Essays about: "Statistical quality control"

Showing result 1 - 5 of 80 essays containing the words Statistical quality control.

  1. 1. Supervised Machine Learning Modeling in Secondary Metallurgy : Predicting the Liquid Steel Temperature After the Vacuum Treatment Step of the Vacuum Tank Degasser

    University essay from KTH/Materialvetenskap

    Author : Roberto Vita; [2022]
    Keywords : Industy 4.0; Machine Learning; Statistical Modeling; Temperature Prediction; Vacuum Tank Degasser; Vacuum Treatment Step.; Industri 4.0; Maskininlärning; Statistisk modellering; Temperaturförutsägelse; Vakuumbehandlingssteg; Vakuumtankavgasare;

    Abstract : In recent years the steelmaking industry has been subjected to continuous attempts to improve its production route. The main goals has been to increase the competitiveness and to reduce the environmental impact. The development of predictive models has therefore been of crucial importance in order to achieve such optimization. READ MORE

  2. 2. Control charts for statistical quality control of Swedish stroke care using Riksstroke data

    University essay from Umeå universitet/Statistik

    Author : Edvin Morin; Martiina Novossad; [2022]
    Keywords : ;

    Abstract : The aim of this study was to implement statistical quality control to stroke care in Sweden by designing control charts for data from the Riksstroke registry to detect potential unnatural, or special cause variation in the years 2019-2020. Suitable control charts were designed for three quality indicators: the time elapsed from hospital admission to receiving reperfusion therapy (door-to-needle time), the proportion of patients directly admitted to stroke unit, and the fatality rate. READ MORE

  3. 3. Heterogeneous catalytic reactions studied with transient gas supply and event-averaged ambient pressure x-ray photoelectron spectroscopy

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/NanoLund: Center for Nanoscience

    Author : Qianhui Liu; [2022]
    Keywords : Ambient pressure x-ray photoelectron spectroscopy; Event-averaging; Pd 100 surface structure oscillation; Physics and Astronomy;

    Abstract : CO oxidation over Pd(100) is studied with ambient pressure x-ray photoelectron spectroscopy (APXPS). Cyclic gas composition pulsing of the CO:O2 ratio, combined with a new method using software based event-averaging by image recognition over many pulses, is used to improve the signal-to-noise ratio substantially. READ MORE

  4. 4. QC upgrade and verification for HS-Lenti RT Activity Kit

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Annie Eriksson; Elisabeth Lööf; Filippa Nilsson; Niklas Eckert Elfving; Sadat Mufti; Simon Oscarson; Tove Jonsson; [2022]
    Keywords : ;

    Abstract : The aim of this project was to present a cost-efficient quality control routine to ensure thefunctionality of HS-Lenti RT Activity Kit, an ELISA-based kit produced by Cavidi AB, thatscreens for lentiviruses such as HIV. Two main methods for quality control are presented inthis report; acceptance sampling and Statistical Process Control (SPC). READ MORE

  5. 5. A Graphical User Interface for IR-image-based Process Analysis : A tool for assessing root causes in paperboard variability

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Sabina Westergren Ahlin; Agnes Höglund; [2022]
    Keywords : paperboard; variability; FFT; Fast Fourier Transform; Fourier transform; app; application; GUI; Graphical User Interface;

    Abstract : Paperboard is produced in a large and complex process where many parameters can affect its quality. The common methods of analysing paperboard quality are through traversing point-like sensors that only measure a very small fraction of the produced paperboard. READ MORE