共查询到20条相似文献,搜索用时 156 毫秒
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随着我国快递业务的迅速发展,快递包装垃圾回收成为我国再生资源领域最具成长性的行业。快递包装垃圾回收目前主要有3种方式,即由快递包装垃圾回收公司回收的方式、逆向物流方式和由社会公众回收的方式。从经济学角度分析逆向物流方式,可知逆向物流方式最具潜力,是今后我国快递包装垃圾回收的主要方式,但是目前,该方式的垃圾回收率较低,很难实现正收益。因此,提出以下建议:快递包装垃圾回收以逆向物流方式为主,其他两种方式为辅,即农村地区采用由社会公众回收的方式,经济发达的一线城市采用由快递包装垃圾回收公司回收的方式;同时,政府部门也要从政策、资金和宣传方面推动垃圾回收业务的发展。 相似文献
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政府管理下网络众包的快递包装回收模式创新 总被引:1,自引:1,他引:0
目的 创新政府管理下网络众包的快递包装回收模式。方法 通过文献研究、案例分析、实地调查、统计分析、模型构建等研究方法,对快递包装存在的资源严重浪费、环境污染等社会问题及包装回收现状进行深入研究,并创新网络众包理念,探索政府管理下网络众包的快递包装回收的新模式。结果 构建了数字化快递包装智慧管理系统,提高了快递包装回收率,解决了快递包装造成的严重社会问题。结论 构建了政府管理下网络众包的快递包装回收模式,实现了快递包装回收的众包结构与关系创新、包装循环创新、回收众包平台的功能和管理创新。 相似文献
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快递行业蓬勃发展,但快递包装物的浪费和污染却日益严重。本文基于循环经济的视角分析快递包装回收问题。本文首先论述了循环经济的内涵,分析了快递包装回收存在的问题,并在此基础上提出了循环经济视角下快递包装回收的对策。 相似文献
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《软包装商情》2020,(6)
快递业的发展带来了快递包装垃圾回收问题。为此,笔者采用二元logistic回归模型对472份消费者快递包装分类回收的各方面情况进行分析,试图对影响消费者参与意愿、实际行为的因素进行分析,探讨快递包装分类回收推广的条件和机制。结果显示:消费者进行快递包装分类回收意愿强烈,但实际行为却很少,两者之间存在较大差异;快递包装分类回收的意愿主要受认知和态度影响,年龄和某些职业也是影响因素;快递包装分类回收的行为是否能够实现,主要取决于对快递包装分类回收知识的认知;此外,消费者对于"循环绿色"快递包装有非常高的期待值。因此,完善快递包装分类回收设施和服务制度;通过宣传加强消费者快递包装分类回收知识普及和责任感的培养;尽快制定快递包装回收标准;采取奖惩并用、激励与监督并行的举措推动分类回收实践推广;建立可循环、可回收的共享快递服务系统等措施是实现快递包装"绿色化"的根本途径。 相似文献
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A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling. 相似文献
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An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a
rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate
agreement is demonstrated between the derived relations and experimental data. 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue. 相似文献
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水三相点是开尔文热力学温度的唯一基准点,也是ITS-90国际温标重要的定义固定点。因此,水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来,中国计量科学研究院研制出一系列高质量的水三相点容器,加强了水三相点的研究,为不确定度的分析提供了更为可靠的实验依据。同时,不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此,根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明,其扩展不确定度为0.16mK(k=2.69,P=0.99)。 相似文献
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Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995. 相似文献