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Development of stability-preserving time-limited model reduction framework for 2-D and 1-D models with error bound

Control Theory and Technology 2022年第3期20卷 371-381页

作者： Muhammad Imran Syeda Hira Ambreen Syed Nooh Hamdani Muhammad Imran Muhammad Ejaz Naveed Maria siddiqui Department of Electrical Engineering Military College of Signals(MCS)National University of Sciences and Technology(NUST)Islamabad43000Pakistan Department of Electrical Engineering Sir Syed(Center For Advanced Studies)Institute of Technology(SSCASE)Islamabad43000Pakistan College of Science and Humanities Rumah Majmaah UniversityRumahKingdom of Saudi Arabia

Due to their complex structure,2-D models are challenging to work with;additionally,simulation,analysis,design,and control get increasingly difficult as the order of the model ***,in particular time intervals,Gawronski and Juang’s time-limited model reduction schemes produce an unstable reduced-order model for the 2-D and 1-D *** revealed some stability preservation solutions to address this key flaw which ensure the stability of 1-D reduced-order systems;nevertheless,these strategies result in large approximation ***,to the best of the authors’knowledge,there is no literature available for the stability preserving time-limited-interval Gramian-based model reduction framework for the 2-D discrete-time *** this article,2-D models are decomposed into two separate sub-models(i.e.,two cascaded 1-D models)using the condition of minimal *** reduction procedures are conducted on these obtained two 1-D sub-models using limited-time *** suggested methodology works for both 2-D and 1-D ***,the suggested methodology gives the stability of the reduced model as well as a priori error-bound expressions for the 2-D and 1-D *** results and comparisons between existing and suggested methodologies are provided to demonstrate the effectiveness of the suggested methodology.

关键词： model reduction Weighted Gramian Limited interval Gramian Minimal realization Approximation error Error bound

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Antibiotic susceptibility profiling and virulence potential of Campylobacter jejuni isolates from different sources in Pakistan

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Asian Pacific Journal of Tropical Medicine 2015年第3期8卷 197-202页

作者： Fariha Masood siddiqui Muhammad Akram Nighat Nourccn Zobia Noreen Habib Bokhari Department of Biosciences.COMSATS Institute of Information Technology

Objective:To determine antibiotic resistance patterns and virulence potential of Campylobacter jejuni(***) isolates from clinical human diarrheal infections,cattle and healthy ***:Antibiotic sensitivity patterns of *** isolates were determined by Kirby Bauer Disc Diffusion *** isolates were then subjected to virulence profiling for the detection of map A(membrane-associated protein).cadF(fibronectin binding protein).wlaN(beta-1.3-galaclosyltransferase) and neu AB(sialic acid biosynthesis gene).Further *** isolates were grouped by random amplification of polymorphic DNA(RAPD) ***:A total of436 samples from poultry(n=88).cattle(n=216) and humans(n=132) from different locations were *** revealed percentage of *** isolates were 35.2%(31/88).25.0%(54/216) and 11.3%(15/132) among poultry,cattle and clinical human samples *** susceptibility results showed that similar resistance patterns to cephalothin was ie.87.0%,87.1%and 89%among humans,poultry and cattle respectively,followed by sulfamethoxazolc+trimcthoprim 40.0%,38.7%and 31.0%in humans,poultry and cattle and Ampicillin 40%,32%and 20%in humans,poultry and cattle ***-lactamase activity was detected in 40.00%humans.20.37%cattle and 32.25%in poultry *** *** and mapA were present in all poultry,cattle and human C jejuni *** was not detected in any isolate and neu AB was found in 9/31(36%) poultry *** profiling results suggested high diversity of *** ***:Detection of multidrug resistant *** strains from poultry and cattle is alarming as they can be potential hazard to ***,predominant association of virulence factors,cadF and map A(100%each) in *** isolates from all sources and neuAB(36%) with poultry isolates suggest the potential source of transmission of diverse types of *** to humans.

