Ändra sökning
Avgränsa sökresultatet
2345678 201 - 250 av 889
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Träffar per sida
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
Markera
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 201. Fabrega, JM
    et al.
    Schrenk, B
    Bonada, F
    Lazaro, JA
    Forzati, M
    RISE., Swedish ICT, Acreo.
    Rigole, P-J
    Prat, J
    Modulated Grating Y-Structure Tunable Laser for ?-Routed Networks Optical Access2011Ingår i: IEEE Journal of Selected Topics in Quantum Electronics, Vol. 17, nr 6, s. 1552-Artikel i tidskrift (Refereegranskat)
  • 202.
    Fanjoux, G.
    et al.
    CNRS Université de Franche-Comté, France.
    Sudirman, A.
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Beugnot, J.-C.
    CNRS Université de Franche-Comté, France.
    Furfaro, L.
    CNRS Université de Franche-Comté, France.
    Margulis, W.
    RISE., Swedish ICT, Acreo.
    Sylvestre, T.
    CNRS Université de Franche-Comté, France.
    Stimulated Raman-Kerr scattering in an integrated nonlinear optofluidic fiber arrangement2014Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 39, nr 18, s. 5407-5410Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We describe a novel optofluidic fiber arrangement that allows for nonlinear effects enhancement between fluids and laser light while suppressing the generation of cavitation bubbles. By filling this optofluidic system with toluene and pumping it with a nanosecond microchip laser, we demonstrate the efficient generation of a broadband Raman frequency comb spanning from 532 to more than 1000 nm. It is further shown that the Raman frequency comb dramatically broadens toward broadband continuum light due to the stimulated Raman-Kerr scattering.

  • 203.
    Fanjoux, Gil
    et al.
    FEMTO-ST Institute, France.
    Sudirman, Aziza
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Beugnot, Jean-Charles
    FEMTO-ST Institute, France.
    Furfaro, Luca
    FEMTO-ST Institute, France.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Sylvestre, Thibaut
    FEMTO-ST Institute, France.
    Towards supercontinuum generation by stimulated Raman-Kerr scattering in an integrated nonlinear liquid core fiber2015Ingår i: The European Conference on Lasers and Electro-Optics 2015, Optical Society of America (OSA) , 2015, artikel-id CD_6_3Konferensbidrag (Refereegranskat)
    Abstract [en]

    Integrated liquid-core optical fibers (LCOF) have recently emerged as new photonic platforms for their wide range of potential applications in nonlinear photonics [1,2]. Their advantages over solid-core glass fibers include broad transparency from the UV to the mid-IR and enhanced nonlinear optical effects. For instance, enhanced stimulated Raman scattering (SRS) has recently been demonstrated using carbon disulfide, Toluene or ethanol nonlinear liquids in integrated all-fiber systems compatible with standard single-mode fibers (SMFs) [1,2].

  • 204. Ferguson, RM
    et al.
    Khandhar, A
    Jonasson, C
    Blomgren, J
    RISE., Swedish ICT, Acreo.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Krishnan, KM
    Size-Dependent Relaxation Properties of Monodisperse Magnetite Nanoparticles Measured Over Seven Decades of Frequency by AC Susceptometry2013Ingår i: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 49, s. 3441-3444Artikel i tidskrift (Refereegranskat)
  • 205. Fernandez Fernandez, A
    et al.
    Brichard, B
    Berghmans, F
    El Rabii, H
    Fokine, M
    Popov, M
    RISE., Swedish ICT, Acreo.
    Chemical Composition Fiber Gratings in a High Mixed Gamma Neutron Radiation Field2006Ingår i: IEEE Transactions on Nuclear Scienc, Vol. 53, nr 3, s. 1607-13Artikel i tidskrift (Refereegranskat)
  • 206.
    Fiorani, Matteo
    et al.
    KTH Royal Institute of Technology, Sweden.
    Skubic, Björn
    Ericsson Research, Sweden.
    Mårtensson, Jonas
    RISE., Swedish ICT, Acreo.
    Valcarenghi, Luca
    Sant'Anna School of Advanced Studies, Italy.
    Castoldi, Piero
    Sant'Anna School of Advanced Studies, Italy.
    Wosinska, Lena
    KTH Royal Institute of Technology, Sweden.
    Monti, Paolo
    KTH Royal Institute of Technology, Sweden.
    On the design of 5G transport networks2015Ingår i: Photonic network communications, ISSN 1387-974X, E-ISSN 1572-8188, Vol. 30, nr 3, s. 403-415Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Future 5G systems will pave the way to a completely new societal paradigm where access to information will be available anywhere, anytime, and to anyone or anything. Most of the ongoing research and debate around 5G systems are focusing on the radio network segment (e.g., how to offer high peak-rates per subscriber, and how to handle a very large number of simultaneously connected devices without compromising on coverage, outage probability, and latency). On the other hand, understanding the impact that 5G systems will have on the transport network (i.e., the segment in charge of the backhaul of radio base stations and/or the fronthaul of remote radio units) is also very important. This paper provides an analysis of the key architectural challenges for the design of a flexible 5G transport infrastructure able to adapt in a cost-efficient way to the plethora of requirements coming from the large number of envisioned future 5G services.

