检索结果-南通市图书馆

A Histogram-Based Static Error Correction Technique for Flash ADCs: Implementation

在线全文

学校读者我要写书评

暂无评论

ZTE Communications 2012年第1期10卷 63-70页

作者： j jacob wikner Armin jalili Sayed Masoud Sayedi Rasoul Dehghani Department of Electrical Engineering Linkping University Department of Electrical and Computer Engineering Isfahan University of Technology

In this paper, we focus on practical issues in implementing a calibration technique for medium-resolution, highspeed flash analogtodigital converters （ADCs）. In [1], we theoretically describ the calibration technique and perform a behaviorallevel simulation to test its functionality [1]. In this work, we discuss some issues in transistorlevel implementation. The predominant factors that contribute to static errors such as reference generator mismatch and trackandhold （T/H） gain error can be treated as inputreferred offsets of each comparator. Using the proposed calibration technique, these errors can be calibrated with minimal detriment to the dynamic performance of the converter. We simulate a transistorlevel implementation of a 5-bit, 1 GHz ADC in a 1.2 V, 65 nm CMOS process. The results show that DNL can be improved from 2.5 LSB to below 0.7 LSB after calibration, and INL can be improved from 1.6 LSB to below 0.6 LSB after calibration.

关键词： Calibration chopping flash ADC PDF generator referencegenerator circuit track and hold circuit

Small mammal community composition impacts bank vole (Clethrionomys glareolus) population dynamics and associated seroprevalence of Puumala orthohantavirus

在线全文

学校读者我要写书评

暂无评论

Integrative Zoology 2024年第1期19卷 52-65页

作者： Felicitas Maria BUjNOCH Daniela REIL Stephan DREWES Ulrike MROSENFELD Rainer G.ULRICH jens jacob Christian IMHOLT julius Kühn-Institute Federal Research Centre for Cultivated PlantsInstitute for Epidemiology and Pathogen DiagnosticsRodent ResearchMünsterGermany University of Münster Institute for Evolution and BiodiversityMünsterGermany Friedrich-Loeffler-Institut Federal Research Institute for Animal HealthInstitute of Novel and Emerging Infectious DiseasesGreifswald-Insel RiemsGermany

Rodents are important reservoirs for zoonotic pathogens that cause diseases in *** is hypoth-esized to be closely related to pathogen prevalence through multiple direct and indirect *** example,the presence of non-host species can reduce contact rates of the main reservoir host and thus reduce the risk of transmission(“dilution effect”).In addition,an overlap in ecological niches between two species could lead to increased interspecific competition,potentially limiting host densities and reducing density-dependent pathogen transmission *** this study,we investigated the relative impact of population-level regulation of direct and indirect drivers of the prevalence of Puumala orthohantavirus(PUUV)in bank voles(Clethrionomys glareolus)during years with high *** compiled data on small mammal community composition from four regions in Germany between 2010 and *** equation modeling revealed a strong seasonality in PUUV control mechanisms in bank *** abundance of shrews tended to have a negative relationship with host abundance,and host abundance positively influenced PUUV seroprevalence,while at the same time increasing the abundance of competing non-hosts like the wood mouse(Apodemus sylvaticus)and the yellow-neckedfield mouse(Apodemusflavicollis)were associated with reduced PUUV seroprevalence in the *** results indicate that for PUUV in bank voles,dilution is associated with increased interspecific *** pressures leading to the decline of Apodemus *** a specific habitat could lead to the amplification of mechanisms promoting PUUV transmission within the host populations.

关键词： bank vole biodiversity Puumala orthohantavirus small mammals

A randomized controlled trial of Promoting Physical Activity in Regional and Remote Cancer Survivors(PPARCS)

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 2024年第1期13卷 81-89页

作者： Sarah j.Hardcastle Chloe Maxwell-Smith Vinicius Cavalheri Terry Boyle Marta Leyton Román Cameron Platell Michael Levitt Christobel Saunders Frank Sardelic Sophie Nightingale jacob McCormick Craig Lynch Paul A.Cohen Max Bulsara Dana Hince Sport and Physical Activity Research Centre Sheffield Hallam UniversitySheffieldS102BPUK Institute for Health Research The University of Notre DameFremantleWA 6959Australia Curtin School of Population Health Curtin UniversityPerthWA 6845Australia Curtin School of Allied Health Curtin UniversityPerthWA 6845Australia Allied Health South Metropolitan Health ServiceMurdochWA 6150Australia Australian Centre for Precision Health University of South AustraliaAdelaideSA 5001Australia Department of Didactics of Musical Plastic and Body ExpressionUniversity of ExtremaduraCaceres 10071Spain St.john of God Subiaco Hospital PerthWA 6008Australia Department of Surgery University of MelbourneMelbourneVIC 3010Australia Tamara Private Hospital TamworthNSW 2340Australia Peter MacCallum Cancer Centre MelbourneVIC 3000Australia College of Health and Medicine Australian National UniversityCanberraACT 2600Australia Division of Obstetrics and Gynaecology Medical SchoolUniversity of Western AustraliaPerthWA 6009Australia

