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Loss of Exchange symmetry in Multiqubit states under Ising Chain Evolution

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Chinese Physics Letters 2011年第2期28卷 39-42页

作者： sudha B.G.Divyamani A.r.Usha devi Department of Physics Kuvempu UniversityShankaraghattaShimoga-577451India DAMTP Centre for Mathematical SciencesWilberforce RoadCambridgeCB3OWAUK Department of Physics Bangalore UniversityBangalore-560056India Inspire Institute Inc. McLeanVA 22101USA.

Keeping in view of importance of exchange symmetry aspects in studies on spin squeezing of multiqubit states,we show that the one-dimensional Ising Hamiltonian with nearest neighbor interactions does not retain the exchange symmetry of initially symmetric multiqubit *** we show that among 4-qubit states obeying exchange symmetry,all states except W class(and their linear combination)lose their symmetry under time evolution with Ising *** the loss of symmetry of the initially symmetric states to rotational asymmetry of the one-dimensional Ising Hamiltonian with more than 3 qubits,we indicate that all N-qubit states(N>5)obeying permutation symmetry lose their symmetry after time evolution with Ising Hamiltonian.

关键词： symmetry Ising qubit

Deep Learning Based Audio Assistive system for Visually Impaired People

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Computers, Materials & Continua 2022年第4期71卷 1205-1219页

作者： s.Kiruthika devi C.N.subalalitha Department of Computer science and Engineering SRM Institute of Science and TechnologyKattankulathur603203India

Vision impairment is a latent problem that affects numerous people across the *** advancements,particularly the rise of computer processing abilities like Deep Learning(DL)models and emergence of wearables pave a way for assisting visually-impaired *** models developed earlier specifically for visually-impaired people work effectually on single object detection in unconstrained ***,in real-time scenarios,these systems are inconsistent in providing effective guidance for visually-impaired *** addition to object detection,extra information about the location of objects in the scene is essential for visually-impaired *** this in mind,the current research work presents an Efficient Object Detection Model with Audio Assistive system(EODM-AAs)using DL-based YOLO v3 model for visually-impaired *** aim of the research article is to construct a model that can provide a detailed description of the objects around visually-impaired *** presented model involves a DL-based YOLO v3 model for multi-label object ***,the presented model determines the position of object in the scene and finally generates an audio signal to notify the visually-impaired *** order to validate the detection performance of the presented method,a detailed simulation analysis was conducted on four *** simulation results established that the presented model produces effectual outcome over existing methods.

关键词： Deep learning visually impaired people object detection YOLO v3

Effective kernel FCM： Finding appropriate structure in cancer database

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International Journal of Biomathematics 2016年第2期9卷 17-41页

作者： s. r. Kannan r. devi s. ramathilagam T. P. Hong A. ravikumar Department of Mathematics Pondicherry University (A Central University of India) Pondicherry 605014 India Department of MathematicsPeriyar Government Arts College Tamil Nadu India Department of Computer science and Information Engineering National University of Kaohsiun9 Taiwan Department of MathematicsPondicherry University (A Central University of India) Pondicherry 605014 India

Finding available subclasses in high-dimensional medical databases using clustering techniques is considered as very important one in medical field. Due to similar intensi- ties between the datapoints in high-dimensionality cancer medical database clustering techniques have failed to cluster the available subclasses with less error. Therefore this paper presents suitable fuzzy-based clustering techniques to find available subclasses in high-dimensional prostate and breast cancer databases. In addition this paper presents prototype initialization algorithm to avoid random initialization of initial prototypes. In order to evaluate the performance of proposed clustering techniques experimental study has been performed on benchmark databases. Finally the proposed methods have been successfully implemented to find the subclasses of cancers in prostate and breast cancer databases. The clustering results of proposed methods have been validated by evaluating clustering accuracy.

关键词： Clustering fuzzy c-mean kernel-induced distance entropy term.

synthesis and photoluminescent performance of novel europium(Ⅲ) carboxylates with heterocyclic ancillary ligands

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rare Metals 2022年第4期41卷 1342-1352页

作者： Priyanka Dhankhar rekha devi sushma devi sangeeta Chahar Mandeep Dalal V.B.Taxak s.P.Khatkar Priti Boora Department of Chemistry Maharshi Dayanand UniversityRohtak 124001India