  • 207.
    Fiorani, Matteo
    et al.
    KTH Royal Institute of Technology, Sweden.
    Tombaz, Sibel
    Ericsson Research, Sweden.
    Mårtensson, Jonas
    RISE., Swedish ICT, Acreo.
    Skubic, Björn
    Ericsson Research, Sweden.
    Wosinska, Lena
    KTH Royal Institute of Technology, Sweden.
    Monti, Paolo
    KTH Royal Institute of Technology, Sweden.
    Energy performance of C-RAN with 5G-NX radio networks and optical transport2016Ingår i: 2016 IEEE International Conference on Communications (ICC), 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    Each mobile network architecture able to meet the traffic requirements of future 5G services comes with its own set of benefits vs. requirements for the radio and the transport segments. This paper focuses on the energy performance of four mobile network architectures, each one with different splitting options for the baseband processing functions. The radio segment under exam is based on a new radio access technology referred to as 5G-NX, while the transport segment is based on wavelength division multiplexing (WDM). The energy consumption of each mobile network architecture is weighted against (i) the benefits for the radio segment as a function of the level of centralization of the baseband processing resources and (ii) the required transport capacity and consequently the power consumption levels needed to accommodate the backhaul, midhaul, and/or fronthaul traffic generated at each base station. Our results show that a fully centralized radio access network (C-RAN) with centralization of all the baseband functions is not a practical approach for 5G mobile networks, while a partially centralized C-RAN architecture in which the physical layer baseband processing is performed at the base station site represents a promising solution.

  • 208.
    Fiorani, Matteo
    et al.
    KTH Royal Institute of Technology, Sweden.
    Tombaz, Sibel
    Ericsson Research, Sweden.
    Mårtensson, Jonas
    RISE., Swedish ICT, Acreo.
    Skubic, Björn
    Ericsson Research, Swede.
    Wosinska, Lena
    KTH Royal Institute of Technology, Sweden.
    Monti, Paolo
    KTH Royal Institute of Technology, Sweden.
    Modeling energy performance of C-RAN with optical transport in 5G network scenarios2016Ingår i: Journal of Optical Communications and Networking, ISSN 1943-0620, E-ISSN 1943-0639, Vol. 8, nr 11, s. B21-B34Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The deployment of new 5G wireless interfaces based on massive multiantenna transmission and beamforming is expected to have a significant impact on the complexity and power consumption of the transport network. This paper analyzes the energy performance of four radio access network (RAN) architectures, each one utilizing a different option for splitting the baseband processing functions. The radio segment is based on Long-Term Evolution (LTE) and 5G radio access technologies. The transport segment is based on optical wavelength division multiplexing, where coherent and direct detection transmissions are considered. The energy consumption of each RAN architecture is weighted against i) the benefits for the radio segment as a function of the level of centralization of the baseband processing functions and ii) the power consumption levels needed to accommodate the capacity generated at each base station. Results show that, with LTE radio interfaces, the energy consumption of the transport network amounts to only a few percent of the overall network power consumption. As a result, fully centralized LTE radio architectures are a viable option, with energy savings of at least 27% compared with conventional distributed architectures. On the other hand, with advanced 5G radio interfaces, centralized architectures, if not carefully designed, might become impractical due to the excessive energy consumption of the transport network (i.e., as a result of the huge capacity to be accommodated). This aspect can be mitigated via a careful joint design of the radio and the transport network (i.e., leveraging on appropriate optical transmission techniques and compromising where needed on the radio network performance).

  • 209. Fiorarli, M.
    et al.
    Monti, P.
    Skubic, B.
    Martensson, J.
    RISE., Swedish ICT, Acreo.
    Valcarenghi, L.
    Castoldi, P.
    Wosinska, L.
    Challenges for 5G transport networks2014Ingår i: 2014 IEEE International Conference on Advanced Networks and Telecommunication Systems, ANTS 2014, 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    5G mobile communications is seen as the enabler for the networked society where connectivity will be available anywhere and anytime to anyone and anything. The details of 5G are the subject to ongoing research and debate, mostly focused on understanding radio technologies that can enable the 5G vision. So far, less work has been dedicated to the challenges that 5G will pose to the transport network. This paper provides a first analysis of the key challenges to 5G transport in terms of capacity, flexibility and costs, for example. Different use cases are discussed as well as technology options and control plane concepts.

