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Multi-Agent Systems Verification and Validation

通讯和计算机（中英文版） 2010年第8期7卷 1-8页

作者： tamer Fouad Mabrouk Shawkat Kamal Guirguis Department of Computer Engineering Alexandria Higher Institute of Engineering ＆ Technology Alexandria 21311 Egypt Department of lnformation Technology Institute of Graduate Studies and Research Alexandria University Alexandria 832 Egypt

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Reconfigurable 3/6 dB Novel Branch Line Coupler

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Open Journal of Antennas and Propagation 2017年第1期5卷 7-22页

作者： tamer Gaber Abouelnaga Ashraf Shawky Mohra Microstrip Circuits Department Electronics Research Institute Giza Egypt Faculty of Engineering Benha University Qalyubia Egypt

In this paper, a new idea of reconfigurable 3/6 dB branch line coupler is proposed. The proposed coupler is tuned through a simple open and short circuit at the coupler’s branches’ edges. At the short edges case, a 3 dB branch line coupler is obtained. In this case, the coupler’s branches are considered as microstrip transmission lines with 0.3 mm slot width which is etched in each coupler’s branch. At the open edges case, the coupler’s branches are considered as asymmetric coupled microstrip lines. In this case, a 6 dB branch line coupler is obtained. Both CST and IE3D simulators are used to optimize the reconfigurable 3/6 dB branch line coupler dimensions. As a prototypes, two BLCs are designed, analyzed and tested at the “on” and “off” states at 2.5 GHz. The measured S-parameters confirm the proposed concept of the reconfigurable 3/6 dB branch line coupler.

关键词： Branch Line Coupler Microstrip Lines Asymmetric Coupled Microstrip Lines 3/6 dB Coupler

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Comparative Cost Benefit Analysis of Different Solid Waste Management Scenarios in Basrah, Iraq

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Journal of Environmental Protection 2011年第5期2卷 555-563页

作者： Sherien Elagroudy tamer Elkady Fikry Ghobrial Sanitary and Environmental Section Faculty of Engineering Ain Shams University Cairo Egypt

Solid Waste Management (SWM) system in Basrah has deteriorated recently to the point that only limited waste collection is undertaken in certain urban areas and disposal is largely to uncontrolled dump sites. In this study, the technical, economical, and environmental aspects of three SWM scenarios were investigated aiming to compare the scenarios and select the most appropriate one for implementation. Scenario 1 was to consider waste disposal into a sanitary landfill. Scenario 2 added waste transportation to transfer station before disposal to a sanitary landfill. Scenario 3 considered waste sorting, recycling and composting followed by landfill disposal in an integrated treatment disposal facility. The current open dumping practice was considered as the baseline scenario. According to economic analysis, the benefits from the revenues of selling the produced recyclables and compost did not improve the ranking of scenario 3. However, scenario 3 has gained positive recognition due to the environmental benefits of waste recycling. Therefore, final recommendations were in favour of scenario 3, which has been approved by the UNICEF, as well. Currently the recommended scenario is under implementation in Basrah, Iraq.

关键词： Cost-Benefit Analysis Environmental Analysis Economical Cost Integrated SWM Plan

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Using simulation in complementary medicine education:an overview of clinical trials

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TMR Integrative Medicine 2022年第14期6卷 1-6页

作者： tamer Aboushanab Saad Baslom Monear Qoqandi Department of Complementary medicine Saudi German HealthJeddah 23521Saudi Arabia.

Backgroundand Aim:Using simulation in learning medical interventions is a common *** techniques provided a safe environment for trainees and students to acquire clinical skills and knowledge to practice in a real clinical *** aim of this review is to assess the use of health simulation in the field of complementary medicine ***:Three medical databases were searched from inception to 15 November *** inclusion criteria were clinical trials that used simulation in the field of complementary medicine training and in English language and the full text can be ***:After searching,495 articles were retrieved,235 articles were excluded for duplication and 249 articles were excluded after screening of titles/abstracts and applying inclusion and exclusion ***,11 articles were included in this *** clinical trials had 719 participants and reported positive impact of using simulation in complementary medicine ***:Simulation wasused for training of some complementary medicine therapies such as chiropractic,acupuncture,massage therapy,cupping therapy and *** simulation in complementary medicine education is recommended to ensure a safe environment for *** high quality clinical trials to evaluate the use of simulation in complementary medicine education is highly recommended.

