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短期电价预测的机器学习方法:现状、挑战与展望

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河南科学 2025年第1期43卷 90-98页

作者：郑志勇陈田原胡哲许群河南省科学院数学研究所郑州450046 中国人民大学数学学院北京100872

随着全国统一电力市场的逐步建设,电价预测领域吸引了越来越多的学者关注。开发高效、精准的短期电价预测模型,不仅能够为电力现货市场的买卖双方提供决策支持,还能提升各方的风险控制能力,从而为建立高效统一的电力市场提供量化支撑。... 详细信息

随着全国统一电力市场的逐步建设,电价预测领域吸引了越来越多的学者关注。开发高效、精准的短期电价预测模型,不仅能够为电力现货市场的买卖双方提供决策支持,还能提升各方的风险控制能力,从而为建立高效统一的电力市场提供量化支撑。由于电力价格有随机性大、波动性高和时效性强等特点,将机器学习方法应用在短期电价预测领域能够综合考虑多方因素,能在较短的时间内拟合较为复杂的非线性电价数据,得到更为精准的预测结果。本文对基于机器学习的短期电力价格预测方法进行了综述,深入分析了各类方法在不同情境下的预测效果、适用性及其优势与不足,并对未来研究方向进行了展望。

关键词：电力现货市场电价预测机器学习深度学习 Transformer模型

基于LibQUAL+TM的应用型本科高校图书馆服务质量评价量表

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武夷学院学报 2025年第1期44卷 103-109页

作者：施航海陈添源李晓青厦门理工学院图书馆福建厦门361024 闽南师范大学图书馆福建漳州363000 厦门理工学院经济与管理学院福建厦门361024

在LibQUAL+TM评价体系基础上,结合文献研究和专家读者访谈设计了应用型本科高校图书馆服务质量评价指标调查问卷,以应用型本科高校图书馆读者为样本,主要采用验证性因素分析和探索性因素分析方法,最终确定了包括5个维度和26个测量指标... 详细信息

在LibQUAL+TM评价体系基础上,结合文献研究和专家读者访谈设计了应用型本科高校图书馆服务质量评价指标调查问卷,以应用型本科高校图书馆读者为样本,主要采用验证性因素分析和探索性因素分析方法,最终确定了包括5个维度和26个测量指标的应用型本科高校图书馆服务质量评价量表。实证研究验证了该量表具有优良的信度与效度,适合应用型本科高校图书馆作为其服务质量的评价工具,为提升图书馆服务质量提供科学依据。

关键词：图书馆服务质量 LibQUAL+TM 评价量表探索性因素分析验证性因素分析

Influencing mechanism and hydrogeological implications of water level fluctuation of lakes in the northern Qaidam Basin,Qinghai-Tibet Plateau

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Journal of Oceanology and Limnology 2023年第4期41卷 1243-1257页

作者： Yaping chenG Qishun FAN tianyuan chen Haotian YANG Qingkuan LI Chunmei HAN Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes Xining 810008China University of Chinese Academy of Sciences Beijing 100049China

The Qaidam Basin(QB)is a concentrated distribution area and chemical industrial bases of salt lakes in *** in the QB have been expanding during the past 20 *** lake expansion resulted in some considerable scientific issues on the protection of salt lake resources and infrastructure,and monitoring of hydrological processes at the lake-basin *** the spatial-temporal trends of lake changes on the Qinghai-Tibet Plateau(QTP)have been well documented,the underlying influencing mechanism and hydrogeological implications of rapid lake changes in the QB are not well *** lakes in the northern QB were selected to investigate lake water level fluctuations on different time scales based on extensive in-situ monitoring and satellite *** influencing mechanism and hydrogeological implications of rapid changes of terminal lakes were discussed in combination with the reported increasing precipitation rate and mass balance of glaciers in the northern *** reveal the following:(1)the fluctuation pattern of Sugan Lake was asynchronous and out of phase with that of Xiao Qaidam and Toson lakes during the monitoring period;(2)Sugan Lake water rose gradually,and the rise interval was from late April to early *** contrast,Xiao Qaidam and Toson lakes took on a rapid and steep rise,and the rise intervalwas from late July to September;(3)the influencing mechanisms for rapid lake fluctuations are controlled by different factors:glacier and snow melting with increasing temperature for Sugan Lake and increasing precipitation for Xiao Qaidam and Toson lakes;(4)in accordance with different intervals and influencing mechanisms of rapid lake expansions in the QB,hydrological risk precaution of lakes and corresponding river catchments was conducted in different parts of the *** study provided an important scientific basis for assessing the hydrological process and hydrological risk precaution,and protection of salt lake resources al

