Johan Nilsson

Remburser - Korrespondentbankens kontraktsrelation med köparen och säljaren (2009)

NILSSON, JOHAN

Letters of credit is an instrument of payment that is frequently used in international trade. Normally the buyer engage a bank which irrevocably promise to pay the seller when the seller...

On the Order Dimension of Outerplanar Maps (2009)

Felsner, Stefan, Nilsson, Johan

Schnyder characterized planar graphs in terms of order dimension. Brightwell and Trotter proved that the dimension of the vertex-edge-face poset $\Pvef{M}$ of a planar map $M$ is at most four. In...

Electrically detected interferometry of Majorana fermions in a topological insulator (2009)

Akhmerov, A. R., Nilsson, Johan, Beenakker, C. W. J.

We show how a chiral Dirac fermion (a massless electron or hole) can be converted into a pair of neutral chiral Majorana fermions (a particle equal to its own antiparticle). These two types of...

Närståendevårdares syn på teknologi och webbaserade tjänster i vårdandet av en äldre närstående i hemmet med en diagnostiserad demenssjukdom (2009)

Johansson, Jenny, Nilsson, Johan

I dagens samhälle har det framkommit att tekniken som utvecklas sällan eller aldrig har anpassats efter närståendevårdares behov och situation. För att kunna förändra närståendevårdarnas...

AC Ion Current Interface (2009)

Nilsson, Johan

An effective way to extract combustion parameters from a spark ignited engine is to measure the level of ionization. One way to do this is to use the spark plug as a sensor.Until now this has been...

Effektiviserad materialhantering genom förbättrat flöde. (2009)

Hodzic, Senad, Nilsson, Johan

This examination paper is the final part of the three years long engineering education in industrial engineering and management, with focus on logistics and leadership, at the school of engineering...

Datorer, sömn och ungdomar : En enkätundersökning av gymnasieelevers sömnvanor, datoranvändande och eventuella kopplingar till skolprestation (2009)

Jeppsson, Emanuel, Nilsson, Johan

Denna uppsats syftade till att behandla gymnasieungdomars sömnvanor och datoranvändandeoch dessa faktorers eventuella samband med elevernas studieprestation. För att undersökadetta har 130...

Datorer, sömn och ungdomar : En enkätundersökning av gymnasieelevers sömnvanor, datoranvändande och eventuella kopplingar till skolprestation (2009)

Jeppsson, Emanuel, Nilsson, Johan

Denna uppsats syftade till att behandla gymnasieungdomars sömnvanor och datoranvändandeoch dessa faktorers eventuella samband med elevernas studieprestation. För att undersökadetta har 130...

Effektiviserad materialhantering genom förbättrat flöde. (2009)

Hodzic, Senad, Nilsson, Johan

This examination paper is the final part of the three years long engineering education in industrial engineering and management, with focus on logistics and leadership, at the school of engineering...

AC Ion Current Interface (2009)

Nilsson, Johan

An effective way to extract combustion parameters from a spark ignited engine is to measure the level of ionization. One way to do this is to use the spark plug as a sensor.Until now this has been...

Närståendevårdares syn på teknologi och webbaserade tjänster i vårdandet av en äldre närstående i hemmet med en diagnostiserad demenssjukdom (2009)

Johansson, Jenny, Nilsson, Johan

I dagens samhälle har det framkommit att tekniken som utvecklas sällan eller aldrig har anpassats efter närståendevårdares behov och situation. För att kunna förändra närståendevårdarnas...

Bound states and magnetic field-induced valley splitting in gate-tunable graphene quantum dots (2009)

Recher, Patrik, Nilsson, Johan, Burkard, Guido, Trauzettel, Björn

The magnetic field dependence of energy levels in gapped single- and bilayer graphene quantum dots (QDs) defined by electrostatic gates is studied analytically in terms of the Dirac equation. Due to...

Adatoms in Graphene (2008)

Neto, Antonio H. Castro, Kotov, Valeri N., Nilsson, Johan, Pereira, Vitor M., Peres, Nuno M. R., Uchoa, Bruno

We review the problem of adatoms in graphene under two complementary points of view, scattering theory and strong correlations. We show that in both cases impurity atoms on the graphene surface...

Bound states and magnetic field-induced valley splitting in gate-tunable graphene quantum dots (2008)

Recher, Patrik, Nilsson, Johan, Burkard, Guido, Trauzettel, Bjoern

The magnetic field dependence of energy levels in gapped single- and bilayer graphene quantum dots (QDs) defined by electrostatic gates is studied analytically in terms of the Dirac equation. Due to...

