TY - RPRT A1 - Bhaiya, Madhur A1 - Jahr, Andreas A1 - Happel, Holger T1 - Harvesting-Combine-Flow Simulation Technique N2 - CFX 11.0 is a Computational Fluid Dynamics (CFD) program for simulating the behavior of systems involving fluid flow, heat transfer, and other related physical processes. It works by solving the equations of fluid flow (in a special form) over a region of interest, with specified (known) conditions on the boundary of that region. This tool is used here to analyse the straw cutter which is used to comminute the straw which is left standing in the field after stripper header has stripped the grains from the crops. Stripper Header is a new technique different to conventional harvester machines and it is still under development and testing. It works on the principle in which grains are first stripped off from the head of the standing crop which helps in much reduced intake freeing up the separation systems to handle a larger volume of grains. But with this, the new problem of the disposal of the long, uncut straw left after stripping of grains arose. So a straw cutter is used after the stripper header stage in this Combine Harvester, where the rotor is equipped with pressed steel blades and rotates towards the crop, i.e., it cuts and lifts the straw over the top. This technique is environment friendly because previously farmers would have to burn the long, uncut straw standing in the fields while in this case mulched straw can be used for min-till systems. This rotor based straw cutting machine is analysed here which helps us in increasing power efficiency and comminution rate and quality of cut straw particles. Here fluid flow simulation has been preferred over particle simulation: - CFX 10.0 tool is not very effective for particle simulation techniques and computation time is increased considerably. - It’s very hard to realize particle simulation in CFX 10.0 because we have to define size and properties of each particle and besides this wall conditions would have to be defined differently for every boundary. - Besides this, it’s hard to realize cutting effect with straw particles in CFX 10.0 which otherwise would be comminuted in real life conditions. - The results obtained from fluid simulation are validated using experimental results and found to be nearly the same which clearly contradicts any need of performing particle simulation. KW - Häckseln KW - Ernte KW - Stroh KW - Partikelstrom KW - CFD KW - chaff KW - harvesting KW - Particle flow KW - simulation KW - FHD Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-4239 CY - Düsseldorf ER - TY - CHAP A1 - Herder, Jens T1 - Cooperative Tools for Teaching : an Impact of a Network Environment T2 - Annual Report of the Information Systems and Technology Center, University of Aizu, October 1997 N2 - Education at the University of Aizu is focussed upon computer science. Besides being the subject matter of many courses, however, the computer also plays a vital role in the educational process itself, both in the distribution of instructional media, and in providing students with valuable practical experience. All students have unlimited access (24-hours-a-day) to individual networked workstations, most of which are multimedia-capable (even video capture is possible in two exercise rooms). Without software and content tailored for computer-aided instruction, the hardware becomes an expensive decoration. In any case, there is a need to better educate the instructors and students in the use of the equipment. In the interest of facilitating effective, collaborative use of network-based computers in teaching, this article explores the impact that a network environment can have on such activities. First, as a general overview, and to examine the motivation for the use of a network environment in teaching, this article reviews a range of different styles of collaboration. Then the article shows what kind of tools are available for use, within the context of what has come to be called Computer-Supported Cooperative Work (CSCW). KW - CAI KW - CAT KW - computer education KW - collaborative work KW - CSCW KW - groupware KW - FHD Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-827 SP - 3 EP - 8 CY - Aizu ER - TY - CHAP A1 - Herder, Jens T1 - Sound Spatialization Framework: An Audio Toolkit for Virtual Environments T2 - First International Conference on Human and Computer, Aizu-Wakamatsu, September 1998 N2 - The Sound Spatialization Framework is a C++ toolkit and development environment for providing advanced sound spatialization for virtual reality and multimedia applications. The Sound Spatialization Framework provides many powerful display and user-interface features not found in other sound spatialization software packages. It provides facilities that go beyond simple sound source spatialization: visualization and editing of the soundscape, multiple sinks, clustering of sound sources, monitoring and controlling resource management, support for various spatialization backends, and classes for MIDI animation and handling. KW - sound spatialization KW - resource management KW - virtual environments KW - spatial sound authoring KW - user interface design KW - human-machine interfaces Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-788 CY - Aizu ER - TY - CHAP A1 - Herder, Jens T1 - Tools and widgets for spatial sound authoring T2 - CompuGraphics ' 97, Sixth International Conference on Computational Graphics and Visualization Techniques: Graphics in the Internet Age, Vilamoura, Portugal N2 - Broader use of virtual reality environments and sophisticated animations spawn a need for spatial sound. Until now, spatial sound design has been based very much on experience and trial and error. Most effects are hand-crafted, because good design tools for spatial sound do not exist. This paper discusses spatial sound authoring and its applications, including shared virtual reality environments based on VRML. New utilities introduced by this research are an inspector for sound sources, an interactive resource manager, and a visual soundscape manipulator. The tools are part of a sound spatialization framework and allow a designer/author of multimedia content to monitor and debug sound events. Resource constraints like limited sound spatialization channels can also be simulated. KW - spatial sound KW - virtual reality environments KW - multimedia KW - spatialization KW - spatial media KW - vizualization KW - user interface design KW - man-machine interfaces Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-896 UR - http://vsvr.medien.hs-duesseldorf.de/publications/cg97-tawfssa/welcome.html SN - 972-8342-02-0 N1 - Zugriff auf die Konferenzveröffentlichung über den angegebene URL conference paper available via URL SP - 87 EP - 95 CY - Portugal ER - TY - RPRT A1 - Bleuel, Hans-H. ED - Kalmring, Dirk T1 - The German banking system and the global financial crisis: causes, developments and policy responses N2 - Germany’s banking sector has been severely hit by the global financial crisis. In a German context as of February, 2009, this paper reviews briefly the structure of the banking industry, quantifies effects of the crisis on banks and surveys responses of economic policy. It is argued that policy design needs to enhance transparency and enforce the liability principle. In addition, economic policy should not eclipse principles of competition policy. N2 - Der deutsche Bankensektor ist durch die internationale Finanzkrise schwer getroffen. Auf Deutschland und die im Februar 2009 verfügbaren Informationen bezogen, werden die Struktur des Bankensektors kurz umrissen, die Effekte auf die Banken quantifiziert und wirtschaftspolitische Reaktionen aufgezeigt. Ziel der Wirtschaftspolitik ist es, die Transparenz zu erhöhen und das Haftungsprinzip durchzusetzen. Darüber hinaus sollten Grundsätze der Wettbewerbspolitik nicht in den Hintergrund geraten. T2 - The German banking system and the global financial crisis: causes, developments and policy responses T3 - Forschungsberichte des Fachbereichs Wirtschaftswissenschaften der Hochschule Düsseldorf - 8 KW - Bank KW - Bankenkrise KW - Finanzmarktkrise KW - Wirtschaftspolitik KW - Deutschland KW - bank KW - banking crisis KW - financial crisis KW - economic policy KW - Germany KW - FHD Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-5116 N1 - Erster / früherer Titel der Reihe: Forschungsberichte des Fachbereichs Wirtschaft der Fachhochschule Düsseldorf bis 2014 IS - 8 CY - Düsseldorf ER - TY - RPRT A1 - Thiel, Christoph T1 - Constructing lattice bases by means of approximations N2 - The construction of a basis of a certain lattice of interest is a basic tool in many fields of algorithmic number theory. All too often we can not compute with the original lattices because of irrational numbers involved but have to work with approximations of them. While helpful bounds were shown about the reduction of lattice bases in cite{buchmann94reducing}, here we introduce the notion of a $(epsilon,delta)$-constructable basis of a lattice and determine the precision of vectors that is necessary to extend a set to a $(epsilon,delta)$-constructable basis. T2 - Constructing lattice bases by means of approximations KW - Zahlentheorie KW - Gitter KW - Approximation KW - number theorie KW - lattices KW - approximation KW - FHD Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-6128 CY - Düsseldorf ER - TY - THES A1 - Buckley, Andrea T1 - Medical social work in Ireland and Germany : a comparison of a personal social service in two different welfare states N2 - Diese Masterarbeit wurde als Abschlußarbeit für den Studiengang Master of European Social Policy Analysis an der National University of Ireland Maynooth eingereicht . Der Titel lautet : Soziale Arbeit im Krankenhaus in Irland und Deutschland: ein Vergleich einer personenbezogenen sozialen Dienstleistung in zwei verschiedenen Wohlfahrtsstaaten. Sie beschreibt und analysiert den Kontext bzw. die Rahmenbedingungen, in dem Soziale Arbeit im Krankenhaus (Sozialdienst im Krankenhaus) stattfindet. Hier wird der Bezug zwischen gesellschaftlichem Kontext als Ganzem, dem Gesundheitssystem im allgemeinen (Makroebene) und den Rahmenbedingungen im Krankenhaus (Mesoebene) besonderes Augenmerk gewidmet. Die Idee dieser Arbeit ist, einen kurzen historischen Überblick über die Entwicklung der Krankenhaussozialarbeit (Mikroebene) in beiden Ländern zu geben, sowie Hintergrundinformationen darüber, was Soziale Arbeit / Sozialdienst im Krankenhaus beinhaltet. Der untersuchte Zeitraum reicht von 1980 bis heute. Die Hauptuntersuchungsfragen lauten: