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Suche nach „[2012]“ hat 123 Publikationen gefunden
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    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    A. Abrutis, T. Blomberg, Günther Ruhl, P. Baumann, M. Lukosius, C. Wenger, G. Lupina

    Electrical and Morphological Properties of ALD and AVD Grown Perovskite-Type Dielectrics and Their Stacks for Metal-Insulator-Metal Applications

    ECS Journal of Solid State Science and Technology, vol. 1, no. 1

    2012

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    T. Blomberg, Günther Ruhl, M. Lukosius, S. Kubotsch, C. Wenger, C. Baristiran Kaynak

    Properties of atomic-vapor and atomic-layer deposited Sr, Ti, and Nb doped Ta2O5 Metal–Insulator–Metal capacitors

    Thin Solid Films, vol. 520, no. 14, pp. 4576-4579

    2012

    DOI: 10.1016/j.tsf.2011.10.199

    Abstract anzeigen

    Atomic Vapor Deposition and Atomic Layer Deposition techniques were applied for the depositions of Ta2O5, Ti–Ta–O, Sr–Ta–O and Nb–Ta–O oxide films for Metal–Insulator–Metal (MIM) capacitors used in back-end of line for Radio Frequency applications. Structural and electrical properties were studied. Films, deposited on the TiN bottom electrodes, in the temperature range of 225–400 °C, were amorphous, whereas the post deposition annealing at 600 °C resulted in the crystallization of Nb–Ta–O films. Electrical properties of MIM structures, investigated after sputtering Au top electrodes, revealed that the main characteristics were different for each oxide. On one hand, Ti–Ta–O based MIM capacitors possessed the highest dielectric constant (50), but the leakages currents were also the highest (~ 10− 5 A/cm2 at − 2 V). On the other hand, Sr–Ta–O showed the lowest leakage current densities (~ 10− 9 A/cm2 at − 2 V) as well as the smallest capacitance–voltage nonlinearity coefficients (40 ppm/V2), but the dielectric constant was the smallest (20). The highest nonlinearity coefficients (290 ppm/V2) were observed for Nb–Ta–O based MIM capacitors, although relatively high dielectric constant (40) and low leakage currents (~ 10− 7 A/cm2 at − 2 V) were measured. Temperature dependent leakage-voltage measurements revealed that only Sr–Ta–O showed no dependence of leakage current as a function of the measurement temperature.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    Günther Ruhl, A. Gschwandtner, W. Lehnert

    Plasma enhanced atomic layer batch processing of aluminum doped titanium dioxide

    Journal of Vacuum Science & Technology A, vol. 30, no. 1

    2012

    DOI: 10.1116/1.3670876

    Abstract anzeigen

    Among many promising high-k dielectrics, TiO2 is an interesting candidate because of its relatively high k value of over 40 and its easy integration into existing semiconductor manufacturing schemes. The most critical issues of TiO2 are its low electrical stability and its high leakage current density. However, doping TiO2 with Al has shown to yield significant improvement of layer quality on Ru electrodes [S. K. Kim et al., Adv. Mater. 20, 1429 (2008)]. In this work we investigated if atomic layer deposition (ALD) of Al doped TiO2 is feasible in a batch system. Electrical characterizations were done using common electrode materials like TiN, TaN, or W. Additionally, the effect of plasma enhanced processing in this reactor was studied. For this investigation a production batch ALD furnace has been retrofitted with a plasma source which can be used for post deposition anneals with oxygen radicals as well as for directly plasma enhanced ALD. After evaluation of several Ti precursors a deposition process for AlTiOx with excellent film thickness and composition uniformity was developed. The effects of post deposition anneals, Al2O3 interlayers between electrode and TiO2, Al doping concentration, plasma enhanced deposition and electrode material type on leakage current density are shown. An optimized AlTiOx deposition process on TaN electrodes yields to leakage current density of 5 × 10−7 A/cm2 at 2 V and k values of about 35. Thus, it could be demonstrated that a plasma enhanced batch ALD process for Al doped TiO2 is feasible with acceptable leakage current density on a standard electrode material.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    H. Ninokata, Rui Li, M. Mori

