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Novel Soft ComputingModel for Predicting Blast-Induced Ground Vibration in Open-Pit Mines based on the bagging and Sibling of Extra Trees Models

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Computer Modeling in Engineering & Sciences 2023年第3期134卷 2227-2246页

作者： Quang-Hieu Tran Hoang Nguyen xuan-Nam Bui Department of Surface Mining Mining FacultyHanoi University of Mining and GeologyHanoi100000Vietnam Innovations for Sustainable and Responsible Mining(ISRM)Research Group Hanoi University of Mining and GeologyHanoi100000Vietnam

This study considered and predicted blast-induced ground vibration(PPV)in open-pit mines using bagging and sibling techniques under the rigorous combination of machine learning ***,four machine learning algorithms,including support vector regression(SVR),extra trees(ExTree),K-nearest neighbors(KNN),and decision tree regression(DTR),were used as the base models for the purposes of combination and PPV initial *** bagging regressor(ba)was then applied to combine these base models with the efforts of variance reduction,overfitting elimination,and generating more robust predictive models,abbreviated as ba-ExTree,baKNN,ba-SVR,and *** is emphasized that the ExTree model has not been considered for predicting blastinduced ground vibration before,and the bagging of ExTree is an innovation aiming to improve the accuracy of the inherently ExTree model,as *** addition,two empirical models(i.e.,USBM and Ambraseys)were also treated and compared with the bagging models to gain a comprehensive *** this aim,we collected 300 blasting events with different parameters at the Sin Quyen copper mine(Vietnam),and the produced PPV values were also *** were then compiled as the dataset to develop the PPV predictive *** results revealed that the bagging models provided better performance than the empirical models,except for the ba-DTR *** those,the ba-ExTree is the best model with the highest accuracy(i.e.,88.8%).Whereas,the empirical models only provided the accuracy from 73.6%–76%.The details of comparisons and assessments were also presented in this study.

关键词： Mine blasting blast-induced ground vibration environmentally friendly blasting peak particle velocity bagging extra trees

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On the non-local priors for sparsity selection in high-dimensional Gaussian DAG models

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Statistical Theory and Related Fields 2021年第4期5卷 332-345页

作者： xuan Cao Fang Yang Division of Statistics and Data Science Department of Mathematical SciencesUniversity of CincinnatiCincinnatiOHUSA

We consider sparsity selection for the Cholesky factor L of the inverse covariance matrix in high-dimensional Gaussian DAG *** sparsity is induced over the space of L via non-local priors,namely the product moment(pMOM)prior[Johnson,V.,&Rossell,D.(2012).bayesian model selection in high-dimensional *** of the American Statistical Asso-ciation,107(498),***://***/10.1080/01621459.2012.682536]and the hierarchi-cal hyper-pMOM prior[Cao,X.,Khare,K.,&Ghosh,M.(2020).High-dimensional posterior consistency for hierarchical non-local priors in *** Analysis,15(1),***://***/10.1214/19-ba1154].We establish model selection consistency for Cholesky fac-tor under more relaxed conditions compared to those in the literature and implement an efficient MCMC algorithm for parallel selecting the sparsity pattern for each column of *** demonstrate the validity of our theoretical results via numerical simulations,and also use further simulations to demonstrate that our sparsity selection approach is competitive with existing methods.

关键词： bayesian DAG models non-local priors high-dimensional data posterior consistency graph selection

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Research on Using IMRT Plan for Preoperative Rectal Cancer Patients

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第4期9卷 165-177页

作者： Quang Bui Vinh Soai dang Quoc Cuong Bui xuan Toan Hoang Van Truong Vu Radiotherapy Department Hanoi Oncology Hospital Hanoi Vietnam Medicinal Supplies-Medical Physics Division Hanoi Oncology Hospital Hanoi Vietnam

