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A Weakly Supervised deep Learning Framework for Sorghum Head Detection and Counting

Plant Phenomics 2019年第1期1卷 1-14页

作者： Sambuddha Ghosa Bangyou Zheng Scott Chapman Andries B.Potgieter David R.Jordan Xuemin Wang Asheesh K.Singh Arti Singh Masayuki Hirafuji Seishi Ninomiya Baskar Ganapathysubramanian Soumik Sarkar Wei Guo Department of Mechanical Engineering Iowa State UniversityAmesIAUSA Department of Computer Science Iowa State UniversityAmesIAUSA CSIRO Agriculture and Food St.LuciaQLDAustralia School of Agriculture and Food Sciences The University of QueenslandGattonQLD 4343Australia Queensland Alliance for Agriculture and Food innovation(QAAFI) The University of QueenslandGattonQLDAustralia Queensland Alliance for Agriculture and Food innovation(QAAFI) The University of QueenslandWarwickQLDAustralia Department of Agronomy Iowa State UniversityAmesIAUSA International Field Phenomics Research Laboratory Institute for Sustainable Agro-Ecosystem Services

The yield of cereal crops such as sorghum(Sorghum bicolor ***)depends on the distribution of crop-heads in varying branching ***,counting the head number per unit area is critical for plant breeders to correlate with the genotypic variation in a specific breeding ***,measuring such phenotypic traitsmanually is an extremely labor-intensive process and suffers from low efficiency and human ***,the process is almost infeasible for large-scale breeding plantations or *** learning-based approaches like deep convolutional neural network(CNN)based object detectors are promising tools for efficient object detection and ***,a significant limitation of such deep learningbased approaches is that they typically require a massive amount of hand-labeled images for training,which is still a tedious ***,we propose an active learning inspired weakly supervised deep learning framework for sorghum head detection and counting from UAV-based *** demonstrate that it is possible to significantly reduce human labeling effort without compromising final model performance(R^(2)between human count and machine count is 0.88)by using a semitrained CNN model(i.e.,trained with limited labeled data)to perform synthetic *** addition,we also visualize key features that the network *** improves trustworthiness by enabling users to better understand and trust the decisions that the trained deep learning model makes.

关键词： Unmanned aerial vehicles (UAV)

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Global Solutions of Shock Reflection by Wedges for the Nonlinear Wave Equation

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Chinese Annals of Mathematics,Series B 2011年第5期32卷 643-668页

作者： Xuemei DENG Wei XIANG School of Mathematical Sciences Xiamen University Xiamen 361005 Fujian China Corresponding author. School of Mathematical Sciences Fudan University Shanghai 200433 China

When a plane shock hits a wedge head on, it experiences a reflection-diffraction process and then a self-similar reflected shock moves outward as the original shock moves forward in time. In this paper, shock reflection by large-angle wedges for compressible flow modeled by the nonlinear wave equation is studied and a global theory of existence, stability and regularity is established. Moreover, C^0,1 is the optimal regularity for the solutions across the degenerate sonic boundary.

关键词： Compressible flow Conservation laws Nonlinear wave system Regularreflection

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How to Deploy Intelligent Reflecting Surfaces in Wireless Network:BS-side,User-side, or Both Sides?

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Journal of Communications and Information Networks 2022年第1期7卷 1-10页

作者： Changsheng You Beixiong Zheng Weidong Mei Rui Zhang Department of Electronic and Electrical Engineering Southern University of Science and Technology(SUSTech)Shenzhen 518055China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore School of Microelectronics South China University of Tech-nologyGuangzhou 511442China

The performance of wireless communication systems is fundamentally constrained by the random and uncontrollable wireless channel. By leveraging the recent advances in digitally-controlled metasurface, intelligent reflecting surface (IRS) has emerged as a promising solution to enhance the wireless network performance by smartly reconfiguring the radio propagation environment. Despite the substantial research on IRS-aided communications, this article addresses the important issue of how to deploy IRSs in a wireless network to achieve its optimum performance. We first compare the two conventional strategies of deploying IRS at the side of base station or users in terms of various communication performance metrics,and then propose a new hybrid IRS deployment strategy by combining their complementary advantages. Moreover,the main challenges in optimizing IRS deployment as well as their promising solutions are discussed. Numerical results are also presented to compare the performance of different IRS deployment strategies and draw useful insights for practical design.

