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  • 1. Aabrekk, S.
    et al.
    Tommerup, H.
    Svendsen, S.
    Mahapatra, Krushna
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Gustavsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Paiho, S.
    Ala-Juusela, M.
    Deliverable 2.2 Possible market strategies for one stop shops of renovation of single family house.: Report prepared for Nordic Innovation Centre2012Report (Other academic)
    Abstract [en]

    The document describes examples of missions, visions and strategies based on the potentialpiloting models defined in report 3.2. It is based on status of interest amongst thestakeholders, and the information, figures and challenges which were discussed in the reportD 2.1 Stakeholder interests. The different service models will request different missionsdepending on the stakeholder in charge of the model. Also visions and strategies could bedifferent depending on the composition of services (core business) offered within each pilot aswell as the additional services offered by sub suppliers and the network connected to the pilot.In the report D2.1 Stakeholders interests, the following 5 different piloting models aresuggested:Type 1 Joint venture of industry, retailers and contractorsType 2 Joint venture of construction/renovation, industry and architect/engineering companiesType 3 Complementary businesses expand their business into renovationType 4 Joint venture of type house producer, bank and home owner associationType 5 Energy/building consultant, real estate agent and financing institutions, e.g. bankIn this report we have described mission, vision and market strategies for 4 existing orproposed models; The Project Manager by Bolig Enøk, from Norway (type 1), ENRA concept(type 2) and K-Rauta & Rautia (type 3) from Finland, and ProjectLavenergi (type 2) fromDenmark. Cleantech by Dong Energy (type 3) from Denmark is also addressed, but notdescribed in detail. As there is no concrete examples representing two of the models fromD2.1 (types 4 and 5), we have made a theoretical exercise in developing mission, vision andmarket strategies for type 5 model, while type 4 is not handled.It may be concluded that there are commercial actors in different parts of the value chainwhich see an opportunity in developing different approaches of “one stop shops” for energyefficient holistic renovations. The concepts are still in a development phase and differ inrespect to how they are organised (as supply side). We may say that the pilots in the differentcountries also find inspiration from each other through this research project. Due to thecomplexity of a holistic renovation project, it is a prerequisite with good partnerships even inthe development phase. In all identified models there is however one main actor taking thelead and ownership to the business model.Independent of the business model the responsible company needs to make some strategicchoices. The starting point is the SWOT analysis which sums up all major challenges for therespective business model. How the strategies should be developed is described in this report.Although the main target group for this report is companies seeing an interest in developingbusiness models for renovation, we found some important issues identified in the SWOTanalysis which the authorities may influence including lack of interest in the market (need ofmore public attention through holistic campaigns), fragmented solutions (stop subsidisingsingle measures without a holistic plan), serious vs unserious companies (need of certificationsystems to build credibility), cost focus leads to limited renovation (need of subventionschemes for holistic retrofitting including tax deduction measures) and finally lack incompetence within companies (need of support to training and collaboration acrosscompanies).

  • 2.
    Aalberg, Toril
    et al.
    Norges teknisk-naturvitenskapelige universitet.
    de Vreese, Claes H.
    University of Amsterdam.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Strategy and Game Framing in European News2013Conference paper (Refereed)
  • 3.
    Aalberg, Toril
    et al.
    Norges Naturvetenskapliga-Tekniska Universitet.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Media Driven Men and Critical Women: Perceptions of Media Relations Among Members of Parliament in Norway and Sweden2009In: International Society of Political Psychology’s 32 Annual Conference, 2009Conference paper (Refereed)
  • 4.
    Aalberg, Toril
    et al.
    Norges teknisk-naturvitenskapelige universitet, Trondheim, Norge.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Media-driven Men and Media-critical Women?: An Empirical Study of Gender and MPs’ Relationships with the Media in Norway and Sweden2011In: International Political Science Review, ISSN 0192-5121, E-ISSN 1460-373X, Vol. 32, no 2, p. 167-187Article in journal (Refereed)
    Abstract [en]

    This study is an investigation of how members of the Norwegian and the Swedish parliaments relate to and perceive their relationships with the media. Based on surveys conducted among members of the Norwegian Storting and the Swedish Riksdag, we find that male MPs have more frequent and somewhat less formal relationships with media and journalists compared with female MPs. The results also suggest that male MPs have adapted to the media and their logic more than female MPs. Female MPs also appear to be more critical towards the requirements imposed on politicians who want to get media exposure, compared with male MPs. Analysis reveals that gender differences are smaller among Swedish than Norwegian MPs.

  • 5.
    Aalberg, Toril
    et al.
    Norges teknisk-naturvitenskapelige universitet.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    de Vreese, Claes H.
    University of Amsterdam.
    Is Game the Name of the Frame?2011Conference paper (Refereed)
  • 6.
    Aalberg, Toril
    et al.
    Norges teknisk-naturvitenskapelige universitet, Norge.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    de Vreese, Claes H.
    University of Amsterdam, Netherlands.
    The framing of politics as strategy and game: A review of concepts, operationalizations and key findings2012In: Journalism - Theory, Practice & Criticism, ISSN 1464-8849, E-ISSN 1741-3001, Vol. 13, no 2, p. 162-178Article, review/survey (Refereed)
    Abstract [en]

    A key concept in research on the media coverage of politics is the game or strategy frame. Contrasted with coverage of politics as issues, theframing of politics as a strategic game is marked by features such as winning and losing as the central concern and a focus on how candidates or parties are doing in opinion polls. The pervasiveness of such framing is, however, disputed since (1) the way in which the frames are conceptualized and operationalized differs significantly; and (2) while some use terms such as 'game frame' and 'strategy frame' as synonymous, others argue that there is a conceptual difference between them. Against this background, this article reviews research on the media's framing ofpolitics as a strategic game, what concepts have been used, and how they have been operationalized; and suggests a synthesis and ways of improving conceptual clarity and comparability in research on the media's use of strategy and/or game frames. © SAGE Publications 2011.

