| 51. |
|
|
| 52. |
- Andersson, Johan, et al.
(författare)
-
New paradigm of transition metal polypyridine complex photochemistry
- 2004
-
Ingår i: Faraday Discussions. - : Royal Society of Chemistry (RSC). - 1364-5498. ; 127, s. 295-305
-
Tidskriftsartikel (refereegranskat)abstract
- Using polarization sensitive ultrafast transient absorption spectroscopy we have studied energy transfer and excited state relaxation pathways in a tetranuclear transition metal [( osmium)( ruthenium)(3)] polypyridine complex. Contrary to the generally accepted picture of transition metal complex photochemistry we find that ultrafast energy transfer ( less than or equal to 60 fs) occurs from the excited singlet MLCT state of the peripheral Ru-chromophores to the central Os-core, in efficient competition with intersystem crossing. Energy transfer between relaxed triplet MLCT states is more than an order of magnitude slower ( 600 fs).
|
|
| 53. |
- Andersson, Johan, et al.
(författare)
-
Ultrafast singlet energy transfer competes with intersystem crossing in a multi-center transition metal polypyridine complex
- 2004
-
Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614. ; 386:4-6, s. 336-341
-
Tidskriftsartikel (refereegranskat)abstract
- Transition metal polypyridine complexes are finding widespread applications within many areas of chemistry. For their light-induced processes, the generally accepted picture is that all function emanates from triplet states because the singlet states initially prepared by light absorption are depopulated via intersystem crossing on the 100-fs time scale, before they are significantly involved in chemical reactions. Here we show that this is not always true. With ultrafast spectroscopy applied to a (ruthenium)(3)-osmium complex we show that transition metal polypyridine complexes can be designed where energy transfer between excited singlet states located on different metal centers efficiently competes with intersystem crossing, thus decreasing population of the lower-lying triplet states and concomitant energy loss. (C) 2004 Elsevier B.V. All rights reserved.
|
|
| 54. |
|
|
| 55. |
|
|
| 56. |
|
|
| 57. |
|
|
| 58. |
|
|
| 59. |
- Andersson, Mikael, et al.
(författare)
-
Gamma-ray track reconstruction using graph neural networks
- 2023
-
Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 1048
-
Tidskriftsartikel (refereegranskat)abstract
- Since the advent of the new generation of germanium detector arrays for low-energy nuclear physics experiments utilizing gamma-ray tracking, the challenges associated with track-reconstruction methods have been extensively studied. In the present work an approach based on recent developments in machine learning was used to address the problem. Here, a graph neural network was constructed and trained on data simulated in Geant4 in order to attempt track reconstruction of gamma rays below 1 MeV in a spherical shell geometry of pure germanium. Using a thick-shell geometry, and simulated data without energy-and position uncertainties the network achieved a reconstruction rate above 80% for complete tracks, and a combined peak-to-total value of 85% for energy spectra with four discrete peaks. For data with added noise, i.e. finite resolution in interaction-point position and energy, the corresponding peak-to-total ratio dropped to 74%. The track reconstruction was stable across multiplicities 1-10 but showed an increased error frequency in the energy range between 50 keV and 250 keV. To specifically study the complication of gamma tracks lost by out -scattering from the detector volume, a thin-shell (9 cm thickness) geometry was used together with a modified version of the GNN framework. By letting the GNN code identify and discriminate the out-scatter events, an improvement of the P/T value from 66% to 75% was found for the packed, noisy data. For the sake of comparison the new GNN model with existing gamma-ray tracking methods, a separate instance of the network was trained on slightly higher energies (up to 1.5 MeV) and multiplicities (up to 15) to evaluate 1.332 MeV photon cascade data in terms of P/T and photo-peak efficiency. The results for this GNN data set, with P/T values at 85% for single tracks and 74% for multiplicity 15, show clear promise when compared to the existing tracking methods.
|
|
| 60. |
|
|
| 61. |
- Andersson, Per M, et al.
