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A Stable Numerical Scheme Based on the Hybridized Discontinuous Galerkin Method for the Ito-Type Coupled KdV System

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Communications on Applied Mathematics and Computation 2022年第4期4卷 1351-1373页

作者： Shima Baharlouei reza mokhtari Nabi Chegini Department of Mathematical Sciences Isfahan University of Technology84156-83111 IsfahanIran Department of Mathematics Tafresh University39518-79611 TafreshIran

The purpose of this paper is to develop a hybridized discontinuous Galerkin(HDG)method for solving the Ito-type coupled KdV *** fact,we use the HDG method for discre-tizing the space variable and the backward Euler explicit method for the time *** linearize the system,the time-lagging approach is also *** numerical stability of the method in the sense of the L2 norm is proved using the energy method under certain assumptions on the stabilization parameters for periodic or homogeneous Dirichlet bound-ary *** experiments confirm that the HDG method is capable of solving the system *** is observed that the best possible rate of convergence is achieved by the HDG ***,it is being illustrated numerically that the corresponding con-servation laws are satisfied for the approximate solutions of the Ito-type coupled KdV *** to the numerical experiments,it is verified that the HDG method could be more efficient than the LDG method for solving some Ito-type coupled KdV systems by comparing the corresponding computational costs and orders of convergence.

关键词： Hybridized discontinuous Galerkin(HDG)method Stability analysis Ito-type coupled KdV system Conservation laws

A Local Discontinuous Galerkin Method for Two-Dimensional Time Fractional Diffusion Equations

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Communications on Applied Mathematics and Computation 2020年第4期2卷 689-709页

作者： Somayeh Yeganeh reza mokhtari Jan SHesthaven Department of Mathematical Sciences Isfahan University of TechnologyIsfahan 84156-83111Iran EPFL-SB-MATHICES-MCSS École Polytechnique Fédéral de Lausanne1015 LausanneSwitzerland

For two-dimensional(2D)time fractional diffusion equations,we construct a numerical method based on a local discontinuous Galerkin(LDG)method in space and a finite differ-ence scheme in *** investigate the numerical stability and convergence of the method for both rectangular and triangular meshes and show that the method is unconditionally *** results indicate the effectiveness and accuracy of the method and con-firm the analysis.

关键词： Two-dimensional(2D)time fractional difusion equation Local discontinuous Galerkin method(LDG) Numerical stability Convergence analysis

Perspective on dietary isothiocyanates in the prevention,development and treatment of cancer

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Journal of Cancer Metastasis and Treatment 2020年第1期6卷 271-286页

作者： Herman Yeger reza Bayat mokhtari The Hospital for Sick Children Program in Developmental and Stem Cell BiologyTorontoON M5G 0A4Canada Department Biomedical&Molecular Sciences Botterell Hall Rm 827Queen’s UniversityKingstonON K7L 3N6Canada

Epidemiological evidence has highlighted the association of specific diets and a lower incidence of ***,the Mediterranean diet provides high levels of polyphenolics and a high consumption of healthier fats,e.g.,as from olive *** the Mediterranean region the consumption of vegetables is elevated providing a class of compounds,the isothiocyanates(ITCs)as found in the cabbage *** ITCs have raised great interest for their health benefits over the past few *** of the key ITC compounds,sulforaphane,phenethylisothiocyanate and benzyl isothiocyanate,have been studied in vitro and in vivo and the data support their promise for cancer chemoprevention,as anti-tumor agents,and for chemoprotection of normal tissues and *** with other polyphenolic compounds in the diet,in general,they also possess key anti-inflammatory properties thus satisfying the criteria for compounds that could intervene in cancer initiation and *** this review we provide a larger overview of the advantages of including ITCs in the diet as food or as supplements and speculate on what could constitute a valuable therapeutic strategy for improving and sustaining good health and countering cancer disease in humans.

