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On the construction of balanced repeated measurements designs with good circular properties

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Statistical Theory and Related Fields 2023年第2期7卷 121-129页

作者： Muhammad Daniyal Jigneshkumar Gondaliya rashid ahmed Department of Statistics The Islamia University of BahawalpurBahawalpurPakistan Gujarat Commerce College Gujarat UniversityAhmedabadIndia

Several fields,such as biological,medical,public health,agricultural sciences,etc.,require circular balanced repeated measurement designs with fewer unequal number of repeated measure-ments than the number of ***,the availability and high cost of experimental subjects in these fields prefer the design in fewer experimental ***,balancing the carryover effects of the treatments in minimal experimental subjects is one of the problems in this *** this paper,several new series of minimal circular nearly strongly balanced RMDs in periods of two and three different sizes are *** proposed construction of designs has high efficiency and,therefore,can save the cost of experimentations due to a fewer exper-imental *** of the designs are very useful because of the unavailability of strongly balanced RMDs for these combinations of parameters.A list of sets of shifts for the construction of minimal circular nearly SBRMDs has also been mentioned in the Appendix.

关键词： Carryover effects repeated measurement designs balanced repeated measurement designs strongly balanced repeated measurement designs circular nearly strongly balanced repeated measurement designs

Cutting of nonmetallic materials using Nd:YAG laser beam

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Chinese Physics B 2012年第4期21卷 286-289页

作者： Bashir ahmed Tahir rashid ahmed M. G. B. Ashiq Afaq ahmed M. A. Saeed Institute of Advanced Photonic Sciences Faculty of Science Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia Physics Department Faculty of Science Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia Centre for Solid State Physics University of the Punjab Lahore Pakistan

This study deals with Nd：YAG laser cutting nonmetallic materials, which is one of the most important and popular industrial applications of laser. The main theme is to evaluate the effects of Nd：YAG laser beam power besides work piece scanning speed. For approximate cutting depth, a theoretical study is conducted in terms of material property and cutting speed. Results show a nonlinear relation between the cutting depth and input energy. There is no significant effect of speed on cutting depth with the speed being larger than 30 mm/s. An extra energy is utilized in the deep cutting. It is inferred that as the laser power increases, cutting depth increases. The experimental outcomes are in good agreement with theoretical results. This analysis will provide a guideline for laser-based industry to select a suitable laser for cutting, scribing, trimming, engraving, and marking nonmetallic materials.

关键词： laser power cutting speed depth of cut nonmetallic material Nd:YAG laser

EDSUCh:A robust ensemble data summarization method for effective medical diagnosis

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Digital Communications and Networks 2024年第1期10卷 182-189页

作者： Mohiuddin ahmed A.N.M.Bazlur rashid School of Science Edith Cowan UniversityPerthAustralia

Identifying rare patterns for medical diagnosis is a challenging task due to heterogeneity and the volume of *** summarization can create a concise version of the original data that can be used for effective *** this paper,we propose an ensemble summarization method that combines clustering and sampling to create a summary of the original data to ensure the inclusion of rare *** the best of our knowledge,there has been no such technique available to augment the performance of anomaly detection techniques and simultaneously increase the efficiency of medical *** performance of popular anomaly detection algorithms increases significantly in terms of accuracy and computational complexity when the summaries are ***,the medical diagnosis becomes more effective,and our experimental results reflect that the combination of the proposed summarization scheme and all underlying algorithms used in this paper outperforms the most popular anomaly detection techniques.

关键词： Data summarization Ensemble Medical diagnosis Sampling

Dominant ferromagnetic coupling over antiferromagnetic in Ni doped ZnO： First-principles calculations

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Frontiers of physics 2016年第1期11卷 121-127页

作者： Bakhtiar UI Haq rashid ahmed Galila Abdellatif Amiruddin Shaari Faheem K. Butt Mohammed Benali Kanoun Souraya Goumri-Said Department of Physics Faculty of Science UniversitiTeknologi Malaysia UTM Skudai Johor81310 Malaysia Department of Physics Sungkyunkwan University Suwon 44 0-746 Korea Physik-Department ECS Technische Universitat Miinchen James-Franck-Straβe 1 85748 Garching Germany Department of Physics The University of Lahore 1-KM Defence Road Lahore Pakistan Department of Physics Faculty of Science Cairo University Giza Egypt physics Department College of Science AlFaisal University P.O. Box 50927 Riyadh 11533 Saudi Arabia

The low magnetic moment （MM） in diluted magnetic semiconductors （DMS） at low impurity doping levels has triggered considerable research into condensed magnetic semiconductors （CMS）.This work reports an ab-initio investigation of the electronic structures and magnetic properties of ZnO in a zinc-blende （ZB） structure doped with nickel ions. Ni-doped ZnO-based DMS and CMS exhibit a dominance of ferromagnetic coupling over antiferromagnetic. A robust increase in the magnetization has been observed as a function of Ni impurity levels. This material favors short-range magnetic interactions at the ground state, suggesting that the observed ferromagnetism is defined by the double exchange mechanism. The spin-polarized density of states （DOS） of Ni-doped ZnO characterizes it as half-metallic with a considerable energy gap for up-spin components and as metallic for-down spins. Half metallic Ni：ZnO based magnetic semiconductors with high magnetization are expected to have potential applications in spintronics.

