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参数优化的SVR移动网络流量预测

计算机应用与软件 2022年第9期39卷 278-284页

作者：郑晓亮陈华亮来文豪安徽理工大学电气与信息工程学院安徽淮南232001 安徽理工大学采动响应与灾害防控国家重点实验室安徽淮南232001

准确预测移动网络流量,不仅可以保障互联网络安全稳定运行,还可以给运营商的资源调度做参照,使运营商能合理分配网络资源。采用参数优化的支持向量回归(SVR)进行网络流量预测研究。原始数据为淮南移动2019年1月1日至5月15日吾悦广场的... 详细信息

准确预测移动网络流量,不仅可以保障互联网络安全稳定运行,还可以给运营商的资源调度做参照,使运营商能合理分配网络资源。采用参数优化的支持向量回归(SVR)进行网络流量预测研究。原始数据为淮南移动2019年1月1日至5月15日吾悦广场的流量数据,数据采集粒度为15分钟;为了寻找一种SVR的最佳优化方案,将粒子群优化(Particle Swarm Optimization,PSO)、差分灰狼优化(Differential Evolution-Grey Wolf Optimizer,DE-GWO)、布谷鸟搜索(Cuckoo Search,cs)算法用于SVR的参数寻优;同时将基本的手动调参的SVR用于流量预测对比。实验结果表明,DE-GWO参数优化的SVR具有较好的预测性能。

关键词：网络流量预测优化SVR PSO DE-GWO cs 参数优化

Tuning the A-site cation and X-site anion composition of CH3NH3PbI3 perovskite material for efficient planar perovskite solar cells

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Tuning the A-site cation and X-site anion composition of CH3...

基于EOPN和UML的柔性制造控制系统建模方法

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Yangyang Cai lai Xie Sujuan Wu Institute for Advanced Materials South China Academy of Advanced OptoelectronicsSouth China Normal University

In order to optimize microstructure and improve the photoelectric properties of planar perovskite solar cells(PScs), the cs and SCN are selected to tune the A-site cation and X-site anion composition of CHNHPbI material with ABX structure, respectively. The effects of cs and SCN addition on the microstructure and photoelectric properties of(CHNH)csPb(ISCN) perovskite films and the performance of PScs have been systematically investigated. The value of "x" corresponding to the amount of SCN-has been optimized. At the optimum amount of 0.05, the(CHNH)csPb(ISCN)(csSCN) PSC achieve the champion power conversion efficiency(PCE) of 18.78% and average PCE of 17.66%, being much higher than that of the reference PScs. The results indicate that the obtained csSCN perovskite film shows the improved microstructure, better local electric properties, the reduced trap density and suppressed charge recombination, resulting in the promoted carrier transfer and improved performance in PScs.

关键词： cs and SCN additives photoelectric properties performance perovskite solar cell

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南京航空航天大学学报 2005年第B11期37卷 58-62页

作者：臧铁钢帅扬来南京航空航天大学机电学院南京210016

柔性制造系统控制软件(F lex ib le m anu facturing con tro l softw are,FM cs)是保证柔性制造系统正常运行、实现预定生产行为的关键。通过分析扩展面向对象Petri网(Ex tended ob ject-orien ted Petri net,EOPN)与统一建模语言(U n ... 详细信息

柔性制造系统控制软件(F lex ib le m anu facturing con tro l softw are,FM cs)是保证柔性制造系统正常运行、实现预定生产行为的关键。通过分析扩展面向对象Petri网(Ex tended ob ject-orien ted Petri net,EOPN)与统一建模语言(U n ited m ode ling language,UM L)建模的特点,并在分析柔性制造系统复杂功能层次的基础上,本文提出了一种针对FM cs,采用UM L描述方法的EOPN建模方法。该方法综合了EOPN和UM L建模的长处,支持FM cs从需求分析到模型实现的全生命周期。用该方法分析和设计的FM cs具有良好的可重用性、可扩展性和可变性,同时简化了控制软件的开发过程,降低了开发成本。

