Sökning: "Network infrastructure"

Visar resultat 21 - 25 av 356 avhandlingar innehållade orden Network infrastructure.

1. 21. Storied lines : using historical documentation to characterize archaeological connectivity

   Författare :Gísli Pálsson; Philip I. Buckland; Carl Knappett; Sören Sindbæk; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; archaeology; iceland; history; 18th century; network analysis; postgis; cidoc-crm; assemblage theory; archaeoinformatics; network;

   Sammanfattning : As the title suggests, this thesis applies historical documentation as a connective tissue to link together the main conceptual classes in Iceland’s largest SMR, Ísleif. These are the roughly 6000 historic farmsteads used as a classification scheme in Johnsen’s 1847 land census Jarðatal Johnsens. This thesis has three main components. LÄS MER

3. 22. Modelling District Heating Network Costs

   Författare :Luis Sánchez-García; Urban Persson; Helge Averfalk; Erik Möllerström; Marcus Thern; Magnus Åberg; Sweden Lund Lund University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; District Heating; Pipe network; Cost analysis; Distribution Capital Cost; Effective Width; Plot Ratio; Heat Density; GIS; Smart Cities and Communities; Smarta städer och samhällen;

   Sammanfattning : The solution of the undergoing climate and energy crises requires a radical transformation of the energy system, in which sustainability, no carbon emissions and energy efficiency ought to play a paramount role. This revolution should extend to all areas of the energy system, including the space heating and cooling sector, which accounts for a third of the European final energy demand and, in the European continent, it is still mostly supplied by fossil fuels. LÄS MER

4. 23. Kommunikationer, tillgänglighet, omvandling : en studie av samspelet mellan kommunikationsnät och näringsstruktur i Sveriges mellanstora städer 1850-1970

   Författare :Hans Westlund; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; urban history; transport history; infrastructure; structural change; communications network; accessibility; railways; regional development; Kommunikationer; Sverige; ekonomiska förhållanden; historia; 1800-talet; 1900-talet;

   Sammanfattning : This study deals with the relationship between communications networks and economic structure in medium-sized Swedish towns 1850-1970. Medium-sized towns have been defined as those which were ranked 4th-20th in terms of population at two points in time: in the year 1900, when industry had established a foothold and the most important railways had been built, and in the year 1970, at the end of the period studied. LÄS MER

5. 24. Migration Towards Next Generation Optical Access and Transport Networks

   Författare :Kun Wang; Lena Wosinska; Jiajia Chen; Kjell Brunnström; Jason P. Jue; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fiber To The Home FTTH ; Mobile backhaul fronthaul; Next Generation Optical Access network; Optical Transport Network OTN ; Network migration; Techno-Economic; Total Cost of Ownership TCO ; Capital expenditures CAPEX ; Operational expenditures OPEX ; Softer Defined Networking SDN ; Informations- och kommunikationsteknik; Information and Communication Technology; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : By 2020 there will be 50 billion connected devices over the Internet. With the fast-increasing data traffic demand in both fixed and mobile networks, network operators need to migrate networks towards next generation solutions. LÄS MER

7. 25. Mobile Network Operators and Cooperation : A Tele-Economic Study of Infrastructure sharing and Mobile Payment Services

   Författare :Jan Markendahl; Jens Zander; Per Andersson; Heikki Hämmäinen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication theory; Telekommunikationsteori;

   Sammanfattning : Mobile network operators are currently faced with a number of challenges at the market. The revenues from voice services have decreased the last couple of years. Mobile broadband access services are being adopted and the demand is increasing. The increasing traffic volumes require investments in order to increase the network capacity. LÄS MER