Aims: Research the possibility of using IMRT for rectal cancer patients in preoperative radiotherapy. Methods and Material: The research object is the preoperative radiotherapy plan for rectal cancer patients. The research group made two plans (IMRT, 3DCRT) for each image series of 34 rectal cancer patients who have received preoperative radiotherapy in Hanoi Oncology Hospital;and then compared the dose distribution on PTV, bladder, intestine, femoral bones, the average MU, and QA results of two types of plan. Results: The 95% isodose line and 50% isodose of IMRT plan are closer than those of 3DCRT plan. The average dose of PTV in IMRT plan and 3DCRT plan are 5006 ± 23 cGy and 5036 ± 42 cGy, respectively. The HTCI and HI values of IMRT and 3D plan are 0.97 ± 0.026 and 5.37 ± 1.32;1.00 ± 0.003 and 7.08 ± 0.88. About the dose of organ at risk: The maximum dose, average dose on the right, left femoral head in the IMRT plan are less than those values in the 3DCRT plan (6.2 Gy, 6 Gy, 7.4 Gy, 9 Gy, respectively). The maximum dose and average dose on the bladder of the IMRT plan are smaller than those values of the 3DCRT plan (5.3 Gy, 1.5 times, respectively). The maximum dose and average dose of intestine in the IMRT plan was less than those values in the 3DCRT plan (4.3 Gy, 1.54 times, respectively). The MU number of IMRT plan is 1.5 times bigger than that of 3DCRT plan. Gamma index of IMRT plan is better than that of 3DCRT plan (99% compared with 97%). Conclusions: Using IMRT plan in preoperative radiotherapy for rectal cancer patients can still ensure covered PTV as well as the 3D PLAN. Furthermore, the dose of PTV in the IMRT plan is more uniform than those in the 3D plan, and the dose effect on the OAR surrounding PTV is much lower than when using the 3D plan. When IMRT plan were used to treat the preoperative rectal cancer patients, the LINAC took more time than when using 3DCRT plan.

关键词： Rectal Cancer Preoperative Radiotherapy IMRT HI HTCI Gamma Index

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Bouc-Wen迟滞模型的改进与音圈电机非光滑迟滞特性的描述

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振动与冲击 2010年第9期29卷 82-85,112页

作者：曾思霖党选举张霖桂林电子科技大学电子工程与自动化学院桂林541004 国家软件与集成电路公共服务平台广西分中心桂林541004

Bouc-Wen模型是基于非线性微分方程的一种迟滞模型,由于三角波等非光滑输入拐点处导数不存在,此模型无法适应此类非光滑输入信号。受信号预处理方法启发,基于不完全微分的柔化思想,对Bouc-Wen迟滞模型进行了改进,论述了其对音圈电机非... 详细信息

Bouc-Wen模型是基于非线性微分方程的一种迟滞模型,由于三角波等非光滑输入拐点处导数不存在,此模型无法适应此类非光滑输入信号。受信号预处理方法启发,基于不完全微分的柔化思想,对Bouc-Wen迟滞模型进行了改进,论述了其对音圈电机非光滑迟滞特性描述的合理性,给出了改进模型的离散形式。在三角波输入下,对原模型和改进模型传输特性进行了仿真比较。结果表明,改进Bouc-Wen模型克服了原模型不足,能有效描述迟滞特性,可实现性好,算法简洁,特别符合高速实时要求。

关键词：音圈电机 Bouc-Wen迟滞模型非光滑不完全微分

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Space Charge Suppression of Polyethylene Induced by Blending with Ethylene-butyl Acrylate Copolymer

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CSEE Journal of Power and Energy Systems 2020年第1期6卷 152-159页

作者： Jintao Zhai Weikang Li Junwei Zha Qi Cheng Xingming Bian Zhimin dang School of Chemistry and Biological Engineering University of Science&Technology BeijingChina State Key Laboratory of Advanced Transmission Tech-nology Global Energy Interconnection Research InstituteBeijing 100083China State Key Laboratory of Alternate Electrical Power Sys-tem with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084China

High-voltage direct current(HVDC)power cables have been paid more attention due to the big issue concerning the main insulation *** residues in the industrial production process will cause space charge generation and accumulation in the materials,which has become one bottleneck to limit the development of power cables up to higher voltage *** this paper,the LDPE matrix was modified by three types of ethylene-butyl acrylate(Eba)copolymers(1.0 wt%)with different polarities(ba content)via melt blending to optimize the space charge behavior of the LDPE *** micromorphology and structure of the blends are examined by polarized light microscope and differential scanning *** space charge distribution is tested by the pulsed electro-acoustic *** trap level is studied by the thermally stimulated *** results show that Eba introduces more deep traps and decreases the shallow *** medium-polar Eba(16%ba content)can effectively suppress charge accumula-tion,and have the same suppressed effect on XLPE/Eba *** study will provide important insights into the design and development of advanced HVDC power cable applications.