关键词： ZnO diluted magnetic semiconductors ab-initio calculations electronic structure,magnetic properties

Missing Data Imputations for Upper Air Temperature at 24 Standard Pressure Levels over Pakistan Collected from Aqua Satellite

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Journal of Data Analysis and Information Processing 2016年第3期4卷 132-146页

作者： Muhammad Usman Saleem Sajid rashid ahmed Institute of Geology University of the Punjab Lahore Pakistan Collage of Earth and Environmental Sciences University of the Punjab Lahore Pakistan Center for Geographic Information System Punjab University Collage of Information Technology Lahore Pakistan

This research was an effort to select best imputation method for missing upper air temperature data over 24 standard pressure levels. We have implemented four imputation techniques like inverse distance weighting, Bilinear, Natural and Nearest interpolation for missing data imputations. Performance indicators for these techniques were the root mean square error (RMSE), absolute mean error (AME), correlation coefficient and coefficient of determination ( R2 ) adopted in this research. We randomly make 30% of total samples (total samples was 324) predictable from 70% remaining data. Although four interpolation methods seem good (producing 0.99) found between actual and predicted air temperature data through this method. The high value of the coefficient of determination (0.99) through bilinear interpolation method, tells us best fit to the surface. We have also found similar results for imputation with natural interpolation method in this research, but after investigating scatter plots over each month, imputations with this method seem to little obtuse in certain months than bilinear method.

关键词： Missing Data Imputations Spatial Interpolation AQUA Satellite Upper Level Air Temperature AIRX3STML

Economic Evaluation of Production Costs and Returns of Potato Crop in Sylhet Region of Bangladesh

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Natural Resources 2020年第3期11卷 96-111页

作者： Md. Shah Alamgir Md. rashid ahmed Jasim Uddin ahmed Rubaiya Binte Mostafiz Department of Agricultural Finance and Banking Sylhet Agricultural University Sylhet Bangladesh Department of Agricultural Economics and Policy Sylhet Agricultural University Sylhet Bangladesh Graduate School of Life and Environmental Sciences University of Tsukuba Ibaraki Japan

Potato production is becoming one of the major profitable crops among the famers in the northeastern part of Bangladesh. This study investigates the occupational status, land tenure arrangement, household income scenarios, and estimates the level of costs and net income variation for potato production in the greater Sylhet areas of Bangladesh by using the both descriptive and statistical techniques. The descriptive results exhibit that most of the households involved in farming as well as other income generating activities;however, the highest income share comes from the household business followed by agricultural activities. Near about half of the farmers belonged from the small category (46.39 percent) and around 37 percent were pure tenant while 30 percent were mixed tenant involved with both sharecropping and cash lease farming. Nonagricultural income and remittance are the key income sources of employment that influence the average per capita income. Agriculture share was approximately 9 percent in total household income where rice dominates the major share and potato does not have significant contribution. However, seed, irrigation, fertilizer, and hired labor cost were the major cost components for potato cultivation. This study also decomposed the variance of net income into different factors and found that gross income difference exists among the farmers due to the fertilizer and seed cost variation. Gross income explained the net income variation, which implies that potato yield or potato price (quality) or both vary widely among the farmers. This study can contribute to making?links between the shares of farm household income that would be helpful for policy makers to understand the causes of cost and income variation as well as opt for better strategies to support the farmers.

关键词： Cost Net Income and Potato Production

The diagnostic conundrum in necrotizing otitis externa

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第1期10卷 59-65页

作者： Abiya A.ahmed Shaan rashid Vinay K.Gupta Neil C.Molony Keshav K.Gupta Bradford Royal Infirmary Bradford Teaching Hospitals NHS Foundation TrustWest BromwichWest YorkshireUK Sandwell and West Birmingham Hospitals NHS Trust West BromwichUK Russells Hall Hospital DudleyUK

Necrotizing otitis externa(NOE)is an aggressive and fast‐evolving infection of the external auditory *** diagnoses and untreated cases can lead to severe,even fatal consequences and so early diagnosis and treatment are *** is a notoriously challenging diagnosis to *** is therefore important to understand what diagnostic modalities are available and how otolaryngologists can use them to accurately treat such an aggressive *** review aims to evaluate the different diagnostic options available in NOE and discuss their advantages and limitations,thus,providing an up‐to‐date picture of the multimodal approach required in the diagnosis of this disease.

