85 results on '"Michael Wendler"'
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52. Key Aspects of German Business Law : A Manual for Practical Orientation
- Author
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Michael Wendler, Bernd Tremml, Bernard Buecker, Michael Wendler, Bernd Tremml, and Bernard Buecker
- Subjects
- Commercial law
- Abstract
A clear and precise overview of the key aspects of German business law. Written by attorneys involved in the daily practice of business law in Germany, this book is aimed at people who wish to familiarise themselves quickly with the German legal system and the manner in which it influences business purchases, establishment, operations and liquidations. Throughout, special attention has been paid to highlighting and explaining the differences between the German legal system and that of the United States, although the intention is to provide information that will prove valuable to all foreigners, particularly business people and lawyers advising clients with an interest in doing business in Germany.
- Published
- 2013
53. Key Aspects of German Business Law : A Practical Manual
- Author
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Michael Wendler, Bernd Tremml, Bernard John Buecker, Michael Wendler, Bernd Tremml, and Bernard John Buecker
- Subjects
- Commercial law, Economics, Management
- Abstract
This book presents a clear and precise overview of the key aspects of German business law. It was written by attorneys involved in the daily practice of business law in Germany and is aimed at people who wish to orient themselves quickly in which it impacts business pur with the German legal system and the manner chases, establishment, operations and liquidations. The first section of the book is devoted to an explanation of the major issues to be considered in acquiring or establishing a business in Germany, whereas the second section focuses on areas of special consideration. In both sections special attention has been paid to highlighting and explaining the differences between the German legal system and that of the United States, though the intention is to pro vide information that will prove valuable to all foreigners, particularly business men and women and lawyers advising clients with an interest in doing business in Germany. Though it is the object of this book to present readers with a general orientation and the foundation for making informed decisions concerning business transac tions in Germany, it cannot possibly function as a substitute for case-specific pro fessional advice and by no means purpmts to do so. Those readers who wish to follow up on any decisions they may have formed on the basis of the material presented here are well advised to seek the guidance of qualified attorneys and tax advisors before entering into any bindin;>: obligations.
- Published
- 2013
54. Körper(lichkeit) in unterschiedlichen Fachdiskursen – ein Desiderat
- Author
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Michael Wendler
- Abstract
Korper, Seele und Geist bilden eine untrennbare Einheit und drucken sich als bewusste und unbewusste Befindlichkeiten immer in unserem Korper aus: in der Haltung und Bewegung, in Mimik und Gestik, in Atem und Stimme, in korperlichen Symptomen und Krankheiten und in dem jeweiligen Erscheinungsbild des Individuums. Wie die eigene Korperlichkeit erlebt wird, bestimmt in hohem Mase unsere Identitat und unser Selbstwertgefuhl. Die korperliche Erscheinung ist zudem das, was andere Menschen von uns am unmittelbarsten erleben (Muller und Knull, 1998 S. 137). So steht der Korper immer – physisch wie psychisch – an der Nahtstelle zwischen Person und Umwelt (Fischer 2009, S. 128). Psychisches Erleben findet demnach seinen Niederschlag auch im auserlichen Korpergeschehen (Storch 2006, S. 37). Aktuelle Konzepte, wie etwa „Embodiment“ versuchen, ein neues Verstandnis von Entwicklung auf der Basis des Korpers zu entwerfen, in denen es darum geht, die Wechselwirkung von Korper, Kognition und Psyche zu verstehen und fur Entwicklungsprozesse zu nutzen (ebda.).
- Published
- 2015
- Full Text
- View/download PDF
55. Der Körper als Ressource der Sozialen Arbeit
- Author
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Ernst-Ulrich Huster and Michael Wendler
- Abstract
Spatestens seit Beginn der 1980er Jahre hat die Auseinandersetzung mit dem Korper in der Bundesrepublik als wissenschaftliches Thema eine grose Ausstrahlungskraft entwickelt und inzwischen nicht nur zahlreiche geistes-, kultur- und sozialwissenschaftliche Disziplinen erreicht, sondern auch inhaltlich um korperbezogene Themen und Auseinandersetzungen bereichert. Innerhalb der Geisteswissenschaften wird die nachfolgende Epoche als das „Korperjahrzehnt“ angesehen.
- Published
- 2015
- Full Text
- View/download PDF
56. Zirzensische Künste als Ressourcenstärkung für sozial ängstliche Kinder
- Author
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Michael Wendler and Melanie Behrens
- Abstract
In dem Beitrag wird dargestellt, wie Inhalte des Zirkusgeschehens als Ressourcen dem angstlichen Kind helfen, Risikolagen seiner Entwicklung zu bewaltigen. Dabei wird aufgezeigt, welche Chancen korper- und bewegungsorientiertes Arbeiten bietet, um personale, soziale und motorisch-korperliche Ressourcen zu starken. Gerade fur sozial angstliche Kinder stellt der Aufbau eines positiven Selbstwertgefuhls eine wichtige Zielsetzung im Prozess der Entwicklungsbegleitung dar. Uber ein erhohtes Mas an Selbstwirksamkeit(serfahrungen) kann dem Kind ein spielerischer und an Bewegung orientierter Rahmen geboten werden, in dem es sich selbst wirksam als Verursacher des Geschehens erleben kann, um kunftig nicht alleinig die als subjektiv wahrgenommenen Misserfolge internal zu attribuieren.
