支持向量机优化的克里金插值算法及其海洋资料对比试验

针对常规克里金插值方法中变异函数为有限确定函数,难以准确刻画实际数据分布(特别是复杂要素资料的空间结构)的不足,基于最小二乘支持向量机从实际资料场中拟合重构变异函数的研究思想,提出了一种改进的插值方法——支持向量机—克里金插值算法(SVM-Kriging)。采用常规的克里金方法和支持向量机—克里金插值方法(SVM-Kriging)进行插值试验和对比分析,结果表明:支持向量机—克里金方法(SVM-Kriging)的变异函数源自实际的数据场,它克服了常规克里金插值对变异函数选择的依赖性以及变异函数选择的主观性和人为性,表现出较好的针对性和客观性,较为有效地改善了插值效果。

创业板公司上市前过度投资的动因分析

本文以创业板公司上市前过度投资为研究内容,认为创业板公司上市前股权结构具有"一股独大"的特点,创业者、所有者与经营者三者相统一,追求长期利益的最大化,不太重视短期利益。在此基础上,追求规模效应、追求高的市场占有率、追求较高的营业收入是创业板公司上市前过度投资的内在动因,而银行等金融机构愿意为创业板公司投资提供资金支持是创业板公司上市前过度投资的外在推动因素。

Tribological properties and wear prediction model of TiC particles reinforced Ni-base alloy composite coatings

TiC particles reinforced Ni-based alloy composite coatings were prepared on 7005 aluminum alloy by plasma spray. The effects of load, speed and temperature on the tribological behavior and mechanisms of the composite coatings under dry friction were researched. The wear prediction model of the composite coatings was established based on the least square support vector machine (LS-SVM). The results show that the composite coatings exhibit smaller friction coefficients and wear losses than the Ni-based alloy coatings under different friction conditions. The predicting time of the LS-SVM model is only 12.93%of that of the BP-ANN model, and the predicting accuracies on friction coefficients and wear losses of the former are increased by 58.74%and 41.87%compared with the latter. The LS-SVM model can effectively predict the tribological behavior of the TiCP/Ni-base alloy composite coatings under dry friction.

Practice and Research Progress on Ecosystem Conservation in Transboundary Areas

Many ecosystems extend across national or political boundaries. The consistent and effective protection of these ecosystems in transboundary areas(ETAs) is an important global research focus. Previous research on the protection of such areas can be categorized into seven themes: 1) ecological conservation of a single ETA; 2) investigation of the effects of a single conservation measure on a specific ETA; 3) determination of species-level effects due to ETA conservation; 4) comparison of the same protection measures between different ETAs; 5) introduction of a single conservation measure to a specific ETA; 6) understanding the relationship between conservation and sustainable development; and 7) generalization across multiple ETA conservation cases. The protection of ETAs involves various considerations, including funding support, demand and will for collaboration, community and public participation, historical and cultural factors, political backgrounds, uniqueness of biological resources, formulation of laws and regulations, founding of specialized administrative departments, non-governmental organizations, and fairness. Here, we briefly explain the research themes and considerations related to ETA conservation. The most important finding is that most major research themes do not focus on the challenges of ETA conservation. We use two nature reserves located between China and North Korea as examples to identify specific ways to improve ETA conservation on Changbai Mountains. The efficiency of ETA administration still remains low. The study of ETA conservation should focus on concrete regional information and aim to improve existing measures through the accumulation of experience.

Have the Private Benefits in Italian Firms Decreased？

The topic of the paper is the estimate of the benefit of control, according to the Barclay and Holderness method. The reference system of this research is Italy, given that the empirical evidence of the past which had underlined private benefits particularly high among Italian companies and the reference period is 1999-2007. The idea of this research is to demonstrate that, since the Legislative Decree No. 58 of February 24, 1998 （Consolidated Law on Finance, henceforth Consolidated Law）, which has significantly changed the protection of minority shareholders, in Italian, the intensity of private benefits has on average declined sharply. To this end, considering the results of the empirical researches on periods pre-1998 and at the turn of the Consolidated Law, the paper provides evidence that the improvement of minority shareholder protection already shown by these researches is further accentuated over the years, because of the effects that the new regulatory framework has produced. In fact, the basic assumption is that the important laws, as Consolidate Law, require several years to produce the desired results in full. This idea is supported by the findings of research that show an average percentage of private benefits dropped to five percent of the capital. Hence, the investigation is extended to the demonstration of comparability of this estimation with other estimations quoted in literature, verifying the statistical significance of the correlations between the measures estimated and the variables considered as determinants in much of the literature.

