Change search
Refine search result
1234567 1 - 50 of 1282
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the 'Create feeds' function.
  • 1. Abata, E.
    et al.
    Abdallah, J. M.
    Addy, T. N.
    Adragna, P.
    Aharrouche, M.
    Ahmad, A.
    Akesson, T. P. A.
    Aleksa, M.
    Alexa, C.
    Anderson, K.
    Anghinolfi, F.
    Antonaki, A.
    Arabidze, G.
    Arik, E.
    Baker, O. K.
    Banfi, D.
    Baron, S.
    Beck, H. P.
    Belhorma, B.
    Benchekroun, D.
    Benjamin, D. P.
    Benslama, K.
    Kuutmann, E. Bergeaas
    Bertelsen, H.
    Binet, S.
    Biscarat, C.
    Boldea, V.
    Bondarenko, V. G.
    Boonekamp, M.
    Bosman, M.
    Bourdarios, C.
    Chromek, D. Burckhart
    Bychkov, V.
    Callahan, J.
    Calvet, D.
    Canneri, M.
    Garrido, M. Capeans
    Caprini, M.
    Sas, L. Cardiel
    Carli, T.
    Carminati, L.
    Carvalho, J.
    Cascella, M.
    Castillo, M. V.
    Catinaccio, A.
    Sforza, M. Cavalli
    Cavalli, D.
    Cavasinni, V.
    Cetin, S. A.
    Chen, H.
    Cherkaoui, R.
    Chevallier, F.
    Ciobotaru, M.
    Citterio, M.
    Cleland, B.
    Cogneras, E.
    Muino, P. Conde
    Consonni, M.
    Constantinescu, S.
    Cornelissen, T.
    Radu, A. Corso
    Costa, G.
    Cwetanski, P.
    Da Silva, D.
    DAM, M.
    Danielsson, H. O.
    Dannheim, D.
    Davidek, T.
    De, K.
    Defay, P. O.
    Dekhissi, B.
    Del Peso, J.
    Delmastro, M.
    Del Prete, T.
    Derue, F.
    Di Ciaccio, L.
    Di Girolamo, B.
    Dita, S.
    Dittus, F.
    Djama, F.
    Djobava, T.
    Dobson, M.
    Dolgoshein, B. A.
    Dotti, A.
    Drake, G.
    Dressnandt, N.
    Driouchi, C.
    Ebenstein, W. L.
    Eerola, P.
    Efthymiopoulos, I.
    Egorov, K.
    Eifert, T. F.
    El Kacimi, M.
    Etienvre, A. I.
    Fabich, A.
    Fakhr-Edine, A. I.
    Fanti, M.
    Farbin, A.
    Farthouat, P.
    Fassouliotis, D.
    Fayard, L.
    Febbraro, R.
    Fedin, O. L.
    Fenyuk, A.
    Ferrari, R.
    Ferreira, B. C.
    Ferrer, A.
    Filippini, G.
    Fournier, D.
    Francavilla, P.
    Francis, D.
    Froeschl, R.
    Froidevaux, D.
    Fullana, E.
    Gadomski, S.
    Gagnon, P.
    Gameiro, S.
    Garcia, R.
    Ghodbane, N.
    Giakoumopoulou, V.
    Giangiobbe, V.
    Giokaris, N.
    Glonti, G.
    Gollub, N.
    Comes, A.
    Gomez, M. D.
    Gonzalez, V.
    Gorini, B.
    Goujdamiav, D.
    Grahn, K. J.
    KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
    Grenier, P.
    Grigalashvili, N.
    Grishkevich, Y.
    Gruwe, M.
    Guicheney, C.
    Gupta, A.
    Haeberli, C.
    Hajduk, Z.
    Hakobyan, H.
    Hance, M.
    Hansen, P. H.
    Harvey, A., Jr.
    Correia, A. Henriques
    Hervas, L.
    Higon, E.
    Hoffman, J.
    Hostachy, J. Y.
    Hruska, I.
    Hubaut, F.
    Hulsbergen, W.
    Hurwitz, M.
    Iconomidou-Fayard, L.
    Jen-La Plante, I.
    Johansson, P. D. C.
    Jon-And, K.
    Joos, M.
    Jorgensen, S.
    Kaczmarska, A.
    Kado, M.
    Karyukhin, A.
    Kataoka, M.
    Kayumov, F.
    Kazarov, A.
    Keener, P. T.
    Kekelidze, G. D.
    Kerschen, N.
    Khoriauli, G.
    Khramov, E.
    Khristachev, A.
    Khubua, J.
    Kittelmann, T. H.
    Klinkby, E.
    Koffas, T.
    Kolos, S.
    Konovalov, S. P.
    Kopikov, S.
    Korolkov, I.
    Kovalenko, S.
    Kowalski, T. Z.
    Kruger, K.
    Kramarenko, V.
    Kudin, L. G.
    Kulchitsky, Y.
    Lafaye, R.
    Univ Savoie, LAPP, CNTS IN2P3, Annecy Le Vieux, France.
    Laforge, B.
    Lampl, W.
    Lanni, F.
    Laplace, S.
    Le Bihan, A. C.
    Lechowski, M.
    Ledroit-Guillon, F.
    Lehmann, G.
    Leitner, R.
    Lelas, D.
    Liang, Z.
    Lichard, P.
    Lokajicek, M.
    Louchard, L.
    Loureiro, K.
    Lucotte, A.
    Luehring, F.
    Lundberg, B.
    Lund-Jensen, Bengt
    KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
    Ma, H.
    Mackeprang, R.
    Maio, A.
    Maleev, V. P.
    Malek, F.
    Maneira, J.
    Mandelli, L.
    Mazzanti, M.
    Manousakis, A.
    Mapelli, L.
    Marques, C.
    Martin, F.
    McFarlane, K. W.
    Mchedlidze, G.
    McPherson, R.
    Meirosu, C.
    Meng, Z.
    Miagkov, A.
    Mialkovski, V.
    Milstead, D.
    Minashvili, I.
    Mindur, B.
    Mitsou, V. A.
    Monnier, E.
    Morozov, S. V.
    Mosidze, M.
    Mouraviev, S. V.
    Munar, A.
    Nadtochi, A. V.
    Negri, A.
    Nemecek, S.
    Nessi, M.
    Nesterov, S. Y.
    Newcomer, F. M.
    Nikitine, I.
    Nikolic-Audit, I.
    Ogren, H.
    Oh, S. H.
    Oleshko, S. B.
    Olszowska, J.
    Onofre, A.
    Aranda, C. Padilla
    Paganis, S.
    Pallin, D.
    Pantea, D.
    Paolone, V.
    Parsons, J.
    Pasqualucci, E.
    Passmore, M. S.
    Patrichev, S.
    Peez, M.
    Reale, V. Perez
    Perini, L.
    Peshekhonov, V. D.
    Petersen, J.
    Petersen, T. C.
    Petti, R.
    Pilcher, J.
    Pina, J.
    Pinto, B.
    Podlyski, F.
    Poggioli, L.
    Poveda, J.
    Pralavorio, P.
    Pribyl, L.
    Price, M. J.
    Prieur, D.
    Puigdengoles, C.
    Puzo, P.
    Rajagopalan, S.
    Rembser, C.
    Ridel, M.
    Riu, I.
    Roda, C.
    Rohne, O.
    Romaniouk, A.
    Rousseau, D.
    Ruiz, A.
    Rusakovich, N.
    Rust, D.
    Ryabov, Y. F.
    Ryjov, V.
    Salto, O.
    Salvachua, B.
    Sanchis, E.
    Rios, C. Santamarina
    Santoni, C.
    Saraiva, J. G.
    Sarri, F.
    Sauvage, G.
    Says, L. P.
    Schaefer, M.
    Schegelsky, V. A.
    Schlager, G.
    Schlereth, J.
    Schmitt, C.
    Schwemling, P.
    Schwindling, J.
    Seixas, J. M.
    Seliverstov, D. M.
    Serin, L.
    Shalanda, N.
    Shin, T.
    Shmeleva, A.
    Silva, J.
    Simion, S.
    Simonyan, M.
    Sloper, J. E.
    Smirnov, S. Yu.
    Smirnova, L.
    Solans, C.
    Solodkov, A.
    Solovianov, O.
    Soloviev, I.
    Sosnovtsev, V. V.
    Spano, F.
    Speckmeyer, P.
    Stancu, S.
    Stanek, R.
    Starchenko, E.
    Straessner, A.
    Suchkov, S. I.
    Suk, M.
    Szczygiel, R. R.
    Tarrade, F.
    Tartarelli, F.
    Tas, P.
    Tayalati, Y.
    Teuscher, R.
    Thioye, M.
    Tikhomirov, V. O.
    Tisserant, S.
    Torres, J.
    Tremblet, L.
    Tsiareshka, P.
    Tsiskaridze, V.
    Unal, G.
    Unel, G.
    Usai, G.
    Valero, A.
    Valkar, S.
    Valls, J. A.
    Van Berg, R.
    Vandelli, W.
    Vannucci, F.
    Vartapetian, A.
    Vassilakopoulos, V. I.
    Vassilieva, L.
    Vazeille, F.
    Vetter-Cole, Y.
    Vichou, I.
    Vinogradov, V.
    Vivarelli, I.
    Volpi, M.
    Wang, C.
    Werner, P.
    Wheeler, S.
    Wiesmann, M.
    Wilkens, H.
    Williams, H. H.
    Wingerter-Seez, I.
    Yasu, Y.
    Zaitsev, A.
    Zenin, A.
    Zenis, T.
    Zenonos, Z.
    Zhang, H.
    Zhou, N.
    Study of energy response and resolution of the ATLAS barrel calorimeter to hadrons of energies from 20 to 350 GeV2010In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 621, no 1-3, 134-150 p.Article in journal (Refereed)
    Abstract [en]

