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Effective plant discrimination based on the combination of local binary pattern operators and multiclass support vector machine methods

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Information Processing in Agriculture 2019年第1期6卷 116-131页

作者： Vi Nguyen Thanh Le Beniamin Apopei kamal Alameh Edith Cowan University–Electron Science Research Institute Australia

Accurate crop and weed discrimination plays a critical role in addressing the challenges of weed management in *** use of herbicides is currently the most common approach to weed ***,herbicide resistant plants have long been recognised as a major concern due to the excessive use of *** weed detection techniques can reduce the cost of weed management and improve crop quality and yield.A computationally efficient and robust plant classification algorithm is developed and applied to the classification of three crops:Brassica napus(canola),Zea mays(maize/corn),and *** developed algorithm is based on the combination of Local Binary Pattern(LBP)operators,for the extraction of crop leaf textural features and Support vector machine(SVM)method,for multiclass plant *** paper presents the first investigation of the accuracy of the combined LBP algorithms,trained using a large dataset of canola,radish and barley leaf images captured by a testing facility under simulated field *** dataset has four subclasses,background,canola,corn,and radish,with 24,000 images used for training and 6000 images,for *** dataset is referred herein as "bccr-segset"and published *** each subclass,plant images are collected at four crop growth ***,the algorithm demonstrates plant classification accuracy as high as 91.85%,for the four classes.

关键词： Plant discrimination Classification LBP PCA and SVM

Clinical profile,etiology,management and outcome of empyema thoracis associated with COVID-19 infection:A systematic review of published case reports

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Asian Pacific Journal of Tropical Medicine 2023年第8期16卷 337-346页

作者： Yasser Ali kamal Seham Abdelwakeel Abdel-Gaber Department of Cardiothoracic Surgery Faculty of MedicineMinia UniversityEl-MinyaEgypt Department of Medical Pharmacology Faculty of MedicineMinia UniversityEl-MinyaEgypt

Objective:To explore the clinical features,diagnosis,etiology,treatment,and outcomes of COVID-19 related ***:Using PRISMA statement,a systematic search of relevant case reports published between December 2019 and April 2023 was performed through seven *** collected data included demographics,clinical manifestations,diagnostic findings,treatment,and ***:Thirty-six case reports were identified with 43 cases of *** included cases had a median age of 55 years(range:12-78 years)and 79.1%(34/43)were *** majority of cases presented during hospitalization for management of acute COVID-19 infection(29/43,67.4%)and Charlson comorbidity index<3(40/43,93.0%).Pseudomonas aeruginosa was the most commonly isolated microorganism from the pleural fluid(9/43,20.9%)and 16.3%of the cases(7/43)had polymicrobial *** drainage was performed in all cases while surgery was indicated in 24 cases(55.8%).The most common complication of COVID-19-related empyema was broncho-pleural fistula(2/43,4.7%).The mortality rate was 23.3%(10/43).Sepsis and/or multi-organ failure were the most commonly reported causes of *** univariate analysis,no statistically significant risk factor for mortality was ***:COVID-19-associated empyema has a variety of predisposing factors,time of presentation,clinical features,and causative *** or minimally invasive surgical procedures are performed more frequently than isolated chest *** in COVID-19 patients worsens their prognosis and can lead to serious complications.

关键词： COVID-19 SARS-CoV-2 Empyema Microbiology Thoracic surgery

Temperature Dependency of Dynamic Mechanical Properties of Cement Asphalt Paste by DMTA Method

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Journal of Wuhan University of Technology(Materials Science) 2017年第6期32卷 1379-1387页

作者：方雷 YUAN Qiang PAN Yunrui WANG Yong KHAYAT kamal 邓德华 School of Civil Engineering National Engineering Laboratory for Construction of High Speed Railway Central South UniversityChangsha 410075 China Department of Civil Architectural and Environmental Engineering Missouri University of Science and Technology Rolla MO United States

We investigated the temperature dependency of the dynamic mechanical properties of cement asphalt paste by the dynamic mechanical thermal analysis（DMTA） method. The experimental results show that the dynamic mechanical properties of cement asphalt pastes are sensitive to temperature due to the inclusion of asphalt, and may go through different states within a temperature range of-40 ℃ to 60 ℃, which is different from that of pure cement and asphalt. As the temperature of the cement asphalt paste increases, a considerable change of dynamic mechanical properties, including storage modulus（E＇）, loss modulus（E＇＇） and loss factor（tand） is observed. Moreover, the influence of asphalt to cement（A/C） ratio on the temperature sensitivity of the dynamic mechanical properties of cement asphalt composites was investigated. The temperature dependency of cement asphalt composites is ascribed to the temperature dependency of the asphalt and its interaction with cement paste. A simple fractional model is proposed to describe the viscoelastic behavior of cement asphalt composites.

