Using the school badge of Xi’an Jiaotong University as an example, this article aims to unravel that both literal expression and visual imagery have the ideographic function. The analysis in this article primarily utilizes the theoretical framework of the visual communication grammar, which is developed by Kress & Van Leeuwen from Halliday’s systemic functional linguistics. By analyzing the rep...

Henriques and Kamnitzer defined a commutator in the category of crystals for complex semisimple Lie algebras based on Lusztig’s involution on a crystal. More recently, Kamnitzer and Tingley proved that the action of this commutator on the highest weight elements (which determines it) is given by Kashiwara’s involution on the Verma crystal. Both of these definitions depend on some maps of crysta...

We analyze the correlation focusing objective functional introduced by van Leeuwen and Mulder to avoid the cycle-skipping problem in full waveform inversion. While some encouraging numerical experiments were reported in the transmission setting, we explain why the method cannot be expected to work for general reflection data. We characterize the form that the adjoint source needs to take for mo...

The surface critical behaviour of the semi–infinite one–dimensional quantum Ising model in a transverse field is studied in the presence of an aperiodic surface extended modulation. The perturbed couplings are distributed according to a generalized Fredholm sequence, leading to a marginal perturbation and varying surface exponents. The surface magnetic exponents are calculated exactly whereas t...

We prove a generalization of the van Leeuwen theorem towards quantum electrodynamics, providing the formal foundations of a time-dependent Kohn-Sham construction for coupled quantized matter and electromagnetic fields. We circumvent the symmetry-causality problems associated with the action-functional approach to Kohn-Sham systems. We show that the effective external fourpotential and four-curr...

Thijs, L. G., Kroon, T. A. J., and van Leeuwen, Th. M. (1974). Thorax, 29, 490-494. Leiomyosarcoma of the pulmonary trunk associated with pericardial effusion. The case history of a patient with a leiomyosarcoma of the pulmonary trunk is presented. The clinical picture was dominated by unexplained shortness of breath, episodes of cough and haemoptysis, general weakness, and weight loss. Signs o...

The argument for a pedagogy which embraces visual and multimodal representation is well established in academic circles (New London Group 1996, Kress and Van Leeuwen 1996, Cope and Kalantzis 2000) and a plethora of literacies congregate around the everexpanding subject English, as the prime site for innovation and development. However, the implications for current classroom practice are still e...

A projected mass estimator and a maximum likelihood estimator are developed to best determine the mass of stellar clusters from proper motion data. Both methods effectively account and correct for errors in the velocities, and provide an unbiased and robust estimate of the cluster mass. Using an extensive proper motion study of ω Centauri by van Leeuwen et al. (2000), we estimate the mass of ω ...