检索结果-南通市图书馆

Palaeogeography of a shallow carbonate platform:The case of the Middle to Late Oxfordian in the Swiss Jura Mountains

引用

Journal of Palaeogeography 2015年第3期4卷 251-268页

作者： André Strasser Bernard Pittet wolfgang hug Department of Geosciences University of Fribourg Université Lyon 1 UMR CNRS LGLTPE 5276Campus DouaBatiment Géode69622 VilleurbanneFrance Paléontologie A16 Section d'archéologie et paléontologieOffice de la cultureH?tel des Halles2900 PorrentruySwitzerland

The Oxfordian （Late Jurassic） carbonate-dominated ptatform outcropping in the Swiss Jura Mountains offers a good biostratigraphic, sequence-stratigraphic, and cyclostratigraphic framework to reconstruct changes in facies distribution at a time-resolution of 100 ka. It thus allows interpreting the dynamic evolution of this platform in much more detail than conventional palaeogeographic maps permit. As an example, a Middle to Late Oxfordian time slice is presented, spanning an interval of about 1.6 Ma. The study is based on 12 sections logged at cm-scale. The interpreted depositional environments include marginal-marine emerged ;ands, fresh-water lakes, tidal fiats, shallow lagoons, ooid shoals, and coral reefs. Although limestones dominate, marly intervals and dolomites occur sporadically. Major facies shifts are related to m-scale sea-level changes linked to the orbital short eccentricity cycle （100 ka）. The 20-ka precession cycle caused minor facies changes but cannot always be resolved. Synsedimentary tectonics induced additional accommodation changes by creating shallow basins where days accumulated or highs on which shoals or islands formed. Autocyclic processes such as lateral migration of ooid and bioclastic shoals added to the sedimentary record. CEimate changes intervened to control terrestrial run-off and, consequently, siliciclastic and nutrient input. Coral reefs reacted to such input by becoming dominated by microbialites and eventually by being smothered. Concomitant occurrence of siliciclastics anddolomite in certain intervals further suggests that, at times, it was relatively arid in the study area but there was rainfall in more northern latitudes, eroding the Hercynian substrate. These examples from the Swiss Jura demonstrate the highly dynamic and （geologically speaking） rapid evolution of sedimentary systems, in which tectonically controlled basin morphology, orbitally induced climate and sea-level changes, currents, and the ecology of the carbon

关键词： Swiss Jura Oxfordian carbonate platform facies evotution sequence stratigraphy cyclostratigraphy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Personalized Federated Learning for Individual Consumer Load Forecasting

引用

CSEE Journal of Power and Energy Systems 2023年第1期9卷 326-330页

作者： Yi Wang Ning Gao Gabriela hug Department of Electrical and Electronic Engineering The University of Hong KongHong KongChinaare also with ETH ZurichZurichSwitzerland Power Systems Laboratory ETH Zurich8092 ZurichSwitzerland

Installation of smart meters enables electricity retailers or consumers to implement individual load forecasting for demand *** individual load forecasting model can be trained either on each consumer’s own smart meter data or the smart meter data of multiple *** former practice may suffer from overfitting if a complex model is trained because the dataset is limited;the latter practice cannot protect the privacy of individual *** paper tackles the dilemma by proposing a personalized federated approach for individual consumer load ***,a group of consumers first jointly train a federated forecasting model on the shared smart meter data pool,and then each consumer personalizes the federated forecasting model on their own *** case studies are conducted on an open dataset of 100 *** verify the proposed method can enhance forecasting accuracy by making full use of data from other consumers with privacy protection.