- Published
- 2015
- Full Text
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57. Embodied Action: Lernen mit dem ganzen Körper
- Author
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Michael Wendler
- Subjects
03 medical and health sciences ,0302 clinical medicine ,Philosophy ,030211 gastroenterology & hepatology ,Embodied learning ,030230 surgery ,Humanities - Abstract
Denkprozesse entstehen nicht unabhangig von korperlichen und sensomotorischen Funktionen, von der Sprache, der Wahrnehmung und der Vorstellungskraft. Konkret handelt es sich vielmehr um ein unteilbares System dynamischer Wechselbeziehungen, dessen Faktoren sich nur theoretisch voneinander isolieren lassen. Die Bedeutung des Korpers geht dabei weit uber die physischen korperlichen Strukturen hinaus: »Embodied Action« ist vor allem gelebte Erfahrung, die sich aktiv mit der Welt soziokultureller und physikalischer Objekte verbindet. Der Begriff »Action« beinhaltet in dieser Sichtweise, dass sensorische und motorische Prozesse, Wahrnehmungen und Handlungen grundsatzlich untrennbar sind.
- Published
- 2017
- Full Text
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58. Implementation of CCSDS Mission Operations Services at the German Space Operations Center
- Author
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Michael Wendler, Jens Hartung, and Stefan Gärtner
- Subjects
standardization ,Engineering ,Spacecraft ,service-oriented architecture ,Network packet ,business.industry ,monitoring and control ,Interoperability ,satellite ,mission operations ,Context (language use) ,Space (commercial competition) ,Computer security ,computer.software_genre ,Missionsbetrieb ,Abstraction layer ,Systems engineering ,Architecture ,business ,space packet protocol ,computer ,Protocol (object-oriented programming) - Abstract
The CCSDS Mission Operations framework defined by the CCSDS Spacecraft Monitor & Control working group aims to provide a reusable, interoperable and distributed mission operations system based on a service-oriented architecture paradigm. Services are defined in terms of an abstract model called the “Message Abstraction Layer”, which is cast to a concrete technology by separately defined bindings. This work is concerned with prototype implementation of binding to the Space Packet Protocol. Challenges and solutions are outlined as well as next steps in terms of testing to prove interoperability. A second prototype implementing a core set of services – the Monitor and Control services – is discussed briefly, as well as a possible way of transition towards a Mission Operations framework based infrastructure at the German Space Operations Center GSOC. The work is put into context by pointing out how benefits for missions arise from the framework and its design.
- Published
- 2014
59. Students' and general practitioners' perceptions of a recently introduced clerkship in general practice. A survey from Austria
- Author
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Julia Baumgartner, Michael Wendler, Florian L Stigler, Martin Sprenger, Helmut J. F. Salzer, and Adrian M. Moser
- Subjects
Adult ,Male ,medicine.medical_specialty ,Students, Medical ,Attitude of Health Personnel ,Cross-sectional study ,media_common.quotation_subject ,Decision Making ,General Practice ,Young Adult ,General Practitioners ,Surveys and Questionnaires ,Recall bias ,Perception ,Humans ,Medicine ,Curriculum ,Accreditation ,media_common ,Medical education ,business.industry ,Clinical Clerkship ,Cross-Sectional Studies ,Austria ,Family medicine ,General practice ,Medical training ,Female ,Family Practice ,business - Abstract
In autumn 2007, the Medical University of Graz (MUG) upgraded the status of general practice in medical training by integrating a compulsory five-week clerkship in general practice surgeries in the sixth and last year of the curriculum. In cooperation with the Styrian Academy of General Practice (STAFAM), more than 200 general practitioners (GPs) had been accredited to introduce medical students to the specific tasks, problems and decision-making process in general practice. Between October 2007 and June 2009, more than 300 students completed the clerkship.To explore the perceptions of students and GPs towards this new approach to undergraduate teaching in Austrian general practice.Between March and June 2009, we conducted a cross-sectional survey by using a self-administered questionnaire with 14 items for students as well as GPs. To limit recall bias, we gave the questionnaire to all students (n = 146) and GPs (n = 146) immediately after the clerkship. The response rates were 146/146 (100%) and 114/146 (78%) for students and GPs, respectively.The study results show high satisfaction rates among students as well as GPs. Most of the students and GPs perceive the compulsory clerkship in general practice as an essential part of medical education. The organization of the clerkship had the least positive outcome.Our survey shows that the clerkship is well accepted among Austrian medical students and GPs.
