全球一体化:世界经济运行的主旋律

全球一体化世界经济运行的主旋律赵丽娜二战后，特别是近２０年来，世界经济发展到了一个新阶段，即全球化阶段，其特征一是各国之间已不是仅限于发展流通领域的关系，而且通过相互直接投资，建立起更加牢固和紧密的关系；二是各国之间的经济贸易关系已不仅仅是相互交流...

提高循环流化床锅炉经济运行的措施

中盐新东化工发展有限公司分别于2004年和2007年上了两台75T/H循环硫化床锅炉,运行至今出现两次结焦事故,经常性爆管事故,一次锅炉进水偏酸性事故,还有两次锅炉内部浇注料脱落以及2号锅炉出力不足,导致我厂循环硫化床锅炉热效率低和不能稳定连续运行。这些问题的存在是因为人员培训不够,燃烧控制不稳定,造成热效率不高,厂用电率和故障率高,经济性,可靠性差,停炉事故频发,本文着重介绍:改进运行控制、完善设备、提高运行人员业务水平,提高循环流化床锅炉热效率的行之有效的具体措施,以供同行参考。

通信枢纽楼能耗运行分析研究

如何在业务量不断增加,电源容量无法扩容的情况下,更好地解决供电能力紧张、机房装机位不足、机房散热等问题,是本论文的研究意义所在。本文通过对S省通信枢纽楼能耗运行分析,给出以上难点的合理化建议和建设指导原则。

Application of thermal parameter soft sensor in power plant

In order to solve the problem of the invalidation of thermal parameters andoptimal running, we present an efficient soft sensor approach based on sparse online Gaussianprocesses( GP), which is based on a combination of a Bayesian online algorithm together with asequential construction of a relevant subsample of the data to specify the prediction of the GPmodel. By an appealing parameterization and projection techniques that use the reproducing kernelHubert space (RKHS) norm, recursions for the effective parameters and a sparse Gaussianapproximation of the posterior process are obtained. The sparse representation of Gaussian processesmakes the GP-based soft sensor practical in a large dataset and real-time application. And theproposed thermalparameter soft sensor is of importance for the economical running of the powerplant.

借鉴各国经验 抑制通货膨胀

我国国民经济的发展,取得了举世瞩目的成就。同时,由于改革前积累下来的隐性通货膨胀逐步释放,以及经济体制的转换和经济高速增长所伴生的各种矛盾和问题更加突出,1980—1981年,1985—1986年,1988—1989年,1993—1994年连续四次出现明显的通货膨胀,影响了经济发展、改革的深入及社会的安定。深入研究通货膨胀问题。

保重点 增措施 全面完成今年各项任务——李大强副省长在全省地市州委书记会议上的讲话(摘要)

一、关于当前我省形势的基本估价 今年以来,按照省委、省政府的部署,全省各级党委、政府认真贯彻中央“抓住机遇、深化改革、扩大开放、促进发展、保持稳定”的二十字方针,各项主要工作目标明确,重点突出,成效显著。从前七个月经济运行的情况看,有三个明显特征: 一是速度高。上半年,全省乡及级以上工业总产值比去年同期增长21.3％,比全国平均水平高2.5个百分点。这是我省在去年高基数基础上的持续增长。 二是投入大。

Is changing footstrike pattern beneficial to runners?

Some researchers, running instructors, and coaches have suggested that the "optimal" footstrike pattern to improve performance and reduce running injuries is to land using a mid-or forefoot strike. Thus, it has been recommended that runners who use a rearfoot strike would benefit by changing their footstrike although there is little scientific evidence for suggesting such a change. The rearfoot strike is clearly more prevalent. The major reasons often given for changing to a mid-or forefoot strike are(1) it is more economical;(2) there is a reduction in the impact peak and loading rate of the vertical component of the ground reaction force; and(3) there is a reduction in the risk of a running-related injuries. In this paper,we critique these 3 suggestions and provide alternate explanations that may provide contradictory evidence for altering one's footstrike pattern.We have concluded, based on examining the research literature, that changing to a mid-or forefoot strike does not improve running economy, does not eliminate an impact at the foot-ground contact, and does not reduce the risk of running-related injuries.

PV Power Short-Term Forecasting Model Based on the Data Gathered from Monitoring Network

The degree of accuracy in predicting the photovoltaic power generation plays an important role in appropriate allocations and economic operations of the power plants based on the generating capacity data gathered from the geographically separated photovoltaic plants through network. In this paper, a forecasting model is designed with an optimization algorithm which is developed with the combination of PSO （Particle Swarm Optimization） and BP （Back Propagation） neural network. The proposed model is further validated and the experiment results show that the predication model assures the prediction accuracy regardless the day type transitions and other relevant factors, in the proposed model, the prediction error rate is worth less than 20% in all different climatic conditions and most of the prediction error accuracy is less than 10% in sunny day, and whose precision satisfies the management requirements of the power grid companies, reflecting the significance of the proposed model in engineering applications.

