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公共图书馆科普阅读推广创新路径研究——以金陵图书馆为例

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大学图书情报学刊 2024年第5期42卷 41-48页

作者：蒋倩徐基田徐昊丰金陵图书馆南京210019 南通市图书馆 226007

开展科普阅读推广,是图书馆社会教育职能的延伸,也是公共图书馆的创新服务之一。文章阐述了图书馆科普阅读推广研究现状,以金陵图书馆为研究对象,从平台建设、资源整合、创新路径等方面梳理科普阅读推广实践,认为科普阅读推广过程中存... 详细信息

开展科普阅读推广,是图书馆社会教育职能的延伸,也是公共图书馆的创新服务之一。文章阐述了图书馆科普阅读推广研究现状,以金陵图书馆为研究对象,从平台建设、资源整合、创新路径等方面梳理科普阅读推广实践,认为科普阅读推广过程中存在着部门间活动分散同质化、过度依赖社会力量、服务对象单一、重活动轻阅读等问题,提出从顶层设计、分众阅读推广、科普人才培养、回归阅读等创新科普阅读推广路径。

关键词：图书馆科学普及科普阅读推广阅读推广

中西医结合治疗肾虚血瘀型腰椎间盘突出症临床观察

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山西中医 2024年第3期40卷 19-21页

作者：王鑫睿徐无忌湖南中医药大学第二附属医院长沙410000

目的:观察六味地黄汤加味联合甲钴胺片和右酮洛芬胶囊治疗肾虚血瘀型腰椎间盘突出症的临床疗效。方法:选取符合纳入标准的腰椎间盘突出症患者60例,采用随机数字表法将其分为两组各30例。对照组予甲钴胺片联合右酮洛芬胶囊,治疗组在对照... 详细信息

目的:观察六味地黄汤加味联合甲钴胺片和右酮洛芬胶囊治疗肾虚血瘀型腰椎间盘突出症的临床疗效。方法:选取符合纳入标准的腰椎间盘突出症患者60例,采用随机数字表法将其分为两组各30例。对照组予甲钴胺片联合右酮洛芬胶囊,治疗组在对照组基础上加用六味地黄汤加味。2周为1个疗程,治疗2个疗程。比较两组患者治疗前后视觉模拟量表(VAS)评分、日本骨科协会评估治疗分数(JOA)评分、Oswestry功能障碍指数问卷表(ODI)评分。结果:治疗组总有效率为90.00%,高于对照组的66.67%(P<0.05);治疗后,治疗组VAS、JOA、ODI评分均明显改善(P<0.05),且改善程度优于对照组(P<0.05);治疗组复发率为7.40%,低于对照组的25.00%,两组比较差异有统计学意义(P<0.05)。结论:六味地黄汤加味联合甲钴胺片和右酮洛芬胶囊治疗肾虚血瘀型腰椎间盘突出症效果较好,可缓解患者腰部疼痛症状,改善其生活质量。

关键词：腰椎间盘突出症肾虚血瘀六味地黄汤中西医结合疗法

Agglutinative Language Speech Recognition Using Automatic Allophone Deriving

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Chinese Journal of Electronics 2016年第2期25卷 328-333页

作者： xu ji PAN jielin YAN Yonghong The Key Laboratory of Speech Acoustics and Content Understanding Chinese Academy of Sciences

Agglutinative language involves agglutination extensively, which results in the significant pronunciation variations in different contexts. Therefore, it is a problem to use phoneme sets translated from their written forms as basic units for acoustic modeling, due to the incapability to capture the pronunciation variations in Large-vocabulary continuous speech recognition(LVCSR).This paper presented a novel approach called Automatic allophone deriving(AAD) to create allophone candidates without any linguistic prior knowledge. Furthermore, an enhanced approach AAD-LT is proposed in which longtime features are used in AAD approach. Experiments are conducted on three languages which contains two agglutinative ones and an analytic one. The experiments suggest that AAD Long-time(AAD-LT) is very effective for the agglutinative languages in which more than 10% relative CER reduction is obtained.