关键词： cement asphalt paste dynamic mechanical property dynamic mechanical thermal analysis viscoelastic model

Efficiently searching extreme mechanical properties via boundless objective-free exploration and minimal first-principles calculations

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npj Computational Materials 2022年第1期8卷 1336-1347页

作者： Joshua Ojih Mohammed Al-Fahdi Alejandro David Rodriguez kamal Choudhary Ming Hu Department of Mechanical Engineering University of South CarolinaColumbiaSC29208USA Materials Science and Engineering Division National Institute of Standards and TechnologyGaithersburgMD20899USA

Despite the machine learning(ML)methods have been largely used recently,the predicted materials properties usually cannot exceed the range of original training *** deployed a boundless objective-free exploration approach to combine traditional ML and density functional theory(DFT)in searching extreme material *** combination not only improves the efficiency for screening large-scale materials with minimal DFT inquiry,but also yields properties beyond original training *** use Stein novelty to recommend outliers and then verify using *** data are then added into the training dataset for next round *** test the loop of training-recommendation-validation in mechanical property *** screening 85,707 crystal structures,we identify 21 ultrahigh hardness structures and 11 negative Poisson’s ratio *** algorithm is very promising for future materials discovery that can push materials properties to the limit with minimal DFT calculations on only~1%of the structures in the screening pool.

关键词： extreme properties minimal

A Simulation of the Flight Characteristics of the Deployable Hindwings of Beetle

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Journal of Bionic Engineering 2017年第2期14卷 296-306页

作者： Jiyu Sun Ruijuan Du Xiaofeng Liu kamal Bechkoum Jin Tong Donghui Chen Key Laboratory of Bionic Engineering (Ministry of Education) Jilin University Changchun 130022 China Flight Research Institute Aviation University of Air Force Changchun 130025 China School of Computing and Technology Gloucestershire University Cheltenham GL50 2HR UK

An insect is an excellent biological object for the bio-inspirations to design and develop a MAV. This paper presents the simulation study of the flight characteristics of the deployable hindwings of beetle, Dorcustitanus platymelus. A 3D geometric model of the beetle was obtained using a 3D laser scanning technique. By studying its hindwings and flight mechanism, the mathematical model of the flapping motion of its hindwings was analyzed. Then a simulation analysis was carried out to analyze and evaluate the flapping flying aerodynamic characteristics. After that, the flow of blood in the hindwing veins was studied through simulation to determine the maximum pressure on a vein surface and the minimum blood flow in flight. A number of interesting bio-inspirations were obtained. It is believed that these findings can be used for the design and development of a MAV with similar flying capabilities to a natural beetle.

关键词： flapping aerodynamic characteristics deployable hindwings beetle bio-inspiration

Care4U: Integrated healthcare systems based on blockchain

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Blockchain(Research and Applications) 2023年第4期4卷 2-13页

作者： Randa kamal Ezz El-Din Hemdan Nawal El-Fishway Department of Computer Science and Engineering Faculty of Electronic EngineeringMenoufia UniversityEgypt

During the COVID-19 crisis, the need to stay at home has increased dramatically. In addition, the number of sickpeople, especially elderly persons, has increased exponentially. In such a scenario, home monitoring of patientscan ensure remote healthcare at home using advanced technologies such as the Internet of Medical Things (IoMT).The IoMT can monitor and transmit sensitive health data;however, it may be vulnerable to various attacks. In thispaper, an efficient healthcare security system is proposed for IoMT applications. In the proposed system, themedical sensors can transmit sensed encrypted health data via a mobile application to the doctor for ***, three consortium blockchains are constructed for load balancing of transactions and reducing transactionlatency. They store the credentials of system entities, doctors' prescriptions and recommendations according to thedata transmitted via mobile applications, and the medical treatment process. Besides, cancelable biometrics areused for providing authentication and increasing the security of the proposed medical system. The investigationalresults show that the proposed system outperforms existing work where the proposed model consumed lessprocessing time by values of 18%, 22%, and 40%, and less energy for processing a 200 KB file by values of 9%,13%, and 17%. Finally, the proposed model consumed less memory usage by values of 7%, 7%, and 18.75%. Fromthese results, it is clear that the proposed system gives a very reliable and secure performance for efficientlysecuring medical applications.

