Sökning: "Observational data"

Visar resultat 1 - 5 av 430 avhandlingar innehållade orden Observational data.

  1. 1. Disinformative and Uncertain Data in Global Hydrology : Challenges for Modelling and Regionalisation

    Författare :Anna Kauffeldt; Sven Halldin; Allan Rodhe; Chong-Yu Xu; András Bárdossy; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Data uncertainty; Discharge; Disinformative data; Evaporation; Flow-duration curve; Global hydrology; Neural networks; Numerical weather prediction; Precipitation; Quality control; Regionalisation; Ungauged basins; Water balance; Avdunstning; avrinningsområden utan vattenföringsdata; dataosäkerhet; desinformativa data; global hydrologi; kvalitetskontroll; nederbörd; neurala nät; numerisk vädermodell; regionalisering; varaktighetskurva; vattenbalans; vattenföring; Hydrology; Hydrologi;

    Sammanfattning : Water is essential for human well-being and healthy ecosystems, but population growth and changes in climate and land-use are putting increased stress on water resources in many regions. To ensure water security, knowledge about the spatiotemporal distribution of these resources is of great importance. LÄS MER

  3. 2. Design and analysis with observational data : Protocols and modeling with the aim of causal inference

    Författare :Paulina Jonéus; Mattias Nordin; Per Johansson; Jenny Häggström; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; observational studies; protocols guidelines; epidemiology; public health; prostate disease; Statistics; Statistik;

    Sammanfattning : This thesis consists of six papers that study the design and analysis with observational data.There is a growing interest in using real-world evidence (RWE) for regulatory purposes. The belief is that observational data can make drug developmentmore efficient and speed up patient access to new drugs. LÄS MER

  4. 3. Understanding and Evaluating Policies for Sequential Decision-Making

    Författare :Anton Matsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Observational data; Sequential decision-making; Reinforcement learning; Off-policy evaluation; Rheumatoid arthritis;

    Sammanfattning : Sequential-decision making is a critical component of many complex systems, such as finance, healthcare, and robotics. The long-term goal of a sequential decision-making process is to optimize the policy under which decisions are made. LÄS MER

  5. 4. Benefits and harms of Bisphosphonates : an observational study

    Författare :Jonathan Bergman; Peter Nordström; Miia Kivipelto; Håkan Melhus; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; osteoporosis; fracture; alendronate; risedronate; zoledronic acid; glucocorticoid; mortality; osteonecrosis; register; registry; real-world evidence; epidemiology; Geriatrics; geriatrik; epidemiologi; Epidemiology;

    Sammanfattning : Background: Bisphosphonates are first-line treatment for osteoporosis, but osteoporosis is considered an undertreated disease. The general aim of this dissertation was to further study the benefits and harms of bisphosphonates. LÄS MER

  7. 5. Combining User Feedback and Monitoring Data to Support Evidence-based Software Evolution

    Författare :Farnaz Fotrousi; Samuel Fricker; Markus Fiedler; Jürgen Börstler; Blekinge Tekniska Högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; User feedback; Monitoring data; Evidence-based software engineering; Software evolution; Programvaruteknik; Software Engineering;

    Sammanfattning : Context. Companies continuously explore their software systems to acquire evidence for software evolution, such as bugs in the system and new functional or quality requirements. LÄS MER