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  • 201.
    Alexandersson, Ellen
    RISE., Swedish ICT, Viktoria.
    Induktiv laddning och hälsoeffekter: RAPPORT - OMVÄRLDSANALYSKRING ELEKTROMAGNETISKAFÄLT VID INDUKTIV LADDNING AVELFORDON2013Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Elfordon representerar en av de mest lovande vägarna för att nå en fossiloberoende transportsektor och minska koldioxidutsläpp och luftföroreningar. Induktiv laddning av elfordon öppnar för möjligheten att ladda helt automatiskt vilket många tror kan höja elfordonens attraktionskraft och därmed öka försäljningstakten av elfordon. Dock har diskussioner redan satt igång huruvida läckfält vid energiöverföringen kan påverka människor.

    Elektromagnetiska fält finns naturligt i vår omgivning, men beroende på typ av fält, frekvens och fältstyrka interagerar de med kroppen på olika sätt. Fält för induktionsladdning ligger i ett intermediärt frekvensområde, det vill säga frekvensmässigt mellan kraftfrekventa och radiofrekventa fält. För kraft- och radiofrekventa fält har en hel del forskning genomförts kring fältens kopplingar till biologiska interaktioner och eventuell negativ hälsopåverkan. Utifrån resultaten har rekommendationer för högsta exponeringsnivåer för fälten tagits fram, även om många av resultaten fortfarande är tvetydiga. För de intermediära fälten saknas i stort sett forskning och därför har rekommendationer för dessa fält i stora delar extrapolerats fram utifrån resultat för kraft- och radiofrekvenser.

    Frågorna kring huruvida fält från induktiv laddning kan orsaka hälsoeffekter är därmed fortfarande oklara och därför bör försiktighetsprincipen tillämpas. Vi behöver också koppla samman forskning kring teknikutveckling med forskning som utreder eventuella hälsoeffekter för att höja kunskapsnivån. Därmed kan vi förekomma risken att en debatt blossar upp i samhället där vi står utan svar, vilket skulle kunna påverka elfordonens introduktion i Sverige negativt.

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  • 202. Alexandrova, L
    et al.
    Hanumantha Rao, K
    Forsberg, KSE
    Grigorov, L
    Pugh, RJ
    YKI – Ytkemiska institutet.
    Three-phase contact parameters measurements for silica-mixed cationic-anionic surfactant systems2009Ingår i: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 348, nr 1-3, s. 228-233Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The stability and interactions in thin wetting films between the silica surface and air bubble containing (a) straight chain C10 amine and (b) cationic/anionic surfactant mixture of a straight chain C10 amine with sodium C8, C10 and (straight chain) C12 sulfonates, were studied using the microscopic thin wetting film method developed by Platikanov [D. Platikanov, J. Phys. Chem. 68 (1964) 3619]. Film lifetimes, three-phase contact (TPC) expansion rate, receding contact angles and surface tension were measured. The presence of the mixed cationic/anionic surfactants was found to lessen contact angles and suppresses the thin aqueous film rupture, thus inducing longer film lifetime, as compared to the pure amine system. In the case of mixed surfactants heterocoagulation could arise through the formation of positively charged interfacial complexes. Mixed solution of cationic and anionic surfactants shows synergistic lowering in surface tension. The formation of the interfacial complex at the air/solution interface was confirmed by surface tension data. It was also shown, that the chain length compatibility between the anionic and cationic surfactants system controls the strength of the interfacial complex. The observed phenomena were discussed in terms of the electrostatic heterocoagulation theory, where the interactions can be attractive or repulsive depending on the different surface activity and charge of the respective surfactants at the two interfaces.

  • 203. Alexandrova, L
    et al.
    Hanumantha, Rao K
    Forsberg, KSE
    Grigorov, L
    Pugh, Robert J
    YKI – Ytkemiska institutet.
    The influence of mixed cationic-anionic surfactants on the three-phase contact parameters in silica-solution systems2011Ingår i: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 373, s. 145-151Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The formation of thin wetting films on silica surface from aqueous solution of (a) tetradecyltrimetilammonium bromide (C14TAB) and (b) surfactant mixture of the cationic C14TAB with the anionic sodium alkyl- (straight chain C12-, C14- and C16-) sulfonates, was studied using the microscopic thin wetting film method developed by Platikanov. Film lifetimes, three-phase contact (TPC) expansion rates, receding contact angles and surface tension were measured. It was found that the mixed surfactants caused lower contact angles, lower rates of the thin aqueous film rupture and longer film lifetimes, as compared to the pure C14TAB. This behavior was explained by the strong initial adsorption of interfacial complexes from the mixed surfactant system at the air/solution interface, followed by adsorption at the silica interface. The formation of the interfacial complexes at the air/solution interface was proved by means of the surface tension data. It was also shown, that the chain length compatibility between the anionic and cationic surfactants controls the strength of the interfacial complex and causes synergistic lowering in the surface tension. The film rupture mechanism was explained by the heterocoagulation mechanism between the positively charged air/solution interface and the solution/silica interface, which remained negatively charged.

  • 204. Alexandrova, L
    et al.
    Pugh, RJ
    YKI – Ytkemiska institutet.
    Tiberg, F
    YKI – Ytkemiska institutet.
    Grigorov, L
    Confirmation of the heterocoagulation theory of flotation1999Ingår i: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 15, s. 7464-7471Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To model the flotation process, we have used the microscopic method developed by Scheludko to study the stability of an aqueous thin film containing tetradecyltrimethylammonium bromide ( C14TAB ) between an air bubble and a silica substrate. Experiments were performed at a range of C14TAB concentrations and pH values. Spontaneous rupture of the thin aqueous film was interpretated in terms of heterocoagulation resulting from the preferential adsorption of relatively low surfactant concentrations at the vapour/solution interface causing a net positive charge while the solution/silica interface remained negatively charged. In addition, during the the three-phase-contact (TPC) expansion or de-wetting step following film rupture, the movement of TPC across the silica substrate leads to transfer of amine from the vapour/solution interface to the vapour/silica. This process resembles a Langmuir-Blodgett deposition process and emphasized the importance of the solution/vapour interface in the de-wetting process.

