Endre søk
Begrens søket
1234567 101 - 150 of 1817
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 101. Bajones, Markus
    et al.
    Fischinger, David
    Weiss, Astrid
    Wolf, Daniel
    Vincze, Markus
    Puente, Paloma de la
    Körtner, Tobias
    Weninger, Markus
    Papoutsakis, Konstantinos
    Michel, Damien
    Qammaz, Ammar
    Panteleris, Paschalis
    Foukarakis, Michalis
    Adami, Ilia
    Ioannidi, Danai
    Leonidis, Asterios
    Antona, Margherita
    Argyros, Antonis
    Mayer, Peter
    Panek, Paul
    Eftring, Håkan
    Frennert, Susanne
    Hobbit: Providing Fall Detection and Prevention for the Elderly in the Real World2018Inngår i: Journal of Robotics, Vol. 2018, s. 1-20Artikkel i tidsskrift (Fagfellevurdert)
  • 102.
    Balaam, Madeline
    et al.
    Open Lab Newcastle University, UK.
    Hansen, Lone Koefoed
    Aarhus University.
    D’Ignazio, Catherine
    Emerson College.
    Simpson, Emma
    Newcastle university.
    Almeida, Teresa
    Open Lab Newcastle University, UK.
    Kuznetsov, Stacey
    Arizona State University.
    Catt, Mike
    Newcastle University.
    Juul Sondergaard, Marie Louise
    Dept of Digital Design and Information Studies, Aarhus University.
    Hacking Women’s Health2017Inngår i: CHI EA '17 Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems, Denver, Colorado, USA — May 06 - 11, 2017, ACM , 2017, s. 476-483Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The aim of this two-day workshop is to bring together a nascent community of researchers to share research, ideas, methods and tools that can encourage, inspire and strengthen those of us working on digital women's health. Our workshop aims to take a pro-active stance, offering participants the opportunity to critique, design and hack existing and new women's digital health experiences. Or, in other words, to get their hands dirty. Through our hack-led event we aim to face headon issues related to digital women's health, such as taboo, power and prejudice. This workshop will address current gaps in research and practice by enabling us to develop the confidence, networks and strategies that can facilitate researchers/designers/technologists to work within this space.

  • 103.
    Balamurugan, Kanagasabai
    et al.
    KTH, Skolan för bioteknologi (BIO), Teoretisk kemi och biologi.
    Natarajan Arul, Murugan
    KTH, Skolan för bioteknologi (BIO), Teoretisk kemi (stängd 20110512). KTH, Skolan för bioteknologi (BIO), Teoretisk kemi och biologi.
    Ågren, Hans
    KTH, Skolan för bioteknologi (BIO), Teoretisk kemi och biologi.
    Multistep Modeling Strategy To Improve the Binding Affinity Prediction of PET Tracers to A beta(42): Case Study with Styrylbenzoxazole Derivatives2016Inngår i: ACS CHEMICAL NEUROSCIENCE, ISSN 1948-7193, Vol. 7, nr 12, s. 1698-1705Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Positron emission tomography (PET) tracers play an important role in the diagnosis of Alzheimer's disease, a condition that leads to progressive dementia and memory loss. A high binding affinity and specificity of the PET tracers to amyloid oligomers and fibrils are crucial for their successful application as diagnostic agents. In this sense, it is essential to design PET tracers with enhanced binding affinities, which can lead to more precise and earlier detection of Alzheimer's disease conditions. The application of in silico methodology for the design and development of efficient PET tracers may serve as an important route to improved Alzheimer's disease diagnosis. In this work, the performance of widely used computational methods is explored for predicting experimental binding affinities of styrylbenzoxazole (SB) derivatives against a common amyloid protofibril. By performing docking, molecular dynamics, and quantum chemistry calculations in sequence their combined predictive performance is explored. The present work emphasizes the merits as well as limitations of these simulation strategies in the realm of designing PET tracers for Alzheimer's disease diagnosis.

  • 104. Baldoni, R.
    et al.
    Di Ciccio, C.
    Mecella, M.
    Patrizi, F.
    Querzoni, L.
    Santucci, G.
    Dustdar, S.
    Li, F.
    Truong, H. -L
    Albornos, L.
    Milagro, F.
    Rafael, P. A.
    Ayani, Rassul
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Rasch, Katharina
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Lozano, M. G.
    Aiello, M.
    Lazovik, A.
    Denaro, A.
    Lasala, G.
    Pucci, P.
    Holzner, C.
    Cincotti, F.
    Aloise, F.
    An embedded middleware platform for pervasive and immersive environments for-all2009Inngår i: 2009 6th IEEE Annual Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks Workshops, SECON Workshops 2009, IEEE , 2009, s. 161-163Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Embedded systems are specialized computers used in larger systems or machines to control equipments such as automobiles, home appliances, communication, control and office machines. Such pervasivity is particularly evident in immersive realities, i.e., scenarios in which invisible embedded systems need to continuously interact with human users, in order to provide continuous sensed information and to react to service requests from the users themselves. The SM4All project investigates an innovative middleware platform for inter-working of smart embedded services in immersive and person-centric environments, through the use of composability and semantic techniques for dynamic service reconfiguration. This is applied to the challenging scenario of private houses and home-care assistance in presence of users with different abilities and needs (e.g., young, able-bodied, aged and disabled). This paper presentes a brief overview of the SM4All system architecture.

  • 105. Bang, Martin
    et al.
    Liwång, Hans
    Influences on threat assessment in a military context2016Inngår i: Defense and Security Analysis, Vol. 32, nr 3, s. 264-277Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The anchoring effect is a well-studied subject. This article connects the effect with the rules-in-use within a military intelligence institution. Particularly the rules-in-use that dictate that an analyst takes his or hers starting point from recently conducted assessments of the specific area or threat. The threat assessment as well as the written assessment were affected. The results show that officers have an aversion to lower a previous given threat assessment. This gives that to understand risk assessment we not only need to understand the methods used, we also need to understand the institutions in which they are used. This is especially relevant for military intelligence as the assessments are conducted in an environment of high uncertainty.

  • 106. Barahona, Adrián
    et al.
    Pauletto, Sandra
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Medieteknik och interaktionsdesign, MID.
    Perceptual Evaluation of Modal Synthesis for Impact-Based Sounds2019Konferansepaper (Fagfellevurdert)
  • 107.
    Barbaranelli, Andreas
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Bro- och stålbyggnad.
    Wallin, Andreas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Bro- och stålbyggnad.
    Seismic Analysis of Norra Tornen: A Comparison Based on the Requirements in Eurocode 82019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    In Sweden, buildings are not designed to withstand earthquakes due to the rarity of an earthquake event and its consequential damage. However, the aim of this thesis was to study the seismic performance of some of the highest buildings in Stockholm, called Innovationen and Helix. The purpose of the study was to get an understanding of earthquake engineering for high rise buildings and to compare the behavior of the two towers during seismic action. In order to compare the two buildings and get an understanding of what will affect the seismic performance, Eurocode 8 was used. The Eurocode standard lists several properties that impacts the seismic resistance of buildings. One of the goals was to study how those factors influence the behavior of Innovationen and Helix and finally compare the results to each other in order to draw valid conclusions. The method to perform the analysis was a modal analysis using a finite element analysis program. The program used contains predefined response spectra’s based on Eurocode 8 which is used to define the seismic load acting on the structures. The extracted results are listed below: - Frequencies and mode shapes - Modal masses - Level and total masses - Accelerations - Displacements The conclusion of the study was that Innovationen and Helix have similar properties and some points from Eurocode 8 were better fulfilled by Helix and others by Innovationen: - Uniformity, symmetry and redundancy (Innovationen fulfills the requirements better than Helix) - Bi-directional resistance and stiffness (Innovationen fulfills the requirements better than Helix) - Torsional resistance and stiffness (Helix fulfills the requirements better than Innovationen) - Adequate foundation (Helix fulfills the requirements better than Innovationen) Of the two parameters studied, the height was the one with the most influence on seismic resistance.