关键词： simulation chiropractic acupuncture cupping therapy osteopathy complementary medicine

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Bioplastic production in terms of life cycle assessment:A state-of-theart review

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Environmental Science and Ecotechnology 2023年第3期15卷 14-34页

作者： Sameh Samir Ali Esraa A.Abdelkarim tamer Elsamahy Rania Al-Tohamy Fanghua Li Michael Kornaros Antonio Zuorro Daochen Zhu Jianzhong Sun Biofuels Institute School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013PR China Botany Department Faculty of ScienceTanta UniversityTanta31527Egypt State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbinHeilongjiang Province150090China Laboratory of Biochemical Engineering&Environmental Technology(LBEET) Department of Chemical EngineeringUniversity of Patras26504PatrasGreece Department of Chemical Engineering Materials and EnvironmentSapienza University00184RomeItaly

The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consumption *** concept of biowaste refineries as a feasible alternative to petroleum refineries has gained *** has become an important raw material source for developing bioproducts and ***,effective environmental biowaste management systems for the production of bioproducts and biofuels are crucial and can be employed as pillars of a circular ***,typically plastics manufactured from bio-based polymers,stand to contribute to more sustainable commercial plastic life cycles as part of a circular economy in which virgin polymers are made from renewable or recycled raw *** frameworks and strategies are utilized to model and illustrate additional patterns in fossil fuel and bioplastic feedstock prices for various governments'long-term *** review paper highlights the harmful impacts of fossil-based plastic on the environment and human health,as well as the mass need for eco-friendly alternatives such as biodegradable *** new types of bioplastics derived from renewable resources(e.g.,biowastes,agricultural wastes,or microalgae)and choosing the appropriate end-of-life option(e.g.,anaerobic digestion)may be the right direction to ensure the sustainability of bioplastic *** regulation and financial incentives are still required to scale from niche polymers to large-scale bioplastic market applications with a truly sustainable impact.

关键词： Biowaste Bioeconomy Bioplastic Life cycle assessment Biofuel

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Social distancing and testing as optimal strategies against the spread of COVID-19 in the Rio Grande Valley of Texas

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Infectious Disease Modelling 2021年第1期6卷 729-742页

作者： Kristina P.Vatcheva Josef Sifuentes tamer Oraby Jose Campo Maldonado Timothy Huber María Cristina Villalobos School of Mathematical&Statistical Sciences University of Texas Rio Grande ValleyBrownsvilleTX78520USA School of Mathematical&Statistical Sciences University of Texas Rio Grande ValleyEdinburgTX78539USA School of Medicine The University of Texas Rio Grande ValleyEdinburgTX78539USA

At the beginning of August 2020,the Rio Grande Valley(RGV)of Texas experienced a rapid increase of coronavirus disease 2019(abbreviated as COVID-19)cases and *** study aims to determine the optimal levels of effective social distancing and testing to slow the virus spread at the outset of the *** use an age-stratified eight compartment epidemiological model to depict COVID-19 transmission in the community and within *** a simulated 120-day outbreak period data we obtain a post 180-days period optimal control strategy *** results show that easing social distancing between adults by the end of the 180-day period requires very strict testing a month later and then daily testing rates of 5%followed by isolation of positive *** social distancing rates in adults from 50%to 25%requires both children and seniors to maintain social distancing rates of 50%for nearly the entire period while maintaining maximum testing rates of children and seniors for 150 of the 180 days considered in this *** have higher contact rates which leads to transmission based on our model,emphasizing the need for caution when considering school reopenings.

关键词： COVID-19 Mathematical modeling Optimal control Rio Grande Valley(RGV) Testing and social distancing School reopening

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Comparative Study between Shortened versus Standard Protocols of Postpartum Magnesium Sulphate Regimen in the Treatment of Eclampsia

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Open Journal of Obstetrics and Gynecology 2021年第8期11卷 935-939页

作者： Nermeen Mohamed Hefila tamer Mamdouh Abdeldayem Department of Obstetrics and Gynecology Faculty of Medicine Alexandria University Alexandria Egypt

Eclampsia is one of the most sever, life-threatening diseases occurred in pregnancy, MgSO4 is the best drug used for its treatment. In this study, the comparison between shortened regimen of MgSO4 versus standard Zuspan course in controlling eclampsia was done. This study performed along one year (July 2019-July 2020) at El Shatby Maternity University Hospital, 40 eclamptic patients presenting at the emergency unit were randomized. Group A received the standard Zuspan regimen of magnesium sulphate and group B received short course in which the patients received only two doses of intravenous magnesium

关键词： MgSO4 Eclampsia MgSO4 Protocols

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The Impact of Single Low Dose IV Magnesium Sulphate Adjuvant to Ultrasound Guided Transverses Abdominis Plain Block for Control of Postcesarean Pain

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Open Journal of Obstetrics and Gynecology 2017年第3期7卷 269-280页