关键词： Federated learning load forecasting personalization privacy-preserving smart meter

来源：

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

Forest composition and red oak (Quercus sp.) response to elevation gradients across greentree reservoirs

引用

Forest Ecosystems 2023年第5期10卷 607-617页

作者： Cassandra hug Pradip Saud Keith McKnight Douglas C.Osborne College of Forestry Agriculturaland Natural ResourcesUniversity of Arkansas at MonticelloMonticelloAR71656USA USFWS/Lower Mississippi Valley Joint Venture TylerTX75707USA Five Oaks Ag Research and Education Center HumphreyAR72073USA

Elevation gradients within forested wetlands have long been recognized for their role in defining species composition through factors such as hydrology and soil *** reservoirs(GTRs)are leveeimpounded tracts of bottomland hardwood forest flooded throughout the winter months to provide habitat for overwintering *** flooding of GTRs alters the forest composition due to flood frequency,depth,and duration in combination with slight changes in *** evaluate the effect of elevation gradients,soil properties,and management techniques in the overstory species composition and red oak(Quercus spp.)species abundance,we inventoried 662 plots across 12 independent GTRs in eastern *** the lower elevations ranging from 50.98 to 54.99 m above sea level,the importance value index(IVI)was highest for nuttall oak(Quercus texana)and overcup oak(Quercus lyrata),whereas IVI shifted to cherrybark oak(Quercus pagoda)in the higher elevations ranging from 54.99 to 58.00 *** diversity did not differ by elevation gradient,soil property,or management technique within *** diversity,using non-metric multi-dimensional scaling(NMDS)analysis,indicated site-specific variability significantly correlated with the environmental predictors,including elevation(R^(2)=0.57),easting(R^(2)=0.47),soil texture(R^(2)=0.21),and pH(R^(2)=0.12).Red oak species-specific mixed-effects modeling of abundance response using Poisson distribution suggested an inverse correlation of nuttall oak and a direct correlation of cherrybark oak abundance with ***,willow oak(Quercus phellos)abundance was not significantly affected by elevation but was by silt loam soil texture and restoration management *** findings will aid management efforts to reduce the dominance of less desirable species that are prominent under specific environmental conditions and promote the dominance of more desirable *** GTR sustainability is increas

关键词： Bottomland hardwoods Diversity Forested wetland Overstory Red oak Soil Thinning and management

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Stiffness of individual quadriceps muscle assessed using ultrasound shear wave elastography during passive stretching

引用

Journal of Sport and Health Science 2018年第2期7卷 245-249页

作者： Jingfei Xu Francois hug Siu Ngor Fu Department of Rehabilitation Medicine West China Hospital Sichuan University Chengdu 610041 China Department of Rehabilitation Sciences The Hong Kong Polytechnic University Hong Kong China Institute for Disaster Management and Reconstruction Sichuan University Chengdu 610207 China The University of Queensland NHMRC Centre of Clinical Research Excellence in Spinal Pain Injury and Health School of Health and Rehabilitation Sciences Brisbane 4072 Australia Laboratory "'Movement Interactions Performance " (EA 4334) University of Nantes Nantes 44000 France

Background: Until recently it has not been possible to isolate the mechanical behavior of individual muscles during passive stretching. Muscle shear modulus(an index of muscle stiffness) measured using ultrasound shear wave elastography can be used to estimate changes in stiffness of an individual muscle. The aims of the present study were(1) to determine the shear modulus—knee angle relationship and the slack angle of the vastus medialis oblique(VMO), rectus femoris(RF), and vastus lateralis(VL) muscles;(2) to determine whether this differs between the ***: Nine male rowers took part in the study. The shear modulus of VMO, RF, and VL muscles was measured while the quadriceps was passively stretched at 3°/s. The relationship between the muscle shear modulus and knee angle was plotted as shear modulus—knee angle curve through which the slack angle of each muscle was ***: The shear modulus of RF was higher than that of VMO and VL when the muscles were stretched over 54°(all p 0.05). The slack angle was similar among the muscles: 41.3°± 10.6°, 44.3°± 9.1°, and 44.3°± 5.6° of knee flexion for VMO, RF, and VL, respectively(p = 0.626).Conclusion: This is the first study to experimentally determine the muscle mechanical behavior of individual heads of the quadriceps during passive stretching. Different pattern of passive tension was observed between mono-and bi-articular muscles. Further research is needed to determine whether changes in muscle stiffness are muscle-specific in pathological conditions or after interventions such as stretching protocols.