Background:Physical activity(PA)is important for cancer *** of remotely delivered interventions are needed to assist in reaching under-served non-metropolitan cancer *** objective of this study was to ascertain whether wearable technology,coupled with health coaching was effective in increasing PA in breast and colorectal cancer survivors living in regional and remote areas in ***:Cancer survivors from 5 states were randomized to intervention and control *** participants were given a Fitbit Charge 2TMand received up to 6 telephone health coaching *** participants received PA print *** assessments at baseline and 12 weeks measured moderate-to-vigorous PA(MVPA),light PA,and sedentary ***:Eighty-seven participants were recruited(age=63±11 years;74(85%)female).There was a significant net improvement in MVPA of 49.8 min/week,favoring the intervention group(95%confidence interval(95%CI):13.6-86.1,p=0.007).There was also a net increase in MVPA bouts of 39.5 min/week(95%CI:11.9-67.1,p=0.005),favoring the intervention *** groups improved light PA and sedentary behavior,but there were no between-group ***:This’s the first study to demonstrate that,when compared to standard practice(i.e.,PA education),a wearable technology intervention coupled with distance-based health coaching,improves MVPA in non-metropolitan cancer *** results display promise for the use of scalable interventions using smart wearable technology in conjunction with phone-based health coaching to foster increased PA in geographically disadvantaged cancer survivors.

关键词： Behavior change Exercise Health disparities Oncology Wearable technology

Inbreeding and genetic load in a pair of sibling grouse species:Tetrastes sewersowi and ***

在线全文

学校读者我要写书评

暂无评论

Avian Research 2024年第2期15卷 265-270页

作者： Kai Song Tom van der Valk Bin Gao Peter Halvarsson Yun Fang Wendong Xie Siegfried Klaus Zhiming Han Yue-Hua Sun jacob Hoglund Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China Animal Ecology Department of Ecology and GeneticsUppsala UniversityNorbyvagen 18DUppsala75236Sweden Department of Cell and Molecular Biology Uppsala75273Sweden Unit of Parasitology Department of Biomedicine and Veterinary Public HealthSwedish University of Agricultural SciencesPO Box 7036Uppsala75007Sweden Lindenhohe 5 JenaD-07749Germany The State Key Laboratory of Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China

Genetic load and inbreeding are recognized as important factors to be considered in conservation *** levels of both can increase the risk of population extinction by negatively impacting fitness-related characters in many species of plants and animals,including humans(inbreeding depression).Genomic tech-niques are increasingly used in measuring and understanding genetic load and inbreeding and their importance in evolution and *** used whole genome resequencing data from two sibling grouse species in subarctic Eurasia to quantify *** found a large range of inbreeding measured as FROH(fraction of runs of homozygosity)in individuals from different populations of Chinese Grouse(Tetrastes sewerzowi)and Hazel Grouse(***).FROH estimated from genome-wide runs of homozygosity(ROH)ranged from 0.02 to 0.24 among Chinese Grouse populations and from 0.01 to 0.44 in Hazel *** from a population of Chinese Grouse residing in the Qilian mountains and from the European populations of Hazel Grouse(including samples from Sweden,Germany and Northeast Poland)were the most inbred(FROH ranged from 0.10 to 0.23 and 0.11 to 0.44,respectively).These levels are comparable to other highly inbred populations of *** Grouse from northern China and Chinese Grouse residing in the Qinghai-Tibetan Plateau showed relatively lower inbreeding *** of the ratio between deleterious missense mutations and synonymous mutations revealed higher levels in Chinese Grouse as compared to Hazel *** results are possibly explained by higher fixation rates,mutational melt down,in the range-restricted Chinese Grouse compared to the wide-ranging Hazel ***,when we compared the relatively more severe class of loss-of-function muta-tions,Hazel Grouse had slightly higher levels than Chinese Grouse,a result which may indicate that purifying selection(purging)has been more efficient in Chinese Grouse on this class of mutations.

