Now showing items 564-583 of 2068

• #### Exact algorithms for MAX-2SAT and MAX-3SAT via multidimensional matrix multiplication ﻿

(The University of Bergen, 2015-06-01)
In this thesis it is showed how an $O(n^{4-\epsilon})$ algorithm for the cube multiplication problem (that is defined in the thesis) would imply a faster than naive $O^{*}(2^{n(1-\frac{\epsilon}{4})})$ algorithm for the ...
• #### Exact algorithms for treewidth and minimum fill-in ﻿

(SIAM Journals, 2006)
• #### Exact and Superconvergent Solutions of the Multi-Point Flux Approximation O-method: Analysis and Numerical Tests ﻿

(The University of Bergen, 2014-06-02)
In this thesis we prove the multi-point flux approximation O-method (MPFA) to yield exact potential and flux for the trigonometric potential functions u(x,y)=sin(x)sin(y) and u(x,y)=cos(x)cos(y). This is done on uniform ...
• #### Exclusive J /ψ photoproduction off protons in ultraperipheral p-Pb collisions at √sNN = 5.02TeV ﻿

(American Physical Society, 2014-12-05)
We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at √sNN=5.02  TeV. Events are selected with a dimuon pair produced either in the rapidity ...
• #### Exhumation history and tectonic across the Hardangerfjord Shear Zone, using apatite fission track thermochronology ﻿

(The University of Bergen, 2012-02-09)
ABSTRACT The Hardangerfjord Shear Zone (HSZ) is a large scale, ductile low angle shear zone, with SW-NE trending and NW dipping direction in the Caledonian crust. This zone has been formed at about 408-402 Ma (Fossen, ...
• #### Existence of a classical solution of a parabolic PIDE associated with ruin probability ﻿

(The author, 2012-06-18)
In this article we will prove existence of a classical solution of the integro-differential equation for ruin probability in finite time stated in Paulsen (2008).
• #### Exitomelita sigynae gen. et sp. nov.: a new amphipod from the Arctic Loki Castle vent field with potential gill ectosymbionts ﻿

(Springer, 2011-11-02)
The newly discovered deep-sea hydrothermal vent field ‘‘Loki’s Castle’’ at 2,350 m depth at 70 N on the Knipovich Ridge north of the island Jan Mayen is the only known black smoker field from the Arctic Ridge system. This ...
• #### An expanded calibration model for inferring lakewater and air temperatures from fossil chironomid assemblages in northern Fennoscandia ﻿

(SAGE, 1999)
Chironomid-temperature inference models based on an expanded data set of surface-sediment and limnological data from 53 Subarctic lakes in northern Fennoscandia have been developed using eight different numerical techniques, ...
• #### An experiment to improve scientific communication skills amongst Norwegian students ﻿

(Program for læringsforskning, Universitetet i Bergen, 2006)
Hilary Birks summerer opp 15 års erfaring med en student-/stipendiat-/postdoc-/ kollegagruppe på Botanisk institutt. Hver 3. uke har de hatt lunsjmøter med faglige presentasjoner og livlige diskusjoner på engelsk. Hun ...
• #### Experimental and theoretical study of the flow, aggregation and deposition of gas hydrate particles ﻿

(The University of Bergen, 2010-06-21)
Gas hydrate plugging is considered to be a very problematic topic during petroleum production and transportation. The phenomenon of hydrate plug formation involves inter-related effects related to different disciplines, ...
• #### Experimental and theoretical study on the effect of wall roughness on the phenomenon end of the vortex in swirl tubes ﻿

(The University of Bergen, 2011-11-18)
In this thesis, a combination of experimental measurements and numerical simulations are used to investigate the phenomenon "End of the Vortex" in swirl tubes. The main focus here has been comparing swirl tubes containing ...
• #### Experimental Characterization of High-Pressure Natural Gas Scrubbers ﻿

(The University of Bergen, 2006-10-20)
Scrubber design practice today is largely based on experimental data generated at ambient conditions with model fluid system such as air-water. Though good efficiency is often measured in the lab, real natural gas scrubbers ...
• #### Experimental characterization of the marine atmospheric boundary layer in the Havsul area, Norway ﻿

(Elsevier, 2013)
Offshore wind energy applications depend strongly on an improved knowledge of the physical processes taking place in marine atmospheric boundary layer (MABL). In particular the better understanding of the complex interactions ...
• #### An experimental investigation of angled sight flame detectors with 850nm photodiode sensor. Development of experimental equipment ﻿

(The University of Bergen, 2014-11-20)
This thesis describes an experimental investigation of applying photodiodes as sensors inside flame detectors exposed to laminar, transient and turbulent gas explosions, and reflecting environment of various degrees. ...
• #### Experimental investigation of deformation mechanisms during shear-enhanced compaction in poorly lithified sandstone and sand ﻿

(Wiley, 2013-08-27)
Shear-enhanced compaction in shallow sandstone reservoirs has been investigated in laboratory experiments using high-pressure triaxial testing of poorly lithified sandstone and sand. We have studied the deformation ...
• #### Experimental investigation of particle trajectory through an hydrocyclone using a Positron Emission Tomography (PET) scanner ﻿

(The University of Bergen, 2010-08-31)
Hydrocyclones are much used in process technology and in many different industrial applications. In the oil and gas industry the hydrocyclones, both gas-solid and liquidsolid cyclones are widely used. Getting the sand ...
• #### An Experimental Investigation of the Effect of Rust and Mechanical damage on the Maximum Experimental Safe Gap for Ethylene Gas Explosions ﻿

(The University of Bergen, 2012-05-31)
Gas explosions are a great hazard in the industry where flammable substances are handled. Engines, switches and other electrical equipment can act like ignition sources where an explosive atmosphere is present. Possible ...
• #### Experimental Investigation of the Impedance Measurement Method for Detecting Dust and Gas Flames in a Flame Acceleration Tube. Development of Experimental Apparatus ﻿

(The University of Bergen, 2009-06-02)
This thesis describes an experimental investigation of flame propagation in a 3.6-meter Flame Acceleration Tube (FAT) by the use of optical probes for flame detection and dust concentration measurements. The experiments ...
• #### Experimental Investigation of the Impedance Measurement Method for Detecting Dust and Gas Flames in a Flame Acceleration Tube. Development of Experimental Apparatus ﻿

(The University of Bergen, 2009-06-02)
This master thesis describes an impedance measurement device built for investigating flame propagation in a Flame Acceleration Tube, FAT. This tube is 3.6 m long, and has been instrumented with thermocouples, pressure ...
• #### An Experimental Investigation of the Influence of Mechanical Damage and Rust on the Ability of Flame Gaps to Prevent Hydrogen Gas Explosion Transmission ﻿

(The University of Bergen, 2012-05-31)
The present work investigates the influence of rusted and mechanical damaged flame gaps, and the ability of these flame gaps to prevent a hydrogen gas explosion transmission between an inner and outer explosion chamber. ...