降低大口径容积式流量计计量误差的探讨

国内原油长输管道交接计量大多采用大口径容积式流量计。尽管容积式流量计误差可控制在±0.2%以内,但受制造工艺和使用条件,以及流量计检定工况与交接工况的差异、油品物性参数变化等因素的影响,流量计的计量误差有时较大。以交接计量油量计算实例,探讨采用流量计系数修正的方法,降低容积式流量计的计量误差。     

液压挖掘机机外辐射噪声分析与改进

液压挖掘机噪声直接影响整机舒适性,也是打开欧洲市场大门的关键钥匙之一;本文分析了液压挖掘机的主要噪声源及形成机理,通过频谱分析与试验,识别与定位了噪声源;针对不同噪声源,提出了合理的噪声治理措施,试验结果表明,某液压挖掘机机外辐射噪声降低3.7dB(A),证明该方法实用有效。     

浅谈高校考风建设与诚信教育

考风是校风的重要组成部分,是一所大学传统底蕴和办学理念的集中体现。良好的考风考纪是提高人才培养质量的必要因素,是维护学生评价工作的严肃性和权威性的保证。可是在当前高校中,考风不正是一个相当普遍的问题,这不仅违反了考试公平、公正原则,而且无法正常反映出教与学的效果,考风不正的原因有很多,诚信教育的缺失是主要方面。本文对当前高校考风中存在的种种问题进行了系统分析和总结,然后针对这些问题,从多个方面入手提出相应的对策。     

North–South terms‐of‐trade trends from 1960 to 2006

The composition of exports of developing countries is increasingly dominated by manufactured goods. This has not changed the fact that their major trading partners continue to be the developed countries. In order to properly assess the distribution of gains from trade, there is a pressing need to analyze the movements in the terms of trade of developing countries with respect to the developed ones. A statistical analysis of the North–South terms of trade reveals that the terms of trade have turned against the South since the 1960s. However, the terms‐of‐trade deterioration is neither continuous nor evenly distributed over different country groupings. The existence of a structural break in the mid‐to‐late 1970s together with the greatest adverse terms‐of‐trade movements against the highly indebted and least developed countries attest the discontinuity and unevenness of this process.     

A Phillips curve interpretation of error-correction models of the wage and price dynamics

This paper presents a model of employment, distribution andinflation in which a modern error correction specification ofthe nominal wage and price dynamics (referring to claims onincome by workers and firms) occupies a prominent role. It isbrought out, explicitly, how this rather typical error-correctionsetting, which actually seems to capture the wage and pricedynamics of many large-scale econometric models quite well,is fully compatible with the notion of an old-fashioned Phillipscurve with finite slope. It is shown how the steady-state impactof various shocks to the model can be profitably conceived ofand interpreted in terms of (and to some extent even calculatedby means of) this long-run Phillips curve.     

Shaken or Stirred? Financial Deregulation and the Monetary Transmission Mechanism in Norway

Is there a credit channel for monetary policy? Has the deregulation of financial markets had any temporary or permanent effects on the monetary transmission mechanism? We present empirical evidence on these issues for Norway by estimating a dynamic system of money, credit, real income and inflation. We find that the deregulation process has not caused any permanent shifts in the long‐run demand functions. Within a small simultaneous dynamic model, there is some evidence for the credit view of the monetary transmission mechanism, as both credit and money exhibit strong and stable effects on aggregate demand. JEL classification: E50; E44; C51     

印前图像质量控制的实现

原稿图像质量与印刷品图像质量的一致性是我们印刷从业人员一直以来所追求的目标。由于印刷技术的局限性,要完全地达到一致的效果比较困难。印前图像质量是决定印品质量的关键因素之一,做好印前图像质量的控制,是实现精美印品质量的根本。下面将从图像的扫描、Photoshop分色参数设置、输出设备校正三个方面实现对印前图像质量的控制。     

论高校体育课堂心理氛围的优化

体育课堂心理氛围的优化对于大学生的认知、情绪情感和意志品质的培养、身心健康的维护具有重要意义,高校体育教师应通过为大学生设立适宜的体育学习目标、创设生动活泼的教学情境、对大学生实施民主管理和提出适度期望来优化高校体育课堂心理氛围。     

我国就业影响因素实证研究——基于JJ协整模型与ECM模型的分析

本文使用索洛模型为基础的变化模型研究我国就业量的影响因素,引入国民生产总值、城市化率、居民消费水平、历年全社会固定资产投资、第三产业增加值为解释变量做实证研究,建立时间序列分析模型,并通过各变量间的JJ协整关系模型与误差修正模型说明各因素对就业的长短期影响,结果表明长期内我国国内生产总值对就业总量有显著地正向拉动作用,城市化率与就业总量有显著地负相关关系,居民消费水平长期内与就业总量成正相关关系,第三产业增加值与就业总量有微弱的负相关关系,短期内我国就业总量受到自身滞后期的正向冲击且需要外力拉动。在此结论基础上本文尝试提出了相关政策建议。     

基于外溢效应的创意产业氛围投资及绩效提升研究

创意氛围是创意产业化不可缺少的一环。氛围投资将构建外溢效应的渠道,促进创意知识溢出,于是,创意氛围投资及绩效提升成为财务管理的一个新的领域。本文试图以外溢效应为切入点探讨创意产业的氛围投资及融资管理,从知识管理的角度考察减少创意产业化成本及提升绩效的途径,以抛砖引玉。