  • 108.
    Barceló Bartrolí, Laura
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Marknadsföring och Entreprenörskap.
    The Design Thinking Principles in the Creation Process of User-Centered Value Propositions: An Insight into the Mobile Health Industry2018Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The healthcare and life sciences sectors are currently undergoing a transition towards becoming digitized. Mobile health (mHealth), a subset of digital health, offers many potential benefits to healthcare. Despite that, it has been reported that the majority of mHealth initiatives do not evolve beyond the pilot stage. A core reason seems to be the lack of user-centered value propositions in mHealth projects. Here, we evaluate if the use of the principles of design thinking (DT) can endorse the creation process of user-centered value propositions. For that, several scoping meetings with experts on topics of relevance were carried out, which helped define the scope, the methodology, and formulate the research question in the optimal direction. Interviews with the founders of four startups that operate in the mHealth industry constituted the basis of the findings, with the product or service development process as the central aspect. A framework for DT was employed to analyze the cases, which proposes five themes that should be considered throughout the process: User Focus, Problem Framing, Experimentation, Visualization and Diversity. Our research shows that the use of DT principles can help achieve more valuable outcomes (e.g. more user-centered value propositions), be more efficient and collaborate better. Nevertheless, more knowledge about DT is needed among entrepreneurs, as well as a more uniform consideration of the five themes of DT.

  • 109.
    Basso, Simone
    KTH, Skolan för teknikvetenskap (SCI), Fysik, Kärnkraftssäkerhet.
    Particulate Debris Spreading and Coolability2017Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    In Nordic design of boiling water reactors, a deep water pool under the reactor vessel is employed for the core melt fragmentation and the long term cooling of decay heated corium debris in case of a severe accident. To assess the effectiveness of such accident management strategy the Risk-Oriented Accident Analysis Methodology has been proposed. The present work contributes to the further development of the methodology and is focused on the issue of ex-vessel debris coolability.

    The height and shape of the porous debris bed are among the most important factors that determine if the debris can be cooled by natural circulation of water. The bed geometry is formed in the process of melt release, fragmentation, sedimentation and packing of the debris in the pool. Bed shape is affected by the coolant flow that induces movement of particles in the pool and after settling on top of the bed. The later one is called debris bed self-leveling phenomenon.

    In this study, the self-leveling was investigated experimentally and analytically. Experiments were carried out in order to collect data necessary for the development of a numerical model with an empirical closure. The self-leveling model was coupled to a model for prediction of the debris bed dryout. Such coupled code allows to calculate the time necessary to have a coolable configuration of the bed. The influence of input parameters was assessed through sensitivity analysis in order to screen out the less influential parameters.

    Results of the risk analysis are reported as complementary cumulative distribution functions of the conditional containment failure probability (CCFP).

    Sensitivity analyses identified: effective particle diameter and debris bed porosity as the parameters that provide the largest contribution to the CCFP uncertainty. It is found that the effect of the initial maximum height of the bed on the CCFP is reduced by the self-leveling.

  • 110. Battel, G. U.
    et al.
    Bresin, R.
    Analysis by synthesis in piano performance: A study on the theme of the Brahms’ ”Variations on a theme of Paganini” op. 351994Inngår i: Proceedings of the Stockholm Music Acoustic Conference - SMAC 1993, 1994, s. 69-73Konferansepaper (Fagfellevurdert)
  • 111. Battel, G. U.
    et al.
    Bresin, R.
    De Poli, G.
    Vidolin, A.
    Neural networks vs. Rules system: Evaluation tests of automatic performance of musical scores1994Inngår i: Proceedings of the International Computer Music Conference - ICMC 1994, 1994, s. 109-113Konferansepaper (Fagfellevurdert)
  • 112. Battel, Giovanni Umberto
    et al.
    Bresin, Roberto
    De Poli, Giovanni
    Vidolin, Alvise
    A Neural Networks Based System for Automatic Performance of Musical Scores1995Inngår i: Der Hörer als Interpret, 1995, Vol. 7, s. 99-112Konferansepaper (Fagfellevurdert)
  • 113. Battel, Giovanni Umberto
    et al.
    Bresin, Roberto
    De Poli, Giovanni
    Vidolin, Alvise
    Automatic performance of musical scores by means of neural networks: Evaluation with listening tests1993Inngår i: Colloquio di Informatica Musicale - X CIM, 1993, s. 97-101Konferansepaper (Fagfellevurdert)
  • 114.
    Bauer, F.
    et al.
    Physik-Department, Technische Universität München.
    Hällgren, Tomas
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Seidl, G.
    Department of Physics, Oklahoma State University.
    Discretized gravity in 6D warped space2007Inngår i: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 278, nr 1-3, s. 32-63Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We consider discretized gravity in six dimensions. where the two extra dimensions have been compactified on a hyperbolic disk of constant curvature. We analyze different realizations of lattice gravity on the disk at the level of an effective field theory for massive gravitons. It is shown that the observed strong coupling scale of lattice gravity in discretized five-dimensional flat or warped space can be increased if the latticized fifth dimension is wrapped around a hyperbolic disk that has a non-trivial warp factor. As an application, we also study the generation of naturally small Dirac neutrino masses via a discrete volume suppression mechanism and discuss briefly collider implications of our model.

  • 115. Becker, Holger
    et al.
    Hlawatsch, Nadine
    Haraldsson, Tommy
    KTH, Skolan för elektro- och systemteknik (EES), Mikro- och nanosystemteknik.
    van der Wijngaart, Wouter
    KTH, Skolan för elektro- och systemteknik (EES), Mikro- och nanosystemteknik.
    Lind, Anders
    Malhotra-Kumar, Surbi
    Turlej-Rogacka, Agata
    Goossens, Herman
    Microfluidic system for the identification of bacterial pathogens causing urinary tract infections2015Inngår i: Microfluidics, BioMEMS, and Medical Microsystems XIII, SPIE - International Society for Optical Engineering, 2015, Vol. 9320, artikkel-id 93200SKonferansepaper (Fagfellevurdert)
    Abstract [en]

    Urinary tract infections (UTIs) are among the most common bacterial infections and pose a significant healthcare burden. The growing trend in antibiotic resistance makes it mandatory to develop diagnostic kits which allow not only the determination of a pathogen but also the antibiotic resistances. We have developed a microfluidic cartridge which takes a direct urine sample, extracts the DNA, performs an amplification using batch-PCR and flows the sample over a microarray which is printed into a microchannel for fluorescence detection. The cartridge is injection-molded out of COP and contains a set of two-component injection-molded rotary valves to switch between input and to isolate the PCR chamber during thermocycling. The hybridization probes were spotted directly onto a functionalized section of the outlet microchannel. We have been able to successfully perform PCR of E. coli in urine in this chip and perform a fluorescence detection of PCR products. An upgraded design of the cartridge contains the buffers and reagents in blisters stored on the chip.