  • 205. Alfredsen, Gry
    et al.
    Pilgård, Annica
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Effects of leaching on Postia placenta decay of acetic anhydride treated wood2013Ingår i: Proceedings of the 9th Meeting of the Northern European Network for Wood Science and Engineering, 2013, , s. 209-214Konferensbidrag (Övrigt vetenskapligt)
  • 206.
    Alfredsen, Gry
    et al.
    Norwegian Forest and Landscape Institute, Norway.
    Pilgård, Annica
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad.
    Postia placenta decay of acetic anhydride modified wood – effect of leaching2014Ingår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 9, nr 3, s. 162-169Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    It is well established that acetylation of wood by the use of acetic anhydride is able to impart a significant degree of decay resistance. The aim of this work was to study how a standardized leaching procedure with water (EN 84) affected the degradation of acetic anhydride modified samples by the brown rot fungi Postia placenta compared to no leaching prior to incubation. Three different levels (low, medium, and high) of acetic anhydride modified Southern yellow pine (SYP; Pinus spp.) were tested. The samples were harvested after 4 and 28 weeks. Wecompared changes in mass loss, wood moisture content, fungal DNA, and gene expression from five genes. If leaching changes the acetylated samples and makes them more susceptible for fungal deterioration, the expected effect would be higher levels of these parameters. Generally, leaching resulted in few differences between leached and nonleached samples at low levels of acetylation, while no changes were found for the highest acetylation level. No differences were found in gene expressions after 28 weeks. The possible protection of acetylated wood against oxidative fungal degradation is suggested to be interpreted in combination with the lowered wood moisture content.

  • 207. Alfredsen, Gry
    et al.
    Pilgård, Annica
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Hietala, Ari
    A step towards a better understanding of fungal colonization of modified wood - QRT-PCR studies2010Ingår i: Proceedings of IRG Annual Meeting, 2010, , s. 9Konferensbidrag (Övrigt vetenskapligt)
  • 208.
    Alfredsen, Gry
    et al.
    Norwegian Forest and Landscape Institute, Norway.
    Ringman, Rebecka
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Material och produkter (TRm).
    Pilgård, Annica
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad. Technical University of Munich, Germany.
    Fossdal, Carl Gunnar
    Norwegian Forest and Landscape Institute, Norway.
    New insight regarding mode of action of brown rot decay of modified wood based on DNA and gene expression studies: A review2015Ingår i: International Wood Products Journal, ISSN 2042-6445, E-ISSN 2042-6453, Vol. 6, nr 1, s. 5-7Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Modified wood shows resistance against wood deteriorating fungi, but the mechanisms are still not fully understood. The aim of this paper was to summarise the molecular studies performed on modified wood with regard to brown rot decay fungi. The DNA data showed that fungi are present inside the laboratory wood test samples already after two weeks of inoculation. Generally the fungal DNA content reflects mass loss and wood moisture content. The oxidative gene expression seems to be higher in modified wood than in untreated wood and it tend to increase during incubation. Based on the gene expression data we suggest that the hypothesis of lack of substrate recognition by the fungus should be rejected. In the reviewed studies, total wood moisture content in the samples was generally not low enough to inhibit fungal colonisation. Hence, moisture distribution within the wood should be studied more closely.

  • 209. Alfredsen, Gry
    et al.
    Westin, Mats
    SP - Sveriges Tekniska Forskningsinstitut / Trätek.
    Durability of modified wood – Laboratory vs field performance2009Ingår i: Proceedings of The Fourth European Conference on Wood Modification., SP Technical Research Institute of Sweden , 2009, , s. 515-522Konferensbidrag (Övrigt vetenskapligt)
  • 210.
    Alfredson, J.
    et al.
    SAAB, Sweden.
    Johansson, B. J. E.
    Linköping University, Sweden.
    Trabasso, L. G.
    Aeronautics Institute of Technology, Brazil.
    Schminder, J.
    Linköping University, Sweden.
    Granlund, R.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Gårdhagen, R.
    Linköping University, Sweden.
    Design of a distributed human factors laboratory for future air systems2018Ingår i: 31st Congress of the International Council of the Aeronautical Sciences, ICAS 2018, 2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper presents a rationale for structuring a distributed human factors laboratory for future air systems. The distributed herein refers to two aspects: content and geographic. As for content, the laboratory is structured in two levels, namely, individual, and team. As for geographic, the laboratory infrastructure is distributed in three physically separate facilities, namely, Department of Computer and Information Science (IDA) and Department of Management and Engineering (IEI) from Linköping University - Sweden and the Competence Center in Manufacturing from the Aeronautics Institute of Technology (ITA) - Brazil.

  • 211.
    Alfredsson, Robert
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jarl, Marie-Louice
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Bestämning av sammansättning hos PVC-produkter från gamla hus.1999Rapport (Refereegranskat)
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  • 212.
    Algehed, Jessica
    et al.
    foginnovation, Sweden.
    Eneqvist, Erica
    RISE - Research Institutes of Sweden, Samhällsbyggnad, Energi och cirkulär ekonomi.
    Jensen, Christian
    University of Gothenburg, Sweden.
    Lööf, Jenny
    RISE - Research Institutes of Sweden, Samhällsbyggnad, Energi och cirkulär ekonomi.
    Innovation + stadsutveckling = sant?2019Ingår i: INNOVATION OCH STADSUTVECKLING : En forskningsantologi om organiseringsutmaningar för stad och kommun / [ed] Jessica Algehed, Erica Eneqvist,Christian Jensen & Jenny Lööf, 2019, s. 5-12Kapitel i bok, del av antologi (Övrigt vetenskapligt)
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  • 213.
    Algehed, Jessica
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi.
    Winnes, Kajsa
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Systemanalys.
    Miljökultur: vad vet forskarna om kulturens och tjänsternas miljöpåverkan2010Rapport (Refereegranskat)
    Abstract [sv]

    Denna rapport är en översikt av vad vi har funnit hittills i den vetenskapliga litteraturen om kulturens och tjänsternas miljöpåverkan.

