This book focuses on the stellar disk evolution and gas disk turbulence of the most numerous galaxies in the local Universe - the dwarf galaxies. The "outside-in" disk shrinking mode was established for a relatively large sample of dwarf galaxies for the first time, and this is in contrast to the "inside-out" disk growth mode found for spiral galaxies. Double exponential brightness profiles also correspond to double exponential stellar mass profiles for dwarf galaxies, which is again different from most spiral galaxies. The cool gas distribution in dwarf galaxies was probed with the spatial power spectra of hydrogen iodide (HI) gas emission, and provided indirect evidence that inner disks of dwarf galaxies have proportionally more cool gas than outer disks. The finding that no correlation exists between gas power spectral indices and star formation gave important constraints on the relation between turbulence and star formation in dwarf galaxies.

Based on the large corpora of journalistic English, this title examines dependency relations and related properties at both syntactic and discourse levels, seeking to unravel the language patterns of real-life usage. With a focus on rank-frequency distribution, the author investigates the distribution of linguistic properties/units from the perspectives of properties, motifs and sequencings. At the syntactic level, the book analyses the following three dimensions: various combinations of a complete dependency structure, valency and dependency distance. At the discourse level, it proves that the elements can also form dependency relations by exploring 1) the rank-frequency distribution of Rhetorical Structure Theory relations, their motifs, discourse valency and discourse dependency distance; 2) whether there is top-down organization or an inverted pyramid structure at all the three discourse levels and 3) whether discourse dependency distances and valencies are lawfully distributed, following the same distribution patterns as those at the syntactic level. This book will be of great value for scholars and students of quantitative linguistics and computational linguistics and its practical insights will also benefit professionals of language teaching and journalistic writing.

This book focuses on the stellar disk evolution and gas disk turbulence of the most numerous galaxies in the local Universe - the dwarf galaxies. The "outside-in" disk shrinking mode was established for a relatively large sample of dwarf galaxies for the first time, and this is in contrast to the "inside-out" disk growth mode found for spiral galaxies. Double exponential brightness profiles also correspond to double exponential stellar mass profiles for dwarf galaxies, which is again different from most spiral galaxies. The cool gas distribution in dwarf galaxies was probed with the spatial power spectra of hydrogen iodide (HI) gas emission, and provided indirect evidence that inner disks of dwarf galaxies have proportionally more cool gas than outer disks. The finding that no correlation exists between gas power spectral indices and star formation gave important constraints on the relation between turbulence and star formation in dwarf galaxies.