Search results for "kommunikasjon"
showing 10 items of 768 documents
Bi-objective multi-layer location–allocation model for the immediate aftermath of sudden-onset disasters
2019
International audience; Locating distribution centers is critical for humanitarians in the immediate aftermath of a sudden-onset disaster. A major challenge lies in balancing the complexity and uncertainty of the problem with time and resource constraints. To address this problem, we propose a location–allocation model that divides the topography of affected areas into multiple layers; considers constrained number and capacity of facilities and fleets; and allows decision-makers to explore trade-offs between response time and logistics costs. To illustrate our theoretical work, we apply the model to a real dataset from the 2015 Nepal earthquake response. For this case, our method results in…
Fotballklubbers forankring og betydning i det norske samfunn : en casestudie av Viking fotballklubb
2008
Masteroppgave i idrettsvitenskap- Universitetet i Agder 2008 Fotballklubbers lokale forankring og betydning vil ses nærmere på gjennom teoretisk refleksjon og empirisk observasjon der Viking FK er case. Teorien som anvendes er Luhmanns systemteori og det som danner det empiriske materialet er dokumenter og kvalitative intervjuer. Ifølge Luhmann (2000a) er sosiale fenomen, som eksemplifisert ved Viking FK i denne avhandlingen, sosiale system som danner seg selv gjennom å skille seg fra omverden. Skille mellom systemet selv og dets omverden danner en unik betraktning av seg selv som noe forskjellig fra omverden. Det utgjør systemets realitetsforståelse, dets mening som uttrykkes gjennom forve…
Real-Life Experiments based on IQRF IoT Testbed: From Sensors to Cloud
2018
Master's thesis Information- and communication technology IKT590 - University of Agder 2018 Internet of things (IoT) is the next generation internet technology which connects devices and objects intelligently to control data collected by diverse types of sensors, radio frequency identification and other physical objects. To address the challenges in IoT such as integrating artificial intelligent techniques with IoT concept, developing green IoT technologies and combining IoT and cloud computing, various platforms which support reliable and low power wireless connectivity are required. IQRF is a recently developed platform for wireless connectivity. It provides low power, low speed, reliable…
Feasibility analysis for forecasting inflow of unplanned work using machine learning techniques
2021
Master´s thesis in Information and Communication Technology (IKT590), University of Agder, Grimstad
Evaluation of IP over Bluetooth
2002
Masteroppgave i informasjons- og kommunikasjonsteknologi 2002 - Høgskolen i Agder, Grimstad The increasing use of Wireless technologies suggest that this kind of technology has a bright future. Today the most popular Wireless Local Area Networks are WLAN 802.11 and Bluetooth. They both have their strengths in different environments. Bluetooth was not initially an Internet technology, but over the years the focus on implementing Bluetooth nodes with Internet capability has increased. When we want to run IP over Bluetooth we need some kind of gateway to the Internet from Bluetooth, a network access point. This will be an important device in the thesis. The Bluetooth Special Interest Group has…
SCADA Intrusion Detection System Test Framework
2017
Master's thesis Information- and communication technology IKT590 - University of Agder 2017 Supervisory control and data acquisition (SCADA) systems play an important role in our critical infrastructure (CI). Several of the protocols used in SCADA communication are old and lack of security mechanisms. This master thesis presents a SCADA Intrusion Detection System Test Framework that can be used to simulate SCADA traffic and detect malicious network activity. The framework uses a signature-based approach and utilize two different IDS engines, Suricata and Snort. The IDS engines include rule-sets for the IEC 60870-5-104, DNP3 and Modbus protocols. The IDS engines ships detected events to a di…
IPv6 : prospects and problems : a technical and management investigation into the deployment of IPv6
2003
Masteroppgave i informasjons- og kommunikasjonsteknologi 2003 - Høgskolen i Agder, Grimstad IPv4 has been used for over twenty years, and will most likely be used in many years ahead. However, we are now experiencing that the IPv4 address space is running out, resulting in restrictions on who will be able to get these types of addresses assigned to them. Methods such as Network Address Translator (NAT) have been developed and implemented in order to save the IPv4 address space. It is said that this is not a good enough solution, as such techniques introduce new problems at the same time solving some. A new version of the Internet Protocol, IPv6, has been developed and is likely to replace I…
Study and performance evaluation of transport layer protocols over heterogeneous radio and satellite networks
2006
Masteroppgave i informasjons- og kommunikasjonsteknologi 2006 - Høgskolen i Agder, Grimstad Satellites have for some years made it possible to transfer data over long distances, and from desolated locations. Due to their natural broadcast ability they have some major advantages compared to terrestrial links. This ability has made satellites a useful tool for military, science, multimedia and wireless communication. Compared to a few years ago, we are today able to make more accurate measurements, in different environments. Sensors have recent years become more intelligent, and can work independently without being controlled by humans or computers. Other improvements are their mobility, and …
Mechanisms for OAM on MPLS in large IP backbone networks
2002
Masteroppgave i informasjons- og kommunikasjonsteknologi 2002 - Høgskolen i Agder, Grimstad The telecom industry has an ongoing work on the Operation and Maintenance (OAM) mechanisms for the MultiProtocol Label Switching (MPLS) technology. We are expecting that this technology will be the future platform for sending Internet Protocol (IP) packets through the backbone networks. OAM functionalities that exist or are proposed for MPLS are: Reachability and failure detection, avoidance of congested routers, Simple Network Management Protocol (SNMP) features, fast rerouting functions, traffic engineering and ad-hoc mechanisms like Ping. Our work shows that through a comparison of OAM mechanisms …
SIP based IP-telephony network security analysis
2004
Masteroppgave i informasjons- og kommunikasjonsteknologi 2004 - Høgskolen i Agder, Grimstad This thesis evaluates the SIP Protocol implementation used in the Voice over IP (VoIP) solution at the fibre/DSL network of Èlla Kommunikasjon AS. The evaluation focuses on security in the telephony service, and is performed from the perspective of an attacker trying to find weaknesses in the network. For each type of attempt by the malicious attacker, we examined the security level and possible solutions to flaws in the system. The conclusion of this analysis is that the VoIP service is exploitable, and that serious improvements are needed to achieve a satisfying level of security for the system.