Food and life cycle energy inputs: consequences of diet and ways to increase efficiency

Food consumption is one of the most polluting everyday activities when impacts during product life cycles are considered. Greenhouse gas emissions from the food sector are substantial and need to be lowered to stabilise climate change. Here, we present an inventory of life cycle energy inputs for 150 food items available in Sweden and discuss how energy efficient meals and diets can be composed. Energy inputs in food life cycles vary from 2 to 220 MJ per kg due to a multitude of factors related to animal or vegetable origin, degree of processing, choice of processing and preparation technology and transportation distance. Daily total life cycle energy inputs for diets with a similar dietary energy consumed by one person can vary by a factor of four, from 13 to 51 MJ. Current Swedish food consumption patterns result in life cycle energy inputs ranging from 6900 to 21,000 MJ per person and year. Choice of ingredients and gender differences in food consumption patterns explain the differences. Up to a third of the total energy inputs is related to snacks, sweets and drinks, items with little nutritional value. It is possible to compose a diet compatible with goals for energy efficiency and equal global partition of energy resources. However, such a diet is far from the Swedish average and not in line with current trends.     

老年人旅游消费影响因素的实证研究——以洪山区为例

通常的研究认为,消费与收入有关,旅游消费也不例外。对洪山区老年旅游者进行问卷调查和实证分析,得到如下结论：影响老年人旅游消费的主要因素是个人旅游偏好和空余时间的安排;同时,老年人大都关注体力和健康因素,而对花费和经济因素则一般不太关注。最后,基于实证研究的结论对如何提高中国老年人旅游需求提出了增强旅游资源的宣传发展特色旅游、加大政府投入,完善基础设施,提高服务水平等建议。     

Some tests for money illusion and distribution effects in the aggregate consumption function

The hypothesis that the aggregate consumption displays money illusion in the sense that consumers mistake an increase in nominal incomes for an increase in real incomes and thus consume more out of given real incomes in response to a rise in the price level and the hypothesis that the aggregate consumption depends on the distribution of income are tested using Finnish annual and quarterly data. The money illusion hypothesis is rejected by annual data, while it meets success with quarterly data. The hypothesis of distribution effects in the aggregate consumption is supported by annual data. Particularly, equalizing the distribution of income would increase the aggregate consumption. In view of the quality of data on personal income distribution this conclusion cannot be regarded as more than tentative.     

Sexual orientation,work, and income in Canada

Abstract. We provide the first evidence on sexual orientation and economic outcomes in Canada using confidential data that ask adults a direct question about their sexual orientation. Gay men have 12% lower personal incomes and lesbians have 15% higher personal incomes than otherwise similar heterosexual men and women, respectively. Different labour force patterns can account for some of the income differentials. We also document large differences in educational attainment, childrearing, and urbanicity that generally mirror patterns found in the US. Finally, we show that applying couples‐based approaches common in this literature greatly overstates the magnitudes of gay/straight income gaps.     

INTERPRETING CHANGES IN THE ECONOMIC STATUS OF THE ELDERLY, 1949-1979

This paper analyzes changes in the economic well-being of the elderly using data from the Decennial Censuses of 1950 through 1980. We find that the economic status of each elderly cohort is higher on average than that of the preceding cohort. Certain events associated with age–retirement for both men and women and widowhood for women–are associated with declining incomes. Controlling for sex, labor force participation, and marital status, however, the economic well-being of elderly cohorts generally increases with age.     

新疆能源消费与可持续发展战略分析

本文在对新疆能源消费、总人口与经济总值的关系,能源消费弹性系数变化,能源消费构成变化,能源消耗率变化进行实证分析的基础上,讨论了新疆能源消费存在的问题;并从可持续发展的增长模式、提高能源使用效率、发展能源加工业、能源工业发展战略等方面提出了新疆能源消费可持续发展战略.     

