检索结果-南通市图书馆

China's Role in Global Climate Change Mitigation

在线全文

学校读者我要写书评

暂无评论

China & World Economy 2014年第5期22卷 2-18页

作者： ross Garnaut University of Melbourne Chinese Academy of Social Sciences

China contributed a majority of the growth in global greenhouse gas emissions in the first 11 years of this century The trajectory of emissions has changed radically since then, as China has irrplemented its Cancun 2010 commitment to reduce the 2005 emissions intensity of economic activity by 40-45percent by 2020. The change in trajectory has been reinforced by China＇s new model of economic growth, with its greater emphasis on equity in income distribution, consumption and services. The large-scale deployment of low emissions technology in China is lowering the cost of transition to a low carbon economy all over the world. China ＇ s new emissions trajectory improves the opportunity For the international community to meet the 2℃ climate target. It is essential that the changes in China are brought to account in shaping global mitigation ambition.

关键词： climate change policy energy low carbon economy renewable energy

The Visual Analytics and Data Exploration Research Lab at Arizona State University

在线全文

学校读者我要写书评

暂无评论

Visual Informatics 2021年第1期5卷 14-22页

作者： ross Maciejewski Yuxin Ma Jonas Lukasczyk Arizona State University United States of America

This article describes the research agenda for the Visual Analytics and Data Exploration Research(VADER)Lab at Arizona State *** the past decade,the VADER Lab has focused on creating novel algorithms,tools and visualizations for spatiotemporal *** article will highlight past success in spatiotemporal analysis,explainable AI,graph mining,and mathematical ***,at first,these topics seem largely disjoint,we will describe how the underpinnings of spatiotemporal analysis has informed the various research directions in the VADER Lab,and how this research agenda has served to form a network of strong international ***,we will outline a vision for the Lab’s future research.

关键词： Visualization Spatiotemporal Explainable AI Topology

Examining the intrinsic foot muscles'capacity to modulate plantar flexor gearing and ankle joint contributions to propulsion in vertical jumping

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

Journal of Sport and Health Science 2023年第5期12卷 639-647,F0003页

作者： ross Smith Glen Lichtwark Dominic Farris Luke Kelly School of Human Movement and Nutrition Sciences The University of QueenslandBrisbaneQLD 4072Australia Sport and Health Sciences College of Life and Environmental SciencesThe University of ExeterExeterEX12LUUnited Kingdom

Background:During human locomotion,a sufficiently stiff foot allows the ankle plantar flexors to generate large propulsive *** foot stiffness(e.g.,via a carbon plate)increases the ankle’s external moment arm in relation to the internal moment arm(i.e.,increasing gear ratio),reduces plantar flexor muscles’shortening velocity,and enhances muscle force *** contrast,when activation of the foot’s intrinsic muscles is impaired,there is a reduction in foot and ankle work and metatarsophalangeal joint *** speculated that the reduced capacity to actively control metatarsophalangeal joint stiffness may impair the gearing function of the foot at the ***:We used a tibial nerve block to examine the direct effects of the intrinsic foot muscles on ankle joint kinetics,in vivo medial gastrocnemius’musculotendinous dynamics,and ankle gear ratio on 14 participants during maximal vertical ***:Under the nerve block,the internal ankle plantar flexion moment decreased(p=0.004)alongside a reduction in external moment arm length(p=0.021)and ankle joint gear ratio(p=0.049)when compared to the non-blocked *** medial gastrocnemius muscle-tendon unit and fascicle velocity were not different between conditions,the Achilles tendon was shorter during propulsion in the nerve block condition(p<0.001).Conclusion:In addition to their known role of regulating the energetic function of the foot,our data indicate that the intrinsic foot muscles also act to optimize ankle joint torque production and leverage during the propulsion phase of vertical jumping.