关键词：柔性制造系统柔性制造系统控制软件统一建模语言扩展面向对象Petri网

典型β-内酰胺类抗生素在臭氧氧化降解过程中毒性变化规律研究

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环境科学学报 2023年第5期43卷 206-215页

作者：敖蒙蒙魏健熊兆锟郭壮赖波宋永会中国环境科学研究院环境基准与风险评估国家重点实验室北京100012 辽宁大学环境学院沈阳110036 中国环境科学研究院水生态环境研究所北京100012 四川大学建筑与环境学院中德水环境与健康研究中心成都610065

β-内酰胺类抗生素应用广泛,近些年来在各类水体中频繁检出,其在水处理工艺过程中的毒性控制越来越受到重视.本文以4种典型β-内酰胺类抗生素为目标污染物,采用臭氧氧化和急性毒性试验等研究其在臭氧氧化过程中急性生物毒性变化规律,采... 详细信息

β-内酰胺类抗生素应用广泛,近些年来在各类水体中频繁检出,其在水处理工艺过程中的毒性控制越来越受到重视.本文以4种典型β-内酰胺类抗生素为目标污染物,采用臭氧氧化和急性毒性试验等研究其在臭氧氧化过程中急性生物毒性变化规律,采用毒性预测软件T.E.S.T.评估了4种抗生素及其氧化降解中间产物的生态毒性,并分析了中间产物(TP)结构与生物毒性之间的定量构效关系.结果表明,青霉素钠(PG)和头孢曲松钠(cs)在臭氧氧化过程中急性毒性升高,阿莫西林(AMX)和头孢氨苄(CLX)毒性变化未呈明显规律性;随着溶液pH值的升高,臭氧氧化PG和cs反应速率加快且生成更多高毒性中间产物,导致反应体系毒性增强.毒性评估结果表明,4种抗生素被认定为大鼠LD_(50)的“有毒”、非发育性毒物和致突变阴性,多数产物被认定为大鼠LD_(50)的“非常有毒”、发育毒物和致突变阳性.综合急性毒性试验和T.E.S.T.预测结果表明,反应终点毒性增强的主要原因是母体污染物分解但生成的高毒性中间产物并未被矿化,需通过加大臭氧剂量或延长反应时间以降低体系毒性.

关键词： β-内酰胺类抗生素臭氧氧化发光细菌 QSAR方法 T.E.S.T.软件毒性

Integrating the physical and genetic map of bread wheat facilitates the detection of chromosomal rearrangements

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Journal of Integrative Agriculture 2021年第9期20卷 2333-2342页

作者： ZHAO lai-bin XIE Die HUANG Lei ZHANG Shu-jie LUO Jiang-tao JIANG Bo NING Shun-zong ZHANG Lian-quan YUAN Zhong-wei WANG Ji-rui ZHENG You-liang LIU Deng-cai HAO Ming Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130P.R.China Crop Research Institute Sichuan Academy of Agricultural SciencesChengdu 610066P.R.China State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural UniversityChengdu 611130P.R.China

The bread wheat genome harbors a high content of repetitive DNA,which is amenable to detection and characterization using fluorescence in situ hybridization(FISH)*** integrated genetic map was derived from a recombinant inbred population bred from a cross between a synthetic hexaploid wheat and a commercial Chinese bread wheat cultivar,based on 28 variable FISH sites and>150000 single nucleotide polymorphism(SNP)*** majority(20/28)of the variable FISH sites were physically located within a chromosomal region consistent with the genetic location inferred from that of their co-segregating SNP *** eight exceptions reflected the presence of either a translocation(1 R/1 B,1 A/7 A)or a presumptive intra-chromosomal inversion(4 A).For eight out of the nine FISH sites detected on the Chinese Spring(cs)karyotype,there was a good match with the reference genome sequence,indicating that the most recent assembly has dealt well with the problem of placing tandem *** integrated genetic map produced for wheat is informative as to the location of blocks of tandemly repeated DNA and can aid in improving the quality of the genome sequence assembly in regions surrounding these blocks.

关键词： Triticeae Triticum turgidum repetitive DNA sequences fluorescence in situ hybridization(FISH) wheat genome synthetic hexaploid wheat

High-Performance Regular Perovskite Solar Cells Employing Low-Cost Poly(ethylenedioxythiophene) as a Hole-Transporting Material

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High-Performance Regular Perovskite Solar Cells Employing Lo...

