检索结果-南通市图书馆

Large language model and domain-specific model collaboration for smart education

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2024年第3期25卷 333-341页

作者： Yawei luo Yi YANG School of Software Technology Zhejiang UniversityNingbo 315048China College of Computer Science and Technology Zhejiang UniversityHangzhou 310027China

In this paper,we introduce the large language model and domain-specific model collaboration(LDMC)framework designed to enhance smart *** LDMC framework leverages the comprehensive and versatile knowledge of large domain-general models,combines it with the specialized and disciplinary knowledge from small domainspecific models(DSMs),and incorporates pedagogy knowledge from learning theory *** integration yields multiple knowledge representations,fostering personalized and adaptive educational *** explore various applications of the LDMC framework in the context of smart education.

关键词： smart language knowledge

Switching Behavior of Cascode GaN Under Influence of Gate Driver

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第4期10卷 1816-1833页

作者： Bin luo Guangzhao luo Sihai Li School of Automation Northwestern Polytechnical UniversityXi’an 710072China

With high-frequency,low power dissipation and high-efficiency characteristics,Gallium nitride(GaN)power devices are of significant benefit in designing high-speed motor drives,as they improve performance and reduce ***,due to the cascode structure,coupling with the parasitics in gate driver and power circuits,power converters based on cascode GaN are prone to overshoot and oscillate on switching waveforms,which may lead to serious EMC problems,or even device *** complicated structure of cascode GaN device makes the gate driver design comparatively *** analytical model of the switching process considering gate driver parameters is proposed in this *** influence of gate driver parameters on switching behavior is investigated from the perspective of switching speed,waveform overshoot,and power ***-offs among overshoot,switching speed,and power loss are discussed;guidelines to design gate driver parameters are given.

关键词： Gallium nitride(GaN) gate driver oscillation and overshoot switching characteristics

不同中主应力下压实黄土变形特性的真三轴试验研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

水文地质工程地质 2016年第5期43卷 76-80页

作者：杨利国骆亚生王瑞瑞黄河水利职业技术学院土木工程系河南开封475003 西北农林科技大学水利与建筑工程学院陕西杨凌712100 江苏淮安交通勘查设计研究院江苏淮安223021

通过压实黄土在不同中主应力系数和不同σ3时的真三轴试验,研究了中主应力对压实黄土变形特性的影响。研究表明：随着中主应力系数的增大,达到同一主应变的主应力差σ_1～σ_3越大,且曲线从一开始就呈硬化型,证明中主应力对压实黄土的... 详细信息

通过压实黄土在不同中主应力系数和不同σ3时的真三轴试验,研究了中主应力对压实黄土变形特性的影响。研究表明：随着中主应力系数的增大,达到同一主应变的主应力差σ_1～σ_3越大,且曲线从一开始就呈硬化型,证明中主应力对压实黄土的强度有一定的加固作用。不同的中主应力系数下,ε_1～ε_v关系曲线除b=1之外均出现“峰值”,且大约在主应变发展至4%～6%左右出现了交叉,交叉后曲线变化有明显的区间效应。随着中主应力系数b的增加,达到相同广义剪应变对应的广义剪应力q也越大。对广义剪应力与平均主应力比（q/p）与主应变（ε_1）归一化,随着b值的增加,曲线依次降低。在b=0～0.5之间,曲线之间的区分度较好,曲线降低幅度较大。b=0.5～1之间曲线之间的区分度较差,曲线几乎重合。

关键词：压实黄土中主应力系数真三轴变形

Precision regulation of plant aromatic amino acid homeostasis

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第6期67卷 1316-1317页

作者： Jie luo Yazhouwan National Laboratory(YNL) Sanya 572025China School of Breeding and Multiplication(Sanya Institute of Breeding and Multiplication) Hainan UniversitySanya 572025China

The aromatic amino acids(AAAs)phenylalanine(Phe),tyrosine(Tyr),and tryptophan(Trp)are not only building blocks of proteins,but also precursors of numerous primary and specialized metabolites(Schenck and Maeda,2018).For instance,Trp is a precursor of the phytohormone auxin and the plant defense compounds indole glucosinolates,while Phe serves as a precursor of lignin,coumarin and *** plant natural products such as morphine and vitamin E are derived from Tyr,and have been employed in human medicine and nutrition(Schenck and Maeda,2018;Wu et al.,2022;Yokoyama et al.,2021).