  • 116. Bellini, E
    et al.
    Capalldo, G
    Edström, Anders
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell arbetsvetenskap.
    Raffa, M
    Ricciardi, Max
    Zollo, G
     Strategic Paths of Academic Spin-Offs: A Comparative Analysis of Italian and Swedish Cases1999Inngår i: Proceedings from the 44th ICSB Conference, Naples June 20-23., 1999Konferansepaper (Annet vitenskapelig)
  • 117. Bellini, E
    et al.
    Edström, A
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell arbetsvetenskap.
    Raffa, M
    Ricciardi, M
    Zollo, G
    Growth Patterns of Academic Spin-offs: A comparison between southern Italy and western Sweden. .2000Inngår i: Piccola Impresa – Small Business, nr 1, s. 17-42Artikkel i tidsskrift (Fagfellevurdert)
  • 118. Belloni, V.
    et al.
    Ravanelli, R.
    Nascetti, Andrea
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Geoinformatik. University of Rome La Sapienza, Rome, Italy.
    Di Rita, M.
    Mattei, D.
    Crespi, M.
    Digital image correlation from commercial to FOS software: A mature technique for full-field displacement measurements2018Inngår i: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, International Society for Photogrammetry and Remote Sensing , 2018, Vol. 42, nr 2, s. 91-95Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In the last few decades, there has been a growing interest in studying non-contact methods for full-field displacement and strain measurement. Among such techniques, Digital Image Correlation (DIC) has received particular attention, thanks to its ability to provide these information by comparing digital images of a sample surface before and after deformation. The method is now commonly adopted in the field of civil, mechanical and aerospace engineering and different companies and some research groups implemented 2D and 3D DIC software. In this work a review on DIC software status is given at first. Moreover, a free and open source 2D DIC software is presented, named py2DIC and developed in Python at the Geodesy and Geomatics Division of DICEA of the University of Rome "La Sapienza"; its potentialities were evaluated by processing the images captured during tensile tests performed in the Structural Engineering Lab of the University of Rome "La Sapienza" and comparing them to those obtained using the commercial software Vic-2D developed by Correlated Solutions Inc, USA. The agreement of these results at one hundredth of millimetre level demonstrate the possibility to use this open source software as a valuable 2D DIC tool to measure full-field displacements on the investigated sample surface.

  • 119. Belson, Brandt A.
    et al.
    Semeraro, Onofrio
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Stabilitet, Transition, Kontroll.
    Rowley, Clarence W.
    Henningson, Dan Stefan
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Stabilitet, Transition, Kontroll.
    Feedback control of instabilities in the two-dimensional Blasius boundary layer: The role of sensors and actuators2013Inngår i: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 25, nr 5, s. 054106-1-054106-17Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We analyze the effects of different types and positions of actuators and sensors on controllers' performance and robustness in the linearized 2D Blasius boundary layer. The investigation is carried out using direct numerical simulations (DNS). To facilitate controller design, we find reduced-order models from the DNS data using a system identification procedure called the Eigensystem Realization Algorithm. Due to the highly convective nature of the boundary layer and corresponding time delays, the relative position of the actuator and sensor has a strong influence on the closed-loop dynamics. We address this issue by considering two different configurations. When the sensor is upstream of the actuator, corresponding to disturbance-feedforward control, good performance is observed, as in previous work. However, feedforward control can be degraded by additional disturbances or uncertainties in the plant model, and we demonstrate this. We then examine feedback controllers in which the sensor is a short distance downstream of the actuator. Sensors farther downstream of the actuator cause inherent time delays that limit achievable performance. The performance of the resulting feedback controllers depends strongly on the form of actuation introduced, the quantities sensed, and the observability of the structures deformed by the controller's action. These aspects are addressed by varying the spatial distribution of actuator and sensor. We find an actuator-sensor pair that is well-suited for feedback control, and demonstrate that it has good performance and robustness, even in the presence of unmodeled disturbances.

  • 120. Ben Dhaou, I.
    et al.
    Gia, T. N.
    Liljeberg, P.
    Tenhunen, Hannu
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektronik, Integrerade komponenter och kretsar.
    Low-latency hardware architecture for cipher-based message authentication code2017Inngår i: 2017 IEEE International Symposium on Circuits and Systems (ISCAS), Institute of Electrical and Electronics Engineers (IEEE), 2017, artikkel-id 8050840Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Cipher-based message authentication code, CMAC, is a NIST approved standard for checking message integrity and authentication. This work presents a low-latency AES architecture for CMAC. The architecture uses intensive parallel processing per round and takes advantage of the BRAM present in modern FPGA. Experimental results show that for typical IoT application, the proposed architecture has a latency of 10 clock cycles, consumes 1355 slices, 2 BRAMs and achieves a throughput of 3.8Gbps.

  • 121. Beretta, M.
    et al.
    Björk, Jennie
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Magnusson, Mats
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Produktinnovationsteknik.
    Moderating Ideation in Web-Enabled Ideation Systems2018Inngår i: The Journal of product innovation management, ISSN 0737-6782, E-ISSN 1540-5885, Vol. 35, nr 3, s. 389-409Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    While organizations increasingly implement web-enabled ideation systems to access the collective intelligence of their distributed employees, recent studies show that most attempts to use these systems underperform or fail. This article draws on a qualitative case study of the Ericsson system “Idea Boxes” to explore a novel approach to manage ideation based on the use of the moderator role. The aim of this study is to understand to what extent and how the introduction of moderators can contribute to a better management of web-enabled ideation systems and to overcome the shortcomings commonly associated with their use. The contribution of this study to innovation literature is threefold. First, it develops a conceptual framework that gives insights into the practices implemented by moderators to manage ideation, namely: (1) formulating an ideation strategy, (2) combining means for community building, and (3) formalizing the ideation process. It focuses on unfolding their key complementarities. Second, this study relates these practices to the shortcomings of web-enabled ideation systems with respect to the sourcing, filtering, and handling of employees' ideas. It discusses how the identified practices can help organizations address these shortcomings by stimulating sustained employee participation, increasing the quality and fit of the ideas generated, and ensuring their efficient selection and integration. Third, this article compares moderators to other innovation roles discussed in the new product development literature with the aim of broadening the future research agenda toward an investigation of emerging organizational roles having limited formal authority to manage innovation. The findings of this study provide valuable guidelines to managers to implement more sophisticated approaches for a better management of the ideation process through web-enabled ideation tools.