关键词： Mediterranean diet isothiocyanates chemoprevention chemoprotection anti-tumor hormesis mitohormesis anti-inflammatory

The effect of green tea mouthwash (<i>Camellia sinensis</i>) on wound healing following periodontal crown lengthening surgery;a double blind randomized controlled trial

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Open Journal of Stomatology 2012年第4期2卷 369-372页

作者： Ali Forouzanfar Hamid reza Arab Hooman Shafaee Majid reza mokhtari Shayan Golestani Department of Orthodontics Mashhad University of Medical Sciences Mashhad Iran Oral and Maxillofacial Diseases Research Center School of Dentistry Mashhad University of Medical Sciences Mashhad Iran

Green tea has been used as a traditional medicine since 2700 BC and several studies have shown that green tea polyphenols inhibit the growth of oral and periodontal pathogenic bacteria and can improve oral and gingival health. In this clinical study we investigated the effect of green tea mouthwash on microbial dental plaque and gingival inflammation following periodontal surgery. A total of 34 crown lengthening surgeries were included in this study. After removing periodontal dressing, green tea mouthwash for the test group and placebo for the patients in the control group were prescribed, and periodontal parameters were assessed at base line and after 2 weeks. Analysis of the data revealed the significant effect of green tea mouthwash on reducing Plaque index (PI), Gingival Index (GI) and Bleeding on probing (BOP). Therefore it would be recommended as a safe, anti-inflammatory and anti-microbial mouthwash for treating gingival inflammation and maintaining oral and gingival health.

关键词： Green Tea Antibacterial Dental Plaque Periodontal Surgery

Modified Widman flap procedure: With or without periodontal dressing?

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Open Journal of Stomatology 2012年第3期2卷 170-172页

作者： Habib Ghanbari Ali Forouzanfar Kazem Fatemi Majid reza mokhtari Maryam Abrishami Zahra Ebrahiminik Fateme Farazi Department of Periodontics School of Dentistry Mashad University of Medical Sciences Mashad Iran

Aim: The purpose of this study was to evaluate the postoperative pain experience and gingival indexes with and without the use of periodontal dressing after Modified Widman flap procedure. Materials and Methods: Twenty patients requiring comparable bilateral flap procedures were selected. One quadrant of each jaw randomly received periodontal dressing after the surgery while the other one didn’t. Plaque Index (PI), Sulcus Bleeding Index (SBI) and Probing Depth (PD) were measured prior to the surgery, one week and 2 weeks after the surgery. Postoperative pain experience also was assessed at the conclusion of study. Results: Results showed no significant differences between dressed and undressed segments regarding changes in probing depth, plaque index or sulcus bleeding index. However patients reported significantly less pain postoperatively when the dressing was used Conclusion: Pain is reduced by periodontal dressing but No significant differences between dressed and undressed segments regarding changes in probing depth, plaque index or sulcus bleeding index.

关键词： Periodontal Dressing Periodontal Surgery Pain

Soil Organic Carbon Pools in Particle-Size Fractions as Affected by Slope Gradient and Land Use Change in Hilly Regions,Western Iran

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Journal of Mountain Science 2012年第1期9卷 87-95页

作者： Parisa mokhtari KARCHEGANI Shamsollah AYOUBI Mohammad reza MOSADDEGHI Naser HONARJOO Department of Soil Science College of AgricultureIslamic Azad UniversityKhorasgan BranchIsfahanIran Departmnet of Soil Science College of AgricultureIsfahan University of Technology84156-83111IsfahanIran.

This study was conducted to explore the effects of topography and land use changes on particulate organic carbon(POC),particulate total nitrogen(PTN),organic carbon(OC) and total nitrogen(TN) associated with different size primary particle fractions in hilly regions of western *** popular land uses in the selected site including natural forest(NF),disturbed forest(DF) and cultivated land(CL) and three slope gradients(0-10 %,S1,10-30 %,S2,and 30-50%,S3) were employed as the basis of soil sampling.A total of 99 soil samples were taken from the 0-10 cm surface layer in the whole studied hilly region *** results showed that the POC in the forest land use in all slope gradients was considerably more than the deforested and cultivated lands and the highest value was observed at NF-S1 treatment with 9.13%.The values of PTN were significantly higher in the forest land use and in the down slopes(0.5%) than in the deforested and cultivated counterparts and steep slopes(0.09%) except for the CL land *** C:N ratios in POC fraction were around 17-18 in the forest land and around 23 in the cultivated *** forest land,the silt-associated OC was highest among the primary *** enrichment factor of SOC,EC,was the highest for *** the primary particles,EC of both primary fractions of silt and clay showed following trend for selected land uses and slope gradients:CL> DF> NF and S3 > S2> *** gradient of landscape significantly affected the OC and TN contents associated with the silt and clay particles,whereas higher OC and TN contents were observed in lower positions and the lowest value was measured in the steep ***,the results showed that native forest land improves soil organic carbon storage and can reduce the carbon emission and soil erosion especially in the mountainous regions with high rainfall in west of Iran.

