982 resultados para dual system encryption


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Der Vergleich der deutschen und der schweizerischen Rundfunkordnung unter dem Aspekt des Dualismus 1.Einleitung: Bedeutung und Grundlagen des „Dualismus“ 2.Das „duale System“ in der deutschen Rundfunkordnung 2.1 Die Genese des „dualen Systems“ - Historische und rechtliche Rahmenbedingungen 2.2 Die aktuelle Ausgestaltung des „dualen Systems“ 2.3 Das „duale System“ im europäischen Raum – europarechtliche Einflüsse und Vorgaben 3. Das „duale System“ in der schweizerischen Rundfunkordnung 3.1 Die Genese des „dualen Systems“ - Historische und rechtliche Rahmenbedingungen 3.2 Die aktuelle Ausgestaltung des „dualen Systems“ 3.3 Vergleichende Betrachtung unterschiedlicher Ausprägungen des „dualen Systems“ im Rahmen der Revision des RTVG 4. Vergleichende Betrachtung der „dualen Systeme“ 4.1 Historische und gesetzliche Rahmenbedingungen 4.2 Die spezifischen Besonderheiten des schweizerischen Rundfunkmarktes 4.3 Die einzelnen Elemente der Rundfunkordnung 5. Endergebnis Duale Systeme im Bereich des Rundfunkrechtes bedeuten Koexistenz von privaten und öffentlich-rechtlichen Rundfunkveranstaltern. Die in der Verfassung der Bundesrepublik Deutschland angelegte Rundfunkordnung ist im wesentlichen durch die Rechtsprechung des Bundesverfassungsgerichts geprägt worden. Das aufgrund dieser Vorgaben gewachsene duale System besteht aus einem starken öffentlich-rechtlichen Rundfunk, dessen Position durch die vorrangige Finanzierung aus Gebühren privilegiert wird. Im Gegenzug wird ihm die zentrale Aufgabe zur Sicherung der Grundversorgung zugewiesen. Daneben bestehen die privaten Rundfunkveranstalter, die sich aus Werbeeinnahmen und Nutzungsentgelten finanzieren und insoweit dem Wettbewerb im Markt in höherem Maße ausgeliefert sind. Im europäischen Bereich fällt der Schutz von Pluralismus und Meinungsvielfalt in erster Linie in den Zuständigkeitsbereich der Mitgliedstaaten. Die Medienlandschaften der Mitgliedstaaten sind durch vielfältige Eigenheiten und Traditionen geprägt, die gerade erhalten bleiben sollen. Die Ausgestaltung des dualen Systems im europäischen Rahmen wirft mithin Bedenken allein im Hinblick auf die Finanzierung der öffentlich-rechtlichen Veranstalter aus öffentlichen Ressourcen und die darauf basierende Wettbewerbsverzerrung auf. Mit dem Radio- und Fernsehgesetz von 1991 wurde in der Schweiz ein duales Rundfunksystem eingeführt. Das Treuhandmodell wurde ergänzt durch das Marktmodell. Allerdings galt das duale System für Rundfunk und Fernsehen in der Schweiz nur in der abgeschwächten Form eines staatlich geordneten Wettbewerbs. Es bestand ein Drei-Ebenen-Modell, das eine direkte Konkurrenz zwischen der nationalen Dachorganisation SRG (Schweizerische Rundfunkgesellschaft) und privaten Unternehmen weitestgehend vermied. Die Hauptverpflichtung des Service public oblag der SRG, die auch die Gebühren erhielt. Daneben wurden allerdings alle Veranstalter zu Service-public-Leistungen verpflichtet. Im Gegenzug dazu sah der Gesetzgeber in marktschwachen Regionen ein Gebührensplitting vor. Mit dem neuen RTVG soll dem Service Public eine Bestands- und Entwicklungsgarantie zugesichert werden. Anstelle einer scharfen Trennung zwischen gebühren- und werbefinanzierten Anbietern mit entsprechend unterschiedlichen Funktionen im Mediensystem sollen allerdings die elektronischen Medien in der Schweiz großflächig subventioniert und vermehrt mit Leistungsaufträgen gesteuert werden. Gerade auf lokaler Ebene wird eine Ausweitung des Gebührensplittings vorgesehen. Nicht nur einer, sondern eine Vielzahl von Veranstaltern soll künftig mit der Grundversorgung beauftragt werden. Insbesondere der Service public régional soll von privaten Anbietern und der SRG erbracht werden. Eine Inpflichtnahme sämtlicher privater Rundfunkveranstalter wird indes nicht vorgesehen. Anhand dieser Masterarbeit sollen weiterhin die Unterschiede herausgearbeitet werden, die einzelne nationale Rundfunksysteme aufweisen können und damit auch die rundfunkpolitischen Modelle trotz des gleich bleibenden Grundgedankens, hier des Dualismus. Die Modelle sind stets in ihrem spezifischen politischen und kulturellen Kontext zu sehen, woraus sie historisch gewachsen sind. Durch den Vergleich sollen auf der einen Seite die Probleme der Rundfunkmodelle dargelegt werden, die diesen unabhängig von ihrer Ausgestaltung in mehr oder minder ausgeprägter Form generell innewohnen (Definition der Grundversorgung - des Service public/ Ressourcenknappheit/ Krisen des dualen Systems). Andererseits sollen die spezifischen Probleme der Schweiz aufgrund ihrer mehrsprachigen, kleinstaatlichen Struktur verdeutlicht werden (Hoher Marktanteil an ausländischen, überwiegend deutschsprachigen Programmen an der Fernsehnutzung; Mehrsprachigkeit; Kleinräumigkeit von Zuschauer- und Zuhörermärkten sowie der Werbemärkte).

