检索结果-南通市图书馆

Real-time ore sorting using color and texture analysis

作者： (美)david k. barton

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2023年第6期33卷 659-674页

作者： david G.Shatwell Victor Murray Augusto barton Hochschild Mining PLC La Colonia 180Lima 15023Peru Department of Electrical Engineering Universidad de Ingenieria y Tecnologia-UTECLima 15063Peru John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridge 02134USA Department of Electrical and Computer Engineering University of New MexicoAlbuquerque 87131USA

Sensor-based ore sorting is a technology used to classify high-grade mineralized rock. from low-grade waste rock. to reduce operation *** ore-sorting algorithms using color images have been proposed in the past,but only some validate their results using mineral grades or optimize the algorithms to classify rock. in *** paper presents an ore-sorting algorithm based on image processing and machine learning that is able to classify rock. from a gold and silver mine based on their *** algorithm is composed of four main stages:(1)image segmentation and partition,(2)color and texture feature extraction,(3)sub-image classification using neural network.,and(4)a voting system to determine the overall class of the *** algorithm was trained using images of rock. that a geologist manually classified according to their mineral content and then was validated using a different set of rock. analyzed in a laboratory to determine their gold and silver *** proposed method achieved a Matthews correlation coefficient of 0.961 points,higher than other classification algorithms based on support vector machines and convolutional neural network.,and a processing time under 44 ms,promising for real-time ore sorting applications.

关键词： Ore sorting Image color analysis Image texture analysis Machine learning

Development and validation of a novel PCR-RFLP based method for the detection of 3 primary mitochondrial mutations in Leber's hereditary optic neuropathy patients

在线全文

学校读者我要写书评

暂无评论

Eye and Vision 2015年第1期2卷 170-176页

作者： Siobhan Eustace Ryan Fergus Ryan david barton Veronica O’Dwyer Derek.Neylan National Optometry Centre Dublin Institute of TechnologyKevin StreetDublin 8Ireland School of Biological Sciences Dublin Institute of TechnologyKevin StreetDublin 8Ireland Centre for Medical Genetics Our Lady’s Hospital for Sick ChildrenCrumlinDublin 12Ireland

Back.round:Leber’s Hereditary Optic Neuropathy(LHON;MIM 535000)is one of the most commonly inherited optic neuropathies and it results in significant visual morbidity among young adults with a peak.age of onset between the ages of 15–*** worldwide incidence of LHON is approximately 1 in 31,000.95%of LHON patients will have one of 3 primary mitochondrial mutations,G3460A(A52T of ND1),G11778A(R340H of ND4)and T14484C(M64V of ND6).There is incomplete penetrance and a mark.d gender bias in the development of visual morbidity with approximately 50%of male carriers and 10%of female carriers developing optic *** recovery can occur but is dependent on the mutation present with the highest level of visual recovery seen in patients who have the T14484C *** 3 primary mutations are typically identified by individual end-point PCR-restriction fragment length polymorphism(RFLP)or individual targeted bi-directional Sanger sequencing *** purpose of this study was to design a simple multiplex PCR-RFLP that could detect these 3 primary LHON mutations in one ***:PCR primers were designed to incorporate a MaeIII restriction site in the presence of 3460A and 14484C mutations with the 11778A mutation naturally incorporating a MaeIII site.A multiplex PCR-RFLP assay was developed to detect the 3 common mutations in a single *** LHON controls based on the mitochondrial genome harbouring the 3 common mutations were synthesized and cloned into plasmids to act as reliable assay *** from previously tested patients and the synthetic LHON controls were subjected to the multiplex PCR-RFLP *** RFLP products were detected by agarose gel ***:The novel PCR-RFLP assay accurately detects the 3 primary mutations both in patient DNA and in synthesized DNA control samples with a simple visual mutation detection *** synthesized DNA was demonstrated to be a robust control for the detection of LHON Mutations

关键词： LHON Mitochondrial mutations Mutation detection Visual morbidity Multiplex PCR

Optimizing CT for the evaluation of vestibular aqueduct enlargement:Inter-rater reproducibility and predictive value of reformatted CT measurements

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

Journal of Otology 2015年第1期10卷 13-17页

作者： Misun Hwang Ryan Marovich Samuel S.Shin david Chi barton F.Branstetter IV Department of Radiology University of Pittsburgh Medical Center Department of Otolaryngology University of Pittsburgh Medical Center Department of Neurosurgery University of Pittsburgh Medical Center Department of Otolaryngology Children's Hospital of Pittsburgh

