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Publikationen von Professorinnen und Professoren der HAW Hamburg

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Alle : 1982, ... , 2017, 2018, 2019, 2020
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Alle : A, À, B, C, D, E, F, G, H, I, J, K, L, M, N, O, Ö, P, Q, R, S, T, U, V, W, Y, Z 
Alle : W. Biersack, ... , Wetzel, Weyand, Weyhe, ... , Wöste 
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Zeitschriftenbeiträge:

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Emmanuel Baccelli, Cenk Gündogan, Oliver Hahm, Peter Kietzmann, Martine Lenders, Hauke Petersen, Kaspar Schleiser, Thomas C. Schmidt und Matthias Wählisch
RIOT: an Open Source Operating System for Low-end Embedded Devices in the IoT
IEEE Internet of Things Journal, 5(6):4428--4440
Dezember 2018

Marker: TI-I

Zusammenfassung: As the Internet of Things (IoT) emerges, compact operating systems are required on low-end devices to ease development and portability of IoT applications. RIOT is a prominent free and open source operating system in this space. In this paper, we provide the first comprehensive overview of RIOT. We cover the key components of interest to potential developers and users: the kernel, hardware abstraction, and software modularity, both conceptually and in practice for various example configurations. We explain operational aspects like system boot-up, timers, power management, and the use of networking. Finally, the relevant APIs as exposed by the operating system are discussed along with the larger ecosystem around RIOT, including development and open source community aspects.

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Johanna Buchcik, Uta Gaidys, Joachim Westenhöfer, Katrin Kern und Corinna Petersen-Ewert
Pflegeschulungen für Angehörige mit Migrationshintergrund und Kompetenzbildungen für professionel Pflegende
Prävention und Gesundheitsförderung,
17 April 2018

Marker: WS-PM

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Simon Ressel, Lucas Holtz, Niclas Janshen, Florian Bill, Antonio Chica, Thomas Flower, Claudia Weidlich und Thorsten Struckmann
State of charge monitoring of vanadium redox flow batteries using half cell potentials and electrolyte density
Journal of Power Sources, 378:776-783
28 Februar 2018

Marker: TI-MP

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Joachim Westenhoefer, Robert von Katzler, Hans-Joachim Jensen, Birgit-Christiane Zyriax, Bettina Jagemann, Volker Hardt und Marcus Oldenburg
Cultural differences in food and shape related attitudes and eating behavior are associated with differences of Body Mass Index in the same food environment: cross-sectional results from the Seafarer Nutrition Study of Kiribati and European seafarers on merchant ships
BMC Obesity, 5:1
24 Januar 2018

Schlüsselwörter: Obesity, Pacific islanders, Body shape, Eating behavior, Disinhibition, Seafarer

Marker: LS-GW

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Andreas Reuter, Randy Bush, Italo Cunha, Ethan Katz-Bassett, Thomas C. Schmidt und Matthias Wählisch
Towards a Rigorous Methodology for Measuring Adoption of RPKI Route Validation and Filtering
Sigcomm Computer Communication Review, 48(1):19–27
Januar 2018

Marker: TI-I

Zusammenfassung: A proposal to improve routing security---Route Origin Authorization (ROA)---has been standardized. A ROA specifies which network is allowed to announce a set of Internet destinations. While some networks now specify ROAs, little is known about whether other networks check routes they receive against these ROAs, a process known as Route Origin Validation (ROV). Which networks blindly accept invalid routes? Which reject them outright? Which de-preference them if alternatives exist? Recent analysis attempts to use uncontrolled experiments to characterize ROV adoption by comparing valid routes and invalid routes. However, we argue that gaining a solid understanding of ROV adoption is impossible using currently available data sets and techniques. Our measurements suggest that, although some ISPs are not observed using invalid routes in uncontrolled experiments, they are actually using different routes for (non-security) traffic engineering purposes, without performing ROV. We conclude with a description of a controlled, verifiable methodology for measuring ROV and present three ASes that do implement ROV, confirmed by operators.

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Ulfia A. Lenfers, Julius Weyl und Thomas Clemen
Firewood Collection in South Africa: Adaptive Behavior in Social-Ecological Models
Land, 7(3):97
2018
ISSN: 2073-445X

Schlüsselwörter: Bushbuckridge,Canyon Biosphere,Kruger,MARS,adaptive behavior,ecological systems,firewood collection,goal,oriented action planning/GOAP,savanna,social,to

Zusammenfassung: \textlessp\textgreaterDue to the fact that the South Africa's savanna landscapes are under changing conditions, the previously sustainable firewood collection system in rural areas has become a social-ecological factor in questions about landscape management. While the resilience of savannas in national parks such as Kruger National Park (KNP) in South Africa has been widely acknowledged in ecosystem management, the resilience of woody vegetation outside protected areas has been underappreciated. Collecting wood is the dominant source of energy for rural households, and there is an urgent need for land management to find sustainable solutions for this complex social-ecological system. However, the firewood collection scenario is only one example, and stands for all “human-ecosystem service” interactions under the topic of over-utilization, e.g., fishery, grazing, harvesting. Agent-based modeling combined with goal-oriented action planning (GOAP) can provide fresh insights into the relationship between individual needs of humans and changes in land use. At the same time, this modeling approach includes adaptive behavior under changing conditions. A firewood collection scenario was selected for a proof-of-concept comprising households, collectors, ecosystem services and firewood sites. Our results have shown that, even when it is predictable what a single human agent will do, massive up-scaling is needed in order to understand the whole complexity of social-ecological systems. Under changing conditions, such as climate and an increasing population, fair distribution of natural goods become an important issue.\textless/p\textgreater

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Valerie Andrees, Beke Freyer, Ingrid Borgmeier, Hans-Jürgen Galle und Joachim Westenhöfer
Ehrenamtliche in der Flüchtlingshilfe – sind gesundheitsfördernde Maßnahmen (durch den ÖGD) notwendig?
Gesundheitswesen, 80(286-292)
2018

Marker: LS-GW

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Birgit-Christiane Zyriax, Robert von Katzler, Bettina Jagemann, Joachim Westenhoefer, Hans-Joachim Jensen, Volker Harth und Marcus Oldenburg
Food offerings on board and dietary intake of European and Kiribati seafarers - Cross-sectional data from the Seafarer Nutrition Study
Journal of Occupational Medicine and Toxicology, 13:9
2018

Marker: LS-GW

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Y. Saalberg und M. Wolff
Multivariate Analysis as a Tool to Identify Concentrations from Strongly Overlapping Gas Spectra
Sensors 18 (5), (1562)
2018

Marker: TI-I

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K. Landenfeld, J. Priebe und M. Wendt
Möglichkeiten zur Auffrischung der schulischen Kenntnisse durch den Einsatz einer Online-Lernumgebung
Greifswalder Beiträge zur Hochschullehre, (Erleichterung der Studieneingangsphase)
2018
ISSN: 978-3-36006-467-2

Marker: TI-I

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Letzte Änderung: 23.01.15

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