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This paper describes the design of an original twin capacitive load that is able of tracing simultaneously the I?V characteristics of two photovoltaic modules. Besides, an example of the application of this dual system to the outdoor rating of photovoltaic modules is presented, whose results have shown a good degree of repeatability.

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In the mammalian retina, extensive processing of spatiotemporal and chromatic information occurs. One key principle in signal transfer through the retina is parallel processing. Two of these parallel pathways are the ON- and OFF-channels transmitting light and dark signals. This dual system is created in the outer plexiform layer, the first relay station in retinal signal transfer. Photoreceptors release glutamate onto ON- and OFF-type bipolar cells, which are functionally distinguished by their postsynaptic expression of different types of glutamate receptors, namely ionotropic and metabotropic glutamate receptors. In the current concept, rod photoreceptors connect only to rod bipolar cells (ON-type) and cone photoreceptors connect only to cone bipolar cells (ON- and OFF-type). We have studied the distribution of (RS)-α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) glutamate receptor subunits at the synapses in the outer plexiform layer of the rodent retina by immunoelectron microscopy and serial section reconstruction. We report a non-classical synaptic contact and an alternative pathway for rod signals in the retina. Rod photoreceptors made synaptic contact with putative OFF-cone bipolar cells that expressed the AMPA glutamate receptor subunits GluR1 and GluR2 on their dendrites. Thus, in the retina of mouse and rat, an alternative pathway for rod signals exists, where rod photoreceptors bypass the rod bipolar cell and directly excite OFF-cone bipolar cells through an ionotropic sign-conserving AMPA glutamate receptor.