关键词： Campylobacter jejuni Antibiotic susceptibility Virulence genes PCR RAPD

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Maximum Sustainable Yield Estimates of Ladypees,Sillago sihama(Forsskl),Fishery in Pakistan Using the ASPIC and CEDA Packages

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Journal of Ocean University of China 2012年第1期11卷 93-98页

作者： Sher Khan Panhwar LIU Qun Fozia Khan Pirzada J.A.siddiqui College of Fisheries Ocean University of ChinaQingdao 266003P.R.China Centre of Excellence in Marine Biology University of KarachiSindh 75270Pakistan

Using surplus production model packages of ASPIC(a stock-production model incorporating covariates) and CEDA(Catch effort data analysis),we analyzed the catch and effort data of Sillago sihama fishery in *** estimates the pa-rameters of MSY(maximum sustainable yield),Fmsy(fishing mortality),q(catchability coefficient),K(carrying capacity or unexploited biomass) and B1/K(maximum sustainable yield over initial biomass).The estimated non-bootstrapped value of MSY based on logistic was 598 t and that based on the Fox model was 415 t,which showed that the Fox model estimation was more conservative than that with the logistic *** R2 with the logistic model(0.702) is larger than that with the Fox model(0.541),which indicates a better *** coefficient of variation(cv) of the estimated MSY was about 0.3,except for a larger value 88.87 and a smaller value of *** contrast to the ASPIC results,the R2 with the Fox model(0.651-0.692) was larger than that with the Schaefer model(0.435-0.567),indicating a better *** key parameters of CEDA are:MSY,K,q,and r(intrinsic growth),and the three error assumptions in using the models are normal,log normal and *** estimates from the Schaefer and Pella-Tomlinson models were *** MSY estimations from the above two models were 398 t,549 t and 398 t for normal,log-normal and gamma error distributions,*** MSY estimates from the Fox model were 381 t,366 t and 366 t for the above three error assumptions,*** Fox model estimates were smaller than those for the Schaefer and the Pella-Tomlinson *** the light of the MSY estimations of 415 t from ASPIC for the Fox model and 381 t from CEDA for the Fox model,MSY for *** is about 400 *** the catch in 2003 was 401 t,we would suggest the fishery should be kept at the current *** models used here depend on the assumption that CPUE(catch per unit effort) data used in the study can reliably quantify temporal vari

关键词： Pakistan Sillago sihama ASPIC CEDA surplus production models

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An investigation of non-Newtonian fluid flow due to metachronal beating of cilia in a tube

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International Journal of Biomathematics 2015年第2期8卷 29-51页

作者： A. M. siddiqui A. A. Farooq M. A. Rana Department of Mathematics Pennsylvania State University York Campus York PA 17403-3398 USA Department of Basic Sciences Riphah International University Islamabad 44000 Pakistan Department of Mathematics COMSATS Institute of Information Technology Tobe Camp Abbottabad Pakistan

The aim of this study is to explain theoretically the role of ciliary motion on the transport of epididymal fluid through the ductus efferentes of the male reproductive track. For this purpose, a mathematical model has been developed for the flow of a non-Newtonian fluid in an axisymmetric tube due to metachronal wave of cilia motion for the more realistic consequences. Carreau viscous fluid model is considered to see the rheological effects on the pumping characteristics of the flow. Regular perturbation method has been employed to obtain the analytical expressions for the stream function, the velocity field and a relation between the pressure difference and the volume flow rate. It is found that the volume flow rate is influenced significantly by Weissenberg number We and the cilia length parameter ε. The computational results are presented graphically to see the effects of various physical parameters. Finally, the analysis is applied and compared with the observed value of the flow rate of spermatic fluid in the ductus efferentes of the male reproductive track. The volume flow rate is reported closed to the estimated value 6 × 10^-3 ml/h in the human ductus efferentes when We = 0.5 and e is near by 0.25.

关键词： Cilia-induced motion axisymmetric tube metachronal wave Carreau fluid analytic solutions pumping and trapping.

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Genotypic Variation in Spatial Distribution of Fe in Rice Grains in Relation to Phytic Acid Content and Ferritin Gene Expression

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Rice science 2020年第3期27卷 227-236页

作者： Anurag MISHRA MdSHAMIM MdWASIM siddiqui Akanksha SINGH Deepti SRIVASTAVA K.N.SINGH Department of Plant molecular Biology and Genetic Engineering Narendra Deva University of Agriculture and TechnologyKumarganjFaizabadUttar Pradesh 224229India Division of Genetics ICAR-Indian Agricultural Research InstituteNew Delhi 110012India Department of molecular Biology and Genetic Engineering Dr.Kalam Agricultural CollegeKishanganj(Bihar Agricultural UniversitySabourBhagalpur)Bihar 855107India Department of Post-Harvest Technology Bihar Agricultural UniversitySabourBhagalpurBihar 813210India Integral Institute of Agricultural Science and Technology(IIAST)Integral University Kursi RoadDasauliUttar Pradesh 226026India