  • 7.
    Aarts, Kees
    et al.
    University of Twente.
    Fladmoe, Audun
    Norges teknisk-naturvitenskapelige universitet.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Media and Political Trust Across Countries2010Conference paper (Other academic)
  • 8.
    Aarts, Kees
    et al.
    University of Twente, Netherlands.
    Fladmoe, Audun
    Norwegian University of Science and Technology, Norway.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Media, Political Trust, and Political Knowledge: A comparative perspective2012In: How Media Inform Democracy: A Comparative Approach / [ed] Aalberg, Toril & Curran, James, London: Routledge, 2012, 1, p. 98-118Chapter in book (Other academic)
  • 9.
    Abazi, Agon
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lindström, Robin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Effektiviseringsmöjligheter på Tunadals sågverk: med innesäljarprocessen i fokus2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The investigation was initiated because of the high workload of the sellers and, additionally, because the Tunadal sawmill has received low ratings in customer surveys. Thus,  two main approaches are adopted here,  the first being to investigate which of the three methods  of working, namely, market divided flow organization, function organizationand flow organization with collaboration, proves to be the most beneficial. The second is to investigate whether there is an available method to ease the daily work. A literature review has been made in order to determine more efficient ways for the sellers to work in the Tunadal sawmill. During the investigation, an in-depth investigation into the total quality management using a balanced scorecard as a management tool was conducted. To identify the current problems, interviews and workshops were conducted with the department members. A customer survey was sent to the customers in order to obtain some indication in relation to their opinions. The results showed that there are many unnecessary working operations such as control, duplication of work and problem solving. Communication between the various departments and individuals proved to sometimes be poor.  A major reason for the sellers’ problems regarding workload was due to the unavailability of goods on the discharge date. Many benefits are associated with the collaborative flow organization as this increases the holistic view and can assist in relation to communication. The function based method of working would, however, lead to greater isolation of the functions in the business. Very little work regarding identification of problems that occur in the processes exists and focus on working with improvements is limited. It would be advantageous to work with total quality management using the balanced scorecard as a management tool in the flow organization based on cooperation as this also promotes the holistic approach.

    Keywords:Efficiency improvement, total quality management, balanced

  • 10.
    Abbasi, M.
    et al.
    KTH Royal Inst Technol, Stockholm.
    Bäckström, Joakim
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Cornell, A.
    KTH Royal Inst Technol, Stockholm.
    Fabrication of Spin-Coated Ti/TiHx/Ni-Sb-SnO2 Electrode: Stability and Electrocatalytic Activity2018In: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 165, no 9, p. H568-H574Article in journal (Refereed)
    Abstract [en]

    A novel three-layer anode having the composition Ti/TiHx/Ni-Sb-SnO2 (Ti/TiHx/NATO) was successfully prepared by a spin-coating and pyrolysis process aiming at a long service lifetime and good electrocatalytic properties for ozone formation. The TiHx as an interlayer was produced by electrochemical cathodic reduction of a coated layer of the TiOx on the titanium substrate. Spin coating and thermal decomposition were used to deposit the Sn-Sb-Ni precursor on the surface of the prepared Ti/TiHx electrode. Cyclic and linear scanning voltammetry, Raman spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to reveal the electrode performance and morphology. Results show that the onset potential for the oxygen evolution reaction (OER) of Ti/TiHx /NATO is higher than for Ti/NATO. They also indicate that the service lifetime of the Ti/TiHx/NATO is twice as long as the Ti/NATO at a current density of 50 mA.cm(-2) at room temperature. Electrochemical ozone generation and degradation of the methylene blue were investigated to confirm selectivity and activity of the electrodes. After 5 min electrolysis, a current efficiency for ozone generation of 56% was obtained the electrode with TiHx while 38% was obtained on Ti/NATO under same conditions. The results also confirm that the Ti/TiH x /NATO has a higher kinetic rate constant and decolorization efficiency for removal of the methylene blue compare to the Ti/NATO. The rate constant for the pseudo-first ordered reaction of methylene blue degradation showed high values of 350 x 10(-3) min(-1) for Ti/NATO and 440 x 10(-3) min(-1) for Ti/TiHx/NATO. 

  • 11.
    Abbaszad Rafi, Abdolrahim
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. Azarbaijan Shahid Madani University, Tabriz, Iran.
    Hamidi, N.
    Azarbaijan Shahid Madani University, Tabriz, Iran.
    Bashir-Hashemi, A.
    University of Alabama, Tuscaloosa, AL, United States.
    Mahkam, M.
    Azarbaijan Shahid Madani University, Tabriz, Iran.
    Photo-Switchable Nanomechanical Systems Comprising a Nanocontainer (Montmorillonite) and Light-Driven Molecular Jack (Azobenzene-Imidazolium Ionic Liquids) as Drug Delivery Systems; Synthesis, Characterization, and in Vitro Release Studies2018In: ACS Biomaterials Science and Engineering, ISSN 2373-9878, Vol. 4, no 1, p. 184-192Article in journal (Refereed)
    Abstract [en]

    In this work, photoresponsive nanomechanical systems were prepared through the intercalation of positively charged photoswitching molecular jacks (azobenzene ionic liquids, Azo-ILs) within montmorillonite (MMT) layers (MMT@Azo-ILs). The study shows that MMT@Azo-ILs are photosensitive and the synthesized molecular jacks could change the basal distances of MMT layers upon UV irradiation. These changes come from changes in the structure and geometry of Azo molecules (i.e., cis-trans isomerization) between clay layers upon UV irradiation. The prepared photoresponsive nanomechanical systems were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM). Moreover, the in vitro release studies were performed in different conditions (upon UV irradiation and darkness) in pH 5.8 at 34 ± 1 °C, and it was found that the release rates from drug loaded MMT@Azo-ILs were higher upon UV irradiation in comparison with the release rates in darkness. According to the release studies, the prepared photoresponsive carriers might be considered as an excellent potential candidate in order to formulate smart sunscreens. © 2017 American Chemical Society.

  • 12.
    Abdalla, Munir A
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Fröjdh, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Petersson, Sture
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    A CMOS APS for dental X-ray imaging using scintillating sensors2001In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 460, no 1, p. 197-203Article in journal (Refereed)
    Abstract [en]

    In this paper we present an integrating CMOS Active Pixel Sensor (APS) circuit to be used with scintillator type X-ray sensors for intra oral dental X-ray imaging systems. Different pixel architectures were constructed to explore their performance characteristics and to study the feasibility of the development of such systems using the CMOS technology. A prototype 64×80 pixel array has been implemented in a CMOS 0.8 μm double poly n-well process with a pixel pitch of 50 μm. A spectral sensitivity measurement for the different pixels topologies, as well as measured X-ray direct absorption in the different APSs are presented. A measurement of the output signal showed a good linearity over a wide dynamic range. This chip showed that the very low sensitivity of the CMOS APSs to direct X-ray exposure adds a great advantage to the various CMOS advantages over CCD-based imaging systems.

  • 13.
    Abdalla, Munir A
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Fröjdh, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Petersson, Sture
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    A new biasing method for CMOS preamplifier-shapers2000In: ICECS 2000: 7TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS & SYSTEMS, VOLS I AND II, 2000, p. 15-18Conference paper (Refereed)
  • 14.
    Abdalla, Munir A
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Fröjdh, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Petersson, Sture
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    An integrating CMOS APS for X-ray imaging with an in-pixel preamplifier2001In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 466, no 1, p. 232-236Article in journal (Refereed)
    Abstract [en]

    We present in this paper an integrating CMOS Active Pixel Sensor (APS) circuit coated with scintillator type sensors for intra-oral dental X-ray imaging systems. The photosensing element in the pixel is formed by the p-diffusion on the n-well diode. The advantage of this photosensor is its very low direct absorption of X-rays compared to the other available photosensing elements in the CMOS pixel. The pixel features an integrating capacitor in the feedback loop of a preamplifier of a finite gain in order to increase the optical sensitivity. To verify the effectiveness of this in-pixel preamplification, a prototype 32 x 80 element CMOS active pixel array was implemented in a 0.8 mum CMOS double poly, n-well process with a pixel pitch of 50 mum. Measured results confirmed the improved optical sensitivity performance of the APS. Various measurements on device performance are presented.

