Astronomical Distance Determination in the Space Age: Secondary Distance Indicators

The formal division of the distance indicators into primary and secondary leads to difficulties in description of methods which can actually be used in two ways: with, and without the support of the other methods for scaling. Thus instead of concentrating on the scaling requirement we concentrate on all methods of distance determination to extragalactic sources which are designated, at least formally, to use for individual sources. Among those, the Supernovae Ia is clearly the leader due to its enormous success in determination of the expansion rate of the Universe. However, new methods are rapidly developing, and there is also a progress in more traditional methods. We give a general overview of the methods but we mostly concentrate on the most recent developments in each field, and future expectations. © 2018, The Author(s)

Phenotype, Ultrastructure, and Function of CD1 + DR + Epidermal Cells that Express CD36 (OKM5) in Cutaneous T-Cell Lymphoma

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/74307/1/j.1365-3083.1990.tb02900.x.pd

Technology-enhanced learning in science

This chapter investigates the supportive role of new technologies in science learning. The first part presents the theoretical underpinnings of technology-enhanced learning (TEL) in science, framing TEL in the context of current sociocultural view of science learning as inquiry. The second part discusses the potential of TEL, which is organized around the potential of learning technologies to make science learning authentic and to provide the tools to sustain engaged participation in making sense of the physical and the natural world. Examples of learning technologies are presented and discussed. © 2009 Springer Netherlands