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neural network Modeling and Prediction of Surface Roughness in Machining Aluminum Alloys

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Journal of Computer and Communications 2016年第5期4卷 1-9页

作者： n. Fang n. Fang P. Srinivasa Pai n. edwards College of Engineering Utah State University Logan USA

Artificial neural network is a powerful technique of computational intelligence and has been applied in a variety of fields such as engineering and computer science. This paper deals with the neural network modeling and prediction of surface roughness in machining aluminum alloys using data collected from both force and vibration sensors. Two neural network models, including a Multi-Layer Perceptron (MLP) model and a Radial Basis Function (RBF) model, were developed in the present study. Each model includes eight inputs and five outputs. The eight inputs include the cutting speed, the ratio of the feed rate to the tool-edge radius, cutting forces in three directions, and cutting vibrations in three directions. The five outputs are five surface roughness parameters. Described in detail is how training and test data were generated from real-world machining experiments that covered a wide range of cutting conditions. The results show that the MLP model provides significantly higher accuracy of prediction for surface roughness than does the RBF model.

关键词： Artificial neural network Modeling Prediction Surface Roughness Machining Aluminum Alloys

Understanding the initial use stage of cement mortar lining in drinking water distribution systems:Silicon and aluminum as stability indicators

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Journal of Environmental Sciences 2024年第1期135卷 495-505页

作者： Qiaozhi Liu Yuan Zhuang Guiwei Li Yao Zhang Marc A.edwards Baoyou Shi Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Civil and Environmental Engineering Virginia TechBlacksburgVA 24061USA

The cement mortar lining(CML)of commonly used ductile iron pipes can severely deteriorate the drinking water quality at the initial stage of use,but the behavioral characteristics of different elements release from the CML in this stage is still *** this study,dynamic immersion experiments with new cement mortar lined ductile iron pipe reactors were conducted under different feed water hardness and alkalinity *** results showed that the release of alkaline substances from the CML at the initial stage of use could strongly influence the pH of water,which consequently greatly impacted the release/precipitation behaviors of calcium,aluminum and *** pH and aluminum concentration of the effluent water could reach 11.5 and 700μg/L within 24 hr of hydraulic retention time,respectively,under conditions of relatively lower hardness and *** to the pH elevation,calcium carbonate precipitation could occur even at much lower feed water *** the aluminum and silicon could keep release from the CML in soluble form at different hardness and alkalinity levels,and their release rate depended on the amount of calcium carbonate ***,aluminum and silicon were more suitable as indicators of the corrosion intensity at the initial stage of CML use rather than the traditional calcium carbonate precipitation *** feed water hardness and alkalinity levels for mitigating the initial intense corrosion of CML were proposed:hardness>40 mg/L(CaCO_(3)),alkalinity>100 mg/L(CaCO_(3)).

关键词： Cement mortar lining Hardness Alkalinity Elemental release Drinking water supply

Learning from neighbors and Differentiating Export Quality

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China & World Economy 2024年第4期32卷 1-32页

作者： Qiming Liu Bin Qiu Huw edwards Bo Gao School of Economics and Management Southeast UniversityChina Business school Loughborough UniversityUK

This paper explores how learning from neighboring firms affects new exporters' product quality. It builds a Bayesian learning model to study how new exporters revise their prior beliefs about foreign customers' preferences for product quality from neighboring pioneering exporters. The model shows that a new exporter improves its product quality when it receives a positive quality-preference signal from its neighbors. The learning process of a firm depends on the number of neighbors, the level and heterogeneity of their export quality, and its own prior knowledge of the market. Highly disaggregated firm–product–country level transaction data provide robust evidence for this. The results also suggest that the impact of neighboring signals on a new exporter's quality can be channeled through the importation of high-quality intermediate inputs and more fixed investment. Learning effects are heterogeneous across firms and learning can influence other aspects of export performance.

关键词： Bayesian learning export quality information spillovers uncertainty

平面波大地电磁物理模拟的接地垂直长线源系统

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国外地质勘探技术 1986年第10期 30-33页

作者： R.n.edwards 王建谋

大地电磁模拟通常是在充填着导电液体模拟槽中进行的,这种导电液代表围岩,在其内部放入代表电导率异常的按一定比例塑成各种形状的石墨模型。在液体表面上产生均匀交变水平磁场的一般方法,是在关键位置上水平平行地放着一些架空载流线... 详细信息

大地电磁模拟通常是在充填着导电液体模拟槽中进行的,这种导电液代表围岩,在其内部放入代表电导率异常的按一定比例塑成各种形状的石墨模型。在液体表面上产生均匀交变水平磁场的一般方法,是在关键位置上水平平行地放着一些架空载流线。这种

