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Hager F.,Enterprise Platform and Integration Concepts | Kowark T.,Enterprise Platform and Integration Concepts | Uflacker M.,Enterprise Platform and Integration Concepts
Proceedings of NordDesign 2014 Conference, NordDesign 2014 | Year: 2014

Global design teams have different problems and needs throughout their projects. For the teams' coaches this can amount to a high workload acquainting themselves with new topics and preparing different coaching sessions for the teams. In this paper, we present a coaching seminar that lets alumni of a global design course give additional coaching sessions to current teams, and thus allows relieving the dedicated team coaches. The alumni are given the opportunity to share their knowledge and to prepare and run a coaching session. The teams can discuss their problems with peers and receive additional input when needed. To ensure our goals are met we evaluated the seminar through observations and questionnaires and present the results as well as derived changes to the next iteration of the seminar.


Treffer A.,Enterprise Platform and Integration Concepts
Technische Berichte des Hasso-Plattner-Instituts fur Softwaresystemtechnik an der Universitat Potsdam | Year: 2013

This report outlines research ideas that were formed over the last few months. We propose to use an in-memory database to store and access execution traces, especially of unit tests. Based on this, IDEs can be extended to search and visualize the data in the context of its source. This might help to increase developer productivity when understanding code or searching for bugs.


Hager F.,Enterprise Platform and Integration Concepts
Proceedings of International Design Conference, DESIGN | Year: 2016

This paper presents a case study on mobile application prototype testing based on interviews with employees of three major software companies. The case study discusses the current state of testing mobile application prototypes and respective challenges present in the companies. Naturally, researchers apply different methodologies in different companies and even in different departments of the same company. Therefore, the findings might not apply to all departments in the case study companies or to other companies from the software industry. However, the challenges and methods described by our interviewees match the findings from related literature as described in section 2. In general, researchers in the case companies are aware of the importance of context when testing and the benefits of testing in the real context. However, cost and time issues often require lab-based or even remote testing. Based on this situation and statements from the interviewees the paper presents a decision model aimed at finding the appropriate test context for a mobile application prototype, based on research goal, level of physical influence on the use case of the prototype and the type of application with regards to cognitive focus necessary and level of dependency between content and environment. Overall three possible test context classes for mobile studies are defined: • Class A - Testing without any mobile context (Lab-based or remote Studies) • Class B - Testing on an actual mobile device (can be lab-based or remote), and • Class C - testing on the actual device in the real context (Field Studies).


Treffer A.,Enterprise Platform and Integration Concepts
Technische Berichte des Hasso-Plattner-Instituts fur Softwaresystemtechnik an der Universitat Potsdam | Year: 2014

This paper presents how Omniscient Debuggers allow the advanced navigation of a program execution, which greatly improves the time required to find the source of a failure.


Schapranow M.-P.,Enterprise Platform and Integration Concepts | Hager F.,Enterprise Platform and Integration Concepts | Fahnrich C.,Enterprise Platform and Integration Concepts | Ziegler E.,SAP | Plattner H.,Enterprise Platform and Integration Concepts
International Journal on Advances in Life Sciences | Year: 2014

Latest medical diagnostics, such as genome sequencing, generate increasing amounts of "big medical data". Healthcare providers and medical experts are facing challenges outside of their original field of expertise, such as data processing, data analysis, or data interpretation. Specific software tools optimized for the use by the target audience as well as systematic processes for data processing and analysis in clinical and research environments are still missing. Our work focuses on the integration of data acquired from latest next-generation sequencing technology, its systematical processing, and instant analysis for researchers and clinicians in the course of precision medicine.We focus on the medical field of oncology to optimize the time spent on acquiring, combining, and analyzing relevant data to make well-informed treat-ment decisions based on latest international knowledge. We share our research results on building a distributed in-memory computing platform for genome data processing, which enables instantaneous analysis of genome data for the first time. For that, we present our technical foundation and building blocks of in-memory technology as well as business processes to integrate genome data analysis in the clinical routine. © 2014 by authors.