李提摩太对大乘佛教的回应:从后殖民对东方学的批判着眼

第四届新型太阳能电池学术研讨会

作者： Xiaoqing Jiang Jianbo lai Ze Yu Licheng Sun State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT) Department of Chemistry School of Chemical Science and EngineeringKTH Royal Institute of Technology

Recently, organic-inorganic halide perovskites with the composition ABX[A = CHNH(MA), NH = CHNH(FA) or cs;B = Pb or Sn;X = Cl, Br, I] have received increasing research attention as light absorbers in solid-state thin-film solar cells..The state-of-the-art high-performing PSC devices routinely incorporated hole-transporting materials(HTMs) as p-type contacts, which play a key role in extraction and collection of the photo-generated holes from the perovskites, and thus minimizing undesired recombination losses at the interfaces. Herein, we successfully applied a facile in-situ solid-state synthesis of conducting polymer poly(3,4-ethylenedioxythiophene)(PEDOT) as a HTM, directly on top of the perovskite layer, in conventional mesoscopic perovskite solar cells(PScs)(n-i-p structure).The fabrication of the PEDOT film only involved a very simple in-situ solid-state polymerisation step from a monomer 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT) made from a commercially available and cheap starting *** excellent power conversion efficiency(PCE) is 17.0% measured at 100 mW cm illumination(AM 1.5G).The present finding highlights the potential application of PEDOT made from solid-state polymerisation as a HTM for cost-effective and highly efficient PScs.

关键词： Perovskite solar cells Hole-transporting materials Poly(3,4-ethylenedioxythiophene)

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浙江大学学报（人文社会科学版） 2010年第3期40卷 30-39页

作者：赖品超香港中文大学文化及宗教研究系

虽然李提摩太对大乘佛教的诠释受到他自己的基督教信仰影响,甚至是受到传教使命驱使,但他的进路迥然不同于具殖民色彩的东方学,并且在动机和态度上颇为符合大乘佛教的精神。他在翻译佛典的过程中,没有强调东西方宗教观念之间的差异,反... 详细信息

虽然李提摩太对大乘佛教的诠释受到他自己的基督教信仰影响,甚至是受到传教使命驱使,但他的进路迥然不同于具殖民色彩的东方学,并且在动机和态度上颇为符合大乘佛教的精神。他在翻译佛典的过程中,没有强调东西方宗教观念之间的差异,反而突出它们的相通之处,希望以此作为基督教与佛教建立合作或友谊的共同基础,而不是使佛教徒皈依基督教。基于他的著述,可以发现他实际上实践了一种后殖民的批评,与殖民势力是对抗的。他的终极目的是全人类的解放,但进路与心态截然不同于那种解救东方人的殖民主义式思维,因为他从来不曾假设西方文明更为高等。就萨义德对东方学或东方主义的批判来说,李提摩太对大乘佛教的响应可以说是一个例外,甚至是反例。

关键词：李提摩太萨义德东方主义大乘佛教基督教

Fusobacterium nucleatum colonization is associated with decreased survival of helicobacter pylori-positive gastric cancer patients

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World Journal of Gastroenterology 2021年第42期27卷 7311-7323页

作者： Yung-Yu Hsieh Shui-Yi Tung Hung-Yu Pan Te-Sheng Chang Kuo-Liang Wei Wei-Ming Chen Yi-Fang Deng Chung-Kuang Lu Yu-Hsuan lai Cheng-Shyong Wu Chin Li Department of Gastroenterology and Hepatology Chiayi Chang Gung Memorial HospitalChiayi 61301Taiwan College of Medicine Chang Gung UniversityTaoyuan 33302Taiwan Department of Applied Mathematics National Chiayi UniversityChiayi 60035Taiwan Department of Biomedical Sciences National Chung Cheng UniversityChiayi 62130Taiwan

