Search results for "systemer"
showing 10 items of 132 documents
Optimalisering av modulasjon og koding for å muliggjøre høyere datarater i videreutviklingen av eksisterende Inmarsat satellittkommunikasjonssystemer
2002
Masteroppgave i informasjons- og kommunikasjonsteknologi 2002 - Høgskolen i Agder, Grimstad Inmarsat plasserer en ny generasjon satellitter i geostasjonærbane i løpet av 2003/04. De nye satellittene vil være 100 ganger kraftigere enn dagens og vil kunne øke kommunikasjons-kapasiteten betraktelig. Denne rapporten ser på muligheten til å øke dataraten i videreutviklingen av Nera SatCom AS sitt eksisterende utstyr når de nye satellittene tas i bruk. Det er vurdert kombinasjoner av modulasjonsmetoder og koderater for å kunne øke dataraten. Kombinasjonene er vurdert med hensyn på kritiske parametre i en satellitt link. Resultatene viser at en økning i dataraten er fullt mulig med lavere ordens m…
A Help Desk tool for sporadically occurring inquiries. Based on Microsoft Outlook 2000 and Computas GTA.
1999
Masteroppgave i informasjons- og kommunikasjonsteknologi 1999 - Høgskolen i Agder, Grimstad A help desk is intended to support inquiries from users of one or several systems. The help desk could act as an external service point to customers, just as well as an employee-based service. Because of the movement towards more complex computer environments, support departments need to be more flexible and more proactive in handling service requests. The primary goals of a support department are to increase the quality of service and to lower the cost needed to provide it. The combination of more complex systems to support and the continual demand of lowering the Total Cost of Ownership (TCO), supp…
Intersymbolinterferens - et problem i TETRA? : en studie i multipath miljø
2000
Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, Grimstad Bakgrunnen for denne rapporten var et fremsatt ønske om å foreta en undersøkelse om hvorvidt lange radioreflekser i et multipath miljø kunne forårsake intersymbol interferens. Det skulle fokuseres på Terrestial Trunked Radio (TETRA) standarden. Rapporten begynner med en gjennomgang av de aktuelle teknologiene som er viktige for gjennomføring av oppgaven. De viktigste teknologiene er TETRA standarden, aksess- og modulasjonsmetoder. TETRA er en avansert standard for digitalt mobilradiosystem med integrerte tale- og datatjenester. Mange av de samme prinsippene som Global System for Mobile communications…
Modelling of coverage in WLAN
2001
Masteroppgave i informasjons- og kommunikasjonsteknologi 2001 - Høgskolen i Agder, Grimstad The freedom of being connected to the Internet everywhere without any wires has been a dream for people many years. Now there seems to be an opening for this dream. While waiting for the UMTS technology IP-Zones are now being build. An IP-Zone is a public place where Wireless Local Area Network (WLAN) offers you a connection to the Internet. The WLAN technology has finally arrived with decent transmission speeds; with the introduction of IEEE 802.11b with transmission speeds up to11 Mbps. Subsequently we decided to take a closer look on this technology. This thesis presents an introduction to several…
Et studie i applikasjonsutvikling for ulike kommunikasjonsteknologier og UI på mobilterminaler
2004
Masteroppgave i informasjons- og kommunikasjonsteknologi 2004 - Høgskolen i Agder, Grimstad Den siste tiden er mobiltelefoners bruksområder blitt kraftig utvidet i form av støtte for tredjepartsprogramvare. SEA (Smart Energy Applications AS) har utviklet et trådløst styringssystem for smarthus basert på Bluetooth. I denne sammenhengen ønsker SEA å undersøke mulighetene for å benytte mobilterminaler til styring av Bluetooth nettverket. I denne oppgaven evalueres applikasjonsplattformer og kommunikasjonsteknologier, spesielt J2ME (Java 2 Micro Edition), Bluetooth og GPRS, med fokus på brukergrensesnitt. Videre diskuteres løsninger for trådløs styring av SEAs Bluetooth nettverk, for å avgjøre …
MDA and integration of legacy systems
2003
Masteroppgave i informasjons- og kommunikasjonsteknologi 2003 - Høgskolen i Agder, Grimstad OMG’s Model Driven ArchitectureTM, MDATM, is the new paradigm of software development and a new way of writing specifications and developing applications, based on a platform-independent model (PIM). MDA divorces implementation details from business functions. Thus, it is not necessary to repeat the process of modeling of applications or system’s functionality and behavior each time a new technology comes along. With the MDA, it is easier to integrate the new applications with the old application that is already installed. In the real time distributed telecommunication system, MDA addresses the chall…
Application development using J2ME : evaluation of intrinsic platform limitations
2005
Masteroppgave i informasjons- og kommunikasjonsteknologi 2005 - Høgskolen i Agder, Grimstad The operating system Symbian OS and the programming language Java have existed in a symbiosis since the first version of Symbian OS arrived on the mobile scene. This thesis will explore important aspects of the mobile version of Java, namely the Java 2 Micro Edition, on Symbian OS based mobile phones. Part one of the thesis reviews the structure and evolution of Java 2 Micro Edition and the Symbian OS, and the symbiosis between them. This is done through a thorough theoretical investigation of the programming interfaces offered to the developer. Particularly certain problem areas such as hardware con…
Application development using J2ME : architecture for device independence
2005
Masteroppgave i informasjons- og kommunikasjonsteknologi 2005 - Høgskolen i Agder, Grimstad The operating system Symbian OS and the programming language Java have existed in a symbiosis since the first version of Symbian OS arrived on the mobile scene. This thesis explores important aspects of the mobile version of Java, namely the Java 2 Micro Edition, on Symbian OS based mobile phones. Part one of the thesis reviews the structure and evolution of Java 2 Micro Edition and the Symbian OS, and the symbiosis between them. This is done through a thorough theoretical investigation of the programming interfaces offered to the developer. Particularly certain problem areas such as hardware control…
Rethinking the improvisation of digital health technology: A niche construction perspective
2022
Paid open access The COVID-19 pandemic has sent shock waves through healthcare organisations and catalysed an impromptu digital shift, creating a demand for telemedicine and other digital health technologies. Under such conditions, improvisation, adaptation, and innovation emerge as core dimensions to an organisation’s capacity to generate a response to crisis. This paper integrates a process perspective on the radical improvisation of a digital health technology and investigates how the radical improvisation of a digital health technology emerges and develops during a health crisis. Through a combination of supporting case evidence and literature, a multi-phase conceptual process model anc…
Digital Supply Chain Vulnerabilities in Critical Infrastructure: A Systematic Literature Review on Cybersecurity in the Energy Sector
2022
The main purpose of this paper is to identify the current state of the art on digital supply chain cybersecurity risks in critical infrastructure and how the term resilience is used in this context. To achieve this objective, the authors applied a systematic literature review method that summarises and analyses the studies relevant for the research topic. In total 33 papers were identified. The results show that limited research is done on supply chain risks in critical infrastructure. Relevant frameworks and methods for resilience of supply chains have also been identified. These frameworks and methods could be very beneficial for a more holistic management of cybersecurity risks in the in…