检索结果-南通市图书馆

The Human Eye Pupil Detection system Using BAT Optimized Deep Learning Architecture

在线全文

学校读者我要写书评

暂无评论

Computer systems science & Engineering 2023年第7期46卷 125-135页

作者： s.Navaneethan P.siva satya sreedhar s.Padmakala C.senthilkumar Department of Electronics and Communication Engineering Saveetha Engineering CollegeChennai602105India Department of Information Technology Seshadri Rao Gudlavalleru Engineering CollegeKrishna521356India Department of Computer science Engineering Saveetha School of EngineeringSIMATSChennai602105India Department of Electronics and Communication Engineering Saveetha School of EngineeringSIMATSChennai602105India

The pupil recognition method is helpful in many real-time systems,including ophthalmology testing devices,wheelchair assistance,and so *** pupil detection system is a very difficult process in a wide range of datasets due to problems caused by varying pupil size,occlusion of eyelids,and *** Convolutional Neural Networks(DCNN)are being used in pupil recognition systems and have shown promising results in terms of *** improve accuracy and cope with larger datasets,this research work proposes BOC(BAT Optimized CNN)-IrisNet,which consists of optimizing input weights and hidden layers of DCNN using the evolutionary BAT algorithm to efficiently find the human eye pupil *** proposed method is based on very deep architecture and many tricks from recently developed popular *** results show that the BOC-IrisNet proposal can efficiently model iris microstructures and provides a stable discriminating iris representation that is lightweight,easy to implement,and of cutting-edge ***,the region-based black box method for determining pupil center coordinates was *** proposed architecture was tested using various IRIs databases,including the CAsIA(Chinese academy of the scientific research institute of automation)Iris V4 dataset,which has 99.5%sensitivity and 99.75%accuracy,and the IIT(Indian Institute of Technology)Delhi dataset,which has 99.35%specificity and MMU(Multimedia University)99.45%accuracy,which is higher than the existing architectures.

关键词： BAT algorithm IRIs datasets DCNN pupil detection black box method

Research and development of gas induced semi-solid process for industrial applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2010年第S3期20卷 1010-1015页

作者： J.WANNAsIN s.JANUDOM T.RATTANOCHAIKUL R.CANYOOK R.BURAPA T.CHUCHEEP s.THANABUMRUNGKUL Department of Mining and Materials Engineering Faculty of EngineeringPrince of Songkla University Department of Industrial Engineering Faculty of EngineeringRajamangala University of Technology Srivijaya

several rheocasting processes are developed or applied worldwide in the metal forming *** of the new rheocasting processes is the gas induced semi-solid(GIss) *** GIss process utilizes the principle of rapid heat extraction and vigorous local extraction using the injection of fine gas bubbles through a graphite *** forming processes such as die casting,squeeze casting,gravity casting,and rheo-extrusion of the semi-solid slurries prepared by the GIss process have also been *** GIss process is capable of processing various alloys including cast aluminum alloys,die casting aluminum alloys,wrought aluminum alloys,and zinc *** GIss process is currently developed to be used commercially in the industry with the focus on forming semi-solid slurries containing low fractions solid(search and development activities of the GIss process were discussed and the status of the industrial developments of this process was reported.

关键词： gas induced semi-solid rheocasting die casting formation mechanism industrial applications

Hybrid reinforced thermoset polymer composite in energy absorption tube application:A review

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2018年第4期14卷 291-305页

作者： A.B.M.supian s.M.sapuan M.Y.M.Zuhri E.s.Zainudin H.H.Ya Department of Mechanical and Manufacturing Engineering Universiti Putra Malaysia Laboratory of Bio Composite Technology Institute of Tropical Forestry and Research Products (INTROP)Universiti Putra Malaysia Department of Mechanical Engineering Universiti Teknologi Petronas

