期刊文献+
共找到1,315篇文章
< 1 2 66 >
每页显示 20 50 100
Prehabilitation during neoadjuvant chemotherapy results in an enhanced immune response in esophageal adenocarcinoma tumors:A randomized controlled trial
1
作者 Charles J.Rayner David B.Bartlett +11 位作者 Sophie K.Allen Tyler Wooldridge Tadd Seymour Sunny Sunshine Julie Hunt David King Izhar Bagwan Javed Sultan Shaun R.Preston Adam E.Frampton Nicola E.Annels Nima Abbassi-Ghadi 《Journal of Sport and Health Science》 2025年第6期42-54,167,共14页
Background For patients with locally advanced esophagogastric cancer,the standard of care in the UK is neoadjuvant chemotherapy(NAC)followed by surgery.Prehabilitation exercise training can improve physiological funct... Background For patients with locally advanced esophagogastric cancer,the standard of care in the UK is neoadjuvant chemotherapy(NAC)followed by surgery.Prehabilitation exercise training can improve physiological function and fitness.If such improvements translate to increased immune infiltration of tumors,exercise could be prescribed as an immune adjuvant during NAC and potentially improve clinical outcomes.As such,we aimed to determine whether prehabilitation increased tumor infiltrating lymphocytes(TILs).Methods We assessed 22 patients with locally advanced esophageal cancer on a randomized control trial comparing 16 weeks of low-to-moderate intensity twice weekly supervised and thrice weekly home-based exercise(Prehab:n=11)to no prehabilitation(Control:n=11).Our primary outcome was to compare tumor-immune responses between Controls and Prehab.We compared formalin-fixed paraffin-embedded tumors by high-resolution multispectral immunohistochemistry(mIHC)and NanoString spatial transcriptomics.Secondarily,we determined relationships between changes in fitness to the exercise training and tumor-immune measures.Specifically,we assessed percentage changes in peak cardiorespiratory fitness as assessed by peak oxygen uptake(VO_(2peak))before NAC(Baseline)and after 8 weeks of NAC(Post-NAC),and changes between Baseline and following 8 weeks of NAC recovery before surgery(Pre-surgery)and correlated changes in fitness with tumor-immune responses.Finally,as an exploratory aim,we assessed clinical outcomes between groups,including survival,therapy tolerance,and tumor regrading.Results We observed that Prehab had significantly more CD8+lymphocytes in their tumors(mean difference(diff.)=1.79,95%confidence interval(95%CI):0.76‒2.82,p<0.001)and their stroma(mean diff.=1.59,95%CI:0.66‒2.52,p<0.001)than the Controls.When normalized to total numbers of TILs,Prehab had higher levels of CD56+natural killer(NK)cells(median diff.=0.87,95%CI:0.25‒2.18),p=0.0274),consisting primarily of CD56^(dim)NK cells(median diff.=0.48,95%CI:0.03‒2.53),p=0.0464).Evaluation of the presence and localization of tumor-associated tertiary lymphoid structures(TLS)in the esophageal tumors revealed that most TLS were in the peritumoral regions.Prehab had a higher TLS cell density(cells/mm^(2);median diff.=18,959,95%CI:13,518‒22,635),p<0.001)and more clearly defined germinal centers indicative of mature TLS visually.We observed that Prehab maintained their VO_(2peak)during NAC while the Controls’VO_(2peak)reduced by 9.0%±10.2%(mean±SD)(Post-NAC:p=0.018).Pre-surgery,Prehab VO_(2peak)was a clinically meaningful 3.27±1.31 mL/kg/min higher than Controls(p=0.022).Between Baseline and Post-NAC,where the Prehab maintained VO_(2peak)better than Controls,there were significant positive associations with percentage changes in VO_(2peak)and the frequencies of CD8+TILs(r=0.531,p=0.016),programmed death-ligand 1+(PDL1+)cells(r=0.566,p=0.009),and granzyme B+(GrzB+)TILs(r=0.582,p=0.007).Similar relationships were observed for changes in VO_(2peak)from Baseline to Pre-Surgery only in the Prehab group.We observed no differences between groups regarding clinical outcomes such as survival,therapy tolerance,or tumor regrading.Conclusion We show that exercise training during NAC,which promotes higher levels of cardiorespiratory fitness than no exercise,is associated with increased frequencies of TILs and maturity of TLS.These data suggest that exercise during NAC enhances the immune system.Future studies are warranted to understand the clinical consequences of this. 展开更多
关键词 Esophageal cancer surgery Prehabilitation exercise Exercise oncology Tumor infiltrating lymphocytes Tertiary lymphoid structures
暂未订购
A State-of-the-Art Review on the Revolution of Structure and Control of Vehicle Chassis System:from Tradition to Distributed Chassis System
