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Articles 1801 - 1830 of 2936
Full-Text Articles in Social and Behavioral Sciences
A Secure Elliptic Curve Based Rfid Ownership Transfer Scheme With Controlled Delegation, Shu Cheng, Vijay Varadharajan, Yi Mu, Willy Susilo
A Secure Elliptic Curve Based Rfid Ownership Transfer Scheme With Controlled Delegation, Shu Cheng, Vijay Varadharajan, Yi Mu, Willy Susilo
Faculty of Engineering and Information Sciences - Papers: Part A
In practical applications, the owner of an RFID-tagged item canchange. In this paper, we propose a new RFID ownership transfer protocol using elliptic-curve cryptography. The paper first considers security and privacy requirements in the ownership transfer process. Then the paper provides a detailed description of our ownership transfer scheme outlining various protocol phases. Key features of the proposed scheme are that it allows controlled delegation and authorisation recovery, and the ownership transfer is achieved without a trusted third party. We describe a security analysis of the proposed scheme and demonstrate that it meets the desired security and privacy requirements. We …
The Influence Of Pallets On The Behaviour And Design Of Drive-In Steel Storage Racks - Part I: Behaviour, B P. Gilbert, L H. Teh, R X. Badet, K J. R Rasmussen
The Influence Of Pallets On The Behaviour And Design Of Drive-In Steel Storage Racks - Part I: Behaviour, B P. Gilbert, L H. Teh, R X. Badet, K J. R Rasmussen
Faculty of Engineering and Information Sciences - Papers: Part A
Drive-in steel storage racks represent a popular alternative to the more common selective racks when available space is restricted or when storing the same good. In drive-in racks, the forklift truck drives into the rack and stores the pallets on beam rails on the "first-in last-out" principle. Recent experimental studies have shown that by acting as horizontal ties between uprights, pallets significantly influence the structural behaviour of the rack. However, due to the uncertainty in the degree of friction between the rail beams and the pallets, current industry design practice does not consider this effect. This paper quantifies the influence …
An Experimental And Simulated Investigation Of Particle Flow Through A Conveyor Rock Box, David B. Hastie
An Experimental And Simulated Investigation Of Particle Flow Through A Conveyor Rock Box, David B. Hastie
Faculty of Engineering and Information Sciences - Papers: Part A
The use of rock boxes within conveyor transfers is not new, however, there is little published in the literature to aid in the design and implementation of rock boxes; instead mainly relying on prior knowledge and rules-of-thumb. A benefit of a rock box over other transfer types (e.g. soft loading chutes and impact plates) is their ability to capture material in such a way that it is only the initial feed of material which contacts chute walls or liners, with build-up of material creating a dominance of particle-particle interactions, thus reducing wear of the system and hence cost. This paper …
Free-Standing Nanocomposites With High Conductivity And Extensibility, Kyoung-Yong Chun, Shi Hyeong Kim, Min Kyoon Shin, Youn Tae Kim, Geoffrey M. Spinks, Ali E. Aliev, Ray H. Baughman, Seon Jeong Kim
Free-Standing Nanocomposites With High Conductivity And Extensibility, Kyoung-Yong Chun, Shi Hyeong Kim, Min Kyoon Shin, Youn Tae Kim, Geoffrey M. Spinks, Ali E. Aliev, Ray H. Baughman, Seon Jeong Kim
Faculty of Engineering and Information Sciences - Papers: Part A
The prospect of electronic circuits that are stretchable and bendable promises tantalizing applications such as skin-like electronics, roll-up displays, conformable sensors and actuators, and lightweight solar cells. The preparation of highly conductive and highly extensible materials remains a challenge for mass production applications, such as free-standing films or printable composite inks. Here we present a nanocomposite material consisting of carbon nanotubes, ionic liquid, silver nanoparticles, and polystyrene- polyisoprene-polystyrene having a high electrical conductivity of 3700 S cm -1 that can be stretched to 288% without permanent damage. The material is prepared as a concentrated dispersion suitable for simple processing into …
On-Chip High Sensitivity Laser Frequency Sensing With Brillouin Mutually-Modulated Cross-Gain Modulation, Feng Gao, R Pant, Enbang Li, Christopher G. Poulton, D Choi, Stephen J. Madden, B Luther-Davies, Benjamin Eggleton
On-Chip High Sensitivity Laser Frequency Sensing With Brillouin Mutually-Modulated Cross-Gain Modulation, Feng Gao, R Pant, Enbang Li, Christopher G. Poulton, D Choi, Stephen J. Madden, B Luther-Davies, Benjamin Eggleton
Faculty of Engineering and Information Sciences - Papers: Part A
We report the first demonstration of a photonic-chip laser frequency sensor using Brillouin mutually-modulated cross-gain modulation (MMXGM). A large sensitivity (∼9.5 mrad/kHz) of the modulation phase shift to probe carrier frequency is demonstrated at a modulation frequency of 50 kHz using Brillouin MMXGM in a ∼7 cm long chalcogenide rib waveguide. © 2013 Optical Society of America.