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This layer is a georeferenced raster image of the historic paper map entitled: Map showing routes & stations on the dual system October, 1918. It was published by State of New York Public Service Commission for the First District in 1918. Scale [ca. 1:46,000]. Covers Manhattan, Queens, Brooklyn, and Bronx, New York, N.Y. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM) Zone 18N NAD83 projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as subway and elevated railroad lines and stations, drainage, and more. Includes inset: Sub Plan. Includes legend and key. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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Through a case study of the diffusion of the celebrated West Gennan "dual system" of vocational training to the territory of the fonner German Democratic Republic, we develop the argument that local sociopolitical relations matter crucially for the successful transfer and implementation of institutional arrangements. Notwithstanding massive levels of government funding, the presence of complementary supports, and the concerted efforts of Ger­many's social partners, the dual system is experiencing significant difficulties in the new federal states of the East. These difficulties are not due simply to the particular politics of unification (the wholesale transfer of West German institutions whether or not they were appropriate to Eastern Germany) nor even simply to the paucity of dynamic private firms capable of and willing to train new apprentices. The difficulties stem also from the under­ lying weaknesses of the East German sociopolitical infrastructure on which the entire dual system rests. This. hy­ pothesis is elaborated and substantiated through a range of data on training in the East and especially through the use of detailed case studies of Leipzig and Chemrutz.

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This paper proposes a comparison of skill formation in Germany and Britain over the last decades. Taking historical trends into account, the two cases can be regarded as representing different types of skill production regimes. Institu-tional features include a relatively low degree of standardization of training and a larger amount of on-the-job training in Britain. In Germany, post-compulsory training has been conducted predominantly within the dual system of vocational training, underlining the vocational specificity of a large part of the labor market. As a consequence, international differences in individual skill investments, transitions from school to work and other life-course patterns can be observed. At least in Britain, however, the situation seems to have changed considerably during the 1990s. The paper argues that the divergence in more recent developments can still be understood as an expression of historical path-dependency given the traditional connections between the post-compulsory training system and the broader societal context in which it is embedded. These concern, in particular, links with the system of general and academic education as the basis for – and also a possible competitor with – vocational training; links with the labor market as they are indicated by specific skill requirements and returns to qualifications; and, links with the order of social stratification in the form of the selective acquisition and the social consequences of these qualifications. The links manifest themselves as typical individual-level consequences and decisions. Founded on the basis of these distinctions, the aim of this paper is to investigate the preceding conditions for recent developments in the qualification systems of Britain and Germany, which have adapted to specific challenges during the last decades.

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In the present work, the more important parameters of the heat pump system and of solar assisted heat pump systems were analysed in a quantitative way. Ideal and real Rankine cycles applied to the heat pump, with and without subcooling and superheating were studied using practical recommended values for their thermodynamics parameters. Comparative characteristics of refrigerants here analysed looking for their applicability in heat pumps for domestic heating and their effect in the performance of the system. Curves for the variation of the coefficient of performance as a function of condensing and evaporating temperatures were prepared for R12. Air, water and earth as low-grade heat sources and basic heat pump design factors for integrated heat pumps and thermal stores and for solar assisted heat pump-series, parallel and dual-systems were studied. The analysis of the relative performance of these systems demonstrated that the dual system presents advantages in domestic applications. An account of energy requirements for space and hater heating in the domestic sector in the O.K. is presented. The expected primary energy savings by using heat pumps to provide for the heating demand of the domestic sector was found to be of the order of 7%. The availability of solar energy in the U.K. climatic conditions and the characteristics of the solar radiation here studied. Tables and graphical representations in order to calculate the incident solar radiation over a tilted roof were prepared and are given in this study in section IV. In order to analyse and calculate the heating load for the system, new mathematical and graphical relations were developed in section V. A domestic space and water heating system is described and studied. It comprises three main components: a solar radiation absorber, the normal roof of a house, a split heat pump and a thermal store. A mathematical study of the heat exchange characteristics in the roof structure was done. This permits to evaluate the energy collected by the roof acting as a radiation absorber and its efficiency. An indication of the relative contributions from the three low-grade sources: ambient air, solar boost and heat loss from the house to the roof space during operation is given in section VI, together with the average seasonal performance and the energy saving for a prototype system tested at the University of Aston. The seasonal performance as found to be 2.6 and the energy savings by using the system studied 61%. A new store configuration to reduce wasted heat losses is also discussed in section VI.

