天然气储量价值评估模型

储量的资产评估和价值评价是矿业权流转、合作开发、上市评估及企业内部管理的必要步骤和前提。本文在成本法计算储量价值的基础上,首次提出了天然气的储量价值评估模型(超额收益综合模型)。模型以获得油气储量所需花费的社会平均勘探成本作为确定储量的基本价格,在社会平均勘探成本的基础上附加一定的平均利润和由于开采条件不同造成的级差价格,以此作为油气储量的价格。本文建立的天然气储量价值评估模型,在长庆油田和川西气田得到了实际的应用,初步印证了模型的先进性、实用性。     

Unequal access to energy efficiency in US multifamily rental housing: opportunities to improve

The energy efficiency of US multifamily rental housing is compared with other housing types. A real and growing energy efficiency gap is documented, particularly for lower income households. Findings are based on data from the 2005 and 2009 US Residential Energy Consumption Survey (RECS). Individual energy efficiency features related to HVAC (heating, ventilation and cooling) systems, appliances, and the building envelope are analysed along with weighted and unweighted total energy efficiency indices. Multifamily units occupied by low income renters had 4.1 fewer energy efficiency features in 2005 and 4.7 fewer in 2009 compared with other households. If the number of efficiency features was on par with other housing, the savings could be in the range of US$200–400 per year for most lower-income renters in multifamily buildings. There is an astonishing lack of information on how efficiency retrofits would affect property (real estate) metrics such as cash flow and value. Available evidence suggests that millions of US properties could be good retrofit investment opportunities. Better efficiency would allow renters to increase spending on food, healthcare and other essentials. This is not only an economic issue: it has implications for household health, social equity and environmental problems tied to energy consumption.     

浅析新格局背景下的增值电信企业生存之道

日前,工信部发布《中国(上海)自由贸易试验区外商投资经营增值电信业务试点管理办法》,不仅新增开放了四项业务并提高开放业务的外资最高持股比例,还将审批权限由工信部下放到上海市通信管理局,把审批期限大幅缩短至两个月。此次在上海自贸区试点开放的增值电信业务,力度非常大,全部8项增值电信业务中有7项在这里进行了开放试点。4月30日,经国务院批准,财政部和国家税务总局印发《关于将电信业纳入营业税改征增值税试点的通知》,明确从2014年6月1日起,将电信业纳入营改增试点范围,实行差异化税率,基础电信服务和增值电信服务分别适用11%和6%的税率,为境外单位提供电信业服务免征增值税。在如此鼓励国际化竞争的新格局背景下,国内的增值电信服务企业应如何应对政策及市场的机遇与挑战。     

Variance plus bias optimal response surface designs with qualitative factors applied to stem choice modeling

This paper explores the issue of model misspecification, or bias, in the context of response surface design problems involving quantitative and qualitative factors. New designs are proposed specifically to address bias and compared with five types of alternatives ranging from types of composite to D‐optimal designs using four criteria including D‐efficiency and measured accuracy on test problems. Findings include that certain designs from the literature are expected to cause prediction errors that practitioners would likely find unacceptable. A case study relating to the selection of science, technology, engineering, or mathematics majors by college students confirms that the expected substantial improvements in prediction accuracy using the proposed designs can be realized in relevant situations. Copyright © 2011 John Wiley & Sons, Ltd.     

Domestic fuel energy consumption in an Indian urban ecosystem

Berhampur is one of the oldest and biggest towns of Orissa State where 93% of people earn their living from non-primary economic activities. The fuel consumption structure reveals an element of rural bias since the domestic sector derives 49% of its energy used for cooking and heating from biomass sources. Firewood is the only fuel used by all income groups and almost all occupations. Other traditional fuels such as dungcake, agricultural waste and leaf litter are used in the town with different degrees of dominance in various occupation groups and income classes. The inequality of income distribution is reflected in the fuel consumption structure of the rich and poor with greater dependence on non-biomass in the high income group and biomass in the low income group. Family size is an important determinant of biomass fuel use. For the urban poor, there is a relationship between income and fuel consumption. There exists scope for enlarging the biomass base by utilising the available bio-wastes and developing a green belt around the town. This requires some rural features in the urban area using new technologies.     

职工收入分配的突出问题及解决路径研究

我国高校岗位津贴制度的实施问题是我国高等教育改革的重点和难点问题。论文在肯定高校岗位津贴制度的实施成效的基础上,调查分析实施过程中的突出问题,进而对收入分配模式的完善进行探讨,即提出我省建立以聘任制为基础、以现代薪酬理论为指导、以岗位绩效工资为主、货币化福利为辅的现代高校教职工收入分配模式。     

探矿权采矿权与所有权收益之关系的思考

分析和探讨了探矿权和采矿权的内涵和实质,研究分析了国家作为矿产资源所有者、投资者和社会管理者3个不同身份对于探矿权采矿权的不同的权利职责、影响和作用。认为探矿权价款实际上是弄清家底(矿产资源)所付出的代价,而采矿权价款则是国家凭借所有权获得的所有权收益。探矿权使用费和采矿权使用费则是国家作为管理者对矿产资源进行监督管理的体现。探矿权采矿权的设立和实现,是国家作为矿产资源所有者实现其所有权收益的过程,是国家作为投资者获得投资收益的过程,同时也是国家作为管理者进行监督管理和提供服务以及促进国民经济健康发展的过程,当然也是探矿权人和采矿权人获得相应合理经营收益的过程。     

面向社会资本建设的阶梯式水价管理策略

通过对阶梯式水价的分析,指出在阶梯式水价的操作中存在管理收益,但与管理收益同时存在的还有实施瓶颈和成本,瓶颈就是用水定额的制定,成本则为巨大的抄表工作量。最后给出一种面向社会资本建设、能够实现双赢的阶梯式水价操作方法。     

股票价格变化伊藤过程的实证分析

讨论了股票价格变化的伊藤过程，并在假设不分红利的情况下，对伊藤过程的预测效果进行了实证研究。研究表明，伊藤过程的预测效果决定于对总体预期收益率和易变性参数的估计。     

Effect of fabrication procedure and metal quality of pipes formed from chromium-magnesium steel on their service properties

This paper examines the effect of fabrication procedure and metal quality on the service properties of pipes fashioned from chromium-magnesium steel DI59. The kinetics of the development of creep strain of the metal in the temperature region from 650 to 730°C is investigated. It is indicated that vigorous strain begins to develop after 90% of the expected life has been exhausted. It is established that in the steel under investigation, the content of σ-phase over the entire period corresponding to 30–90% exhaustion of expected life varies negligibly from 1.8 to 2.5%, and cannot be a criterion for estimation of exhaustion of the metal’s expected life. The investigations that we conducted on steel DI59 tubes fabricated in accordance with a new procedure indicated a significant increase in the long-term ductility of the steel, which dictates the high quality of the metal. __________ Translated from élektricheskie Stantsii, No. 6, June 2007, pp. 30–34.