Electronic properties of a biased graphene bilayer (2008)

Castro, Eduardo V., Novoselov, K. S., Morozov, S. V., Peres, N. M. R., Nilsson, Johan, ...

We study, within the tight-binding approximation, the electronic properties of a graphene bilayer in the presence of an external electric field applied perpendicular to the system -- \emph{biased...

Splitting of a Cooper pair by a pair of Majorana bound states (2008)

Nilsson, Johan, Akhmerov, A. R., Beenakker, C. W. J.

Majorana bound states are spatially localized superpositions of electron and hole excitations in the middle of a superconducting energy gap. A single qubit can be encoded nonlocally in a pair of...

Progress in high-power single frequency master oscillator power amplifier (2008)

Maran, Jean-Noel, Jeong, Yoonchan, Yoo, Seongwoo, Sahu, Jayanta, Nilsson, Johan

In the recent years some tremendous progresses have been made to scale up the output power of fiber laser to the point where fiber laser technology is becoming a serious competitor to the solid-state...

Sur les nombres mal approximables par les nombres q-adiques (2008)

Nilsson, Johan

La thèse prend comme point de départ les approximations diophantiennes en focalisant sur l'ensemble des nombres mal approxirnables. Nous construisons deux ensembles de nombres mal approxirnables en...

How to detect the pseudospin-1/2 Berry phase in a photonic crystal with a Dirac spectrum (2008)

Sepkhanov, R. A., Nilsson, Johan, Beenakker, C. W. J.

We propose a method to detect the geometric phase produced by the Dirac-type band structure of a triangular-lattice photonic crystal. The spectrum is known to have a conical singularity (= Dirac...

CrawLogo: empowering end-users to program the Web (2008)

Kevin McGee, Johan Nilsson

In order to create Web-enabled applications that programmatically use the Web as an expressive medium, the current choice is largely between conventional programming languages that are difficult to...

CrawLogo: empowering end-users to program the Web (2008)

Kevin McGee, Johan Nilsson

In order to create applications that programmatically use the Web as an expressive medium, the current choice is largely between those conventional programming languages that are difficult to master...

Insynstransaktioner - Erhåller insynspersoner i små bolag riskjusterad överavkastning? (2008)

ELLERSTRÖM, NIKLAS, CARELL, ERIK, EKSTRÖM, EMELIE, NILSSON, JOHAN

Syftet med studien är att med utgångspunkt i Fama & Frenchs trefaktormodell undersöka huruvida insynspersoner i små bolag erhåller riskjusterade överavkastningar, på kort och lång sikt, genom...

Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition (2008)

Nilsson, Johan, Bjork, Goran, Rudels, Bert, Winsor, Peter, Torres, Daniel

Author Posting. © Elsevier B.V. , 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version...

Styrketräning för barn - skadligt eller livsviktigt? : en kvantitativ studie av svenska idrottsförbunds inställning vad gäller styrketräning för barn (2008)

Nilsson, Johan, Von Rosen, Malcolm

SammanfattningSyfte och frågeställningarSyftet med denna studie är att undersöka vilka rekommendationer samt inställning svenska idrottsförbund har till styrketräning för...

Styrketräning för barn - skadligt eller livsviktigt? : en kvantitativ studie av svenska idrottsförbunds inställning vad gäller styrketräning för barn (2008)

Nilsson, Johan, Von Rosen, Malcolm

SammanfattningSyfte och frågeställningarSyftet med denna studie är att undersöka vilka rekommendationer samt inställning svenska idrottsförbund har till styrketräning för...

Sensor för hydraulolja (2008)

Börjesson, Johan, Nilsson, Johan

This is the final documentation of the basis that can be the foundation of how to solve theproblem with leaking hydraulic oil in a shoe press at the company Albany InternationalAB in Halmstad,...

Electronic properties of bilayer and multilayer graphene (2007)

Nilsson, Johan, Neto, A. H. Castro, Guinea, F., Peres, N. M. R.

We study the effects of site dilution disorder on the electronic properties in graphene multilayers, in particular the bilayer and the infinite stack. The simplicity of the model allows for an easy...

On numbers badly approximable by q-adic rationals (2007)

Nilsson, Johan

The thesis takes as starting point diophantine approximation with focus on the area of badly approximable numbers. For the special kind of rationals, the q-adic rationals, we consider two types of...

Stockholm (2007)

Johan Nilsson, Björn Wittenmark, Martin Törngren, Martin Sanfridson

The industrial trend in embedded systems is than an increasing amount of control applications

Transmission through a biased graphene bilayer barrier (2007)

Nilsson, Johan, Castro Neto, A. H., Guinea, F, Peres, N. M. R.