2
作者 Ning Zhang Zihong Li +4 位作者 Cheng Wang Jinxiang Wang Weichao Zhuang Wenpeng Wei Guodong Yin 《Chinese Journal of Mechanical Engineering》 2025年第5期1-22,共22页
With the advent of in-wheel motors and corner modules,the structure of vehicle chassis subsystems has shifted from traditionally centralized to distributed.This review focuses on the distributed chassis system(DCS)equ... With the advent of in-wheel motors and corner modules,the structure of vehicle chassis subsystems has shifted from traditionally centralized to distributed.This review focuses on the distributed chassis system(DCS)equipped with corner modules.It first provides a comprehensive summary and description of the revolution of the structure and control methods of vehicle chassis systems(including driving,braking,suspension,and steering systems).Given that DCS integrates various chassis subsystems,this review moves beyond individual subsystem analysis and delves into the coordination of these subsystems at the vehicle level.It provides a detailed summary of the methods and architectures used for integrated coordination and control,ensuring that multiple subsystems can function seamlessly as an integrated whole.Finally,this review summarizes the latest distributed control architecture for DCS.It also examines current control theories in the fields of control and information technology for distributed systems,such as multi-agent systems and cyber-physical systems.Based on these two control approaches,a multi-domain cooperative control framework for DCS is proposed. 展开更多
关键词 Distributed chassis system Corner module Coordinated control Multi-domain cooperative control
在线阅读 下载PDF
Challenges and solutions in the treatment of spinal disorders in patients with skeletal dysplasia: A comprehensive review
3
作者 Athanasios I Tsirikos Akash Jain Kaustubh Ahuja 《World Journal of Methodology》 2025年第4期77-91,共15页
Skeletal dysplasia includes numerous genetic disorders marked by abnormal bone and cartilage growth,causing various spinal issues.The 2023 nosology identifies 771 distinct dysplasias involving 552 genes,with achondrop... Skeletal dysplasia includes numerous genetic disorders marked by abnormal bone and cartilage growth,causing various spinal issues.The 2023 nosology identifies 771 distinct dysplasias involving 552 genes,with achondroplasia being the most common and significantly affecting the spine.Other disorders include type II collagenopathies,sulphation defects,Filamin B disorders,and osteogenesis imperfecta,presenting with short stature,limb deformities,joint contractures,and spinal abnormalities.Spinal pathology often impacts physeal growth areas,leading to conditions like foramen magnum stenosis,atlantoaxial instability,spinal stenosis,kyphosis,and scoliosis.Non-orthopaedic symptoms can include hearing and vision loss,neurological issues like hydrocephalus,and cardiac abnormalities.The incidence is around 1 in 4000 to 5000 births,with achondroplasia at about 1 in 30000 live births.Advances in genetics and imaging enable prenatal diagnosis,though milder cases may go undetected.Effective management requires a multidisciplinary approach involving various specialists.This review emphasises early diagnosis,continuous monitoring,and comprehensive management of spinal pathology in skeletal dysplasia.In the current article,the authors present a thorough review on spinal conditions associated with skeletal dysplasia,their pathophysiology and management options. 展开更多
关键词 Skeletal dysplasia Spinal disorders ACHONDROPLASIA Spondyloepiphyseal dysplasia Mucopolysccharidosis Osteogenesis imperfecta
暂未订购
A Survey of Lower Limb Rehabilitation Systems and Algorithms Based on Functional Electrical Stimulation 被引量:1
4
作者 Mingxu Sun Xueyan Wu Qi Liu 《Computers, Materials & Continua》 SCIE EI 2020年第1期281-292,共12页
Functional electrical stimulation is a method of repairing a dysfunctional limb in a stroke patient by using low-intensity electrical stimulation.Currently,it is widely used in smart medical treatment for limb rehabil... Functional electrical stimulation is a method of repairing a dysfunctional limb in a stroke patient by using low-intensity electrical stimulation.Currently,it is widely used in smart medical treatment for limb rehabilitation in stroke patients.In this paper,the development of FES systems is sorted out and analyzed in a time order.Then,the progress of functional electrical stimulation in the field of rehabilitation is reviewed in details in two aspects,i.e.,system development and algorithm progress.In the system aspect,the development of the first FES control and stimulation system,the core of the lower limb-based neuroprosthesis system and the system based on brain-computer interface are introduced.The algorithm optimization for control strategy is introduced in the algorithm.Asynchronous stimulation to prolong the function time of the lower limbs and a method to improve the robustness of knee joint modeling using neural networks.Representative applications in each of these aspects have been investigated and analyzed. 展开更多
