Sökning: "time trend"

Visar resultat 1 - 5 av 718 avhandlingar innehållade orden time trend.

  1. 1. Återbesök i Eskilstuna : En undersökning av morfologisk variation och förändring i nutida talspråk

    Författare :Eva Sundgren; Lars-Gunnar Andersson; Bengt Nordberg; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Scandinavian languages - general; Sociolinguistic variation; language change; spoken Swedish; Eskilstuna; morphology; real time; apparent time; panel study; trend study; individual change; generational change; intralinguistic constraints; salience; quantitative analysis; implicational scaling; local integration; social mobility; Nordiska språk - allmänt; Scandinavian languages; Nordiska språk; nordiska språk; Scandinavian Languages; Languages and linguistics;

    Sammanfattning : Real-time replications of empirical studies of language use are scarce. This study of language change in real time replicates an investigation of the social variation of spoken Swedish in the medium-sized town of Eskilstuna, using data collected 29 years after the original study. LÄS MER

  3. 2. Validation and time series analysis of global stratospheric data sets

    Författare :Ashley Jones; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; OSIRIS; MIPAS; remote sensing; data assimilation; Trend; stratosphere; ozone; linear regression; Odin; validation;

    Sammanfattning : The depletion of ozone from the stratosphere and the impact of global warming have been identified as phenomena caused as a result of anthropogenic activity. Scientists are thus trying to find quicker and more reliable ways to analyse these environmental problems. LÄS MER

  4. 3. No time to waste : Pre-hospital actions and time delays in patients with ST elevation myocardial infarction – temporal trends and prognostic impact on short- and long-term survival

    Författare :Maria Ericsson; Ingela Thylén; Anna Strömberg; Sofia Sederholm Lawesson; Emil Hagström; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Background: In ST-elevation myocardial infarction (STEMI) patients, a rapid diagnosis is imperative to reduce total ischaemic time minimizing risk for heart failure, serious arrhythmias, or death. Prehospital context is complex, and the patient delay constitute major part of the pre-hospital phase. LÄS MER

  5. 4. On the returns of trend-following trading strategies

    Författare :Christian Lundström; Tomas Sjögren; Jussi Nikkinen; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Bootstrap; Commodity Trading Advisor funds; Contraction-Expansion principle; Crude oil futures; Futures trading; Opening Range Breakout strategies; S P 500 futures; Technical analysis; Time series momentum; Time-varying market inefficiency; nationalekonomi; Economics;

    Sammanfattning : Paper [I] tests the success rate of trades and the returns of the Opening Range Breakout (ORB) strategy. A trader that trades on the ORB strategy seeks to identify large intraday price movements and trades only when the price moves beyond some predetermined threshold. LÄS MER

  7. 5. Confronting new challenges in chemical assessment : emerging contaminants and climate change

    Författare :Deguo Kong; Ian Cousins; Matthew MacLeod; Mick Whelan; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; emerging chemicals; climate change; fate; multimedia model; risk assessment; physical-chemical property; uncertainty; Arctic; Baltic; time series; persistent organic pollutants; temporal trend; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Both chemical-specific (e.g. physical-chemical properties) and environmental (e.g. LÄS MER