We study the electronic transmission through a graphene bilayer in the presence of an applied bias between the layers. We consider different geometries involving interfaces between both a monolayer...

The Coulomb impurity problem in graphene (2007)

Pereira, Vitor M., Nilsson, Johan, Neto, A. H. Castro

We address the problem of an unscreened Coulomb charge in graphene, and calculate the local density of states and displaced charge as a function of energy and distance from the impurity. This is done...

Electronic compressibility of a graphene bilayer (2007)

Kusminskiy, S. Viola, Nilsson, Johan, Campbell, D. K., Neto, A. H. Castro

We calculate the electronic compressibility arising from electron-electron interactions for a graphene bilayer within the Hartree-Fock approximation. We show that, due to the chiral nature of the...

Sur les nombres mal approximables par les nombres q-adiques (2007)

Nilsson, Johan

La thèse prend comme point de départ les approximations diophantiennes en focalisant sur l'ensemble des nombres mal approxirnables. Nous construisons deux ensembles de nombres mal approxirnables en...

Sur les nombres mal approximables par les nombres q-adiques (2007)

Nilsson, Johan

La thèse prend comme point de départ les approximations diophantiennes en focalisant sur l'ensemble des nombres mal approxirnables. Nous construisons deux ensembles de nombres mal approxirnables en...

Sur les nombres mal approximables par les nombres q-adiques (2007)

Nilsson, Johan

La thèse prend comme point de départ les approximations diophantiennes en focalisant sur l'ensemble des nombres mal approxirnables. Nous construisons deux ensembles de nombres mal approxirnables en...

Noninvasive acoustic cell trapping in a microfluidic perfusion system for online bioassays (2007)

Evander, Mikael, Johansson, Linda, Lilliehorn, Tobias, Piskur, Jure, Lindvall, Magnus, Johansson, Stefan, ...

Techniques for manipulating, separating, and trapping particles and cells are highly desired in today's bioanalytical and biomedical field. The microfluidic chip-based acoustic noncontact trapping...

Impurities in a Biased Graphene Bilayer (2006)

Nilsson, Johan, Neto, A. H. Castro

We study the problem of impurities and mid-gap states in a biased graphene bilayer. We show that the properties of the bound states, such as localization lengths and binding energies, can be...

Persistent currents through a quantum impurity: Protection through integrability (2006)

Nilsson, Johan, Johannesson, Henrik

We consider an integrable model of a one-dimensional mesoscopic ring with the conduction electrons coupled by a spin exchange to a magnetic impurity. A symmetry analysis based on a Bethe Ansatz...

Biased bilayer graphene: semiconductor with a gap tunable by electric field effect (2006)

Castro, Eduardo V., Novoselov, K. S., Morozov, S. V., Peres, N. M. R., Nilsson, Johan, ...

We demonstrate that the electronic gap of a graphene bilayer can be controlled externally by applying a gate bias. From the magneto-transport data (Shubnikov-de Haas measurements of the cyclotron...

High-power, high repetition rate picosecond and femtosecond sources based on Yb-doped fiber amplification of VECSELs (2006)

Dupriez, Pascal, Finot, Christophe, Malinowski, Andy, Sahu, Jayanta.K., Nilsson, Johan, Richardson, David. J., ...

Picosecond pulses at gigahertz repetition rates from two different passively mode-locked VECSELs are amplified to high powers in cascaded ytterbium doped fiber amplifiers. Small differences in pulse...

ST-elevation myocardial infarction : studies of outcome in relation to fibrinolysis and ischemia monitoring with on-line vectorcardiography. (2006)

Nilsson, Johan

The treatment of acute myocardial infarction (AMI) has undergone a tremendous development during the last decades, and the most important factor is probably the introduction of reperfusion therapy...

ST-elevation myocardial infarction : studies of outcome in relation to fibrinolysis and ischemia monitoring with on-line vectorcardiography. (2006)

Nilsson, Johan

The treatment of acute myocardial infarction (AMI) has undergone a tremendous development during the last decades, and the most important factor is probably the introduction of reperfusion therapy...

High-power high repetition rate picosecond and femtosecond sources based on Yb-doped fiber amplification of VECSELs (2006)

Dupriez, Pascal, Finot, Christophe, Malinowski, Andy, Sahu, Jayanta K., Nilsson, Johan, Richardson, David J., ...