  • 210.
    Fock, Jeppe
    et al.
    DTU Technical University of Denmark, Denmark .
    Jonasson, Christian
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Johansson, Christer
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Hansen, Mikkel F.
    DTU Technical University of Denmark, Denmark .
    Characterization of fine particles using optomagnetic measurements2017Ingår i: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 19, nr 13, s. 8802-8814Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The remanent magnetic moment and the hydrodynamic size are important parameters for the synthesis and applications of magnetic nanoparticles (MNPs). We present the theoretical basis for the determination of the remanent magnetic moment and the hydrodynamic size of MNPs with a narrow size distribution using optomagnetic measurements. In these, the 2nd harmonic variation of the intensity of light transmitted through an MNP suspension is measured as a function of an applied axial oscillating magnetic field. We first show how the measurements of the optomagnetic signal magnitude at a low frequency vs. magnetic field amplitude can be used to determine the MNP moment. Subsequently, we use linear response theory to describe the dynamic non-equilibrium response of the MNP suspension at low magnetic field amplitudes and derive a link between optomagnetic measurements and magnetic AC susceptibility measurements. We demonstrate the presented methodology on two samples of commercially available multi-core MNPs. The results compare well with those obtained by dynamic light scattering, AC susceptibility and vibrating sample magnetometry measurements on the same samples when the different weighting of the particle size in the techniques is taken into account. The optomagnetic technique is simple, fast and does not require prior knowledge of the concentration of MNPs and it thus has the potential to be used as a routine tool for quality control of MNPs.

  • 211.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Formation of thermally stable chemical composition gratings in optical fiber2002Ingår i: Journal of the Optical Society of America B (Optical Physics, Vol. 19, s. 1759-Artikel i tidskrift (Refereegranskat)
  • 212.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Growth dynamics of chemical composition gratings in optical fiber2002Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 27, s. 1974-76Artikel i tidskrift (Refereegranskat)
  • 213.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    High temperature miniature oven with low thermal gradient for processing fiber Bragg gratings2001Ingår i: Review of Scientific Instrument, Vol. 72, nr 8, s. 3458-Artikel i tidskrift (Refereegranskat)
  • 214.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Laser induced sub-micron changes of the chemical composition of SiO2-based optical fibers2003Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    A method to create sub-micron changes of the chemical composition of silica based optical fibers is reviewed. The method is used to create thermally stable refractive index structures, Fiber Bragg gratings, which can be used e.g. as sensors operating at very high temperatures. The method is based on UV induced chemical reactions of the silica glass with in-diffused molecular hydrogen. A change in the chemical composition is attained after thermal treatment, and the mechanism is attributed to diffusion of hydrogen compounds within the glass.

  • 215.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Thermal stability of chemical composition gratings in optical fiber2002Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 27, s. 1016-18Artikel i tidskrift (Refereegranskat)
  • 216.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Thermal stability of oxygen-modulated gratings in standard telecommunication fiber2004Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 29, nr 11, s. 1185-87Artikel i tidskrift (Refereegranskat)
  • 217.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Underlying mechanisms, applications, limitations of chemical composition gratings in silica based fibers2004Ingår i: Journal of Non-Crystalline Solids, Vol. 349, s. 98-104Artikel i tidskrift (Refereegranskat)
  • 218. Fokine, M
    et al.
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Large increase in photosensitivity through massive hydroxyl formation2000Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 25, nr 5, s. 302-Artikel i tidskrift (Refereegranskat)
  • 219.
    Fokine, M
    et al.
    RISE., Swedish ICT, Acreo.
    Nilsson, LE
    Claesson, Å
    RISE., Swedish ICT, Acreo.
    Berlemont, D
    Kjellberg, L
    Krummenacher, L
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Integrated fiber Mach Zehnder interferometer for electro-optic switching2002Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 27, nr 18, s. 1643-45Artikel i tidskrift (Refereegranskat)
  • 220. Fonnum, G
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Molteberg, A
    Aksnes, E
    Characterization of Dynabeads® by magnetization measurements Mössbauer spectroscopy2005Ingår i: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 293, s. 41-47Artikel i tidskrift (Refereegranskat)
  • 221.
    Foote, P
    et al.
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Breidne, M
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Levin, K
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Papadopolous, P
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Read, I
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Signorazzi, M
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Nilsson, L-E
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Stubbe, R
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Claesson, Å
    RISE., Swedish ICT, Acreo, Fiber Optics.
    Operational load monitoring using optical fibre sensors2004Ingår i: Health monitoring of aerospace structures: Smart sensor technologies and signal processing / [ed] Staszewski, W., Boller, C., and Tomlinson, G., West Sussex, England: John Wiley & Sons, 2004Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 222. Fornara, A
    et al.
    Johansson, P
    RISE., Swedish ICT, Acreo.
    Petersson, K
    Gustafsson, S
    Qin, J
    Olsson, E
    Ilver, Dag
    RISE., Swedish ICT, Acreo.
    Krozer, A
    RISE., Swedish ICT, Acreo.
    Muhammed, M
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Tailored Magnetic Nanoparticles for Direct Sensitive Detection of Biomolecules in Biological Samples2008Ingår i: Nano Letters, Vol. 8, nr 10, s. 3423-28Artikel i tidskrift (Refereegranskat)
  • 223.
    Forsstrom, Stefan
    et al.
    Mid Sweden University, Sweden.
    Jennehag, Ulf
    Mid Sweden University, Sweden.
    Osterberg, Patrik
    Mid Sweden University, Sweden.
    Kardeby, Victor
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Lindqvist, Jonas
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Surveying and identifying the communication platforms of the internet of things2018Ingår i: 2018 Global Internet of Things Summit, GIoTS 2018, 2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    Research and industry invest time and resources in producing Internet of Things-based services, and the concept of Internet of Things platforms is climbing in the hype cycle for emerging technologies. Consequently, there is a vast number of enabling technologies, making it difficult to find the most suitable platform. The aim and goal of this article is to list and identify the currently available communication platforms for the Internet of Things. In this workwe surveyed the area and found over 128 different platforms for communication of data between things and services, out of which 42 fulfilled our listed basic requirements for being an IoT communication platform.

