A5051709425- Archaeology and Rock Art Studies
- South African History and Culture
- Legal Issues in South Africa
- Cultural History and Identity Formation
- African history and culture studies
- Quasicrystal Structures and Properties
- Historical and Literary Studies
- Historical Architecture and Urbanism
- Historical and Archaeological Studies
- Mathematical Dynamics and Fractals
- Digital Humanities and Scholarship
- African history and culture analysis
- African Botany and Ecology Studies
- Pleistocene-Era Hominins and Archaeology
- Wine Industry and Tourism
- semigroups and automata theory
- Historical Geography and Cartography
- Urban and Rural Development Challenges
- Botany and Plant Ecology Studies
- African studies and sociopolitical issues
- Global Maritime and Colonial Histories
- Plant Taxonomy and Phylogenetics
- Neurology and Historical Studies
- Horticultural and Viticultural Research
- Financial Crisis of the 21st Century
University of Nottingham
2019-2025
University of Glasgow
2019-2024
Astrobotic (United States)
2023
National Park Service
2009-2020
University of Bristol
2019
Durham University
2015-2018
University of York
2015-2017
University of Notre Dame
1983-2005
Portland State University
2000
University of Leeds
1934
SYNOPSIS The material culture of the early Sotho‐Tswana settlement in South Africa falls into a distinct three‐fold pattern, one aspect which is attributable to Bafokeng. Excavation Bafokeng settlements Basu‐toland has revealed traceable also southern Transvaal, north‐eastern Free State and Natal. This marked by paved circular hut floors for wattle thatch beehive huts, cave dwellings with huts built within caves, linked stone kraals pottery characterized elaborate distinctive rim...
Abstract We develop a systematic approach to continuous substitutions on compact Hausdorff alphabets. Focussing implications of irreducibility and primitivity, we highlight important features the topological dynamics their (generalised) subshifts. then reframe questions from ergodic theory in terms spectral properties corresponding substitution operator. This requires an extension standard Perron–Frobenius setting Banach lattices. As application, identify computable criteria that guarantee...
Abstract Regional warming has led to increased productivity near the boreal forest margin in Alaska. To date, effects of on seedling recruitment have received little attention, spite forecasted expansion. Here, we used stand structure and environmental data from 95 white spruce ( Picea glauca ) plots sampled across a longitudinal gradient southwest Alaska explore factors influencing establishment western treeline. We total counts live seedlings, saplings, trees, representing five life...
In a number of publications W. G. Collingwood has described the north country hogbacks and he suggested that they were replicas in stone dwellings prevailing at time among people responsible for their erection. He was primarily concerned, however, with development dating, based upon ornament employed. this paper I have concentrated rather on hogback as representation an Anglo-Danish house its bearing origin cruck construction. The is recumbent tombstone form long, low roofridge slightly...
We establish a connection between gaps problems in Diophantine approximation and the frequency spectrum of patches cut project sets with special windows. Our theorems provide bounds for number distinct frequencies size r, which depend on precise being used, are almost always less than power log r. Furthermore, substantial collection we show that r remains bounded as tends to infinity. The latter result applies full Hausdorff dimension.
For the development of a mathematical theory which can be used to rigorously investigate physical properties quasicrystals, it is necessary understand regularity patterns in special classes aperiodic point sets Euclidean space. In one dimension, prototypical models for quasicrystals are provided by Sturmian sequences and generated substitution rules. Regularity such well understood, thanks mostly known results Morse Hedlund, physicists have this understanding study dimensional random...
The main object of this paper is to draw attention the existence Late Stone Age sites in South West Africa where perishable organic remains are preserved, and particular ‘Big Elephant Cave’, discovered by Dr E. R. Scherz Erongo Mountains. These lie some 10 15 miles north-north-east Usakos, at approximately 21° 40′ S., 15° E., a region open grass steppe with stands thornbush, mainly Acacia, low sclerophytic scrub supported an annual rainfall between 150–200 millimetres. mountains rest on...
Erioderma pedicellatum (Hue) P.M. Jørg is a globally rare, foliose cyanolichen known from Scandinavia and southeastern Canada. In August 2007, several thalli of E. were collected in Denali National Park Preserve on the south side Alaska Range, Alaska, USA. Subsequently, additional observed nearby State Park. Together they represent first report within United States western North America mark major range extension for one most rare endangered lichens world. The existence third global...
The cut and project method is a central construction in the theory of Aperiodic Order for generating quasicrystals with pure point diffraction. Linear repetitivity (LR) form ideal regularity aperiodic patterns. Recently, Koivusalo present author characterised LR sets convex polytopal windows whose supporting hyperplanes are commensurate lattice, weak homogeneity property. For such sets, we show that equivalent to two properties. One low complexity condition, which may be determined from data...
Abstract We consider substitutions on compact alphabets and provide sufficient conditions for the diffraction to be pure point, absolutely continuous singular continuous. This allows one construct examples which Koopman operator associated function space has specific spectral components. For abelian bijective substitutions, we a dichotomy result regarding type of diffraction. also first example substitution that countably infinite Lebesgue components Lastly, give non‐constant length alphabet...
We inventoried lichens in Kenai Fjords National Park Alaska, USA assembled the known information on occurrence and ecology of this park by combining field, herbarium, literature studies. Our results provide baseline data lichen that may be used resource condition assessments, vulnerability long-term ecological monitoring, management. report a total 616 taxa lichenized fungi from Park, plus an additional five subspecies three varieties, all which are new additions to Service database for...
Parmelina quercina is a well-studied foliose macro-lichen found on rocks and trees in the Northern Hemisphere. Recent studies support multiple species within P. based material from Europe, North America western Asia. The identities of s.lat. reported eastern Asia Alaska remain unknown. We compared DNA sequences, secondary chemistry morphological traits Alaska, Russia China. These data resurrection yalungana to accommodate Asian Alaskan material. differs congeners ascospore dimensions,...
Research Article| March 01 1969 Conrad, Dickens, and the Detective Novel James Walton Search for other works by this author on: This Site PubMed Google Scholar Nineteenth-Century Fiction (1969) 23 (4): 446–462. https://doi.org/10.2307/2932684 Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Facebook Twitter LinkedIn MailTo Tools Get Permissions Cite Citation Walton; Novel. 1 1969; doi: Download citation file: Ris (Zotero) Reference Manager EasyBib...