199,027 research outputs found
Fra ’sprog og litteratur’-dyaden til andre helhedsforståelser
No full textElf, N. (2024). Fra 'Sprog og litteratur'-dyaden til andre helhedsforståelser. In A. Ohlsson, A. Siggrell, P. Strand, & M. Sundby (Eds.), Femtonde nationella konferensen i svenska med didaktisk inriktning. Språk och litteratur – en omöjlig eller skön förening? Studia Rhetorica Lundensia (Vol. 8, pp. 27-52). Retorikämnet, Institutionen för kommunikation och medier, Lunds universitet
Fra ’sprog og litteratur’-dyaden til andre helhedsforståelser
No full textElf, N. (2024). Fra 'Sprog og litteratur'-dyaden til andre helhedsforståelser. In A. Ohlsson, A. Siggrell, P. Strand, & M. Sundby (Eds.), Femtonde nationella konferensen i svenska med didaktisk inriktning. Språk och litteratur – en omöjlig eller skön förening? Studia Rhetorica Lundensia (Vol. 8, pp. 27-52). Retorikämnet, Institutionen för kommunikation och medier, Lunds universitet
Fra ’sprog og litteratur’-dyaden til andre helhedsforståelser
No full textElf, N. (2024). Fra 'Sprog og litteratur'-dyaden til andre helhedsforståelser. In A. Ohlsson, A. Siggrell, P. Strand, & M. Sundby (Eds.), Femtonde nationella konferensen i svenska med didaktisk inriktning. Språk och litteratur – en omöjlig eller skön förening? Studia Rhetorica Lundensia (Vol. 8, pp. 27-52). Retorikämnet, Institutionen för kommunikation och medier, Lunds universitet
Threshold effects in SO(10) models with one intermediate breaking scale
No full textDespite the successes of the Standard Model of particle physics, it is known to suffer from a number of deficiencies. Several of these can be addressed within non-supersymmetric theories of grand unification based on SO (10). However, achieving gauge coupling unification in such theories is known to require additional physics below the unification scale, such as symmetry breaking in multiple steps. Many such models are disfavored due to bounds on the proton lifetime. Corrections arising from threshold effects can, however, modify these conclusions. We analyze all seven relevant breaking chains with one intermediate symmetry breaking scale, assuming the “survival hypothesis” for the scalar masses. Two are allowed by proton lifetime and two are disfavored by a failure to unify the gauge couplings. The remaining three unify at a too low scale, but can be salvaged by various amounts of threshold corrections. We parametrize this and thereby rank the models by the size of the threshold corrections required to save them
Exact and approximate formulas for neutrino mixing and oscillations with non-standard interactions
No full textWe present, both exactly and approximately, a complete set of mappings between the vacuum (or fundamental) leptonic mixing parameters and the effective ones in matter with non-standard neutrino interaction (NSI) effects included. Within the three-flavor neutrino framework and a constant matter density profile, a full set of sum rules is established, which enables us to reconstruct the moduli of the effective leptonic mixing matrix elements, in terms of the vacuum mixing parameters in order to reproduce the neutrino oscillation probabilities for future long-baseline experiments. Very compact, but quite accurate, approximate mappings are obtained based on series expansions in the neutrino mass hierarchy parameter eta equivalent to Delta m(21)(2)/Delta m(31)(2), the vacuum leptonic mixing parameter s(13) equivalent to sin theta(13), and the NSI parameters epsilon(alpha beta). A detailed numerical analysis about how the NSIs affect the smallest leptonic mixing angle theta(13), the deviation of the leptonic mixing angle theta(23) from its maximal mixing value, and the transition probabilities useful for future experiments are performed using our analytical results.QC 2010052
Testing lepton flavor models at ESSnuSB
No full textWe review and investigate lepton flavor models, stemming from discrete non- Abelian flavor symmetries, described by one or two free model parameters. First, we confront eleven one- and seven two-parameter models with current results on leptonic mixing angles from global fits to neutrino oscillation data. We find that five of the one- and five of the two-parameter models survive the confrontation test at 3 sigma. Second, we investigate how these ten one- and two-parameter lepton flavor models may be discriminated at the proposed ESSnuSB experiment in Sweden. We show that the three one-parameter models that predict sin delta(CP) = 0 can be distinguished from those two that predict vertical bar sin delta(CP)vertical bar = 1 by at least 7 sigma. Finally, we find that three of the five one-parameter models can be excluded by at least 5 sigma and two of the one-parameter as well as at most two of the five two-parameter models can be excluded by at least 3 sigma with ESSnuSB if the true values of the leptonic mixing parameters remain close to the present best-fit values
Probing lepton flavor models at future neutrino experiments
No full textNon-Abelian discrete symmetries provide an interesting opportunity to address the flavor puzzle in the lepton sector. However, the number of currently viable models based on such symmetries is rather large. High-precision measurements of the leptonic mixing parameters by future neutrino experiments, including ESSnuSB, T2HK, DUNE, and JUNO, will be crucial to test such models. We show that the complementarity among these experiments offers a powerful tool for narrowing down this broad class of lepton flavor models
The New Zealand Dairy Cooperatives’ Adaptation to Changing Market Conditions
No full textThis article examines the market conditions, the strategies, and the organizational structures of agricultural cooperatives. Based on the growing literature on cooperative organizational models, it is expected that the new organizational patterns in the New Zealand dairy cooperatives in the early 2000s are a consequence of market changes. Case studies of the three cooperatives are conducted, focusing on the organizational structures in terms of collective versus individualized attributes. The dissolution of the New Zealand Dairy Board created new market opportunities for the cooperatives. Hence, the co-operatives had reason to develop new market strategies, and in order to pursue these well, they changed their organizational structures. The observations indicate that more liberalized and open markets require cooperative organizational models with more individualized traits.Cooperative, Dairy, New Zealand, Fonterra, Market strategy, Organizational model, Agribusiness, Livestock Production/Industries,
Non-standard interactions using the OPERA experiment
No full textWe investigate the implications of non-standard interactions on neutrino oscillations in the OPERA experiment. In particular, we study the non-standard interaction parameter epsilon(mu tau) . We show that the OPERA experiment has a unique opportunity to reduce the allowed region for this parameter compared with other experiments such as the MINOS experiment, mostly due to the higher neutrino energies in the CNGS beam compared to the NuMI beam. We find that OPERA is mainly sensitive to a combination of standard and non-standard parameters and that a resulting anti-resonance effect could suppress the expected number of events. Furthermore, we show that running OPERA for five years each with neutrinos and anti-neutrinos would help in resolving the degeneracy between the standard parameters and epsilon(mu tau) . This scenario is significantly better than the scenario with a simple doubling of the statistics by running with neutrinos for ten years.QC 2010052
Solar Neutrino Day-Night Effect
No full textWe summarize the results of Ref. [M. Blennow, T. Ohlsson and H. Snellman, Phys. Rev. D 69 (2004) 073006, hep-ph/0311098] in which we determine the effects of three flavor mixing on the day-night asymmetry in the flux of solar neutrinos. Analytic methods are used to determine the difference in the day and night solar electron neutrino survival probabilites and numerical methods are used to determine the effect of three flavor mixing at detectors.QC 2011061
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