  • 224.
    Fortes Brollo, Maria Eugenia
    et al.
    CSIC Institute of Material Science of Madrid, Spain.
    Hernández Flores, Patricia
    CSIC Centro Nacional de Biotecnología, Spain.
    Gutiérrez, Lucía
    INA Instituto Universitario de Nanociencia de Aragón, Spain.
    Johansson, Christer
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Barber, Domingo Francisco
    CSIC Centro Nacional de Biotecnología, Spain.
    Morales, María Del Puerto
    CSIC Institute of Material Science of Madrid, Spain.
    Magnetic properties of nanoparticles as a function of their spatial distribution on liposomes and cells2018Ingår i: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 20, nr 26, s. 17829-17838Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The aggregation processes of magnetic nanoparticles in biosystems are analysed by comparing the magnetic properties of three systems with different spatial distributions of the nanoparticles. The first one is iron oxide nanoparticles (NPs) of 14 nm synthesized by coprecipitation with two coatings, (3-aminopropyl)trimethoxysilane (APS) and dimercaptosuccinic acid (DMSA). The second one is liposomes with encapsulated nanoparticles, which have different configurations depending on the NP coating (NPs attached to the liposome surface or encapsulated in its aqueous volume). The last system consists of two cell lines (Pan02 and Jurkat) incubated with the NPs. Dynamic magnetic behaviour (AC) was analysed in liquid samples, maintaining their colloidal properties, while quasi-static (DC) magnetic measurements were performed on lyophilised samples. AC measurements provide a direct method for determining the effect of the environment on the magnetization relaxation of nanoparticles. Thus, the imaginary (χ'') component shifts to lower frequencies as the aggregation state increases from free nanoparticles to those attached or embedded into liposomes in cell culture media and more pronounced when internalized by the cells. DC magnetization curves show no degradation of the NPs after interaction with biosystems in the analysed timescale. However, the blocking temperature is shifted to higher temperatures for the nanoparticles in contact with the cells, regardless of the location, the incubation time, the cell line and the nanoparticle coating, supporting AC susceptibility data. These results indicate that the simple fact of being in contact with the cells makes the nanoparticles aggregate in a non-controlled way, which is not the same kind of aggregation caused by the contact with the cell medium nor inside liposomes.