Five novel europium(Ⅲ)complexes with 2-[4-(dibutylamino)-2-hydroxybenzoyl]benzoic acid(DAHB)as primary ligand and bathophenanthroline(batho),2,2’-bipyridyl(bipy),5,6-dimethyl-1,10-phenanthroline(dmph),1,10-phenanthroline(phen)as ancillary ligands were syn-thesized via solution precipitation *** structural formulae of synthesized complexes were speculated to be Eu(DABH)_(3)·2H_(2)O(C1),Eu(DABH)_(3)·batho(C2),Eu(DABH)_(3)·bipy(C3),Eu(DABH)_(3)·dmph(C4)and Eu(DABH)_(3)·phen(C5)by elemental analysis,infrared spectroscopy and proton nuclear magnetic resonance spec-troscopy(^(1)H-NMr).The photoluminescent properties and thermal stability of the complexes were investigated by photoluminescent spectroscopy and thermogravimetric analysis(TG-DTG),*** Commission Inter-nationale de I’Eclairage(CIE)color coordinates,Judd–Ofelt intensity parameter(Ω_(2)),total quantum yield,intrinsic quantum efficiency and energy transfer dynamics of com-plexes were also *** excitation spectra of com-plexes are extended up to visible *** complexes exhibit characteristic photoemission of Eu^(3+)metal ion with high color purity in red region attributed to efficient energy transfer from ligand to metal *** replacement of water molecules from coordination sphere of europium ion by ancillary ligands results in enhancement of luminescent properties of the C2–C5 complexes,indicating that ancillary ligands act as additional light harvesting centers in sensiti-zation *** thermal studies show that these complexes are suitable for meeting the requirement of temperature for fabrication of OLEDs devices.

关键词： Photoluminescence Europium sensitization Aromatic carboxylic acid Energy transfer dynamics

Detection and Classification of Diabetic retinopathy Using DCNN and BsN Models

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Computers, Materials & Continua 2022年第7期72卷 597-609页

作者： s.sudha A.srinivasan T.Gayathri devi Department of ECE SRCSASTRA Deemed UniversityKumbakonamIndia

Diabetes is associated with many complications that could lead to *** retinopathy,a complication of diabetes,is difficult to diagnose and may lead to vision *** identification of micro features in fundus images for the diagnosis of Dr is a complex and challenging task for *** clinical testing involves complex procedures and is timeconsuming,an automated system would help ophthalmologists to detect Dr and administer treatment in a timelymanner so that blindness can be *** research works have focused on image processing algorithms,or neural networks,or signal processing techniques alone to detect diabetic ***,we aimed to develop a novel integrated approach to increase the accuracy of *** approach utilized both convolutional neural networks and signal processing *** this proposed method,the biological electro retinogram(ErG)sensor network(BsN)and deep convolution neural network(DCNN)were developed to detect and classify *** the BsN system,electrodes were used to record ErGsignal,which was preprocessed to be *** was performed in the frequency domain by the application of fast Fourier transform(FFT)and mel frequency cepstral coefficients(MFCCs)were *** neural network(ANN)classifier was used to classify the signals of eyes with Dr and normal ***,fundus images were captured using a fundus camera,and these were used as the input for DCNN-based *** DCNN consisted of many layers to facilitate the extraction of features and classification of fundus images into normal images,non-proliferative Dr(NPDr)or earlystage Dr images,and proliferative Dr(PDr)or advanced-stage Dr ***,it classifiedNPDraccording tomicroaneurysms,hemorrhages,cotton wool spots,and exudates,and the presence of new blood vessels indicated *** accuracy,sensitivity,and specificity of the ANNclassifier were found to be 94%,95%,and 93%,***

关键词： Deep convolution neural network artificial neural network nonproliferative diabetic retinopathy biological ErG sensor network

Pharmacognostical study and phytochemical evaluation of brown seaweed sargassum wightii

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Journal of Coastal Life Medicine 2013年第3期 199-204页

作者： Jeyaraman Amutha Iswarya devi Gopalswamy sathiya Balan Kasiviswanathan Periyanayagam Department of Pharmacy Annamalai UniversityChidambaram 608002TamilnaduIndia Manonmanium sundaranar University Tirunelveli 627012Tamil NaduIndia Department of Pharmacognosy College of PharmacyMadurai Medical CollegeMadurai-20Tamil NaduIndia

Objective: To explore the pharmacognostical and phytochemical properties of sargassum ***:and fluorescence analysis of the plant were carried out according to the standard procedure recommended in the WHO guidelines. The qualitative microscopy, phytochemical screening, physicochemical evaluation results: Macroscopic study showed that plants were dark brown, 20-30 cm in height, leaves were 5-8 cm length, shape: linear to ovate, apex: midrib in conspicuous and having the entire, serrate margin. Microscopic evaluation of the transverse section of the leaf, stem, air bladder, receptacles showed the presence of epidermis layer followed by thick cuticle, conducting strand, mesophyll and possessed antheridia or oogonia at the swollen terminal portions. The different extracts of sargassum wightii showed the presence of steroids, alkaloids, phenolic compounds, saponins and flavonoids with varied ***:Various pharmacognostical parameters evaluated in this study help in the identification and standardization of the of the seaweed sargassum wightii.