重庆市北碚区老年旅游市场开发潜力研究

对北碚区老年旅游市场的调查表明：潜在的老年游客多,老年人的身体越来越好、收入越来越高,有极强的出游欲望;老年人出游以跟团为主,同时出游时间较长,老年旅游市场具有巨大的开发潜力．但旅游企业并没有开发出适合老年人的旅游产品,政府对老年旅游市场的关注度也不够。为此,旅游企业应加强宣传,为老年人设计专门旅游产品,提高服务质量;同时政府应加强引孚与管理,维护市场健康发展。     

Determinants of pro-environmental consumption: The role of reference groups and routine behavior

This paper investigates the determinants of pro-environmental consumption, focusing on the role of reference groups and routine behavior. We study the factors that explain whether or not people have installed residential solar energy equipment or have subscribed to green-electricity programs, and the factors that influence the intensity of buying organic food. In addition to demographic characteristics and environmental attitudes, we consider the following categories of determinants: economic and cognitive factors (income, estimated price premium, level of information on environmentally-friendly goods); consumption patterns of reference persons; own consumption patterns in the past. Using a unique data set from a survey conducted in the region of Hanover, Germany, we find the following: (1) Economic and cognitive factors are significant covariates of all three kinds of pro-environmental consumption. Their influence is greatest in the case of green electricity. (2) Consumption patterns of reference persons are significant covariates of all three kinds of pro-environmental consumption. Their influence is greatest in the case of organic food. (3) The intensity of buying organic food is greater the longer people have been consumers of these goods.     

Changing patterns of transfers in Slovenia in the last three decades: transition from a socialist economy to a market economy

Rapid population ageing increases interest in economic flows across ages and intergenerational transfers in general. This article uses the National Transfer Accounts methodology to measure consumption and production at each age, and how the difference between consumption and production is financed through (private and public) transfers and the interaction with assets, i.e. ‘asset-based reallocations’. During working ages, people earn more than they consume and with the surplus they finance the deficit of the young and old generations who consume more than they produce. Such a pattern of economic dependency is universal across countries and across time, but huge differences exist in the ages at which individuals produce more than they consume and vice versa. Moreover, the importance of private and public transfers and asset-based reallocations varies across countries and times. In the last three decades, life expectancy at birth in Slovenia increased by 9.3 years, while the age span in which production exceeds consumption narrowed rather than increased. Child dependents are predominantly financed by private transfers, whereas the elderly mainly rely on public transfers. Young and old individuals increasingly rely on public transfers. Together with rapid population ageing, this is likely to jeopardise the public finance system in the future.     

Exploring the role of gender in common-pool resource extraction: evidence from laboratory and field experiments in fisheries

There is active debate on gender issues in natural resource management. For example, it is proposed that women are more cooperative than men when dealing with natural resources decisions; however, few scientific studies have directly addressed this hypothesis. We provide evidence for a greater cooperative attitude in women compared to men in both college students and coastal fishing communities of Baja California, Mexico, by means of game theory experiments. In both laboratory and field experiments, women changed their behaviour towards lower extraction compared to men, when regulations, sanctions or social scolding were introduced in the games. These results suggest that raising the role of women in decision-making, along with an adequate institutional framework, may lead to a more sustainable use of natural resources.     

Autocorrelation,structural breaks and the predictive ability of dividend yield

Wine consumption is modelled by focusing on three decisions. The first is whether to consume any alcoholic beverages. Setting aside the teetotalers, the second decision is whether to consume wine and the third choice is how much to consume. We model these decisions using a double-hurdle approach. Our econometric results indicate that the probability a man drinks wine increases if he is under age 65, has a high income and is a high school graduate. Heavy wine consumers are over age 65, are well educated, physically active, and have high incomes.     

Population, consumption and resources: ethical issues.

