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- PublikationMaintenance and evolution of large scale software systems – Business, dev & ops challenges(10.02.2023) Rüegger, Janick; Kropp, MartinEven in the time of agile software development and devOps, maintenance and evolution of large-scale software systems remain challenging. This is not only caused by technical debt, but is heavily caused by lost knowledge, high complexity of micro-service architectures, difficult requirements management, not available documentation, and the complexity of communication among and coordination of the many stakeholders. In our session we will talk about the challenges we identified in our study and present new approaches to address these challenges.06 - Präsentation
- PublikationWaste self-reporting for software development productivity improvement(Springer, 2023) Sallin, Marc; Kropp, Martin; Anslow, Craig; Biddle, Robert; Stettina, Christoph J.; Garbajosa, Juan; Kruchten, Philippe [in: Agile processes in software engineering and extreme programming]Little research has been done on enabling software development teams to self-report waste to assist in productivity improvement. This study created a waste categorization and survey for teams to identify and quantify wasteful activities. Developers from a Swiss company used the survey for three weeks. Participants found the survey helpful for identifying waste but there was little evidence that self-reported waste correlated with improved performance.04B - Beitrag Konferenzschrift
- PublikationUnderstanding Leadership in Agile Software Development Teams: Who and How?(Springer, 09.06.2022) Weichbrodt, Johann; Kropp, Martin; Biddle, Robert; Gregory, Peggy; Anslow, Craig; Bühler, Ursina Maria; Mateescu, Magdalena; Meier, Andreas; Stray, Viktoria; Stol, Klaas-Jan; Paasivaara, Maria; Kruchten, Philippe [in: Agile Processes in Software Engineering and Extreme Programming. XP 2022]In this paper we report on a study of the nature of different aspects of leadership in agile teams. We used an established model of leadership, distinguishing transactional and transformational styles, and asked IT professionals a set of questions about the leadership they experience, both from direct supervisors (hierarchical leadership) and from the team itself (shared leadership). Our results show that agility is indeed related to the transformational style, but that the transactional style also plays a part, especially as shared leadership. Furthermore, even in highly agile software development, leadership by direct supervisors still plays an important role. We propose that, as software development becomes more agile, the transactional aspects of leadership may shift away from the leadership dyad between supervisor and employee into the agile team, while transformational leadership is important for both the team and supervisors.04B - Beitrag Konferenzschrift
- PublikationDeshalb gewinnt Edge Computing an Bedeutung(Netzmedien, 2022) Amberg, Thomas [in: Netzwoche]Internet-of-Things-Systeme speichern und analysieren Daten in der Cloud. Edge Computing bringt Rechenpower und Datenspeicher an den Rand des Netzwerks, zu den Sensoren und Aktuatoren im Feld.01B - Beitrag in Magazin oder Zeitung
- PublikationBenefits of card walls in agile software development. A systematic literature review(Springer, 2022) Sallin, Marc; Kropp, Martin; Stray, Viktoria; Stol, Klaas-Jan; Paasivaara, Maria; Kruchten, Philippe [in: Agile processes in software engineering and extreme programming]Card walls are often used to visualize various aspects of the software development process. They are an essential and widespread agile practice. Despite the drawback of physical card walls, its digital version is often not considered a sufficient alternative. This paper aims to find the reason for this and suggests how to evolve digital card walls into a viable alternative. We conducted a systematic literature review and analyzed twenty-two studies. We identified which desirable effects agile teams get from card wall usage and derived a set of properties a card wall needs to achieve those effects. Furthermore, we suggested a typology of card walls to compare the benefits and challenges among them.04B - Beitrag Konferenzschrift
