Die Arbeit befasst sich mit der Untersuchung des Kernformstofffließens als nichtnewtonsche Fluidströmung. Dazu werden verschiedene Formgrundstoffe und Kernformstoffe rheologisch untersucht. Als Bindersysteme kommen PUR Coldbox und Wasserglas zum Einsatz. Für diese Untersuchungen wird ein eigens für diesen Zweck entwickeltes Messgerät verwendet. Die gewonnenen Daten werden in ein numerisches Modell implementiert, welches mit den Methoden der numerischen Strömungsmechanik den Kernschießvorgang abbildet. Dabei kommt der Open Source CFD Code OpenFOAM zum Einsatz. Der Kernschießvorgang wird mit verschiedenen Kernkastengeometrien numerisch und experimentell untersucht und die Ergebnisse verglichen. Die Ergebnisse der rheologischen Untersuchungen zeigen deutlich den Einfluss der Beschaffenheit des Formgrundstoffes und des Bindersystems auf die Fließfähigkeit des Kernformstoffes. Der Vergleich zwischen Experiment und Simulation zeigt gute Übereinstimmung. Das formulierte Modell gibt die Möglichkeit, Probleme in der Kernqualität vorherzusagen.

Der Anteil der Schießleistung in Bezug auf die Komplexleistung gewinnt durch die Einführung neuer und kürzerer Wettkampfdisziplinen sowie durch die zunehmende Verdichtung der Weltspitzenleistung immer mehr an Bedeutung. Neben den allgemeinen Schießtechnikelementen Atmung, Abzug, Zielen und Anschlag sowie deren optimaler Koordination können Körperschwankungen und Anschlagsstabilität als wesentliche Einflussgrößen der Schießtechnik im Biathlon benannt werden. Zielstellung dieser Untersuchung war die Aufhellung des komplexen Beziehungsgeflechts der Schießtechnik in den Anschlagsarten Liegend und Stehend im Biathlon. Auf der Grundlage der sportartspezifischen Anforderungen des Biathlonschießens, wurden in beiden Anschlägen, in Abhängigkeit anthropometrischer Merkmale (z. B. Alter und Körpergröße) sowie in Abhängigkeit der Art der Vorbelastung, die Zusammenhänge zwischen der Anschlagsstabilität und der Anschlagsgestaltung, im Hinblick auf möglichst geringe Bewegungen der Laufmündung im Moment der Schussabgabe, als Voraussetzung für sichere Trefferergebnisse, analysiert. Zur Beantwortung der Forschungsfragen wurde ein komplexer Schießmessplatz eingesetzt, welcher die synchrone Erfassung und Analyse von Kraft-Zeit-Verläufen an den Kontaktstellen Sportler-Gewehr, Bewegungen an der Laufmündung, Schwankungen des Systems Sportler-Waffe, die Belastungsverteilung der Auflagepunkte auf der Unterstützungsfläche sowie Winkel und Winkelveränderungen der Anschlagsposition in der Schussvor- und Nachbereitung sowie im Verlauf einer kompletten Schussserie ermöglicht. Im Rahmen einer Evaluationsstudie konnten über einen Zeitraum von zwei Jahren eine Vielzahl von leistungsrelevanten Parametern identifiziert werden. Neben der Präzisierung des sporttechnischen Leitbildes konnten Norm- und Richtwerte als Orientierungsgrößen für den Techniktrainingsprozess abgeleitet werden. Auf der Basis der Erkenntnisse aus der Evaluationsstudie, ist es im Rahmen einer spezifischen Interventionsstudie gelungen, Möglichkeiten aufzuzeigen, eine Steigerung der Schießleistung durch Abbau entsprechender Leistungsdiskrepanzen zu erreichen.

The following report describes the conceptualization, pre-production, production and post-production of the film The Remnants of Civilization & The Dawn of Anxiety. It also contains the original film script and shooting schedule as supplemental material. / text

The purpose of this study was to investigate whether water protection areas with nearby shooting ranges could be polluted by lead from ammunition or not. The goal was to make a risk assessment of the hazard for human health and the environment. The risk assessment leads to a classification of the shooting ranges. The work of the inventory was done according to the method developed by the Swedish Environmental Protection Agency, called “Methodology for Inventory of Polluted Areas”. The report contains two types of studies: one literature study and one practical study where interviews were conducted along with a visit to one of the shooting ranges. The results show that one shooting range was considered to be of high risk to the environment because of the high activity that accumulated several tons of lead and the shooting range’s nearness to a water treatment plant. The other two shooting ranges were smaller and not too close to a drinking water source. Therefore the risks were moderate. Conclusions drawn from this report is that water protection areas within nearby shooting ranges are exposed to potential pollution from lead, but the risks aren’t immediate. Probably will time play an important role to prevent lead spreading to the ground water. Because of its attributes, lead has low mobility under normal conditions.  The vertical transport in the ground is considered slow and it could take hundreds of years before it reaches ground water.

