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A simple test setup has been developed at Institute of Aerospace Information Technology, University of Würzburg, Germany to realize basic functionalities for formation flight of quadrocopters. The test environment is planned to be utilized for developing and validating the algorithms for formation flying capability in real environment as well as for education purpose. An already existing test bed for single quadrocopter was extended with necessary inter-communication and distributed control mechanism to test the algorithms for formation flights in 2 degrees of freedom (roll / pitch). This study encompasses the domain of communication, control engineering and embedded systems programming. Bluetooth protocol has been used for inter-communication between two quadrocopters. A simple approach of PID control in combination with Kalman filter has been exploited. MATLAB Instrument Control Toolbox has been used for data display, plotting and analysis. Plots can be drawn in real-time and received information can also be stored in the form of files for later use and analysis. The test setup has been developed indigenously and at considerably low cost. Emphasis has been placed on simplicity to facilitate students learning process. Several lessons have been learnt during the course of development of this setup. Proposed setup is quite flexible that can be modified as per changing requirements.
Based on the results of a 3-day workshop at the Brown University (2012) this white paper tries to sum up important topics and problems which came up in the presentations and discussions and to outline some general aspects of data modeling in digital humanities. Starting with an attempt to define data modeling it introduces distinctions like curation-driven vs. research-driven for a more general description of data modeling. The second part discusses specific problems and challenges of data modeling in the Humanities, while the third part outlines practical aspects, like the creation of data models or their evaluation.
Zhao Ji (1082-1135), better known as Emperor Huizong (r. 1100-1126) of the Southern Song Dynasty (960-1127) gained a reputation as supreme perfectionist as artist, art collector and connoisseur, a ruler devoted to the faith of Daoism, squandering a fortune on building palaces and halls and on landscape gardening. A famous example of his costly ‘folie de grandeur’ is the Sacred Northeast Mountain Peak Genyue, a gigantic rock garden in the northeast part of the Old City of the capital Kaifeng. The garden is described in sources such as the Huayanggong jishi (Description of the Florescent Solitary Palace) by the Buddhist monk Zu Xiu from 1127 and Zhang Hao’s (ca. 1180-1250) Genyue ji (Record of the Northeast Marchmount). The project in search of auspicious blessing started in 1118, having originated in the emperor’s conviction that the Daoist Immortals would descend to this exquisite paradise situated in the centre of the world, his capital. In his conviction the landscape garden that exceeded nature’s beauty would prolong and glorify his rule for ten thousand years. The Genyue was completed in January 1123, and thus became part of Emperor Huizong’s Divine Empyrean Daoist ideology of statecraft. Contrary to all auspicious symbolism, the Song’s emblematic demonstrations of power, and the necessity to meet political expectations, Emperor Huizong proved incapable of finding a solution to the disastrous situation at the northern frontier with Jin troupes moving onto his capital. Completed in 1123 the Genyue Marchmount was destroyed in the cold winter of 1126/1127 by the inhabitants of Kaifeng in their desperate struggle for survival in their besieged town.
Despite the internet's dynamic and collaborative nature, scientists continue to produce grant proposals, lab notebooks, data files, conclusions etc. that stay in static formats or are not published online and therefore not always easily accessible to the interested public. Because of limited adoption of tools that seamlessly integrate all aspects of a research project (conception, data generation, data evaluation, peerreviewing and publishing of conclusions), much effort is later spent on reproducing or reformatting individual entities before they can be repurposed independently or as parts of articles.
We propose that workflows - performed both individually and collaboratively - could potentially become more efficient if all steps of the research cycle were coherently represented online and the underlying data were formatted, annotated and licensed for reuse. Such a system would accelerate the process of taking projects from conception to publication stages and allow for continuous updating of the data sets and their interpretation as well as their integration into other independent projects.
A major advantage of such work ows is the increased transparency, both with respect to the scientific process as to the contribution of each participant. The latter point is important from a perspective of motivation, as it enables the allocation of reputation, which creates incentives for scientists to contribute to projects. Such work ow platforms offering possibilities to fine-tune the accessibility of their content could gradually pave the path from the current static mode of research presentation into a more coherent practice of open science.
Es wird argumentiert, daß bei der Prüfung der Homgenität von Zentren in mehrfaktoriellen Multicenter-Studien vor allem entscheidend ist, daß sich die Zentren in den faktoriellen Variablen nicht unterscheiden, deren Effekte in der späteren Auswertung interpretiert werden sollen. Dazu wird folgendes Procedere vorgeschlagen: (1) überprüfe, ob in allen Zentren die Randomisierungsbedingungen eingehalten wurden, (2) überprüfe, ob die Zentren homogen bezogen auf die eingebrachten Schichtvariablen (z.B. Geschlecht, Indikation) sind und (3) überprüfe, ob die Zentren homogen sind bezogen auf die Wechselwirkungen zwischen den eingebrachten faktoriellen Variablen. Es wird gezeigt, daß vor allem Forderung (3) für die Interpretationsfähigkeit der Ergebnisse von entscheidender Bedeutung ist. Möglichkeiten der statistischen Prüfung dieser Voraussetzungen werden an einem Beispiel aus der klinischen Prüfung eines Psychopharmakons vorgestellt.
No abstract available.
K-Ar dating on hornblendes and micas from the TepläDomazlice zone revealed a pattern of dates which significantly deviates from the mid-Carboniferous to early Permian one that is found in the adjacent low-pressure metamorphic Moldanubian and Saxothuringian. Especially for the Mariänske Läzne metabasic complex, confirming early Czech determinations, the dates resemble the early Devonian pattern determined for the Münchberg Gneiss Massif and the Erbendorf-Vohenstrauß zone of northeastern Bavaria. This supports the idea that all three units are remnants of a huge complex which suffered a metamorphic overprint under medium-pressure conditions, probably in the early Devonian. Streng rejuvenation is found in the southern part of the Teplä-Domailice zone by which micas and even two hornblendes were reset to mid-Carboniferous ages. According to the geological setting, part of the apparently preDevonian dates may be explained by inherited argon from earlier metamorphic and magmatic events, e.g. the high-pressure metamorphism documented in eclogitic relics. However, excess argon, caused by the mid-Carboniferous overprint cannot be excluded.
Various amphibolites, metagabbros and eclogitic relics of the Mariänske Läzne complex, and amphibolites from the Cernä Hora Massif exhibit an uniform geochemical character which compares weil with modern mid-ocean ridge basalts. Geochemically these metabasites are similar to the amphibolites of the Myto area and to schistose, partly striped amphibolites of the neighbouring Tirschenreuth-Mähring Zone and the Erbendorf-Vohenstrauss Zone (Bavaria). Greenschists and amphibolites from the Domazlice metamorphic complex show an alkaline-basaltic tendency conforming to modern within-plate basalts or basalts from anomalaus midocean ridge segments. In their chemical character, these metabasites compare weil with the flaseramphibolites of the Erbendorf-Vohenstrauss Zone. Fine-grained amphibolites in the Warzenrieth area and (gabbro-) amphibolites in the Blätterberg-Hoher Bogen area show normal MORB character. The metamorphosed gabbroic rocks in the southern part of the Neukirchen-Kdyne (meta-) igneous complex are subalkaline - tholeiitic and exhibit a magmatic differentiation trend. They differ from the neighbouring amphibolites by generally lower contents of incompatible elements.