    A fully instrumented slice of the ATLAS detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. In this paper, the results of the measurements of the response of the barrel calorimeter to hadrons with energies in the range 20-350 GeV and beam impact points and angles corresponding to pseudo-rapidity values in the range 0.2-0.65 are reported. The results are compared to the predictions of a simulation program using the Geant 4 toolkit. (C) 2010 Published by Elsevier B.V.

  • 2. Abbasi, Saeed
    Utilizing the integrated six sigma and lean methodology2008Conference paper (Other academic)
  • 3.
    Abella, Tricia Jennifer
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    The Creative Approach to Vanguard Projects2011Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    A vanguard project is the firm’s entrepreneurial vehicle for exploring opportunities, creating new products, services or markets. This type of projects requires flexibility and innovation to thrive. In this regard, a creative approach to project management is proposed for the successful execution of such projects. This creative approach is summarized in a framework that consists of two main components – flexible planning and creative climate.

    The Central Services project, a vanguard in telecommunications, was used to benchmark the creative project management framework to the current project management methodology of the IT department of TIWS. Results show that there is a gap between the framework and the status quo. Moreover, the Central Services project is not efficiently and effectively managed, therefore, resulting to project delays which consequentially lead to negative company revenues. This reality strengthens the proposition that vanguard projects should be managed differently; hence, the birth of creative project management.

  • 4. Abou-Zleikha, Mohamed
    et al.
    Székely, Eva
    University College Dublin, Ireland.
    Cahill, Peter
    Carson-Berndsen, Julie
    Multi-level exemplar-based duration generation for expressive speech synthesis2012In: Proceedings of Speech Prosody, 2012, Vol. 2012Conference paper (Refereed)
    Abstract [en]

    The generation of duration of speech units from linguistic in- formation, as one component of a prosody model, is consid- ered to be a requirement for natural sounding speech synthesis. This paper investigates the use of a multi-level exemplar-based model for duration generation for the purposes of expressive speech synthesis. The multi-level exemplar-based model has been proposed in the literature as a cognitive model for the pro- duction of duration. The implementation of this model for dura- tion generation for speech synthesis is not straightforward and requires a set of modifications to the model and that the linguis- tically related units and the context of the target units should be taken into consideration. The work presented in this paper implements this model and presents a solution to these issues through the use of prosodic-syntactic correlated data, full con- text information of the input example and corpus exemplars. 

  • 5.
    Abraham, Jonatan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Industrial Ecology.
    Strand, Anna
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Industrial Ecology.
    Reseavdrag: En analys av ett arbetsmarknadspolitiskt styrmedel ur ett hållbarhetsperspektiv2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The ability to make tax deductions on travel expenses have been present in Sweden since the late 1920s. The main purpose of the state subsidy has been to improve the mobility in the label market. However, in recent years there has been a heated debate as to if the subsidy is truly socio-economically sustainable or not. The favoritism of car users has also made the matter a question of ecological sustainability.

    The aim of this essay is to analyse and provide general knowledge of the swedish system of deductible travel expenses. The text is divided into four major parts:

    • A litterature review presenting the history of the subsidy, previous research, and the current political debate.
    • A questionnaire survey where the general public’s opinion of tax-deductible travel expenses is examined. 
    • A discussion of possible adjustments of the different parameters of the system, where the most optimal ammendment is chosen
    • An analysis of 3 different scenarios; keeping the current system, using the ammended system obtained in the calibration, and removing the system.

    From the results we could conclude that an ammended system would be noticeably more socio-economically viable and ecologically sustainable, compared with the current system. However, a complete removal of the system would be the most optimal. In addition, the questionnaire surveys results shows that the public is mostly positive to travel deductions. However, it was apparent that the views of many could shift completely, when presenting facts.

  • 6.
    Abrahamsson, Anna-Carin
    KTH, School of Technology and Health (STH).
    Den fysiska arbetsmiljön i förskolan: utveckling, användning och granskning av en riskbedömningsmodell2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The occupational environment in preschool is becoming increasingly important. Occupational injury statistics show an increased incidence of illness among employees in education, health and care. Before action can be taken to improve the working environment, a careful assessment must be made and an action plan created. To include all possible components requires a comprehensive approach. Mapping of the physical work in Hudiksvall Municipality at all preschools provides a means by which to get an overall picture of risk areas within the preschool staff work environment.

    The aim of this work is to describe how the risk assessment model was developed and used with the ambition that it can be used in other municipalities. The model has been tested in Hudiksvall, on two occasions, in 2005 and 2010. The findings from the survey in 2010 are reported here and a comparison with 2005 is made.

    The risk assessment model is based on a survey with open questions for preschool staff combined with observation and assessment of ergonomics and safety engineer of 11 risk areas within the physical environment of the pre-school.

    The results of the survey give a clear picture of current health risks and can be used as a basis for the development of pre-school activities as well as improved maintenance of the municipal buildings. The results have also been communicated to the individual pre-schools to demonstrate their particular areas of risk.

    The combination of survey and professional assessment of several risk areas has been shown to enable a quick identification of possible causes of illness among pre-school staff. To report both positive and negative environmental factors has been an advantage. The clear method of reporting has facilitated decision-making on what if any actions to take. There is a continuing need to develop this and other instruments for the work environment survey of schools, health and social care.

  • 7.
    Abrehdary, Majid
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Satellite Positioning.
    Sjöberg, Lars E.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Satellite Positioning.
    Bagherbandi, Mohammad
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Satellite Positioning.
    Modelling Moho depth in ocean areas based on satellite altimetry using Vening Meinesz–Moritz’ method2016In: Acta Geodaetica et Geophysica Hungarica, ISSN 1217-8977, E-ISSN 1587-1037, Vol. 51, no 2, 137-149 p.Article in journal (Refereed)
    Abstract [en]

    An experiment for estimating Moho depth is carried out based on satellite altimetryand topographic information using the Vening Meinesz–Moritz gravimetric isostatichypothesis. In order to investigate the possibility and quality of satellite altimetry in Mohodetermination, the DNSC08GRA global marine gravity field model and the DTM2006 globaltopography model are used to obtain a global Moho depth model over the oceans with aresolution of 1 x 1 degree. The numerical results show that the estimated Bouguer gravity disturbancevaries from 86 to 767 mGal, with a global average of 747 mGal, and the estimatedMoho depth varies from 3 to 39 km with a global average of 19 km. Comparing the Bouguergravity disturbance estimated from satellite altimetry and that derived by the gravimetricsatellite-only model GOGRA04S shows that the two models agree to 13 mGal in root meansquare (RMS). Similarly, the estimated Moho depths from satellite altimetry andGOGRA04S agree to 0.69 km in RMS. It is also concluded that possible mean dynamictopography in the marine gravity model does not significantly affect the Moho determination.

  • 8.
    Acheampong, Josephine
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    Green Financing: Financing Circular Economy Companies: Case Studies of Ragn-Sellsföretagen AB and Inrego AB2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The circular economy (CE) has been identified as a catalyst in sustainable development and economic growth that has the potential to move society from the traditional linear model of resource consumption in the form of take-make-waste to an innovative circular model in the form of reduce-reuse-recycle.

    Transitioning from the linear economy to the CE requires changes in four areas: material and product design, business models, global reverse networks and enabling business environments. This study considers the financing needs of CE companies as a result of business model changes.

