检索结果-南通市图书馆

利用多特征深度学习模型的同震滑坡智能化提取

在线全文

学校读者我要写书评

暂无评论

中国科学：地球科学 2024年第7期54卷 2347-2362页

作者：皇甫文超邱海军崔鹏杨冬冬刘雅唐柄哲刘子敬 mohib ullah 西北大学城市与环境学院西安710127 中国科学院山地灾害与环境研究所成都610041 陕西省地表系统与环境承载力重点实验室西安710127 西北大学地表系统与灾害研究院西安710127

同震滑坡的智能化提取是地震后应急救援和风险评估的重要手段.然而,具有相似光谱特征的道路和裸地等地面物体总是干扰同震滑坡的精准遥感提取,从而使得现有方法难以快速和准确地收集同震滑坡信息并评估其影响.为提高同震滑坡提取的准确... 详细信息

同震滑坡的智能化提取是地震后应急救援和风险评估的重要手段.然而,具有相似光谱特征的道路和裸地等地面物体总是干扰同震滑坡的精准遥感提取,从而使得现有方法难以快速和准确地收集同震滑坡信息并评估其影响.为提高同震滑坡提取的准确度,本研究提出了一种基于多种滑坡识别特征数据集的深度学习模型(ENVINet5_MF)用以自动提取同震滑坡. ENVINet5_MF在构建的过程中结合了滑坡增益指数(LGI),该指数能够扩大同震滑坡与裸地和道路之间的特征差异,有利于消除来自裸地和道路对同震滑坡提取的干扰.利用多时相Planet Scope图像,以日本北海道同震滑坡和中国米林同震滑坡为研究对象,分别在这两个区域进行了同震滑坡智能化提取实验.提取结果和方法性能评估表明ENVINet5_MF取得了比对比方法更加优异的性能,即ENVINet5_MF检测到的同震滑坡与地面参考数据最吻合,并且ENVINet5_MF的精度高于对比方法以及耗时最短.本研究提出的ENVINet5_MF大大提高了同震滑坡提取的准确性,为同震滑坡提取提供了一种高效的方法,可满足同震滑坡灾害的快速响应.

关键词：同震滑坡智能化提取深度学习滑坡增益指数 PlanetScope影像

An update on the maize zein-gene family in the post-genomics era

在线全文

学校读者我要写书评

暂无评论

食物生产加工与营养(英文) 2019年第1期1卷 11-22页

作者： Nasr ullah Khan Mohamed Sheteiwy Ning Lihua Muhammad mohib ullah Khan Zhao Han Institute of Crop Germplasm and Biotechnology Provincial Key Laboratory of AgrobiologyJiangsu Academy of Agricultural SciencesNanjing 210014China Department of Agronomy Faculty of AgricultureMansoura UniversityMansouraEgypt Faculty of Agriculture Gomal UniversityDera Ismail KhanKPPakistan

Maize(Zea mays)is a cereal crop of global food ***,the deficiency of essential amino acids,more importantly lysine,methionine and tryptophan,in the major seed storage zein proteins makes corn nutritionally of low value for human *** idea of improving maize nutritional value prompted the search for maize natural mutants harboring low zein contents and higher amount of *** studies resulted in the identification of more than dozens of maize opaque mutants in the previous few decades,o2 mutant being the most extensively studied ***,the high lysine contents but soft kernel texture and chalky endosperm halted the widespread application and commercial success of maize opaque mutants,which ultimately paved the way for the development of Quality Protein Maize(QPM)by modifying the soft endosperm of o2 mutant into lysine-rich hard *** previous few decades have witnessed a marked progress in maize zein *** includes elucidation of molecular mechanism underlying the role of different zein genes in seed endosperm development by cloning different components of zein family,exploring the general organization,function and evolution of zein family members within maize species and among other cereals,and elucidating the cis-and trans-regulatory elements modulating the regulation of different molecular players of maize seed endosperm *** current advances in high quality reference genomes of maize lines B73 and Mo17 plus the completion of ongoing pan genome sequencing projects of more maize lines with NGS technologies are expected to revolutionize maize zein gene research in near *** review highlights the recent advances in QPM development and its practical application in the post genomic era,genomic and physical composition and evolution of zein family,and expression,regulation and downstream role of zein genes in endosperm ***,recent genomic tools and methods developed for functional valid