关键词： lake level fluctuation influencing mechanism hydrogeological implication northern Qaidam Basin in-situ monitoring

Recharge processes limit the resource elements of Qarhan Salt Lake in western China and analogues in the evaporite basins

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Journal of Oceanology and Limnology 2023年第4期41卷 1226-1242页

作者： Hualing SONG Qishun FAN Qingkuan LI tianyuan chen Haotian YANG Chunmei HAN Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes Xining 810008China University of Chinese Academy of Sciences Beijing 100049China

The Qarhan Salt Lake(QSL)in western China is K-Sr-Li-B-Br-Rb multi-resource coexisting Quaternary brine *** research efforts have been directed to the origin of K-Li resources and evolutionary history of the ***,the study on the different sources,recharge processes,and differential distribution patterns for these resource elements in brine deposits is still ***,we measured Li-B concentrations and H-O-Sr-B isotopic compositions of different waters(river,spring,and brine)from the QSL,combined with the reported K-Sr contents and multiple isotopes of waters,to discuss the recharge,source of K-Sr-Li-B and their spatial distributions,by analogy with other evaporite basins in the *** results show that:(1)the K-Li-B-Sr elemental concentrations of brines and their spatial distribution in the QSL are diverse;(2)high K and Sr values are distributed in Dabuxun and Qarhan sections,respectively,which are controlled by Ca-Cl springs in the northern QSL;on the contrary,Li and B values are enriched in the Bieletan section and are charged by thermal springs in the Kunlun Mountains;(3)the formation and evolution of Ca-Cl and thermal springs constrain fundamentally on the recharge processes of K-Sr and Li-B elements in the terminal salt lakes of the Qaidam Basin(QB);(4)some analogues of recharge processes limit the resource elements of the QSL and other salt lakes(Da Qaidam,Lop Nur,Zhabuye,Atacama,and Guayatayoc)in the world provides a reference for the resource exploration in deep formation waters in the evaporite basins.

关键词： K-Sr-Li-B elements differential distribution recharge process Qarhan Salt Lake(QSL) analogue

AUTOMATED ASSESSMENT OF EPIDERMAL THICKNESS AND VASCULAR DENSITY OF PORT WINE STAINS OCT IMAGE

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Journal of Innovative Optical Health Sciences 2014年第1期7卷 45-51页

作者： chenGMING WANG TIANchenG HUO JING-GAO ZHENG NING ZHANG tianyuan chen WENCHAO LIAO YING WANG YING GU PING XUE Department of Physics and State Key Laboratory of Low-dimensional Quantum Physics Tsinghua University Beijing 100084P.R.China Department of Laser Medicine Chinese PLA General Hospital Beijing 100853P.R.China

Optical coherence tomography(OCT)enables in vivo imaging of port wine stains(PWS)*** knowledge of vascular struct ure and epidermal thickness(ET)of PWS may aid the objectivediagnosis and optimal *** obtain the structural parameters more rapidly and avoiduser intervention,an automated algorithm of energy map is introduced based on intensity andedge information to extract the skin surface using dynamic programming ***,an averaged A-scan analysis is performed to obtain the mean ET and the relative intensity ofdermis indicating the corresponding vascular *** approach is currently successfullyapplied in clinical diagnosis and shows promising guidance and assessment of PDT treatment.