This article offers several models that test concepts of optimum population and consumption: classical or utilitarian models, contractual models, and generation-relative ethical models. This article is based on a lecture presented in August 1995, at a conference organized by the Swedish Collegium for Advanced Study in the Social Sciences. It is posited that classical utilitarianism casts the optimum population and consumption problem as a Genesis Problem. The authors argue that the Genesis problem is the wrong problem to study because there are no actual people. The Genesis problem asks how many people there ought to be ideally at what living standards. The unborn are not a class of people, just as mud on a river bank is not a mud hut. Actual persons and potential persons are categorically different. Actual persons have a claim that potential persons do not have. An overall ethical ordering over alternatives can only be conceived for each generation of actual people. The ethical point of view inevitably changes over time. For example, a generation in the first period consumes what they are given to consume by the older generation. In the second period, the younger generation is now the older generation who decide how many children to have and how to share nonstorable, all purpose consumption goods among themselves and future generations. Procreation is a means of making one's values durable. Human development is unfair. Those who live later benefit from the labor of their predecessors without paying the same price. Procreation and ecological preservation are a matter of ethics.     

Convergence of consumption patterns during macroeconomic transition: A model of demand in Ireland and the OECD

This study uses country-level panel data on consumption in Ireland and seven other OECD countries to examine the evolution of Irish consumption patterns as Ireland underwent rapid macroeconomic growth. Consumption levels obviously increased due to substantially higher incomes, but it is less clear how the shares of different types of goods purchased have changed or whether Ireland's consumption mix has converged with that of other high-income countries. Rankings based on a simple distance measure of consumption similarity suggest that Ireland moved from a “low-income” pattern similar to Portugal or Greece to a “high-income” pattern like that of Canada between 1995 and 2003. Using static and dynamic Almost Ideal Demand System models, we first estimate long- and short-run Irish price and income elasticities for nine categories of commodities between 1976 and 2003. These results provide evidence of substantial habit formation in aggregate consumption. We then estimate a long-run cross-country model covering six aggregate commodity groups between 1975 and 2003. The analysis shows that Ireland's demand parameters remain more similar to those of Greece than to higher-income OECD countries in the sample. Although Ireland has overtaken most other OECD countries in per capita income, it is still converging to a higher-income consumption pattern. We foresee further convergence of Irish expenditure patterns towards a pattern typical of high-income countries.     

The impact of demographic change on energy use and greenhouse gas emissions in Germany

This paper estimates the impact of demographic change on energy use and greenhouse gas emissions in Germany. Since old people display different consumption patterns than young people, an increase in the proportion of old people affects overall consumption patterns. Micro data from a household survey are used to identify age-specific consumption patterns and to project the impact of demographic change on the structure of total consumption expenditure up to the year 2030. The resulting final demand vectors are entered into an environmental input-output model, which allows the calculation of sectoral production, energy use and greenhouse gas emissions. The model results suggest that until 2030, demographic change raises the share of methane in total greenhouse gas emissions and does not contribute to reducing energy use and greenhouse gas emissions in Germany. The model is also used to explore the effects of redistributing income between age groups and a policy-induced switch from motor vehicle use to public transport.     

Wage,income and consumption inequality in Japan, 1981–2008: From boom to lost decades

In this paper we document the main features of the distributions of wages, earnings, consumption and wealth in Japan since the early 1980s using four main data sources: the Basic Survey on Wage Structure (BSWS), the Family Income and Expenditure Survey (FIES), the National Survey of Family Income and Expenditure (NSFIE) and the Japanese Panel Survey of Consumers (JPSC). We present an empirical analysis of inequality that specifically considers the path from individual wages and earnings, to household earnings, after-tax income, and finally consumption. We find that household earnings inequality rose substantially over this period. This rise is made up of two distinct episodes: from 1981 to 1996 all incomes rose, but they rose faster at higher percentiles; from 1996 to 2008 incomes above the 50th percentile remained flat but they fell at and below the 50th percentile. Inequality in disposable income and in consumption also rose over this period but to a lesser extent, suggesting taxes and transfers as well as insurance channels available to households helped to insulate household consumption from shocks to wages. We find the same pattern in inequality trends when we look over the life cycle of households as we do over time in the economy. Additionally we find that there are notable differences in the inequality trends for wages and hours between men and women over this period.     

