LONWORKS现场总线质量控制技术在油田生产中的应用

现场总线是一种安装在生产过程区域的现场设备或过程仪表和控制室内的自动化控制系统之间的开放式、数字化、双向串行、多节点的数据通信总线。该技术是近年来随着计算机、通信、控制技术的进步，数字通信网络应用到工业过程现场控制后，逐渐发展．并得到广泛应用的现代控制技术，目前，比较有名的有FF、Profibus、LONWORKS、HART、CAN等总线。     

Minimum consumption and transitional dynamics in wealth distribution

This paper investigates quantitatively how initial wealth holding differences across households are propagated through time in a one sector growth model economy. A key feature of the model is that household consumption cannot fall below a positive level each period. The existence of a minimum consumption requirement implies that the Intertemporal Elasticity of Substitution not only differs across households but also changes differently over time. This model is calibrated to match some key aggregate statistics of the U.S. economy. We find that, as in the data, the wealth distribution in our benchmark model economy exhibits a (brief) period of increasing inequality, a short period in which inequality diminishes and a steady level of inequality along the balanced growth path. However, our model illustrates that the evolution of inequality is very sensitive to the length of the transition path. Additionally, our model predicts an upsurge in wealth inequality following the productivity slowdown in the 1970s.     

Automatic balancing mechanisms for notional defined contribution accounts in the presence of uncertainty

The notional defined contribution model combines pay-as-you-go financing and a defined contribution pension formula. This paper aims to demonstrate the extent to which liquidity and solvency indicators are affected by fluctuations in economic and demographic conditions and to explore the introduction of an automatic balancing mechanism (ABM) into the pension scheme. We demonstrate that the introduction of an ABM reduces the volatility of the buffer fund and that, in most cases, the automatic mechanism that re-establishes solvency produces the highest value of the risk-adjusted notional factor.     

Energy and CO2 emission relationships in the NAFTA trading bloc: a multi-regional multi-factor energy input–output approach

The North-America Free Trade Agreement (NAFTA) has brought together the economies of Canada, Mexico, and the US into forming one of the largest trading blocs worldwide (within the top CO₂ emitters). However, the current global protectionist discourse threatens the agreement. This paper analyzes the energy and energy-related CO₂ emission relationships between NAFTA countries in 2014 to gain insights into the climate change implications of current integration and the possible cancelation of the agreement. The analysis is performed with a multi-regional version of the multi-factor energy input–output model. The results show that NAFTA has not built a single integrated energy system, though it has helped reduce energy-related CO₂ emissions. Moreover, if NAFTA is not revoked, further integration would depend on the capacity of the Mexican energy sector to converge to the performance of its trade partners’ energy sectors. Conversely, a broken deal would induce negative environmental externalities.     

The raw material basis of global value chains: allocating environmental responsibility based on value generation

A new approach to allocate environmental responsibility, the ‘value added-based responsibility’ allocation, is presented in this article. This metric allocates total environmental pressures occurring along an international supply chain to the participating sectors and countries according to the share of value added they generate within that specific supply chain. We show that – due to their position in global value chains – certain sectors (e.g. services) and countries (e.g. Germany) receive significantly greater responsibility compared to other allocation approaches. This adds a new perspective to the discussions concerning a fair distribution of mitigation costs among nations, companies and consumers.     

长三角区域劳动力市场一体化发展的问题分析与建议

长三角区域要素市场中,劳动力市场化改革滞后于商品、资本市场,且劳动力市场的分割指数较大。劳动力市场呈现出“招工难”与“就业难”矛盾并存、流动人口的人力资本存量省市间差异显著、“收敛”与“发散”趋势并存、工资差距未现明显收敛等演变态势,同时也存在差异化的经济发展水平、不合理的产业结构、歧视性的户籍制度、分割的就业壁垒、不同的社会保障体系等主要瓶颈。基于此,本文在廓清劳动力市场一体化内涵释义、总结国外劳动力市场一体化模式与经验的基础上,针对长三角劳动力市场一体化发展面临的问题与困难,结合长三角区域一体化战略目标,提出了具有针对性的思考和实践举措。     

关于构建我国银行危机预警指标体系的思考

银行危机预警指标体系是我国银行危机预警体系中的重要组成部分.结合国内外的一些研究成果,认为银行危机预警属于宏观与微观相结合的研究范畴,所以在构建预警指标体系时综合考虑外部环境对银行业的影响和冲击以及银行业自身运营状况两个方面,选取8个宏观经济指标和5个大类、13个分类银行体系自身指标构建起我国银行危机预警指标体系.     

贸易与环境问题的南北关系研究综述

国际贸易的发展与环境问题的全球化有着极为密切的联系,而国际贸易中的环境问题又往往和南北问题交织在一起。南北方在贸易与环境问题上的理论视角存在很大差异。如南北方在贸易环境价值观、资源保护与环境剥削、国内外政策协调等方面都有分歧。本文通过对国内外贸易与环境问题有关文献的梳理、总结和评述了南北方在贸易与环境问题中的分歧和主要冲突．深入剖析了产生这些分歧的主客观原因。     

Estimation of investment costs in fish processing plants

Investment costs for fish processing plants are hereby presented along with a detailed analysis of different types of processes in relation to economies of scale.The cost-capacity factor for fish industry is estimated as 0.84, except for fish meal plants where the cost-capacity factor is 0.61.It is also discussed how technology, capacity and location in developed and developing countries can affect investment costs for fish processing plants, while cost-capacity factors remain unchanged.The concept of minimum limit for industrial capacity is included. Investment costs for minimum size plants or plants below minimum size are even greater than what would correspond to the correlation line. This is due to the need to incorporate one or more oversized pieces of equipment.     

中国农民工供给态势与“十二五”时期走向

我国农村劳动力转移已进入总体上仍然过剩,但结构性供求矛盾开始突出,农村劳动力供求关系正从长期供过于求转向总量过剩,结构短缺的新阶段。促进农村劳动力转移仍将是我国中长期的重要任务。十二五以及更长时间内,要做好劳动力转移工作,必须把产业结构优化调整放在重要的位置,坚持发展服务业,有序积极推进农民工市民化工作,进一步增加对农村居民培训的投入,提高农村劳动力的受教育程度和技能水平,进而促进社会和谐发展。