  • 122.
    BERG WINCENT, BOEL
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Gångavstånd för resor med elsparkcykel: En studie baserat på elsparkcykelaktören Voi Technology i Stockholm2019Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Electric scooters, or e-scooters as they also are called, were launched in California in USA as a bike share system, in 2017. A year later, in September 2018, the Swedish company Voi Technology launched the first e-scooters in Stockholm, Sweden. Bike share systems has been around since the 1960s but has grown substantially in the past 15 years. New technical solutions have solved past problems with theft and payment in bike shares. Since e-scooters are new, there is a lack of research and knowledge about practical use. The study aims to examine how long users of e-scooters walk to utilize the service. Travel data from Voi Technology is used to determine walking distance. The distance from the location where the app was opened to the location where the e-scooter trip begun was measured. The result was also compared the walking distance of other bike share systems and travelers of public transportation. The majority of e-scooter users walk less than 100 meters and 38 per cent walk less than 50 meters. The users have the shortest walking distance in the morning and the longest in the afternoon. During the weekend's users walk further than in weekdays. The users who travel longer distances with the e-scooters don’t walk further than other users. About a third of the users walk in the opposite direction of travel, to some extent, to catch an e-scooter. That indicates that the aim of the user in general seems to be to always have the shortest possible walking distance to the e-scooter.

  • 123.
    Bergeling, Rickard
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    Layer Management in Virtual Reality: An Explorative Technical Design Study2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Virtual Reality has once again emerged as a platform with great potential for exploratory research. An expectation for the next generation virtual reality platforms is to be used as a tool for graphical designers as a new way to access the virtual world and interact with digital content. Just as mobile applications are developed for smaller screens with touch capabilities and desktop applications for computer screens with the input of mouse and keyboard, the interfaces of VR applications need to be designed with the capabilities and limitations of the platform in mind.

    A common component in modern graphic editing software is layer management: having the final output of the application divided into sub-components. This thesis explores how layer management can best be implemented in room-scale Virtual Reality with a focus on selection, navigation and manipulation through an iterative design study.

    The study concludes that, to improve the learnability of a system, interactions should be based on real-world interaction for naturalistic tasks while drawing inspiration from desktop applications for more abstract tasks. Furthermore, the environment needs to be adjusted to the systems designated tasks as well as the physical characteristics of the user. Lastly, as previous studies have suggested, amplifying the movement of manipulated objects in relation to the movement of the controller decreases the required movement of the user, reducing fatigue and increasing the user’s reach. However, this amplification was perceived as a reduction in precision, which some users valued more than movement reduction. Therefore, the amplification factor should be adjusted in relation to the operation’s precision requirements.

    While directly applicable to layer management in VR, these findings could serve as guidelines for applications utilizing 2D content in a virtual environment, room-scale VR applications designed to perform abstract tasks, and productivity tools for Virtual Reality. 

  • 124. Bergqvist, J.
    et al.
    Tress, W.
    Forchheimer, Daniel
    KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Nanostrukturfysik.
    Melianas, A.
    Tang, Z.
    Haviland, David B.
    KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Nanostrukturfysik.
    Inganäs, O.
    New method for lateral mapping of bimolecular recombination in thin-film organic solar cells2016Inngår i: Progress in Photovoltaics, ISSN 1062-7995, E-ISSN 1099-159X, Vol. 24, nr 8, s. 1096-1108Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The best organic solar cells are limited by bimolecular recombination. Tools to study these losses are available; however, they are only developed for small area (laboratory-scale) devices and are not yet available for large area (production-scale) devices. Here we introduce the Intermodulation Light Beam-Induced Current (IMLBIC) technique, which allows simultaneous spatial mapping of both the amount of extracted photocurrent and the bimolecular recombination over the active area of a solar cell. We utilize the second-order non-linear dependence on the illumination intensity as a signature for bimolecular recombination. Using two lasers modulated with different frequencies, we record the photocurrent response at each modulation frequency and the bimolecular recombination in the second-order intermodulation response at the sum and difference of the two frequencies. Drift-diffusion simulations predict a unique response for different recombination mechanisms. We successfully verify our approach by studying solar cells known to have mainly bimolecular recombination and thus propose this method as a viable tool for lateral detection and characterization of the dominant recombination mechanisms in organic solar cells. We expect that IMLBIC will be an important future tool for characterization and detection of recombination losses in large area organic solar cells.

  • 125.
    Bergqvist, Leo
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Medieteknik och interaktionsdesign, MID.
    Inkeri Dimle, Okra Livia
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Medieteknik och interaktionsdesign, MID.
    Användning av koldioxidbudgetar för att motivera minskning av koldioxidutsläpp2019Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The problem of rising temperatures and climate change is of great importance to all life. It has been made a global target by the UN and 194 countries has signed the Paris agreement which states a goal of keeping average global temperature raises two degrees below pre-industrial temperatures. Despite this, it is not clear what needs to be done. One thing for sure is that greenhouse gas emissions and ways to lessen them must be communicated in a concrete way in order to influence people and help fight climate change. This study explored how carbon budgets could be a tool for making greenhouse gas emissions less of an abstract concept. The study also examined how the implementation intentions-model could be used for increasing motivation in implementing behaviours in order to motivate reducing emissions of students. The focus of the study was to motivate participants to decrease consumption of aerial transportation and meat as these were ruled as important sources of emission for students.

    The study showed statistically significant results of whether these methods can be used in influencing participants behaviours.

  • 126.
    Bergström, Amanda
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC).
    Bengtsson, Olivia
    KTH, Skolan för datavetenskap och kommunikation (CSC).
    Låter du andra styra din identitet på Facebook?2017Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Sociala medier har växt oerhört mycket den senaste tiden, både till antalet användare och tiden som spenderas på de olika sociala medierna. Facebook är idag det sociala mediet som har flest användare i världen. I Sverige besöker 82% av befolkningen i åldersspannet 16 till 25 år Facebook dagligen. Sociala medier har  en stor påverkan på människors liv och påverkar hur unga människor formar sin identitet.

    I denna rapport har vi genomfört ett antal intervjuer för att försöka besvara frågeställningen: “Vilka olika känslor väcks hos Facebook-användare mellan 20-25 år i Sverige när någon annan påverkar deras profil genom tidslinjeinlägg och taggar?”

    Studien visar på att känslan varierar mellan intervjudeltagarna. Majoriteten var positiva till att inkludera vänner i deras sociala identitet på Facebook. Dock ville de samtidigt vara så pass anonyma att de kände att de hade kontroll över sin identitet som de presenterade online.

  • 127.
    Bernabini, Alberto
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Entreprenörskap och Innovation.
    International Public-Private-Partnerships for startups: an exploratory case study of the diffusion of eco-innovations2016Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The researcher has investigated what factors influence a startup in an international public-private-partnership (PPP). The researcher has designed an exploratory study with a case study on Greenely, which is a Stockholm-based startup that has developed an application to monitor the household’s electricity consumption. The theoretical framework covers topics such as the diffusion of innovations (in particular eco-innovations in the form of smart meters in Europe), business models, the Business Model Canvas, and public-private-partnerships. The researcher conducted semistructured interviews with employees of the municipality of Cesena, Italy and with employees of Greenely, which is interested in expanding its offerings to Italy via partnerships. This study has shown that the factors that should influence a  tartup in an international PPP are, mainly, five: Funding, Language and cultural identity, Timeline, Common vision and Bureaucracy. The factors “Funding” and “Common vision”, in particular, influence the PPP the most.

