检索结果-南通市图书馆

Experimental Setup for the Investigation of Reproducibility of Novel Tool Changing Systems in Nanofabrication Machines

引用

Nanomanufacturing and Metrology 2021年第3期4卷 181-189页

作者： Florian Weigert Roman Hebenstreit Roland FuBl rene Theska Institute for Design and Precision Engineering Precision Engineering GroupTechnische Universitat IlmenauGustav-Kirchhoff-Platz.298693 IlmenauGermany Institute for Process Measurement and Sensor Technology Technische Universitat IlmenauGustav-Kirchhoff-Str.198693 IlmenauGermany

Nanomeasuring machines developed at the Technische Universitat Ilmenau enable three-dimensional measurements and manufacturing processes with the lowest *** to the requirements for these processes,a highly reproducible and long-term stable tool changing system is *** this purpose,kinematically determined couplings are widely *** state-of-the-art investigations on those are not sufficient for the highest demands on the reproducibility required for this application.A theoretical determination of the reproducibility based on analytical or numerical methods is possible,however not in the desired nanometer *** to this,a measurement setup for the determination of the reproducibility in five degrees of freedom with nanometer uncertainty was ***,potential measuring devices are systematically examined and measurement principles were developed out of this.A three-dimensional vector-based uncertainty analysis is performed to prove the feasibility of the measurement principle and provides a basis for further *** a result,a transla-tory measurement uncertainty of 10 nm and a rotatory uncertainty of 11 nrad can be ***,the measurement setup is designed,focusing on the metrological frame and the lift-off *** developed setup exceeds the uncertainties of the measurement setups presented in the state-of-the-art by an order of magnitude,allowing new in-depth investigations of the reproducibility of kinematic couplings.

关键词： Tool changing Kinematic coupling Measurement setup Uncertainty analysis Precision design

来源：

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

Secured Cyber Security Algorithm for Healthcare System Using Blockchain Technology

引用

Intelligent Automation & Soft Computing 2023年第2期35卷 1889-1906页

作者： D.Doreen Hephzibah Miriam Deepak Dahiya Nitin C.R.rene Robin Computational Intelligence Research Foundation(CIRF) Chennai600023TamilnaduIndia College of Computer and Information Sciences Majmaah UniversityMajmaah11952Saudi Arabia Department of Electrical Engineering and Computer Science College of Engineering and Applied ScienceUniversity of CincinnatiCincinnati45221OHUnited States Department of Computer Science and Engineering Sri Sairam Engineering CollegeChennai600044TamilnaduIndia

Blockchain technology is critical in cyber *** most recent cryptographic strategies may be hacked as efforts are made to build massive elec-tronic *** of the ethical and legal implications of a patient’s medical data,cyber security is a critical and challenging problem in *** image secrecy is highly vulnerable to various types of *** a result,designing a cyber security model for healthcare applications necessitates extra caution in terms of data *** resolve this issue,this paper proposes a Lionized Golden Eagle based Homomorphic Elapid Security(LGE-HES)algorithm for the cybersecurity of blockchain in healthcare *** blockchain algorithm preserves the security of the medical image by performing hash *** execution of this research is carried out by MATLAB *** suggested fra-mework was tested utilizing Computed Tumor(CT)pictures and MRI image data-sets,and the simulation results revealed the proposed model’s profound *** the simulation,94.9%of malicious communications were recognized and identiﬁed effectively,according to the total outcomes *** suggested model’s performance is also compared to that of standard approaches in terms of Root Mean Square Error(RMSE),Peak Signal to Noise Ratio(PSNR),Mean Square Error(MSE),time complexity,and other factors.

关键词： Healthcare system cybersecurity security data sharing blockchain

来源：

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

Genetics Based Compact Fuzzy System for Visual Sensor Network

引用

Computer Systems Science & Engineering 2023年第4期45卷 409-426页

作者： Usama Abdur Rahman C.Jayakumar Deepak Dahiya C.R.rene Robin Department of Computer Science and Engineering Jerusalem College of EngineeringChennaiTamil Nadu600100India Department of Computer Science and Engineering Sri Venkateswara College of EngineeringChennaiTamil Nadu602117India College of Computer and Information Sciences(CCIS) Majmaah UniversityMajmaah11952Kingdom of Saudi Arabia Department of Computer Science and Engineering Sri Sairam Engineering CollegeChennai600044India

