Spanish Demand for Food Away from Home: Analysis of Panel Data

We analyse the Spanish demand for food away from home (FAFH). A panel dataset is built and appropriate techniques for estimating limited dependent variable models are applied. Results indicate that where there are zero expenditures, these are largely due to infrequency of purchase rather than to abstention, or for economic reasons. Furthermore, important differences appear among households. Households whose head is a highly educated person, male, young and living on a salary in a large town is more likely to purchase FAFH. FAFH expenditure responses to an increase in total per capita expenditure are markedly different depending on the age of the household's head, their employment status and also the size of the resident's town. The lowest elasticity is shown by single‐person households, between 36 and 55 years old, employed and living in large towns, for whom FAFH has become a necessity. On the other hand, FAFH remains a luxury for unemployed couples with one or two children.     

财政支出对居民消费的实证分析

自20世纪90年代中后期以来,我国居民消费率一直低于世界平均水平并且徘徊在百分之三十几的低位。因此,财政支出对居民消费影响的研究,不仅是一个重要的理论问题,更是一个关系到经济平稳增长,提高人民生活水平的现实问题。从20世纪70年代至今,经济学家对财政支出和居民消费的关系进行了大量的理论与实证研究。文章将采用2007-2011年的省级面板数据,应用实证方法分析财政支出对居民消费的影响,研究结果表明：近年来财政支出对居民消费主要是挤入效应。     

EU Requirements for Food Safety and Quality Systems in Turkey: Determinants of Perceptions

Abstract

The European Union (EU) is one of Turkey’s most important trade partners. A large number of Turkish agri-food processors, however, are still unable to produce in accordance with the EU specifications. Furthermore, it is uncertain how Turkish food producers perceive the EU regulations. Based on a questionnaire survey of 99 Turkish agri-food enterprises from various industry subsectors and a conceptual framework including knowledge, personal and economic perspectives, this article assesses perceptions of the EU requirements regarding food safety and quality systems in the Turkish agri-food industry. The results indicate that those perceptions vary widely among the processors depending on education level, firm size, and legal form of ownership. Moreover, subjective information related to the perceptions regarding advantages, requirements, and costs of food safety and quality practices significantly contributes to the perceptions examined. The findings have manifold implications which should be taken into account when adapting Turkish legislation to reflect EU regulations.     

北京城市家庭水产品在外消费的影响因素分析

本文使用记帐式调查数据,采用Double—hurdle模型分析了北京城市居民家庭水产品在外消费及其影响因素。计量分析结果发现,收入与时间机会成本会显著增加城市居民家庭水产品在外消费的参与概率与消费数量。此外,家庭在外水产品消费的参与和消费决策还受到家庭人口结构与区域分布的显著影响。本文的研究结果对促进我国餐饮业与水产业的健康发展和相关政策的制定有重要意义。     

贸易自由化对中国食物消费不平等的影响与路径研究——基于多元多重中介效应模型的检验

随着经济发展,人们生活水平不断提高,中国人均食物消费量不断提高,但食物消费不平等问题依然比较突出.本文基于贸易自由化的角度,引入价格和收入两个中介变量,利用中国家庭收入项目调查数据及其他相关数据,通过多元多重中介效应模型,从理论和实证上分析了贸易自由化对中国食物消费不平等的影响.研究发现,贸易自由化不仅可通过提高中国居...     

从食物消费需求角度谈中国土地利用战略

研究目的:从食物消费需求角度,研究中国土地利用战略,为保障中国食物安全和加强土地资源有效管理提供科学依据。研究方法:文献分析法,归纳总结法。研究结果:随着人均收入的增加,城乡居民对粮食的消费需求呈减少趋势,而对动物性食物消费尤其是家禽和水产品消费将会显著增加。中国城乡居民食物消费结构及水平地域差异明显。中国饲料用粮和工业用粮持续增长,占粮食总消费量的比重不断提高。粮食非主产区应转变主销区的观念,承担相应的粮食生产任务。中国粮食生产的重心已由南方向北方、东部向中部推移,应该加强对北方及中部新增长中心的潜力挖掘。研究结论:树立大食物观念,着眼于各类土地资源;因地制宜调整农用地结构,加强耕地质量保护;转变传统粮食供给观念,提高非主产区食物供给能力;加强粮食主产区建设,进一步提升粮食主产区粮食生产能力。     

荧光碳量子点探针应用于食品中Mn(Ⅶ)的高灵敏度检测

本文首次建立了一种基于硫、氯和氮共掺杂的碳量子点(S,Cl,N-CQDs)的新型荧光探针,并将其用于高锰酸根离子Mn(Ⅶ)的高效测定。其检测原理是基于Mn(Ⅶ)对S,Cl,N-CQDs荧光的猝灭效应。在最佳工作条件下,基于S,Cl,N-CQDs的荧光探针对Mn(Ⅶ)检测具有高灵敏度,在0.1~110μmol·L-1浓度范围具有良好的线性范围,检测限低至13.1 nmol·L-1。所建立的荧光方法具有简单、分析速度快和成本低的优点。