The training of athletes is a multi-design process, where the physical, spiritual and intellectual powers of sports personalities and those seeking for sports results interact closely. The narrow and single-sided aspects of training process were mostly studied by the scientists, and revealed the contradictory results, which let manage the change of training to athletes only partially. With reference to the theory of athlete’s training and performance metamodel, using the diagnostic researches and a multi-design one alternative experiment were determined the training models of high performance shooters with training volume and intensity variation, interaction between training and sport performance. The created optimal models of high performance shooters’ can be optimal for junior age shooters as well. The educational mean of the dissertation consist of active shooters participation in the training, perfection of the sport performance, and education of the personality, training the self-education. The determined specific indices of the shooters’ training and the sport performance are defined by: 1) the reverse tough interaction of the inappropriate posture of the Lithuanian shooters (body mass center pathway pose with a gun and eyes open) and sports results (r = -0,95); 2) psychical fitness which is determined by not enough experience of international competitions (p < 0,001); 3) the determined 5 individual training and performance models of Lithuanian high performance shooters... [to full text]

Nightly surveys of the skies detect thousands of new gravitational microlensing events every year. With the increasing number of telescopes, and advancements of the tech- nologies used, the detection rate is growing. Of these events, those that display the characteristics of a binary lens are of particular interest. They require special atten- tion with follow-up observations if possible, as such events can lead to new planetary detections. To characterise a new planetary event, high-cadence, accurate observations are optimal. However, without the ability of repeat observations, identification that any event may be planetary needs to happen before it finishes. I have developed a system that automatically retrieves all microlensing survey data and follow-up observations, models the events as single lenses, and publishes the results live to a web site. With minimal human interaction, the modelling system is able to identify and initialize binary events, and perform a thorough search of the seven dimensional parameter space of a binary lens. These results are also presented live through the web site, enabling observers an up to date view of the latest binary solutions. The real-time modelling of the system enables a prompt analysis of ongoing events, providing observers with the information, to determine if further observations are desired for the modelled events. An archive of all modelled binary lens events is maintained and accessible through the website. To date the archive contains 68 unique events’ binary lens solutions from the 2014 observing season. The system developed has been validated through model comparisons of previously published work, and is in use during the current observing season. This year it has played a role in identifying new planetary candidate events, confirming proposed solutions, and providing alternate viable solutions to previously presented solutions.

This study examined the effects of training with real-time auditory feedback in precision shooting. Top-level shooters (N=9) were randomly assigned to the feedback or nonfeedback group. Each group performed a pre-test, a 4-week training intervention and a post-test. The feedback group was provided with augmented real-time auditory feedback based on postural and rifle barrel stability during training sessions. Increases in performance were measured through changes in postural stability, rifle barrel stability, shot outcome and shot group diameter. Real-time auditory feedback did not increase postural or rifle barrel stability in the feedback group. No meaningful differences were found related to shot outcome or shot group diameter in air rifle testing. The feedback group was able to reduce shot group diameter during smallbore testing. In summary, the augmented real-time auditory feedback did not improve postural or rifle barrel stability. Future research should focus on examining the effects of auditory feedback on smallbore performance.

Photojournalism captures moments within an event or space in time that are used to tell a larger story. Photographs are powerful tools for communication because these moments not only represent facts; they also have an ability to speak to viewers on a relatable and emotional level. With this power comes ethical responsibility and natural tension points between photograph, and journalistic practices. Journalism’s ethics codes group points of discussion specific to photographs into categories of manipulation, privacy, or graphic content. This thesis argues that these issues fall into broader overlapping themes of authenticity and sensitivity. Using visual analysis of four photographs from the Boston Marathon bombing and Newtown school shooting, it considers how journalists deal with the relationship between photography and journalistic theory using this ethical framework of authenticity and sensitivity. It concludes with a discussion of best practices for coverage of tragic events from the real-world perspective of the photojournalist.

No description available.

Statistics show that the number of mass shootings and involved fatalities have drastically increased over the last five years. The framing of these attacks in the mass media has a substantial impact on the public opinion on the causes of shootings, possible prevention methods and gun control in general. Following study aims to uncover potential ideological influences of political tendencies of liberal and conservative newspapers on the media coverage of the most recent mass shooting in the Marjory Stoneman Douglas High School in Parkland, Florida. A qualitative content analysis with a general structural analysis of 39 articles from the liberal newspaper The New York Times and the conservative newspaper The Washington Times and a more detailed Critical Discourse Analysis of the frames of blame, prevention methods and gun control were conducted. Findings show that The Washington Times´media coverage on blame attributions and prevention methods mainly included frames of mental health. The focus in The New York Times´ coverage is clearly on gun issues and the demand for gun restrictions. The topic gun control is positively framed by The New York Times. The Washington Times, however, framed gun control in connection with conspiracy theories and thus portrayed it in a more negative light. The findings prove an influence of the newspapers´ political tendencies and ideologies on the media coverage of the Florida mass shooting.