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A mathematical model for the scheduling of angiogenic inhibitors that includes a pharmacokinetic equation is considered as an optimal control problem. When dosage and concentration of the inhibitor are identified, there exists an optimal singular arc of order 1 that forms the core of a synthesis of optimal controls. Under the standard pharmacokinetic linear model for the concentration this singular...
Logistics distribution locating problem is an important area in logistics, which select the most reasonable location of distribution centers from many places. This paper establish the cellular PSO algorithm, which combine the particle swarm optimization algorithm and cellular automata. This algorithm was tested in the simulation experiment, and the result indicate that the cellular PSO algorithm is...
Electronic money products have advanced quickly with the rapid growth of electronic commerce, and different stakeholders show shared concern on the related impact. In order to have a holistic and in-depth analysis of the e-money issues, this paper studies the e-money dynamics from complex system perspective. System complexity analysis is conducted and a four-phase modeling approach is proposed. This...
In e-commerce environments, problems of credit risks are more serious than that of the traditional commerce due to interactions between unfamiliar peers. The application of credit evaluation system for e-commerce plays a important role in mitigating credit risks. This paper proposes an improved AHP-based multi-dimension credit evaluation model based on an analysis of the drawbacks of the current model,...
This paper discussed systematically the conception, attribute and model of service supply chain for solving the problems of current research situation. So they reviewed and redefined the conception of service supply chain, discussed the attributes of object, structure, dynamic and operation, proposed the mathematical model. At last, the authors describe an application case that can verify the solvability...
Weld line is one of the defects occurring in injection molded parts which should be positioned at low-stress and non-critical areas. The paper presents an approach to effectively specify the weld-line locations by exploiting sequential-valve-gate molding. The method accurately repositions the weld lines to the desired locations by varying the opening timings of valve gates and the index of conformity...
This article discusses the stability problem of coupled linear differential-difference equations with norm bounded uncertainty. Coupled differential-difference equations represent a very general class of time-delay systems, which include as special cases many time-delay systems of neutral type, systems with commensurate delays, and many singular time-delay systems. A new stability criterion in the...
The powdered injection system is a novel biomedical device for needle-free adminstration of DNA vaccines. One system, call the Venturi device, uses the venturi effect to entrain DNA-coated micron gold particles into an established quasi-steady supersonic helium jet flow and accelerate them into an appropriate momentum in order to penetrate the outer layer of the skin or mucosal tissue to achieve a...
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