- Published
- 2010
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60. 'Wald statt Ritalin?': Ein nichtmedikamentöser Förderansatz für Kinder mit ADHS zur Teilhabe am Unterricht in der Offenen Ganztagsschule
- Author
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Michael Wendler and Ursula Henke
- Abstract
Schatzungen gehen davon aus, dass z. Z. 4,9 % aller Kinder und Jugendlichen in der Bundesrepublik Deutschland ein diagnostiziertes Hyperaktivitatsproblem haben (Schlack et al 2007). Die Pravalenzrate ist insbesondere bei Kindern mit einem niedrigen soziookonomischen Status und dann wiederum bei Jungen erhoht (Schlack et al. 2007, S. 788; Dopfner et al. 2008). Nur selten erreicht ein Kind mit ADHS den gleichen schulischen Abschluss wie ein vergleichbar intelligentes gesundes Kind und haufig wird gar kein Schulabschluss erreicht (Harpin 2005). Insbesondere mit Eintritt in die Schule fallen die Unfahigkeit zur selektiven und kontinuierlichen Aufmerksamkeit und eine grose Ablenkbarkeit auf (Barkley 1998). Circa 60 % der betroffenen Kinder weisen eine Lese-Rechtschreibschwache und/oder isolierte Dyskalkulie auf (Thapar et al. 2005). Bei 30 % der erkrankten Kinder liegen aggressive oder dissoziale Storungen vor (Dopfner et al. 2008).
- Published
- 2012
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61. Bewegung und Körperlichkeit als Risiko und Chance
- Author
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Michael Wendler
- Abstract
Bewegungshandeln wird als Verwirklichungsmoglichkeit der kindlichen Personlichkeit angesehen. Handeln schliest immer die korperliche Bewegung mit ein. Im Bewegungshandeln lernt das Kind seinen Korper kennen, mit ihm umzugehen, ihn einzusetzen und auf die Umwelt einzuwirken. Die Orientierung am eigenen Korper ist die Basis jeder Orientierung in Raum und Zeit (Sozialraum, Zahlenraum, Schriftraum), zugleich ist der Korper Spiegel psychischen Erlebens; uber seinen Korper erlebt das Kind seine Befindlichkeit und bringt seine Gefuhle und Bedurfnisse zum Ausdruck. In diesem Prozess will das Kind wissen, wer und was es ist und wer und was es werden will. Das Selbstkonzept wird dabei zum Schlusselbegriff, vor allem deshalb, weil das Korperkonzept ein wichtiges Teilkonzept des Selbstkonzepts darstellt.
- Published
- 2012
- Full Text
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62. A New Offline Data Processing System for TanDEM-X and TerraSAR-X Mission
- Author
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Heinz Wacker, Michael Staub, Michael Wendler, and Alexander Brandt
- Subjects
Engineering ,Data processing ,MOPS TanDEM-X TerraSAR-X ,Data stream mining ,business.industry ,Real-time computing ,Process (computing) ,Raumflugbetrieb und Astronautentraining ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Leap second ,computer.software_genre ,Offline data processing system Virtual Machines Distributed Computing ,Data processing system ,Software ,Data access ,Virtual machine ,GSOC-Deutsches Raumfahrtkontrollzentrum ,business ,computer - Abstract
The German radar imaging spacecraft TerraSAR-X was launched in June 2007. It is operated from the German Space Operations Center (GSOC) in Oberpfaffenhofen. The mission has a partly commercial character and very high orbit-control requirements. Very fast access into the downloaded house-keeping data is required in order to fully judge the health and correct status of the spacecraft, but also for calibration purposes of the acquired image products. To be able to react to a potential anomaly the operations engineers need to have full access to the offline data within 40 minutes after the dump, since the next pass is often after only 80 minutes. Since up to 11 hours of data can be accumulated in a single dump, this poses a high demand on the offline system performance. With the new TanDEM-X spacecraft which will be launched in October 2009, the requirements for high-performant offline data processing and fast data access are even higher. It turned out that the original offline processing system development met the performance requirements well, but had other drawbacks in computing accuracy, configurability and maintenance. Thus it was decided to refine the requirement definitions and re-develop the offline data processing system. The system presented runs as one control process including graphical GUI to survey the processing. The operation is completely encapsuled in virtual machines; thus the specific configuration needs only once to be configured and can then be saved in a dedicated virtual machine. It is thus also possible to move the software to other hardware or operation system. The natively supported platforms are WinXP and Linux (up to SLES10). Distibuted computing is possible via a control process. The processing is straight forward, i.e. all products are generated based on a generic product format which is highly configurable by content, name etc. Various processor configurations are possible, actually one to four data processors supported to use QuadCore platforms are the optimum. Direct demultiplexing of input data streams is possible (e.g. VCs, SPIDs, APIDs...). Native leap second handling is possible via database, that means leap seconds need only once to be configured and the system allows easy reprocessing of old data without the necessity to change configuration for leap seconds. Further there is no necessity to split data which span over leap second jumps.