关键词：大地电磁感应电流均匀介质真电阻率导电液体源系统感生电流趋肤深度物理模拟长导线视电阻率磁场分量半空间地震波平面波

Chronic effects of stretching on range of motion with consideration of potential moderating variables:A systematic review with meta-analysis

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Journal of Sport and Health Science 2024年第2期13卷 186-194页

作者： Andreas Konrad Shahab Alizadeh Abdolhamid Daneshjoo Saman Hadjizadeh Anvar Andrew Graham Ali Zahiri Reza Goudini Chris edwards Carina Scharf David George Behm Institute of Human Movement Science Sport and HealthGraz UniversityGraz A-8010Austria School of Human Kinetics and Recreation Memorial University of NewfoundlandSt.John’sNL A1C 5S7Canada Department of Sport Injuries and Corrective Exercises Faculty of Sport SciencesShahid Bahonar University of KermanKerman 76169-13439Iran

Background:It is well known that stretch training can induce prolonged increases in joint range of motion(ROM).However,to date more information is needed regarding which training variables might have greater influence on improvements in ***,the purpose of this metaanalysis was to investigate the effects of stretch training on ROM in healthy participants by considering potential moderating variables,such as stretching technique,intensity,duration,frequency,and muscles stretched,as well as sex-specific,age-specific,and/or trained state-specific adaptations to stretch ***:We searched through PubMed,Scopus,Web of Science,and SportDiscus to find eligible studies and,finally,assessed the results from 77 studies and 186 effect sizes by applying a random-effect ***,by applying a mixed-effect model,we performed the respective subgroup *** find potential relationships between stretch duration or age and effect sizes,we performed a ***:We found a significant overall effect,indicating that stretch training can increase ROM with a moderate effect compared to the controls(effect size=-1.002;Z=-12.074;95%confidence interval:-1.165 to-0.840;pnalysis showed a significant difference between the stretching techniques(p=0.01)indicating that proprioceptive neuromuscular facilitation and static stretching produced greater ROM than did ballistic/dynamic ***,there was a significant effect between the sexes(p=0.04),indicating that females showed higher gains in ROM compared to ***,further moderating analysis showed no significant relation or ***:When the goal is to maximize ROM in the long term,proprioceptive neuromuscular facilitation or static stretching,rather than ballistic/dynamic stretching,should be *** to consider in future research as well as sports practice is that neither volume,intensity,nor frequency of stretching were

关键词： Flexibility Long-term stretching Stretch training

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形变奥氏体产生的贝氏体的形貌及机械性能

兵器材料科学与工程 1985年第Z1期 73-83页

作者： R.H.edwards ,n.F.Kennon ,胡锡恩

碳含量为0。85％的奥氏体的形变可以使随后相变形成的贝氏体的抗拉强度显著增加。定量金相测量表明,与非形变奥氏体形成的贝氏体相比,这种强化主要由于增加了铁素体内的位错密度和减小了碳化物的尺寸,从而具有更细密的分布。同时也表明... 详细信息

碳含量为0。85％的奥氏体的形变可以使随后相变形成的贝氏体的抗拉强度显著增加。定量金相测量表明,与非形变奥氏体形成的贝氏体相比,这种强化主要由于增加了铁素体内的位错密度和减小了碳化物的尺寸,从而具有更细密的分布。同时也表明,由于在形变过程产生的不均匀滑移带上,加强了形核和长大,则温度最少可低至200℃,形变奥氏体仍可转变为上贝氏体。然而,这对下贝氏体的形成仅仅起了延缓和减小铁索体片的作用。

关键词：贝氏体铁素体贝茵体金相相组成固溶体 γ固溶体塑性形变力学性质机械性能

多发性硬化症患者EB病毒核抗原-1特异性T细胞的高频率和广泛特异性

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世界核心医学期刊文摘(神经病学分册) 2006年第11期 12-13页

作者： Lünemann J.D edwards n Muraro P.A 高中宝 national Institutes of Health National Institute of Neurological Disorders and Stroke Cellular Immunology Section 10 Center Drive Bethesda MD 20892 United States

