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Predictive Control Based on Fuzzy Supervisor for PWARX Hybrid Model

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International Journal of Automation and computing 2019年第5期16卷 683-695页

作者： Olfa Yahya Zeineb Lassoued kamel abderrahim Numerical Control of Industrial Processes National Engineering School of Gabes University of Gabes

In this paper, the problem of hybrid model predictive control(HMPC) strategy based on fuzzy supervisor for piecewise autoregressive with exogenous input(PWARX) models is addressed. We first represent the nonlinear behavior of the system with a PWARX model. Then, we transform the obtained PWARX model into a mixed logical dynamic(MLD) model in order to apply the proposed predictive control which is able to stabilize such systems along desired reference trajectories while satisfying operating ***, we propose to introduce a fuzzy supervisor allowing the readjustment of the HMPC tuning parameters in order to maintain the desired performance. Simulation and experimental results are presented to illustrate the effectiveness of the proposed approach.

关键词： Nonlinear control hybrid systems mixed logical dynamic(MLD) model predictive control fuzzy supervisor

New Results on Discrete-time Delay Systems Identification

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International Journal of Automation and computing 2012年第6期9卷 570-577页

作者： Sada Bedoui Majda Ltaief kamel abderrahim Department of Electrical and Automation Engineering National Engineering School of GabesUniversity of Gabes

A new approach for simultaneous online identification of unknown time delay and dynamic parameters of discrete-time delay systems is proposed in this *** proposed algorithm involves constructing a new generalized regression vector and defining the time delay and the rational dynamic parameters in the same *** gradient algorithm is used to deal with the identification *** effectiveness of this method is illustrated through simulation.

关键词： Time delay identification gradient method discrete-time delay system iterative algorithm.

Wood By-Products as UV Protection:A Consequence Review

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Journal of Renewable Materials 2024年第4期12卷 699-720页

作者： Naglaa Salem El‑Sayed Mohamed Hasanin Samir kamel Cellulose and Paper Department National Research CentreCairo12622Egypt

In recent decades,the ozone layer has suffered considerable damage,increasing the entry of ultraviolet(UV)light into the atmosphere and reaching the earth’s surface,negatively affecting ***,researchers aimed to solve this problem by synthesizing advanced UV-shielding *** the other hand,developing an easy and green strategy to prepare functional materials with outstanding properties based on naturally abundant and environmentally friendly raw materials is highly desirable for sustainable *** biomass-derived materials are sustainable and biodegradable,they present a promising substitute for petroleum-based *** three main structural constituents of the plant biomass-based materials that are naturally available are cellulose,hemicellulose,and *** review details current developments using wood-based products such as cellulose,hemicellulose,and lignin in UV-shielding *** will start with assembling the structure and chemistry of cellulose,hemicellulose,and lignin,followed by their contributions to preparing UV-shielding ***,it will briefly discuss the different processing methods for the design of UV-shielding *** wood by-products offer additional opportunities to use the whole tree harvest.

关键词： UV-shielding wood cellulose lignin hemicellulose sunlight protection

Stock Markets,Financial Depth,and Economic Growth in China:Evidence from ARDLModel

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China Finance and Economic Review 2024年第1期13卷 88-111页

作者： Afef Bouattour Maha Kalai kamel Helali Higher Institute of Business Administration of Sfax University of Sfax Faculty of Economics and Management of Sfax University of Sfax

The relationship between financial development and economic growth in China is *** this perspective,this article aims to identify this relationship using both capital market and banking intermediation indicators,which were rarely considered in the previous *** autoregressive model with staggered lags(ARDL)examines the long-run cointegration relationship between 1980 and *** results suggest that the contribution of different subsectors of the Chinese financial system to economic growth *** development of the money market has a negative impact,whereas market capitalization has a positive impact on economic growth in *** the contribution of the banking system to China's economic growth,the two variables measuring the depth of financial institutions showed opposite impacts in both the short and long *** important policy implications,regulators need to ensure a pro-growth environment,effectively regulate the informal banking system,and prevent potential financial risks by revising policies.