Spectral Triples For Hyperbolic Dynamical Systems, Michael F. Whittaker
Spectral Triples For Hyperbolic Dynamical Systems, Michael F. Whittaker
Faculty of Engineering and Information Sciences - Papers: Part A
Spectral triples are defined for C-algebras associated with hyperbolic dynam- ical systems known as Smale spaces. The spectral dimension of one of these spectral triples is shown to recover the topological entropy of the Smale space.
Microstructure And Texture Evolution In A Twinning-Induced-Plasticity Steel During Uniaxial Tension, Ahmed A. Saleh, Elena V. Pereloma, Azdiar A. Gazder
Microstructure And Texture Evolution In A Twinning-Induced-Plasticity Steel During Uniaxial Tension, Ahmed A. Saleh, Elena V. Pereloma, Azdiar A. Gazder
Faculty of Engineering and Information Sciences - Papers: Part A
A combination of electron back-scattering diffraction and X-ray diffraction was used to track the evolution of the microstructure and texture of a fully recrystallized Fe-24 Mn-3 Al-2 Si-1 Ni-0.06 C twinning-induced-plasticity steel during interrupted uniaxial tensile testing. Texture measurements returned the characteristic double fibre texture for face-centred cubic materials, with a relatively stronger 〈1 1 1〉 and a weaker 〈1 0 0〉 partial fibre parallel to the tensile axis. The interaction with the stable 〈1 1 1〉 oriented grains results in preferential plastic flow in the unstable 〈1 1 0〉 oriented grains. Consequently, the grains oriented along the 〈1 1 …
Addressing Retained Austenite Stability In Advanced High Strength Steels, Elena V. Pereloma, Azdiar A. Gazder, Ilana B. Timokhina
Addressing Retained Austenite Stability In Advanced High Strength Steels, Elena V. Pereloma, Azdiar A. Gazder, Ilana B. Timokhina
Faculty of Engineering and Information Sciences - Papers: Part A
Advances in the development of new high strength steels have resulted in microstructures containing significant volume fractions of retained austenite. The transformation of retained austenite to martensite upon straining contributes towards improving the ductility. However, in order to gain from the above beneficial effect, the volume fraction, size, morphology and distribution of the retained austenite need to be controlled. In this regard, it is well known that carbon concentration in the retained austenite is responsible for its chemical stability, whereas its size and morphology determines its mechanical stability. Thus, to achieve the required mechanical properties, control of the processing parameters …
Economical Data-Intensive Service Provision Supported With A Modified Genetic Algorithm, Lijuan Wang, Jun Shen
Economical Data-Intensive Service Provision Supported With A Modified Genetic Algorithm, Lijuan Wang, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part A
The explosion of digital data and the dependence on data-intensive services have been recognized as the most significant characteristics of the decade. Providing efficient mechanisms for optimized data-intensive services will become critical to meet the expected growing demand. In order to create a cost minimizing data-intensive service composition solution, we design two steps and two negotiation processes over the lifetime of a data-intensive service composition. The solution for the first step is presented in this paper. The proposed service selection algorithm is based on a modified genetic algorithm, which some modifications of crossover and mutation operators are adopted in order …
An Effective Methodology To Solve Inverse Kinematics Of Electroactive Polymer Actuators Modelled As Active And Soft Robotic Structures, Rahim Mutlu, Gursel Alici, Weihua Li
An Effective Methodology To Solve Inverse Kinematics Of Electroactive Polymer Actuators Modelled As Active And Soft Robotic Structures, Rahim Mutlu, Gursel Alici, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
Electroactive polymers (EAPs) generate highly non-linear deflections when they are used as actuators, which are known as artificial muscles. Though several modelling methods have been proposed before to understand their mechanical, chemical, electrical behaviours or 'electro-chemo-mechanical' behaviour, estimating the whole shape deflection of the EAP actuators has not been studied yet. Therefore, we report on (i) an effective methodology to estimate these actuators' whole shape deflection by employing a soft robotic actuator/manipulator approach and (ii) an angle optimization method, which we call AngleOPT, to accurately solve the EAP actuators' inverse kinematic problem. Laminated polypyrrole (PPy) EAP actuators are employed to …
Effect Of Annealing On Properties Of Carbonaceous Materials. Part Iii: Macro And Microstrengths, Xing Xing, Guangqing Zhang, Mark Dell'amico, George Ciezki, Qingbo Meng, Oleg Ostrovski