BACKGROUND An increased amount of Fusobacterium nucleatum(***)is frequently detected in the gastric cancer-associated microbiota of the Taiwan Residents *** is known to exert cytotoxic effects and play a role in the progression of colorectal cancer,though the impact of *** colonization on gastric cancer cells and patient prognosis has not yet been *** To identify ***-dependent molecular pathways in gastric cancer cells and to determine the impact of *** on survival in gastric *** Coculture of *** with a gastric cancer cell line was performed,and changes in gene expression were *** with significant changes in expression were identified by RNA *** analysis was carried out to determine deregulated cellular functions.A cohort of gastric cancer patients undergoing gastrectomy was recruited,and nested polymerase chain reaction was performed to detect the presence of *** in resected cancer *** analysis was performed to determine whether *** colonization affects patient *** RNA sequencing and subsequent pathway analysis revealed a drastic interferon response induced by a high colonization *** response peaked within 24 h and subsided after 72 h of *** contrast,deregulation of actin and its regulators was observed during prolonged incubation under a low colonization load,likely altering the mobility of gastric cancer *** to the clinical specimen analysis,approximately one-third of the gastric cancer patients were positive for ***,and statistical analysis indicated that the risk for colonization increases in late-stage cancer *** analysis demonstrated that *** colonization was associated with poorer outcomes among patients also positive for Helicobacter pylori(***).CONCLUSION *** colonization leads to deregulation of actin dynamics and likely changes cance

关键词： Fusobacterium nucleatum Helicobacter pylori Gastric cancer Survival Interferon Mobility

侵入性凶险性前置胎盘腹主动脉球囊封堵下剖宫产大出血的MRI预测模型构建

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放射学实践 2022年第2期37卷 195-201页

作者：杨冯棱赖华王志刚敬怀波张倩电子科技大学医学院附属妇女儿童医院·成都市妇女儿童中心医院放射科成都611731 电子科技大学医学院附属妇女儿童医院·成都市妇女儿童中心医院产科成都611731

目的:探讨产前MRI检查在预测侵入性凶险性前置胎盘(IPPP)产妇腹主动脉球囊封堵联合剖宫产(AABO-cs)大出血中的价值并构建MRI预测模型。方法:回顾性分析122例(粘连型23例,植入型77例,穿透型22例)经手术和/或病理证实的IPPP产妇的临床及MR... 详细信息

目的:探讨产前MRI检查在预测侵入性凶险性前置胎盘(IPPP)产妇腹主动脉球囊封堵联合剖宫产(AABO-cs)大出血中的价值并构建MRI预测模型。方法:回顾性分析122例(粘连型23例,植入型77例,穿透型22例)经手术和/或病理证实的IPPP产妇的临床及MRI资料,根据AABO-cs术中出血量的差异将其分为大出血组和非大出血组,采用独立样本t检验、Mann-Whitney U检验及χ^(2)检验分析出血量与临床特征、MRI征象的关系,将单因素分析中有统计学差异的MRI征象进行多因素Logistic回归分析,建立回归模型,采用Hosmer-Lemeshow goodness-of-fit检验及受试者工作特性(ROC)曲线评估此模型的诊断效能。结果:单因素分析结果显示胎盘穿透、胎盘主体附着于子宫前壁下段、胎盘增厚、胎盘凹陷征、T_(2)WI胎盘低信号带、子宫局限性膨凸、子宫肌层欠连续、浆膜下异常血管影、胎盘内异常血管影及宫颈形态异常在大出血与非大出血两组间的差异有统计学意义(P值均cs术中大出血的独立危险因素,Logistic回归模型为Logit P=-3.899+1.942X1+1.841X2+1.703X3+1.612X4,该模型的诊断准确率为86.9%,ROC曲线下面积为0.923(95%CI:0.873~0.972),Hosmer-Lemeshow goodness-of-fit检验表明模型的拟合度较好(P=0.582),当最佳预测概率>45.4%时,其敏感度、特异度分别为82.0%、90.3%。结论:产前MRI对IPPP产妇AABO-cs术中大出血有提示作用,本研究建立的MRI回归模型能够较好地量化评估其出血风险,为个体化治疗方案的制定提供参考。

关键词：凶险性前置胎盘腹主动脉球囊封堵剖宫产术出血风险磁共振成像预测模型