How does fiscal decentralization affect aggregate, national, and subnational government size?

Beyond conducting the usual regression analysis of the relationship between fiscal decentralization and aggregate government size (national and subnational combined), this paper makes the first attempt to examine how different fiscal decentralization measures affect the sizes of national and subnational (state and local combined) governments. An econometric analysis using panel data from 32 industrial and developing countries, 1980¨C1994, finds that (1) expenditure decentralization leads to smaller national governments, larger subnational governments, and larger aggregate governments; (2) revenue decentralization increases subnational governments by less than it reduces national governments, hence leads to smaller aggregate governments; and (3) vertical imbalance tends to increase the sizes of subnational, national, and aggregate governments.Fiscal decentralization, Size of government, Vertical imbalance, Borrowing constraints

Fiscal decentralization, revenue and expenditure assignments, and growth in China

Theory suggests that a close match between revenue and expenditure assignments at sub-national levels benefits allocative efficiency, and hence economic growth. That is, a convergence of revenue and expenditure assignments at sub-national levels of government should, according to the theory, be positively associated with a higher growth rate. In the case of China, this paper shows, divergence, rather than convergence, in revenue and expenditures at the sub-national level of government is associated with higher rates of growth. A panel dataset for 30 provinces in China is used to examine the relationship between fiscal decentralization and economic growth over two phases of fiscal decentralization in China: (1) 1979¨C1993 under the fiscal contract system, and (2) 1994¨C1999 under the tax assignment system. The seeming contradiction between the theory and evidence in the China case is reconciled by taking into account the institutional arrangements that prevailed during the two phases of fiscal decentralization, in particular the inconsistency between the assumptions of the theory of fiscal decentralization and the institutional reality of China.Fiscal decentralization, Economic growth, Revenue, Expenditure

Computational techniques in Turan problems

A Turan set system, T(n, I, k), is a k -uniform hypergraph on n points, such that any subset of / vertices contains at least one edge. The Turan number T{n, l, k) is the minimal number of edges in any Turan set system T(n,l,k). The known nontrivial values of Turan numbers are rare. Using the algorithm turexp for extending T(n, I, k) systems to 7(n+1, I, k) systems and procedures nauty for determining the automorphism group of a graph, the new Turan numbers 7(13, 4, 3), 7(11, 5, 3), 7(12, 5, 3), 7(13, 5, 3) are determined, a new lower bound for 7(14, 5, 3) is given, the Turan numbers 7(10, 4, 3), 7(11, 4, 3), 7(12, 4, 3) are confirmed to be the same as the previous unpublished results of other authors, and all minimal Turan T(n, 4, 3) (n \u3c 12), 7(n, 6, 5) (n \u3c 9), T(n, 5, 3) (n \u3c 13) are obtained

Theoretical and Experimental Analysis of a Randomized Algorithm for Sparse Fourier Transform Analysis

We analyze a sublinear RAlSFA (Randomized Algorithm for Sparse Fourier Analysis) that finds a near-optimal B-term Sparse Representation R for a given discrete signal S of length N, in time and space poly(B,log(N)), following the approach given in \cite{GGIMS}. Its time cost poly(log(N)) should be compared with the superlinear O(N log N) time requirement of the Fast Fourier Transform (FFT). A straightforward implementation of the RAlSFA, as presented in the theoretical paper \cite{GGIMS}, turns out to be very slow in practice. Our main result is a greatly improved and practical RAlSFA. We introduce several new ideas and techniques that speed up the algorithm. Both rigorous and heuristic arguments for parameter choices are presented. Our RAlSFA constructs, with probability at least 1-delta, a near-optimal B-term representation R in time poly(B)log(N)log(1/delta)/ epsilon^{2} log(M) such that ||S-R||^{2}<=(1+epsilon)||S-R_{opt}||^{2}. Furthermore, this RAlSFA implementation already beats the FFTW for not unreasonably large N. We extend the algorithm to higher dimensional cases both theoretically and numerically. The crossover point lies at N=70000 in one dimension, and at N=900 for data on a N*N grid in two dimensions for small B signals where there is noise.Comment: 21 pages, 8 figures, submitted to Journal of Computational Physic

Fiscal Decentralization and Peasants' Financial Burden in China

This paper sheds light on the heavy financial burden on peasants in China's fiscal decentralization system. Using a political economy framework, this paper explores the tax-farming nature of China's fiscally decentralized system and examines why the system incurs a particularly heavy financial burden on peasants. Specifically, it points out that a political hierarchy financed by a tax-farming system in China, fails to contain the exploitative behavior of local officials, which results in the expenditure devolution and revenue centralization within the hierarchy. Ultimately, peasants bear the brunt of the tax burden. As the financial pressure of excessive levies and fees reaches a perilous point, peasants are resorting to violent protests. Unless a fiscally decentralized system with horizontal accountability mechanisms evolves, the country's ability to sustain a centralized polity may become increasingly undermined. A case study of township finance is used to exemplify the exploitative nature of China's fiscal decentralization system.Fiscal Decentralization, Corruption, Financial Burden, China

“Wait and scan” management of patients with vestibular schwannoma and the relevance of non-contrast MRI in the follow-up

Vestibular schwannoma (VS) is a slow-growing benign neoplasm. There has been an evolution in the management of VS from active treatments (microsurgery and stereotactic radiotherapy) to conservative management (wait and scan). Regular MRI scanning is necessary to monitor tumor progression. Conservative management causes significantly less complications and offers a higher quality of life compared with active treatments. The mean growth rate of VS varies from 0.4 to 2.9 mm/year, and spontaneous shrinkage is observed in 3.8 percent of tumors during observation. If significant growth occurs, active treatment is considered. Significant growth is defined as an increase of at least 3 mm in the largest extrameatal diameter in any plane between the first and last available scans. The vestibulocochlear nerve is surrounded by cerebrospinal fluid, which provides natural contrast for MRI; thus, gadolinium may not be needed to detect VS. Specific sequences have high sensitivity, specificity, and accuracy for detection of progression. Hypointense signal in the ipsilateral inner ear fluid might be a useful sign to distinguish VS from meningioma. In this paper, we summarize the current status of research on conservative management and non-contrast MRI for the detection of VS.Peer reviewe

Research on the Commercialization of Shu Brocade

Shu brocade is an important part of Chinese traditional culture, and it is also the first of the “Four Famous Brocades” in my country. Shu brocade has long been not only a handicraft, but also a symbol of cultural commodities, which has been integrated into literary works throughout the ages, into our daily consumption, and even into the 5,000-year-old Chinese traditional culture. Many handicrafts were eventually abandoned by history because of the complexity of inheritance techniques or because they could not keep up with the trend of the times. However, Shu brocade has been passed down from generation to generation for more than two thousand years, from ancient times to modern times. This is in line with the huge cultural characteristics and Commodity value is inseparable