We review the various theoretical approaches that have recently been developed to interpret the two-photon photoemission (2PPE) spectra from clean and adsorbate-covered metal surfaces. To discuss the most salient features of the 2PPE process in a simple framework we adopt a paradigmatic model system comprising the occupied initial continuum or discrete states, a discrete unoccupied intermediate...

Jon Williamson’s Objective Bayesian Epistemology relies upon a calibration norm to constrain credal probability by both quantitative and qualitative evidence. One role of the calibration norm is to ensure that evidence works to constrain a convex set of probability functions. This essay brings into focus a problem for Williamson’s theory when qualitative evidence specifies non-convex constraint...

This paper takes the Human Resource Management course of School Economics and in Nantong University as research object. Based on concept OBE, it attempts to explore how human resource management colleges universities can effectively carry out teaching reform innovation practice by constructing five-in-one system under current digital background. The mainly qualitative method draw such conclusio...