Resonances of the SD oscillator due to the discontinuous phase

Resonance phenomena of a harmonically excited system with mul-tiple potential well play an important role in nonlinear dynamics research.In this paper, we investigate the resonant behaviours of a discontinuous dynamical system with double well potential derived from the SD oscillator to gain better understanding of the transition of resonance mechanism. Firstly,the time dependent Hamiltonian is obtained for a Duffing type discontinuous system modelling snap-through buckling. This system comprises two subsystems connected at x = 0, for which the system is discontinuous. We constructa series of generating functions and canonical transformations to obtain the canonical form of the system to investigate the complex resonant behavioursof the system. Furthermore, we introduce a composed winding number to explore complex resonant phenomena. The formulation for resonant phenomena given in this paper generalizes the formulation of n Omega0 = m Omega used in the regular perturbation theory, where n and m are relative prime integers, Omega 0 and Omega are the natural frequency and external frequencies respectively. Understanding the resonant behaviour of the SD oscillator at the discontinuousphase enables us to further reveal the vibrational energy transfer mechanism between smooth and discontinuous nonlinear dynamical system

Growing out of poverty: trends and patterns of urban poverty in China 1988–2002

This paper estimates trends in absolute poverty in urban China from 1988 to 2002 using the Chinese Household Income Project (CHIP) surveys. Poverty incidence curves are plotted, showing that poverty has fallen markedly during the period regardless of the exact location of the poverty line. Income inequality rose from 1988 to 1995 but has been fairly constant thereafter. Models of the determination of income and poverty reveal widening differentials by education, sex and party membership. Income from government anti-poverty programs has little impact on poverty, which has fallen almost entirely due to overall economic growth rather than redistribution.poverty, inequality, economic growth, welfare, public policy, China

Growing out of Poverty: Trends and Patterns of Urban Poverty in China 1988–2002

This paper estimates trends in absolute poverty in urban China from 1988 to 2002 using the Chinese Household Income Project (CHIP) surveys. Poverty incidence curves are plotted, showing that poverty has fallen markedly during the period regardless of the exact location of the poverty line. Income inequality rose from 1988 to 1995 but has been fairly constant thereafter. Models of the determination of income and poverty reveal widening differentials by education, sex and party membership. Income from government anti-poverty programs has little impact on poverty, which has fallen almost entirely due to overall economic growth rather than redistribution.poverty, inequality, economic growth, welfare, public policy, China

Bifurcation and dynamic response analysis of rotating blade excited by upstream vortices

Acknowledgements The authors acknowledge the projects supported by the National Basic Research Program of China (973 Project)(No. 2015CB057405) and the National Natural Science Foundation of China (No. 11372082) and the State Scholarship Fund of CSC. DW thanks for the hospitality of the University of Aberdeen.Peer reviewedPostprin

The Golden Age of Oligarchy? Institutional Constraints and Leadership Discretion in Chinaís Cadre Management System.

Many authoritarian regimes in the modern era vest power in a collective governing body to prevent the emergence of personalist dictatorship. In these regimes, the maintenance of cohesion and unity among the ruling oligarchs is of first-order importance for the long-term resilience of authoritarianism. This dissertation suggests a typology of authoritarian rule based on the distribution of power among the first tier elites and their interaction with second tier followers. The specific institutional formula adopted derives in part from the regime’s attempts to cope with three common threats to oligarchic rule: personalization, demagoguery, and stagnation. I apply this analytic framework to contemporary China, arguing that the institutional arrangements in the CCP polity combine personalistic and collective features in first-tier interaction while ruling out reciprocal accountability between the two tiers. On the basis of this characterization, I put forward several observable implications for the operation of China’s cadre management system, which regulates the appointment and removal of public officials. These hypotheses are tested against empirical data, generating evidence to support the following propositions: 1>. the wielding of power within the oligarchy is constrained by institutional rules of power-sharing; 2>. the paramount leader is still provided with enough formal and informal resources to launch initiatives and avoid policy gridlock; 3>. relations between the two tiers of leaders are hierarchical, as the second tier followers are deprived of any meaningful impact on personnel and policy decisions. While it is difficult to predict whether the CCP regime will be blessed with another long spell of economic growth and political stability, the two-and-a-half decades following the Tiananmen crisis provides a vivid example of how elite cohesiveness is sustained by sophisticated power arrangements.PhDPolitical ScienceUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/113384/1/qingjie_1.pd