Picosecond pulses at gigahertz repetition rates from two different passively mode-locked VECSELs are amplified to high powers in cascaded ytterbium doped fiber amplifiers. Small differences in pulse...

Opportunities in high-power fiber lasers (2006)

Sahu, Jayanta K., Kim, Jaesun, Yoo, Seongwoo, Webb, Andrew, Codemard, Christophe, Dupriez, Pascal, ...

Fiber lasers and amplifiers offer unique characteristics that are derived from the use of a waveguide and the properties of rare-earth doped silica glass. Their capability for high output power, with...

Transmission through a biased graphene bilayer barrier (2006)

Nilsson, Johan, Neto, A. H. Castro, Guinea, F., Peres, N. M. R.

We study the electronic transmission through a graphene bilayer in the presence of an applied bias between layers. We consider different geometries involving interfaces between both a monolayer and a...

Hur barn och ungdomar inspireras till att utöva musik på fritiden - något alla lärare som undervisar i musik bör veta (2006)

Nilsson, Johan, Thulin, Cecilia

Syftet med undersökningen var att ta reda på varför barn och ungdomar börjar musicera och varifrån deras musikintresse kommer. Vår teoretiska utgångspunkt är det sociokulturella perspektivet....

Guided-wave second harmonic generation in a LiNbO₃ nonlinear photonic crystal (2006)

Gallo, Katia, Codemard, Christophe, Gawith, Corin B.E., Nilsson, Johan, Smith, Peter G.R., Broderick, Neil G.R., ...

We demonstrate twin-beam second-harmonic generation from telecommunications wavelengths in an optimized buried reverse proton exchanged planar waveguide made in 2D hexagonally poled LiNbO₃....

High-power single-mode picosecond fiber laser based on amplification of a passively mode-locked 1055-nm VECSEL (2006)

Dupriez, Pascal, Malinowski, Andy, Sahu, Jayanta K., Jeong, Yoonchan, Nilsson, Johan, Richardson, David J., ...

4.6 ps pulses at 910 MHz produced by a passively mode-locked VECSEL were amplified by ytterbium doped fiber amplifiers to average powers greater than 200 Wand subsequently compressed to 430 fs...

Electronic properties of graphene multilayers (2006)

Nilsson, Johan, Neto, A. H. Castro, Guinea, F., Peres, N. M. R.

We study the effects of disorder in the electronic properties of graphene multilayers, with special focus on the bilayer and the infinite stack. At low energies and long wavelengths, the electronic...

Millijoule high-peak power narrow-linewidth sub-hundred nanosecond pulsed fibre master-oscillator power-amplifier at 1.55 microns (2006)

Codemard, Christophe, Farrell, Carl, Dupriez, Pascal, Philippov, Valery, Sahu, Jayanta K., Nilsson, Johan

In the first part of this article we review the challenges associated with erbium-ytterbium doped fibre amplifiers and the design considerations to scale-up the output power and energy using...

Accurate efficiency evaluation of energy-transfer processes in phosphosilicate Er3+-Yb3+-codoped fibers (2006)

Laroche, Mathieu, Girard, Sylvain, Sahu, Jayanta K., Clarkson, W. Andrew, Nilsson, Johan

A new approach for the prediction of energy-transfer efficiencies in codoped Er-Yb double-clad fiber (EYDCF) is presented. Ab initio calculations have been performed on the basis of...

Suppression of stimulated Raman scattering in a high-peak-power pulsed 1060 nm fiber MOPA source with purely single-mode output using W-type fiber (2006)

Sahu, Jayanta Kumar, Dupriez, Pascal, Kim, Jae-Sun, Codemard, Christophe, Nilsson, Johan, Payne, David N.

Suppression of stimulated-Raman-Scattering in a 100 ps, 32 MHz pulsed fiber source is demonstrated. 12.5 kW of peak power was achieved in a small core single-mode ytterbium-doped fiber amplifier...

High power single-frequency Yb doped fiber amplifiers (2006)

Jeong, Yoonchan, Nilsson, Johan, Soh, Daniel B.S., Codemard, Christophe A., Dupriez, Pascal, Farrell, Carl, ...

We review the recent dramatic advances in high power single-frequency Yb doped fiber amplifiers and discuss fundamental aspects and future prospects. We present up-to-date experimental results with...

Konst, musik eller konstigt? - En undersökning om unga musikers syn på det kreativa uttryckets gränsland. Art, music and the fabric that defines it - An inquiry regarding young musicians' views of the boundaries of creative expression (2006)

Nilsson, Johan

This paper is an inquiry that is trying to establish four young musicians' views of art and music.To define the boundaries of music and art and explore the possible similarities. The musicians were...