Schapranow M.-P.,Enterprise Platform and Integration Concepts | Plattner H.,Enterprise Platform and Integration Concepts
Proceedings - 2013 IEEE International Conference on Big Data, Big Data 2013 | Year: 2013

Costs and time required for sequencing of DNA and RNA declined through use of next generation sequencing technology, e.g. up to 30-times coverage reads are generated in less than two days. However, its interpretation and analysis is still a time-consuming process potentially taking weeks. In this work, we present a completely new architecture for processing and analyzing genome data. It builds on the in-memory database technology to eliminate time-consuming file-based data operations and to enable real-time data analysis. We found out that the use of in-memory technology as an integral component for genome data processing and its analysis significantly reduces time and costs to obtain relevant results, e.g. in the course of personalized medicine. © 2013 IEEE.


Fahnrich C.,Enterprise Platform and Integration Concepts | Schapranow M.-P.,Enterprise Platform and Integration Concepts | Plattner H.,Enterprise Platform and Integration Concepts
Proceedings - 2014 IEEE International Conference on Big Data, IEEE Big Data 2014 | Year: 2014

Next-generation sequencing enables whole genome sequencing within a few hours at a minimum of cost, entailing advanced medical applications such as personalized treatments. However, this recent technology imposes new challenges to alignment and variant calling as subsequent analysis steps. Compared to former sequencing, both must deal with an increasing amount of data to process at a significantly lower data quality - and are currently not capable of that. In this work, we focus on addressing these challenges for identifying Single Nucleotide Polymorphisms, i.e. SNP calling, in genome data as one subtask of variant calling. We propose the application of a column-store in-memory database for efficient data processing and apply the statistical model that is provided by the Genome Analysis Toolkit's UnifiedGenotyper. Comparisons with the UnifiedGenotyper show that our approach can exploit all computational resources available and accelerates SNP calling up to a factor of 22x. © 2014 IEEE.


Schapranow M.-P.,Enterprise Platform and Integration Concepts | Zeier A.,Enterprise Platform and Integration Concepts | Plattner H.,Enterprise Platform and Integration Concepts
Proceedings - 2010 4th International Conference on Network and System Security, NSS 2010 | Year: 2010

RFID implementations leverage competitive business advantages in processing, tracking and tracing of fast-moving goods. Most of them suffer fromsecurity threats and the resulting privacy risks as RFID technology was not designed for exchange of sensible data. Emerging global RFID-aided supply chains require open interfaces for data exchange of confidential business data between business partners. We present a mutual authentication model based on one-time passwords preventing tag access by unauthorized third parties. Compared to models using complex on-tag encryption methods our implementation focuses on reducing tag-manufacturing costs while increasing customers' acceptance for RFID technology. © 2010 IEEE.


Schapranow M.-P.,Enterprise Platform and Integration Concepts | Zeier A.,Enterprise Platform and Integration Concepts | Leupold F.,Enterprise Platform and Integration Concepts | Schubotz T.,Enterprise Platform and Integration Concepts
Proceedings - 2011 2nd International Conference on Intelligent Systems, Modelling and Simulation, ISMS 2011 | Year: 2011

In RFID-aided supply chains captured location-based event data is stored in distributed repositories. Performing anti-counterfeiting involves checks on the good's path in the supply chain. The path is reconstructed by querying corresponding event data from distributed repositories. The object name service performs lookups of relevant event repositories in EPC-global networks. Attacking the lookup process can be used to break privacy of inquirers, e.g. to derive product and user profiles. We share details about our security enhancement prototypes to protect the privacy of querying parties. Our developed enhancements are designed for easy integration into existing network infrastructures without major efforts. © 2011 IEEE.


Schapranow M.-P.,Enterprise Platform and Integration Concepts | Zeier A.,Enterprise Platform and Integration Concepts | Plattner H.,Enterprise Platform and Integration Concepts
Proceedings - 2011 IFIP 9th International Conference on Embedded and Ubiquitous Computing, EUC 2011 | Year: 2011

Location-based event data is captured in RFID-aided supply chains for tacking individual goods. They are stored in distributed event repositories by involved supply chain parties. Performing anticounterfeiting checks involves exchange of event data without exposure of sensitive business secrets. Current EPCglobal standards leave the definition of security strategies open for concrete implementation. We consider data security as the major aspect that needs to be clarified before wide adaption of EPCglobal standards will be considered by industries. The given work contributes by defining security extensions for EPCglobal networks and sharing implementation details of our research prototype. We show that incorporating in-memory technology enables history-based access control while keeping response times fast. © 2011 IEEE.

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