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Batch Active learning for Multispectral and Hyperspectral Image Segmentation Using Similarity Graphs

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1013-1033页

作者： Bohan Chen Kevin Miller Andrea l.Bertozzi Jon Schwenk Department of Mathematics University of CaliforniaLos Angeles520 Portola PlazaLosAngeles90095CAUSA Oden Institute for Computational Engineering and Sciences University of Texas at Austin201 E 24th StAustin 78712TXUSA los Alamos National laboratory Los AlamosNM 87545USA

Graph learning,when used as a semi-supervised learning(SSl)method,performs well for classification tasks with a low label *** provide a graph-based batch active learning pipeline for pixel/patch neighborhood multi-or hyperspectral image *** batch active learning approach selects a collection of unlabeled pixels that satisfy a graph local maximum constraint for the active learning acquisition function that determines the relative importance of each pixel to the *** work builds on recent advances in the design of novel active learning acquisition functions(e.g.,the Model Change approach in arXiv:2110.07739)while adding important further developments including patch-neighborhood image analysis and batch active learning methods to further increase the accuracy and greatly increase the computational efficiency of these *** addition to improvements in the accuracy,our approach can greatly reduce the number of labeled pixels needed to achieve the same level of the accuracy based on randomly selected labeled pixels.

关键词： Image segmentation Graph learning Batch active learning Hyperspectral image

Is the propensity to emit alarm calls associated with health status?

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Current Zoology 2020年第6期66卷 607-614页

作者： austin l.Nash Alexandra H.M.Jebb Daniel T.BlUMSTEIN Department of Ecology and Evolutionary Biology University of Colorado265 UCBBoulderCO 80309USA School of Biological Sciences University of AberdeenZoology BuildingTillydrone AvenueAberdeenAB242TZUK The Rocky Mountain Biological laboratory Box 519 Crested ButteCO 81224USA Department of Ecology and Evolutionary Biology University of California621 Young Drive SouthLos AngelesCA 90095-1606USA

The production and structure of animal signals may depend on an individual's health status and may provide more than one type of information to *** alarm calls are not typically viewed as health condition dependent,recent studies have suggested that their structure,and possibly their propensity to be emitted,depends on an individual,s health condition and *** asked whether the propensity of yellow-bellied marmots(Marmota flaviventer)to emit calls is influen ced by their immuno logical or parasite status,by quantifying both trap-elicited and n atural calling rates as a function of their neutrophil-to-lymphocyte(Nl)ratio,the presence of a blood borne trypanosome,and the presenee of several intestinal parasites(Eimeria sp.,Entamoeba sp.,and Ascaris sp.).We fitted mixed effects models to determine if the health measures we collected were associated with the probability of calling in a trap and with annual rates of natural alarm *** infected with a blood-borne trypanosome were marginally more likely to call naturally and when trapped,while those infected with the intestinal parasite Ascaris were less likely to call when *** ratio was not directly associated with in-trap calling probability,but males were more likely to call when they had higher Nl ***,health conditions,such as parasite infection and immune system activation,can modulate the production of alarm signals and potentially provide in formation to both predators and prey about the caller's *** experiments are required to confirm if receivers use such information.

关键词： alarm calling animal communication antipredator behavior condition dependenee immune function parasites

Statistical Analyses of Runoff,River Stage and Peak Discharge,Tao River,China

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高原气象 1989年第1期8卷 52-63页

作者： C.A.Madramootoo,G.l.austin,M.Blaskovic McGill University McGill University McGill University Canada Canada Canada

Empirical equations relating runoff,maximum river stageand peak flow to rainfall were developed for the Tao riverdrainage basin at li Jia Cun.A basin recession curve wasderived and a frequency analysis of extreme flood events *** showed that storm runoff was highlycorrelated with ***,maximum river stage andpeak flow were not as well correlated with *** wasfound necessary to separate rainfall into stratiform andconvective *** magnitudes of the once-in-50 year,once-in-100 year and once-in-200 year events,calculated by thelog Pearson type Ⅲ distribution were closely equal to thoseestimated from a log-probability *** forimproving the predictive ability of the empirical equations arepresented.

关键词： Figure

A novel method to fabricate TiAl intermetallic alloy 3D parts using additive manufacturing

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Defence Technology（防务技术） 2017年第2期13卷 72-76页

作者： J.J.S. Dilip H. Miyanaji austin lassell Thomas l. Starr Brent Stucker Rapid Prototyping Center Department of Industrial EngineeringUniversity of LouisvilleLouisvilleKY 40292USA Department of Chemical Engineering University of LouisvilleLouisvilleKY 40292USA 3DSIM 1794 Olympic ParkwaySuite 110Park CityUT 84098USA

The present work explores the feasibility of fabricating porous 3D parts in TiAl intermetallic alloy directly from Tie6Ale4V and Al powders. This approach uses a binder jetting additive manufacturing process followed by reactive sintering. The results demonstrate that the present approach is successful for realizing parts in TiAl intermetallic alloy.