关键词： Cable Insulation dielectric materials polyethy-lene insulations space charge

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补体系统及其糖基化

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生物化学与生物物理进展 2017年第10期44卷 888-897页

作者：赵菲党刘毅赵璇李可 Leibniz Institute for Natural Product Research and Infection Biology 西安交通大学第二附属医院 Department of Molecular Biotechnology Ghent University 商洛市中心医院检验科

补体系统是固有免疫系统的重要组成部分,同时也是连接固有免疫和适应性免疫系统的重要桥梁.补体系统由30多种蛋白质组成,且其中绝大多数都经过糖基化修饰.近年来对补体系统的研究,不断揭示出补体系统在抗击病原微生物入侵和维持有机体... 详细信息

补体系统是固有免疫系统的重要组成部分,同时也是连接固有免疫和适应性免疫系统的重要桥梁.补体系统由30多种蛋白质组成,且其中绝大多数都经过糖基化修饰.近年来对补体系统的研究,不断揭示出补体系统在抗击病原微生物入侵和维持有机体生理稳态过程中发挥着重要作用.然而补体系统需要严格的调控,不论是激活不足、抑或是过度激活都可能引起疾病的发生.本文概述了近年来对于补体系统的激活、调控和功能研究的最新进展,并首次从糖生物学角度对补体系统蛋白质组分的糖链结构及糖链对相应蛋白质功能的影响进行了综述和小结.

关键词：补体糖基化糖蛋白调控 H因子

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无词典中文特征词自动抽取的桥接模式滤除算法

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计算机应用研究 2007年第7期24卷 168-170页

作者：宣照国党延忠大连理工大学系统工程研究所辽宁大连116023

提出一种不依赖于词典的抽取文本特征词的桥接模式滤除算法(BPFA)。该算法统计文本中的汉字结合模式及其出现频率,通过消除桥接频率得到模式的支持频率,并依此来判断和提取正确词语。实验结果显示,BPFA能够有效提高分词结果的查准率和... 详细信息

提出一种不依赖于词典的抽取文本特征词的桥接模式滤除算法(BPFA)。该算法统计文本中的汉字结合模式及其出现频率,通过消除桥接频率得到模式的支持频率,并依此来判断和提取正确词语。实验结果显示,BPFA能够有效提高分词结果的查准率和查全率。该算法适用于对词语频率敏感的中文信息处理应用,如文本分类、文本自动摘要等。

关键词：自动分词桥接模式滤除算法中文信息处理

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Influence of Foliar Fertilizers on Growth and Development of Petunia hybrida in Winter-Spring 2015-2016 in Thua Thien Hue

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Journal of Agricultural Science and Technology(A) 2017年第B10期7卷 40-47页

作者： The Thi Dieu Nguyen Phuong Thi xuan Tran Hai Thi Hong Truong Khoa dang Tran Hue University 03 Le Loi StreetHue City 530000Vietnam Institute of Biotechnology Hue UniversityTinh Lo 10 StreetHue City 530000Vietnam Agronomy Faculty University of Agriculture and ForestryHue University102 Phung Hung StreetHue City 530000Vietnam

The experiment was conducted in winter-spring 2015-2016 in Thua Thien Hue to identify different foliar fertilizer for Petunia hybrida having good growth and development,beautiful colors and long lifetime under local *** experiment included four treatments with three kinds of forliar fertilizers—Dau Trau MK 30-10-5,gibberellin 25-10-10 and abscisic *** control treatment(T0)used sterilized water without foliar *** results showed that all the foliar fertilizers influenced well on growth and development of Petunia *** Trau MK 30-10-5 helped Petunia hybrida have high quality and high value/cost ratio than the others.