(författare)
-
Comparison between physicochemical and calculated molecular descriptors
- 2000
-
Ingår i: Journal of Chemometrics: Special Issue: Proceedings of the SSC6, August 1999, HiT/TF, Norway . Issue Edited by Kim Esbensen. ; 14:5-6, s. 629-42
-
Tidskriftsartikel (refereegranskat)abstract
- It has earlier been proven that measured physicochemical properties are useful in the selection of building blocks for combinatorial chemistry as well as for investigation of the scope and limitations of organic reactions. However, measured physicochemical properties are only available for small subsets of reagents, starting materials or building blocks; therefore it is necessary to use calculated descriptors and it is essential that the descriptors are relevant. The objective was to investigate whether three different descriptor data sets contained similar information about the chemical structure, with the major aim to investigate whether calculated descriptors contain similar information as experimental data. A total of 205 heterogeneous primary amines were characterized using three different data sets of molecular descriptor variables. The first set consisted of four physicochemical variables compiled from the literature and commercially available chemicals in chemical catalogues. From these four descriptors together with molecular weight, three additional descriptors could be calculated, resulting in a total of eight descriptor variables in the first data set. The second data set consisted of 81 calculated molecular descriptor variables relating to size, connectivity, atom count, topology and electrotopology indices. The third data set consisted of 10 semi-empirical variables (AM1). All the calculated variables were generated using the software Tsar 3.11. The descriptor variable sets were compared using principal component analysis (PCA) and partial least squares projections to latent structures (PLS). The following result shows that the different descriptor sets do contain similar latent information and that the different types of calculated variables do correlate well with the experimental data, making them suitable to use for e.g. combinatorial library design.
|
|
| 62. |
- Andersson, Per M, et al.
(författare)
-
Strategies for subset selection of parts of an in-house chemical library
- 2001
-
Ingår i: Journal of Chemometrics. - : Wiley. - 0886-9383. ; 15:4, s. 353-69
-
Tidskriftsartikel (refereegranskat)abstract
- When a company decides to perform biological testing of their in-house library, i.e. compounds which have been synthesized or purchased over the years, it is usually not feasible or desirable to test all of them using e.g. high-throughput screening (HTS). The limitation is the usually high number of compounds to test (104-106) leading to practical limitations and high costs in terms of both material costs and disposal considerations. Therefore it is often desirable to make a selection of which compounds to include in the biological testing. A challenge is how to make this selection in order to cover the structural space of the in-house library as well as possible. Here we present and discuss different selection strategies based mainly on statistical molecular design (SMD). These methods require different prior information about the compounds under investigation, e.g. characterization of the chemical structure, affinity/biological activity data or neither of these. Which method to be used is largely problem-dependent, i.e. the composition and origin of the library, and hence the structural space, are of great importance. Chemical and biological knowledge about the system under investigation should as far as possible be considered when making the final decision on which method to apply.
|
|
| 63. |
- Andersson, Patrik, et al.
(författare)
-
Perception aspects on perspective aircraft displays
- 2003
-
Ingår i: Displays (Guildford). - 0141-9382 .- 1872-7387. ; 24:1, s. 1-13
-
Tidskriftsartikel (refereegranskat)abstract
- This report presents two experiments in the area of perspective aircraft displays. The research focus was to explore the possibilities to understand symbolic and symbol relations in the 3D environment. In the first experiment the subjects' ability to distinguish between five different aircraft symbol shapes were investigated together with the perception of their heading in the 3D space. The perspective used in this experiment was egocentric. In the second experiment the judgment of the spatial relation between an own-ship symbol and a target symbol was investigated. Thus, in this case, the perspective was exocentric and two aspect angles were used for the camera position. Both experiments were carried out in non-dynamic scenarios. The display character was topographic with a superposed grid at the ground surface. The overall conclusion from the experiments is that judgment of direction in 3D presentations is very difficult in these static scenarios. Symbol recognition of 3D pictorial symbols is problematic for complicated symbol shapes as well, depending on different appearances for various symbol headings in the 3D space.
