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A rate-based robust queue management system through multi-loop internal model controller with initial value compensation

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Journal of Control and Decision 2015年第4期2卷 257-277页

作者： Ladan khoshnevisan Farzad R.Salmasi Faculty of Engineering Electrical Engineering DepartmentUniversity of TehranTehranIran

An efficient congestion control approach should gain weighted fairness and also robustness against external ***,variations in the number of active sources cause a network to operate as a switched system in which the initial values affect the transient *** main contribution of this article is to design a rate-based adaptive robust queue management contemplating the initial value compensation(IVC).The congestion is avoided via Two-Degree-of-Freedom Internal Model Control protocol as a robust *** utilisation factors are designated according to the delay of each source(weighted fairness)in which the sources will use the maximum value of the bottleneck capacity(maximum utilisation).On the other hand,the number of the users is determined adaptively and effects of non-zero initial values are eliminated through a protocol called *** results through Network Simulator 2 and Simulink software confirm the analytical results and the efficacy of the proposed method.

关键词： adaptive robust queue management initial value compensation maximum utilisation switched system weighted fairness

Ab-Initio Study of Cobalt Impurity Effects on Phonon Spectra, Mechanical and Thermal Properties of Single Wall Carbon Nanotube （5,0）

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Chinese Physics Letters 2014年第4期31卷 110-113页

作者： H. Tashakori B. khoshnevisan F. Kanjouri Faculty of Physics University of Kashan Kashan Iran Faculty of Physics Kharazmi University Karaj Iran

We use density functional perturbation theory based on the pseudo-potential to calculate the phonon spectrum, phonon density of states, specific heat capacity and mechanical properties of pristine and cobalt doped （5,0） single wall carbon nanotube （CNT）. In the calculations, we consider one Co atom in the center of the unit cell of the tube and it is shown that the pristine （5~0） CNT is nonmagnetic while the Co-doped tube becomes magnetic. Young＇s modulus for both systems is about 1 TPa （＇after Co-doping it goes slightly higher） and the Poisson ratio for the pristine tube becomes quite a bit larger than the doped one. On the other hand, the calculated value of radial breath mode for the pristine CNT is in good agreement with the experimental reports while after Co-doping it is increased. In addition, heat capacity of the doped CNT is reduced, which leads to some important empirical applications.

关键词： Wall Carbon Nanotube Ab-Initio pseudo-potential

Development of an intelligent system based on ANFIS for predicting wheat grain yield on the basis of energy inputs

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Information Processing in Agriculture 2014年第1期1卷 14-22页

作者： Benyamin khoshnevisan Shahin Rafiee Mahmoud Omid Hossein Mousazadeh Department of Agricultural Machinery Engineering Faculty of Agricultural Engineering and TechnologyUniversity of TehranKarajIran

Energy is regarded as one of the most important elements in agricultural *** the last decades energy consumption in agriculture has increased,so finding the relationship between energy consumption and crop yields in agricultural production can help to achieve sustainable *** this study several adaptive neuro-fuzzy inference system(ANFIS)models were evaluated to predict wheat grain yield on the basis of energy ***,artificial neural networks(ANNs)were developed and the obtained results were compared with ANFIS *** the best ANFIS structure gained in this study,R,RMSE and MAPE were calculated as 0.976,0.046 and 0.4,*** developed ANN was a multilayer perceptron(MLP)with eleven neurons in the input layer,two hidden layers with 32 and 10 neurons and one neuron(wheat grain yield)in the output *** the best ANN model,R,RMSE and MAPE were computed as 0.92,0.9 and 0.1,*** results illustrated that ANFIS model can predict the yield more precisely than ANN.

关键词： Wheat yield Energy consumption Prediction ANFIS ANN

Integral sliding-mode robust observer-based congestion control for wireless access networks

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Journal of Control and Decision 2022年第2期9卷 152-164页

作者： Ladan khoshnevisan Farzad R.Salmasia Xinzhi Liub School of Electrical and Computer Engineering College of EngineeringUniversity of TehranTehranIran bDepartment of Applied Mathematics Faculty of MathematisUniversity of WaterlooWaterlooCanada

Designing a robust active queue management(RAQM)is mandatory to avoid congestion in networks with wireless access links,because transmission control protocol(TCP)can detect con-gestion after its occurrence in a communication network and wireless links suffer from bottleneck capacity variations caused by fading and packet error rate(PER)in the acknowledgement ***,the average window size cannot be measured explicitly from the output signal and input and state delay are imposed to a network,which complicate theRAQMdesign problem in nonlinear ***,the main contribution of this study is to design a robust observer based control procedure based on integral sliding mode protocol to estimate the average window size,to control congestion in a TCP/RAQM network and to compensate input and state ***-ulation results via professional simulator NS-2 and SIMULINK confirm that the procedure can effectively estimate the window size and can robustly avoid congestion.

