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1962 articles for “Field” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Comprehensive study of Entanglement Entropy in Quantum Field Theory: Analysis of Conformal Field Theory to Massive Field Extensions and Holographic Entanglement
Abstract: This paper provides an in-depth analysis of entanglement entropy (EE) in quantum field theory (QFT), with a particular focus on its computation using the replica trick and its applications to both conformal and non-conformal systems. Beginning with an introduction to the basics of QFT, the study explains how entanglement entropy quantifies the quantum correlations between subsystems in a pure state, represented by the von Neumann entropy of the reduced density …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 3, 2024 · pp. 33–58 Read article
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Wax Deposition Modeling and Comparison with Field Data for Some Indian Oil Fields
Abstract: One of the major determinants for flow assurance of crude oil is its constitution and involves successful management of solid deposits. Major challenges in flow assurance are adequate selection of production equipment and pipelines. Control of wax deposition and its challenge can be met with better prediction through wax modeling. Precipitation of paraffin out of supersaturated crude oil mixture is responsible for wax deposits in pipelines. The authors have seen …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 1, 2017 · pp. 1–15 Read article
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Speed Estimator for Sensorless Field-Oriented Control Induction Motor Drive Using Intelligent Neural Networks
Abstract: This paper presents a novel approach to the field-oriented control (FOC) of induction motor drives. It discusses the introduction of artificial neural networks (ANNs) for decoupling control of induction motors using FOC principles. The neural network has been then designed and trained online by employing a back propagation network (BPN) algorithm. The estimator was designed and simulated in Matlab/Simulink. Simulation result shows a good performance of speed estimator. Simulation results …
Published in Journal of Control & Instrumentation · Vol. 6, Issue 3, 2015 · pp. 42–49 Read article
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GaN-based Sub-10 nm Metal-Oxide-Semiconductor Field-Effect Transistors
Abstract: Gallium nitride (GaN) based metal-oxide semiconductor field-effect transistors (MOSFETs) are promising for digital logic applications. The performance has been evaluated with different gate lengths (7~10 nm). The gate voltage is varied to turn ON and turn OFF at 1 and 0 V, respectively. For a gate length of 10 nm, the ON-current (ION) and OFF-current (IOFF) are found to be 6.86 mA/μm and 5.15x10-7 A/μm, respectively with a applied drain …
Published in Journal of Semiconductor Devices and Circuits · Vol. 3, Issue 1, 2016 Read article
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Simulation Study of Process Variations in Double Gate Junctionless Field-Effect Transistors
Abstract: This work discusses the process variations in symmetrical double-gate (DG) junctionless (JL) field-effect transistors (FETs) by device simulation. Output I-V characteristics along with subthreshold slope increase, DIBL variations with drain voltage and threshold voltage shift variations are systematically analyzed with the general variability issues including oxide thickness, channel thickness and doping concentration. Potential distribution in the body channel region is also analyzed. Optimum values of the variability factors are considered …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 2, 2015 · pp. 18–27 Read article
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Multipole Magnetic Field Lines Interaction of Neutron Stars
Abstract: In this paper, we present the magnetic field of the collapsed core during a massive star supernova explosion, resulting from the conservation of magnetic flux, which forms a strong magnetic fields (B∽1013 G) Neutron stars. The vector potential from moving electric charge Q uniformly distributed over the surface of the spherical Neutron star of radius R and the multipole magnetic field have calculated. The interaction between the dipole magnetic field …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 2, 2020 · pp. 6–15 Read article
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TITLE - COMPUTATIONAL TECHNIQUES FOR SOLVING 1D FIELD PROBLEMS. i.e. (structural problems)
Abstract: Numerical methods in field of applied mathematics and applied physics are well known tools for solution of various disciplinary and interdisciplinary field problems with different boundary conditions such as solid mechanics, heat transfer, fluid mechanics and soil mechanics etc. This paper aims for successfully framework to get feasible one-dimensional solutions of field problems (i.e. solid mechanics) with finite difference method, finite element method and their comparison with analytical (exact) solutions. …
Published in Trends in Mechanical Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 32–38 Read article
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Phase – Field Modeling of Brittle and Ductile Fracture Under Complex Loading Conditions
Abstract: Phase-field modeling has emerged as a powerful computational framework for predicting fracture behavior in engineering materials, offering a unified description of crack initiation, propagation, branching, and coalescence without the need for explicit crack tracking. This study presents an in-depth examination of phase-field modeling applied to both brittle and ductile fracture under complex loading conditions, including multiaxial stress states, cyclic loading, thermal gradients, and dynamic impact. The phase-field approach regularizes the …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 3, Issue 2, 2025 · pp. 13–18 Read article
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Microvita‑Inspired Informational Field Dynamics as a Nonlinear Signal‑Generation Mechanism in Matter–Life–Mind Systems
Abstract: Recognizing how matter, life, and consciousness relate to one another continues to be among the most essential challenges faced by modern science. Contemporary physical theories successfully describe the behavior of elementary particles and large-scale cosmological structures, yet they do not fully explain the emergence of informational complexity and organized patterns observed in biological and cognitive systems. This study proposes a theoretical framework in which Microvita are interpreted as subtle informational …
Published in Current Trends in Signal Processing · Vol. 16, Issue 1, 2026 · pp. 34–49 Read article
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Integrated Production Modeling an Asset for Designing a Development Program of a Field: A Case Study
Abstract: Current challenging scenario of environment and technologies causing Oil/Gas industry to focus on designing the development program of a field that is only possible with the help of Integrated Production modeling accurately. Managing the reservoirs through correct modeling can lead to best destinations. IPM provides key understanding of field from reservoir to separator conditions. It can provide best communication between wellbore and surface facilities Hence it can provide best economical …
