检索结果-南通市图书馆

A Convolutional Neural Network Model for Wheat Crop Disease Prediction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第5期75卷 3867-3882页

作者： Mahmood Ashraf Mohammad Abrar Nauman Qadeer abdulrahman A.Alshdadi Thabit Sabbah Muhammad Attique Khan Department of Computer Science and Artificial Intelligence College of Computer Science and EngineeringUniversity of JeddahJeddah21577Saudi Arabia Department of Computer Science Bacha Khan University CharsaddaKhyber Pakhtunkhwa24461Pakistan Department of Computer Science Federal Urdu University of ArtsScience&TechnologyIslamabad45570Pakistan Department of Information Systems and Technology College of Computer Science and EngineeringUniversity of JeddahJeddah21577Saudi Arabia Faculty of Technology and Applied Sciences Al-Quds Open UniversityAl-Bireh1804Palestine Department of Computer Science HITEC UniversityTaxila47080Pakistan

Wheat is the most important cereal crop,and its low production incurs import pressure on the *** fulfills a significant portion of the daily energy requirements of the human *** wheat disease is one of the major factors that result in low production and negatively affects the national ***,timely detection of wheat diseases is necessary for improving *** CNN-based architectures showed tremendous achievement in the image-based classification and prediction of crop ***,these models are computationally expensive and need a large amount of training *** this research,a light weighted modified CNN architecture is proposed that uses eight layers particularly,three convolutional layers,three SoftMax layers,and two flattened layers,to detect wheat diseases *** high-resolution images were collected from the fields in Azad Kashmir(Pakistan)and manually annotated by three human *** convolutional layers use 16,32,and 64 *** filter uses a 3×3 kernel *** strides for all convolutional layers are set to *** this research,three different variants of datasets are *** variants S1-70%:15%:15%,S2-75%:15%:10%,and S3-80%:10%:10%(train:validation:test)are used to evaluate the performance of the proposed *** extensive experiments revealed that the S3 performed better than S1 and S2 datasets with 93%*** experiment also concludes that a more extensive training set with high-resolution images can detect wheat diseases more accurately.

关键词： Machine learning wheat crop disease prediction convolutional neural network artificial intelligence

The Impact of Strategic HRM Practices and Their Role in Developing Competitive Advantage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Impact of Strategic HRM Practices and Their Role in Deve...

作者： Ahmed abdulrahman Saeed Rashed Alshaibani 山东大学

学位级别：硕士

变幻莫测的激烈竞争加剧了组织内部人力投资的地位。本文论述了战略人力资源管理方面(SHRM)在也门IT企业中的作用,因为这是企业竞争优势的潜在来源。社会化和培训实践加强了人力资源实践,进而创造竞争优势。人力行为也是竞争优势的来源... 详细信息

变幻莫测的激烈竞争加剧了组织内部人力投资的地位。本文论述了战略人力资源管理方面(SHRM)在也门IT企业中的作用,因为这是企业竞争优势的潜在来源。社会化和培训实践加强了人力资源实践,进而创造竞争优势。人力行为也是竞争优势的来源,通过员工绩效获得的知识反映在组织的收入中。在进行了所需的数据检验之后,也门的IT公司证明战略人力资源管理会影响组织绩效。他们认识到员工在改变公司和通过SHRM提供竞争优势方面的重要性。因此,组织通过培训来支持员工并激励他们发展技能,这反映在组织绩效的改进上。本研究采用问卷调查的方法,并通过SPSS对问卷调查结果进行分析,研究样本数量为100个,分布在也门技术领域的三家公司(电信和信息技术公司和NATCO集团)中。问卷包含三个主要变量:自变量、因变量和调节变量。

关键词：战略人力资源管理人力资源管理人力资源竞争优势组织绩效

Automated Deep Learning Based Melanoma Detection and Classification Using Biomedical Dermoscopic Images

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第2期74卷 2443-2459页

作者： Amani abdulrahman Albraikan Nadhem NEMRI Mimouna Abdullah Alkhonaini Anwer Mustafa Hilal Ishfaq Yaseen Abdelwahed Motwakel Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Systems College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Department of Computer Science College of Computer and Information SciencesPrince Sultan UniversitySaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia

Melanoma remains a serious illness which is a common formof skin *** the earlier detection of melanoma reduces the mortality rate,it is essential to design reliable and automated disease diagnosis model using dermoscopic *** recent advances in deep learning(DL)models find useful to examine the medical image and make proper *** this study,an automated deep learning based melanoma detection and classification(ADL-MDC)model is *** goal of the ADL-MDC technique is to examine the dermoscopic images to determine the existence of *** ADL-MDC technique performs contrast enhancement and data augmentation at the initial ***,the k-means clustering technique is applied for the image segmentation *** addition,Adagrad optimizer based Capsule Network(CapsNet)model is derived for effective feature extraction ***,crow search optimization(CSO)algorithm with sparse autoencoder(SAE)model is utilized for the melanoma classification *** exploitation of the Adagrad and CSO algorithm helps to properly accomplish improved performance.A wide range of simulation analyses is carried out on benchmark datasets and the results are inspected under several *** simulation results reported the enhanced performance of the ADL-MDC technique over the recent approaches.

关键词： Biomedical images dermoscopic images deep learning melanoma detection machine learning

Evaluation of antidiabetic activity of plants used in Western Sudan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2015年第5期5卷 395-402页

作者： Maha abdulrahman Alamin Ahmed Ibrahim Yagi Sakina Mohamed Yagi Botany Department Faculty of Science University of Khartoum Department of Pharmacology and Toxicology College of Pharmacy King Saud University Department of Biological Science and Chemistry University of Nizwa

Objective: To investigate the traditional antidiabetic uses of some indigenous Sudanese plants on streptozotocin-induced diabetes rats. Methods: Diabetic rats were treated with a 400 mg/kg dose of aqueous extracts of five plant species orally for 2 h(acute) or 14 days(chronic). In acute model blood glucose levels were monitored at specific intervals. In the chronic model blood samples were collected from overnight fasted diabetic rats on day 15 to estimate blood glucose level. And the body weight, serum lipid profile and activities of liver and kidney enzymes were measured. Histopathological observations of liver sections were also ***: In the case of acute treatment, aqueous extracts of Tinospora bakis(T. bakis), Nauclea latifolia(N. latifolia) and Randia nilotica(R. nilotica) at 400 mg/kg significantly lowered(P < 0.05) blood glucose levels in diabetic rats whereas, chronic treatment of diabetic rats with 400 mg/kg of T. bakis, N. latifolia, R. nilotica and Mitragyna inremis proved to have significant(P < 0.05) antihyperglycemic effect and have the capacity to correct the metabolic disturbances associated with diabetes. Histopathological studies showed that the aqueous extracts of these four plants reinforced the healing of liver. However, Striga hermonthica aqueous extract did not exert any antihyperglycemic effect to diabetic rats. Conclusions: This study demonstrated that T. bakis, N. latifolia, R. nilotica and Mitragyna inremis have therapeutic value in diabetes and related complications and thus supporting the traditional uses of these plants in Sudanese traditional medicine.

关键词： Tinospora bakis Mitragyna inremis Nauclea latifolia Randia nilotica Striga hermonthica Antihyperglycemic effect

Significance of thermal stress in a convectiveradiative annular fin with magnetic field and heat generation: application of DTM and MRPSM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Propulsion and Power Research 2022年第4期11卷 527-543页

作者： Ganeshappa Sowmya Fehmi Gamaoun Amal abdulrahman Ravikumar Shashikala Varun Kumar Ballajja Chandrappa Prasannakumara Department of Mathematics M S Ramaiah Institute of TechnologyBangalore-560054Karnataka560070India Department of Mechanical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Chemistry College of Science King Khalid UniversityAbha61421Saudi Arabia Department of Studies in Mathematics Davangere UniversityDavangereKarnataka577002India

The present paper explains the temperature attribute of a convective-radiative rectangular profiled annular fin with the impact of magnetic *** effect of thermal radiation,convection,and magnetic field on thermal stress distribution is also studied in this *** governing energy equation representing the steady-state heat conduction,convection,and radiation process is transformed into its dimensionless nonlinear ordinary differential equation(ODE)with corresponding boundary conditions using non-dimensional *** obtained ODE is then solved analytically by employing the Pade approximant-differential transform method(DTM)and modified residual power series method(MRPSM).Moreover,the important characteristics of the temperature field,the thermal stress,and the impact of some nondimensional parameters are inspected graphically,and a physical explanation is provided to aid in *** significant findings of the investigation reveal that temperature distribution enhances with an increase in the magnitude of the heat generation parameter and thermal conductivity parameter,but it gradually decreases with an increment of convectiveconductive parameter,Hartmann number,and radiative-conductive *** thermal stress distribution of the fin varies considerably in the applied magnetic field effect.