关键词： Congestion control integral sliding mode robust active queue management(RAQM) robust observer-based control(ROBC) transmission control protocol(TCP) wireless access network

An overview of the role of cancer stem cells in spine tumors with a special focus on chordoma

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World Journal of Stem Cells 2014年第1期6卷 53-64页

作者： Mojdeh Safari Alireza khoshnevisan Department of Chemistry Pharmaceutical Sciences BranchIslamic Azad University Department of Neurosurgery Shariati HospitalTehran University of Medical Sciences

Primary malignant tumors of the spine are relatively rare, less than 5% of all spinal column tumors. However, these lesions are often among the most difficult to treat and encompass challenging pathologies such as chordoma and a variety of invasive sarcomas. The mechanisms of tumor recurrence after surgical intervention, as well as resistance to radiation and chemotherapy, remain a pervasive and costly problem. Recent evidence has emerged supporting the hypothesis that solid tumors contain a sub-population of cancer cells that possess characteristics normally associated with stem cells. Particularly, the potential for long-term proliferation appears to be restricted to subpopulations of cancer stem cells(CSCs) functionally defined by their capacity to self-renew and give rise to differentiated cells that phenotypically recapitulate the original tumor, thereby causing relapse and patient death. These cancer stem cells present a unique opportunity to better understand the biology of solid tumors in general, as well as targets for future therapeutics. The general objective of the current study is to discuss the fundamental concepts for understanding the role of CSCs with respect to chemoresistance, radioresistance, special cell surface markers, cancer recurrence and metastasis intumors of the osseous spine. This discussion is followed by a specific review of what is known about the role of CSCs in chordoma, the most common primary malignant osseous tumor of the spine.

关键词： Spine tumor Chordoma Cancer stem cell Stem cell marker Chemoresistance

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陈木法访谈录

数学译林 2018年第1期37卷 42-53页

作者： Davar khoshnevisan Edward Waymire 欧阳顺湘杨尊明犹他大学俄勒冈州立大学不详

2016年5月9-11日，作为特邀演讲者之一，陈木法教授应邀参加在犹他大学举办的“概率论前沿会议”．陈木法是中国最杰出最有影响力的在世概率论学者之一．他是中国科学院院士、第三世界科学院院士以及美国数学会会士．他和他的学生王凤... 详细信息

2016年5月9-11日，作为特邀演讲者之一，陈木法教授应邀参加在犹他大学举办的“概率论前沿会议”．陈木法是中国最杰出最有影响力的在世概率论学者之一．他是中国科学院院士、第三世界科学院院士以及美国数学会会士．他和他的学生王凤雨一起，为Ricci（里奇）曲率有正下界的流形上拉普拉斯算子的特征值的依赖于曲率下界、流形维数和直径的精确估计发展了有力的概率方法．2005年他在施普林格出版社出版专著《特征值、不等式和遍历理论》，是他在这个深刻又有挑战性的数学领域所作卓越贡献的有力说明．陈木法教授主要在中国生活、工作，偶尔出国游历讲学．他此次行程为我们更多了解他个人以及他过去50年来在概率论领域研究的专业历程提供了机会．下面是两位会议组织者对他的访谈．

关键词：中国科学院院士访谈录第三世界科学院拉普拉斯算子概率论概率方法精确估计遍历理论

Reasons for delayed spinal cord decompression in individuals with traumatic spinal cord injuries in Iran:A qualitative study from the perspective of neurosurgeons

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Chinese Journal of Traumatology 2021年第6期24卷 356-359页

