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Journal articles on the topic 'Ω-automates'

Author: Grafiati

Published: 25 May 2024

Last updated: 19 July 2025

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1

Brkić, Dejan, and Zoran Stajić. "EXCEL VBA-BASED USER DEFINED FUNCTIONS FOR HIGHLY PRECISE COLEBROOK’S PIPE FLOW FRICTION APPROXIMATIONS: A COMPARATIVE OVERVIEW." Facta Universitatis, Series: Mechanical Engineering 19, no. 2 (2021): 253. http://dx.doi.org/10.22190/fume210111044b.

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This review paper gives Excel functions for highly precise Colebrook’s pipe flow friction approximations developed by users. All shown codes are implemented as User Defined Functions – UDFs written in Visual Basic for Applications – VBA, a common programming language for MS Excel spreadsheet solver. Accuracy of the friction factor computed using nine to date the most accurate explicit approximations is compared with the sufficiently accurate solution obtained through an iterative scheme which gives satisfying results after sufficient number of iterations. The codes are given for the presented

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Sasaki, H., H. Nishinaka та K. Shida. "Automated measurement system for 1-Ω standard resistors using a modified Wheatstone bridge". IEEE Transactions on Instrumentation and Measurement 40, № 2 (1991): 274–77. http://dx.doi.org/10.1109/tim.1990.1032936.

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3

Ouameur, Mohamed, Renata Vasconcellos, and Mohamed Agazar. "Digital Impedance Bridge for Four-Terminal-Pair AC Resistor Calibration up to 20 kHz." Metrology 4, no. 1 (2024): 1–14. http://dx.doi.org/10.3390/metrology4010001.

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For this study, a substitution principle-based impedance bridge has been developed to calibrate AC resistors in a four-terminal-pair (4TP) configuration. The calibration is performed in the full complex plane for resistances ranging from 100 mΩ to 400 Ω and frequencies of between 50 Hz and 20 kHz. The automated bridge is based on four resistors associated with two high-impedance stages. The balancing of the bridge is achieved by means of PXI modules. The bridge is automatically balanced via a simplex top-down algorithm. The new bridge is primarily used for the measurement chain of AC standard

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De Rosa, Pierluigi, Andrea Fredduzzi, and Corrado Cencetti. "Stream Power Determination in GIS: An Index to Evaluate the Most ’Sensitive’Points of a River." Water 11, no. 6 (2019): 1145. http://dx.doi.org/10.3390/w11061145.

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This paper focuses on the problem of measuring stream power in a hydrographic network using the original definition provided by Bagnold in 1996. Recent digital elevation models have enabled the calculation of channel gradients and, consequently, stream power with a finer spatial resolution, and this has created promising and novel opportunities to investigate river geomorphological processes and forms. The work carried out in this study includes defining and implementing a methodological approach that could be automated within a geographic information system and that meets two requirements: (1

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Nie, Pei, Bin Pan, Muhammd Jamil Ahmad, et al. "Summer Buffalo Milk Produced in China: A Desirable Diet Enriched in Polyunsaturated Fatty Acids and Amino Acids." Foods 11, no. 21 (2022): 3475. http://dx.doi.org/10.3390/foods11213475.

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The objective of the study was to compare and reveal differences in basic chemical parameters, fatty acids, amino acids, and lipid quality indices of crossbred buffalo (swamp x river type) milk produced in summer and winter. The buffalo milk samples were collected in summer (Jul–Aug) and winter (Dec–Jan) from Hubei province, China. The samples were detected by using CombiFoss apparatus, gas chromatography, and an automated specialized amino acid analyzer. The results showed that the basic chemical parameters, fatty acid profiles, lipid quality indices, and amino acid profiles of crossbred buff

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Štambuk, Igor. "Precison Automated Measuring System for Accurate Comparison of Resistance Standards and Shunts." Journal of Energy - Energija 67, no. 1 (2022): 19–22. http://dx.doi.org/10.37798/201867187.