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This paper considers how far Anglo-Saxon conceptions of have influenced European Union vocational education and training policy, especially given the disparate approaches to VET across Europe. Two dominant approaches can be identified: the dual system (exemplified by Germany); and output based models (exemplified by the NVQ ‘English style’). Within the EU itself, the design philosophy of the English output-based model proved in the first instance influential in attempts to develop tools to establish equivalence between vocational qualifications across Europe, resulting in the learning outcomes approach of the European Qualifications Framework, the credit-based model of European VET Credit System and the task-based construction of occupation profiles exemplified by European Skills, Competences and Occupations. The governance model for the English system is, however, predicated on employer demand for ‘skills’ and this does not fit well with the social partnership model encompassing knowledge, skills and competences that is dominant in northern Europe. These contrasting approaches have led to continual modifications to the tools, as these sought to harmonise and reconcile national VET requirements with the original design. A tension is evident in particular between national and regional approaches to vocational education and training, on the one hand, and the policy tools adopted to align European vocational education and training better with the demands of the labour market, including at sectoral level, on the other. This paper explores these tensions and considers the prospects for the successful operation of these tools, paying particular attention to the European Qualifications Framework, European VET Credit System and European Skills, Competences and Occupations tool and the relationships between them and drawing on studies of the construction and furniture industries.

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Zu einem Zeitpunkt, zu dem zahlreiche Entwicklungs- und neuerdings auch Industrieländer das „duale System" der Berufsausbildung in Deutschland als eine Art Idealmodell der beruflichen Qualifizierung entdecken, wachsen die Zweifel, ob dieses Ausbildungssystem angesichts der anhaltenden Expansion von Gymnasium und Hochschule noch eine Zukunftsperspektive hat. Im vorliegenden Beitrag werden die zahlreichen Symptome der Krise des dualen Systems aufgezeigt, es wird versucht, die Ursachen dieser Krise unter sozialhistorischer Fragestellung zu deuten, und es werden die bislang aufgezeigten Vorschläge diskutiert, diese Krise zu überwinden. (DIPF/Orig.)

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Der Beitrag wägt die Vor- und Nachteile des dualen Berufsbildungswesens in Deutschland gegen die sehr viel weniger geregelte Ausbildung in Großbritannien ab. Es werden die Interessen dargelegt, die Arbeitgeber daran hindern bzw. ermutigen; eine betriebsspezifische oder aber eine allgemein anwendbare Aus- oder Fortbildung anzubieten. Verglichen werden Muster einer Interventionspolitik und wirtschaftlicher Regulierung mit denen eines Prinzips des freien Marktes, beides in parlamentarischen Systemen. Der Vergleich der britischen und der deutschen Entwicklung zeigt die unterschiedlichen Voraussetzungen beider Gesellschaften, die auch einer Übertragung des dualen Berufsbildungssystems entgegenstehen. (DIPF/Orig.)

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À semelhança do que acontece noutros países, é essencial analisar o sistema dual de polícia que se encontra em vigor em Portugal. Existem países cujas reformas têm implicado a criação e desenvolvimento de forças tipo Gendarmerie, e outros países em que se tem assistido à sua extinção. Assim, o presente Trabalho de Investigação Aplicada visa compreender a importância da GNR como força Gendarmerie e, tendo em consideração as alterações que se têm vindo a verificar ao nível das forças deste tipo, quais as linhas força de reconfiguração para a GNR. A investigação inicia-se com o estudo da génese das forças de Gendarmerie e são analisados casos de evolução e dissolução deste tipo de forças, nomeadamente: França, Espanha, Itália, Bélgica e Áustria. São identificadas as potencialidades e vulnerabilidades destas forças e os seus fatores de evolução e dissolução. A Guarda Nacional Republicana é abordada enquanto força de segurança de natureza militar, ao nível da sua tutela, das suas missões, da sua organização e da própria condição militar. A metodologia adotada no trabalho segue o método hipotético-dedutivo. Neste sentido, estabelecem-se questões derivadas com o intuito de responder ao objetivo do estudo (questão central) e para cada uma delas é formulada uma hipótese de investigação. Como forma de recolha de dados, realiza-se uma entrevista a oito elementos da área da segurança interna. De acordo com os dados obtidos, as hipóteses de investigação são verificadas e responde-se às questões derivadas. Consequentemente, dá-se resposta à questão central. Conclui-se que a GNR face aos fatores de dissolução de Gendarmeries deve evitar as suas fraquezas e, eventuais ameaças, devendo potenciar algumas das suas valências e tirar partido dos seus pontos fortes.

