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In this paper, I critically reflect on my epistemological journey going from professional social work practice to finding a suitable qualitative research methodology for my doctoral research with Chinese high school international students in Canadian homes. I start with exploring the new face of homelessness that I observed among the Chinese students in my clinical practice. I then explore some of the reasons that bring them to Canada and engage in the critical examination of whiteness in the Canadian educational system. I conclude with proposing the metaphor of way-finding as a qualitative methodology for my doctoral research.

A technique of assembly simulation path planning based on engineering semantics is proposed. This method classifies the assembly paths and then describes them as templates based on engineering semantics. A fast assembly simulation path planning is realized by reusing the templates of the assembly path, which improves the efficiency of aircraft assembly simulation path planning.

First, the gray theory and analytic hierarchy brief overview, and then establish the evaluation index system, using the gray system theory and the analytic hierarchy process AHP gray formed to establish a specific hazardous materials transportation safety risk assessment model, Company X hazardous materials transportation risk evaluation, get the value of the company's risk level, and the evaluation value analysis.