- PublikationMeasuring Software Delivery Performance Using the Four Key Metrics of DevOps(Springer, 2021) Sallin, Marc; Kropp, Martin; Anslow, Craig; Quilty, James W.; Meier, Andreas; Gregory, Peggy; Lassenius, Casper; Wang, Xiaofeng; Kruchten, Philippe [in: Agile Processes in Software Engineering and Extreme Programming]The Four Key Metrics of DevOps have become very popular for measuring IT-performance and DevOps adoption. However, the measurement of the four metrics deployment frequency, lead time for change, time to restore service and change failure rate is often done manually and through surveys - with only few data points. In this work we evaluated how the Four Key Metrics can be measured automatically and developed a prototype for the automatic measurement of the Four Key Metrics. We then evaluated if the measurement is valuable for practitioners in a company. The analysis shows that the chosen measurement approach is both suitable and the results valuable for the team with respect to measuring and improving the software delivery performance.04B - Beitrag Konferenzschrift
- PublikationAgile Software Development: Practices, Self-Organization, and Satisfaction(Springer, 2021) Biddle, Robert; Kropp, Martin; Meier, Andreas; Anslow, Craig; Pfeiffer, Sabine; Nicklich, Manuel; Sauer, Stefan [in: The Agile Imperative]04A - Beitrag Sammelband
- PublikationThe Effects on social support and work engagement with scrum events(IEEE, 2021) Müller, Debora; Kropp, Martin; Anslow, Craig; Meier, Andreas [in: 2021 IEEE/ACM 13th International Workshop on Cooperative and Human Aspects of Software Engineering (CHASE)]One of the core values of the Agile Manifesto is “individuals and interactions over processes and tools.” Scrum implements interaction through key events (Sprint, Sprint Planning, Daily Scrum, Sprint Review, and Retrospective). There is limited work done on how these events influence perceived social support and work engagement. This paper examines perceived social support as a strengthening factor on work engagement in an agile work environment. Drawing upon the Job Demands-Resource Model, the research question is how do Scrum events relate to social support and what effect do they have on work engagement? We conducted an online survey with 132 Scrum professionals and analyzed the data using structural equation modelling. Results show that the Scrum event Retrospective strengthened social support. Moreover, social support is positively related to work engagement. The research contributes to the limited empirical understanding on perceived social support as well as work engagement in an agile work environment. It provides companies with an understanding of the importance of Retrospectives as a Scrum event.04B - Beitrag Konferenzschrift
- PublikationSatisfaction and its correlates in agile software development(Elsevier, 06/2020) Kropp, Martin; Meier, Andreas; Anslow, Craig; Biddle, Robert [in: Journal of Systems and Software]In this paper we address the topic of software development team members satisfaction with their development process. We present an in-depth analysis of the results of a nationwide survey about software development in Switzerland. We wanted to find out if satisfaction relates to the applied development method, and to the use of various practices, and impacts on business, team and software issues. We found that higher satisfaction is reported more by those using Agile development than with plan-driven processes. We explored the different perspectives of developers and those with a management role and found a high consistency of satisfaction between Agile developers and Agile management, and differences with those using working plan-driven methods. We found that certain practices and impacts have high correlations to satisfaction, and that collaborative processes are closely related to satisfaction. We then explored the relationship between satisfaction and various other perspectives. Our results in this analysis are principally descriptive, but we think they can be a relevant contribution to understand the challenges for everyone involved in Agile development.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationVisualizing progress tracking for software teams on large collaborative touch displays(IEEE, 2020) Scott-Hill, Brandon; Anslow, Craig; Ferreira, Jennifer; Kropp, Martin; Mateescu, Magdalena; Meier, Andreas [in: 2020 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC)]04B - Beitrag Konferenzschrift
