Now showing items 801-820 of 926

    • Atmospheric Icing Sensors - Capacitive Techniques 

      Mughal, Umair Najeeb; Virk, Muhammad Shakeel (Peer reviewed; Journal article; Tidsskriftsartikkel, 2013-01-22)
      The application of capacitive sensing technique is widely distributed in different physical domains primarily because of the diversity in dielectric permittivity and due to its minimum loading error and inertial effects. Atmospheric ice is a complex mixture of water, ice and air which is reflected in its complex dielectric constant. There are many existing atmospheric icing sensors but only few are ...
    • Torque and Axial Loading Physics for Measuring Atmospheric Icing Load and Icing Rate 

      Mughal, Umair Najeeb; Virk, Muhammad Shakeel (Peer reviewed; Journal article; Tidsskriftsartikkel, 2015-01-31)
      Measuring icing load and icing rate are important parameters for an atmospheric icing sensor. A new icing sensor has recently been designed and developed at Narvik University College for measuring atmospheric icing rate, icing load and icing type. Unlike the existing atmospheric icing sensors commercially available in market, which uses the axial loading for measuring icing load and icing rate, this ...
    • A field study of atmospheric icing analysis in a complex terrain of the high north 

      Rashid, Taimur; Mughal, Umair Najeeb; Mustafa, Mohamad; Virk, Muhammad Shakeel (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-12)
      Analyses of atmospheric icing events hold the key for computing the significant parameters leading to icing load calculations. In the cold regions of the high north, atmospheric icing loads on structures become important when it comes to design and safety of infrastructures. Furthermore, icing load calculations over a certain period of time provide a vital input for designers to improve the ...
    • Atmospheric ice accretion on non rotating vertical circular cyliner 

      Virk, Muhammad Shakeel; Mughal, Umair Najeeb; Polanco, Geanette (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-22)
      Study of atmospheric ice accretion on a non-rotating vertical circular cylindrical object was carried out at dry and wet ice conditions. Both numerical and experimental techniques were used during this study. 3D numerical study was carried out using computational fluid dynamics based approach, whereas experimental study was carried out at Cryospheric Environmental Simulator ‘CES’ in Shinjo, Japan. ...
    • To Measure Relative Permittivity of Atmospheric Ice Using Frequency Sweep 

      Mughal, Umair Najeeb; Shu, Beibei (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-31)
      The use of AD59333 IC for detecting atmospheric ice and atmospheric ice type was evaluated in this article. A prototype circuit was developed and was tested using a frequency sweep from 40 Hz to 20 kHz. The IC was calibrated using 100 kΩ resistor. The real and imaginary components of discrete Fourier transform were recorded at each frequency increment in order calculate the gain factor at each ...
    • Recognizing Bedside Events Using Thermal and Ultrasonic Readings 

      Danielsen, Asbjørn; Tørresen, Jim (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-09)
      Falls in homes of the elderly, in residential care facilities and in hospitals commonly occur in close proximity to the bed. Most approaches for recognizing falls use cameras, which challenge privacy, or sensor devices attached to the bed or the body to recognize bedside events and bedside falls. We use data collected from a ceiling mounted 80 60 thermal array combined with an ultrasonic sensor ...
    • Classification of electroncephao-graph signals by convolutional neural network 

      Lin, Jiaxin (Master thesis; Mastergradsoppgave, 2017-06-13)
      This thesis presents a brief introduction to epilepsy diagnosis use convolution neutral network. The datasets create through Electroencephao-graph(EEG) signal.Electroencephao-graph(EEG) is one of the most commonly signals recorded from humans like electrocardiogram(ECG). In this thesis give a short introduce about the EEG signal. Because EEG recordings are important in the diagnosis of epilepsy. But ...
    • Parabolic reflector for focusing of underwater acoustic waves 

      Rasmussen, Helene Liebak; Flø, Julianne Tjervåg (Master thesis; Mastergradsoppgave, 2017-06-15)
      Kongsberg Maritime has produced a transponder placed on the seabed designed for receiving and transmitting sound waves from vessels and ROVs. The soundwaves contain data regarding depth and location, and can be transformed to energy thus increasing the transponder battery lifetime. The transponder can only receive a small amount of energy, since its receiving area is small. This project aims to ...
    • Optimization of the mass of a sandwich plate that TAM is producing 

      Jensen, Bjarne Steinulv (Master thesis; Mastergradsoppgave, 2017-06-15)
      In this report the possibility to optimize the mass of a sandwich plate that TAM produces have been reviewed. Dimensions of the plate is 2602mm x 2404mm with a core thickness of 40mm, top facing of 3mm and bottom facing of 1mm. To simplify the computations they calculate with uniform facings of 1mm. The function of the sandwich plate is to lift livestock with wires that are fastened in the four ...
    • Development of small-scale intelligent manufacturing system (SIMS). A case study at Stella Polaris AS 