Effect Of Annealing On Properties Of Carbonaceous Materials. Part Iii: Macro And Microstrengths, Xing Xing, Guangqing Zhang, Mark Dell'amico, George Ciezki, Qingbo Meng, Oleg Ostrovski
Faculty of Engineering and Information Sciences - Papers: Part A
Carbonaceous materials including cokes, chars, and pyrolyzed coals were annealed at temperatures ranging from 973 K to 1773 K (700 C to 1500 C) in an inert atmosphere. Macro and microstrengths of original and annealed carbonaceous materials were characterized by the tensile strength and fracture toughness. Fracture toughness was determined for inert maceralderived component (IMDC) and reactive maceral-derived component (RMDC) using ultramicro indentation. Experimental data obtained by tensile tests were processed using the Weibull statistical method to find ‘‘inherent’’ strength. Tensile strength of chars and coals was significantly increased by annealing at temperatures ranging from 973 K to 1373 K …
Process Design Strategies For Producing Heavy Section Steel With Improved Quality, Jingwei Zhao, Zhengyi Jiang, Dongbin Wei, Chong Soo Lee
Process Design Strategies For Producing Heavy Section Steel With Improved Quality, Jingwei Zhao, Zhengyi Jiang, Dongbin Wei, Chong Soo Lee
Faculty of Engineering and Information Sciences - Papers: Part A
Uniformity of microstructure and mechanical properties is required for the heavy section steel. In the present work, a heavy section wind tower flange was manufactured by controlled ring-rolling. Post-rolling heat treatment was employed to optimize the microstructure and mechanical properties. The chemical composition, microstructure and mechanical properties in different zones of the flange were investigated. The results showed that the chemical composition and microstructure were uniformly distributed in the flange. The tensile strength showed similar values in different sampling locations. The strain and impact energies of specimens prepared along the longitudinal direction were higher than that prepared along both the …
Stochastic Volatility Models And The Pricing Of Vix Options, Joanna Goard, Mathew Mazur
Stochastic Volatility Models And The Pricing Of Vix Options, Joanna Goard, Mathew Mazur
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we examine and compare the performance of a variety of continuous- time volatility models in their ability to capture the behaviour of the VIX. The `3/2- model' with a di®usion structure which allows the volatility of volatility changes to be highly sensitive to the actual level of volatility is found to outperform all other popular models tested. Analytic solutions for option prices on the VIX under the 3/2- model are developed and then used to calibrate at-the-money market option prices.
Group Effects Of Piles Due To Lateral Soil Movement, Hongyu Qin, Wei Dong Guo
Group Effects Of Piles Due To Lateral Soil Movement, Hongyu Qin, Wei Dong Guo
Faculty of Engineering and Information Sciences - Papers: Part A
Laboratory model tests have been conducted to investigate the responses of piles subjected to lateral soil movement. The results of a single pile test and four tests on two piles arranged in a row perpendicular to the direction of soil movement are presented. The development of maximum bending moment, maximum shear force, and pile deflection with soil movement and the largest pile response profiles for the single pile and pile groups are compared. Group effect was evaluated using group factor which is defined in terms of the measured maximum bending moment. The major findings are (1) the pile head conditions …
Electroactive Polymers As Soft Robotic Actuators: Electromechanical Modeling And Identification, Rahim Mutlu, Gursel Alici, Weihua Li
Electroactive Polymers As Soft Robotic Actuators: Electromechanical Modeling And Identification, Rahim Mutlu, Gursel Alici, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part A
Biologically inspired robotic applications have recently received significant attention due to developments in novel materials and actuators with an operation principle similar to the natural muscles’. Electroactive polymer (EAP) actuators, also known as artificial muscles, possess extraordinary properties such as low efficiency consumption, compliance, bio-compatibility and ability to be miniaturized. Although several methodologies have been proposed for modeling and identification of their quasi-static bending behavior, a negligibly small attention has been given to their dynamic behavior. In this paper, we, therefore, report on their electromechanical modeling and parameter identification. We model the tri-layer EAP actuators as a soft robotic actuator …
Confinement Effect Of Frp And Transverse Steel On Retrofitting Square Concrete Columns, Le V. Doan, Xu Lei, Muhammad N. S Hadi, Thong M. Pham
Confinement Effect Of Frp And Transverse Steel On Retrofitting Square Concrete Columns, Le V. Doan, Xu Lei, Muhammad N. S Hadi, Thong M. Pham