Enlarged vestibular aqueduct(EVA), the most frequent identifiable cause of congenital hearing loss, is evaluated with high-definition multidetector CT in the axial plane. Our purpose was to determine which reformatted CT measurements are most reproducible. Seven multiplanar reformatted images were created for each of the 64 temporal bones in patients with EVA. Intraclass correlation coefficients(ICC) were used to assess inter-observer variability, and both linear regression and ROC analyses were used to compare the measurements with severity of hearing loss, as assessed by pure tone audiometry. All seven measurements had excellent inter-observer variability, with average-measure ICC ranging from 0.92 to 0.98. There was no statistically significant correlation between the radiologic degree of aqueduct enlargement and severity of hearing loss using any of the seven measurements; ROC analyses revealed areas under the curves ranging from 0.57 to 0.73. Optimal accuracy was obtained with a threshold of 1.75 mm as measured at the aqueductal aperture in the P€oschl plane, with sensitivity of 0.75 and specificity of0.63. Although the radiologic measurement may not serve as a reliable tool for assessing severity of EVA, P€oschl plane reformatting has proven to be better than conventional axial acquisition plane for identifying patients with clinically significant hearing loss.

关键词： Enlarged vestibular aqueduct Hearing loss Computed

Radar Equations for Modern Radar

在线全文

学校读者我要写书评

暂无评论

丛书名： Artech House Radar Library

2013年

作者： barton, david k.ox

ISBN: (纸本)9781608075218;9781608075225

Based on the classic Radar Range-Performance Analysis from 1980, this practical volume extends that work.to ensure applicability of radar equations to the design and analysis of modern radars. This unique book.helps you identify what information on the radar and its environment is needed to predict detection range. Moreover, it provides equations and data to improve the accuracy of range calculations. You find detailed information on propagation effects, methods of range calculation in environments that include clutter, jamming and thermal noise, as well as loss factors that reduce radar performance. This invaluable book.is supported with nearly 200 illustrations and over 430 equations.

关键词： Radar

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

雷达的用户教育

现代雷达 1988年第Z1期 1-7+14页

作者： david k.barton 李熹林

引言要使雷达顺利地进行研制和生产,一个至关重要的要素是受过教育的用户。这里,“用户”是指设备的最终用户,而不是那些进行科研生产管理的官僚机构。作为工程师,我们负有教育的责任,即帮助用户了解雷达能够做什么,不能做什么;指导设... 详细信息

引言要使雷达顺利地进行研制和生产,一个至关重要的要素是受过教育的用户。这里,“用户”是指设备的最终用户,而不是那些进行科研生产管理的官僚机构。作为工程师,我们负有教育的责任,即帮助用户了解雷达能够做什么,不能做什么;指导设备的设计,力求其切合实际和经济实惠;还要规划新技术的开发,使之能为用户提供更为实用的新设备。依照惯例,在这样一个雷达工程师年会的开幕词里,应该热烈祝贺我们已经取得的成功,和在今后几年内预期可以达到的更大的成功。毫无疑问,在这一方面有许许多多话可说,诸位会在这次会议的一系列论文中看到这一点。但是,首先应当认识到,作为一个学术

关键词：雷达传感器波束形成雷达接收机雷达信号处理雷达性能天线单元脉冲压缩滤波器用户教育情报学教育

A Survey of the Experience and Impact of Acute Upper Respiratory Tract Infections on People in Six Countries in the 2011/2012 Common Cold and Flu Season

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Respiratory Diseases 2013年第4期3卷 175-187页

作者： John david Hull Ian Paul barton Jennifer Torgersen Christine Marie McNeil Greater London Innovation Centre Procter & Gamble Egham UK Ipsos Mark.ting Cincinnati USA Mason Business Centre Procter & Gamble Cincinnati USA

