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31.
蔡元培先生认为,要培养自由美丽的人格,首先要通过军国民教育、实利主义、公民道德教育、世界观教育和美育来完成从现实世界到实体世界过渡的外向自由和内向自由的双重结合,同时实现"思想自由,兼容并包"的大学教育改革。现今德育也应该借鉴蔡元培先生的理念,重视"自由"在德育中的积极意义,在德育的实践中坚持"思想自由,兼容并包"的教育理念,结合德育的教育内容满足大学生的心理需求,使其主体性和个性得以积极发挥。 相似文献
32.
“霍山现象”中的民营企业研究 总被引:1,自引:0,他引:1
作为国家级贫困县的霍山县,其工业经济在短短的十几年间奇迹般地崛起,被经济学界称之为“霍山现象”、“霍山模式”。霍山民营企业对“霍山现象”的形成起关键性作用。本文通过对霍山民营企业的调查研究,分析了促进霍山民营企业成长的几个重要因素,并剖析了民营企业在投资环境、治理结构及融资等方面存在的问题,提出了进一步发展民营企业的对策建议。 相似文献
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34.
周尘 《商业经济(哈尔滨)》2008,(13):71-72
目前,在我国股票市场上一直存在着新股发行价低于上市价格的抑价现象,其主要原因是股市发行与交易市场参与者之间信息不对称。应加速完善上市公司信息披露机制,提高信息的真实性、及时性以及投资行为的理性化程度,借助信息和资金优势带动股票市场价格保持在合理且相对平稳的范围内。只有这样,股票市场价格才会更加清晰的反映出公司实际投资价值,发行价与上市价间的差距也会逐步降低。 相似文献
35.
In this paper, we make five contributions to the literature on information and entropy in generalized method of moments (GMM) estimation. First, we introduce the concept of the long run canonical correlations (LRCCs) between the true score vector and the moment function f(vt,θ0) and show that they provide a metric for the information contained in the population moment condition E[f(vt,θ0)]=0. Second, we show that the entropy of the limiting distribution of the GMM estimator can be written in terms of these LRCCs. Third, motivated by the above results, we introduce an information criterion based on this entropy that can be used as a basis for moment selection. Fourth, we introduce the concept of nearly redundant moment conditions and use it to explore the connection between redundancy and weak identification. Fifth, we analyse the behaviour of the aforementioned entropy-based moment selection method in two scenarios of interest; these scenarios are: (i) nonlinear dynamic models where the parameter vector is identified by all the combinations of moment conditions considered; (ii) linear static models where the parameter vector may be weakly identified for some of the combinations considered. The first of these contributions rests on a generalized information equality that is proved in the paper, and may be of interest in its own right. 相似文献
36.
We examine the multifractal scaling behavior and market efficiency of China’s clean energy stock indexes using an asymmetric multifractal detrended fluctuation analysis (A-MFDFA) and then investigate the tail correlation between this index and the crude oil market via an asymmetric multifractal detrended cross-correlation analysis (A-MFDCCA). First, we reveal that the overall, upward and downward trends of the clean energy stock indexes all have significant multifractal characteristics. The clean energy stock market is far from efficient regardless of whether the fluctuations are small or large. In addition, both upward and downward fluctuations exhibit considerable asymmetry. The significant gap between the downward and overall trends indicates that the downward trend following small-scale fluctuations implies weaker efficiency for investors. Furthermore,based on the sliding market deficiency measure (MDM),we find that the change in efficiency in the three trends significantly depends on the length of the window. In the short term, there is no significant efficiency difference among these three trends; however, in the long term, the asymmetry in the upward and downward trends has gradually increased,especially after December 2018. The results demonstrate that bear markets can offer considerably more opportunities for obtaining excess profits. Finally, we reveal that the cross-correlation between the trends of crude oil prices and low-carbon indexes exhibits significant multifractal characteristics. When the crude oil market is in a bull market or the low-carbon energy market is in a bear market, especially in a larger-scale fluctuation, investors should pay attention to the long-term influence of the counterparty market and carry out a hedging operation to avoid risks. 相似文献
37.
We study the question of which social choice functions from an abstract type space to a set of outcomes are truthful, i.e., implementable by truthful mechanisms, when utilities are quasi-linear. For convex domains, our main theorem characterizes truthful social choice functions as those satisfying two properties: local weak monotonicity and vortex-freeness. The first of these constrains the function values at any two sufficiently proximal points, while the second asserts that its line integrals around sufficiently small triangular loops must vanish.The characterization implies a local-to-global principle that allows one to deduce truthfulness of a function from its behavior on arbitrarily small neighborhoods of each point. Other consequences include a simple alternate derivation of the Saks–Yu Theorem that weak monotonicity characterizes truthfulness of functions having a convex domain and finite range, and a sufficient condition for constructing truthful functions by “stitching together” truthful subfunctions on different subsets of the domain. 相似文献
38.
中国法治建设进程中存在着法治建设表层化问题,表现为注重外部形式的法律条文和制度建设,轻视法治理念建设,这阻碍了法治建设的实质进展,笔者从文化、经济、政治三角度分析了法治建设表层化的原因,进而提出了克服法治建设表层化的具体途径。 相似文献
39.
The authors report on the construction of a new algorithm for the weak approximation of stochastic differential equations. In this algorithm, an ODE-valued random variable whose average approximates the solution of the given stochastic differential equation is constructed by using the notion of free Lie algebras. It is proved that the classical Runge–Kutta method for ODEs is directly applicable to the ODE drawn from the random variable. In a numerical experiment, this is applied to the problem of pricing Asian options under the Heston stochastic volatility model. Compared with some other methods, this algorithm is significantly faster. This research was partly supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (C), 15540110, 2003 and 18540113, 2006, the 21st century COE program at Graduate School of Mathematical Sciences, the University of Tokyo, and JSPS Core-to-Core Program 18005. 相似文献
40.
旅游并非自古就有,只有在市场经济发展到一定阶段才会产生。旅游现象表现为“经济外壳”和“文化内核”,由此导致经济和文化两类关系和现象。这些现象交叉、重叠、遮蔽并反映在社会综合现象中,从中揭示各种现象的内在联系、结构、形态。 相似文献