关键词： intelligent reflecting surface(IRS) IRS deployment double-IRS system cooperative beamforming channel estimation

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Validity of a noninvasive estimation of deep body temperature when wearing personal protective equipment during exercise and recovery

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Military Medical Research 2019年第4期6卷 328-339页

作者： Andrew P.Hunt Mark J.Buller Matthew J.Maley Joseph T.Costello Ian B.Stewart School of Exercise and Nutrition Sciences&Institute of Health and Biomedical innovation Queensland University of TechnologyBrisbaneQLDAustralia United States Army Research Institute of Environmental Medicine NatickMAUSA Extreme Environments Laboratory Department of Sport and Exercise ScienceUniversity of PortsmouthPortsmouthUK

Background:deep body temperature is a critical indicator of heat ***,direct measures are often invasive,costly,and difficult to implement in the *** study assessed the agreement between deep body temperature estimated from heart rate and that measured directly during repeated work bouts while wearing explosive ordnance disposal(EOD)protective clothing and during ***:Eight males completed three work and recovery periods across two separate *** consisted of treadmill walking on a 1%incline at 2.5,4.0,or 5.5 km/h,in a random order,wearing EOD protective *** temperature and relative humidity were maintained at 24℃and 50%[Wet bulb globe temperature(WBGT)(20.9±1.2)℃]or 32℃and 60%[WBGT(29.0±0.2)℃]on the separate days,*** rate and gastrointestinal temperature(TGI)were monitored continuously,and deep body temperature was also estimated from heart rate(ECTemp).Results:The overall systematic bias between TGI and ECTemp was 0.01℃with 95%limits of agreement(Lo A)of±0.64℃and a root mean square error of 0.32℃.The average error statistics among participants showed no significant differences in error between the exercise and recovery periods or the environmental *** TGI levels of(37.0–37.5)℃,(37.5–38.0)℃,(38.0–38.5)℃,and>38.5℃,the systematic bias and±95%Lo A were(0.08±0.58)℃,(–0.02±0.69)℃,(–0.07±0.63)℃,and(–0.32±0.56)℃,***:The findings demonstrate acceptable validity of the ECTemp up to 38.5℃.Conducting work within an ECTemp limit of 38.4℃,in conditions similar to the present study,would protect the majority of personnel from an excessive elevation in deep body temperature(>39.0℃).

关键词： Protective clothing Body core temperature Heat strain Heat stress Kalman filter Explosive ordnance disposal

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A Preliminary Investigation of Pathogenic Fungi from Lotus(Nelumbo nucifera Gaertn)in Nanchang City

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生物灾害科学 2021年第2期44卷 123-135页

作者： HUANG Jingyue TANG Hong GU Bo TU Juanjuan HUANG Jiawen ZHONG Cheng HU Dianming School of Biological Sciences and Engineering Jiangxi Agricultural UniversityNanchang 330045China Bioengineering and Technological Research centre for Edible and Medicinal Fungi Jiangxi Agricultural UniversityNanchang 330045China Jintan Town Government Service Center of Jishui County Ji’an 331600China

[Objectives]Lotus(Nelumbo nucifera Gaertn)is an economically important aquatic plant in *** disease is a serious problem in lotus *** this study,the pathogenic fungi on lotus in Nanchang City were investigated to lay the foundation for the disease control.[Methods]Lotus leaves and stems in ponds of Nanchang City were collected,the fungi on leave/stem spots were isolated and *** morphological characters and ITS sequences were used to identify the strains.[Results]49 strains were isolated and identified to 20 species,belonging to 12 genera.[Discussion]15 species may firstly be reported on lotus in this study,i.e.,Alternaria angustiovoidea,Alternaria compacta,Alternaria ricini,Alternaria tenuissima,Arthrinium arundinis,Botryosphaeria dothidea,Curvularia spicifera,Diaporthe australiana,Diaporthe eres,Diaporthe tectonae,Epicoccum nigrum,Fusarium fujikuroi,Neofusicoccum parvum,Nigrospora sphaerica,and Phomopsis eucommii.

关键词： taxonomy lotus leaf pathogenic fungi fungal diversity

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Genome-wide association study of micronaire using a natural population of representative upland cotton(Gossypium hirsutum L.)

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Journal of Cotton Research 2021年第2期4卷 114-125页

作者： SONG Jikun PEI Wenfeng MA Jianjiang YANG Shuxian JIA Bing BIAN Yingying XIN Yue WU Luyao ZANG Xinshan QU Yanying ZHANG Jinfa WU Man YU Jiwen State Key Laboratory of Cotton Biology Ministry of Agriculture and Rural Affairs/Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang455000HenanChina Engineering Research centre of Cotton Ministry of Education/College of AgricultureXinjiang Agricultural UniversityUrumqi830052XinjiangChina Department of Plant and Environmental Sciences New Mexico State UniversityLas Cruces880033NMUSA

