小学语文长文短教之我见

"题目"是文章的眼睛,透过文题可以窥探文章的主旨。通过"题目",教师可以熟练地驾驭教材,有效地组织课堂教学,找到教学的突破口,把握文章的中心思想。     

约束稀疏脉冲反演在GX气田开发中的应用研究

GX气田北部地区构造、断层特征较为复杂,地质建模较困难,而约束稀疏脉冲反演是一种基于地震道的反演方法,它是在波阻趋势的约束下,用最少的反射系数脉冲达到合成记录与地震道的最佳匹配。该方法对初始模型依赖性较小,中高频部分不受初始模型的影响,其反演结果能忠于实际地震资料,分辨率与地震资料接近,保真度高。以GX气田为例,通过约束稀疏脉冲反演技术对GX气田开展储层预测,其反演结果与实测井曲线吻合较好,能客观反映地质体在横向上的变化特征,该方法适用于储层横向变化快和非均质性较强的少井区块。     

高职院校《模拟电子技术》教材编写探讨

现有的《模拟电子技术》高职高专教材中普遍存在理论偏深、实践应用内容偏少的问题。高职高专教材应以高职教育培养目标为教材建设与改革的方向,以此选择教材内容并优化其结构,通过实践环节培养创新人才,增强学生学习兴趣,培养学生的实际应用能力。     

SHORT‐RUN POLICY COMMITMENT WHEN INVESTMENT TIMING IS ENDOGENOUS: ‘MORE HARM THAN GOOD?’

In our model, firms choose when to set cost‐reducing investment and the government, which only has short‐run commitment power, sets an output subsidy. We show that firms that delay investment without government intervention have an incentive to invest early under policy activism, strategically underinvesting or overinvesting to obtain larger subsidies. The policy scheme thus creates a new, potentially more harmful, distortion. Under oligopoly, a firm has a weaker incentive to manipulate policy than under monopoly, which makes policy intervention less harmful. We investigate when the government may do better by adhering to laissez‐faire than by engaging in active policy intervention.     

CEO career horizon,corporate governance,and real options: The role of economic short‐termism

Research Summary: Combining studies on real options theory and economic short‐termism, we propose that, depending on CEOs’ career horizons, CEOs have heterogeneous interests in strategic flexibility, and thus, have different incentives to make real options investments. We argue that compared to CEOs with longer career horizons, CEOs with shorter career horizons will be less inclined to make real options investments because they may not fully reap the rewards during their tenure. In addition, we argue that long‐term incentives and institutional ownership will mitigate the relationship between CEOs’ career horizons and real options investments. U.S. public firms as an empirical setting produced consistent evidence for our predictions. Our study is the first to theoretically explain and empirically show that a CEO's self‐seeking behavior will impact real options investments. Managerial Summary: This article helps to explain how a CEO's self seeking‐behavior may shape a firm's real option investment, which could result in different level of strategic flexibility. We argue that CEOs with short career horizons have less time to exercise their firms’ real options, which should lower the investments in the firms’ real options portfolios relative to CEOs with long career horizons. We study a sample of U.S. public firms and find strong evidence that a CEO's expected tenure in the firm is positively related to the real options investments at the firm level. We find that this agency issue can be mitigated by adopting appropriate corporate governance mechanisms such as long‐term incentives and institutional investors.     

两种测量大容量电容器的方法

电容器在电路中是具有多用途的原件,分别在电子技术和电力设备中起着不同的电路功能,结构和种类繁多,测量电容的方法有多种,现介绍利用双踪示波器测量电容器电容量的两种方法,一种是阻抗角法,另一种为幅值法,用以解决测量大电容器的电容量。     

RLC串/并联谐振电路的特性分析及应用

通过对RLC串/并联谐振电路的相关特性分析,明确了这些特性存在的理论条件。从品质因数的定义出发,重点研究了Q对谐振电路各方面的影响,最后简要介绍了RLC谐振电路在实际中的应用。     

Rethinking Money as an Institution of Capitalism and the Theory of Monetary Circulation: What Can Modern Heterodox Economists/Institutionalists Learn from Karl Polanyi?

Modern heterodox theories of money reject the neoclassical conception of money as primarily a medium to facilitate exchange. These heterodox theories of money all have as common starting point an analysis of credit-debt relations in which production is a central feature, with these economies organized along capitalistic design. The Keynesian-Marxian framework describing the process of monetary circulation, traditionally referred to as the theory of the monetary circuit (TMC), perhaps best represents this comprehensive vision. This broad TMC analytical framework is compatible with institutionalist theories of money that also point to the importance of credit-debt relations. The question, however, is whether this more unified heterodox theory of money, which describes sequentially monetary relations under capitalism, can be used to understand pre-capitalistic monetary institutions. By conceptualizing money as a means of payment rather than medium of exchange, Karl Polanyi’s analysis offers social scientists crucial insights to understanding monetary relations in all types of societies in which credit-debt relations have emerged historically.     

螺旋波纹波导回旋行波管色散特性仿真分析

对螺旋波纹波导回旋行波管的冷腔色散特性进行了研究,通过理论分析和数值计算,得到了螺旋波纹波导的冷腔色散方程和色散曲线,并分析了几何结构参数变化对其色散特性的影响。同时利用三维电磁仿真软件HFSS对螺旋波纹波导进行建模和计算。     

易燃易爆物流配送自动称量灌装秤气控线路的设计

对于一些易燃易爆的液体化工原料的称量和灌装，要求十分严格。本文针对易燃易爆品物流配送过程中称量灌装秤气控线路的设计，提出分析和探讨。