关键词： Additive manufacturing Binder jetting Intermetallic Titanium aluminide Reactive sintering

Fjord-Type AIEgens Based on Inherent Through-Space Conjugation

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CCS Chemistry 2024年第7期6卷 1739-1747页

作者： Ye-Qiang Han Yuan Xie Jianyu Zhang Shiyu Tan Haoke Zhang Ben Zhong Tang Jonathan l.Sessler Feihe Huang Stoddart Institute of Molecular Science Department of ChemistryZhejiang UniversityHangzhou 310058 Zhejiang-Israel Joint laboratory of Self-Assembling Functional Materials ZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311215 MOE Key laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310058 Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518061 Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyKowloonHong Kong 999077 School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Guangzhou 518172 Department of Chemistry The University of Texas at AustinAustinTexas 78712-1224 Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001

Through-space conjugation(TSC)is a noncovalently electronic interaction that is emerging as a potential complement to through-bond conjugation(TBC)-based strategies for constructing luminescent ***,the design of efficient luminogens based on TSC is currently challenging due to a lack of established structure-property *** is particularly true in the case of luminogens displaying aggregation-induced emission(AIE)*** this work,three terphenyl derivatives were prepared,and their photophysical properties were systemically *** was found that relative to the corresponding m-and p-linked analogues,the electronic interaction of TBC is weakened while the strength of TSC is commensurately enhanced in the constitutional isomer containing an o-linked fjordtype *** this set of luminogens,the presence of a fjord-type arrangement promotes a transformation from aggregation-caused quenching to *** investigations involving congeneric quaterphenyl and pentphenyl isomers support the universality of the fjord-type unit as a framework for synthesizing AIE-active luminogens(AIEgens)with inherent *** work not only provides a novel set of AIEgens but also establishes the utility of TSC in controlling the photophysical properties of nonconventional and twisted luminogens.

关键词： fjord-type through-space conjugation through-bond conjugation aggregation-induced emission luminescence twisted conformation

Role of Calcium-Independent Phospholipase A2 V IA in Mediating Neurological Disorder and Cancer

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Transactions of Tianjin University 2017年第1期23卷 1-10页

作者： Chang Y. Chung Yu Shi austin R. Surendranath Nasir Jalal Janak l. Pathak Selvaraj Subramaniyam School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China

Calcium-independent phospholipase A2 (iPlA2) belongs to the group VI family of phospholipase superfamily (PlA2) that catalyses the hydrolysis of glycerophospholipids at the sn-2 ester bond, producing unesterified fatty acids and 2-lysophospholipids. Research interests on iPlA2 have not been as significant as those on secretary PlA2 and cytosolic PlA2. However, more efforts have been made recently on understanding the expression, regulation and biological function of iPlA2. iPlA2 plays important roles in several biological processes, including signal transduction, phospholipid remodelling, eicosanoid formation, cell proliferation, cell differentiation and apoptosis. Modulation of iPlA2 activity can have prominent effects on cellular metabolism, central nervous system and cardiovascular functions. Thus, dysregulation iPlA2 can play a vital role in the pathogenesis of several diseases. The aim of this review is to provide the current understanding of the structure, function and regulation of group VI iPlA2 and highlight its potential mechanisms of action in mediating several neurological disorders and cancer.

关键词： Calcium-independent phospholipase A2 Neurological disorders Memory acquisition Alzheimer’s disease Infantile neuroaxonal dystrophy Cancer

The 2^(nd)Asian Conference on Porphyrins,Phthalocyanines and Related Materials

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Chinese Chemical letters 2024年第7期35卷 1-3页

作者： Gaojie Zhu Zhen Yang Shijun li Weihua Zhu Rui Cao Junlong Zhang Jianzhang Zhao Jonathan l.Sessler Xunjin Zhu Jianxin Song Yongshu Xie Jianzhuang Jiang Key laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of EducationHangzhou Normal UniversityHangzhou 311121China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China Key laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an 710119China Beijing National laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China State Key laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China Department of Chemistry The University of TexasAustinTexas 78712-1224United States Department of Chemistry and Institute of Advanced Materials Hong Kong Baptist UniversityHong Kong 999077China Key laboratory of Chemical Biology and Traditional Chinese Medicine(Ministry of Educational of China) Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceCollege of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