Dragprovsegenskaper av svetsad och värmebehandlad JBK-75 (2006)

Nilsson, Johan

Syftet med detta examensarbete var att ta fram dragprovsegenskaper för EB-svetsad och värmebehandlad JBK-75. JBK-75 är en järnbaserad superlegering, snarlik A-286 men med förbättrade...

Generation d'impulsions ultrabreves de haute puissance et a haut taux de repetition paramplification fibree en regime auto-similaire ou d'auto-modulation de phase (2006)

Dupriez, Pascal, Finot, Christophe, Malinowski, Andy, Nilsson, Johan, Richardson, David, Wilcox, Keith, ...

Nous démontrons l’amplification d’impulsions pico- et femto-secondes par un dispositif fibré à un taux de répétition de 1 GHz obtenu par utilisation d’un VECSEL passivement mode-locké....

Temperature-dependent fluorescence characteristics of an ytterbium-sensitized erbium-doped silica fiber for sensor applications (2006)

Baek, Seungin, Jeong, Yoonchan, Nilsson, Johan, Sahu, Jayanta K., Lee, Byoungho

The characteristics of temperature-dependent fluorescence of an ytterbium (Yb ions are measured with varying the fiber temperature. The ratio of the dual fluorescence intensities varies exponentially...

Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structures (2006)

Oh, Kyungwhan, Yoo, Seongwoo, Ryu, Uh-Chan, Kim, Seungtaek, Soh, Daniel B.S., Sahu, Jayanta K., ...

Novel techniques to control the effective emission cross section of a rare earth-doped optical fiber with a functional cladding structure are reviewed for applications in active fiber devices. We...

Supervisor (2006)

Johan Nilsson, Vesa Virta

Vulnerability Scanners Computer networks are used by organisations and companies as a carrier of communication and services. Disruption of the network service can severally harm the organisation. A...

Hur barn och ungdomar inspireras till att utöva musik på fritiden - något alla lärare som undervisar i musik bör veta (2006)

Nilsson, Johan, Thulin, Cecilia

Syftet med undersökningen var att ta reda på varför barn och ungdomar börjar musicera och varifrån deras musikintresse kommer. Vår teoretiska utgångspunkt är det sociokulturella perspektivet....

Comparison of 19 pre-operative risk stratification models in open-heart surgery (2006)

Nilsson, Johan, Algotsson, Lars, Höglund, Peter, Lührs, Carsten, Brandt, Johan

Aims To compare 19 risk score algorithms with regard to their validity to predict 30-day and 1-year mortality after cardiac surgery. Methods and results Risk factors for patients undergoing heart...

Comparison of 19 pre-operative risk stratification models in open-heart surgery (2006)

Nilsson, Johan, Algotsson, Lars, Höglund, Peter, Lührs, Carsten, Brandt, Johan

Aims To compare 19 risk score algorithms with regard to their validity to predict 30-day and 1-year mortality after cardiac surgery. Methods and results Risk factors for patients undergoing heart...

Hur barn och ungdomar inspireras till att utöva musik på fritiden - något alla lärare som undervisar i musik bör veta (2006)

Nilsson, Johan, Thulin, Cecilia

Syftet med undersökningen var att ta reda på varför barn och ungdomar börjar musicera och varifrån deras musikintresse kommer. Vår teoretiska utgångspunkt är det sociokulturella perspektivet....

Electron-electron interactions and the phase diagram of a graphene bilayer (2005)

Nilsson, Johan, Neto, A. H. Castro, Peres, N. M. R., Guinea, F.

We study the effects of long and short-range electron-electron interactions in a graphene bilayer. Using a variational wavefunction technique we show that in the presence of long-range Coulomb...

Risk stratification in cardiac surgery: Algorithms and applications (2005)

Nilsson, Johan

The aims of this research was to compare different risk score algorithms with regard to their validity to predict 30-day and one-year mortality after open-heart surgery, to evaluate if the...

Heat Bath Approach to Landau Damping and Pomeranchuk Quantum Critical Points (2005)

Nilsson, Johan, Neto, A. H. Castro

We study the problem of the damping of collective modes close to a Pomeranchuk quantum critical point in a Fermi liquid. In analogy with problems in dissipative open quantum systems, we derive the...

Ny teknik för kombisådd : (2005)

Nilsson, Staffan, Nilsson, Johan

The use of combi-drilling during spring tillage has become very common in southern Sweden in recent years. Combi-drilling leads to fewer passes on the field and better plant nutrient utilisation. An...

