物联网技术在农产品物流中的应用探讨

物联网技术是近几年国家科技发展的重点,其在各个领域的应用是未来科技发展的大趋势。文章简要介绍了物联网技术的概念及发展过程,结合物联网技术对现代农产品物流的影响,通过对我国农业物流中存在的农产品物流技术设备落后,信息流通缓慢等问题的分析,探讨在新型农业贸易中运用物联网技术的发展前景,为在物联网时代更好地发展现代农业贸易提出建议。     

Nonparametric search

We analyze the search problem of a consumer who derives information only from the sequential search process. This paper considers the case of a consumer who uses a nonparametric procedure to estimate the probability distribution. It is shown that a solution to the consumer's problem is a very simple strategy which depends only on the order statistics, on the discounting factor, and on the duration of the search. It leads to a finite search almost surely. This optimal strategy is a myopic rule which is computable and which is characterized by a sequence of strictly increasing reservation prices.     

Are financial spreads useful indicators of future inflation and output growth in EU countries?

This paper seeks to address the policy issue of the usefulness of financial spreads as indicators of future inflation and output growth in the countries of the European Union, placing a particular focus on out-of-sample forecasting performance. Such analysis is of considerable relevance to monetary authorities, given the breakdown of the money/income relation in a number of countries and following increased emphasis of domestic monetary policy on control of inflation following the broadening of the ERM bands. The results confirm that for some countries, financial spread variables do contain some information about future output growth and inflation, with the yield curve and the reverse yield gap performing best. However, the relatively poor out-of-sample forecasting performance and/or parameter instability suggests that the need for caution in using spread variables for forecasting in EU countries. Only a small number of spreads contain information, and improve forecasting in a manner which is stable over time. © 1997 John Wiley & Sons, Ltd.     

天然气输送离心式压缩机组故障诊断方法研究

文章介绍了天然气输送离心式压缩机组的常见故障,分析了故障原因及特征,进而对其故障诊断技术现状进行了总结和比较,在此基础上针对输气动力设备故障的复杂性提出了应用数据挖掘技术对离心式压缩机组进行故障诊断的初步设想。     

我国农产品物流现状及对策分析

众所周知,目前我国的农业和农村经济都进入了一个全新的发展阶段,随着国民经济的高速发展,正式加入世界贸易组织、建立与周边国家和地区的自由贸易区以及深化改革粮棉等重要农产品的流通体制等等各种举措都使得我国农产品的市场化程度与贸易自由化程度得以快速的提高,自然而然,这也对现代农产品的物流提出了更高的要求。但由于受种种主客观因素的影响,现今我国的农产品物流还远远不能满足农业和农村经济快速发展的需要,因此,如何加快发展我国现代农产品物流成为了一个新的社会热点。     

打破课程界限,以项目为主线开展模具专业课教学

模具专业在各个工科高职院校开设较为普遍,是典型的一个以某门技术为核心的技能专业。传统的教学方式存在繁、散等缺点,通过项目教学法的改革,以"工学结合"模式开展教学,收到了较好的效果。