|
|
| 64. |
- Andersson, Per-Åke, 1945-
(författare)
-
Multi-year maintenance optimisation for paved public roads - segment based modelling and price-directive decomposition
- 2007
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- I avhandlingen studeras hur kostnadseffektiva underhålls- (uh-)planer för belagd väg kan genereras, på basis av information om aktuellt vägytetillstånd och funktionella modeller för kostnads- och tillståndsförändringar, delvis utvecklade i samarbete med svenska Vägverket (VV). Tilltänkt användning är på strategisk och programnivå, innan mer detaljerad objektinformation finns att tillgå. Till skillnad från hittills använda modeller, så genereras individuella uh-planer för varje vägsegment (en homogen vägsträcka vad gäller aktuellt beläggningstillstånd och beläggningshistorik), i kontinuerliga tillstånds- och åtgärdsrum. Genom användning av Lagrangerelaxerande optimeringsteknik, så kan de speciella nytto/kostnads-kvot-villkor som VV ålägger varje uh-objekt naturligen hanteras med dualpriser för budgetvillkoren. Antalet vägsegment som konkurrerar om budgetmedlen är vanligtvis stort. Data från VV:s Vägdatabank för Värmland har använts, omfattande ca 9000 vägsegment. Genom den stora datamängden har datorprogrammen implementerats för parallellbearbetning. Under avhandlingsarbetet har projektet beviljats tillgång till Monolith PCklustret vid NSC. För att kunna reducera optimeringskörtiderna har modell- och metodutveckling varit nödvändig. Genom att aggregera vägsegmenten till vägklasser har goda startvärden på dualpriserna erhållits. Genom utvecklingen av en speciell restvärdesrutin har den explicit behandlade tidsperioden kunnat reduceras. Vid lösandet av det duala subproblemet har speciell uppmärksamhet ägnats åt de diskretiseringseffekter som uppstår i metoden dynamisk programmering. En typ av tillämpning avser ett delvägnät, exempelvis en väg. Valideringsstudier har genomförts på väg 63 i Värmland – med lovande men inte tillfredsställande resultat (se nedan). En speciell modell för samordnat uh beaktar stordriftsfördelarna vid samtidig åtgärd på en hel vägsträcka. Den andra huvudtypen av studier gäller ett helt nätverk. Flera metodtyper har tillämpats, både för att lösa de relaxerade optimeringsproblemen och för att generera uhplaner som uppfyller budgetvillkoren. För en anständig diskretisering är körtiderna för hela Värmland mindre än 80 CPU-timmar. Genom en a posteriori primal heuristik reduceras kraven på parallellbearbetning till ett litet PC-kluster. Avhandlingen studerar vidare effekterna av omfördelade budgetmedel samt en övergång till en transparent, stokastisk modell – vilka båda visar små avvikelser från basmodellen.Optimeringsresultaten för Värmland indikerar att budgetnivåer på ca 40% av Värmlands verkliga uh-budget är tillräckliga. Dock saknas viktiga kostnadsdrivande faktorer i denna första modellomgång, exempelvis vissa funktionella prestanda (säkerhet), all miljöpåverkande prestanda (buller etc.) och strukturell prestanda (ex.vis bärighet, som enbart modelleras via ett åldersmått). För ökad tilltro till PMS i allmänhet och optimering i synnerhet, bör avvikelserna analyseras ytterligare och leda till förbättringar vad gäller tillståndsmätning, tillståndseffekt- & kostnadsmodellering samt matematisk modellering & implementering.
|
|
| 65. |
|
|
| 66. |
- Andersson, Staffan, 1969-, et al.