Welche Interdependenzen gibt es zwischen Makro-, Meso- und Mikroebene? Haben Veränderungen im Gesundheitssystem bzw. der Gesundheitspolitik im Allgemeinen und hinsichtlich der Krankenhäuser im Besonderen die Arbeit im Krankenhaussozialdienst beeinflusst und wenn ja, wie? Welche Gemeinsamkeiten und Unterschiede gibt es in diesem Kontext in den beiden untersuchten Ländern? N2 - This dissertation, written for the course Master of European Social Policy Analysis – National University of Ireland Maynooth - , shows the context or so-called framework within which the medical social work service in two different welfare states: Ireland and Germany operates. This means the societal context as a whole, the health system in general (macro-level) and the hospital setting (mezzo-level) in particular. The idea of this publication is to give a short overview of the historic development of medical social work (micro-level) in Ireland and Germany and some background information about what medical social work is. The time frame examined starts from the 1980s up to present. The main questions to be answered are: What are the interdependencies between the macro-, mezzo- and micro-level? Have changes in the health system in general and the hospitals in particular influenced medical social work and if so how? What are the similarities and differences in the two countries? KW - Krankenhaus KW - Irland KW - Deutschland KW - Ländervergleich KW - komparative Sozialforschung KW - medical social work KW - Ireland KW - Germany KW - comparative research KW - hospitals KW - FHD Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-3292 ER - TY - RPRT A1 - Vogel, Peter T1 - Investing as Random Trial T2 - Trading N2 - We introduce an investment algorithm for a market of individual securities. The investment algorithm is derived from constraints depending on investment parameters in order to limit the risk and to take into account an individual investor. One constraint is devoted to trading costs. Purchased securities are selected randomly among securities that meet the buy condition, making trading a random trial. Simulations with historical price data are demonstrated for a simple example: The buy condition is evaluated on the basis of the price relationship for two subsequent trading days and the sales condition is defined by holding securities only for one day. A trading expert evaluates the expected return for the investment algorithm with respect to the random selection. Thus, the expert informs precisely on how many market players perform using the same investment algorithm. Its findings are for a parametrized set of buy conditions simultaneously, which makes a trading expert a valuable tool for theorists as well as for practitioners. In our example, the trading expert demonstrated clearly a significant mean reversion effect for a horizon of one day. T3 - Trading - 1 KW - investment constraints KW - investment algorithm KW - investing as random trial KW - trading expert KW - mean reversion Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-11118 UR - https://opus4.kobv.de/opus4-hs-duesseldorf/1501 SN - 2567-2347 IS - 1 EP - 1 PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - RPRT A1 - Auth, Diana A1 - Dierkes, Mirjam A1 - Leiber, Simone A1 - Leitner, Sigrid T1 - Reconciling employment and elderly care within the "adult worker model": typical arrangements of caring sons N2 - Reconciling work and family life is one of the main issues of welfare state policies in the fields of childcare and long-term care. On that account, policy and research are focused almost exclusively on women – often on the reconciliation of work and childbearing – and social policy at the state level. In our study, we concentrate on men who reconcile gainful employment with elderly care, and we include the company level – a level of analysis often neglected in traditional theoretical approaches and typologies of comparative welfare state research. In Germany, during the last decade, the share of sons who are responsible for taking care of their elderly relatives has remarkably increased. In our qualitative research, we carried out comparative case studies in eleven German companies. We conducted around 60 interviews with male employees caring for an elderly relative, as well as with members of the works councils and human resources departments in different kinds of companies. We analysed which familial, social, professional, legal as well as occupational resources are central for these men, how they cope with reconciling work and care, and which gaps in the welfare system they identify. Interestingly, the overwhelming majority of the caring sons claim not to have problems in reconciling work and care, although they spend significant time on caring. In this paper we try to explain this pattern by looking at their typical care arrangements. We found that while women tend to organise employment around care, men rather seem to organise care around their employment. Given the feminist critique of the “adult worker model” this is an interesting result and needs theoretical reflection. Do men have the solution to the care-blindness of the “adult worker model” without falling into the “cold modern model of care”? Which resources are mainly used in “adult worker care arrangements”? Where are