  • 128. Bertoni, Andrea
    et al.
    Bresin, Roberto
    Real-time musical rhythm tapping1995Inngår i: Colloquio di Informatica Musicale - XI CIM, 1995, s. 185-188Konferansepaper (Fagfellevurdert)
  • 129.
    Beskow, Cecilia
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell arbetsvetenskap.
    Norell Bergendahl, Margareta
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).
    Nya produkter och tjänster.1999Inngår i: MTO Forskningsperspektivet / [ed] Ahltin, NUTEK , 1999Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 130.
    BHANA, MOAAJ
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Trajectory generation for safe overtaking maneuver inautonomous vehicles: Evaluated in lane merging scenario utilizing a trajectory planner2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

     More than 1.2 million people die each year due to road traffic injuries [1]. In order to reduce traffic accidents and human errors, autonomous vehicles is been the subject of intense research. To improve the driving experience, automotive companies have developed Advanced Driver Assistance Systems (ADAS) such as Adaptive Cruise Control (ACC) and Lane Keeping Aid (LKA) which aim to make driving safer and more comfortable. One particularly interesting maneuver is the lane change. Lane change maneuver is one of the riskiest maneuvers that a driver has to perform on a highway, and can be perceived as challenging since it involves changes in both the longitudinal and lateral velocities, direction and as well as movement in the presence of other moving vehicles. This thesis seeks to evaluate how different prediction model of the trajectory planner will affect collision risk, comfort and result in an increasing rate of successful overtakes. An trajectory-planning algorithm will be reliable in making smarter decisions for performing a safe overtaking maneuver’s and constantly generate discrete trajectory profile with respect to the parameters of the vehicle in front. Future motion is predicted using prediction models linking control inputs, vehicle properties and external conditions to the evolution of the state of the vehicle. The vehicle should be able to avoid collisions at the point of convergence where two lane road merges into a single lane road and therefore, motion only in the longitudinal direction is considered for the evaluation. The prediction model chosen for this thesis is constant acceleration (CA) and constant velocity (CV). The project is part of a large EU-project called SafeCOP (Safe Cooperating CyberPhysical Systems) usingWireless Communication which aims at developing a complete prototype of an intelligent transport system. A great amount of trajectory generation techniques have been surveyed and quartic polynomial is selected for trajectory generation as it has many benefits of having a low computational cost and the continuous concatenation of curves is possible. It is important in the trajectory planner to cancel out trajectories which would dynamically not be feasible and result in an increase risk of collision with the surrounding vehicle. The two chosen prediction models were evaluated for three different scenarios on which they are tested and their results is compared. For the different scenarios addressed in this thesis Constant Acceleration (CA) prediction model gave better result when compared to Constant Velocity (CV) prediction model and had an lower risk of collision which increases the number of successful overtakes. While doing so the jerk dynamic constraints were always considered to ensure that the trajectory generated are within the comfort zone of the passenger.

  • 131. Bhattacharya, K.
    et al.
    El-Sayed, R.
    Andón, F. T.
    Mukherjee, S. P.
    Gregory, J.
    Li, H.
    Zhao, Yinchen
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Material- och nanofysik, Funktionella material, FNM.
    Seo, W.
    Fornara, A.
    Brandner, B.
    Toprak, Muhammet Sadaka
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Material- och nanofysik, Funktionella material, FNM.
    Leifer, K.
    Star, A.
    Fadeel, B.
    Lactoperoxidase-mediated degradation of single-walled carbon nanotubes in the presence of pulmonary surfactant2015Inngår i: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 91, s. 506-517Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Carbon nanotubes (CNTs) may elicit inflammatory responses following pulmonary exposure. Conversely, enzymatic biodegradation of CNTs by inflammatory cells has also been reported. The aim of this study was to study the degradation of oxidized single-walled CNTs (ox-SWCNTs) by lactoperoxidase (LPO), a secreted peroxidase present in the airways, and whether pulmonary surfactant affects this biodegradation. To this end, ox-SWCNTs were incubated in vitro with recombinant bovine LPO + H<inf>2</inf>O<inf>2</inf> + NaSCN in the presence and absence of porcine lung surfactant (Curosurf®) and biodegradation was monitored using UV-Vis-NIR spectroscopy, Raman spectroscopy, and scanning electron microscopy. The interaction of recombinant LPO with bundles of ox-SWCNTs was confirmed by atomic force microscopy. Cell-free biodegradation of ox-SWCNTs was also observed ex vivo in murine bronchoalveolar lavage fluid in the presence of H<inf>2</inf>O<inf>2</inf> + NaSCN. Our study provides evidence for biodegradation of ox-SWCNTs with a lung surfactant 'bio-corona' and expands the repertoire of mammalian peroxidases capable of biodegradation of ox-SWCNTs. These findings are relevant to inhalation exposure to these materials, as LPO serves as an important component of the airway defense system.

  • 132.
    Bijman, Nicolaas Peter
    KTH, Skolan för elektroteknik och datavetenskap (EECS).
    Exploring affordances of tangible user interfaces for interactive lighting2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This paper explores interaction with lighting through a tangible user interface (TUI). In a TUI the physical object and space around it are part of the interface. A subset of tangible interaction called spatial interaction is the main focus of this paper. Spatial interaction refers to translation, rotation or location of objects or people within a space. The aim of this paper is to explore the relation between spatial inputs and lighting outputs based on different design properties.

    A user test is set up to explore the effect that design properties of a TUI have on the lighting output that participants map to spatial inputs. The results of the conducted user test indicate that communicating affordances to the user is an important factor when designing couplings between spatial inputs and lighting outputs. The results further show that the shape of the interface plays a central role in communicating those affordances and that the overlap of input and output space of the interface improves the clarity of the coupling.

  • 133.
    Biltmo, Anders
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Statics, Domain Structure and Dynamics in the Dilute Dipolar Magnet LiHoF42009Doktoravhandling, med artikler (Annet vitenskapelig)
  • 134.
    Biltmo, Anders
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Henelius, Patrik
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Kondenserade materiens teori.
    Glauber Dynamics of Dilute Ising DipolesManuskript (preprint) (Annet vitenskapelig)
  • 135.
    Biltmo, Anders
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Henelius, Patrik
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Kondenserade materiens teori.
    Low-temperature properties of the dilute dipolar magnet LiHoxY1-xF42008Inngår i: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 78, nr 5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We analyze recent experiments on the dilute rare-earth compound LiHoxY1-xF4 in the context of an effective Ising dipolar model. Using a Monte Carlo method we calculate the low-temperature behavior of the specific heat and linear susceptibility and compare our results to measurements. In our model the susceptibility follows a Curie-Weiss law at high temperature, X similar to 1 / (T- T-cw), with a Curie-Weiss temperature that scales with dilution, T-cw similar to x, consistent with early experiments. We also find that the peak in the specific heat scales linearly with dilution, C-max(T)similar to x, in disagreement with recent experiments. This difference could be caused by the hyperfine interaction which is not included in our calculation. Experimental studies do not reach a consensus on the functional form of the susceptibility and specific heat, and in particular, we do not see reported scalings of the form X similar to T-0.75 and X similar to exp(-T/T-0). Furthermore, we calculate the ground-state magnetization as a function of dilution and re-examine the phase diagram around the critical dilution x, = 0.24 +/- 0.03. We find that the spin-glass susceptibility for the Ising model does not diverge below x, while some recent experiments give strong evidence for a stable spin-glass phase in LiHo0.167Y0.833F4.