关键词： Optical coherence tomography port wine stains epidermal thickness image proces.sing photodynamic therapy

不同菜用甘薯品种茎尖代谢产物鉴定及途径分析

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中国农业科技导报(中英文) 2025年第2期27卷 62-69页

作者：张奕萱李慧峰黄咏梅李彦青滑金锋银捷陈天渊肖冬莫云川广西大学农学院广西农业环境与农产品安全重点实验室南宁530004 广西壮族自治区农业科学院玉米研究所南宁530007 广西壮族自治区农业科学院旱粮作物研究所南宁530007

为研究代谢产物对甘薯生长发育的影响,以甘薯茎尖为研究对象,利用液相色谱-质谱联用(liquid chromatograph-mass spectrometer,LC-M)分离鉴定南宁菜、福菜薯18号、桂菜薯1号、桂菜薯2号、福薯7-6和台农71共6种菜用甘薯的差异代谢产物,... 详细信息

为研究代谢产物对甘薯生长发育的影响,以甘薯茎尖为研究对象,利用液相色谱-质谱联用(liquid chromatograph-mass spectrometer,LC-M)分离鉴定南宁菜、福菜薯18号、桂菜薯1号、桂菜薯2号、福薯7-6和台农71共6种菜用甘薯的差异代谢产物,探讨代谢途径的差异。结果表明,6个甘薯品种共得到差异代谢物4210种,其中上调2229种,下调1981种,表明不同甘薯品种间存在显著差异。差异代谢物涉及的代谢途径主要包括初级胆汁酸生物合成、吲哚生物碱生物合成、黄酮和黄酮醇生物合成和色氨酸代谢,且不同品种间差异代谢物的积累和代谢途径也存在较大差异。因此,推测差异代谢物的积累和代谢途径的差异对甘薯品质起着关键作用。以上研究结果为进一步分析不同品种甘薯品质差异的机制奠定了基础。

关键词：菜用甘薯茎尖代谢产物代谢途径

Highly efficient 1D p-Te/2D n-Bi_(2)Te_(3) heterojunction self-driven broadband photodetector

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Nano Research 2024年第3期17卷 1864-1874页

作者： chenchen Zhao Dongbo Wang Jiamu Cao Zhi Zeng Bingke Zhang Jingwen Pan Donghao Liu Sihang Liu Shujie Jiao tianyuan chen Gang Liu Xuan Fang Liancheng Zhao Jinzhong Wang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Astronautics Harbin Institute of TechnologyHarbin 150001China Center for High Pressure Science and Technology Advanced Research Shanghai 201203China State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and TechnologyChangchun 130022China

Broadband photodetectors with self-driven functions have attracted intensive scientific interest due to their low energy consumption and high optical ***,high-performance broadband self-driven photodetectors are still a significant challenge due to the complex fabrication processes,environmental toxicity,high production costs of traditional 3D semiconductor materials and sharply raised contact resistance,severe interfacial recombination of 2D materials and 2D/3D mixed dimension ***,1D p-Te/2D n-Bi_(2)Te_(3) heterojunctions are constructed by the simple and low-cost hydrothermal method.1D p-Te/2D n-Bi_(2)Te_(3) devices are applied in photoelectrochemical(PEC)photodetectors,with their high performance attributed to the good interfacial contacts reducing interface *** device demonstrated a broad wavelength range(365–850 nm)with an Iph/Idark as high as *** R_(i),D^(*),and external quantum efficiency(EQE)values of the device were as high as 12.07 mA/W,5.87×10^(10) Jones,and 41.05%,respectively,which were significantly better than the performance of the prepared Bi_(2)Te_(3) and Te devices.A comparison of the freshly fabricated device and the device after 30 days showed that 1D p-Te/2D n-Bi_(2)Te_(3) had excellent stability with only 18.08%decay of *** is anticipated that this work will provide new emerging material for future design and preparation of a high-performance self-driven broadband photodetector.

关键词： topological insulating states interfacial recombination self-driven 1D p-Te/2D n-Bi_(2)Te_(3) photodetector

Treadmill exercise in combination with acousto-optic and olfactory stimulation improves cognitive function in APP/PS1 mice through the brain-derived neurotrophic factor-and Cygb-associated signaling pathways

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Neural Regeneration Research 2025年第9期20卷 2706-2726页

作者： Biao Xiao Chaoyang Chu Zhicheng Lin tianyuan Fang Yuyu Zhou Chuxia Zhang Jianghui Shan Shiyu chen Liping Li Department of Physiology and Pharmacology Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Ningbo Key Laboratory of Behavioral Neuroscience Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Key Laboratory of Addiction Research of Zhejiang Province NingboZhejiang ProvinceChina