  • 225.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    IFWM Suppression Using APRZ with Optimized Phase-Modulation Parameters2004Ingår i: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 16, s. 2368-70Artikel i tidskrift (Refereegranskat)
  • 226.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Berntson, A
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Mårtensson, J
    RISE., Swedish ICT, Viktoria.
    Polarisation Modulation Scheme for intra-channel non-linear suppression2007Patent (Övrig (populärvetenskap, debatt, mm))
  • 227.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Davies, RJ
    Performance Analysis of Single-MZM APRZ Transmitters2006Ingår i: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 24, s. 2006-14Artikel i tidskrift (Refereegranskat)
  • 228.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Djupsjöbacka, A
    RISE., Swedish ICT, Acreo.
    Asynchronous Phase Modulation for the Suppression of IFWM2007Ingår i: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 25, s. 2969-75Artikel i tidskrift (Refereegranskat)
  • 229.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Djupsjöbacka, A
    RISE., Swedish ICT, Acreo.
    Li, J
    RISE., Swedish ICT, Acreo.
    Melin, S
    40 Gbit/s field experiment over 820 km transmission link designed for 10 Gbit/s using APRZ modulation format2006Ingår i: Electronics Letters, ISSN 0013-5194, E-ISSN 1350-911X, Vol. 42, s. 991-92Artikel i tidskrift (Refereegranskat)
  • 230.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Pincemin, E
    Gavignet, P
    Transmission of 16x40 Gb/s NRZ-OOK Channels Over 2800 km SSMF Using Asynchronous Phase Modulation2009Ingår i: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 21, s. 131-33Artikel i tidskrift (Refereegranskat)
  • 231.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Iyer, S
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Experimental study of single-MZM APRZ transmitters for fibre-optic communications2008Ingår i: Electronics Letters, ISSN 0013-5194, E-ISSN 1350-911X, Vol. 44, s. 148-49Artikel i tidskrift (Refereegranskat)
  • 232.
    Forzati, M
    et al.
    VIKTORIA.
    Mattson, C
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Stokab – en samhällsekonomisk analys (sammanfattning)2013Rapport (Övrigt vetenskapligt)
  • 233.
    Forzati, M
    et al.
    VIKTORIA.
    Mattson, C
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Corbet, M
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Cullen, D
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Guide to High-Speed Broadband Investment2014Rapport (Övrigt vetenskapligt)
  • 234.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Mattsson, C
    RISE., Swedish ICT, Acreo.
    Effekter av digitala tjänster för äldrevård – en ekonomisk studie2014Bok (Övrigt vetenskapligt)
  • 235.
    Forzati, M
    et al.
    VIKTORIA.
    Mattsson, C
    VIKTORIA.
    Stokab, a socio-economic study (acr055698en): English translation of Acreo report: acr0556982013Rapport (Övrigt vetenskapligt)
    Abstract [en]

    For almost 20 years, the City of Stockholm, via Stokab, has strategically invested in the development of an open, operator-neutral fibre network for everyone. Many articles and reports have been written on this, but primarily from a journalistic perspective. However, no research studies were until now available on the economic effects which Stokab generates for Stockholm. Acreo Swedish ICT has therefore carried out a study. The study shows that these investments have achieved the desired effects on the city’s IT development and the establishment of IT-related activities, but also that they have generated significant economic benefits for society, enterprises and citizens.<br /> The final report ”Stokab, a socio-economic analysis” describes the Stokab model and its effects on the different stakeholders, analysing Stokab’s own economy, cost savings for the municipality and the county administration, as well as benefits for businesses and end users. Moreover, Stockholm is compared to Copenhagen, which has conditions similar to Stockholm, but where the municipality has not taken an active role in the city’s fibre network.<br /> The socio-economic return on Stokab investment in fibre infrastructure is estimated in this study to over 16 billion SEK, or €1.9 billion at the current exchange rate. This result is based on a few quantifiable effects alone and we expect the actual return to be considerably larger

  • 236.
    Forzati, M
    et al.
    RISE., Swedish ICT, Acreo.
    Mårtensson, J
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Djupsjöbacka, A
    RISE., Swedish ICT, Acreo.
    Johannisson, Pontus
    RISE., Swedish ICT, Acreo.
    Reduction of intra-channel four-wave mixing using the alternate-phase RZ modulation format2002Ingår i: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 14, nr 9Artikel i tidskrift (Refereegranskat)
  • 237.
    Forzati, Marco
    RISE., Swedish ICT, Acreo.
    Open FTTH networks and digital home-care services: Experiences from the Connected for Health Project2016Ingår i: 2016 18th International Conference on Transparent Optical Networks (ICTON), 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    FTTH networks based on Open Access have been very common in Finland and especially Sweden in the past 10 - 15 years. In such networks, an operator-neutral network provider (NP) offers competing service providers access to the end users under non-discriminatory conditions. Among the advertised benefits of open FTTH networks is the development of an open market for high-quality digital societal services, such as e-health and e-social care. During the past six months, the EU Connected for Health project has run three pilots in Finland and Sweden, in which digital home-care services have been tested in live networks by municipalities and home-care givers. The pilots allowed to assess the socio-economic impact of fibre-based digital home-care services, in terms of costs, savings, and quality-of-life impact. During this talk we will present the final results of the study.

  • 238.
    Forzati, Marco
    et al.
    RISE., Swedish ICT, Acreo.
    Mattson, Crister
    RISE., Swedish ICT, Acreo.
    Socio-economic return of FTTH investment in Sweden, a prestudy2014Rapport (Övrigt vetenskapligt)
    Abstract [en]

    There is a wide range of FTTH initiatives throughout Sweden, with investments made by both telecom operators and public actors. The benefits of the investments are often discussed, especially when the investment is made by municipalities or other public bodies. This preliminary study analyses the socio-economic impacts of the investment in FTTH. The goal of the study was: Is it possible to calculate how much a krona (SEK) invested in fibre will give back to society? The conclusion is that a more comprehensive statistical data and more calculations are needed to give an exact estimate. The study, however, provides an indication that 1 SEK invested over four years brings back a minimum of 1.5 SEK in five years time. The study estimates the need for investment to achieve 100% fibre penetration, identifies and quantifies a number of significant effects of fibre deployment, and then calculates the return on investment. We recommend a more extensive study, in which the proposed model is refined and expanded with more detailed and updated data. This pre-study was sponsored by the Swedish Government’s Broadband Council (Bredbandsforum).

