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Design of an Efficient Cooperative Spectrum for Intra-Hospital Cognitive Radio Network

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Computers, Materials & Continua 2021年第10期69卷 35-49页

作者： Abhinav Adarsh Basant Kumar Manoj gupta Arun Kumar aman Singh Mehedi Masud Fahad A.Alraddady Department of ECE MNNIT AllahabadPrayagraj211004India Department of ECE JECRC UniversityJaipur303905India Computer Science and Engineering Lovely Professional UniversityPunjab144411India Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia

This paper presents a new low delay centralized cooperative spectrum sensing method based on dynamic voting rule using multiple threshold level,for indoor hospital environment,where fading and direct path loss both are together responsible for variation in signal *** the proposed algorithm,weights of Cognitive Radios(CRs)in terms of assigned votecount are estimated based on the sensed energy values with respect to multiple fixed threshold levels,so that the direct path loss can be dealt without further increasing the error,which occurs due to *** indoor hospital like environment,Rician fading model is more ***,formulation,evaluation and analysis of various sensing performance parameters have been carried out considering Rician fading *** analysis and tradeoff among three optimum parameters-energy threshold,total number of CRs participating in sensing and total error rate,are presented with respect to signal to noise ratio(SNR).Finally,the Monte Carlo simulation is designed and implemented considering the two conditions-only fading environment and fading along with direct path loss *** can be observed that in both cases,the proposed spectrum sensing rule outperforms the other contemporary rules.

关键词： Cognitive radio direct path loss spectrum sensing health care

An Intelligent Forecasting Model for Disease Prediction Using Stack Ensembling Approach

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Computers, Materials & Continua 2022年第3期70卷 6041-6055页

作者： Shobhit Verma Nonita Sharma aman Singh Abdullah Alharbi Wael Alosaimi Hashem Alyami Deepali gupta Nitin Goyal Computer Science&Engineering Department Dr.B.R.Ambedkar National Institute of TechnologyJalandharIndia Computer Science&Engineering Department Lovely Professional UniversityJalandharIndia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Chitkara University Institute of Engineering and Technology Chitkara UniversityPunjabIndia

This research work proposes a new stack-based generalization ensemble model to forecast the number of incidences of conjunctivitis *** addition to forecasting the occurrences of conjunctivitis incidences,the proposed model also improves performance by using the ensemble *** rate of acute Conjunctivitis per 1000 for Hong Kong is collected for the duration of the first week of January 2010 to the last week of December ***-processing techniques such as imputation of missing values and logarithmic transformation are applied to pre-process the data sets.A stacked generalization ensemble model based on Auto-ARIMA(Autoregressive Integrated Moving Average),NNAR(Neural Network Autoregression),ETS(Exponential Smoothing),HW(Holt Winter)is proposed and applied on the *** analysis is conducted on the collected dataset of conjunctivitis disease,and further compared for different performance *** result shows that the RMSE(Root Mean Square Error),MAE(Mean Absolute Error),MAPE(Mean Absolute Percentage Error),ACF1(Auto Correlation Function)of the proposed ensemble is decreased *** the RMSE,for instance,error values are reduced by 39.23%,9.13%,20.42%,and 17.13%in comparison to Auto-ARIMA,NAR,ETS,and HW model *** research concludes that the accuracy of the forecasting of diseases can be significantly increased by applying the proposed stack generalization ensemble model as it minimizes the prediction error and hence provides better prediction trends as compared to Auto-ARIMA,NAR,ETS,and HW model applied discretely.

关键词： Disease prediction stack ensemble neural network autoregression exponential smoothing auto-ARIMA holt winter

Comparative H2S Sensing Characteristics of Fe2O3: Thin Film vs. Bulk

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Soft Nanoscience Letters 2013年第4期3卷 6-8页

作者： Vishal Balouria Ajay Singh Niranjan Suryakant Ramgir Anil Krishan Debnath aman Mahajan Ratish Kumar Bedi Dinesh Kumar Aswal Shiv Kumar gupta Material Science Laboratory Department of Physics Guru Nanak Dev University Amritsar India. Technical Physics Division Bhabha Atomic Research Center Mumbai India Technical Physics Division Bhabha Atomic Research Center Mumbai India

Comparative investigations of gas sensing characteristics of Fe2O3 in both thin film as well as bulk forms have been performed. Thin film sensors were realized by first depositing Fe films using electron-beam evaporation followed by thermal oxidation. Bulk sensors in the form of pellets were prepared by cold pressing commercial Fe2O3 powder with subsequent sintering. Both thin film and bulk Fe2O3 sensors exhibited a selective and reversible response characteristics towards H2S with maximum response at an operating temperature of 250°C and 200°C, respectively. A negligible response towards other interfering gases was observed. Thin film sensors exhibited an enhanced response in comparison to that of pellets.