(författare)
-
Controlling Corruption in the Public Sector
- 2009
-
Ingår i: Scandinavian Political Studies. - : Blackwell Publishing. - 0080-6757 .- 1467-9477. ; 32:1, s. 45-70
-
Tidskriftsartikel (refereegranskat)abstract
- Much of the literature on political corruption is based on indices such as the ones presented by Transparency International, but the reliability and validity of these indices are questionable. The main alternative approach – qualitative case studies – often lacks a theoretical framework allowing for systematic empirical analysis. To remedy this shortcoming, this article places qualitative case studies in the framework of principal-agent theory. The cases comprise two Swedish county councils (regional governments), both of which reorganised their administrations in similar ways in the 1990s. One experienced corruption scandals, but the other did not. In comparing them, the article links the propensity for corruption to institutional design – in particular, the mechanisms of delegation and control.
|
|
| 67. |
|
|
| 68. |
- Andersson, Staffan, 1969-
(författare)
-
Corruption in Sweden : Exploring Danger Zones and Change.
- 2002
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In this dissertation I study corruption in the public sector in Sweden, a country which the literature regards as having few corruption problems. Sweden is therefore classified as a “least corrupt” case, and such countries are seldom studied in corruption research. My work is thus an effort to fill a gap in the literature. This research is also motivated by a conviction that such a case provides a fertile ground for studying danger zones for corruption. For example, this work allows me to explore how institutional and contextual changes impact on corruption and danger zones. Though the main focus of this work is on Sweden, I also have comparative ambitions. First, I locate Sweden in a cross-national context. I then study corruption in Sweden using a comparative methodology and with an eye to international comparisons. I apply a combined theoretical approach and a multi-method investigation based on several empirical sources and both quantitative and qualitative techniques. This research strategy enables me to capture a phenomenon (corruption) that is more difficult to identify in countries with relatively few obvious corruption scandals than it is in countries in which the phenomenon has traditionally been studied. Regarding danger zones for corruption, the results show that some of the zones identified in the international literature, such as public procurement, are also important in Sweden. For the Swedish case, my empirical research also identifies the types of corruption that occur, perceptions of danger zones and corruption, how corruption changes over time, and how corruption is fought. With regard to the latter, one conclusion is that ingrained (male) sub-cultures can be problematic and may need to be opened up using a combination of measures like promoting a more heterogeneous group of politicians, creating more transparent proceedings in decision groups and conducting more effective audits. The research also highlights the importance of adapting control measures to existing structures of delegation. For example, if delegation arrangements are changed to improve efficiency and cut costs, new accountability measures may be necessary. In general, delegation and control structures should be structured in such a way as to make the cost of shirking quite high. Finally, based on the results of this multi-method investigation, I conclude that one avenue for further corruption research is to connect our knowledge of danger zones to what we know about mechanisms effecting corrupt behaviour, and then to apply this to discussions of new models of the politics of management in multi-level governance.
|
|
| 69. |
- Andersson, Sven, 1968, et al.
(författare)
-
High Temperature Corrosion and Dioxin Abatement Using Sulfur Recirculation in a Waste-to-Energy Plant
- 2019
-
Ingår i: Detritus. - : Eurowaste SRL. - 2611-4127 .- 2611-4135. ; 5:Mars, s. 92-98
-
Tidskriftsartikel (refereegranskat)abstract
- Sulfur Recirculation is a novel technique for reducing the high temperature corrosion and dioxin formation in Waste-to-Energy plants by recirculating sulfur from the wet flue gas cleaning back to the boiler. This is achieved by separating SO2 from the flue gas in a wet scrubber downstream of a HCl scrubber. H2O2 dosed into the scrubber reacts with SO, in the gas and produces a 15-25 wt% H2SO4 solution, which is injected into the boiler producing SO2, thus creating a sulfur loop. The first permanent full-scale installation has been in operation in one of the two commercial full-scale Waste-to Energy boilers at Maabjerg Energy Center (MEC) in Denmark since October 2016. The recirculated sulfur increased the gas concentration of SO2 by a factor of 2-3 in the boiler, thereby enhancing the sulfation of corrosive alkali chlorides to non-corrosive alkali sulfates. The chlorine content of the superheater deposits decreased by 85%, and the superheater corrosion rate decreased by 40-90% during the first year of operation. The dioxin concentrations upstream of the dioxin removal system decreased by 75% and the dioxin emissions decreased by 72% with Sulfur Recirculation in operation. Furthermore, the sulfate containing effluent water was almost eliminated due to the increased sulfation of the ashes and deposits.
|
|
| 70. |
|
|
| 71. |
|
|
| 72. |
- Andersson Sundén, Erik, et al.
