Endre søk
Begrens søket
1234567 1 - 50 of 401
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Ahlers, Franz Josef
    et al.
    PTB Physikalisch-Technische Bundesanstalt, Germany.
    Kuchera, Jan
    Cesky Metrologicky Institut, Czech Republic.
    Poirier, Wilfried
    Laboratoire National de Métrologie et d'Essais, France.
    Jeanneret, Blaise
    Cesky Metrologicky Institut, Czech Republic.
    Strapinski, Alexandre F.
    MIKES Mittatekniikan Keskus, Finland.
    Tzalenchuk, Alexander Ya
    NPL Management, United Kingdom.
    Vrabcek, Peter
    Slovensky Metrologicky Ustav, Slovakia.
    Bergsten, Tobias
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Hwang, Changyong
    Korea Research Institute of Standards and Science, South Korea.
    Yakimova, Rositza T.
    Linköping University, Sweden.
    Kubatkin, Sergey E.
    Chalmers University of Technology, Sweden.
    The EMRP project GraphOhm- Towards quantum resistance metrology based on graphene2014Inngår i: CPEM 2014, 2014, , s. 548 - 549s. 548-549, artikkel-id 6898502Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A new joint research project (JRP) integrating metrology institutes and universities from nine countries is aimed at realization of a new generation of standards for quantum resistance metrology. The project exploits graphene's properties to simplify operation of standards without compromising the unprecedented precision delivered by semiconductor quantum Hall devices. Higher operating temperatures (above 4.2 K, and up to 8 K) and together with lower magnetic fields (below 5 T, and potentially down to 2 T) will lead to a significantly improved and cost-saving dissemination of intrinsically referenced resistance standards to all end-users relying on electrical measurements.

  • 2.
    Ahlstedt, Mikael
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Time comparison and synchronisation over optical fibre2003Rapport (Fagfellevurdert)
  • 3.
    Aleite, Edgardo
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Gyllström, Joakim
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Mätning av intensitetsbrus i lasrar (RIN)2000Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 4.
    Andersson, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Bäst mäta utan fel2006Inngår i: Process Nordic, nr 11Artikkel i tidsskrift (Annet vitenskapelig)
  • 5.
    Andersson, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Dosin - A new Pump Device. Its Construction and Function.2007Inngår i: Uppsala Journal of Medical Science, Vol. 112, nr 1, s. 83-93Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    ABSTRACT The research and development of the Dosin® and the medical injection system in which it is used was initiated in response to a demand for a new and improved method of delivering fluids to patients. The key requirement was to make the use of refillable syringes obsolete in a cost- effective and user-friendly alternative. Most syringes, despite their accurate delivery quotas, have a limited volume that necessitates frequent monitoring and filling or changing. This very act is time consuming and potentially dangerous in inexperienced hands. The new principle of the device makes it capable of delivering (medical) fluids of various consistencies in extremely precise amounts regardless of the fluid viscosity. The outlet of the Dosin® goes through another innovation, the bubble detector, which detects any change in direction of a light beam that passes through the content of the outlet. Thus, should an air bubble enter the outflow and hence be about to enter the blood stream of a patient, the flow of fluid will halt immediately and an alarm will notify the user of the problem.The cyclic flow is useful in interventional radiology since it prevents clotting and increases the mixing with the blood. The flow rate varies from 0.03 mL/s to 5 mL/s and it is recommended to use fluid with a viscosity lower than 3 mPa.s. The outlet pressure is recommended below 300 mm Hg. The Dosin® must be replaced after each patient, alternatively after maximum 24h continuous use.

  • 6.
    Andersson, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Gastrointestinal Radiological Investigations with a New Pump Device: Experimental and Clinical Experiences2008Inngår i: Ups J Med Sci., Vol. 113, nr 1, s. 73-8Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    In an earlier paper (1) a new pump device for medical applications was described. This enabled a continuous flow of saline, barium contrast agent and gases. We now report further study of this device: The use of gases was experimentally studied to give a basis for use in CT-colonography. We also report experiences from injection of barium contrast agent via a naso-duodenal tube for radiological investigation of the small intestine in patients with gastrointestinal suffering. The radiation exposure to the x-ray staff was reduced. The investigation procedure was standardised and shortened.

