Fakultet for naturvitenskap og teknologi: Nye registreringer
Viser treff 4721-4740 av 5443
-
Spark-SPELL: Low-latency query-based search for gene expression compendia on cluster computers
(Master thesis; Mastergradsoppgave, 2014-06-01)Exploratory analyses are vital to fully realize the potential for scientific discoveries in large-scale biomedical data compendia. Specifically, most biomedical data analyses require a human expert to interactively explore the data to find novel hypotheses or conclusions. However, recent developments in biotechnology instruments are generating Tera-scale datasets. No interactive biomedical data ... -
Sphero NAV - Robotic Navigation and Control Platform
(Master thesis; Mastergradsoppgave, 2014-06-01)This thesis presents Sphero NAV, a camera based navigation and control platform for the robotic ball Orbotix Sphero. Sphero NAV is a Python library that serves as a base for developing new Sphero applications. The library allows for communication and control of one or multiple Sphero devices using Sphero’s rich API and functionality. Sphero NAV implements a tracker system that uses image based ... -
Complex Network Structure Patterns in Open Internet Communities for People with Diabetes
(Doctoral thesis; Doktorgradsavhandling, 2014-05-14)Type 2 diabetes is one of the greatest challenges that continues to grow because of the ageing population, increasing morbid obesity and sedentary lifestyles. Social media such as Facebook and YouTube have transformed the way people interact in general and on the Internet, but the role of social media in healthcare is still not well-understood. Current understanding of the association between ... -
Láhttu-A system for Retrieval and Consolidation of Personsal Data from Activity-Tracking Web Services.
(Master thesis; Mastergradsoppgave, 2014-06-01)In recent years, self-tracking and recording ourself has become increasingly popular. A large ecosystem of interconnected online activity-tracking web services that record, store, analyse, and visualize personal data is evolving to provide useful services to end-users. However, these personal data can be scattered over multiple web-services, which makes it difficult for an individual to manage and ... -
First record of catacrinid crinoid from the Lower Permian of Spitsbergen
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013)An early Permian (late Artinskian–Roadian) cladid crinoid (Catacrinidae gen. et sp. indet.) is reported for the first time from the Vøringen Member of the Kapp Starostin Formation of Spitsbergen. The specimen is partly articulated and preserves a considerable part of its stalk and a complete cup, but only the proximal portions of its arms. Thus, it can− not be identified with any degree of ... -
Focused fluid flow through the gas-hydrate stability zone on the Vestnesa Ridge, offshore W-svalbard
(Master thesis; Mastergradsoppgave, 2014-07-17)Abstract: Numerous unburied seafloor pockmarks are related to current methane-leakage at Vestnesa Ridge (~79° N), west of Svalbard. About 50 km long and 1-3 km wide, Vestnesa Ridge is a 1-2 km thick sediment drift to the north of the active Molloy transform – on the eastern spreading segment. With its crest at 1200-1300 m depth, the ridge is located on young (<19.6 Ma) oceanic crust. The entire ... -
Eatnu: a storage system for evaluating and persisting sensor data
(Master thesis; Mastergradsoppgave, 2014-06-01)The amount of information generated exceeeds the current available storage. Big Data, the Internet of Things and the increasing popularity of self-tracking gadgets call for new storage solutions to manage and analyze the data. To handle the constant flow of information, we have implemented Eatnu. Eatnu is a storage system designed to handle large data streams, where programmers can specify what ... -
Girji. Metacode extensibility in Girji
(Master thesis; Mastergradsoppgave, 2014-06-01)Online web services that store fitness and health related data is evolving to provide useful services to end-users. Examples of this include RunKeeper, Fitbit and MS HealthVault. These services interconnect creating an ecosystem of online web services. The services they provide are mainly targeted for the consumer marked. However, professional sport clubs may potentially benefit from integrating ... -
Controlled sharing of body-sensor data for sports analytics using code consent capabilities
(Master thesis; Mastergradsoppgave, 2014-05-15)With the advent of body sensor technology, athletes can easily record individual physiological metrics such as heart rate, steps, and blood sugar. In parallel, there is an increasing number of web services that use the raw body-sensor data as input to sports analytics. For the individual athletes, this can yield valuable insights on their performance and suggestions on individual training programs, ... -
Polar low trajectories in the Nordic Seas 1999-2013: a statistical analysis using kernel density methods
(Master thesis; Mastergradsoppgave, 2014-06-02)Polar lows are mesoscale cyclones of high intensity, frequently occurring in the Nordic Seas during the winter season. They usually form in baroclinic zones, for instance in regions near ice edges, and they are often maintained by organized convection. Polar lows are characterized by severe weather conditions like heavy snowfall, strong winds, icing and large sea waves. In addition to forecasting ... -
