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A current development trend in research on intelligent systems is to optimize a general intelligent prediction system into an individuation intelligent prediction system that is applied in specialized fields. Protein structure prediction is a challenging international issue. In this paper, we propose a new intelligent prediction system model, designed as a multi-layer compound pyramid model, for predicting secondary protein structure. The model comprises four independent intelligent interfaces and several knowledge discovery methods. The model penetrates throughout the domain knowledge, with the effective attributes chosen by Causal Cellular Automata. Furthermore, a high pure structure database is constructed for training. On the RS126 dataset, the overall state per-residue accuracy, Q3, reached 83.99%, while on the CB513 dataset, Q3 reached 85.58%. Meanwhile, on the CASP8 sequences, the results are superior to those produced by other methods, such as Psipred, Jpred, APSSP2 and BehairPred. These results confirm that our method has a strong generalization ability, and that it provides a model for the construction of other intelligent systems. 相似文献
123.
针对初学者在学习Access数据库中遇到的困难,设计了三个教学案例,介绍报表中计算控件的使用、if语句的语法格式和通配符“?”和“’,的使用.对于提高Access数据库的教学效果有一定的参考价值。 相似文献
124.
Lyndsay A. Cartwright Sue Hayes Douglas C. Tozer Dan Clayton Mary-Ann Burns Dena Lewis Noah Gaetz Namrata Shrestha 《Journal of Great Lakes research》2021,47(2):273-282
Beneficial use impairments (BUIs) under the Great Lakes Water Quality Agreement identify environmental issues requiring remedial action within the Great Lakes Areas of Concern (AOCs). We conducted this study to support the assessment of the wildlife component of BUI 3: degradation of fish and wildlife populations. We compared bird and amphibian (frogs and toads) data from the Toronto and Region Conservation Authority’s Terrestrial Long-term Monitoring Program in the Toronto and Region AOC to an adjacent, but otherwise similar, reference watershed, Duffins Creek. Twelve of 13 targets were met within the AOC for forest bird, wetland bird, meadow bird and amphibian populations based on averages of mean annual values at sites within the AOC that were within two standard deviations of averages at sites in the Duffins Creek reference watershed between 2008 and 2017. Even though wildlife populations within the AOC were within the normal range of variability expected from a reference watershed, they were often at lower levels than within the Duffins Creek reference watershed. In addition, forest bird and amphibian populations were negatively affected by urbanization within the AOC and meadow bird indices declined. We conclude that while wildlife populations within the AOC currently meet targets for BUI 3, they continue to be negatively impacted by numerous stressors that are primarily related to past and ongoing urbanization. Thus, continued restoration of wildlife habitat and protection of existing habitat within the AOC is highly recommended. 相似文献
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Zhang Dan Li Pan Zhao Lei Xu Duanqing Lu Dongming 《Neural computing & applications》2021,33(19):12957-12971
Neural Computing and Applications - Deep convolutional neural networks have achieved great success for image denoising recently. However, increasing the depth of the neural network cannot... 相似文献
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An investigation of the effect of online consumer trust on expectation, satisfaction, and post-expectation 总被引:1,自引:1,他引:0
Dan J. Kim 《Information Systems and E-Business Management》2012,10(2):219-240
This study proposes a framework regarding the relationship between consumer trust, satisfaction, expectation, and post-expectation
in the context of electronic commerce. In particular, the framework draws together from three theories: social exchange theory,
expectation-confirmation theory, and post-acceptance model of IS continuance. Following the longitudinal pre-purchase and
post-purchase stages, this study provides a theoretical framework combining trust, expectation, satisfaction, and post-expectation
(i.e., perceived usefulness) and tests the proposed model empirically using Internet consumer behavior data collected via
two rounds of Web surveys. The empirical findings suggest that both consumer’s trust and expectation have positive influences
on consumer’s satisfaction; a significant and positive relationship is detected between consumer’s trust and expectation;
customer’s satisfaction and perceived usefulness as post-expectation belief are important predictors of repurchase intention.
In consequence, the study provides a framework explaining the subsequent relationships of trust, expectation, confirmation,
satisfaction, post-expectation, and repurchase intention (i.e., consumer trust → expectation → confirmation → satisfaction
→ post-expectation → repurchase intention) across pre-purchase and post-purchase stages. Theoretical and practical implications
are discussed. 相似文献
130.