This paper investigates the H∞ master–slave synchronization problem for delayed impulsive implicit hybrid neural networks based on memory-state feedback control. By developing a more holistic ...stochastic impulse-time-dependent Lyapunov–Krasovskii functional and dealing with the nonlinear neuron activation function, the stochastic admissibility and prescribed H∞ performance index for the synchronization error closed-loop system are achieved. In addition, the desired mode-dependent memory-state feedback synchronization controller is acquired in the form of linear matrix inequalities. The free-weighting matrix technique is adopted to remove the inherent limitation of time-varying delay derivative for the implicit delayed systems, and the derivative of time-varying delay is relaxed enough to be greater than 1. The simulation of genetic regulatory network in bio-economic system is given to verify validity of the derived results.
•A novel deterministic and statistical energy analysis method is proposed.•The definition and relationship of the coupling coefficient, coupling strength and coupling quotient.•The coupling strength ...between the plate and acoustic cavity could be determined by the mode shape matching of the plate and acoustic cavity.•Addition of stiffener onto the plate, increase of the plate thickness or decrease of the cavity volume will reduce the coupling strength.
This paper combines the Impedance Mobility Compact Mothed (IMCM) with Statistical Energy Analysis (SEA) method to develop analytical structural-acoustic approach for analysis of a plate-cavity coupling system. The coupled system is composed of an acoustic cavity covered with a rectangular flexible plate that is stiffened by a beam integrated to the inner surface of the plate to modify the coupling strength between the plate and the air inside the cavity. This paper discloses the relationship between the coupling strength and coupling quotient. The results of the study indicate that the coupling strength between the plate and acoustic cavity can be determined by the natural frequency proximity and the matching degree of the mode shapes of the plate and acoustic cavity. Addition of stiffener onto the plate, increase of the plate thickness or decrease of the cavity volume will reduce the coupling strength. The newly proposed coupling coefficient can better quantify the coupling characteristics of the plate and cavity system in the low-middle frequency ranges. The results assessed by the proposed coupling coefficient have been verified by those assessed by the previously defined coupling coefficient and the coupling quotient in the SEA model in the high frequency range.
A new approach by means of the Cauchy matrix is developed to obtain integrable equations with self-consistent sources. We derive a lower order Kadomtsev–Petviashvili equation with self-consistent ...sources which is then reduced to the multi-component Yajima–Oikawa system. This approach allows explicit multiple-pole solutions. New solutions of the Yajima–Oikawa system are obtained, of which there is more freedom in dispersion relations and amplitudes.
•An evaluation framework is presented for evaluating and ranking of authentication methods in IIoT.•Features related to authentication and uses Graph Theory Matrix (GTM) approach.•Benchmark or ...criteria is designed based on the identified set of authentication features.•Delphi method/estimate-talk-estimate technique for data collection from expert panel.•First framework that is based on mathematical model and empirical approach.
Industry Internet of Things (IIoT) has become the most evolving area over the last few years. The number of IoT devices connected in industry has sharply elevated but this surge has led to the vulnerability and data breach such as if a malicious entry is made to the secure network, it will forfeit all the network resources. For this purpose a full pledged secure authentication method is essential to safeguard IIoT network. There is a bulky list of number of authentications protocols available to keep network safe with a variety of features so but it becomes herculean task for network administrator to pick the strong and secure authentication method due to huge number of criteria, conflicting objectives and availability of authentication protocols in industry environment. It has become imperative to get the most rational authentication method in devices operating in IIoT. To address this issue, a feature-oriented assessment framework is put forward to provide a ground for ranking and selection of best authentication mechanism. This framework uses a mathematic approach known as Graph Theory Matrix Approach (GTMA) and selects the best authentication method based on the number of features. These features are related to authentication and covers almost every aspect of authentication method and are used as benchmark for selection purposes. This framework takes into account the most important features and helps in selecting the best and most ideal features-oriented authentication method that can be employed in IIoT to keep the integrity and security of connected devices and overall network infrastructure.
By the mean of the effective mass approximation (E.M.A) and compact density matrix method, the energy eigenvalues, linear and nonlinear dielectric function have been theoretically investigated for ...CdS/ZnS cylindrical core/shell quantum dot embedded in PVA, PMMA and SiO2 matrices. Simulation results showed that the presence of the dielectric mismatch in the QD-matrix system can lead to a significant enhancement on the nonlinear dielectric function. According to our calculations, peaks of the real and imaginary part of the dielectric function can experience a redshift or a blueshift with the appropriate dielectric environment.
Display omitted
•Intersubband transition.•Linear, nonlinear optical properties have been evaluated for three different matrices (PVA, PMMA and SiO2).•Peaks of susceptibility can experience a red or blue shift with the appropriate dielectric environment.
By the mean of the effective mass approximation (E.M.A) and compact density matrix method, the energy eigenvalues, linear and nonlinear dielectric function have been theoretically investigated for CdS/ZnS cylindrical core/shell quantum dot embedded in PVA, PMMA and SiO2 matrices. Simulation results showed that the presence of the dielectric mismatch in the QD-matrix system can lead to a significant enhancement of the nonlinear dielectric function. According to our calculations, peaks of the real and imaginary part of the dielectric function can experience a redshift or a blue shift with the appropriate dielectric environment.
