陕西省石油产业发展战略研究

在全面分析了陕西省油气产业的发展现状和发展环境的基础上，结合对其发展状况的总体评价，包括对油气开发、油气转化和相关产业的评价，给出了陕西省石油产业发展战略的总体思路以及相关政策的设计。     

石油企业改革与产权制度建设

迄今为止的石油工业组织制度变迁符合国有企业市场化过程中产权制度改革为主导的改革模式。重组改制后的中国石油存在着产权关系不清、产权结构不完善、产权主体不规范的问题。针对产权问题提出了工龄赎买、职工入股、完善投资主体结构等对策。     

油气生产成本的组合预测研究

进行油气生产成本预测是增强资源型产业竞争力的有效机制。然而油气生产成本内容的相对复杂性导致单一预测方法存在预测信息不够周全、预测价值有限的弊端,通过实施单一预测结果的误差分析,获取组合预测模型的修正权重,应用组合化模型进行油气生产成本预测,能够有效发挥单一预测方法的优势,获取相对优化的整体预测结果。     

水葫芦对五种重金属离子的去除速率与富集机制研究

通过静态模拟实验 ,采用火焰原子吸收分光光度法测定了水葫芦对Cu2 + 、Pb2 + 、Cd2 + 、Zn2 + 、Fe3 + 等离子的短期个别去除速率、复合去除速率及水葫芦根茎叶的富集量 ,结合耐受性实验 ,对其富集机制进行了探讨。水葫芦的累积去除率 ,头两天为 :Pb >Cu >Zn≈Cd >Fe ,以后为 :Pb≈Fe >Cu >Zn >Cd ;耐受性则大致为 :Zn >Cd >Fe >Pb >Cu。表明水葫芦在快速高效去除低浓度含铅废水、治理含镉废水和作为铜污染的指示性植物等方面有良好的应用前景。     

基于GARCH族模型的WTI原油价格波动特征检验

针对WTI原油价格波动具有聚集性的特点,首先利用GARCH模型实证分析,得出WTI原油价格波动受外部因素影响大,并且持续时间长;其次根据GARCH-M模型检验得出,WTI价格波动具有高风险高收益的金融市场特征;最后借助EGARCH模型检验得出,WTI原油价格波动具有杠杆效应,即价格波动主要受负面消息影响,表现出价格变化以上涨为主的特征.     

Balanced Bayesian LASSO for heavy tails

Regression procedures are not only hindered by large p and small n, but can also suffer in cases when outliers are present or the data generating mechanisms are heavy tailed. Since the penalized estimates like the least absolute shrinkage and selection operator (LASSO) are equipped to deal with the large p small n by encouraging sparsity, we combine a LASSO type penalty with the absolute deviation loss function, instead of the standard least squares loss, to handle the presence of outliers and heavy tails. The model is cast in a Bayesian setting and a Gibbs sampler is derived to efficiently sample from the posterior distribution. We compare our method to existing methods in a simulation study as well as on a prostate cancer data set and a base deficit data set from trauma patients.     

石油天然气管道安全保护带递延“法相”要论——以《石油天然气管道保护法》修订为背景

石油天然气管道安全保护带制度是《石油天然气管道法》的核心部分,但理论界和实务界对该管道安全保护带的主要性质、划定依据、权利结构等的认识并不统一。石油天然气管道安全保护带是以“不得危害和危及管道安全”为原则,以管道本体为中心,按照对管道安全构成危险的危险源性质和距离管道中心线宽度不等的危险等级划分的连续禁限作业地带,包括管道安全核心保护带、管道安全重点保护带、管道安全高危风险控制带。在石油天然气管道的禁限作业等级地带,因危险源的性质、等级不同而成立不同的法律关系,共同构成石油天然气管道安全核心保护带、管道安全重点保护带法律制度。     

Oil prices,stock market returns and volatility spillovers: Evidence from Turkey

This paper examines the relationship between crude oil prices and stock market returns in Turkey taking into account volatility spillovers that are exemplified by second moment effects. Using weekly data from 1990 to 2017 and time varying causality-in-mean and causality-in-variance tests and taking into account structural breaks, we model each series as an EGARCH process in order to capture any leverage effects in the volatility of returns. Empirical results suggest crude oil prices as measured by Brent benchmark have significant effects on stock market returns in Turkey. While we fail to document significant spillover effects stemming from oil prices in the entire sample, there are significant spillover effects from crude oil price changes to stock market returns in 1993 and 2008–09. These results suggest that government policies must take into account risk spillover effects between markets and that investors are better off monitoring crude oil markets in portfolio allocation decisions.     

重化工业与产业组织重型化:历史经验和机理性分析

重化工业化不仅表现在产业结构中重化工业在整个国民经济中所占的比重较大,而且还表现在重化工业的企业组织结构中大型企业占主体,即产业组织的重型化上。重化工业在技术创新、规模经济和范围经济、资本积聚过程等几个方面都会对产业组织产生影响,同时也受产业组织的制约。