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Articles 1 - 9 of 9
Full-Text Articles in Physical Sciences and Mathematics
A Bland–Altman Comparison Of The Lead Care® System And Inductively Coupled Plasma Mass Spectrometry For Detecting Low-Level Lead In Child Whole Blood Samples, Christina Sobin, Tanner Schaub, Natali Parisi, Eva De La Riva
A Bland–Altman Comparison Of The Lead Care® System And Inductively Coupled Plasma Mass Spectrometry For Detecting Low-Level Lead In Child Whole Blood Samples, Christina Sobin, Tanner Schaub, Natali Parisi, Eva De La Riva
Christina Sobin, Ph.D.
Chronic childhood lead exposure, yielding blood lead levels consistently below 10 μg/dL, remains a major public health concern. Low neurotoxic effect thresholds have not yet been established. Progress requires accurate, efficient, and cost-effective methods for testing large numbers of children. The LeadCare® System (LCS) may provide one ready option. The comparability of this system to the “gold standard” method of inductively coupled plasma mass spectrometry (ICP-MS) for the purpose of detecting blood lead levels below 10 μg/dL has not yet been examined. Paired blood samples from 177 children ages 5.2–12.8 years were tested with LCS and ICP-MS. Triplicate repeat tests …
Usability Inspection Methods After 15 Years Of Research And Practice, Tasha Hollingsed, David G. Novick
Usability Inspection Methods After 15 Years Of Research And Practice, Tasha Hollingsed, David G. Novick
David G. Novick
Usability inspection methods, such as heuristic evaluation, the cognitive walkthrough, formal usability inspections, and the pluralistic usability walkthrough, were introduced fifteen years ago. Since then, these methods, analyses of their comparative effectiveness, and their use have evolved in different ways. In this paper, we track the fortunes of the methods and analyses, looking at which led to use and to further research, and which led to relative methodological dead ends. Heuristic evaluation and the cognitive walkthrough appear to be the most actively used and researched techniques. The pluralistic walkthrough remains a recognized technique, although not the subject of significant further …
Toward A More Accurate View Of When And How People Seek Help With Computer Applications, David G. Novick, Edith Elizalde, Nathaniel Bean
Toward A More Accurate View Of When And How People Seek Help With Computer Applications, David G. Novick, Edith Elizalde, Nathaniel Bean
David G. Novick
Based on 40 interviews and 11 on-site workplace observations of people using computer applications at work, we confirm that use of printed and on-line help is very low and find that providing greater detail of categories solution methods can present a more realistic picture of users’ behaviors. Observed study participants encountered a usability problem on average about once every 75 minutes and typically spent about a minute looking for a solution. Participants consumed much more time when they were unaware of a direct way of doing something and instead used less effective methods. Comparison of results from different data-collection methods …
A Computational Model Of Culture-Specific Conversational Behavior, Dusan Jan, David Herrera, Bilyana Martinovski, David G. Novick, David Traum
A Computational Model Of Culture-Specific Conversational Behavior, Dusan Jan, David Herrera, Bilyana Martinovski, David G. Novick, David Traum
David G. Novick
This paper presents a model for simulating cultural differences in the conversational behavior of virtual agents. The model provides parameters for differences in proxemics, gaze and overlap in turn taking.We present a review of literature on these factors and show results of a study where native speakers of Nrth American English, Mexican Spanish and Arabic were asked to rate the realism of the simulations generated based on different cultural parameters with respect to their culture.
A Novel Class Of Metal-Directed Supramolecular Dna-Delivery Systems, Juan C. Noveron
A Novel Class Of Metal-Directed Supramolecular Dna-Delivery Systems, Juan C. Noveron
Juan C N
No abstract provided.
Single-Crystal To Single-Crystal Phase Transitions Of Bis(N-Phenylisonicotinamide)Silver(I) Nitrate Reveal Cooperativity Properties In Porous Molecular Materials, Juan C. Noveron
Juan C N
No abstract provided.
Why Don't People Read The Manual?, David G. Novick, Karen Ward
Why Don't People Read The Manual?, David G. Novick, Karen Ward
David G. Novick
Few users of computer applications seek help from the documentation. This paper reports the results of an empirical study of why this is so and examines how, in real work, users solve their usability problems. Based on in-depth interviews with 25 subjects representing a varied cross-section of users, we find that users do avoid using both paper and online help systems. Few users have paper manuals for the most heavily used applications, but none complained about their lack. Online help is more likely to be consulted than paper manuals, but users are equally likely to report that they solve their …
Usability Over Time, Valerie Mendoza, David G. Novick
Usability Over Time, Valerie Mendoza, David G. Novick
David G. Novick
Testing of usability could perhaps be more accurately described as testing of learnability. We know more about the problems of novice users than we know of the problems of experienced users. To understand how these problems differ, and to understand how usability problems change as users change from novice to experienced, we conducted a longitudinal study of usability among middle-school teachers creating Web sites. The study looked at the use both the use of documentation and the underlying software, tracking the causes and extent of user frustration over eight weeks. We validated a categorization scheme for frustration episodes. We found …
Weighing Evidence In Sexual Abuse Evaluations: An Introduction To Bayes's Theorem, James M. Wood
Weighing Evidence In Sexual Abuse Evaluations: An Introduction To Bayes's Theorem, James M. Wood
James M. Wood
This article introduces readers to Bayes' theorem, a simple mathematical formula that can illuminate general issues and assist evaluators in the field of child sexual abuse. The theorem is applied to a case study of sexual abuse allegations that arose during a custody dispute.