28 research outputs found
Effective metric of spinless binaries with radiation-reaction effect up to fourth Post-Minkowskian order in effective-one-body theory
By means of the scattering angles, we obtain an effective metric of spinless
binaries with radiation-reaction effects up to fourth post-Minkowskian order,
which is the foundation of the effective-one-body theory. We note that there
are freedoms for the parameters of the effective metric because one equation
corresponds to two parameters for each post-Minkowskian order. Accordingly, in
order to construct a self-consistent effective-one-body theory in which the
Hamiltonian, radiation-reaction forces and waveforms for the ``plus" and
``cross" modes of the gravitational wave should be based on the same physical
model, we can fix these freedoms by requiring the null tetrad component of the
gravitationally perturbed Weyl tensor to be decoupled in the
effective spacetime.Comment: 17 page
A Dynamic Credit Index System for TSMEs in China Using the Delphi and Analytic Hierarchy Process (AHP) Methods
A high-quality credit index system is essential for technological small and medium-sized
enterprises (TSMEs) to obtain financing from various institutions, such as banks, venture capital.
Some attempts have made to construct the credit index system for TSMEs. However, the current
credit index systems for TSMEs have placed too much emphasis on their financial ability with few
prominent technological and talent indicators. Therefore, this study has proposed a dynamic credit
index system for TSMEs in China using the Delphi and the Analytic Hierarchy Process (AHP) methods.
This credit index system covers a wide range of indicators to measure the enterprises’ controller
ability, operation and management ability, financial ability, and innovation capacity. This study made
some contributions in the following aspects: (1) This study proposed a credit index system for TSMEs
that highlights the main characteristics of technological innovation and talents of enterprises in China.
(2) The credit index system is also highly adaptable as it can dynamically adjust the index weight
according to the life cycles of TSMEs. (3) A case study of evaluating the credit of three TSMEs in
China was selected to verify the feasibility and the effectiveness of this system. The results show that
the credit index system constructed in this study provides a comprehensive and systematic model for
evaluating the credit of TSMEs in China.The research was funded by Sichuan University and Chengdu Administration China (Sichuan) Pilot
Free Trade Zone. And the APC was funded by Sichuan University
Bifurcation on boundary data for linear broadwell model with conservative boundary condition
10.1142/S0219891614500179Journal of Hyperbolic Differential Equations113603-61