A Simple and Extendable Segmentation Method for Multi-Polarisation SAR Images
(Conference object; Konferansebidrag, 2013)This work presents a simple feature-based multi-channel SAR segmentation method that produces good, smooth, fast and robust results for image segmentation and interpretation. A basic set of six features produce good class distinction for general applications, and the method is easily extendable with new features and for multi-source data fusion. Optional steps of sub-sampling and Markov Random ... -
Sedimentary processes, late Cenozoic evolution and sediment yield on the continental margin offshore Troms, northern Norway
(Doctoral thesis; Doktorgradsavhandling, 2014-06-19) -
Optical Trapping, Levitation and Tracking of Microparticles Using Waveguides
(Master thesis; Mastergradsoppgave, 2014-06-02)Microparticles are trapped by optical forces created by the evanescent field present on the surface of an optical waveguide. An optical waveguide loop with an intentional gap is used to propel and stably hold the trapped particles. The particles are trapped in the gap of the loop by counter-diverging fields. Simulations indicate that particles trapped in the gap on a strip waveguide will be levitated. ... -
Simulating and characterizing carbon based solar thermal absorbers
(Master thesis; Mastergradsoppgave, 2014-05-16)The main objective of this project is to determine and characterize the optical and structural properties of carbon nanotube (CNT) coated aluminum substrates to facilitate better understanding regarding their suitability for solar absorption. In this way, it may be possible to utilize this material to produce improved and more efficient spectrally selective solar thermal absorbers in solar thermal ... -
Origin and accumulation mechanism of shallow gas accumulations in the SW Barents Sea
(Master thesis; Mastergradsoppgave, 2014-06-02)Events associated with shallow gas accumulations are reported all over the Norwegian continental shelf. These accumulations are potentially dangerous geo-hazards related to drilling activity, but they can also be of economic interest if the accumulated volumes are large. Petroleum in the Barents Sea has been influenced by the late periods of uplift and erosion creating a complex province. The exact ... -
Time-lapse seismic interpretation of injected CO2 plume at the Sleipner Field, North Sea
(Master thesis; Mastergradsoppgave, 2014-06-02)One of the methods to cope with the increase of emitted greenhouse gases has been to capture CO2 gas from a point source and storing it within the Earths subsurface; “Carbon Capture and Storage” (CCS). Since 1996, Statoil and its partners have injected CO2 into a saline aquifer called the Utsira formation located in the North Sea. About 0.9Mt of CO2 is injected into the formation yearly, with a ... -
Sedimentological and Stratigraphic study of glaciomarine clays and postglacial beach deposits exposed in a raised coastal section beyond the Tromsø Lyngen (Younger Dryas) end moraine at Spåkenes, Lyngen, northern Norway
(Master thesis; Mastergradsoppgave, 2014-05-15)Thick succession of suspension settled muds, deposited from meltwater plumes, which are frequently interbedded with sandy mass flows deposits. Between conformable beds, discrete units have been in intensely deformed, often into large recumbent folds with complex structure. Suspension settled muds are observed in three distinct structural facies, namely massive clays, rhythmically banded muds and ... -
Quantifying influence of local air pollution on measurements in Ny-Ålesund and at the Zeppelin station
(Master thesis; Mastergradsoppgave, 2014-06-02)In order to keep the scientific significance of the Ny-Ålesund station on Svalbard as the key place for the monitoring of background air it is needed to assess the influence from local human activities on the air quality. Whether research and tourist activity continues to grow or restrictions to be implied the change of impact may affect air chemistry data quality. Therefore the identification of ... -
Long Range Memory in Time Series of Earth Surface Temperature
(Doctoral thesis; Doktorgradsavhandling, 2014-05-23)Long-range memory (LRM) has been found in numerous natural data records, both in geophysics and other fields. In this thesis LRM in surface temperature time series is studied, and comparison with short-range memory (SRM) models performed. Trends are important in climate studies, but the trend definition is ambiguous. Two different approaches are included here: the trend described as a function ... -
ROPE: Reducing the Omni-kernel Power Expenses
(Master thesis; Mastergradsoppgave, 2014-05-15)Over the last decade, power consumption and energy efficiency have arisen as important performance metrics for data center computing systems hosting cloud services. The incentives for reducing power consumption are several, and often span economic, technological, and environmental dimensions. Because of the vast number of computers currently employed in data centers, the economy of scale dictates ...