线索语义相容性的研究

With the studies of the Stimulus-Response Compatibility (SRC), more and more psychologists consider that the compatibility isn't only exist between stimulus and stimulus, response and response, but also any two sets in the information processing, it means that the compatibility is the basic feature of the human information processing. Research on the compatibility of the precue is a powerful evidence to support the issue. Dimension Overlap Model (Kornblum, 1990) is one of the most popular models to explain the mechanism of the SRC which focus on the dimension overlapping between the stimulus and response will activate the compatible response automatically, the compatibility effects origin from whether the compatible response prove or interference the response, the so the time course between the automatic activation and the task processing cause the dynamical time feature of the SRC (Kornblum, 1997). Yet the DO model has gotten many supports, it hasn't been tested in the paradigm of the precue task. At the same time, company with the development of the Environment Psychology, the effect of the ex-information in the environment on the inside information processing has drown much attention, does the validity probability of the cue have any influence on the cue compatibility? How about the relationship of the cue compatibility and the SRC? Research on the questions will reveal the characteristics of the human information processing, enhance the knowledge of the compatibility phenomena and resource, enlarge the field of SRC and produce more practice usage on the design of human-machine system. The mechanism and influence factors of symbolic compatibility between cue and stimulus were investigated within a precueing paradigm. The influence of the dimension overlapping relation between the cue and the stimulus, cue and the response on the reaction time were studied under the different kinds of SRC, to test whether or not it confirms the dimension overlap hypothesis, to test is there any effect of SOA and validity probability of cues on the cue compatibility. The results showed that the cue compatibility exists and owns such features: 1, It confirms the dimension overlap model that the cue which dimension overlapped with the stimulus or the response will influence the efficiency of the processing, the reaction time is shorter when the cue is congruent with the stimulus or the response that that of the incongruent cue; 2, Consistent to the automatic activation hypothesis, the time course is the important characteristic of the cue compatibility. The largest compatibility effect can be gotten from the middle duration of SOA. 3, The validity probability of cues influence the cue compatibility significantly, the strength of the cue compatibility effect grows stronger with the higher validity probability of cues. 4, The cue compatibility affect the effect of SRC, especially when the cue is compatible with the stimulus; 5, The cue compatibility has two-fold meaning, the cue-stimulus compatibility and the cue-response compatibility, the former is stronger than the later when they compete each other. In summary, the compatibility, the basic feature of human information processing, is proved by the research, and the dimension overlap model and automatic activation hypothesis is tested by the studying on the cue compatibility.

In situ high temperature X-ray diffraction studies of mixed ionic and electronic conducting perovskite-type membranes

Phase structure and stability of three typical mixed ionic and electronic conducting perovskite-type membranes, SrCo0.8Fe0.2O3-delta (SCF), Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) and BaCo0.4Fe0.4Zr0.2O3-delta (BCFZ) were studied by in situ high temperature X-ray diffraction at temperatures from 303 to 1273 K and under different atmospheres (air, 2% O-2 in Ar and pure Ar) at 1173 K. By analyzing their lattice parameters the thermal expansion coefficients (TECs) of BSCF, SCF and BCZF are obtained to be 11.5 x 10(-6) K-1, 17.9 x 10(-6) K-1 and 10.3 x 10(-6) K-1, respectively. A relationship between phase stability and TEC was proposed: the higher is the TEC, the lower is the operation stability of the perovskite materials. (C) 2005 Elsevier B.V. All rights reserved.