Suchergebnisse

Falun Gong, founded by Li Hongzhi in 1992, attracted international attention in 1999 after staging a demonstration outside government offices in Beijing. It was subsequently banned. Followers then created a number of media outlets outside China focused on protesting the PRC's attack on the 'human rights' of practitioners. This volume focuses on Falun Gong and violence. Though the author notes accusations of how Chinese authorities have abused and tortured practitioners, the volume will focus on Li Hongzhi's teachings about 'spiritual warfare', and how these teachings have motivated practitioners to deliberately seek brutalization and martyrdom

Objective To assess versions of the shorter form variant of Usability Metric for User Experience (UMUX-LITE) questionnaire differing in the number of response options for the items (3, 5, 7, and 11). Background The UMUX-LITE is an efficient (two-item) standardized questionnaire that measures perceived usability. A growing body of evidence shows it closely corresponds to one of the most widely used standardized usability questionnaires, the System Usability Scale (SUS), with regard to both correlation and magnitude of concurrently collected means. Although the "standard" version of the UMUX-LITE uses items with seven response options, there is some variance in practice. Method Members of a corporate user experience panel ( n = 242) completed surveys rating a recent Web site experience with the SUS and UMUX-LITE, also providing ratings of overall experience and likelihood-to-recommend. Results Scale reliabilities were acceptable (coefficient α >.70) with the exception of UMUX-LITE with three response options. All UMUX-LITE correlations with SUS, overall experience, and likelihood-to-recommend were highly significant. For likelihood-to-recommend, there was a significant difference in the magnitude of correlations, with 11 response options higher than three. Although some statistically significant differences were observed in correspondence between SUS and UMUX-LITE scores, these did not seem to translate to practically significant differences. Conclusion The number of UMUX-LITE response options does not matter much, especially in practice. Because the version with three response options showed some weakness with regard to reliability and correlation with likelihood-to-recommend, practitioners should avoid it. Application Unless there is a strong reason to do otherwise, use the "standard" version with seven response options.

Recently, Virzi (1992) presented data that support three claims regarding sample sizes for usability studies: (1) observing four or five participants will allow a usability practitioner to discover 80% of a product's usability problems, (2) observing additional participants will reveal fewer and fewer new usability problems, and (3) more severe usability problems are easier to detect with the first few participants. Results from an independent usability study clearly support the second claim, partially support the first, but fail to support the third. Problem discovery shows diminishing returns as a function of sample size. Observing four to five participants will uncover about 80% of a product's usability problems as long as the average likelihood of problem detection ranges between 0.32 and 0.42, as in Virzi. If the average likelihood of problem detection is lower, then a practitioner will need to observe more than five participants to discover 80% of the problems. Using behavioral categories for problem severity (or impact), these data showed no correlation between problem severity (impact) and rate of discovery. The data provided evidence that the binomial probability formula may provide a good model for predicting problem discovery curves, given an estimate of the average likelihood of problem detection. Finally, data from economic simulations that estimated return on investment (ROI) under a variety of settings showed that only the average likelihood of problem detection strongly influenced the range of sample sizes for maximum ROI.

Four magnetic stripe readers were evaluated for percentage of good reads, throughput, and user preference using a simulated time-and-attendance task. Two were slot readers, one with a vertical slot and one with a horizontal slot. Two were insertion readers, one with the insertion parallel to the horizontal plane and one with the insertion 20 deg below the horizontal plane. Twelve participants were divided into four groups of three members each. Each group approached each reader from both directions. The percentage of good reads was high on all readers and was not significantly different. The differences in throughput and preference were significant and favored the slot readers. It did not seem to matter whether the slot was vertical or horizontal. The angle of entry for the insertion readers produced no significant differences.

"Enlightened Martyrdom: The Hidden Side of Falun Gong provides a comprehensive overview of Falun Gong: the movement's background, history, beliefs and practices. But whereas prior treatments have generally tended to downplay Falun Gong's 'dark side,' in Enlightened Martyrdom, we have made an effort to include treatments of the less palatable aspects of this movement"--

Cover -- Title Page -- Copyright Page -- Dedication -- Contents -- Biographies -- Foreword -- Preface to the Second Edition -- Acknowledgments -- Chapter 1 - Introduction and how to use this book -- Introduction -- The organization of this book -- How to use this book -- What test should I use? -- What sample size do I need? -- You don't have to do the computations by hand -- Key points -- Chapter review questions -- Answers to chapter review questions -- References -- Chapter 2 - Quantifying user research -- What is user research? -- Data from user research -- Usability testing