- Published
- 2010
63. Developing a Fast and Flexible Offline Telemetry Processing System
- Author
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Heinz Wacker, Michael Wendler, and Michael Schmidhuber
- Subjects
Data processing ,Spacecraft ,Computer science ,business.industry ,Offline ,Real-time computing ,Cluster (spacecraft) ,Data processing system ,Moment (mathematics) ,Embedded system ,Telemetry ,Relevance (information retrieval) ,Completeness (statistics) ,business - Abstract
In future spacecraft systems, it is of vital relevance that the downloaded house-keeping data can be accessed very fast as almost all subsystem engineers rely on these data. For this purpose a fast and flexible offline telemetry processing system is being developed. The experience gained with the current TerraSAR-X offline processing system showed that the performance of this system is not sufficient to fulfill all tasks satisfactory. One aspect, the processing time, can be overcome by distributing several processing tasks on a cluster of processing machines. But still there are gaps in the processed data which lead to a huge amount of manual interaction into the data process. As for the follow-on project TanDEM-X a solution is highly desirable, a completely new offline data processing system is developed in the moment. This processing system is much more powerful than the existing system in terms of processing time. Also the product completeness problems encountered in TerraSAR-X will be eliminated by a new way of treating the incoming data. This paper describes the new offline processing system in basics.
- Published
- 2008
- Full Text
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64. Surface finishing effect on biaxial strength of CAD/CAM materials
- Author
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Y. Tran-Vinh, Renan Belli, Anselm Petschelt, Michael Wendler, Ulrich Lohbauer, and J. Polster
- Subjects
Materials science ,Mechanics of Materials ,General Materials Science ,CAD ,Composite material ,General Dentistry ,Surface finishing - Published
- 2016
- Full Text
- View/download PDF
65. Residence and work permit
- Author
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Michael Wendler and Sebastian Maiß
- Subjects
German ,Foreign worker ,Law ,Political science ,Work permit ,language ,Context (language use) ,Residence ,Meaning (existential) ,Foreign national ,language.human_language ,Term (time) - Abstract
The most important source of the German laws pertaining to residency issues is the Aliens Act [“Auslandergesetz” (AuslG)]. This legal code addresses two types of residency: permanent and temporary. Throughout this chapter, the term “residency” will be used to refer alternately to permanent or temporary stays in Germany. Its exact meaning can be derived from the context.
- Published
- 2006
- Full Text
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66. Subcritical crack growth in porcelain-zirconia bilayer: an unbonded model
- Author
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Renan Belli, Ulrich Lohbauer, José Zorzin, Michael Wendler, and Anselm Petschelt
- Subjects
Materials science ,Mechanics of Materials ,business.industry ,Bilayer ,General Materials Science ,Cubic zirconia ,Structural engineering ,Composite material ,business ,General Dentistry - Published
- 2014
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67. Characterization of thermal residual stresses in zirconia veneered bilayers
- Author
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Anselm Petschelt, Renan Belli, Ulrich Lohbauer, and Michael Wendler
- Subjects
Materials science ,Mechanics of Materials ,Thermal residual stress ,General Materials Science ,Cubic zirconia ,Composite material ,General Dentistry ,Characterization (materials science) - Published
- 2014
- Full Text
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68. Azimuth-invariant, bistatic airborne SAR processing strategies based on monostatic algorithms
- Author
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Gerhard Krieger, Marc Rodriguez-Cassola, and Michael Wendler
- Subjects
Synthetic aperture radar ,Bistatic SAR ,Computer science ,Context (language use) ,airborne SAR processing ,bistatic motion compensation ,Azimuth ,symbols.namesake ,Bistatic radar ,bistatic SAR processing ,symbols ,Chirp ,Point (geometry) ,Radar remote sensing ,Doppler effect ,Algorithm ,Remote sensing - Abstract
Bistatic configurations have awakened a great deal of interest in the recent past among the SAR research community for both airborne and spaceborne sensing. However, bistatic SAR campaigns remain a technical challenge. In this context, current experiments are helping to understand real engineering problems concerning bistatic SAR data acquisitions. In February 2003, DLR and ONERA carried out successfully [1] one of the very first bistatic airborne campaigns. The E-SAR and RAMSES systems were flown in two basic geometrical configurations, both involving parallel flights at the same speed: one defined by along-track acquisitions and the other by across-track acquisitions. These bistatic configurations share with monostatic SAR the invariancy in the along-track dimension, which allows and suggests the using of Doppler domain focussing techniques. This paper puts forward an extension of airborne SAR monostatic focussing algorithms to the azimuth-invariant, bistatic case. A derivation of the point response in range-Doppler domain is presented; the differences between azimuth-invariant, bistatic and monostatic point responses are outlined. Using these results, bistatic focussing solutions based on range-Doppler (RD) [2] and extended chirp scaling (ECS) [3] algorithms are analysed. Particular implementation problems, like Doppler parameter estimation and bistatic motion compensation [4] strategies are also presented. Finally, the algorithms are tested with real data from the DLR-ONERA bistatic airborne campaign.