关键词： Fe2O3 Thin Film Pellets H2S Sensor

Interaction between tumor stage and age on survival outcomes of patients with anaplastic thyroid cancer

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World Journal of Experimental Medicine 2024年第3期14卷 90-100页

作者： Ayrton I Bangolo Auda Auda John Bukasa-Kakamba Nayan Bhakta Shraboni Dey Anupriya lilhori Gowry Reddy Budoor Alqinai aman Sidiqui Imranjot Sekhon Barbare Khatiashvili Iqra Abbas Sandra Kunnel Amer Jarri Emelyn Martinez Deborah Daoud Ishita gupta Harshini Gompa Silvanna Pender Dana Aljaberi Hamed Aljanaahi Sandra S Kunnel Yingxia Xiao Yoontae Jung Sneha Nagpaul Afshan Naz Tejaswee Mallela Phyo Maung Maung Ibtihal Y Khalaf Soobee Kim Roua Alrestom Aditya Gajera Hiba Alkealy Deepti Kansal Sonam Dhall Sanya Satheesha Simcha Weissman Pierre Fwelo Department of Internal Medicine Palisades Medical CenterNorth BergenNJ 07047United States Department of Medicine Palisades Medical CenterNorth BergenNJ 07047United States Department of Endocrine and Metabolic Disorders University of KinshasaKinshasa KinshasaCongo Department of Epidemiology Human Geneticsand Environmental SciencesUTHealth School of Public HealthHoustonTX 77030United States

BACKGROUND Anaplastic thyroid cancer(ATC)is an aggressive,rare malignancy associated with rapid growth and metastasis,and a very poor *** investigated the clinical characteristics,survival outcomes and independent prognostic factors associated with anaplastic thyroid *** To assess to what extent the interaction between age and tumor stage affects *** A total of 622 patients diagnosed with anaplastic thyroid cancer,between 2010 and 2017 were enrolled in our study by retrieving data from the Surveillance,Epidemiology and End Results(SEER)*** analyzed demographics,clinical characteristics,overall mortality(OM)and cancer specific mortality(CSM)of *** with a P value<0.1 were incorporated into the multivariate cox model to determine the independent prognostic ***,we analyzed the interaction between age and tumor stage on *** In the multivariate analyses,the divorced/separated population had a lower OM[hazard ratio(HR)=0.63,95%CI:0.42-0.94,P<0.05]and CSM(HR=0.61,95%CI:0.40-0.92,P<0.05).OM was higher in tumors with direct extension only(HR=6.26,95%CI:1.29-30.42,P<0.05)and tumors with distant spread(HR=5.73,95%CI:1.34-24.51,P<0.05).CSM was also higher in tumors with direct extension(HR=5.05,95%CI:1.05-24.19,P<0.05)and tumors with distant spread(HR=4.57,95%CI:1.08-19.29,P<0.05).Mortality was not adversely affected by lymph node *** was lower in patients who received radiation(HR=0.66,95%CI:0.53-0.83,P<0.01),chemotherapy(HR=0.63,95%CI:0.50-0.79,P<0.01)or surgery(HR=0.53,95%CI:0.43-0.66,P<0.01).CSM was also lower in patient who received radiation(HR=0.64,95%CI:0.51-0.81,P<0.01),chemotherapy(HR=0.62,95%CI:0.50-0.78,P<0.01)or surgery(HR=0.51,95%CI:0.41-0.63,P<0.01).There was no significant interaction between age and tumor stage that affected *** In this large US SEER database retrospective study,we found the mortality to be higher in advanced stage tumors with direct extensi

关键词： Undifferentiated thyroid cancer Survival outcome Prognosis Metastasis Clinical trials Interaction