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A three-dimensional feature extraction-based method for coal cleat characterization using X-ray μCT and its application to a Bowen Basin coal specimen

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 153-166页

作者： Yulai Zhang Matthew Tsang Mark Knackstedt Michael turner Shane Latham Euan Macaulay Rhys Pitchers ARC Training Centre for M3D Innovation Research School of PhysicsAustralian National UniversityCanberraACT2601Australia Department of Materials Physics Research School of PhysicsAustralian National UniversityCanberraACT2601Australia Anglo American Steelmaking Coal BrisbaneQLD4000Australia SCT Operations Pty Ltd. WollongongNSW2500Australia

Cleats are the dominant micro-fracture network controlling the macro-mechanical behavior of *** understanding of the spatial characteristics of cleat networks is therefore important to the coal mining *** fracture networks(DFNs)are increasingly used in engineering analyses to spatially model fractures at various *** reliability of coal DFNs largely depends on the confidence in the input cleat *** of these parameters can be made from image-based three-dimensional(3D)characterization of coal cleats using X-ray micro-computed tomography(m CT).One key step in this process,after cleat extraction,is the separation of individual cleats,without which the cleats are a connected network and statistics for different cleat sets cannot be *** this paper,a feature extraction-based image processing method is introduced to identify and separate distinct cleat groups from 3D X-ray m CT ***(filters)representing explicit cleat features of coal are built and cleat separation is successfully achieved by convolutional operations on 3D coal *** new method is applied to a coal specimen with 80 mm in diameter and 100 mm in length acquired from an Anglo American Steelmaking Coal mine in the Bowen Basin,Queensland,*** is demonstrated that the new method produces reliable cleat separation capable of defining individual cleats and preserving 3D topology after ***-parallel fractures are also identified and separated,which has his-torically been challenging to delineate and rarely reported.A variety of cleat/fracture statistics is measured which not only can quantitatively characterize the cleat/fracture system but also can be used for DFN ***,variability and heterogeneity with respect to the core axis are *** heterogeneity is observed and suggests that the representative elementary volume(REV)of the cleat groups for engineering purposes may be a complex problem requ

关键词： Cleat separation Cleat statistics Feature extraction Discrete fracture network(DFN)modeling

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机器视觉洞察实际情况

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现代制造 2012年第1期 50-52页

作者： mike turner

在物料搬运应用领域中，条形码的使用是司空见惯的，它在产品的整个制造、分销以及消费者的购买过程中被作为一种产品的识别和跟踪手段。采用这一技术，可以确保每一个条形码能够在上述各阶段正确地阅读，担负其应有的责任性。具有条形... 详细信息

在物料搬运应用领域中，条形码的使用是司空见惯的，它在产品的整个制造、分销以及消费者的购买过程中被作为一种产品的识别和跟踪手段。采用这一技术，可以确保每一个条形码能够在上述各阶段正确地阅读，担负其应有的责任性。具有条形码阅读功能（BCR）的视觉传感器，可通过检验条形码的三个关键因素来提供这种保证。这三个关键因素是：产品是否存在、产品的质量和产品的内容。

关键词：机器视觉视觉传感器条形码物料搬运产品消费者阅读

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Research on Development Process of 7 Speed Wet Dual Clutch Transmission

Research on Development Process of 7 Speed Wet Dual Clutch T...

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FISITA 2012 World Automotive Congress--Volume 5:Advanced Transmission System and Driveline

作者： Yong Chen mike turner Michael Gilcrist Wenjiang Zhao Daguo Luo Fuquan Zhao Zhejiang Geely Automobile Research Institute CO. LTD

Seven speed wet dual clutch automatic transmission is a product characterized by an integration of electrics,mechanics and *** optimized efficiency,good NVH performance and durability low cost are considered during the *** order to save time and optimize design,process development research method based on simulation model is ***,basic test is combined to guarantee validity of simulation ***,design process is optimized.

关键词： Dual clutch transmission(DCT) Dual clutch DCTF NVH analysis Basic test

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Association of Hypertension and Plant-based Dietary Patterns on Cognitive Impairment: A Nationwide Cohort Study in China

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Food Science and Human Wellness 2024年

作者： Fang Liang Jialin Fu Gabrielle turner-McGrievy Yechuang Wang Kai Ding Jing Zeng Justin B Moore Rui Li Chengdu High-tech Zone Center for Diseases Control and Prevention School of Public Health Wuhan University Department of Implementation Science Division of Public Health Sciences Wake Forest School of Medicine Department of Health Promotion Education and Behavior Arnold School of Public Health University of South Carolina Columbia SC USA School of Nursing Wuhan University