- Published
- 2005
- Full Text
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69. A first bistatic airborne SAR interferometry experiment preliminary results
- Author
-
Michael Wendler, P. Dubois-Fernandez, H. Cantalloube, V. Giroux, and Ralf Horn
- Subjects
Synthetic aperture radar ,Interferometry ,Bistatic radar ,Radar cross-section ,Radar tracker ,Computer science ,Local oscillator ,Moving target indication ,Remote sensing ,Passive radar - Abstract
Here are described the first successes in obtaining bistatic cross-platform interferograms from a two aircraft SAR acquisition campaign performed in February 2003 by the DLR and ONERA using their E-SAR and RAMSES facilities. The main challenging issues in the signal processing involved are the estimation and compensation of phase drift between the two radars master oscillators (bistatic receive signal is demodulated with a local oscillator which is not coherent with the transmitter one) and the determination of the relative aircraft trajectories -i.e. interferometric baseline-accurate to the millimetre (X-band wavelength is 3 cm, hence 1 mm error in relative position shifts the phase by about 10/spl deg/). The high phase quality of the first interferograms obtained is encouraging, but also shows that full endo-clutter moving target indication capability in multistatic environment requires at least two passive SAR receivers in the vicinity of the transmitting active SAR system.
- Published
- 2005
- Full Text
- View/download PDF
70. Sector Imaging Radar for Enhanced Vision
- Author
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Franz Witte, Michael Wendler, Stefan Buckreuss, Josef Mittermayer, Thomas Sutor, Gerhard Krieger, and Alberto Moreira
- Subjects
Image formation ,Synthetic aperture radar ,Pulse-Doppler radar ,Computer science ,business.industry ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Aerospace Engineering ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Fire-control radar ,Situation Awareness ,Near Field Digital Beamforming ,Inverse synthetic aperture radar ,Man-portable radar ,Radar engineering details ,Radar imaging ,Enhanced Vision ,Computer vision ,Artificial intelligence ,Forward Looking Radar ,business ,Remote sensing ,SAR - Abstract
SIREV (Sector Imaging Radar for Enhanced Vision) is an innovative airborne radar system which can supply high-quality images in any desired direction under almost every weather condition. In contrast to synthetic aperture radar (SAR) systems, no relative motion between sensor and targets is required in SIREV. The high frame repetition frequency in SIREV allows to detect even very rapid changes in the imaged scenes. Besides providing a map of the earth's surface, the complex-valued radar images can be further processed to supply additional information about the topography and objects in the field of view. A fast processing algorithm has been developed for SIREV which allows a very accurate, phase preserving and efficient image formation. A prototype of a forward-looking SIREV system has been built up at the German Aerospace Center and raw data were obtained by a first demonstration flight using a helicopter as a moving platform. Motion errors of the platform could be extracted from the range compressed raw data avoiding the need of an inertial navigation system. The data processing results show good agreement with the theory. After image formation, coherent and incoherent image averaging processes have been applied to improve the image quality. The evaluation of the computational effort shows that a real-time hardware realization can be carried out using off-the-shelf digital components.
- Published
- 2003
- Full Text
- View/download PDF
71. Fracture anisotropy in Ls2 under mixed-mode loading
- Author
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José Zorzin, Ulrich Lohbauer, Anselm Petschelt, Renan Belli, L.H. Da Silva, and Michael Wendler
- Subjects
Materials science ,Mechanics of Materials ,Fracture (geology) ,General Materials Science ,Composite material ,Anisotropy ,Mixed mode ,General Dentistry - Published
- 2015
- Full Text
- View/download PDF
72. Residence and Work Permits
- Author
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Michael Wendler
- Published
- 2002
- Full Text
- View/download PDF
73. Sector imaging radar for enhanced vision (SIREV): simulation and processing techniques
- Author
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Josef Mittermayer, Gerhard Krieger, Stefan Buckreuss, Alberto Moreira, Thomas Sutor, and Michael Wendler
- Subjects
Synthetic aperture radar ,Engineering ,Data processing ,business.industry ,X band ,law.invention ,Data acquisition ,law ,Radar imaging ,Chirp ,Ka band ,Radar ,business ,Remote sensing - Abstract
This paper presents a new formulation of the Extended Chirp Scaling algorithm (ECS)1, suitable for the processing ofdata from the forward looking SAR system SIREV (Sector Imaging Radar for Enhanced Vision). This system is presentlyunder development at the German Aerospace Center (DLR). It is shown that the SIREV data acquisition has severalsimilarities with the ScanSAR mode of operation. Also the differences between SIREV and ScanSAR mode are analyzed.According to these differences, the ECS for ScanSAR has been modified. The modified equations of the ECS are presentedand several simulation results demonstrate the good performance of the ECS for SIREV processing. The SIREV project atDLR was partially funded by STN Atlas Elektronik, Bremen. This company also holds the SIREV license rights.Keywords: Sector Imaging Radar for Enhanced Vision (SIREV), Forward Looking Airborne Radar (FLAR), SyntheticAperture Radar (SAR), Extended Chirp Scaling (ECS) 1. INTRODUCTIONExisting SAR systems are able to observe in boresight, squinted forward or backward direction. However, a SAR