As a component of Wireless Sensor Network(WSN),Visual-WSN(VWSN)utilizes cameras to obtain relevant data including visual recordings and static *** from the camera is sent to energy efficient sink to extract key-information out of *** applications range from health care monitoring to military *** a network with VWSN,there are multiple challenges to move high volume data from a source location to a target and the key challenges include energy,memory and I/O *** this case,Mobile Sinks(MS)can be employed for data collection which not only collects information from particular chosen nodes called Cluster Head(CH),it also collects data from nearby nodes as *** innovation of our work is to intelligently decide on a particular node as CH whose selection criteria would directly have an impact on QoS parameters of the ***,making an appropriate choice during CH selection is a daunting task as the dynamic and mobile nature of MSs has to be taken into *** propose Genetic Machine Learning based Fuzzy system for clustering which has the potential to simulate human cognitive behavior to observe,learn and understand things from manual *** architecture is designed based on Mamdani’s fuzzy *** parameters are derived based on the model residual energy,node centrality,distance between the sink and current position,node centrality,node density,node history,and mobility of sink as input variables for decision making in CH *** inputs received have a direct impact on the Fuzzy logic rules mechanism which in turn affects the accuracy of *** proposed work creates a mechanism to learn the fuzzy rules using Genetic Algorithm(GA)and to optimize the fuzzy rules base in order to eliminate irrelevant and repetitive *** algorithmbased machine learning optimizes the interpretability aspect of fuzzy *** results are obtained using *** result shows that the classification acc

关键词： Visual sensor network fuzzy system genetic based machine learning mobile sink efficient energy life of network

来源：

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

Treatment of colonic varices and gastrointestinal bleeding by recanalization and stenting of splenic-vein-thrombosis:A case report and literature review

引用

World Journal of Gastroenterology 2023年第24期29卷 3922-3931页

作者： Lisa-Michaela Füssel rene Müller-Wille Patrick Dinkhauser Walter Schauer Harald Hofer Department of Internal Medicine Ⅰ Gastroenterology and HepatologyKlinikum Wels-GrieskirchenWels 4600Austria Department of Radiology Klinikum Wels-GrieskirchenWels 4600Austria Department of Abdominal Surgery Klinikum Wels-GrieskirchenWels 4600Austria

BACKGROUND Splenic vein thrombosis is a known complication of *** can lead to increased blood flow through mesenteric *** segmental hypertension may result in the development of colonic varices(CV)with a high risk of severe gastrointestinal *** clear guidelines for treatment are lacking,splenectomy or splenic artery embolization are often used to treat *** vein stenting has been shown to be a safe *** SUMMARY A 45-year-old female patient was admitted due to recurrent gastrointestinal *** was anemic with a hemoglobin of 8.0 g/*** a source of bleeding,CV were *** tomography scans revealed thrombotic occlusion of the splenic vein,presumably as a result of a severe acute pancreatitis 8 years *** a selective angiography,a dilated mesenterial collateral leading from the spleen to enlarged vessels in the right colonic flexure and draining into the superior mesenteric vein could be *** hepatic venous pressure gradient was within normal *** an interdisciplinary board,transhepatic recanalization of the splenic vein via balloon dilatation and consecutive stenting,as well as coiling of the aberrant veins was discussed and successfully *** evaluation revealed complete regression of CV and splenomegaly as well as normalization of the red blood cell count during *** Recanalization and stenting of splenic vein thrombosis might be considered in patients with gastrointestinal bleeding due to ***,a multidisciplinary approach with a thorough workup and discussion of individualized therapeutic strategies is crucial in these difficult to treat patients.

关键词： Pancreatitis-induced splenic vein thrombosis Gastrointestinal hemorrhage Colonic varices Splenic vein stenting Segmental/sinistral hypertension Case report

来源：

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

Rapid preparation of carbon-supported ruthenium nanoparticles by magnetic induction heating for efficient hydrogen evolution reaction in both acidic and alkalinemedia

引用

SusMat 2022年第3期2卷 335-346页

作者： Qiming Liu Bingzhang Lu Forrest Nichols Jeffrey Ko rene Mercado Frank Bridges Shaowei Chen Department of Chemistry and Biochemistry University of CaliforniaSanta CruzCaliforniaUSA Department of Physics University of CaliforniaSanta CruzCaliforniaUSA