  • 7.
    Andersson, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Inventory and basic evaluation of field calibration methods for volume and flow meters Nordtest 1590-022004Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 8.
    Andersson, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Viktigt att välja rätt FLÖDESMÄTARE2008Inngår i: Energi & miljö, nr 11, s. 90-Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 9.
    Andersson, Anders
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Holmsten, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Lau, Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    VVS 2000 Tabeller & Diagram2004Inngår i: Handbok i Mätteknik, 2004, s. 64-Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 10.
    Andersson, Anders
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Mattiasson, Kerstin
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Holmsten, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Lidbeck, Mats
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Jonasson, Viktoria
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Magnusson, Bertil
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Oorganisk kemi (Kmoo).
    Mätteknik för processindustrin2010Rapport (Fagfellevurdert)
    Abstract [sv]

    En lärobok (främst riktad till yrkeshögskolan) om hur man undviker mätfel, om olika mätprinciper och om hur mätutrustning av olika slag bäst används och monteras. Främst handlar det om temperatur, tryck, flöde och nivå men även annat som finns i en processindustri.

  • 11.
    Andersson, Anne
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    High Power Fibre Optic Calibration. Nordtest project 1654-032004Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 12.
    Andersson, Anne
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Källberg, Stefan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Intercomparison of transmittance measurements on V(λ) filter. EUROMET PROJECT 3532004Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 13.
    Andersson, Anne
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Svensson, Ingemar
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Camera-based Colour Contrast Evaluation2012Rapport (Fagfellevurdert)
    Abstract [en]

    This project studies whether or not a digital camera can be used to evaluate colour difference or colour contrast. When characterizing a test object that changes colour over time it is not always possible to do a normal colour measurement with a spectroradiometer. The alternative could be to use film or rapid fire photography to record the changes and extract the colour data from the digital information. This project involves development of a method where spectroradiometric data of a colour chart is compared to digital data taken from photos and film of the same colour chart using Photoshop. In each measurement 22 colours have been evaluated by calculating the colour difference between a direct spectroradiometric measurement of a single colour and data taken from Photoshop of that same colour. The data is compared in the CIELAB colour space using the ?E94 metric which should faithfully represent how the human eye perceives colour difference. Three sets of measurements are made .Two sets where the spectroradiometric data is compared to data from still photos, first with photos directly from the camera and then with RAW-data from the camera. The third measurement compared the spectroradiometric data with data from a frame from a video. The results show that the 22 colours are reproduced with varying degrees of accuracy in photos and video compared to a direct measurement using a spectroradiometer. For the two photo measurements the results span from ?E94 = 0.82 for the best colour reproduction to ?E94 = 17.01 for the worst reproduction. The average deviation was ?E94 = 7.48 and ?E94 = 8.46 respectively where a colour difference of ?E94 =1.0 is considered a just noticeable difference. For video the deviation spans from ?E94 = 4.89 to ?E94 = 18.11 with an average deviation of ?E94 = 11.59. ?E94 has also been used to evaluate how the colour contrast between two different colours differ between the spectroradiometric measurement and data from Photoshop. The results show that for photos the colour contrast deviates quite a bit between the two methods. A deeper evaluation of the video method shows that as long as the contrast between two colours is small the deviation compared to the spectroradiometric measurement will also be small.