Blockchain and Internet of Things (IoT) technologies have considerable potential to achieve sustainability in logistics and supply chain management. However, the integration of blockchain-IoT has not ...been explored extensively in past research. This research provides a complete analysis of the enablers for using blockchain-IoT to manage logistics and supply chains. It aims to explore and prioritise various enablers for its adoption. The Diffusion of Innovation and the Technology-Organisation-Environment theories are used in this research to examine blockchain-IoT adoption enablers. The enablers identification is confirmed using the Fuzzy-Delphi technique and then analysed using the fuzzy - Decision-Making Trial and Evaluation Laboratory tool to determine the strength of cause-effect hierarchical framework. The sensitivity analysis is also carried out to address the robustness of the results obtained. In order to measure the extent of a firm's readiness to adopt blockchain-IoT, a framework based on Graph Theory Matrix Method is proposed. It is illustrated with the help of a real life case. The results revealed that ‘sustainability focus’, ‘emphasis on emerging technology by organisation’, and ‘technology maturity’ are the top three enablers for blockchain-IoT adoption. Findings of study may motivate managers to include blockchain-IoT into their strategic planning processes based on their categorization of enablers into cause and effect categories. The research findings may also be used to the creation of efficient Blockchain-IoT deployment methods.
•Nineteen enablers to Blockchain-IoT adoption in supply chains are identified.•Fuzzy-DEMATEL method is used to rank enabling factors of BIoT adoption.•A self-assessment framework to evaluate readiness for BIoT adoption is proposed.•Sustainability focus, emphasis on emerging technology and technology maturity are major enablers.
Based on the transmittance matrix ( T -matrix) approach, an efficient and stable rigorous coupled-wave analysis (RCWA) method for ultrathin multilayer gratings without solving eigenvalues is proposed ...in this letter. The numerical instability caused by the inversion of an ill-conditioned matrix in the traditional T -matrix approach is solved by implementing the proposed method. Besides, compared with the traditional RCWA method, the proposed method does not need to solve the eigenvalues and eigenvectors of the eigenmatrix, which avoids the numerical problems and time-consuming problems caused by this process. A numerical example shows that the results of CST simulations are consistent with the results obtained by the proposed method.
We theoretically propose a dense coding scheme based on an infinite spin-1/2 Ising-XXZ diamond chain, where the Heisenberg spins dimer can be considered as a quantum channel. Using the ...transfer-matrix approach, we can obtain the analytical expression of the optimal dense coding capacity χ. The effects of anisotropy, external magnetic field, and temperature on χ in the diamond-like chain are discussed, respectively. It is found that χ is decayed with increasing the temperature, while the valid dense coding (χ>1) can be carried out by tuning the anisotropy parameter. Additionally, a certain external magnetic field can stimulate the enhancement of dense coding capacity. In an infinite spin-1/2 Ising-XXZ diamond chain, it has been shown that there exist two kinds of quantum phase transitions (QPTs) in zero-temperature phase diagram, i.e., one is that the ground state of system changes from the unentangled ferrimagnetic state to the entangled frustrated state and the other is from the entangled frustrated state to the unentangled ferromagnetic state. Here, we propose that optimal dense coding capacity χ can be regarded as a new detector of QPTs in this diamond-like chain, and the relationship between χ and QPTs is well established.
•We study optimal dense coding in the infinite Ising-XXZ diamond chain.•The relationship between energy spectrum and quantum phase transition is discussed.•QPT can be detected by optimal dense coding capacity at finite temperature.
Several factors, such as rapid industrial development, rising population, growing waste disposal, and exponential depletion of natural resources, have become a global challenge and call for a ...multifaceted approach to environmental protection. Rising consumers' awareness of environmental issues and the evolving ecological legislation puts pressure on businesses to adopt green practices in product design, manufacturing, distribution, and end-of-life disposition. Looking at these challenges, reverse logistics (RL) also known as reverse operations has become the most investigated theme in Supply Chain Management (SCM). Incorporating reverse logistics into the supply chain is not a simple task. Outsourcing reverse operations to the third-party reverse logistics service provider (3PRLSP) is an important strategic decision by many companies. This helps them to achieve a competitive advantage by reducing costs and improving quality processes and services. To this aim, this paper proposes a novel hybrid framework for selecting a 3PRLSP for the electronic industry. The first stage includes the preliminary screening of 3PRLSPs based on the method of effectiveness and compliance (E&C). In the second phase, graph theory and matrix approach (GTMA) is employed to choose the best 3PRLSP for outsourcing the reverse operations. The application of the proposed method is validated through a case-study based approach with reference to the Indian consumer electronic company. The data for the study was collected from experienced experts in senior managerial positions in the industry. The study findings revealed that the three dimensions of sustainability- economic, environmental and social, are vital in selecting 3PRLSP.
•Proposed a novel hybrid framework for selection of third-party reverse logistics service provider (3PRLSP).•Method of effectiveness and compliance (E&C) was adopted for screening of 3PRLSPs.•Graph theory and matrix approach (GTMA) was employed for final selection of 3PRLSP.•The model's effectiveness was confirmed by applying it in the Indian consumer electronic industry.
