Entity

Time filter

Source Type

Bloomington, IL, United States

Robinson S.,State Farm Mutual Automobile Insurance Company | Fisher D.S.,University of Illinois at Urbana - Champaign
ASHRAE Transactions | Year: 2012

Thermal expansion of piping results in significant anchor forces which can be found by several different methodologies. Comparison of these L-bend and U-bend equations was motivated by an inquiry questioning magnitudes of difference in results. Primary focus was given to explaining the large discrepancy in inquiry results. In addition flexibility analysis, bending moments, and U-bends were also researched. The ASHRAE, Kellogg, Grinnell-Spielvogel, and simple cantilever methods were compared by computing and graphing variations of multiple variables including leg lengths, diameter, and temperature. Findings suggest that ASHRAE's L-bend equation produces outlying results, and alterations to the 2012 ASHRAE handbook are recommended. © 2012 ASHRAE.


Lewis J.R.,IBM | Hardzinski M.L.,State Farm Mutual Automobile Insurance Company
International Journal of Speech Technology | Year: 2015

The Speech User Interface Service Quality (SUISQ) questionnaire is a standardized instrument for the assessment of the usability of interactive voice response (IVR) applications, developed by Polkosky (Toward a social-cognitive psychology of speech technology: affective responses to speech-based e-service, 2005; Mediated interpersonal communication, 2008). During its development, participants rated the quality of recorded interactions rather than interactions in which they participated, leaving open the question of the extent to which the findings would generalize to personal as opposed to observed interactions. The results of a large-scale unmoderated usability study of a natural-language speech recognition IVR demonstrated the utility of the SUISQ for the purpose of assessing personal experiences with service-providing speech user interfaces. The psychometric properties of construct validity and reliability were very similar to those reported by Polkosky. Additional item analyses led to the definition of two subsets of the full set of 25 SUISQ items—a reduced version (SUISQ-R, 14 items) and a maximally-reduced version (SUISQ-MR, 9 items). The SUISQ-R had similar psychometric properties to the full SUISQ, but analysis the SUISQ-MR revealed some weaknesses in its reliability and construct validity. This replication of the original SUISQ findings in a markedly different context of measurement and the availability of a shorter, psychometrically qualified, version of the questionnaire (SUISQ-R) should enhance its utility for usability practitioners who work on the development and assessment of speech-recognition IVRs. © 2015, Springer Science+Business Media New York.


Lewis J.R.,IBM | Mayes D.K.,State Farm Mutual Automobile Insurance Company
International Journal of Human-Computer Interaction | Year: 2014

This article describes the development and psychometric evaluation of the Emotional Metric Outcomes (EMO) questionnaire-a new questionnaire designed to assess the emotional outcomes of interaction, especially the interaction of customers with service-provider personnel or software. The EMO is a concise multifactor standardized questionnaire that provides an assessment of transaction-driven personal and relationship emotional outcomes, both positive and negative. The primary purpose of the EMO is to move beyond traditional assessment of satisfaction to achieve a more effective measurement of customers' emotional responses to products and processes. Psychometric evaluation showed that the EMO and its component scales had high reliability and concurrent validity with loyalty and overall experience metrics in a variety of measurement contexts. Concurrent measurement with the System Usability Scale (SUS) indicated that reported significant correlation of the SUS with likelihood-to-recommend ratings are probably primarily due to emotional rather than utilitarian aspects of the SUS. © Taylor & Francis Group, LLC.


Lewis J.R.,IBM | Brown J.,State Farm Mutual Automobile Insurance Company | Mayes D.K.,State Farm Mutual Automobile Insurance Company
International Journal of Human-Computer Interaction | Year: 2015

This article describes the psychometric properties of the Emotional Metric Outcomes (EMO) questionnaire and the System Usability Scale (SUS) using data collected as part of a large-sample unmoderated usability study (n = 471). The EMO is a concise multifactor standardized questionnaire that provides an assessment of transaction-driven personal and relationship emotional outcomes, both positive and negative. The SUS is a well-known standardized usability questionnaire designed to assess perceived usability. In previous research, psychometric evaluation using data from a series of online surveys showed that the EMO and its component scales had high reliability and concurrent validity with loyalty and overall experience metrics but did not find the expected four-factor structure. Previous structural analyses of the SUS have had mixed results. Analysis of the EMO data from the usability study revealed the expected four-factor structure. The factor structure of the SUS appeared to be driven by item tone. The estimated reliability of the SUS (.90) was consistent with previous estimates. The EMO and its subscales were also quite reliable, with the estimates of reliability for the various EMO scales ranging from.86 to.96. Regression analysis using SUS, EMO, and Effort as predictors revealed different key drivers for the outcome metrics of Satisfaction and Likelihood-to-Recommend. The key recommendations are to include the EMO as part of the battery of poststudy standardized questionnaires, along with the SUS (or similar questionnaire), but to be cautious in reporting SUS subscales such as Usable and Learnable. Copyright © Taylor & Francis Group, LLC.


Cope A.D.,Insurance Institute for Business and Home Safety | Crandell J.H.,ARES Consulting | Liu Z.,Insurance Institute for Business and Home Safety | Stevig L.J.,State Farm Mutual Automobile Insurance Company
Journal of Wind Engineering and Industrial Aerodynamics | Year: 2014

Recent full-scale studies of wind loads on components of multi-layer wall systems have shown that maximum instantaneous pressure differences across individual layers can be a large fraction of the net load across the wall system, as noted in Cope et al. (2012) The results of these studies are considerably different from results obtained using dynamic pressure chambers where the entire section of the wall is exposed to the same quasi-steady pressure difference or time varying pressures. The largest differences in results between the full-scale wind tests at the Insurance Institute for Business & Home Safety (IBHS) Research Center and the pressure chamber tests occurred for the exterior flexible multi-part siding layer. In the pressure chamber tests, the pressures tend to equalize rapidly between the exterior and interior surfaces of the flexible siding resulting in very low net loads on the siding. In the full-scale wind tests, the response of the flexible siding to the temporal and spatial variations in wind loads imposed by the flow around the building could be observed as a wave moving along the wall surface.The study reported in this paper investigates the loads on the fasteners used to attach the siding to the wall. Specifically, the relationship between the instantaneous pressure differences across the siding and the loads on the fasteners is presented; with the goal of determining whether any systematic reduction or amplification of loads on the fasteners resulted from the very short duration peak instantaneous pressure differences applied to the siding. Specialty instrumentation was developed that allowed measurement of outward acting loads applied to the siding fasteners. This paper describes that specialty instrumentation and presents comparisons of pressure differences multiplied by the tributary area assigned to a fastener against the withdrawal loads measured using the instrumented fasteners.While there is significant scatter in the results, probably due to friction in the fastener load system among other things, results show a strong overall one to one correlation between the net outward loads calculated by applying the pressure load to the tributary area and the measured loads on the fasteners. © 2014 Elsevier Ltd.

Discover hidden collaborations