(författare)
-
An assessment of nitrogen concentrations from spectroscopic measurements in the JET and ASDEX upgrade divertor
- 2019
-
Ingår i: Nuclear Materials and Energy. - : Elsevier. - 2352-1791. ; 18, s. 147-152
-
Tidskriftsartikel (refereegranskat)abstract
- The impurity concentration in the tokamak divertor plasma is a necessary input for predictive scaling of divertor detachment, however direct measurements from existing tokamaks in different divertor plasma conditions are limited. To address this, we have applied a recently developed spectroscopic N II line ratio technique for measuring the N concentration in the divertor to a range of H-mode and L-mode plasma from the ASDEX Upgrade and JET tokamaks, respectively. The results from both devices show that as the power crossing the separatrix, P-sep, is increased under otherwise similar core conditions (e.g. density), a higher N concentration is required to achieve the same detachment state. For example, the N concentrations at the start of detachment increase from approximate to 2% to approximate to 9% as P-sep, is increased from approximate to 2.5 MW to approximate to 7 MW. These results tentatively agree with scaling law predictions (e.g. Goldston et al.) motivating a further study examining the parameters which affect the N concentration required to reach detachment. Finally, the N concentrations from spectroscopy and the ratio of D and N gas valve fluxes agree within experimental uncertainty only when the vessel surfaces are fully-loaded with N.
|
|
| 73. |
- Andersson, Torbjörn
(författare)
-
1900-talets fotbollshuvudstad
- 2019
-
Ingår i: Idrott. - : Carlsson Bokförlag. - 9789173319485 ; , s. 127-169
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 74. |
- Andersson, Torbjörn, et al.
(författare)
-
A diagnosis of the commercial immaturity of Swedish club football
- 2011
-
Ingår i: Soccer & Society. - : Taylor & Francis. - 1466-0970 .- 1743-9590. ; 12:6, s. 754-773
-
Tidskriftsartikel (refereegranskat)abstract
- This article presents a critical diagnosis of Swedish club football, in light of its current shortcomings on the European football market, and in comparison with the other Scandinavian leagues. The article highlights the commercial immaturity of the Swedish clubs, in addition to the context of historical and cultural values, restricted association forms, the emphasis on internationalism, the fixed tax system, the standards of the arenas, the lack of patronage and the migration of talents. The analysis closes with a depressed depiction of Swedish club football, in relation to development in Europe, as well as in Scandinavia. Still, in a dialectical reasoning this situation is, finally, evaluated as a valuable development in relation to fairness, internal sports logics as well as ecological values.
|
|
| 75. |
|
|
| 76. |
- Andersson, Torbjörn
(författare)
-
Aesthetic Flexibility : Modularity of Visual Form in Product Portfolios and Branded Products
- 2016
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The increase in competition amongst companies that produce complex or large product portfolios has created a need to utilise modularity strategies not only to flexibly manage technical complexity in a costeffective manner but also for visual appearance. This research aims to understand how the visual appearance of products is affected by modular product development strategies. Specifically, the aim is to understand how such strategies induce constraints and generate possibilities for management of visual appearance in the design process.Five studies have been conducted during the course of this licentiate thesis. Two were conducted with professionals and students in design, while the remaining three are theoretical studies based on findings in the literature, theory building, and experimental research. The goal has been to investigate how designers work when they are put to the task of changing and developing the designs of complex products that are part of a portfolio. The challenge has been to study what suitable strategies exist that manage complex products and product brands, then investigate how these influence designers’ practices.The first study examined how coherence towards a product category influences the design of new products. The outcome of the study was a method to explore visual coherence and diversity in the appearance of a product category.The remaining four studies investigated how modularity, brand management and the redesign of product portfolios influence a design process. The second study described a design phenomenon known as aesthetic flexibility, which was further explored in studies three and five. The outcome from these studies was a proposal for four aesthetic flexibility strategies.The fourth study investigated in what way portfolio extension strategies found in brand management and design research are related, and how such strategies influence aesthetic flexibility. The results from study four were illustrated as a model.The main contribution of this work is the phenomenon of ‘aesthetic flexibility’, which helps understand the factors that influence designers when working with branded modular products. Understanding visual flexibility serves as a starting point in further investigations of how different development strategies affect the possibilities for visual product design.The findings of this work serve to illustrate and explain a complex and multi-facetted design phenomenon which many designers manage more or less intuitively today, thus advancing academics’, teachers’ and professional designers’ understanding of the field.
