1,721,003 research outputs found
Anwendung einer 10 cm Innendämmung an historischer Bausubstanz - Von der Idee zur Umsetzung
No full textAusgehend vom Wunsch der Bauherrschaft eine Lösung für eine thermische Sanierung bezüglich der schützenswerten Außenfassade zu finden wurde eine Innendämmung konzeptioniert. Der Beitrag beinhaltet die Beschreibung der Anwendung der Innendämmung aus Calciumsilikat mit einer Stärke von 10 cm. Um ein eventuell vorhandenes Risiko zu minimieren, wurden im Vorfeld Simulationsrechnungen für kritische Punkte durchgeführt. Die Ergebnisse zeigen, daß bei ordnungsgemäßer Anwendung keine Probleme zu erwarten sind. Entsprechende konkrete Fragestellungen werden beantwortet. Folgend wird über den Einbau der Innendämmung und die begleitende Meßtechnik berichtet.Starting out from the wish to obtain the exterior facade as it is but to improve the performance of the thermal envelope an inside thermal insulation was conceived. The paper describes the application of the inside insulation made of calcium silicate with a strength of 10 cm. It becomes the corresponding building to receive a solution for the worth protecting exterior facade starting out from the wish of the making power introduced. To minimise a possible risk simulations were carried out for critical points. The results show that at a proper application no problems have to be expected. At last the installation of the inside insulation and the accompanying measuring technique are reported
Tropfenkonturanalyse als Hilfsmittel zur Beurteilung der Wirksamkeit von Sanierungsmaßnahmen - Anwendungen im Bauwesen
No full textUm der schädigenden Wirkung von Wasser und im Wasser transportierter Stoffe entgegenzuwirken werden im Bauwesen meist Sanierungsmaßnahmen angewandt, wo Wirkstoffe auf wasserabweisender oder porenverstopfender Basis auf bzw. in den Baustoff gebracht werden. Beispielhaft seien hier Maßnahmen zur Horizontalabdichtung, Hydrophobierungen und Behandlungen von Oberflächen genannt.
Der Widerstand gegenüber Wasserbeanspruchung wird durch Materialeigenschaften, wie Wassergehalt, Wasseraufnahmefähigkeit, Diffusionswiderstand, Hygroskopie und ähnliches beurteilt.
Ergänzend zu den gebräuchlichen Beurteilungsmethoden wird in dieser Arbeit die Tropfenkonturanalyse zur Bestimmung von Materialeigenschaften eingesetzt. Die gewonnenen Messgrößen sind Kontaktwinkel, Kontaktwinkelabfall, Oberflächenspannung und Benetzbarkeit.
Aussagekraft, Anwendbarkeit, Möglichkeiten und Bedeutung der Tropfenkonturanalyse für das Bauwesen soll durch diese Arbeit beurteilt werden.To counter the hurtful impact of water and solutes in building sector refurbishments are used which are based on substances whose dilution is applied on the surface of building material. Refurbishments can be carried out with an additional horizontal moisture barrier, hydrophobic treatments and coatings of surfaces.
The resistance against water load is evaluated by material properties like moisture content, water absorption, diffusion resistance, deliquescence and so forth.
Additional to the common evaluation methods in this work drop shape analysis is used to assess water resistance of building material. The obtained values are contact angle, decrease of contact angle by time, surface tension and wettability. The aim of this work is to evaluate the significance, practicability, possibilities and meaning of drop shape analysis in building sector
Analysis of the crystalline coat waterproofing effect
No full textWaterproofing crystalline coats are the cement based materials applied on the concrete structure surface. The crystalline coat application causes a creation of a new crystal structure in the depth in concrete by chemical reaction, which results in waterproofing effect. Concrete which is destined for the coating can be older which is useful for rehabilitation of old buildings. The experience with these materials in practice are good, but the depth of coat waterproofing effect and another properties of this system was not adequate described so far. This paper describes the experimental detection of the crystalline coat properties
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
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