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Sökning: WAKA:kon > Högskolan i Borås

  • Resultat 1-10 av 2531
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  • Abraha, Desalegn, et al. (författare)
  • The effect of cosmopolitanism, national identity and ethnocentrism on Swedish purchase behavior
  • 2015
  • Ingår i: Proceedings of the AABRI conference, Orlando Florida, January 1-3. - Academic and Business Research Institute.
  • Konferensbidrag (refereegranskat)abstract
    • The Scandinavian market has changed significantly over the past half-decade with several online distributors, particularly of digital files such as music, originating locally. This in effect has significantly further increased globalization of commerce in the Nordic countries.  The purpose of this research is to examine the effect of more traditional models of consumer choice regarding local vs global products in this context.  While the major metro areas of Scandinavia have always been largely global, this research reaches further into the central part where attitudes and globalization tends to be adopted at a slower pace. 
  • Abtahi, Farhad, 1981-, et al. (författare)
  • A knitted garment using intarsia technique for Heart Rate Variability biofeedback Evaluation of initial prototype
  • 2015
  • Ingår i: Engineering in Medicine and Biology Society (EMBC), 2015 37th Annual International Conference of the IEEE. - IEEE. - 978-1-4244-9270-1 ; s. 3121-3124
  • Konferensbidrag (refereegranskat)abstract
    • Heart rate variability (HRV) biofeedback is a method based on paced breathing at specific rate called resonance frequency by giving online feedbacks from user respiration and its effect on HRV. Since the HRV is also influence by different factors like stress and emotions, stress related to an unfamiliar measurement device, cables and skin electrodes may cover the underling effect of such kind of intervention. Wearable systems are usually considered as intuitive solutions which are more familiar to the end-user and can help to improve usability and hence reducing the stress. In this work, a prototype of a knitted garment using intarsia technique is developed and evaluated. Results show the satisfactory level of quality for Electrocardiogram and thoracic electrical bioimpedance i.e. for respiration monitoring as a part of HRV biofeedback system. Using intarsia technique and conductive yarn for making the connection instead of cables will reduce the complexity of fabrication in textile production and hence reduce the final costs in a final commercial product. Further development of garment and Android application is ongoing and usability and efficiency of final prototype will be evaluated in detail.
  • Abtahi, Farhad, 1981-, et al. (författare)
  • An Affordable ECG and Respiration Monitoring System Based on Raspberry PI and ADAS1000 : First Step towards Homecare Applications
  • 2015
  • Ingår i: 16th Nordic-Baltic Conference on Biomedical Engineering : 16. NBC & 10. MTD 2014 joint conferences. October 14-16, 2014, Gothenburg, Sweden. - Springer. - 978-3-319-12966-2 ; s. 5-8
  • Konferensbidrag (refereegranskat)abstract
    • Homecare is a potential solution for problems associated with an aging population. This may involve several physiological measurements, and hence a flexible but affordable measurement device is needed. In this work, we have designed an ADAS1000-based four-lead electrocardiogram (ECG) and respiration monitoring system. It has been implemented using Raspberry PI as a platform for homecare applications. ADuM chips based on iCoupler technology have been used to achieve electrical isolation as required by IEC 60601 and IEC 60950 for patient safety. The result proved the potential of Raspberry PI for the design of a compact, affordable, and medically safe measurement device. Further work involves developing a more flexible software for collecting measurements from different devices (measuring, e.g., blood pressure, weight, impedance spectroscopy, blood glucose) through Bluetooth or user input and integrating them into a cloud-based homecare system.
  • Abtahi, Farhad, 1981-, et al. (författare)
  • Development and preliminary evaluation of an Android based heart rate variability biofeedback system
  • 2014
  • Konferensbidrag (refereegranskat)abstract
    • The reduced Heart Rate Variability (HRV) is believed to be associated with several diseases such as congestive heart failure, diabetes and chronic kidney diseases (CKD). In these cases, HRV biofeedback may be a potential intervention method to increase HRV which in turn is beneficial to these patients. In this work, a real-time Android biofeedback application based on a Bluetooth enabled ECG and thoracic electrical bioimpedance (respiration) measurement device has been developed. The system performance and usability have been evaluated in a brief study with eight healthy volunteers. The result demonstrates real-time performance of system and positive effects of biofeedback training session by increased HRV and reduced heart rate. Further development of the application and training protocol is ongoing to investigate duration of training session to find an optimum length and interval of biofeedback sessions to use in potential interventions.
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