    Fulltekst (pdf)
    FULLTEXT01
  • 14.
    Andersson, Bengt-Åke
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Klämberg, Patrik
    Bestämning av fotodetektor responsivitet i mikrovågsområdet.2001Rapport (Fagfellevurdert)
  • 15.
    Andersson, Håkan
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Akustik (Eta).
    Isaksson, Hans
    Werner, Gösta
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Larmanordningar på utryckningsfordon.1991Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 16.
    Andersson, Roland
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Kalibrering av fiberoptiska effektmetrar vid våglängderna 850 nm, 1300 nm och 1550 nm.1989Rapport (Fagfellevurdert)
  • 17. Andersson-Fäldt, A
    et al.
    Pendrill, L
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Molecular spectroscopy with vertical-cavity surface-emitting diode lasers1999Inngår i: Envirosense, Conference : Spectroscopic atmospheric environmental monitoring technique, 1999, , s. Paper 3821-21Konferansepaper (Annet vitenskapelig)
  • 18. Ankersson, Peter
    et al.
    Carlsson, Jan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    FDTD-simulation of the electrical environment for vehicles by using CAD-data compared to measurements2002Konferansepaper (Annet vitenskapelig)
  • 19.
    Appleby, Graham
    et al.
    NERC Space Geodesy Facility, United Kingdom.
    Behrend, Dirk
    NASA, USA.
    Bergstrand, Sten
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Donovan, Howard
    Honeywell Technology Solutions, USA.
    Emerson, Curtis
    NASA, USA.
    Esper, Jaime
    NASA, USA.
    Hase, Hayo
    AGGO, Germany.
    Long, Jim
    NASA, USA.
    Ma, Chopo
    NASA, USA.
    McCormick, David
    NASA, USA.
    Noll, Carey
    NASA, USA.
    Pavlis, Erricos C
    University of Maryland, USA.
    Ferrage, Pascal
    CNES, France.
    Pearlman, Michael
    Harvard-Smithsonian Center for Astrophysics, USA.
    Saunier, Jerome
    IGN Institut national de l'information géographique et forestiere, France.
    Stowers, David
    NASA, USA.
    Wetzel, Scott
    Honeywell Technology Solutions, USA.
    GGOS Requirements for Core Sites2015Rapport (Fagfellevurdert)
    Abstract [en]

    The Global Geodetic Observing System, an entity under the International Association of Geodesy (IAG) has undertaken the task of advocating for the geodetic infrastructure necessary to meet the global change and other societal challenges, and defining the requirements for the geodetic observatories that constitute it. In this role, GGOS will work with the IAG Measurement Services, the scientific Community, and national and international agencies to bring a combined effort to bear on these areas of international concern. A major task within this effort is the upgrading, expansion, and maintenance of the global ground network of co-located Core Sites for geodesy to enable the realization and maintenance of the International Terrestrial Reference Frame (ITRF), Earth orientation parameters and precision orbits to meet the needs of Earth orbiting missions, Earth Surface and interior programs, and deep space navigation. GGOS and the geodetic Core Sites should be compliant with the UN resolution from Feb 26, 2015. See http://www.unggrf.org/. This Site Requirements Document outlines what is needed for that compliance.

  • 20.
    Arnell, Hans
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Temperaturmätning med termistorer på passbitar.1997Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 21.
    Arrhén, Fredrik
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Step response of vacuum sensors - A preliminary study2012Inngår i: 20th IMEKO World Congress 2012, 2012, s. 1816-1818Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The development of a system for determining step response of total vacuum gauges is described as well as results for some typical vacuum gauges. The system is mainly suitable for steps from atmospheric pressure down to around 50 Pa. Step response times reached with the system are (with reasonable sizes of DUT internal volumes) about 20ms. 

  • 22.
    Arrhén, Fredrik
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Step response of vacuum sensors: A preliminary study2012Inngår i: 20th IMEKO World Congress 2012, 2012, Vol. 3, s. 1816-1818s. 1816-1818Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The development of a system for determining step response of total vacuum gauges is described as well as results for some typical vacuum gauges. The system is mainly suitable for steps from atmospheric pressure down to around 50 Pa. Step response times reached with the system are (with reasonable sizes of DUT internal volumes) about 20ms.

  • 23.
    Axelsson, Olle
    et al.
    Chalmers University of Technology, Sweden.
    Thorsell, Mattias
    Chalmers University of Technology, Sweden.
    Andersson, Kristoffer
    Chalmers University of Technology, Sweden.
    Stenarson, Jörgen
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Rolain, Yves J.
    Vrije Universiteit Brussel, Belgium.
    Noise temperature of an electronic tuner for noise parameter measurement systems2012Inngår i: 79th ARFTG Microwave Measurement Conference: Non-Linear Measurement Systems, ARFTG 2012, 2012, , s. 6291197artikkel-id 6291197Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper, the noise temperature of an electronic tuner is determined and its significance for the suitability of such tuners in noise parameter measurement systems discussed. The noise temperature of the tuner was found to be higher than the ambient room temperature in the laboratory and vary significantly between tuner states. For impedance states with small input reflections coefficients, the excess noise temperature is around 25 K. For some of the states with higher reflection coefficients, this figure increases, reaching around 45 K at |Γ| = 0.75. Unless accounted for, this leads to errors in noise parameter extraction when using an electronic tuner in noise parameter measurements.

