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81.
The study describes an evaluation of a 48‐week physical activity and nutritional education programme for overweight/obese school‐age children using quantitative and qualitative methods. The majority of participants were obese or severely obese when enrolled, and while some improvements in body mass index, self‐esteem and engagement in a range of physical activities were noted, difficulties in evaluating a complex community‐based intervention were highlighted. Children, parents and health professionals described a range of benefits from attending the programme but more intensive services are likely to be needed for the most seriously obese children and for those families resisting intervention.  相似文献   
82.
This article describes a Delphi‐based expert judgment study aimed at the selection of indicators to identify the occurrence of emerging mycotoxin hazards related to Fusarium spp. in wheat supply chains. A panel of 29 experts from 12 European countries followed a holistic approach to evaluate the most important indicators for different chain stages (growth, transport and storage, and processing) and their relative importance. After three e‐mailing rounds, the experts reached consensus on the most important indicators for each of the three stages: wheat growth, transport and storage, and processing. For wheat growth, these indicators include: relative humidity/rainfall, crop rotation, temperature, tillage practice, water activity of the kernels, and crop variety/cultivar. For the transport and storage stage, they include water activity in the kernels, relative humidity, ventilation, temperature, storage capacity, and logistics. For wheat processing, indicators include quality data, fraction of the cereal used, water activity in the kernels, quality management and traceability systems, and carryover of contamination. The indicators selected in this study can be used in an identification system for the occurrence of emerging mycotoxin hazards in wheat supply chains. Such a system can be used by risk managers within governmental (related) organizations and/or the food and feed industry in order to react proactively to the occurrence of these emerging mycotoxins.  相似文献   
83.
We live in a contested, crisis-prone era, indicative of ongoing processes of neoliberalization. The most recent global financial and food crises have disproportionately impacted those already marginalized in society: people of colour and the working classes. The spatial expressions of this disproportionality are especially acute, evidenced by the uneven distribution of the basic necessities of food and home. Activists in the USA are responding with forms of spatial citizenship, namely exercising their right to peaceably assemble and reclaiming public spaces. During the creation of spaces of dissent, we observe the fluid formation of a collective spatialized identity among social movement actors, contingent on political identities and ideology. We use two cases based in Florida to highlight these processes. The first case is a local iteration of the Occupy Wall Street protests, Occupy Gainesville, which has occupied the city's most central public gathering place, the Bo Diddley Community Plaza. The second case involves Food Not Bombs in the city of Orlando where attempts were made to ban the group from distributing food in public parks to the homeless and working poor. First, these cases highlight the spatiotemporal relationships between unjust economic systems and the state surveillance and policing apparatus and those resisting such systems. Second, they reveal how collective identity influences and in turn is influenced by space. Our article furthers a processual, dynamic understanding of activist mobilizations to reduce the uneven burdens of neoliberalization and argues for greater attention to the spatialities of contentious politics.  相似文献   
84.
85.
How off‐farm employment can enhance welfare in terms of food consumption and poverty alleviation is a critical question facing many developing countries. This study addressed that question by pursuing two objectives: (i) to quantify the impact of off‐farm employment on rural households’ welfare, food security and poverty; and (ii) to examine the factors that affect their decision to work off‐farm. Using panel data, we estimated a difference‐in‐difference combined with a propensity score matching model. The findings show that off‐farm employment improves income, ensures food security and contributes to poverty alleviation. The results also show that age, marital status, education, labour, financial capital, land, location, market access and losses from natural disasters are significant contributing factors to the decision to participate in off‐farm employment. The findings suggest that to improve the welfare of rural households, the Vietnamese government should proceed with policies that enhance their opportunities for participation in off‐farm employment.  相似文献   
86.
绿色食品信息、价值属性对绿色购买行为影响实证研究   总被引:4,自引:0,他引:4  
根据EKB模型、H-S模型和消费价值模型,结合绿色食品自身特征,构建了绿色信息传播、绿色产品属性、消费者购买行为3个构面的模型。通过问卷调查,分析了绿色信息传播和绿色产品属性的直接关系程度,以及绿色信息传播、绿色产品属性对消费者购买行为的影响。主要研究结论:绿色信息传播对绿色产品属性有普遍直接影响,绿色信息传播、绿色产品价值属性对消费者购买行为有直接影响。  相似文献   
87.
辽宋西夏金时期,中国境内不同经济形态的各民族,在饮食文化相互交流的过程中,明显表现出农耕民族饮食与游牧民族饮食的交融。一方面,农耕民族以谷物食品为主的主食不但在游牧民族的日常生活中占据越来越重要的地位,而且副食、果品、饮品等对游牧民族也产生了广泛的影响。另一方面,作为游牧民族主食的乳肉制品,逐渐成为农耕民族的副食品种,游牧民族副食蔬果类的某些品种、饮食器具,尤其是合餐制的饮食方式对农耕民族也产生了不同程度的影响。同时,相同经济形态的民族,其饮食文化也往往各具特色,并在民族和地区间相互交流。饮食文化在日常生活中的族际交流,不但推动了各民族生活方式的发展和社会经济的进步,而且有力地促进了各民族相互认同意识的发展。  相似文献   
88.
通过调查数据对粮食主产区农村劳动力转移对粮食生产影响进行实证分析。结果袁明。目前农村劳动力转移的规模和速度,从短期看不会对农业及粮食生产产生不利影响,影响农户从事农业及粮食生产主要因素有农产品价格、政府补贴、农业生产成本和病虫害。最后提出稳定粮食主产区粮食生产的政策建议。  相似文献   
89.
宋代食品价格与餐费考察   总被引:1,自引:0,他引:1  
宋代城市的肉类价格比较贵.大观年间,牛肉每斤100文;绍兴末,平江府羊肉每斤900文,连薪俸低的小官员也吃不起.宋徽宗时的冬季,开封市场上从黄河等外地运来的鱼,每斤不上100文.宋徽宗时,开封市场上的笼饼每枚7文,一份小吃价格一般在10-20文之间.熙宁年间,一位民夫吃顿带酒水的饭一般在10文左右.端平年间的临安城,饭店内酒菜的价格比较贵,最少也要100文,多者5贯.南宋官员互相之间的宴请,一次花费数千贯,盖公款消费矣.而高官的一场豪华宴席,一般会上万贯.宋代的中央及州县学校,学生伙食费由官府支拨.宋徽宗时,太学外舍生每天为41.3文,内舍生为43.3文.北宋中期,军官伙食费平均每天100文.  相似文献   
90.
现阶段我国粮食安全的各项指标分析   总被引:1,自引:0,他引:1  
粮食安全概念的内涵和评价指标是不断变化的。目前,世界银行及各国学者提出的关于国家粮食安全状况的衡量指标比较一致,主要包括五个指标。本文主要运用该指标分析目前我国的粮食安全形势,并综合考虑我国各种投入、粮食流通、农民收入等因素,对我国的粮食安全形势进行基本判断,提出相应的对策和建议。  相似文献   
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