    Through the case studies of Ragn-Sellsföretagen AB and Inrego AB, analysed with secondary data from ING Bank and primary data collected through semi-structured interviews with the case companies, this research sheds more light on the financing needs of circular economy companies and how they are financed.

    Findings from this research suggest that the financing needs of circular economy companies depend on the value proposition of the company. In accordance with the pecking order of capital structure, all financing needs of the companies studied are financed from internal sources, particularly retained earnings before external debt financing is accessed. Findings indicate the willingness of banks to finance circular economy companies.

    The results of this research suggest that the circular economy companies studied do not need financial support from the government or its agencies to succeed even though favourable laws are welcomed. They report that their long-term success depends on their ability to remain innovative in their business models, aligning with Schumpeter’s creative destruction model.

  • 9.
    Adamsson, Niklas
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Integrated Product Development.
    Grimheden, Martin
    KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Mechatronics.
    The Product Developer: Education and Professional Role2007In: Proceedings of ICED 2007, the 16th International Conference on Engineering Design, 2007Conference paper (Refereed)
    Abstract [en]

    The aim of this paper is to present results from a study examining the relation between the educational background and professional roles with engineers engaged in product development. Derived from previous studies, the product development engineer ought to be a multifaceted engineer, knowledgeable and skilled in several fields. This engineer should work interdisciplinary, integrative and with the aim to be creative and innovative. By using a substantial data set consisting of 300 engineers in Swedish product development organizations, we derive some important research propositions. The data shows that there are correlations between organizational responsibilities and educational program, in particular regarding focus on design, system integration, project management and technical coordination. If we want to understand how the engineering education affects the professional role of an engineer; we believe that it is critical to further investigate the developed propositions. One example is mechanical engineers; the data shows that the studied mechanical engineers rarely work with design. Our proposition is therefore to investigate the identity and legitimacy of these programs to further clarify the professional role.

  • 10.
    Agrell, Fredrik
    KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).
    Control of HCCI by aid of Variable Valve Timings with Specialization in Usage of a Non-Linear Quasi-Static Compensation2006Doctoral thesis, comprehensive summary (Other scientific)
    Abstract [en]

    This doctoral thesis is about controlling the combustion timing of the combustion concept Homogeneous Charge Compression Ignition, HCCI, by means of variable valve timings.

    The HCCI research usually is regarded to have started in Japan during the later part of the 1970´s. The world of HCCI has since grown and HCCI is of today researched worldwide. Of particular interest from a Swedish point of view is that Lund Institute of Technology has emerged as one of the world leading HCCI laboratories.

    The idea with HCCI is to combine the Otto and Diesel engine. As in an Otto engine the charge is premixed but as in a Diesel engine the operation is unthrottled and the compression heat causes the ignition. The combustion that follows the ignition takes place homogeneously and overall lean. The result is ultra low NOx and particulate emissions combined with high total efficiency. A difficulty with the HCCI-concept is that it only works in a narrow area and that there is no direct way to control the Start Of Combustion, SOC. Out of this follows that timing/phasing of the combustion is one of the main difficulties with HCCI combustion concepts. This is particularly emphasized during transient operation and calls for feedback control of the combustion timing.

    This work investigates one method, the variable valve timing, to achieve feedback control of the combustion phasing. From the work it can be concluded that the variable valve timing can control the combustion phasing during engine transients. In order to improve the performance a non-linear compensation from ignition delay to valve timings has been suggested, incorporated in a control structure and tested in engine test. The engine test has been performed in a single cylinder engine based on a Scania truck engine. The speed range from 500 to 1750 rpm and the load range 1.26 and 10.5 bar of netIMEP has been covered with fair transient performance.

  • 11. Ahlberg, Simon
    et al.
    Hörling, Pontus
    Jöred, Karsten
    Lindström, Björn
    Mårtenson, Christian
    Neider, Göran
    Schubert, Johan
    Sidenbladh, Hedvig
    Svenson, Pontus
    Svensson, Per
    Unden, Katarina
    Walter, Johan
    The IFD03 information fusion demonstrator2004In: Proceedings of the Seventh International Conference on Information Fusion, FUSION 2004, 2004, 936-943 p.Conference paper (Refereed)
    Abstract [en]

    The paper discusses a recently developed demonstrator system where new ideas in tactical information fusion may be tested and demonstrated. The main services of the demonstrator are discussed, and essential experience from the use and development of the system is shared.

  • 12.
    Ahmed, Abubeker W.
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport Science. Swedish National Road and Transport Research Institute, Sweden.
    Erlingsson, Sigurdur
    KTH, School of Architecture and the Built Environment (ABE), Transport Science. Swedish National Road and Transport Research Institute, Sweden; University of Iceland.
    Characterisation of heavy traffic axle load spectra for mechanistic-empirical pavement design applications2015In: The international journal of pavement engineering, ISSN 1029-8436, E-ISSN 1477-268X, Vol. 16, no 6, 488-501 p.Article in journal (Refereed)
    Abstract [en]

    Heavy traffic axle load spectrum (ALS) is one of the key inputs for mechanistic-empirical analysis and design of pavement structures. Frequently, the entire ALS is aggregated into number of equivalent single axle loads or assumed to have constant contact area (CCA) or constant contact pressure. These characterisations affect the accuracy and computational performance of the pavement analysis. The objective of this study was to evaluate these characterisations based on predicted performances to rutting and fatigue cracking of several pavement structures subjected to ALS data collected from 12 bridge weigh in motion stations. The results indicated that for layers below the top 25cm, all characterisations produced similar values of predicted rutting. However, for the top 25cm, the methods differed in the predicted performances to rutting and fatigue cracking. Furthermore, an improvement to the CCA approach was proposed that enhanced the accuracy while maintaining the same level of computational performance.

  • 13. Ahmed, Zeeshan
    et al.
    Steiner, Ingmar
    Székely, Éva
    CNGL, UCD.
    Carson-Berndsen, Julie
    A system for facial expression-based affective speech translation2013In: Proceedings of the companion publication of the 2013 international conference on Intelligent user interfaces companion, 2013, 57-58 p.Conference paper (Refereed)
    Abstract [en]

    In the emerging eld of speech-to-speech translation, empha- sis is currently placed on the linguistic content, while the sig- ni cance of paralinguistic information conveyed by facial ex- pression or tone of voice is typically neglected. We present a prototype system for multimodal speech-to-speech transla- tion that is able to automatically recognize and translate spo- ken utterances from one language into another, with the out- put rendered by a speech synthesis system. The novelty of our system lies in the technique of generating the synthetic speech output in one of several expressive styles that is au- tomatically determined using a camera to analyze the user’s facial expression during speech. 

  • 14.
    Ajami Gale Rashidi, Sam André
    KTH, School of Computer Science and Communication (CSC), Media Technology and Interaction Design, MID.
    Designing for sustainable grocery shopping: A conceptual design to encourage sustainable shopping2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Climate change is one of the biggest issues that the world faces today, and one of the biggest contributors to climate change are groceries. This paper aims at using digital artefacts to create a product or design that will encourage the user to shop more environmentally friendly. To achieve this, I have tried to identify the major hindrances today that grocery shoppers are faced with through the user centered method Contextual Inquiry.  I have then presented the results from the inquiry to students at KTH Royal Institute of Technology during workshops. During these workshops, the students have conceptualized ideas and designs for different solutions. Based on their results, I have created a prototype design that I call the SmartCart. This cart consists of a regular shopping cart with a screen similar to an iPad attached to the handlebars. This screen then delivers easily apprehensible information about different grocery products environmental impact in real time. The design has not been tested in a live environment, but initial testing indicates that a live application could give satisfying results in lowering the sales of grocery products with a high environmental impact, while the design also could simultaneously improve the shopping experience for the customers in the grocery store.

  • 15.
    Akillioglu, Hakan
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
    Dias-Ferreira, João
    KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
    Onori, Mauro
    KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
    Characterization of continuous precise workload control and analysis of idleness penalty2016In: Computers & industrial engineering, ISSN 0360-8352, E-ISSN 1879-0550, Vol. 102, 351-358 p.Article in journal (Refereed)
    Abstract [en]

    The variability in the market conditions is growing in terms of its frequency of change and range of diversity. In response to this new industrial panorama, research on production systems is aiming to achieve highly reconfigurable shop floors. Frequent changes in such systems require also frequent re-planning with updated information. In this regard the Continuous Precise Workload Control method, is a recent approach aiming at precise control of workload in shop floor with the use of direct load graphs. Supported by a multi-agent platform, it generates dynamic non-periodic release decisions exploiting real time shop floor information. The study in this paper is two folded; (1) the presented workload approach is defined in terms of eight dimensions of the workload control concept in order to highlight its distinctive characteristics and (2) the impact of idleness penalty factor is analyzed by an experiment design in order to investigate its effect on the job release decision. The results show that the idleness penalty factor decreases the idleness of the resources up to a point where the adverse effect is initiated.

