1,721,474 research outputs found
Bauer, Florian: Hard too hard, Christian Lauba
No full textKünstlerische Masterarbeit Saxophon
Lecture Recital vom 25.6.2015
Institut 4: Blas- und Schlaginstrumente
Ort: Florentinersaal, Palais Meran
Aufnahme: Philipp Hei
Bauer, Florian: Hard too hard, Christian Lauba
No full textGraz, Univ. für Musik und darstellende Kunst, Künstler. Masterarb., 201
Strategic agility, internationalisation speed and international success — The role of coordination mechanisms and growth modes
No full textThis study advances the debate on the global integration–local responsiveness imperative and theorises the contingency effects of vertical and horizontal coordination mechanisms to unfold the benefits of strategic agility and internationalisation speed. We offer a comprehensive picture arguing that strategic agility and internationalisation speed affect firms' growth mode choices in pursuit of internationalisation, and highlight the advantages and disadvantages of network-based and acquisitive growth modes that ultimately influence international success. Using data from British, German, Austrian, Swiss and Malaysian small and medium-sized firms, we find some surprising results. In contrast to prior studies, we find that strategic agility and internationalisation speed are inseparable in pursuit of international success. However, our study shows that while both are necessary, they are insufficient both alone and combined — they require different coordination mechanisms, namely strategic intent and horizontal coordination, and trigger different growth mode choices to internationalise. Combined, our findings suggest that firms need to orchestrate conflicting demands with respect to the dual global integration–local responsiveness imperative
Water- and heat transport in the thermal aquifersystem of Caldas Novas - Goiás, Brazil
No full textDie zentralbrasilianische Ortschaft Caldas Novas lebt vom Tourismus. Zahlreiche Thermalwasserbrunnen fördern Grundwasser mit Temperaturen zwischen 30 und 60 Grad C für die Schwimmbecken der Hotels. Die Bewirtschaftung des Grundwassers ist daher zentrales Anliegen für den Hotelbetrieb und eine nachhaltige Nutzung der Ressource ist Basis für ihren Fortbestand. Die vorliegende Arbeit quantifiziert hydrogeologische Kenngrößen der Region und schafft so ein grundlegendes hydrogeologischen Strukturmodell. Ein stationäres numerisches Strömungs- und Wärmetransportmodell gibt weiterführende Einblicke in das Grundwasserleitersystem und erstellt Szenarien. Das Grundwasserleitersystem von Caldas Novas besteht aus einem flachen ungespannten Grundwasserleiter, der durch Schiefer und Quarziten der Araxá-Gruppe mit hydraulischen Leitfähigkeiten um die 1·10-6 m/s gebildet wird. Der untere Bereich des Grundwasserleitersystems wird von den Paranoá-Quarziten gebildet, die kf-Werte um die 1·10-7 m/s haben. Im Bereich der Ortschaft von Caldas Novas erzeugte die kompressive Tektonik während der Brasiliano- Gebirgsbildung Strukturen, die im Untergrund der Stadt eine Wärmeanomalie hervorriefen. Maßgebliches Element sind die Scherklüfte in Richtung NE-SW, die die Serra de Caldas, das Neubildungsgebiet im Westen von Caldas Novas, mit dem Stadtgebiet verbindet und durch eine antiklinale Aufwölbung und Aufweitung der Bruchstrukturen heißes Grundwasser aus dem tiefen Grundwasserleiter in den oberen ungespannten Grundwasserleiter aufsteigen lässt. Die entscheidende Eingangsgröße für die Wasserbilanz des Gebietes ist die Grundwasserneubildung auf der Serra de Caldas, die auf Grundlage mehrerer Wetterstationen mit etwa 750 mm angenommen werden kann. Eine Berechnung der Evapotranspiration war nur mittels der thermodynamischen Energiebilanzformel nach Penman zufriedenstellend, Berechnungen nach Haude und Thornthwaite liefern eine zu große Abweichung. Das Abflussregime der Serra de Caldas wird durch die hohe Quellschüttung der Rio Quente-Quelle dominiert, die etwa 40% des Gesamtwasservolumens des Gebietes ausmacht. Die hohen Quellwassertemperaturen als auch das Schüttungsverhalten, das im Gegensatz zu den umliegenden kleineren Quellen an der Flanke der Serra de Caldas nicht trocken fällt, sondern kontinuierlich mit hohem Abfluss schüttet, zeugen von einer hohem Menge an Grundwasserfluss aus dem Thermalgrundwasserleiter. Die Wasserförderung an den Brunnen unterliegt im Araxá-Grundwasserleiter lateral großen Schwankungen in der Temperatur des Förderwassers. Die Nähe zu Trennflächen, die tiefes Thermalwasser fördern, aber auch die brekziösen Bereiche an der Basis des Grundwasserleiters erzeugen Wechselwirkungen zwischen Brunnen und Warmwasserverteilung. Pumpversuche konnten Bereiche erhöhter Transmissivitäten im Zentrum von Caldas Novas nachweisen. Das numerische Strömungs- und Transportmodell kann die gemessenen Wasserstände und Temperaturen nachbilden. Die Kalibrierung zeigte, dass die Kluftöffnungsweiten maßgeblich für den Wärmetransport sind. Sie wurden auf der Serra de Caldas mit 3 mm angenommen, in Caldas Novas sind sie etwa 1 mm groß. Die Abgrenzung des Einzugsgietes der