Multiscale Curvature Detection in Computer Vision,” Lic (2009)
Björn Johansson, C Björn Johansson
This thesis presents a new method for detection of complex curvatures such as corners, circles, and star patterns. The method is based on a second degree local polynomial model applied to a local...
Design of Augmented Reality for Collaboration (2009)
Susanna Nilsson, Björn Johansson
Augmented Reality has potential to support collaboration in complex situations, such as command and control. Unfortunately there are few studies on how such systems should be designed to facilitate...
Augmented Reality as a Tool to Achieve Common Ground for Network based Operations (2009)
Susanna Nilsson, Combitech Ab, Combitech Ab, Björn Johansson, Susanna Nilsson
In complex collaborative situations, such as crisis management, actors from different domains and organizations must work together. This is especially evident in network based operations where...
SIMTER - A Joint Simulation Tool for Production Development (2009)
Lind, Salla, Johansson, Björn, Stahre, Johan, Berlin, Cecilia, Fasth, Åsa, Heilala, Juhani, ...
VTT Working Papers 125
Combining shadow detection and simulation for estimation of vehicle size and position (2009)
Johansson, Björn, Wiklund, Johan, Forssén, Per-Erik, Granlund, Gösta
This paper presents a method that combines shadow detection and a 3D box model including shadow simulation, for estimation of size and position of vehicles. We define a similarity measure between a...
The tropical palm Mauritia flexuosa has highly nutritious fruits and is an important food resource for both humans and wildlife throughout its geographic range in South America. Unsustainable...
The tropical palm Mauritia flexuosa has highly nutritious fruits and is an important food resource for both humans and wildlife throughout its geographic range in South America. Unsustainable...
Azevedo, F., Marques, Filipe, Johansson, Björn
A reliable and sensitive technique for detection of DNA damage is the Single Cell Gel Assay (comet assay). In this procedure, cells are exposed to an electric field and damaged DNA moves out of the...
Resilience, Stability and Requisite Interpretation in Accident Investigations (2008)
Jonas Lundberg, Björn Johansson, Lundberg Johansson
Abstract. The concept of ‘resilience ’ is often absent in accident investigations, most likely because one of the central notions in resilience, ‘requisite imagination’, seems to be of...
ACHIEVING HIGH COMMITMENT IN AND OF SOURCING DECISIONS – A DECISION-MAKING PARADOX (2008)
Abstract. This paper describes a sourcing decision process and how that process is done in order to achieve high commitment in and of sourcing decisions. It can be stated that it is important with...
A MODELING AND SIMULATION FUNCTIONAL LIBRARY FOR SELF-CONTAINED SIMULATORS (2008)
Magnus Sethson, Jonas Larsson, Björn Johansson, Petter Krus
Abstract. Self-contained simulators are a computer execution run-time unit that may simulate a behavior of a physical system. It may be used for simulation analysis, system optimization or...
USING AUTONOMOUS MODULAR MATERIAL HANDLING EQUIPMENT FOR MANUFACTURING FLEXIBILITY (2008)
R G. Ingalls, M. D. Rossetti, J. S. Smith, B. A. Peters, Björn Johansson
This paper describes a modular autonomous material handling equipment solution for flexible automation. Discrete Event Simulation is in this case used as a tool for shortening time spent in many...
Level Operations and Learning in Computer Vision (2008)
Björn Johansson, Björn Johansson, C Björn Johansson
iii
Understanding coordination in emergency response (2008)
Hedvig Aminoff, Björn Johansson, Jiri Trnka
This paper describes and discusses analysis of an emergency management exercise. In the exercise scenario, different emergency management organizations jointly try to cope with a forest fire and...
Distributed Resource Allocation Strategies for Achieving Quality of Service (2008)
Björn Johansson, Constantin Adam, Mikael Johansson, Rolf Stadler
Abstract — We investigate the resource allocation problem for large-scale server clusters with quality-of-service objectives, where key functions are decentralized. Specifically, the optimal...
