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To achieve security in distributed wireless sensor networks, one of the most promising approaches is the so-called random pre-distribution of key seeds. Pair-wise secure communication channels between nodes were established or discovered by using key information that were constructed and pre-distribution to each node in distributed wireless sensor networks. Combining DNA model with the idea of multiple...
Just as electronic systems implement computation in terms of voltage (energy per unit charge), molecular systems compute in terms of chemical concentrations (molecules per unit volume). Prior work has established mechanisms for implementing logical and arithmetic functions including addition, multiplication, exponentiation, and logarithms with molecular reactions. In this paper, we present a general...
We present a methodology for implementing digital signal processing (DSP) operations such as filtering with biomolecular reactions. From a DSP specification, we demonstrate how to synthesize biomolecular reactions that produce time-varying output quantities of molecules as a function of time-varying input quantities. Unlike all previous schemes for biomolecular computation, ours produces designs that...
The performance evaluation of supply chains is the key of effective supply chain management, which is not only helpful to describe and analyze the historical performance and status, but also can be used to set performance targets and determine the future focus. The paper, according to the shortcomings of existing fuzzy comprehensive evaluation models, eliminated the redundant data in index membership...
In workflow systems, time performance of workflow instances is key to business management and scheduling. Firstly, the concept of active transition was proposed and its performance equivalent model was analyzed under resources-limited circumstances. Then, the concept of active pattern was proposed and time performances of four basic active patterns were deduced. Finally, an example was given to demonstrate...
Different information retrieval models produce different retrieval results, and have different efficiencies. The paper firstly introduced the basic information retrieval process, and then listed three types of information retrieval models according to two dimensions and their relationships, and lastly gave out related calculation formulas for performance measure of information retrieval models.
With the rapid development of Internet applications and the fast increasing number of users, the traditional network protocol layered only by the basic communication functions can create barriers rather than stimulants to its further development. This paper analyzes the problems and challenges of the classic Internet communication protocol, explicit the important features that NGI (next generation...
For a three-echelon stochastic inventory system in the supply chain, it is difficult to get optimal inventory control policies by analytical methods. The paper sets up an optimization model, which is built on the basis of the discrete event system simulation theory. The simulation-based optimization method is used to solve the problem by combining the simulation model and the particle swarm optimization...
Mobile Agent Technology covers migration mechanism, communication facilities and security system, of which migration mechanism, functioning as the basic and core technology, supports agents to roam and execute consecutively on the network. The thesis analyzes the inner-relation of migration mechanism, and proposes the designing of Agent Transparent Migration based on Type Inference, so as to design...
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