关键词： Annular fin Differential transform method(DTM) Magnetic field Modified residual power series method(MRPSM) Radiative heat transfer

Prognostic significance of peritoneal metastasis from colorectal cancer treated with first-line triplet chemotherapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第8期10卷 2429-2438页

作者： Shouki Bazarbashi abdulrahman Alghabban Mohamed Aseafan Ali H Aljubran Ahmed Alzahrani Tusneem AM Elhassan Oncology Center King Faisal Specialist Hospital&Research CenterRiyadh 11211RiyadhSaudi Arabia

BACKGROUND Peritoneal metastasis from colorectal cancer(CRC)carries a poor prognosis in most *** majority of those studies used either a single-agent or doublet chemotherapy regimen in the first-line *** To investigate the prognostic significance of peritoneal metastasis in a cohort of patients treated with triplet chemotherapy in the first-line *** We retrospectively evaluated progression-free survival(PFS)and overall survival(OS)in 51 patients with metastatic CRC treated in a prospective clinical trial with capecitabine,oxaliplatin,irinotecan,and bevacizumab in the first-line setting according to the presence and absence of peritoneal ***,univariate and multivariate analyses for PFS and OS were performed to assess the prognostic significance of peritoneal metastasis at the multivariate *** Fifty-one patients were treated with the above triplet *** had peritoneal *** patient characteristics of both groups showed a significant difference in the sidedness of the primary tumor(left-sided primary tumor in 60%of the peritoneal group vs 86%in the nonperitoneal group,P=0.03)and the presence of liver metastasis(40%for the peritoneal group vs 75%for the nonperitoneal group,P=0.01).Univariate analysis for PFS showed a statistically significant difference for age less than 65 years(P=0.034),presence of liver metastasis(P=0.046),lung metastasis(P=0.011),and those who underwent metastasectomy(P=0.001).Only liver metastasis and metastasectomy were statistically significant for OS,with P values of 0.001 and 0.002,*** analysis showed that age(less than 65 years)and metastasectomy were statistically significant for PFS,with P values of 0.002 and 0.001,*** the other hand,the absence of liver metastasis and metastasectomy were statistically significant for OS,with P values of 0.003 and 0.005,*** Peritoneal metastasis in patients with metastatic CRC tre

关键词： Colorectal cancer Peritoneal carcinomatosis Triplet chemotherapy Survival Prognostic factors Metastasectomy

Linear Active Disturbance Rejection Control with a Fractional-Order Integral Action

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第11期73卷 3057-3079页

作者： Maâmar Bettayeb Rachid Mansouri Ubaid M.Al-Saggaf abdulrahman U.Alsaggaf Mohammed Moinuddin Electrical Engineering Department University of SharjahUnited Arab Emirates L2CSP Laboratory University Mouloud Mammeri of Tizi-OuzouAlgeria Center of Excellence in Intelligent Engineering Systems(CEIES) King Abdulaziz UniversityJeddahSaudi Arabia Electricaland Computer Engineering Department King Abdulaziz UniversityJeddahSaudi Arabia

Linear active disturbance rejection control(LADRC)is a powerful control structure thanks to its performance in uncertainties,internal and external disturbances estimation and *** extended state observer(ESO)based controller is the key to the LADRC *** this article,the LADRC scheme combined with a fractional-order integral action(FOILADRC)is proposed to improve the robustness of the standard *** the robust closed-loop Bode’s ideal transfer function(BITF),an appropriate pole placement method is proposed to design the set-point tracking controller of the FOI-LADRC *** simulations and experimental results on a cart-pendulum system will illustrate the effectiveness of the proposed FOI-LADRC scheme for the disturbance rejection,the set-point tracking and the improved *** illustrate the LADRC control schemes and to verify the performance of the proposed FOI-LADRC,compared to the standard LADRC and IOI-LADRC structures,two tests will be carried ***,simulation tests on an academic example will be presented to show the effect of the different parameters of the control law on the performance of the closed-loop ***,these three control structures are implemented on an experimental test bench,the cart-pendulum system,to show their efficiency and to show the superiority of the proposed method compared to the two other structures.

