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Accurate and simple simulation flow model is useful to make decision at the right time to manage supply chain or workshop. To do that, different reduction model complexity approaches have been proposed. One of them is to associate discrete event model of bottlenecks and continuous model of other work centers according to the theory of constraints. The continuous approximation is used only do determine...
Partial updating of filter coefficients is an effective method for reducing computational load and power consumption in adaptive filter implementation. In this paper, we present a class of MMax partial update NLMS algorithms suitable for estimating UWB channels, whose characteristics have shown to vary between highly sparse and dense depending on the channel environment under consideration and the...
Grid service and web interface for dynamical interactive 3D visualization of big data arrays is proposed, implemented and tested. The main requirement of system design is low latency and traffic reduction during data transfer. Distributed grid service is based on Hadoop Map-Reduce implementation. Web interface is implemented using three.js WebGL library. Visualizing of non-linear dynamics simulation...
In this paper voltage source converters (VSCs) are being used in grid integrated power converters. For the mathematical model of PWM inverter under the d-q rotary coordinate system. This work has proposed a Microgrid power flow control under variable load and generation conditions. There exists coupling between the active current and reactive current, which makes it difficult to manipulate the power...
In this paper, a 6-bit 320-MS/s successive approximation register analog-to-digital converter (SAR ADC) is presented. The 2-bit/cycle technique and tri-level based charge redistribution technique are utilized to achieve high conversion rate and reduce the hardware cost. The proposed ADC is designed and implemented in a 65-nm CMOS process. Simulation results show that it accomplishes 48.52-dB SFDR,...
The grain drying process has the characteristics of large time delay, nonlinearity, multi disturbance and strong coupling. In order to reduce the grain moisture content during drying process, to ensure the grain quality of the grain, and enable the uniform moisture content of outlet grain, a new improved controller model for grain drying which called the dual fuzzy self-adjusting immune PID controller...
This paper reports on the mechanism design of a compact XYZ parallel flexure sage. First, a new bridge-principle amplifier is proposed by a serial connection of two fundamental bridge amplifiers. Then, a comparison study of three displacement amplifiers in terms of one-stage, two-stage, and three-stage amplifiers is conducted by performing finite-element analysis (FEA) simulations. Owing to a larger...
Node locations and distance are important in networks. This article assumes sensor nodes are distributed randomly and studies the energy consumption in a single regular hexagon and two adjacent regular hexagon. Meanwhile, distance distribution function is verified and point average energy consumption function is derived and simulated by using Monte Carlo method. The simulation results show that distance...
In this paper, a low overhead preamble structure is proposed for the interference approximation method — complex (IAM-C) method in offset quadrature amplitude modulation based orthogonal frequency division multiplexing (OQAM-OFDM) systems. Compared with the conventional preamble structure with three columns of symbols, the proposed preamble structure only requires two columns of symbols as the preamble...
In this paper we address the diffusion of useful information in generalized networks each consisting of a wireless physical substrate and a social network overlay. Contrary to previous works, we consider the effect of user interest and features thereof on the spreading dynamics of useful information within these complex wireless-social networks, e.g., how interest periodicity affects the diffusion...
The elastic optical network (EON) provides fine-grained and orthogonal spectrum slots for the establishment of the elastic connection using orthogonal frequency division multiplexing (OFDM). Currently, the EON interconnection has realized the high-rate transmission among data centers (DCs). With the implementation of cloud DCs (CDCs) and EON virtualization, it becomes very essential to achieve the...
To achieve higher spectral efficiency in future wireless networks, small cells have been conceived to be deployed over conventional macrocell networks, generating heterogeneous networks (HetNets). However, interference between different tiers of HetNets is the main bottleneck for high spectral efficiency. Spectrum access, including spectrum deployment and channel access, is one of the most powerful...
Many device to device communication networks can be modelled by multi-class tandem queues. In many applications, it is desired to have different quality of service for various classes. This can be achieved by implementing dynamic priority across classes. Performance analysis is an important aspect in such multi-class tandem queueing models for resource allocation. In this paper, we analyse two important,...
In this paper, we introduce an efficient method to control the propagation stopping condition locally for asynchronous binary propagation networks. Additional switches are introduced to the Wired-OR pull-down path branches, where the switches are controlled by the PE outputs from the neighborhood. An example for a 1-D case for object center pixel extraction is given with simulation results for asymmetric...
This paper proposes a new operation strategy for a three-phase inverter based on impedance-source network in grid connected applications as well as an indirect control method of the dc-link voltage. The strategy is based on a d-q synchronous reference frame and it is mainly intended for photovoltaic applications at high switching frequency. Both control systems are explained in detail and the problems...
Named Data Networking (NDN) is currently a hot research topic in the field of network architecture, and its transport control mechanism is one of the key technologies needed to be studied. Since the transport in NDN network has the characteristic of multi-source, the implicit congestion detection mechanism of the traditional TCP protocol is no longer suitable for the NDN network. In this paper, we...
The paper focuses on the pedagogical aspects, user functions and software design considerations of a simulation « workshop » developed within HADOC, which is a web-based educational package dedicated to the exploration of basic concepts in Automatic Control and to the study of the multiple interconnections between these concepts. HADOC contains expository/static elements like definitions, methods,...
In order to extend basic functions of wireless sensor network (WSN), many researchers have begun to study rechargeable wireless sensor networks that use of Wireless Charging Technology to supply power for sensor nodes so that the wireless sensor networks have the sustainability. The main classifications of wireless charger antenna are Directional Antenna and Unidirectional Antenna respectively. We...
We here propose geographical proximity based target-group formation algorithm to efficiently distribute advertisement messages of social-commerce services with device-to-device (D2D) communications. The convergence of D2D communications and the social-commerce services is able to invoke synergistic effects because the D2D users can voluntarily relay the messages to their neighbor users to obtain a...
Over the last decades there has been a growing interest in modeling human performance and analyzing human activity and human operator behavior to improve system design. A variety of tools and approaches which are based on task analysis methods and tools have been proposed. As technology advances and tasks become more demanding, human work changes increasing the need to create new methodologies and...
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