Once invertibility for a causal TARMA series is defined and accompanied by conditions on the probability parameters of the model, all focus concentrates on the maximum likelihood estimators. Under the coexistence of e...Once invertibility for a causal TARMA series is defined and accompanied by conditions on the probability parameters of the model, all focus concentrates on the maximum likelihood estimators. Under the coexistence of essential causality and invertibility, the estimators are shown to be convergent to the real values and asymptotically obedient to the Gaussian distribution: their variance matrix identifies with a classic result. Some real-like examples are simulated and simplification attempts include the derivation of the non-parametric chi-square test extension for stationary TAR series.展开更多
This paper proposes an innovative procedure for designing efficient biomass-biofuel logistics networks(BBLNs).This procedure is based on the two-stage network data envelopment analysis(TSN-DEA)models that have been de...This paper proposes an innovative procedure for designing efficient biomass-biofuel logistics networks(BBLNs).This procedure is based on the two-stage network data envelopment analysis(TSN-DEA)models that have been developed to provide specific process guidance for the managers to improve the efficiency of the decision-making unit(DMU)with the TSN process.The crucial issue of the TSN-DEA is that the overall efficiency score depends on the DMUs under evaluation.Thus,the rankings for the DMUs generated by the TSN-DEA model are inconsistent.As a result,the TSN-DEA-based ranking methods are limited.The TSN-DEA’s inconsistency frequently makes it difficult for decision-makers to select the top-rated DMUs.We develop the transformed TSN(T-TSN)DEA method by applying the multi-criteria DEA model to overcome this issue.The proposed method transforms the DMUs with any number of inputs,intermediate measures,and outputs in the TSN process,through the multi-objective programming model with a minimax objective approach,into the DMUs with two inputs and one output in the single-stage network(SSN)process.Then,the well-known DEA methods for the SSN,such as the cross-efficiency and super-efficiency DEA methods,can be applied to evaluate and rank the transformed DMUs more consistently.We exhibit the applicability of the proposed approach for the BBLN design problem.A case study of South Carolina in the USA demonstrates that the proposed method performs well in identifying efficient BBLN schemes more consistently than the traditional TSN-DEA.展开更多
Making use of the data envelopment analysis （DEA） technique and taking undesirable fiscal phenomena into account, this paper comprehensively quantifies the public fnance performance of local governments in China dur...Making use of the data envelopment analysis （DEA） technique and taking undesirable fiscal phenomena into account, this paper comprehensively quantifies the public fnance performance of local governments in China during the course of fiscal decentralization reform. The introduction of undesirable fiscal outcomes into this assessment makes it possible to identify meaningful and informative characteristics of local public finance performance in China. When reforms are first implemented, local pubIic financial performance improves because undesirable fiscal phenomena have not yet become too serious. The tax sharing system reform did not work well in its early stages, and negatively impacted public expenditure e3ficiency. The reform started to play a substantial role between 2001 and 2005, when local governments experienced better public finance performance. Corresponding to the deterioration of the financial sector in recent years, local public financial performance worsened after 2007. Further reform of the current fiscal and taxation system is necessary in China, to ensure a brighter future for the nation.展开更多
文摘Once invertibility for a causal TARMA series is defined and accompanied by conditions on the probability parameters of the model, all focus concentrates on the maximum likelihood estimators. Under the coexistence of essential causality and invertibility, the estimators are shown to be convergent to the real values and asymptotically obedient to the Gaussian distribution: their variance matrix identifies with a classic result. Some real-like examples are simulated and simplification attempts include the derivation of the non-parametric chi-square test extension for stationary TAR series.
文摘This paper proposes an innovative procedure for designing efficient biomass-biofuel logistics networks(BBLNs).This procedure is based on the two-stage network data envelopment analysis(TSN-DEA)models that have been developed to provide specific process guidance for the managers to improve the efficiency of the decision-making unit(DMU)with the TSN process.The crucial issue of the TSN-DEA is that the overall efficiency score depends on the DMUs under evaluation.Thus,the rankings for the DMUs generated by the TSN-DEA model are inconsistent.As a result,the TSN-DEA-based ranking methods are limited.The TSN-DEA’s inconsistency frequently makes it difficult for decision-makers to select the top-rated DMUs.We develop the transformed TSN(T-TSN)DEA method by applying the multi-criteria DEA model to overcome this issue.The proposed method transforms the DMUs with any number of inputs,intermediate measures,and outputs in the TSN process,through the multi-objective programming model with a minimax objective approach,into the DMUs with two inputs and one output in the single-stage network(SSN)process.Then,the well-known DEA methods for the SSN,such as the cross-efficiency and super-efficiency DEA methods,can be applied to evaluate and rank the transformed DMUs more consistently.We exhibit the applicability of the proposed approach for the BBLN design problem.A case study of South Carolina in the USA demonstrates that the proposed method performs well in identifying efficient BBLN schemes more consistently than the traditional TSN-DEA.
基金sponsored by Project 985(2011SHKXZD001)Zhuo-Shi Talent Plan at Fudan Universitythe Shanghai Leading Academic Disciplines Project(B101)
文摘Making use of the data envelopment analysis （DEA） technique and taking undesirable fiscal phenomena into account, this paper comprehensively quantifies the public fnance performance of local governments in China during the course of fiscal decentralization reform. The introduction of undesirable fiscal outcomes into this assessment makes it possible to identify meaningful and informative characteristics of local public finance performance in China. When reforms are first implemented, local pubIic financial performance improves because undesirable fiscal phenomena have not yet become too serious. The tax sharing system reform did not work well in its early stages, and negatively impacted public expenditure e3ficiency. The reform started to play a substantial role between 2001 and 2005, when local governments experienced better public finance performance. Corresponding to the deterioration of the financial sector in recent years, local public financial performance worsened after 2007. Further reform of the current fiscal and taxation system is necessary in China, to ensure a brighter future for the nation.