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  • 214.
    Ali, Khayri Mohammed
    RISE - Research Institutes of Sweden, ICT, SICS.
    A method for implementing out in parallel execution of Prolog1987Rapport (Övrigt vetenskapligt)
    Abstract [en]

    A method for implementing cut in parallel execution of Prolog is presented. It takes advantages of the efficient implementation of cut in the sequential WAM. It restricts the parallelism, however, it is simple and adds a small extra overhead over the sequential scheme. The method can be used in parallel execution of Prolog on shared amd nonshared memory multiprocessors.

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  • 215.
    Ali, Khayri Mohammed
    RISE., Swedish ICT, SICS.
    A Simple Generational Real-time Garbage Collection Scheme1998Ingår i: New generation computing, ISSN 0288-3635, E-ISSN 1882-7055, Vol. 16, s. 201-221Artikel i tidskrift (Refereegranskat)
  • 216.
    Ali, Khayri Mohammed
    RISE - Research Institutes of Sweden, ICT, SICS.
    OR parallel execution of horn clause programs based on WAM and shared control information1988Rapport (Övrigt vetenskapligt)
    Abstract [en]

    A method for OR parallel execution of Horn clause programs on a shared memory multiprocessor is presented. The shared memory contains only control information that guide processors requesting a job to independently construct the environment required to get a new job from the other processors without degrading the performance. Each processor has a local memory containing its own binding environment. This reduces the traffic to the shared memory and allows each processor to process its job with high performance. Each processor is almost the same as the Warren Abstract Machine (WAM). Modification to the WAM for supporting the method is described in detail. A method for nonshared memory multiprocessor architecture is outlined.

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  • 217.
    Ali, Khayri Mohammed
    RISE - Research Institutes of Sweden, ICT, SICS.
    OR parallel execution of Prolog on BC-machine1988Rapport (Övrigt vetenskapligt)
    Abstract [en]

    We present the principles of OR-parallel execution of Prolog on a special parallel inference machine, named BC-machine. The machine is a combined local and shared memory multiprocessor with a special interconnection network. The network allows write operations of an active processor to be broadcasted to several idle processors simultaneously. The shared memory is mainly used for sharing some control information among processors in the system. The amount of shared control information is small and accessed relatively seldom. The execution model is based on the local address space approach. It allows all the technology developed for standard Prolog to be used without loss of efficiency. We expect that the model substantially reduces the copying overhead in comparision with all previous related models. This reduction is due to our new idea of dynamic load balancing and the broadcast mechanism supported by the network. A prototype system of 9 processors is under construction at the Swedish Institute of Computer Science in Stockholm.

  • 218.
    Ali, Khayri Mohammed
    RISE., Swedish ICT, SICS.
    OR-Parallel Execution of Prolog on a Multi-Sequential Machine1986Rapport (Refereegranskat)
    Abstract [en]

    Based on extending the sequential execution model of Prolog to include parallel execution, we present a method for OR-parallel execution of Prolog on a multiprocessor system. The method reduces the overhead incurred by parallel processing. It allows many processing elements (PEs) to process simultaneously a common branch of a search tree, and each of these PEs creates its local environment and selects a subtree for processing without communication. The run-time overhead is small: simple and efficient operations for selecting the proper subtree. Communication is necessary only when some PEs have exhausted their search spaces and there are others still searching for solutions. The method is able to utilize most of the technology devised for sequential implementation of Prolog. It is optimized for an architecture which supports broadcast copying.

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  • 219.
    Ali, Khayri Mohammed
    et al.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Haridi, Seif
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Global garbage collection for distributed heap storage systems1987Rapport (Övrigt vetenskapligt)
    Abstract [en]

    We present a garbage-collection algorithm, suitable for loosely-coupled multiprocessor systems, in which the processing elements (PE's) share only the communication medium. The algorithm is global, i.e. it involves all the PE's in the system. It allows space compaction, and it uses a system-wide marking phase to mark all accessible objects where a combination of parallel breadth-first/depth-first strategies is used for tracing the object-graphs according to a decentralized credit mechanism that regulates the number of garbage collection messages in the system. The credit mechanism is crucial for determining the space requirement of the garbage-collection messages. Also a variation of the above algorithm is presented for systems with high locality of reference. It allows each PE to perform first its local garbage collection and only invokes the global garbage collection when the freed space by the local collector is insufficient.

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  • 220.
    Ali, Khayri Mohammed
    et al.
    RISE., Swedish ICT, SICS.
    Karlsson, Roland
    RISE., Swedish ICT, SICS.
    The Engine-Scheduler Interface used in the Muse OR-parallel Prolog System1992Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Almost any sequential Prolog system is in principle easy to extend for OR-parallelism, using the Muse execution model. To reduce your programming effort we have implemented the Muse scheduler, with a clean interface to the Prolog sequential engine. This interface is implemented as a set of C macros. The sequential Prolog system to be parallelized uses some of those macros provided by the Muse scheduler and must also provide some macros for the Muse scheduler. This chapter paper contains a definition and description of the required macros, emphasizing information needed by the Prolog engine programmer.

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  • 221.
    Ali, Khayri Mohammed
    et al.
    RISE., Swedish ICT, SICS.
    Karlsson, Roland
    RISE., Swedish ICT, SICS.
    Mudambi, Shyam
    Performance of Muse on Switch-Based Multiprocesor Machines1992Rapport (Övrigt vetenskapligt)
    Abstract [en]

    The Muse (multiple sequential Prolog engines) approach has been used to make a simple and efficient OR-parallel implementation of the full Prolog language. The performance results of the Muse system on bus-based multiprocessor machines have been presented in previous chapters, papers. This chapter paper discusses the implementation and performance results of the Muse system on switch-based multiprocessors (the BBN Butterfly GP1000 and TC2000). The results of Muse execution show that high real speedups can be achieved for Prolog programs that exhibit coarse-grained parallelism. The scheduling overhead is equivalent to around 8 -- 26 Prolog procedure calls per task on the TC2000. The chapter paper also compares the Muse results with corresponding results for the Aurora OR-parallel Prolog system. For a large set of benchmarks, the results are in favor of the Muse system.

