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| 2. |
- Jakobsson, Fredrik Lars Emil, 1974-
(author)
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Charge transport modulation in organic electronic diodes
- 2008
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Doctoral thesis (other academic/artistic)abstract
- Since the discovery of conducting polymers three decades ago the field of organic electronics has evolved rapidly. Organic light emitting diodes have already reached the consumer market, while organic solar cells and transistors are rapidly maturing. One of the great benefits with this class of materials is that they can be processed from solution. This enables several very cheap production methods, such as printing and spin coating, and opens up the possibility to use unconventional substrates, such as flexible plastic foils and paper. Another great benefit is the possibility of tailoring the molecules through carefully controlled synthesis, resulting in a multitude of different functionalities.This thesis reports how charge transport can be altered in solid-state organic electronic devices, with specific focus on memory applications. The first six chapters give a brief review of the field of solid-state organic electronics, with focus on electronic properties, resistance switch mechanisms and systems. Paper 1 and 3 treat Rose Bengal switch devices in detail – how to improve these devices for use in cross-point arrays as well as the origin of the switch effect. Paper 2 investigates how the work function of a conducting polymer can be modified to allow for better electron injection into an organic light emitting diode. The aim of the work in papers 4 and 5 is to understand the behavior of switchable charge trap devices based on blends of photochromic molecules and organic semiconductors. With this in mind, charge transport in the presence of traps is investigated in paper 4 and photochromic molecules is investigated using quantum chemical methods in paper 5.
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| 4. |
- Olsson Holmström, Helena, et al.
(author)
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- 2014
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In: Proceedings of the Euromicro Conference. - : IEEE. ; , s. 9-16
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Conference paper (peer-reviewed)abstract
- In most software development companies the road mapping and requirements prioritization process is a complex process in which product management experiences difficulties in getting timely and accurate customer feedback. The feedback loop from customers is slow and often there is a lack of mechanisms that allow for efficient customer data collection and analysis. As a result, there is the risk that requirements prioritization becomes opinion-based rather than data-driven, and that R&D investments are made without an accurate way of continuously validating whether they correspond to customer needs. We call this phenomenon the 'open loop' problem, referring to the challenges for product management to get accurate and timely feedback from customers. To address this problem, we develop the HYPEX model (Hypothesis Experiment Data-Driven Development) that supports companies in running feature experiments to shorten customer feedback loops. We evaluate the model in three software development companies and observe how feature experiments increase the opportunity for data-driven software development.
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| 5. |
- Klinth, Roger, 1964-
(author)
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Mannens frigörelse - ett jämställdhetspolitiskt manifest
- 2012
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In: Könspolitiska nyckeltexter. - : Makadam Förlag. - 9789170611063
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Book chapter (other academic/artistic)abstract
- Klara Arnberg, Fia Sundevall, David Tjeder: Äktenskapsdebatt och rösträttskamp: könspolitiska nyckeltexter 1830-1930
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| 6. |
- Abelev, B., et al.
(author)
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Measurement of electrons from semileptonic heavy-flavor hadron decays in pp collisions at root s=2.76 TeV
- 2015
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In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 91:1
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Journal article (peer-reviewed)abstract
- The p(T)-differential production cross section of electrons from semileptonic decays of heavy-flavor hadrons has been measured at midrapidity in proton-proton collisions at root s = 2.76 TeV in the transverse momentum range 0.5 < p(T) < 12 GeV/c with the ALICE detector at the LHC. The analysis was performed using minimum bias events and events triggered by the electromagnetic calorimeter. Predictions from perturbative QCD calculations agree with the data within the theoretical and experimental uncertainties.
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| 7. |
- Abelev, B., et al.
(author)
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Technical Design Report for the Upgrade of the ALICE Inner Tracking System
- 2014
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In: Journal of Physics G: Nuclear and Particle Physics. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 41:8
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Journal article (peer-reviewed)abstract
- LICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. A key element of the ALICE upgrade is the construction of a new, ultra-light, high-resolution Inner Tracking System (ITS) based on monolithic CMOS pixel detectors. The primary focus of the ITS upgrade is on improving the performance for detection of heavy-flavour hadrons, and of thermal photons and low-mass di-electrons emitted by the QGP. With respect to the current detector, the new Inner Tracking System will significantly enhance the determination of the distance of closest approach to the primary vertex, the tracking efficiency at low transverse momenta, and the read-out rate capabilities. This will be obtained by seven concentric detector layers based on a 50 μm thick CMOS pixel sensor with a pixel pitch of about 30×30 μm2. This document, submitted to the LHCC (LHC experiments Committee) in September 2013, presents the design goals, a summary of the R&D activities, with focus on the technical implementation of the main detector components, and the projected detector and physics performance.
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| 9. |
- Kann, Amanda
(author)
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Voice Assistants Have a Plurilingualism Problem
- 2022
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In: CUI '22. - New York : Association for Computing Machinery. - 9781450397391
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Conference paper (peer-reviewed)abstract
- Intelligent personal assistants (IPAs) using speech interfaces have historically been limited to monolingual use in pre-selected languages. Although recent developments in some IPAs have allowed for increased multilingual flexibility, the plurilingual competence-ability to utilise more than one language in the frame of a single interaction-of state-of-The-Art IPAs still falls short. This is demonstrated in a pilot study, where two widely used IPAs are shown to consistently fail in plurilingual interactions across 3 core tasks. This lack of plurilingual competence makes certain IPA functions virtually unusable in various contexts for users who are not native speakers of the official language(s) where they are located, and also speaks to wider problems in the treatment of multilingual use of IPAs by developers. Addressing these issues will not only make IPAs with speech interfaces considerably more functional for a large demographic of current and potential IPA users, but also enable new applications for IPAs in contexts such as self-regulated language learning.
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| 10. |
- Katsela, Konstantina, 1989, et al.
(author)
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Evaluation of a city logistics business model: Impact of cost, revenue and goods flow on profitability
- 2017
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In: NOFOMA 2017 - PROCEEDINGS OF THE 29TH ANNUAL NORDIC LOGISTICS RESEARCH.
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Conference paper (peer-reviewed)abstract
- Purpose Many city logistics initiatives have failed to become economically sustainable. The purpose of this paper is to explain the impacts of cost, revenue and goods flow variables on the economic performance of a business model for city logistics. Design/methodology/approach A cost/benefit analysis, with data from transport providers and the municipality, on a six-month pilot implementation of a city logistics concept is conducted. The concept combines consolidation with logistics services for private and municipal goods. Findings The results highlight relations between goods volumes, revenues, direct and indirect costs and profitability for private and municipal goods. Sensitivity analyses highlight the impact of changes in goods volumes, costing and pricing on the economic effects of the city logistics concept. The study shows that the relationship between goods volumes and profitability is not linear, but it follows a curve with logarithmic shape. It also shows that the terminal costs are much greater than the distribution costs and that the amount of goods is decisive for the total cost per parcel. Research limitations/implications The evaluation develops the knowledge for the value creation and value capture in business models for city logistics by describing the relative importance of various cost, revenue and goods volume variables. Practical implications Other city logistics initiatives get insights into general cost structures and the effect of goods volumes on economy of scale. Another implication is a need to focus more on terminal efficiency than distribution efficiency for total cost efficiency. Original/value The economic evaluation of the activities in city logistics initiatives is rare. The empirical insights about economic and goods volume variables are valuable for developing the knowledge of business models in city logistics.
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