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Global operational land imager Landsat-8 reflectance-based active fire detection algorithm

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International Journal of Digital Earth 2018年第2期11卷 154-178页

作者： s.s.kumar D.P.Roy Plant and Environmental sciences New Mexico State UniversityLas CrucesNMUSA Geospatial sciences Center of Excellence South Dakota State UniversityBrookingsSDUSA

A global operational land imager(GOLI)Landsat-8 daytime active fire detection algorithm is *** utilizes established contextual active fire detection approaches but takes advantage of the significant increase in fire reflectance in Landsat-8 band 7(2.20μm)relative to band 4(0.66μm).The detection thresholds are fixed and based on a statistical examination of 39 million non-burning Landsat-8 ***-temporal tests based on band 7 reflectance and relative changes in normalized difference vegetation index in the previous six months are used to reduce commissions *** probabilities of active fire detection for the GOLI and two recent Landsat-8 active fire detection algorithms are simulated to provide insights into their performance with respect to the fire size and *** algorithms are applied to 11 Landsat-8 images that encompass a range of burning conditions and *** and omission errors are assessed by visual interpretation of detected active fire locations and by examination of the Landsat-8 images and higher spatial resolution Google Earth *** GOLI algorithm has lower omission and comparable commission errors than the recent Landsat-8 active fire detection *** GOLI algorithm has demonstrable potential for global application and is suitable for implementation with other Landsat-like reflective wavelength sensors.

关键词： Earth observation remote sensing visible/infrared remote sensing

Classification of Benign and Malignancy in Lung Cancer Using Capsule Networks with Dynamic Routing Algorithm on Computed Tomography Images

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Journal of Artificial Intelligence and Technology 2024年第1期4卷 40-48页

作者： A.R.Bushara R.s.Vinod kumar s.s.kumar Department of Electronics and Communication Engineering Noorul Islam Center for Higher EducationKumarakoilKanyakumari629180Tamil NaduIndia Department of Electronics and Instrumentation Engineering Noorul Islam Center for Higher EducationKumarakoilKanyakumari 629180Tamil NaduIndia

There is a widespread agreement that lung cancer is one of the deadliest types of cancer,affecting both women and *** a result,detecting lung cancer at an early stage is crucial to create an accurate treatment plan and forecasting the reaction of the patient to the adopted *** this reason,the development of convolutional neural networks(CNNs)for the task of lung cancer classification has recently seen a trend in *** have great potential,but they need a lot of training data and struggle with input *** address these limitations of CNNs,a novel machine-learning architecture of capsule networks has been presented,and it has the potential to completely transform the areas of deep *** networks,which are the focus of this work,are interesting because they can withstand rotation and affine translation with relatively little training *** research optimizes the performance of CapsNets by designing a new architecture that allows them to perform better on the challenge of lung cancer *** findings demonstrate that the proposed capsule network method outperforms CNNs on the lung cancer classification *** with a single convolution layer and 32 features(CN-1-32),CapsNet with a single convolution layer and 64 features(CN-1-64),and CapsNet with a double convolution layer and 64 features(CN-2-64)are the three capsulel networks developed in this research for lung cancer *** nodules,both benign and malignant,are classified using these networks using CT *** LIDC-IDRI database was utilized to assess the performance of those *** on the testing results,CN-2-64 network performed better out of the three networks tested,with a specificity of 98.37%,sensitivity of 97.47%and an accuracy of 97.92%.