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  • 222.
    Ali, Khayri Mohammed
    et al.
    RISE - Research Institutes of Sweden, IKT, SICS.
    Wong, Milton
    An investigation of an OR parallel execution model for horn clause programs1988Rapport (Övrigt vetenskapligt)
    Abstract [en]

    We present a model for OR parallel execution of Horn clause programs on a combined local and shared memory multiprocessor system. In this model, the shared memory only contains control information that guides processors requesting a job to independently construct the environment required to get a new job. Each processor has a local memory containing its own binding environment. This reduces the traffic to the shared memory and allows each processor to process its job with high performance. Each processor is almost the same as Warren's Abstract Machine (WAM). A method for nonshared memory multiprocessor architectures is outlined. We also present some preliminary results of an experimental investigation of the model.

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  • 223.
    Ali, Muneeb
    et al.
    RISE., Swedish ICT, SICS.
    Umar, Saif
    Dunkels, Adam
    RISE., Swedish ICT, SICS.
    Voigt, Thiemo
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Römer, Kay
    Langendoen, Koen
    Polastre, Joseph
    Uzmi, Zartash Afzal
    Medium access control issues in sensor networks2006Ingår i: Computer communication review, ISSN 0146-4833, E-ISSN 1943-5819, Vol. 36, s. 33-36Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Medium access control for wireless sensor networks has been a very active research area for the past couple of years. The sensor networks literature presents an alphabet soup of medium access control protocols with almost all of the works focusing only on energy efficiency. There is much more innovative work to be done at the MAC layer, but current efforts are not addressing the hard unsolved problems. Majority of the works appearing in the literature are "least publishable incremental improvements" over the popular S-MAC [1] protocol. In this paper we present research directions for future medium access research. We identify some open issues and discuss possible solutions.

  • 224.
    Ali, Muneeb
    et al.
    RISE., Swedish ICT, SICS.
    Voigt, Thiemo
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Uzmi, Zartash Afzal
    Mobility Management in Sensor Networks2006Konferensbidrag (Refereegranskat)
  • 225.
    Ali, Noman Mumtaz
    et al.
    CNS.
    Potys, Robert
    RISE, Swedish ICT, SICS. IMIT.
    Implementation and Evaluation of NetInf TP, an Information-centric Transport Protocol2013Självständigt arbete på avancerad nivå (masterexamen)Studentuppsats (Examensarbete)
    Abstract [en]

    In recent times, there has been a significant growth in the number of Internet users, resulting in an increased demand for different types and amounts of content. As content distribution over the Internet has become a key issue, one proposal is that the Internet architecture could evolve to a more ``Information-Centric'' paradigm instead of the currently designed ``Host-Centric'' paradigm. In the host-based architecture, the data is often restricted to a location and will become unavailable if the host holding the data (or network connection) becomes unreachable. With the Information-centric data approach, the requestor requests data and receives it regardless of where the data actually originated from. Hence, the focus moves from ``where'' to ``what'' one is interested in. The heterogeneity of access methods and devices makes this type of approach even more appealing, especially when caching of data at intermediate points can be achieved. The prototype developed in the thesis builds an important part of the Information-Centric vision, that is a receiver-driven transport protocol. This is in contrast to the host-centric transport protocols which are always source driven. The advantage of having the receiver driven feature is to allow for multiple senders or receivers of the same data. That is, one receiver may ask more than one holder to send different pieces of the same file. We have implemented, simulated and assessed the performance of the proposed protocol, hereby called NetInf TP. Since the protocol may have to co-exist with existing sender driven TCP implementations for some time, we have looked at the inter-operation of NetInf TP with TCP variants from both qualitative and quantitative perspectives.

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  • 226.
    Aliasgari, Mahdis
    et al.
    Lighting Design Collective, Spain.
    Clark, Brendon
    RISE - Research Institutes of Sweden, ICT, Interactive.
    Baby steps or stage dive into a critical design dialogue2017Ingår i: Interaction design & architectures Journnal IxD&A, ISSN 1826-9745, Vol. 2017, nr 32, s. 38-47Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper puts forward the early, practical actions "in context" that can begin to sensitize, orient, expand, and constrain design dialogue at the outset of a design effort. Drawing on a case of "breaching experiments" in "non-places" we explore a "first approximation" of interventionist participation into the context of future interactive & responsive design interventions. By introducing a design journey, we have shed a light on how a human-centric approach, applied to the context of Human Building Interaction (HBI), can support an interventionist design dialogue between people and designed environment through processes of stirring up what's beyond 'norms' of interaction.

  • 227.
    Alima, Luc Onana
    et al.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Ghodsi, Ali
    RISE - Research Institutes of Sweden, ICT, SICS.
    Haridi, Seif
    RISE - Research Institutes of Sweden, ICT, SICS.
    A Framework for Structured Peer-to-Peer Overlay Networks2004Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Structured peer-to-peer overlay networks have recently emerged as good candidate infrastructure for building novel large-scale and robust Internet applications in which participating peers share computing resources as equals. In the past three year, various structured peer-to-peer overlay networks have been proposed, and probably more are to come. We present a framework for understanding, analyzing and designing structured peer-to-peer overlay networks. The main objective of the paper is to provide practical guidelines for the design of structured overlay networks by identifying a fundamental element in the construction of overlay networks: the embedding of k-ary trees. Then, a number of effective techniques for maintaining these overlay networks are discussed. The proposed framework has been effective in the development of the DKS system.