the limits of the approach? N2 - Die Vereinbarkeit von Erwerbstätigkeit und Sorgearbeit ist ein wichtiges Handlungsfeld wohlfahrtsstaatlicher Politik. Vorhandene Studien nehmen dabei vorwiegend die Vereinbarkeit von Kindererziehung und Beruf durch Frauen in den Blick, und betrachten überwiegend staatliche Politiken. In dieser Studie geht es um Männer, die erwerbstätig sind und gleichzeitig pflegen. Wir beziehen dabei auch die betriebliche Ebene ein, eine Analyseperspektive, die in den theoretischen Ansätzen und Typologien der vergleichenden Wohlfahrtsstaatsforschung eher vernachlässigt wird. In Deutschland ist der Anteil der pflegenden Söhne in den letzten Jahren deutlich angestiegen. In unserer qualitativen Studien haben wir elf Betriebsfallstudien in deutschen Unternehmen durchgeführt und dabei rund 60 Interviews mit erwerbstätigen, pflegenden Männern sowie betrieblichen Interessenvertretungen der Beschäftigten und Personalabteilungen von Unternehmen geführt. Im Zentrum standen dabei betriebliche, familiäre, soziale und rechtliche Ressourcen der pflegenden Männer, deren Bewältigungsmuster bei der Vereinbarkeit von Pflege und Beruf sowie von ihnen identifizierte Lücken des wohlfahrtsstaatlichen Systems. Die überwiegende Mehrheit der pflegenden Söhne gibt dabei an, keine Vereinbarkeitsprobleme zu haben, obwohl sie beträchtliche Zeit mit den unterstützenden und pflegerischen Aufgaben verbringen. Im Aufsatz versuchen wir diesem Puzzle nachzugehen, indem wir typische Pflegearrangements herausarbeiten. Es zeigt sich, dass die hier untersuchten Söhne in der Regel die Pflege um ihre (Vollzeit-)Erwerbstätigkeit herum organisieren, während Frauen ihre Erwerbstätigkeit tendenziell nach der Pflege ausrichten. Vor dem Hintergrund der feministischen Kritik am "adult worker model" wird dies näher diskutiert: Haben die Männer etwa eine Lösung für die Blindheit des "adult workel models" für Sorgearbeit, ohne ins "cold modern model of care" zu verfallen? Welche Ressourcen werden in "adult worker care arrangements" vor allem genutzt? Wo liegen Grenzen dieses Ansatzes? T3 - Studies in Social Sciences and Culture. Aus der Forschung des Fachbereichs Sozial- und Kulturwissenschaften der HSD - 2 KW - Angehörigenpflege KW - Vereinbarkeit Pflege und Beruf KW - pflegende Männer KW - elderly care KW - reconciliation of work and care KW - caring men Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-10459 SN - 2509-6958 CY - Düsseldorf ER - TY - RPRT A1 - Greil, Stefan A1 - Schwarz, Christian A1 - Stein, Stefan ED - Kalmring, Dirk T1 - Perceived Fairness in the Taxation of a Digital Business Model T1 - Fairness und die Besteuerung digitaler Geschäftsmodelle N2 - The “fair” taxation of digital business models is challenging. One of the key aspects – both policy makers and the public opinion consider as most pressuring – is the determination of intragroup transfer prices for intangibles used in digital business models. In this paper, we address the issue of a “perceived fair” taxation of the digital economy in the light of the arm’s length principle based on a survey with transfer pricing experts. The aim of the survey is not to estimate arm’s length profit allocations but rather to elicit fairness considerations in different transfer pricing related scenarios. In a digital economy framework where arm’s length profits are distributed extremely inequitably, subjects perceive this distribution of profits as most unfair compared to more balanced scenarios. Consequently, subjects propose a “fair” distribution of profits that substantially differs from the exogenously given arm’s length allocation. In scenarios with a more balanced arm’s length allocation of profits, we find that the perceived fairness for the expert groups increases while a control group of business students is almost not influenced by the arm’s length allocation of profits. N2 - Die „faire“ Besteuerung digitaler Geschäftsmodelle ist herausfordernd. Einer der Schlüsselaspekte ist dabei die Ermittlung konzerninterner fremdvergleichskonformer Verrechnungspreise für immaterielle Vermögenswerte, die verstärkt in digitalen Geschäftsmodellen genutzt werden. Dieser Beitrag beschäftigt sich mit der „wahrgenommenen“ Fairness bei der Besteuerung digitaler Geschäftsmodelle vor dem Hintergrund des Fremdvergleichsgrundsatz. Grundlage hierfür ist eine Umfrage unter Verrechnungspreis-Experten (Finanzbeamte und Steuerberater). Wir finden, dass wenn der Fremdvergleichsgrundsatz zu einer sehr ungleichen Verteilung des Steuersubstrats führt, die Teilnehmer diese Gewinnverteilung im Vergleich zu ausgewogeneren Szenarien als unfair erachten. Dementsprechend zeigen unsere Ergebnisse, dass zwar der Fremdvergleichsgrundsatz als Referenzpunkt für Fairness Überlegungen dient. In Bezug auf die individuell vorgeschlagene faire Gewinnverteilung können aber erhebliche Unterschiede zur fremdvergleichskonformen Gewinnverteilung bestehen. T3 - Forschungsberichte des Fachbereichs Wirtschaftswissenschaften der Hochschule Düsseldorf - 47 KW - corporate income tax KW - profit-shifting KW - arm's length principle KW - fairness KW - Unternehmensbesteuerung KW - Gewinnverlagerung KW - Fremdvergleichsgrundsatz KW - digitale Geschäftsmodelle Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-15759 SN - 2365-3361 CY - Düsseldorf ER -