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Publikationen von Professorinnen und Professoren der HAW Hamburg

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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.

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

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)

Marker: LS-GW

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

Marker: LS-GW

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)
ISSN: 978-3-36006-467-2

Marker: TI-I

Johanna Buchcik, Uta Gaidys, Joachim Westenhöfer, Katrin Kern und Corinna Petersen-Ewert
Pflegeschulungen für Angehörige mit Migrationshintergrund und Kompetenzbildungen für professionell Pflegende
Prävention und Gesundheitsförderung, 13:345-352

Marker: LS-GW; WS-PM

Janine Topp, Joachim Westenhöfer, Isabelle Scholl und Pola Hahlweg
Shared decision-making in physical therapy: a cross-sectional study on physiotherapists' knowledge, attitudes and self-reported use
Patient Education and Counseling, 10:346-351

Schlüsselwörter: Shared decision making; Patient-centered care; Communication; Physical therapy; Health services research; Online survey

Marker: LS-GW

Zusammenfassung: Objective: This study aimed a) to investigate knowledge, attitudes, and self-reported use of shared decision-making (SDM) among physiotherapists in Germany, b) to explore their association with demographic characteristics, and c) to assess barriers to the implementation of SDM. Methods: We assessed above mentioned domains using an online survey. Two-level logistic regression models were used to examine factors associated with knowledge, attitudes and self-reported use of SDM. Results: 60.5% of a total sample of 357 participants reported to have had no knowledge on SDM before participating in the survey. Attitudes towards SDM were mostly positive, half of all participants expressed a preference for SDM. About two thirds of all participants reported to use a rather paternalistic approach in routine care. Knowledge, attitudes, and self-reported use of SDM were associated with several demographic characteristics. Conclusion: SDM was perceived as an appropriate concept in physiotherapy. However, missing knowledge and limited self-reported use of SDM in routine care on the one hand and positive attitudes towards SDM on the other hand indicate a need for action. Practice implications: In order to emphasize the use of SDM in physiotherapy efforts need to be undertaken in research, clinical practice and health policy.

Rune Bahlo, Andrew Hursthouse, Anika Sievers und Thomas Willner
Unexplored Areas of Direct Solvolytic Liquefaction of Lignocellulosic Biomass
Chemie Ingenieur Technik, (90 (1-2)):47-55

Marker: LS-VT


Edmund Weitz
Konkrete Mathematik (nicht nur) für Informatiker
Verlag: Springer Spektrum, Wiesbaden
10 August 2018
ISBN: 978-3-658-21564-4

Marker: DMI-MT

Corinna Petersen-Ewert, Uta Gaidys, Johanna Buchcik, Katrin Kern und Joachim Westenhöfer
Transkulturell pflegen. Handbuch zur Schulung von Pflegefachkräften und pflegenden Angehörigen mit Migrationshintergrund
Verlag: Springer, Berlin
ISBN: 987-3-662-54749-6

Marker: WS-PM; LS-GW

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Letzte Änderung: 23.01.15

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