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  • 228. Alima, Luc Onana
    et al.
    Haridi, Seif
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Van Roy, Peter
    NetProber: a component for enhancing efficiency of overlay networks in P2P systems2002Konferensbidrag (Refereegranskat)
  • 229.
    Alipour, Y.
    et al.
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Viklund, Peter
    RISE., Swerea, KIMAB.
    Henderson, P.
    Vattenfall, Sweden.
    The analysis of furnace wall deposits in a low-NOx waste wood-fired bubbling fluidised bed boiler2012Ingår i: VGB PowerTech, ISSN 1435-3199, Vol. 92, nr 12, s. 96-100Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Increasing use is being made of biomass as fuel for electricity production as the price of natural wood continues to rise. Therefore, more use is being made of waste wood (recycled wood). However, waste wood contains more chlorine, zinc and lead, which are believed to increase corrosion rates. Corrosion problems have occurred on the furnace walls of a fluidised bed boiler firing 100 % waste wood under low-NOx conditions. The deposits have been collected and analysed in order to understand the impact of the fuel.

  • 230.
    Alirezaie, Marjan
    et al.
    Örebro University, Sweden.
    Hammar, Karl
    RISE - Research Institutes of Sweden, ICT, SICS. Jönköping University, Sweden.
    Blomqvist, Eva
    RISE - Research Institutes of Sweden, ICT, SICS.
    SmartEnv as a network of ontology patterns2018Ingår i: Semantic Web, ISSN 1570-0844, E-ISSN 2210-4968, Vol. 9, nr 6, s. 903-918Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this article we outline the details of an ontology, called SmartEnv, proposed as a representational model to assist the development process of smart (i.e., sensorized) environments. The SmartEnv ontology is described in terms of its modules representing different aspects including physical and conceptual aspects of a smart environment. We propose the use of the Ontology Design Pattern (ODP) paradigm in order to modularize our proposed solution, while at the same time avoiding strong dependencies between the modules in order to manage the representational complexity of the ontology. The ODP paradigm and related methodologies enable incremental construction of ontologies by first creating and then linking small modules. Most modules (patterns) of the SmartEnv ontology are inspired by, and aligned with, the Semantic Sensor Network (SSN) ontology, however with extra interlinks to provide further precision and cover more representational aspects. The result is a network of 8 ontology patterns together forming a generic representation for a smart environment. The patterns have been submitted to the ODP portal and are available on-line at stable URIs.

  • 231.
    Alirezaie, Marjan
    et al.
    Örebro University, Sweden .
    Hammar, Karl
    RISE - Research Institutes of Sweden, ICT, SICS. Jönköping University, Sweden.
    Blomqvist, Eva
    RISE - Research Institutes of Sweden, ICT, SICS.
    Nystrom, Mikael
    Linköping University, Sweden.
    Ivanova, Valentina
    RISE - Research Institutes of Sweden, ICT, SICS.
    SmartEnv ontology in E-care@home (Short paper)2018Ingår i: CEUR Workshop Proceedings, 2018, Vol. 2213, s. 72-79Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this position paper we briey introduce SmartEnv ontology which relies on SEmantic Sensor Network (SSN) ontology and is used to represent different aspects of smart and sensorized environments. We will also talk about E-carehome project aiming at providing an IoT-based health-care system for elderly people at their homes. Furthermore, we refer to the role of SmartEnv in Ecarehome and how it needs to be further extended to achieve semantic interoperability as one of the challenges in development of autonomous health care systems at home.

  • 232.
    Alirezaie, Marjan
    et al.
    Örebro University, Sweden.
    Renoux, Jennifer
    Örebro University, Sweden.
    Köckemann, Uwe
    Örebro University, Sweden.
    Kristoffersson, Annica
    Örebro University, Sweden.
    Karlsson, Lars
    Örebro University, Sweden.
    Blomqvist, Eva
    RISE - Research Institutes of Sweden, ICT, SICS.
    Tsiftes, Nicolas
    RISE - Research Institutes of Sweden, ICT, SICS.
    Voigt, Thiemo
    RISE - Research Institutes of Sweden, ICT, SICS.
    Loutfi, A
    Örebro University, Sweden.
    An ontology-based context-aware system for smart homes: E-care@home2017Ingår i: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 17, nr 7, artikel-id 1586Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Smart home environments have a significant potential to provide for long-term monitoring of users with special needs in order to promote the possibility to age at home. Such environments are typically equipped with a number of heterogeneous sensors that monitor both health and environmental parameters. This paper presents a framework called E-care@home, consisting of an IoT infrastructure, which provides information with an unambiguous, shared meaning across IoT devices, end-users, relatives, health and care professionals and organizations. We focus on integrating measurements gathered from heterogeneous sources by using ontologies in order to enable semantic interpretation of events and context awareness. Activities are deduced using an incremental answer set solver for stream reasoning. The paper demonstrates the proposed framework using an instantiation of a smart environment that is able to perform context recognition based on the activities and the events occurring in the home.

  • 233. Allahviranloo, Tofigh
    et al.
    Skuka, Arjan
    Tahvili, Sahar
    RISE., Swedish ICT, SICS.
    On the global solution of a fuzzy linear system2014Ingår i: Journal of Fuzzy Set Valued Analysis, ISPACS, Vol. 2014Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The global solution of a fuzzy linear system contains the crisp vector solution of a real linear system. So discussion about the global solution of a n × n fuzzy linear system Ax˜ = b˜ with a fuzzy number vector b in the right hand side and crisp a coefficient matrix A is considered. The advantage of the paper is developing a new algorithm to find the solution of such system by considering a global solution based upon the concept of a convex fuzzy numbers. At first the existence and uniqueness of the solution are introduced and then the related theorems and properties about the solution are proved in details. Finally the method is illustrated by solving some numerical examples. Keywords: Fuzzy linear system, Algebraic solution, Fuzzy number.