关键词： Muscle tension Optimal length Shear modulus Slack angle Stretch Ultrasonography Vastus lateralis Vastus medialis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Melt pool monitoring in laser beam melting with two-wavelength holographic imaging

引用

Light(Advanced Manufacturing) 2022年第1期3卷 154-165页

作者： Matthieu Piniard Beatrice Sorrente Gilles hug Pascal Picart DOTA ONERAUniversitéParis Saclay91123 PalaiseauFrance Laboratoire d’Étude des Microstructures ONERA-CNRSUMR 10429 Avenue de la Division Leclerc92320 ChâtillonFrance Laboratoire d’Acoustique de l’Universitédu Mans CNRS 6613Institut d’Acoustique-Graduate School(IAGS)Le Mans UniversitéAvenue Olivier Messiaen72085 Le MansFrance

Over the past two decades, laser beam melting has emerged as the leading metal additive manufacturing process for producing small- and medium-size structures. However, a key obstacle for the application of this technique in industry is the lack of reliability and qualification mainly because of melt pool instabilities during the laser-powder interaction, which degrade the quality of the manufactured components. In this paper, we propose multi- wavelength digital holography as a proof of concept for in situ real-time investigation of the melt pool morphology. A two-wavelength digital holographic setup was co-axially implemented in a laser beam melting facility. The solidified aluminum tracks and melt pools during the manufacturing of 316L were obtained with full- field one-shot acquisitions at short exposure times and various scanning velocities. The evaluation of the complex coherence factor of digital holograms allowed the quality assessment of the phase reconstruction. The motion blur was analyzed by scanning the dynamic melt pool.

关键词： Laser beam melting Optical diagnostic Digital holography Multi-wavelength holography

来源：

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

Explorations in the Tension Between Media Activism and Action-Oriented Media Pedagogy

引用

Journalism and Mass Communication 2012年第3期2卷 457-463页

作者： Theo hug University of Innsbruck Innsbruck Austria

In historically, culturally, and technically variable media constellations, various forms of media activism, media education, and learning design have been developed. As to media activism, there is a broad spectrum, including graffiti, radio activism, community media, visual activism, tactical media （Garcia ＆ Lovink, 1997）, and more recently, media interventions questioning the workings of biopower （Da Costa ＆ Philip, 2008）. On the other hand, debates on media competency and media literacy have been going on for a few decades. Although media have also been conceptualized as media of resistance or critique in informal contexts as well as in formal education, lively exchanges of concepts and ideas are comparatively seldom in respective traditions. The paper aims at exploring challenges for media education and interfaces between both fields.

关键词： media activism tactical media concepts of media pedagogy media competence media formation

来源：

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

Media Activism in Search of Truth： Questioning the Mission to Restore Sanity

引用

Journalism and Mass Communication 2012年第1期2卷 271-278页

作者： Claudia Schwarz Theo hug University of Innsbruck Austria

For a young, media savvy, radically globalized generation, television as a platform for news has lost momentum. Ironically, however, in a media landscape with a variety of news providers competing for audiences and trust, television news parodies like The Daily Show with Jon Stewart and The Colbert Report attract new audiences as they seem to fill a gap. They succeed not only in entertaining and informing （even educating） a previously ＂deactivated＂, relatively young target audience, but also in initiating activism by using old and new （social） media. How can it be that a comedy show succeeds in promoting reason and gets young people to stand up for more sanity in politics and culture？ In the sense that, in this case, critical （subversive） practice comes fxom within the mainstream, is television, as the platform that has been criticized for ＂dumbing down＂ audiences （cf. Postman 1985）, actually becoming the solution for commitment7 In this constellation, what is the role of self-determined （intrinsic） and acquired （extrinsic） practices in relation to mobilized practices and practices determined by other factors？ And how do they work differently in comparison to the subversive practices of tactical media and media activism that question the methods of biopower？ This paper examines several responses to the （more and less serious） calls for action of the two shows and discusses their delicate role as entertainers, watchdogs, and activists for reason, sanity, and what is left of truth in the media. Furthermore, implications for critical media studies are considered by questioning the claims of education towards truth （of. Mitterer, 1983）.

