| 1. |
- Toor, Salman, et al.
(författare)
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SNIC Science Cloud (SSC): A national-scale cloud infrastructure for Swedish academia
- 2017
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Ingår i: Proceedings - 13th IEEE International Conference on eScience, eScience 2017. - Los Alamitos, CA : IEEE Computer Society. ; , s. 219-227, s. 219-227
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Konferensbidrag (refereegranskat)abstract
- The cloud computing paradigm have fundamentally changed the way computational resources are being offered. Although the number of large-scale providers in academia is still relatively small, there is a rapidly increasing interest and adoption of cloud Infrastructure-as-a-Service in the scientific community. The added flexibility in how applications can be implemented compared to traditional batch computing systems is one of the key success factors for the paradigm, and scientific cloud computing promises to increase adoption of simulation and data analysis in scientific communities not traditionally users of large scale e-Infrastructure, the so called long tail of science. In 2014, the Swedish National Infrastructure for Computing (SNIC) initiated a project to investigate the cost and constraints of offering cloud infrastructure for Swedish academia. The aim was to build a platform where academics could evaluate cloud computing for their use-cases. SNIC Science Cloud (SSC) has since then evolved into a national-scale cloud infrastructure based on three geographically distributed regions. In this article we present the SSC vision, architectural details and user stories. We summarize the experiences gained from running a nationalscale cloud facility into ten simple rules for starting up a science cloud project based on OpenStack. We also highlight some key areas that require careful attention in order to offer cloud infrastructure for ubiquitous academic needs and in particular scientific workloads.
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| 2. |
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| 4. |
- Allington, Megan L., et al.
(författare)
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Obtaining archaeointensity data from British Neolithic pottery : A feasibility study
- 2021
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Ingår i: Journal of Archaeological Science: Reports. - : Elsevier BV. - 2352-409X. ; 37
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Tidskriftsartikel (refereegranskat)abstract
- There is a significant lack of geomagnetic field strength (archaeointensity) measurements for many archaeological time periods in the United Kingdom (UK). This not only makes past geomagnetic secular variation difficult to model but also limits the development of archaeointensity dating. This paper presents the first archaeointensity study on UK Neolithic material. In this study, twenty-five sherds of Neolithic Grooved Ware pottery from the Ness of Brodgar, Orkney, UK, some with direct radiocarbon dates, were subjected to a full archaeomagnetic investigation with the aim of increasing the amount of archaeointensity data for the UK. Both thermal Thellier and microwave palaeointensity experiments were used to determine which technique would be most suitable for British Neolithic pottery. Three successful archaeointensity results between 35 and 40μT were obtained using thermal Thellier method, which is consistent with the limited data available within a 15° radius and geomagnetic field model predictions from the same time. We separated the results into four different types with an intention of explaining the behaviours that determine the likelihood of achieving an acceptable archaeointensity estimate. The feasibility of obtaining geomagnetic field strength information during the UK Neolithic from ceramics has been demonstrated and the results provide a solid basis for improving our knowledge of geomagnetic secular variation during archaeological time in Britain.
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| 5. |
- Allington, Megan, et al.
(författare)
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New Archaeointensity Results from the Iron Age in Southern Africa
- 2023
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Abstract In this study we present new palaeointensity measurements on Iron Age (200 AD – 1840 AD) pottery from the southern Africa region, where there is only limited data available at present. Many sites only produce a single accepted palaeointensity result and we have therefore opted to focus on analysis at sample level as opposed to site level, which is more common in traditional archaeomagnetic investigations. This strategy allows a large number of locations to be included and, as we demonstrate, a chance to evaluate regional and global geomagnetic field model predictions. Some of the initial palaeointensity estimates are anomalously low (< 10 µT), but after adding more strict criteria that relate to direction statistics, the intensity estimates that are accepted fall into a narrower range consistent with geomagnetic field model predictions. Overall, we find that the new data are consistent with the limited regional data and available secular variation curves. An archaeomagnetic dating example is presented following established procedures adapted for sample level data by considering that the real uncertainty of the palaeointensity estimate is largely unknown. The modified dating approach is applied to a Botswanan site from thisstudy, which is dated to the mid- to late- Iron Age.
