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Auflistung nach Schlagwort "Empirical Study"

1 - 6 von 6
  • Konferenzbeitrag
    Augmented Reality Guidance for Car Repairs: immediate and long-term Effects
    (Mensch und Computer 2021 - Tagungsband, 2021) Hoffmann, Clemens; Prilla, Michael; Wundram, Kai; Emmermann, Björn
    Car service technicians are challenged by the increasing variety and complexity of repair and maintenance tasks. Recent studies have shown benefits by using augmented reality (AR) for different industrial tasks. Most studies compared a very established support technology with the new AR support in just one initial exposure. The lack of routine in dealing with AR often creates a respective disadvantage. This paper looks into the question to which extent can AR head-mounted display (AR HMD) guidance provide benefits for an unknown car repair task. To investigate further than an initial exposure, the service technicians repeated the specific task every twoweeks in total four times. The experiment under field conditions compares the efficiency, the repair quality, and the mental effort under AR HMD support to the traditional repair guideline. Results indicated that AR HMD support impacts positive the repair quality immediately and long term. Furthermore, the AR HMD support created a decent learning environment, that the high quality also remained without AR guidance. This shows opportunities to use AR HMDs for training and guidance of industrial tasks in practice.
  • Zeitschriftenartikel
    Einsatz der Informationsmodellierung bei der Einführung betrieblicher Standardsoftware
    (Wirtschaftsinformatik: Vol. 48, No. 2, 2006) Sarshar, Kamyar; Loos, Peter; Weber, Michael
    KernpunkteInformationsmodelle werden neben Softwareentwicklung und Geschäftsprozessmanagement vor allem auch für die Einführung von Standardsoftware eingesetzt. Der vorliegende Beitrag untersucht die gegenwärtige Praxis des Einsatzes von Informationsmodellen bei der Softwareeinführung. Die Untersuchung zeigt,dass Faktoren wie Unternehmensgröße, eingeführte Software sowie existierende Schnittstellen zu CRM-und ERP-Systemen wesentliche Auswirkung auf den Einsatz von Informationsmodellen bei der Softwareeinführung habendass die meisten Unternehmen Informationsmodelle für die Softwarekonfiguration nutzen, während die wenigsten diese bereits bei der Softwareauswahl heranziehen, unddass weder eine positive noch eine negative Abhängigkeit zwischen dem Einsatz von Informationsmodellen und der Einhaltung von Projektkosten und Terminzielen festgestellt werden kann. Jedoch berichten Unternehmen überwiegend, dass sie auch in der Zukunft bei der Softwareeinführung auf Informationsmodelle zurückgreifen wollen.AbstractInformation models are an established instrument to handle the complexity of information systems. In addition to software development and business process management the implementation of packaged software is one of the major application domains of information models. This contribution investigates through an explorative study, how information models are currently used in the context of packaged software implementation. Object of investigation is the implementation of billing software within utility companies. The study indicates that most companies of the sample applied information models within their implementation projects. Process and data models are more common than other models. However, only a minor part of the companies used dedicated modeling tools for the development and management of the models. The major application domain of information models was the configuration of the software, whereas model based software selection was from subordinate interest. The majority of companies who have applied information models will do this in future projects again
  • Konferenzbeitrag
    An Empirical Study of Flaky Tests in Python
    (Software Engineering 2022, 2022) Gruber, Martin; Lukasczyk, Stephan; Kroiß, Florian; Fraser, Gordon
    This is a summary of our work presented at the International Conference on Software Testing 2021 [Gr21b]. Tests that cause spurious failures without code changes, i.e., flaky tests, hamper regression testing and decrease trust in tests. While the prevalence and importance of flakiness is well established, prior research focused on Java projects, raising questions about generalizability. To provide a better understanding of flakiness, we empirically study the prevalence, causes, and degree of flakiness within 22 352 Python projects containing 876 186 tests. We found flakiness to be equally prevalent in Python as in Java. The reasons, however, are different: Order dependency is a dominant problem, causing 59% of the 7 571 flaky tests we found. Another 28% were caused by test infrastructure problems, a previously less considered cause of flakiness. The remaining 13% can mostly be attributed to the use of network and randomness APIs. Unveiling flaky tests also requires more runs than often assumed: A 95% confidence that a passing test is not flaky on average would require 170 reruns. Additionally, through our investigations, we created a large dataset of flaky tests that other researchers already started building on [MM21; Ni21].
  • Zeitschriftenartikel
    Erfolgsfaktoren der Applikationsintegration
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Klesse, Mario; Wortmann, Felix; Schelp, Joachim
    In this paper success factors for application integration are identified. Furthermore, the factors are confirmed using structural equation modeling. Success is measured using five goal indicators: quality of process support, business satisfaction, application integration costs, architectural flexibility and time-to-market. All factors discussed — architecture management, business-IT alignment, organization of integration, integration methodology, service oriented architecture, consolidation of applications, standardization and technical quality of integration infrastructures — show positive impact on application integration success. Since no dominant factor could be identified, a balanced implementation of all success factors is recommended.
  • ConferencePaper
    #ifdef Directives and Program Comprehension: The Dilemma between Correctness and Preference
    (Software Engineering 2021, 2021) Fenske, Wolfram; Krüger, Jacob; Kanyshkova, Maria; Schulze, Sandro
    In this extended abstract, we summarize our paper with the homonymous title published at the International Conference on Software Maintenance and Evolution (ICSME) 2020.
  • Konferenzbeitrag
    Why did you stop? - Investigating Origins and Effects of Interruptions during Mobile Language Learning
    (Mensch und Computer 2021 - Tagungsband, 2021) Draxler, Fiona; Schneegass, Christina; Safranek, Jonas; Hussmann, Heinrich
    The technological advances of smartphones facilitate the transformation of learning from the classroom to an activity that can happen anywhere and anytime. While micro-learning fosters ubiquitous learning, this flexibility comes at the cost of having an uncontrolled learning environment. To this point, we know little about the usage of mobile learning applications, particularly the occurrence of interruptions and the harm they cause. By diverting users’ attention away from the learning task, interruptions can potentially compromise learning performance. We present a four-week in-the-wild study (N = 12) where we investigate learning behavior and the occurrence of interruptions based on device logging and experience sampling questionnaires. We recorded 276 interruptions in 327 learning sessions and found that interruption type as well as users’ context influence learning sessions and the severity of the interruption (i.e., session termination likeliness). We discuss challenges and opportunities for the design of automated mechanisms to detect and mitigate interruptions in mobile learning.