This study investigated the association of hypertension with cognitive impairment and determined whether better adherence to plant-based diet (PBD) patterns may modify the association. We analyzed 4485 elderly individuals with normal cognition at baseline from the Chinese Longitudinal Healthy Longevity Survey (2011-2018). Cognitive function was assessed by the Mini-mental State Examination (MMSE)， and cognitive impairment was defined as an MMSE score below 18 points. Diet patterns were assessed using the overall plant-based diet index (PDI)， healthful plant-based diet index (hPDI)， and unhealthful plant-based diet index (uPDI) derived from a simplified food frequency questionnaire (FFQ). Blood pressure was measured through physical examination. Cox proportional hazard regression and restricted cubic spline were performed. Participants with hypertension had an increased risk of cognitive impairment compared with normal group. The associations between hypertension and cognitive impairment were more pronounced among participants with lower PDI than those with higher PDI， among participants with lower hPDI than those with higher hPDI， and among participants with higher uPDI than those with lower uPDI. A healthful PBD pattern may attenuate hypertension-induced cognitive impairment， while an unhealthful PBD pattern may exacerbate hypertension-induced cognitive impairment in elderly. Adherence to healthful PBD pattern could be used to prevent or mitigate adverse neurological effects in the hypertensive population.

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虚拟现实类型的足球游戏开发纪实

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程序员（游戏创造） 2008年第10期 34-36页

作者： Doug Mealy Marty Brickey mike turner Jeff Lyndon 李丹（译） Interzone Entertainment公司中国软件与技术服务股份有限公司

虚拟现实中的运动类游戏所谓虚拟现实，就是由计算机生成的世界。将其用于大型多人在线（MMO）运动类游戏中，可以让玩家以虚拟形象或是某个角色的身份参与到这个虚拟世界中。游戏玩家除了能够玩游戏外，还能体验很多新鲜事物——例如... 详细信息

虚拟现实中的运动类游戏所谓虚拟现实，就是由计算机生成的世界。将其用于大型多人在线（MMO）运动类游戏中，可以让玩家以虚拟形象或是某个角色的身份参与到这个虚拟世界中。游戏玩家除了能够玩游戏外，还能体验很多新鲜事物——例如，玩家可以参加在线社交活动，结交新朋友，购买各种虚拟商品，玩家完全可以生活在一个自己可控的理想化灶界里。虚拟现实是利用多种先进技术创建的，它几乎能够完整地模拟现实世界的各种现象，包括重力感、现实运动、各种物理规律，甚至是现实中的气候现象。

关键词：虚拟现实游戏开发足球类型虚拟世界计算机生成游戏玩家社交活动

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A study of process-induced grain structures during steady state and non-steady state electron-beam welding of a titanium alloy

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Journal of Materials Science & Technology 2022年第18期113卷 117-127页

作者： Yu Lu Richard turner Jeffery Brooks Hector Basoalto School of Metallurgy and Materials University of BirminghamBirminghamB152TTUnited Kingdom Department of Materials Science and Engineering The University of SheffieldMappin StreetSheffieldS13JDUnited Kingdom

A detailed microstructural characterisation of the emerging weld-line grain structure,for bead-upon-plate welds in Ti-6Al-4V(Ti64)of differing plate thickness,was *** microstructure studied was formed during both steady state and non-steady state sections within the weld path,with the non-steady state portion being taken from the end of the plate as the weld bead and heat source overhang the edge of the *** allows for the effects of welding process conditions on the microstructural evolution to be *** weld pool geometry and 3D tomography of the weld-induced defects have been *** characterisation of microstructure and texture for different welding parameters and for steady and non-steady states have been used to identify physical parameters for the microstructure predictions that are difficult to obtain *** different states significantly affect the weld crown shape and formation,weld toe,weld bead depth and ***,the heat affected zone(HAZ)re-mains *** the microstructural evolution,both the steady and non-steady states have similar microstructure and *** defects were observed in the steady state section of welds,but sub-surface spherical pores have been observed in the non-steady state section of a *** element modelling to simulate the thermal-metallurgical-mechanical fields within the steady and non-steady state sections of the welds was considered,and the cooling rates predicted within steady state and non-steady sections were interrogated to improve the theoretical understanding of the microstructure and defect formation differences in these Ti64 EB weld regions.

关键词： Electron-beam fusion welding Processing Microstructure Ti-6Al-4V

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预测翻车华尔街错在哪儿了?