关键词： aromatic instance coumarin

直剪试验方法对轻量土抗剪强度的影响规律研究

在线全文

学校读者我要写书评

暂无评论

水利水电技术（中英文） 2023年第4期54卷 161-170页

作者：郭鹏斐侯天顺刘茜骆亚生西北农林科技大学水利与建筑工程学院陕西杨凌712100 陕西省引汉济渭工程建设有限公司陕西西安710011

【目的】为了快速、准确地获取轻量土抗剪强度相关指标,确定不同直剪试验方法对轻量土抗剪强度的差异,【方法】通过快剪、固结快剪以及慢剪试验,分析了轻量土剪应力-剪切位移曲线、黏聚力和内摩擦角在不同剪切方法及不同配比下的变化规... 详细信息

【目的】为了快速、准确地获取轻量土抗剪强度相关指标,确定不同直剪试验方法对轻量土抗剪强度的差异,【方法】通过快剪、固结快剪以及慢剪试验,分析了轻量土剪应力-剪切位移曲线、黏聚力和内摩擦角在不同剪切方法及不同配比下的变化规律。【结果】结果显示:轻量土的抗剪强度及抗剪强度指标随着其配比不同表现出一定的差异,其中,随着EPS颗粒体积比的增大,剪应力-剪切位移曲线由应变软化型转变为应变硬化型,轻量土抗剪强度大幅降低。随着水泥掺量的增加,轻量土抗剪强度总体呈现增大的趋势,同时轻量土黏聚力随EPS颗粒体积比增大而大幅减小,随水泥掺量的增大略有增大;内摩擦角随EPS颗粒体积比的增大急剧减小,随水泥掺量增大略微减小。其中以快剪试验为例,当水泥掺量为15%、EPS颗粒体积比由20%增长至40%和60%时,轻量土黏聚力相对减少量为22.20%、44.73%。【结论】结果表明,不同EPS颗粒体积比下,慢剪方法对轻量土试样黏聚力的变化较为敏感,而快剪方法对轻量土试样内摩擦角的变化较为敏感。与素土相比,三种直剪方法下得到的不同配比轻量土剪应力-剪切位移曲线形态、抗剪强度值均比较相近,实际工程中可用直剪快剪方法获取轻量土抗剪强度。

关键词：轻量土直剪试验抗剪强度黏聚力内摩擦角

In Situ Polymer Gel Electrolyte in Boosting Scalable Fibre Lithium Battery Applications

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第11期16卷 170-173页

作者： Jie luo Qichong Zhang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of SciencesSuzhou Institute of Nano-Tech and Nano-Bionics398 Ruoshui RoadSuzhou 215123People’s Republic of China

The poor interfacial stability not only deteriorates fibre lithium-ion batteries(FLBs)performance but also impacts their scalable *** efficiently address these challenges,*** Peng team proposed a generalized channel structures strategy with optimized in situ polymerization technology in their recent *** resultant FLBs can be woven into different-sized powering textiles,providing a high energy density output of 128 Wh kg^(-1) and simultaneously demonstrating good durability even under harsh *** a promising strategy expands the horizon in developing FLB with particular polymer gel electrolytes,and significantly ever-deepening understanding of the scaled wearable energy textile system toward a sustainable future.

关键词： High-performance fibre lithium batteries Gel electrolytes Channel structures Stable interface Scalable application

基于等含水率试验结果的非饱和原状黄土本构模型

在线全文

学校读者我要写书评

暂无评论

西安理工大学学报 2017年第4期33卷 408-412页

作者：胡海军崔玉军骆亚生西北农林科技大学水利与建筑工程学院陕西杨凌712100 Ecole des Ponts Paris Tech Laboratoire Navier

基于国内通常进行的非饱和原状黄土等含水率试验规律,在Barcelona模型基础上,建立了考虑非饱和原状黄土结构性和水敏性两个主要特性的本构模型,并检验了等含水率等向压缩试验和三轴压缩试验中该模型的力学响应。结果表明该模型能反映等... 详细信息

基于国内通常进行的非饱和原状黄土等含水率试验规律,在Barcelona模型基础上,建立了考虑非饱和原状黄土结构性和水敏性两个主要特性的本构模型,并检验了等含水率等向压缩试验和三轴压缩试验中该模型的力学响应。结果表明该模型能反映等向压缩试验中不同含水率试样在结构屈服应力之前压缩线趋向重合,屈服应力之后压缩线相互趋近的特性;中等含水率试样三轴压缩试验中初始弹性模量随着围压先减少后增大的特性,e-lgp空间路径在低围压情况呈现明显转折的现象。模型共11个参数,均能从国内常用的等含水率试验获取。