The custom of hybridization fibre composite in energy absorption tube application has gained the attention of structural crashworthiness in composite material industry. Thus, the approach of this review is to understand the effect in hybridization within metal/synthetic fibre composite, synthetic/synthetic fibre composite and nature/synthetic fibre composite as energy absorption tube, which reflects on the energy absorption characteristics and crashworthiness behaviors in previous the study. By way of instance, a wide range of methodology and particular parameter in previous study such as the effect in fibre arrangement, matrix polymer, technique of fabrication, fibre treatment(natural fibre), design in geometry/cross-section and others mechanism of hybrid fibre composite tube are highlighted which to comprehend the capability of the mechanical performance and collapsible behavior as sacrificial structure in high-performance structure applications. Moreover, in the recently studies there have been many of the research regarding structural materials as energy absorption tube has been introduced such as metal/matrix composites, new alloy metals and polymer composites which intended to evaluate the performance of these materials into circumstance in loading and impact characteristic. Therefore, this review article is trying to explore the research articles related to the effect of hybridization fibres and thermoset polymer as reinforcement for energy absorption tube research and expected would provide an information and idea which to expend the knowledge in future study of hybridization effect for energy absorption tube, moreover the development for future potential as new hybrid composite fibre materials from the natural/synthetic fibres reinforced composite material in employing of high-performance energy absorption tube application is still less discover and highlighted.

关键词： Energy absorption tube Hybrid composites Collapse behavior Crashworthiness

structural,Dielectric,and Magnetic studies on Electrospun Magnesium Ferrite-Polyvinylidene Fluoride Core–shell Composite Fibers

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica sinica(English Letters) 2014年第4期27卷 557-562页

作者： V.Revathi s.Dinesh Kumar P.Chithra Lekha V.subramanian T.s.Natarajan C.Muthamizhchelvan New Horizon College of Engineering Bangalore 560103India Microwave Laboratory Department of PhysicsIIT MadrasChennai 600036India sRM University KattankulathurChennai 603203India

The sub-micron（of the order of 150 nm） thick core–shell composite fibers of magnesium ferrite-polyvinylidene fluoride are prepared by *** loading of magnesium ferrite is varied from 1 to 10 wt%.The study results by X-ray diffraction,scanning electron microscope,and infra-red spectroscopy indicate the formation of core–shell structure and an enhancement in the amount of b-phase compared to a-phase in the polyvinylidene *** particle size of the magnesium ferrite in the fiber is evaluated to be 30 *** low frequency dielectric studies indicate that the addition of the magnesium ferrite increases the polarization resulting in the increase in the dielectric constant but decreases the dielectric *** magnetization measurements indicate an increased value of coercivity compared to bulk due to the nano-size of the magnesium *** microwave absorption at the ferromagnetic resonance increases with the increase in the concentration of magnesium *** resonance field is found to vary with the loading of MFO.

关键词： Electrospinning Polymer composites Dielectric properties Magnetic properties X-ray diffraction(XRD) Microwave absorption

Artificial intelligence and liver transplantation:Looking for the best donor-recipient pairing

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 347-353页

作者： Javier Briceno Rafael Calleja César Hervás Unit of Liver Transplantation Department of General SurgeryHospital Universitario Reina SofíaCórdobaSpain Maimónides Institute of Biomedical Research of Córdoba(IMIBIC) CórdobaSpain Department of Computer sciences and Numerical Analysis Universidad de CórdobaCórdobaSpain

Decision-making based on artificial intelligence(AI)methodology is increasingly present in all areas of modern *** recent years,models based on deep-learning have begun to be used in organ *** into account the huge number of factors and variables involved in donor-recipient(DR)matching,AI models may be well suited to improve organ ***-based models should provide two solutions:complement decision-making with current metrics based on logistic regression and improve their *** of classifiers could be used to address this ***,not all of them are really useful for D-R ***,in the decision to assign a given donor to a candidate in waiting list,a multitude of variables are handled,including donor,recipient,logistic and perioperative *** these last two,some of them can be inferred indirectly from the team’s previous *** groups of AI models have been used in the D-R matching:artificial neural networks(ANN)and random forest(RF).The former mimics the functional architecture of neurons,with input layers and output *** algorithms can be uni-or *** general,ANNs can be used with large databases,where their generalizability is ***,they are models that are very sensitive to the quality of the databases and,in essence,they are black-box models in which all variables are ***,these models do not allow to know safely the weight of each *** the other hand,RF builds decision trees and works well with small *** addition,they can select top variables as with logistic ***,they are not useful with large databases,due to the extreme number of decision trees that they would generate,making them *** ANN and RF allow a successful donor allocation in over 80%of D-R pairing,a number much higher than that obtained with the best statistical metrics such as model for end-stage liver disease,balance of risk

关键词： Donor-recipient matching Artificial intelligence Deep learning Artificial neural networks Random forest Liver transplantation outcome

INTERMETALLIC ALLOYs AND COMPOsITEs FOR THE 21sT CENTURY: A BAsIC ENERGY sCIENCEs PROGRAM OF THE U. s. DEPARTMENT OF ENERGY

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1999年第S1期9卷 355-363页

作者： Alan L. Dragoo Division of Materials sciences, Office of Basic Energy sciences, U.s.Department of Energy, Germantown, MD 2087-1290, U.s.A.

