Using jump-diffusion modeling for valuing real options in infrastructure projects

In infrastructure financed projects, in order to attract private investors, host governments often provide some guarantees. This paper develops a value model of minimum revenue guarantee with multiple-exercise real options under the impact of the emergency incident. The model is applied to infrastructure financed projects using the minimum revenue guarantee under simulation. The simulation results indicate that, before quantifying the value of the minimum revenue guarantee, it is necessary to forecast the jump degree and intensity of the emergency incident, as well as prevent and control risks arising from such emergencies. Otherwise, underestimation of the guarantee value will occur and the government will have to bear huge debt in this condition. We also analyze the dependence of the guaranteed value on the minimum guaranteed revenue level, initial revenue and number of exercise rights. For various conditions, the diagrams of the guaranteed value are also presented.     

Neuroproteomics and its applications in research on nicotine and other drugs of abuse

The rapidly growing field of neuroproteomics is able to track changes in protein expression and protein modifications underlying various physiological conditions, including the neural diseases related to drug addiction. Thus, it presents great promise in characterizing protein function, biochemical pathways, and networks to understand the mechanisms underlying drug dependence. In this article, we first provide an overview of proteomics technologies and bioinformatics tools available to analyze proteomics data. Then we summarize the recent applications of proteomics to profile the protein expression pattern in animal or human brain tissues after the administration of nicotine, alcohol, amphetamine, butorphanol, cocaine, and morphine. By comparing the protein expression profiles in response to chronic nicotine exposure with those appearing in response to treatment with other drugs of abuse, we identified three biological processes that appears to be regulated by multiple drugs of abuse: energy metabolism, oxidative stress response, and protein degradation and modification. Such similarity indicates that despite the obvious differences among their chemical properties and the receptors with which they interact, different substances of abuse may cause some similar changes in cellular activities and biological processes in neurons.     

Spectral Method for Thermal Conductivity Calculations

We discuss several post-processing issues in molecular dynamics (MD) calculation of lattice thermal conductivity using the Green–Kubo formula. For crystals with high thermal conductivity such as SiC, converting the MD raw data on heat current fluctuations into thermal conductivity result is non-trivial. One can accelerate the process using Fast Fourier Transform and the spectral method. A few mathematical subtleties are cleared up. Due to finite data length, integration of the correlation function must be terminated before noise takes over; two termination criteria are proposed which give reasonable results for crystalline β-SiC. A simple solvable model that illustrates the above points and can be used for code-checking is presented.     

中小企业硅烷交联聚乙烯绝缘单线制造的探索

硅烷交联聚乙烯绝缘单线制造可以借鉴聚氯乙烯绝缘单线的制造,然而,其对导体制品的要求和绝缘挤出工艺存在着很多不同之处。本文通过比较和分析,探索传统生产聚氯乙烯绝缘电线电缆的中小型企业,通常产品的产量较小、品种较多、一机多用或品种变化频繁的条件下,增加硅烷交联电线电缆生产时,在绝缘单线制造中应采取相应的对策和注意事项,指出了导体制造、绝缘挤出和交联工艺中质量控制要点。     

VC下实现基于Modbus协议的DCS与远程I/O系统通信

本文在分析Modbus协议及其通信原理的基础上，结合工程实际，提出了一种在工业PC机上实现串行通信的方法，并在Visual C 6．0环境下开发了通信的应用程序，实现了基于Modbus协议的DCS与远程I／O系统通信。     

On-line free-flight path optimization based on improved genetic algorithms

Free flight (FF) is the ideal strategy of current investigations on air traffic management systems, where an on-line flight path optimization algorithm is of top importance. This paper proposes an innovative algorithm with potential real-time properties for FF path optimization, by using an improved genetic algorithm (GA). Two kinds of mathematical models for the on-line flight path optimization problem are proposed to cover the near and far future applications. Several improvements are introduced to the GA to speed up its convergence as well as to improve performance. Simulation results show that the new algorithm is effective and has potential to solve the on-line FF path optimization problem in real time.     

程控高压脉冲系统自动控制功能的实现

本文简介了程控高压脉冲系统的结构与功能,主要从软件设计开发方面介绍程控高压脉冲系统自动控制功能的实现,并对在软件开发过程中的关键技术进行了探讨.     

对气体分析仪现状与发展的初步探讨

本文较详细地介绍了氩、氧、水分等几种分析仪器 ,阐述了它们的工作原理、优点、缺点及使用中应注意的问题     

Growth of aluminum nitride thin films prepared by plasma-enhanced atomic layer deposition

Aluminum nitride (AlN) thin films were deposited by atomic layer deposition from aluminum chloride (AlCl₃) and an ammonia/hydrogen plasma. The most important role of the ammonia/hydrogen plasma was to act as a reducing agent to extract Cl from AlCl₃, and to form AlN subsequently. The growth rate was saturated at ∼0.042 nm/cycle, and the thickness was proportional to the number of reaction cycles. Repeating this reaction cycle led to precisely controlled growth. The film properties were analyzed using Auger electron spectroscopy, X-ray photoelectron spectroscopy, Rutherford backscattering spectroscopy and time-of-flight elastic recoil detection analysis. The concentration of chlorine and hydrogen impurities was 0.23 and 2.01 at.%, respectively. AlN films showed good anti-oxidation properties when O₂ was annealed at 650 °C for 30 min.     

关于管理信息化工作的思考

本文探讨在管理信息化工作的关键内容,分析了信息、信息工具与管理工作的关系,强调信息数据的重要性。认为信息是管理工作的主要内容,信息的载体从纸张介质向电磁介质转化,信息工具因此发生了重要变化。管理工作是对工作中产生的信息进行处理,信息量的大小决定了组织结构,信息的如何处理决定了管理的工作流程。管理信息化工作要从信息载体变化的前提出发,考虑这个转变所带来的各种困难,充分应用信息工具的各种资源。在管理信息化工作中应考虑企业的成本和效益。管理系统应从业务出发,打破部门的界限,从数据源头开始,着重考虑权限的榨制,增强灵活性和适应性。