Academic Articles & Research Papers

Complex Riemannian Spacetime: Removal of Black Hole Singularities and Black Hole Paradoxes

An approach is presented to resolve key paradoxes in black hole physics through the application of complex Riemannian spacetime. We extend the Schwarzschild metric into the complex domain, employing contour integration techniques to remove ...

Non-truncated strategy to exactly integrate the post-Newtonian Lagrangian circular restricted three-body problem

Abstract In this study, we present a novel non-truncated strategy by accompanying the fixed-point iteration with traditional numerical integrators. The proposed non-truncated strategy aims to exactly integrate implicit motion equations that...

Item analysis: basic concepts of physics students in geometric optics

The purpose of this study was to analyze students' items and abilities—the analysis for mapping test instruments and students' basic concepts regarding optics subjects before lectures are held. The test participants were 35 physics students...

Evidence for Enrichment of Niobium-92 in the Outer Protosolar Disk

The short-lived radionuclide, niobium-92 ( ^92 Nb), has been used to estimate the site of nucleosynthesis for p- nuclei and the timing of planetary differentiation, assuming that it was uniformly distributed in the early solar system. Here,...

Shocklets and Short Large Amplitude Magnetic Structures (SLAMS) in the High Mach Foreshock of Venus

Abstract Shocklets and short large‐amplitude magnetic structures (SLAMS) are steepened magnetic fluctuations commonly found in Earth's upstream foreshock. Here we present Venus Express observations from the 26th of February 2009 establishin...

Social Network Analysis of Editorial Board Interlocking Phenomena from the Perspective of Astronomy and Astrophysics Journals

Editorial board members (EBMs) of journals play a pivotal role in authentic international scientific journals. Editorial Board Interlocking (EBI) phenomenon reflects the effectiveness and importance of the scholarly journal's editorial boar...

Single-Step Electrochemical Aptasensor for Melatonin Detection in Unprocessed Plasma.

Zr Incorporation Into Lithium Nickel Oxides: Bulk or Surface Substitution?

Removal of the Water-Soluble Plastic Pollutant Poly(vinyl alcohol) Using Kaolinite: Physicochemical Effects and Adsorption Mechanisms.

Synthesis and Photoacoustic Characterization of Amphiphilic Ni(II) Phthalocyanines as Calorimetric References.

Double-bowtie filter design for pediatric spectral CT imaging: A fan beam simulation study.

Genomic Divergence and Variation in Developmental Plasticity Across Inselberg Populations of a Tropical Frog.

Carcinoma In Situ Skip Lesions of the Uterine Corpus in Cervical Squamous Cell Carcinoma: Impact on Target Setting in Radiotherapy.

Application of Convolutional Neural Network for Fault Diagnosis of Bearing Scratch of an Induction Motor

The demand for the condition monitoring of induction motors is increasing in various fields, such as industry, transportation, and daily life. Bearing faults are the most common faults, and many fault diagnosis methods have been proposed us...

Potential of Radioactive Isotopes Production in DEMO for Commercial Use

There is widespread use of nuclear radiation for medical imagery and treatments. Worldwide, almost 40 million treatments are performed per year. There are also applications of radiation sources in other commercial fields, e.g., for weld ins...

Change Detection for Hyperspectral Images Via Convolutional Sparse Analysis and Temporal Spectral Unmixing

With the increase in the availability of multitemporal hyperspectral images (HSIs), HSIs change detection (CD) methods, including pixel-level and subpixel-level based methods, have attracted great attention in recent years. However, the wid...

Enhanced diamagnetism by energetic tail electrons in a magnetized plasma

Measurement of an internal azimuthal plasma current in a collisionless low β plasma expanding in a magnetic nozzle is presented. The electric field is removed from the plasma ensuring a negligible electron E×B drift resulting in a purely di...

Embodied science and mixed reality: How gesture and motion capture affect physics education

Abstract A mixed design was created using text and game-like multimedia to instruct in the content of physics. The study assessed which variables predicted learning gains after a 1-h lesson on the electric field. The three manipulated varia...

Spacing Allocation Method for Vehicular Platoon: A Cooperative Game Theory Approach

Recently, spacing policies of the vehicular platoon have been widely developed to enhance safety, traffic efficiency, and fuel consumption. However, the integrated spacing policies aim to maximum overall benefit, and the distributed spacing...

Dielectric and impedance spectroscopic studies of three phase graphene/titania/poly(vinyl alcohol) nanocomposite films

Flexible dielectric polymer composites with high dielectric permittivity and low dielectric loss have many applications in different areas of electronic industry. In this paper, we propose synthesis of flexible dielectric materials with eff...