关键词 Functional electrical stimulation lower limb systems ALGORITHMS REHABILITATION
在线阅读 下载PDF
Boehmeria nivea var. strigosa (Urticaceae), a new variety from Southwest China 被引量:1
5
作者 ZHAO Ying Richard I.MILNE +2 位作者 LI Zhipeng Amos KIPKOECH WU Zengyuan 《广西植物》 CAS CSCD 北大核心 2024年第9期1617-1624,I0001-I0006,共14页
Boehmeria nivea var.strigosa Zeng Y.Wu&Y.Zhao,a new variety of B.nivea(Urticaceae)from Southwest China,is here described based on evidence from morphology and molecular phylogeny.This new variety is mainly charact... Boehmeria nivea var.strigosa Zeng Y.Wu&Y.Zhao,a new variety of B.nivea(Urticaceae)from Southwest China,is here described based on evidence from morphology and molecular phylogeny.This new variety is mainly characterized by its green abaxial leaf blade,partly connate stipules,and densely patent strigose hairs on stems and potioles.The phylogenetic analysis based on rbc L,nrDNA and rbc L+nrDNA datasets,revealed that all individuals of B.nivea var.strigosa formed a monophyletic group.The conservation status of B.nivea var.strigosa is assessed as“Near Threatened”(NT)according to IUCN evaluation criteria.The discovery of this new variety is not only crucial for the taxonomy of ramie,but also provides reference for the exploration and utilization of ramie. 展开更多
关键词 Boehmeria nivea MORPHOLOGY molecular phylogeny new variety Southwest China YUNNAN
在线阅读 下载PDF
TMCA-Net: A Compact Convolution Network for Monitoring Upper Limb Rehabilitation
6
作者 Qi Liu Zihao Wu Xiaodong Liu 《Journal on Internet of Things》 2022年第3期169-181,共13页
This study proposed a lightweight but high-performance convolu-tion network for accurately classifying five upper limb movements of arm,involving forearm flexion and rotation,arm extension,lumbar touch and no reaction... This study proposed a lightweight but high-performance convolu-tion network for accurately classifying five upper limb movements of arm,involving forearm flexion and rotation,arm extension,lumbar touch and no reaction state,aiming to monitoring patient’s rehabilitation process and assist the therapist in elevating patient compliance with treatment.To achieve this goal,a lightweight convolution neural network TMCA-Net(Time Mul-tiscale Channel Attention Convolutional Neural Network)is designed,which combines attention mechanism,uses multi-branched convolution structure to automatically extract feature information at different scales from sensor data,and filters feature information based on attention mechanism.In particular,channel separation convolution is used to replace traditional convolution.This reduces the computational complexity of the model,decouples the convolution operation of the time dimension and the cross-channel feature interaction,which is helpful to the target optimization of feature extraction.TMCA-Net shows excellent performance in the upper limb rehabilitation ges-ture data,achieves 99.11%accuracy and 99.16%F1-score for the classification and recognition of five gestures.Compared with CNN and LSTM network,it achieves 65.62%and 89.98%accuracy in the same task.In addition,on the UCI smartphone public dataset,with the network parameters of one tenth of the current advanced model,the recognition accuracy rate of 95.21%has been achieved,which further proves the light weight and performance characteristics of the model.The clinical significance of this study is to accurately monitor patients’upper limb rehabilitation gesture by an affordable intelligent model as an auxiliary support for therapists’decision-making. 展开更多
关键词 Rehabilitation monitoring STROKE MEMS gesture recognition
在线阅读 下载PDF
Spreading and Wetting Behaviour of Trisiloxanes 被引量:14
7
作者 Jovana Radulovic Khellil Sefiane Martin E.R.Shanahan 《Journal of Bionic Engineering》 SCIE EI CSCD 2009年第4期341-349,共9页