Faculty of Engineering and Information Sciences - Papers: Part A
This study presents an experimental investigation into strain distribution of Fibre-Reinforced Polymer (FRP) in FRP-confined concrete columns with internal steel reinforcement under concentric and eccentric loading conditions. A total of nine reinforced concrete columns were cast and tested. Three of them were square in cross-section while the others were originally square but were shape-modified into circular columns with four pieces of segmental circular concrete covers and confined with three layers of CFRP. The nominal compressive strength of the segmental concrete covers was 40 MPa and 80 MPa. All columns were tested under concentric load, 25 mm or 50 mm eccentric …
Operations Strategy Processes: How Significant Are They?, Senevi Kiridena, Kalinga Jagoda, Howard Lin
Operations Strategy Processes: How Significant Are They?, Senevi Kiridena, Kalinga Jagoda, Howard Lin
Faculty of Engineering and Information Sciences - Papers: Part A
Ongoing challenges associated with the implementation of formally developed strategies call for studying the functional level strategy processes from fresh perspectives. This paper presents evidence drawn from the Canadian oil and gas industry towards establishing the statistical significance of alternative operations strategy processes and organisational contextual factors. The analysis discerned four strategy process configurations representing singular and multiple combinations of three strategy process modes identified in previous qualitative studies. The findings will help advance the understanding of operations strategy processes and may contribute to theory building, as the evidence was drawn from a relatively large sample of data representing an …
W^{M,P}-Solution (P ≥ 2) Of Linear Degenerate Backward Stochastic Partial Differential Equations In The Whole Space, Kai Du, Shanjian Tang, Qi Zhang
W^{M,P}-Solution (P ≥ 2) Of Linear Degenerate Backward Stochastic Partial Differential Equations In The Whole Space, Kai Du, Shanjian Tang, Qi Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
No abstract provided.
Fuzzy Control Of A Conjugated Polymer Actuator, Mohammadreza Sabetghadam, Mehmet Itik, Gursel Alici
Fuzzy Control Of A Conjugated Polymer Actuator, Mohammadreza Sabetghadam, Mehmet Itik, Gursel Alici
Faculty of Engineering and Information Sciences - Papers: Part A
Polypyrrole actuators may represent time varying and nonlinear dynamics as the solvent evaporation continuously affects their performance. Linear models can be used to design controllers for polypyrrole actuators to some extent but their performance may not be sufficient in order to comply with the requirements for applications where high precision is necessary. This paper proposes a Fuzzy Logic controller to improve the tracking performance of a trilayer polypyyrole conducting polymer actuator. As the fuzzy controller does not require a model for the system, the nonlinearities and uncertainties can be handled effectively. Experimental results show that fuzzy control improves the tracking …
Ontology-Based Search System Using Hierarchical Structure Design, Norasykin Mohd Zaid, Sim Kim Lau, Mohd Nihra Haruzuan Mohamad Said
Ontology-Based Search System Using Hierarchical Structure Design, Norasykin Mohd Zaid, Sim Kim Lau, Mohd Nihra Haruzuan Mohamad Said
Faculty of Engineering and Information Sciences - Papers: Part A
Major retrieval issues on conventional online database search systems faced by novice researchers are identified and described. An ontology-based search framework is proposed. The framework consists of five elements: (1) user, (2) query, (3) query interface, (4) search process, and (5) result. The query interface is designed based on the ontology hierarchical structure in the ontology datastore and is represented as keywords/sub-keywords structures in the query interface. Ontology enables relationships between keywords and terms to be defined. Ontology allows desired information to be retrieved by sharing common vocabularies with an understanding of meaning of terms in the domain. A prototype …
Two-Dimensional Cfd Modelling Of Gas-Decompression Behaviour, Alhoush Elshahomi, Cheng Lu, Guillaume Michal, Xiong Liu, Ajit R. Godbole, K K. Botros, Phillip Venton, Philip Colvin
Two-Dimensional Cfd Modelling Of Gas-Decompression Behaviour, Alhoush Elshahomi, Cheng Lu, Guillaume Michal, Xiong Liu, Ajit R. Godbole, K K. Botros, Phillip Venton, Philip Colvin
Faculty of Engineering and Information Sciences - Papers: Part A
ONE OF THE key issues in the design and construction of any gas pipeline is the prevention of material fracture. Since the gas is generally transported under high operating pressures, it must be ensured that the gas pipeline is sufficiently tough to arrest the propagation of any potential fracture. For several decades, control of gas pipeline fracture propagation has been under scrutiny due to economic considerations and ecological and safety hazards related to pressurised pipe failure. The Battelle Two Curve approach has been widely used to determine the minimum material arrest toughness by comparing the gas decompression wave velocity with …