An International Comparative Analysis on China's Economic Growth and the Convergence in Energy Intensity Gap and Its Economic Mechanism

In this paper,the authors have empirically analyzed the convergence in per capita GDP gap and the convergence in the variation of energy intensity with respect to the change of per capita GDP between China and eight developed countries.Then,the authors run a regression on the impact of decisive factors of economic growth on energy intensity and its change,so as to find out the economic mechanism of energy intensity gap changing with respect to the variation of economic growth.This study concludes that:First,there is a convergence in per capita GDP gap between China and the eight developed countries.With the convergence in per capita GDP gap,the energy intensity gap between China and eight different countries also converge,and the convergence rate of the latter is faster than that of the former,i.e.if the per capita GDP gap between China and the eight developed countries decreases by 1%,the energy intensity gap between them will correspondingly decrease by 1.552%.Second,the energy intensity decreases with the improvement of industrial structure,the rising of energy prices,the advances of technology,and the expansion of investment in fixed assets,and it slightly increases with the increase of FDI.Third,the energy intensity gap between China and eight developed countries narrows with the lessening of the difference in fixed assets investment,energy prices,and technological progress between China and eight developed countries,yet increases with the narrowing of the difference in FDI,and has no significant correlation with the difference in industrial structure.Fourth,the narrowing of difference in per capita GDP between China and the eight developed countries can result in the lessening of energy intensity gap,whose economic mechanism is that the decisive factors,such as difference in investment,technology,and the competition mechanism of prices,which can determine the difference in economic growth,can significantly affect the energy intensity gap.

Evaluation of Nuclear Fuel Centerline Temperature Using New UO2 Thermal Conductivity Models

The nuclear industry needs of prediction of behavior and life-time, for a wide range of normal, off-normal and accident conditions for safe and economic operation. Among different thermo-mechanical properties that can be predictable, the knowledge on the radial temperature distribution of the UO2 （uranium dioxide） nuclear fuel during the operation of nuclear reactors is essential for safety as different mechanical and thermal-hydraulic thresholds should be respected. One of the attributes of the Brazilian CNEN （Nuclear Energy Commission） is to assess the performance of the fuel rods used in these reactors in high-bumup regimes. The effective removal of the heat generated in the fuel rods constitutes one of the primary points to consider in the design of nuclear reactors. One of the important physical parameters in the study of heat conduction from the nuclear fuel to the coolant in a PWR （pressurized water reactor） is its thermal conductivity. It is therefore desirable that the empirical models, updated for the calculation of thermal conductivity in the fuel region be developed from new sets of experimental data from the irradiated fuel rods in controlled environments This paper presents the obtained results of implementing of a new model for thermal conductivity of the UO2 in the FRAPCON code.

The relationship between steeplechase hurdle economy, mechanics, and performance

Background： Research surrounding the steeplechase is scarce, with most research focusing primarily on how biomechanical factors relate to maintaining running speed while crossing barriers. One area that has not been well explored is the relationship between biomechanical factors and hurdling economy. The purpose of this study was to investigate how pel：formance times and biomechanical variables relate to hurdling economy during the steeplechase. Methods： This was accomplished by measuring running economy of collegiate and professional steeplechasers while rmming with and without hurdles. Biomechanical measures of approach velocity, takeoff distance, clearance height, and lead knee extension while hurdling, as well as steeplechase performance times were correlated to a ratio of running economy with and without hurdles. Results： While oxygen uptake was 2.6% greater for the laps requiring five barriers, there was no correlation between steeplechase performance time and the ratio of running economy during the hurdle and non-hurdle laps. Results also indicated no correlation between the aforementioned biomechanical variables and ratio of running economy during the hurdle and non-hurdle laps. Conclusion： Increasing approach velocity did not negatively affect running economy. Increased approach velocity is a benefit for maintenance of race pace, but does not hurt economy of movement.

Performance Evaluation of Land Use Regulation

This article makes a quantitative study on economic performance of arable land protection and land use regulation with dummy variable model.It is shown that land use regulation is favorable for economic growth and protection of arable land and that there are still some problems in the implementation of land use regulation.Thus,it puts forward corresponding suggestion.

The Efficiency of Non-repayable Funding Against Crisis Effects in Romania

The current economical crisis pointed out the gaps and the weak development of the Romanian economical system. If we were to compare the economy of a country to the human body then we would realize that constant and massive loss of ＂blood＂ may eventually lead to collapse of the economical system, which require Romania to speed up financial ＂transfusions＂. In these conditions, the most accessible and inexpensive source of funding is the non-repayable funding that Romanian economy can acquire by the year of 2013. In this paper we analyze the evolution of non-repayable funds allocated to Romania, in terms of those funds for the approved projects （their implementation has not yet started） but also in terms of those contracted projects or in the process of running （in fact representing ＂the necessary＂ amount of money that the Romanian economy needs）. The first part of the paper contains an overview of the situation about the requiring and the absorption of non-repayable funding since 2007 （officially since the crisis emerged in the U.S.） to present, also making an analysis of the influence they had on the Romanian economy. We take into account in this analysis that the effects of the crisis in Romania began to be felt in the second half of 2008, economical politics against crisis were not taken into accounted by this date. In this analysis we started from the assumption that one anti-crisis policy, taken into account by public decision members in Romania, is to increase efficiency and absorption of funds by raising the capacity of the Romanian economical environment for the implementation （and not only the winning ） of these funds. The second part of the paper contains an econometrieal development model which highlights the influence of changing the interest rates and exchange rate on the rate of contracting projects during January 2007-March 2010. The Analysis of the results emphasizes the stronger influence of the changing rate on the approved contracting projects compared with the changing influence of the reference interest rate. Following the results of the analysis we highlight the main reasons for which this economical policy of attracting and using outstanding funding represents until now, a failure more than a success. Also we present these several solutions to increase the volume of financial ＂transfusion＂ with a direct impact on the Romanian economy, arguing that such measures cannot be implemented without real political will from decision-makers in Romania.