作者： Masoud SohrabiAsl Zahra Ghodsi Roya Habibi Arejan Zahra Azadmanjir Mahdi Sharif-Alhoseini Moein Khormali Maryam Shojaei Abbas Rahimiforoushani Alireza khoshnevisan Alexander R.Vaccaro Michael G.Fehlings Vafa Rahimi-Movaghar Sina Trauma and Surgery Research Center Tehran University of Medical SciencesTehranIran Rehabilitation Office State Welfare Organization of IranTehranIran Health Information Management Department Tehran University of Medical Sciences Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehranIran Department of Neurosurgery Shariati HospitalTehran University of Medical SciencesTehran Iran Department of Orthopaedics and Neurosurgery Thomas Jefferson University and the Rothman InstitutePhiladelphiaPAUSA Department of Surgery University of TorontoSenior Scientist Krembil Brain Institute and McEwen Centre for Regenerative MedicineToronto Western HospitalUniversity Health NetworkCanada Universal Scientific Education and Research Network(USERN) TehranIran Institute of Biochemistry and Biophysics University of TehranTehranIran Visiting Professor Spine ProgramUniversity of TorontoTorontoCanada Brain and Spinal Cord Injury Research Center Neuroscience InstituteTehran University of Medical SciencesTehranIran

Purpose:The median time from the event leading to the spinal cord injury(SCI)to the time of decompressive surgery is estimated to be 6.9 days in Iran,which is much longer than the proposed ideal time(less than 24 h)in published *** current qualitative study aimed to determine the reasons for the observed decompression surgery delay in Iran from the perspective of ***:This qualitative study is designed to perform content analysis on the gathered data from face-to-face semi-structured interviews with 12 Iranian ***:The findings of the current study suggest that patient-related factors constitute more than half of the codes extracted from the ***,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the main factors causing delayed spinal cord decompression in Iranian patients from the perspective of *** notable factors include delay in transferring patients to the trauma center,delay in availability of necessary equipment,and scarce medical ***:In the perspective of neurosurgeons,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the leading reasons for delayed decompressive surgery of individuals with SCI in Iran.

关键词： Spinal cord injuries Decompression Surgical Neurosurgeons Iran Qualitative research

Effects of neurofeedback on the short-term memory and continuous attention of patients with moderate traumatic brain injury： A preliminary randomized controlled clinical trial

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Chinese Journal of Traumatology 2017年第5期20卷 278-282页

作者： Reza Rostami Payman Salamati Kourosh Karimi Yarandi Alireza khoshnevisan Soheil Saadat Zeynab Sadat Kamali Somaie Ghiasi Atefeh Zaryabi Seyed Shahab Ghazi Mir Saeid Mehdi Arjipour Mohammad Saeid Rezaee-Zavareh Vafa Rahimi-Movaghar Department of Psychology Tehran University Tehran Islamic Republic of Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Islamic Republic of Iran Department of Neurosurgery School of Medicine Shariati Hospital Tehran University of Medical Sciences TehranIran Department of Psychology Kharazmi University Tehran Islamic Republic of Iran Department of Clinical Psychology AUame Tabatabaei University Tehran Iran Students' Research Committee Baqiyatallah University of Medical Sciences Tehran Islamic Republic of Iran

Purpose： There are some studies which showed neurofeedback therapy （NET） can be effective in clients with traumatic brain injury （TBI） history. However, randomized controlled clinical trials are still needed for evaluation of this treatment as a standard option. This preliminary study was aimed to evaluate the effect of NET on continuous attention （CA） and short-term memory （STM） of clients with moderate TBI using a randomized controlled clinical trial （RCT）. Methods： In this preliminary RCT, seventeen eligible patients with moderate TBl were randomly allo- cated in two intervention and control groups. All the patients were evaluated for CA and STM using the visual continuous attention test and Wechsler memory scale-4th edition （WMS-IV） test, respectively, both at the time of inclusion to the project and four weeks later. The intervention group participated in 20 sessions of NFT through the first four weeks. Conversely, the control group participated in the same NF sessions from the fifth week to eighth week of the project. Results： Eight subjects in the intervention group and five subjects in the control group completed the study. The mean and standard deviation of participants＇ age were （26.75 ~ 15.16） years and （2Z60 ＋_ 8.17） years in experiment and control groups, respectively. All of the subjects were male. No significant improvement was observed in any variables of the visual continuous attention test and WMS-IV test between two groups （p _~ 0.05）. Conclusion： Based on our literature review, it seems that our study is the only study performed on the effect of NET on TBl patients with control group. NET has no effect on CA and STM in patients with moderate TBI. More RCTs with large sample sizes, more sessions of treatment, longer time of follow-up and different orotocols are recommended.

关键词： Neurofeedback Brain injuries Attention Short-term memory