  • 24.
    Bahmani, Amin
    et al.
    Chalmers University of Technology, Sweden.
    Thiringer, Torbjörn
    Chalmers University of Technology, Sweden.
    Kharezy, Mohammad
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Design Methodology and Optimization of a Medium Frequency Transformer for High Power DC-DC Applications2015Inngår i: Applied Power Electronics Conference APEC, 2015, , s. 8s. 2532-2539Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    The high power medium frequency transformer (HPMFT) is one of the key elements of an isolated, bi-directional DC-DC converters in applications such as future all-DC offshore wind farms, traction and solid state transformers. This paper describes a design methodology taking into account the loss calculation, isolation requirements and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a design example to find the highest power density while the efficiency, isolation, thermal and leakage inductance requirements are all met.

    Fulltekst (pdf)
    fulltext
  • 25.
    Bahmani, Amin
    et al.
    Chalmers University of Technology, Sweden.
    Thiringer, Torbjörn
    Chalmers University of Technology, Sweden.
    Kharezy, Mohammad
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Optimization and Experimental Validation of Medium-Frequency High Power Transformers in Solid-State Transformer Applications2016Inngår i: 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), 2016, , s. 8s. 3043-3050Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    High power isolated DC-DC converters are likely to provide solutions for many technical challenges associated with power density, efficiency and reliability in potential applications such as offshore wind farms, inter-connection of DC grids, MVDC in data centers and in future solid state transformer applications. The high power medium frequency transformer (HPMFT) is one of the key elements of such a converter to realize the voltage adaption, isolation requirements, as well as high power density. This paper describes a design and optimization methodology taking into account the loss calculation, isolation requirements and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a 50 kW, 1 / 3 kV, 5 kHz transformer to find the highest power density while the efficiency, isolation, thermal and leakage inductance requirements are all met. The optimized transformers are then manufactured and will be presented in this paper.

  • 26.
    Bahmani, Mohammad Amin
    et al.
    Chalmers University of Technology, Sweden.
    Thiringer, Torbjörn
    Chalmers University of Technology, Sweden.
    Kharezy, Mohammad
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Design methodology and optimization of a medium-frequency transformer for high-power DC-DC applications2016Inngår i: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 52, nr 5, s. 4225-4233, artikkel-id 7496932Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The medium-frequency power transformer (MFPT) is one of the key elements of an isolated bi-directional dc-dc converters in applications such as future all-dc offshore wind farms, traction, and solid state transformers. This paper describes a design methodology taking into account loss calculation, isolation requirements, and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a design example to find the highest power density while the efficiency, isolation, thermal, and leakage inductance requirements are all met.

  • 27.
    Behr, R
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Eklund, G
    Analysis of different measurement set-ups for a programmable Josephson valtage standard2002Inngår i: Conference on Precision Electromagnetic Measurements CPEM-2002, Ottawa, IEEE , 2002, , s. 390-391Konferansepaper (Annet vitenskapelig)
  • 28. Belov, Ilja
    et al.
    Carlsson, Jan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Investigation of the Coupling to a Wire inside a Box with Apertures by Means of FDTD Simulations2002Konferansepaper (Fagfellevurdert)
  • 29.
    Bengtsson, Christer
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Fransson, Henrik
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Utveckling av metod för bestämning av luftens densitet vid precisionsvägningar.1993Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 30.
    Berg, Niclas
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    A study of time transfer stability in a fibre-optical communication network.2006Rapport (Fagfellevurdert)
  • 31.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Absolute calibration of a 100 kV DC divider.1996Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 32.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Analysis of metrological requirements for electrical measurement of HVDC station losses2012Inngår i: IEEE Transactions on Instrumentation and Measurement, Vol. 61, nr 10, s. 2695-2700Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    23 May 2012