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In this paper we will present a development of Measurement system for accurate comparison of low resistance standards and AC shunts ranging from 0.1 mΩ to 10 Ω as well as system testing and use. The system consists of a specially built current source, range selector, current reversal module and low cost analog to digital converter. The entire measurement procedure is automated and controlled by LabVIEW program. Subsequent testing has shown that the realized precision resistance measurement system has achieved precision comparable to more expensive commercial devices. The system or system eleme

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Osichev, Alexander, and Andrii Tkachenko. "APPLICATION OF THE MAPLE PACKAGE FOR ANALYTICAL TRANSFORMATIONS FOR CALCULATION AND PLOTING OF STATIONARY MODES OF INDUCTION MOTORS AND ELECTRIC DRIVES." Energy saving. Power engineering. Energy audit., no. 1-2(179-180) (May 10, 2023): 3–14. http://dx.doi.org/10.20998/2313-8890.2023.01.01.

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A program was developed in the package of symbolic transformations Maple. It provides automated formulas and graphing of basic characteristics of IM motors in a convenient form for the electrical engineer and student: M(s), ω(M), ω(I), I(s); cosφ=f(s) and φ(s) for stator currents, rotor currents, magnetizing circuit, machine efficiency η (s) and a number of other characteristics. The calculation is based on the substitution scheme of IM motors in its different variants: with one circuit in the rotor, with two or more circuits in the rotor, taking into account the skin effect in the rotor rods

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Wang, Xiaodong. "Simultaneous measurement of pole figure and residual stress for polycrystalline thin films: ω–φ′ compensated grazing-incidence diffraction in side-inclination mode". Journal of Applied Crystallography 54, № 5 (2021): 1424–36. http://dx.doi.org/10.1107/s1600576721008335.

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A new grazing-incidence diffraction (GID) measurement geometry between in plane and out of plane is proposed. It is improved from the previous ω–φ compensated GID in side-inclination mode for measurement of residual stress in polycrystalline thin films [Wang & van Riessen (2017). Powder Diffr. 32, S9–S15]. Instead of keeping a constant azimuthal direction of the incident beam on the thin film sample, the current proposed variation maintains a constant azimuthal direction of the scattering vector projection on the thin film sample. The variation is named `ω–φ′ compensated GID in side-inclin

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Ritter, Benedikt, Andreas Vogt, and Tibor J. Dunai. "Technical Note: Noble gas extraction procedure and performance of the Cologne Helix MC Plus multi-collector noble gas mass spectrometer for cosmogenic neon isotope analysis." Geochronology 3, no. 2 (2021): 421–31. http://dx.doi.org/10.5194/gchron-3-421-2021.

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Abstract. We established a new laboratory for noble gas mass spectrometry that is dedicated to the development and application to cosmogenic nuclides at the University of Cologne (Germany). At the core of the laboratory are a state-of-the-art high-mass-resolution multicollector Helix MC Plus (Thermo Fisher Scientific) noble gas mass spectrometer and a novel custom-designed automated extraction line. The mass spectrometer is equipped with five combined Faraday multiplier collectors, with 1012 and 1013 Ω pre-amplifiers for faraday collectors. We describe the extraction line and the automated pro

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Potap, О. Yu, and А. V. Ivanichyk. "The accuracy of rolling thickness adjustment in conditions of high-frequency disturbances taking into account the speed of roll setting devices." Fundamental and applied problems of ferrous metallurgy 36 (2022): 299–307. http://dx.doi.org/10.52150/2522-9117-2022-36-299-307.

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In the continuous mills, where the strip thickness at the entrance contains a high-frequency component caused by the eccentricity of the rolls of the previous cage, the effectiveness of AGC-systems for regulating the thickness of the rolled product depends on the speed of operation of hydraulic roll setting devices (HRSD). Analytical substantiation of the transfer functions of the AGC-system by the eccentricity of the rolls and by the thickness of the undercut, taking into account the real speed of the HRSD has been carried out. The frequency characteristics of the AGC-system are analytically

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Buchmeier, Guilherme Germano, Alexandru Takacs, Daniela Dragomirescu, Juvenal Alarcon Ramos, and Amaia Fortes Montilla. "Optimized NFC Circuit and Coil Design for Wireless Power Transfer with 2D Free-Positioning and Low Load Sensibility." Sensors 21, no. 23 (2021): 8074. http://dx.doi.org/10.3390/s21238074.

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This paper proposes a method for optimizing and designing a wireless power transfer system operating at 13.56 MHz. It can be used as guidelines for designing coils for the new-trending technology that enables NFC devices to not only to communicate but also to charge. Since NFC wireless charging is an emerging technology, it is of interest to propose optimizations and a dedicated circuit design for such systems. This work proposes an optimization procedure to calculate the dimensions of a transmitter and receiver pair that assures the highest efficiency while considering all possible positions

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Abdullahi, M., L. S. Kuburi, P. T. Zubairu, U. Jabo, A. A. Yahaya, and Y. James. "Effect of Heat Treatment and Sulfuric Acid Anodization on Corrosion Resistance of Aluminum Alloy (AA7075)." Nigerian Journal of Technology 40, no. 1 (2021): 56–62. http://dx.doi.org/10.4314/njt.v40i1.9.

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This paper, studied the effect of heat treatment and anodization on corrosion resistance of aluminum alloy 7075 (AA7075), with a view to improving its corrosion resistance. Microstructure and micro hardness of the anodic film of the samples were studied with the aid of optical metallurgical microscope and automated micro hardness testing machine. Linear polarization methods were used to assess the corrosion behaviour of the alloy in 0.5M HCl. The microstructure of the annealed sample showed formation of dendrites while precipitation hardened samples in palm kernel oil and SAE 40 engine oil sho

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Serrano-Pérez, Javier, Inocencia Pacheco-Chávez, Monica Araceli Camacho-González, Omar Serrano-Pérez, and Jaime Pacheco-Martínez. "Dip-coater revolver machine for layer processing on metallic substrates." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 11, Especial5 (2023): 109–16. http://dx.doi.org/10.29057/icbi.v11iespecial5.11694.

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This work presents the design and construction of a dip-coater revolver machine to manufacture homogeneous coatings on metallic substrates. The material used for the fabrication of the machine structure was 6061-T6 aluminum. A Nema 23 stepper motor of 4.2 A and 24 V with a speed reducer with a 10:1 ratio that can provide an angular velocity ω between 1-80 rpm was used for the motion system. DC linear actuator was used for the immersion process, which operates in the range of 12-24 V at 7 A, with a stroke length of 50 mm and a maximum linear speed of 12 mm/s. For the coating tests, SayerLack® b

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STAROSTIN, A. S., and V. S. ARTEMYEV. "SPECTRAL ANALYSIS IN AUTOMATED INFORMATION SYSTEMS." Computational Nanotechnology 12, no. 1 (2025): 69–78. https://doi.org/10.33693/2313-223x-2025-12-1-69-78.

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This article discusses methods of spectral analysis and application in automated information systems, in the frequency domain using the Fourier transform. The authors have developed mathematical models that allow formalizing control and information processing problems in applied areas. The study of the equations proves that the shift of the system in time and the subsequent application of the Fourier transform allows to simplify the analysis of processes and find optimal control actions. The application of spectral methods has made it possible to efficiently find solutions to control problems,

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Pâris, Isabelle, Patrick Petitjean, Éric Aubourg, et al. "The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release." Astronomy & Astrophysics 613 (May 2018): A51. http://dx.doi.org/10.1051/0004-6361/201732445.

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We present the data release 14 Quasar catalog (DR14Q) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). This catalog includes all SDSS-IV/eBOSS objects that were spectroscopically targeted as quasar candidates and that are confirmed as quasars via a new automated procedure combined with a partial visual inspection of spectra, have luminosities Mi [z = 2] < −20.5 (in a Λ CDM cosmology with H0 = 70 km s−1 Mpc−1, Ω M =0.3, and Ω Λ = 0.7), and either display at least one emission line with a full width at half maximum larger than 500

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Zhang, Dongliang, and Hanming Tao. "Bearing Fault Diagnosis Based on Parameter-Optimized Variational Mode Extraction and an Improved One-Dimensional Convolutional Neural Network." Applied Sciences 14, no. 8 (2024): 3289. http://dx.doi.org/10.3390/app14083289.

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When faults occur in rolling bearings, vibration signals exhibit sensitivity to periodic impact components, susceptibility to complex background noise, and non-stationary and nonlinear characteristics. Consequently, using traditional signal processing methods to effectively identify bearing faults presents significant challenges. To facilitate the accurate fault diagnosis of bearings in noisy conditions, we propose an intelligent fault diagnosis method using the Archimedes optimization algorithm (AOA), coupled with a one-dimensional multi-scale residual convolutional neural network (1D-MRCNN),

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Galliana, F., P. Capra, R. Cerri, et al. "Automated DC voltage and DC resistance real-time multiple standard for artifact calibration of calibrators and multimeters." Journal of Instrumentation 20, no. 02 (2025): P02002. https://doi.org/10.1088/1748-0221/20/02/p02002.

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Abstract An automated temperature-controlled electrical DC voltage and DC resistance multiple reference standard (MRS) has been developed by Measurements International (MI) with the scientific support from the Istituto Nazionale di Ricerca Metrologica (INRIM). The MRS includes a 10 V, a 1 Ω, and a 10 kΩ standards selectable via a switch unit. This setup allows the artifact calibration of high-end calibrators and multimeters used in low-frequency electrical measurements. The two resistors are high-stability standards from MI, while the 10 V standard is based on a low-noise circuit developed by

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Norman, Charles E., Elias M. Absi, and Raye E. Thomas. "Solar-grade silicon substrates by a powder-to-ribbon process." Canadian Journal of Physics 63, no. 6 (1985): 859–62. http://dx.doi.org/10.1139/p85-139.

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A new technique for producing silicon ribbons for solar-cell substrates is described. The process begins with inexpensive, 98% pure silicon that is crushed and acid leached to raise the purity to 99.9%. This powder is spread on a graphite plate and electron-beam annealed to form a flat, self-supporting "preribbon." After removal of the graphite and unmelted powder, the preribbon is given a second electron-beam scan that recrystallizes the silicon into a smooth polycrystalline ribbon. This zone melting further improves the purity to over 99.99%.Ribbons 0.4 mm thick and up to 16 mm wide were pro

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Eggers, C., A. Holstein, C. Schneider, et al. "123I-FP-CIT SPECT imaging of the dopaminergic state." Nuklearmedizin 51, no. 06 (2012): 244–51. http://dx.doi.org/10.3413/nukmed-0449-11-12.

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Summary123I-N-ω-fluoropropyl-2β-carbomethoxy-3β- (4-iodophenyl)nortropan (123I-FP-CIT) single photon emission computed tomography (SPECT) can be evaluated by both visual assessment and quantitative analysis to assess the striatal dopamine state in vivo. The aim of our study was to investigate if visual assessment according to a predefined image grading scale reflects the results of quantitative assessment techniques. Patients, methods: 195 patients with a clinical diagnosis of idiopathic Parkinson's disease (n = 134), atypical parkinsonian syndrome (n = 47) or essential tremor (n = 14) were ex

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Ahnström, Josefin, Helena M. Andersson, Kevin Canis та ін. "Activated protein C cofactor function of protein S: a novel role for a γ-carboxyglutamic acid residue". Blood 117, № 24 (2011): 6685–93. http://dx.doi.org/10.1182/blood-2010-11-317099.

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Abstract Protein S has an important anticoagulant function by acting as a cofactor for activated protein C (APC). We recently reported that the EGF1 domain residue Asp95 is critical for APC cofactor function. In the present study, we examined whether additional interaction sites within the Gla domain of protein S might contribute to its APC cofactor function. We examined 4 residues, composing the previously reported “Face1” (N33S/P35T/E36A/Y39V) variant, as single point substitutions. Of these protein S variants, protein S E36A was found to be almost completely inactive using calibrated automa

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Zeng, Lifang, Dingyi Pan, Shangjun Ye, and Xueming Shao. "A fast multiobjective optimization approach to S-duct scoop inlets design with both inflow and outflow." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 9 (2018): 3381–94. http://dx.doi.org/10.1177/0954410018795806.

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A fast multiobjective optimization method for S-duct scoop inlets considering both inflow and outflow is developed and validated. To reduce computation consumption of optimization, a simplified efficient model is proposed, in which only inflow region is simulated. Inlet pressure boundary condition of the efficient model is specified by solving an integral model with both inflow and outflow. An automated optimization system integrating the computational fluid dynamics analysis, nonuniform rational B-spline geometric representation technique, and nondominated sorting genetic algorithm II is deve

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Buele, Jorge, Ángel Ramón Sabando-García, Bosco Javier Sabando-García, and Hugo Yánez-Rueda. "Ethical Use of Generative Artificial Intelligence Among Ecuadorian University Students." Sustainability 17, no. 10 (2025): 4435. https://doi.org/10.3390/su17104435.

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Artificial intelligence has transformed educational environments by facilitating processes such as information retrieval, assisted writing, automated feedback, and personalized tutoring. Within university settings, the adoption of technologies capable of autonomously generating content has increased rapidly, becoming a common academic resource for students. However, this accelerated integration poses ethical challenges, particularly when such tools are used without a clear understanding of their implications. This study aimed to examine how students’ emotional attitudes (affective), understand

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Hammer, Christof, Johannes Warmer, Stephan Maurer, Peter Kaul, Ronald Thoelen, and Norbert Jung. "A Compact 16 Channel Embedded System with High Dynamic Range Readout and Heater Management for Semiconducting Metal Oxide Gas Sensors." Electronics 9, no. 11 (2020): 1855. http://dx.doi.org/10.3390/electronics9111855.

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The simultaneous operation of multiple different semiconducting metal oxide (MOX) gas sensors is demanding for the readout circuitry. The challenge results from the strongly varying signal intensities of the various sensor types to the target gas. While some sensors change their resistance only slightly, other types can react with a resistive change over a range of several decades. Therefore, a suitable readout circuit has to be able to capture all these resistive variations, requiring it to have a very large dynamic range. This work presents a compact embedded system that provides a full, hig

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Nobrega, Raphael Borges, Valmir Nascimento Júnior, Ítalo Oliveira Medeiros, Edson Guedes Costa, and Ronimack Trajano Souza. "Concepção de um sistema de automação e monitoramento para equipamento utilizado em ensaios de trilhamento elétrico e erosão." Revista Principia - Divulgação Científica e Tecnológica do IFPB 1, no. 48 (2020): 33. http://dx.doi.org/10.18265/1517-03062015v1n48p33-45.

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<p>This paper aimed at the design and development of a data acquisition and control system using the Arduino open-source platform to automate equipment responsible for the IEC 60587 electrical tracking and erosion test. The developed system allows the selection of protection resistors specified by the standard from the voltage value informed by the operator, monitoring of the leakage current flowing over five samples simultaneously tested and automatically interrupts the samples if the leakage current exceeds 60 mA for more than two seconds. The leakage current values are measured indire

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Condon, David E., Brenda K. Schroeder, Paul A. Rowley, and F. Marty Ytreberg. "Discovery of novel targets for important human and plant fungal pathogens via an automated computational pipeline HitList." PLOS One 20, no. 6 (2025): e0323991. https://doi.org/10.1371/journal.pone.0323991.

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Fungi are a major threat to human health and agricultural productivity, causing 1.7 million human deaths and billions of dollars in crop losses and spoilage annually. While various antifungal compounds have been developed to combat these fungi in medical and agricultural settings, there are concerns that effectiveness is waning due to the emergence of acquired drug resistance and novel pathogens. Effectiveness is further hampered due to the limited number of modes of action for available antifungal compounds. To develop new strategies for the control and mitigation of fungal disease and spoila

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Florido, Emmanuel A., and Sarah Allyssa Solidum. "Butane/Propane Gas Sensing Using Zinc Oxide Film Grown by Successive Ionic Layer Adhesion and Reaction." Key Engineering Materials 705 (August 2016): 273–77. http://dx.doi.org/10.4028/www.scientific.net/kem.705.273.

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This study was aimed to test the ability of zinc oxide (ZnO) film fabricated by successive ionic layer adsorption and reaction (SILAR) to detect liquid petroleum gas consisting of a mixture of butane/propane gas. The film was fabricated by alternate dipping of pre-cleaned glass substrates in a sodium zincate bath and in a 95°C hot water bath using an automated dipping machine to control the sequence and dipping time. Scanning electron microscopy (SEM) revealed a uniform film consisting of wurtzite ZnO nanorods for the sample grown using 0.1M concentration of sodium zincate and 200 dippings. Cu

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Esteves, David Seixas, Manuel F. C. Pereira, Ana Ribeiro, Nelson Durães, Maria C. Paiva, and Elsa W. Sequeiros. "Development of MWCNT/Magnetite Flexible Triboelectric Sensors by Magnetic Patterning." Polymers 15, no. 13 (2023): 2870. http://dx.doi.org/10.3390/polym15132870.

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The fabrication of low-electrical-percolation-threshold polymer composites aims to reduce the weight fraction of the conductive nanomaterial necessary to achieve a given level of electrical resistivity of the composite. The present work aimed at preparing composites based on multiwalled carbon nanotubes (MWCNTs) and magnetite particles in a polyurethane (PU) matrix to study the effect on the electrical resistance of electrodes produced under magnetic fields. Composites with 1 wt.% of MWCNT, 1 wt.% of magnetite and combinations of both were prepared and analysed. The hybrid composites combined

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Silva, D. F., A. F. C. Andrade, M. C. Caldas-Bussiere та ін. "246 EFFECT OF NITRIC OXIDE INHIBITION (N-ω-NITRO-L-ARGININE METHYL ESTER) AND SCAVENGER (METHYLENE BLUE) ON PLASMA MEMBRANE PEROXIDATION OF EQUINE CRYOPRESERVED SPERM". Reproduction, Fertility and Development 25, № 1 (2013): 271. http://dx.doi.org/10.1071/rdv25n1ab246.

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The peroxidation of plasma membrane lipids has been claimed to be a major factor involved in sublethal cryodamage. Some authors have reported that reactive oxygen species (ROS) accumulation could be an important factor leading to further damage in post-thaw sperm. Oxidative stress occurring in the sperm is a phenomenon associated with increased rate of oxidation of cellular components and excessive production of ROS and nitrogen. The objective of this study was to evaluate the effect of NO inhibition [N-ω-nitro-l-arginine methyl ester (l-NAME)] and scavenger (methylene blue) on the plasma memb

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Miner, Samantha, Sawa Ito, Kazushi Tanimoto, et al. "Myeloid Leukemias Directly Suppress T Cell Proliferation Through STAT3 and Arginase Pathways." Blood 122, no. 21 (2013): 3885. http://dx.doi.org/10.1182/blood.v122.21.3885.3885.

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Abstract The immune-editing effect of myeloid leukemia has recently been reported in several studies. We previously demonstrated that the K562 leukemia-derived cell line suppresses T cell proliferation, which suggests that myeloid leukemia may function in a similar way to myeloid derived suppressor cells (MDSC). While the mechanism of suppression in leukemia is not fully understood, recent murine and human studies suggest that the STAT3 and arginase pathways play a key role in the immunosuppressive function of MDSC. We hypothesized that myeloid leukemia utilizes the MDSC STAT3 and arginase pat

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Mohamed, Ouameur, Renata Vasconcellos, Agazar mohamed, Olivier Thévenot, and Emmanuel Patois. "New impedance bridge at LNE for the two terminal-pair AC resistor calibration up to 20 kHz." Metrologia, July 27, 2022. http://dx.doi.org/10.1088/1681-7575/ac8485.

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Abstract This paper presents the evolution of LNE’s impedance bridge (Wheatstone bridge) used to calibrate AC resistors defined in the two terminal-pair (2TP) configuration. A new automated Wheatstone bridge, based on 4 resistances, was developed to operate in the full complex plane for resistances ranging from 400 Ω to 2 MΩ and for frequencies up to 20 kHz. A commercial dual precision arbitrary waveform generator supplies the bridge and PXI modules achieve the balance. A phase and frequency synchronization solutions between the arbitrary waveform generator source and the PXI modules were used

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Pimsut, Yaowaret, Stephan Bauer, Marco Kraus, et al. "Development and implementation of an automated four-terminal-pair Josephson impedance bridge." Metrologia, February 2, 2024. http://dx.doi.org/10.1088/1681-7575/ad2539.

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Abstract The four-terminal-pair impedance bridge using pulse-driven Josephson voltage standards at PTB has been fully automated. The same bridge configuration was employed to determine R:R and C:C ratios over the frequency range between 53 Hz to 50 kHz. Only minor changes are needed to cover this large frequency range: amplifiers to increase the sensitivities of the current detections for low frequencies and signal generators with higher resolutions at high frequencies to reach 50 kHz. Furthermore, the bridge can be operated for quadrature R:(1/ωC) measurements. The combined standard uncertain

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De, Rosa Pierluigi, Andrea Fredduzzi, and Corrado Cencetti. "Stream Power Determination in GIS: An Index to Evaluate the Most 'Sensitive'Points of a River." May 31, 2019. https://doi.org/10.3390/w11061145.

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This paper focuses on the problem of measuring stream power in a hydrographic network using the original definition provided by Bagnold in 1996. Recent digital elevation models have enabled the calculation of channel gradients and, consequently, stream power with a finer spatial resolution, and this has created promising and novel opportunities to investigate river geomorphological processes and forms. The work carried out in this study includes defining and implementing a methodological approach that could be automated within a geographic information system and that meets two requirements: (1

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Ghmati, Ramadan, and Mehdi Ghatus. "The Study of the Lift Coefficient of NACA-0012 Airfoil Subjected to an Incompressible Media by Using the Cartesian Cut Cell Method." مجلة الجامعة الأسمرية: العلوم التطبيقية 6, no. 3 (2023). http://dx.doi.org/10.59743/aujas.v6i3.944.

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In order to shorten product design time, engineers need to create high quality meshes within a few days or hours. Newer automated techniques have been published to tackle this need, the Cartesian Cut Cell is one of them. This study is focused on the effect of different Cut Cell meshing strategies on the accuracy of aerodynamic performance predictions. The method can be described as a methodology in which Cut Cells are applied to the geometry utilizing a process involving rectangular/hexagonal cells on a regular lattice cutting through the geometry. The Cut Cell meshing is a general purpose des

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McConkey, Ryley, Nikhila Kalia, Eugene Yee, and Fue-Sang Lien. "Turbo-RANS: straightforward and efficient Bayesian optimization of turbulence model coefficients." International Journal of Numerical Methods for Heat & Fluid Flow, June 13, 2024. http://dx.doi.org/10.1108/hff-12-2023-0726.

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Purpose Industrial simulations of turbulent flows often rely on Reynolds-averaged Navier-Stokes (RANS) turbulence models, which contain numerous closure coefficients that need to be calibrated. This paper aims to address this issue by proposing a semi-automated calibration of these coefficients using a new framework (referred to as turbo-RANS) based on Bayesian optimization. Design/methodology/approach The authors introduce the generalized error and default coefficient preference (GEDCP) objective function, which can be used with integral, sparse or dense reference data for the purpose of cali

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Martín-Fernández, Manuel, Enrique Gracia, and Marisol Lila. "A Short Measure of Acceptability of Intimate Partner Violence Against Women: Development and Validation of the A-IPVAW-8 Scale." Assessment, March 18, 2021, 107319112110001. http://dx.doi.org/10.1177/10731911211000110.

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Attitudes of acceptability of intimate partner violence against women (IPVAW) are considered one of the main risk factors of this type of violence. The aim of this study is to develop and validate a short version of the acceptability of IPVAW scale, the A-IPVAW-8, for large scale studies where space and time are limited. A panel of experts were asked to assess item content validity. Two samples were recruited to assemble an 8-item short version of the scale using automated test assembly, and to reassess the psychometric properties of the A-IPVAW-8 in an independent sample. Results showed that

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Wang, Yilin, Enxiu Wu, Jirui Liu, Mengke Jia, Rui Zhang, and Sen Wu. "Electrical characterization of an individual nanowire using flexible nanoprobes fabricated by atomic force microscopy-based manipulation." Nanotechnology and Precision Engineering 6, no. 4 (2023). http://dx.doi.org/10.1063/10.0021195.

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Nanowires have emerged as promising one-dimensional materials with which to construct various nanocircuits and nanosensors. However, measuring the electrical properties of individual nanowires directly remains challenging because of their small size, thereby hindering the comprehensive understanding of nanowire-based device performance. A crucial factor in achieving reliable electrical characterization is establishing well-determined contact conditions between the nanowire sample and the electrodes, which becomes particularly difficult for soft nanowires. Introduced here is a novel technique f

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Guo, Yueming, and Andrew R. Lupini. "Automatic and Quantitative Measurement of Spectrometer Aberrations." Microscopy and Microanalysis, September 6, 2023. http://dx.doi.org/10.1093/micmic/ozad084.

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Abstract The performance of electron energy loss spectrometers can often be limited by their electron optical aberrations. Due to recent developments in high energy resolution and momentum-resolved electron energy loss spectroscopy (EELS), there is renewed interest in optimizing the performance of such spectrometers. For example, the “ω − q” mode of momentum-resolved EELS, which uses a small convergence angle and requires aligning diffraction spots with the slot aperture, presents a challenge in the realignments of the spectrometer required by the adjustment of the projection lenses. Automated

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Choi, Jiyong, Jungwoo Kim, Jeongwon Lee, Ju-Hyun Im, Hyung Hee Cho, and Jung-Il Choi. "Genetic algorithm-based optimal film cooling design for gas turbine endwalls under real operating conditions." Physics of Fluids 37, no. 6 (2025). https://doi.org/10.1063/5.0270875.

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Modern gas turbines are designed for high efficiency and low NOx emissions, posing significant thermal challenges that necessitate effective cooling systems. This study presents a systematic optimization framework for arranging film cooling holes on the endwall of first-stage nozzle guide vanes using numerical approaches. A genetic algorithm (GA) is integrated with Sellers' film superposition method to enhance cooling performance and computational efficiency. The optimization was conducted on an annular cascade model, incorporating the combustor–nozzle gap for realistic conditions. The geometr

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Chen, JinGuo, Hao Zou, Guangzhi Pan, Shuai Mao, Bing Chen, and Chuan Wu. "Self‐Powered Sensor Based on Triboelectric Nanogenerator for Landslide Displacement Measurement." Journal of Sensors 2024, no. 1 (2024). http://dx.doi.org/10.1155/js/6182699.

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Landslides are a severe geological disaster that can cause casualties and property damage. Surface deformation displacement monitoring plays a crucial role in landslide monitoring and early warning systems. However, the shortage of power supply at landslide monitoring sites limits the widespread installation of automated landslide displacement monitoring sensors. In this research, we propose a self‐powered sensor (displacement monitoring sensor‐triboelectric nanogenerator [DIS‐TENG]) for monitoring landslide displacement based on the TENG. The DIS‐TENG utilizes the principle of frictional elec

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Raila, Tomas, Tadas Penkauskas, Filipas Ambrulevičius, Marija Jankunec, Tadas Meškauskas, and Gintaras Valinčius. "AI-based atomic force microscopy image analysis allows to predict electrochemical impedance spectra of defects in tethered bilayer membranes." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-04853-4.

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AbstractAtomic force microscopy (AFM) image analysis of supported bilayers, such as tethered bilayer membranes (tBLMs) can reveal the nature of the membrane damage by pore-forming proteins and predict the electrochemical impedance spectroscopy (EIS) response of such objects. However, automated analysis involving pore detection in such images is often non-trivial and can require AI-based object detection techniques. The specific object-detection algorithm we used to determine the defect coordinates in real AFM images was a convolutional neural network (CNN). Defect coordinates allow to predict

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Yip, Mighten C., Mercedes M. Gonzalez, Christopher R. Valenta, Matthew J. M. Rowan, and Craig R. Forest. "Deep learning-based real-time detection of neurons in brain slices for in vitro physiology." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-85695-4.

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AbstractA common electrophysiology technique used in neuroscience is patch clamp: a method in which a glass pipette electrode facilitates single cell electrical recordings from neurons. Typically, patch clamp is done manually in which an electrophysiologist views a brain slice under a microscope, visually selects a neuron to patch, and moves the pipette into close proximity to the cell to break through and seal its membrane. While recent advances in the field of patch clamping have enabled partial automation, the task of detecting a healthy neuronal soma in acute brain tissue slices is still a

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G. K., Anil Vishnu, Gayatri Gogoi, Midhun C. Kachappilly, Annapoorni Rangarajan, and Hardik J. Pandya. "Label-free multimodal electro-thermo-mechanical (ETM) phenotyping as a novel biomarker to differentiate between normal, benign, and cancerous breast biopsy tissues." Journal of Biological Engineering 17, no. 1 (2023). http://dx.doi.org/10.1186/s13036-023-00388-y.

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Abstract Background Technologies for quick and label-free diagnosis of malignancies from breast tissues have the potential to be a significant adjunct to routine diagnostics. The biophysical phenotypes of breast tissues, such as its electrical, thermal, and mechanical properties (ETM), have the potential to serve as novel markers to differentiate between normal, benign, and malignant tissue. Results We report a system-of-biochips (SoB) integrated into a semi-automated mechatronic system that can characterize breast biopsy tissues using electro-thermo-mechanical sensing. The SoB, fabricated on

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sprotocols. "A rapid one-step kinetics-based immunoassay procedure for the highly-sensitive detection of C-reactive protein." December 31, 2014. https://doi.org/10.5281/zenodo.13656.

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Authors: Sandeep Kumar Vashist, Gregor Czilwik, Thomas van Oordt, Felix von Stetten, Roland Zengerle, E. Marion Schneider & John H.T. Luong ### Abstract A rapid one-step kinetics-based sandwich enzyme-linked immunosorbent (ELISA) procedure has been developed for highly-sensitive detection of C-reactive protein (CRP) in less than 30 min. With minimal process steps, the procedure is highly simplified and cost-effective. The analysis only involves sequentially the formation of a sandwich immune complex on capture anti-CRP antibody (Ab)-bound Dynabeads, followed by two magnet-assisted washings

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