关键词： media activism news parody biopolitcs

来源：

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

NEW SOLID BASE DERIVED FROM AIPO4-5 SUPPORTED KF

引用

Chinese Chemical Letters 1996年第7期7卷 671-674页

作者： Jian Hua ZHU Qin hug XU Hideshi HATTORI(Chemistry Department, Nanjing University.Nanjing 210093,China.)(Centre for Advanced Research of Energy Technology, Hokkaido University,Sapporo 060.Japan) Chemistry Department Nanjing University Nanjing 210093 China Ctr. for Adv. Res. of Ener. Technol. Hokkaido University Sapporo 060 Japan

Dispersion of KF on AlPO4-5 molecular sieve created basic sites and caused 1654 cm- band of bidentate carbonate in CO2 *** pre-treated above 823K. 5%KF/AlPO4-5exhibited basic catalytic activity in the isomerization of... 详细信息

关键词： NEW SOLID BASE DERIVED FROM AIPO4-5 SUPPORTED KF

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

正性肌力药和血管扩张药的临床选用现状

引用

国际麻醉学与复苏杂志 1992年第3期26卷 138-141页

作者： hug C C 于金贵

影响心排血量的易变因素有五种即:心率和心律、心肌收缩力、心室前负荷和后负荷,根据对上述因素的不同作用可选择出特异性增强心脏功能的药物。为在临床上有效地应用正性肌力药和血管扩张药,需了解药物的量-效关系、用药途径及用药速率... 详细信息

影响心排血量的易变因素有五种即:心率和心律、心肌收缩力、心室前负荷和后负荷,根据对上述因素的不同作用可选择出特异性增强心脏功能的药物。为在临床上有效地应用正性肌力药和血管扩张药,需了解药物的量-效关系、用药途径及用药速率,还应考虑药物的相互作用及病人本身的病理生理状况。只有对所选择药物的心脏及血流动力效应有一系统认识,才能对严重心脏病人安全而有效地使用正性肌力药和血管扩张药。

关键词：正性肌力药血管扩张药心排血量病人安全心肌收缩力量-效关系后负荷血管收缩药用药途径动力效应

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

有关麻醉剂的新见解

引用

国外医学（外科学分册） 1989年第4期16卷 223-224页

作者： Carl C hug Jr. 丁强

近年来社会、经济等多种因素促进着麻醉实践的变革,最引人嘱目的有:(1)非住院病人的外科手术中心发展很快,这就要求麻醉配合紧凑,苏醒迅速。(2)高龄危重及生理贮备差的手术病人数量剧增,麻醉手术过程中允许机体功能变动的范围相对较窄。... 详细信息

近年来社会、经济等多种因素促进着麻醉实践的变革,最引人嘱目的有:(1)非住院病人的外科手术中心发展很快,这就要求麻醉配合紧凑,苏醒迅速。(2)高龄危重及生理贮备差的手术病人数量剧增,麻醉手术过程中允许机体功能变动的范围相对较窄。(3)科技的发展也给选择麻醉剂和操作技术造成某些限制。为了满足这些特殊要求,新型麻醉药的研制常着眼于起效迅速苏醒快,对机体功能影响小,不良反应少,又可同时伍用其他药物。当前麻醉的目的是保证手术时无痛、神志消失、肌肉松弛,无焦虑紧张。但是,由于人群心血管疾病发生率的剧增,麻醉手术时保证病人血流动力稳定,心肌不过分抑制就很重要。因而某些抑制心肌功能的麻醉药用量就受到一定限制。

关键词：麻醉剂麻醉药平衡麻醉

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：