Re-examination of residual arousal as an explanation of aftereffects: Frustration tolerance versus response speed.

Three experiments, with 98 undergraduates, investigated the effects of increasing task difficulty and noise intensity on postnoise persistence on the Feather tolerance for frustration puzzles. In Exp I, greater persistence occurred both after exposure to moderate noise levels (55 db [A]) and an easy perceptual-motor task and after high noise levels (90 db [A]) and a more difficult task. The same pattern of persistence was obtained in Exp II, with more attempts to solve the Feather puzzles occurring after moderate noise and an easy cognitive task and after loud noise and a more difficult cognitive task. In Exp III, a modified Feather task was presented with instructions to determine solvability. A similar U-shaped relationship was obtained, with longer correct response times to unsolvable puzzles following low noise and high noise. Such aftereffect patterns are more easily explained as the result of residual arousal than of frustration tolerance. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Extending the technology acceptance model to explore the intention to use Second Life for enhancing healthcare education

Learners need to have good reasons to engage and accept e-learning. They need to understand that unless they do, the outcomes will be less favourable. The technology acceptance model (TAM) is the most widely recognized model addressing why users accept or reject technology. This study describes the development and evaluation of a virtual environment, the online 3D world Second Life (SL), for learning rapid sequence intubation (RSI). RSI is an increasingly frequently used method of acute airway management in healthcare settings. The intention of learners to use the system was explored based on the TAM, with the computer self-efficacy construct as an external variable. Two hundred and six nursing students participated in this study. The findings suggest that the system was perceived as useful, and that the students felt confident working with computers and intended to review RSI in SL as often as needed. However, they remained neutral regarding the ease of use of the system. Strategies were suggested for boosting the students’ self-confidence in using the system. Overall use of the TAM in this context was successful, indicating the robustness of the model. The limitations of the study were discussed and further areas of research on the TAM were proposed.     

来自“云端”的放心肉

成都云计算中心与微软专家组密切合作，通过对食品生产、加工和销售整个生态系统的监管，给广大老百姓提供一个安心、放心的食品消费市场。     

Time-dependent queueing model having heterogeneous servers

The present paper considers a time-dependent queueing model having a finite number of parallel channels each having a different service rate. The probabilities of the exact number of arrivals and departures by a given time and marginal probabilities of the exact number of arrivals are obtained.     

Nanolayer coatings for hard disk and demanding tribological applications

Coating properties and performance can be tailor-designed by proper control of nano structure andprocess conditions. This paper presents two examples: first, the synthesis and optimization of 1 nm thick nitrogenated carbon (CN_x) nano-layers as protective overcoats in extremely highdensity harddisksystems, and, second, the development of multilayer coatings for wear protection at elevated temperatures. Synthesis of these coatings was done by magnetron sputtering. These studies demonstrate that one canproduce atomically smooth 1 nmthickCN_xovercoatswith acceptable corrosionperformance. In addition, this paper shows that, with the proper choice of nanolayer thickness and process conditions, superhard coatings based on TiN/SiN_x and TiB₂/TiC multilayers with high thermal stability, low internal stress, and high wear resistance can be synthesized.     

Toward the Training of Broad-Range Family Therapists.

Psychologists as a profession have been relatively underrepresented in the field of family therapy. This is true when we consider the people who have shaped the field of family therapy and when we look at the program of the American Psychological Association (APA). It is even true when we look at the trainees and students at the Ackerman Institute, whose training program is the basis for these remarks. Among the mental health disciplines, psychology is the most rigorous in stressing critical and evaluative thinking, conceptualizing, and intellectual learning. Basic training in experimental methodology cultivates a preference for reductionist thinking. Family therapy, on the other hand, deals with themes, patterns, complexities, and data overload and necessitates learning that is affective and experiential as well as intellectual. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The potential for expert systems in the interpretation of building contracts

At present, in the UK construction industry, disputes arise from the interpretation of the provisions of standard forms of building contract applied in specific cases. Computer based Expert Systems have been developed in the legal domain. The paper by P. W. Pollock of Robert Gordon's Institute of Technology and Kitty Rees of Leeds Polytechnic considers the potential for applying Expert Systems to the interpretation of building contracts.     

Investigations towards the Rapid Low-temperature Dyeing of Wool

The mechanism of, and requirements for, the dyeing of wool at low temperature are discussed, and two-bath processes that satisfy these requirements are evaluated. A new one-bath process for the rapid dyeing of wool at 50 or 60°C is described and evaluated, and ways of re-using dye-liquors are discussed.