  • 136.
    Biltmo, Anders
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Henelius, Patrik
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Kondenserade materiens teori.
    Phase diagram of the dilute magnet LiHoxY1-xF42007Inngår i: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, nr 5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We study the effective long-range Ising dipole model with a local exchange interaction appropriate for the dilute magnetic compound LiHoxY1-xF4. Our calculations yield a value of 0.12 K for the nearest-neighbor exchange interaction. Using a Monte Carlo method, we calculate the phase boundary T-c(x) between the ferromagnetic and paramagnetic phases. We demonstrate that the experimentally observed linear decrease in T-c with dilution is not the simple mean-field result, but a combination of the effects of fluctuations and the exchange interaction. Furthermore, we find a critical dilution x(c)=0.21(2), below which there is no ordering. In agreement with recent Monte Carlo simulations on a similar model, we find no evidence of the experimentally observed freezing of the glassy state in our calculation. We apply the theory of Stephen and Aharony to LiHoxY1-xF4 and find that the theory does predict a finite-temperature freezing of the spin glass. Reasons for the discrepancies are discussed.

  • 137.
    Biltmo, Anders
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
    Henelius, Patrik
    KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Kondenserade materiens teori.
    The ferromagnetic transition and domain structure in LiHoF42009Inngår i: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 87, nr 2Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Using Monte Carlo simulations we verify that the rare-earth compound LiHoF4 is a very good realization of a dipolar Ising model. With only one free parameter our calculations for the magnetization, specific heat and inverse susceptibility match experimental data at a quantitative level in the 0.5-3 kelvin range, including the ferromagnetic transition at 1.53 K. Using parallel tempering methods and reaching system sizes up to 32000 dipoles with periodic boundary conditions, we are able to give evidence of the logarithmic corrections predicted in renormalization group theory. Due to the long range and angular dependence of the dipolar model, sample shape and domains play a crucial role in the ordered state. We consider surface corrections to Griffiths's theorem, which arise infinite macroscopic samples and lead to a theory of magnetic domains. We find a domain wall energy of 0.059 erg/cm(2) and predict that the ground-state domain structure for cylinders with a demagnetization factor N > 0 consists of thin parallel sheets of opposite magnetization, with a width depending on the demagnetization factor.

  • 138.
    BIONDO VERDINI, YASMIN
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Bro- och stålbyggnad.
    A theoretical study of the variation in the modal properties of a road bridge exposed to scour2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    With the advent of climate change witnessed in past decades, consequences havebeen felt globally. One of short term effects from climate change includes theincrease of weather disasters and changes in the frequency of extreme events,which can cause heavier precipitation and increased risk of land sliding anderosion. One particular type of erosion is scour, in which soil material is removedfrom around a foundation caused by the action of water and it is known to to beone of the most predominant causes of bridge failure.Once soil is removed around the bridge pier, change in boundary conditions mayoccur, which could possibly lead to a change in the flexibility of the foundationand the stiffness and damping of the whole structure may alter.The analysis of the existing bridge was done through the construction of aFE model, in which springs and dampers were introduced to represent thefoundation. The stiffness and damping coefficient of those elements weredetermined trough impedance functions obtained from soil-structure interactionanalysis.The present project has shown that a possible noticeable change is expected tohappen in the first, third, fourth and sixth bridge’s natural frequencies, whichcould be used as a guideline on where to position accelerometers for possible fieldtests and measurements. Also, the study evidenced that deep level of scour isneeded in order to identify changes in the eigenfrequency.

  • 139.
    Birgersson, Henrik
    KTH, Tidigare Institutioner, Kemiteknik.
    Development of a regeneration procedure for commercial automotive three-wy catalysts2004Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Car exhaust catalysts were introduced in the early 1980’s, to limit the release of pollutants such as hydrocarbons, carbon monoxides and nitrogen oxides. These catalysts contain noble metals such as palladium (Pd), platinum (Pt) and rhodium (Rh) and are able to simultaneously abate all three of the above-mentioned pollutants, hence the name three-way catalyst (TWC). The exposure to high temperatures (800-1000 °C) during operation and the presence of additives in petrol such as lead, calcium, silicon, magnesium, manganese, chromium, sulphur and phosphorus will after a certain time start to lower the overall effectiveness of the catalyst. These effects are either of a mechanical or a chemical nature. High temperatures reduce the active area by causing the noble metals to agglomerate and sinter whereas the additives alter the activity by either fouling the pores of the support material (phosphorus) or by interacting with the metals (sulphur and lead).

    The main objective of this work was to develop a method to redisperse the catalytically active sites, comprising Pd, Pt and Rh on the washcoat surface, in an effort to regain lost catalyst activity. For this purpose, a wide spectrum of different commercial car exhaust catalysts containing varying noble metal loadings, aged under various driving conditions and with mileages ranging from 30 to 100 000 km were evaluated.

    The influence of a thermal treatment in a controlled gas atmosphere, such as oxygen or hydrogen and a redispersing agent, e.g. chlorine, on the activity of TWC was investigated by means of laboratory-scale activity measurements. Several complementary characterisation methods such as SEM/TEM, XRD, BET and TPR were used to verify the effects of the regeneration treatments on the catalyst morphology (Paper I). Partial regeneration of catalyst activity and noble metal dispersion was achieved after thermal treatment in an oxygen-chlorine rich atmosphere at temperatures below 500 °C.

    Finally, an investigation of the effects of an oxy-chlorine thermal treatment for regeneration of a ‘full-scale’ commercial automotive three-way catalyst was performed. Catalyst activity and performance prior to and after the oxy-chlorine thermal treatment was measured on a test vehicle in accordance with the European driving cycle (EC2000). The catalyst surface was further characterised using XRD and EDX (Paper II). Improved catalyst activity for a high mileage catalyst could be observed, with emissions lowered by approximately 30 to 40 vol% over the EC2000 driving cycle