    A calculation methodology proposed for liquid droplet impingement erosion

    Nuclear Engineering and Design, vol. 242, pp. 157-163

    2012

    DOI: 10.1016/j.nucengdes.2011.10.004

    Abstract anzeigen

    Bent pipe wall thinning has been often found at the elbow of the drain line and the high-pressure secondary feed-water bent pipe in nuclear reactors. Liquid droplet impingement (LDI) erosion could be regarded as one of the major causes and is a significant issue of the thermal hydraulics and structural integrity in aging and life extension for nuclear power plant safety. In this paper a computational methodology is established for simulation of LDI erosion using computational fluid dynamics (CFD) simulation and theoretical calculation. Two-phase flow numerical simulations are conducted for standard elbow geometry, typically with the pipe diameter of 170 mm. This computational fluid model is built up by incompressible Reynolds Averaged Navier–Stoke equations using standard k–ɛ turbulence model and the SIMPLE algorithm, and the numerical droplet model adopts the Lagrangian approach. The turbulence damping in vapor–droplets flow is theoretically analyzed by a damping function on the energy spectrum basis of single phase flow. Locally, a droplet impact angle function is employed to determine the overall erosion rate. Finally, the overall and local investigations are combined to purpose a general methodology of LDI erosion prediction procedure, which has been complemented into CFD code. Based on our more physical computational results, comparison with an available accident data was made to prove that our methodology could be an appropriate way to simulate and predict the bent pipe wall thinning phenomena.

    GesundAngewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    S. Knappe, Agnes Nocon, K. Beesdo-Baum, H.-U. Wittchen

    Re-examining the differential familial liability of agoraphobia and panic disorder

    Depression and Anxiety, vol. 29, no. 11, pp. 931-938

    2012

    DOI: 10.1002/da.21975

    Abstract anzeigen

    BACKGROUND: Controversy surrounds the question of whether agoraphobia (AG) exists as an independent diagnostic entity apart from panic. In favor of this position, AG without panic disorder (PD) in parents was found being unrelated to offsprings' risk for AG or PD, albeit it may enhance the familial transmission of PD (Nocon et al., Depress Anxiety 2008;25:422-434). However, a recent behavioral genetic analysis (Mosing et al., Depress Anxiety 2009;26:1004-1011) found an increased risk for both PD and AG in siblings of those with AG without PD, casting doubt on whether AG exists independently of PD. Convincing evidence for either position notably requires considering also other anxiety disorders to establish the position of AG relative to the panic/anxiety spectrum. METHODS: Familial transmission of panic attacks (PAs), PD, and AG was examined in a 10-year prospective-longitudinal community study of 3,021 adolescents and young adults including completed direct and indirect information on parental psychopathology. Standardized diagnostic assessments using the Munich-Composite International Diagnostic Interview allowed generating exclusive diagnostic groups independent from diagnostic hierarchy rules. RESULTS: Parental PD without AG was associated with an increased risk for PA and PD+AG, but not for PD without AG or AG without PD in offspring. Parental AG without PD was unrelated to the offsprings' risk for PA, exclusive PD or AG, or PD+AG. Findings were largely unaffected by adjustment for other offspring or parental anxiety disorders. CONCLUSIONS: Findings provide further evidence for the independence of AG apart from the PD spectrum.

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Marcus Herntrei, S. Pichler, H. Pechlaner

    From mobility space towards experience space: implications for the competitiveness of destinations

    Tourism Review, vol. 67, no. 2, pp. 34-44

    2012

    Abstract anzeigen

    Destinations are embedded in a competitive environment, in which quality and service alone do not satisfy the customer, and are no longer useful for differentiation. Thus experiences, as a source of customer value, are gaining importance in destination management. Experiences are provided at isolated attraction points, rather than as networks within spaces. Thus, destinations are forced to provide emotional experiences along the entire tourist service chain within the destination space. The challenge is to transform the space of the tourist's movements into one of experiences. The main purpose of this study is to develop a conceptual framework for the mobility offer in the destination, the realised mobility and the relative experience.

