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排序方式: 共有113条查询结果,搜索用时 16 毫秒
91.
David Avison Niels Bjørn-Andersen Elayne Coakes Gordon B Davis Michael J Earl Amany Elbanna Guy Fitzgerald Robert D Galliers Rudy Hirschheim Juhani Iivari Heinz K Klein Frank Land Marco de Marco rew M Pettigrew Jaana Porra Bernd Carsten Stahl Carsten Sørensen Bob Wood & Trevor Wood-Harper 《Information Systems Journal》2006,16(4):343-382
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Simola Jaana; Kuisma Jarmo; ??rni Anssi; Uusitalo Liisa; Hy?n? Jukka 《Canadian Metallurgical Quarterly》2011,17(2):174
Human vision is sensitive to salient features such as motion. Therefore, animation and onset of advertisements on Websites may attract visual attention and disrupt reading. We conducted three eye tracking experiments with authentic Web pages to assess whether (a) ads are efficiently ignored, (b) ads attract overt visual attention and disrupt reading, or (c) ads are covertly attended with distraction showing up indirectly in the reading performance. The Web pages contained an ad above a central text and another ad to the right of the text. In Experiments 1, 2, and 3A the task was to read for comprehension. Experiment 1 examined whether the degree of animation affects attention toward the ads. The results showed that ads were overtly attended during reading and that the dwell times on ads were the longest when the ad above was static and the other ad was animated. In Experiments 2 and 3, the ads appeared abruptly after a random time interval. The results showed that attention (i.e., the time when the eyes first entered an ad) was related to the ad onset time. This happened especially for the ad to the right, indicating that ads appearing close to the text region capture overt attention. In Experiment 3B the participants browsed the Web pages according to their own interest. The study demonstrated that salient ads attract overt visual attention and disrupt reading, but during free browsing, ads were viewed more frequently and for longer time than during reading. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
94.
Antti Salovaara Asko Lehmuskallio Leif Hedman Paula Valkonen Jaana Näsänen 《International journal of human-computer studies》2010,68(11):803-821
More and more people entering the stage of retirement at around age 55–65 are healthy, active, and also very computer-literate. This trend is rapidly changing the common image of late-midlife technology users, which rests on the assumption that they find it difficult to embrace new technologies and also that their main interests are health related. Although technology use and lifestyles are changing, however, many other aspects of life remain the same. One of these aspects is that of the transitions, or life changes, that generally take place in these years. Besides retirement, these transitions include changes in health, housing, social interaction, work life, and personal finance. People develop different ways of coping with these transitions, which brings up interesting issues related to the late midlife stage. This paper presents a diary-aided interview study of late middle-age adults (N=24) in Finland and Sweden with a focus on the interplay between technologies and transitions. Transitions were found to play a part in how the life interests of late middle-aged persons are often conflictive, forcing them to choose from among various ‘possible selves’. At its best, technology can help alleviate these tensions. This finding is exemplified in the paper’s discussion of two design implications associated with particular clashes of interests, related to how daily activities are organized and how contact is maintained with one’s friends and family. 相似文献
95.
Jaana Liimatainen Maarit Karonen Jari Sinkkonen Marjo Helander Juha-Pekka Salminen 《Journal of chemical ecology》2012,38(11):1410-1418
The contents of individual phenolic compounds in the inner bark of silver birch (Betula pendula Roth) were analyzed by HPLC-DAD. Samples from 21 mature trees originating from three micropropagated parent trees were collected six times over a 1-year period. Significant seasonal variation in the quantities of ten compounds and four chromatographically unresolved compound pairs was found. A majority of the compounds also exhibited significant quantitative variation among birch clones. There were no qualitative differences associated with the season or among the clones. However, wounding of the bark induced the production of new types of bark phenolics: several ellagitannins were detected in the callus tissues of birch for the first time. 相似文献
96.
The current study was designed to examine the ways in which perceived behavioral norms among grade mates and school social climate vary across the transition to middle school. The main goals of the study were to test whether Latino students may be more sensitive to the school social climate than White students and whether perceived behavioral norms might help explain this association. Cross-sectional analyses comparing Latino and White students (N = 383) revealed that perceptions of school social climate and behavioral norms became more negative across the middle school transition. Multiple regression analysis showed that school climate perceptions predicted self-reported academic compliance and rule breaking only for Latino students. Mediational analysis revealed that the association between perceived climate and self-reported rule breaking was partially accounted for by perceptions of behavioral norms for rule breaking only among Latino students. Taken together, the results suggest that compared with White students, Latino students are more sensitive to school social climate as it relates to their school conduct. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
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This paper reports on the application of an eddy current sensor with an active compensation for changes in sensor temperature to simultaneous monitoring oil film thickness and temperature in a tilting pad thrust bearing. Sensor design, calibration procedure, sensitivity and accuracy are described. Test equipment along with sensor mounting is also presented. Tests were run at different rotational speeds and bearing loads as well as different supplied oil flow rates to evaluate sensor performance in various operating conditions. During the tests film thickness and temperature were simultaneously measured. Temperatures were compared with data from thermocouples installed in the pads and thermistors mounted in the collar. Tests have shown that the sensor can successfully be used to reliably monitor the conditions within the bearing. 相似文献
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Results are reported of empirical investigations into EDP applications in use. A model for connecting terms of the users of the applications to the consumed hardware resources is proposed. The properties of so-called “application profiling” are studied. Discussions are based on through analyses of a few EDP applications and one of them is abridged as a case study. 相似文献