  • 16.
    Al Moubayed, Samer
    et al.
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    Heylen, D.
    Bohus, D.
    Koutsombogera, Maria
    Papageorgiou, H.
    Esposito, A.
    Skantze, Gabriel
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    UM3I 2014: International workshop on understanding and modeling multiparty, multimodal interactions2014In: ICMI 2014 - Proceedings of the 2014 International Conference on Multimodal Interaction, Association for Computing Machinery (ACM), 2014, 537-538 p.Conference paper (Refereed)
    Abstract [en]

    In this paper, we present a brief summary of the international workshop on Modeling Multiparty, Multimodal Interactions. The UM3I 2014 workshop is held in conjunction with the ICMI 2014 conference. The workshop will highlight recent developments and adopted methodologies in the analysis and modeling of multiparty and multimodal interactions, the design and implementation principles of related human-machine interfaces, as well as the identification of potential limitations and ways of overcoming them.

  • 17.
    Albini, Gabriele Luigi Aldo
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    "An Analysis of the European Telecommunications Strategic Environment: How Can Strategic Actions Be Defined to Adapt to the New Scenario? A Telefónica Case Study"2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This research presents an analysis of the European Telecommunication strategic environment with particular focus on the three macro-changes which have been influencing the recent history of such industry. These are, first of all, the shift from a government-controlled market to a privatized market. Second, the introduction of price limitations - called Eurotariff - which are supposed to regulate the mobile traffic throughout Europe. Finally, the constant growth of data and internet traffic demand, compared to the voice traffic demand, mainly due to the success of OTTs (Over-the-Tops) and the introduction of NGN (Next-Generation Network) applications and software. Such changes have increased the competition in an industry which was organized in monopolies and are forcing the companies to change, following the different customers' needs. Throughout the essay, a case study about Telefónica has been developed: after a presentation of the company and of Telefónica's deregulation process, the consequences of the environment analysis will be defined and, finally, some strategic actions will be proposed in order to adapt to the new strategic environment. The methodology which has been followed consists in a research on the models existing in literature designed to analyze the strategic environment. The best ones have been used and applied to the real case, involving Telefónica: the findings obtained have then been considered the basis to define the strategic actions. The purpose of the paper is twofold: first of all to offer an understanding of the telecommunications business with a particular focus on the Eurotariff, OTTs and NGN phenomena; second to show how a strategic environment can be effectively studied, focusing on the changes that characterize the industry, and how the consequences can be deduced. The information coming from this type of studies is very important for a company to understand what to change in order to adapt to a new context and achieve better performances.

  • 18.
    Albiz, Niccolas
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Sustainability and Industrial Dynamics.
    Sustainability Education at Industrial Engineering Programs in Sweden: A study of the relevant and received sustainability education, and the associated challenges, at 5-year industrial engineering programs2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The public concern for sustainability issues is ever increasing whilst the trust in corporations is decreasing. CEOs now see sustainability concern and compliance as an important component in retaining their competitive advantage and regaining the trust of their surrounding community. For these reasons it is important to find new manners of uniting societal improvement with business, requiring new forms of competencies. This study has investigated what sustainability education is actually central to the industrial engineering profile, as well as what of this is then covered in the programs.

    The study involved two phases. The first involved interviewing experts as to what was central for these engineers to learn, resulting in a content list. The second phase involved mapping the instances of this content in the five largest industrial engineering programs (covering circa 74% of these students) as well as the associated challenges to broaching this content. The first phase was primarily qualitative whilst the second phase was largely quantitative, though each data point consisted of a qualitative interview.

    Five key insights can be drawn from the study regardless of normative stand-point. 1) The sustainability topics that were deemed relevant cover a vast area of disciplines and aspects. 2) There is a skewedness in the content covered, favouring the environmental aspects. 3) There is a lack of integrative instances where the knowledge from different sources and perspectives is synthesized. 4) The key challenges revolve around concept definition and communication. 5) The normativity, interconnectedness and pedagogics contribute with uncertainty and complexity in the assessment of sustainability education.

    The study is finalized with a synthesis of the various insights to arrive at the conclusion that having sustainable business practice as the aim of the programs, establishing common content goals and employing active learning approach would circumvent many of the perceived challenges as well as align the programs with the need of the industry.

    This study contributes with deeper understanding of the sustainability education required and provided to industrial engineering students in Sweden. As such the study has practical applications for the programs studied. The theoretical implications of this study lie in the empirical data achieved regarding the topics of relevance to these engineers, showing high levels of agreement with current literature, as well as the perceived challenges to broaching this content in the current curricula. Furthermore it provides empirical data as to the sustainability education received at different programs.

  • 19.
    Alcaraz Bosca, Neus
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Industrial Economics and Management (Div.).
    Lean project management. Assessment of project risk management processes2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Traditional methods of project management are not appropriate for complex projects anymore. Since projects are becoming increasingly complex and uncertain, interaction between activities and resources is growing in ways not considered by these methods. Nowadays, managers need more agile project management methods that are able to recognize and deal with uncertainty and to produce the expected results. Lean project management, the most recent approach of lean methodology, appears as an alternative approach capable of dealing with complexity and uncertainty. The latest investigations in the field show that traditional methods are still adequate for simple projects, while lean methods are more appropriate for complex projects.

    This thesis aims to investigate the nature of lean project management and to examine project risk management processes so that managers can assess the complexity of projects before their beginning and decide which method to apply in order to manage them. 

  • 20. Alessi, D.
    et al.
    Berrill, M.
    Wang, Y.
    Domingue, S. R.
    Martz, Dale
    National Science Foundation ERC for Extreme Ultraviolet Science and Technology, Colorado State University.
    Luther, B. M.
    Meng, L.
    Guilbaud, O.
    Klisnick, A.
    Rocca, J. J.
    Beam Characteristics of an Injection-Seeded Solid-Target Plasma Soft X-Ray Laser2010In: 2010 23RD ANNUAL MEETING OF THE IEEE PHOTONICS SOCIETY, 2010, 341-342 p.Conference paper (Refereed)
    Abstract [en]

    We have measured the near-field and far-field profiles (for lambda=13.9 nm) as well as temporal coherence (for lambda=18.9 nm) of injection-seeded and self-seeded solid-target amplifiers. The measurements were compared with model simulations.

  • 21. Alessi, D.
    et al.
    Martz, Dale
    National Science Foundation ERC for Extreme Ultraviolet Science and Technology.
    Luther, B.
    Wang, Y.
    Berrill, M.
    Kemp, D.
    Patel, D.
    Menoni, C. S.
    Rocca, J. J.
    High Energy 13.9 nm Table-top Soft X-ray Laser Operating at 2.5 Hz Repetition Rate2010In: 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), 2010Conference paper (Refereed)
    Abstract [en]

    We have demonstrated table-top generation of λ = 13.9 nm laser pulses with 7 μJ energyat 2.5 Hz repetition rate from nickel-like ions in a laser-created plasma that will enable new applications of coherent soft x-ray light on a table-top. 

  • 22. Alessi, D.
    et al.
    Meng, L. M.
    Wang, Y.
    Guilbaud, O.
    Berrill, M.
    Domingue, S. R.
    Martz, Dale
    National Science Foundation ERC for Extreme Ultraviolet Science and Technology.
    Luther, B. M.
    Joyeux, D.
    De Rossi, S.
    Klisnick, A.
    Rocca, J. J.
    Spectral Linewidth Measurement of an Injection-Seeded Transient 18.9 nm Soft X-Ray Laser2011In: 2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2011Conference paper (Refereed)
    Abstract [en]

    The linewidth of an injection-seeded 18.9nm molybdenum soft x-ray laser (SXRL) was measured to be significantly wider than seeded optical field ionization SXRLs that use gaseous targets, an advantage for the development of sub-picosecond SXRLs.