  • 140.
    BIRGERSSON, KRISTOFFER
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    GRANATH, PHILIP
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Improving Software-as-a-Service Sales by Managing the Knowledge of Change Agents: A Case Study of an IT-company in a Servitization Transition2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Servitization describes the trend amongst companies of supplementing tangible product offerings with services. A case in point is the cloud computing which represents a paradigm shift of servitization in the IT industry as it allows physical products to be delivered entirely remotely as a service. Software-as-a-Service (SaaS) constitutes a delivery business model of cloud computing which allows customers to access a supplier's application through a cloud infrastructure and is seen as a disruptive innovation. Despite the growing market for cloud computing services, the concept is claimed not to be very understood by many businesses. When transitioning from product-oriented to service-oriented value propositions, successful companies have for instance put efforts on the education of their sales personnel. Such employees could be seen as change agents whose goal is to influence the adoption decision making processes of the organization’s clients. Furthermore, as economies have become more knowledge-intensive, Knowledge management has become more critical. Previous research has put little attention to how Knowledge management relates to the diffusion rate of innovations. This study, therefore, explores how management of change agents' knowledge can facilitate the mediation of innovations. A case study was conducted of an IT company experiencing a servitization transition towards SaaS offerings to achieve the purpose of this study. The study is delimited to the diffusion of SaaS as an innovation within the financial industry in Sweden. 12 employees within the Case Company and six clients were interviewed regarding the subjects previously mentioned. The results suggest that the mediation of SaaS is done through personal communication, presentations, and distribution of sales material. The study has found that change agents need to be clear in their mediation efforts of SaaS solutions as the understanding of what SaaS includes sometimes differs between clients and suppliers. Furthermore, customers considered SaaS solutions for systems that they view as not being directly value-adding and for those systems they prefer standardization as it allows cost-efficiency. SaaS allows multi-tenant environments and is therefore suitable for standardized offerings, as standardization corresponds well to the business logic appropriate for a codification Knowledge Management strategy. The Case Company already conducts a codification strategy. However, the finding of this study suggests that they should strengthen it since a focused KM strategy is preferable to attain more of its benefits and to increase the organizational knowledge creation capabilities. Conducting a codification strategy is something they have good capabilities of pursuing and is suggested to facilitate the change agents' mediation of innovations. Sales material at the Case Company is identified as dependent on personal performance and standardizing the material would thereby ensure an even quality. Making a variety of standardized material easily accessible would further allow the change agents to select material with appropriate messages aimed at specific types of customers, which is important since the customers are found to have different preferences

  • 141.
    Birkie, Seyoum Eshetu
    KTH, Skolan för industriell teknik och management (ITM), Hållbar produktionsutveckling (ML). KTH Royal Institute of Technology.
    Towards resilient and sustainable production systems: a resource orchestration perspective2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Research orchestration (RO) perspective argues that resource orchestration actions are needed to develop unique set of capabilities to effectively implement strategies at different hierarchies. This study sets out to provide a resource orchestration perspective to provide capabilities-based explanation as to why firms having “similar” resources could differ in obtaining competitive performance based on existing empirical studies. The initial part of the study with review of literature indicates that: (i) RO provides a relevant view to explain relationship of resilience and sustainability in manufacturing, and (ii) creating fit rather than linear benefit, should be the aim of resource investments.

  • 142.
    Birkie, Seyoum Eshetu
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Management. Politecnico Di Milano.
    Trucco, Paolo
    Politecnico di Milano.
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Management.
    Disentangling core functions of operational resilience: A critical review of extant literature2014Inngår i: International Journal of Supply Chain and Operations Resilience, ISSN 2052-8698, Vol. 1, nr 1, s. 76-103Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This study identifies and systematically reviews the literature on resilience in management research in order to characterise operational resilience. We argue that operational resilience provides an integrative view on different resilience perspectives in business (supply chain, business continuity, infrastructure, organisational, strategic). Using the resource-based view and particularly dynamic capabilities perspective as theoretical lenses, operational resilience is discussed in relation to the core business processes of an enterprise. Five core functions (sense, build, reconfigure, re-enhance, sustain) are identified from literature and discussed taking into account desired and undesired consequences of uncertainties. Moreover, operational resilience is operationalised using routines pertaining to the identified core functions. The proposed operational resilience core functions are further scrutinised using two case examples. Future research is suggested to validate the identified core functions and to use them for empirical analysis, including investigation of relationships with operations management paradigms such as lean thinking.

  • 143.
    Björklund, Rickard
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC).
    Weinz, Axel
    KTH, Skolan för datavetenskap och kommunikation (CSC).
    Media och Multitasking: En studie om utbildningspodcast och träning2017Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    I och med ny medieteknik samt en allt mer uppkopplad och stressad värld har det blivit vanligare med multitasking. Tidigare forskning visar att 90 procent av befolkningen multitaskar någon gång varje dag. Detta trots att multitasking visats leda till både stress och försämrad prestationsförmåga i de aktiviteter man arbetar med, särskilt i samband med inlärning. Samtidigt har tidigare forskning visat att träning förbättrar flera funktioner i hjärnan kopplat till inlärning. I denna studie undersöktes om multitasking, träning samtidigt som inlärning, kan utnyttjas för att förbättra inlärningen. 14 studenter deltog i en experimentell studie där två lika stora grupper fick lyssna på en podcast antingen springandes eller sittandes och sedan besvara ett test bestående av 13 frågor om podcastens ämne.

    Resultatet visar att skillnaden i inlärning från podcast mellan deltagare som suttit eller sprungit medan de lyssnat på podcasten är liten. Studiens resultat indikerar på en viss fördel för gruppen som satt still under testet då de i medeltal fick tio rätt på testet om podcastens ämne medan motsvarande siffra var nio för deltagarna som sprang. Men med tanke på antalet deltagare i studien är skillnaden inte tillräckligt stor för att dra slutsatsen att inlärning under träning påverkas negativt.

  • 144. Björkman, M.
    et al.
    Ståhl, J. -E
    Wang, Lihui
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Editorial2014Inngår i: International Journal of Manufacturing Research, ISSN 1750-0591, Vol. 9, nr 1, s. 1-3Artikkel i tidsskrift (Fagfellevurdert)
  • 145.
    Björlin Svozil, Louise
    KTH, Skolan för industriell teknik och management (ITM), Lärande.
    Beslutsgrund: en studie av utbildningsval bland kvinnliga elever på gymnasieskolans Naturvetenskaps- och Teknikprogram2018Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Ingenjörsutbildningar i Sverige har på ungefär hundra år gått från att enbart ta in män till en andel av 36 procent kvinnliga studenter. Även om en jämställd könsfördelning går framåt är andelen kvinnor på vissa program så låg som 16 procent. Den största rekryteringsbasen till ingenjörsutbildningar är gymnasieskolans Naturvetenskapsprogram (NV) och Teknik-program (TE). Grundad teori (GT) användes som metodansats när kvinnliga elever på NV och TE intervjuades för att undersöka vad de upptas av när de står inför sina studieval. Ett brett spektrum av anledningar som kan sammanfattas i kärnkategorin Beslutsgrund visade att eleverna vägde in bland annat arbetsmarknad, behörighet till universitet och högskola, en utbildnings rankning, förväntad social tillhörighet, den upplevda självförmågan, sina betyg, ett undvikande av ett skolämne de inte gillade, om en utbildning leder till den karriär de vill ha, arbetsbelastning samt arbetsbelastning i relation till behörighet. Studien visade också att metodansatsen GT kan användas i ett examensarbete och att det finns utmaningar och möjligheter med denna kombination.

  • 146.
    Björn, Erik
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    A circular production of fish and vegetables in Guatemala: An in-depth analysis of the nitrogen cycle in the Maya Chay aquaponic systems2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This study was done with the aim of deepening the understanding of the Maya Chay aquaponic systems. To meet the aim, a literature study on aquaponics, with an emphasis on the nitrogen metabolism in such systems, was conducted. Furthermore, a deep investigation of the specific Maya Chay systems was made to understand how these systems might be different from the general aquaponic designs. Finally, two nitrogen balances were developed with the purpose of examining the dynamics of the nitrogen transformations in two Maya Chay aquaponic systems. The measurements for the nitrogen balances was made between Mars 2017 to July 2017, and the model for the nitrogen balances evaluated the amount of nitrogen as:

    i) nitrogen input to the system through the feed,

    ii) nitrogen assimilated by the fish and the plants,

    iii) nitrogen accumulated in the sludge, and

    iv) nitrogen lost to the atmosphere through denitrification and similar processes such as anammox.

