Four Leaves from 'La Hypnerotomachia di Polifilo'

Includes bibliographical reference

Altobello Melone's "Picenardi Alterpiece"

"The paintings of the Cremonese artist, Altobello Melone (flourished ca. 1508-1535) are not very well known, in part because relatively few of them are located outside of Italy. The recent migration of two of his works, both predella panels, Saint Helen QuestioningJudas and Proving of the True Cross, to the Museum of Art and Archaeology, University of Missouri-Columbia, is, then, especially welcomed. The arrival of the panels, which were formerly in a private collection in Milan, is unusually significant for another reason, too. The museum already owns the central panel of the altarpiece to which the two much smaller works originally belonged. Most importantly the panels offer the opportunity to appreciate two paintings of singular beauty."--First paragraph.Includes bibliographical reference

Paris Bordone's Athena Scorning the Advances of Hephaestus

Includes bibliographical reference

An Unpublished Caricatura by Domenico Tiepolo

Includes bibliographical reference

Methods Used in the NACA Tank for the Investigation of the Longitudinal-Stability Characteristics of Models of Flying Boats

Report presents the results of tests of longitudinal stability characteristics of models of several flying boats conducted in the NACA Tank No. 1. These investigations were made for the purpose of (1) determining suitable methods for evaluating the stability characteristics of models of flying boats, and (2) determining the design parameters which have an important effect on the porpoising. This report is mainly concerned with the construction of suitable models, the apparatus, and methods used in the tests. The effect of changes in some design parameters is discussed

Effect of Afterbody Length and Keel Angle on Minimum Depth of Step for Landing Stability and on Take-Off Stability of a Flying Boat

Tests were made to fill partly the need for information on the effect of afterbody dimensions on the hydrodynamic stability of a flying boat in smooth water. The dimensions investigated were depth of step, angle of afterbody keel, and length of afterbody. An analysis of the data showed that as either the afterbody length or keel angle was increased an accompanying increase in depth of step was required in order to maintain adequate landing stability. The landing-tests results have been reduced to an empirical formula giving the minimum depth of step in terms of afterbody length and keel angle. This formula is compared with results from other tank tests, and the correlation is fairly good. The formula thus becomes of use in preliminary design

A relational, indirect, meso-level approach to CSCL design in the next decade

This paper reviews some foundational issues that we believe will affect the progress of CSCL over the next ten years. In particular, we examine the terms technology, affordance, and infrastructure and we propose a relational approach to their use in CSCL. Following a consideration of networks, space, and trust as conditions of productive learning, we propose an indirect approach to design in CSCL. The work supporting this theoretical paper is based on the outcomes of two European networks: E-QUEL, a network investigating e-quality in e-learning; and Kaleidoscope, a European Union Framework 6 Network of Excellence. In arguing for a relational understanding of affordance, infrastructure, and technology we also argue for a focus on what we describe as meso-level activity. Overall this paper does not aim to be comprehensive or summative in its review of the state of the art in CSCL, but rather to provide a view of the issues currently facing CSCL from a European perspective