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商业周刊（中文版） 2024年第1期 20-21页

作者： Alexandra Semenova Sagarika Jaisinghani Liz Capo McCormick Selcuk Gokoluk Ye Xie Sujata Rao-Coverley Matt turner 孟洁冰(译) 不详

回顾2022年底,不管是股票部门还是债券部门,无论是大公司还是小机构,整个华尔街的气氛都很低落。当时似乎大家都在未雨绸缪,认为经济衰退即将到来。在摩根士丹利(Morgan Stanley),看跌美股的策略师迈克·威尔逊(mike Wilson)迅速成为市... 详细信息

回顾2022年底,不管是股票部门还是债券部门,无论是大公司还是小机构,整个华尔街的气氛都很低落。当时似乎大家都在未雨绸缪,认为经济衰退即将到来。在摩根士丹利(Morgan Stanley),看跌美股的策略师迈克·威尔逊(mike Wilson)迅速成为市场宠儿,他预测标准普尔500指数即将大跌。

关键词：摩根士丹利经济衰退标准普尔500指数美股华尔街债券股票未雨绸缪

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Gilles Fauconnier教授的遗产:从心理空间到概念整合及其他--Mark turner教授访谈录

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外语研究 2022年第5期39卷 27-33页

作者：杨波 Mark turner 东南大学外国语学院江苏南京211189 美国凯斯西储大学认知科学系俄亥俄州克里夫兰44101

Gilles Fauconnier和Mark turner提出的概念整合理论是认知语言学的重要研究方向和范式之一,甚至可以说是人类高级认知活动和创造力的心理运作基础。作为该理论的共同提出者之一,turner教授应邀接受访谈,主要与各位学人回顾和分享如下... 详细信息

Gilles Fauconnier和Mark turner提出的概念整合理论是认知语言学的重要研究方向和范式之一,甚至可以说是人类高级认知活动和创造力的心理运作基础。作为该理论的共同提出者之一,turner教授应邀接受访谈,主要与各位学人回顾和分享如下几方面内容:(1)从心理空间到概念整合的理论发展历程以及概念整合理论的最新发展和应用;(2)两位学者对于合作研究过程中遇到的写作风格上的差异,以及观点和意见上的分歧等问题的处理;(3)Fauconnier教授留给后学的遗产:学术人脉和氛围、治学精神和态度、个人的有趣灵魂。

关键词： Gilles Fauconnier 心理空间理论概念整合理论

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Microplastics in the atmosphere of Ahvaz City, Iran

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Journal of Environmental Sciences 2023年第4期126卷 95-102页

作者： Sajjad Abbasi Neamatollah Jaafarzadeh Amir Zahedi Maryam Ravanbakhsh Somayeh Abbaszadeh Andrew turner Department of Earth Sciences College of ScienceShiraz UniversityShiraz 71454Iran Department of Radiochemistry and Environmental Chemistry Faculty of ChemistryMaria Curie-Skłodowska UniversityLublin 20-031Poland Environmental Technologies Research Center Ahvaz Jundishapur University of Medical SciencesAhvazIran Department of Environmental Health Engineering Shoushtar Faculty of Medical SciencesShoushtarIran Student Research Committee Ahvaz Jundishapur University of Medical SciencesAhvazIran School of Geography Earth and Environmental SciencesPlymouth UniversityPL48AAUK

Airborne particulate matter(PM) with an aerodynamic size cutoff of 10 μm(PM_(10)) has been collected using a high volume air sampler at two locations(urban and residential) in the city of Ahvaz, Iran, for sixteen 24-hour periods over four months(late summer to early winter).Microplastics(MPs) in the PM were isolated after sample digestion and were subsequently characterised by established techniques. All MPs sampled(n = 322) were of a fibrous nature,with polyethylene terephthalate, nylon and polypropylene being the dominant polymers and consistent with textiles and fabrics as the principal source. Despite a distinct seasonality(temperature and wind) over the study period, the abundance, size and colour of the fibres exhibited no clear temporal trend, and no clear differences were observed between the two sites. Concentrations of MPs ranged from none detected to about 0.017/m^(3)(median = 0.0065/m^(3)) and are at the low end of ranges reported in the recent literature for various urban and remote locations. While some MPs may have a local origin, the weathering of other MPs and their acquisition of extraneous geosolids and salts suggests that long-range transport is also important. Back-trajectory calculations indicate that regional sources are mainly to the north and west of Ahvaz, but a southerly, maritime source is also possible in late autumn. Although concentrations of MPs in the atmosphere are well below those encountered in indoor air, further studies are required to elucidate their potential ecological impacts.

关键词： Microplastics Atmosphere Transport Fibres Polymers Ahvaz

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Self-identification of electronically scanned signatures(ESS)and digitally constructed signatures(DCS)

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Forensic Sciences Research 2022年第2期7卷 261-264页

作者： Zuzanna Kazmierczyk Ian J.turner Centre for Excellence in Learning and Teaching University of DerbyDerbyUK

The use of electronic signatures as a form of identification is increasingly common,yet they have been shown to lack the dynamic features found in online *** this study,handwritten signatures were scanned to produce electronically scanned signatures(ESS)which were then digitally altered to produce digitally constructed signatures(DCS).The ESS and DCS were presented back to participants to identify which were *** 1%of participants correctly identified all signatures,with a mean score of 57.6%*** lack of self-recognition of ESS raises questions on their reliability and usefulness as means of personal identification.

关键词： Forensic sciences signature handwriting questioned document analysis electronic signature digital signature simulation

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