关键词： Agglutinative language Large-vocabulary continuous speech recognition(LVCSR) Allophone Unsupervised

Parametric Resonance Analyses for Spar Platform in Irregular Waves

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China Ocean Engineering 2018年第2期32卷 236-244页

作者： YANG He-zhen xu Pei-ji School of Engineering University of GlasgowGlasgow G128QQUnited Kingdom School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The parametric instability of a spar platform in irregular waves is analyzed. Parametric resonance is a phenomenon that may occur when a mechanical system parameter varies over time. When it occurs, a spar platform will have excessive pitch motion and may capsize. Therefore, avoiding parametric resonance is an important design requirement. The traditional methodology includes only a prediction of the Mathieu stability with harmonic excitation in regular waves. However, real sea conditions are irregular, and it has been observed that parametric resonance also occurs in non-harmonic excitations. Thus, it is imperative to predict the parametric resonance of a spar platform in irregular waves. A Hill equation is derived in this work, which can be used to analyze the parametric resonance under multi-frequency excitations. The derived Hill equation for predicting the instability of a spar can include non-harmonic excitation and random phases. The stability charts for multi-frequency excitation in irregular waves are given and compared with that for single frequency excitation in regular waves. Simulations of the pitch dynamic responses are carried out to check the stability. Three-dimensional stability charts with various damping coefficients for irregular waves are also investigated. The results show that the stability property in irregular waves has notable differences compared with that in case of regular waves. In addition, using the Hill equation to obtain the stability chart is an effective method to predict the parametric instability of spar platforms. Moreover, some suggestions for designing spar platforms to avoid parametric resonance are presented, such as increasing the damping coefficient, using an appropriate RAO and increasing the metacentric height.

关键词： spar platform instability parametric resonance Mathieu equation irregular waves dynamic responses

Simulation and prediction in laser bending of silicon sheet

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 188-193页

作者： WANG xu-yue xu Wei-xing xu Wen-ji HU Ya-feng LIANG Yan-de WANG Lian-ji Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education Dalian University of Technology Dalian 116024 China

The laser bending of single-crystal silicon sheet （0.2 mm in thickness） was investigated with JK701 Nd：YAG laser. The models were developed to describe the beam characteristics of pulsed laser. In order to simulate the process of laser bending, the FEM software ANSYS was used to predict the heat temperature and stress-strain fields. The periodic transformation of temperature field and stress-strain distribution was analyzed during pulsed laser scanning silicon sheet. The results indicate that the mechanism of pulsed laser bending silicon is a hybrid mechanism in silicon bending, rather than a simple mechanism of TGM or BM. This work also gets silicon sheet bent after scanning 6 times with pulsed laser, and its bending angle is up to 6.5°. The simulation and prediction results reach well agreement with the verifying experiments.

关键词： laser bending silicon sheet pulsed laser simulation

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交叉融合性新专业柔性电子学的课程体系建设

高等工程教育研究 2024年第3期 15-18页

作者：朱先军刘蕾蕾郭艳东许吉南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院

柔性电子学是面向国家重大战略需求的跨学科交叉融合领域设立的新专业。本文阐明了柔性电子学专业多学科交叉融合性的特点,阐述了面向交叉融合的前沿学科需求,突出多学科交叉融合的特点,进行柔性电子人才培养的课程体系构建和优化的思路... 详细信息

柔性电子学是面向国家重大战略需求的跨学科交叉融合领域设立的新专业。本文阐明了柔性电子学专业多学科交叉融合性的特点,阐述了面向交叉融合的前沿学科需求,突出多学科交叉融合的特点,进行柔性电子人才培养的课程体系构建和优化的思路,重点介绍了专业核心课程的特色和实践教学环节设置,详细介绍了传统课程融合交叉学科特色的教学内容改革。

关键词：交叉融合柔性电子人才培养课程体系

青藏高原野生宽叶羌活根际土壤微环境变化对光合作用的影响

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中国土壤与肥料 2024年第7期 184-191页

作者：胥生荣马瑞丽田国鹏祁焕华徐吉媛韩梅花青海大学医学院/青海省糖脂代谢疾病防控中医药重点实验室青海西宁8810001

为进一步研究青藏高原野生宽叶羌活药材形成对土壤环境的响应特性,明确土壤环境在宽叶羌活不同生长年限的差异,以不同生长年限野生宽叶羌活根际土壤为试验材料,研究根际土壤酶活性和有机碳含量的变化规律。结果表明,宽叶羌活对根围土壤... 详细信息

