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- Björk, Magnus, 1977, et al.
(författare)
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Exposed Datapath for Efficient Computing
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- We introduce FlexCore, which is the first exemplar of a processor based on the FlexSoC processor paradigm. TheFlexCore utilizes an exposed datapath for increased performance. Microbenchmarks yield a performance boost of a factor of two over a traditional five-stage pipeline with the same functional units as the FlexCore.We describe our approach to compiling for the FlexCore.A flexible interconnect allows the FlexCore datapath to bedynamically reconfigured as a consequence of code generation. Additionally, specialized functional units may be introduced and utilized within the same architecture and compilation framework. The exposed datapath requires a wide control word. The conducted evaluation of two micro benchmarks confirms that this increases the instruction bandwidth and memory footprint. This calls for an efficient instruction decoding as proposed in the FlexSoC paradigm.
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- Alopaeus, Tea, et al.
(författare)
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Med de nya svenska klimatmålen i sikte : Gapanalys samt strategier och förutsättningar för att nå etappmålen 2030 med utblick mot 2045
- 2017
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Under våren 2017 presenterade Naturvårdsverket scenarier för hur växthusgasutsläppen i Sverige skulle kunna utvecklas till 2035. Sedan Naturvårdsverket presenterade scenarierna har ett nytt klimatpolitiskt ramverk för Sverige beslutats av riksdagen med nya klimatmål till 2030, 2040 och 2045. Regeringen har även presenterat ett antal nya styrmedel i budgetpropositionen.Naturvårdsverket ska inom miljömålssystemet löpande och strategiskt analysera och utvärdera styrmedel och åtgärder. Naturvårdsverket har mellan maj och november 2017 gjort en första uppföljning mot de nya klimatmålen. I denna rapport presenteras hur beslutade och planerade styrmedel kan komma att falla ut givet olika antagande. En översiktlig analys av styrmedel görs också.Arbetsgruppens sammansättning har varierat över tid. Sammantaget har följande personer på Naturvårdsverket deltagit i arbetsgruppen: Tea Alopaeus (projektledare), Björn Boström, Mats Björsell, Martin Boije, Joanna Dickinson, Dag Henning, Daniel Engström Stenson, Eva Jernbäcker (projektledare till september), Julien Morel, Miriam Münnich Vass, Karl-Anders Stigzelius, Ulrika Svensson, Per Wollin.Stockholm 29 november 2017Björn RisingerGeneraldirektör
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| 6. |
- Andersson, Per, 1964-, et al.
(författare)
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Att vara folkhögskollärare : förutsättningar, kompetensbehov och tidsanvändning
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Den här rapporten kartlägger folkhögskollärares arbete, tidsanvändning, kompetens och kompetensbehov.Syftet är att ge en bild av folkhögskolans lärare utifrån dessa aspekter, och på så sätt kunna beskriva folkhögskollärarna som profession. Syftet är också att visa vilka uppgifter som ingår i lärarnas arbete samt hur de ser på och hanterar dessa uppgifter.
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- Bastviken, David, et al.
(författare)
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Chlorine cycling and fates of 36Cl in terrestrial environments
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Chlorine-36 (36Cl), a radioisotope of chlorine (Cl) with a half-life of 301,000 years, is present in some types of nuclear waste and is disposed in repositories for radioactive waste. As the release of 36Cl from such repositories to the near surface environment has to be taken into account it is of interest to predict possible fates of 36Cl under various conditions as a part of the safety assessments of repositories for radioactive waste. This report aims to summarize the state of the art knowledge on Cl cycling in terrestrial environments. The view on Cl cycling in terrestrial environments is changing due to recent research and it is clear that the chloride ion (Cl–) is more reactive than previously believed. We group the major findings in three categories below according to the amount of data in support of the findings.From the result presented in this report it is evident that:There is an ubiquitous and extensive natural chlorination of organic matter in terrestrial ecosystems.The abundance of naturally formed chlorinated organic compounds (Clorg) frequently exceeds the abundance of Cl–, particularly in soils. Thereby Clorg in many cases dominates the total Cl pool.This has important implications for Cl transport. When reaching surface soils Cl– will not be a suitable tracer of water and will instead enter other Cl pools (Clorg and biomass) that prolong residence times in the system.Cl– dominates import and export from terrestrial ecosystems while Clorg and biomass Cl can dominate the standing stock Cl within terrestrial ecosystems.Both Cl and Clorg pools have to be considered separately in future monitoring programs addressing Cl cycling.Further, there are also indications (in need of confirmation by additional studies) that:There is a rapid and large uptake of Cl– by organisms and an accumulation in green plant parts. A surprisingly large proportion of total catchment Cl (up to 60%) can be found in the terrestrial biomass.Emissions of total volatile organohalogens could be a significant export pathway of Cl from the systems.Some of the Clorg may be very persistent and resist degradation better than average organic matter. This may lead to selective preservation of some Clorg (with associated low bioavailability).There is a production of Clorg in tissues of e.g. plants and animals and Cl can accumulate aschlorinated fatty acids in organisms.Most other nevertheless important aspects are largely unknown due to lack of data. Key unknowns include:The development over time of major Cl pools and fluxes. As long as such data is lacking we cannot assess net changes over time.How the precesses behind chlorination, dechlorination and transport patterns in terrestrial systems are regulated and affected by environmental factors.The ecological roles of the chlorine cycling in general.The ecological role of the microbial chlorination in particular.The chlorine cycling in aquatic environments – including Cl– and Clorg pools in sediment and water, are largely missing.Given the limited present information available, and particularly the lack of data with a temporal dimension and the lack of process understanding, predictive models are challenging. We also summarize currently available methods to study Cl in the environment.
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