32 research outputs found
China’s inflation and economic growth correlation research
为了对当前全球通货膨胀和经济增长放缓的现象及趋势有全面的认识,本文对通货膨胀和经济增长两者之间的关系进行了研究。以分析中外通货膨胀和经济增长两者之间关系的不同理论为切入点,阐述了我国当前的通货膨胀现状,以及政府采取的调控政策后,出现的经济增长下滑的新问题并采取相应的政策调整的过程。应用几种计量方法和模型对经济增长率和通货膨胀率这两个指标关系进行测度和检验和实证研究,并分析和归纳了所得到的实证结果。最后,结合当前的经济形势,给出了经济政策建议。 通过运用平稳性检验和单位根检验、协整和误差修正模型、Granger因果关系检验和自回归条件异方差模型,对通货膨胀率和经济增长率之间的关系进行实证分析,...For postpones to the current whole world inflation and the economic growth the phenomenon and the tendency comprehension , this article have conducted the research to between the inflation and the economic growth relations. Take analyzes the different theory which between the Chinese and foreign inflation and economic growth both relates as the breakthrough point, elaborated our country current in...学位:经济学硕士院系专业:经济学院金融系_金融学(含保险学)学号:X20044102
一维平推流反应器动态模型的新型求解方法
目前对一维平推流反应器动态模型求解时,常将反应体系中气体的体积流量假设为恒定参数。由于实际过程中气体的体积流量会随着温度等相关参数的改变而不断变化,该假设会对模拟结果带来一定的误差。本文针对此问题提出一种新的求解方法:首先通过有限差分法将动态模型中的空间和时间变量均离散化得到相应的代数方程组,再结合气体状态方程,推导出浓度关于气体摩尔流量和温度的函数,然后联立方程组进行求解;此方法有效克服了动态模拟中由于气体的体积流量变化而导致模型方程难以求解的困难。将所提出的方法应用于丙酮气相裂解生成乙烯酮过程的动态模拟,并将所得到的模拟结果与线上法动态模拟的结果进行比较,结果表明所提出的求解方法得到的模拟结果更加精确。国家自然科学基金面上项目(21576228
The Evaluation of Management Right Value of Scenic Spots——Based on the Research Perspective of Real Options
景区经营权价值评估是实现我国景区经营权合理流转的关键,但以收益还原法为主流的现行方法并不能准确地评估景区经营权价值。通过研究,本文发现,引入实物期权概念能够提升景区经营权价值评估的准确性。本文以产权视角为切入点,通过景区经营权实物期权的动态和静态特征研究景区经营权的期权价值形成、演变机理,以冠豸山国家重点风景名胜区为例,初步实证了实物期权视角下的景区经营权价值评估,并得出如下结论:(1)景区经营权价值是一种依托于旅游资源的产权价值,其价值评估的实质是资本化景区旅游资源开发权利的价值,产权视角下的景区经营权,本质上是一种按年度执行的多期嵌套实物期权,旅游资源是其标的资产;(2)基于实物期权的景区经营权价值形成表现为:景区投资开发过程中,投资柔性给景区预期旅游收益与投资开发成本之间带来的差额变动;(3)景区经营权的实物期权特征是一个动态的变动过程,各阶段的期权价值呈现先增后减的变化态势,期权价值在经营权到期日将变为零;(4)融入实物期权法较单纯采用收益还原法更加科学,评估结果更为客观,实际参考价值更大;(5)在构建单一期权条件下的景区经营权期权价值评估模型的基础上,以冠豸山风景名胜区为例,通过与现有评估方法进行对比研究,进一步验证了实物期权理论在景区经营权价值评估中的应用价值。The transfer of management right of scenic spots is a typical phenomenon of Chinese tourism industry,and the assessment of managerial right value is the key issue in the transformation process of property right.After years of academic research,the Income Capitalization Approach has been mainly used in the value evaluation of management right.However,it is informed that the Income Capitalization Approach which is the mainstream of current methods can not completely solve the problems of the value evaluation of management right of scenic spots.Through research we find that the Real Option Theory is more helpful in the value evaluation of management right.Based on this,using the perspective of property right as the breakthrough point,this paper analyzes the dynamic and static real option characteristics of the managerial right,expounds the formation and evolution mechanism of the managerial right value of scenic spots,and makes a national scenic spot of GuanZhai Mountain as example,preliminary analyzing the value assessment of managerial right based on the perspective of real options.Based on the abovementioned analysis,the paper draws the following conclusions:( 1) The managerial right value of scenic spots is a kind of property value relying on tourism resources,and it is essence of the value evaluation that capitalizing the right value of tourism resources development.