在炼钢生产中如何降低石墨电极消耗

石墨电极消耗率是电炉炼钢生产的一个重要技术经济指标。近年来我厂1.5t电弧炉炼钢生产中,石墨电极消耗率呈现上升趋势。针对这一问题,我们实施现场攻关,发现电极折断消耗是石墨电极消耗大的主要原因。通过对电弧炉设备大修、改善炼钢环境、规范炉前操作行为,有效地解决了炼钢生产中电极折断消耗高的问题,使石墨电极消耗率从18.7kg/t降低到8.4kg/t,且取得了良好的技术效果和经济效益。     

Turning values concrete: the role and ways of business selection in local currency schemes

Alternative consumption schemes require the selection of producers and traders according to criteria and through processes that should make alternative values concrete. The way values turn concrete is crucial for the effectiveness of such projects. This paper investigates the ways criteria and processes are defined and their real meanings and uses through the case of associative local currencies. Drawing on the framework of proximities, it analyses local currency schemes as combining proximities (geographical and non-geographical) and selection processes set up for providers wishing to join. Selection processes may be based on a charter, an approval committee and screening criteria. The objectives of the selection, its measures in principle, the way in which it is applied as well as the practical consequences are discussed. Even when charters and formal participatory schemes for selecting providers are established, proximities appear as the keystone of selection and trust.     

An Epistemological Reflection on Social and Solidarity Economy

Social and Solidarity Economy (SSE) is emerging as life affirming solutions to the global crises through the multiple ways people locally reinvent economic life on the margins of the capitalist system based on values of solidarity, reciprocity and sustainability. Although the SSE builds on a strong foundation of real practices and institutions of economic transformation as the way forward for us, this paper argues that this world of practice is in need of its theory to frame discourses and engage with the bigger picture with confidence as an alternative to the dominant economic paradigm. The author argues that the orthodox economics, with its ontological construct of the homo economicus, Cartesian dichotomy and logical positivist epistemology severely constrains our abilities to understand and appreciate economic alternatives based on ‘other’ rationalities. Hence, there is a need for an epistemological revolution to construct a coherent theoretical framework from the wreckages of the neoclassical economics for the SSE. This paper seeks to outline the basic structure and the key elements of the ontological and the epistemological framework for this ‘science-in-the-making’ as a step to stimulate further debate for a paradigm revolution.     

Spatial takeoff in the first industrial revolution

Using the framework of Desmet and Rossi-Hansberg (forthcoming), we present a model of spatial takeoff that is calibrated using spatially-disaggregated occupational data for England in c. 1710. The model predicts changes in the spatial distribution of agricultural and manufacturing employment which match data for c. 1817 and 1861. The model also matches a number of aggregate changes that characterise the first industrial revolution. Using counterfactual geographical distributions, we show that the initial concentration of productivity can matter for whether and when an industrial takeoff occurs. Subsidies to innovation in either sector can bring forward the date of takeoff while subsidies to the use of land by manufacturing firms can significantly delay a takeoff because it decreases spatial concentration of activity.     

Social Interaction and Beer Consumption

The aim of this article is to describe young consumers’ attitudes and conduct regarding beer consumption, analyzing the consumer as an individual (addressing internal factors) and in a collective (external factors). The research was designed in Brazil involving 52 participants, divided into 16 focus groups, and the respective data was transcribed and analyzed. The findings show three distinct types of consumers were identified. The authors termed these the Inductor, the Induced, and the Sophisticated. The article details how each type of consumer can be distinguished through different attitudes and factors. The results suggest that, rather than thinking of beer consumption as an individual item, beer consumption should be thought of as different types, involving different behavior, attitudes, and social interaction. The article demonstrates originality and value to put forward the notion that beer consumption should not be defined as an individual item. The framework offered in this article will assist future researchers to consider consumption of different types and brands of beer, based on social interaction.     

Book reviews

Abstract

This article examines the cultural field of fitness as a network of producers, consumers, products and practices that has developed around the care of the body through physical exercise. Drawing on a thematic text analysis of US exercise manuals, the paper focuses on how the commercial fitness field naturalizes associations between physical exercise and leisure, and between leisure and self‐work. In particular, the analysis examines three themes and their relevance to our broader understanding of leisure in contemporary consumer society: the management of leisure time; the use of leisure for self‐investment strategies; and the promotion of consumption as the framework for leisure and an accompanying notion of pleasure. The fitness field casts light on how leisure more generally is constructed as a sphere of obligations to make productive use of one’s time, to improve one’s body and self, and to do so through the wares of the consumer marketplace. The cultural imaginary of leisure as a time of freedom from work and responsibility is thus recast, in an age of individualization, as a time of freedom to accomplish the work of self‐production.     

后危机时代扩大居民消费的路径

后危机时代,中国扩大内需的重点在于增加消费,而增加消费的重点在于增加城乡中低收入群体的消费。为此,必须增加居民的收入尤其是城乡中低收入群体的收入,并优化其收入结构。     

When nutritional guidelines and life collide: family fruit and vegetable socialisation practices in low socioeconomic communities

Abstract

Parents play a critical role in promoting fruit and vegetable consumption, for eating patterns established early in life tend to persist into adulthood. Despite this, the factors that facilitate or inhibit parents’ capacity to socialise fruit and vegetable consumption into their children’s daily diets remain poorly defined. Thirty-eight semi-structured interviews with residents, allied healthcare professionals, community leaders, community programme leaders and a local government leader living or working in two low socioeconomic suburbs were consequently conducted to ascertain factors exogenous and endogenous to the family unit that shaped parental food socialisation practices. Budgetary and time constraints emerged as exogenous factors that constrained fruit and vegetable socialisation. Constraining effects were also found for a range of endogenous factors, including commensal experiences, children’s food fussiness and the feeding styles employed by parents. As such, while many caregivers may wish to socialise fruit and vegetable consumption into their children’s daily diets, their capacity to do so is often inhibited by factors beyond their volitional control. Failure to take heed of these factors could therefore result in the development of social marketing campaigns that are ineffective at best or give rise to unintentionally harmful outcomes at worst.     

交通运输投资宏观经济效应分析——基于乘数模型的应用

文章基于乘数理论及投资乘数模型对交通运输投资宏观经济效应进行分析,设置了边际交通消费倾向,并推导出交通最终消费需求模型;运用交通消费倾向,证明了交通运输发展对推动产业结构优化的作用和缩小地区差距的功能。     

我国居民消费增长的未来趋势与现实抑制

经济增速维持高位、就业形势趋好、收入分配格局改善等利好因素支撑着我国居民消费的长期增长趋势。但是,消费率偏低仍然是困扰我国经济发展方式转变的主要困难。收入分配差距大、公共服务不健全、消费环境不佳、通货膨胀、外部不确定性等矛盾同时制约着消费增长。必须长期制度创新与短期政策优化相结合,力促居民消费增长。