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- Gee, Carole T., et al.
(författare)
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Postcards from the Mesozoic: ForestLandscapes with Giant Flowering Trees,Enigmatic Seed Ferns, and OtherNaked-Seed Plants
- 2020
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Ingår i: Nature Through Time. - Amsterdam : Elsevier. - 9783030350574 ; , s. 159-185
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Bokkapitel (refereegranskat)abstract
- Earth’s vegetation during the 186 million years of the Mesozoic, from the Paleogene–Cretaceous boundary at 66 million years ago back to the Triassic–Permian boundary at 252 million years ago, was filled with forests. Like today, the forest was the dominant terrestrial ecosystem. The trees that created the forest habitat, along with the other woody plants and ferns in the understory and groundcover, were the primary producers that powered Earth’s ecosystems by converting sunlight into chemical energy through photosynthesis. Yet, the forests that flourished during the Mesozoic differed from those found on Earth today. The Mesozoic climate was generally warmer, with milder seasons, a highersea level, and no polar ice. This resulted in evergreen forests that may have looked superficially similar to gymnosperm dominated forests of today, but were made up of very different kinds of plants. This is because major evolutionary changes took place in the plant world during this time interval. The Cretaceous witnessed the emergence and diversification of the flowering plants, which define our global flora now. In contrast, the Jurassic and Triassic floras were dominated by gymnosperms such as conifers and cycads, as well as by other, enigmatic, naked-seed plants including seedferns and bennettitaleans that are now extinct. Continental drift tore landmasses apart, separating Northern Hemisphere floras with ginkgoes from the Gondwana flora in the south, which also is now extinct. Geological time, biotic evolution, and plate tectonics all contributed to the making of paleobotanically unique forests in different parts of the world. In this chapter, we present a series of written postcards from the Mesozoic, each one describing a forested landscape, as we travel back in time together on a virtual plant safari.
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| 2. |
- Anderson, E F, et al.
(författare)
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Preserving and presenting cultural heritage using off-the-shelf software
- 2020
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Ingår i: Springer Series on Cultural Computing. - The National Centre for Computer Animation, Bournemouth University, Poole, United Kingdom : Springer. ; , s. 423-444
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The preservation and presentation of cultural heritage (CH) encompasses many domains and disciplines and ranges from tangible CH, traditionally taking the form of museum exhibits and historical sites that are open to the public to intangible CH, focussing on human and societal aspects of CH, as opposed to physical artefacts. The use of computer graphics (CG) and related techniques such as interactive virtual environments since the 1990s has had a profound impact on the presentation of and public engagement with CH, allowing virtual reconstruction of archaeological/historical sites as well as the virtual (re-)construction of culturally and historically relevant artefacts. These are frequently implemented using bespoke or proprietary systems, often explicitly created with a CH application in mind, which may require specialist expertise or significant investment. There exist, however, alternative approaches that can simplify and improve the uptake of CG for CH. In this chapter we discuss how off-the-shelf CG systems such as developer and artists’ tools for the entertainment industries, which are comparatively inexpensive, usually provide open developer licenses, and sometimes are even available free of charge, or affordable consumer-level hardware, can be used for the preservation and presentation of tangible and intangible CH, the application of which we illustrate with a set of case studies.
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| 3. |
- Anderson, John B
(författare)
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Faster than Nyquist signaling for 5G communication
- 2016
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Ingår i: Signal Processing for 5G. - Chichester, UK : John Wiley & Sons, Ltd. - 9781119116462 - 9781119116493 ; , s. 24-46
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Bokkapitel (refereegranskat)abstract
- Application of the faster than Nyquist signaling method to the upcoming fifth generation wireless system
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