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Search Results: 1 - 10 of 59870 matches for " Qin Wei "
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Joint Contract under Inequity Aversion  [PDF]
Guangxing WEI, Yanhong QIN
Journal of Service Science and Management (JSSM) , 2009, DOI: 10.4236/jssm.2009.23018
Abstract: The standard contract theory adopts the traditional hypothesis of pure self-interest. However, a series of game experiments have proven that people are not any self-interest but also inequity averse. Then, how will the inequity aversion influence the optimal contract for multiple agents? This paper attempts to obtain new theoretical insights by incorporating inequity aversion into the standard frame of optimal contract design. The optimal contract under relatively weak inequity aversion is found to be the relative joint contract, by which payment to each independent agent increases with his own output and others’ and agents with higher output will be paid more, while what under strong, even very strong, inequity aversion is the egalitarian joint contract, by which payment to each independent agent is always equal and hence agents with lower output will not be paid less. Moreover, it is shown that the inequity aversion results in incen-tive efficiency losses as agents with inequity aversion will suffer disutility in face of unfair allocation. Consequently, the principal has to pay additional inequity rent and risk compensation for inequity aversion to the agents, which both are the incentive efficiency losses resulted from inequity aversion and have never been explored by the standard contract theory, besides information rent and risk compensation for asymmetric information, which both have been probed in the standard contract theory deeply. In this way, this paper designs the optimal contracts for multiple agents with more realistic assumptions and hence can explain real economic behaviors more properly.
Product Configuration Flow from Obtaining Customer Requirement to Providing the Final Customized Product
Yanhong Qin,Guangxing Wei
Journal of Software , 2012, DOI: 10.4304/jsw.7.2.308-315
Abstract: The paper analyzes the modular structure of product family by decomposing the product family into generic modules. Then, the module model denoted by attribute variable is established for each generic module. Based on the classification of customer requirement and erection of product decision tree, the description and explanation type of customer requirement can be used to restrict the sub branch of decision tree in order to find out the certain product family satisfying customer. In approach of quality function deployment, the customer requirement is mapped to the module attribute, which can determinate the value and weight of module attribute variable. After retrieving the candidate set of modules which are nearest to the customer requirement on the module accordingly, the candidate modules are combined efficiently under the constraints relative to modules and attributes, In this way, many invalidate module combinations can be avoided and hence the efficiency of product configuration is promoted.
Groundstate with Zero Eigenvalue for Generalized Sombrero-shaped Potential in $N$-dimensional Space
Zhao Wei-Qin
Physics , 2007, DOI: 10.1088/0253-6102/50/1/30
Abstract: Based on an iterative method for solving the goundstate of Schroedinger equation, it is found that a kind of generalized Sombrero-shaped potentials in N-dimensional space has groundstates with zero eigenvalue. The restrictions on the parameters in the potential are discussed.
Scheme for the implementation of optimal cloning of arbitrary single particle atomic state into two photonic states
Wei Song,Tao Qin
Physics , 2006,
Abstract: We present a feasible scheme to implement the $1 \to 2$ optimal cloning of arbitrary single particle atomic state into two photonic states, which is important for applications in long distance quantum communication. Our scheme also realizes the tele-NOT gate of one atom to the other distant atom trapped in another cavity. The scheme is based on the adiabatic passage and the polarization measurement. It is robust against a number of practical noises such as the violation of the Lamb-Dicke condition, spontaneous emission and detection inefficiency.
Two Kinds of Iterative Solutions for Generalized Sombrero-shaped Potential in $N$-dimensional Space
Zhao Wei-Qin
Physics , 2008, DOI: 10.1088/1751-8113/41/23/235302
Abstract: Based on two different iteration procedures the groundstate wave functions and energies for N-dimensional generalized Sombrero-shaped potentials are solved. Two kinds of trial functions for the iteration procedure are defined. The iterative solutions are convergent nicely to consistent results for different choices of iteration procedures and trial functions.
Revised Iterative Solution for Groundstate of Schroedinger Equation
Zhao Wei-Qin
Physics , 2003,
Abstract: A revised iterative method based on Green function defined by quadratures along a single trajectory is proposed to solve the low-lying quantum wave function for Schroedinger equation. Specially a new expression of the perturbed energy is obtained, which is much simpler than the traditional one. The method is applied to solve the unharmonic oscillator potential. The revised iteration procedure gives exactly the same result as those based on the single trajectory quadrature method. A comparison of the revised iteration method to the old one is made using the example of Stark effect. The obtained results are consistent to each other after making power expansion.
Persistent ferromagnetism and topological phase transition at the interface of a superconductor and a topological insulator
Wei Qin,Zhenyu Zhang
Physics , 2014, DOI: 10.1103/PhysRevLett.113.266806
Abstract: At the interface of an s-wave superconductor and a three-dimensional topological insulator, Ma- jorana zero modes and Majorana helical states have been proposed to exist respectively around magnetic vortices and geometrical edges. Here we first show that a single magnetic impurity at such an interface splits each resonance state of a given spin channel outside the superconducting gap, and also induces two new symmetric impurity states inside the gap. Next we find that an increase in the superconducting gap suppresses both the oscillation magnitude and period of the RKKY inter- action between two interface magnetic impurities mediated by BCS quasi-particles. Within a mean field approximation, the ferromagnetic Curie temperature is found to be essentially independent of the superconducting gap, an intriguing phenomenon due to a compensation effect between the short-range ferromagnetic and long-range anti-ferromagnetic interactions. The existence of persis- tent ferromagnetism at the interface allows realization of a novel topological phase transition from a non-chiral to a chiral superconducting state at sufficiently low temperatures, providing a new platform for topological quantum computation.
Relation between Dimension and Angular Momentum for Radially Symmetric Potential in $N$-dimensional Space
Zhao Wei-Qin
Physics , 2005,
Abstract: It is proved that when solving Schroedinger equations for radially symmetric potentials the effect of higher dimensions on the radial wave function is equivalent to the effect of higher angular momenta in lower dimensional cases. This result is applied to giving solutions for several radially symmetric potentials in N-dimension.
Revised Iterative Solution of Ground State of Double-Well Potential
Zhao Wei-Qin
Physics , 2004,
Abstract: A revised new iterative method based on Green function defined by quadratures along a single trajectory is developed and applied to solve the ground state of the double-well potential. The result is compared to the one based on the original iterative method. The limitation of the asymptotic expansion is also discussed.
Preliminary Research on Visualization of S&T Policy
—A Case Study of China Innovation and Entrepreneurship Graphic Policies
 [PDF]

Qin Luo, Wei Song
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.45017
Abstract: Based on the current status and trends of S&T (science and technology) policy communication, this paper establishes the concept of policy visualization and describes the main applicability of visual policy. Next, we study the procedural requirements of S&T policy visualization on four aspects: subject selection, content analysis and information processing, policy graphic designation, media promotion. By this study, we recognize that the visualization of China’s S&T policy has some problems, such as, the difficulty in the definition of the authority of policy graphics, in homogeneity and the lack of dynamics in the effect of graphic policy and so on. Furthermore, the paper puts forward some suggestions to improve the development of S&T policy visualization according to the existing problems.
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