  • 15.
    Abdalla, Munir
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Dubaric, Ervin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Nilsson, Hans-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Fröjdh, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Petersson, Sture
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    A scintillator-coated phototransistor pixel sensor with dark current cancellation2001In: cecs2001: 8th IEEE international conference on electronics, circuits and systems, Vols. I-III, Conference Proceedings, 2001, p. 663-667Conference paper (Other academic)
  • 16.
    Abdalla, Suliman A
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Architecture and circuit design of photon counting readout for X-ray imaging sensors2007Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Hybrid pixel array detectors for X-ray imaging are based on different technologies for sensor and readout electronics. The readout electronics are based on standard CMOS technologies that are experiencing continuously rapid improvements by means of down-scaling the feature sizes, which in turn lead to higher transistor densities, lower power consumption, and faster circuits. For pixel-array imaging sensors the improvements in CMOS technology opens up new possibilities of integrating more functionality in the pixels for local processing of the sensor data. However, new issues related to the tight integration of both analog and digital processing circuits within the small area of a pixel must also be evaluated.

    The advantages of down-scaling the CMOS technology can be utilized to increase the spatial resolution by reducing the pixel sizes. Recent research indicates however that the bottleneck in reaching further spatial resolution in X-ray imaging sensors may not be limited by the circuit area occupied by the functions necessary in the pixels, but are instead related to problems associated with charge-sharing of charges generated by the sensor which are distributed over a neighbourhood of pixels and will limit the spatial resolution and lead to a distortion of the energy spectrum. In this thesis a mechanism to be implemented in the readout circuits is proposed in order to suppress the charge-sharing effects. The proposed architecture and its circuit implementation are evaluated with respect to circuit complexity (area) and power consumption. For a photon-counting pixel it is demonstrated that the complete pixel, with charge-sharing suppression mechanism, can be implemented using 300 transistors with an idle power consumption of 2.7μW in a 120nm CMOS technology operating with a 1.2V power supply.

    The improvements in CMOS technology can also be used for increasing the range of applications for X-ray imaging sensors. In this thesis, an architecture is proposed for multiple energy discrimination, called color X-ray imaging. The proposed solution is the result of balancing the circuit complexity and the image quality. The method is based on color sub-sampling with intensity biasing. For three-level energy discrimination, that corresponds to color imaging systems for visible light with R, G, and B color components, the increase in circuit complexity will be only 20% higher than that for the Bayer method but results in significantly better image quality.

    As the circuit complexity in the digital processing within each pixel is increased, the digitally induced noise may play an increasingly important role for the signal-to-noise ratio in the measurements. In this thesis an initial study is conducted regarding how the digital switching noise affects the analog amplifiers in the photon-counting pixel.

  • 17.
    Abdalla, Suliman
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Nilsson, Hans-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Oelmann, Bengt
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Circuit Implementation of Mechanism for Charge-Sharing Suppression for Photon-Counting Pixel Arrays2005In: 23rd NORCHIP Conference 2005, IEEE conference proceedings, 2005, p. 137-140, article id 1597008Conference paper (Refereed)
    Abstract [en]

    This work proposes an efficient circuit implementation of a mechanism for charge-sharing suppression in photon-counting pixel arrays based on current-mode circuits for the analog parts. The additional circuits needed for charge-sharing suppression in a four-pixel cluster, leads to an increase in power consumption of 36% and only a marginal increase in circuit area. The implemented pixel with window-discrimination, managing charge-sharing in a four-pixel cluster and with an event-counter of 13 bits, consists of 300 transistors and has a power consumption of 2.7 μW when idle. It is implemented in a 120nm CMOS process and the presented results are based on simulations.

  • 18.
    Abdalla, Suliman
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Oelmann, Bengt
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Thim [Lundgren], Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Architecture and Circuit Design for Color X-Ray Pixal Array Detector Read-Out Electronics2007In: 24th Norchip Conference, 2006, New York: IEEE conference proceedings, 2007, p. 271-276, article id 4126997Conference paper (Refereed)
    Abstract [en]

    This paper proposes an area- and power-efficient implementation of the read-out electronics for color X-ray pixel detectors for imaging. Introducing multiple levels of energy discrimination will increase the complexity of the read-out electronics in each pixel. The proposed architecture has full resolution for the intensity and reduced resolution for the energy spectrum (color), which leads to a good compromise of image quality and circuit complexity. We show that the increase in complexity, compared to single energy-range pixel, will lead to increase in circuit area of less than 20%.

  • 19.
    Abdipour, Morteza
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Industrial Design.
    Lorentzen, Lena
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Industrial Design.
    Olin, Håkan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    A Design Research Lab—An Integrated Model to Identify Conscious and Unconscious Behavior in the Design Process2016In: Advances in Intelligent Systems and Computing: Design for Inclusion, Springer International Publishing Switzerland , 2016, Vol. 500, p. 553-563Conference paper (Refereed)
    Abstract [en]

    To understand how different design solutions affect users, designers traditionally use different evaluation methods that mainly rely on conscious feedback from the users. However, the complexity of human behaviour, where a large part is unconscious, point to a need for an extended tool box addressing the part not accessible to human conscious knowledge. Here, we describe a design research lab where traditional methods are complemented with tools to measure physiological signals influenced by emotional and sympathetic responses. These tools include galvanic skin response (GSR), electrocardiograph (ECG), and electroencephalograph (EEG). Typical sessions with acquired data of conscious and unconscious user reactions are described. The large body of data collected, which also require non-design expertise for interpretation, suggest that a further development towards simplified output data of the unconscious reactions is needed to allow wider use within industrial design work.

  • 20.
    Abdul Waheed, Malik
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Thörnberg, Benny
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Cheng, Xin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Kjeldsberg, Per Gunnar
    NTNU.
    Generalized Architecture for a Real-time Computation of an Image Component Features on a FPGAManuscript (preprint) (Other academic)
    Abstract [en]

    This paper describes a generalized architecture for real-time component labeling and computation of image component features. Computing real-time image component features is one of the most important paradigms for modern machine vision systems. Embedded machine vision systems demand robust performance, power efficiency as well as minimum area utilization. The presented architecture can easily be extended with additional modules for parallel computation of arbitrary image component features. Hardware modules for component labeling and feature calculation run in parallel. This modularization makes the architecture suitable for design automation. Our architecture is capable of processing 390 video frames per second of size 640x480 pixels. Dynamic power consumption is 24.20mW at 86 frames per second on a Xilinx Spartran6 FPGA.