关键词： Genetic load Inbreeding Purifying selection Qinghai-Tibetan Plateau ROH Tetrastes

In vivo measurement of NADH fluorescence lifetime in skeletal muscle via -ber-coupled time-correlated single photon counting

在线全文

学校读者我要写书评

暂无评论

journal of Innovative Optical Health Sciences 2024年第1期17卷 121-134页

作者： Kathryn M.Priest jacob V.Schluns Nathania Nischal Colton L.Gattis jeffrey C.Wolchok Timothy j.Muldoon Department of Biomedical Engineering University of Arkansas FayettevilleARUSA

Nicotinamide adenine dinucleotide(NADH)is a cofactor that serves to shuttle electrons during metabolic processes such as glycolysis,the tricarboxylic acid cycle,and oxidative phosphorylation(OXPHOS).NADH is autofluorescent,and itsfluorescence lifetime can be used to infer metabolic dynamics in living ***-coupled time-correlated single photon counting(TCSPC)equipped with an implantable needle probe can be used to measure NADH lifetime in vivo,enabling investigation of changing metabolic demand during muscle contraction or tissue *** study illustrates a proof of concept for point-based,minimally-invasive NADHfluorescence lifetime measurement in *** muscle loss(VML)injuries were created in the left tibialis anterior(TA)muscle of male Sprague Dawley *** lifetime measurements were collected before,during,and after a 30 s tetanic contraction in the injured and uninjured TA muscles,which was subsequently-t to a biexponential decay model to yield a metric of NADH utilization(cytoplasmic vs protein-bound NADH,the A11/A22 ratio).On average,this ratio was higher during and after contraction in uninjured muscle compared to muscle at rest,suggesting higher levels of free NADH in contracting and recovering muscle,indicating increased rates of *** injured muscle,this ratio was higher than uninjured muscle overall but decreased over time,which is consistent with current knowledge of inflammatory response to injury,suggesting tissue regeneration has *** data suggest that-ber-coupled TCSPC has the potential to measure changes in NADH binding in vivo in a minimally invasive manner that requires further investigation.

关键词： Glycolysis oxidative phosphorylation energy metabolism volumetric muscle loss

Risk of bias and reporting practices in studies comparing VO2max responses to sprint interval *** training:A systematic review and meta-analysis

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 2022年第5期11卷 552-566页

作者： jacob T.Bonafiglia Hashim Islam Nicholas Preobrazenski Brendon j.Gurd School of Kinesiology and Health Studies Queen’s UniversityKingstonOntarioK7L 3N6Canada

Background:It remains unclear whether studies comparing _(max)imal oxygen uptake(VO_(2max))response to sprint interval training(SIT)***-intensity continuous training(MICT)are associated with a high risk of bias and poor reporting *** purpose of this study was to evaluate the risk of bias and quality of reporting in studies comparing changes in VO_(2max) between SIT and ***:We conducted a comprehensive literature search of 4 major databases:AMED,CINAHL,EMBASE,and *** were excluded if participants were not healthy adult humans or if training protocols were unsupervised,lasted less than 2 weeks,or utilized mixed exercise *** used the Cochrane Collaboration tool and the CONSORT checklist for non-pharmacological trials to evaluate the risk of bias and reporting quality,***:Twenty-eight studies with 30 comparisons(3 studies included 2 SIT groups)were included in our meta-analysis(n=360 SIT participants:body mass index(BMI)=25.9±3.7 kg/m^(2),baseline VO_(2max)=37.9±8.0 mL/kg/min;n=359 MICT participants:BMI=25.5±3.8 kg/m^(2),baseline VO_(2max)=38.3±8.0 mL/kg/min;all mean±SD).All studies had an unclear risk of bias and poor reporting ***:Although we observed a lack of superiority between SIT and MICT for improving VO_(2max)(weighted Hedge’s g=0.004,95%con-fidence interval(95%CI):-0.08 to 0.07),the overall unclear risk of bias calls the validity of this conclusion into *** studies using robust study designs are needed to interrogate the possibility that SIT and MICT result in similar changes in VO_(2max).