Millijoule high-peak power narrow-linewidth sub-hundred nanosecond pulsed fibre MOPA at 1.55 microns (2005)

Codemard, Christophe, Farrell, Carl, Dupriez, Pascal, Philippov, Valery, Sahu, Jayanta K., Nilsson, Johan

A millijoule, high-peak power, sub-hundred nanosecond pulse, fibre master-oscillator power-amplifier (MOPA) source with narrow linewidth output is presented. In addition, fibre MOPA design challenges...

Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125 (2005)

Médigue, Claudine, Krin, Evelyne, Pascal, Géraldine, Barbe, Valérie, Bernsel, Andreas, Bertin, Philippe N., ...

A considerable fraction of life develops in the sea at temperatures lower than 15°C. Little is known about the adaptive features selected under those conditions. We present the analysis of the...

Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125 (2005)

Médigue, Claudine, Krin, Evelyne, Pascal, Géraldine, Barbe, Valérie, Bernsel, Andreas, Bertin, Philippe N., ...

A considerable fraction of life develops in the sea at temperatures lower than 15°C. Little is known about the adaptive features selected under those conditions. We present the analysis of the...

Accurate description of heterogeneous tumors for biologically optimized radiation therapy (2004)

Nilsson, Johan

In this thesis, a model of tissue oxygenation is presented, that takes into account the heterogeneous nature of tumor vasculature. Even though the model is rather simple, the resulting oxygen...

Accurate description of heterogeneous tumors for biologically optimized radiation therapy (2004)

Nilsson, Johan

In this thesis, a model of tissue oxygenation is presented, that takes into account the heterogeneous nature of tumor vasculature. Even though the model is rather simple, the resulting oxygen...

Superfluorescence three-level neodymium-doped fiber source (2004)

Selvas-Aguilar, Romeo J., Martinez-Gamez, M.A., Martinez-Rios, A., Sanchez-Lozano, X., Basurto-Pensado, Miguel A., Nilsson, Johan

We report on a new type of cladding-pumped neodymium-doped fiber which enables strong ASE emission at the wavelength region of 940 nm with a highly reduced emission in the four-level transition at...

Studies on Oxidative Couplings in H-Phosphonate Chemistry (2004)

Nilsson, Johan

In this thesis oxidative coupling of H-phosphonate and H phosphonothioate diesters with different alcohols and amines are presented. Since the reactions with alcohols previously have been...

Studies on Oxidative Couplings in H-Phosphonate Chemistry (2004)

Nilsson, Johan

In this thesis oxidative coupling of H-phosphonate and H phosphonothioate diesters with different alcohols and amines are presented. Since the reactions with alcohols previously have been...

Familjehem och sammanbrott -  Möjligheter och begränsningar vid familjehemsplacering av barn och unga (2004)

Nilsson, Johan, Söderkvist, Christina

The purpose of this paper was to examine and analyse which possibilities and limits that exist when putting children in to foster homes. Through interviews with ten social workers, our aim was to...

Förtroendemannaorganisationer : en jämförelse mellan Swedish Meats och Danish Crown (2004)

Nilsson, Johan

Studiens syfte är att utreda hur de egenskaper, som kännetecknar Swedish Meats förtroendemannaorganisation, påverkar företagets framgång i termer av volym- och medlemsutveckling. Denna...

Wideband tunable high power narrow linewidth erbium-ytterbium doped fiber laser using compression-tunable fiber Bragg grating (2004)

Alegria, Carlos, Jeong, Yoonchan, Codemard, Christophe, Sahu, Jayanta K., Fu, Libin, Mokhtar, Mohd Ridzuan, ...

We demonstrate a high power erbium-ytterbium co-doped large-core fiber laser with narrow linewidth, an M value of 1.7 and a broad tuning range. The fiber was cladding-pumped by a diode stack emitting...

400 mW 1060nm ytterbium doped fiber DFB laser (2004)

Codemard, Christophe A., Hickey, Louise M.B., Yelen, Kuthan, Soh, Daniel B.S., Wixey, Rachel, Coker, Mark, ...

We report for the first time, more than 400 mW of output power at 1056.1nm from a distributed feedback (DFB) fiber laser. The DFB fiber laser comprises a simple π-phase-shifted Bragg grating written...

Ytterbium-doped double-clad large-core fiber lasers with kW-level continuous-wave output power (2004)

Jeong, Yoonchan, Sahu, Jayanta K., Baek, Seungin, Alegria, Carlos, Soh, Daniel B.S., Codemard, Christophe, ...