关键词： capsule network computed tomography deep learning image classification lung cancer

Hybrid bidirectional quantum communication with different levels of control with simulation

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Communications in Theoretical Physics 2025年第1期77卷 65-91页

作者： Plaban saha Manoj kumar Mandal Binayak s Choudhury soumen samanta Department of Mathematics Indian Institute of Engineering Science and TechnologyShibpur B.GardenHowrah—711103West BengalIndia Department of Applied science and Humanities Haldia Institute of TechnologyHatiberiaHaldiaPurba Medinipur—721657West BengalIndia

In this paper,we develop a quantum communication protocol for the simultaneous preparation of a two-qubit and a three-qubit state at the positions of two different parties situated spatially *** one party,Alice,it is a remote state preparation of a known two-qubit state while for the other party,Bob,it is a joint remote state preparation with the help of a third party,*** protocol is executed in a hybrid form bi-directionally in the presence of two controllers,Charlie and *** is a hierarchy in the process through different levels of control under which the actions by Alice and Bob are *** is a need for a ten-qubit entangled channel connecting the five *** generation of this channel through a circuit is *** protocol is executed on the IBM Quantum *** also study the effect of noise on our ***,amplitude-damping,bit-flip and phase-flip noisy environments are considered and the corresponding variations of fidelity are theoretically and numerically analyzed.

关键词： remote state preparation joint remote state preparation hierarchy entangled state quantum circuit controlled protocol

Iron-promoted zirconia-alumina supported Ni catalyst for highly efficient and cost-effective hydrogen production via dry reforming of methane

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Journal of Environmental sciences 2025年第2期148卷 274-282页

作者： Ahmed s.Al-Fatesh Naitik Patel Vijay kumar srivastava Ahmed I.Osman David W.Rooney Anis H.Fakeeha Ahmed E.Abasaeed Mohammed F.Alotibi Rawesh kumar Chemical Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia Department of Chemistry Indus UniversityAhmedabadGujarat 382115India school of Chemistry and Chemical Engineering Queen’s University BelfastBelfast BT95AGNorthern IrelandUK Institute of Refining and Petrochemicals Technologies King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Kingdom of Saudi Arabia

Developing cost-effective and high-performance catalyst systems for dry reforming of methane(DRM)is crucial for producing hydrogen(H_(2))***,we investigate using iron(Fe)as a promoter and major alumina support in Ni-based catalysts to improve their DRM *** addition of iron as a promotor was found to add reducible iron species along with reducible NiO species,enhance the basicity and induce the deposition of oxidizable *** incorporating 1 wt.%Fe into a 5Ni/10ZrAl catalyst,a higher CO_(2) interaction and formation of reducible"NiO-species having strong interaction with support"was observed,which led to an∼80%H_(2) yield in 420 min of Time on stream(TOs).Further increasing the Fe content to 2 wt.%led to the formation of additional reducible iron oxide species and a noticeable rise in H_(2) yield up to 84%.Despite the severe weight loss on Fe-promoted catalysts,high H_(2) yield was maintained due to the proper balance between the rate of CH_(4) decomposition and the rate of carbon deposit ***,incorporating 3 wt.%Fe into the 5Ni/10ZrAl catalyst resulted in the highest CO_(2) interaction,wide presence of reducible NiO-species,minimumgraphitic deposit and an 87%H_(2) *** findings suggest that ironpromoted zirconia-alumina-supported Ni catalysts can be a cheap and excellent catalytic system for H_(2) production via DRM.

关键词： Dry reforming of methane Coke resistant Hydrogen production Cheap catalyst Fe-promoted catalyst

A fractional-order improved FitzHugh–Nagumo neuron model

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Chinese Physics B 2025年第1期34卷 519-528页

作者： Pushpendra kumar Vedat suat Erturk Faculty of Engineering and Natural sciences Istanbul Okan UniversityIstanbulTurkey Department of Mathematics Mathematics Research CenterNear East University TRNCMersin 10Turkey Department of Mathematics Faculty of Arts and SciencesOndokuz Mayis UniversityAtakum-55200SamsunTurkey

We propose a fractional-order improved Fitz Hugh–Nagumo(FHN)neuron model in terms of a generalized Caputo fractional *** the existence of a unique solution for the proposed model,we derive the numerical solution using a recently proposed L1 predictor–corrector *** given method is based on the L1-type discretization algorithm and the spline interpolation *** perform the error and stability analyses for the given *** perform graphical simulations demonstrating that the proposed FHN neuron model generates rich electrical activities of periodic spiking patterns,chaotic patterns,and quasi-periodic *** motivation behind proposing a fractional-order improved FHN neuron model is that such a system can provide a more nuanced description of the process with better understanding and simulation of the neuronal responses by incorporating memory effects and non-local dynamics,which are inherent to many biological systems.