Deposition Of Stellite 6 On Nickel Superalloy And Mild Steel Substrates With Laser Cladding, Alain Kusmoko, Druce P. Dunne, Huijun Li, David J. Nolan
Deposition Of Stellite 6 On Nickel Superalloy And Mild Steel Substrates With Laser Cladding, Alain Kusmoko, Druce P. Dunne, Huijun Li, David J. Nolan
Faculty of Engineering and Information Sciences - Papers: Part A
Stellite 6 was deposited by laser cladding of two different steel substrates (nickel superalloy and mild steel). The chemical compositions and microstructures of these coatings were characterized by atomic absorption spectroscopy, optical microscopy and scanning electron microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was examined using a pin-on-plate (reciprocating) wear testing machine. The results showed less cracking and pore development for Stellite 6 coatings applied to the mild steel (MS) substrate. Further, the Stellite coating on mild steel was significantly harder than that deposited on the superalloy. The wear test results showed …
Asset Management In The Energy Pipeline Industry In Australia, Richard Dwight, Tieling Zhang, Khaled O. El-Akruti
Asset Management In The Energy Pipeline Industry In Australia, Richard Dwight, Tieling Zhang, Khaled O. El-Akruti
Faculty of Engineering and Information Sciences - Papers: Part A
A review of asset management systems within the context of energy pipelines has been conducted. It covers available methodologies, current asset management systems, opportunities for improvement and research challenges. A particular point of interest is the degree to which consideration of remaining life and the influence of maintenance activities are used to drive the asset management strategy. Asset management within the energy pipeline industry is mostly concerned with integrity assurance. Irrespective of this overriding goal, cost of delivery is also of concern. At any point of the service life the remaining life of the pipeline at an acceptable level of …
A Note On Asymptotic Exponential Arbitrage With Exponentially Decaying Failure Probability, Kai Du, Ariel Neufeld
A Note On Asymptotic Exponential Arbitrage With Exponentially Decaying Failure Probability, Kai Du, Ariel Neufeld
Faculty of Engineering and Information Sciences - Papers: Part A
The goal of this paper is to prove a result conjectured in Follmer and Schachermayer (2007) in a slightly more general form. Suppose that S is a continuous semimartingale and satisfies a large deviations estimate; this is a particular growth condition on the mean-variance tradeoff process of S. We show that S then allows asymptotic exponential arbitrage wiith exponentially decaying failure probability, which is a strong and quantitative form of long-term arbitrage. In contrast to Follmer and Schachermayer (2007), our result does not assume that S is a diffusion, nor does it need any ergodicity assumption.
A Maximum Principle For Optimal Control Of Stochastic Evolution Equations, Kai Du, Qingxin Meng
A Maximum Principle For Optimal Control Of Stochastic Evolution Equations, Kai Du, Qingxin Meng
Faculty of Engineering and Information Sciences - Papers: Part A
A general maximum principle is proved for optimal controls of abstract semilinear stochastic evolution equations. The control variable and linear unbounded operators act in both drift and diffusion terms, and the control set need not be convex. Read More: http://epubs.siam.org/doi/abs/10.1137/120882433
The Tunable Wettability In Multistimuli-Responsive Smart Graphene Surfaces, Shanhong Wan, Jibin Pu, Xiaoqian Zhang, Liping Wang, Qunji Xue
The Tunable Wettability In Multistimuli-Responsive Smart Graphene Surfaces, Shanhong Wan, Jibin Pu, Xiaoqian Zhang, Liping Wang, Qunji Xue
Faculty of Engineering and Information Sciences - Papers: Part A
The tunable wettability of smart graphene films onto stainless steel substrates with a multi-response to different environmental stimuli has been investigated including light irradiation, pH, electric field, and annealing temperature. Conductive graphene film exhibited the controllable transition from water-repellent to water-loving characteristic in response to different environment fields, which primarily resulted from the morpho-chemically synergistic effect as well as the restoration of electronic stucture. Based on the fundamental theories of wettability, mechanisms in switching from hydrophobicity to hydrophilicity for smart graphene surface including thermal chemistry, electrostatic, photo-induced surface chemistry, solvent, and pH methods were presented.
