One key to success for high quality enterprise information systems development is to validate the customers' requirements sufficiently at the early stage. Scenarios are an effective means to an end because they ma...
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One key to success for high quality enterprise information systems development is to validate the customers' requirements sufficiently at the early stage. Scenarios are an effective means to an end because they make it possible to represent various situations of system usage. Most scenarios are defined by using a natural language or such a formal language as Unified Modeling Language (UML) and describe normal, alternative, and exceptional service flows from the point of view of system usage. As a result, scenarios make it easy for the customers to confirm their requirements intuitively because of the concreteness. On the other hand, based on the V-model, which is well-known software development process and denotes the correspondence of requirement analysis stage to integration test stage, it is desirable that the testers should test the system by using the test cases derived from the validated scenarios. We have proposed a UML-based requirements analysis (RA) model with automatic prototype system generation for enterprise Web application development. This paper proposes a way to efficiently create reliable test cases from the scenarios that have been validated by the customers using the prototype system which was generated by the RA model.
It has been widely acknowledged that ambiguous or incomplete customer requirements are a major reason for the failure of software development projects. A key example of this is the inconsistency between implementation...
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It has been widely acknowledged that ambiguous or incomplete customer requirements are a major reason for the failure of software development projects. A key example of this is the inconsistency between implementation image and specifications provided in the early stages of software development. To address this, we propose a method for automatic generation of user interface prototypes for developing Web-based business applications, based on the requirements specifications defined in the Unified Modeling Language (UML). In this study, we compare the proposed method with traditional use case modeling to evaluate the effectiveness of the proposed method.
In this paper, we derive the impulse response of a generalized commensurate fractional-order filter of the form (s 2α +as α +b) -γ , where a, b ≥ 0, α ∈ (0, 1] and γ ∈ (0, 1). The asymptotic properties of the ...
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In this paper, we derive the impulse response of a generalized commensurate fractional-order filter of the form (s 2α +as α +b) -γ , where a, b ≥ 0, α ∈ (0, 1] and γ ∈ (0, 1). The asymptotic properties of the impulse responses are obtained. Moreover, based on the derived analytical impulse response, we show how to perform the discretization of the above fractional-order filter. Finally, a number of illustrated examples in time and frequency domains are provided as proofs of concepts.
In this paper a new approach to multiobjective control is proposed. The approach is based on Model Predictive control but is extended to account for several independent objective functions. This is done by substitutin...
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In this paper a new approach to multiobjective control is proposed. The approach is based on Model Predictive control but is extended to account for several independent objective functions. This is done by substituting a single objective predictive optimisation task with the multiobjective one. A dedicated method of selecting a unique solution from the resulting Pareto front is then required to be applied to the plant. An adaptive selection mechanism is proposed. It adjusts itself to the current Pareto front by means of updating the utopia point and span of the front based on the current front. Moreover, a way of introducing preferences to the selection mechanism is proposed. The derived adaptive multiobjective model predictive controller is then applied to integrated quality and quantity control of drinking water distribution system
The paper considers a complex problem of the optimized management and control of energy supplied from solar and traditional electrical and gas energy sources into a single-family house in order to meet required temper...
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The paper considers a complex problem of the optimized management and control of energy supplied from solar and traditional electrical and gas energy sources into a single-family house in order to meet required temperature in the house. Solving the problem is approached by applying the controlengineering methods. The system model dynamics is derived and simulated in order to learn its essentials needed for designing the management and control architecture. The multilayer architecture including actuators of the control signals is derived and discussed. A model predictive control is proposed as a base for designing the control algorithms.
A problem of optimised placement of the hard quality sensors in Drinking Water Distribution systems for robust quality monitoring is formulated. Two numerical algorithms to solve the problem are derived. The optimalit...
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A control system engineering approach to monitoring and control of critical infrastructure systems (CIS) is presented in the paper. A multilayer structure for an intelligent reconfigurable agent operating within a sin...
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This paper discusses tracking control problem with a discrete-time multi-agent system with active leader and quantized communication constraints. For the active leader in a general linear form, we give a distributed d...
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This paper discusses tracking control problem with a discrete-time multi-agent system with active leader and quantized communication constraints. For the active leader in a general linear form, we give a distributed design for each discrete-time agent in the leader tracking control problem and analyze the tracking convergence with the help of Riccati equation and common Lyapunov function when the communication channel is perfect. Then a stochastic quantization strategy is applied to model the information transmission in the agent coordination and the corresponding solution is also given, even if the interconnection topology is switching.
In this paper, we derive the analytical impulse response of a fractional-order distributed parameter low-pass filter of the form integral from x=a to x=b of 1/Ts~(alpha)+1 dT, where 0 <= a <= b and alpha E (0,1)...
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ISBN:
(纸本)9781424477456
In this paper, we derive the analytical impulse response of a fractional-order distributed parameter low-pass filter of the form integral from x=a to x=b of 1/Ts~(alpha)+1 dT, where 0 <= a <= b and alpha E (0,1). The asymptotic properties of the impulse responses are obtained. Moreover, based on the derived analytical impulse response, we present a technique to perform the discretization of the above fractional-order filter. Finally, a number of illustrated figures are presented to validate the concepts.
In this paper, we derive the impulse response of the fractional distributed order low-pass filters. Based on the derived analytical impulse response, a method on how to perform the discretization of the above distribu...
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In this paper, we derive the impulse response of the fractional distributed order low-pass filters. Based on the derived analytical impulse response, a method on how to perform the discretization of the above distributed order low-pass filters is presented. Time and frequency domains illustrations are provided.
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