  • 23.
    Alexanderson, Simon
    et al.
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    O'Sullivan, C.
    Beskow, Jonas
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    Robust online motion capture labeling of finger markers2016In: Proceedings - Motion in Games 2016: 9th International Conference on Motion in Games, MIG 2016, ACM Digital Library, 2016, 7-13 p.Conference paper (Refereed)
    Abstract [en]

    Passive optical motion capture is one of the predominant technologies for capturing high fidelity human skeletal motion, and is a workhorse in a large number of areas such as bio-mechanics, film and video games. While most state-of-the-art systems can automatically identify and track markers on the larger parts of the human body, the markers attached to fingers provide unique challenges and usually require extensive manual cleanup. In this work we present a robust online method for identification and tracking of passive motion capture markers attached to the fingers of the hands. The method is especially suited for large capture volumes and sparse marker sets of 3 to 10 markers per hand. Once trained, our system can automatically initialize and track the markers, and the subject may exit and enter the capture volume at will. By using multiple assignment hypotheses and soft decisions, it can robustly recover from a difficult situation with many simultaneous occlusions and false observations (ghost markers). We evaluate the method on a collection of sparse marker sets commonly used in industry and in the research community. We also compare the results with two of the most widely used motion capture platforms: Motion Analysis Cortex and Vicon Blade. The results show that our method is better at attaining correct marker labels and is especially beneficial for real-time applications.

  • 24.
    Alexanderson, Simon
    et al.
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    O'Sullivan, Carol
    Beskow, Jonas
    KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.
    Real-time labeling of non-rigid motion capture marker sets2017In: Computers & graphics, ISSN 0097-8493, E-ISSN 1873-7684, Vol. 69, no Supplement C, 59-67 p.Article in journal (Refereed)
    Abstract [en]

    Passive optical motion capture is one of the predominant technologies for capturing high fidelity human motion, and is a workhorse in a large number of areas such as bio-mechanics, film and video games. While most state-of-the-art systems can automatically identify and track markers on the larger parts of the human body, the markers attached to the fingers and face provide unique challenges and usually require extensive manual cleanup. In this work we present a robust online method for identification and tracking of passive motion capture markers attached to non-rigid structures. The method is especially suited for large capture volumes and sparse marker sets. Once trained, our system can automatically initialize and track the markers, and the subject may exit and enter the capture volume at will. By using multiple assignment hypotheses and soft decisions, it can robustly recover from a difficult situation with many simultaneous occlusions and false observations (ghost markers). In three experiments, we evaluate the method for labeling a variety of marker configurations for finger and facial capture. We also compare the results with two of the most widely used motion capture platforms: Motion Analysis Cortex and Vicon Blade. The results show that our method is better at attaining correct marker labels and is especially beneficial for real-time applications.

  • 25.
    Alf, Christoffer
    KTH, School of Education and Communication in Engineering Science (ECE).
    Erfarande av museiutställningar med hjälp av virtuell verklighet2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis investigates the museum exhibition Royal Wedding Dresses at the Stockholm castle. This exhibition was temporary and closed in April 2017. The overall purpose is to map what can be done in order to raise interest and create meaning in a broader audience including younger people to take part in the exhibition, and create meaning of it after it has been closed down. An additional purpose is to investigate how, why, and whom the museum exhibition Royal Wedding Dresses can interest using virtual reality (VR), after the end of the exhibition.

    In this survey, a literature study, interviews and observations are performed regarding the exhibition Royal Wedding Dresses. This is the basis for developing a VR application prototype where major parts of the exhibition are included. Finally, the application is evaluated for technical interaction and how the virtual visit has been evaluated, to assess whether VR can create interest in, and develop, the exhibition for a wider audience.

    The result indicates that the application has good technical interaction, but the original exhibition does not encourage the visitor to experience it, and the application is unable to develop it in this regard. The application will not be more interesting for a younger audience than its content. With the help of aspects of serious gaming and social interaction, as well as future studies on the subject with more respondents and an expanded perspective, it may be possible to overcome these limitations. If technical interaction and social interaction can be integrated, the experience can also be developed and be put in a meaningful context that encourages experience and better retention of the virtual visit.

  • 26.
    ALINE DE SANTA, IZABEL ALVES
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    To Be Lean or Not To Be Lean: Developing a Strategic Plan for a Nutraceutical Startup in Sweden2016Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Time to market can be a decisive factor when bringing a new product or a new company to the market. Sometimes, for not defining strategic plans during the new product development phase, companies fail. According to the Lean Start Up Methodology (LSM), testing market-fit as early as possible and customer focused product development are important to increase the chances of a successful commercialization. The definition of a value proposition based on the market needs is seen as a central point to orchestrate key activities such as teamwork, efficient product development and marketing and finally the commercialization. In Sweden, the nutraceutical industry today represents a dynamic sector that offers novel opportunities to converge scientific discovery with growing consumer interest in health-improving foods.This study discourses on functional food segment, with a focus on probiotic, prebiotic and symbiotic-based products. It included a case study in a new company active in the nutraceutical sector in Sweden (TSL). Their actual strategy for commercializing a symbiotic-based weight loss program will be evaluated, and a new strategy built inspired on LSM Methodology is proposed, with a special focus on value proposition design.

  • 27. Al-Naamani, Laila
    et al.
    Dobretsov, Sergey
    Dutta, Joydeep
    KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.
    Chitosan-zinc oxide nanoparticle composite coating for active food packaging applications2016In: Innovative Food Science & Emerging Technologies, ISSN 1466-8564, E-ISSN 1878-5522, Vol. 38, 231-237 p.Article in journal (Refereed)
    Abstract [en]

    In this study antimicrobial properties of chitosan and chitosan-zinc oxide (ZnO) nanocomposite coatings on PE films were studied. Oxygen plasma pretreatment of PE films led to increased adhesion by 2% of chitosan and the nanocomposite coating solutions to the packaging films. Scanning Electron Microscopy (SEM) revealed uniform coatings on PE surfaces. Incorporation of ZnO nanoparticles into the chitosan matrix resulted in 42% increase in solubility; swelling decreased by 80% while the water contact angle (WCA) increased from 60 to 95 compared to chitosan coating. PE coated with chitosan-ZnO nanocomposite films completely inactivated and prevented the growth of food pathogens, while chitosan-coated films showed only 10-fold decline in the viable cell counts of Salmonella enterica, Escherichia coli and Staphylococcus aureus after 24-h incubation compared to the control. Industrial relevance: One of the greatest challenges of food industry is microbial contamination. The present study suggests that PE coating with chitosan-ZnO nanocomposite is a promising technique to enhance antimicrobial properties of the films. Chitosan-ZnO nanocomposite coatings improved antibacterial properties of PE by inactivating about 99.9% of viable pathogenic bacteria. Hence, our results show the effectiveness of the nanocomposite coating in the development of active food packaging in order to prolong the shelf life of food products.

  • 28.
    ALTERSBERGER, STEFAN
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    The Impact of Venture Capital Financing on Lean Startups2016Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This master thesis deals with the problem statement of how venture capital financing influences the processes and the outcome of a lean startup. Hence, the thesis focuses on the lean methodology and its implementation in startups. The literature review shows that lean is a well-established term and a concept used in various different areas. Nevertheless, in the field of young and emerging ventures, it is fairly new approach. Thus, in combination with VC funding, where also a shift towards less capital and faster cycle times is seen, a research gap can be identified. In other words, the research aims to investigate how the two concepts influence and interact with each other. Moreover, the focus is on measuring if and how the startup's lean operations are affected by the investment. Hence, the thesis concentrates on the entrepreneur's point of view. Empirical data for the research project was gained through five expert interviews with startup founders that evolved an idea and built a company that received venture capital funding at some point. The outcome of the study showed that not the VC firm itself but the vast investment affected the processes and the outcome of the lean startup. Hence, the sudden impact can destabilize the learning circle. Furthermore, part of the startups investigated had to reposition themselves because of changing objectives. In conclusion, the findings imply that certain aspects determine how a cooperation of this two concepts will look. Also, there are factors such time of funding, size of investment and the details of the partnership agreement that will have an impact on the lean concept applied by the startup.

  • 29.
    Alvehag, Karin
    et al.
    KTH, School of Electrical Engineering (EES).
    Söder, Lennart
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    A stochastic approach for modeling residential interruption costs2008In: 16th Power Systems Computation Conference, PSCC 2008, Power Systems Computation Conference (PSCC) , 2008Conference paper (Refereed)
    Abstract [en]

    In power system planning and operation, accurate assessment of reliability worth is essential for making informed decisions. The accuracy of the reliability worth estimation is directly affected by the interruption cost model used in the analysis. Residential interruption costs vary with season, day of week and time of day, and can be difficult to handle because of their intangible characteristics. This paper develops a cost model for residential customers that includes the timing of the outage by modeling the underlying factors that give rise to the temporal variations in residential interruption costs. By considering the stochastic nature of the underlying factors, as for example outdoor temperature, the proposed model makes it possible to estimate the costs for an event that is extreme in other senses than having a long duration. Time sequential Monte Carlo simulations were applied to a test system in order to assess reliability worth. The results show that the commonly used customer damage function overestimates the reliability worth. By accounting for the timing of the outages a more realistic estimation of the interruption costs can be obtained.