- Published
- 2000
- Full Text
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74. Sector imaging radar for enhanced vision (SIREV): theory and applications
- Author
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Franz Witte, Michael Wendler, Thomas Sutor, and Stefan Buckreuss
- Subjects
Synthetic aperture radar ,User assistance ,Geography ,Relation (database) ,law ,Radar imaging ,Perspective (graphical) ,Systems engineering ,Radar ,Navigational aid ,Field (computer science) ,Simulation ,law.invention - Abstract
The demand for supplementing existing airborne radar systems with enhanced forward looking abilities has considerably increased. Available radar systems are not able to accomplish the needed requirements for enhanced vision. Instead a new approach has to be taken to cover the forward lying sector with respect to the flight path. Presently a system called SIREV (Sector Imaging Radar for Enhanced Vision) is under development at DLR> Due to the all-weather capability of the system and its ability to present radar images very similar to optical images either as top view (mapping mode) or as pilot view (central perspective mode) the system is essentially qualified for navigation support, autonomous landing approaches or taxi support at the ground. IN this paper the authors will describe the idea the new SIREV system originates from and the relation of the SIREV principle to the SAR principle. Different modes of operation and thereby obtainable performance numbers will be discussed with regard to the special advantages of each sensor. Some potential applications of either sensor will be explained in detail. Finally a summarized overview of the system under development at DLR together with a description of a test field setup at Oberpfaffenhofen airfield will be given. The SIREV project at DLR was partially funded by STN Atlas Elektronik Bremen. This company also holds the SIREV license rights.
- Published
- 2000
- Full Text
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75. Key Aspects of German Business Law : A Practical Manual
- Author
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Michael Wendler, Bernd Tremml, Bernard John Buecker, Michael Wendler, Bernd Tremml, and Bernard John Buecker
- Subjects
- Commercial law--Germany
- Abstract
This book presents a clear and precise overview of the key aspects of German business law. It was written by attorneys involved in the daily practice of bu- ness law in Germany and is aimed at people who wish to orient themselves quickly with the German legal system and the manner in which it impacts bu- ness purchases, establishment, operations and liquidations. The first section of the book is devoted to an explanation of the major issues to be considered in acquiring or establishing a business in Germany. The second section focuses on areas of commercial law that are important for an operating business. In comparison to the last edition four new areas (transportation law, customs regulations, insurance law and state liability law) are treated. The f- lowing sections deal with labor law as an independent part of German business law and with computer law. Furthermore, procedural law and European law are addressed. Finally, the last two sections of the book are devoted to an overview over the German tax law, which has an enormous impact on business decisions, and IP law. In all sections special attention has been paid to highlighting and explaining the differences between the German legal system and that of the United States. Nevertheless, the intention is to provide information that will prove valuable to all foreigners, particularly business men and women and lawyers advising clients with an interest in doing business in Germany.
- Published
- 2008
76. Key Aspects of German Business Law : A Practical Manual
- Author
-
Michael Wendler, Bernd Tremml, Bernard John Buecker, Michael Wendler, Bernd Tremml, and Bernard John Buecker
- Subjects
- Commercial law--Germany
- Abstract
This book presents a clear and precise overview of the key aspects of German business law. It was written by attorneys involved in the daily practice of business law in Germany and is aimed at people who wish to orient themselves quickly with the German legal system and the manner in which it impacts business purchases, establishment, operations and liquidations. The first section of the book is devoted to an explanation of the major issues to be considered in acquiring or establishing a business in Germany. The second section focuses on areas of commercial law that are important for an operating business. The following sections deal with labor law as an independent part of German business law and with computer law. Furthermore, procedural law and European law are addressed. Finally, the last two sections of the book are devoted to an overview over the German tax law, which has an enormous impact on business decisions, and IP law. In all sections special attention has been paid to highlighting and explaining the differences between the German legal system and that of the United States. Nevertheless, the intention is to provide information that will prove valuable to all foreigners, particularly business men and women and lawyers advising clients with an interest in doing business in Germany.