作者： tamer Nabil Abd Elrahman Mohamed Abdelaziz Youssry Anesthesia and Intensive Care and Pain Department Faculty of Medicine Ain Shams University Cairo Egypt Obstetrics and Gynecology Department Faculty of Medicine Alexandria University Alexandria Egypt

Objective: The aim of this study is to determine the role of preoperative low dose intravenous MgSO4 when given adjuvant to ultrasound guided transversus abdominis plane (TAP) block in augmenting postcesarean analgesic effects and reducing opioid requirements during the first 24 hours. Subjects and Methods: In this prospective, randomized double blind study, a total of sixty full term pregnant women were recruited for the study underwent caesarean section. Thirty patients were assigned to MgSO4 group (A) and another thirty to placebo group (B). Participants in group (A) received 50 mg/kg MgSO4 in 100 ml isotonic saline intravenous (IV) over 20 minutes prior to induction of general anesthesia by 30 minutes while participants in group (B) received 100 ml isotonic saline (placebo) by the same route and over the same duration as control. Results: Visual Analogue Scale (VAS) was analysed within 24 hours postoperatively. The mean pain score at 6 and 12 hours postoperatively was significantly lower in MgSO4 group compared to control group (40.4 ± 5.12 vs 53.6 ± 4.92;26.1 ± 3.01 vs 35.5 ± 3.98 respectively, p = 0.012, 0.005). Comparing both groups regarding the mean time interval of first rescue analgesia (morphine sulphate) requested by the patients, it was longer in MgSO4 group compared to control group. The total dose of rescue analgesia consumed during 24 hours was analysed and it was significantly higher in control group compared to MgSO4 group (10.1 ± 0.95 vs 6.2 ± 0.87, p = 0.001). Conclusion: We concluded that preoperative low doses (50 mg/Kg) of MgSO4 with general anesthesia combined with ultrasound guided TAP block offer longer postoperative pain free periods thus reducing total opioid consumption. In addition to the safety of the drug to the mother and fetus so we recommend IV MgSO4 as an adjuvant therapy with TAP block.

关键词： Transversus Abdominis Plane Block Magnesium Sulphate Postcesarean Analgesia Rescue Analgesia

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Management of Hepatocellular Carcinoma: Updated Review

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Journal of Cancer Therapy 2013年第2期4卷 536-545页

作者： tamer Elbaz Mohamed El Kassas Gamal Esmat Endemic Medicine and Hepatogastroenterology Department Faculty of Medicine Cairo University Cairo Egypt Hepatology Department National Hepatology and Tropical Medicine Research Institute Cairo Egypt.

Hepatocellular carcinoma (HCC) represents one of the most challenging potentially curable tumors with high incidence, prevalence and mortality rates. For proper assessment, prognosis estimation and treatment decisions, at least seven important guidelines and staging systems were designated. Proper treatment needs the interaction of multidisciplinary HCC clinic to choose the most appropriate line of treatment. The different modalities of management include resection (surgery or transplantation), local ablation, chemoembolization, radioembolization and molecular targeted therapies with a wide range of investigational drugs that developed after the FDA approved sorafenib. Downstaging and bridging are two important strategies to manage HCC patients who will undergo liver transplantation to improve their postoperative survival. Finally, survival and prognosis depends on several prognostic factors that are either patient related or tumor related. In our study, we aim to provide an updated comprehensive review of the different aspects of liver cancer management starting from staging systems to the different applied treatment modalities.

关键词： Hepatocellular Carcinoma Staging Molecular Targeted Therapies

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Group Method of Data Handling for Modeling Magnetorheological Dampers

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Intelligent Control and Automation 2013年第1期4卷 70-79页

作者： Khaled Assaleh tamer Shanableh Yasmin Abu Kheil Department of Computer Science and Engineering American University of Sharjah Sharjah United Arab Emirates Department of Electrical Engineering American University of Sharjah Sharjah United Arab Emirates Mechatronics Graduate Program American University of Sharjah Sharjah United Arab Emirates

This paper proposes the use of Group Method of Data Handling (GMDH) technique for modeling Magneto-Rheological (MR) dampers in the context of system identification. GMDH is a multilayer network of quadratic neurons that offers an effective solution to modeling non-linear systems. As such, we propose the use of GMDH to approximate the forward and inverse dynamic behaviors of MR dampers. We also introduce two enhanced GMDH-based solutions. Firstly, a two-tier architecture is proposed whereby an enhanced GMD model is generated by the aid of a feedback scheme. Secondly, stepwise regression is used as a feature selection method prior to GMDH modeling. The proposed enhancements to GMDH are found to offer improved prediction results in terms of reducing the root-mean-squared error by around 40%.

关键词： System Identification Magneto-Rheological Dampers Group Method of Data Handling Polynomial Classifier

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