Curvature conditions for complex-valued harmonic morphisms

We study the curvature of a manifold on which there can be defined a complex-valued submersive harmonic morphism with either, totally geodesic fibers or that is holomorphic with respect to a complex structure which is compatible with the second fundamental form. We also give a necessary curvature condition for the existence of complex-valued harmonic morphisms with totally geodesic fibers on Einstein manifolds.Comment: 9 pages, new title and abstract, new Section 5 with new result

Harmonic morphisms from homogeneous Hadamard manifolds

We present a new method for manufacturing complex-valued harmonic morphisms from a wide class of Riemannian Lie groups. This yields new solutions from an important family of homogeneous Hadamard manifolds. We also give a new method for constructing left-invariant foliations on a large class of Lie groups producing harmonic morphism

Does Easily Accessible Nutritional Labelling Increase Consumption of Healthy Meals away from Home? - A Field Experiment Measuring the Impact of a Point-of-Purchase Healthy Symbol on Lunch Sales

This paper analyses the effect on meal consumption away from home of a point-of-purchase healthy symbol. We base the analysis on a field experiment in a lunch restaurant. Our results suggest that meal consumption does not increase if the meal is labeled with a healthy symbol. Also, the mean nutritional content of meals consumed seems unaffected by the introduction of a healthy labeled meal on the menu. Even if easily accessible and understood, menu labeling therefore seems inefficient in promoting healthier meal choices. Factors influencing meal consumption are meal ingredients and the order of the meal on the menu.consumer economics; food labelling; experiment; health

Modelling Consumer Demand and Household Labour Supply: Welfare Effects of Increasing Carbon Taxes

The main objective of this paper is to analyse consumer response and welfare effects due to changes in energy or environmental policy. To achieve this objective we formulate and estimate an econometric model for non-durable consumer demand in Sweden that utilises micro- and macro-data. In the demand model male and female labour supply is included as conditioning goods. To account for possible changes in labour supply due to increasing carbon taxes we estimate separate labour supply functions for men and women. In the simulations we consider two revenue neutral scenarios that both imply a doubling of the CO2 tax; one that returns the revenues in the form of a lower VAT and one that subsidise public transport. One conclusion from the simulations is that the CO2 tax has regional distribution effects, in the sense that household living in sparsely populated areas carry a larger share of the tax burden.Consumer economics; demand analysis; energy taxation; labour supply

Increase in organic consumption and dietary health – a dynamic approach.

The paper investigated whether an increase in the consumption of organic food was related to an improvement in diet composition of individual households

The cost of children:differences between the genders

In this paper we estimate the opportunity cost of children. The underlying theoretical model is represented by a household production model. In the empirical analysis, we consider three different cohorts for men and women born between 1955 and 1970. For the women in the two oldest cohorts, the opportunity cost of two children is estimated to 28-29 per cent of full income, which in monetary terms is close to the estimated income difference between women employed in the public and private sector. The opportunity cost of fatherhood is generally positive, but only significantly positive for men born between 1960 and 1965

Willingness to pay for wholesome canteen takeaway

The primary objective of this study was to estimate the willingness to pay (WTP) for a new intervention at the workplace: wholesome canteen takeaways (CTA), i.e. a low fat meal with a large amount of vegetables prepared at the workplace canteen that only requires re-heating. The contingent valuation method was used to elicit the WTP. Two surveys were carried out in Denmark; one large-scale Internet based survey and one survey at a workplace that introduced CTA. The results from the large-scale survey suggest that this concept attracts relevant target groups; groups of individuals with a less healthy diet, low physical activity and a high body mass index. For males and individuals with low education, who also constitute relevant target groups, the results suggest no significant difference in WTP between males and females, whereas low educated individuals have a significantly lower WTP than highly educated individuals. However, the workplace study, carried out at a hospital, found that females have a significantly higher WTP for CTA compared with males. In conclusion, the concept appears to attract relevant target groups, although for a given price a smaller fraction of low educated individuals compared to high educated individuals would be willing to buy CTA

A Note on the Impact on Sales from Introducing Healthy Labeled Meals on the Lunch Menu

Menu labeling of prepared meals away from home is a policy designed to help consumers make healthier food choices. In this paper, we use a field experiment to analyze if a restaurant benefits from introducing a healthy labeled meal on its menu by experiencing an overall increase in sales. We cannot reject the hypothesis that sales are the same before and after the introduction of a healthy labeled meal on the menu, i.e., our data does not support the idea that restaurants increase their sales from supplying a healthy labeled meal

The Importance of Taste for Food Demand and the Experienced Taste Effect of Healthy Labels - An experiment on potato chips and bread

This paper quantitatively analyzes the importance of taste versus health in food demand, as well as the effect on consumers’ experienced taste of the non-intrinsic value of healthy labels. Our analysis is based on taste experiments and Vickrey second price auctions on potato chips and bread. Our findings imply a large positive effect on demand for potato chips from higher taste scores: when consumers’ experienced taste from potato chips improves by one unit, the average WTP for a 150 gram bag of chips increases by 20 euro cents. The effect from taste on bread demand seems smaller, but may be sizeable for subgroups of consumers. Our evidence suggests that a better nutritional content, as indicated by a healthy label, may also positively affect food demand, but the effect is small and not statistically significant. Finally, we find that consumers’ experienced taste of a food is unaffected by the food carrying a healthy label