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Marcus Herntrei, M. Volgger, S. Pichler, H. Pechlaner

    From destination management towards governance of regional innovation systems – the case of South Tyrol, Italy

    Tourism Review, vol. 67, no. 2, pp. 22-33

    2012

    Abstract anzeigen

    In South Tyrol, Italy, and in other alpine destinations, the role of publicly financed tourism destination management has traditionally a strong focus on image promotion. In South Tyrol, three further regional public management organisations have recently been founded with the aim of developing the location by expanding its innovation and export capabilities, especially for small to medium‐sized enterprises (SMEs). All four public organisations aim to increase the competitiveness of local companies through creating a more efficient management of destination and location. The cooperation between the four organisations and further public and private regional stakeholders might be regarded as a regional innovation system (RIS). This paper aims to analyse and discuss within the frame of a case study, the structure of the cooperation between the four public organisations and if it can be regarded as a developing South Tyrolean regional innovation system. The paper aims to focus on the roles of the four organisations, possible synergies and implications for regional governance.

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Marcus Herntrei, M. Volgger, H. Pechlaner

    Destination management organizations as interface between destination governance and corporate governance

    Anatolia - An International Journal of Tourism and Hospitality Research, vol. 23, no. 2, pp. 151-168

    2012

    Abstract anzeigen

    Destination management organizations (DMOs) play a major role in managing destination networks and in fostering cooperation between destination actors. DMOs are central figures in the governance of tourism destinations. However, being organizations, their operations are also judged according to their organizational efficiency and effectiveness. This paper applies the concept of corporate governance to capture these internal performance indicators, and investigates its relationship to the external performance of DMOs as promoters of cooperation. Very few studies have considered such inter-dependencies between DMO performance and destination performance; and even fewer have explicitly analysed the relationships between the destination governance and the corporate governance of DMOs. Therefore, this research uses an exploratory, theory-generating case study approach to develop testable hypotheses for future generalizing research attempts. Semi-structured interviews were conducted with several destination actors, and qualitatively analysed using the GABEK toolset. From this qualitative analysis four hypotheses emerged, which generally indicate a positive link between a DMO's corporate governance characterized by a broad stakeholder involvement, an efficient way of working, visible signs of performance on the one hand, and both the DMO acceptance and the level of cooperation in the destination on the other hand.

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Bernhard Bleyer

    Die Lebensqualität der Anderen

    Misericordia, vol. 64, no. 5, pp. 3-4

    2012

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Bernhard Bleyer

    Michael Fischer: Das konfessionelle Krankenhaus. Begründung und Gestaltung aus theologischer und unternehmerischer Perspektive

    Buchbesprechung

    Zeitschrift für evangelische Ethik, vol. 56, pp. 218-219

    2012

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    B. Laux, Bernhard Bleyer

    Anwälte der Öffentlichkeit. Über Zivilgesellschaft, Befähigungsarbeit und den Auftrag der Kirchen

    Ethik und Gesellschaft, no. 2, pp. 1-26

    2012

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    B. Laux, Bernhard Bleyer

    Was kaufst Du? Grundlegende Aspekte der Konsumentenethik

    Regensburger RU-Notizen, vol. 32, no. 1, pp. 18-23

    2012

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    K. Sadowski, Doris Eberhardt

    Umsetzung des § 87b SGB XI aus Sicht der Betreuungsassistenten

    Pflegezeitschrift, vol. 65, no. 2, pp. 90-95

    2012

    Angewandte Gesundheitswissenschaften

    Zeitschriftenartikel

    Y. Hiob, G. Regele, K. Berktold, Doris Eberhardt, B. Meding

    Theaterpädagogik als Weg zur kultursensiblen Pflege. Übungen zum Thema „Sich fremd fühlen“ und „Anders sein“

    PADUA - Die Fachzeitschrift für Pflegepädagogik, Patientenedukation und -bildung, vol. 7, no. 4, pp. 205-210

    2012

    Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Heribert Popp, Silke Kreupl, W. Mößlein

