Auflistung nach Schlagwort "Field Study"
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- ZeitschriftenartikelEvaluation of an Augmented Reality Instruction for a Complex Assembly Task - Comparison of a Smartphone-Based Augmented Reality Instruction with a Conventional Paper Instruction for the Teach-in Phase in Manual Assembly(i-com: Vol. 20, No. 1, 2021) Funk, Johannes; Schmidt, LudgerThis study compares the use of a marker-based AR instruction with a paper instruction commonly used in manual assembly. Hypotheses were tested as to whether the instruction type affects assembly time, number of errors, usability, and employee strain. Instead of student participants and artificial assembly tasks (e. g. Lego assemblies), the study was conducted with 16 trainees in a real workplace for the assembly of emergency door release handles in rail vehicles. Five assembly runs were performed. Assembly times and assembly errors were determined from recorded videos. Usability (SUS) and strain (NASA-TLX) were recorded with questionnaires. After a slower assembly at the beginning, the AR group assembled significantly faster in the fifth run. The comparable number of errors, usability and strain make marker-based AR applications interesting for knowledge transfer in manual assembly, especially due to the easy entrance and low costs.
- ZeitschriftenartikelMessung von digitalem Stress im organisationalen Umfeld: Erfahrungen aus einer Fallstudie(HMD Praxis der Wirtschaftsinformatik: Vol. 57, No. 2, 2020) Fischer, Thomas; Riedl, RenéDigitaler Stress ist eine Form von Stress, die aus der Interaktion mit Informations- und Kommunikationstechnologien sowie deren Allgegenwärtigkeit in Wirtschaft und Gesellschaft resultiert. Digitaler Stress ist weit verbreitet und hat weitreichende negative Konsequenzen, wie etwa verringerte Zufriedenheit am Arbeitsplatz oder Burnout. Bislang ist die Erforschung von digitalem Stress vor allem auf Untersuchungen in Laborumgebungen sowie Online-Umfragen beschränkt. In diesem Artikel fokussieren wir auf einen anderen Forschungsansatz, nämlich Feldforschung. Es werden Methoden verglichen, die zur Erforschung von digitalem Stress am Arbeitsplatz eingesetzt werden können. Konkret wurden in einer Fallstudie über drei Arbeitswochen folgende Messinstrumente eingesetzt: Online-Fragebogen, Online-Tagebuch, Brustgurt zur Aufzeichnung der Herzschlagfrequenz sowie Gerät zur Messung von Blutdruck am Handgelenk. Insgesamt 16 Teilnehmer aus der Fallstudienorganisation nutzten diese Messinstrumente weitgehend selbständig, so dass Interventionen der beteiligten Forscher auf ein Mindestmaß reduziert werden konnten. Auf Basis der gewonnen Erkenntnisse werden die eingesetzten Methoden auf der Basis von sechs Gütekriterien (Reliabilität, Validität, Sensitivität, Diagnostizität, Objektivität, Aufdringlichkeit) verglichen. Es zeigt sich, dass jedes Messinstrument Stärken und Schwächen hat. Daraus folgt, dass zur praxisorientierten Erforschung von digitalem Stress ein Methoden-Mix angewendet werden sollte. Digital stress is a form of stress, which is caused by interaction with information and communication technologies and by their omnipresence in economy and society. This phenomenon is highly prevalent and it has substantial negative consequences such as reduced job satisfaction or burnout. So far, research on digital stress has been mostly confined to laboratory environments and online surveys. In this article, we focus on another research approach, namely field research. We compare methods that can be used to investigate digital stress in the workspace. Specifically, we conducted a case study over three workweeks using the following measurement methods: online surveys, online diary, a chest belt to measure heart rate and a device to measure blood pressure on the wrist. A total of 16 participants in the case organization used these measurement methods widely autonomously resulting in a minimal need for intervention by the researchers. Based on the experiences gathered through this case, the applied methods are compared using six criteria (i.e., reliability, validity, sensitivity, diagnosticity, objectivity, and intrusiveness). We find that each method has its strengths and weaknesses. Therefore, a mix of methods should be applied to practical research on digital stress.
- KonferenzbeitragPhoto-enriched Documentation during Surgeries with Google Glass: An Exploratory Usability Study in a Department of Paediatric Surgery(i-com: Vol. 15, No. 2, 2016) Mentler, Tilo; Kappel, Janosch; Wünsch, Lutz; Herczeg, MichaelDue to hygienic regulations and mobility requirements, medical professionals show great interest in wearable devices allowing for hands-free interaction and ubiquitous information access. Smartglasses like the prototype “Google Glass” have already been evaluated in pre-hospital as well as clinical medical care. Based on laboratory studies according to the reliability of voice and gesture recognition and field studies during four surgeries in the department of paediatric surgeries, we discuss usability and acceptance of smartglasses for photo-enriched documentation during surgeries. While technical limitations (e. g. poor camera quality) have to be overcome, usable solutions for human-smartglasses interaction by voice and gesture recognition seem to be possible midterm. Surgeons and other members of surgical teams are curious about smartglasses in their working environment. This can be a starting point for a wider use, if user interface and interaction design for smartglasses are further explored and developed in a user-centered process meeting their requirements. In this regard, transmodal consistency is recommended as a design principle for applications supporting multiple input and output modalities.