  • 21.
    Abdulridha, Aya
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Albu-Jaafer, Ali
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Problem identification for the delivery system for document and errand management in an IT company: A qualitative case study an IT firm2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In today's society, many IT organizations have strived to implement system development to improve and streamline information management in an effort to streamline the entire organization. The first step in system development is to identify the problems experienced by the company. This study focuses on studying delivery systems at IT companies in order to identify problems and quality shortcomings in that system. The delivery system is used daily by employees at the fall company. It was noted that several problems have arisen when the system is not automated. Employees have different problems that they want to avoid. For example, employees must enter manually to change what has been generated by the system. This leads to waste times and increases the risk of failure. Research in the areas of system development and process development stresses the importance of developing or improving IT processes to achieve the required quality. The study has been conducted by observing and interviewing employees who work with the delivery system. The results of this study present three major problems that the system has today. These are installation guide, system usability and requirement specification. The Installation Wizard is a document that consists of all modules to be installed at the customer for the version to be released along with other necessary information about the deliveries or modules. This document is not generated by the system today but is manually created by the employees. This requires a lot of manual work and time to check and make sure they have got them all. Regarding the second issue, the current system lacks some features that make usability very complex and that takes time to learn how it works. Finally, the company has no clear requirement management process, which means that the company delivers a module or service that does not meet its requirements and expectations. The study also represents solutions to address these issues.  

  • 22.
    Abdulridha, Aya
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Karlberg, Louice
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Klassificering och lokalisering: En studie om klassificering och lokalisering av produkter hos Delta Terminal AB2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today Delta Terminal AB rents a warehouse, the expenses of the warehouse are much higher than the income and therefore Delta Terminal Ab wants to relocate the warehouse to a different building that they own. The current warehouse is approximately 7900 𝑚2and the intended local is 6400𝑚2. Because of the differ-ence in size between the two warehouses, it is important that the products are placed so that the bearing surface is filled as much as possible without damag-ing the products. To reduce the driving distance in the warehouse the products are placed after a categorization technique called double ABC-analysis, where the delivery frequency is the main factor. To verify that the products fit in the warehouse calculations were made on the fill rate, a localization and product placement were also made based on the categorization. The information is taken from a literature review, scientific articles, previous studies, discussions with the staff at Delta Terminal AB and from each client who has a product in the warehouse. The study shows that the products Delta Terminal AB has in stock will not fit in the intended warehouse and that Delta Terminal AB needs at least 48 m2 to store leftover products.

  • 23.
    Abedi, Shiva Masoumeh
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering.
    Considering a sustainable approach tonitrogen removal of waste waterin south-west Iran2010Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Pollution of the drinking water environment has long been thought to be a primary cause of diseases. According to environmental research, there is a global water quality crisis. From an environmental stand point, eutrophication or accumulation of nitrates in wastewater are expected to cause high ammonium, low pH and increased nitrate concentrations [Koren et al. 2000] which are a critical form of nitrogen that needs our attention. This study considers the case of eutrophication in south-west Iran. This region is located in the Khuzestan province and consists of two basins (Karun and Dez) which can be seen as susceptible to the effect of eutrophication. This paper analyses the environmental pollution impact, economic, and social approaches of two waste water treatment plants. The case study focuses on a waste water treatment plant operated by activated sludge in Iran and the reference study is technology combined Sharon-Anammox treatment in Netherlands. The environmental impact assessment of these Waste Water Treatment Plants (WWTPs) has been analyzed by a Triple Bottom Line method. The hypothesis is to prove a general and specific outlook of the lowest environmental emissions, the lowest costs and creation of better welfare. The other method applied in this study is the barriers of transferring technology. The results show that the combined Sharon-Anammox method is able to significantly reduce the environmental impact based on the methods applied in this study.In this study, the generally considered barriers are problems of methods of transferring combined Sharon-Anammox technology to Iran and the possible obstacles that may be encountered in the transfer of technology to Iran. The result of this study is estimated with respect to an evaluation of political, environmental, economic, social, and technological capacity. The result is that most potential problems are political and economic in nature, which may be because these two issues are so closely related to each other. In this case, lack of management is a problem in the institution of policy, and could affect the economic situation. In fact each of the barriers could be overlapped and affect each other. Regarding all barriers and problems that are in the process of transferring technology, Iran as a developing country would be able to receive technologies.

  • 24. Aboelfotoh, M O
    et al.
    Fröjdh, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Petersson, Sture
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Schottky-barrier behavior of metals on n- and p-type 6H-SiC2003In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 67, no 7, p. 075312-Article in journal (Refereed)
  • 25.
    Abrahamsson, Camilla
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Lilja, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Hedlund, Christer
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Towards New Levels of Creating/Improving and Understanding Value in Swedish Municipalities: A Review of Research on Understanding and Creating Value in Municipal Quality Development by Qualitative Approaches (and Co-Creation)2017Conference paper (Refereed)
    Abstract [en]

    Purpose

    Quality management and Lean initiatives are currently widespread in the Swedish municipal sector. It is also made clear that all Lean initiatives should be initiated to benefit the customer and not for internal organizational reasons. However, the practices currently used for understanding value creation in the municipalities tend to focus heavily on the use of numerical, quantitative approaches. In sharp contrast, the growing field of, for example, design thinking argue that qualitative approaches are key when it comes to getting closer to the citizens, establishing new levels of understanding and thereby inspiring new and better solutions. In sum, it seems likely that municipalities are struggling with developing quality due to relying, in too one-sided on the use of quantitative rather than qualitative approaches to understand and spark new levels of value creation. The purpose of this paper is to contribute with a review of research concerning qualitative approaches for understanding and co-creating value in municipal quality development.

     

    Methodology/Approach The paper is based on a literature review.

     

    Findings The paper provides an overview of previous research concerning practices for evaluating and understanding value creation in the context of a municipal quality development.

     

    Value of the paper

    This overview is of value for practitioners within the context, as well as researchers that wants to contribute within this area.

