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The GMM classifier for pattern recognition has shown increased intention in many applications such as speaker verification and identification. Such classifier requires a large storage and complex processing units but improved in performances. The performances of the GMM and its hardware complexity are analyzed in this paper. FPGA-based hardware implementation of the Log-Add algorithm is presented...
In adaptive learning systems for distance learning attention is focused on adjusting the learning material to the needs of the individual. Adaptive tests adjust to the current level of knowledge of the examinee and is specific for their needs, thus it is much better at evaluating the knowledge of each individual. The basic goal of adaptive computer tests is to ensure the examinee questions that are...
There are presented two recent applications of special semirings. There is introduced an innovative concept in modelling operations of container quay cranes based on pseudo-analysis in the form of maxplus semiring. In social sciences the ordering on a semiring of monotone doubly stochastic matrices in Shorrocks' sense is investigated. It is identified a class of an equilibrium index of mobility that...
This paper presents an implemented 4-bit phase ADC circuit. It introduces a model to calculate its dynamic range considering second order effects including non-linearity and offsets. The study also encompasses the phase resolution and validates the model with measurement results from the implemented chip. Our analysis shows that the phase ADC is extremely robust against circuit non-idealities and...
This work presents a low-cost magnetic levitation system that can be very easily built by undergraduate or master degree students, in order to learn several control and electronics topics. The whole design process proposed in the classroom, and the resulting electronics circuits are described. Three different approaches to implement the control system are shown: analog, digital with microcontroller,...
This paper deals with the design of CMOS sampling switch for ultra-low power analog-to-digital converters (ADC) in biomedical applications. General switch design constraints are analyzed, among which the voltage droop due to the subthreshold leakage current constitutes the major error source for low-speed sampling circuits. Based on the analyses, a CMOS sampling switch with leakage-reduction has been...
In this paper the notion of generalized possibilistic risk premium is introduced as a measure of the risk aversion of an agent faced with several components of possibilistic risk. The main result of the paper is a formula for the calculation of the generalized possibilistic risk premium expressed in terms of a utility function and of some possibilistic indicators.
In this paper, a full 3D reconstruction pipeline is presented to realize the navigation of an autonomous robot. The system utilizes the existing algorithms for multi-view stereo and develops them into an automated system where the input is a video (or random images) obtained by the robot and the output is the model of the reconstructed environment containing the path of the robot exploring it. We...
In most articles dataflow in computer networks is described as a transfer function. Numerators, denominators and delay times give behaviors of these systems. Some systems show linear features, others have non-linear ones. All descriptions have some special results. Some of them present linear aspects of transfers, while other ones look for bottlenecks of the networks or prove stability of the systems...
In this paper we show how a simple dataflow processor can be fully implemented using CλaSH, a high level HDL based on the functional programming language Haskell. The processor was described using Haskell, the CλaSH compiler was then used to translate the design into a fully synthesisable VHDL code. The VHDL code was synthesised with 90 nm TSMC libraries and placed and routed. Simulation of the final...
The heterogeneous fleet vehicle routing problem with time windows is a variant of the classical vehicle routing problem. This paper defines a mathematical model of this problem and proposes a variable neighborhood tabu search algorithm to solve it. The initial solution is obtained by GENIUS and the giant tour algorithm. Our algorithm employs a variable neighborhood mechanism to search the optimal...
An extended car-following model is proposed by incorporating the anticipative information by vehicle to vehicle. The stability condition of the proposed model is obtained by using the linear stability theory. The results show that the anticipative information can promote the stability of traffic flow. Numerical simulations are carried out, and the results are consonant with the theory ones.
The characteristics of reverse logistics make the inventory management issues very complex. Once shortage happens, the reverse logistics network nodes will have insufficient workload even stop work. The previous studies about shortage more established on the assumptions of complete backlogging or complete losing, but the partial backlogging problem is less discussed. So this study develops a partial...
Predicting residual life of cable plays a key role in ship management. In this paper, the Grey Linear Regression Model is used for residual life prediction of shipboard cable under influence of multi-factors. The method is proved effectively by the comparison between the actual aging data and the data acquired by the traditional Arrhenius Equation.
Along with the economic development, cities are increasingly congested in China. In order to eliminate peak-hour congestion, many cities establish priority lanes such as bus lanes and Olympic lanes. Although priority lanes could help Local Authorities gain its short-term management objectives, at the same time, it would greatly infringe on the legitimate rights of other vehicles and waste the scarce...
Field-programmable gate arrays (FPGAs) can provide an efficient programmable resource for implementing hardware-based spiking neural networks (SNN). In this paper we present a hardware-software design that makes it possible to simulate large-scale (2 million neurons) biologically plausible SNNs on an FPGA-based system. We have chosen three SNN models from the various models available in the literature,...
In order to improve operation efficiency and customer satisfaction and to minimize the turnaround time of vessels at container terminals, a berth allocation problem (BAP) was formulated. An adaptive artificial fish swarm algorithm (AFSA) was proposed to solve it. Firstly, the basic principle and the algorithm design of the AFSA were introduced. Then, for a test case, computational experiments explored...
The paper has constructed the mathematical model on the storage location assignment in AS/RS, and then optimized and solved it, performed instance simulation design and analysis on the storage location assignment by means of Flexsim. Finally, we have concluded that the storage location assignment model after optimization would solve the storage location assignment problem in AS/RS effectively and...
Home-appliance replacement may be implemented in two situations: with and without the financial subsidy offered by the government. As the implement entity of the home-appliance replacement, the enterprise may have two choices: with and without the replacement. In this paper, we analyzed the behaviors of the government and the enterprise based on a mixed-strategy game by system dynamics methodology...
This paper puts forth a model of the transportation and inventory integration and optimization problem based on system and optimal theory which we take into account the antinomy relationship of transportation and inventory and the antinomy relationship of inventory and stock-out in supply chain logistics system. We consider that the resources available and the total time of inventory and transportation...
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