Wetting and spreading processes which involve surfactant solutions are widely used in numerous industrial and practical applications nowadays.The performance of different non-ionic surfactants may vary significantly a... Wetting and spreading processes which involve surfactant solutions are widely used in numerous industrial and practical applications nowadays.The performance of different non-ionic surfactants may vary significantly and so far superspreader solutions show the most promising spreading ability.The addition of trisiloxane surfactants to water was proven to enhance wetting,even on hydrophobic surfaces,on which conventional surfactants seem to have little or no effect.Although these extraordinary surfactants have been extensively studied over recent years,complete understanding of their underlying mechanisms and a suitable mathematical model are still lacking.Here we present a possible explanation for the impressive performance of trisiloxane,which is compared to wetting enhancement of a conventional surfactant.Additionally,we will explain why the hydrophobicity of the surface is a crucial factor for the spreading phenomenon.Light will be also shed on the effect of the pH of the solution to which surfactants are added.Finally,we will investigate long-term effects of the water environment on trisiloxane wetting ability and discuss if ageing may significantly affect their performance. 展开更多
关键词 HYDROPHOBICITY superspreading surfactants WETTING
在线阅读 下载PDF
Investigation of creep behaviours of gypsum specimens with flaws under different uniaxial loads 被引量:2
8
作者 Tina Marolt Cebasek Thomas Frühwirt 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2018年第1期151-163,共13页
The aim of this study is to identify the influence of the dip angle of a pre-existing macrocrack on the lifetime and ultimate deformation of rock-like material. Prediction of lifetime has been studied for three groups... The aim of this study is to identify the influence of the dip angle of a pre-existing macrocrack on the lifetime and ultimate deformation of rock-like material. Prediction of lifetime has been studied for three groups of specimens under axial static compressive load levels. The specimens were investigated from 65% to 85% of UCS(uniaxial compressive strength) at an interval of 10% of UCS for the groups of specimens with a single modelled open flaw with a dip angle to the loading direction of 30°(first group), at an interval of 5% of UCS increment for the groups of specimens with single(second group), and double sequential open flaws with a dip angle to the loading direction of 60°(third group). This study shows that crack propagation in specimens with a single flaw follows the same sequences. At first, wing cracks appear, and then shear crack develops from the existing wing cracks. Shear cracking is responsible for specimen failure in all three groups. A slip is expected in specimens from the third group which connects two individual modelled open flaws. The moment of the slip is noticed as a characteristic rise in the axial deformation at a constant load level. It is also observed that axial deformation versus time follows the same pattern, irrespective of local geometry. Specimens from the first group exhibit higher axial deformation under different load levels in comparison with the specimens from the second and third groups. 展开更多
关键词 Crack propagation Rock-like material Lifetime prediction Static compressive load Macrocrack Wing crack
在线阅读 下载PDF
Carbonatites and Alkaline Igneous Rocks in Post-Collisional Settings:Storehouses of Rare Earth Elements 被引量:5
9
作者 Kathryn M.Goodenough Eimear A.Deady +4 位作者 Charles D.Beard Sam Broom-Fendley Holly ALElliott Frederick van den Berg HüseyinÖztürk 《Journal of Earth Science》 SCIE CAS CSCD 2021年第6期1332-1358,共27页
The rare earth elements(REE)are critical raw materials for much of modern technology,particularly renewable energy infrastructure and electric vehicles that are vital for the energy transition.Many of the world's ... The rare earth elements(REE)are critical raw materials for much of modern technology,particularly renewable energy infrastructure and electric vehicles that are vital for the energy transition.Many of the world's largest REE deposits occur in alkaline rocks and carbonatites,which are found in intracontinental,rift-related settings,and also in syn-to post-collisional settings.Post-collisional settings host significant REE deposits,such as those of the Mianning-Dechang belt in China.This paper reviews REE mineralization in syn-to post-collisional alkaline-carbonatite complexes worldwide,in