We report highly efficient cladding-pumped ytterbium-doped fiber lasers in various configurations, generating up to 1 kW of continuous-wave output power at 1.1 μm with an 80% slope efficiency and a...

Experimentally based topology models for E. coli inner membrane proteins (2004)

Rapp, Mikaela, Drew, David, Daley, Daniel O., Nilsson, Johan, Carvalho, Tiago, Melén, Karin, ...

Membrane protein topology predictions can be markedly improved by the inclusion of even very limited experimental information. We have recently introduced an approach for the production of reliable...

Micro Total Analysis System 2004 (2004)

Laurell, Thomas, Nilsson, Johan, Jensen, Klavs, Harrison, D. Jed, Kutter, Jörg P.

The Eighth International Conference on Miniaturized Systems in Chemistry and Life Science - MicroTas 2004 - is an annual meeting focusing on the research, development and application of miniaturized...

High power fiber lasers: new developments (2003)

Nilsson, Johan, Sahu, Jayanta K., Jeong, Yoochan, Clarkson, W.A., Selvas, R., Grudinin, Anayoly B., ...

We assess different power limits of cladding-pumped fiber lasers. Despite recent advances in pump sources, these are still primarily limited by available pump power. We find that it should be...

CrawLogo: An Experiment in End-User Programming for Web-Enabled Applications (2003)

Nilsson, Johan

With the rise of the Web, there is more interest among end-users to create different kinds of software that use elements from the Web or allow for networked interaction between users. Currently...

CrawLogo: An Experiment in End-User Programming for Web-Enabled Applications (2003)

Nilsson, Johan

With the rise of the Web, there is more interest among end-users to create different kinds of software that use elements from the Web or allow for networked interaction between users. Currently...

Improved approximation algorithms for optimization problems in graphs with superlogarithmic treewidth (2003)

Artur Czumaj, Andrzej Lingas, Johan Nilsson

In this paper we present two novel generic schemes for approximation algorithms for optimization to partial k-trees. Our first scheme yields deterministic polynomialtime algorithms achieving...

Ready-made matrix-assisted laser desorption/ionization target plates coated with thin matrix layer for automated sample deposition in high-density array format. (2002)

Miliotis, Tasso, Kjellström, Sven, Nilsson, Johan, Laurell, Thomas, Edholm, Lars-Erik, Marko-Varga, György

The methodology for ready-made matrix-assisted laser desorption/ionization (MALDI) target plates covered with an optimized thin layer consisting of matrix and nitrocellulose has been developed....

Extracting Information from Sport Articles in Swedish Using Pattern Recognition (2002)

Erik Lindvall, Johan Nilsson

Sport articles from newspapers containing end results of one or multiple games is a special application of the information extraction task, in that almost all interesting information is available in...

University advisor: (2002)

Martin Persson, Johan Nilsson, Martin Persson, Johan Nilsson, Johan Nohave, Michael Mattsson

Modifying an architecture for interface customisation support

Prediction of partial membrane protein topologies using a consensus approach (2002)

Nilsson, Johan, Persson, Bengt, Von Heijne, Gunnar

We have developed a method to reliably identify partial membrane protein topologies using the consensus of five topology prediction methods. When evaluated on a test set of experimentally...

A cladding pumped Ytterbium-doped fiber laser with holey inner and outer cladding (2001)

Furusawa, Kentaro, Malinowski, A.N., Price, Jonathan H.V., Monro, Tanya M., Sahu, Jayanta K., Nilsson, Johan, ...

We have fabricated an ytterbium doped all-glass double-clad large mode area holey fiber. A highly efficient cladding pumped single transverse mode holey fiber laser has been demonstrated, allowing...

Shareholder reactions to the introduction of stock-option programs in swedish companies (2001)

Elmlund, Lars, Nilsson, Johan

The background of this research comes from the large debate that has been going on over stock-option programs during the past years and the insignificant amount of research on the issue in Sweden. In...

Fabrication & characterisation of Yb3+:Er3+ phosphosilicate fibres for lasers (1998)

Vienne, Guillaume G., Caplen, Julie E., Dong, Liang, Minelly, John D., Nilsson, Johan, Payne, David N.

Fabrication process of efficient Yb codoped fiber. We explain how we evaluate the fibers and discuss the effect of the ytterbium to erbium concentration ratio on the laser characteristics. Finally,...

Real-Time Control Systems with Delays (1998)

Nilsson, Johan

Control loops that are closed over a communication network get more and more common. A problem with such systems is that the transfer delays will be varying with different characteristics depending...