Ruthenium has been hailed as a competitive alternative for platinum toward hydrogen evolution reaction(HER),a critical process in electrochemical water *** this study,we successfully prepare metallic Ru nanoparticles supported on carbon paper by utilizing a novel magnetic induction heating(MIH)*** samples are obtained within seconds,featuring a Cl-enriched surface that is unattainable via conventional thermal *** best sample within the series shows a remarkable HER activity in both acidic and alkaline media with an overpotential of only-23 and-12 mV to reach the current density of 10 mA/cm^(2),highly comparable to that of the Pt/C *** studies based on density functional theory show that the excellent electrocatalytic activity is accounted by the surface metal-Cl species that facilitate charge transfer and downshift the d-band *** from this study highlight the unique advantages of MIH in rapid sample preparation,where residual anion ligands play a critical role in manipulating the electronic properties of the metal surfaces and the eventual electrocatalytic activity.

关键词： Cl-enriched surface density functional theory hydrogen evolution reaction magnetic induction heating ruthenium

来源：

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

Direct quantification of topological protection in symmetry-protected photonic edge states at telecom wavelengths

引用

Light(Science & Applications) 2021年第1期10卷 5-11页

作者： Sonakshi Arora Thomas Bauer rene Barczyk Ewold Verhagen L.Kuipers Kavli Institute of Nanoscience Delft University of Technology2600 GA DelftThe Netherlands Center for Nanophotonics AMOLFScience Park 1041098 XG AmsterdamThe Netherlands

Topological on-chip photonics based on tailored photonic crystals(PhCs)that emulate quantum valley-Hall effeas has recently gained widespread interest owing to its promise of robust unidirectional transport of classical and quantum *** present a direct quantitative evaluation of topological photonic edge eigenstates and their transport properties in the telecom wavelength range using phase-resolved near-field optical *** visualizing the detailed sub-wavelength structure of these modes propagating along the interface between two topologically non-trivial mirror-symmetric lattices allows us to map their dispersion relation and differentiate between the contributions of several higher-order Bloch *** probing of forward-and backward-propagating modes as defined by their phase velocities enables direct quantification of topological *** near-field propagation in controlled defects allows us to extract upper limits of topological protection in on-chip photonic systems in comparison with conventional PhC *** find that protected edge states are two orders of magnitude more robust than modes of conventional PhC *** direct experimental quantification of topological robustness comprises a crucial step toward the application of topologically protected guiding in integrated photonics,allowing for unprecedented error-free photonic quantum networks。

关键词： protected quantum symmetry

来源：

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

Modelling potential distribution of a pine bark beetle in Mexican temperate forests using forecast data and spatial analysis tools

引用

Journal of Forestry Research 2020年第2期31卷 649-659页

作者： Antonio Gonzalez-Hernandez rene Morales-Villafana Martin Enrique Romero-Sanchez Brenda Islas-Trejo Ramiro Perez-Miranda Conservation and Enhancement of Forest Ecosystems National Institute of ForestryAgriculture and Livestock ResearchProgreso 504010 Coyoacan Mexico CityMexico Geography Department The National Autonomous University of MexicoUniversidad 300004010 Coyoacan Mexico CityMexico

Accurate and reliable predictions of pest species distributions in forest ecosystems are urgently needed by forest managers to develop management plans and monitor new areas of potential ***-only species distribution models are commonly used in these *** maximum entropy algorithm(MaxEnt)has gained popularity for modelling species ***,MaxEnt was used to model the spatial distribution of the Mexican pine bark beetle(Dendroctonus mexicanus)in a daily fashion by using forecast data from the Weather Research and Forecasting *** study aimed to exploit freely available geographic and environmental data and software and thus provide a pathway to overcome the lack of costly data and technical guidance that are a challenge to implementing national monitoring and management strategies in developing *** results showed overall agreement values between 60 and 87%.The results of this research can be used for *** monitoring and management and may aid as a model to monitor similar species.