order to demonstrate some of the key physical and chemical features of these deposits.We use three examples,in Scotland,Namibia,and Turkey,to illustrate the structure of these systems.We review published geochemical data and use these to build up a broad model for the REE mineral system in post-collisional alkaline-carbonatite complexes.It is evident that immiscibility of carbonate-rich magmas and fluids plays an important part in generating mineralization in these settings,with REE,Ba and F partitioning into the carbonate-rich phase.The most significant REE mineralization in post-collisional alkaline-carbonatite complexes occurs in shallow-level,carbothermal or carbonatite intrusions,but deeper carbonatite bodies and associated alteration zones may also have REE enrichment. 展开更多
关键词 POST-COLLISIONAL ALKALINE CARBONATITE rare earth elements TECTONICS carbon cycle
原文传递
Analysis of the Efficiency-Energy with Regression and Classification in Household Using K-NN 被引量:2
10
作者 Qi Liu Zhiyun Yang +1 位作者 Xiaodong Liu Scholas Mbonihankuye 《Journal of New Media》 2019年第2期101-113,共13页
This paper aims to study energy consumption in a house. Home energy managementsystem (HEMS) has become very important, because energy consumption of aresidential sector accounts for a significant amount of total energ... This paper aims to study energy consumption in a house. Home energy managementsystem (HEMS) has become very important, because energy consumption of aresidential sector accounts for a significant amount of total energy consumption.However, a conventional HEMS has some architectural limitations among dimensionalvariables reusability and interoperability. Furthermore, the cost of implementation inHEMS is very expensive, which leads to the disturbance of the spread of a HEMS.Therefore, this study proposes an Internet of Things (IoT) based HEMS with lightweightphotovoltaic (PV) system over dynamic home area networks (DHANs), which enablesthe construction of a HEMS to be scalable reusable and interoperable. The study suggestsa technique for decreasing cost of energy that HEMS is using and various perspectives insystem. The method that proposed is K-NN (K-Nearest Neighbor) which helps us toanalyze the classification and regression datasets. This paper has the result from the datarelevant in October 2018 from some buildings of Nanjing University of InformationScience and Technology. 展开更多
关键词 Energy management system integrated wireless technology home energystorage home automation
在线阅读 下载PDF
Modelling of Eruptive Fire Occurrence and Behaviour 被引量:1
11
作者 Jacques-Henri Balbi Frangois Joseph Chatelon +3 位作者 Jean Louis Rossi Albert Simeoni Domingos Xavier Viegas Carlos Rossa 《Journal of Environmental Science and Engineering(B)》 2014年第3期115-132,共18页
Eruptive fires are one of the main causes of human losses in forest fire fighting. The sudden change in fire behaviour due to a fire eruption is extremely dangerous for fire-fighters because it is unpredictable. Very ... Eruptive fires are one of the main causes of human losses in forest fire fighting. The sudden change in fire behaviour due to a fire eruption is extremely dangerous for fire-fighters because it is unpredictable. Very little literature is available to support either modelling or occurrence prediction for this phenomenon. In this study, an unsteady physical model of fire spread is detailed, which describes the initiation and development of eruptive fires with an induced wind sub-model. The latter phenomenon is proposed as the mainspring of fire eruptions. Induced wind is proportional to the rate of spread and the rate of spread is in a non-linear relationship with induced wind. This feedback can converge or diverge depending on the conditions. The model allows both explaining why an eruption can occur and predicting explicitly its occurrence according to meteorological conditions, topographic parameters, fuel bed properties and fire front width. The model is tested by comparing its results to a set of experiments carried out at laboratory scale and during an outdoor wildfire, the Kornati accident. 展开更多
关键词 Eruptive fire unsteady solutions fire spread physical model.
在线阅读 下载PDF
An Experimental Study of the Thermal Behavior of the Courtyard Style Cave Dwelling
12
作者 刘艳峰 刘亚 刘加平 《Journal of Southwest Jiaotong University(English Edition)》 2002年第2期202-208,共7页