Published in Journal of Offshore Structure and Technology · Vol. 1, Issue 1, 2014 · pp. 12–24 Read article
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Flares and Fields: Sun's Impact on Earth
Abstract: This paper delves into the multifaceted motivations driving the study of the Sun, exploring its pivotal role in shaping Earth's climate, influencing space weather dynamics, and serving as a key astronomical entity in our cosmic neighborhood. Investigating the Sun as a physical laboratory, the discussion unfolds the intricate processes of nuclear fusion and magnetic fields, unveiling technological and research pursuits with potential applications in clean energy and space exploration. Examining …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 13, Issue 3, 2024 · pp. 1–12 Read article
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Analysis of Field Distribution in Optical Fibre Using FEM Method
Abstract: The application of the linear Finite Element Method (FEM) to the analysis of the field distribution in optical fibres is examined in this work. Characterizing fibre characteristics like mode profiles, propagation constants, and dispersion, all of which are critical for maximizing fibre performance in a variety of applications like sensing and telecommunications, requires an understanding of the distribution of electric and magnetic fields. In order to accurately determine the modal …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 2, 2025 · pp. 31–40 Read article
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Algebraic Foundations of AES (Advanced Encryption Standard): Group Theory and Finite Field Applications in Symmetric Cryptography
Abstract: This paper presents a mathematical study of symmetric cryptographic algorithms, with a particular emphasis on the Advanced Encryption Standard (AES), which is one of the most widely used encryption schemes in modern security applications. The study highlights how abstract mathematical frameworks such as group theory, finite fields, and vector space concepts provide the foundation for the design, implementation, and analysis of AES. By approaching the algorithm from a mathematical perspective, …
Published in Recent Trends in Mathematics · Vol. 2, Issue 1, 2025 · pp. 12–16 Read article
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Revolutionizing Optical Fibre Field Distribution with Linear Finite Element Method
Abstract: This study investigates the use of the linear Finite Element Method (FEM) for the analysis of the field distribution in optical fibres. Understanding the distribution of electric and magnetic fields is necessary to characterise fibre properties including mode profiles, propagation constants, and dispersion, all of which are essential for optimising fibre performance in a range of applications like sensing and telecommunications. This study emphasises on applying a linear FEM formulation …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 3, 2025 · pp. 32–42 Read article
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Detection of Fault and Protection of Faulted Distribution Feeder with Field Programmable Gate Array Using State Diagrams
Abstract: A hardware-efficient algorithm for fast fault-detection in feeders radiating out of a distribution substation and its subsequent clearance from the system for safe operation of the healthy parts has been presented in the paper. State diagrams used to design the circuit.The general purpose SPARTANE 3AN FPGA kit has been employed for developing the protective over-current relay. All the coding has been done using the hardware description language VERILOG. To avoid …
Published in Journal of Microcontroller Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 5–12 Read article
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A Novel Architecture of Control System Processor Using Field Programmable Gate Array
Abstract: This paper presents a reconfigurable architecture of control system processor. The performance of the proposed architecture has been evaluated by taking different controllers and phase lead and phase lag networks. We designed the architecture of the processor and realizing the architecture using adder, multiplier, delay unit and validate it in the FPGA, which show that the hardware scheme is feasible for practical application. The experimental results clearly reveal the novelty …
Published in Journal of Microcontroller Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 13–20 Read article
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H-Component residual Geomagnetic field variation at low and equatorial stations during the geomagnetic storm of May 29-31, 2003
Abstract: The variation of the H-component residual geomagnetic field during the storm of 29-31 May, 2003 has been studied for features of induced current at low and equatorial stations. Five stations (three from the Indian chain of stations) lying close to the dip equator but within less than 7 hrours apart were used to investigate the nature of the response of the ground stations to possible induced fields other than the …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 3, 2019 · pp. 56–62 Read article
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Noise-Driven Collective Behavior in Mean-Field Coupled Lorenz Oscillator Networks
Abstract: This work investigates the spatiotemporal dynamics of an ensemble of 100 identical Lorenz oscillators coupled through a mean-field scheme in the presence of additive noise. Building on prior studies of spatiotemporal chaos in coupled Lorenz arrays and mean-field coupled chaotic oscillators, the focus is on how the competition between deterministic coupling and stochastic forcing shapes collective behavior, including complete synchronization, desynchronization, clustered states, and noise-modified spatiotemporal chaos. The governing equations …
Published in International Journal of Advanced Control and System Engineering · Vol. 4, Issue 2, 2026 Read article
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Effect of Magnetic Field on Casting Parameters
Abstract: AbstractThe casting process is one of the oldest manufacturing methods involving squeezing / jolting the green sand used as moulding material, and further was developed with use of binders such as clay/organic resins. The constants search for newer moulding material lead to the magnetic mould involving steel shots and application of magnetic field. The preliminary trials on one of the process parameters i. e. Magnetic field was carried out and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 3, 2018 · pp. 30–35 Read article
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Modeling and Optimization of Continuous Gas Lift Performance in Libya Oil Field
Abstract: With a massive number of oil and gas field becoming mature, the upstream engineering is facing new challenge. How to develop , or at least steady production while keeping obtainable reserves at their existing level, As matter of fact unstable production in gas lift wells. The Key issues most operators encounter with oil fields are the effects of high water production that may lead to wells died and decrease in …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 40–48 Read article