Rice varieties having high Fe concentration in the endospermic region can be used as a good source for Fe deficit *** this study,303 Oryza sativa varieties and 1 Oryza rufipogon accession were assessed for spatial Fe accumulation in grains by Prussian blue staining *** ferritin protein distribution in grains was visualized by immunohistochemistry,and ferritin expression was assessed in selected rice varieties using semi-quantitative reverse transcription *** popular rice varieties,namely Sarjoo 52,Madhukar and Jalmagna,and the *** variety showed Fe in all the regions of grains,and the highest Fe concentration was observed in the embryo *** high-yielding varieties like Swarna,Swarna Sub 1,CSR13 and NDRR359 had lower Fe concentration in the embryo *** highest Fe concentration was detected in ***(49.8μg/g),followed by Sarjoo 52(26.1μg/g)and Madhukar(25.7μg/g).Phytic acid concentration was the minimum in ***(5.75 mg/g)followed by Sarjoo 52(5.83 mg/g).Western blot and semi-quantitative reverse transcription PCR showed higher expression of ferritin gene in ***,Sarjoo 52 and *** conclusion,*** and Sarjoo 52 had higher Fe concentration in the embryo regions as well as endosperm and aleurone layer,whereas the other varieties had lower Fe concentration in the *** 52 could be used as a donor in the rice breeding program for the generation of new varieties with elevated grain Fe concentration.

关键词： bio-fortification iron accumulation ferritin tissue-specific localization iron deficit population

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Early colonoscopy in patients with acute diverticular bleeding is associated with improvement in healthcare-resource utilization

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Gastroenterology Report 2019年第2期7卷 115-120,I0002页

作者： Hamzeh Saraireh Obada Tayyem mohamed Tausif siddiqui Bashar Hmoud mo.ammad Bilal Department of Internal Medicine University of Texas Medical BranchGalvestonTXUSA Department of Internal Medicine New York Medical CollegeValhallaNYUSA Division of Gastroenterology&Hepatology Department of Internal MedicineUniversity of Texas Medical BranchGalvestonTXUSA

Background:Diverticular bleeding(DB)is the most common cause of severe acute lower gastrointestinal bleeding(GIB)in developed *** role of early colonoscopy(<24 hours)continues to remain controversial and data on early... 详细信息

Background:Diverticular bleeding(DB)is the most common cause of severe acute lower gastrointestinal bleeding(GIB)in developed *** role of early colonoscopy(mongstwhom 45020(50.8%)had colonoscopy within 24hours of admission(early colonoscopy),while 43580(49.2%)patients had colonoscopy after 24hours of admission(late colonoscopy).LOS was significantly lower in patients with early colonoscopy as compared to those with late colonoscopy(3.7 vs 5.6days,Pmortality between both groups(0.7 vs 0.8%).After adjusting for potential confounders,the differences in LOS and total hospitalization costs between early and late colonoscopy remained statistically ***:Early colonoscopy in acute DB significantly reduced LOS and total hospitalization *** was no significant difference inmortality *** of early colonoscopy in the appropriate patients presenting with acute DB

关键词： Diverticular bleeding colonoscopy lower gastrointestinal bleeding timing of colonoscopy

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Computer Vision-Control-Based CNN-PID for mobile Robot

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Computers, Materials & Continua 2021年第7期68卷 1065-1079页

作者： Rihem Farkh mo.ammad Tabrez Quasim Khaled Al jaloud Saad Alhuwaimel Shams Tabrez siddiqui College of Engineering Muzahimiyah BranchKing Saud UniversityP.O.Box 2454Riyadh11451Saudi Arabia College of Computing and Information Technology University of BishaBisha67714Saudi Arabia King Abdulaziz City for Science and Technology Saudi Arabia Department of Computer Science College of Computer Science and Information TechnologyJazan UniversityJazanSaudi Arabia Department of Electrical Engineering Laboratory for AnalysisConception and Control of SystemsLR-11-ES20National Engineering School of TunisTunis El Manar UniversityTunisTunisia

With the development of artificial intelligence technology,various sectors of industry have *** them,the autonomous vehicle industry has developed considerably,and research on self-driving control systems using artificial intelligence has been extensively *** on the use of image-based deep learning to monitor autonomous driving systems have recently been *** this paper,we propose an advanced control for a serving robot.A serving robot acts as an autonomous line-follower vehicle that can detect and follow the line drawn on the floor and move in specified *** robot should be able to follow the trajectory with speed *** controllers were used simultaneously to achieve *** neural networks(CNNs)are used for target tracking and trajectory prediction,and a proportional-integral-derivative controller is designed for automatic steering and speed *** study makes use of a Raspberry PI,which is responsible for controlling the robot car and performing inference using CNN,based on its current image input.