|
|
| 77. |
- Andersson, Torbjörn, 1976-
(författare)
-
Aesthetic Flexibility : In Industrial Design Practice
- 2021
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Competition among companies that produce complex or large product portfolios has created a need to use modularity strategies not only to flexibly manage technical complexity in a cost-effective manner but also to produce visually appealing products. This research aims to understand how the visual appearance of products is affected by modular product development strategies and creates coherent product brands. Thus, this study examines the intersection of design aesthetics, product portfolio management, product brand management, and design management. Specifically, this study aims to understand how such strategies constrain and generate possibilities when the industrial design process concerns itself with visual appearance. The main research approach has been qualitative multi-case methodology (Miles et al, 2014; Eisenhardt, 1989) and design theory building (Chakrabarti and Blessing, 2016) that collects data through interviews, experimentation, and theoretical studies based on findings in the literature. Sixteen face-to-face interviews were conducted with design vice presidents, senior designers, and senior design engineers at five Swedish manufacturers from the automotive, MedTech, consumer goods, commercial vehicles, and materials handling industries. This approach has resulted in the description of three theoretical models and a design method, product gist, for investigating prototypicality in a product category. Aesthetic flexibility reflects the requirement that under certain circumstances an industrial designer has to plan for future (as yet unknown) changes in a design. Each of the three theoretical models has a different focus: one model describes three ways manufacturing companies organise a strategic in-house design function; one model describes how design decisions are made on a general level through an intuitive and knowledge-based judgment process; and one model describes the strategies a manager needs to consider when developing an existing product portfolio and how the strategies influence industrial design practice. Understanding visual flexibility serves as a starting point for further investigations of how development strategies affect visual product design. This understanding provides industrial designers insight into how they can develop product systems that share design components across product lines to promote brand identity. The findings of this work illustrate and explain a complex and multi-facetted design phenomenon that many designers manage more or less intuitively today; therefore, this study advances the understanding of the field for academics, teachers, and professional designers.
|
|
| 78. |
- Andersson, Torbjörn, et al.
(författare)
-
Aesthetic Flexibility in the Management of Visual Product Branding
- 2015
-
Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 3, s. 2191-2198
-
Tidskriftsartikel (refereegranskat)abstract
- This paper will investigate the strategic design decision-making of an in-house designer in a company with a large product portfolio, with respect to how designers plan for future visual alterations of the product. In-house designers have to think strategically about the creation of recognition and differentiation through design because they influence the company's overall strategies. Therefore, while balancing aesthetic and semiotic qualities of the product, designers have to consider current as well as future needs for recognition and product differentiation. The ability to do so is affected by cost and brand positioning strategy. An exploratory study was setup to investigate what design strategies could be found in an industrial design team employed by a company. The study exposed how in-house designers could strategically incorporate aesthetic flexibility in product parts in order to create opportunities for faster facelifts or redesigns. The importance of managing carry-over details in larger product portfolios was also discovered. To carry over parts from different products is an important way for a company to save money, development time and at the same time increase brand recognition through repetition. Carry-over can be an aid to enhance visual recognition, but it can also be a hindrance when the designer needs to create differencing design values. Most products have a lifespan before they need to be updated or redesigned, which depends on the competition in a product segment. This makes it extra important for designers to have an understanding of when to incorporate carry-over details and when not to. A model was created to describe how carry-over details, design cues and aesthetic flexibility could be managed in a product portfolio. The model is based on Rune Monö’s works and brand management literature, with an emphasis on the brand positioning framework of Point of Difference, Point of Parity and brand extension by Keller et al.