Linda Bergkvist, Björn Johansson
Abstract: This study evaluates factors involved at different stages in an IS outsourcing decision process. From a theoretical perspective, the motivation for IS outsourcing is often described as a...
Distributed Model Predictive Consensus (2008)
Björn Johansson, Alberto Speranzon, Mikael Johansson, Karl Henrik Johansson
Abstract — In this paper we consider the problem of designing a distributed control strategy such that a linear combination of the states of a number of vehicles coincide at a given time. The...
Lind, Salla, Krassi, Boris, Johansson, Björn, Viitaniemi, Juhani, Heilala, Juhani, Stahre, Johan, ...
18th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM 2008). Skövde, Sweden, 30 June - 2 July 2008, 1025 - 1031
Sustainable Manufacturing System Design With Simulation (2008)
Heilala, Juhani, Vatanen, Saija, Tonteri, Hannele, Montonen, Jari, Johansson, Björn, Lind, Salla, ...
Proceedings of Swedish Production Symposium, Stockholm 18-20 November 2008, Lindberg B., and Stahre J. (eds.), 93-100
On Distributed Optimization in Networked Systems (2008)
Numerous control and decision problems in networked systems can be posed as optimization problems. Examples include the framework of network utility maximization for resource allocation in...
On Distributed Optimization in Networked Systems (2008)
Numerous control and decision problems in networked systems can be posed as optimization problems. Examples include the framework of network utility maximization for resource allocation in...
Deciding on Sourcing Option for Hosting of Software Applications in Organisations (2007)
Software applications are of great importance in organisations, and performance of an organisation depends on how hosting of software applications are organised. This thesis deals with the question:...
Deciding on Sourcing Option for Hosting of Software Applications in Organisations (2007)
Software applications are of great importance in organisations, and performance of an organisation depends on how hosting of software applications are organised. This thesis deals with the question:...
During recent years the use of TMR (total mixed rations) has increased in Swedish lamb production. For many years TMR has been used for cattle and hence the information and knowledge is vast, while...
A reliable and sensitive technique for detection of DNA damage is the Single Cell Gel Assay (also known as comet assay). In this procedure, single cells are exposed to an electric field and damaged...
Proceedings Of The, Rogier Woltjer, Björn Johansson, Jonas Lundberg
Copyright The publishers will keep this document online on the Internet – or its possible replacement – starting from the date of publication barring exceptional circumstances. The online...
Ingvarsson, Michael, Johansson, Björn
Denna rapport är skriven med syfte att få en större inblick i vad polisens nya radiosystem RAKEL innebär för dess användare och då främst med betoning på polisverksamheten. Intresset fanns...
As disturbed binocular functions in small children may lead to severe amblyopia it is of interest to detect it as early as possible. Most tests for binocular functions, however, demand active...
As disturbed binocular functions in small children may lead to severe amblyopia it is of interest to detect it as early as possible. Most tests for binocular functions, however, demand active...
Distributed resource allocation in networked systems using decomposition techniques (2006)
The Internet and power distribution grids are examples of ubiquitous systems that are composed of subsystems that cooperate using a communication network. We loosely define such systems as networked...
Distributed resource allocation in networked systems using decomposition techniques (2006)
The Internet and power distribution grids are examples of ubiquitous systems that are composed of subsystems that cooperate using a communication network. We loosely define such systems as networked...
Analysis of the molecular interplay between Streptococcus pyogenes and its human host (2006)
The common human pathogen Streptococcus pyogenes is the causative agent of numerous mild and severe clinical conditions. It expresses a number of secreted or cell wall-anchored proteins that modulate...
Silva, Rui D., Sotoca, Roberto, Johansson, Björn, Ludovico, Paula, Sansonetty, Filipe, Silva, Manuel T., ...
Prova tipográfica (In Press)
Björn Johansson, Student Member, Pablo Soldati, Mikael Johansson
Abstract—Network performance can be increased if the traditionally separated network layers are jointly optimized. Recently, network utility maximization has emerged as a powerful framework for...