  • 239.
    Forzati, Marco
    et al.
    RISE., Swedish ICT, Acreo.
    Mattsson, Christer
    RISE., Swedish ICT, Acreo.
    FTTH-enabled digital home care – A study of economic gains2014Ingår i: 2014 16th International Conference on Transparent Optical Networks (ICTON), 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    We analyse the extent of the annual net cost reductions stemming from the introduction of four FTTH- enabled digital services for home care, as recently introduced in the Swedish city of Västerås. In total, between 2014 and 2020, it is projected that Sweden could save up to between €3 and €6 billion if such services were massively deployed today. The cost reductions are analysed for three different types of municipality. The article also shows that there is a significant cost reductions potential for a less extensive (and more realistic) deployment scenario with only 10% of users using digital services.

  • 240.
    Forzati, Marco
    et al.
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Mattsson, Christer
    Socio-economics return of FTTH investment in Sweden, a prestudy: En förstudie åt Bredbandsforum2011Rapport (Övrigt vetenskapligt)
  • 241. Fossheim, S
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Fahlvik, AK
    Grace, D
    Klaveness, J
    Lanthanide-based susceptibility contrast agents : Assessment of the magnetic properties1996Ingår i: Magn. Reson. Med., Vol. 35, s. 201-Artikel i tidskrift (Refereegranskat)
  • 242.
    Fougstedt, Christoffer
    et al.
    Chalmers University of Technology, Sweden.
    Sheikh, Alireza
    Chalmers University of Technology, Sweden.
    Johannisson, Pontus
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Larsson-Edefors, Per
    Chalmers University of Technology, Sweden.
    Filter Implementation for Power-Efficient Chromatic Dispersion Compensation2018Ingår i: IEEE Photonics Journal, ISSN 1097-5764, E-ISSN 1943-0655, Vol. 10, nr 4, artikel-id 7202919Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Chromatic dispersion (CD) compensation in coherent fiber-optic systems represents a very significant DSP block in terms of power dissipation. Since spectrally efficient coherent systems are expected to find a wider deployment in systems shorter than long haul, it becomes relevant to investigate filter implementation aspects of CD compensation in the context of systems with low-to-moderate amounts of accumulated dispersion. The investigation we perform in this paper has an emphasis on implementation aspects such as power dissipation and area usage, it deals with both time-domain and frequency-domain CD compensations, and it considers both A/D-conversion quantization and fixed-point filter design aspects. To enable an accurate analysis on power dissipation and chip area, the evaluated filters are implemented in a 28-nm fully depleted silicon-on-insulator (FD-SOI) process technology. We show that an optimization of the filter response that takes pulse shaping into account can significantly reduce power dissipation and area usage of time-domain implementations, making them a viable alternative to frequency-domain implementations.

  • 243.
    Franciscangelis, C.
    et al.
    State University of Campinas, Brazil.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Floridia, C.
    CPqD, Brazil.
    Rosolem, J. B.
    CPqD, Brazil.
    Salgado, F. C.
    CPqD, Brazil.
    Nyman, T.
    Saab AB, Sweden.
    Petersson, M.
    Saab AB, Sweden.
    Hallander, P.
    Saab AB, Sweden.
    Hällstrom, S.
    KTH Royal Institute of Technology, Sweden.
    Söderquist, I.
    Saab AB, Sweden.
    Fruett, F.
    State University of Campinas, Brazil.
    Vibration measurement on composite material with embedded optical fiber based on phase-OTDR2017Ingår i: Proceedings of SPIE - The International Society for Optical Engineering Volume 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017; 101683Q (2017), 2017, artikel-id 101683QKonferensbidrag (Refereegranskat)
    Abstract [en]

    Distributed sensors based on phase-optical time-domain reflectometry (phase-OTDR) are suitable for aircraft health monitoring due to electromagnetic interference immunity, small dimensions, low weight and flexibility. These features allow the fiber embedment into aircraft structures in a nearly non-intrusive way to measure vibrations along its length. The capability of measuring vibrations on avionics structures is of interest for what concerns the study of material fatigue or the occurrence of undesirable phenomena like flutter. In this work, we employed the phase-OTDR technique to measure vibrations ranging from some dozens of Hz to kHz in two layers of composite material board with embedded polyimide coating 0.24 numerical aperture single-mode optical fiber. © 2017 SPIE.