关键词： Healthcare Blockchain Cyber security Internet of things Internet of Medical Things Cancelable biometrics

Impacts of tourism development on the physical environment of Mussoorie,a hill station in the lower Himalayan range of India

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Journal of Mountain Science 2018年第10期15卷 2276-2291页

作者： Sangeeta SUNDRIYAL Vijay SHRIDHAR Sandeep MADHWAL kamal PANDEY Vikram SHARMA School of Environment&Natural Resources Doon UniversityDehradun-248001UtturakhandIndia Indian Institute of Remote Sensing Dehradun-248001UttarakhandIndia

Tourism in mountainous regions is a significant source of revenue generation. However, it has also been associated with many adverse environmental consequences. This study aims at assessing the negative impacts of the incessant upsurge in tourism development on the physical environment of Mussoorie, a well-known mountain tourist destination in India. The impact indicators for the region were identified and assessed by qualitative and quantitative analysis of field observations. The observations indicated the aggravation of traffic congestion, atmospheric pollution, undisposed solid waste, water scarcity and infrastructure unavailability as the prevalent issues, especially during the peak tourist months. The extent of the consequential damage to the environment was evaluated by conducting an assessment of tourism-induced human disturbance on the natural landscape of the town. Slope, slope aspect, vegetation cover, road network and drainage network were incorporated as thedetermining landscape attributes to prepare thematic maps of landscape quality(perceivable intrinsic properties) and landscape fragility(vulnerability to anthropogenic disturbances) using GIS technique. An absorption capacity map was finally prepared to characterize the study area into regions of different conservation needs. The results identified the need for planning appropriate preservation strategies for different tourist places in the town. The study can be used by the policy makers for implementing the regulatory measures against potential disturbances due to mass-tourism.

关键词： Absorption capacity Analytical Hierarchy Process Geographic Information System Human interventions Landscape assessment Mountain Tourism Destination

An Innovative Approach Utilizing Binary-View Transformer for Speech Recognition Task

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Computers, Materials & Continua 2022年第9期72卷 5547-5562页

作者： Muhammad Babar kamal Arfat Ahmad Khan Faizan Ahmed Khan Malik Muhammad Ali Shahid Chitapong Wechtaisong Muhammad Daud kamal Muhammad Junaid Ali Peerapong Uthansakul COMSATS University Islamabad Islamabad Campus45550Pakistan Suranaree University of Technology Nakhon Ratchasima30000Thailand COMSATS University Islamabad Lahore Campus54000Pakistan COMSATS University Islamabad Vehari Campus61100Pakistan National University of Sciences&Technology Islamabad45550Pakistan Virtual University of Pakistan Islamabad Campus45550Pakistan

The deep learning advancements have greatly improved the performance of speech recognition systems,and most recent systems are based on the Recurrent Neural Network(RNN).Overall,the RNN works fine with the small sequence data,but suffers from the gradient vanishing problem in case of large *** transformer networks have neutralized this issue and have shown state-of-the-art results on sequential or speech-related ***,in speech recognition,the input audio is converted into an image using Mel-spectrogram to illustrate frequencies and *** image is classified by the machine learning mechanism to generate a classification ***,the audio frequency in the image has low resolution and causing inaccurate *** paper presents a novel end-to-end binary view transformer-based architecture for speech recognition to cope with the frequency resolution ***,the input audio signal is transformed into a 2D image using ***,the modified universal transformers utilize the multi-head attention to derive contextual information and derive different speech-related ***,a feedforward neural network is also deployed for *** proposed system has generated robust results on Google’s speech command dataset with an accuracy of 95.16%and with minimal *** binary-view transformer eradicates the eventuality of the over-fitting problem by deploying a multiview mechanism to diversify the input data,and multi-head attention captures multiple contexts from the data’s feature map.

关键词： Convolution neural network multi-head attention multi-view RNN self-attention speech recognition transformer

炭纤维/氨基化多壁碳纳米管/环氧树脂复合材料力学性能的分子模拟( 英文)

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新型炭材料 2014年第2期29卷 132-142页

作者： kamal Sharma Mukul Shukla Mechanical Engineering Department Motilal Nehru National Institute of Technology Allahabad Uttar Pradesh 211004 India Department of Mechanical Engineering Technology University of Johannesburg Johannesburg South Africa

采用分子动力学模拟(MD)分析炭纤维/氨基化多壁碳纳米管/环氧树脂复合材料的力学性能。采用碳纳米管作为环氧树脂的主要增强材料以期提高三相复合材料的力学性能。建立固化的环氧树脂模型以提高碳纳米管和基体间的粘结强度。炭纤维体积... 详细信息

采用分子动力学模拟(MD)分析炭纤维/氨基化多壁碳纳米管/环氧树脂复合材料的力学性能。采用碳纳米管作为环氧树脂的主要增强材料以期提高三相复合材料的力学性能。建立固化的环氧树脂模型以提高碳纳米管和基体间的粘结强度。炭纤维体积分数设定为60%,碳纳米管体积分数为0.25%-5%。结果表明,碳纳米管体积分数从0.25%增加至5%时,沿炭纤维方向上的杨氏模量由92GPa提高至224.4GPa,抗张强度由1.35GPa提高至2.85GPa。

关键词：炭纤维分子模拟三相碳纳米管力学性能