关键词： Zein Opaque mutants QPM NGS

Robust Counting in Overcrowded Scenes Using Batch-Free Normalized Deep ConvNet

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

Computer Systems Science & Engineering 2023年第9期46卷 2741-2754页

作者： Sana Zahir Rafi ullah Khan mohib ullah Muhammad Ishaq Naqqash Dilshad Amin ullah Mi Young Lee Institute of Computer Sciences and Information Technology(ICS/IT) The University of AgriculturePeshawar25130Khyber PakhtunkhwaPakistan Department of Convergence Engineering for Intelligent Drone Sejong UniversitySeoul05006Korea Collaborative Robotics and Intelligent Systems(CoRIS)Institute Oregon State UniversityORUSA Department of Software Sejong UniversitySeoul05006Korea

The analysis of overcrowded areas is essential for flow monitoring,assembly control,and *** counting’s primary goal is to calculate the population in a given region,which requires real-time analysis of congested scenes for prompt reactionary *** crowd is always unexpected,and the benchmarked available datasets have a lot of variation,which limits the trained models’performance on unseen test *** this paper,we proposed an end-to-end deep neural network that takes an input image and generates a density map of a crowd *** proposed model consists of encoder and decoder networks comprising batch-free normalization layers known as evolving normalization(EvoNorm).This allows our network to be generalized for unseen data because EvoNorm is not using statistics from the training *** decoder network uses dilated 2D convolutional layers to provide large receptive fields and fewer parameters,which enables real-time processing and solves the density drift problem due to its large receptive *** benchmark datasets are used in this study to assess the proposed model,resulting in the conclusion that it outperforms conventional models.

关键词： Artificial intelligence deep learning crowd counting scene understanding

Serious games in science education:a systematic literature review

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

Virtual Reality & Intelligent Hardware 2022年第3期4卷 189-209页

作者： mohib ullah Sareer Ul AMIN Muhammad MUNSIF Muhammad Mudassar YAMIN Utkurbek SAFAEV Habib KHAN Salman KHAN Habib ullah Department of Computer Science Norwegian University of Science and Technology2815 GjøvikNorway Department of Computer Science Islamia College University Peshawar25000 Pakistan Department of Information Security and Communication Norwegian University of Science and Technology2815 GjøvikNorway Faculty of Science and Technology Norwegian University of Life Sciences1430ÅsNorway

Teaching science through computer games,simulations,and artificial intelligence(AI)is an increasingly active research *** this end,we conducted a systematic literature review on serious games for science education to reveal research trends and *** discussed the role of virtual reality(VR),AI,and augmented reality(AR)games in teaching science subjects like ***,we covered the research spanning between 2011 and 2021,investigated country-wise concentration and most common evaluation methods,and discussed the positive and negative aspects of serious games in science education in particular and attitudes towards the use of serious games in education in general.

关键词： Serious games Simulations,Artificial intelligence,Virtual reality,Augmented reality Games in education

中巴经济走廊洪扎段潜在滑坡SBAS-InSAR早期识别及发育特征分析

在线全文

学校读者我要写书评

暂无评论

遥感学报 2024年第4期28卷 885-899页

作者：苏晓军张毅孟兴民 Rehman mohib Ur Khalid Zainab 赵富萌岳东霞郭富赟周自强兰州大学资源环境学院兰州730000 兰州大学地质科学与矿产资源学院兰州730000 甘肃省环境地质与灾害防治技术创新中心兰州730000 兰州大学西部环境教育部重点实验室兰州730000 甘肃省地质环境监测院兰州730050 甘肃省科学院地质自然灾害防治研究所兰州730000

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究... 详细信息

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究。本研究基于升、降轨获取的87景哨兵一号(Sentinel-1)数据,利用SBAS-InSAR技术获取了洪扎河谷地表形变,计算了地表斜坡向形变速率。并综合利用光学遥感影像解译和野外实地调查验证,成功识别了洪扎河谷53处潜在滑坡,并讨论了滑坡识别效果,对Ghulmet和Humarri两个典型大型滑坡监测形变、影像解译和验证特征进行了分析。在此基础上,选取11个地形地质环境因素作为影响滑坡发育的因子,分析了滑坡分布发育特征。结果表明,升轨和降轨数据监测到研究区内斜坡向最大形变速率分别为−311 mm/a和−490 mm/a,洪扎河谷区不稳定形变阈值为−20 mm/a。大型滑坡受河流侵蚀作用,形变剧烈,次级滑坡发育。识别的潜在滑坡主要集中在河流两岸、公路上下边坡;潜在滑坡主要分布在风化堆积层以及千枚岩、板岩等变质岩区;高差200—1000 m、坡度30°—40°和坡向南、南西向为滑坡发育的优势地形条件;斜坡地表裸露、植被稀疏地段(NDVI<0.2)物源充足,滑坡较为发育。研究结果可用于巴基斯坦洪扎河谷防灾减灾工作,保障中巴经济走廊畅通运营,为具有毁路与堵江风险的滑坡重点监测和评价研究提供科学参考和数据支持。