  • 26. Abramsson, Erika
    et al.
    Strömbäck, Jesper
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    EU-parlamentsvalet: En god eller dålig nyhet?2004Report (Other academic)
  • 27. Acx, A. G.
    et al.
    Berg, M
    Karlsson, M
    Lindström, M
    Pettersson, Stefan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Slanina, P
    Zander, J
    Radio Resource Management2000In: Third generation mobile communication systems, Boston, Mass: Artech House, 2000, p. 386-Chapter in book (Other academic)
  • 28.
    Adam, Silke
    et al.
    University of Bern, Switzerland.
    Maier, Michaela
    University of Koblenz-Landau, Germany.
    De Vreese, Claes. H
    University of Amsterdam, Nederländerna.
    Schuck, Andreas R.T
    University of Amsterdam, Nederländerna.
    Stetka, Vaclav
    University of Oxford, Storbritannien.
    Jalali, Carlos
    University of Aveiro, Portugal.
    Seeber, Gilg U.H
    University of Innsbruck, Österrike.
    Negrine, Ralph
    University of Sheffield, Storbritannien.
    Raycheva, Lilia
    St. Kliment Ohridski University of Sofia, Bulgarien.
    Berganza, Rosa
    University Rey Juan Carlos, Spanien.
    Róka, Jolán
    Budapest College of Communication and Business, Ungern.
    Dobek-Ostrowska, Boguslawa
    University of Wroclaw, Polen.
    Nord, Lars
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Balzer, Matthias
    University of Koblenz-Landau, Tyskland.
    Baumli, Manuela
    University of Bern, Switzerland.
    Campaigning Against Europe?: The Role of Euroskeptic Fringe and Mainstream Parties in the 2009 European Parliament Election2013In: Journal of Political Marketing, ISSN 1537-7857, E-ISSN 1537-7865, Vol. 12, no 1, p. 77-99Article in journal (Refereed)
    Abstract [en]

    In this article, we analyze political parties' campaign communication during the 2009 European Parliamentary election in 11 countries (Austria, Bulgaria, Czech Republic, Germany, Hungary, The Netherlands, Poland, Portugal, Spain, Sweden, and the UK). We study which types of issues Euroskeptic fringe and Euroskeptic mainstream parties put on their campaign agendas and the kind and extent of EU opposition they voice. Further, we seek to understand whether Euroskeptic and non-Euroskeptic parties co-orient themselves toward each other within their national party systems with regard to their campaigns. To understand the role of Euroskeptic parties in the 2009 European Parliamentary elections, we draw on a systematic content analysis of parties' posters and televised campaign spots. Our results show that it is Euroskeptic parties at the edges of the political spectrum who discuss polity questions of EU integration and who most openly criticize the union. Principled opposition against the project of EU integration, however, can only be observed in the UK. Finally, we find indicators for co-orientation effects regarding the tone of EU mobilization: In national political environments where Euroskeptic parties strongly criticize the EU, pro-European parties at the same time publicly advance pro-EU positions.

  • 29.
    Adawe, Idil
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Haglund, Johanna
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    #Metoo - en kvantiativ innehållsanalys av de svenska mediers gestaltning av kampanjen som spred sig över hela världen inom ett dygn.2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Problemformulering: #Metoo-kampanjen blev kanske bland det mest omtalade fenomenet under året 2017. För många människor utgör medier den viktigaste kontakten med vad som händer i världen. Men vilken bild av kampanjen är det svenskarna har fått förmedlad till sig utifrån de svenska tidningarna? Hur väljer de största rikstäckande tidningarna att gestalta kampanjen?
Syfte: Syftet med studien är att granska gestaltningen inom #metoo-kampanjens nyhetsrapportering under perioden 15 oktober 2017 till 15 november 2017.
Metod och material: E n kvantitativ innehållsanalys har genomförts bestående av totalt 133 analysenheter från Sveriges största morgon- (Svenska Dagbladet och Dagens Nyheter) och kvällstidningar (Expressen och Aftonbladet).
Huvudresultat: Genom arbetet med denna studie har vi nått resultatet gällande gestaltningar som framkommer i morgontidningarnas och kvällstidningarna nyhetsrapportering angående #metoo-kampanjen. Gestaltningarna som framträder i studien och analysen är: sakgestaltning, konfliktgestaltning, gestaltning som mänskligtintresse, moralgestaltning samt ansvarsgestaltning. Hur morgontidningarna och kvällstidningarna skiljde sig åt i gestaltandet av #metoo-kampanjen var till störst del i förekomsten av källor. Sakgestaltning och mänskligt intressegestaltning förekom mest procentuellt bland undersökningsenheterna.

  • 30.
    Adborn, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Visualisering av datastrukturer: Utveckling av ett tolkningsverktyg2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Interpretation and assimilation of data structures, organized information andsource code files are frequently occuring during software development. This kindof information is stored in text-based form and its understanding requires greatthoroughness and investment in time from the developer's part. This thesisdescribes the development of a utility program prototype, which automates theparsing of XML data and source code files from the programming languages Cand C++, in purpose of trying to simplify the interpretation process. The programcreates and presents a visual graph of the structure found, using an algorithmwhich can present arbitrary large XML files as well as a limited number ofconcurrent source code files. The effects on the interpretation time and itsreliablity has been evaluated in a survey among software development students.The result showed a certain increase in the number of correct conclusions fromthe participants' side after studying the visual representation compared to itsorignial text-based form. The amount of time used was not measured other thansubjectively by the users themselves, of which a predominant proportionconsidered a reduction in needed time when using the graphical representation.The thesis shows that the use of this or an equivalent utility can enhance theassimilation of data structures by increasing the rate of reliabilty whilesimultaneously decreasing the needed amount of time. Still, the quantifyable gainsof these results remains statistically largely uncertain.

  • 31.
    Adelholt, Martin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Hydra Coupler: Snabbkoppling till protessystem2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Många amputerade upplever att deras protessystem inte är lika anpassningsbara som de hoppats på. Dagens protes­system är utformade med låsta komponenter vilket begrän­sar användarens möjlighet att anpassa systemen till specifika ändamål. Därför påbörjades ett projekt med målet att under­söka om det finns möjlighet att skapa en snabbkoppling till protessystem genom att framställa ett konstruktionsförslag av ett lösningsalternativ. I starten av projektet påbörjades en problemformulering för att undersöka om problemen uppvisade några beroenden eller påverkade andra poster inom det framställda flödesschemat. Efter genomförd problemformulering påbörjades förstudierna för att samla in relevant information till genomförandet av projektet, där förstudien genomfördes med hjälp av en konkurrensanalys, funktionsanalys och enkätundersökning. Efter att förstudien var avklarad påbörjades en designprocess för att framställa ett konstruktionsförslag av ett lösningsförslag. Under designprocessens start formulerades en kravspecifikation så att konstruktionsförslaget hade något att förhålla sig till, och sedan påbörjades modelleringen av ett konstruktionsförslag med hjälp av Solidworks. En prototyp framställdes i plast med hjälp av en 3D- printer för att kontrollera passform av ingående komponenter och slutligen så undersöktes konstruktionsförslagets hållfasthet i Solidworks med hjälp av hållfasthetssimuleringar. Genomförandet av projektet har resulterat i en framställning av konstruktionsmaterial, prototyp, konstruktionsritningar till ett konstruktionsförslag av en snabbkoppling till protessystem. Konstruktionsförslaget kallat Hydra Coupler förser protesanvändare med möjligheten att enkelt byta proteskomponenter efter ändamål utan behov av externa verktyg, och Hydra Coupler kan även inneslutas av kosmetik utan att förlora funktionalitet.