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  • 234. Allen, LT
    et al.
    Fox, EJP
    Blute, I
    YKI – Ytkemiska institutet.
    Kelly, ZD
    Rochev, Y
    Keenan, AK
    Dawson,
    Interaction of soft condensed materials with living cells: Phenotype/transcriptome correlations for the hydrophobic effect2003Ingår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 100, s. 6331-6336Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The assessment of biomaterial compatibility relies heavily on the analysis of macroscopic cellular responses to material interaction. However, new technologies have become available that permit a more profound understanding of the molecular basis of cell-biomaterial interaction. Here, both conventional phenotypic and contemporary transcriptomic (DNA microarray-based) analysis techniques were combined to examine the interaction of cells with a homologous series of copolymer films that subtly vary in terms of surface hydrophobicity. More specifically, we used differing combinations of N-isopropylacrylamide, which is presently used as an adaptive cell culture substrate, and the more hydrophobic, yet structurally similar, monomer N-tert-butylacrylamide. We show here that even discrete modifications with respect to the physiochemistry of soft amorphous materials can lead to significant impacts on the phenotype of interacting cells. Furthermore, we have elucidated putative links between phenotypic responses to cell-biomaterial interaction and global gene expression profile alterations. This case study indicates that high-throughput analysis of gene expression not only can greatly refine our knowledge of cell-biomaterial interaction, but also can yield novel biomarkers for potential use in biocompatibility assessment

  • 235.
    Allgardsson, Anders
    et al.
    FOI Swedish Defence Research Agency, Sweden.
    Berg, Lotta
    Umeå University, Sweden.
    Akfur, Christine
    FOI Swedish Defence Research Agency, Sweden.
    Hörnberg, Andreas
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Processum.
    Worek, Franz
    Bundeswehr Institute of Pharmacology and Toxicology, Germany.
    Linusson, Anna
    Umeå University, Sweden.
    Ekström, Fredrik J.
    FOI Swedish Defence Research Agency, Sweden.
    Structure of a prereaction complex between the nerve agent sarin, its biological target acetylcholinesterase, and the antidote HI-62016Ingår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 113, nr 20, s. 5514-5519Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Organophosphorus nerve agents interfere with cholinergic signaling by covalently binding to the active site of the enzyme acetylcholinesterase (AChE). This inhibition causes an accumulation of the neurotransmitter acetylcholine, potentially leading to overstimulation of the nervous system and death. Current treatments include the use of antidotes that promote the release of functional AChE by an unknown reactivation mechanism. We have used diffusion trap cryocrystallography and density functional theory (DFT) calculations to determine and analyze prereaction conformers of the nerve agent antidote HI-6 in complex with Mus musculus AChE covalently inhibited by the nerve agent sarin. These analyses reveal previously unknown conformations of the system and suggest that the cleavage of the covalent enzyme-sarin bond is preceded by a conformational change in the sarin adduct itself. Together with data from the reactivation kinetics, this alternate conformation suggests a key interaction between Glu202 and the O-isopropyl moiety of sarin. Moreover, solvent kinetic isotope effect experiments using deuterium oxide reveal that the reactivation mechanism features an isotope-sensitive step. These findings provide insights into the reactivation mechanism and provide a starting point for the development of improved antidotes. The work also illustrates how DFT calculations can guide the interpretation, analysis, and validation of crystallographic data for challenging reactive systems with complex conformational dynamics.

  • 236.
    Allsopp, Ben
    et al.
    Sheffield Hallam University, UK.
    Orman, Robin
    Johnson, Simon R.
    Baistow, Ian
    Lundstedt, Karin
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Sundberg, Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Baquedano-Peralvarez, Estela
    CSIC Spanish National Research Council, Spain.
    Stålhandske, Christina
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Andersson, Anne
    RISE., SP – Sveriges Tekniska Forskningsinstitut.
    Postigo, Pablo Aitor
    CSIC Spanish National Research Council, Spain.
    Booth, Jonathan
    Bingham, Paul A.
    Sheffield Hallam University, UK.
    Karlsson, Stefan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Towards ultra-thin glasses for solar energy applications2016Konferensbidrag (Övrigt vetenskapligt)
  • 237.
    Alm, Jonas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik, Säkerhet och Funktion.
    Tester och CE-märkning av personlig skyddsutrustning2015Ingår i: Nordisk Industri, nr 2, s. 29-Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 238.
    Al-Maqdasi, Zainab
    et al.
    Luleå University of Technology, Sweden.
    Gong, Guan
    RISE - Research Institutes of Sweden (2017-2019), Material och produktion, SICOMP.
    Nyström, Birgitha
    RISE - Research Institutes of Sweden (2017-2019).
    Joffe, Roberts
    RISE - Research Institutes of Sweden (2017-2019). Luleå University of Technology, Sweden.
    Wood fiber composites with added multifunctionality2018Ingår i: ECCM 2018 - 18th European Conference on Composite Materials, Applied Mechanics Laboratory , 2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    Graphene nanoplatelets (GNPs) are used to enhance the mechanical properties and functionality of wood plastic composite (WPC) targeting applications such as de-icing or anti-icing and fast thermal diffusivity. The GNPs are integrated into neat polymer using a masterbatch containing functionalized graphene by melt compounding through a twin-screw extruder without the use of any coupling agent or compatibilizer. The same manufacturing process (melt compounding) but with the use of compatibilizer is employed to produce WPC with nano-doped matrix. The effect of different GNP loadings (up to 15 wt.%) on morphology, crystallinity, mechanical and thermal conductivity of the nanocomposites and the WPCs was investigated. It was found that both strength and modulus of nanocomposites, in tension and bending, were increased with the addition of GNPs. With the aid of MAPE compatibilizer WPCs show higher flexural strength and modulus than neat polymer. GNP has marginal effect on the flexural stress but further increases flexural modulus of WPC. The preliminary results related to the thermal conductivity of studied materials indicate that the incorporation of GNP may be beneficial for faster and more uniform heat distribution in WPC. 