- Published
- 2006
77. Continuum shell-model calculation for 14C including core excitations
- Author
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M. Micklinghoff and Wolf-Michael Wendler
- Subjects
Physics ,Nuclear and High Energy Physics ,symbols.namesake ,Amplitude ,Valence (chemistry) ,Continuum (measurement) ,Gaussian ,Bound state ,symbols ,Resonance ,Neutron ,Atomic physics ,Neutron scattering - Abstract
Elastic and inelastic cross sections for neutron scattering on 13C have been calculated up to 10 MeV including excitations of the 12C core. The core properties are taken from experiment while the additional neutrons are described in a shell-model basis. Antisymmetrization between the valence particles and the core is taken into account as a second-order perturbation effect. All results including those for the target and the bound states of 14C are compared to experimental data. The differences between a gaussian and a δ interaction for the valence particles is investigated. The calculation was only feasible with a modified continuum shell model, i.e. approximating the single-particle resonances by bound states. The remaining modified continuum states are damped in amplitude within the resonance region. The residual interaction between modified continuum states is neglected.
- Published
- 1985
- Full Text
- View/download PDF
78. Influence of coulomb polarization on elastic scattering of deuterons by heavy nuclei
- Author
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Wolf-Michael Wendler, Albrecht Lindner, and Bernd Anders
- Subjects
Physics ,Elastic scattering ,Nuclear and High Energy Physics ,Scattering ,Nuclear Theory ,Mott scattering ,Polarization (waves) ,Nuclear physics ,Adiabatic theorem ,Deuterium ,Coulomb ,Atomic physics ,Nuclear Experiment ,Nucleon - Abstract
Describing deuteron scattering as a three-body problem with nucleon optical potentials and the Hulthen potential, and including approximately the break-up states of the deuteron, we calculated without further approximation the influence of the Coulomb polarization. We find an effect for d + 58Ni at 11.8 and 21.6 MeV which is larger than found with the adiabatic approximation.
- Published
- 1980
- Full Text
- View/download PDF
79. Modified continuum shell-model theory for (n, 2n) reactions
- Author
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Wolf-Michael Wendler
- Subjects
Coupling ,Physics ,Nuclear and High Energy Physics ,Neutron capture ,Classical mechanics ,Basis (linear algebra) ,Continuum (topology) ,Linear continuum ,Diagonal ,Integral equation ,Inelastic neutron scattering - Abstract
The modified continuum shell-model used in earlier papers for a consistent description of elastic and inelastic neutron scattering as well as neutron capture reactions has been extended to the case of (n, 2n) reactions. Using a particle-core coupling basis, the resulting two-dimensional integral equation for the transition operator incorporates the important effects of core excitations and antisymmetrization. It is shown that the use of the modified continuum states reduces the numerical expenditure drastically as compared to the conventional continuum treatment. Generalizing common approximation schemes known from the shell model with one particle in the continuum, such as the neglect of the continuum-continuum coupling and the diagonal approximation, to the three-particle case yields a one-dimensional integral equation or allows even for a direct calculation of the transition operator.
- Published
- 1987
- Full Text
- View/download PDF
80. Fast neutron capture by 13C
- Author
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Wolf-Michael Wendler and M. Micklinghoff
- Subjects
Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Neutron capture ,Nuclear Theory ,SHELL model ,Experimental data ,Nuclear cross section ,Neutron ,Inelastic scattering ,Neutron temperature ,Inelastic neutron scattering - Abstract
A modified continuum shell model in conjunction with the particle-core coupling model is used to calculate the capture of fast neutrons by 13 C. Results for the total and differential cross sections as well as the analyzing powers are presented. The calculated 90° cross section is compared with experimental data. Effects like the opening of the f-shell and the existence of primary and secondary doorway states are essential for the description of the experimental data. The same parameters as in a recent study of the elastic and inelastic scattering of neutrons by 13 C are taken. The formalism is compared to the direct-semidirect approach.
- Published
- 1985
- Full Text
- View/download PDF
81. Interferometric performance estimation for the interferometric cartwheel in combination with a transmitting SAR-satellite
- Author
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Michael Wendler, Alberto Moreira, Josef Mittermayer, and Gerhard Krieger
- Subjects
cartwheel ,Aerospace instrumentation ,Synthetic aperture radar ,Performance estimation ,business.industry ,Astrophysics::Instrumentation and Methods for Astrophysics ,interferometry ,Spaceborne radar ,Interferometry ,Bistatic radar ,Optics ,Astrophysics::Solar and Stellar Astrophysics ,Satellite ,business ,Geology ,SAR ,Remote sensing - Abstract
Presents the results of a preliminary interferometric performance estimation for the bistatic Cartwheel/ASAR combination. The interferometric baselines are investigated and a first estimation for the achievable interferometric height performance is given.
82. Performance analysis for bistatic interferometric SAR configurations
- Author
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Josef Mittermayer, Gerhard Krieger, Hauke Fiedler, Alberto Moreira, and Michael Wendler
- Subjects
Synthetic aperture radar ,Flat surface ,business.industry ,Quantization (signal processing) ,Astrophysics::Instrumentation and Methods for Astrophysics ,Azimuth ,Bistatic radar ,Interferometry ,Optics ,Interferometric synthetic aperture radar ,business ,Decorrelation ,Geology ,Spaceborne SAR - Parasitic SAR - Performance analysis - Micro Satellites ,Remote sensing - Abstract
The results of an interferometric performance analysis for spaceborne parasitic SAR configurations are presented. The analysis includes errors due to limited SNR, block adaptive quantization, range and azimuth ambiguities, and geometric decorrelation for both flat surfaces and random volumes. Relative height accuracies for three spaceborne configurations with PALSAR, ASAR and TerraSAR-X as illuminators are derived and compared.