Stochastic analysis and control of real-time systems with random time delays (1998)

Johan Nilsson, Bo Bernhardsson

Abstract: The paper discusses modeling and analysis of real-time systems subject to random time delays in the communication network. A new method for analysis of existing schemes is presented. The...

Analysis of time delays in synchronous and asynchronous control loops (1998)

Ben Bastian, Johan Nilsson

In this paper we describe how to determine the time delays caused by synchronous and asynchronous control loops. These time delays can vary in a quite irregular way and can cause problems for the...

LQG Control Over a Markov Communication Network (1997)

Johan Nilsson, Bo Bernhardsson

We formulate and solve a control problem where data are sent over a communication network that introduces random time delays. Past time delays are assumed known by the use of timestamps and the...

Analysis of Real-Time Control Systems with Time Delays (1996)

Johan Nilsson, Bo Bernhardsson

We discuss modeling and analysis of real-time control systems subject to random time delays in the communication network. A new method for analysis of given control schemes is presented. The state of...

The impact of tropical cyclones on the ocean / (1995)

Nilsson, Johan.

Thesis (doctoral)--Göteborgs universitet, 1995.

Timing problems in real-time control systems (1995)

Johan Nilsson

The paper formulates and discusses timing problems in real-time systems. Different ways to eliminate the effects of communication delays are considered. 1.

Timing problems in real-time control systems (1995)

Johan Nilsson

The paper formulates and discusses timing problems in real-time systems. Di�erent ways to eliminate the e�ects of communication delays are considered. 1.

Timing Problems in Real-Time Control Systems (1995)

Johan Nilsson, Björn Wittenmark, Ericsson Mobile, Communications Ab, Martin Sanfridson

Introduction The industrial trend in embedded systems is than an increasing amount of control applications are implemented in distributed computer systems. Additional problems then face the designers...

Four Wave Mixing Limitation in Multichannel Coherent Optical Communication, (1992)

Nilsson, Johan, Dado, Milan, Jaskorzynska, Bozena

Four-wave mixing (FWM) in a fiber is a nonlinear effect likely to impose severe restrictions on transmitted powers and channel spacing in optical frequency-division multiplexed (FDM) systems, hence...

Rapid topology mapping of Escherichia coli inner-membrane proteins by prediction and PhoA/GFP fusion analysis

Drew, David, Sjöstrand, Dan, Nilsson, Johan, Urbig, Thomas, Chin, Chen-ni, De Gier, Jan-Willem, ...

We present an approach that allows rapid determination of the topology of Escherichia coli inner-membrane proteins by a combination of topology prediction and limited fusion-protein analysis. We...

Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125

Médigue, Claudine, Krin, Evelyne, Pascal, Géraldine, Barbe, Valérie, Bernsel, Andreas, Bertin, Philippe N., ...

A considerable fraction of life develops in the sea at temperatures lower than 15°C. Little is known about the adaptive features selected under those conditions. We present the analysis of the...

Rapid topology mapping of Escherichia coli inner-membrane proteins by prediction and PhoA/GFP fusion analysis

Drew, David, Sjöstrand, Dan, Nilsson, Johan, Urbig, Thomas, Chin, Chen-ni, De Gier, Jan-Willem, ...

We present an approach that allows rapid determination of the topology of Escherichia coli inner-membrane proteins by a combination of topology prediction and limited fusion-protein analysis. We...

Coping with cold: The genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125

Médigue, Claudine, Krin, Evelyne, Pascal, Géraldine, Barbe, Valérie, Bernsel, Andreas, Bertin, Philippe N., ...

A considerable fraction of life develops in the sea at temperatures lower than 15°C. Little is known about the adaptive features selected under those conditions. We present the analysis of the...

Experimentally based topology models for E. coli inner membrane proteins

Rapp, Mikaela, Drew, David, Daley, Daniel O., Nilsson, Johan, Carvalho, Tiago, Melén, Karin, ...

Membrane protein topology predictions can be markedly improved by the inclusion of even very limited experimental information. We have recently introduced an approach for the production of reliable...

Prediction of partial membrane protein topologies using a consensus approach

Nilsson, Johan, Persson, Bengt, Von Heijne, Gunnar

We have developed a method to reliably identify partial membrane protein topologies using the consensus of five topology prediction methods. When evaluated on a test set of experimentally...

Stochastic Analysis and Control of Real-Time Systems with Random Time Delays

Johan Nilsson, Bo Bernhardsson, Björn Wittenmark

The paper discusses modeling and analysis of real-time systems subject to random time delays in the communication network. A new method for analysis of different control schemes is presented. The...