信息传递、家庭养老保险与农户农业规模经营参与决策分析——以农户农地股份合作社入股决策为例

如何激发农户参与农业规模经营的积极性,是实现其与现代化农业有机衔接的关键之一。本文以农地股份合作社为例,基于728户非社员农户样本,着重分析了信息传递、家庭养老保险对非社员农户入股决策的调节作用及其相互作用。研究发现,家庭养老保险参与、政策信息、社员评价信息传递对非社员农户入股决策均表现出显著的正向调节作用。其中,社员评价信息传递边际效应最高,对非社员农户的调节作用随传递信息内容等级的提高而提高。此外,信息传递对非农社员入股决策影响的边际调节效应递减。家庭养老保险对非农户社员入股决策的正向调节作用需要一定的信息传递为基础。因此,本文提出如下建议:可针对特定农业规模经营方式,在发展的不同阶段采取不同的信息传递方式;健全运行机制和监督机制,提高参与农户评价;完善农村社会保险体系,提高农户风险补偿预期。     

我国货币政策传导机制的实证研究

信贷市场是我国货币政策传导的主渠道，但贷款使用效率偏低，信贷市场在货币政策传导中面临来自商业银行和微观经济主体的障碍；利率下调减轻了企业负担，降低了债券发行成本，促进了储蓄分流，但储蓄、投资的利率弹性不大；我国证券市场主要是一个筹资场所，功能不全，货币政策传导作用有限；我国外汇市场是一个有管制的市场，人民币汇率“管理有余、浮动不足”，汇率机制在货币政策传导中的作用不大。     

货币政策传导的信贷渠道：理论与中国的现实

我国货币政策传导机制中,由于利率市场化程度不高、货币市场不发达等因素,制约了利率传导机制、资产价格机制、汇率传导机制的有效性。在回顾货币政策传导机制各种理论的基础上,分析我国货币政策的信贷渠道,并通过实证检验,揭示出目前信贷渠道仍然是我国货币政策传导的主要途径。     

基于产业异质性的银行贷款政策效应分析——来自上市银行的经验证据

在银行信贷资金配置存在产业间差异的假定下,建立引入产业因素的银行贷款决定模型,考察产业因素影响银行贷款渠道有效性的内在机制,并运用2007年到2010年14家上市银行和5组产业数据展开动态面板模型估计,结果表明：从贷款需求角度看,各个产业的产出对产业贷款的影响效应存在产业间差异;从贷款供给角度看,人民银行运用货币政策工具调控产业贷款的影响效应也存在产业间差异。也就是说,产业因素确实影响到人民银行调控各个特定产业贷款的力度。     

海面低仰角数字微波通信系统性能及体制分析

本文介绍了海面低仰角数字微波通信系统的特点，对海面电波多径衰落进行了理论计算，指出了通信系统抗衰落的方法和手段，并给出了一种抗衰落通信系统在海面通信试验中的测试数据。     

输电铁塔焊接缺陷及质量控制措施

文章通过对输电铁塔加工过程中可能存在的焊接缺陷进行分析,对铁塔加工焊接缺陷的影响因素进行探讨,总结出相应的焊接质量控制措施,以期提高输电铁塔焊接质量。     

Price and Volatility Transmission and Market Power in the German Fresh Pork Supply Chain

We investigate the relationship between the transmission of price volatility and market power in the German fresh pork supply chain. We use a theoretical model underpinning this relationship followed by an empirical application that uses monthly farm, slaughterhouse and retail pork price data for the period 2000–2011. We examine both the relationships of market power with price level transmission and price volatility transmission in the chain. We use a vector error correction model and least squares regressions to analyse price transmission and price volatility transmissions, respectively. Results show that retail market power limited both types of transmissions. Competition inducing policy measures coupled with measures that support price risk management initiatives of chain actors are suggested.     

华北油田冀中电网输配电线路存在的主要问题及应对措施

本文论述了华北油田冀中电网输电线路存在的老化、线路下方违章建筑物、树木顶线、杆塔缺土、施工车辆、挖掘机、吊车误碰导线跳闸等情况,并提出了应对措施。     

Price transmission,asymmetric adjustment and threshold effects in the cotton supply chain: a case study for Vidarbha,India

This study examines price transmission asymmetries in Vidarbha's (India) cotton supply chain from 2002 to 2012. The analysis takes account of thresholds in price adjustments toward their long‐run equilibrium. The first stage considers the price dynamics between international and Indian domestic cotton prices. The second stage considers price transmission from domestic to farm gate cotton prices in Vidarbha. Results from the first stage indicate that Indian and international cotton markets are well‐integrated. In contrast, the second stage reveals significant threshold‐type nonlinearities as well as asymmetries in price transmission between domestic and farm gate prices. The short‐run dynamics suggest that the pass‐through from domestic to farm gate prices is larger when domestic prices decrease than when they increase. Moreover, back of the envelope calculations suggest that the loss in revenue for a typical farmer from a decrease in domestic price is larger than the gains from an increase in domestic price of the same magnitude. The implication is that traders benefit from price fluctuations at the expense of farmers. Evidence from fieldwork in Vidarbha suggest that asymmetries revealed in this analysis may be linked to trader's market power and inadequate market information among farmers.     

流域蓄洪区运用风险预警信息传递联动研究——基于蒙洼蓄洪区利益相关者分析视角

以淮河干流蒙洼蓄洪区为例,分析行蓄洪区内各利益主体的利益诉求框架。运用实地考察法和关键信息人访谈法确定灾情预警信息依据,结合各利益主体的信息需求,提出相应的预警信息传递联动路径。以行蓄洪区预警决策层、管理层以及实施层为切入点,提出多层次、多主体共同参与的信息传递预警模式,以最大限度保障利益相关者的利益,进而实现蓄洪区灾情预警信息传递的价值最大化。