  • 32.
    Adjoudani, Soheil
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Utvärderingsmodeller vid offentlig upphandling: En granskning av förekommande modeller och möjlighet till ett enhetligt val av en modell2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to address the evaluation phase within the area of public procurement and more specifically, from a supplier perspective. Public procurement is carried out in order to get good quality at a low price. The procurement can be performed by the lowest price or by the most economically advantageous tender. Previously concluded contracts were requested and the evaluation model that they used was identified and also it’s corresponding mathematical model. The score-weighted models were not consistent because they depended on irrelevant variables, as did the relative quality-weighted model in theory. This means that non-competitive tender affects the outcome of the other tenders. The study showed that it is more beneficial to choose the relative quality-weighted model over the score-weighting model, as it does not suffer from the irrelevant variable situation. The relative quality-weighted model is equivalent to the more superior quality-weighted model with discrete premium/discounts. This is the case as the ranking of the tenderers bids were the same in the two models. Furthermore, it was shown through a sensitivity analysis, that the weighting for the quality and the price from the score-weighted model played no role in the relative quality-weighted model; this is also an advantage as the purchaser often arbitrarily sets it.

  • 33.
    Adolfsson, David
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering.
    Diverting human urine from outhouses into agriculture in Nicaragua: for sanitation, fertilizer and recycling purposes2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Human urine is a   valuable resource which has good potential to be used as a fertilizer all   over the world. In the developing countries sanitation and food security are   both issues that need urgent attention.    A urine separation toilet can be constructed with minimal investment   in the Nicaraguan context, and the usage of the urine as a fertilizer can   help establish higher yields and is a good alternative to chemical   fertilizers. This field experiment is trying this in practice in the context   of rural Nicaragua, to determine the effect of urine on two plants on. For   this study, the common bean (Phaseolus vulgaris) and the Chaya (Cnidoscolus   aconitifolius) was selected and the results confirm that urine has potential   as a fertilizer in the Nicaragua context. The common bean yield was twice as   large after urine fertilization and the Chaya reacted positively to urine   fertilization. For urine separation purposes, two different separators were   constructed on the site to showcase the benefits with separating the urine   from the faeces, creating lower latrine volume and better sanitation in the   outhouse. The risks associated with human urine are low if the urine is   separated securely to avoid crosscontamination from faeces. If a   safety-barrier system is adopted, the overall risks with using urine as a   fertilizer are negligible. The spreading potential of urine separation and   fertilization in rural Nicaragua is high, but more experiments and   demonstrations are needed to reach adopters of the technology.  

  • 34.
    Adolfsson, Kim
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Industrial Design.
    Skänk: Att skapa ett intressant utseende2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I denna uppsats skriver jag om hur man skapar en intressant och spännande kontrast mellan olika material och mönster i min examensmöbel. Jag beskriver även kortfattat hur jag kom fram till just detta, samt varför jag valde de metoder jag använde mig av.

     

    Jag valde mellan vanlig brun MDF-skiva, Valchromat (genomfärgad MDF-skiva) och en färg.

     

  • 35.
    Afewerki, Samson
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Development of catalytic enantioselective C-C bond-forming and cascade transformations by merging homogeneous or heterogeneous transition metal catalysis with asymmetric aminocatalysis2014Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Chiral molecules play a central role in our daily life and in nature, for instance the different enantiomers or diastereomers of a chiral molecule may show completely different biological activity. For this reason, it is a vital goal for synthetic chemists to design selective and efficient methodologies that allow the synthesis of the desired enantiomer. In this context, it is highly important that the concept of green chemistry is considered while designing new approaches that eventually will provide more environmental and sustainable chemical synthesis.The aim of this thesis is to develop the concept of combining transition metal catalysis and aminocatalysis in one process (dual catalysis). This strategy would give access to powerful tools to promote reactions that were not successful with either transition metal catalyst or the organocatalyst alone. The protocols presented in this thesis based on organocatalytic transformations via enamine or iminium intermediates or both, in combination with transition metal catalysis, describes new enantioselective organocatalytic procedures that afford valuable compounds with high chemo- and enantioselectivity from inexpensive commercial available starting materials. In paper I, we present a successful example of dual catalysis: the combination of transition metal activation of an electrophile and aminocatalyst activation of a nucleophile via enamine intermediate. In paper II, the opposite scenario is presented, here the transition metal activates the nucleophile and the aminocatalyst activates the electrophile via an iminium intermediate. In paper III,we present a domino Michael/carbocyclisation reaction that is catalysed by a chiral amine (via iminium/enamine activation) in combination with a transition metal catalysts activation of an electrophile. In paper IV, the concept of dual catalysis was further extended and applied for the highly enantioselective synthesis of valuable structural scaffolds, namely poly-substituted spirocyclic oxindoles. Finally, in paper V the concept of dual catalysis was expanded, by investigating more challenging and environmentally benign processes, such as the successful combination of a heterogeneous palladium and amine catalysts for the highly enantioselective synthesis of functionalised cyclopentenes, containing an all carbonquaternary stereocenter, dihydrofurans and dihydropyrrolidines.

  • 36.
    Afewerki, Samson
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Direct regiospecific and highly enantioselective intermolecular a-allylic alkylation of aldehydes by combination of transition metal and chiral amine catalysts2012Conference paper (Refereed)
    Abstract [en]

    The direct intermolecular regiospecific and highly enantioselective a-allylic alkylation of linear aldehydes by combination of achiral bench stable Pd(0) complexes and simple chiral amines as co-catalysts is disclosed. The co-catalytic asymmetric chemoselective and regiospecific a-allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2-alkyl alcohols with high enantiomeric ratios (up to 98:2 er). It is also an expeditious entry to valuable 2-alkyl substituted hemiacetals and 2-alkyl-butane-1,4-diols.

  • 37.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Alimohammadzadeh, Rana
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Henshaw Osong, Sinke
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Tai, Cheuk-Wai
    The Arrhenius Laboratory, Stockholm University.
    Engstrand, Per
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Córdova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Eco-friendly design for scalable direct fabrication of nanocelluloseManuscript (preprint) (Other academic)
  • 38.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Alimohammadzadeh, Rana
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Osong, Sinke H.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Tai, Cheuk-Wai
    The Arrhenius Laboratory, Stockholm University.
    Engstrand, Per
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Sustainable Design for the Direct Fabrication and Highly Versatile Functionalization of Nanocelluloses2017In: Global Challenges, ISSN 2056-6646, Vol. 1, no 7, article id 1700045Article in journal (Refereed)
    Abstract [en]

    This study describes a novel sustainable concept for the scalable direct fabrication and functionalization of nanocellulose from wood pulp with reduced energy consumption. A central concept is the use of metal-free small organic molecules as mediators and catalysts for the production and subsequent versatile surface engineering of the cellulosic nanomaterials via organocatalysis and click chemistry. Here, “organoclick” chemistry enables the selective functionalization of nanocelluloses with different organic molecules as well as the binding of palladium ions or nanoparticles. The nanocellulosic material is also shown to function as a sustainable support for heterogeneous catalysis in modern organic synthesis (e.g., Suzuki cross-coupling transformations in water). The reported strategy not only addresses obstacles and challenges for the future utilization of nanocellulose (e.g., low moisture resistance, the need for green chemistry, and energy-intensive production) but also enables new applications for nanocellulosic materials in different areas.

