W. QUINE, NATURALIZATION, SKEPTICISM AND CONCEPTUAL CHANGE PROBLEM

The paper aims to show the relationship between the W. Alston’s idea about the formal independence of the contexts of “being justified” and of “knowing that one is justified” and the means to overcome the problems of skepticism within the naturalized epistemology by W. Quine. Based on some works – “From a Logical Point of View” (1963), “The Ways of Paradox” (1966), “Ontological Relativity” (1969) etc. – an attempt is made to reconstruct close to the text the possible answers that W. Quine may give to the skeptical challenge of the problem of justification of standards of justification and of the “conceptual change” problem. It is shown that W. Quine's response to the skeptical “challenge to natural science that arises from within natural science” can be understood as a reference of the independence of different “epistemic levels”, one of which is set by the “background” theory that provides the understanding of terms such “reality”, “evidence” and “justification”, and the other is related to the search for a more effective representation of the theory and determines the possibility of its change.

Evaluation Technology of Classroom Students’ Learning State Based on Deep Learning

Facial features are an effective representation of students’ fatigue state, and the eye is more closely related to fatigue state. However, there are three main problems in the existing research: (1) the positioning of the eye is vulnerable to the external environment; (2) the ocular features need to be artificially defined and extracted for state judgment; and (3) although the student fatigue state detection based on convolutional neural network has a high accuracy, it is difficult to apply in the terminal side in real time. In view of the above problems, a method of student fatigue state judgment is proposed which combines face detection and lightweight depth learning technology. First, the AdaBoost algorithm is used to detect the human face from the input images, and the images marked with human face regions are saved to the local folder, which is used as the sample dataset of the open-close judgment part. Second, a novel reconstructed pyramid structure is proposed to improve the MobileNetV2-SSD to improve the accuracy of target detection. Then, the feature enhancement suppression mechanism based on SE-Net module is introduced to effectively improve the feature expression ability. The final experimental results show that, compared with the current commonly used target detection network, the proposed method has better classification ability for eye state and is improved in real-time performance and accuracy.

Collapsible Pushdown Parity Games

This article studies a large class of two-player perfect-information turn-based parity games on infinite graphs, namely, those generated by collapsible pushdown automata. The main motivation for studying these games comes from the connections from collapsible pushdown automata and higher-order recursion schemes, both models being equi-expressive for generating infinite trees. Our main result is to establish the decidability of such games and to provide an effective representation of the winning region as well as of a winning strategy. Thus, the results obtained here provide all necessary tools for an in-depth study of logical properties of trees generated by collapsible pushdown automata/recursion schemes.

Mind the gap between discourses and practices: Platform workers’ representation in France and Italy

This article, based on a 6-month cross-national ethnography conducted in France and Italy, aims at contributing to comparative debates on the representation of platform workers. The study takes the cases of both traditional and alternative actors that currently represent platform workers. In particular, by investigating both trade unions and grassroots groups, research findings show the gap between discursive and effective representation in the two European countries studied. Drawing on Hyman and Gumbrell-McCormick’s concept of ‘variable geometry of resistance’, we discuss how these gaps are wider or narrower depending on to what extent – in the two countries and in the studied organizations – there is capacity to build both solidarity in difference and alliances between traditional and alternative actors.