A reduction in adult neurogenesis is associated with behavioral abnormalities in patients with Alzheimer's ***,enhancing adult neurogenesis represents a promising therapeutic approach for mitigating disease symptoms and ***,nonpharmacological interventions aimed at inducing adult neurogenesis are currently *** individual non-pharmacological interventions,such as aerobic exercise,acousto-optic stimulation,and olfactory stimulation,have shown limited capacity to improve neurogenesis and cognitive function in patients with Alzheimer's disease,the therapeutic effect of a strategy that combines these interventions has not been fully *** this study,we observed an age-dependent decrease in adult neurogenesis and a concurrent increase in amyloid-beta accumulation in the hippocampus of amyloid precursor protein/presenilin 1 mice aged 2-8 *** deposition became evident at 4 months,while neurogenesis declined by 6 months,further deteriorating as the disease ***,following a 4-week multifactor stimulation protocol,which encompassed treadmill running(46 min/d,10 m/min,6 days per week),40 Hz acousto-optic stimulation(1 hour/day,6 days/week),and olfactory stimulation(1 hour/day,6 days/week),we found a significant increase in the number of newborn cells(5'-bromo-2'-deoxyuridine-positive cells),immature neurons(doublecortin-positive cells),newborn immature neurons(5'-bromo-2'-deoxyuridine-positive/doublecortin-positive cells),and newborn astrocytes(5'-bromo-2'-deoxyuridine-positive/glial fibrillary acidic protein-positive cells).Additionally,the amyloid-beta load in the hippocampus *** findings suggest that multifactor stimulation can enhance adult hippocampal neurogenesis and mitigate amyloid-beta neuropathology in amyloid precursor protein/presenilin 1 ***,cognitive abilities were improved,and depressive symptoms were alleviated in amyloid precursor protein/presenilin 1 mice

关键词： acousto-optic stimulation adult neurogenesis Alzheimer's disease amyloid precursor protein/presenilin 1 mice amyloid-beta deposition brain cell apoptosis cognitive impairment depression-like behavior involuntary treadmill exercise olfactory stimulation serum metabolites

Salsolinol as an RNA m~6A methylation inducer mediates dopaminergic neuronal death by regulating YAP1 and autophagy

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Neural Regeneration Research 2025年第3期20卷 887-899页

作者： Jianan Wang Yuanyuan Ran Zihan Li tianyuan Zhao Fangfang Zhang Juan Wang Zongjian Liu Xuechai chen Beijing International Science and Technology Cooperation Base for Antiviral Drugs College of Chemistry and LifeBeijing University of TechnologyBeijingChina Department of Rehabilitation Beijing Rehabilitation HospitalCapital Medical UniversityBeijingChina

Salsolinol(1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline,Sal)is a catechol isoquinoline that causes neurotoxicity and shares structural similarity with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine,an environmental toxin that causes Parkinson's ***,the mechanism by which Sal mediates dopaminergic neuronal death remains *** this study,we found that Sal significantly enhanced the global level of N~6-methyladenosine(m~6A)RNA methylation in PC12 cells,mainly by inducing the downregulation of the expression of m~6A demethylases fat mass and obesity-associated protein(FTO)and alk B homolog 5(ALKBH5).RNA sequencing analysis showed that Sal downregulated the Hippo signaling *** m~6A reader YTH domain-containing family protein 2(YTHDF2)promoted the degradation of m~6A-containing Yes-associated protein 1(YAP1)mRNA,which is a downstream key effector in the Hippo signaling ***,downregulation of YAP1 promoted autophagy,indicating that the mutual regulation between YAP1 and autophagy can lead to *** findings reveal the role of Sal on m~6A RNA methylation and suggest that Sal may act as an RNA methylation inducer mediating dopaminergic neuronal death through YAP1 and *** results provide greater insights into the neurotoxic effects of catechol isoquinolines compared with other studies and may be a reference for assessing the involvement of RNA methylation in the pathogenesis of Parkinson's disease.

关键词： ALKBH5 autophagy FTO Hippo pathway m~6A Parkinson's disease RNA methylation salsolinol YAP1 YTHDF2