  • 39.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Breistein, Palle
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Pirttilä, Kristian
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Deiana, Luca
    Univ Stockholm, Arrhenius Lab, Dept Organ Chem, S-10691 Stockholm, Sweden.
    Dziedzic, Pawel
    Univ Stockholm, Arrhenius Lab, Dept Organ Chem, S-10691 Stockholm, Sweden.
    Ibrahem, Ismail
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Córdova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Catalytic Enantioselective beta-Alkylation of alpha,beta-Unsaturated Aldehydes by Combination of Transition-Metal- and Aminocatalysis: Total Synthesis of Bisabolane Sesquiterpenes2011In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 17, no 32, p. 8784-8788Article in journal (Refereed)
    Abstract [en]

    Branching out! The first co-catalytic enantioselective (up to 98:2 e.r.) β-alkylation of α,β-unsaturated aldehydes by combination of simple chiral amine and copper catalysts provides β-branched aldehydes in a one-pot protocol (see scheme). The methodology was applied to the short total syntheses of bisabolane sesquiterpenes (S)-(+)-curcumene, (E)-(S)-(+)-3- dehydrocurcumene and (S)-(+)-tumerone. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  • 40.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Stockholm Univ, Arrhenius Lab, Berzelii Ctr EXSELENT, Stockholm.
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Stockholm Univ, Arrhenius Lab, Berzelii Ctr EXSELENT, Stockholm.
    Combinations of Aminocatalysts and Metal Catalysts: A Powerful Cooperative Approach in Selective Organic Synthesis2016In: Chemical Reviews, ISSN 0009-2665, E-ISSN 1520-6890, Vol. 116, no 22, p. 13512-13570Article, review/survey (Refereed)
    Abstract [en]

    The cooperation and interplay between organic and metal catalyst Arninocatalysis systems is of utmost importance in nature and chemical synthesis. Here innovative and selective cooperative catalyst systems can be designed by combining two catalysts that complement rather than inhibit one another. This refined strategy can permit chemical transformations unmanageable by either of the catalysts alone. This review summarizes innovations and developments in selective organic synthesis that have used cooperative dual catalysis by combining simple aminocatalysts with metal catalysts. Considerable efforts have been devoted to this fruitful field. This emerging area employs the different activation modes of amine and metal catalysts as a platform to address challenging reactions. Here, aminocatalysis (e.g., enamine activation catalysis, iminium activation catalysis, single occupied molecular orbital (SOMO) activation catalysis, and photoredox activation catalysis) is employed to activate unreactive carbonyl substrates. The transition metal catalyst complements by activating a variety of substrates through a range of interactions (e.g., electrophilic pi-allyl complex formation, Lewis acid activation, allenylidene complex formation, photoredox activation, C-H activation, etc.), and thereby novel concepts within catalysis are created. The inclusion of heterogeneous catalysis strategies allows for "green" chemistry development, catalyst recyclability, and the more eco-friendly synthesis of valuable compounds.

  • 41.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Cooperative Lewis Acids and Aminocatalysis2017In: Chiral Lewis Acids in Organic Synthesis / [ed] J. Mlynarski, Wiley-Blackwell , 2017, p. 345-374Chapter in book (Refereed)
    Abstract [en]

    This chapter describes the cooperative strategy of combining metal catalyst activation with aminocatalysis, with a focus on the metal acting as a Lewis acid catalyst. It gives examples where the metal catalyst promotes the reactivity of different substrates by the formation of reactive intermediates. These intermediates can act either as electrophiles or nucleophiles, which in turn can couple with nucleophilic enamine or electrophilic iminium intermediates formed between the carbonyl compounds and aminocatalyst. The chemical transformation ensues via the merging of the enamine and π‐allyl‐Pd complex via asymmetric counteranion‐direct catalysis (ACDC). Subsequently, several groups reported different co‐catalytic systems and chemical strategies for the α‐allylic alkylation of aldehydes and ketones. Cordova and coworkers reported the first example where iminium activation catalysis is combined with metal catalyst activation cooperatively. The stratagem was demonstrated for the catalytic enantioselective conjugate silyl addition to α,β‐unsaturated aldehydes.

  • 42.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Guangning, Ma
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Ibrahem, Ismail
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Highly enantioselective organo/metal cooperative catalysis for construction of spirocyclopentaneoxindoles2014In: Abstract of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 248, article id 173-ORGNArticle in journal (Other academic)
  • 43.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Ibrahem, Ismail
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Rydfjord, Jonas
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Breistein, Palle
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Córdova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design.
    Direct Regiospecific and Highly Enantioselective Intermolecular α-Allylic Alkylation of Aldehydes By Combination of Transition Metal and amine Catalysts2012In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 18, no 10, p. 2972-2977Article in journal (Refereed)
    Abstract [en]

    The first direct intermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd 0 complexes and simple chiral amines as co-catalysts is disclosed. The co-catalytic asymmetric chemoselective and regiospecificα-allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2-alkyl alcohols with high enantiomeric ratios (up to 98:2 e.r.; e.r.=enantiomeric ratio). It is also an expeditious entry to valuable 2-alkyl substituted hemiacetals, 2-alkyl-butane-1,4-diols, and amines. The concise co-catalytic asymmetric total syntheses of biologically active natural products (e.g., Arundic acid) are disclosed. Go organic! Directintermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd 0complexes and simple chiral amines as co-catalysts is disclosed (see scheme). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  • 44.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Stockholm Univ, Berzelii Ctr EXSELENT, SE-10691 Stockholm, Sweden.
    Ma, Guangning
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Ibrahem, Ismail
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Liu, Leifeng
    Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Sun, Junliang
    Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden .
    Highly Enantioselective Control of Dynamic Cascade Transformations by Dual Catalysis: Asymmetric Synthesis of Polysubstituted Spirocyclic Oxindoles2015In: ACS Catalysis, ISSN 2155-5435, E-ISSN 2155-5435, Vol. 5, no 2, p. 1266-1272Article in journal (Refereed)
    Abstract [en]

    The highly enantioselective (up to >99.5:0.5 er) synthesis of polysubstituted spirocyclic oxindoles with four new contiguous stereocenters, including the spiro all-carbon quaternary center, is disclosed. It is accomplished by the highly stereoselective control of a dynamic conjugate/intramolecular allylic alkylation relay sequence based on the synergistic cooperation of metal and chiral amine catalysts in which the careful selection of organic Nand, metal complex, and chiral amine is essential. The intermolecular C-C bond-forming step occurred only when both the metal and chiral amine catalysts were present.