    The resulting nitrogen balances showed some interesting differences in the dynamics of nitrogen distribution. In the smaller Maya Chay XS system in Antigua, only 36 % of the nitrogen input was assimilated by the fish (30 %) and the plants (6 %) and 64 % of the nitrogen input could be regarded as lost, either to the atmosphere (46 %) or in the sludge (18 %). The other nitrogen balance showed that the distribution of nitrogen in the Maya Chay S system in Chinautla is much more efficient in taking care of the nitrogen input. In this system 70 % was assimilated by the fish (33 %) and the vegetables (37 %) and the remaining 30 % was lost, either to the atmosphere (14 %) or in the sludge (16 %).

    The nitrogen balances also showed that both systems are almost equally efficient in terms of nitrogen assimilation by the fish, and that the big differences lie in the rate of nitrogen assimilation by the plants (6 % vs. 30 %) and in the nitrogen loss to the atmosphere (46 % vs. 14 %). A likely explanation for these differences is the difference in design of the vegetable beds, where the less efficient system in Antigua has a large surface area for the vegetable bed, but only a small portion of this could be utilized for vegetable growth. Furthermore, a consequence of the larger surface is a larger anoxic zone in the bottom of the vegetable bed, which promotes the growth of denitrifying and anammox bacteria. These kinds of bacteria convert the dissolved ammonia, nitrite and nitrate to gas forms of nitrogen, such as nitrogen gas and nitrous oxide and thus nitrogen is lost from the system to the atmosphere.

    Finally, this study also showed a great difference in the ratio of vegetable to fish production between the systems, where the ratio was 0.43 in Antigua and 2.7 in Chinautla. This ratio further indicates the difference in design between the systems, especially regarding the vegetable beds, has an impact on how well they perform, both in terms in economic and productivity terms, but also in terms of the release of greenhouse gases (nitrous oxide). It can therefore be concluded that the original design of the Maya Chay system (i.e. the Chinautla system) is the preferable one.

    Even though the accuracy of the measurements in the experiments could be improved for future studies, this study has demonstrated the value of making nitrogen balances for aquaponic systems. Nitrogen balances increase the knowledge of the performance of the system and they increase the understanding of the dynamics of nitrogen transformations that takes place in the system. This knowledge can then be utilized to adjust the design and/or verify if either the aquaculture or hydroponic system is properly designed.

  • 147.
    Bleijenbergh, Inge
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Holgersson, Charlotte
    Ryan, Irene
    Diversity, diversity management and identity in organizations2016Inngår i: Equality, Diversity and Inclusion, ISSN 2040-7149, E-ISSN 2040-7157, Vol. 35, nr 1, s. 2-4Artikkel i tidsskrift (Annet vitenskapelig)
  • 148.
    Blennow, Mattias
    KTH, Skolan för teknikvetenskap (SCI), Fysik.
    Matter and damping effects in neutrino mixing and oscillations2005Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This thesis is devoted to the study of neutrino physics in general and the study of neutrino mixing and oscillations in particular. In the standard model of particle physics, neutrinos are massless, and as a result, they do not mix or oscillate. However, many experimental results now seem to give evidence for neutrino oscillations, and thus, the standard model has to be extended in order to incorporate neutrino masses and mixing among different neutrino flavors.

    When neutrinos propagate through matter, the neutrino mixing, and thus, also the neutrino oscillations, may be significantly altered. While the matter effects may be easily studied in a framework with only two neutrino flavors and constant matter density, we know that there exists (at least) three neutrino flavors and that the matter density of the Universe is far from constant. This thesis includes studies of three-flavor effects and a solution to the two-flavor neutrino oscillation problem in matter with an arbitrary density profile.

    Furthermore, there have historically been attempts to describe the neutrino flavor transitions by other effects than neutrino oscillations. Even if these effects now seem to be disfavored as the leading mechanism, they may still give small corrections to the neutrino oscillation formulas. These effects may lead to erroneous determination of the fundamental neutrino oscillation parameters and are also studied in this thesis in form of damping factors.

  • 149.
    Blidholm, Gustaf
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Johnson, Mathias
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    The adoption of distributed ledger technology in trade and export finance operations of Swedish banks2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Centralized data storage and reconciliation by trusted intermediaries has historically put financial systems in the hands of a single central parties. The emergence of bitcoin and blockchain, combined with the 2008 financial crisis, has shifted the Swedish financial sector’s traditional perspectives on democratization, centralization, transparency and automation. Trade and export finance is one of many sectors investigating how blockchain and distributed ledger technology can be used other than as a digital currency system. Swedish trade and export finance connects importers, exporters, banks, credit providers, customs, and transporters into a fragmented and complex process with many stakeholders. Sweden further has a history of quickly adopting technological innovations. Banks therefore face a dynamic environment and an inconsistent, manual operative process that removes profitability incentives in providing small enterprises with credit. The adoption of DLT could provide efficiency gains and cost savings in administration, communication, reconciliation and accounting. In this thesis, the costs, benefits, and remaining barriers of implementing distributed ledger technology in Swedish trade finance are identified. Further, Swedish contextual factors’ effect on the rate of adoption is addressed. The chosen methodology of deep interviews and thorough studying of literature provides an assessment of the potential transition dynamics, forming a foundation for future investment decisions. The conclusions drawn suggest that the main costs related to adoption lie in research and development and implementation. R&D costs for distributed ledgers in the Swedish financial sector during 2019 were approximated to USD 40 million. The main benefits of automation, efficiency and reduced level of complexity were concluded to likely outweigh the costs within approximately ten to twenty years. Experience will allow companies to optimize governance structures and consensus mechanisms, while learning to expose parts of networks into public space. The innovative, adaptive Swedish market environment presumably enables faster than average diffusion of innovation, while remaining barriers in cooperation, trust, interoperability and regulation may extend the adoption process

  • 150.
    Blom, Sofia
    KTH, Skolan för kemi, bioteknologi och hälsa (CBH).
    Comparison of the biodegradability of different intestinal filling agents2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    The objectives of this project were to study the environmental aspect of some intestinal filling agents used for contrast imaging, after released into the environment. The factor that was investigated was the biodegradability of the agents. The agents were Movprep (main ingredient is PEG), Omnipaque (main ingredient is Iohexol based on Iodine) and a Filling Agent A (protein rich, further called FAA) that currently was during development. The outline of the project included some steps. Movprep and Omnipaque were stated to be stable along human consumption, hence was a step of digestion only carried out for FAA. To add the aspect of solar radiation in the environment, phototransformation experiments were performed. To get a better view of the biodegradability of the agents, the concentration of organic carbon was determined. The environmental issue of exceeded addition of nitrogen compounds was evaluated by analysing the concentration of nitrogen in nitrate. To determine the composition and decomposition, MALDI-TOF MS was carried out. Differences were found between the samples and depending on how long time they were exposed for solar radiation. FAA showed to be rather biodegradable. Movprep was stable, but not as stable as expected. Omnipaque was very stable in elemental concentrations and quite stable in composition, at least for a short time.

1234567 101 - 150 of 1817
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf