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Now showing items 401-420 of 1452
  • Miettinen, Topi; Ropponen, Olli; Sääskilahti, Pekka (Helsinki Center of Economic Research, 2011)
    HECER Discussion Paper No 326
  • Kalliovirta, Leena; Meitz, Mika; Saikkonen, Pentti (HECER – Helsinki Center of Economic Research, 2014)
    HECER Discussion Paper No. 386
    This paper proposes a new nonlinear vector autoregressive (VAR) model referred to as the Gaussian mixture vector autoregressive (GMVAR) model. The GMVAR model belongs to the family of mixture vector autoregressive models and is designed for analyzing time series that exhibit regime-switching behavior. The main difference between the GMVAR model and previous mixture VAR models lies in the definition of the mixing weights that govern the regime probabilities. In the GMVAR model the mixing weights depend on past values of the series in a specific way that has very advantageous properties from both theoretical and practical point of view. A practical advantage is that there is a wide diversity of ways in which a researcher can associate different regimes with specific economically meaningful characteristics of the phenomenon modeled. A theoretical advantage is that stationarity and ergodicity of the underlying stochastic process are straightforward to establish and, contrary to most other nonlinear autoregressive models, explicit expressions of low order stationary marginal distributions are known. These theoretical properties are used to develop an asymptotic theory of maximum likelihood estimation for the GMVAR model whose practical usefulness is illustrated in a bivariate setting by examining the relationship between the EUR-USD exchange rate and a related interest rate data.
  • Breen, Michael; Gillanders, Robert; McNulty, Gemma; Suzuki, Akisato (HECER - Helsinki Center of Economic Research, 2015)
    HECER Discussion Paper No. 391
    Are women less corrupt in business? We revisit this question using firm-level data from the World Bank’s Enterprise Surveys, which measure firms’ experience of corruption and the gender of their owners and top managers. We find that women in positions of influence are associated with less corruption: female-owned businesses pay less in bribes and corruption is seen as less of an obstacle in companies where women are represented in top management. By providing evidence that women are, ethically at least, good for business our research contributes to the literature on development, gender equality, and corruption more generally.
  • Capp, Bernard (Tutkijakollegium, 2007)
    COLLeGIUM: Studies Across Disciplines in the Humanities and Social Sciences, Volume 2: The Trouble with Ribs: Women, Men and Gender in Early Modern Europe
  • Hyytinen, Ari; Ilmakunnas, Pekka (Helsinki Center of Economic Research, 2004)
    Discussion Paper No 33
  • Johansson, Tino (Department of Geography, 2006)
    Helsingin yliopiston maantieteen laitoksen julkaisuja A 141
  • Kivistö, Sari (Tutkijakollegium, 2007)
    COLLeGIUM: Studies Across Disciplines in the Humanities and Social Sciences, Volume 2: The Trouble with Ribs: Women, Men and Gender in Early Modern Europe
  • Collins, John (Tutkijakollegium, 2009)
    COLLeGIUM: Studies Across Disciplines in the Humanities and Social Sciences, Volume 6: World Music: Roots and Routes
  • Palokangas, Tapio (University of Helsinki, 2010)
    Discussion Paper No 643
  • Palokangas, Tapio (Helsinki Center of Economic Research, 2011)
    HECER Discussion Paper 340
  • Alleyne, Mike (Tutkijakollegium, 2009)
    COLLeGIUM: Studies Across Disciplines in the Humanities and Social Sciences, Volume 6: World Music: Roots and Routes
  • Lanne, Markku; Saikkonen, Pentti (Helsinki Center of Economic Research, 2009)
    Discussion Paper No 274
  • Lof, Matthijs (Helsinki Center of Economic Research, 2011)
    HECER, Discussion Paper, 343
  • Kajava, Mika (Helsinki Collegium for Advanced Studies, 2016)
    The article addresses some aspects of the Roman Imperial cult in Asia Minor by discussing a number of round altars from Aigeai in Cilicia. The dedicatory inscriptions of these monuments, some of which are unpublished (D10, E14), testify to various local methodologies of honouring the Roman emperors and their family members jointly with local deities. As they do not mention specific dedicators, the altars must have been set up on public initiative.
  • Rantala, Jussi (Helsinki Collegium for Advanced Studies, 2016)
    This article deals with the question of the role of gods involved with cultivation, grain and food supply in the Roman imperial iconography during the reign of Septimius Severus. By evaluating numismatic and written evidence, as well as inscriptions, the article discusses which gods related to grain and cultivation received most attention from Septimius Severus, and how their use helped the emperor to stabilize his rule. It appears that the three main deities used by Severus were Annona, Ceres and Tellus. The use of Annona and Ceres was concentrated in the first years of Severan rule, when the emperor was out of the capital and fighting wars. Apparently, the importance of Annona, the goddess symbolizing imperial food supply, was connected with the acts of the emperor: wars and other crisis were periods when food supplies to the capital were often under threat. When Severus returned to Rome for a somewhat longer period, more emphasis was put on Tellus, traditional goddess of agriculture and a deity connected with a Golden Age – as the emperor was now in the capital, this meant an age of peace and plenty for his subjects. As a result, it could be argued that the use of fertility gods was closely related to the acts of Severus himself – thus legitimizing his image as a protector of his subjects.
  • Koskela, Erkki; Viren, Matti (University of Helsinki, 2003)
    Discussion Paper No 569
  • Ilmakunnas, Pekka; Ilmakunnas, Seija (Helsinki Center of Economic Research, 2006)
    Discussion Paper No 121
  • Cattaneo, Andrea; Lankoski, Jussi; Ollikainen, Markku (Helsingin yliopisto, taloustieteen laitos, 2007)
    Discussion Papers
    This paper examines how jointness of environmental benefits and environmental heterogeneity affect the potential benefits of green auctions over flat-rate agri-environmental policies. A sealed bid green auction with two environmental objectives, nutrient runoff reduction and biodiversity provision, is analyzed. The green auction is analyzed analytically and then empirically by using Finnish data. Auctions that screen farmers’ applications according to an environmental index (with and without a cost-saving component) are simulated in the context of two different conservation options. The first option assumes enlarged field edges are located in whichever edge of a parcel, providing only biodiversity benefits, whereas in the second option they are located on the waterfront so as to also reduce nitrogen runoff. Empirical results show that in both cases the green auction with the cost saving outperforms other policies. However, when environmental benefits are not jointly produced by a practice, farmer participation is much more sensitive to how objectives and cost-saving are weighted, leading to unwanted swings in participation.