Sökning: "Kommunikationsteknologi"

Visar resultat 1 - 5 av 30 avhandlingar innehållade ordet Kommunikationsteknologi.

1. 1. Socialt entreprenörskap – informations- och kommunikationsteknologi för lokal handlingsgemenskap

   Författare :Claus Persson; Institutionen för informatik; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; social learning; democracy; discussion; dialogue; virtual community; participative action; community of action; e-participation; e-democracy; ICT; social entrepreneurship; ethics;

   Sammanfattning : The theoretical findings of the thesis is composed of three parts, it consists of (i) a framework for social entrepreneurship, (ii) some pitfalls and success factors and (iii) a perspicuous design guide. These findings was a result of field research during a long time – more than 5 years, 2000-2005 – and the scientific purpose was to give a broad description and understanding of the research problem, which was: How should (i) social, (ii) pedagogical and (iii) technical components be arranged and aligned in a process to develop, uphold or vitalize a social and learning context by help of ICT-supported dialogue and discussion – e-democracy and e-participation – between ordinary participants/members and their representatives? The thesis describes a dialogue and discussion-based social entrepreneurship for the development and use of a similar like socio-technical ICT-artifact. LÄS MER

3. 2. Information and communication technology as a tool for support in home care : Experiences of middle-aged people with serious chronic illness and district nurses

   Författare :Carina Nilsson; Carina Berterö; Luleå tekniska universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Nursing; Omvårdnad;

   Sammanfattning : The overall aim of this doctoral thesis was to elucidate experienced needs of people with serious chronic illness living at home and the use of information and communication technology (ICT) as a tool for support from district nurses (DNs).The doctoral thesis included five Papers; a systematic literature review, which comprised both qualitative and quantitative studies, and four Papers with qualitative approach. LÄS MER

4. 3. Antenna System Design for 5G and Beyond – A Modal Approach

   Författare :Hanieh Aliakbari Abar; Kommunikationsteknologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; millimeter-wave antennas; MIMO system; Modal analysis; Substrate integrated waveguide antennas; terminal antennas;

   Sammanfattning : Antennas are one of the key components that empower a new generation of wireless technologies, such as 5G and new radar systems. It has been shown that antenna design strategies based on modal theories represent a powerful systematic approach to design practical antenna systems with high performance. LÄS MER

5. 4. E-health and information- and communication technology (ICT) as support systems for older family caregivers in rural areas

   Författare :Madeleine Blusi; Mats Jong; Stefan Sävenstedt; Mittuniversitetet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; caregiver support; e-health; family caregivers; ICT; isolation; rural health; web-camera interviews; anhörigstöd; e-hälsa; informations- och kommunikationsteknologi; IKT; isolering; glesbygd; web-kamera intervjuer;

   Sammanfattning : The overall objective of the thesis was to investigate how older family caregivers in rural areas experienced participation in an e-health based caregiver support system. Participants were 95 caregivers allocated to intervention group (n=63) and control group (n=32). LÄS MER

7. 5. Channel Shortening in Wireless Communication

   Författare :Sha Hu; Kommunikationsteknologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Channel shortening CS ; multi-input multi-output MIMO ; intersymbol interference ISI ; achievable information rate AIR ; partial marginalization PM ; dirty paper coding DPC ; large intelligent surface LIS ; Cramér-Rao lower bound CRLB ;

   Sammanfattning : The concept of Channel Shortening (CS) is a well-known technique that has a rich history over 40 years. CS transfers linear vector channels such as multi-input multi-output (MIMO) and intersymbol interference (ISI) channels into ``shortened'' versions, for the purpose of reducing demodulation-complexity and improving data-transmission performance. LÄS MER