Search results for "Handling"
showing 10 items of 345 documents
Connection between the need for compression, bandwidth and quality for multimedia transmissions in UMTS
2004
Masteroppgave i informasjons- og kommunikasjonsteknologi 2004 - Høgskolen i Agder, Grimstad The 1990s made mobile communication common among the majority in many countries, with user penetration as high as in the 80th percentile. The mobile telecommunication services has evolved from the analog services provided in the 1980s, to the current digital systems with limited packet data services, and further to the 3rd generation (3G) systems that are currently being rolled out across the world. These systems have been developed with extended data rate support in mind. They are specified to support transport of various data content, with different needs for bandwidth and delay constraints. Amongs…
UMTS authentication and key agreement : a comprehensive illustration of AKA procedures within theUMTS system
2001
Masteroppgave i informasjons- og kommunikasjonsteknologi 2001 - Høgskolen i Agder, Grimstad This report will give information on the 3rd generation mobile communication system, UMTS, its Authentication and Key Agreement (AKA) procedures and security aspects. It will also describe the ‘UMTS AKA Illustrator’ which is an animation program we have created to explain the AKA procedures. The AKA procedure is the essence of authenticating a user to the network and vice versa. This is possible due to the pre-shared secret key K stored in the Authentication Centre (AuC) and in the UMTS Subscriber Identity Module (USIM). The other parameters are derived from this key. During an AKA procedure, message…
Bluetooth : overføring av EKG-prosessdata via Bluetooth-teknologi
2000
Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, Grimstad Denne oppgaven tar for seg mulighetene for å overføre EKG-prosessdata via Bluetooth-teknologi. EKG-prosessdata er signaler generert ut i fra elektrisk aktivitet på hjertet. Bluetooth skal i denne sammenhengen fungere som et overføringsmedium, en bærer, for slik EKG-prosessdata mellom en pasient og en monitor. Videre tar oppgaven for seg interoperabiliteten med WAP, der WAP skal fungere som en alarm. Systemintegrasjonen mellom Bluetooth og WAP gjøres med bruk av en pasient-database. Et EKG signal har en båndbredde fra 0-150 Hz. Det er mulig å kode dette signalet i forskjellige formater. Disse formaten…
Development of a multi-player WebSim in BT
1999
Masteroppgave i informasjons- og kommunikasjonsteknologi 1999 - Høgskolen i Agder, Grimstad This report investigates the development of multi-player WebSims using the Powersim Metro technology. A WebSim is a simulation of some phenomenon that can be played as a game on the Internet or Intranet. The WebSim front-end is the user interface to a simulation model that has been developed with a system dynamics modeling tool like Powersim Constructor. The WebSim front-end is an interactive interface that allows a user to enter inputs to the underlying simulation model and start the simulation. The user can see the results of the simulation in form of time-graphs or time-tables. WebSims can be sing…
Kontekstbasert arbeids- og informasjonsorganisering
1999
Masteroppgave i informasjons- og kommunikasjonsteknologi 1999 - Høgskolen i Agder, Grimstad I denne oppgaven ble først begrepet kontekstbasert arbeids- og informasjonsorganisering posisjonert i forhold til relaterte fagområder. Begrepet kontekstbasert arbeids- og informasjonsorganisering fantes ikke som frittstående begrep i den teorien som ble undersøkt. De ulike fagområdene behandlet i varierende grad problemstillinger relatert til kontekstbasert arbeids- og informasjonsorganisering. Knowledge Management ble funnet som det fagområdet som hadde mest fellestrekk med begrepet. For å kunne klassifisere ulike kontekster ble en del parametre vurdert. De som ble funnet best egnet, basert på vurd…
Overføring av prosessdata via WAP
2000
Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, Grimstad Denne oppgaven ser på mulighetene for å overføre prosessdata via en WAP-telefon. Prosessdataen som skal overføres er et EKG-signal. EKG er et signal som beskriver forandringer i elektrisk aktivitet på hjertet. En WAP-telefon skal i denne oppgaven fungere som en alarm som en hjertepasient hele tiden har med seg. Dersom pasienten slår alarm, skal WAP-telefonen hente ut pasientens EKG fra en database og sende disse til en alarmsentral, der det skal være mulig og følge pasientens utvikling. Et EKG signal har en båndbredde fra 0-150 Hz. Det er mulig å kode dette signalet i forskjellige formater. Disse for…
Evaluation of OSA API's for 3rd party developers of Telco-services
2002
Masteroppgave i informasjons- og kommunikasjonsteknologi 2002 - Høgskolen i Agder, Grimstad Changes in business models introduce new actors to the telecom business. A set of new demands occurs and to handle this, a technical enabler like OSA is needed. Telenor R&D, which often provides Telco services in research projects, must form an opinion concerning this framework. Thus an evaluation of OSA is inquired. This thesis presents an introduction and evaluations of the OSA framework, further, a closer look at two of the OSA API’s (User Status and Terminal Capabilities) are made. To enhance the evaluation, Youngster has been utilized as an example of where the OSA framework can be used. An impl…
A Generative Adversarial Network approach using Latent Space Manipulation for Clothing Display on Synthetic Images Using the latent space of an non-p…
2020
Master's thesis in Information- and communication technology (IKT590) The Fashion industry is continuously inventing new clothing. A significant bottleneck when introducing newly designed clothing to the market is advertisements. This thesis looks into the possibility of streamlining this bottleneck through the automated manipulation of clothing onto generated humans. A common problem in Generative Adversarial Networks (GAN) is the black-box nature of the generated re-sults. Meaning a user has no direct input on the traits of images produced. GANs are capable of exceptional levels of "creativity" when utilizing its generator to create novel results. For instance, it is possible to project a…
Simulated testing in mobile datacom systems (GPRS/UMTS) : postgraduate thesis information and communication technology
2000
Masteroppgave i informasjons- og kommunikasjonsteknologi 2000 - Høgskolen i Agder, Grimstad The assignment described in this thesis is given by Ericsson AS and gives an evaluation of simulation and testing tools used in their development projects. Since Ericsson wants to change their testing process the task was to evaluate and suggest a solution to how this could be done. In order to make testing available for all developers it was required to run tests independent of hardware. Thus they wanted to simulate the hardware resources. Originally, the intention was to use the test environment used otherwise in Ericsson. This proved to cause many problems because the project became dependent of o…
3D Convolution Neural Networks for Medical Imaging; Classification and Segmentation : A Doctor’s Third Eye
2020
Master's thesis in Information- and communication technology (IKT591) In this thesis, we studied and developed 3D classification and segmentation models for medical imaging. The classification is done for Alzheimer’s Disease and segmentation is for brain tumor sub-regions. For the medical imaging classification task we worked towards developing a novel deep architecture which can accomplish the complex task of classifying Alzheimer’s Disease volumetrically from the MRI scans without the need of any transfer learning. The experiments were performed for both binary classification of Alzheimer’s Disease (AD) from Normal Cognitive (NC), as well as multi class classification between the three st…