全球军品出口贸易市场结构及特征

军品出口贸易市场有别于一般的国际贸易市场,在主体结构、市场特征、产品结构及竞争走势等方面有其独特性。近年来,在国际形势深刻演变的大背景下,传统大国继续加快军品出口贸易全球布局速度,新兴国家更加重视军品出口贸易的战略地位,全球军品出口贸易市场结构发生微妙变化,呈现出一系列新特征。

中国农产品贸易特征事实描述及分析

中国是农产品贸易进出口大国。近年来,中国农产品进出口规模呈现快速增长到稳定发展态势,贸易逆差压力较大;农产品贸易进口依存度高于出口依存度;农产品贸易市场结构有所调整,市场集中度下降,与"一带一路"沿线国家的农产品贸易增长明显;部分进口农产品增长过快,对国内农产品造成了较大的冲击,未来应适度减少竞争性农产品进口,同时加大优势农产品出口,积极应对农产品出口贸易壁垒,促进农产品进出口商品结构健康发展。

中国主要食用油进出口实证分析

由于耕地资源稀缺,机械化生产水平较低,科技研发落后和因政府投入不够导致的种植成本较高,中国的油料作物在产量、单产和出油率上与发达国家相比存在比较劣势.这使得中国每年需大量进口来自巴西、阿根廷、美国、加拿大等国的油籽和食用油.中国食用油的进口量远远大于出口量,进出口状况呈现出极不平衡的趋势.通过对食用油进出口数量、进出口金额、主要几种食用油进出口数量、贸易市场结构及贸易竞争力的分析,得到中国在食用油进出口方面存在的问题并给予一定政策性的建议.

对外贸易发展质量省际比较与提升路径选择——基于福建与广东、江苏、浙江比较

通过构建对外贸易发展质量指标体系,从贸易规模、贸易主体、贸易市场结构、贸易商品结构、贸易优势、贸易方式等多指标维度,应用熵权TOPSIS评价模型,与广东、江苏、浙江等外贸强省相比,福建对外贸易发展质量仍有较大差距。福建外贸高质量发展的路径选择与政策保障措施是:一是促进对外贸易"优进优先"发展;二是提升外贸经营主体国际竞争力;三是着力提升外贸出口产品质量和品牌影响力;四是创新加工贸易发展方式;五是积极培育对外贸易发展新动能。

Analysis of Trading Volume Behavior Under Continuous Double Auction Mechanism in Limit Order Markets

In this paper, we develop a theoretical model to describe the dynamics of the trading volume under continuous double auction mechanism in limit order markets. We examine the formation process and statistical properties （including the mean, wriance, and realized value） of the buy side cumulative trading volume, sell side cumulative trading volume and total cumulative volume under continuous double auction mechanism by means of mathematical modeling based on Poisson process of order flows, and do some corresponding numerical simulations and comparative statics on the factors that would influence these three volumes aforementioned. The results indicate that these three volumes are all influenced by the factors including the arrival rate of orders, demands of each order, proportional structure between buy and sell orders, executed probability and time interval we examined. And our established theoretical model can well capture the dynamics of these three volumes under continuous double auction mechanism in limit order markets when all these factors interact.