关键词： diagnostic malignant otitis externa necrotizing osteomyelitis skull base osteomyelitis temporal bone osteomyelitis

Relationship between Seed Priming Mediated Seedling Vigor and Yield Performance of Spring Wheat

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Phyton-International Journal of Experimental Botany 2024年第6期93卷 1159-1177页

作者： Md.Parvez Anwar Masuma Akhter Sharmin Aktar Sinthia Afsana Kheya A.K.M.Mominul Islam Sabina Yeasmin ahmed Khairul Hasan Md.Harun Or rashid Department of Agronomy Bangladesh Agricultural UniversityMymensingh2202Bangladesh

Seed priming is a pre-germinated technique that can enhance seed germination percentage,faster and synchro-nized germination,better seedling growth,and yield under stress *** ascertain the most effective seed priming method that would ensure the potential yield of wheat in Bangladesh,two experiments were carried out from December 2021 to March 2022 at the Department of Agronomy,Bangladesh Agricultural *** wheat varieties namely BARI Gom-28 and BWMRI Gom-1 were subjected to a range of priming chemicals in both lab and pot *** compounds included the following:control(no priming),hydropriming(distilled water),10000 ppm KNO_(3),15000 ppm KNO_(3),40000 ppm Mannitol,60000 ppm Mannitol,10000 ppm NaCl,20000 ppm NaCl,100 ppm PEG,150 ppm PEG,500 ppm NaOCl,1000 ppm NaOCl,10000 ppm CaCl_(2),20000 ppm CaCl_(2),10000 ppm KCl and 20000 ppm KCl.A complete randomized design(CRD)with three repli-cations was used to set up the *** results showed that BARI Gom-28 and BWMRI Gom-1 responded best to KCl priming in terms of rapid seed germination and strong seedling *** the other hand,the best priming agents for plant growth and productivity turned out to be CaCl_(2) and *** results of this study support the possibility of using seed priming as a technique to improve wheat plant development and output by raising seed emergence and survival rates.

关键词： Priming seedling percentage germination growth yield wheat

Ultra-high-performance liquid chromatography-quadrupole time-of-flight-mass spectrometry-characterized extract of Aerides odorata Lour alleviates paracetamol-induced hepatotoxicity in animal model evidenced by biochemical,molecular,and computational studies

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Animal Models and Experimental Medicine 2024年第4期7卷 497-522页

作者： A.M.Abu ahmed Md.Atiar Rahman Farjana Sharmen A.S.M.Ali Reza Md.Shahidul Islam Md.Mamunur rashid Md.Khalid Juhani Rafi Tanvir ahmed Siddiqui Md.Muzahid ahmed Ezaj Srabonti Saha Md.Nazim Uddin Walla Alelwani Department of Genetic Engineering and Biotechnology University of ChittagongChittagongBangladesh Department of Biochemistry and Molecular Biology University of ChittagongChittagongBangladesh Department of Pharmacy International Islami University ChittagongChittagongBangladesh Institute of Food Science and Technology Bangladesh Council of Scientific and Industrial ResearchDhakaBangladesh Department of Biochemistry College of ScienceUniversity of JeddahJeddahSaudi Arabia

Background:Many kinds of orchids have significant health benefits although ade-quate research on their biological functions is yet to be carried *** study inves-tigated the paracetamol-induced liver damage-protecting effect of epiphytic Aerides odorata methanol extract(AODE).Methods:The protective effects of AODE were studied by analyzing its effect on liver function parameters,messenger RNA(mRNA)expression,and tissue histopatho-logical *** results were confirmed by ligand-receptor interaction of molecular docking and multitarget interaction of network pharmacological ***:AODE significantly(p<0.05)minimized the dose-dependent increase in acid phosphatase,aspartate aminotransferase,alanine aminotransferase,alkaline phos-phatase,γ-glutamyl transferase,lactate dehydrogenase,and total bilirubin compared to the reference drug *** level decreased,and the antioxidant genes catalase(CAT),superoxide dismutase(SOD),β-actin,paraoxonase-1(PON1),and phosphofructokinase-1(PFK-1)were upregulated in AODE-treated paracetamol-intoxicated rats.A total of 376 compounds comprising phenols and flavonoids were identified using ultra-high-performance liquid chromatography-quadrupole time-of-flight-mass spectrometry(UPLC-qTOF-MS).The online toxicity assessment using SwissADME and admetSAR exhibited drug-like,nontoxic,and potential pharmaco-logical ***,in silico analysis showed that isoacteoside,one of the identified compounds,exhibited the best docking score(−11.42)with the liver pro-tein human pituitary adenylate cyclase-1(Protein Data Bank ID:3N94).Furthermore,network pharmacology analysis identified the top 10 hub genes,namely AKT1(protein kinase B),CTNNB1(catenin beta-1),SRC(proto-oncogene c-Src),TNF(tumor necrosis factor),EGFR(epidermal growth factor receptor),HSP90AA1(heat shock protein 90α),MAPK3(mitogen-activated protein kinase 3),STAT3(signal transducer and activator of transcription 3),CASP3(caspase protein),

关键词： Aerides odorata animal model mRNA expression PCM-induced hepatotoxicity UPLC-qTOF-MS