The effect of the courtyard on moderating the hush climate and improving the thermal environment of the courtyard style cave dwelling, and the interaction amongst the ambient, the courtyard and its surrounding cave ro... The effect of the courtyard on moderating the hush climate and improving the thermal environment of the courtyard style cave dwelling, and the interaction amongst the ambient, the courtyard and its surrounding cave rooms were investigated. A field measurement was carried out in such a typical dwelling in the winter. The results presented in this paper prove the ability of this dwelling to transform an extreme winter environment outside cave rooms into a better outdoor community space and will be helpful for modern architects to seek a low cost housing solution with concern for sustainable development. 展开更多
关键词 thermal environment measurement COURTYARD cave room
在线阅读 下载PDF
Effects of climate change-induced temperature rise on crustacean aquaculture:A comprehensive review
13
作者 Viraj Vishakha Yeshwant Daunde Manoj Tukaram Kamble +6 位作者 Balasaheb Ramdas Chavan Gargi Kashmira Rajesh Palekar Sangharsh Himmat Tayade Aranya Ponpornpisit Kim D.Thompson Seema Vijay Medhe Nopadon Pirarat 《Aquaculture and Fisheries》 2026年第1期11-32,共22页
Global warming,as a key driver of climate change,is accelerating water temperature rise,with significant implications for aquatic ecosystems.Temperature,a critical abiotic factor,directly affects the physiology,growth... Global warming,as a key driver of climate change,is accelerating water temperature rise,with significant implications for aquatic ecosystems.Temperature,a critical abiotic factor,directly affects the physiology,growth,and survival of aquatic organisms.In the context of aquaculture-one of the fastest-growing food sectors-crustaceans hold high commercial value due to their production volume and global demand.However,their sensitivity to thermal fluctuations poses major challenge under climate change.This review examines the impact of elevated temperatures on growth performance,food intake,moulting,immune response,and survival of major farmed crustaceans,including shrimp,prawns,crabs,lobsters,and crayfish.Broader ecological consequences,such as disruptions in nutrient cycling and disease outbreaks,are also explored.Additionally,we evaluate mitigation strategies,including dietary modification,technological innovations,biotechnological approaches,and aquaculture insurance models.By integrating physiological,immunological,and ecological evidence,this review identifies key knowledge gaps and highlighting opportunities to improve climate resilience in crustacean aquaculture.Understanding these challenges is essential for sustaining productivity and promoting adaptive management in a warming world. 展开更多
关键词 Global warming Crustacean aquaculture Rising temperature Physiological impacts Immune response Climate change mitigation Aquaculture sustainability
原文传递
基于双侧肢体控制策略视角分析肢体间不对称对运动能力的影响
14
作者 金智勇 汪宇峰 +2 位作者 赵滨杰 熊敏全 严力 《中国组织工程研究》 北大核心 2026年第4期949-963,共15页
背景:肢体间不对称是人类生长发育过程中的一般现象,长期专项训练可使运动员肢体间不对称发生特异性适应。目的:回顾了体育运动中肢体间不对称的形成原因、表现形式及对运动能力的影响,并概述了相关评估方法及干预策略。方法:检索中国... 背景:肢体间不对称是人类生长发育过程中的一般现象,长期专项训练可使运动员肢体间不对称发生特异性适应。目的:回顾了体育运动中肢体间不对称的形成原因、表现形式及对运动能力的影响,并概述了相关评估方法及干预策略。方法:检索中国知网、万方、PubMed及Web of Science数据库建库至2024年9月间收录的文献,中文检索词为“不对称,对称,失衡,平衡,力量,爆发力,跳跃,跑,人体测量学,运动损伤,运动能力,运动表现”,英文检索词为“asymmetry,asymmetries,asymmetric,asymmetrical,imbalance,strength,power,force,jump,sprint,athletic performance,anthropometry,injury”。排除重复发表、内容不相关及会议文献后,最终纳入131篇文献进行分析。结果与结论:(1)肢体间不对称可受遗传、任务、训练、损伤、疲劳和肢体偏好等因素影响,主要表现为解剖结构、力量表现、专项任务不对称等形式;(2)肢体间不对称增大可导致双侧同相位对称类运动能力受损,但与双侧异相位对称类运动能力间关系尚不明确;(3)训练干预可有效改善肢体间不对称,且单侧训练效果优于双侧,训练方式和内容选择应符合专项需求;(4)为进一步厘清肢体间不对称与运动能力间的关系,建议未来研究秉承肢体间不对称的“任务特异性”理念,规范研究设计,选择敏感测试手段与指标,统一计算方式以提供更多的高质量证据,并分类制定不同专项肢体间不对称的预警阈值标准。 展开更多
关键词 双侧肢体 失衡 差异 力量 运动表现 爆发力 跳跃 神经肌肉 工程化组织构建
在线阅读 下载PDF
Data-driven modelling of energy demand response behaviour based on a large-scale residential trial 被引量:2
15
作者 Ioannis Antonopoulos Valentin Robu +1 位作者 Benoit Couraud David Flynn 《Energy and AI》 2021年第2期101-118,共18页