  • 45.
    Afewerki, Samson
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Stockholm University, Stockholm.
    Wang, J. -X
    Jilin University, Changchun, China.
    Liao, W. -W
    Jilin University, Changchun, China.
    Cordova, Armando
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Stockholm University, Stockholm.
    The Chemical Synthesis and Applications of Tropane Alkaloids2018In: Alkaloids: Chemistry and Biology, ISSN 1099-4831Article in journal (Refereed)
    Abstract [en]

    Tropanes are an important class of alkaloid natural products that are found in plants all over the world. These compounds can exhibit significant biological activity and are among the oldest known medicines. In the early 19th century, tropanes were isolated, characterized, and synthesized by notable chemical researchers. Their significant biological activities have inspired tremendous research efforts toward their synthesis and the elucidation of their pharmacological activity both in academia and in industry. In this chapter, which addresses the developments in this field since 1994, the focus is on the synthesis of these compounds, and several examples of sophisticated synthetic protocols involving both asymmetric and catalytic approaches are described. In addition, the structures of more than 100 new alkaloids are included as well as the applications and pharmacological properties of some tropane alkaloids. 

  • 46.
    Afram, Gabriel
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Genomsökning av filsystem för att hitta personuppgifter: Med Linear chain conditional random field och Regular expression2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The new General Data Protection Regulation (GDPR) Act will apply to all companies within the European Union after 25 May. This means stricter legal requirements for companies that in some way store personal data. The goal of this project is therefore to make it easier for companies to meet the new legal requirements. This by creating a tool that searches file systems and visually shows the user in a graphical user interface which files contain personal data. The tool uses Named entity recognition with the Linear chain conditional random field algorithm which is a type of supervised learning method in machine learning. This algorithm is used in the project to find names and addresses in files. The different models are trained with different parameters and the training is done using the stanford NER library in Java. The models are tested by a test file containing 45,000 words where the models themselves can predict all classes to the words in the file. The models are then compared with each other using the measurements of precision, recall and F-score to find the best model. The tool also uses Regular Expression to find emails, IP numbers, and social security numbers. The result of the final machine learning model shows that it does not find all names and addresses, but that can be improved by increasing exercise data. However, this is something that requires a more powerful computer than the one used in this project. An analysis of how the Swedish language is built would also need to be done to apply the most appropriate parameters for the training of the model.

  • 47.
    Afram, Teodora
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System science.
    Westh, Beatrice
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System science.
    IT-verktyg i distribuerade team: Egenskaper i IT-verktyg för att upprätthålla god kommunikation2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study is about IT-tools and communication in distributed system development teams. The purpose of this study is to identify how the members of distributed teams perceive their own communication, and to identify the characteristics that are considered important in the IT-tools to be able to maintain a good communication. To carry out this work, we did a case study where we sent out survey to a company that works distributed and that has team members both in Spain and in Sweden. We also conducted an interview with one of the respondents to be able to get deeper answers to our survey questions. The study showed that most were satisfied with the communication, but they still felt that communication could be improved. The study also showed that most respondents lacked certain qualities in their current IT-tools. The result of this study should be of interest to companies with similar conditions.

  • 48.
    Agius, Eva
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Bevarande av webbplatser: En kartläggning bland statliga myndigheter i Sverige2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis was to investigate if Swedish agencies preserve their websites according to the Swedish archival legislations and guidelines. As a theory the OAIS Reference Model (Open Archival Information System, developed by US Consultative Committee for Space Data Systems, CCSDS) has been used as a model to show how important it is to develop strategies for public digital information which has to be preserved for long term. The ingest function in the OAIS Reference Model demands that files are prepared for long term preservation and requires that the digital information fulfils established technical requirements.

    In the study the Swedish National Archive and their advices about preserving websites to archivists on the Swedish agencies are being studied. To control if the agencies meet the requirements for their management and preservation of their websites a survey was sent out to investigate if Swedish agencies preserve their websites.

     

    According to the survey result, 84 of 113 agencies preserve their websites in some way. If the technical requirements really was met could not be verified in this thesis, the results was relied on the responses from the authorities. The study showed that agencies requested clearer rules in the field of preservation of websites, but also that some agencies wasn’t aware of the regulations and the significance in this issue.

     

    The conclusion of the study is that the agencies might need to update themselves on important legislation and guidance in this area. The study also shows that the National Archive must be clearer with their information on long term storage of government agencies websites.

  • 49.
    Agius, Eva
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Archives and Computer Science.
    Handläggares praktiska makt över bevarande och gallring: En studie hos svenska statliga myndigheter2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There is a suspicion of increased destruction of documents when the Administrative Officer manages the records appraisal in Swedish government authorities, which can lead to a problem regarding the transparency and public access to information. The aim of this thesis was to contribute with knowledge about in which extent an Administrative Officer has the power over practical records appraisal in Swedish government authorities and to find out if the practical power depended on activities within the agencies.

     

    Interviews with Archivists and Administrative Officers at two different Swedish government authorities were conducted in order to see if the activities within the authorities affected how Administrative Officers handled the records appraisal. The study involved a small and a large authority to examine whether different activities could affect the practical power over records appraisal.

     

    The activity theory was used to introduce, present and analyze the survey results. Records Continuum Model is another theory model that was highlighted in the thesis to show the importance of planning the records management even before a record is created.

     

    The result of the case studies showed that there were records not handled according to the rules and policies for one of the studied authorities. It was revealed that Administrative Officers had some practical power over appraisal. The result also showed that the activities within the authorities strongly affected the practical power which Administrative Officers was given. It was shown that, in an authority with a large number of employees and greater flow of information, the Archivist did not reach out with information and routines to the employees. Administrative Officers also had less time to evaluate information when the number of e-mail was a problem.

  • 50.
    Agrawal, P.
    et al.
    Uppsala Universitet.
    Ahlén, Anders
    Uppsala Universitet.
    Olofsson, Tomas
    Uppsala Universitet.
    Gidlund, Mikael
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Long Term Channel Characterization for Energy Efficient Transmission in Industrial Environments2014In: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 62, no 8, p. 3004-3014Article in journal (Refereed)
    Abstract [en]

    One of the challenges for a successful use of wireless sensor networks in process industries is to design networks with energy efficient transmission, to increase the lifetime of the deployed network while maintaining the required latency and bit-error rate. The design of such transmission schemes depend on the radio channel characteristics of the region. This paper presents an investigation of the statistical properties of the radio channel in a typical process industry, particularly when the network is meant to be deployed for a long time duration, e.g., days, weeks, and even months. Using 17–20-h-long extensive measurement campaigns in a rolling mill and a paper mill, we highlight the non-stationarity in the environment and quantify the ability of various distributions, given in the literature, to describe the variations on the links. Finally, we analyze the design of an optimal received signal-to-noise ratio (SNR) for the deployed nodes and show that improper selection of the distribution for modeling of the variations in the channel can lead to an overuse of energy by a factor of four or even higher.

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