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147 articles for “Coupling”
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Spatiotemporal Dynamics of 100 Coupled Lorenz Oscillators: A Comprehensive Analysis of Chaotic Pattern Formation
Abstract: Chaotic Lorenz systems that interact with one another, resulting in the generation of complex space-time patterns that evolve over time. This comprehensive analysis presents a detailed investigation of spatiotemporal chaos in a network of 100 coupled Lorenz oscillators, revealing the complex interplay between individual chaotic dynamics and collective behavior in nonlinear dynamical systems. Through numerical simulation and extensive analysis, we examine how coupling transforms individual butterfly attractors into rich spatiotemporal …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 12, Issue 1, 2026 · pp. 15–21 Read article
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DESIGN OF HIGH PERFORMANCE WIDE BAND COMPACT BRANCH LINE COUPLER USING PCB TECHNOLOGY
Abstract: This paper comprises designing of a wide band Branch Line Coupler by using PCB technology. The size is greatly reduced by using only patch on substrate without ground. The proposed designed coupler is working for 0-3 GHz frequency. The main concern of this paper to design and fabricate a compact branch line coupler with high performance and measured values well matched with simulation. The simulation can be achieved by using …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 1, 2017 · pp. 6–10 Read article
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Coupled Dynamics in Fluid-Structure Interaction Systems: A Review of Analytical and Computational Models
Abstract: Abstract: Fluid-Structure Interaction (FSI) systems embody the complex, coupled behavior between deformable or flexible structures and surrounding fluid flows. This interaction is inherently nonlinear and dynamic, posing significant challenges in modelling, simulation, and analysis. Understanding and accurately predicting the behavior of FSI systems is critical across a broad spectrum of engineering applications, including aerospace structures undergoing aeroelastic effects, underwater vehicles interacting with fluid currents, biomedical devices, such as heart valves …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 11, Issue 2, 2025 · pp. 1–5 Read article
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A Short Review Article on Knowledge and Attitude of Child Adoption among Infertile Couple
Abstract: Infertility is quite common among couples nowadays. The standard of living of today’s generation is one of the major causes that contribute to it. Infertility is referred to as the incompetence to conceive after 12 months of unprotected sexual intercourse. Having a child in a couple’s life is the greatest happiness a couple can experience. Due to this infertile couples can also look for child adoption as an alternative. Child …
Published in International Journal of Nursing Critical Care · Vol. 2, Issue 1, 2016 · pp. 64–67 Read article
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A Study to Evaluate the Effectiveness of Planned Teaching Programme on Knowledge Regarding Infertility and its Management among the Infertile Couple at Selected Infertility Clinic of Ahmedabad District Gujarat State
Abstract: This study was aimed to assess the knowledge of infertile couple before and after administration of planned teaching programme on infertility and its management in selected infertility clinic of Ahmadabad district of Gujarat state. A quasi-experimental study approach was used with one group pre-test post-test research design and conducted. Sample was selected by using non-probability convenient sampling technique. In view of the nature of the problem and accomplishment of the …
Published in International Journal of Obstetrics, Perinatal and Neonatal Nursing · Vol. 5, Issue 1, 2019 · pp. 62–67 Read article
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Effectiveness of Video-assisted Instruction on Awareness and Attitude regarding Emergency Contraceptives among the Eligible Couples Residing at Loni (Bk)
Abstract: Background: Despite the availability of highly effective method of contraception, many pregnancies are unplanned and unwanted. Such pregnancies can result in abortion and carry an excess risk of morbidity and mortality. The risk of pregnancy with one unprotected act of sexual intercourse can be as high as one in three, depending on the cycle of exposure in relation to ovulation. For the women exposed to unprotected sexual intercourse, e.g. Lack …
Published in International Journal of Obstetrics, Perinatal and Neonatal Nursing · Vol. 6, Issue 2, 2020 · pp. 46–54 Read article
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Application of Grouted Mechanical Couplers in Accelerated Bridge Construction