Distributed Resource Allocation in Networked Systems using Decomposition Techniques (2006)
The Internet and power distribution grids are examples of ubiquitous systems that are composed of subsystems that cooperate using a communication network. We loosely define such systems as networked...
Björn Johansson, Student Member, Mikael Johansson
Abstract — Network performance can be increased if the traditionally separated network layers are jointly optimized. Recently, network utility maximization has emerged as a powerful framework for...
Björn Johansson, Constantin Adam, Mikael Johansson, Rolf Stadler, Björn Johansson, Constantin Adam, ...
Abstract — We investigate the resource allocation problem for large-scale server clusters with quality-of-service objectives, in which key functions, including topology construction, request...
Joint control in dynamic situations (2005)
This thesis focuses on the cooperative and communicative aspects of control over dynamic situations such as emergency management and military operations. Taking a stance in Cognitive Systems...
Joint control in dynamic situations (2005)
This thesis focuses on the cooperative and communicative aspects of control over dynamic situations such as emergency management and military operations. Taking a stance in Cognitive Systems...
Johansson, Björn, Stanworth, Rebecca
This thesis explores the aspects considered by the European Commission to be of key importance to the Future of Manufacturing in Europe. The areas selected for study are Workforce, Research &...
Johansson, Björn, Stanworth, Rebecca
This thesis explores the aspects considered by the European Commission to be of key importance to the Future of Manufacturing in Europe. The areas selected for study are Workforce, Research &...
Generation of gene disruption cassettes with long flanking regions via fusion PCR (2005)
Gombert, Andreas Karoly, Johansson, Björn, Lima, Nelson, Teixeira, J. A., Domingues, Lucília
Primal and dual approaches to distributed cross-layer optimization (2005)
Björn Johansson, Mikael Johansson
Abstract: Several approaches for cross-layer design, e.g., coordinating the traditionally separated layers in wireless networks, have been proposed. However, protocols that are close to achieving the...
Deciding on Using Application Service Provision in SMEs (2004)
The use of external providers for the provision of information and communication technology (ICT) in small and medium-sized enterprises (SMEs) is expected to increase. At the end of the 1990s the...
Deciding on Using Application Service Provision in SMEs (2004)
The use of external providers for the provision of information and communication technology (ICT) in small and medium-sized enterprises (SMEs) is expected to increase. At the end of the 1990s the...
Davidsson, Richard, Johansson, Björn, Passoth, Volkmar, Bengtsson, Martin, Laurell, Thomas, Emnéus, Jenny
A microfluidic flow injection (mFIA) system was employed for handling and monitoring of cell-released products from living cells immobilised on silicon microchips. The dynamic release of glucose and...
Johansson, Björn, Hahn-Hägerdal, Bärbel
Multiple gene expression can be introduced in a yeast strain with using only two markers by means of the two new vectors described, the expression vector pB3 PGK and the CRE recombinase vector pCRE3....
Björn Johansson, Prof Bengt Lennartson, Bengt Lennartson, Björn Johansson, Lars Nyborg, Who Is Lars, ...
• 40 years of experience from papermaking.
2004: A repeatability test for two orientation based interest point detectors (2004)
Björn Johansson, Robert Söderberg
This report evaluates the stability of two image interest point detectors, starpattern points and points based on the fourth order tensor. The Harris operator is also included for comparison....
Feedforward Control in Dynamic Situations (2003)
This thesis proposal discusses control of dynamic systems and its relation to time. Although much research has been done concerning control of dynamic systems and decision making, little research...
Feedforward Control in Dynamic Situations (2003)
This thesis proposal discusses control of dynamic systems and its relation to time. Although much research has been done concerning control of dynamic systems and decision making, little research...
Jeppsson, Marie, Johansson, Björn, Jensen, Peter Ruhdal, Hahn-Hägerdal, Bärbel, Gorwa-Grauslund, Marie F.
