共查询到20条相似文献,搜索用时 764 毫秒
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随着新闻传播事业的发展,新闻传播的社会作用也越来也明显。它在计量检定工作中的运用表现在三个方面:一是利用新闻传播的多种效应,可以增强人们自我维护计量检定工作意识;二是加大宣传力度,更好的服务于执法工作,从而促进计量检定工作的开展;三是运用新闻传播的广泛性,加大宣传,构建和谐计量检定工作环境。 相似文献
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随着新闻传播事业的发展,新闻传播的社会作用也越来也明显。它在计量检定工作中的运用表现在三个方面:一是利用新闻传播的多种效应,可以增强人们自我维护计量检定工作意识;二是加大宣传力度,更好的服务于执法工作,从而促进计量检定工作的开展;三是运用新闻传播的广泛性,加大宣传,构建和谐计量检定工作环境。 相似文献
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本文在阐述医用计量器具维修的概念、故障分类的基础上,通过对分光光度计、半自动生化分析仪的维修实例对医用计量器具在检定工作中的维修问题进行了分析。 相似文献
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本文在阐述医用计量器具维修的概念、故障分类的基础上,通过对分光光度计、半自动生化分析仪的维修实例对医用计量器具在检定工作中的维修问题进行了分析。 相似文献
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Potential conflicts exist between biodiversity conservation and climate-change mitigation as trade-offs in multiple-use land management. This study aims to evaluate public preferences for biodiversity conservation and climate-change mitigation policy considering respondents’ uncertainty on their choice. We conducted a choice experiment using land-use scenarios in the rural Kushiro watershed in northern Japan. The results showed that the public strongly wish to avoid the extinction of endangered species in preference to climate-change mitigation in the form of carbon sequestration by increasing the area of managed forest. Knowledge of the site and the respondents’ awareness of the personal benefits associated with supporting and regulating services had a positive effect on their preference for conservation plans. Thus, decision-makers should be careful about how they provide ecological information for informed choices concerning ecosystem services tradeoffs. Suggesting targets with explicit indicators will affect public preferences, as well as the willingness of the public to pay for such measures. Furthermore, the elicited-choice probabilities approach is useful for revealing the distribution of relative preferences for incomplete scenarios, thus verifying the effectiveness of indicators introduced in the experiment. 相似文献
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靳锋敏 《中国国土资源经济》2003,16(11):42-44
本文从哲学的角度阐述了客观事物不确定性决定了会计信息的不确定性 ,并从会计信息不确定性观点出发对影响会计信息质量关键点进行了研究 ,探讨了会计信息从生产、传播到消费三个阶段失真的原因 ,提出了进行综合治理的六条对策。 相似文献
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探讨油脂定性试验——菜籽油中棉籽油检出测量不确定度的评定。用已知棉籽油含量的菜籽油进行检测分析测量过程的不确定度分量,合成相对不确定度(Uc)=18.21%。选择与被测样色泽接近的油脂加标对照,可以有效提高测定准确性。 相似文献
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Alexander E. Saak & David A. Hennessy 《American journal of agricultural economics》2002,84(2):308-319
There exists much uncertainty about consumer attitudes toward genetically modified foods. If it happens that sufficient (insufficient) acres are planted under nonmodified seed to meet postharvest demand, then a price premium will not (will) emerge for the nonmodified varieties. A nonlinearity originates in the fact that a price premium may not be supported. This nonlinearity interacts with demand uncertainty to determine equilibrium plantings and the probability that postharvest varietal prices differ. Also, as planting approaches signals will be broadcast about the nature of postharvest demand. We show how the nonlinearity affects the types of signals that growers will prefer to receive. 相似文献
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新西兰食品安全立法包括议会基本法、总督或食品安全部长发布的次级立法以及三级立法。食品标准属于部长发布的次级立法。《1981年食品法》和《1999年动物产品法》规定了基于HACCP原则的食品安全计划、风险管理计划、管控方案等多项法律制度和措施。必须按照初级产业部制定的管控方案从事双壳贝类养殖和渔船上的水产品有限加工,并应遵守最小化污染物和变质原则,以及接受第三方的外部核查制度。建议以HACCP理论为指导,完善我国水产品安全立法,重构食品标准体系,扶持水产品认证机构发展,提高国际竞争力,依法建立透明的水产品质量可追溯体系。 相似文献
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研究目的:研究市场不确定性对房地产项目开发时机的影响,检验实物期权的关键假说,为破解土地闲置问题提供政策理论依据。研究方法:计量经济模型。研究结果:(1)市场不确定性每提高1个单位的标准差将使得房地产项目的开工量降低11.54%;(2)M2同比增速提高1个单位标准差,项目的开工量将增加7.20%;3个月央票利率提高1个单位的标准差,项目开工量将下降10.65%。研究结论:(1)市场不确定性的提高会显著延迟项目开发时机,验证了实物期权的关键假说,表明破解土地闲置问题,重在降低房价波动幅度。(2)政策因素对开发商投资决策有重要影响,间接地反映了货币政策对闲置土地调控的有效性。 相似文献
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花生是中国科学院红壤生态实验站所在地域附近农业的特产和经济收入的命脉;中国科学院三峡工程秭归生态实验站地域的脐橙,是库区农业的特产和经济收入的命脉,也是库区高山峡谷绿化造林防治水土流失的好办法。气候因子对花生—脐橙两大经济作物的负面影响极大;根据两大经济圈的现实气象资料和实地观察,探索了生态网络气象数据的处理。 相似文献
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Simone Cerroni 《Agricultural Economics》2020,51(5):707-724
Subjective probabilities as well as risk and uncertainty preferences influence many farmers’ decisions. Few contextualized field experiments were recently conducted to elicit farmers’ risk preferences. Contextualized field experiments use nonabstract framings that are familiar to subjects. Despite adding of context can undermine internal validity, such experiments are increasingly used in applied economics. Contextualized field experiments were never used to elicit farmers’ uncertainty preferences. This paper aims to fill this gap in the literature. This required the development of a new approach in which uncertainty preferences were estimated while controlling for farmers’ subjective probabilities regarding future agricultural outcomes. The experiment involves Scottish farmers’ decisions to plant traditional or new potato varieties. Monetary incentives and incentive compatible elicitation techniques, such as quadratic scoring rules and certainty equivalent multiple price lists, were used. Results from the estimation of Fechner models using maximum likelihood estimation procedures show that failure to control for subjective probabilities generates an underestimation of estimated uncertainty preferences. Farmers are more averse to uncertainty than risk, and their choices are noisier under uncertainty than risk. 相似文献