关键词：中巴经济走廊洪扎河谷滑坡 SBAS-InSAR 地表形变早期识别发育特征

Three-dimensional Numerical Study of Laminar Confined Slot Jet Impingement Cooling using Slurry of Nano—encapsulated Phase Change Material

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2016年第5期25卷 431-439页

作者： M.mohib Ur Rehman Z.G Qu R.P.Fu Key Laboratory of Thermal Fluid Science and Engineering Ministry of EductionSchool of Energy and Power EngineeringXi'an Jiaotong University

This Article presents a three dimensional numerical model investigating thermal performance and hydrodynamics features of the confined slot jet impingement using slurry of Nano Encapsulated Phase Change Material(NEPCM)as a *** slurry is composed of water as a base fluid and n-octadecane NEPCM particles with mean diameter of 100 nm suspended in it.A single phase fluid approach is employed to model the NEPCM *** thermo physical properties of the NEPCM slurry are computed using modern approaches being proposed recently and governing equations are solved with a commercial Finite Volume based *** effects of jet Reynolds number varying from 100 to 600 and particle volume fraction ranging from 0% to 28% are *** computed results are validated by comparing Nusselt number values at stagnation point with the previously published results with water as working *** was found that adding NEPCM to the base fluid results with considerable amount of heat transfer *** highest values of heat transfer coefficients are observed at H/W=4 and C_m=***,due to the higher viscosity of slurry compared with the base fluid,the slurry can produce drastic increase in pressure drop of the system that increases with NEPCM particle loading and jet Reynolds number.

关键词： Nano-encapsulated phase change material heat transfer enhancement confined slot jet impingement

Vegetation-environment relationship in conifer dominating forests of the mountainous range of Indus Kohistan in northern Pakistan

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2020年第8期17卷 1989-2000页

作者： Adam KHAN Moinuddin AHMED Muhammad Faheem SIDDIQI mohib SHAH Eduardo Soares CALIXTO Afsheen KHAN Paras SHAH Javed IQBAL Muhammad AZEEM Department of Botany University of BunerSwari 19290Pakistan Dr.Moinuddin Ahmed Research Laboratory of Dendrochronology and Plant Ecology Department of Botany FederalUrdu University of ArtsScience and Technology Gulshan-e-Iqbal campus KarachiKarachi 75300Pakistan Department of Botany University of Karachi Karachi 75270Pakistan Department of Botany Abdul Wali Khan University MardanMardan 23200Pakistan Department of Entomology University of Sao PauloRibeirao PretoRibeirao Preto 14040-900Brazil Dr.Abdul Ghaffar laboratory of Plant Pathology and Aerobiology Department of BotanyFederal Urdu University ofArtsScience and Technology Gulshan-e-Iqbal campus KarachiKarachi 75300Pakistan

Environmental variables play a crucial role in shaping vegetation structure,mainly in mountainous *** studies have attempted to identify the environment-vegetation relationship of Conifer Dominating Forests(CDF)***,due to differences in local climate and soil composition,different environmental drivers can be *** applying multivariate analysis techniques,this study investigated the vegetation-environment relationship of CDF of Indus Kohistan in northern *** results showed that CDF of Indus Kohistan are distributed in five distinct ecological groups,which are dominated by different trees and understory species.A total of 7 trees and 71 understory species were recorded from the sampling *** deodara was the leading species among four groups,having the highest importance value(IV),density and basal *** I was dominated by Pinus wallichiana with the second highest importance value,density and basal *** addition,elevation,slope,maximum water holding capacity(MWHC),soil moisture(SM),total organic matter(TOM),sodium,phosphorus and nickel showed highly significant influence on composition and distribution pattern of Indus Kohistan ***,this study shows a new evidence of vegetation-environment relationship,pointing out specific drivers of vegetation structure in CDF of Indus Kohistan region in northern Pakistan.

关键词： Conifer forests Understory species Environmental variables Multivariate analysis Indus Kohistan Northern Pakistan

Landslide mapping and analysis along the China-Pakistan Karakoram Highway based on SBAS-InSAR detection in 2017

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2021年第10期18卷 2540-2564页

作者： SU Xiao-jun ZHANG Yi MENG Xing-min YUE Dong-xia MA Jin-hui GUO Fu-yun ZHOU Zi-qiang REHMAN mohib Ur KHALID Zainab CHEN Guan ZENG Run-qiang ZHAO Fu-meng College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China School of Earth Sciences Lanzhou UniversityLanzhou 730000China Gansu Tech Innovation Centre for Environmental Geology and Geohazard Prevention Lanzhou 730000China Geological Environment Monitoring Institute of Gansu Province Lanzhou 730050China Institute of Geological Hazards Prevention Gansu Academy of SciencesLanzhou 730000China