Recent years have seen an increasing interest in Demand Response(DR),as a means to satisfy the growing flexibility needs of modern power grids.This increased flexibility is required due to the growing proportion of in... Recent years have seen an increasing interest in Demand Response(DR),as a means to satisfy the growing flexibility needs of modern power grids.This increased flexibility is required due to the growing proportion of intermittent renewable energy generation into the energy mix,and increasing complexity in demand profiles from the electrification of transport networks.Currently,less than 2%of the global potential for demand-side flexibility is currently utilised,but a more widespread adoption of residential consumers as flexibility resources can lead to substantially higher utilisation of the demand-side flexibility potential.In order to achieve this target,acquiring a better understanding of how residential DR participants respond in DR events is essential–and recent advances in novel machine learning and statistical AI provide promising tools to address this challenge.This study provides an in-depth analysis of how residential customers have responded in incentive-based DR,utilising household-related data from a large-scale,real-world trial:the Smart Grid,Smart City(SGSC)project.Using a number of different machine learning approaches,we model the relationship between a household’s response and household-related features.Moreover,we examine the potential effects of households’features on the residential response behaviour,and highlight a number of key insights which raise questions about the reported level of consumers’engagement in DR schemes,and the motivation for different customers’response level.Finally,we explore the temporal structure of the response–and although we found no supporting evidence of DR responders learning over time for the available data from this trial,the proposed methodologies could be used for longer-term longitudinal DR studies.Our study concludes with a broader discussion of our findings and potential paths for future research in this emerging area. 展开更多
关键词 Artificial intelligence Machine learning Artificial neural networks Ensemble methods Demand response Residential response behaviour Power systems
在线阅读 下载PDF
英国基础教育测评数字化转向的经验与启示
16
作者 毛延生 王一航 邢艳茹 《教学与管理》 北大核心 2026年第3期83-87,共5页
在全球教育数字化转型背景下,数字技术深度融入基础教育阶段教育测量与评价对于探索测量与评价的机制、手段与策略改革具有重要意义。英国基础教育测量与评价的数字化转型过程中呈现出在教育政策维度,数据隐私保护和教育发展公平尚未得... 在全球教育数字化转型背景下,数字技术深度融入基础教育阶段教育测量与评价对于探索测量与评价的机制、手段与策略改革具有重要意义。英国基础教育测量与评价的数字化转型过程中呈现出在教育政策维度,数据隐私保护和教育发展公平尚未得到有效规范;在评价技术维度,教育科技产业发展的规范性和协同性、智能性和高阶性尚未得到充分的探索;在评价取向维度,突破功利主义的人机协同赋能模式尚未得到充分开发等挑战。有鉴于此,基于我国教育数字化改革背景提出完善相关政策法规,保障基础教育测量与评价发展的规范性、安全性与公平性;提升基础教育阶段教学反馈效度,推动《课程方案》相关核心素养落实;基于生成式人工智能的多元优势,助推基础教育测量与评价手段的转型升级等建议。 展开更多
关键词 基础教育 数字化 测量与评价 英国
在线阅读 下载PDF
诗意写实·空间隐喻·人文哲思——论21世纪“藏地新浪潮”的美学突围
17
作者 张语涵 林萌 《安阳工学院学报》 2026年第1期105-109,共5页
对21世纪“藏地新浪潮”电影的探讨,首先从叙事美学视角,探析其创作模式上的创新以及民族影像本土化的呈现;其次,以空间美学视角,梳理藏族电影的地缘空间、家庭空间、心灵空间3个方面的独特地域书写;最后,从影片主题立意上剖析电影创作... 对21世纪“藏地新浪潮”电影的探讨,首先从叙事美学视角,探析其创作模式上的创新以及民族影像本土化的呈现;其次,以空间美学视角,梳理藏族电影的地缘空间、家庭空间、心灵空间3个方面的独特地域书写;最后,从影片主题立意上剖析电影创作者的独具匠心。面对现代文明的冲击与文化焦虑,“藏地新浪潮”导演力图在创作中实现美学突围,这不仅是对本民族文化的传承反思,更是在全球化语境下对民族文化的自信和坚守。 展开更多
关键词 “藏地新浪潮” 叙事美学 空间美学 人文哲思
在线阅读 下载PDF
说服老板把EHS进行下去
18
作者 钱进 《现代职业安全》 2012年第4期76-76,共1页
我现在在一家美国化工企业工作。在我到这之前,这家公司有两家工厂发生过大的火灾,而这两家工厂都是由一个美国人管理的。那么怎么在这个企业把安全文化推广下去,怎么说服老板把EHS进行下去。我们主要从几个方面来着手。
关键词 EHS 老板 化工企业 安全文化 美国人 工厂
原文传递
Extracellular vesicles derived from human amniotic fluid stem cells improve bladder dysfunction in rat model of diabetic atherosclerosis
19
作者 Ching-Chung Liang Yi-Hao Lin +3 位作者 Chu-Ya Liang Aileen Ro Yung-Hsin Huang Steven W Shaw 《World Journal of Stem Cells》 2026年第1期84-96,共13页
BACKGROUND The incidence of diabetic atherosclerosis(DMA)is increasing worldwide,but its pathogenesis remains incompletely understood.In addition to cardiovascular complications,bladder dysfunction is one of the commo... BACKGROUND The incidence of diabetic atherosclerosis(DMA)is increasing worldwide,but its pathogenesis remains incompletely understood.In addition to cardiovascular complications,bladder dysfunction is one of the common comorbidities associated with DMA but is often refractory to current treatments.AIM To investigate the therapeutic effect of human amniotic fluid stem cell-derived extracellular vesicles(hAFSC-EVs)on the recovery of bladder dysfunction in DMA rats.METHODS Eighty rats were divided into normal control,streptozotocin-induced diabetic rats,diabetic rats subjected to arterial balloon endothelial injury of common iliac artery(DMA),and DMA rats treated with hAFSC-EVs(DMA+hAFSC-EVs).At 4 weeks and 12 weeks after DMA induction,levels of blood glucose,total cholesterol,triglyceride,high-density lipoprotein cholesterol,low-density lipoprotein cholesterol,homeostasis model assessment(HOMA)-insulin resistance,and HOMA-βwere measured.Cystometry,common iliac artery wall thickness,and bladder tumor necrosis factor(TNF)-α,interleukin(IL)-6,transforming growth factor(TGF)-β1,Smad3,connective