The move to preferential trade on the Western Pacific Rim: some initial conclusions

Since? ? Research for this project has been supported by the Australian Research Council through Discovery Project Grant No. DP0453077. View all notes the turn of the century the Asia-Pacific region has become the most active location for the negotiation of preferential trade agreements (PTAs)—a dramatic change from the period before the financial crises of 1997–98. Substantial variance in scope exists among the more than 80 PTAs currently being implemented, negotiated or which are under study in the region. Those involving the United States are by far the most comprehensive. At the other end of the spectrum are those involving ASEAN and China, which are largely ‘aspirational’ in their provisions. This variance points to the range of economic and political objectives that PTAs serve. Regardless of the comprehensiveness of their coverage, the overall economic effects of the new PTAs is likely to be small given the prevailing low level of tariffs, the intervention of other factors such as fluctuating exchange rates, the proliferation of agreements (which removes the advantages they accord individual partners), and the unwillingness of governments to liberalise ‘sensitive’ sectors. Few of the agreements move substantially beyond existing WTO provisions. The proliferation of PTAs not only has tended to shift attention and resources away from negotiations at the global level but also runs the risk of fragmenting the ‘pro-liberalisation’ coalition in countries that have signed multiple agreements.     

German liberalism and the militarisation of civil society, 1813–1848/49

From the beginning of nineteenth century German liberals endeavoured to reform the armies of different German states, subject them to constitutional authorities, open their ranks to members of civil society and turn military service into a civic obligation. After the Wars of Liberation and during the Vormärz years, the liberals struggle for democratically oriented armed forces was combined with their opposition to restorative regime and their hopes for the national unification of Germany and the formation of civil society. The liberals campaign, however, turned military service and military values into authentic manifestations of the ideal civil society. Military service was admired for the qualities it bestowed on those who bore arms and the values guiding its members as citizens. Paradoxically, military service became the founding institution of civil society. This process found further expression upon the renewed establishment of the civil militias (Bürgerwehren) during the Vormärz and the central role they played in the 1848 revolution. They were intended to introduce alternative forces into the army, but they ended up performing popular military and policing activities. Through this process, the Bildung ideal in the formation of civil society declined considerably, and the liberals actually contributed to the militarisation of society.     

SEISMIC RESPONSE CONTROL OF CABLE-STAYED BRIDGE USING DIFFERENT CONTROL STRATEGIES

The goal of this research is to study the effect of cable vibration through a number of control cases of a cable-stayed bridge. In order to consider the complicated dynamic behaviour of the full-scale bridge, a three-dimensional numerical model of the MATLAB-based analysis tool has been developed by the complete simulation of the Gi-Lu bridge. The dynamic characteristics of cables in the cable-stayed bridge are verified between the field experiment and the result from numerical simulation using geometrically nonlinear beam elements in MATLAB program. Three types of control devices are selected to reduce the response of the bridge deck which includes: actuators, viscous-elastic dampers with large capacity, and base isolations. Moreover, two types of control devices, MR dampers and viscous dampers, are installed either between the deck and cables and/or between two neighbouring cables for controlling the cable vibration. A modified bi-viscous model combined with convergent rules is used to describe the behaviour of MR dampers. Finally, through evaluation criteria the control effectiveness on the cable-stayed bridge using different control strategies is examined.     

SEGMENTAL CROSS-SPECTRUM AS A NEW TECHNIQUE IN SITE RESPONSE ESTIMATION USING SPECTRAL RATIO ANALYSIS

Different aspects of spectral analysis for site response evaluation are investigated in this study. The segmental cross-spectrum is proposed in spectral analysis of earthquake ground motions. The performance of segmental cross-spectrum in contrast with the conventional methods is investigated through the mathematical modelling, numerical analysis and application to earthquake data recorded at Chiba and Shinfuji downhole arrays in Japan. In analysis of earthquake data, the soil amplification function is identified using both uphole/downhole (U/D) and H/V spectral ratios. The advantage of seg-mental cross-spectrum is assessed by comparing identified amplification functions using different spectral methods and theoretical soil response. The reliability of site response estimations obtained by H/V spectral ratio using segmental cross- and Fourier spectra is also examined by means of cross-validation with the U/D spectral ratio of earthquake motion and theoretical soil response. Furthermore, the application of segmental cross-spectrum in nonlinear soil response is examined by comparing the amplification function of weak and strong motions for both methods. The results validate the advantage of segmental cross-spectrum in both linear and nonlinear soil response, particularly, when it used with H/V technique.     

Evaluation of the Nonlinear Seismic Response of an Earth Dam: Nonparametric System Identification

A system identification framework is proposed to investigate the nonlinear dynamic response of massive earth dams using the seismic motion recorded by a sparse array of accelerometers. The framework includes a methodical step of nonparametric analyses to characterize the involved loading conditions and response mechanisms. This nonparametric step provides essential information to reduce the indeterminacy of the associated parametric identificatin problem and ensure a proper model selection, calibration, and validation. The proposed framework was applied to the Long Valley earth dam (California) and benchmarked using records of a series of 1980 earthquakes. This article presents the conducted correlation, spectral motion reconstruction, and nonparametric stress-strain analyses. These analyses revealed a complex three-dimensional dynamic response marked by non uniform boundary conditions and a shear stress-strain behavior slightly less nonlinear than what was observed in triaxial tests of soil samples taken from the dam core.