Analysis on the development of e-commerce strategy in tourism enterprises

Since the development of the market economy in our country, the information technology has a very far-reaching impact on development, in the process of social and economic operation,, different departments made its original operating mechanism changed according to their characteristics. However, for the tourism industry, the rapid development of the tourism industry has made the structure of the tourism industry restructure, the wide application of tourism e-commerce is one of the most typical performance. Tourism industry has the characteristics of the application of electronic commerce. Such as remote service, multi volume, low transaction amount and so on, the application of information technology in the tourism industry has led to the rapid development of tourism e-commerce, at the same time, it had changed the competition structure among the tourism enterprise. Seen from the current situation of e-conmaerce in China, there are still a lot of deficiencies and shortcomings in the international tourism industry. Based on the goal of China＇ s tourism development, carry out the development of tourism e-commerce is the first priority of the tourism industry.

Financial Education and the Evaluation of Financial Education Effectiveness

Nowadays, most people＇ s financial literacy is not high enough in face with the rapid development of economic situation.And currently the popularity of financial education is in a state of scarcity.Thus many countries have taken measures to make financial education more effective. Financial education can not only help financial consumers make wise choice, but also beneficial to the smooth operation of market economy.To some degree, it can also avoid financial crisis.This article introduces the content of financial education and the basic situation of financial education in some developed countries in the first place, and then describes the evaluation of its effectives to raise people＇ s awareness of financial education and to emphasize the necessity of the evaluation of its effectiveness.

Travel modal choice analysis for traffic corridors based on decision-theoretic approaches

The rapid development of multimodal transportation system prompts travellers to choose multiple transportation modes, such as private vehicles or taxi, transit(subways or buses), or park-and-ride combinations for urban trips. Traffic corridor is a major scenario that supports travellers to commute from suburban residential areas to central working areas. Studying their modal choice behaviour is receiving more and more interests. On one hand, it will guide the travellers to rationally choose their most economic and beneficial mode for urban trips. On the other hand, it will help traffic operators to make more appropriate policies to enhance the share of public transit in order to alleviate the traffic congestion and produce more economic and social benefits. To analyze the travel modal choice, a generalized cost model for three typical modes is first established to evaluate each different travel alternative. Then, random utility theory(RUT) and decision field theory(DFT) are introduced to describe the decision-making process how travellers make their mode choices. Further, some important factors that may influence the modal choice behaviour are discussed as well. To test the feasibility of the proposed model, a field test in Beijing was conducted to collect the real-time data and estimate the model parameters. The improvements in the test results and analysis show new advances in the development of travel mode choice on multimodal transportation networks.

Legal and Economic Aspects of the Operation of Cooperatives in Polish Agriculture

The article presents the legal and economic issues connected with the formation and operation of Polish agricultural cooperatives. Additionally, it shows a brief history of cooperative development on Polish lands and statistical data on agriculture and cooperatives. Most attention is given to dairy cooperatives, cooperative groups of agricultural producers and agricultural production cooperatives. These types of cooperatives are the most popular in Polish agriculture. The fundamental law regulating the issue of cooperatives in Poland is the Cooperative Law Act of September 16, 1982. Other laws, however, also have a big influence on the business activity of agricultural cooperatives, especially the EU legal regulations. Poland membership in the European Union has created new possibilities of development for the cooperative movement.

Analysis on the Effect of Asymmetric Information on Product Supply Chain and Pricing

Along with the vigorous development of the markel economy, the transactions in the market are also increasingly frequent. In all kinds of market transactions, there are more or less inIbrmation asynunetry phenomena. Asynmaetric information makes supply chain unable to give a real reaction to the relationship between market supply and demand, and the personnel in the channels of supply chain are unable to make the optimal pricing, so that the overall profits are affected. Therefore, asymmetric information should be controlled within the normal range, for the purpose of ensuring the normal operation and healthy development of the market transactions.

Economy of Energy during Refrigerating Machine Operation

Idealized cycles of refrigerating machines with adiabatic and isothermal compression of refrigerant vapor were investigated. Energetic characteristics of cycles： specific mass and volume cooling capacity q0 and qv, work of compression 1, refrigerating coefficient of performance e and power N for drive of compressor were compared. These characteristics were calculated for eight refrigerants at temperature of their condensation 30 ℃ and temperatures of boiling -15℃ and -30 ℃. The calculations show that the use of isothermal compression of refrigerant vapor ensures economy of energy during refrigerating machine operation.