Virtual Subjectivity: Existence and Projectuality in Virtual Worlds

This paper draws on the notion of the ‘project,’ as developed in the existential philosophy of Heidegger and Sartre, to articulate an understanding of the existential structure of engagement with virtual worlds. By this philosophical understanding, the individual’s orientation towards a project structures a mechanism of self-determination, meaning that the project is understood essentially as the project to make oneself into a certain kind of being. Drawing on existing research from an existential-philosophical perspective on subjectivity in digital game environments, the notion of a ‘virtual subjectivity’ is proposed to refer to the subjective sense of being-in-the-virtual-world. The paper proposes an understanding of virtual subjectivity as standing in a nested relation to the individual’s subjectivity in the actual world, and argues that it is this relation that allows virtual world experience to gain significance in the light of the individual’s projectual existence. The arguments advanced in this paper pave the way for a comprehensive understanding of the transformative, self-transformative, and therapeutic possibilities and advantages afforded by virtual worlds.

An Algorithm for Determining the Nested Relation between Contours of Complex Parts Applied in Laser Cutting

Designed a method based on the complexity of multiple nested parts to extract and analyze the information of parts. In order to simplify the algorithm and improve the efficiency of the program, a data structure stored all information of entities was presented. The theory of the region method was introduced in this paper, and a specific algorithm was designed to judge the nested relationship between contours by using this theory and entities information. Finally, the computational result can be used to determine the contour cutting order.