Numerical Study and Economy Analysis of Two Heated Crude Oil Pipelines Laid in One Ditch

In this paper,the transportation economy of two heated crude oil pipelines laid in one ditch is analyzed by taking into account the influence of operating temperature,interval between two pipelines,and distance between two heating stations on the heating energy consumption.To analyze the transportation economy,the two heated crude oil pipelines laid in one ditch are simulated under four operating conditions based on an unstructured finite volume method.Compared with laying two crude oil pipelines separately in two ditches,the results attest notably higher soil temperature,meaning reduced heat dissipation of each pipeline by laying two pipelines in one ditch.It is inferred that for the same desired oil temperature at the inlet of the next heating station,laying two pipelines in one ditch requires lower oil temperature at the outlet of heating station,indicating decreased energy cost at the heating station and improved transportation economy.Then economy analysis of four configurations of laying two pipelines in one ditch is performed.By comparing the results of four conditions,the interval between two pipelines of 1.2 m is found to save the energy most efficiently,which is as large as 26.6%compared with that of laying two pipelines in two separate ditches.In addition,narrowing the pipeline interval and extending the distance between heating stations is beneficial to save heating energy.This study is expected to provide valuable guidance for operation optimization of heated crude oil pipelines.

Analysis on China＇s Lottery Economy

From such aspects as fiscal and tax revenue, employment and consumption demand, this paper firstly analyzes the impacts that lottery produces to China＇s economy. On the basis of this analysis, it then probes into discussing the contributions that lottery makes to the development of the sports and welfare. Finally, by utilizing gray system model, a coherence analysis between lottery industry and China＇s macro-economy was made.

CO2 emission driving forces and corresponding mitigation strategies under low-carbon economy mode:evidence from China's Beijing-Tianjin-Hebei region

On account of the background of China's "new normal" characterized by slower economic growth, this paper analyses the low-carbon economy status quo in the Beijing-Tianjin-Hebei region and empirically investigates the relationship between carbon dioxide(CO_2) emissions and its various factors for China's Beijing-Tianjin-Hebei region using panel data econometric technique. We find evidence of existence of Environmental Kuznets Curve. Results also show that economic scale, industrial structure, and urbanization rate are crucial factors to promote CO_2emissions. However, technological progress, especially the domestic independent research and development, plays a key role in C0_2 emissions abatement. Next, we further analyze the correlation between each subregion and various factors according to Grey Relation Analysis. Thereby,our findings provide important implications for policymakers in air pollution control and C0_2 emissions reduction for this region.

Environmental input-output model and its analysis with a focus on the solid waste management sectors

An environmental input output model (EIOM) was introduced to the regional solid waste management sectors, which can reflect the direct and indirect relations between the environment and the regional economy development. Some details about how to use the EIOM was discussed. The EIOM was applied to the Changsha City in China. The example results indicate that much useful information related to the environment and the regional economy development can be gained from the solution of the EIOM. Thus, the EIOM can be used as a useful tool for the sustainable development planning including the solid waste management sectors.

A Measurement of the Contribution Made by Foreign Investment to Chinese Economy

The author uses the statistics from 1981 to 2002 to perform a logarithmic regression analysis on the contribution made by foreign investment to Chinese economy. The measurement shows that the following effects on Chinese economy are brought by large amount of foreign investment： 1） Foreign investment, as an important investment source, boosts the increase of the stock of production factors and improves the supplying potentials of Chinese economy. 2） The application of foreign investment speeds the rapid growth of the total production value and the increases the value of Chinese industry. 3） Foreign investment changes the employment structure of Chinese labor force. 4） The tax in China, to some extent, owes its growth to the adoption of foreign investment.

The political economy of results-based financing:the experience of the health system in Zimbabwe

Background:Since 2000,results based financing(RBF)has proliferated in health sectors in Africa in particular,including in fragile and conflict affected settings(FCAS)and there is a growing but still contested literature about its relevance and effectiveness.Less examined are the political economy factors behind the adoption of the RBF policy,as well as the shifts in influence and resources which RBF may bring about.In this article,we examine these two topics,focusing on Zimbabwe,which has rolled out RBF nationwide in the health system since 2011,with external support.Methods:The study uses an adapted political economy framework,integrating data from 40 semi-structured interviews with local,national and international experts in 2018 and thematic analysis of 60 policy documents covering the decade between 2008 and 2018.Results:Our findings highlight the role of donors in initiating the RBF policy,but also how the Zimbabwe health system was able to adapt the model to suit its particular circumstances-seeking to maintain a systemic approach,and avoiding fragmentation.Although Zimbabwe was highly resource dependent after the political-economic crisis of the 2000s,it retained managerial and professional capacity,which distinguishes it from many other FCAS settings.This active adaptation has engendered national ownership over time,despite initial resistance to the RBF model and despite the complexity of RBF,which creates dependence on external technical support.Adoption was also aided by ideological retro-fitting into an earlier government performance management policy.The main beneficiaries of RBF were frontline providers,who gained small but critical additional resources,but subject to high degrees of control and sanctions.Conclusions:This study highlights resource-seeking motivations for adopting RBF in some low and middle income settings,especially fragile ones,but also the potential for local health system actors to shape and adapt RBF to suit their needs in some circumstances.This means less structural disruption in the health system and it increases the likelihood of an integrated approach and sustainability.We highlight the mix of autonomy and control which RBF can bring for frontline providers and argue for clearer understanding of the role that RBF commonly plays in these settings.

THE RISK AND ECONOMY ANALYSIS OF ENERGY DISSIPATORS

According to the analysis results of risk,economy and practical experiences for many years,the paper demonstrates that the great economic benifits can be got by reducing the design flood standard of energy dissipators and that the reduction of design flood standard is significant for reducing project investment and speeding project construction.

China and India: A Tale of Two Economies

As China is emerging as an economic super power of global proportion, there is merit incomparing it to the performance of the Indian economy, particularly during its post reformera. In this article the author focuses on the two economies and analyses why China turnedout to be commendable economic success while India, despite having minor achievements,cannot be considered a comparable case. Although China started on its reform path from asomewhat lower economic level, it outperformed India by a wide margin. In all the measurableareas of economic performance, China measures far superior to India. The article makes aclose comparison and explains the reasons behind the lackluster performance of the Indiaeconomy. Delayed, poorly visualized, shallow and inadequately implemented reforms isonly one of the myriad of reasons behind Indian economy’s jaded and uninspiring show.There are several traditional non-economic idiosyncrasies that caused the Indian economyto under-perform.