Disruption of the ZWF1 gene encoding glucose-6-phosphate dehydrogenase (G6PDH) has been shown to reduce the xylitol yield and the xylose consumption in the xylose-utilizing recombinant Saccharomyces...
Jeppsson, Marie, Träff, Karin, Johansson, Björn, Hahn-Hägerdal, Bärbel, Gorwa-Grauslund, Marie F.
Recombinant Saccharomyces cerevisiae TMB3001, harboring the Pichia stipitis genes XYL1 and XYL2 (xylose reductase and xylitol dehydrogenase, respectively) and the endogenous XKS1(xylulokinase), can...
Rotational Symmetries - a Quick Tutorial (2003)
INTRODUCTION The theory for operators describing rotational symmetries in image regions using orientation information was developed around 1981 by Granlund and Knutsson. It was however first...
Information Structure To Support Discrete Event Simulation In Manufacturing Systems (2003)
Björn Johansson, Joacim Johnsson, Anders Kinnander, S. Chick, P. J. Sánchez, D. Ferrin, ...
Discrete Event Simulation (DES) is ranked among the top three tools for management support. However, it lags in becoming the successful tool in the industry that many experts have predicted. In this...
Patch-duplets for object recognition and pose estimation (2003)
This paper describes a view-based method for object recognition and estimation of object pose in still images. The method is based on feature vector matching and clustering. A set of interest points,...
Patch-duplets for object recognition and pose estimation (2003)
This report describes a view-based method for object recognition and estimation of object pose in still images. The method is based on feature vector matching and clustering. A set of interest...
Computer Vision Using Rich Features - Geometry and Systems (2002)
In this thesis a number of computer vision problems is discussed, in particular we study the problem of view synthesis. The focus is on using complex features to determine the geometry of the scene...
Johansson, Björn, Hahn-Hägerdal, Bärbel
Two new vectors are described, the expression vector pB3 PGK and the CRE recombinase vector pCRE3. The pB3 PGK has a zeocin-selectable marker flanked by loxP sequences and an expression cassette...
Jeppsson, Marie, Johansson, Björn, Hahn-Hägerdal, Bärbel, Gorwa-Grauslund, Marie F
In recombinant, xylose-fermenting Saccharomyces cerevisiae, about 30% of the consumed xylose is converted to xylitol. Xylitol production results from a cofactor imbalance, since xylose reductase uses...
Johansson, Björn, Hahn-Hägerdal, Bärbel
Saccharomyces cerevisiae is able to ferment xylose,when engineered with the enzymes xylose reductase (XYL1) and xylitol dehydrogenase (XYL2). However,xylose fermentation is one to two orders of...
Zaldivar, J., Borges, A., Johansson, Björn, Villas-Bôas, S.G., Nielsen, Jens, ...
Heterologous genes for xylose utilization were introduced into an industrial Saccharomyces cerevisiae, strain A, with the aim of producing fuel ethanol from lignocellulosic feedstocks. Two...
SECURING OWNERSHIP OF INTANGIBLE ASSETS IN A SUBJECT BASED NETWORK (2002)
Utternäs, Annette, Johansson, Björn
Ingen resumé lämnad
Road sign recognition from a moving vehicle (2002)
This project aims to research the current technology for recognising road signs in real-time from a moving vehicle. The most promising technology for intelligent vehicle systems is vision sensors and...
Turn Lost Production into Profit - Discrete Event Simulation Applied on . . . (2002)
Björn Johansson, Jürgen Kaiser, E. Yücesan, J. L. Snowdon, J. M. Charnes
World-class utilization of manufacturing resources is of vital importance to any manufacturing enterprise in the global competition of today. This requirement calls for superior performance of all...
Representing Multiple Orientations in 2D with Orientation Channel Histograms (2002)
The channel representation is a simple yet powerful representation of scalars and vectors. It is especially suited for representation of several scalars at the same time without mixing them up. This...
The aim of the work presented in this thesis is the improvement of xylose fermentation performance of recombinant Saccharomyces cerevisiae strains expressing XYL1 and XYL2 from Pichia stipitis,...