83. ONERA-DLR bistatic SAR campaign:Planning, data acquisition, and first analysis of bistatic scattering behavior of natural and urban targets
- Author
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B. Vaizan, Ralf Horn, Gerhard Krieger, Hubert Cantalloube, Michael Wendler, Vincent Giroux, and Pascale Dubois-Fernandez
- Subjects
Computer Networks and Communications ,Transmitter ,Image processing ,Context (language use) ,law.invention ,Bistatic radar ,Interferometry ,Geography ,Data acquisition ,law ,bistatic scattering ,bistatic SAR ,bistatic airborne SAR experiment ,Radar ,Baseline (configuration management) ,Remote sensing - Abstract
Bistatic configuration is an attractive concept for spaceborne and airborne SAR missions when distributed radars are necessary as for example in the case of interferometric applications. The first reason is the important cost reduction achieved over the multiple radar elements, by having only one transmitter (expensive part) and multiple receivers. The most promising applications are single-pass interferometry with a large baseline and target or surface characterisation from bistatic scattering signature analysis. In a defence context, the improved stealth associated with the receive-only component can provide a wider operational capability. In order to explore the potentials and technical challenges associated with bistatic radar, DLR and ONERA have conducted a joint bistatic airborne radar experiment involving both their SAR systems E-SAR and RAMSES between October 2002 and February 2003. Two main geometrical configurations were flown to explore different scientific and technical objectives. In the first geometrical configuration, the quasi-monostatic mode, the two planes were flying very close to each other to acquire interferometric data in a single-pass cross-platform configuration with large interferometric baselines. The second geometrical configuration was designed to acquire images with a large bistatic angle. The two planes were flying on parallel tracks around 2 km apart, at about the same altitude, with the antennas pointing at the same area on the ground. The authors describe this research programme, including the preparation phase, the analysis of the technological challenges that had to be solved before the acquisition, the strategy adopted for bistatic image processing, the first results and a preliminary analysis of the acquired images.
84. Bacterial Microbiota Characterization on Implant-supported PEEK and Titanium Provisional Abutments
- Author
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Michael Wendler Ernst, Assistant Professor at the Department of Restorative Dentistry, Faculty of Dentistry
- Published
- 2019
85. Fracture Resistance and Failure Mode of Polyethylene Fiber-reinforced Resin-based Restorations in Structurally Compromised Premolars: an in Vitro Study.
- Author
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Canobra LF, Parra-Gatica E, Sanhueza V, Medina C, and Wendler M
- Subjects
- Humans, In Vitro Techniques, Polyethylene chemistry, Polyethylene therapeutic use, Microscopy, Electron, Scanning, Materials Testing, Tooth Fractures prevention & control, Tooth, Nonvital therapy, Polyethylenes, Bicuspid, Composite Resins therapeutic use, Composite Resins chemistry, Dental Stress Analysis, Dental Restoration, Permanent methods, Dental Restoration Failure
- Abstract
Objective: To evaluate the effect of polyethylene fiber-reinforcement on the fracture resistance and fracture mode of extensive resin-based composite (RBC) restorations in structurally compromised maxillary premolars., Methods and Materials: Maxillary premolars (54) with specific dimensions and extracted for orthodontic reasons were used. Following mesio-occluso-distal (MOD) cavity preparation and endodontic access, teeth were randomly assigned to one of three restorative protocols (n=18): RBC applied incrementally (I) or reinforced with woven polyethylene fibers (Ribbond) placed horizontally (H) or U-shaped (U). Restored teeth were stored for 45 days in distilled water at 37°C and then loaded monotonically until fracture. Half of the specimens in each group received axial loading (A) and the other half was loaded paraxially (PA). Fracture load data was assessed using two-way analysis of variance and Tukey's post hoc test for multiple comparisons (α=0.05). The fracture initiation and propagation path were analyzed using stereomicroscopy and scanning-electron microscopy., Results: No significant differences were observed for the fracture strength among loading configurations, except for groups IA (825 N) and HA (553 N). Fracture initiated and propagated mainly at and through the RBC restoration in the I group, whereas a shift to the interface was observed in both polyethylene fiber-reinforced groups. Blocking and bridging of cracks were identified around the fibers, especially in specimens of group U., Conclusions: Incorporation of woven polyethylene fibers to reinforce extensive MOD resin-based composite restorations on endodontically treated premolars reduced the occurrence of cohesive fractures in the restorative material but was unable to increase the fracture resistance of the affected teeth., (©Operative Dentistry, 2024.)
- Published
- 2024
- Full Text
- View/download PDF
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