关键词： Ankle biomechanics Ankle gearing Foot biomechanicsTagedEnd

Hexavalent Chrome: Threshold Concept for Carcinogenicity

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 1990年第1期3卷 20-34页

作者： ross E.JONES Texas Instruments MS 8308 P.O. Box 655303 Dallas Texas 75265

Certain hexavalent chromium (Cr^(6+)) compounds when administered via inhalation at high doses have the potential to induce lung tumors in humans and experimental animals. Trivalent chromium (Cr^(3+)) is an essential human and animal nutrient at levels of 50 to 200 μg/day. Recent data have shown that the human body is able to reduce Cr^(6+) to Cr^(3+). This reduction occurs in bodily fluids such as gastric juice, epithelial lining fluid *** respiratory tract, blood, and other fluids. Secondary reduction occurs at the cellular level by the cytosol, mitochondria, and microsomes. Thus, at low levels of exposure hexavalent chromium ions are reduced befor the 6+ ions can interact with DNA unless the dose is sufficient to overwhelm the body's reduction capacity. This paper summarizes the available data concerning the reducing ability of the body and formulates the steps in the mechanism of cancer induction. These steps include: (1) only certain Cr^(6+) compounds have the capacity to interact with cellular components; (2) Cr^(6+) is reduced by body fluids and excess Cr^(6+) enters the cell (Cr^(3+) is poorly absorbed across membranes); (3) cellular organelles and the cytoplasm reduce Cr^(6+) to Cr^(3+); (4) excess Cr^(6+) can enter the nucleus; (5) Cr^(6+) reduction through 5+ and 4+ to 3+ has a potential to interact with the DNA molecule; and (6) if unrepaired, this DNA damage can lead to cancer induction. On the basis of current evidence Cr^(6+) has a threshold for carcinogenic potential in humans that is greater than the current TLV. 1990 Academic Press. Inc.

关键词： DNA Threshold Concept for Carcinogenicity Hexavalent Chrome

Exotic parrots breeding in urban tree cavities: nesting requirements, geographic distribution, and potential impacts on cavity nesting birds in southeast Florida

在线全文

学校读者我要写书评

暂无评论

Avian Research 2019年第4期10卷 459-468页

作者： Joshua M.Diamond Michael S.ross Florida International University Earth & Environment

Background:Exotic parrots have established breeding populations in southeast Florida,including several species that nest in tree *** aimed to determine the species identity,nest site requirements,relative nest abundance,geographic distribution,and interactions of parrots with native cavity-nesting bird ***:We searched Miami-Dade County,Florida,and nearby areas for natural cavities and holes excavated by woodpeckers,recording attributes of potential nest *** inspected all cavities with an elevated video inspection system to determine occupancy by parrots or other *** mapped nearly 4000 citizen science observations of parrots in our study area corresponding to our study period,and used these to construct range maps,comparing them to our nesting ***:Not all parrots reported or observed in our study area were actively *** parrots were observed at tree cavities,which previous studies have suggested is evidence of reproduction,but our inspections with an elevated video inspection system suggest they never initiated nesting *** parrot species did successfully nest in tree cavities,Red-masked Parakeets(Psittacara erythrogenys)and Orange-winged Parrots(Amazona amazonica)being the most common(n=7 and 6 nests,respectively).These two parrots had similar nesting requirements,but Orange-winged Parrots use nests with larger entrance holes,which they often *** analysis of nests combined with citizen science data indicate that parrots are limited to developed *** most common parrots were less abundant cavity nesters than the native birds which persist in Miami’s urban areas,and far less abundant than the invasive European Starling(Sturnus vulgaris).Conclusions:Exotic parrots breeding elsewhere in the world have harmed native cavity-nesting birds through interference competition,but competitive interference in southeast Florida is minimized by the urban affinities of parrots in this ***

关键词： Amazona Cavity nest webs Invasive species Parakeets Psittacara Urban ecology

Seeing through a new lens: exploring the potential of city walking tour videos for urban analytics

在线全文

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2023年第1期16卷 2555-2573页

作者： Maximilian C.Hartmann ross S.Purves Department of Geography University of ZurichZurichSwitzerland

City Walking Tour Videos(CWTVs)are.a novel source of Volunteered Geographic Information providing street-level imagery through video sharing platforms such as *** demonstrate that these videos contain rich information for urban analytical applications,by conducting a mobility *** detect transport modes with a focus on active(pedestrians and cyclists)and motorised mobility(cars,motorcyclists and trucks).We chose the City of Paris as our area of interest given the rapid expansion of the bicycle network as a response to the Covid-19 pandemic and compiled a video corpus encompassing more than 66 hours of video *** the detection of street names in the video and placename containing timestamps we extracted and georeferenced 1169 locations at which we summarise the detected transport *** results show high potential of CWTVs for studying urban mobility *** detected significant shifts in the mobility mix before and during the pandemic as well as weather effects on the volumes of pedestrians and *** with the observed increase in data availability over the years we suggest that CWTVs have considerable potential for other applications in the field of urban analytics.