关键词： Land use change Soil organic carbon Slope gradient Physical fractionation Particulate organic carbon

Serendipity in Recommender Systems:A Systematic Literature Review

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Journal of Computer Science & Technology 2021年第2期36卷 375-396页

作者： reza Jafari Ziarani reza Ravanmehr Department of Computer Engineering Central Tehran BranchIslamic Azad UniversityTehran ***Iran

A recommender system is employed to accurately recommend items,which are expected to attract the user's *** over-emphasis on the accuracy of the recommendations can cause information over-specialization and make recommendations boring and even *** and diversity are two partly useful solutions to these ***,novel and diverse recommendations cannot merely ensure that users are attracted since such recommendations may not be relevant to the user's ***,it is necessary to consider other criteria,such as unexpectedness and *** is a criterion for making appealing and useful *** usefulness of serendipitous recommendations is the main superiority of this criterion over novelty and *** bulk of studies of recommender systems have focused on serendipity in recent ***,a systematic literature review is conducted in this paper on previous studies of serendipity-oriented recommender ***,this paper focuses on the contextual convergence of serendipity definitions,datasets,serendipitous recommendation methods,and their evaluation ***,the trends and existing potentials of the serendipity-oriented recommender systems are discussed for future *** results of the systematic literature review present that the quality and the quantity of articles in the serendipity-oriented recommender systems are progressing.

关键词： systematic literature review recommender system serendipity evaluation metric evaluation method

Epidemiological evidence of mosquito-borne viruses among persons and vectors in Iran:A study from North to South

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Virologica Sinica 2022年第1期37卷 149-152页

作者： Abbas Ahmadi Vasmehjani Farhad rezaei Mohammad Farahmand Talat mokhtari-Azad Mohammad reza Yaghoobi-Ershadi Mohsen Keshavarz Hamid reza Baseri Morteza Zaim Mahmood Iranpour Habibollah Turki Mohammad Esmaeilpour-Bandboni Department of Virology School of Public HealthTehran University of Medical SciencesTehran14156446Iran Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehran14156446Iran The Persian Gulf Tropical Medicine Research Center The Persian Gulf Biomedical Sciences Research InstituteBushehr University of Medical SciencesBushehr***Iran Department of Entomology University of ManitobaR3T 2N2Canada Infectious and Tropical Diseases Research Center Hormozgan Health InstituteHormozgan University of Medical SciencesBandar Abbas***Iran School of Nursing Midwifery and ParamedicineGuilan University of Medical SciencesRasht***Iran

Dear Editor,Arthropod-borne viruses are a group of the most important emerging *** cause a range of diseases in vertebrate hosts and threaten human health(Gan and Leo,2014).The global distribution of arboviruses is as... 详细信息

关键词： conditions. diseases viruses

Cooperative Neuro Adaptive Control of Leader Following Uncertain Multi-Agent Systems with Unknown Hysteresis and Dead-Zone

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Journal of Systems Science & Complexity 2020年第2期33卷 312-332页

作者： SHAHNAZI reza Department of Electrical Engineering Faculty of EngineeringUniversity of GuilanRasht ***Iran

In this paper,a cooperative adaptive control of leader-following uncertain nonlinear multiagent systems is *** communication network is weighted undirected graph with fixed *** uncertain nonlinear model for each agent is a higher-order integrator with unknown nonlinear functions,unknown disturbances and unknown input ***,the gains of input actuators are unknown nonlinear functions with unknown *** most common behaviors of input actuators in practical applications are hysteresis and *** this paper,backlash-like hysteresis and dead-zone are used to model the input *** universal approximation theorem proved for neural networks,the unknown nonlinear functions are *** unknown weights of neural networks are derived by proposing appropriate adaptive *** cope with modeling errors and disturbances an adaptive robust structure is *** Lyapunov synthesis approach not only all the adaptive laws are derived but also it is proved that the closed-loop network is cooperatively semi-globally uniformly ultimately bounded(CSUUB).In order to investigate the effectiveness of the proposed method,it is applied to agents modeled with highly nonlinear mathematical equations and inverted *** results demonstrate the effectiveness and applicability of the proposed method in dealing with both numerical and practical multi-agent systems.

关键词： Adaptive neural network backlash-like hysteresis dead-zone leader-following multi-agent systems weighted undirected graph