1,720,984 research outputs found
IRM Quarterly, Volume 28, Number 3 (Fall 2018). Cover article: Commonly used experimental parameters for acquisition of anhysteretic remanent magnetization (ARM) and its anisotropy (AARM): Results and recommendations from a rock magnetic community survey
No full text1 electronic resource (PDF)Biedermann, Andrea; Bilardello, Dario; Jackson, Mike; Chadima, Martin; Feinberg, Joshua. (2018). IRM Quarterly, Volume 28, Number 3 (Fall 2018). Cover article: Commonly used experimental parameters for acquisition of anhysteretic remanent magnetization (ARM) and its anisotropy (AARM): Results and recommendations from a rock magnetic community survey. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/200745
Mineral magnetism and palaeoenvironment recorded in loess in southern England
Get PDFExtensive research has focused on the loess deposits in southern England, aiming to unravel their stratigraphic and palaeoenvironmental significance. However, no systematic mineral magnetic study on these deposits has yet been undertaken. Here we address this by investigating the magnetic mineral composition and alignment of loess at two sites in southern England, Lowland Point (LP) on the Lizard Peninsula of Cornwall, and Pegwell Bay (PB) in eastern Kent on the Isle of Thanet. A set of rock magnetic analyses was conducted to understand mineral magnetism within the studied sections. In addition, the primary depositional origin of the magnetic fabrics as well as their overprinting caused by various possible post-depositional processes were examined through anisotropy of magnetic susceptibility (AMS). The magnetic mineral composition is similar at both sites, derived from both sedimentary (aeolian) and post-depositional processes. The AMS results show magnetic foliation that varies between the two sites, aligning with the bedding plane, indicating deposition from gravitational dust fall at the PB site, and a stronger wind transport energy at the LP site. Although the magnetic lineation of bulk AMS is relatively weak, there is a noticeable tendency towards alignment in most samples, with flow directions from the SE indicated at both sections if a strong wind is assumed at LP, although with a possible SW direction if a weaker wind is assumed. These observations may imply the preservation of palaeowind directions during dust transport, with a substantial southerly component, which contradicts previous assertions of dominant northerly or northeasterly winds. Indeed, a possible dominant southeasterly wind direction between 25 and 18 ka would suggest a limited influence of katabatic, westerly or polar northeasterly winds during dust transport, and rather may imply the effect of low-pressure systems passing through the English Channel during that period
Reworking the monolithic structure into a prefabricated sandwich panel system
No full textAutor se v práci soustředí na přepracování návrhu bytového domu z monolitické stavby na prefabrikovanou. Bytový dům, který je v práci uváděn, by měl po dokončení splňovat nároky pro pasivní budovu. Hlavním tématem autora je tvarový návrh prefabrikované konstrukce a výběr prvků a spojovacích materiálů, které by měly být použity pro výstavbu budovy. V práci autor navrhuje především sendvičové panely, které tvoří obvodový plášť budovy, tyto panely budou už ve výrobně spojeny s tepelnou izolací a jejich výsledná skladba musí splňovat pasivní požadavky. Jako izolace bude použit výrobek firmy Izopol Dvořák, s.r.o., která zároveň autorovi poskytla základní výkresovou dokumentaci monolitického bytového domu, který bude autor přepracovávat. Základním kritériem pro autora je minimalizace betonáží a pokud to bude možné, tak eliminace použití bednění a armovaní přímo na staveništi. Cílem práce je navrhnout základní modulové řady prefabrikovaných panelů, jejich spojení, jak mezi sebou, tak s ostatními, především vodorovnými konstrukcemi, které budou taktéž předběžně navrženy. Statický výpočet není součástí práce, bude proveden jako jeden z dalších kroků.The author concentrates on a project redrafting of an apartment building from a monolithic construction to a prefabricated building. After it is finished the apartment building in this thesis should meet the passive building requirements. The main subject matter of this thesis is such a prefabricated construction design and selection of elements and connecting material that should be used for building construction. The author proposes mainly sandwich panels used for forming a circumferential casing of a building. These panels are attached to a thermal insulation during the production and their final composition has to meet passive requirements. A product of Izopol Dvořák, s.r.o., company will be used as insulation. The company provided the author with a basic drafting documentation of a monolithic apartment building which the author will redraft as well. The basic criteria are concreting minimization and elimination of the need of formwork and reinforcement directly on site. The goal of the thesis is a design of a basic modular range of prefabricated panels, their joining, especially through horizontal constructions which will also be proposed. Static design and assessment is not a part of the thesis and will be carried out consequently
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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