关键词： Autonomous car pid control deep learning convolutional neural network differential drive system raspberry pi

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Mathematical modelling and analysis of plastic waste pollution and its impact on the ocean surface

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Journal of Ocean Engineering and Science 2020年第2期5卷 136-163页

作者： Sonam Chaturvedi Bikarama Prasad Yadav Nihal Anwar siddiqui Sudhir Kumar Chaturvedi Department of Health Safety Environment and Civil Engineering University of Petroleum and Energy Studies(UPES)Bidholi Energy AcresDehradun 248007India Department of Aerospace Engineering University of Petroleum and Energy Studies(UPES)Bidholi Energy AcresDehradun 248007India

Plastic contamination is universal all through the marine condition,yet gauges of the worldwide plenitude and weight of coasting plastics have needed information,especially from the Southern Hemisphere and remote *** we report a gauge of the all-out number of plastic particles and their weight gliding on the planet’s seas from 24 endeavours(2007-2013)over every one of the five subtropical gyres,coastal Australia,Bay of Bengal and the Mediterranean Sea directing surface net tows(N=680)and visual review transects of huge plastic flotsam and debris(N=891).Utilizing an oceanographic model of coasting trash dispersal adjusted by our information,and rectifying for wind-driven vertical blending,we gauge at least 5.25 trillion particles weighing 268,940 *** looking at between four size classes,two micro plastic4.75 mm,a huge loss of micro plastics is seen from the ocean surface contrasted with anticipated paces of discontinuity,recommending there are systems at play that expelmodels has been *** impact of the ocean pollution is also being analysed.

关键词： Solid waste Plastic Garbage patch Ocean pollution Mathematical model Ocean surface

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Determining the component-based operative time learning curve for robotic-assisted radical prostatectomy

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Current Urology 2022年第4期16卷 240-245页

作者： David Ambinder Shu Wang mohummad Minhaj siddiqui Division of Urology Department of SurgeryUniversity of Maryland School of MedicineBaltimoreMDUSA

Objectives:To determine the learning curve(LC)of total operative time and the discrete components of the robotic-assisted radical prostatectomy(RARP)for a recent robotic fellowship-trained urologic *** and methods:We performed a retrospective analysis of RARP procedures performed by a single new attending surgeon from August 2015 to April ***'demographics and operative details were *** operative time was divided and prospectively recorded in 7 parts:(a)docking robot,(b)dissecting seminal vesicles(SVs)(c)dissecting endopelvic fascia(EPF),(d)incising bladder neck(BN),(e)completing the dissection,(f)lymph node dissection,and(g)urethrovesical anastomosis(UVA)and robot *** sum analysis was used to ascertain the LC for total operative time and the 7 parts of the ***:One hundred twenty consecutive RARPs were *** LC was overcome at 25 cases for total operative time,13 cases for docking the robot,33 cases for dissecting SVs,31 cases for dissecting EPF,46 cases for incising BN,38 cases for prostate dissection,25 cases for lymph node dissection,and 52 cases for *** operative time was decreased 22.8%(pmonstrated variable LCs including the UVA that required upward of 52 cases.

关键词： Cumulative sum(CUSUM)analysis Learning curve Prostate cancer Robotic-assisted radical prostatectomy

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Further constituents from Rhododendron lepidotum L

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Chinese Chemical Letters 2010年第3期21卷 332-336页

作者： Mudasir Ahmad Tantry Reehana Khan Seema Akbar Abdul Sami Shawl mohammed Khalid siddiqui Drug Standardisation Research Unit Regional Research Institute of Unani Medicine(CCRUM)Naseem Bagh CampusUniversity of Kashmir Natural Product Chemistry Division Indian Institute of Integrative Medicine(CSIR) Central Council for Research in Unani Medicine(CCRUM)

A unusual flavone glycoside named Shamimarin(1) and a new compound Acetoxy-8-methyl-chromen-2H-one(2) were isolated from aerial parts of Rhododendron lepidotum *** with four known coumarins daphnin(3),daphnetin 8-O-β-D-glucopyrano-side (4),daphnetin(5) and umbelliferone(6).The structural elucidations were based on analyses of chemical and spectroscopic data by including ID and 2D NMR analyses.

关键词： Rhododendron lepidotum Flavone Coumarin

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