1974 . The questionable unity of the concrete operations stage . International Journal of Psychology , 9 : 1 – 9 .HERON, A. & W. DOWEL. 1974. The questionable unity of the concrete operations stage. Intern. J. Psychol. 9: 1-10....
网络具体运思期;具体运算阶段;具体操作期
In principle, there is a training stage where images are binarized, used to extract possible regions of cracks, then classification models with a convolutional neural network. Finally, the proposed method is evaluated with other concrete images that contain and do not contain cracks. The same is ...
The measured torques and rotational speeds in the descent stage was fit, following Eq. (2). $$T = G + HN$$ (2) where T is the torque in N·m, G is the intercept in N·m, H is the slope in Nm·s, and N is the rotational speed in rpm. The Reiner-Riwlin equations were...
During concrete production, the energy consumed from the mining and processing of natural resources up until the actual manufacturing stage is commonly defined as the embodied energy, and has been estimated between 0.89 (Struble and Godfrey, 2004) and 1.40 MJ/kg (Alcorn and Baird, 1996). More...
Looking at just one stage of a material’s service life is not an accurate measure of how much carbon dioxide or energy is expended in relation to that material and it is misleading when we think about solving a complex challenge such as climate change. Although cement’s carbon footprint ...
Cross-validation (CV) provides a solution to evaluating generalization performance in the case of scarce sample size99. The most commonly used CV method is thek-fold CV (cf. Supplementary Note2for the definition), which includesksplits rather than a single split to achieve multiple iterations fo...
Cross-validation (CV) provides a solution to evaluating generalization performance in the case of scarce sample size99. The most commonly used CV method is thek-fold CV (cf. Supplementary Note2for the definition), which includesksplits rather than a single split to achieve multiple iterations fo...
For UHPC, the shrinkage only occurs during the heat curing stage, and the heat curing process normally lasts for 48 hours and further time extension is not necessary for performance improvement. During the past 5 years, research has shown that it is possible to successfully make UHPC without ...
Sustainable Operations and Computers, Volume 2, 2021, pp. 79-86 Erick Hungaro Arruda,…, Diego de Melo Conti View PDF The quest for a circular economy final definition: A scientific perspective Journal of Cleaner Production, Volume 314, 2021, Article 127973 Gustavo Cattelan Nobre, Elaine Tavares...