关键词： stock markets financial depth economic growth China ARDL

When the Stars Align: Hypertriglyceridemic Pancreatitis Is Inevitable

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International Journal of Clinical Medicine 2024年第7期15卷 233-239页

作者： kamel El-Reshaid Abass Hakim Reji Philip Athyal Department of Medicine Faculty of Medicine Kuwait University Kuwait Kuwait Department of Nephrology Amiri Hospital Ministry of Health Kuwait Kuwait Department of Radiology Amiri Hospital Ministry of Health Kuwait Kuwait

Background: Acute pancreatitis (AP) is an inflammatory process affecting the pancreas. Hypertriglyceridemic AP (HTAP) is its third leading cause after gallstones followed by alcohol use. It develops when stars align viz. triggers (acquired surges) in patients with genetic hypertriglyceridemia. Case: severe and acute pancreatitis had developed in a 57-year-old man with type IIb familial hyperlipidemia after heavy fatty meals. The acute phase was controlled by holding oral intake with weekly Evolocumab therapy and long-term prevention by weight reduction and Fenofibrate alone. His pancreatic endocrine and exocrine functions remained normal after 2 years of follow-up. Conclusion: Those four measures were safe, practical and effective for short- and long-term management of HTAP.

关键词： Fenofibrate Genetic Hypertriglyceridemia Hyperlipidemia Pancreatitis Triggers Weight Reduction

Agmatine ameliorates diabetes type 2-induced nephropathy in rats

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Asian Pacific Journal of Tropical Biomedicine 2024年第1期14卷 8-16页

作者： Fatemah O.kamel Ohoud Shagroud Mai AAlim A.Sattar Ahmad Gamal S Abd El-Aziz Abdulhadi S.Burzangi Duaa Bakhshwin Maha Jamal Shahid Karim Department of Clinical Pharmacology Faculty of MedicineKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Anatomy Faculty of MedicineKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Objective:To assess the nephroprotective potential of agmatine in a rat model of streptozotocin-induced diabetic ***:A single dose of streptozotocin(40 mg/kg)coupled with a fructose diet induced diabetes in Wistar ***(40 and 80 mg/kg)was administered to rats for 12 *** body weight and fasting blood glucose were measured *** level,urine output,total protein,albumin,blood urea nitrogen,creatinine,and cystatin-C were also determined at the end of the ***,superoxide dismutase,glutathione,interleukin-1β,interleukin-6,and tumor necrosis factor-alpha were evaluated in kidney *** study was also performed using hematoxylin and eosin ***:Agmatine at both doses significantly increased final body weight,and lowered fasting blood glucose,urine output,insulin,total protein,albumin,blood urea nitrogen,creatinine,and cystatin-C levels compared with the diabetic group(P<0.05).Inflammatory markers and antioxidant effect were significantly improved in agmatine-treated ***,the histopathological changes in renal structure were ameliorated by agmatine ***:Agmatine alleviates diabetic nephropathy by improving renal functions and reducing inflammation and oxidative *** molecular mechanisms of its nephroprotective actions need to be investigated in future study.

关键词： Agmatine Type 2 diabetes Nephropathy Oxidative stress Nephroprotection

Hydroxychloroquine: A Safe, Effective and Inexpensive Maintenance Therapy for Chronic Spontaneous Urticaria

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International Journal of Clinical Medicine 2024年第6期15卷 225-232页

作者： kamel El-Reshaid Shaima Al-Bader Abdulla Al-Refaee Department of Medicine Faculty of Medicine Kuwait University Kuwait Kuwait Asad Al-Hamad Dermatology Center Ministry of Health Kuwait Kuwait

Background: Chronic spontaneous urticaria (CSU) is an autoimmune skin disorder that lasts for >6 weeks and may last for years. It is a disabling skin disease that impairs quality of life. Set-up treatment with antihistamines, immunosuppressives, immune modulators and lately Omalizumab are expensive or have significant side effects. In this retrospective study, we describe our experience with the use of hydroxychloroquine (HCQ) as a maintenance therapy for those with severe forms of CSU after Corticosteroids (C) induction phase. Patients and Methods: 16 adult patients (aged 44 ± 7) with severe CSU for 5 ± 1 months, were included in the study. Eight patients had attacks of angioneurotic oedema. Their previous treatments were antihistaminic and short-courses of C. Results: After 2 weeks of remission with C and HCQ 200 mg twice daily, the dose of C was tapered down and discontinued by the end of the first month. The seven days Urticaria Activity Score decreased from 30 ± 3 to 6 ± 1 by the first month and remained low at 3 ± 1 by the end of 2 years of follow-up. Moreover, IgE levels and CRP had similar trends. Remission persisted after 37 ± 9 months of follow-up. Conclusion: HCQ is a safe, efficacious and inexpensive drug for the treatment of CSU.