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In a previous work (Nicu et al. 2013), the flocculation efficiency of three chitosans differing by molecular weight and charge density were evaluated for their potential use as wet end additives in papermaking. According to the promising results obtained, chitosan (single system) and its combination with bentonite (dual system) were evaluated as retention aids, and their efficiency was compared with poly(diallyl dimethyl ammonium chloride) (PDADMAC) and polyethylenimine (PEI). In single systems, chitosan was clearly more efficient in drainage rate than PDADMAC and PEI, especially those with the lowest molecular weights; however, retention is considerably lower. This drawback can be overcome by using dual systems with anionic bentonite microparticles, with the optimum ratio of polymer:bentonite being 1:4 (wt./wt.). In dual systems, the differences in retention were almost negligible, and the difference in drainage rate was even higher, together with better floc reversibility. The most efficient chitosan in single systems was Ch.MMW, while Ch.LMW was the most efficient in dual systems. The flocculation mechanism of chitosan was a combination of patch formation, charge neutralization, and partial bridge formation, and the predominant mechanism depended on the molecular weight and charge density of the chitosan.

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A dual catalyst bed system (Au/Fe2O3 + Pt-Pd/Al2O3) for eliminating hydrogen from the CO2 feed gas in urea synthesis is found to be far superior to commercially available and patented catalysts in catalytic activity. At relatively low temperatures, hydrogen is eliminated and coexistent CO is also oxidized completely to useful CO2. This can avoid effectively the accidental explosion of hydrogen-oxygen-ammonia mixed gases, thus ensuring the safety of urea synthesis.

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In previous work we have presented a model capable of generating human-like movements for a dual arm-hand robot involved in human-robot cooperative tasks. However, the focus was on the generation of reach-to-grasp and reach-to-regrasp bimanual movements and no synchrony in timing was taken into account. In this paper we extend the previous model in order to accomplish bimanual manipulation tasks by synchronously moving both arms and hands of an anthropomorphic robotic system. Specifically, the new extended model has been designed for two different tasks with different degrees of difficulty. Numerical results were obtained by the implementation of the IPOPT solver embedded in our MATLAB simulator.

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Antagonism of renin-angiotensin-aldosterone system is exerted through angiotensin-converting enzyme inhibitors, angiotensin receptor antagonists, renin inhibitors and mineralocorticoid receptor antagonists. These drugs have been successfully tested in numerous trials and in different clinical settings. The original indications of renin-angiotensin-aldosterone system blockers have progressively expanded from the advanced stages to the earlier stages of cardiorenal continuum. To optimize the degree of blockade of renin-angiotensin-aldosterone system, dose uptitrations of angiotensin-converting enzyme inhibitors and angiotensin receptor antagonists or the use of a dual blockade, initially identified with the combination of angiotensin-converting enzyme inhibitors and angiotensin receptor antagonists, have been proposed. The data from the Ongoing Telmisartan Alone and in Combination with Ramipril Global Endpoint Trial (ONTARGET) study do not support this specific dual blockade approach. However, the dual blockade of angiotensin-converting enzyme inhibitors/angiotensin receptor antagonists with direct renin inhibitors is currently under investigation while that based on an aldosterone blocker with any of the previous three drugs requires more evidence beyond heart failure. In this review, we revisited potential advantages of dual blockade of renin-angiotensin-aldosterone system in arterial hypertension and diabetes.