@article{7054, author = {{Schuster, J and Kim, T Y and Batke, E and Reuter, Dirk and Wieck, A D}}, issn = {{2053-1591}}, journal = {{Materials Research Express}}, number = {{5}}, publisher = {{IOP Publishing}}, title = {{{Electric field distribution and exciton recombination line shape in GaAs}}}, doi = {{10.1088/2053-1591/3/5/056201}}, volume = {{3}}, year = {{2016}}, } @article{7055, author = {{Wecker, Tobias and Callsen, Gordon and Hoffmann, Axel and Reuter, Dirk and As, Donat Josef}}, issn = {{0021-4922}}, journal = {{Japanese Journal of Applied Physics}}, number = {{5S}}, publisher = {{Japan Society of Applied Physics}}, title = {{{Photoluminescence excitation spectroscopy of excited states of an asymmetric cubic GaN/Al0.25Ga0.75N double quantum well grown by molecular beam epitaxy}}}, doi = {{10.7567/jjap.55.05fg01}}, volume = {{55}}, year = {{2016}}, } @article{7056, author = {{Onur, A. R. and de Jong, J. P. and O'Shea, D. and Reuter, Dirk and Wieck, A. D. and van der Wal, C. H.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{16}}, publisher = {{American Physical Society (APS)}}, title = {{{Stabilizing nuclear spins around semiconductor electrons via the interplay of optical coherent population trapping and dynamic nuclear polarization}}}, doi = {{10.1103/physrevb.93.161204}}, volume = {{93}}, year = {{2016}}, } @article{7057, author = {{Riha, Christian and Chiatti, Olivio and Buchholz, Sven S. and Reuter, Dirk and Wieck, Andreas D. and Fischer, Saskia F.}}, issn = {{1862-6300}}, journal = {{physica status solidi (a)}}, number = {{3}}, pages = {{571--581}}, publisher = {{Wiley}}, title = {{{Heat flow, transport and fluctuations in etched semiconductor quantum wire structures}}}, doi = {{10.1002/pssa.201532551}}, volume = {{213}}, year = {{2016}}, } @article{7068, author = {{Sokolov, P. S. and Petrov, M. Yu. and Mehrtens, T. and Müller-Caspary, K. and Rosenauer, A. and Reuter, Dirk and Wieck, A. D.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{4}}, publisher = {{American Physical Society (APS)}}, title = {{{Reconstruction of nuclear quadrupole interaction in (In,Ga)As/GaAs quantum dots observed by transmission electron microscopy}}}, doi = {{10.1103/physrevb.93.045301}}, volume = {{93}}, year = {{2016}}, } @article{714, abstract = {{The Service Programming and Orchestration for Virtualised Software Networks (SONATA) project targets both the flexible programmability of software networks and the optimisation of their deployments by means of integrating Development and Operations in order to accelerate industry adoption of software networks and reduce time-to-market for networked services. SONATA supports network function chaining and orchestration, making service platforms modular and easier to customise to the needs of different service providers, and introduces a specialised Development and Operations model for supporting developers.}}, author = {{Karl, Holger and Dräxler, Sevil and Peuster, Manuel and Galis, Alex and Bredel, Michael and Ramos, Aurora and Martrat, Josep and Siddiqui, Muhammad Shuaib and van Rossem, Steven and Tavernier, Wouter and Xilouris, George}}, issn = {{2161-3915}}, journal = {{Transactions on Emerging Telecommunications Technologies}}, number = {{9}}, pages = {{1206--1215}}, publisher = {{Wiley-Blackwell}}, title = {{{DevOps for network function virtualisation: an architectural approach}}}, doi = {{10.1002/ett.3084}}, volume = {{27}}, year = {{2016}}, } @article{726, author = {{Wette, Philip and Karl, Holger}}, journal = {{Computer Communications}}, pages = {{45----58}}, title = {{{DCT²Gen: A traffic generator for data centers}}}, doi = {{10.1016/j.comcom.2015.12.001}}, year = {{2016}}, } @inproceedings{728, author = {{Schwabe, Arne and A. Aranda-Gutierrez, Pedro and Karl, Holger}}, booktitle = {{Proceedings of the 2016 Applied Networking Research Workshop, {ANRW} 2016, Berlin, Germany, July 16, 2016}}, pages = {{26----31}}, title = {{{Composition of SDN applications: Options/challenges for real implementations}}}, doi = {{10.1145/2959424.2959436}}, year = {{2016}}, } @inproceedings{729, author = {{Doriguzzi Corin, Roberto and A. Aranda-Gutierrez, Pedro and Rojas, Elisa and Karl, Holger and Salvadori, Elio}}, booktitle = {{12th International Conference on Network and Service Management, {CNSM} 2016, Montreal, QC, Canada, October 31 - Nov. 4, 2016}}, pages = {{209----215}}, title = {{{Reusability of software-defined networking applications: {A} runtime, multi-controller approach}}}, doi = {{10.1109/CNSM.2016.7818419}}, year = {{2016}}, } @inproceedings{730, abstract = {{Allocating resources to virtualized network functions and services to meet service level agreements is a challenging task for NFV management and orchestration systems. This becomes even more challenging when agile development methodologies, like DevOps, are applied. In such scenarios, management and orchestration systems are continuously facing new versions of functions and services which makes it hard to decide how much resources have to be allocated to them to provide the expected service performance. One solution for this problem is to support resource allocation decisions with performance behavior information obtained by profiling techniques applied to such network functions and services. In this position paper, we analyze and discuss the components needed to generate such performance behavior information within the NFV DevOps workflow. We also outline research questions that identify open issues and missing pieces for a fully integrated NFV profiling solution. Further, we introduce a novel profiling mechanism that is able to profile virtualized network functions and entire network service chains under different resource constraints before they are deployed on production infrastructure.}}, author = {{Peuster, Manuel and Karl, Holger}}, booktitle = {{Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016}}, location = {{Den Haag}}, pages = {{7----12}}, title = {{{Understand Your Chains: Towards Performance Profile-Based Network Service Management}}}, doi = {{10.1109/EWSDN.2016.9}}, year = {{2016}}, } @inproceedings{731, abstract = {{Traditional cellular networks are forced to remain active regardless of the actual amount of traffic that is currently produced/requested, with a clear waste of energy. Two-layer mobile networks with separated signalling and data layers have been recently proposed for energy savings in future implementations. These networks are able to switch off unneeded data cells completely while maintaining full coverage with their signalling cells, thus saving energy. In this demonstration, we showcase a testbed that uses Wi-Fi access points to emulate small cells of the data layer and a publicly available cellular connection as the signalling layer. We use off-the-shelf Android smartphones with an ad-hoc networking management module and a MultiPath TCP-enabled kernel to manage the Wi-Fi and cellular interfaces simultaneously. The testbed is used to demonstrate the general feasibility of this layered architecture and to facilitate experiments with network-wide resource optimization. }}, author = {{Peuster, Manuel and Karl, Holger and Enrico Redondi, Alessandro and Capone, Antonio}}, booktitle = {{IEEE Conference on Computer Communications Workshops, INFOCOM Workshops 2016, San Francisco, CA, USA, April 10-14, 2016}}, location = {{San Francisco}}, pages = {{1015----1016}}, title = {{{Demonstrating on-demand cell switching with a two-layer mobile network testbed}}}, doi = {{10.1109/INFCOMW.2016.7562232}}, year = {{2016}}, } @inproceedings{732, abstract = {{Elastic deployments of virtualized network functions~(VNF) can automatically scale the amount of used resources in relation to their workload. This is often done by starting new VNF instances or stopping old ones. A problem of these scale operations is that most network functions are stateful and their internal state is not automatically migrated when traffic is redistributed in the deployment. As a result, mechanisms are needed to exchange or migrate internal network function state between VNF instances. This paper presents a state management framework that creates a logically distributed state store on top of elastically deployed virtual network functions. We also introduce a novel programming model that provides both a local and a global view of the state to each VNF instance. We discuss the integration of our framework into existing network function virtualization architectures and compare the performance of our prototype to a centralized and a distributed state store solution.