  • 30.
    Amindezfooli, Soroor
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Analysing the Effect of Angle of Attack on Turbulence Intensity, Wake and Power Production for Hexicon Floating Platform2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    When the wind passes through the wind turbine, it losses a part of its energy and as a result a low momentum region creates behind the wind turbine that refers to the wake.  This effect is more significant in a wind farm, where a group of wind turbines are located close to each other in a specific region. Since the wind speed slows down after passing the first row of the turbine, the other rows at the downstream experience lower wind velocity and consequently they can capture less energy in the wind. Wake effect influences the annual power production of a wind farm, not only because of the reduction in the wind velocity but also because of creating  turbulence in the flow and generating more vibration loads on the rotors which can reduce the lifetime of the turbines and increase fatigue on the blades.  Also when the Angle Of Attack (AOA) changes the shape of the wake varies which influence the annual power production and turbulence intensity of a wind farm. 

    The main purpose of this work is to investigate the effect of changing the AOA on the annual power production and the turbulence intensity of Hexicon platform. For this aim, different AOA between zero and 15 degrees are considered in the simulations.

    ANSYS CFX is applied to model the wind turbine configuration and simulate the fluid flow in different wind direction using unstructured meshing method. In addition wind characteristics profiles such as mean wind velocity, turbulence intensity and length scale at different height are imposed at the inlet of the domain to present the Atmospheric Boundary Layer (ABL). RNG k-ε model is implemented for turbulence modeling. In addition roughness modification is utilized in simulation to get more accurate results in terms of turbulence intensity. 

  • 31.
    Andersson, David
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    From the Electronic Structure of Point Defects to Functional Properties of Metals and Ceramics2007Doctoral thesis, comprehensive summary (Other scientific)
    Abstract [en]

    Point defects are an inherent part of crystalline materials and they influence important physical and chemical properties, such as diffusion, hardness, catalytic activity and phase stability. Increased understanding of point defects enables us to tailor the defect-related properties to the application at hand. Modeling and simulation have a prominent role in acquiring this knowledge. In this thesis thermodynamic and kinetic properties of point defects in metals and ceramics are studied using first-principles calculations based on density functional theory. Phenomenological models are used to translate the atomic level properties, obtained from the first-principles calculations, into functional materials properties. The next paragraph presents the particular problems under study.

    The formation and migration of vacancies and simple vacancy clusters in copper are investigated by calculating the energies associated with these processes. The structure, stability and electronic properties of the low-oxygen oxides of titanium, TiOx with 1/3 < x < 3/2, are studied and the importance of structural vacancies is demonstrated. We develop an integrated first-principles and Calphad approach to calculate phase diagrams in the titanium-carbon-nitrogen system, with particular focus on vacancy-induced ordering of the substoichiometric

    carbonitride phase, TiCxNy (x+y < 1). The possibility of forming higher oxides of plutonium than plutonium dioxide is explored by calculating the enthalpies for nonstoichiometric defect-containing compounds and the analysis shows that such oxidation is only produced by strong oxidants. For ceria (CeO2) doped with trivalent ions from the lanthanide series we probe the connection between the choice of a dopant and the improvement of ionic conductivity by studying the oxygen-vacancy formation and migration properties. The significance of minimizing the dopant-vacancy interactions is highlighted. We investigate the redox thermodynamics of CeO2-MO2 solid solutions with M being Ti, Zr, Hf, Th, Si, Ge, Sn or Pb and show that reduction is facilitated by small solutes.

    The results in this thesis are relevant for the performance of solid electrolytes, which are an integral part of solid oxide fuel cells, oxygen storage materials in automotive three-way catalysts, nuclear waste materials and cutting tool materials.

  • 32.
    Andersson, David A.
    et al.
    KTH, Superseded Departments, Materials Science and Engineering.
    Simak, S. I.
    Monovacancy and divacancy formation and migration in copper: a first-principles theory2004In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 70, no 11, 115108- p.Article in journal (Refereed)
    Abstract [en]

    The formation and migration of monovacancies and divacancies in copper have been studied from first-principles in order to resolve the discrepancies between previously published experimental and theoretical data. The monovacancy and divacancy formation, migration and binding enthalpies as well as the formation volumes have been calculated in the framework of a plane-wave pseudopotential implementation of the density functional theory, with full structural relaxations included. The monovacancy and divacancy formation entropies have been estimated from experimental data by performing a least-squares analysis. We show that the complete set of first-principles data, taking into account the presence of both vacancies and divacancies as well as the temperature dependence of the formation enthalpies and entropies allow one to reproduce the Arrhenius plot of the total vacancy concentration and the diffusion coefficient, both in good agreement with the most accurate experiments.

  • 33.
    Andersson, David A.
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Simak, S. I.
    Skorodumova, N. V.
    Abrikosov, I. A.
    Johansson, Börje
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
    Modeling of Ce2, Ce2O3 ,and CeO2-x in the LDA+U formalism2007In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 75, no 3, 035109- p.Article in journal (Refereed)
    Abstract [sv]

    The electronic structure and thermodynamic properties of CeO2 and Ce2O3 have been studied from first principles by the all-electron projector-augmented-wave (PAW) method, as implemented in the ab initio total-energy and molecular-dynamics program VASP (Vienna ab initio simulation package). The local density approximation (LDA)+U formalism has been used to account for the strong on-site Coulomb repulsion among the localized Ce 4f electrons. We discuss how the properties of CeO2 and Ce2O3 are affected by the choice of U as well as the choice of exchange-correlation potential, i.e., the local density approximation or the generalized gradient approximation. Further, reduction of CeO2, leading to formation of Ce2O3 and CeO2-x, and its dependence on U and exchange-correlation potential have been studied in detail. Our results show that by choosing an appropriate U it is possible to consistently describe structural, thermodynamic, and electronic properties of CeO2, Ce2O3, and CeO2-x, which enables modeling of redox processes involving ceria-based materials.

  • 34.
    Andersson, David A.
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Simak, S. I.
    Skorodumova, N. V.
    Abrikosov, I. A.
    Johansson, Börje
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
    Redox properties of CeO2-MO2 MO2 (M=Ti, Zr, Hf or Th) solid solutions from first principles calculations2007In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 90, no 3, 031909- p.Article in journal (Refereed)
    Abstract [en]

    The authors have used density functional theory calculations to investigate how the redox thermodynamics and kinetics of CeO2 are influenced by forming solid solutions with TiO2, ZrO2, HfO2, and ThO2. Reduction is facilitated by dissolving TiO2 (largest improvement), HfO2, or ZrO2 (least improvement), while ThO2 makes reduction slightly more difficult. The migration barrier is much lower in the neighborhood of a Ti (largest decrease), Hf, or Zr (least decrease), while the binding energy of solute ions and vacancies increases in the same sequence. They rationalize the properties of ceria solid solutions in terms of defect cluster relaxations.

  • 35.
    Andersson, David A.
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Simak, S. I.
    Skorodumova, N. V.
    Abrikosov, I. A.
    Johansson, Börje
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
    Theoretical study of CeO(2) doped with tetravalent ions2007In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 76, no 7, 174119- p.Article in journal (Refereed)
    Abstract [en]

    We have used density functional theory calculations within the LDA+U formulation to investigate how small amounts of dissolved SiO2, GeO2, SnO2, or PbO2 affect the redox thermodynamics of ceria (CeO2). Compared to pure ceria, reduction is facilitated and the reducibility increases in the sequence of CeO2-SnO2, CeO2-GeO2, and CeO2-SiO2, which correlates with the decrease of the ionic radii of the solutes. For low solute concentrations, there is an inverse relation between high reducibility and the solution energy of tetravalent solutes. CeO2-PbO2 is unique in the sense that the initial reduction occurs by Pb(IV)double right arrow Pb(II) instead of the usual Ce(IV)double right arrow Ce(III) reaction. Among the investigated ceria compounds, CeO2-PbO2 has the lowest reduction energy and rather low solution energy. We have studied how the solution and reduction energies depend on the concentration of Si, Ge, Sn, Pb, Ti, Zr, Hf, and Th solute ions. While the solution energy increases monotonously with concentration, the reduction energy first decreases, as compared to pure ceria (except for Th, which exhibits a small increase), and with further increase of solute concentration, it either remains almost constant (Zr, Hf, and Th) or slightly increases (Ti, Si, Ge, and Sn).