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| 6. |
- Boethius, Adam, et al.
(författare)
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Knowledge from the ancient sea : a long-term perspective of human impact on aquatic life in Mesolithic Scandinavia
- 2020
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Ingår i: The Holocene. - : SAGE Publications. - 0959-6836 .- 1477-0911. ; 30:5, s. 632-645
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Tidskriftsartikel (refereegranskat)abstract
- Lately, evidence for early-Holocene emerging sedentism has been suggested among foragers in Northern Europe. The core of this suggested sedentism lies in the increasing dependency on large-scale fishing and mass consumption of fish and a territorial behaviour associated with access to the best fishing locations. This territoriality might also be associated with increasing numbers of people settling and living in Northern Europe at this time. In this article, we review the evidence for forager sedentism and territoriality and relate it to large-scale fishing, during a time of global warming, in early-Holocene Scandinavia. We explore the requisites of using the archaeological record to study the long-term effect of intense fishing on some of the best-preserved Stone Age sites in the area of study. We suggest that the archaeological record can enable a discussion of how aquatic life varies corresponding to human exploitation and climate change. In addition, we discuss how these changes might be traceable through temporal fluctuations in species composition, within species size reduction/increases, temporal fish age changes and within species dietary changes. In the end, we suggest that the archaeological record holds one of the keys to predict future impact on life below the surface, by offering a long-term perspective on aquatic exploitation in a period of climate change. At the same time as we acknowledge the potential hidden in the archaeological record, we also raise the dire warning that this record might be rapidly disappearing, because of an accelerated deterioration of archaeological organic remains in areas previously known for their good preservation.
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| 7. |
- Grøn, Ole, et al.
(författare)
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Acoustic mapping of submerged stone age sites—A HALD approach
- 2021
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Ingår i: Remote Sensing. - : MDPI AG. - 2072-4292. ; 13:3
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Tidskriftsartikel (refereegranskat)abstract
- Acoustic response from lithics knapped by humans has been demonstrated to facilitate effective detection of submerged Stone Age sites exposed on the seafloor or embedded within its sediments. This phenomenon has recently enabled the non-invasive detection of several hitherto unknown submerged Stone Age sites, as well as the registration of acoustic responses from already known localities. Investigation of the acoustic-response characteristics of knapped lithics, which appear not to be replicated in naturally cracked lithic pieces (geofacts), is presently on-going through laboratory experiments and finite element (FE) modelling of high-resolution 3D-scanned pieces. Experimental work is also being undertaken, employing chirp sub-bottom systems (reflection seismic) on known sites in marine areas and inland water bodies. Fieldwork has already yielded positive results in this initial stage of development of an optimised Human-Altered Lithic Detection (HALD) method for mapping submerged Stone Age sites. This paper reviews the maritime archaeological perspectives of this promising approach, which potentially facilitates new and improved practice, summarizes existing data, and reports on the present state of development. Its focus is not reflection seismics as such, but a useful resonance phenomenon induced by the use of high-resolution reflection seismic systems.
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| 8. |
- Nilsson, Andreas, et al.
(författare)
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Dalbys förhistoria
- 2012
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Ingår i: Locus celebris : Dalby kyrka, kloster och gård - Dalby kyrka, kloster och gård. - 9789170611162 ; , s. 337-342
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Bokkapitel (refereegranskat)
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| 9. |
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| 10. |
- Nilsson, Andreas, et al.
(författare)
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Mysteriet i Dalby Söderskog
- 2018
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Ingår i: Dalby Söderskog nationalpark 100 år. - 9789176751145
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Bokkapitel (populärvet., debatt m.m.)
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