关键词： FitzHugh-Nagumo neuron model generalized Caputo fractional derivative L1 predictor-corrector method stability error estimation

Electrochemical sensor for dopamine detection based on multiwalled carbon nanotube/molybdenum disulfide quantum dots with machine learning integration and anti-interference capability

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Tungsten 2025年第1期7卷 137-151页

作者： Geethukrishnan Onkar Apte Kiran kumar Tadi Energy Electrodics and Electrocatalysis (EEE) Lab Department of Chemistry School of Advanced Sciences Vellore Institute of Technology school of Computer science and Engineering Vellore Institute of Technology

The precise detection and measurement of dopamine（DA）,a crucial neurotransmitter in the human body,plays a significant role in diagnosing,preventing,and treating neurological diseases associated with its levels.A highly sensitive DA electrochemical sensor was constructed by combining molybdenum disulfide quantum dots（MsQDs） with multiwalled carbon nanotubes（MWCNTs）.The MsQDs were synthesized using the shear exfoliation *** sensors consist of MsQDs with Mo-s edge catalytic centers for the DA redox reaction,and MWCNTs amplify the sensor *** linearity of the sensor for the detection of DA was tested in the presence of ascorbic acid(AA,50 μmol·L-1) and uric acid(UA,200 μmol·L-1),and exhibited linearity from 2 to 966 μmol·L-1of DA with 0.097 μA(mol·L-1)-1sensitivity and a low limit of detection of0.6 μmol·L-1（the ratio between signal and noise,s/N=3）.Moreover,the sensitivity and selectivity of the sensor were also studied using *** is no increase in amperometric current after adding the most potentially interfering *** sensor was successfully applied to recover DA in human blood sera ***,machine learning algorithms were operated to aid in the near-precise detection of DA in the heterogeneous mixture containing AA and *** algorithms facilitate the identification and quantification of DA amidst coexisting interferents,including AA,that are commonly present in biological matrices.

关键词： Biosensor Complex mixture Dopamine Machine learning Mos2 Multiwalled carbon nanotubes

Effects of spatial heterogeneity on pseudo-static stability of coal mine overburden dump slope,using random limit equilibrium and random finite element methods:A comparative study

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 83-99页

作者： Madhumita Mohanty Rajib sarkar sarat kumar Das Department of Civil Engineering Indian Institute of Technology(ISM)DhanbadDhanbad 826004India

sudden and unforeseen seismic failures of coal mine overburden(OB)dump slopes interrupt mining operations,cause loss of lives and delay the production of *** of the spatial heterogeneity of OB dump materials is imperative for an adequate evaluation of the seismic stability of OB dump *** this study,pseudo-static seismic stability analyses are carried out for an OB dump slope by considering the material parameters obtained from an insitu field *** heterogeneity is simulated through use of the random finite element method(RFEM)and the random limit equilibrium method(RLEM)and a comparative study is *** of horizontal and vertical spatial correlation lengths were considered for simulating isotropic and anisotropic random fields within the OB dump *** performances of the slope have been reported through the probability of failure and reliability *** was observed that the RLEM approach overestimates failure probability(P_(f))by considering seismic stability with spatial *** P_(f)was observed to increase with an increase in the coefficient of variation of friction angle of the dump ***,it was inferred that the RLEM approach may not be adequately applicable for assessing the seismic stability of an OB dump slope for a horizontal seismic coefficient that is more than or equal to 0.1.