关键词：原状黄土本构模型结构性水敏性

Traditional Chinese Medicine in the treatment of recurrent respiratory tract infections in children: an overview of systematic reviews and Meta-analyses

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2024年第5期44卷 871-884页

作者： DENG yasheng HAN Siyin XI Lanhua HUANG Hui LIANG Tianwei ZHENG Yiqing FAN Yanping LIN Jiang School of Basic Medical Sciences Guangxi University of Chinese Medicine School of Basic Medical Sciences Guangxi University of Chinese MedicineGuangxi Key Laboratory of Marine Drugs Department of Pharmacy Hainan Traditional Chinese Medicine Hospital

OBJECTIVE: To evaluate and summarise the evidence from published Meta-analyses/systematic reviews(MAs/SRs) of Traditional Chinese Medicine(TCM) in the treatment of recurrent respiratory tract infections(RRTIs) and to provide a scientific basis for the clinical treatment of RRTIs with TCM. METHODS: Studies were retrieved from Chinese and English databases including the China National Knowledge Infrastructure, Wanfang database, China Science and Technology Journal Database, SinoM ed, PubM ed, Web of Science, the Cochrane Library and EMbase from their establishment date to March 2023. Involved studies were screened, extracted, and evaluated for quality by two researchers independently. The a measurement tool to assess systematic reviews(AMSTAR) 2 scale was used for methodological quality evaluation, as well as the preferred reporting items for systematic reviews and Meta-analyses(PRISMA) 2020 statement for report quality evaluation, the risk of bias in systematic reviews(ROBIS) tool for risk of bias, and the grading of recommendations, assessment, development and evaluation(GRADE) quality assessment tool for evidence quality. RESULTS: Twenty MAs/SRs studies were included, including analyses of 274 original studies involving 38 335 patients with RRTIs. The AMSTAR 2 scale evaluation results showed that 19 studies were of very low quality and one of moderate quality. The ROBIS evaluation results showed that 11 MAs/SRs were at high risk and nine at low risk of bias. The PRISMA 2020 report quality showed the included studies had scores between 23.5 and 35.5, among them one with high quality, 17 with moderate quality and two with low quality. The GRADE system results showed that among 126 outcome indicators, only 17 had moderate quality of evidence, 27 had low quality, 82 had very low quality, and none had high quality. CONCLUSIONS: The MAs/SRs methodological quality of using TCM for treatment RRTIs is generally poor, the quality of reports as well as of evidence is generall

关键词： Meta-analysis child medicine, Chinese traditional randomized controlled trial respiratory tract infections systematic review

同方期刊数据库

Catalyst design and structure control for photocatalytic refineries of cellulosic biomass to fuels and chemicals

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第7期94卷 102-127页

作者： Lulu Sun Nengchao luo State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Lignocellulosic biomass is the largest renewable hydrocarbon resource on *** cellulose,one of the major components of lignocellulose,powered by solar energy is a promising way of providing lowcarbon-footprint energy chemicals such as H_(2),HCOOH,CO,and transportation ***-of-the-art biorefineries target the full use of biomass feedstocks as they have a maximum collection radius of 75-100 km,requesting efficient and selective photocatalysts that significantly influence the outcome of photocatalytic ***-performed photocatalysts can harvest a broad solar spectrum and are active in breaking the chemical bonds of cellulose,decreasing the capital investments of ***,photocatalysts should control the selectivity of cellulose conversion,originating target products to level down separation *** separation in photocatalysts and interfacial charge transfer between photocatalysts and cellulose affect the activity and selectivity of cellulose refineries to H2 and carbonaceous *** account for the challenges above,this review summarizes photocatalysts for the refineries of cellulose and downstream platform molecules based on the types of products,with the structure features of different types of photocatalysts discussed in relation to the targets of either improving the activity or product *** addition,this review also sheds light on the methods for designing and regulating photocatalyst structures to facilitate photocatalytic refineries of cellulose and platform molecules,meanwhile summarizing proposed future research challenges and opportunities for designing efficient photocatalysts.

关键词： Photocatalysts Biorefineries Cellulose Fuels Hydrogen