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Butikskedjorna inom dagligvaruhandeln är viktiga aktörer i arbetet med att förbättra ekologiska och sociala aspekter av livsmedelsförsörjningen och även för att uppmuntra till hållbara produkter på marknaden. Med tanke på deras stora inflytande på andra aktörer i produktkedjan i hållbarhetsarbetet tillskrivs butikskedjorna ofta benämningen grindvakt. Denna position innebär också f
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- Allmänheten anser generellt att klimatfrågan är viktig, och förklarar sig beredd att agera både som medborgare och konsumenter. Samtidigt varierar allmänhetens klimathänsyn kraf- tigt mellan olika områden. Social motivation är en stark drivkraft som kan förklara allmänhe- tens motstridiga agerande i klimatfrågan.- Positiva argument som förbättrad luft och högre livskvalitet i stä
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The Television Studies Reader brings together key writings in the expanding field of television studies, providing an overview of the discipline and addressing issues of industry, genre, audiences, production and ownership, and representation.The Reader charts the ways in which television and television studies are being redefined by new and 'alternative' ways of producing, broadcasting and watchi
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A Report prepared for The European Alliance of Listeners’ and Viewers’ Associations (EURALVA)
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This article proposes a new panel unit root test based on the generalized method of moments approach for panels with a possibly small number of time periods, T, and a large number of cross-sectional units, N. In the model that we consider the deterministic trend function is essentially unrestricted and the errors obey a multifactor structure that allows for rich forms of unobserved heterogeneity.
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Hjalmarsson (2010) considers an OLS-based estimator of predictive panel regressions that is argued to be mixed normal under very general conditions. In a recent paper, Westerlund et al. (2016) show that while consistent, the estimator is generally not mixed normal, which invalidates standard normal and chi-squared inference. The purpose of the present paper is to study the consequences of this the
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The difficulty of predicting returns has recently motivated researchers to start looking for tests that are either more powerful or robust to more features of the data. Unfortunately, the way that these tests work typically involves trading robustness for power or vice versa. The current paper takes this as its starting point to develop a new panel-based approach to predictability that is both rob