Background: Micronaire is a comprehensive index reflecting the fineness and maturity of cotton *** is one of the important internal quality indicators of the cotton fiber and is closely related to the value of the cotton *** the genetic basis of micronaire is required for the genetic improvement of the ***,the genetic architecture of micronaire at the genomic level is *** present genome-wide association study(GWAS)aimed to identify the genetic mechanism of the micronaire trait in 83 representa:tive upland cotton lines grown in multiple *** GWAS of micronaire used 83 upland cotton accessions assayed by a Cotton 63 K Illumina Infinium single nucleotide polymorphism(SNP)array.A total of 11 quantitative trait loci(QTLs)for micronaire were detected on 10 *** 11 QTLs included 27 identified genes with specific expression patterns.A novel QTL,qFM-A12–1,included 12 significant SNPs,and GhFLA9 was identified as a candidate gene based on haplotype block analysis and on strong and direct linkage disequilibrium between the significantly related SNPs and ***9 was expressed at a high level during secondary wall thickening at 20∼25 days *** expression level of GhFLA9 was significantly higher in the low micronaire line(Msco-12)than that in the high micronaire line(Chuangyou-9).Conclusions: This study provides a genetic reference for genetic improvement of cotton fiber micronaire and a foundation for verification of the functions of GhFLA9.

关键词： Upland cotton(Gossypium hirsutum L.) Fiber micronaire GWAS Candidate genes GhFLA9

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Thermogravimetric analysis and kinetic modeling of the co-pyrolysis of a bituminous coal and poplar wood

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Chinese Journal of Chemical Engineering 2023年第6期58卷 53-68页

作者： Wei Wang Romain Lemaire Ammar Bensakhria Denis Luart Department of Mechanical Engineering École de technologie supérieureMontrealQuebec H3C 1K3Canada Universitéde Technologie de Compiègne Centre de recherche de RoyallieuEA 4297-TIMRBP2052960205 CompiègneFrance École Supérieure de Chimie Organique et Minérale 1 Rue du Réseau Jean-Marie Buckmaster60200 CompiègneFrance

The co-pyrolysis of coal and biomass has proven to be a promising route to produce liquid and gaseous fuels as well as specific value-added chemicals while contributing to mitigating CO_(2) *** interactions between the co-processed feedstocks,however,need to be elucidated to support the development of such a thermochemical conversion *** this context,the present work covers the kinetic analysis of the co-pyrolysis of a bituminous coal with poplar *** this research,biomass was blended with coal at two different mass ratios(10%(mass)and 20%(mass)).Thermogravimetric analyses were carried out with pure and blended samples at four heating rates(5,10,15 and 30℃·min^(-1)).A direct comparison of experimental and theoretical results(based on a simple additivity rule)failed to yield a clear-cut conclusion regarding the existence of synergistic *** analyses have therefore been achieved using two model-free methods(the Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose models)to estimate the rate constant parameters related to the pyrolysis process.A significant decrease of the activation energy has thus been observed when adding wood to coal(activation energies associated with the blend containing 20%(mass)of biomass being even lower than those estimated for pure wood at low conversion degrees).This trend was attributed to the possible presence of synergies whose related mechanisms are *** rate constant parameters derived by means of the two tested models were finally used to simulate the evolution of the conversion degree of each sample as a function of the temperature,thus leading to a satisfying agreement between measured and simulated data.

关键词： Co-pyrolysis Coal Wood Kinetics Synergistic effects

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Optic neuropathy and increased retinal glial fibrillary acidic protein due to microbead-induced ocular hypertension in the rabbit

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International Journal of Ophthalmology(English edition) 2016年第12期9卷 1732-1739页

作者： Jun Zhao Tian-Hui Zhu Wen-Chie Chen Shi-Ming Peng Xiao Sheng Huang Kin-Sang Cho Dong Feng Chen Guer-Sheung Liu School of Ophthalmology & Optometry Affiliated to Shenzhen University Shenzhen 518040 Guangdong Province China Shenzhen Eye Hospital Affiliated to Jinan University Shenzhen Key Laboratory of Ophthalmology Shenzhen 518040 Guangdong Province China Department of Ophthalmology Schepens Eye Research Institute Massachusetts Eye and Ear Harvard Medical School Boston 02114 USA centre for Eye Research Australia Royal Victorian Eye and Ear Hospital East Melbourne 3002 Australia Ophthalmology Department of Surgery University of Melbourne East Melbourne 3002 Australia