( 2) With the perspective of property right,the managerial right of scenic spot can be regarded as a kind of multiphase nested real option,and tourism resources are the underlying assets.( 3) The performance of option value of managerial right is determined by the flexibility which increases or compensate the investor`s profit,the managerial right value of scenic spot based on the real option value is manifested as the difference between the expected tourism income and investment cost.( 4) The real option characteristics of managerial authority is a dynamic process,the option value of each phase will first increase to a maximum value and then decrease to zero when the managerial right is over.( 5) The method by introducing real option is better than Income Capitalization Approach,which is more objective,more realistic and the evaluation results is also more reference.( 6) Using the option value assessment model of managerial right based on the condition of single option,and taking the GuanZhai Mountain for example,we calculate the managerial right value of GuanZhai Mountain,The result of the calculation is 207.5 million Yuan,the option value of managerial right of GuanZhai Mountain is 112.5 million Yuan.This result is 25.5 million Yuan more than the results( 182 million Yuan) calculated by traditional methods.Furthermore,the paper validates the application value of real option theory in the assessment of managerial right value of the scenic spot under uncertainty with a comparative study with the existing assessment methods( Travel Cost Method,Contingent Valuation Method and Income Capitalization Approach).In addition,we discuss the problem of the fluctuation of the underlying asset price of managerial right of scenic spots,and provide some comments.What's more,this study only puts emphasis on the theoretical study and fundamental analysis,empirical assessment modeling remains to be further studied.In the development process of the Real Option Theory,the theory itself still exist some difficulties and challenges in the theory and practice research.To make the theory be a more applicable and accurate method of the value evaluation of managerial right and investment analysis tools,we still need to continue to improve and perfect the theory
长江中下游地区浅水湖泊群中无机氮和TN/TP变化的模式及生物调控机制
对长江中下游地区33个浅水性湖泊的氨态氮(NH_3-N)、硝态氮(NO_3-N)、亚硝氮(NO_2-N)和氮磷比(TN/TP)在生长季节和非生长季节的变化进行了研究。各营养盐浓度之间均呈显著正相关,整体上生长季节的相关性较好。当TP>0.1 mgL~(-1)时,随TP浓度的升高,非生长季节氨态氮浓度增加较快,硝态氮在生长季节呈增长趋势而在非生长季节有下降的趋势,这主要因为非生长季节超富营养湖泊中的溶氧和温度较生长季节低,而硝化作用对溶氧和温度较敏感所致。当TP为0.035 mg·l~(-1)~0.1 m
research and implementation of trusted full disk encryption system based on tcm
基于可信计算技术中的可信根、信任链和可信存储的概念,设计并实现了一种基于TCM(trusted cryptographymodule)的全盘加密系统(full disk encryption system,FDES)。FDES系统具有加密和认证功能,利用device-mapper(DM)提供的从逻辑设备到物理设备的映射框架机制,嵌入在Linux内核中,利用TCM芯片提供的加密、认证和存储等功能,实现对全部硬盘的透明加解密功能,从而确保了安全机制的不可旁路性和可靠性。国家973重点基础研究发展计划基金项目(2007CB311100)|国家高科技研究发展计划基金项目(2009AA01Z441)|核高基基金项目(2010ZX01037-001-001)|信息网络安全公安部重点实验室开放课题基金项目(C11610)|信息安全国家重点实验室(中国科学院软件研究所)开放课题基金项目(04-04-1)|北京市自然科学基金项目(4123093
基于分布式光纤振动传感的海缆锚害故障检测
为了利用分布式光纤振动传感技术进行光纤复合海底电缆(简称为海缆)锚害故障检测,开展了海缆运行现场的锚害试验。用550吨的货船和1 000kg的船锚模拟了锚砸和拖曳事件,用基于相位敏感光时域反射计(Ф-OTDR)技术的分布式光纤振动传感设备对3.3km三芯海缆内的光纤进行了实时监测,获得了海面平静、锚砸和船锚拖曳3种情况下,光纤振动信号的能量和快速傅里叶变换幅度谱在时间和空间上的分布数据,并对其进行了分析。结果表明,海面平静时能量和幅度都很小,锚砸时能量和幅度会产生短时上升且频率成分丰富,船锚拖曳时能产生较长时间的能量和幅度上升,但频率成分较锚砸少。分布式光纤振动传感技术可有效检测锚害故障