Abstract: This paper presents two research projects that investigated the performance of the grouted coupler connection details developed for accelerated bridge construction applications. The goal of the first project was to conduct laboratory test and evaluation of the grouted rebar coupler connections similar to those utilized on the Keg Creek Bridge on US Highway 6, the first replacement bridge in Iowa constructed entirely with modular and accelerated bridge construction technologies. The …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 1, 2022 · pp. 32–48 Read article
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A Wideband 3dB Hybrid Coupler for Operations in the C-band
Abstract: This study proposes and describes a novel wideband 3 dB directional coupler operating in the C-band (4–8 GHz). The proposed design was developed using microstrip technology with alumina being used as the dielectric, with a bandwidth of approximately 7 GHz (2–9 GHz), making it in theory, suitable for applications in the X-band (8–12 GHz) and L-band (1–2 GHz) as well. The increase in operational bandwidth was obtained by utilizing two …
Published in International Journal of Microwave Engineering and Technology · Vol. 4, Issue 2, 2018 · pp. 15–18 Read article
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Effects of Coupling Agent and Nanoclay on the Mechanical, Morphological and Dimensional Stability of Natural Fiber/Polypropylene Composites
Abstract: Polymer nanocomposite is made up of polymer as a matrix ingredient and reinforcement ingredient as a filler in the form of nanometer particles. These ingredients have dissimilar physical and chemical features and are mixed to generate sole features of nanocomposites. Polypropylene (PP) was nominated as the polymer matrix ingredient. Reinforcement ingredients used include organically modified montmorillonite with natural fiber. Various composites based on polypropylene, natural fiber, and organically modified montmorillonite …
Published in International Journal of Composite Materials and Matrices · Vol. 8, Issue 1, 2022 · pp. 9–18 Read article
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A Quasi-Experimental Study to Assess the Effectiveness of Self-Informational Module Regarding Knowledge and Attitude of Child Adoption among Infertile Couple in Selected Infertility Clinics in Punjab
Abstract: The birth of a child brings immense happiness to the parents and the whole family. However, couples who are infertile remain elusive to this happiness. Though there are different treatment strategies to overcome this problem, but these methods also remain futile in certain cases. Such couples should plan for adoption, which can also be a form of rehabilitation for the child as well. This study was done to assess the …
Published in International Journal of Nursing Critical Care · Vol. 2, Issue 1, 2016 · pp. 28–60 Read article
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A Study to Evaluate the Effectiveness of Planned Teaching Programme (PTP) on Knowledge Regarding Infertility among the Infertile Couple Seeking Treatment at Selected Infertility Clinics of Ahmedabad City, Gujarat State
Abstract: A study was conducted to assess the knowledge of infertile couple regarding the infertility and its management before and after administration of planned teaching programme. The investigator has chosen the quasi-experimental research design. Forty infertile couples of Reshambai Infertility Hospital, Shahibauag, and Shital Women’s Hospital, Ghatlodiya, Ahmedabad, are selected as a sample of the study. The data were analyzed using pre-test and post-test knowledge score and standard deviation. The various …
Published in International Journal of Obstetrics, Perinatal and Neonatal Nursing · Vol. 3, Issue 2, 2017 · pp. 14–18 Read article
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Microstrip Line Fed Capacitively Coupled Patch Antenna for Wireless Application
Abstract: In order to increase the impedance bandwidth for wireless local area network (WLAN) applications, aunique design of a microstrip line-fed, capacitively coupled, corner-truncated microstrip patch antenna isput forth, examined, and optimized in this research. The low profile, light weight, ease of manufacture,and compatibility with printed circuit technologies of microstrip patch antennas are well known.Conventional patch antennas' intrinsically small impedance bandwidth, however, is a significantdisadvantage that reduces their usefulness in broadband …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 1–9 Read article
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Analytical Modeling of Brick–Mortar Couplet
Abstract: This paper is a presentation of the finite element modeling of stress in a brick–mortar couplet. The brick–mortar couplet here serves as a meaningful substitute for a brick wall structure. In this work, the basic steps in derivation of the element stiffness matrix for a plane stress problem using the displacement approach are presented. The main purpose in the work is to verify the nodal displacements, which in turn would …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 1, 2020 · pp. 5–13 Read article
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A method to determine kinetic triplet by coupled with model-free method and model-fitting method