关键词： Foliar fertilizer Petunia hybrida growth Thua Thien Hue

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过表达溶质载体家族1成员5和敲低慢病毒载体构建及稳定转染RAW264.7细胞株

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中国组织工程研究 2025年第7期29卷 1414-1421页

作者：郭大鑫范苏苏朱振东侯建红张旋云南省第三人民医院/大理大学第二附属医院云南省昆明市650011 昆明医科大学药学院暨云南省天然药物药理重点实验室/现代生物医药产业学院云南省昆明市650500

背景:溶质载体家族1成员5(solute carrier family 1 member 5,SLC1A5)在多种疾病中发挥了潜在作用,但确切作用机制尚不清楚。构建稳定的SLC1A5过表达和敲低细胞模型可为深入研究SLC1A5在疾病中的确切作用机制以及发现潜在治疗靶点提供... 详细信息

背景:溶质载体家族1成员5(solute carrier family 1 member 5,SLC1A5)在多种疾病中发挥了潜在作用,但确切作用机制尚不清楚。构建稳定的SLC1A5过表达和敲低细胞模型可为深入研究SLC1A5在疾病中的确切作用机制以及发现潜在治疗靶点提供有力的实验工具。目的:构建小鼠SLC1A5过表达和敲低的慢病毒载体,以建立稳定转染的RAW264.7细胞株,为深入探讨SLC1A5在炎症中的作用提供实验基础。方法:根据SLC1A5基因序列设计合成引物并使用聚合酶链反应扩增该基因片段。将目的基因定向接入经Age I/Nhe I酶切的载体质粒GV492中构建重组慢病毒质粒,对阳性克隆进一步筛选后测序比对结果;pHelper1.0质粒载体、pHelper2.0质粒载体、目的质粒载体与293T细胞共同培养并转染,获得慢病毒原液进行包装和滴度测定;在此基础上,通过体外培养RAW264.7细胞,确定嘌呤霉素工作质量浓度;不同滴度的慢病毒分别与RAW264.7细胞共同培养,根据荧光强度确定转染效率;用嘌呤霉素挑选出稳定转染细胞,实时荧光定量聚合酶链反应和蛋白免疫印迹方法检测稳定转染细胞株的SLC1A5基因和蛋白表达水平。结果与结论:(1)测序序列与目的序列一致提示重组慢病毒载体构建成功;(2)过表达SLC1A5慢病毒的滴度为1×10~9 TU/mL,敲低SLC1A5慢病毒的滴度为3×10~9 TU/mL;(3)确定RAW264.7细胞嘌呤霉素工作质量浓度为3μg/mL;(4)过表达/敲低SLC1A5慢病毒转染RAW264.7细胞的最佳条件皆为HiTransG P转染增强液且感染复数值等于50;(5)过表达SLC1A5稳转细胞株中SLC1A5基因和蛋白的表达量明显上调,而敲低SLC1A5稳转细胞株中SLC1A5基因和蛋白的表达量显著下调。结果表明,成功构建了小鼠SLC1A5过表达和敲低的慢病毒载体并获得稳定转染的RAW264.7细胞株。

关键词：慢病毒载体溶质载体家族1成员5 SLC1A5 过表达敲低 RAW264.7细胞稳转细胞株

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Analyzing Planning Techniques for Whole Brain Radiotherapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第1期9卷 1-13页

作者： Soai dang Quoc Quang Bui Vinh Cuong Bui xuan Toan Hoang Van Truong Vu Medicinal Supplies Medical Physics Division Hanoi Oncology Hospital Hanoi Vietnam Radiotherapy Department Hanoi Oncology Hospital Hanoi Vietnam

Aims: This study compares data between the Field in Field planning and Wedge planning techniques to figure out which technique has better dose coverage and distribution for PTV, and, if using FiF technique for whole brain treatment, how many beams will have better plan. Methods: 56 patients, who need to radiate whole brain with 30 Gy/10 fractions, have been selected for this study. Four plans have been made for each patient (FiF1—one subfield per field plan, FiF2—two subfields per field plan, FiF3—three subfields per field plan, and a Wedge plan). Results: The results of Field in Field plans including Compare dose distribution on the transverse CT slice, plan evaluation using DVH, number MU of plan, Dmax, HI, HTCI, DmaxPTV, DmeanPTV. Volume of PTV with the dose over 105% prescribed dose, dose of organ at risk, and Quality Assurance (QA) plan, are better than those of Wedge plan. Conclusions: Plans using Field in Field technique has better coverage, is more homogeneous in dose distribution than plan using Wedge technique. When using Field in Field technique for whole brain radiotherapy, using three subfields per field has better result than two subfields per field and one subfield per field.

关键词： Field in Field Whole Brain Radiotherapy HI HTCI Gamma Index

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