-wide due to the unusually strong χ(2) (second-order susceptibility) gratings induced purely by optical fields in glass (10 m/V, which were 4-5 orders of magnitude higher than one could explain by known physical processes). In 1991 the value of χ(2) has been increased to a new level of 1pm/V by thermal poling. In this paper we discuss fundamentals of glass poling, trying to answer the question: What is the limit of a second-order nonlinearity in glass
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