  • 244.
    Franciscangelis, Carolina
    et al.
    University of Campinas, Brazil.
    Fruett, Fabiano
    University of Campinas, Brazil.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Kjellberg, Leif
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Floridia, Claudio
    CPqD, Brazil.
    Real-time multiple machines sound listening using a phase-OTDR based distributed microphone2017Ingår i: SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2017, 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    We propose and experimentally demonstrate a spatially tunable phase-OTDR based distributed microphone for listening to the sound of multiple machines. The distributed acoustic sensing capability, allied with the real-time spatial tuning, enables listening to a drill and to a cooling water system pump placed in two different sections along a single optical fiber, one at a time. The recorded acoustic waveform profile of both machines agreed with their operating cycles. Moreover, the sounds generated by both engines are successfully distinguished with the proposed method even when both machines are operating simultaneously..

  • 245. Franco, C S
    et al.
    Quintero, G A
    Myren, N
    Kudlinski, A
    Zeghlache, H
    Carvalho, H R
    Triques, A L C
    Gonzales, D M
    Gouvêa, P M P
    Martinelli, G
    Quiquempois, Y
    Lesche, B
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Carvalho, I C S
    Measurement of Depletion Region Width in Poled Silica2005Ingår i: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 42, nr 27, s. 5793-96Artikel i tidskrift (Refereegranskat)
  • 246.
    Fu, Ying
    et al.
    KTH Royal Institute of Technology, Sweden.
    Jussi, Johnny
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Elmlund, Louise
    Swedish National Forensic Centre, Sweden.
    Dunne, Simon
    Swedish National Forensic Centre, Sweden.
    Wang, Qin
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Brismar, Hjalmar
    KTH Royal Institute of Technology, Sweden.
    Intrinsic blinking characteristics of single colloidal CdSe-CdS/ZnS core-multishell quantum dots2019Ingår i: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 99, nr 3, artikel-id 035404Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Fluorescence blinking of single colloidal semiconductor quantum dots (QDs) has been extensively studied, and several sophisticated models have been proposed. In this work, we derive Heisenberg equations of motion to carefully study principal transition processes, i.e., photoexcitation, energy relaxation, impact ionization and Auger recombination, radiative and nonradiative recombinations, and tunneling between core states and surface states, of the electron-hole pair in single CdSe-CdS/ZnS core-multishell QDs and show that the on-state probability density distribution of the QD fluorescence obeys the random telegraph signal theory because of the random radiative recombination of the photoexcited electron-hole pair in the QD core, while the off-state probability density distribution obeys the inverse power law distribution due to the series of random walks of the photoexcited electron in the two-dimensional surface-state network after the electron tunnels from the QD core to the QD surface. These two different blinking characteristics of the single QD are resolved experimentally by properly adjusting the optical excitation power and the bin time.

  • 247.
    Fu, Ying
    et al.
    KTH Royal Institute of Technology, Sweden.
    Jussi, Johnny
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Wang, Qin
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Brismar, Hjalmar
    KTH Royal Institute of Technology, Sweden.
    Liu, Yushen
    College of Physics and Electronic Engineering, China.
    Yang, Xifeng
    College of Physics and Electronic Engineering, China.
    Chen, Yun
    University of Gothenburg, Sweden.
    Endocytic pathway of vascular cell adhesion molecule 1 in human umbilical vein endothelial cell identified in vitro by using functionalized nontoxic fluorescent quantum dots2019Ingår i: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 297, artikel-id 126702Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Studies about vascular cell adhesion molecule 1 (VCAM1) in tumor growth, metastasis, and angiogenesis suggest that targeting VCAM1 expression is an attractive strategy for diagnosis and anti-tumor therapy. However, the endocytic pathway of VCAM1 in vascular cells has not been well characterized. In this study we visualize the endocytic pathway of tumor necrosis factor α (TNFα) induced VCAM1 in human umbilical vein endothelial cell (HUVEC) in vitro using 5-carboxyfluorescein labeled VCAM1 binding peptides and fluorescent water-dispersible 3-mercaptopropionic acid (3MPA)-coated CdSe-CdS/Cd0.5Zn0.5S/ZnS core–multishell nontoxic quantum dots (3MPA-QDs) functionalized with VCAM1 binding peptides. Clear key in vitro observations are as follows: (a) 3MPA-QDs functionalized with VCAM1 binding peptides, denoted as VQDs, adhered and aggregated cumulatively to cell membrane around 2 h after VQD deposition to cell culture medium and were found in lysosomes in TNFα-treated HUVECs approximately 24 h after VQD deposition; (b) VQDs remained in TNFα-treated HUVECs for the whole 16 days of the experimental observation period; (c) quite differently, 3MPA-QDs were endocytosed then exocytosed by HUVECs via endosomes in about 24–48 h after 3MPA-QD deposition. Our study suggests that VCAM1 molecules, initially expressed on cell membrane induced by TNFα treatment, are internalized into lysosomes. This provides a novel means to deliver materials to lysosomes such as enzyme replacement therapy. Moreover, our meticulous sensing methodology of devising fluorescent nontoxic QDs advances biosensing technique for studying cellular activities in vitro and in vivo. © 2019 The Authors