|
|
| 79. |
- Andersson, Torbjörn
(författare)
-
Alcohol and the History of Swedish Football
- 2005
-
Ingår i: Sport and Substance Use in the Nordic Countries. - : Association for Canadian Studies.
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 80. |
|
|
| 81. |
|
|
| 82. |
- Andersson, Torbjörn
(författare)
-
Approximation of procedural law in Europe
- 2003
-
Ingår i: Procedural Laws in Europe. - : Maklu Publishers, Antwerp. - 9062158811 ; , s. 472-
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 83. |
|
|
| 84. |
- Andersson, Torbjörn
(författare)
-
Avhandling om pojkfotboll
- 2003
-
Ingår i: Idrott, historia & samhälle. - : Svenska idrottshistoriska föreningen. - 0280-2775. ; :SVIF-nytt, s. 133-136
-
Recension (övrigt vetenskapligt/konstnärligt)abstract
- Recension av Jesper Fundbergs avhandling: Kom igen, gubbar! Om pojkfotboll och maskuliniteter, 2003 (ISBN: 91-7203-513-7)
|
|
| 85. |
|
|
| 86. |
- Andersson, Torbjörn
(författare)
-
Bandy v. ice hockey in Sweden
- 2020
-
Ingår i: Sport in Society. - : Taylor & Francis. - 1743-0437 .- 1743-0445. ; 23:3, s. 361-376
-
Tidskriftsartikel (refereegranskat)abstract
- In 1920, the year ice hockey was introduced to Sweden in connection with the Olympic Games in Antwerp, the traditional British bandy was already a well established team sport on ice in the country. In the early 1900s it had become popular among the upper classes, both men and women, since its deep connection with nature applied to the time’s sense of nostalgia. The Swedish male bandy cup final, which was first played in 1907, is still the country’s oldest large-scale annual sports event. In the press, comparisons were constantly made between the two sports and bandy and ice hockey were seen as contrasts. This resulted in bandy being regarded as truly Swedish and part of the native culture. Concurrently, the sport spread to the working people in Sweden’s rural manufacturing towns while the capital Stockholm established itself as the centre for ice hockey. Elaborating on Allen Guttmann’s theories on modernization, ice hockey’s higher degree of modernity is presented. Adjusting to the modern world was a struggle for bandy and therefore followers of ice hockey predicted its early demise. Still it survived, however surrounded by an even stronger atmosphere of nature-centred nostalgia. The increasingly Americanized sport of ice hockey, on the other hand, became the main player in the growing commercialization of Swedish sport.
|
|
| 87. |
|
|
| 88. |
|
|
| 89. |
|
|
| 90. |
- Andersson, Torbjörn
(författare)
-
Concepts and Algorithms for Non-Linear System Identifiability
- 1994
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Recently, commutative algebra and differential algebra have come to use as mathematical tools for solving problems in automatic control. We will use these tools to answer questions regarding identifiability for models given as a set of differential polynomials. A constructive algorithm, Ritt's algorithm, has been modified for this specific situation. Furthermore, comparisons between Ritt's algorithm and Buchberger's algorithm, to answer the identifiability question when the model structures are given in state space form, are performed. The basic problem is that the computational complexity rapidly increases with the problem size. We examine various ways to simplify the computations in this respect, but it must also be stressed that the complexity increase is inherent in the problem.In identification from a deterministic point of view an algorithm is said to be robustly convergent if the true system is regained when the noise level tends to zero. In this thesis we introduce a concept close to this performance measure; robust global identifiability. A model structure, i.e., a smoothly parameterized set of models, is said to be robustly globally identifiable if there exist an identification algorithm such that the true parameters are regained when the noise level tends to zero. In this thesis we show that global identifiability implies robust global identifiability when the considered model structure is a characteristic set of differential polynomials. This means that any model structure with parameters, that can be uniquely estimated from data has this robustness property.Finally, a method for estirnation of residence time in continuous flow systems with varying dynamics is discussed. By resampling, i.e., choosing time instants different from the given sampling instants, and interpolation between measured data points, we obtain a continuous fl.ow system with constant residence time expressed in a new resampled time vector. We assume that the fiow patterns in the systems are invariant. The new data set is then used for identification of parameters in a chosen model structure. From the identified model, the residence time is readily calculated and a procedure for that is briefly described. The presented method is readily extended to enable use in recursive identification. In that case the modified recursive identification method is an improvement of the tracking ability compared to an ordinary recursive routine.