tissue growth factor(CTGF)and fibronectin were also evaluated.RESULTS Bladder weight and blood glucose,triglyceride,HOMA-insulin resistance,common iliac artery intima thickness,voided volume,intercontraction interval,bladder capacity,and mRNA expression of TNF-α,IL-6,TGF-β1,Smad3,CTGF and fibronectin were significantly increased at 4 weeks and 12 weeks after induction,while the HOMA-βlevel decreased at 4 weeks and 12 weeks,and the high-density lipoprotein cholesterol level decreased at 12 weeks.hAFSC-EVs treatment in DMA rats significantly reduced bladder weight and blood glucose,thickness of common iliac arterial intima,voided volume,intercontraction interval and bladder capacity at 4 weeks.The mRNA expression of TNF-α,TGF-β1,and CTGF in DMA rats treated with hAFSC-EVs were significantly decreased at 4 weeks,while the mRNA expressions of IL-6 and Smad3 were significantly decreased 12 weeks.CONCLUSION hAFSC-EVs treatment can help restore DMA-induced bladder dysfunction,which is associated with lowered blood glucose levels,reduced arterial wall thickness,and decreased TNF-α,IL-6,TGF-β1,Smad3,and CTGF expression. 展开更多
关键词 ATHEROSCLEROSIS BLADDER DIABETES EXOSOME Extracellular vesicles Stem cell
暂未订购
Cultural drivers and health-seeking behaviours that impact on the transmission of pig-associated zoonoses in Lao People’s Democratic Republic
20
作者 Stephanie Burniston Anna L Okello +5 位作者 Boualam Khamlome Phouth Inthavong Jeffrey Gilbert Stuart D Blacksell John Allen Susan C Welburn 《Infectious Diseases of Poverty》 SCIE 2015年第1期71-82,共12页
Pig rearing is an important income source in the Lao People’s Democratic Republic(PDR),with many smallholder farmers using traditional free-range pig production systems.Despite the potentially significant health risk... Pig rearing is an important income source in the Lao People’s Democratic Republic(PDR),with many smallholder farmers using traditional free-range pig production systems.Despite the potentially significant health risks posed by pig production regarding pig-associated zoonoses,information on the sociocultural drivers of these zoonoses is significantly lacking.This review summarises the existing sociocultural knowledge on eight pig-associated zoonoses suspected to be endemic in Southeast Asia:brucellosis,Q fever(Coxiella burnetii),trichinellosis,hepatitis E virus,leptospirosis,Japanese encephalitis,Streptococcus suis and Taenia solium taeniasis-cysticercosis.It summarises current knowledge on these diseases grouped according to their clinical manifestations in humans to highlight the propensity for underreporting.A literature search was conducted across multiple databases for publications from 1990 to the present day related to the eight pig-associated zoonoses and the risk and impact connected with them,with Lao PDR as a case study.Many of these pig-associated zoonoses have similar presentations and are often diagnosed as clinical syndromes.Misdiagnosis and underreporting are,therefore,substantial and emphasise the need for more robust diagnostics and appropriate surveillance systems.While some reports exist in other countries in the region,information is significantly lacking in Lao PDR with existing information coming mainly from the capital,Vientiane.The disease burden imposed by these zoonoses is not only characterised by morbidity and mortality,but directly impacts on livelihoods through income reduction and production losses,and indirectly through treatment costs and lost work opportunities.Other factors crucial to understanding and controlling these diseases are the influence of ethnicity and culture on food-consumption practices,pig rearing and slaughter practices,hygiene and sanitation,health-seeking behaviours and,therefore,risk factors for disease transmission.Published information on the knowledge,attitudes and beliefs of people regarding pig zoonoses and their risk factors is also extremely limited in Lao PDR and the broader Southeast Asian region.The need for more transdisciplinary research,using a One Health approach,in order to understand the underlining social determinants of health and their impacts on health-seeking behaviours,disease transmission and,ultimately,disease reporting,cannot be more emphasized. 展开更多
关键词 Sociocultural drivers Pig-associated zoonoses Clinical syndromes Health seeking behaviours Brucellosis Q-fever TRICHINELLOSIS Hepatitis E Leptospirosis Japanese encephalitis Streptococcus suis Taeniasis-cysticercosis
原文传递
上一页 1 2 66 下一页 到第
使用帮助 返回顶部