为进一步研究青藏高原野生宽叶羌活药材形成对土壤环境的响应特性,明确土壤环境在宽叶羌活不同生长年限的差异,以不同生长年限野生宽叶羌活根际土壤为试验材料,研究根际土壤酶活性和有机碳含量的变化规律。结果表明,宽叶羌活对根围土壤孔隙度的影响主要在土层0~40cm深处,5年生地块平均土壤孔隙度减小至对照的88.56%,对土层50~100cm处影响较小。土壤含水量在土层0~50cm处变化显著,前3年根围土壤含水量逐年增大,达到对照的105.59%,土层60cm以下的土壤水分含量变化规律一致且差异不显著。土壤有机碳含量逐渐下降,从对照到5年生地块,土壤总有机碳含量降低到原来的41.75%,其中,可溶性有机碳含量降低到原来的51.78%,颗粒有机碳含量降低到原来的18.30%,活性有机碳含量降低到原来的24.42%,易氧化有机碳含量降低到原来的21.76%,微生物量碳含量降低到原来的47.31%;可溶性有机碳含量在3年生和5年生土壤间差异不显著,活性有机碳和易氧化有机碳含量在2年生和3年生土壤间差异不显著。随着生长年限增长,土壤脲酶、多酚氧化酶和过氧化氢酶活性呈先降低后升高的变化趋势,土壤脱氢酶和蔗糖酶活性没有明显变化趋势,土壤磷酸酶活性呈显著升高的变化趋势。随着株龄增大,叶片表观量子效率显著减小,光补偿点、光饱和点和暗呼吸速率均显著增大;叶片的原初光能转换效率、光化学淬灭系数和光合电子传递效率均表现不同程度的减小,非光化学淬灭系数表现显著增大,综合分析表明,随着生长年限的增加,土壤理化活性和部分土壤酶及有机碳含量降低,土壤微环境对根系生物活性的影响作用增大,根系生存环境的变化影响植株对土壤水分和营养物质的吸收,植株叶片同化效率降低,进而影响宽叶羌活药材质量和品质形成。

关键词：青藏高原宽叶羌活有机碳土壤酶光合作用

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The primary influence of shear band evolution on the slope bearing capacity

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 1023-1037页

作者： Lanting Wei Qiang xu Shanyong Wang xu ji Chengdu University of Technology ChengduChina Priority Research Centre for Geotechnical Science and Engineering School of EngineeringUniversity of NewcastleNewcastleAustralia

Slope bearing capacity is one of the most important characteristics in slope engineering and is strongly influenced by weak planes,loading conditions,and slope *** presenting the evolution of slip surfaces,this paper explored how the slope bearing capacity is affected by widely observed influencing *** initiation and propagation of slip surfaces are presented in laboratory model tests of slope using the transparent soil *** band evolution under various weak planes,loading conditions,and slope geometries were experimentally presented,and slope bearing capacities were analyzed with the process of shear band *** paper verified that slip surface morphologies have a strong relation with the slope bearing *** same slip surface morphology can have different evolutionary *** this case,it is the shear band evolution that determines the slope bearing capacity,not the morphology of the slip *** influencing factors such as pre-existing weak planes,loading conditions,and slope geometry strongly affect the slope bearing capacity as these factors govern the process of shear band evolution inside the slope.

关键词： Slope bearing capacity Shear band evolution Failure mechanism Transparent soil

弯道湿滑路面抗滑性能仿真与安全行车速度计算

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科学技术与工程 2024年第24期24卷 10491-10499页

作者：彭佳徐纪东汪星钧何建国重庆交通大学交通运输学院重庆400074

弯道交通事故高发,车辆超速行驶、潮湿路面抗滑性能不足及离心力作用所造成的车辆侧向滑移是其主要事故类型。明确潮湿弯道车辆最大安全行驶速度对于保证弯道安全驾驶至关重要,由于轮胎-水流-路面之间的相互作用机理复杂,涉及变量较多(... 详细信息

弯道交通事故高发,车辆超速行驶、潮湿路面抗滑性能不足及离心力作用所造成的车辆侧向滑移是其主要事故类型。明确潮湿弯道车辆最大安全行驶速度对于保证弯道安全驾驶至关重要,由于轮胎-水流-路面之间的相互作用机理复杂,涉及变量较多(包括弯道几何参数、路面表面特征、轮胎运动特性、水膜厚度等),目前还没有从抗滑模拟角度获取降雨工况下弯道最大安全行驶速度的工程实践。基于固体力学和流体力学,建立轮胎-水流-路面耦合的侧偏抗滑模型,并依据抗滑测试值对模型预测准确性进行验证。以侧偏抗滑模型为基础,结合侧滑机理分析,得到所验证沥青路面在不同弯道半径、超高和水膜厚度下的最大安全行驶速度,并与美国国家公路与运输协会(American Association of State Highway and Transportation, AASHTO)设计速度进行对比。结果表明:现有设计速度规范对雨天环境因素考虑不足,当降雨强度较大时,车辆以AASHTO设计速度行驶会发生侧向滑移。该结果验证了所建立侧偏抗滑模型求解最大安全车速的方法对识别具有高滑移风险的雨天环境状况和低抗滑性能路面的有效性,并可为弯道路面摩擦管理和混合料设计提供新手段。

关键词：路面抗滑性能安全行车速度弯道有限元模型侧向滑移