- PublikationSatisfaction and its correlates in agile software development(Elsevier, 2020) Kropp, Martin; Meier, Andreas; Anslow, Craig; Biddle, Robert [in: Journal of Systems and Software]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationBeyond REST: GraphQL with Java(17.10.2019) Gruntz, DominikRESTful Web services are well established for accessing data from the backend, but REST interfaces have their disadvantages and constraints. That’s why Facebook developed GraphQL as an alternative. In this talk the goals and principles of GraphQL are presented. We will look at GraphQL's Schema Language and its Query Language and play around with the GraphQL API of github. Using an example application we will show how Java can be used to build a GraphQL server which supports queries, mutations and notifications.06 - Präsentation
- PublikationScoop - Mobile Payment(03/2018) Gruntz, Dominik; Knecht, Markus; Wullschleger, Stephan [in: IMVS Fokus Report]In diesem Artikel wird die elektronische Geldbörse Scoop vorgestellt, die im Rahmen eines KTI Projektes entwickelt worden ist. Im Gegensatz zu anderen Mobile Payment Lösungen muss bei Scoop der Point of Sale (POS) nicht mehr direkt an das Internet angeschlossen sein. Das Settlement der Zahlung wird direkt am POS vorgenommen und, falls das Mobiltelefon am POS zum Zeitpunkt der Zahlung nicht online ist, so werden die Transaktionsdaten über ein langsames Netzwerk an den Server ausgeliefert. Um «Double-Spend»-Attacken zu erkennen, werden alle Transaktionen in einer Kette (Chain) gespeichert und mit kryptographischen Hash-Codes gesichert. Im POS sind die Hash-Codes in einem mit JavaCard programmierten Secure-Element gespeichert. In diesem Artikel präsentieren wir die Idee von Scoop und erläutern Aspekte der Realisierung.01B - Beitrag in Magazin oder Zeitung
- PublikationIoT als Enabler für ein interaktives Schaufenster(03/2018) Luthiger, Jürg; Schoch, Robin; Stamm, Christoph [in: IMVS Fokus Report]Am Standort Brugg/Windisch betreibt die FHNW ein Maker Studio mit einem Schaufenster zur Präsentation von Wechselausstellungen. Um Passanten in die Wechselausstellungen einbeziehen zu können, sind lichtempfindliche Schalter am Schaufenster angebracht, mit denen die interaktiven Elemente einer Ausstellung gesteuert werden können. Diese Schalter und anderen interaktiven Elemente sind mit Technologien des Internet of Things (IoT) realisiert worden. Unter IoT wird die virtuelle Repräsentation realer, physischer Objekte verstanden, die untereinander mithilfe der Internet-Technologien kommunizieren können.01B - Beitrag in Magazin oder Zeitung
- PublikationBACnet/IT – Gebäudeautomation in Zeiten des Internets(03/2018) Weck, Wolfgang [in: IMVS Fokus Report]Über die letzten Jahrzehnte hat Datenkommunikation in verschiedenen Anwendungsbereichen Einzug gehalten und zu jeweils eigenen Lösungen geführt. So haben die Gebäudeautomations-Ingenieure für ihre Zwecke verschiedene Datennetzwerkstandards entwickelt, die sich in der Industrie und in bestehenden Gebäuden etabliert haben. Zugleich hat sich aus verschiedenen Anwendungen wie der Datenverarbeitung und der Büroinformation die bekannte Internet-Technologie entwickelt. Diese ist mittlerweile so verbreitet, dass eine Sogwirkung einsetzt: Dank hoher Stückzahlen, Marktmacht, Bekanntheit usw. wird es immer interessanter die Internet-Standards anstelle eigener, anwendungsspezifischer zu nutzen. Wie man zwei etablierte Standards – BACnet aus der Gebäudeautomation und die IT-Netze der Gebäude-Nutzer – zusammenbringen kann, ohne dass sich eine der beiden Welten komplett der anderen unterwirft, haben wir in einem KTI-geförderten Projekt zur Konvergenz der Gebäudeautomation und IT-Welt untersucht.01B - Beitrag in Magazin oder Zeitung
