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Publikationen von Professorinnen und Professoren der HAW Hamburg

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Zeitschriftenbeiträge:

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Kristina Woock und Ralf Schattschneider
BasisQ Demenz – Projektstatus
Landesinitiative Leben mit Demenz - Newsletter 1/15,
Dezember 2015

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Susanne Busch und Ralf Schattschneider
Demenz geht uns alle an! Modellprojekt an der HAW Hamburg gibt Antworten auf gesellschaftliche Herausforderung
HAW Themendienst 2015,
Dezember 2015

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Wolfgang Willaschek
Essay: „Das“ muss man sehen, um es zu hören - Von der Magie des Autographen – oder: Ist Mozart ein Genie, dann auch und vor allem als Mathematiker
Hamburgische Staatsoper,
Dezember 2015

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Victoria Bürgin
Kritik von „Wagner sucht“ mit Kostümen von Florian Parkitny und Anna Pelz
Opernnetz,
Dezember 2015

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R. C. Fandl und T. Held
Nachhaltige Entwicklungspartnerschaften – Entwicklung eines Schätzmodells zur frühzeitigen Bewertung von CO2- und Kosten-Einsparpotenzialen am Beispiel der deutschen Gießereiindustrie und ihren Kunden
Zeitschrift für wirtschaftliche Fertigung, (12/2015):818-822
Dezember 2015

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Christian Stark
Werkzeugmaschinensteuerungen der neuesten Generation im Institut für Produktionstechnik - Vorbereitungen auf Industrie 4.0
Dezember 2015

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Xiaozhu Zhang, Christian Kuehn und Sarah Hallerberg
Predictability of critical transitions
Phys. Rev. E, 92:052905
6 November 2015

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Meisam Mirahsan, Rainer Schoenen und Halim Yanikomeroglu
HetHetNets: Heterogeneous traffic distribution in heterogeneous wireless cellular networks
Journal on Selected Areas in Communications, Special Issue on Recent Advances in Heterogeneous Cellular Networks, 33(10):2252-2265
1 Oktober 2015

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Zusammenfassung: ABSTRACT: A recent approach in modeling and analysis of the supply and demand in heterogeneous wireless cellular networks has been the use of two independent Poisson point processes (PPPs) for the locations of base stations (BSs) and user equipments (UEs). This popular approach has two major shortcomings. First, although the PPP model may be a fitting one for the BS locations, it is less adequate for the UE locations mainly due to the fact that the model is not adjustable (tunable) to represent the severity of the heterogeneity (non-uniformity) in the UE locations. Besides, the independence assumption between the two PPPs does not capture the often-observed correlation between the UE and BS locations. This paper presents a novel heterogeneous spatial traffic modeling which allows statistical adjustment. Simple and non-parameterized, yet sufficiently accurate, measures for capturing the traffic characteristics in space are introduced. Only two statistical parameters related to the UE distribution, namely, the coefficient of variation (the normalized second-moment), of an appropriately defined inter-UE distance measure, and correlation coefficient (the normalized cross-moment) between UE and BS locations, are adjusted to control the degree of heterogeneity and the bias towards the BS locations, respectively. This model is used in heterogeneous wireless cellular networks (HetNets) to demonstrate the impact of heterogeneous and BS-correlated traffic on the network performance. This network is called HetHetNet since it has two types of heterogeneity: heterogeneity in the infrastructure (supply), and heterogeneity in the spatial traffic distribution (demand).

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Meisam Mirahsan, Rainer Schoenen, Halim Yanikomeroglu, Gamini Senarath und Ngoc Dung-Dao
User-in-the-loop for hethetnets with backhaul capacity constraints
IEEE Transactions on Wireless Communications,
1 Oktober 2015
english

Schlüsselwörter: wireless networks, stochastic geometry, user in the loop

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Zusammenfassung: ABSTRACT: A popular method to model heterogeneous networks is the use of two independent homogeneous Poisson point processes to locate UEs and BSs with unlimited backhaul capacity. Despite the analytical tractability, this approach is far from accurate. First, the distribution of UEs in real scenarios is neither homogeneous nor independent of BSs. Besides, the assumption of unlimited capacity for backhaul connections is optimistic, especially in the future 5G HetNets with small cells. In this article, we propose a novel modeling approach for heterogeneous networks with heterogeneous spatial traffic distribution (HetHetNets). Specifically, in the proposed model, a particular ratio of UEs are collocated with the BSs while the rest of UEs are independently and homogeneously distributed in the network. Moreover, the proposed model presumes backhaul connections with constrained capacity. We study the impact of this more realistic network modeling on the effectiveness of the spatial user-in-the-loop (UIL) schemes in HetHetNets. Spatial UIL assumes that (some) UEs can be influenced by the operator to move in the network. Finally, we propose a new objective for the UIL mechanism that takes into account the impact of the BS loads and the backhaul capacities on the network performance.

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T. Cirsovius
Sozialversicherungsrecht und Bürokratieabbau – Zur Frage der Prüfungsbefugnisse des Nationalen Normenkontrollrats gegenüber den Sozialversicherungsträgern
Neue Zeitschrift für Sozialrecht, :841ff.
Oktober 2015
ISSN: 0941-7915

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Letzte Änderung: 23.01.15

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