Rio Quente-Quelle zu denen der Brunnen verläuft im östlichen Teil der Serra de Caldas entlang der Einzugsgebiete des Oberflächenwassers. Im Süden strömt das Grundwasser entgegen dem Oberflächenabfluss der Quelle zu. Eine Erhöhung der Fördermenge der Brunnen wirkt sich signifikant auf die Wasserspiegel in Caldas Novas aus. Ihre zusätzliche Absenkung kann bei 20% Steigerung der Fördermenge über 10 Meter betragen. Eine Umverteilung der Förderung vom Araxá- in den tieferen Paranoá-Grundwasserleiter führt in diesem ebenfalls zu Absenkungen um die 10 Meter, mit gleichzeitiger schwacher Aufhöhung im Araxá-Grundwasserleiter. Beide Szenarien haben eine Verminderung der Quellschüttung der Rio Quente-Quelle zur Folge. Die Auswirkungen eines trockeneren Klimas lassen sich nur auf der Serra de Caldas als signifikant beschreiben. Der Grundwasserspiegel sinkt um etwa 2 Meter und die die Quellschüttung sinkt um 10 l/s.The area of Caldas Novas, located in central Brazil, is famous for its hot springs and wells, which feed the pools of the hotels with high-tempered groundwater. The use of this water which has temperatures of about 30 to 60 degree C is an important issue concerning the sustainable use of the resource. Subject of the thesis is a quantification of hydraulic properties as well as relevant climatic conditions to create a hydrogeological model of the region. On the basis of this model a numerical flow- and heat transport model was built. Output of this model are a better understanding of the flow and energy regime of the underground. Additionally, scenarios were conducted to determine risks and changing climate conditions. The aquifer system of Caldas Novas consists of two aquifers: the upper unconfined Araxá schists and quartzites and the lower confined quartzites of the Paranoá group. Hydraulic conductivities of about 1·10-6 m/s for the upper and 1·10-7 m/s for the lower aquifer were calculated. The underground structures of the village of Caldas Novas is a result of tectonics with a compressive regime forming the heat anomaly along shear-related fissures and fractures. The most important direction for water transport is NE-SW, connecting the recharge area of the Serra de Caldas with the hot waters in Caldas Novas. At this place an anticline up-welling of the lithology an opening of tectonic structures let hot water move from high depths to the unconfined upper aquifer. Groundwater recharge on the top of the Serra de Caldas plateau can be calculated with data from weather stations and gives values about 750 mm/a. Calculations of the evapotranspiration is only reasonable with Penman’s relation, simpler estimations with Thornthwaite and Haude equations result in high discrepancies to the thermodynamic Penman relation. The discharge of surface water from the Serra de Caldas is dominated by the high discharge rate of the Rio Quente Spring, covering about 40% of the overall amount of water. The high temperatures of the spring water as well as the discharge behaviour which do not vary as much over time as the surrounding springs are caused by a high impact of groundwater which discharges from the deeper thermal aquifer. Temperatures in the water of the pumping wells show a high grade of spatial variability. Close to fissures the water is heated up more intensely than in their surroundings. At the bottom of the Araxá aquifer brecciated strata let the up-streaming water spread and the areas of high temperatures are widely distributed. Areas of high transmissivity are proved by pumping tests. Numerical modeling of flow and heat transport can recreate the watertable and the temperatures of the groundwater. The calibration of the model showed a high dependency of the heat transport and the thickness of fractures. At the place of the Serra de Caldas their width is about 3 mm, in Caldas Novas they are much thinner with a thickness about 1 mm. As a result of the modeling the catchment of the Rio Quente Spring and the inner-city wells can be determined. In the northern part of the Serra it follows the surface water catchments, more to the south the water returns to the north and discharge at the Rio Quente spring contrary to the flow direction of the surface water. An increase of the pumping rates of the wells will have significant influence on the watertable in Caldas Novas. An additional drawdown of more than 10 meters can be calculated with an increase of the wells’ discharge of 20%. The option to keep the overall pumping rate constant but shift more discharge to the deeper Paranoá aquifer will result in high drawdowns of its watertable up to 10 meters, the watertable in the Araxá aquifer will only increase about 1 meter. Both scenarios have the effect of lowering the discharge at the Rio Quente Spring. Dryer climate conditions will have significant effects on the Serra de Caldas water table which will be lowered by up to 2 meters. Also, a reduction of 10 l/s of the springs discharge will take place
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
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