Abstract: The present study is aimed to obtain integral linear method using rational expressions given by Senum and Yang, and a method of selecting the reaction model more quickly and easily and compute the activation energy and pre- exponential factor more accurately was proposed. An improved linear integral procedure coupled with one model-free method and one model-fitting method for the determination of kinetic triplet using non-isothermal data recorded at several heating …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 1–13 Read article
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Elemental Profiling of Inkjet Printer Inks Extracted from Printed Documents Using Inductively Coupled Plasma-Mass Spectrometry
Abstract: Various methodologies have been used for the comparison and identification of source of printed documents. Although little work has been reported for the identification of a printed document on the basis of elements present in the ink of that document, due to the increased use of coloured printing inks, the current study is focused on the elemental profiling of coloured printer inks. This study provides a successful methodology for the …
Published in International Journal of Analytical and Applied Chemistry · Vol. 4, Issue 2, 2018 · pp. 23–32 Read article
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A Microstrip Rat-Race Coupler for Narrow-Band Operation in the X-Band
Abstract: This paper proposes, designs, describes, analyses, and simulates a novel microstrip rat-race coupler for narrow-band operations in the X-band (8 GHz to 12 GHz), namely the 9.5 GHz to 10.3 GHz sub-band. This proposed four-port passive microwave device was realized utilizing microstrip technology with pure copper (lossy) being used as a metal in the conducting layers (transmission and ground plates) and Rogers TMM6 (lossy) being used in the dielectric layer. …
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 1, 2021 · pp. 18–22 Read article
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Effect of Coupling Agent on Organoclay Dispersion in Polyethylene/Organoclay Nanocomposites for Packaging Industry
Abstract: Low-density polyethylene (LDPE) is one of the most widely used polymers in various fields, but due to the hydrophobic nature of LDPE, it is hard to prepare an LDPE/clay nanocomposite. In this article, an LDPE/organoclay nanocomposite, which can be used in the packaging industry, was prepared by melt-blending organoclay with a polymer matrix (LDPE) and compatibilizer, low molecular weight oxidized polyethylene. The influences of organoclay, and compatibilizer during melt mixing …
Published in International Journal of Composite Materials and Matrices · Vol. 9, Issue 1, 2023 · pp. 1–11 Read article
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Seismic Assessment of Reinforced Concrete Structures Coupled with O-Grid Bracing Systems
Abstract: The greatest challenge for structural engineers is to design the structures to be earthquake resistant. Basically, the earthquake-resistant design of reinforced concrete structures is a force-based design. When a structure is designed for seismic resistance, various systems are embedded into the structure so as to resist the lateral forces. One of the systems, which are used for resisting lateral forces, is to provide the structures with different types of bracings. …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 5, Issue 1, 2019 · pp. 4–13 Read article
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Effects of Industrial Waste Filler Content and Compatibilizer on the Performance of Thermoplastic Polymer Composites
Abstract: In this study, we examine the physico-mechanical characteristics of waste filler-thermoplastic polymer composites in relation to the industrial waste filler mixing ratio and compatibilizer concentrations. Three degrees of coupling agent (Epolene E-43) content and four levels of waste filler to thermoplastic polymer mixing ratios were used in the experiment to examine the physical and mechanical characteristics of the composite. As was to be predicted, composite density grew as waste filler …
Published in International Journal of Applied Nanotechnology · Vol. 9, Issue 2, 2023 · pp. 12–21 Read article
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A Wireless Power Transfer System Calibrated for Multiple Loads
Abstract: This research presents a novel wireless power transmission (WPT) model utilizing Lenz coils to effectively power multiple loads simultaneously. The increasing demand for efficient energy transfer in various applications, such as consumer electronics and medical devices, necessitates innovative solutions to enhance the performance of WPT systems. Through a series of experimental setups and simulations, we demonstrate that integrating Lenz coils significantly enhances coupling efficiency and reduces electromagnetic interference, leading to …
Published in International Journal of Electrical Power System and Technology · Vol. 11, Issue 1, 2025 Read article