    Die Wissensbilanz

    wisu - das wirtschaftsstudium, no. 5

    2012

    DigitalElektrotechnik und Medientechnik

    Zeitschriftenartikel

    H. Meer, A. Grillo, L. Lima, E. Pujol, J. Barros, M. Fiedler, A. Lentini, H. Hauff, K. Szczypiorski, G. Marias, W. Mazurczyk, R. Herkenhoener, Andreas Fischer, J. Vilela, T.T.V. Vinhoza, P. Oliveira, G. Polyzos, C. Lorentzen

    Security and Privacy issues for the Network of the Future

    Security and Communication Networks, vol. 5, no. 9, pp. 987-1005

    2012

    DOI: 10.1002/sec.384

    Abstract anzeigen

    The vision towards the Network of the Future cannot be separated from the fact that today’s networks, and networking services are subject to sophisticated and very effective attacks. When these attacks first appeared, spoofing and distributed denial-of-service attacks were treated as apocalypse for networking. Now, they are considered moderate damage, whereas more sophisticated and inconspicuous attacks, such as botnets activities, might have greater and far reaching impact. As the Internet is expanding to mobile phones and ‘smart dust’ and as its social coverage is liberalized towards the realization of ubiquitous computing (with communication), the concerns on security and privacy have become deeper and the problems more challenging than ever. Re-designing the Internet as the Network of the Future is self-motivating for researchers, and security and privacy cannot be provided again as separate, external, add-on, solutions. In this paper, we discuss the security and privacy challenges of the Network of the Future and try to delimit the solutions space on the basis of emerging techniques. We also review methods that help the quantification of security and privacy in an effort to provide a more systematic and quantitative treatment of the area in the future.

    DigitalElektrotechnik und Medientechnik

    Zeitschriftenartikel

    H. Meer, X. Hesselbach, Andreas Fischer, J. Botero

    Optimal mapping of virtual networks with hidden hops

    Telecommunications Systems: Special Issue on Future Internet Services and Architectures (Trends and Visions), vol. 51, no. 4, pp. 273-282

    2012

    DOI: 10.1007/s11235-011-9437-0

    Abstract anzeigen

    Network Virtualization has emerged as a so-lution for the Internet inability to address the requiredchallenges caused by the lack of coordination amongInternet service providers for the deployment of newservices. The allocation of resources is one of the mainproblems in network virtualization, mainly in the map-ping of virtual nodes and links to specific substratenodes and paths, also known as the virtual networkembedding problem. This paper proposes an algorithmbased on optimization theory, to map the virtual linksand nodes requiring a specific demand, looking for themaximization of the spare bandwidth and spare CPUin the substrate network, taking into account the band-width demanded by thehidden hopswhen a virtuallink is mapped. The components of the virtual networks(nodes and links) that do not ask for an specific demandare then allocated following a fairness criteria.

    DigitalElektrotechnik und Medientechnik

    Zeitschriftenartikel

    H. Meer, D. Schlosser, X. Hesselbach, Andreas Fischer, M. Duelli, J. Botero

    Energy Efficient Virtual Network Embedding

    IEEE Communications Letters, vol. 16, no. 5, pp. 756-759

    2012

    DOI: 10.1109/LCOMM.2012.030912.120082

    Abstract anzeigen

    Waste of energy due to over-provisioning and overdimensioning of network infrastructures has recently stimulated the interest on energy consumption reduction by Internet Service Providers (ISPs). By means of resource consolidation, network virtualization based architectures will enable energy saving. In this letter, we extend the well-known virtual network embedding problem (VNE) to energy awareness and propose a mixed integer program (MIP) which provides optimal energy efficient embeddings. Simulation results show the energy gains of the proposed MIP over the existing cost-based VNE approach.

    Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Zeitschriftenartikel

    Michael Drexl

    Rich Vehicle Routing in Theory and Practice

    Logistics Research, vol. 5, no. 1‐2, pp. 47-63

    2012

    DOI: 10.1007/s12159-012-0080-2

    Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Zeitschriftenartikel

    Michael Drexl

    Synchronization in Vehicle Routing‐-A Survey of VRPs with Multiple Synchronization Constraints

    Transportation Science, vol. 46, no. 3, pp. 297-316

    2012

    DOI: 10.1287/trsc.1110.0400