Artificial intelligence model of complicated flow behaviors for Ti-13Nb-13Zr alloy and relevant applications

The comprehensive nonlinear flow behaviors of a ductile alloy play a significant role in the numerical analysis of its forming process. The accurate characterization of as-forged Ti-13 Nb-13 Zr alloy was conducted by an improved intelligent algorithm, GA-SVR, the combination of genetic algorithm(GA) and support vector regression(SVR). The GA-SVR model learns from a training dataset and then is verified by a test dataset. As for the generalization ability of the solved GA-SVR model, no matter in β phase temperature range or(α+β) phase temperature range, the correlation coefficient R-values are always larger than 0.9999, and the AARE-values are always lower than 0.18%. The solved GA-SVR model accurately tracks the highly-nonlinear flow behaviors of Ti-13 Nb-13 Zr alloy. The stress-strain data expanded by this model are input into finite element solver, and the computation accuracy is improved.

Analysis of fund gap on enterprise worker＇ s basic endowment insurance in Hebei province

Using actuarial techniques, the study estimates the fired gap of pooling account and individual account respectively on on enterprise worker＇ s basic endowment insurance in Hebei province. And based on the estimation, the study puts forward four policy suggestions： expand the coverage of the pension scheme; revised the number of months oft he annuities; increase the level of interest; improve financial support.

Non-contradiction The Main Way of Progress of Professional Interwar Magazines in Oltenia

The study finds that, for Romania, the period 1920-1939 is one without major contradictions. In ＂neutrosophy＂ of renowed American professor F. Smarandache＇s terms, the interwar period was, in Romania, a ＂neutral＂ period. As mediating operators, professional journals reflected the atmosphere of relative tranquility and social peace. From the qualitative analysis of their media discourse, we can see three elements that： （1） the professional journals of Oltenia, as media tools for teachers, priests and folklore （folklorist）, or music enthusiasts （music lovers）, were loyal to their financial supporters; （2） although they served oblique and opposition interests, the communication professional operators have generally not emphasized, perpetuated or generated conflicts, disputes and misunderstandings; and （3） social attitudes promoted by professional magazines in Oltenia was a beneficial, objective one of better understanding and neutrality. The conclusion is that, despite the axiom that progress is generated by contradiction, it shows that professional journals in Oltenia, during 1920-1939, even in the absence of contradictions, namely under neutrality, there have been major advances.

Key R&D activities for development of new types of wrought magnesium alloys in China

Many researchers in China are actively engaged in the development of new types of wrought magnesium alloys with low cost or with high-performances and novel plastic processing technologies.The research activities are funded primarily through four government-supported programs:the Key Technologies R&D Program of China,the National Basic Research Program of China,the National High-tech R&D Program of China,and the National Natural Science Foundation of China.The key R&D activities for the development of new wrought magnesium alloys in China are reviewed,and typical properties of some new alloys are summarized. More attentions are paid to high-strength wrought magnesium alloys and high-plasticity wrought magnesium alloys.Some novel plastic processing technologies,emerging in recent years,which aim to control deformation texture and to improve plasticity and formability especially at room temperature,are also introduced.

Research on financial support of the new energy industry

As it is known to all, the new energy industry plays an important in the economic transformation and structure adjustment of our country. The government attaches great importance to the development of the new energy industry. Particularly for the developing countries, to achieve rapid development require a lot of capital. However, there are some problems with finance in the development of the new energy industry. Based on the analysis, this paper puts forward some countermeasures.

Research on Financial Support of New Countryside Construction in China

The cpc＇s 13th Five-Year comprehensive plan put forward a major historic task of building a new socialist countryside. This is the comprehensive implementation of urban and rural development to increase industrial agriculture, move the city to support the countryside, accelerate urbanization and narrow the gap between urban and rural areas. To solve the ＂three rural issues＂, the comprehensive construction ofa well-offsociety, has a very important strategic role to ease the contradiction of China＇s rural and urban ecnomic structure. In the process of building a new socialist countryside, the financial policy, as an important means ofmacroeconomic regulation and control, should play a leading role in solving the effective allocation ＆funds. Due to various factors affected by the current supply of rural financial market constraints, system defects and environmental constraints, there is a large gap between the level of the existing rural financial services and the requirements of the new rural construction which is to be improved urgently.

