Perovskite/Organic Tandem Solar Cells In article number 2204347, Tingting Shi, Hin-Lap Yip, Man-Keung Fung, Yue-Min Xie, and co-workers aim to minimize the energy loss of perovskite/organic tandem solar cells (POTSCs) induced by compromised wide-bandgap perovskite sub-cells. An ionic liquid, methylammonium formate, is proposed engineer top bottom all-inorganic (CsPbI2Br) interfaces, which leads...

We present a pattern matching method for compiling a bilingual lexicon of nouns and proper nouns from unaligned, noisy parallel texts of Asian/Indo-European language pairs. Tagging information of one language is used. Word frequency and position information for high and low frequency words are represented in two different vector forms for pattern matching. New anchor point finding and noise eli...

Application of positive matrix factorization in estimating aerosol secondary organic carbon in Hong Kong and insights into the formation mechanisms Z. B. Yuan, J. Z. Yu, A. K. H. Lau, P. K. K. Louie, and J. C. H. Fung Atmospheric, Marine and Coastal Environment Program, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China Department of Chemistry, The Hong Kong U...

In this analysis we identify dynamic hedge fund strategies quantitatively pursuing a Principal Component Analysis following Fung & Hsieh (1997). We extract five dominant hedge fund strategies each representing similar investment styles and analyse the performance of each strategy by employing a multi-factor model comprising both market indices and passive option strategies along the lines of Ag...