Epidemiological studies consistently demonstrate that patients with multiple sclerosis are almost universally infected with Epstein-Barr virus (EBV) and that the risk of developing the disease increases with the level of EBV-specific antibody titers. The EBV-encoded nuclear antigen-1 (EBnA1) maintains the viral episome in replicating infected human B cells, and EBnA1-specific CD4+T cells have been identified as a crucial part of the EBV-specific immune control in healthy individuals. We studied 20 untreated EBV seropositive patients with multiple sclerosis and 20 healthy EBV carriers matched demographically and for the expression of multiple sclerosis-associated HLA-DR alleles for their immunological control of EBV latency at the level of EBnA1-specific T cells. Using 51 overlapping peptides covering the C-terminal of EBnA1 domain of EBnA1 (amino acids 400-641), peptide-specific CD4+memory T cells in patients with multiple sclerosis were found to be strikingly elevated in frequency, showed increased proliferative capacity and an enhanced interferon-γproduction. In contrast to EBnA1, T-cell responses to three other latent and three other lytic immunodominant EBV antigens and human cytomegalovirus (HCMV) epitopes did not differ between patients and controls, indicating a distinct role for EBnA1-specific T-cell responses in multiple sclerosis. CD4+T cells from healthy virus carriers preferentially recognized multiple epitopes within the centre part of the C-terminal, whereas the stimulatory epitopes in multiple sclerosis patients covered the entire sequence of this domain of EBnA1. Quantification of EBV viral loads in peripheral blood mononuclear cells (PBMC) by real-time polymerase chain reaction (PCR) showed higher levels of EBV copy numbers in some patients with multiple sclerosis, although the overall difference in viral loads was not statistically significant compared with healthy virus carriers. We suggest that the accumulation of highly antigen-sensitive EBnA1-s

关键词：多发性硬化症 EB 特异性核抗原患者细胞

利用探针跳跃式扫描离子电导显微镜技术揭示结直肠癌单细胞层面对H_(2)O_(2)良性应激的动态响应

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Science Bulletin 2024年第12期69卷 1909-1919页

作者：王东 Emily Woodcock 杨羲 Hiromi nishikawa Elena V.Sviderskaya Masanobu Oshima Christopher edwards 张彦军 Yuri Korchev WPI nano Life Science Institute(WPI-nano LSI) Kanazawa UniversityKanazawa 920-1192Japan Department of Medicine Imperial College LondonLondon W120NNUnited Kingdom Cell Biology Research Centre Molecular and Clinical Sciences Research InstituteSt George’sUniversity of LondonLondon SW170REUnited Kingdom

Colorectal cancer(CRC),a widespread malignancy,is closely associated with tumor microenvironmental hydrogen peroxide(H_(2)O_(2))*** clinical trials targeting H_(2)O_(2)for cancer treatment have revealed its paradoxical role as a promoter of cancer *** the dynamics of cancer cell H_(2)O_(2)eustress at the single–cell level is *** this study,non–contact hopping probe mode scanning ion conductance microscopy(HPICM)with high-sensitive Pt–functionalized nanoelectrodes was employed to measure dynamic extracellular to intracellular H_(2)O_(2)gradients in individual colorectal cancer Caco–*** explored the relationship between cellular mechanical properties and H_(2)O_(2)*** to 0.1 or 1 mmol/L H_(2)O_(2)eustress increased the extracellular to intracellular H_(2)O_(2)gradient from 0.3 to 1.91 or 3.04,***,cellular F–actin–dependent stiffness increased at 0.1 mmol/L but decreased at 1 mmol/L H_(2)O_(2)*** H_(2)O_(2)–induced stiffness modulated AKT activation positively and glutathione peroxidase 2(GPX2)expression *** findings unveil the failure of some H_(2)O_(2)-targeted therapies due to their ineffectiveness in generating H_(2)O_(2),which instead acts eustress to promote cancer cell *** research also reveals the complex interplay between physical properties and biochemical signaling in cancer cells'antioxidant defense,illuminating the exploitation of H_(2)O_(2)eustress for survival at the single–cell *** GPX and/or catalase(CAT)enhances the cytotoxic activity of H_(2)O_(2)eustress against CRC cells,which holds significant promise for developing innovative therapies targeting cancer and other H_(2)O_(2)-related inflammatory diseases.

关键词： SPM nanoprobe nanobiology SECM ROS Stiffness

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感恩记录

疯狂英语（初中天地） 2024年第1期 21-24页

作者： Richard edwards 不详

在这纷繁复杂的生活中,我们可能会碰上各种烦心事,但别忘了,有时候正是在这些微妙的瞬间里蕴藏着无尽的感激之情。或许,我们可以像文中的小马克一样,拥有一本属于自己的感恩记录。一起踏上感恩之旅吧,用心感知那些被时间淡忘的温暖,享... 详细信息

在这纷繁复杂的生活中,我们可能会碰上各种烦心事,但别忘了,有时候正是在这些微妙的瞬间里蕴藏着无尽的感激之情。或许,我们可以像文中的小马克一样,拥有一本属于自己的感恩记录。一起踏上感恩之旅吧,用心感知那些被时间淡忘的温暖,享受生命的美好,发现感恩的力量。

关键词：感恩享受生命用心记录