Progress has been made in intermetallic alloys over the past decade and a half, but intermetallics remain a relatively unexplored class of materials for energy applications. Hence, they offer considerable opportunities both for scientific research on fundamental structural property processing relationships and for technological development. The Department of Energy supports a program of scientific research on intermetallic alloys such as the nickel and iron aluminides and is establishing new research efforts in silicides and Laves phases through the program of the Division of Materials sciences, of the Office of Basic Energy sciences. Areas of research include theory and materials simulation, microalloying, high resolution sudies of structure and composition, mechanical properties, point defects and dislocation mechanics, phase transformations, and processing. Research is conducted through programs at the Department of Energy National Laboratories and through grants to academic and industrial *** results from Division of Materials sciences programs have provided the basis and transportation. In addition, a cooperative effort between research groups has been established as a project on intermetallic materials under the Center of Excellence in synthesis and Processing of Advanced Materials.

关键词： intermetallics energy applications nickel aluminides iron aluminides silicides Laves phases

Floral extract of Tecoma stans:A potent inhibitor of gentamicin-induced nephrotoxicity in vivo

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2011年第9期4卷 680-685页

作者： Raju s Kavimani s Uma Maheshwara rao V sreeramulu Reddy K Vasanth Kumar G Vijaya College of Pharmacy MunaganoorRanga Reddy DistAndhra PradeshIndia-505511 Mather Theresa Post Graduate Institute of Health sciences.Gorimedu PuducherryIndia Nulla Narsimha Reddy College of Pharmacy KorremulaRanga Reddy DistAndhra Pradesh.India Assistant manager - Clinical R&D Shantha Biotechnics LimitedHyderabadAndhra Pradesh.India -500004 Health Management and Research Institute HyderabadAndhra PradeshIndia

Objective:To highlight the nephroprotective activity of ethyl acetate extract of dried flowers of Tecomu stans for its protective effects on genlamicin-induced nephrotoxicity in albino rats. Methods:For studying acute toxicity study,single oral dose of 5（KM） mg ethyl acetate floral extract/kg hodv weight was administered to albino rats（five females,five males）.Nephrotoxicity was induced in albino rats by intraperitoneal administration of gentamicin 80 mg/kg/day for eight *** of concurrent administration of ethyl acetate floral extract of Tecoma stans at a dose of 100.200 and 300 mg/kg/day given by oral mute was determined using serum creatinine,serum uric acid,blood urea nitrogen and serum urea as indicators of kidney *** study groups contained six rats in each *** nephrotoxicity of gentamicin is known to involve induction of oxidative stress,in vitro antioxidant aclivity and free radical-scavenging activity of this extract was also ***:For acute toxicity testing both female and male rats administered with the extract at a dose of 5 000 mg/*** results showed no toxicity in terms of general behavior change,mortality,or change in gross appearance of internal organs(LDsub>50sub>>5 000 mg/kg). It was observed that the ethyl acetate floral extract of Tecoma stans significantly protected rat kidneys from gentamicin-induced histopathological ***-induced glomerular congestion,peritubular and blood vessel congestion,epithelial desquamation,accumulation ol inflamnialoiy cells and necrosis of the kidney cells were found to be reduced in the groups receiving the ethyl acetate floral extract of Tecoma starts along with gentamicin in a dose dependent *** floral extract also reduced the gentamicin-induced increase in serum creatinine,serum uric acid,blood urea nitrogen and serum urea levels（P>0.01）.Conclusions: The present study indicates a verv important role of reactive oxygen species（BOs） and the relation to re