  • 36.
    Andersson, David A.
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Simak, Sergei I.
    Skorodumova, Natalia V.
    Abrikosov, Igor A.
    Johansson, Börje
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
    Optimization of ionic conductivity in doped ceria2006In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 103, no 10, 3518-3521 p.Article in journal (Refereed)
    Abstract [en]

    Oxides with the cubic fluorite structure, e.g., ceria (CeO2), are known to be good solid electrolytes when they are doped with cations of lower valence than the host cations. The high ionic conductivity of doped ceria makes it an attractive electrolyte for solid oxide fuel cells, whose prospects as an environmentally friendly power source are very promising. In these electrolytes, the current is carried by oxygen ions that are transported by oxygen vacancies, present to compensate for the lower charge of the dopant cations. Ionic conductivity in ceria is closely related to oxygen-vacancy formation and migration properties. A clear physical picture of the connection between the choice of a dopant and the improvement of ionic conductivity in ceria is still lacking. Here we present a quantum-mechanical first-principles study of the influence of different trivalent impurities on these properties. Our results reveal a remarkable correspondence between vacancy properties at the atomic level and the macroscopic ionic conductivity. The key parameters comprise migration barriers for bulk diffusion and vacancy-dopant interactions, represented by association (binding) energies of vacancy-dopant clusters. The interactions can be divided into repulsive elastic and attractive electronic parts. In the optimal electrolyte, these parts should balance. This finding offers a simple and clear way to narrow the search for superior dopants and combinations of dopants. The ideal dopant should have an effective atomic number between 61 (Pm) and 62 (Sm), and we elaborate that combinations of Nd/Sm and Pr/Gd show enhanced ionic conductivity, as compared with that for each element separately.

  • 37.
    ANDERSSON GLASS, A M A N D A
    et al.
    KTH, School of Computer Science and Communication (CSC).
    STORVALL, J O H A N
    KTH, School of Computer Science and Communication (CSC).
    Rapid Serial Visual Presentation påmoderna mobiltelefoner2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis is a comparative study of Rapid Serial Visual Presentation (RSVP) which is a

    dynamic method of presenting text.

    The aim of the study was to investigate how to improve the user friendlyness of RSVP for

    today's mobile phones and technology. To fulfill the purpose, the aspects of the method which

    could be improved was investigated and then implemented in a prototype. The prototype was

    tested in an experimental study after which the result was analyzed and compared with previous

    studies of RSVP.

    The new features that were implemented in this study showed no significant improvements in

    usability compared with previous studies, but proved to be more user-friendly in comparison

    with normal spatial reading.

  • 38. Andersson, Kurt
    et al.
    Artman, Kristian
    Astell, Magnus
    Axberg, Stefan
    Liwång, Hans
    Lundberg, Anders
    Norsell, Martin
    Torn\’e;rhielm, Lars
    Lärobok i Militärteknik, vol. 1: Grunder2007Book (Other academic)
  • 39.
    Andersson, Lars
    et al.
    KTH, School of Technology and Health (STH), Health Systems Engineering, Ergonomics.
    Hansson, Mats
    KTH, School of Technology and Health (STH), Health Systems Engineering, Ergonomics.
    Systematisk kunskapsbrist i skolan?: Arbetsmiljöarbete utan udd2014Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Swedish employers are obliged by law to systematically plan, direct and control activities so that the working environment meets the prescribed requirements. However, evidence indicates that this work is not performed satisfactorily in many schools. This case study aims at mapping out and clarifying how measures towards planning, directing and controlling activities are organized in two public compulsory schools.

     

    The overall purpose of the study is to shed light on elements and conditions that hinder a successful implementation of work environment measures. Our main research questions are: Does the way the municipalities have organized the working environment measures reach the requirements in the law and how controls and follow-ups are performed. Data was collected through the municipalities’ steering documents together with a survey in combination with follow-up interviews with key figures.

     

    Results show that the working environment measures in both schools are organized and performed in similar ways and that the problems reported to a large extent are the same. The unanimous picture shows an organization that is not capable of identifying and handling all important risks. Conclusions from the study indicate that there is a lack of knowledge concerning working environments measures on all levels in the organizations.

  • 40.
    Andersson, Lisa
    KTH, School of Technology and Health (STH), Health Systems Engineering, Ergonomics.
    Det passar inte alla: Arbetstillfredställelse, produktivitet och stress i kontorslandskap2016Independent thesis Advanced level (degree of Master (One Year)), 40 credits / 60 HE creditsStudent thesis
    Abstract [en]

    The open-plan offices at Boliden has been renovated. The company wanted an evaluation of what the employees thought about the physical work environment in the new offices. The company also wanted the study to present improvement for deficiencies in the physical environment.

     

    The aim of this study was to identify positive and negative aspects of the physical working environment factors and to identify correlation between the physical work environment factors and job satisfaction, productivity and stress. A second purpose was also to present some improvement for the physical work environment. A part of the questionnaire was to evaluate if there existed any difference between the sexes regarding the physical work environment. To examine these aspects this study used a questionnaire as well a system group seminar to develop possible improvements.

     

    The results from the questionnaire show that the employees were pleased with the ventilation, the furniture’s functionality and the aesthetics of the office. The questionnaire also found dissatisfaction with glare, outlook and temperature but mostly the audial privacy in the office.

     

    Previous studies have shown that there is a correlation between physical work environment factors, job satisfaction and productivity but inconsistent evidence for work environment and stress. This study showed significant relationship between the auditory privacy, job satisfaction and productivity but not between auditory privacy and stress, which corresponds to the previous studies.

     

    The improvements presented at the system group seminar was to introduce guidelines to reduce noise and divide the office into smaller offices. To improve the auditory privacy this study suggests that a combination of redeploying employees in the open-plan office, dividing the office in to smaller office areas and introduces guidelines of how the employees should behave in the open-plan office.

  • 41.
    Andersson, Magnus
    KTH, Superseded Departments, Physics.
    Development of a rotation sample holder with high angular resolution1999Report (Other academic)
  • 42.
    Andersson, Magnus
    KTH, Superseded Departments, Physics.
    The Oxford cryostat - a manual1991Report (Other academic)
  • 43.
    Andersson, Magnus
    KTH, Superseded Departments, Physics.
    User manual for the 4He cryostat with an 8 T superconducting coil1998Report (Other academic)
  • 44.
    Andronova, Natalia
    et al.
    KTH, Superseded Departments, Fibre and Polymer Technology.
    Finne, Anna
    KTH, Superseded Departments, Fibre and Polymer Technology.
    Albertsson, Ann-Christine
    KTH, Superseded Departments, Fibre and Polymer Technology.
    Fibrillar structure of resorbable microblock copolymers based on 1,5-dioxepan-2-one and epsilon-caprolactone2003In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 41, no 15, 2412-2423 p.Article in journal (Refereed)
    Abstract [en]

    The copolymerization of 1,5-dioxepan-2-one (DXO) and E-caprolactone, initiated by a five-membered cyclic tin alkoxide initiator, was performed in chloroform at 60 degreesC. Copolymers with different molar ratios of DXO (25, 40, and 60%) were synthesized and characterized. C-13 NMR spectroscopy of the carbonyl region revealed the formation of copolymers with a blocklike structure. Differential scanning calorimetry measurements showed that all the copolymers had a single glass transition between -57 and -49 degreesC and a melting temperature in the range of 30.1-47.7 degreesC, both of which were correlated with the amount of DXO. An increase in the amount of DXO led to an increase in the glass-transition temperature and to a decrease in the melting temperature. Dynamic mechanical thermal analysis measurements confirmed the results of the calorimetric analysis, showing a single sharp drop in the storage modulus in the temperature region corresponding to the glass transition. Tensile testing demonstrated good mechanical properties with a tensile strength of 27-39 MPa and an elongation at break of up to 1400%. The morphology of the copolymers was examined with polarized optical microscopy and atomic force microscopy; the films that crystallized from the melt showed a short fibrillar structure (with a length of 0.05-0.4 mum) in contrast to the untreated solution-cast films. (C) 2003 Wiley Periodicals, Inc.

  • 45.
    Angermund, Emma
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    Lindqvist, Emma
    KTH, School of Computer Science and Communication (CSC).
    Working with Time Management in IT Consulting: Developing a Time Management Strategy by Using Performance Management2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Time is in control of our everyday life and work life. Time is a valuable resource of which everyone possesses the same amount. In work life, time is important; it rules the workday and the tasks that are being performed. Time is even more significant within the consultancy industry, where worked time and competence is what is being delivered to the customers. Since time is of great importance for consulting firms, time management systems and time reporting become a crucial part of a consultant’s day. IT consulting firms spend lots of time and money on business systems, despite this the area of how time management and performance management are connected is relatively unexplored.

    This report aims to contribute to an enhanced understanding regarding why consultancy firms work with time management, and how data from time management systems could be used. The study will also investigate how the employees could be motivated to use the time management system in the extent that the managers wish, as well as important requirements on data from the time management system. These questions can together give answer to how time management can be aligned with performance management within an IT consultancy firm.