In two prospective, clinical studies the stability of implants and prosthetic constructions were evaluated after three years of loading. In the first study, the implant and the bridge stability of 39...
In two prospective, clinical studies the stability of implants and prosthetic constructions were evaluated after three years of loading. In the first study, the implant and the bridge stability of 39...
On Sparse Associative Networks: A Least Squares Formulation (2001)
This report is a complement to the working document [4], where a sparse associative network is described. This report shows that the net learning rule in [4] can be viewed as the solution to a...
This report describes an idea based on the work in [1], where an algorithm for learning automatic representation of visual operators is presented. The algorithm in [1] uses canonical correlation to...
Multiscale Curvature Detection in Computer Vision (2001)
Björn Johansson, Bjorn Johansson
This thesis presents a new method for detection of complex curvatures such as corners, circles, and star patterns. The method is based on a second degree local polynomial model applied to a local...
This report describes an idea based on the work in [1], where an algorithm for learning automatic representation of visual operators is presented.
Backprojection of Some Image Symmetries Based on a Local Orientation Description (2000)
Some image patterns, e.g. circles, hyperbolic curves, star patterns etc., can be described in a compact way using local orientation. The features mentioned above is part of a family of patterns...
Detecting Rotational Symmetries using Normalized Convolution (2000)
Björn Johansson, Hans Knutsson, Gösta Granlund
Perceptual experiments indicate that corners and curvature are very important features in the process of recognition. This paper presents a new method to detect rotational symmetries, which describes...
Fractal coding by means of local feature histograms (2000)
Per-erik Forssén, Björn Johansson, Per-erik Forssén, Björn Johansson
This report describes an experimental still image coder that grew out of a project in the graduate course “Advanced Video Coding ” in spring 2000. The project has investigated the idea to use...
Fast Selective Detection of Rotational Symmetries using Normalized Inhibition (2000)
Björn Johansson, Gösta Granlund
Abstract. Perceptual experiments indicate that corners and curvature are very important features in the process of recognition. This paper presents a new method to efficiently detect rotational...
Backprojection of Some Image Symmetries Based on a Local Orientation Description (2000)
Some image patterns, e.g. circles, hyperbolic curves, star patterns etc., can be described in a compact way using local orientation. The features mentioned above is part of a family of patterns...
Detecting Rotational Symmetries using Normalized Convolution (2000)
Björn Johansson, Hans Knutsson, Gösta Granlund
Perceptual experiments indicate that corners and curvature are very important features in the process of recognition. This paper presents a new method to detect rotational symmetries, which describes...
Curvature Detection using Polynomial Fitting on Local Orientation (2000)
This report describes a technique to detect curvature. The technique uses local polynomial fitting on a local orientation description of an image. The idea is based on the theory of rotational...
Backprojection of Some Image Symmetries Based on a Local Orientation Description (2000)
Björn Johansson, Bj Orn Johansson
Some image patterns, e.g. circles, hyperbolic curves, star patterns etc., can be described in a compact way using local orientation. The features mentioned above is part of a family of patterns...
Fast Selective Detection of Rotational Symmetries Using Normalized Inhibition (2000)
Björn Johansson, Gösta Granlund
Perceptual experiments indicate that corners and curvature are very important features in the process of recognition. This paper presents a new method to efficiently detect rotational symmetries,...
Johansson, Björn, Halldner, Linda, Dunwiddie, Thomas V., Masino, Susan A., Poelchen, Wolfgang, Giménez-Llort, Lydia, ...
Caffeine is believed to act by blocking adenosine A1 and A2A receptors (A1R, A2AR), indicating that some A1 receptors are tonically activated. We generated mice with a targeted disruption of the...
Johansson, Björn, Christensson, Camilla, Hobley, Timothy, Hahn-Hägerdal, Bärbel
Fermentation of the pentose sugar xylose to ethanol in lignocellulosic biomass would make bioethanol production economically more competitive. Saccharomyces cerevisiae, an efficient ethanol producer,...