关键词： Spatial analysis Dendroctonus mexicanus Geodatabases MaxEnt Forest modelling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

丹酰-L-苯丙氨酸和L-苯丙氨酸对小牛肠碱性磷酸酶抑制作用动力学的比较性研究

引用

光谱学与光谱分析 2009年第10期29卷 2820-2823页

作者：李丽娜吴玉清 rene Buchet 吉林大学超分子结构与材料国家重点实验室吉林长春130012 Universite de Lyon VilleurbanneF-69622FranceCNRS UMR 5246 ICBMSViileurbanneF-69622France

利用紫外分光光度法揭示了丹酰-L-苯丙氨酸对小牛肠碱性磷酸酶的选择性抑制作用,并比较性地研究了丹酰-L-苯丙氨酸和L-苯丙氨酸对小牛肠碱性磷酸酶的动力学抑制过程。结果表明在37℃和碱性磷酸酶工作的最佳pH值(pH10.4)的条件下,丹酰-L... 详细信息

利用紫外分光光度法揭示了丹酰-L-苯丙氨酸对小牛肠碱性磷酸酶的选择性抑制作用,并比较性地研究了丹酰-L-苯丙氨酸和L-苯丙氨酸对小牛肠碱性磷酸酶的动力学抑制过程。结果表明在37℃和碱性磷酸酶工作的最佳pH值(pH10.4)的条件下,丹酰-L-苯丙氨酸与L-苯丙氨酸类似,能够有效抑制小牛肠碱性磷酸酶的活性;利用双倒数曲线拟合,判定丹酰-L-苯丙氨酸与L-苯丙氨酸的抑制类型均为反竞争性抑制,两者的抑制常数Ki均为mmol级。对丹酰-L-苯丙氨酸抑制小牛肠碱性磷酸酶的作用研究,不仅有助于进一步阐明L-苯丙氨酸对组织特异性碱性磷酸酶的选择性抑制机理,而且丹酰基团的存在也为荧光标定碱性磷酸酶的特效抑制剂提供了可能。

关键词：碱性磷酸酶丹酰 L-苯丙氨酸抑制反竞争性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Noise Reduction in Industry Based on Virtual Instrumentation

引用

Computers, Materials & Continua 2021年第10期69卷 1073-1096页

作者： Radek Martinek rene Jaros Jan Baros Lukas Danys Aleksandra Kawala-Sterniuk Jan Nedoma Zdenek Machacek Jiri Koziorek Faculty of Electrical Engineering and Computer Science Department of Cybernetics and Biomedical EngineeringVSB–Technical University of Ostrava70800Ostrava-PorubaCzechia Faculty of Electrical Engineering Automatic Control and InformaticsOpole University of TechnologyOpolePoland Faculty of Electrical Engineering and Computer Science Department of TelecommunicationsVSB–Technical University of Ostrava70800Ostrava-PorubaCzechia

This paper discusses the reduction of background noise in an industrial environment to extend *** the Industry 4.0 era,the mass development of voice control(speech recognition)in various industrial applications is possible,especially as related to augmented reality(such as hands-free control via voice commands).As Industry 4.0 relies heavily on radiofrequency technologies,some brief insight into this problem is provided,including the Internet of things(IoT)and 5G *** study was carried out in cooperation with the industrial partner Brose CZ spol.s.r.o.,where sound recordings were made to produce a *** experimental environment comprised three workplaces with background noise above 100 dB,consisting of a laser/magnetic welder and a press.A virtual device was developed from a given dataset in order to test selected commands from a commercial speech recognizer from *** tested a hybrid algorithm for noise reduction and its impact on voice command recognition *** virtual devices,the study was carried out on large speakers with 20 participants(10 men and 10 women).The experiments included a large number of repetitions(100 times for each command under different noise conditions).Statistical results confirmed the efficiency of the tested *** welding environment efficiency was 27%before applied filtering,76%using the least mean square(LMS)algorithm,and 79%using LMS+independent component analysis(ICA).Magnetic welding environment efficiency was 24%before applied filtering,70%with LMS,and 75%with LMS+*** workplace environment efficiency showed no success before applied filtering,was 52%with LMS,and was 54%with LMS+ICA.

关键词： 5G hybrid algorithms signal processing speech recognition

来源：

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

Dynamical Analysis of A Class of Rotation-theta-equation

Dynamical Analysis of A Class of Rotation-theta-equation

引用

作者： N'gbo Paul-rene Marie N'GBO 浙江师范大学

学位级别：硕士

In this dissertation,we analyze the rotation-θ equation,which is the theta equation augmented with the Coriolis effect,induced by the earth *** Rotation-θ equation is a generalization of a family of models(including the Rotation-CamassaHolm equation and the Rotation-Degasperis-Procesi).Our study is conducted via the bifurcation method and qualitative theory of dynamical *** existence of not only smooth solitary wave solution,periodic wave solution,but also peakon and periodic peakon solutions are given.

关键词： Rotation-θ-equation solitary wave solution periodic wave solution peakon solution periodic peakon solution

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：