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  • Abulaiti, Yiming, et al. (författare)
  • Search for the Standard Model Higgs boson produced by vector-boson fusion and decaying to bottom quarks in root s=8TeV pp collisions with the ATLAS detector
  • 2016
  • Ingår i: Journal of High Energy Physics (JHEP). - 1126-6708. ; :11
  • Tidskriftsartikel (refereegranskat)abstract
    • A search with the ATLAS detector is presented for the Standard Model Higgs boson produced by vector-boson fusion and decaying to a pair of bottom quarks, using 20.2 fb(-1) of LHC proton-proton collision data at root s - 8 TeV. The signal is searched for as a resonance in the invariant mass distribution of a pair of jets containing b-hadrons in vector-boson-fusion candidate events. The yield is measured to be -0.8 +/- 2.3 times the Standard Model cross-section for a Higgs boson mass of 125 GeV. The upper limit on the cross-section times the branching ratio is found to be 4.4 times the Standard Model cross-section at the 95% confidence level, consistent with the expected limit value of 5.4 (5.7) in the background-only (Standard Model production) hypothesis.
  • Agrawal, Piyush, et al. (författare)
  • Long Term Channel Characterization for Energy Efficient Transmission in Industrial Environments
  • 2014
  • Ingår i: IEEE Transactions on Communications. - 0090-6778 .- 1558-0857. ; 62:8, s. 3004-3014
  • Tidskriftsartikel (refereegranskat)abstract
    • One of the challenges for a successful use of wireless sensor networks in process industries is to design networks with energy efficient transmission, to increase the lifetime of the deployed network while maintaining the required latency and bit-error rate. The design of such transmission schemes depend on the radio channel characteristics of the region. This paper presents an investigation of the statistical properties of the radio channel in a typical process industry, particularly when the network is meant to be deployed for a long time duration, e. g., days, weeks, and even months. Using 17-20-h-long extensive measurement campaigns in a rolling mill and a paper mill, we highlight the non-stationarity in the environment and quantify the ability of various distributions, given in the literature, to describe the variations on the links. Finally, we analyze the design of an optimal received signal-to-noise ratio (SNR) for the deployed nodes and show that improper selection of the distribution for modeling of the variations in the channel can lead to an overuse of energy by a factor of four or even higher.
  • Ahlund, Claes (författare)
  • Krig och kultur i konservativ och radikal belysning Annie Åkerhielm och Frida Stéenhoff från sekelskiftet till första världskriget
  • 2005
  • Ingår i: Samlaren : tidskrift för svensk litteraturvetenskaplig forskning. - Uppsala : Svenska Litteratursällskapet. - 0348-6133 .- 2002-3871. ; 126, s. 97-150
  • Tidskriftsartikel (refereegranskat)abstract
    • Claes Ahlund, Krig och kultur i konservativ och radikal belysning. Annie Åkerhielm och Frida Stéenhoff från sekelskiftet till första världskriget. (War and Culture in a Conservative and a Radical Light: Annie Åkerhielm and Frida Stéenhoff from the Turn of the Century to the First World War.)The purpose of the essay is to discuss the conceptions of war and of contemporary society and culture put forward in the writings of two diametrical political opposites: the conservative Annie Åkerhielm (1869–1958) and the radical feminist Frida Stéenhoff (1865–1945). Åkerhielm and Stéenhoff both engaged in the debate on war and culture by publishing a number of pamphlets and polemic articles, but they were also writers of fiction. Åkerhielm published novels, short stories and poetry; Stéenhoff, a number of plays, but also some novels.Annie Åkerhielm and Frida Stéenhoff represent different political parties: Åkerhielm, the conservative and pro-German nationalists; Steenhoff, the radical liberal pacifists. Åkerhielm advocates the value of war and stresses the individual’s duty to subordinate himself to the state, opinions closely related to those of anti-democratic and anti-liberal thinkers such as Rudolf Kjellén and Werner Sombart and propagated as "The Ideas of 1914". Stéenhoff, on the other hand, upholds a radical interpretation of the tradition of the Enlightenment, emphasizing the rights and liberty of the individual, including women, and embracing an optimistic theory of evolution. This makes her a pronounced representative of the antagonistic tradition, "The Ideas of 1789", identified by Kjellén as a major threat to the well-being of the nation.The outbreak of the war, being a major setback for international cooperation and the peace movement, temporarily caused Frida Stéenhoff to mistrust her own faith in progress and the final triumph of her ideals of love, peace, and liberty. At the end of the war, Annie Åkerhielm suffered a similar dejection caused by the collapse of Germany and the ideals and the culture it represented. Stéenhoff’s reactions are discussed with the novel Ljusa bragder och mörka dåd (1915) ("Bright feats and dark deeds"), the pamphlet "Krigets herrar – världens herrar! (1915) ("The lords of war — the lords of the world"), and the essay "Den nya moralen och Ellen Key som dess tolkare" (1919, "The new morality and Ellen Key as its interpreter") as a point of departure. The discussion of Åkerhielm’s reactions to the war centres on the poem "Emden" (1914), the collection of short stories, Sagor och fantasier (1915, "Tales and fantasies"), the pamphlet Antidemokratiska stämningsstunder (1917, "In the anti-democratic mood"), and the novel Anno Domini (1921).
  • Ali Khan, A., et al. (författare)
  • Does in utero exposure to synthetic glucocorticoids influence birthweight, head circumference and birth length? : A systematic review of current evidence in humans
  • 2011
  • Ingår i: Paediatric and Perinatal Epidemiology. - 0269-5022 .- 1365-3016. ; 25:1, s. 20-36
  • Forskningsöversikt (övrigt vetenskapligt)abstract
    • Synthetic glucocorticoids are the mainstay treatment for stimulating lung maturation in threatened preterm delivery. Animal studies suggest that in utero exposure to glucocorticoids leads to a reduction in birth size. Smaller birthweight has been associated with higher risk of many chronic diseases. Therefore, the authors undertook a systematic review of human studies examining the association between synthetic glucocorticoid treatment and birth size. Medline, EMBASE, PubMed, Cochrane, Google scholar and Institute of Life Science databases were searched for studies published between 1978 and 2009 investigating the association between synthetic glucocorticoids and birthweight, head circumference, birth length and ponderal index. All studies controlling for gestational age were examined. Seventeen studies were included in the analysis. Nine out of 17 studies reported a reduction in birthweight (range 12-332 g), five of nine a reduction of head circumference (range 0.31-1.02 cm) and two of four a reduction of 0.8 cm in birth length. Despite methodological inconsistencies and limitations that impede clear conclusions, the evidence suggests an association between in utero exposure to synthetic glucocorticoids and reduced birth size.
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