The Karakoram Highway(KKH),a part of the China–Pakistan Economic Corridor(CPEC),is a major highway connecting northern Pakistan to *** inventorying and analysis of landslides along KKH are challenging because of poor accessibility,vast study area,limited availability of ground-based datasets,and the complexity of landslide processes in the *** order to preserve life,property,and infrastructure,and to enable the uninterrupted and efficient operation of the KKH,it is essential to strengthen measures for the prevention and control of geological *** the present study,SBASInSAR(Small Baseline Subsets-Interferometric Synthetic Aperture Radar)was used to process 150 scenes of Sentinel 1-A images in the year 2017 along the Karakoram Highway.A total of 762 landslides,including 57 complex landslides,126 rock falls,167 debris slides,and 412 unstable slopes,ranging in size between 0.0017 and 10.63 km2 were ***,this study also gains an inventory of 40 active glacier movements in this *** categorization,displacements characteristics,spatial distribution,and their relationship with various contributing factors have been successfully investigated along the entire KKH using image interpretation and frequency-area *** criteria adopted for landslides categorization is presented in the *** results showed that the 2-D ground deformation derived in Hunza valley echoes well with the general regional landslides *** spatial distribution analysis revealed that there are clumped distributions of landslides in the Gaizi,Tashkurgan,and Khunjerab in China,as well as in Hunza valley,and north of Chilas city in *** results indicated that these landslides mainly occur on south-facing slopes with a slope angle of 20°–45°and elevation relief of 550–2,100 *** development is also related to low vegetation cover and weathering effects in mountain ***,our study provides scientific data

关键词： Landslides mapping Slope deformation Identification Landslide development Area development ratio SBAS-InSAR Karakoram Highway

Multivariate Based Variability within Diverse Indian Mustard (<i>Brassica juncea</i>L.) Genotypes

在线全文

学校读者我要写书评

暂无评论

Open Journal of Genetics 2017年第2期7卷 69-83页

作者： Noor Saleem Sohail Ahmad Jan Muahmmad Jawaad Atif Haris Khurshid Shahid Ali Khan mohib Abdullah Muhammad Jahanzaib Humair Ahmed Syed Farman ullah Azhar Iqbal Sameena Naqi Muhammad Ilyas Naushad Ali Malik Ashiq Rabbani The University of Haripur KPK Pakistan Plant Genetic Resources Institute (PGRI) National Agricultural Research Centre (NARC) Islamabad Pakistan Department of Biotechnology Quaid-i-Azam University Islamabad Pakistan Oilseeds Research Program NARC Islamabad Pakistan School of Crop Production Technology Suranaree University of Technology Nakhon Ratchasima Thailand Land Resources Research Institute NARC Islamabad Pakistan Department of Plant Breeding and Genetics PMAS-Arid Agriculture University Rawalpindi Pakistan

Indian mustard (Brassica juncea L.) germplasm consisting 167 accessions including one check cultivar was evaluated for qualitative and quantitative traits. The present study was conducted to investigate genetic diversity and correlation among studied genotypes of B. juncea L. based on agro-morphological at NARC, Islamabad, Pakistan. To investigate the genetic diversity based on morphological characters, data was recorded on 20 quantitative and 12 qualitative traits. The calculated data was analyzed through two complementary methods, i.e. PCA (Principal Component Analysis) and cluster analysis. Among all the studied cultivars, significant diversity was recorded for different agro-morphological characters. Among all the parameters, maximum variance was recorded for pod shattering (427.2) followed by plant height (345.6), days to 100% flowering (336.2) and main raceme length (210.0). Among all the characters, the greatest and highly significant association (0.99) was found between days to maturity 50% and days to maturity 100% followed by correlation (0.86) among days to flowering 50% and days to flowering 100%, correlation value (0.71) was calculated among leaf length and leaf width. Using cluster analysis all the genotypes were divided into five major groups. It was observed that 7 out of 20 principal components with an Eigen value of ≥1.0 calculated for 73.92% of the total diversity observed between 167 accessions of Indian mustard (B. juncea L.). The contribution of first three PCs in the total PCs was 23.25, 12.87 and 11.24, respectively. Among all the investigated accessions two genotypes 26,813 and 26,817 showed great potential for seeds/silique, 1000-seed weight and seed yield/plant, respectively, so these genotypes are recommended for future breeding programs for achieving promising results.

关键词： Genetic Diversity Agro-Morphology Brassica juncea L. PCA Analysis