关键词： sargassum wightii Microscopy Brown weed Phytochemical screening

Deep insights into the advancements and applications of perovskite based photovoltaic cells

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Journal of Energy Chemistry 2018年第3期27卷 753-763页

作者： Chandni devi rajesh Mehra Electronics and Communication Department NITTTR

The organometal halide perovskite materials have a blend of surprising optoelectronic properties, for example high value of absorption coefficient and abrupt optical retention edge, lifetime, long charge carrier diffusion length and many more. Brought in conjunction with the capacity for manufacturing at low temperature, likewise from the solution, devices based on perovskite, particularly solar cells have been contemplated seriously with striking advancements in performance, in the course of recent years. The amalgamation of minimal effort, high efficiency and extra applications gives incredible potential to commercialization of these cells. The applications and performance of perovskite cells frequently relate with the structures of the device. Numerous creative structures of the devices were produced, targeting for vast scale manufacture, diminishing creation cost, upgrading the PCE and subsequently expanding the prospective for future applications. This paper outlines the various advanced structures of PsC, challenges confronted by these PsCs and their future perspectives. The commercial applications of PsC are additionally talked about in this paper.

关键词： solar cells Flexibility ETM Perovskite HTM structures

High Throughput scheduling Algorithms for Input Queued Packet switches

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Computers, Materials & Continua 2022年第1期70卷 1527-1540页

作者： r.Chithra devi D.Jemi Florinabel Narayanan Prasanth Department of IT Dr.Sivanthi Aditanar College of EngineeringTiruchendur628205India Department of CsE Dr.Sivanthi Aditanar College of EngineeringTiruchendur628205India school of CsE Vellore Institute of TechnologyVellore632014India

The high-performance computing paradigm needs high-speed switching fabrics to meet the heavy traffic generated by their *** switching fabrics are efficiently driven by the deployed scheduling *** this paper,we proposed two scheduling algorithms for input queued switches whose operations are based on ranking *** first,we proposed a simple 2-Bit(s2B)scheme which uses binary ranking procedure and queue size for scheduling the ***,the Virtual Output Queue(VOQ)set with maximum number of empty queues receives higher rank than other VOQ’*** simulation,we showed s2B has better throughput performance than Highest ranking First(HrF)arbitration under uniform,and non-uniform traffic *** further improve the throughput-delay performance,an Enhanced 2-Bit(E2B)approach is *** approach adopts an integer representation for rank,which is the number of empty queues in a VOQ *** simulation result shows E2B outperforms s2B and HrF scheduling algorithms with maximum throughput-delay ***,the algorithms are simulated under hotspot traffic and E2B proves to be more efficient.

关键词： Crossbar switch input queued switch virtual output queue scheduling algorithm high performance computing

NONCONsTANT PrEY HArVEsTING IN rATIO-DEPENDENT PrEDATOr-PrEY sYsTEM INCOrPOrATING A CONsTANT PrEY rEFUGE

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International Journal of Biomathematics 2012年第2期5卷 85-104页

作者： sAPNA devi DsT Centre for Interdisciplinary Mathematical sciences Banaras Hindu University Varanasi-221005 India

This paper deals with the problem of nonconstant harvesting of prey in a ratio-dependent predator-prey system incorporating a constant prey refuge. Here we use the reasonable catch-rate function instead of usual catch-per-unit-effort hypothesis. The existence, as well as the stability of possible equilibria, is carried out. Bionomic equilibrium of the system is determined and optimal harvest policy is studied with the help of Pontryagin＇s maximum principle. The key results developed in this paper are illustrated using numer- ical simulations. Our results indicate that dynamic behavior of the system very much depends on the prey refuge parameter and increasing amount of refuge could increase prey density and may lead to the extinction of predator population density.

关键词： Predator-prey prey refuge taxation ratio-dependent stability bionomic equilibrium harvesting optimal equilibrium.