冷链物流“最后一公里”快速配送方法研究

冷链物流“最后一公里”的品质配送,对于实现全程冷链以及提升企业形象有着重要的意义。为了实现冷链物流的快速配送,本文提出了一种基于复杂网络的“最后一公里”物流配送区域划分方法。该方法构建了现实生活中物流配送的复杂网络模型,然后基于两阶段的LinkRank社区发现算法实现了物流配送区域的划分,最后建立了一套完善的物流配送体系。该体系明确了配送中转站以及配送点所覆盖的区域,这些区域所包含的社区物流关系紧密、易于配送。本文通过案例研究,验证了方法的有效性,最终方案可有效提高“最后一公里”的配送效率和降低物流成本。     

关于旅游合同示范文本的法律思考

旅游合同示范文本由旅游局和工商局联合制定推广,性质上属行政指导,具有效率、安全、优先及补充等法律价值,示范文本条款分四大功能模块,由通用条款和协议条款组成。目前示范文本是多级制定,种类单一,权威性不高,文章提出完善和丰富示范文本种类和内容、统一示范文本和示范文本备案豁免等建议,以提升旅行社使用示范文本的积极性,发挥示范文本的作用。     

基于YOLOv3的H型钢表面缺陷检测系统

为了提升H型钢的表面质量和安全系数,设计了一种基于YOLOv3算法的型钢表面缺陷检测系统.设计的检测系统由硬件系统和软件系统组成:硬件系统包括八角架式图像采集装置、电动控制系统和通信系统;软件系统采用YOLOv3目标检测算法.现场测试结果表明:1)检测系统可实时采集图像,并根据H型钢的规格型号能够自动调节图像采集装置结...     

GDP growth in Russia: different capital stock series and the terms of trade

There are different academic assessments of the principal forces behind Russia’s GDP growth. Studies that reconstruct capital stocks using gross fixed capital formation and the perpetual inventory method find that total factor productivity growth has been paramount to GDP growth. On the other hand, capital services datasets that have recently been made available find that capital developments have been instrumental in driving economic growth. We reconstruct a capital stock series for Russia for 1995–2013 and compare the results to two capital services time series using the Solow growth model. We also take into account terms of trade developments that have lent strong support to Russia’s economy. The terms of trade is shown to have been an important factor behind the development of gross fixed capital formation and thus GDP growth.     

Reciprocity in Ranked Relationships: Does Social Structure Influence Social Reasoning?

Many economic and evolutionary theories have modeled cooperation as the evolutionary outcome of decisions made by autonomous, self-interested agents operating in a social vacuum. In this paper we consider the implications for cooperative interactions when prior social structures and corresponding social norms exist. In particular we investigate the influence of social rank/status on perceptions of fairness and tolerance of cheating. We review evidence from a series of experiments employing the Wason selection task (a test of conditional reasoning) and the ledger task (a decision making task) suggesting that people cued to adopt a perspective of high social rank are more tolerant of cheating and simultaneously believe that they have been more fairly treated (even when cheated) than people cued to adopt a perspective of low social rank. However, the evidence also suggests interesting cross-cultural differences in perceptions of fairness and tolerance of cheating in ranked relationships. This revised version was published online in August 2006 with corrections to the Cover Date.     

用螺纹量规检测产品产生争议时的解决方法

本文分析了检测结果合格的螺纹量规检测螺纹产品时出现的疑问,并解答这些疑问。     

双差数列的几个性质

讨论了双差数列与周期双差数列的通项公式以及求和公式。     

改革开放以来我国贸易条件的变动分析与预测

随着我国近几年来经济高速增长,产业结构的不断优化升级,在国际贸易问题上也遇到了许多新的问题。本文将以我国近年来我国制成品贸易以及我国商品贸易条件为研究对象,分析现阶段我国制成品贸易受商品贸易条件恶化和收入贸易条件变化改善的影响,同时对未来两年的商品贸易条件和收入贸易条件以及制成品的出口变动情况进行分析与预测。     

检测环境对路面弯沉检测结果的影响

路面弯沉是路面及路基结构整体强度和刚度的直观反应,是工程整体强度质量的重要检测指标。因此,了解路面湾沉的变化规律,正确测试路面弯沉值,对于正确评价路面质量有着极其重要的意义。     

烷基酚聚氧乙烯醚应用在纺织品中对环境的影响

列举了APEO在纺织品中的一些应用和检测纺织品中其含量的检测方法。阐述了应用在纺织品中的APEO对环境的影响，并提出一些应对及补救措施。