关键词： Street-level imagery city walking tour videos transport modes mobility object detection geolocation

Integrating a Market-Based Model in Trust-Based Service Systems

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

Tsinghua Science and Technology 2013年第6期18卷 554-567页

作者： Suronapee Phoomvuthisarn Yan Liu Liming Zhu ross Jeffery Faculty of Information Sciences and Technology Mahanakorn University of Technology Faculty of Engineering and Computer Science Concordia University National ICT Australia and the School of Computer Science and Engineering University of New South Wales

The reputation-based trust mechanism is a way to assess the trustworthiness of offered services, based on the feedback obtained from their users. In the absence of appropriate safeguards, service users can still manipulate this feedback. Auction mechanisms have already addressed the problem of manipulation by market- trading participants. When auction mechanisms are.applied to trust systems, their interaction with the trust systems and associated overhead need to be quantitatively evaluated. This paper proposes two distributed architectures based on centralized and hybrid computing for integrating an auction mechanism with the trust systems. The empirical evaluation demonstrates how the architectures help to discourage users from giving untruthful feedback and reduce the overhead costs of the auction mechanisms.

关键词： trust systems software.architecture economic mechanisms

Fit to fight——from military hygiene to wellbeing in the British Army

在线全文

学校读者我要写书评

暂无评论

Military Medical Research 2020年第4期7卷 482-488页

作者： Martin C.M.Bricknell Colonel David A.ross Health and Military Medicine Conflict and Health Research GroupSchool of Security StudiesKing’s College LondonStrand CampusLondon WC2R 2LSUK Parkes Professor of Preventive Medicine Robertson HouseCamberley GU154NAUK

This paper reviews the historical evolution of the language and organization surrounding the health of personnel in the British Army from‘hygiene’through to‘wellbeing’.It starts by considering the health of the army in the midnineteenth century and the emergence of military hygiene as a professional *** continues by looking at advances in military hygiene in the two world *** was replaced by the term‘health’in the 1950 s as the collective noun used by professionals working in this *** unity split when the professions of occupational medicine and public health established separate faculties and training ***,the health issues for the armed forces remain fundamentally *** forward,the term‘wellbeing’is helping to refresh the close relationships between executives,their medical advisers and those within the population of health professions charged with keeping the British Army *** core theme is the collaborations between civil society,executive leadership and medical services in maximizing the health of the military population from recruitment through to life as a veteran.

关键词： Public health Hygiene Occupational medicine

The transport of chemical components in homogeneous snowpacks on Urumqi Glacier No.1, eastern Tianshan Mountains, Central Asia

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2015年第5期7卷 612-622页

作者： YOU Xiaoni LI Zhongqin ross EDWARDS WANG Lixia Key Laboratory of Cryosphere and Environment/Tianshan Glaciological Station/Laboratory of Ice Core and Cold Regions Environment Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Tianshui Normal University Imaging and Applied Physics Curtin University of Technology

Chemical records from alpine ice cores provide an invaluable source of paleoclimatic and environ- mental information. Not only the atmospheric chemical composition but also depositional and post-depositional processes are recorded within snow/tim strata. To interpret the environmental and climatic significance of ice core records, we studied the variability of glacier snowpack chemistry by investigating homogeneous snowpacks from October 2003 to September 2006 on Urumqi Glacier No. 1 in eastern Tianshan Mountains, Central Asia. Principle Component Analysis of ionic species in dry and wet seasons revealed the impact of meltwater in redistributing ions in the snowpacks. The 1st, 2nd and 3rd principle components for dry seasons differ significantly, reflecting complex associations between depositional or/and post-depositional processes. The variability trend of ionic concentrations during the wet seasons was found to fit a Gauss Function with significant parameters. The elution factor revealed that more than half of ions are leached out during the wet seasons. Differences with respect to ion snowpack mo- bility were found. Of the ions studied SO42- was the most mobile and Mg2＋ the least mobile. A threshold relationship between air temperatures and the elution process was investigated over the study period. The results indicate that the strong melt/ablation processes and iconic redistribution occur at a threshold air temperature of 0℃. The study found that surface melt on the snowpacks is the main factor causing the alteration of the snowpack chemistry. Rainfall also has an impact on the chemistry but plays a less significant role than the surface melt.

关键词： Urumqi Glacier No. 1 snowpack meltwater air temperature precipitation