二滩拱坝初次蓄水的变位监测反分析

简要介绍了在二滩拱坝1998年5月初次蓄水期,通过拱坝垂线和监测网系统,用统计模型和确定性模型理论分析方法,建立了施加于坝体各作用量与坝体受作用后的效应量(变位)间的数学关系;并根据预先计算分析成果,提出了在初次蓄水运行中拱坝变位的参考预报值,实时对二滩拱坝实际工作状态作出安全评判。     

基于实物期权的石油项目投资决策研究

论文结合石油项目的具体特征,在价格不确定条件下研究石油开发投资决策背后的内在机制与路径。运用实物期权方法构建石油项目投资评估与决策模型,详细讨论各种不确定因素对石油项目投资价值与油价阈值的影响。在此基础上讨论了对石油价格首次达到阈值的期望时间与概率,对于企业把握投资时机具有重要的参考价值。     

抽水蓄能电站首机首次起动方式研究分析

对于大型抽水蓄能电站来说,首机起动方式是一个综合性的技术经济研究课题。根据电站自身的特点选取不同的起动方式,对于缩短电站建设工期以及节省投资均有较大帮助。在对国内、国外抽水蓄能电站起动方式进行了总结的基础上,对两种起动方式从技术以及经济方面作了初步分析,为今后抽水蓄电站能机组起动方式的选择提供一些参考。     

水库放水洞钢衬的防腐技术研究

本文对水库放水洞钢衬管的腐蚀机理和钢丝网丙乳砂浆的物理力学性能进行了分析研究，并介绍了水库放水洞钢衬管挂钢丝网喷丙乳砂浆的施工工艺、质量控制和检测方法。     

Sailing speed optimization for container ships in a liner shipping network

This paper first calibrates the bunker consumption - sailing speed relation for container ships using historical operating data from a global liner shipping company. It proceeds to investigate the optimal sailing speed of container ships on each leg of each ship route in a liner shipping network while considering transshipment and container routing. This problem is formulated as a mixed-integer nonlinear programming model. In view of the convexity, non-negativity, and univariate properties of the bunker consumption function, an efficient outer-approximation method is proposed to obtain an ε-optimal solution with a predetermined optimality tolerance level ε. The proposed model and algorithm is applied to a real case study for a global liner shipping company.     

Accidental Bequests: A Curse for the Rich and a Boon for the Poor*

When accidental bequests signal otherwise unobservable individual characteristics, such as productivity and longevity, the population should be partitioned into two groups: those who do not receive an inheritance and those who do. The first tagged group receives a Mirrlees second‐best tax schedule; the second group, when its type is fully revealed, faces a first‐best tax schedule. Receiving an inheritance makes high‐ability types worse off and low‐ability types better off. High‐ability individuals face a bequest tax of more than 100 percent, while low‐ability types face a bequest tax that can be smaller, as well as larger, than 100 percent, and it might even be negative.     

首件封样作业法

文章提出了一种新的作业管理方法。此方法以首件加工的产品作为封样,确定批次产品的实物检验标准,以此规范操作者、质检员、工艺技术员、设备维修工、生产管理人员等生产过程诸影响因素的行为,以促进产品质量和工作质量的整体提升。     

封建帝王“德主刑辅”观探视

"德主刑辅"作为一种治国理念、治国思想,是封建士大夫探索的理论结晶。但在现实生活中,封建帝王并非按其行事,而是因地制宜地实施其统治。实践证明,凡当帝王因地制宜实施统治时,便会国泰民安、国祚长久;反之,则会社会混乱、国祚短暂。     

The new exchange rate policy in the Asian emerging economies – goodbye trouble,hello comfort?

In this paper, we discuss new aspects of exchange rate policy that can be observed in the Asian emerging economies. In the first place, we show the alternative regimes they may choose and their respective pros and cons. Secondly, we concentrate on the recent strategy of systematic undervaluation of one's currency – figuring prominently among ‘big’ Asian players such as China and India – and the most likely implications of such a strategy for domestic allocation, distribution and stabilization goals. With the background of Germany's experiences in 1969, almost on the eve of the Bretton Woods' system collapse, we model a speculative attack on an undervalued currency in the vein of the Flood–Garber seminal paper from 1984. Now, however, the country in concern (just like India and China) possesses strong rather than weak fundamentals. The continuous accumulation of international reserves, in addition, leads to the question of an ‘optimal management’ of foreign exchange reserves in Asian emerging economies with regard to size and composition. We finally propose a sequence of reforms/policies that should be implemented in those Asian emerging economies on their still long journey to a regime featured by autonomous monetary policy, flexible exchange rate and capital mobility. A brief summary and an outlook for future research close the paper.