关键词： coal mine overburden dump slope random limit equilibrium method random finite element method seismic slope stability spatial heterogeneity

Translocator protein and neurodegeneration: insights from Alzheimer’s disease

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Neural Regeneration Research 2025年第4期20卷 1090-1091页

作者： Arpit kumar Pradhan Rainer Rupprecht Gerhard Rammes Klinik für Anaesthesiologie und Intensivmedizin der Technischen Universität München Klinikum rechts der IsarMunichGermany Graduate school of systemic Neurosciences Ludwig-Maximilians-Universität MünchenMartinsriedGermany Department of Psychiatry and Psychotherapy University RegensburgRegensburgGermany

The 18 kDa translocator protein(TsPO)located on the outer mitochondrial membrane regulates several key cellular processes including mitochondrial homeostasis,cholesterol transport,apoptosis,cell proliferation,and maintenance of mitochondrial health(Rupprecht et al.,2022,2023).TsPO is expressed in both peripheral organs and the central nervous system,with a more pronounced expression in tissues that produce *** main reason why TsPO has garnered so much attention is because it plays a key role in neurosteroidogenesis by transferring cholesterol from the outer to the inner mitochondrial membrane,which is the rate-limiting step in neurosteroid synthesis.A cholesterol-recognizing amino acid consensus domain has been identified in the cytosolic C terminus of the TsPO protein by both in vitro and site-directed mutagenesis experiments(Li et al.,2001).However,the role of TsPO in the process of neurosteroid synthesis has been challenged by several studies,particularly TsPO knockout models,which suggest that TsPO removal does not affect the phenotype or the system’s viability(Tu et al.,2014).However,ligands targeting TsPO have been shown to enhance levels of neurosteroids which suggests that neurosteroidogenesis is one of the major functional roles mediated by the TsPO protein.

关键词： cholesterol organs

Geochemistry and petrogenesis of magnesian high-K granitoids from Bundelkhand Craton,Central India:New insights into crustal evolution

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Acta Geochimica 2025年第1期44卷 36-58页

作者： shailendra K.Prajapati Meraj Alam Parashar Mishra Hemant kumar Geological survey of India Northern RegionLucknowUP 226024India Department of Geology Indira Gandhi National Tribal UniversityAmarkantakMP 484887India

Background The Bundelkhand Craton is significant for preserving the multiphase granitoids magmatism from Paleoarchean to Neoarchean *** consists of a variety of granite rocks,including TTGs,sanukitoids,and high-K *** study presents geochemical characteristics of high-silica(68.97 wt.%–73.99 wt.%),low-silica(58.73wt.%–69.94 wt.%),and high K_(2)O(2.77 wt.%–6.16 wt.%)contents of *** The data on Bundelkhand Craton’s granitic magmatism and geodynamics is not sufficiently *** data from this study will be used to further understand the origin,source,and petrogenesis of granitoid rocks and their implications for the evolution of *** Twenty-one samples were collected and analyzed for major,trace,and REE *** elements were measured using X-ray fluorescence spectrometry(XRF),and trace and REE elements were analyzed by *** procedures from the Geological survey of India were *** The geochemical analysis presents high-silica(68.97-73.99 wt.%),low-silica(58.73-69.94 wt.%),and high K_(2)O(2.77-6.16 wt.%)contents in granitoids,classified as *** rocks are calcic to calcalkalic,magnesian,and range from peraluminous to metaluminous *** patterns showed strong LREE enrichment relative to HREEs,with prominent negative Eu anomalies corresponding to earlier plagioclase ***-element patterns revealed negative anomalies in Nb,sr,P,and Ti and positive anomalies in *** The geochemical signatures attributed to the post-collisional magma generation and continental crustal *** studied rocks show A-type and A2-type lineage,suggesting they originated from the melting of continental crust during transitional/post-collisional tectonic *** formation of hybrid granitoids in the Bundelkhand Craton is connected to the fractionation of hybrid magmas in shallow-seated magma chambers during these tectonic processes.

关键词： Geochemistry Petrogenesis A-type granites Crustal evolution Bundelkhand craton