Jeppsson, Marie, Johansson, Björn, Hahn-Hägerdal, Bärbel, Gorwa-Grauslund, Marie F.
In recombinant, xylose-fermenting Saccharomyces cerevisiae, about 30% of the consumed xylose is converted to xylitol. Xylitol production results from a cofactor imbalance, since xylose reductase uses...
A1 adenosine receptors mediate hypoxia-induced ventriculomegaly
Turner, Christopher P., Seli, Meltem, Ment, Laura, Stewart, William, Yan, Henglin, Johansson, Björn, ...
Periventricular leukomalacia is characterized by a reduction in brain matter and secondary ventriculomegaly and is a major cause of developmental delay and cerebral palsy in prematurely born infants....
Ribeiro, Gabriela F., Côrte-Real, Manuela, Johansson, Björn
Saccharomyces cerevisiae has been reported to die, under certain conditions, from programmed cell death with apoptotic markers. One of the most important markers is chromosomal DNA fragmentation as...
Johansson, Björn, Halldner, Linda, Dunwiddie, Thomas V., Masino, Susan A., Poelchen, Wolfgang, Giménez-Llort, Lydia, ...
Caffeine is believed to act by blocking adenosine A1 and A2A receptors (A1R, A2AR), indicating that some A1 receptors are tonically activated. We generated mice with a targeted disruption of the...
Johansson, Björn, Christensson, Camilla, Hobley, Timothy, Hahn-Hägerdal, Bärbel
Fermentation of the pentose sugar xylose to ethanol in lignocellulosic biomass would make bioethanol production economically more competitive. Saccharomyces cerevisiae, an efficient ethanol producer,...
Jeppsson, Marie, Johansson, Björn, Hahn-Hägerdal, Bärbel, Gorwa-Grauslund, Marie F.
In recombinant, xylose-fermenting Saccharomyces cerevisiae, about 30% of the consumed xylose is converted to xylitol. Xylitol production results from a cofactor imbalance, since xylose reductase uses...
A1 adenosine receptors mediate hypoxia-induced ventriculomegaly
Turner, Christopher P., Seli, Meltem, Ment, Laura, Stewart, William, Yan, Henglin, Johansson, Björn, ...
Periventricular leukomalacia is characterized by a reduction in brain matter and secondary ventriculomegaly and is a major cause of developmental delay and cerebral palsy in prematurely born infants....
Ribeiro, Gabriela F., Côrte-Real, Manuela, Johansson, Björn
Saccharomyces cerevisiae has been reported to die, under certain conditions, from programmed cell death with apoptotic markers. One of the most important markers is chromosomal DNA fragmentation as...
Lopes, Luísa V, Halldner, Linda, Rebola, Nelson, Johansson, Björn, Ledent, Catherine, Chen, Jian Fan, ...
2-p-(2-carboxyethylphenethylamino-5′-ethylcarboxamidoadenosine) (CGS 21680) is considered the reference compound to study adenosine A2A receptors. However, CGS 21680 binding in the cerebral cortex,...
On the central limit theorem for point process martingales
We give a simple proof of the scalar central limit theorem for point process martingales. The proof is based on a result of Guiasu concerning random time changes. A condition of [`]Lyapunov type' is...
Ethanol/Naltrexone Interactions at the mu-Opioid Receptor. CLSM/FCS Study in Live Cells
Vukojević, Vladana, Ming, Yu, D'Addario, Claudio, Rigler, Rudolf, Johansson, Björn, Terenius, Lars
Quantitative single-molecule imaging by confocal laser scanning microscopy
Vukojević, Vladana, Heidkamp, Marcus, Ming, Yu, Johansson, Björn, Terenius, Lars, Rigler, Rudolf
A new approach to quantitative single-molecule imaging by confocal laser scanning microscopy (CLSM) is presented. It relies on fluorescence intensity distribution to analyze the molecular occurrence...