关键词： Autoimmune Disease Chronic Spontaneous Urticaria Corticosteroids Hydroxychloroquine Omalizumab

Systemic Amyloidosis Secondary to Psoriasis: A Rare, Autoimmune and Genetically-Determined Disorder That Is Amenable to Treatment with Cyclosporin A—Cyclosporin A for Psoriasis-Induced Amyloidosis

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Open Journal of Nephrology 2024年第2期14卷 226-232页

作者： kamel El-Reshaid Shaima Al-Bader John Patrick Madda Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Asad Al-Hamad Dermatology Center Kuwait City Kuwait Department of Pathology Amiri Hospital Kuwait City Kuwait

Background: Systemic secondary amyloidosis (SSA) is associated with chronic inflammatory disorders and/or chronic infections. Patients and Methods: Over the past 10 years;a total of 21 patients, with long-term (17 months) and extensive psoriasis (P) with psoriasis area severity index (PASI) >29, were evaluated. Results: Two patients had nephrotic syndrome (proteinuria 3.9 and 3.6 g/day) and decrease creatinine clearance (46 and 62 ml/minute). Their renal biopsy revealed Congo-red (+) nodular glomerulosclerosis that lacked immune-deposits and resisted wash with K-permanganate wash indicating SSA. Three months subsequent to Cyclosporin A (CyA) therapy with 100 mg twice daily;psoriasis improved in all patients with decrease in (PASI) from 29.5 to 3.5 1. In the 2 patients with SSA;proteinuria decreased to 2.1 and 1.8 g/day and creatinine clearance improved to 51 and 69 ml/minute. Such improvement persisted up to 2 years of follow up and up to 78 months in patients with SSA. Conclusion: psoriasis-induced SSA is an autoimmune disease, with genetic predisposition that is amenable to CyA therapy.

关键词： Amyloidosis Psoriasis Nephrotic Syndrome Cyclosporin A

AMachine Learning Approach to Cyberbullying Detection in Arabic Tweets

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Computers, Materials & Continua 2024年第7期80卷 1033-1054页

作者： Dhiaa Musleh Atta Rahman Mohammed Abbas Alkherallah Menhal kamel Al-Bohassan Mustafa Mohammed Alawami Hayder Ali Alsebaa Jawad Ali Alnemer Ghazi Fayez Al-Mutairi May Issa Aldossary Dalal A.Aldowaihi Fahd Alhaidari Department of Computer Science College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Department of Computer Information Systems College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Department of Networks and Communications College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia

With the rapid growth of internet usage,a new situation has been created that enables practicing *** has increased over the past decade,and it has the same adverse effects as face-to-face bullying,like anger,sadness,anxiety,and *** the anonymity people get on the internet,they tend to bemore aggressive and express their emotions freely without considering the effects,which can be a reason for the increase in cyberbullying and it is the main motive behind the current *** study presents a thorough background of cyberbullying and the techniques used to collect,preprocess,and analyze the ***,a comprehensive review of the literature has been conducted to figure out research gaps and effective techniques and practices in cyberbullying detection in various languages,and it was deduced that there is significant room for improvement in the Arabic *** a result,the current study focuses on the investigation of shortlisted machine learning algorithms in natural language processing(NLP)for the classification of Arabic datasets duly collected from Twitter(also known as X).In this regard,support vector machine(SVM),Na飗e Bayes(NB),Random Forest(RF),Logistic regression(LR),Bootstrap aggregating(Bagging),Gradient Boosting(GBoost),Light Gradient Boosting Machine(LightGBM),Adaptive Boosting(AdaBoost),and eXtreme Gradient Boosting(XGBoost)were shortlisted and investigated due to their effectiveness in the similar ***,the scheme was evaluated by well-known performance measures like accuracy,precision,Recall,and ***,XGBoost exhibited the best performance with 89.95%accuracy,which is promising compared to the state-of-the-art.

关键词： Supervised machine learning ensemble learning cyberbullying Arabic tweets NLP