- PublikationDer Blockchain Hype(03/2018) Knecht, Markus [in: IMVS Fokus Report]Die Kryptowährung Bitcoin ist weltweit bekannt. Die darunterliegenden Konzepte und Technologien sind aber vielen Leuten unbekannt. Der Begriff Blockchain hingegen sagt meist nur technisch interessierten Personen etwas. Die Blockchain ist die Technologie, welche Kryptowährungen wie Bitcoin überhaupt erst ermöglicht. Kryptowährungen und vor allem Blockchains durchlaufen gerade eine Hype-Phase und immer mehr Projekte werden gestartet, die mit Blockchains zu tun haben. In diesem Artikel beschreiben wir, was es mit dem ganzen Hype auf sich hat, wie die tragende Technologie dahinter funktioniert und was sich damit alles bewerkstelligen lässt.01B - Beitrag in Magazin oder Zeitung
- PublikationStress in Agile Software Development: Practices and Outcomes(Springer, 2018) Meier, Andreas; Kropp, Martin; Anslow, Craig; Biddle, Robert; Garbajosa, Juan; Wang, Xiaofeng; Aguiar, Ademar [in: Agile Processes in Software Engineering and Extreme Programming]04B - Beitrag Konferenzschrift
- PublikationSatisfaction, Practices, and Influences in Agile Software Development(ACM, 2018) Kropp, Martin; Meier, Andreas; Anslow, Craig; Biddle, Robert [in: EASE 2018 - 22nd International Conference on Evaluation and Assessment in Software Engineering]The principles behind the Agile Manifesto begin with "Our highest priority is to satisfy the customer...". It also states that Agile projects should be build around motivated and self-organized teams, which might also lead to more satisfied developers. Several studies indeed report an increased job satisfaction by anecdotal evidence. In this paper we address the topic of satisfaction by in-depth analysis of the results of a nationwide survey about software development in Switzerland. We wanted to find out if satisfaction depends on the applied development method, and, more concrete, how satisfaction relates to other elements in the development process, including the use of various practices, and the influences on business, team and software issues.04 - Beitrag Sammelband oder Konferenzschrift
- PublikationStress in Agile Software Development: Practices and Outcomes(Springer, 2018) Kropp, Martin; Meier, Andreas; Anslow, Craig; Biddle, Robert; Garbajosa, Juan; Wang, Xiaofeng; Aguiar, Ademar [in: Agile Processes in Software Engineering and Extreme Programming: 19th International Conference, XP 2018]Stress is an important workplace issue, affecting both the health of individuals, and the health of organizations. Early advocacy for Agile Software Development suggested it might help avoid stress, with practices that emphasize a sustainable pace, and self-organizing teams. Our analysis of a 2014 survey, however, suggested that stress might still be commonplace in Agile teams, especially for those with less experience. We also noticed that newcomers to Agile emphasized technical, rather than collaborative, practices, and speculated this might explain the stress. We explored this in our analysis of a follow-up survey conducted in 2016, and report our findings in this paper. We show that there are a variety of factors involved, and that avoiding stress is associated with both collaborative and technical practices, and a range of outcomes.04B - Beitrag Konferenzschrift
- PublikationSources of satisfaction in agile software development(ACM, 2018) Kropp, Martin; Biddle, Robert; Meier, Andreas; Anslow, Craig [in: ACM/IEEE 40th International Conference on Software Engineering: Companion Proceedings (ICSE 2018)]In this paper we address the topic of satisfaction by analysis of the results of a national survey of software development in Switzerland. We found that satisfaction is reported more by those using Agile development than with plan-driven processes. We explored how satisfaction relates to oth-er elements in the development process, including the use of various practices, and the in!uences on business, team and software issues. We found that certain practices and in!uences have high correlations to satisfaction, and that collaborative processes are closely related to sat-isfaction, especially when combined with technical practices. Our intention in this analysis is principally descriptive, but we think the results are important to understand the challenges for everyone involved in Agile development, and can help in the transformation to Agile.04B - Beitrag Konferenzschrift