In the past decades,porphyrins,phthalocyanines and related materials have attracted significant attention due to their diverse and brilliant structures[1,2],as well as their unique electronic structures and photophysi... 详细信息

关键词： cyanine phthalocyanine Porphyrin

Population structure and association mapping to detect QTl controlling tomato spotted wilt virus resistance in cultivated peanuts

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The Crop Journal 2018年第5期6卷 516-526页

作者： Jing li Yueyi Tang Alana l.Jacobson Phat M.Dang Xiao li Ming li Wang austin Hagan Charles Y.Chen Department of Crop Soil and Environmental SciencesAuburn UniversityAuburnAL 36849USA Shandong Peanut Research Institute Qingdao 266100China Department of Entomology and Plant Pathology Auburn UniversityAuburnAL 36849USA USDA-ARS National Peanut Research laboratory DawsonGA 39842USA USDA-ARS Plant Genetic Resources Conservation Unit GriffinGA 30223USA

Tomato spotted wilt(TSW)is a serious virus disease of peanut in the United *** for TSWV resistance would be facilitated by the implementation of marker-assisted selection in breeding programs;however,genes associated with resistance have not been *** mapping is a type of genetic mapping that can exploit relationships between markers and traits in many *** objectives of this study were to examine genetic diversity and population structure in the *** mini-core collection using simple sequence repeat(SSR)markers,and to conduct association mapping between SSR markers and TSWV resistance in cultivated *** hundred and thirty-three SSR markers were used for genotyping 104 *** subpopulations,generally corresponding to botanical varieties,were classified by population structure *** mapping analysis indicated that five markers:pP GPseq5D5,GM1135,GM1991,TC23C08,and TC24C06,were consistently associated with TSW resistance by the Q,PCA,Q+K,and PCA+K *** markers together explained 36.4%of the phenotypic ***,pP GPseq5D5 and GM1991 were associated with both visual symptoms of TSWV and ElISA values with a high R^*** potential of these markers for use in a marker-assisted selection program to breed peanut for resistance to TSWV is discussed.

关键词： Association mapping SSR markers Tomato spotted wilt virus Peanuts

Baseline effects of lysophosphatidylcholine and nerve growth factor in a rat model of sciatic nerve regeneration after crush injury

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Neural Regeneration Research 2018年第5期13卷 846-853页

作者： Ryan l.Wood Keaton S.Karlinsey austin D.Thompson Mark N.Rigby Greggory D.Boatright William G.Pitt Beverly l.Roeder Scott C.Steffensen Alonzo D.Cook Department of Chemical Engineering Brigham Young University Neuroscience Center Brigham Young University Department of Biology Brigham Young University Department of Psychology Brigham Young University

Schwann cells play a major role in helping heal injured nerves. They help clear debris, produce neurotrophins, upregulate neurotrophin receptors, and form bands of Büngner to guide the healing nerve. But nerves do not always produce enough neurotrophins and neurotrophin receptors to repair themselves. Nerve growth factor（NGF） is an important neurotrophin for promoting nerve healing and lysophosphatidylcholine（lPC） has been shown to stimulate NGF receptors（NGFR）. This study tested the administration of a single intraneural injection of lPC（1 mg/ml for single lPC injection and 10 mg/ml for multiple lPC injections） at day 0 and one（day 7）, two（days 5 and 7）, or three（days 5, 7, and 9） injections of NGF（160 ng/ml for single injections and 80 ng/ml for multiple injections） to determine baseline effects on crush ed sciatic nerves in rats. The rats were randomly divided into four groups： control, crush, crush-NGF, and crush-lPC-NGF. The healing of the nerves was measured weekly by monitoring gait; electrophysiological parameters： compound muscle action potential（CMAP） amplitudes; and morphological parameters： total fascicle areas, myelinated fiber counts, fiber densities, fiber packing, and mean g-ratio values at weeks 3 and 6. The crush, crush-NGF, and crush-lPC-NGF groups statistically differed from the control group for all six weeks for the electrophysiological parameters but only differed from the control group at week 3 for the morphological parameters. The crush, crush-NGF, and crush-lPC-NGF groups did not differ from each other over the course of the study. Single injections of lPC and NGF one week apart or multiple treatments of NGF at 5, 7 and 9 days post-injury did not alter the healing rate of the sciatic nerves during weeks 1-6 of the study. These findings are important to define the baseline effects of NGF and lPC injections, as part of a larger effort to determine the minimal dose regimen of NGF to regenerate peripheral nerves.

关键词： lysophosphatidylcholine neurotrophic factor growth factor sciatic nerve crush peripheral nerve regeneration