|
|
| 91. |
- Andersson, Torbjörn
(författare)
-
Den digitala röntgenavdelningen
- 2008
-
Ingår i: Radiologi. - Lund : Studentlitteratur. - 9789144038872 ; , s. 125-134
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 92. |
|
|
| 93. |
- Andersson, Torbjörn
(författare)
-
Den svenska fotbollens glokaliseringsprocess
- 2012
-
Ingår i: Kampen om tribunen. - : Akademika forlag. - 9788251929325 - 8251929326 ; , s. 69-88
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 94. |
- Andersson, Torbjörn, 1976-, et al.
(författare)
-
Desirability in the development of In-Car Infotainment Systems
- 2011
-
Ingår i: Workshop: User Experience in Cars.
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper describes a workflow for designing experiences whileinteracting with an advanced driver assistant system. Future driver assistancesystems that utilize sensors and Car2X-communication in order to detect threatsin the car environment can help the driver to avoid collisions. To increase theacceptance of such a system, the interaction between the driver and the systemshould be able to generate positive experiences. To generate those experiences,a story-based design workflow was used. Concepts created with this workflowshould be able to address specific psychological needs of the driver. Theimplementation of this workflow revealed different schemes of positiveexperiences during driver interaction in critical situations.
|
|
| 95. |
|
|
| 96. |
|
|
| 97. |
|
|
| 98. |
- Andersson, Torbjörn
(författare)
-
Domstolsskapad rätt och retroaktivitet
- 2001
-
Ingår i: Tidskrift utgiven av juridiska föreningen Finland. - 0040-6953. ; , s. 164-178
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 99. |
|
|
| 100. |
- Andersson, Torbjörn, et al.
(författare)
-
Effects of Interferon on Tumor Tissue Content in Liver Metastases of Human Carcinoid Tumors
- 1990
-
Ingår i: Cancer Research. - 0008-5472 .- 1538-7445. ; :50, s. 3413-3415
-
Tidskriftsartikel (refereegranskat)abstract
- In 21 patients ultrasound-guided cutting biopsies, from carcinoid metastases of the liver, were taken before and after therapy with α-interferon. Each biopsy was examined under light microscopy and the amount of tumor tissue and connective tissue was quantified and then correlated to objective response to interferon therapy. A significant reduction of the amount of tumor tissue, in spite of unaltered metastatic size and a corresponding increase in connective tissue, was seen after interferon therapy. A more pronounced reduction of tumor tissue occurred after long-term interferon therapy. A positive correlation between objective therapy response and tumor tissue reduction was also present. Patients responding poorly, or not at all, to therapy did not show any significant decrease in tumor tissue. Since treatment with immune response modifiers is expected to increase in the near future, it is important to choose the right investigations for therapy monitoring, and since all patients in this investigation had unchanged tumor size on repeated radiological examinations, it is obvious that microscopic examination of core biopsies is a better method for evaluating effects of long-term therapy than tumor size measurement with radiological techniques. Further, the results may indicate that interferon exerts a cytotoxic effect on carcinoid tumor cells in vivo.
|
|