Seismic Retrofit Of Rc Frames Through Beam-End Weakening In Conjunction With Frp Strengthening, J G. Teng, S S. Zhang, D H. Jing, X F. Nie, G M. Chen
Seismic Retrofit Of Rc Frames Through Beam-End Weakening In Conjunction With Frp Strengthening, J G. Teng, S S. Zhang, D H. Jing, X F. Nie, G M. Chen
Faculty of Engineering and Information Sciences - Papers: Part A
The strong column/weak beam requirement is now widely accepted in the design of reinforced concrete (RC) frames to achieve good seismic performance. However, many existing RC frames violate this requirement as they were designed according to inadequate design codes (generally previous codes). In particular, RC frames designed according to the previous Chinese codes for seismic design are likely to violate this requirement as the contribution of a cast-in-place floor slab in tension is not included in assessing the moment capacity of the beam in negative bending. This paper proposes three promising beam weakening techniques in combination with FRP strengthening to …
Bond-Slip Model For Interfaces Between Near-Surface Mounted Cfrp Strips And Concrete, S S. Zhang, J G. Teng, T Yu
Bond-Slip Model For Interfaces Between Near-Surface Mounted Cfrp Strips And Concrete, S S. Zhang, J G. Teng, T Yu
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a bond-slip model for interfaces between near-surface mounted (NSM) CFRP strips and concrete where debonding occurs due to cohesion failure in the concrete adjacent to the CFRP strip. This bond-slip model was derived on the basis of numerical results from a parametric study conducted using a verified 3-D meso-scale finite element (FE) model. In the proposed bond-slip model, the concrete compressive strength and the groove height-to-width ratio are the two main parameters: the former indicates how strong the concrete itself is while the latter represents the level of confinement provided by the surrounding concrete to the bonded …
Experimental Demonstration And Analysis Of Compact Silicon-Nanowire-Based Couplers, Hongqiang Li, Xiaye Dong, Yaoting Bai, Enbang Li, Yang Li, Yu Liu, Wenqian Zhou
Experimental Demonstration And Analysis Of Compact Silicon-Nanowire-Based Couplers, Hongqiang Li, Xiaye Dong, Yaoting Bai, Enbang Li, Yang Li, Yu Liu, Wenqian Zhou
Faculty of Engineering and Information Sciences - Papers: Part A
Compact 2 x 2 couplers based on silicon nanowires are fabricated and tested. They include a directional (X) coupler, a cross-gap coupler (CGC), and a multimode interference (MMI) coupler. The length of the X coupler's parallel film waveguide is 1 μm. The theoretical minimum excess loss of the X coupler is 0.73 dB, whereas its experimental value is 1.0817 dB. CGC has a coupling region length of 24 μm. The minimum excess loss of CGC, which is 0.6 dB in theory, is experimentally determined to be 0.6737 dB. Taper waveguides are used as input/output waveguides for the MMI coupler. The …
Exact Travelling Wave Solutions For Some Important Nonlinear Physical Models, Jonu Lee, Rathinasamy Sakthivel
Exact Travelling Wave Solutions For Some Important Nonlinear Physical Models, Jonu Lee, Rathinasamy Sakthivel
Faculty of Engineering and Information Sciences - Papers: Part A
The two-dimensional nonlinear physical models and coupled nonlinear systems such as Maccari equations, Higgs equations and Schrodinger-KdV equations have been widely applied in many branches of physics. So, finding exact travelling wave solutions of such equations are very helpful in the theories and numerical studies. In this paper, the Kudryashov method is used to seek exact travelling wave solutions of such physical models. Further, three-dimensional plots of some of the solutions are also given to visualize the dynamics of the equations. The results reveal that the method is a very effective and powerful tool for solving nonlinear partial differential equations …