  • 239. Almberg, Wah-Sui
    et al.
    Boman, Magnus
    RISE., Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    An active agent portfolio algorithm2003Ingår i: Artificial intelligence and computer science, Nova publishers , 2003, 1, s. 123-134Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    An algorithm for managing a portfolio of stocks using a trading agent is presented. A simulation game inspired by history-based Parrondo games is described. A performance measure is defined, with which various strategy mixes can be judged. Even when transaction costs are taken into account, active portfolio management (as opposed to Buy and Hold) is shown to be profitable.

  • 240. Almeida, A F L
    et al.
    Fechine, P B A
    Sasaki, J M
    Ayala, A P
    Goes, J C
    Pontes, D L
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Optical electrical properties of barium titanate hydroxyapatite composite screen-printed thick films2004Ingår i: Solid State Sciences, Vol. 6, nr 3, s. 267-78Artikel i tidskrift (Refereegranskat)
  • 241.
    Almeida, Cheila
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. University of Lisbon, Portugal.
    Altintzoglou, Themistoklis
    Norwegian Institute of Food, Fisheries and Aquaculture Research, Norway.
    Cabral, Henrique
    University of Lisbon, Portugal.
    Vaz, Sofia Guedes
    University of Lisbon, Portugal.
    Does seafood knowledge relate to more sustainable consumption?2015Ingår i: British Food Journal, ISSN 0007-070X, E-ISSN 1758-4108, Vol. 117, nr 2, s. 894-914Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose – Portugal is a country with one of the highest seafood consumption per capita in the world. The purpose of this paper is to understand the Portuguese knowledge and attitudes towards seafood and relate it to consumers’ environmental conscious. Design/methodology/approach – Using an internet-based survey the authors investigated the relation of socio-demographic variables to consumption frequency and how knowledge about seafood is associated with interest in different information when purchasing seafood products. Findings – Results demonstrate consumption of a high diversity of species. Tuna and cod are the top species related to convenience and food traditions. There is a preference to consume seafood mostly at home and prepared grilled. Differences between higher and lower knowledgeable consumers’ related to seafood, show that the first ones have a more diversified use of species and high prevalence of small pelagic fish. Research limitations/implications – The findings are influenced by the sample obtained, which overrepresents well-educated and higher income people. Moreover the self-reported consumption can be biased by individuals own perceptions and different seafood products. Better estimations of consumption frequency could result from asking more detailed information, as such as by species or meal occasions. Practical implications – Portuguese consumers have high knowledge about seafood but it is not necessarily related to sustainable choices. To help in sustainable seafood choices it might be more effective to promote existing habits based on Portuguese traditions that still are good alternatives for the marine environment. Originality/value – A higher consumer’s knowledge does not necessarily mean more sustainability

  • 242.
    Almeida, Cheila
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. University of Lisbon, Portugal; New University of Lisbon, Portugal.
    Karadzic, Vanja
    New University of Lisbon, Portugal.
    Vaz, Sofia
    New University of Lisbon, Portugal.
    The seafood market in Portugal: Driving forces and consequences2015Ingår i: Marine Policy, ISSN 0308-597X, E-ISSN 1872-9460, Vol. 61, s. 87-94Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Portugal has the third highest seafood consumption per capita in the world and current patterns of seafood consumption are linked to how seafood products were embodied in the Portuguese society. The objective of this research is to understand Portuguese seafood consumption's main drivers and its consequences. For that official statistics were analyzed and a literature review on seafood consumption was undertaken. Portuguese seafood consumption is characterized by a wide diversity of species and preparing modes, when compared to other countries in Europe. Cod (salted and dried), does not exist in Portuguese waters but due to several factors, such as politics, religion and tradition, became the main species in Portuguese seafood consumption, representing around 38% of the national seafood demand. Five drivers are suggested to explain why Portuguese eat so much seafood: geography, marine resources, fisheries, social forces and politics; and consequences for the environment, economy and health are discussed. Hence while most dietary recommendations advise an increase in fish consumption is not applicable to Portugal and a more sustainable seafood consumption for the future is advocated.

  • 243.
    Almeida, Cheila
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Environment. New University of Lisbon, Portugal.
    Vaz, Sofia Guedes
    Portuguese Government, Portugal.
    Sevilla Ziegler, Friederike
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Environment.
    Environmental Life Cycle Assessment of a Canned Sardine Product from Portugal2015Ingår i: Journal of Industrial Ecology, ISSN 1088-1980, E-ISSN 1530-9290, Vol. 19, nr 4, s. 607-617Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study aims to assess the environmental impacts of canned sardines in olive oil, by considering fishing, processing, and packaging, using life cycle assessment (LCA) methodology. The case study concerns a product of a canning factory based in Portugal and packed in aluminum cans. It is the first LCA of a processed seafood product made with the traditional canning method. The production of both cans and olive oil are the most important process in the considered impact categories. The production of olives contributes to the high environmental load of olive oil, related to cultivation and harvesting phases. The production of aluminum cans is the most significant process for all impact categories, except ozone depletion potential and eutrophication potential, resulting from the high energy demand and the extraction of raw materials. To compare to other sardine products consumed in Portugal, such as frozen and fresh sardines, transport to the wholesaler and store was added. The environmental cost of canned sardines is almost seven times higher per kilogram of edible product. The main action to optimize the environmental performance of canned sardines is therefore to replace the packaging and diminish the olive oil losses as much as possible. Greenhouse gas emissions are reduced by half when plastic packaging is considered rather than aluminum. Frozen and fresh sardines represent much lower environmental impacts than canned sardines. Nevertheless, when other sardine products are not possible, it becomes feasible to use sardines for human consumption, preventing them from being wasted or used suboptimally as feed.

  • 244. Almgren, Jonas
    et al.
    Andersson, Stefan
    Carlsson, Mats
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Flood, Lena
    Haridi, Seif
    RISE., Swedish ICT, SICS, Computer Systems Laboratory.
    Frisk, Claes
    Nilsson, Hans
    Sundberg, Jan
    SICStus Prolog library manual, version 2.1 #81993Rapport (Övrigt vetenskapligt)
    Abstract [en]

    This Manual corresponds to SICStus Prolog release 2.1. #8 The Prolog library comprises a number of packages which are thought to be useful in a number of applications. Note that the predicates in the Prolog library are built-in predicates. One has to explicity load each package to get access to its predicates. To load a library package Package, you will normally enter a query. I ?- use_module(library(Package)). Library packages may be compiled and consulted as well as loaded.