  • 33.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Calibration of high resolution digital recorders for impulse measurements.1998Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 34.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Difference amplifier for use in accurate voltage transformer calibrations.1989Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 35.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    International comparison of measurement of 200 kV DC, Results obtained of SP.2008Rapport (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 36.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Publishable JRP2012Rapport (Fagfellevurdert)
  • 37.
    Bergman, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Qualification of a reference measuring systems for impulse voltage.1992Rapport (Fagfellevurdert)
  • 38.
    Bergman, Anders
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Elg, Alf Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Hällström, J
    Dedeoglu, S
    Houtzager, E
    lucas, W
    Merev, A
    Weber, C
    Design of a wideband HVDC reference divider2012Inngår i: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , s. 207-208s. 207-208Konferansepaper (Fagfellevurdert)
  • 39.
    Bergman, Anders
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Larsson, A
    Verfication of AC measuring system linearity1998Inngår i: Conference proceedings, ERA Technology, 1998, , s. 2/2.1-10Konferansepaper (Annet vitenskapelig)
  • 40.
    Bergman, Anders
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Meisner, Johann
    RISE., SP – Sveriges Tekniska Forskningsinstitut.
    Svensson, Stefan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet. Physikalisch Technische Bundestanstalt, Germany.
    Enabling DC-Side Metering in HVDC Stations2014Inngår i: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 29, nr 1, s. 370-377Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    HVDC power transmission is now being considered not only for point-to-point interties, but also as true grids where several operators may tie into the grid, each having its own economic sphere. In this new situation, it is important that transmitted energy be distinguished from losses incurred in the converter stations, to enable a fair distribution of costs for grid operation. To this end, a metrology infrastructure is needed where high-current and high-voltage transducers must be possible to calibrate traceably, and where dc electricity meters can be calibrated and approved. A research project is currently working with these questions in a concerted European research effort, funded by the European Commission. The present publication highlights important aspects of this work.

  • 41.
    Bergsten, Tobias
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Disordered Fermi liquid in epitaxial graphene from quantum transport measurements2011Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 107, nr 16, s. 166602-Artikkel i tidsskrift (Fagfellevurdert)
  • 42.
    Bergsten, Tobias
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Gunnarsson, Ove
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Eklund, Gunnar
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A precision current source using Δ-Σ modulation.2011Inngår i: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 60, nr 7, s. 2341-2346Artikkel i tidsskrift (Fagfellevurdert)
  • 43.
    Bergsten, Tobias
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Eklund, Gunnar
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Josephson waveform generation using multilevel Δ-Σ Modulation2012Inngår i: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , s. 172-173s. 172-173, artikkel-id 6250856Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We present a novel method of generating an ac voltage using a programmable Josephson voltage standard. The ac voltage is generated by Δ-Σ (Delta-Sigma) modulation of multiple Josephson levels. Compared with an ac voltage generated by stepwise approximation, the Δ-Σ method reduces the low frequency harmonics of the generated signal. We demonstrate this method by generating a 90 Hz sine wave and measuring the spectrum with a digitizer.

  • 44.
    Bergsten, Tobias
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Determining voltage dependence of the phase response in voltage dividers2012Inngår i: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , s. 282-283s. 282-283, artikkel-id 6250912Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We have developed methods to characterise voltage dependence of the phase response in voltage dividers. The voltage dependence is a combination of two parts, a linear dependence and a power dependence due to voltage and temperature dependence in capacitors respectively. The standard uncertainty of the phase at 240 V and 100 kHz is estimated to be 20 μrad.