}}, author = {{Peuster, Manuel and Karl, Holger}}, booktitle = {{IEEE NetSoft Conference and Workshops, NetSoft 2016, Seoul, South Korea, June 6-10, 2016}}, location = {{Seoul}}, pages = {{6----10}}, title = {{{E-State: Distributed state management in elastic network function deployments}}}, doi = {{10.1109/NETSOFT.2016.7502432}}, year = {{2016}}, } @inproceedings{735, author = {{Auroux, Sébastien and Parruca, Donald and Karl, Holger}}, booktitle = {{27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, {PIMRC} 2016, Valencia, Spain, September 4-8, 2016}}, pages = {{1----6}}, title = {{{Joint real-time scheduling and interference coordination for wireless factory automation}}}, doi = {{10.1109/PIMRC.2016.7794927}}, year = {{2016}}, } @inproceedings{738, abstract = {{Virtualized network services consisting of multiple individual network functions are already today deployed across multiple sites, so called multi-PoP (points of presence) environments. This allows to improve service performance by optimizing its placement in the network. But prototyping and testing of these complex distributed software systems becomes extremely challenging. The reason is that not only the network service as such has to be tested but also its integration with management and orchestration systems. Existing solutions, like simulators, basic network emulators, or local cloud testbeds, do not support all aspects of these tasks. To this end, we introduce MeDICINE, a novel NFV prototyping platform that is able to execute production-ready network functions, provided as software containers, in an emulated multi-PoP environment. These network functions can be controlled by any third-party management and orchestration system that connects to our platform through standard interfaces. Based on this, a developer can use our platform to prototype and test complex network services in a realistic environment running on his laptop. }}, author = {{Peuster, Manuel and Karl, Holger and van Rossem, Steven}}, booktitle = {{IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)}}, location = {{Palo Alto}}, title = {{{MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP Environments}}}, doi = {{10.1109/NFV-SDN.2016.7919490}}, year = {{2016}}, } @article{7419, author = {{Steinhoff, Lena and Palmatier, Robert W.}}, journal = {{Journal of the Academy of Marketing Science}}, number = {{1}}, pages = {{88--107}}, title = {{{Understanding Loyalty Program Effectiveness: Managing Target and Bystander Effects}}}, volume = {{44}}, year = {{2016}}, } @article{7484, author = {{Hoffmann, Sandro Phil and Albert, Maximilian and Meier, Cedrik}}, issn = {{0749-6036}}, journal = {{Superlattices and Microstructures}}, pages = {{397--408}}, publisher = {{Elsevier BV}}, title = {{{Fabrication of fully undercut ZnO-based photonic crystal membranes with 3D optical confinement}}}, doi = {{10.1016/j.spmi.2016.07.006}}, volume = {{97}}, year = {{2016}}, } @inproceedings{7537, author = {{Bohl, Benjamin W. and Berndt, Axel and Senft, Björn}}, booktitle = {{Konferenzabstracts der 3. Tagung des Verbands "Digital Humanities im deutschsprachigen Raum e. V."}}, pages = {{103--107}}, title = {{{Formate als Sackgassen: Handlungsempfehlungen}}}, year = {{2016}}, } @inproceedings{7538, author = {{Greulich, Markus and Karthaus, Nicola and Oberthür, Simon and Schmidt, Ariane and Senft, Björn and Stog, Kristina}}, booktitle = {{Konferenzabstracts der 45. Jahrestagung der Deutschen Gesellschaft für Hochschuldidaktik}}, title = {{{Design Thinking als Methode in den Digital Humanities. Optionen interdisziplinären, forschenden Lehrens und Lernens}}}, year = {{2016}}, } @inproceedings{7539, author = {{Meise, Bianca and Mexin, Yevgen and Schloots, Franziska M. and Senft, Björn and Wawilow, Anastasia and Engels, Gregor and Meister, Dorothee M. and Müller-Lietzkow, Jörg and Szwillus, Gerd}}, booktitle = {{Tagungsband der Forschungsdaten in den Geisteswissenschaften (FORGE)}}, title = {{{Von implizitem Wissen zu nachhaltigen Systemanforderungen}}}, year = {{2016}}, } @inproceedings{7540, author = {{Meise, Bianca and Mexin, Yevgen and Schloots, Franziska M. and Senft, Björn and Wawilow, Anastasia}}, booktitle = {{Konferenzband: 1. interdisziplinären Konferenz zur Zukunft der Wertschöpfung}}, pages = {{14--15}}, publisher = {{Wulfsberg, Jens (Hrsg.) ; Univ. der Bundeswehr Hamburg, Laboratorium Fertigungstechnik}}, title = {{{Interdisziplinäre Forschung als Basis nachhaltiger Entscheidungsprozesse in der Softwareentwicklung}}}, year = {{2016}}, }