Sustainable food consumption among young adults in Belgium: Theory of planned behaviour and the role of confidence and values

This study investigates determinants of sustainable food consumer behaviour in Belgium. To gain a better insight in sustainable consumption, a study was conducted in which attitudes and behaviour as well as the role of individual characteristics like confidence and values related to sustainable products are analyzed. The focus of the analysis is on exploring the influence of determinants as hypothesised by the theory of planned behaviour (TPB) - attitudes, perceived behavioural control, social norms - on sustainable consumption intention in general, and specifically depending on consumer's perceived confidence and personal values. The empirical research builds on a survey with a sample of 456 young adults using a questionnaire and showing an advertisement for hypothetical sustainable dairy products. Stepwise multiple regression models showed that 50% of the variance in intention to consume sustainable dairy was explained by the combination of personal attitudes, perceived social influences, perceived consumer effectiveness and perceived availability. In addition, different levels of confidence and value orientation yield different strengths of the determinants. The findings yield public policy and marketing recommendations for stimulating sustainable food consumption among young adults.     

Economic well-being and poverty among the elderly: An analysis based on a collective consumption model

We apply the collective consumption model of Browning et al. (2010) to analyse economic well-being and poverty among the elderly. The model focuses on individual preferences, a consumption technology that captures the economies of scale of living in a couple, and a sharing rule that governs the intra-household allocation of resources. The model is applied to a time series of Dutch consumption expenditure surveys. Our empirical results indicate substantial economies of scale and a wife's share that is increasing in total expenditures. We further calculated two sets of poverty rates: one based on the collective consumption model and one based on the traditional approach with a standard equivalence scale. Poverty among widowers is underestimated by the traditional approach. The same is true for women (men) in elderly couples for the first (later) time periods in our analysis. Finally, we analysed the impact of becoming a widow(er). Based on cross-sectional evidence, we find that the drop in material well-being following the husband's death is rather substantial for women. For men, the picture is reversed.     

Opening the Farm Gate to Women? The Gender Gap in U.S. Agriculture

Abstract:

This article provides an empirical analysis of the gender gap for farming in the United States. Using the 2012 U.S. Census of Agriculture we show that farms operated by women earn forty percent less farm income than farms operated by men after controlling for farm and operator characteristics. These findings indicate that farming is one of the most unequal professions in the United States today. Further, we investigate whether three forms of sustainable agriculture improve incomes for women farmers. We find that only farms engaging in Community Supported Agriculture experience a marked decline in the gender income gap.     

The public reallocation of resources across age: a comparison of Austria and Sweden

There is a strong interdependency between public transfers and the shape of the economic lifecycle because these transfers facilitate and enable the decoupling of production and consumption over long time periods, most notably in childhood and retirement. The design of public transfers obviously influences the production and consumption and consequently also the degree of economic dependency of children and the elderly. We propose economic dependency ratios which are based on age-specific consumption and labour income or age-specific public contributions/benefits, respectively, illustrating them in a comparison of Austria and Sweden. Although these two countries are very similar economies in terms of production, income and the size of the public sector, there are remarkable differences in the design of public transfers, in their distribution over age-groups and consequently in the shape of the average economic lifecycle. Using the economic dependency ratios we show that the financial sustainability of the public transfer system depends beside the demographic developments strongly on its design: the Swedish system collects the contributions from a wider range of age groups, transfers a smaller share to the elderly and provides more support to younger generations, supporting them to invest in children of their own. These characteristics have a positive effect on the sustainability of the Swedish system: although in Sweden there is a larger share of the population in the age group 60+, the total economic dependency of elderly persons is lower.     

Old-age dependency: is it really increasing in aging populations?

To account for economic dependency we propose an adjustment to the old-age dependency ratio based on savings of the elderly. Computations are simple and the adjusted ratio is aimed at retaining the exogenous character of the conventional demographic ratio. Data from an economy with stagnating incomes and a fast growing elderly population (Japan) and an economy with fast growing incomes (Singapore) highlight that the conventional dependency ratio substantially exaggerates the burden of the elderly.