  • 45.
    Bergstrand, Sten
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Evaluation of GNSS Monument Stability2010Inngår i: IAG Symposium on Reference Frames for Applications in Geosciences, REFAG 2010, 2010, , s. 45-50Konferansepaper (Fagfellevurdert)
  • 46.
    Bergstrand, Sten
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Saracoglu, Erhan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad.
    Continuous monitoring of a long-span cable-stayed timber bridge2014Inngår i: Journal of Civil Structural Health Monitoring, ISSN 2190-5452, Vol. 5, nr 2, s. 183-194Artikkel i tidsskrift (Fagfellevurdert)
  • 47.
    Bich, Walter
    et al.
    INRIM, Italy.
    Cox, Maurice G.
    NPL National Physical Laboratory, United Kingdom.
    Dybkær, Rene
    Region H Frederiksberg Hospital, Denmark.
    Elster, Clemens
    PTB Physikalisch-Technische Bundesanstalt, Germany.
    Estler, W. Tyler
    National Institute of Standards and Technology, USA.
    Hibbert, D. Brynn
    University of New South Wales, Australia.
    Imai, Hidetaka
    National Institute of Technology and Evaluation, Japan.
    Kool, Willem
    Bureau International de Métrologie Légale, France.
    Michotte, Carine
    Bureau International des Poids et Mesures, France.
    Nielsen, Lars
    Danish Fundamental Metrology Ltd, Denmark.
    Pendrill, Leslie
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Sidney, Steve
    National Laboratory Association, South Africa.
    van der Veen, Adriaan M. H.
    Van Swinden Laboratorium, The Netherlands.
    Wöger, Wolfgang
    Physikalisch-Technische Bundesanstalt, Germany.
    Revision of the 'Guide to the Expression of Uncertainty in Measurement'2012Inngår i: Metrologia, ISSN 0026-1394, E-ISSN 1681-7575, Vol. 49, nr 6, s. 702-705Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Joint Committee for Guides in Metrology, Working Group 1, JCGM-WG1, is currently revising the 'Guide to the Expression of Uncertainty in Measurement'. In this communication, the motivation for undertaking such a revision is given and the main changes with respect to the current, 2008 edition are outlined.

  • 48.
    Bideberg, Glenn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Ebenhag, Sven-Christian
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Jaldehag, Kenneth
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Hedekvist, Per Olof
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Construction of a secure clock location for alternative realization of UTC(SP)2014Inngår i: 2014 European Frequency and Time Forum (EFTF), 2014, s. 498-501, artikkel-id 7331545Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Swedish standard time is regulated by law to follow UTC as maintained by the BIPM. The atomic clocks that are used to implement UTC(SP), the realization of UTC in Sweden, are located at four different sites and are reported to TAI using data from TWSTFT and GNSS links. The activities in the Time and Frequency laboratory at SP are presently undergoing an expansion with the construction of a new additional secure site and the implementation of a distributed time scale.

  • 49.
    Björkdahl Sundling, Catherine
    et al.
    Stockholm University, Sweden.
    Berglund, Birgitta
    Stockholm University, Sweden; Karolinska Institute, Sweden.
    Nilsson, Mats
    Stockholm University, Sweden; Karolinska Institute, Sweden.
    Emardson, Ragne
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Pendrill, Leslie
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    New perspective on the accessibility of railway transport for the vulnerable traveller2013Inngår i: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 459, nr 1, artikkel-id 012021Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Vulnerable travellers experience various problems in the transport environment. These may reduce public travel confidence and consequently lead to decreased mobility. A goal of our research is to find out how to improve the accessibility to railway travelling, especially, for persons with functional limitations. By reducing barriers, the ability of travelling would be improved, and consequently allow for more flexible travel behaviors. In order to develop a model and a method of measurement for accessibility, we (a) constructed a reference group of representative ‘typical older persons’ (65-85 years) from questionnaire data, and (b) developed an accessibility measure for persons with functional limitations. In this measure barriers have different weights for the different persons depending on their functional ability and travel behavior. This gives the probability of facing a certain barrier when travelling to a certain destination; that is, a measure of accessibility for the individual. The more weight placed on a certain barrier, the less probable it is that the particular journey will take place. These weights will be obtained in forthcoming research on the perception of a set of various travel scenarios representing barriers.

  • 50.
    Borgqvist, Martin
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Alexandersson, Anna
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Elektronik.
    Löfdahl, Gunn-Mari
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Tullin, Claes
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Leisner, Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Elektronik.
    Segersten, Jenny
    Aronsson, Björn
    Granström, Robert
    Ekdunge, Per
    Förstudie av testbädd för bränsleceller2013Rapport (Annet vitenskapelig)
    Abstract [sv]

    Prestudy of test bed for fuel cells This report investigates the potential needs and benefits of a Swedish national test bed for fuel cell and hydrogen technologies. The analysis is based on an interview study among 43 organisations within the field, as well as on inventory studies on existing test infrastructure in Sweden. The result is aggregated into a proposal that describes a test bed in terms of functionality and organisation.

    Fulltekst (pdf)
    FULLTEXT01
1234567 1 - 50 of 401
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
v. 2.41.0