关键词： Bias Cardiorespiratory fitness CONSORT Moderate-intensity continuous training Sprint interval training

Retention of fin clips and fin and operculum punch marks in rainbow trout

在线全文

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2022年第6期7卷 660-663页

作者： Alex j.Rosburg jacob L.Davis Michael E.Barnes South Dakota Department of Game Fishand Parks4725 Jackson BoulevardRapid CitySD57702USA South Dakota Department of Game Fishand Parks4130 Adventure TrailRapid CitySD57702USA South Dakota Department of Game Fishand Parks19619 Trout Loop SpearfishSouth Dakota57783USA

Fin clips(complete fin removal)or punch marks(stamping of a hole)in fins or operculum are quick and inexpensive methods to identify individuals or groups of *** study evaluated the retention of 6 mm diameter punch marks on the operculum,caudal(upper and lower lobes),dorsal,pelvic,and anal fins,and fin clips on adipose,pectoral,pelvic,dorsal and anal fins of rainbow trout Oncorhynchus mykiss for 279 *** and survival were not significantly different among fish with the different mark types or *** the end of the experiment,100%of adipose clips,97%of pectoral and anal fin clips,and 93%of dorsal clips and pelvic fin clips were *** of punch marks was 57%and 50%for the lower and upper caudal fin lobe locations respectively,23%for the dorsal fin,and 3%for the *** pelvic or anal fin punch marks were identified at the end of the *** differences in retention among the treatment groups did not occur until 125 days post marking,after which all fin clip treatments had significantly greater retention than pelvic and dorsal punch *** 244 days,fin clips outperformed all punch mark locations.

关键词： Marking Rainbow trout Oncorhynchus mykiss Fin punch Fin clip Mark retention

The impact of seasonality on multi-scale feature extraction techniques

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International journal of Digital Earth 2020年第1期13卷 9-21页

作者： Brian Moore jacob j.McKee Geographic Information Science and Technology Group Computational Sciences and Engineering DivisionOak Ridge National LaboratoryOak RidgeTNUSA

A key component in constructing a broad-scale,gridded population dataset is fine resolution geospatial data accurately depicting the extent of human *** datasets are often developed using a wide range of methods and classification techniques,including the use of spatial features,spectral features,or the coupling of both to identify the presence of man-made structures from high-resolution satellite *** using spatial and textural-based descriptors to generate highresolution settlement layers for two dissimilar regions at the peak of seasonal disparity,this study attempts to quantify the influence of seasonality on the accuracy of a supervised,multi-scale,feature extraction framework for automated delineation of human *** generated by numerous models are evaluated against a reference dataset allowing for assessment of seasonal and feature differences in the context of *** or regional mapping of human settlement requires the assemblage of high-resolution satellite images with variegated acquisition characteristics(season,sun elevation,off-nadir,etc.)to produce a cloud-free composite image from which features are *** of this study suggest an emphasis on imagery criteria,in particular acquisition date,could improve classification accuracy when mapping human settlement at scale.

关键词： Remote sensing highresolution imagery image processing human settlement accuracy

Gait analysis in swine,sheep,and goats after neurologic injury:a literature review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2023年第9期18卷 1917-1924页

作者： jacob W.Sveum Raveena R.Mishra Taylor L.Marti jalon M.jones Daniel j.Hellenbrand Amgad S.Hanna Department of Neurological Surgery University of Wisconsin School of Medicine and Public Health(UWSMPH)MadisonWIUSA

Medical research on neurologic ailments requires representative animal models to validate treatments before they are translated to human clinical *** are the predominant animal model used in neurological research despite limited anatomic and physiologic similarities to *** a result,functional testing designed to assess locomotor recovery after neurologic impairment is well established in rodent ***,large r,more clinically relevant models have not been as well *** achieve similar locomotor testing standardization in larger animals,the models must be accessible to a wide array of ***-human primates are the most relevant animal model fo r translational research,however ethical and financial barriers limit their *** review focuses on swine,sheep,and goats as large animal alternatives for transitional studies between rodents and non-human *** objective of this review is to compare motor testing and data collection methods used in swine,sheep,and goats to encourage testing standardization in these larger animal *** PubMed database was analyzed by searching combinations of swine,sheep,and goats,neurologic injuries,and functional *** were categorized by animal model,data collection method,and assessment *** and sheep were used in the majority of the studies,while only two studies were found using *** functional assessments included open pen analysis,treadmill walking,and guided free *** collection methods included subjective behavioral rating scales and objective tools such as pressure-sensitive mats and image-based analysis ***,swine and sheep were well-suited for a variety of assessment designs,with treadmill walking and guided free walking offering the most consistency across multiple *** collection methods varied,but image-based gait analysis software provided the most robust *** studies should be conducted to stan

关键词： functional testing gait analysis goats large animals neurologic injury sheep spinal cord injury swine