  • 245.
    Almgren, Jonas
    et al.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Andersson, Stefan
    RISE - Research Institutes of Sweden, ICT, SICS.
    Flood, Lena
    RISE - Research Institutes of Sweden, ICT, SICS.
    Frisk, Claes
    Nilsson, Hans
    Sundberg, Jan
    SICStus Prolog library manual1991Rapport (Övrigt vetenskapligt)
  • 246.
    Almgren, P
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, TräteknikCentrum , Trätek.
    Tvärkraftsbelastade spikar i ändträ provningsrapport1987Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Provningar för dimensionering av olika konstruktioner kräver tid och omtanke. I dagens byggnorm, SBN 1980, finns inga angivna tillåtna värden för spikar i ändträ, varken när det gäller utdragskraft eller tvärkraft. I praktiken utnyttjas ofta spikar i ändträ för att ta upp tvärkraften. Man vet av erfarenhet att det ger en avsevärd hållfasthet åt förbanden. Ingen riktig dokumentation av hur stor hållkraften är har dock funnits. En inledande studie har nu gjorts av spikars hållkraft i ändträ. Det karakteristiska värdet (ett av hållfasthetsspridningen påverkat fraktilvärde, lägre än medelvärdet) för spik i ändträ visade sig kunna sättas till ca 60 % av motsvarande värde för spik slagen vinkelrätt fibrerna. Värdet kan dock inte anges utan förbehåll innan ytterligare studier gjorts och regler för hur provningen skall utföras utarbetats.

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  • 247.
    Almhöjd, Ulrika S.
    et al.
    Sahlgrenska Academy, Sweden.
    Lingström, Peter
    Sahlgrenska Academy, Sweden.
    Nilsson, Åke
    Sahlgrenska Academy, Sweden.
    Noren, Jörgen G.
    Sahlgrenska Academy, Sweden.
    Siljeström, Silje
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    ֖stlund, Å.
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Bernin, D.
    University of Gothenburg, Sweden.
    Molecular Insights into Covalently Stained Carious Dentine Using Solid-State NMR and ToF-SIMS2017Ingår i: Caries Research, ISSN 0008-6568, E-ISSN 1421-976X, Vol. 51, nr 3, s. 255-263Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Dyes currently used to stain carious dentine have a limited capacity to discriminate normal dentine from carious dentine, which may result in overexcavation. Consequently, finding a selective dye is still a challenge. However, there is evidence that hydrazine-based dyes, via covalent bonds to functional groups, bind specifically to carious dentine. The aim of this study was to investigate the possible formation of covalent bonds between carious dentine and 15N2-hydrazine and the hydrazine-based dye, 15N2-labelled Lucifer Yellow, respectively. Powdered dentine from extracted carious and normal teeth was exposed to the dyes, and the staining reactions were analysed using time-of-flight secondary ion mass spectrometry (ToF-SIMS), solid-state 13C-labelled nuclear magnetic resonance (NMR) and 15N-NMR spectroscopy. The results showed that 15N2-hydrazine and 15N2-labelled Lucifer Yellow both bind to carious dentine but not to normal dentine. It can thus be concluded that hydrazine-based dyes can be used to stain carious dentine and leave normal dentine unstained.

  • 248.
    Almquist, Per
    et al.
    RISE, Swedish ICT, SICS. IAM.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS. IAM.
    Experiments to investigate the utility of nearest neighbour metrics based on linguistically informed features for detecting textual plagiarism2011Konferensbidrag (Refereegranskat)
    Abstract [en]

    Plagiarism detection is a challenge for linguistic models — most current implemented models use simple occurrence statistics for linguistic items. In this paper we report two experiments related to plagiarism detection where we use a model for distributional semantics and of sentence stylistics to compare sentence by sentence the likelihood of a text being partly plagiarised. The result of the comparison are displayed for visual inspection by a plagiarism assessor.

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    fulltext
  • 249. Almstrand, A-C
    et al.
    Ljungström, E
    Lausmaa, J
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, YKI – Ytkemiska institutet.
    Bake, B
    Sjövall, Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, YKI – Ytkemiska institutet.
    Olin, A-C
    Airway Monitoring by Collection and Mass Specrometric Analysis of Exhaled Particles2009Ingår i: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 81, nr 2, s. 662-668Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We describe a new method for simultaneously collecting particles in exhaled air for subsequent chemical analysis and measuring their size distribution. After forced exhalation, particles were counted and collected in spots on silicon wafers with a cascade impactor. Several phospholipids were identified by time-of-flight secondary ion mass spectrometric analysis of the collected spots, suggesting that the particles originated from the lower airways. The amount of particles collected in ten exhalations was sufficient for characterizing the phospholipid composition. The feasibility of the technique in respiratory research is demonstrated by analysis of the phospholipid composition of exhaled particles from healthy controls, patients with asthma, and patients with cystic fibrosis. We believe this technology will be useful for monitoring patients with respiratory disease and has a high potential to detect new biomarkers in exhaled air.

  • 250.
    Alonso, Juan
    et al.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Abrahamsson, Henrik
    RISE., Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Ahlgren, Bengt
    RISE., Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Andersson, Anders
    RISE - Research Institutes of Sweden, ICT, SICS.
    Kreuger, Per
    RISE., Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Objective Functions for Balance in Traffic Engineering2002Rapport (Övrigt vetenskapligt)
    Abstract [en]

    We prove a result concerning objective functions that can be used to obtain efficient and balanced solutions to the multi-commodity network flow problem. This type of solution is of interest when routing traffic in the Internet. A particular case of the result proved here (see Corollary 2 below) was stated without proof in a previous paper.

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    FULLTEXT01
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