      Huang, Taoying (Master thesis; Mastergradsoppgave, 2017-06-14)
      Manufacturers in the resourceful Northern Peripheral and Arctic (NPA) region are mostly small and medium-sized enterprises (SMEs). Facing challenges primarily caused by the size and location of enterprises, these SMEs are constantly driven to take new measures to survive from the fierce competition against its domestic and international competitors, under the industrial environments of globalization ...
    • An improved approach for sustainable outsourcing strategy 

      Zheng, Yan (Master thesis; Mastergradsoppgave, 2017-06-14)
      In the modern business world, the trend that calls for a harmonious coexistence between economic development and the natural environment is growing ever stronger. Under such global context, the sustainability of a company has become more and more emphasized. As a crucial part of the supply chain management, the outsourcing process should as well be able to deal with such concerns under the guidance ...
    • Field data processing techniques 

      Balachin, Ivan (Master thesis; Mastergradsoppgave, 2017-06-14)
      The problem of global warming raised up interest to renewable energy. To reduce cost of wind energy is challenge. Before building of wind park such conditions like: average wind speed, direction, time for each wind, probability of icing. Also have to be considered amplitude of wind changes and their amount. This thesis presents Nygårdsfjellet wind turbine park data analysing for determining power ...
    • Wind resource assessment in cold climate regions 

      Jin, Jiayi (Master thesis; Mastergradsoppgave, 2017-06-14)
      Cold regions have good potential for wind energy development, but icing on wind turbines is recognize as a hindrance limiting the wind energy production in ice prone cold regions. This master thesis work is linked with Wind-CoE project of Arctic Technology Research Team and is aimed on better understanding of wind resource assessment in cold regions. Three years (2013-15) field SCADA data from ...
    • Transformation towards small-scale intelligent manufacturing system (SIMS). A case study of the workshop at UiT Narvik 

      Chai, Zhiwei (Master thesis; Mastergradsoppgave, 2017-06-14)
      With the development of increasing globalization of markets, the small and medium-sized enterprises (SMEs) are necessary to improve their innovation ability, and enhance their competitiveness in the global market. This project analyzes the global and region current situation of SMEs, and then provide the conclusion of advantages and challenges of SMEs, especially the sort of small manufacturing ...
    • Wireless industrial indoor localization and its application 

      Hu, Junsheng (Master thesis; Mastergradsoppgave, 2017-06-14)
      A complete, structural and comprehensive description of indoor localization technology is pre-sented in this paper. It concluded the basic techniques for distance measurement in indoor locali-zation, the basic localize principles, the topologies and algorithms which are often used in indoor localization area. Then how to perform indoor localization with sensors which are available in modern smartphones ...
    • Research on optimization of freeform surface operation 

      Liu, Dingjun (Master thesis; Mastergradsoppgave, 2017-06-14)
      Nowadays, many manufacturing companies need to face competition both in domestic and international level. Due to this circumstance, manufacturers recognize that one useful method to enhance their competence is reducing the lead-time of manufacturing. There are many researchers focused on minimize the time of actual cutting, tool path optimization and energy consumption optimization etc. However, few ...
    • General purpose process control unit 

      Mokrushev, Ivan (Master thesis; Mastergradsoppgave, 2017-06-12)
      The main purpose of the thesis is to make a control unit where different models can be tested with a number of motors, sensors, indicators, control devices which are used by Fischertechnik in training models. This work observes different types of speed motor control and investigates most useful method that could be implemented at the PLC Lab. It would be very useful to simulate separated parts of ...
    • Modelling and simulating a hybrid electric vehicle 

      Leikarnes, Ivar Roskifte (Master thesis; Mastergradsoppgave, 2017-06-12)
      This thesis presents an overview of the different types of hybrid electric vehicle structures and basic guidelines regarding choice of components. The simulation model of a hybrid electric vehicle was created for this thesis to investigate the impact on fuel efficiency in relation to rolling resistance coefficient and vehicle weight. Although the model is not designed for optimal engine operation, ...
    • Transition to DC distribution grids 

      Awoniyi, Taiwo (Master thesis; Mastergradsoppgave, 2017-08-15)
      "The war between AC and DC has emerged once again due to the rapid development and advancement of electric power technologies. Nowadays, power electronics and DC/DC converters are able to change voltage levels, which could only be achieved by an AC transformer hundred years ago. Rising trend development of electric vehicle and renewable energy technology have led to an urgency for re-evaluation of ...
    • Modeling and Simulation of Heat Transfer in Blocks with Thin Pipes 

      Karlsen, Renate (Master thesis; Mastergradsoppgave, 2017-06-13)
      "The report presents modified Stokes equations and natural convection-diffusion equations that are needed to implement a system which uses natural convection to transport energy from one area to another. The thesis also includes results from a numerical simulations that used these equations as arguments."