AIM： To characterize whether a glaucoma model with chronic elevation of the intraocular pressure （IOP） was able to be induced by anterior chamber injection of microbeads in ***： In order to screen the optimal dose of microbead injection, IOP was measured every 3d for 4wk using handheld applanation tonometer after a single intracameral injection of 10 μL, 25 μL, 50 μL or 100 μL microbeads （5×10^6 beads/mL; n=6/group） in New Zealand White rabbits. To prolong IOP elevation, two intracameral injections of 50 μL microbeads or phosphate buffer saline （PBS） were made respectively at days 0 and 21 （n=24/group）. The fellow eye was not treated. At 5wk after the second injection of microbeads or PBS, bright-field microscopy and transmission electron microscopy （TEM） were used to assess the changes in the retina. The expression of glial fibrillary acidic protein （GFAP） in the retina was evaluated by immunofluorescence, quantitative real-time polymerase chain reaction and Western blot at 5wk after the second injection of ***： Following a single intracameral injection of 10 μL, 25 μL, 50 μL or 100 μL microbead, IOP levels showed a gradual increase and a later decrease over a 4wk period after a single injection of microbead into the anterior chamber of rabbits. A peak IOP was observed at day 15 after injection. No significant difference in peak value of IOP was found between 10 μL and 25 μL groups （17.13±1.25 mm Hg vs 17.63±0.74 mm Hg; P=0.346）. The peak value of IOP from 50 μL group （23.25±1.16 mm Hg） was significantly higher than 10 μL and 25 μL groups （all P〈0.05）. Administration of 100 μL microbead solution （23.00±0.93 mm Hg） did not lead to a significant increase in IOP compared to the 50 μL group （P=0.64）. A prolonged elevated IOP duration up to 8wk was achieved by administering two injections of 50 μL microbeads （20.48±1.21 mm Hg vs 13.60±0.90 mm Hg in PBS-injected group; P〈0.05）. The bright-field and TEM were used to assess the changes of retinal

关键词： microbead ocular hypertension optic neuropathy glial fibrillary acidic protein rabbit

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Engineering Yarrowia lipolytica to produce nutritional fatty acids:Current status and future perspectives

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Synthetic and Systems Biotechnology 2022年第4期7卷 1024-1033页

作者： Lizhen Cao Mingxue Yin Tian-Qiong Shi Lu Lin Rodrigo Ledesma-Amaro Xiao-Jun Ji State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNo.30 South Puzhu RoadNanjing211816People’s Republic of China School of Food Science and Pharmaceutical Engineering Nanjing Normal UniversityNo.1 Wenyuan RoadNanjing210046People’s Republic of China Department of Bioengineering and Imperial College centre for Synthetic Biology Imperial College LondonLondonSW72AZUnited Kingdom

Due to their vital physiological functions,nutritional fatty acids have great potential as nutraceutical food supplements for preventing an array of diseases such as inflammation,depression,arthritis,osteoporosis,diabetes and *** biosynthesis of fatty acids follows the trend of sustainable development,as it enables green,environmentally friendly and efficient *** a natural oleaginous yeast,Yarrowia lipolytica is especially well-suited for the production of fatty ***,it has a variety of genetic engineering tools and novel metabolic engineering strategies that make it a robust workhorse for the production of an array of value-added *** this review,we summarize recent advances in metabolic engineering strategies for accumulating nutritional fatty acids in ***,including conjugated fatty acids and polyunsaturated fatty *** addition,the future prospects of nutritional fatty acid production using the *** platform are discussed in light of the current progress,challenges,and trends in this ***,guidelines for future studies are also emphasized.

关键词： Yarrowia lipolytica Metabolic engineering Nutritional fatty acids Conjugated fatty acids Polyunsaturated fatty acids

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Implementation of Capacity Development and Public Awareness for CTBT Verification Regime in Myanmar

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Journal of Energy and Power Engineering 2019年第9期13卷 354-357页

作者： Aye Aye Toe Myat Soe Aung Department of Research and innovation Ministry of EducationNational Analytical LaboratoryDRIYangonMyanmar

Myanmar signed the Comprehensive Nuclear-Test-Ban Treaty(CTBT)in 1996 and ratified it in *** a CTBT ratifying state,Myanmar needs to implement the capability development and public awareness concerning with CTBT verification *** implementing the CTBT verification regime,Myanmar considered the linkage between CTBT and sustainable development goals(SDGs).A National Data centre(NDC)is needed in the country for collecting the data from the stations,differentiating the data quality,prioritizing and storage of the data to conduct with International Data centre(IDC)of Comprehensive Nuclear-Test-Ban Treaty Organization(CTBTO).The seismic,hydroacoustic,infrasound and radionuclide technologies are important for identifying the signals generated by a nuclear *** capacity development and public awareness are important for initial step before the ratification process of the state *** society,change school curriculum,participation in process,organizing workshops and seminars are carried out by policy makers’*** collaboration and citizen awareness are needed to understand the CTBT verification system for monitoring the nuclear explosions in a global *** Atomic Energy Division(AED)will collaborate with external funding agents like CTBTO to improve skill of human resource for NDC implementation in *** scientists,science administrators and representative will be achieved from this national development *** is focused on research and development in areas potentially relevant to the Treaty’s verification regime.

关键词： CTBT verification regime SDGs NDC implementation capacity building public awareness

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