  • 248.
    Gaiarin, Simone
    et al.
    DTU Technical University of Denmark, Denmark.
    Pang, Xiaodan
    RISE., Swedish ICT, Acreo.
    Ozolins, Oskars
    RISE., Swedish ICT, Acreo.
    Jones, Rasmus Thomas
    DTU Technical University of Denmark, Denmark.
    Da Silva, Edson Porto
    DTU Technical University of Denmark, Denmark.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Westergren, Urban
    KTH Royal Institute of Technology, Sweden.
    Popov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    RISE., Swedish ICT, Acreo.
    Zibar, Darko
    DTU Technical University of Denmark, Denmark.
    High speed PAM-8 optical interconnects with digital equalization based on neural network2016Ingår i: Asia Communications and Photonics Conference 2016, 2016, artikel-id AS1C.1Konferensbidrag (Refereegranskat)
    Abstract [en]

    We experimentally evaluate a high-speed optical interconnection link with neural network equalization. Enhanced equalization performances are shown comparing to standard linear FFE for an EML-based 32 GBd PAM-8 signal after 4-km SMF transmission.

  • 249.
    Gao, Shang
    et al.
    Paul Scherrer Institut, Switzerland; University of Geneva, Switzerland.
    Zaharko, Oksana
    Paul Scherrer Institut, Switzerland.
    Tsurkan, Vladimir
    University of Augsburg, Germany; Academy of Sciences of Moldova, Moldova.
    Prodan, Lilian
    Academy of Sciences of Moldova, Moldova.
    Riordan, Edvard
    Cardiff University, UK.
    Lago, Jorge
    University of the Basque Country, Spain.
    Fak, Björn
    Institut Laue-Langevin, France.
    Wildes, Andrew R.
    Institut Laue-Langevin, France.
    Koza, Marek M.
    Institut Laue-Langevin, France.
    Ritter, Clemens
    Institut Laue-Langevin, France.
    Fouquet, Peter
    Institut Laue-Langevin, France.
    Keller, Lukas
    Paul Scherrer Institut, Switzerland.
    Canevet, Emmanuel
    Paul Scherrer Institut, Switzerland; DTU Technical University of Denmark, Denmark.
    Medarde, Marisa
    Paul Scherrer Institut, Switzerland.
    Blomgren, Jakob
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Johansson, Christer
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Giblin, Sean R.
    Cardiff University, UK.
    Vrtnik, Stanislav
    Jozef Stefan Institute, Slovenia.
    Luzar, Jose
    Jozef Stefan Institute, Slovenia.
    Loidl, Alois
    University of Augsburg, Germany.
    Ruegg, Christina
    Paul Scherrer Institut, Switzerland; University of Geneva, Switzerland.
    Fennell, Tom
    Paul Scherrer Institut, Switzerland.
    Dipolar Spin Ice States with a Fast Monopole Hopping Rate in CdEr2X4 (X = Se, S)2018Ingår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 120, nr 13, artikel-id 130201Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Excitations in a spin ice behave as magnetic monopoles, and their population and mobility control the dynamics of a spin ice at low temperature. CdEr2Se4 is reported to have the Pauling entropy characteristic of a spin ice, but its dynamics are three orders of magnitude faster than the canonical spin ice Dy2Ti2O7. In this Letter we use diffuse neutron scattering to show that both CdEr2Se4 and CdEr2S4 support a dipolar spin ice state-the host phase for a Coulomb gas of emergent magnetic monopoles. These Coulomb gases have similar parameters to those in Dy2Ti2O7, i.e., dilute and uncorrelated, and so cannot provide three orders faster dynamics through a larger monopole population alone. We investigate the monopole dynamics using ac susceptometry and neutron spin echo spectroscopy, and verify the crystal electric field Hamiltonian of the Er3+ ions using inelastic neutron scattering. A quantitative calculation of the monopole hopping rate using our Coulomb gas and crystal electric field parameters shows that the fast dynamics in CdEr2X4 (X = Se, S) are primarily due to much faster monopole hopping. Our work suggests that CdEr2X4 offer the possibility to study alternative spin ice ground states and dynamics, with equilibration possible at much lower temperatures than the rare earth pyrochlore examples.

  • 250. Garcia, F C
    et al.
    Fokine, M
    RISE., Swedish ICT, Acreo.
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Kashyap, R
    Mach-Zehnder interferometer using single standard telecommunication optical fibre2001Ingår i: Electronics Letter, Vol. 37, nr 24, s. 1440-Artikel i tidskrift (Refereegranskat)
2345678 201 - 250 av 889
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.7