关键词： Gentamicin Tecoma stans Rats Nephrotoxicity serum urea Creatinine

Modulatory effects of Lactiplantibacillus plantarum on chronic metabolic diseases

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food science and Human Wellness 2023年第4期12卷 959-974页

作者： Lei Tian Ruixiang Zhao Xinyi Xu Zhiwei Zhou Xiaofang Xu Dongmei Luo Zhiqiang Zhou Yu Liu Ariel Kushmaro Robert s.Marks András Dinnyés Qun sun Key Laboratory of Bio-Resource and Eco-Environment of the Ministry of Education College of Life SciencesSichuan UniversityChengdu 610064China Institute for Marine and Antarctic studies University of TasmaniaNewnham 7248Australia College of Biomass science and Engineering Sichuan UniversityChengdu 610064China Department of Urology Institute of Urology(Laboratory of Reconstructive Urology)West China HospitalSichuan UniversityChengdu 610041China Avram and stella Goldstein-Goren Department of Biotechnology EngineeringFaculty of Engineering SciencesBen Gurion University of the NegevBeer-Sheva 84105Israel BioTalentum Ltd. Gödöllő2100Hungary Department of Cell Biology and Molecular Medicine University of SzegedSzeged H-6720Hungary Hungarian University of Agriculture and Life sciences Institute of Physiology and Animal NutritionDepartment of Physiology and Animal HealthGödöllő2100Hungary

The increased global incidence of chronic metabolic diseases,a vital threat to human health and a burden on our healthcare systems,includes a series of clinical metabolic syndromes such as obesity,diabetes,hypertension,and *** of the well-known probiotic microorganisms,Lactiplantibacillus plantarum plays an important role in promoting human health,including inhibiting the occurrence and development of a variety of chronic metabolic *** present study provides an overview of the preventive and therapeutic effects of *** on diabetes,obesity,non-alcoholic fatty liver disease,kidney stone disease,and cardiovascular diseases in animal models and human clinical *** *** demonstrated its ability to reduce inflammatory and oxidative stress levels by regulating the production of cytokines and short-chain fatty acids(sCFAs),the activity of antioxidant enzymes,and the balance of intestinal microbial communities to alleviate the symptoms of chronic metabolic ***,updated applications and technologies of *** in food and biopharmaceutical industries are also *** the characteristics and functions of *** will guide the development of related probiotic products and explore the modulatory benefit of *** supplementations on the prevention and treatment of multiple chronic metabolic diseases.

关键词： Lactiplantibacillus plantarum Diabetes Obesity Non-alcoholic fatty liver disease Kidney stone disease Cardiovascular diseases

Performance analysis of cognitive radio networks using channel-prediction-probabilities and improved frame structure

在线全文

学校读者我要写书评

暂无评论

Digital Communications and Networks 2018年第4期4卷 287-295页

作者： Prabhat Thakur Alok Kumar s.Pandit G.singh s.N.satashia Department of Electronics and Communication.Engineering Jaypee University of Information TechnologyWahnaghnt173215India space Application Centre Indian Space Research OrgonizntionAbrnedobad380015India

This paper focuses on potential issues related to the random selection of a sensing channel that occurs after the prediction phase in a Cognitive Radio Network (CRN).A novel approach (Approach-l)for improved selection is proposed,which relies on the probabilities of channels by which they are predicted ***,closed-form expressions are derived for the throughput of Cognitive Users (CUs)in the conventional and proposed approaches. In addition to this,a fimdamental approach for computing the prediction probabilities is also ***, a new challenging issue named "sense and stuck"was observed in the conventional *** proposed approach is validated by comparing the results achieved with the results of the conventional ***, to achieve the prediction probabilities,the pre-channel-state-information is a prerequisite,but it may be unavailable for particular scenarios;therefore,a modified selection method is introduced to avoid the sense and stuck *** algorithm to evaluate the throughput using the random,improved,and modified selection methods is presented with its space and time ***,for additional improvement in the throughput of the CU,a new frame structure is introduced,in which the spectrum prediction and sensing periods are exploited for simultaneous transmission of data via the underlay spectrtun access technique (Approach-2).The simulated results of Approach-2 are compared with our pre-obtalned results of Approach-I,which confirm significant improvement in the throughput.

关键词： Cognitive radio Interweave Prediction spectrum accessing Throughput Underlay