关键词： Fractional calculus active disturbance rejection control pole placement cart-pendulum system robust control

Predicting groundwater level of wells in the Diyala River Basin in eastern Iraq using artificial neural network

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 Groundwater Science and Engineering 2020年第1期8卷 87-96页

作者： abdulrahman Th Mohammad Qassem H Jalut Nadia L Abbas Baqubah Technical Institute Middle Technical University(MTU)BaghdadIraq Department of Civil Engineering College of EngineeringUniversity of DiyalaDiyalaIraq.

Al-Mansourieh zone is a part of Al-Khalis City within the province of Diyala and located in the Diyala River Basin in eastern Iraq with a total area about 830 *** is the main water source for agriculture in this *** well drilling without geological and hydraulic information has led the most of these wells to dry up ***,it is necessary to estimate the levels of groundwater in wells through observed *** this study,Alyuda NeroIntelligance 2.1 software was applied to predict the groundwater levels in 244 wells using sets of measured *** data included the coordinates of wells(x,y),elevations,well depth,discharge and groundwater *** ANN structures(5-3-3-1,5-10-10-1 and 5-11-11-1)were used to predict the groundwater levels and to acquire the best matching between the measured and ANN predicted *** coefficient of correlation,coefficient determination(R2)and sum-square error(SSE)were used to evaluate the performance of the ANN *** to the ANN results,the model with the three structures has a good predictability and proves more effective for determining groundwater level in *** best predictor was achieved in the structure 5-3-3-1,with R2 about 0.92,0.89,0.84 and 0.91 in training,validation,testing and all processes *** minimum average error in the best predictor is achieved in validation and testing processes at about 0.130 and 0.171 *** the other hand,the results indicated that the model has the potential to determine the appropriate places for drilling the wells to obtain the highest level of groundwater.

关键词： Groundwater Well ANN Diyala River

Assessment of the carbon abatement and removal opportunities of the Arabian Gulf Countries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Clean Energy 2021年第2期5卷 340-353页

作者： abdulrahman Alatiq Wail Aljedani Abdullah Abussaud Omar Algarni Hélène Pilorgé Jennifer Wilcox Department of Chemical Engineering Worcester Polytechnic InstituteGoddard Hall100 Institute RoadWorcesterMA 01609USA Department of Chemical and Biomolecular Engineering University of Pennsylvania220 S.33rd StreetPhiladelphiaPA 19104USA

The Arabian Gulf Countries(AGC)are strongly reliant on the economic export of fossil fuels,while being vulnerable to climate change that is resulting in temperature increase,air pollution and sea-level rise,and threatening the health of the population and *** agreement with the Paris Accords,most of the AGC have published short-term goals to reduce their carbon emissions in the coming *** relation to these goals,this study explores the potential CO_(2)reduction,avoidance and removal in the region,by comparing a business-as-usual(BAU)scenario to three decarbonization scenarios for the power *** 2018,the total greenhouse gas(GHG)emissions in the AGC were~1333 MtCO_(2)/yr and are expected to rise to 1568 MtCO_(2)/yr in 2030 following a BAU scenario,which is likely to be reduced to 1522 MtCO_(2)/yr in 2030 by following the countries’*** issued plans for the coming decades that focus on increasing the share of renewable energy in their grid *** three decarbonization scenarios presented in this study focus on supply-side technological *** retirement of the oldest natural-gas and oil power plants could lead to a total emissions reduction of~75 MtCO_(2)/yr,without accounting for the embodied carbon emissions associated with renewable *** addition,the implementation of point-source capture at power plants expected to retire in>10 years’time could avoid emissions of~240 MtCO_(2)/yr,provided the CO_(2)is permanently sequestered in appropriate geological *** region also shows high-quality solar resources and large CO_(2)-storage potential that could couple to direct air-capture plants to offset difficult-to-avoid *** last scenario has the potential to ultimately result in net negative emissions.

关键词： carbon capture CCUS direct air capture