Estimation of wear performance of AZ91 alloy under dry sliding conditions using machine learning methods

The wear behavior of AZ91 alloy was investigated by considering different parameters,such as load(10−50 N),sliding speed(160−220 mm/s)and sliding distance(250−1000 m).It was found that wear volume loss increased as load increased for all sliding distances and some sliding speeds.For sliding speed of 220 mm/s and sliding distance of 1000 m,the wear volume losses under loads of 10,20,30,40 and 50 N were calculated to be 15.0,19.0,24.3,33.9 and 37.4 mm3,respectively.Worn surfaces show that abrasion and oxidation were present at a load of 10 N,which changes into delamination at a load of 50 N.ANOVA results show that the contributions of load,sliding distance and sliding speed were 12.99%,83.04%and 3.97%,respectively.The artificial neural networks(ANN),support vector regressor(SVR)and random forest(RF)methods were applied for the prediction of wear volume loss of AZ91 alloy.The correlation coefficient(R2)values of SVR,RF and ANN for the test were 0.9245,0.9800 and 0.9845,respectively.Thus,the ANN model has promising results for the prediction of wear performance of AZ91 alloy.

Investor＇s Portfolio Allocation by Financial Asset Classes Using Fuzzy Logic-Based Approach in Decision Support System

The paper present the fuzzy logic expert system called MADSYS for an investor＇s portfolio allocation by financial asset classes. MADSYS system will be used in the interface agent （agents） of multi-agent investment management information system. One of the principal tasks of the multi-agent system is to help an investor to make investment decisions and to provide appropriate investment proposals according to the investor＇s profile. From MADSYS depends a lot of things, namely the multi-agent investment management information system accuracy, proposed investment decisions, the right portfolio allocation of financial assets, reliability and investor satisfaction. The usage of MADSYS system in the multi-agent system makes it more intellectual, i.e. the system will be able to adjust automatically to the changing of investor profile. The MADSYS system may be tried online at the following address：www.sprendimutechnologij os.lt/webapp.

The development and practice of starting businesses guiding system construction of students

The impact of the financial crisis exacerbated the students＇ employment situation, and the current situation of college students＇ entrepreneurial activities is worrying, which urgently need a systematic support program to be support and guide to the main business college. Based on the analysis of current situation and problems, this paper tries to build a entrepreneurial support system of contemporary college students as core, of tripartite coordinating community, university and government as basis to promote the healthy and sustainable development of entrepreneurial activities for the ultimate purpose of the entrepreneurial support system, to promote the healthy and sustainable development of entrepreneurial activities.

FORECASTING NIKKEI 225 INDEX WITH SUPPORT VECTOR MACHINE

Support Vector Machine (SVM) is a very specific type of learning algorithms characterized by the capacity control of the decision function, the use of the kernel functions and the sparsity of the solution. In this paper, we investigate the predictability of financial movement direction with SVM by forecasting the weekly movement direction of NIKKEI 225 index. To evaluate the forecasting ability of SVM, we compare the perfor-mance with those of Linear Discriminant Analysis, Quadratic Discriminant Analysis and Elman Backpropagation Neural Networks. The experiment results show that SVM outperforms other classification methods. Furthermore, we propose a combining model by integrating SVM with other classification methods. The combining model performs the best among the forecasting methods.

INTELLIGENT EARLY-WARNING SUPPORT SYSTEM FOR ENTERPRISE FINANCIAL CRISIS BASED ON CASE-BASED REASONING

Case-based reasoning （CBR） is an important reasoning technique of expert system. In this paper, the authors introduce CBR to intelligent early-warning support system, which could warn quantitatively for enterprise financial crisis and could warn qualitatively by expert＇s knowledge and experience. Furthermore, genetic algorithm is applied to case-based reasoning in CBR-IEWSS, which improves accuracy and efficiency of case retrieval. Last, the structure of CBR-IEWSS is given.