This realm, this England ... The citadel of a valiant race portrayed by its greatest etchers,

Plates: p. 13-156.

Etching & etchers,

Each plate accompanied by leaf with descriptive letterpress in red.

Modern etchers : short biographical sketches of the leading etchers of the present day, 1891.

Mode of access: Internet.

A dynamic sampling methodology for plasma etch processes using Gaussian process regression

Plasma etch is a key process in modern semiconductor manufacturing facilities as it offers process simplification and yet greater dimensional tolerances compared to wet chemical etch technology. The main challenge of operating plasma etchers is to maintain a consistent etch rate spatially and temporally for a given wafer and for successive wafers processed in the same etch tool. Etch rate measurements require expensive metrology steps and therefore in general only limited sampling is performed. Furthermore, the results of measurements are not accessible in real-time, limiting the options for run-to-run control. This paper investigates a Virtual Metrology (VM) enabled Dynamic Sampling (DS) methodology as an alternative paradigm for balancing the need to reduce costly metrology with the need to measure more frequently and in a timely fashion to enable wafer-to-wafer control. Using a Gaussian Process Regression (GPR) VM model for etch rate estimation of a plasma etch process, the proposed dynamic sampling methodology is demonstrated and evaluated for a number of different predictive dynamic sampling rules. © 2013 IEEE.

Joseph Pennell : etcher, illustrator, author /

"Reprinted, by permission, from 'The Outlook' of September 23rd, 1905."

The graphic arts; modern men and modern methods,

Mode of access: Internet.

Allgemeine Historie der Reisen zu Wasser und Lande, oder, Sammlung aller Reisebeschreibungen, welche bis itzo in verschiedenen Sprachen von allen Völkern herausgegeben worden : und einen vollständigen Begriff von der neuern Erdbeschreibung und Geschichte machen ... /

Includes indexes.

A classical and topographical tour through Greece, during the years 1801, 1805, and 1806,

Includes index.