Introduction: Acute Upper Respiratory Tract Infections (URTIs) are the most common infectious diseases of humank.nd. While usually mild and self-limiting, they are characterized by a series of simultaneously occurring symptoms/ signs that are sufficiently disruptive to sufferers’ normal activities in which medication is frequently sought. While the literature has many examples of epidemiological studies on these infections, there are few reports on patient experience and impact. This study was designed to investigate these aspects of Common Cold/Flu across six countries. Methods: A minimum of 500 adults aged 18 and older were recruited in each of six countries (Brazil, China, Germany, India, Russia, and the US) using customary survey research sampling techniques. Single 30-minute (online) or 40-minute door-to-door quantitative questionnaires with c. 50 questions were completed with each participant by the global research firm Ipsos. Main Findings: Across countries, incidence and seasonality of infections reported to this study were consistent with published data. There appears to be a need for patient education on the causes and transmission routes of respiratory infections. Getting good quality sleep and being able to continue with daily activities as an infection resolves are significant drivers to therapy. The most common non-prescription therapies reported were multi-ingredient products in line with the simultaneously occurring multi-symptom nature of the condition(s). Conclusions: This study indicated that acute URTIs exert a significant deleterious effect on sufferers. Public health education, possibly best undertak.n by Pharmacists has the potential to impact the extent of virus transmission by ensuring that people k.ow the true cause of the infection, how it is transmitted and how best to combat this. The several simultaneously occurring symptoms encourage sufferers to seek.multi-ingredient remedies to allow them to continue with normal activities as their i

关键词： Common Cold Upper Respiratory Tract Infections Common Cold Survey

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

制定大数据战略的三个关键

商学院 2014年第6期 69-70页

作者： Dominic barton david Court 麦肯锡

很少有经理人对数据模型有兴趣，许多数据分析工具看上去只是为数据专家而设，而不是为一线的员工服务，这是一个致命伤。通过与来自六大数据密集型行业中的数十家企业的合作，我们发现，企业要想充分利用大数据，

关键词：数据分析工具数据模型员工服务经理人致命伤密集型企业

采用全联热-机械有限元模型计算盘式制动器尖叫声的预测工具

在线全文

学校读者我要写书评

暂无评论

传动技术 2013年第3期27卷 39-48页

作者： Muhammad Zahir Hassan Peter C.Brosk. david C.barton the School of Mechanical Engineering University of Leeds

本文提出一个制动器尖叫模拟的新的综合方法,它集中开发采用全考虑制动器结构响应热负荷的影响的正确的热-机械有限元模型。该综合研究包括实现与时间有关的非线性接触和全联瞬态热分析,在进行不稳定研究前,采用复杂固有值技术,提供在... 详细信息

本文提出一个制动器尖叫模拟的新的综合方法,它集中开发采用全考虑制动器结构响应热负荷的影响的正确的热-机械有限元模型。该综合研究包括实现与时间有关的非线性接触和全联瞬态热分析,在进行不稳定研究前,采用复杂固有值技术,提供在制动器内的接触和温度分布。其结果依次通过制动全部系统固有值证实制动尖叫性质的变化。

关键词：制动尖叫有限元模型全联热-机械

The HINT ProjectmExploring the Use of New Technologies in Heritage Interpretation

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science and Engineering 2014年第3期4卷 156-174页

作者： Robina R. barton david Cooper Anne Guyomard Sophie. C. Justice Peter Samsom Elizabeth Pick.t Cathrien. L. Posthumus Nathalie Cayla Geopark.Shetland Shetland Amenity Trust Garthspool Lerwick ZEl ONY UK . Geopark.Chablais Syndicatlntercommunald Amenagement du Chablais Thonon-Les-Bains 74200 France North Pennines AONB Partnership The Old Co-op Building Stanhope DL13 2UY UK Geopark.de Hondsrug Bronnegerstraat 129531 TG Borger The Netherlands ED YTEM (Laboratory of Environment Dynamics and Territories) UMR CNRS-University of Savoy Technolac 73 376 Le Bourgetdu Lac Cedex France

The HINT project is a four-country collective of Global heritage interpretation. HINT is a two-year project part funded Geopark. researching the uses and benefits of new technologies in by the European Leader Programme. The partners are Geopark.Shetland （Scotland）, Chablais Geopark.（France）, North Pennines Area of Outstanding Natural Beauty （England） and Geopark.de Hondsrug （The Netherlands）. Each partner has developed a pilot project to investigate the practicalities of interpreting and communicating heritage, especially geological heritage, using a particular technology. An overview of each of the four pilot projects is given. The overall aim of the pilot projects is to develop best practice in using new technologies for heritage interpretation and to share information and ideas within the project partnership and with geopark. and heritage organizations around the world. This paper, developed by the HINT partners, aims to give an insight into the practical process of developing interpretive tools using new technologies. Some common problems are highlighted and some ways in which these can be addressed are shown.

关键词： Technology interpretation education tourism heritage.