    The report is based on 14 interviews performed at five different IT consulting firms in the Stockholm area, a participant observation conducted at one of the participating companies, as well as a literature review. The study was performed during the spring of 2013.

    The study found that the main reason for IT consultant firms to report time is to gain decision support for invoices and salary payments. Being able to see overtime and flextime is something that is appreciated by the employees. Other identified areas of usage are forecasts and estimates, evaluations and follow-ups, utilization rate calculations, and employee care. Regular follow-ups, preferable weekly, are necessary for motivating the employees to work with time management. It is also important that the time management system is easy to use in order for it to generate relevant decision support.

    The study shows that to implement a successful time management strategy, the following aspects should be considered: (i) to not measure too much, (ii) to have clear communication and weekly deadlines, (iii) to make it simple, (iv) to create awareness among the employees, and (v) to have a time management system that mutually benefits the managers and the employees.

  • 46.
    ANSELMETTI, Romain
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    The Autonomous Vehicle: End of the Road, or the Beginning of A New Era?: Concept and Challenges of a Disruptive Innovation within the Automotive Industry2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The Autonomous Vehicle is about to enter the mass-market. The question is not about when it will happen but in which conditions, under which form or who will be the first car manufacturer to release an efficient and reliable final product.By now, the equation has not been solved, due to the high price of the technologies needed, the lack of solutions to provide a reliable network, and the necessity to change conventions established a long time ago in terms of responsibility of the driver.Depending on who is talking, the Autonomous vehicle is not only an evolution of a previous product, which is able to evaluate and to progressively transform into something different that we could call a self-driven car. This innovation is one step further and is challenging everything that was established until now in terms of objective criteria expected from a car. This is why some are calling this a disruptive innovation, or even a revolution, in the sense that it has the power to totally change the way we are interacting with our everyday transportation system.To enter into the market, this technology, this product, will have to overcome some challenges, on the technological side but also on the psychological side of his future clients.Therefore, this thesis research analyses why this innovation could be the future of the Automotive industry, where it is coming from, what are the challenges it will have to overcome, which will be the impacts, and the different possible scenarios.

  • 47.
    Anton Remirez, Raul
    et al.
    KTH, Superseded Departments, Energy Technology. University of Gävle, Sweden.
    Jonsson, Hans
    KTH, Superseded Departments, Energy Technology. University of Gävle, Sweden.
    Moshfegh, B.
    Modelling of EMC screens for radio base stations Part 1: Experimental parametric study2004In: ITherm 2004, Vol 1, IEEE , 2004, 463-470 p.Conference paper (Refereed)
    Abstract [en]

    Enclosing electronics in sealed metal boxes provides good electromagnetic shielding, but evidently restricts the air movement necessary for adequate cooling. In order to meet ElectroMagnetic Compatibility (EMC) requirements, a perforated plate (an EMC screen) must be used. The design of this screen must provide a sufficient free area ratio for the adequate airflow, but at the same time the holes must be small enough to block electromagnetic radiation. An experimental set-up that represents a Radio Base Station (RBS) subrack was built inside a wind tunnel. The airflow pattern and pressure drop through the EMC screen were investigated experimentally for different subrack geometries, screen porosities and velocities, and the recirculation zones were identified. The study was performed by means of pressure and velocity measurements, together with smoke visualization under isothermal conditions.

  • 48. Antoniou, Constantinos
    et al.
    Koutsopoulos, Haris N.
    KTH, School of Architecture and the Built Environment (ABE), Transport Science, Traffic and Logistics.
    Ben-Akiva, Moshe
    Chauhan, Akhilendra S.
    Evaluation of diversion strategies using dynamic traffic assignment2011In: Transportation planning and technology (Print), ISSN 0308-1060, E-ISSN 1029-0354, Vol. 34, no 3, 199-216 p.Article in journal (Refereed)
    Abstract [en]

    A framework for the evaluation of the effectiveness of traffic diversion strategies for non-recurrent congestion, based on predictive guidance and using dynamic traffic assignment, is presented. Predictive guidance is based on a short-term prediction of traffic conditions, incorporating user reaction to information and guidance. A case study of the Lower Westchester County network in New York State, using DynaMIT-P, is presented to illustrate the application of the framework. DynaMIT-P is capable of evaluating diversion strategies based on predicted conditions, which take into account drivers' response to traffic information. The case study simulates the operations of predictive variable message signs positioned in strategic locations. DynaMIT-P is calibrated for the study network and used to establish base conditions for two incident scenarios in the absence of advanced traveller information systems. The effectiveness of predictive diversion strategies is evaluated (using rigorous statistical tests) by comparing traffic conditions with and without diversion strategies. The empirical findings suggest that incident diversion strategies based on predictive guidance result in travel time savings and increased travel time reliability.

  • 49.
    Aparicio, Francisco
    et al.
    Consejo Superior de Investigaciones Científicas (Spain).
    Holgado, Miguel
    Univ. Politécnica de Madrid.
    Blaszczyk-Lezak, Iwona
    Instituto de Ciencia de Materiales de Sevilla.
    Borras, Ana
    Instituto de Ciencia de Materiales de Sevilla.
    Griol, Amadeu
    Univ. Politécnica de Valencia.
    Barrios, Carlos Angulo
    Univ. Politécnica de Valencia.
    Sohlström, Hans
    KTH, School of Electrical Engineering (EES), Microsystem Technology.
    Gonzalez-Elipe, Agustí­n R.
    Instituto de Ciencia de Materiales de Sevilla.
    Barranco, Angel
    Incorporation of luminescent nanometric films in photonic crystals and devices for the development of photonic sensors2010Conference paper (Refereed)
    Abstract [en]

    Dye molecules embedded in different matrices in the form of thin films are the basis of specific materials used for laser cavities, optical filters, optical gas sensors, etc. In the present communication we discuss a new methodology based on the remote microwave plasma assisted deposition of dye containing thin films that circumvent the above mentioned problems. It permits a tailored synthesis of optically active nanometric thin films containing dye molecules which are active as fluorescence emitters (i.e., coloured and fluorescent films). The principle of this new procedure is the partial polymerization of dye molecules that are evaporated over a substrate while exposed to a remote microwave Ar plasma. As a result of this process a polymeric thin film is produced in one step where some dye molecules keep intact their optical activity (although eventually, their optical response can be slightly modified by matrix effects). This methodology has been recently used for the deposition of novel plasma nanocomposites containing non-aggregated laser dyes to maximize the fluorescent emission of the materials and for the fabrication of optical NO2 sensing nanocomposites. To illustrate the possibilities of the technique we present here results for different fluorescent dye molecules, as perylene dyes, and several xanthene and oxazine derivative cationic dyes which are typically used as gain media in tuneable laser dyes. The luminescent, optical and sensing properties of these dye containing nanocomposites will be presented. These active optical layers are being developed for the fabrication of photonic sensor devices, optical filters and photonic chips (PHODYE EU Project). This is due to the full compatibility of the synthetic methodology with the present integrated microelectronic and optoelectronic technology. The possibilities for the fabrication of photonic devices integrating these active optical layers will be demonstrated. Especial attention will be paid to recent results about the incorporation of the luminescent films in photonic crystals and about the conformal growth of luminescent planar defects within artificial opals.

  • 50.
    ARKENSON, CAROLIN
    et al.
    KTH, School of Computer Science and Communication (CSC).
    STIPIC, ANNAMARIA
    KTH, School of Computer Science and Communication (CSC).
    Twitter and Choreography- A Sucessful Combination?2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    One of the most common social media platforms of today is Twitter, an open

    community where content easily could be spread by sharing so called tweets and

    where the relationship between users is not constrained by accepting the other user.

    This report discusses the complexity in merging social media and dance by studying a

    project which used crowdsourcing through Twitter to collect choreographic ideas for

    a new ballet piece.

    In order to examine Twitter as a tool in a creative process, a questionnaire was sent to

    Twitter users and email interviews were held with those responsible for the project of

    study. The questionnaire showed that most of the Twitter users enjoyed creating and

    being part of a creative process. However, some of those with an occupation within

    the dance world voiced concerns about untrained people creating choreography.

    From the interviews it was found that a lot of thought had to be put into the structure

    of the project and that the project’s main motivator was to inspire and create with the

    help of people around the world.

    It was found in the research that Twitter is a suiting platform for a crowdsourced

    project since a large and varying group of participants is reached. Twitter allows for

    the Twitter users to participate regardless of location or occupation as well as

    bringing good publicity to the dance world.

1234567 1 - 50 of 1282
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf