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1061
Multi-Objective Optimization of Three-Stage Turbomachine Rotor Based on Complex Transfer Matrix Method
Published 2024-11-01“…This study presents the complex transfer matrix method (CTMM) as an advanced mathematical model, providing significant advantages over the finite element method (FEM) by yielding rapid solutions for complex optimization problems. In order to design a more efficient structure of a three-stage turbomachine rotor, we integrated this method with various optimization algorithms, including genetic algorithm (GA), differential evolution (DE), simulated annealing (SA), gravitational search algorithm (GSA), black hole (BH), particle swarm optimization (PSO), Harris hawk optimization (HHO), artificial bee colony (ABC), and non-metaheuristic pattern search (PS). …”
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1062
Multi-objective flexible job-shop scheduling in hospital using discrete particle swarm optimization algorithm with adaptive inertia weight (DPSO-AIW)
Published 2024-01-01“…The diversity of the population is increased during the evolution process by adaptive adjustment of the variation of the weight of inertia, expressed by ω. …”
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1063
Chance-Constrained Optimization of Photovoltaic System Allocation considering Power Loss, Voltage Level, and Line Current
Published 2023-01-01“…Changes are emerging that will significantly alter structure and operation of this century’s distribution networks, and photovoltaic (PV) systems will play greater role in energy sector, with implications for power system reliability. …”
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1064
Research on the Time Series Prediction of Acoustic Emission Parameters Based on the Factor Analysis–Particle Swarm Optimization Back Propagation Model
Published 2025-02-01“…Factor analysis is employed to process the normalized AE data, simplifying the data structure and identifying common variables. Additionally, it is found that the BP neural network optimized by Particle Swarm Optimization (PSO) is more suitable for predicting the future evolution of these AE parameters. …”
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1065
COMPARATIVE ANALYSIS OF THE IMPORT AND EXPORT OF SORGHUM AND BARLEY MADE IN THE LIGHT OF PRE-ACCESSION AND POST-ACCESSION TO THE EUROPEAN UNION
Published 2017-01-01“…Increasing climate change as well as the evolution of agricultural prices have led to important changes in the structure of crops cultivated predominantly in Romanian farms. …”
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1066
Ab initio approach to many-body quantum spin dynamics
Published 2025-04-01“…A comparison with the discrete truncated Wigner approximation (DTWA) highlights that ML-MCTDH is particularly well-suited for handling anisotropic models and provides more reliable results for two-point observables across all tested cases. …”
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1067
Constructing Peace Identity: Hiroshima's Diplomatic Role in Nuclear Disarmament
Published 2024-12-01“…The results showed the potential for cities to establish and use specific diplomatic identities that help in the modification of governance, more so in cases where state-to-state diplomacy is ineffective. …”
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1068
Interrelations and Distinctions Amongst Discourse, Text, and Hypertext: An Analytical Overview
Published 2024-12-01“…This allows users to navigate more freely between different segments of text, presenting new possibilities for communication and the dissemination of knowledge. …”
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1069
Analysis of Atmospheric Environment Characteristics and Radar Characteristics of Three Short-time Heavy Precipitation Cases under Different Influence Systems in Central Yunnan
Published 2024-02-01“…Based on conventional observation data, NCEP 1°×1° reanalysis data, hourly and 5min automatic station precipitation data, and CINRAD/CC Doppler radar data in Kunming, three short-time heavy precipitation cases under different influence systems during the main flood season of 2021 in central Yunnan are studied.The characteristics of precipitation, circulation pattern, atmospheric environment and structure, shape and evolution of radar echoes are compared and analyzed.The results show that the difference of the three short-time heavy precipitation cases is mainly due to the difference weather systems on 500 hPa.There are shear lines at 700 hPa, but the formation seasons are different.There are convergence lines or weak cold fronts on the ground.The environmental conditions of the three cases are consistent with those of other regions of China in terms of unstable stratification, water vapor near the ground and vertical wind shear, however, there are significant differences in the total precipitable water, CAPE, SWEAT index.The shape of convective echo includes dot echo, block echo, strip echo, flocculent echo and so on.Convective storm type can be divided into high-echo-centriod convective storm, low-echo-centriod convective storm and mixed-echo-centriod convective storm.Short-time heavy precipitation has a single stage of some convective storm type, also has several convective storm types appearing at the same time.CAPE and SWEAT index have a certain correlation with convective storm types.Strong echo profile is columnar structure or tower structure.35 dBz strong echo is grounded without overhang characteristics.Short-time heavy precipitation is mostly generated by long- time stagnant or slow-moving convective echo, some short-time heavy precipitation is also generated in the "train effect" of radar echoes.The duration of short-term heavy precipitation formed by monomer with short life cycle is mostly within 1h, but the duration of short-term heavy precipitation formed by monomer combination and repeated generation and extinction or "train effect" is usually 1~3 h.The instantaneous rain intensity produced by high-echo-centriod convective storm can reach more than 10 mm·(5min)-1, while the rainfall intensity produced by low-echo-centriod convective storm and mixed-echo-centriod convective storm can range from 3~10 mm·(5min)-1, and a few can reach more than 10 mm·(5min)-1.…”
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1070
The Influence of Dendrite Growth Direction on the Oxidation Behavior of Single-Crystal Superalloy DD10
Published 2024-11-01“…For investigating the evolution process of surface oxide film on nickel based single crystal superalloys perpendicular and parallel to the direction of primary dendrite growth,the oxidation behavior of nickel based single crystal superalloys DD10 at 1 050 ℃was studied by the method of continuous weight increase.The surface and oxide film morphology,element distribution,etc.of the alloy perpendicular and parallel to the primary dendrite growth direction were analyzed by scanning electron microscopy (SEM),energy dispersive spectroscopy (EDS),X-ray diffraction (XRD) and electron probe microanalysis (EPMA).Results showed that the growth direction of dendrites had no effect on the oxidation kinetics and oxide film structure of DD10 alloy.The oxidation kinetics of the alloy in both vertical and parallel planes exhibited a staged phenomenon: The first stage followed the cubic weight gain law,while the second stage followed the asymptotic horizontal line law.Furthermore,the oxide film structure was divided into three layers,with the outer layer composed of columnar Nix(Co)1-xO,the middle layer composed of complex spinel,and the inner layer composed of continuous Al2O3.However,the growth direction of dendrite had a significant effect on the rate of oxidation weight gain of the alloy.The oxidation rate constant of the vertical plane of the alloy was k1 =5.96×10-3mg2/(cm4·s),and the oxidation rate constant of the parallel plane was k2 =6.24×10-3 mg2/(cm4·s).Meanwhile,the initial growth rate of the oxide film on the parallel surface of the alloy was greater than that on the vertical surface,which mainly resulted from that the presence of more γ - γ'phase interfaces parallel to the growth direction of the dendrites could provide a large number of non-uniform nucleation sites and more short-circuit diffusion paths for the nucleation of oxides,and thereby cause higher oxidation rates in the first stage for parallel growth directions.With the increase of oxidation time,the inner layers of different dendritic directions all formed a continuous dense Al2O3,which effectively hindered the outward diffusion of metal cations,and reduced the difference in oxidation rates.…”
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1071
The Role of Hepatitis C Virus NS5A Region Mutation and SNP IL-28B of Host to Support Successful Pegylated Interferon and Ribavirin Treatment in Patients with HCV-HIV Coinfection: A...
Published 2019-08-01“…Of the 27 HCV-HIV coinfected patients with CC-gene, 21 subjects had non-neutral mutation. The structure which was expected as NS5A binding site structure was different from consensus (wild type) in SVR group, while the structure was similar to consensus in non-SVR group. …”
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1072
The Role of Hepatitis C Virus NS5A Region Mutation and SNP IL-28B of Host to Support Successful Pegylated Interferon and Ribavirin Treatment in Patients with HCV-HIV Coinfection: A...
Published 2019-08-01“…Of the 27 HCV-HIV coinfected patients with CC-gene, 21 subjects had non-neutral mutation. The structure which was expected as NS5A binding site structure was different from consensus (wild type) in SVR group, while the structure was similar to consensus in non-SVR group. …”
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1073
Molecular phylodynamics of the heterosexual HIV epidemic in the United Kingdom.
Published 2009-09-01“…Including the closest sequences from the global HIV database identified 296 individuals that were in UK-based groups of 3 or more individuals. There were a total of 8 UK-based clusters of 10 or more, comprising 143/2774 (5%) individuals, much lower than the figure of 25% obtained earlier for men who have sex with men (MSM). …”
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1074
Investigating the Polystyrene (PS) Biodegradation Potential of <i>Phanerochaete chrysosporium</i> Strain NA3: A Newly Isolated Soil Fungus
Published 2025-05-01“…The biodegradation capacity of the fungal strain was further evaluated using a carbon dioxide (CO<sub>2</sub>) evolution test, which showed that the PS films treated with NA3 produced more CO<sub>2</sub>, indicating the strain’s ability to successfully utilize PS as a carbon source. …”
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1075
New insight into the history of domesticated apple: secondary contribution of the European wild apple to the genome of cultivated varieties.
Published 2012-01-01“…We show that the evolution of domesticated apples occurred over a long time period and involved more than one wild species. …”
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1076
Functional Importance Backbones of the Brain at Rest, Wakefulness, and Sleep
Published 2025-07-01“…<b>Conclusions</b>: By considering the temporal evolution of both vertices and edges, we provide a more comprehensive understanding of intrinsic brain activity and its functional relevance. …”
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1077
THE STRATEGY OF DOMESTIC ENTERPRISES SYSTEM UPGRADING
Published 2015-03-01“…This approach allows us to more adequately describe the operating environment of the company and to analyze the relationship of internal and external factors of modernization. …”
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1078
The effects of wetting-drying and freezing-thawing cycles on mechanical properties of biopolymer-fiber treated soil
Published 2025-04-01“…Particular emphasis is placed on mechanical strength characteristics, stress-strain behavior, failure patterns, and associated microstructural evolution encompassing pore structure modifications. …”
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1079
RESEARCH ON THE DYNAMICS AND TERITORIAL DISPERSION OF THE OCCUPIED POPULATION IN ROMANIA'S TOURISM IN THE PERIOD 2007-2015
Published 2016-01-01“…Tourism absorbed more younger persons than in the national economy. …”
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1080
Russian generals of the VXIIIi century: social dynamics generations
Published 2011-08-01“…In the present article the quantity and social structure of Russian generalship of the XVIIIth century is to be analysed. …”
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