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CPW Fed Double T-Shaped Array Antenna with Suppressed Mutual Coupling

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International Journal of Communications, Network and System Sciences 2010年第2期3卷 190-195页

作者： A. DANIDEH A. A. lotfi NEYESTANAK 不详

A compact CPW-fed double T-Shaped antenna is proposed for dual-band wireless local area network (WLAN) operations. For the proposed antenna, the -10 dB return loss bandwidth could reach about 25.5% for the 2.4 GHz band and 5.7 % for the 5 GHz band, which meet the required bandwidth specification of WLAN standard. To reduce the mutual coupling and get high isolation between two dual-band antennas, we proposed the novel electromagnetic band gap (EBG) structures. When the EBG structure is employed, a -13dB and -30dB mutual coupling reduction is achieved at 2.4 and 5.2 GHz. It shows that the features of small size, uniplanar structure, good radiation characteristics and small mutual coupling are promising for multi-input multi-output (MIMO) applications.

关键词： CPW T-Shaped Antenna WLAN MIMO Mutual Coupling

Effects of rhubarb(Rheum ribes L.)syrup on dysenteric diarrhea in children:a randomized,double-blind,placebo-controlled trial

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Journal of Integrative Medicine 2017年第5期15卷 365-372页

作者： Ali Khiveh Mohammad Hashem Hashempur Mehrdad Shakiba Mohammad Hassan lotfi Afsaneh Shakeri Seid Kazem Kazemeini Zohre Mousavi Marzie Jabbari Mohammad Kamalinejad Majid Emtiazy Department of Traditional Medicine Faculty of Iranian Traditional MedicineShahid Sadoughi University of Medical SciencesArdakanYazd ***Iran Noncommunicable Diseases Research Center Fasa University of Medical SciencesFasa ***Iran Department of Pediatrics Shahid Sadoughi University of Medical SciencesYazd ***Iran Department of Biostatistics and Epidemiology Faculty of HealthShahid Sadoughi University of Medical SciencesYazd ***Iran Department of Traditional Medicine School of Iranian Traditional MedicineTehran University of Medical SciencesTehran ***Iran Department of Pharmacognosy Faculty of PharmacyShahid Beheshti University of Medical SciencesTehran ***Iran Research Center of the Iranian Traditional Medicine Shahid Sadoughi University of Medical SciencesYazd ***Iran

BACKGROUND：Rheum ribes *** a plant native to China,Iran,Turkey,India,and a few other *** activity is considered to be one of its important properties according to various systems of traditional *** increasing rate of bacterial resistance to antibiotics has led to treatment failure in some cases of shigellosis in children,and underlines a need for safe,efficient and valid ***：The purpose of this study is to evaluate the efficacy of *** syrup as a complementary medicine for treatment of shigellosis in ***,SETTING,PARTICIPANTS AND INTERVENTIONS：This randomized,doubleblind,placebocontrolled trial started with a group of 150 children aged between 12–72 months with suspected Shigella *** syrup or placebo syrup was administered to the intervention and control groups,respectively for 5 *** addition,the standard antibiotic treatment（ceftriaxone for the first 3 days and cefixime syrup for 2 further days）was administered to both *** OUTCOME MEASURES：Body temperature,abdominal pain,need for antipyretics,defecation frequency,stool volume and consistency and microscopic stool examination were recorded as outcome *** observed adverse effects were also ***：Mean duration of fever and diarrhea in the *** group was significantly lower than that in the placebo group（P=0.016 and 0.001,respectively）.In addition,patients in the *** group showed shorter duration of need for antipyretics and shorter duration of abdominal pain（P=0.012 and 0.001,respectively）.However,there were no significant differences between the two groups regarding the microscopic stool ***,no adverse effect was ***：*** syrup can be recommended as a complementary treatment for children with Shigella dysentery.

关键词： traditional Persian medicine herbal medicine Rheum ribes L rhubarb dysentery shigellosis diarrhea

A Survey on Recent Approaches in the Design of Band Notching UWB Antennas

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Journal of Electromagnetic Analysis and Applications 2012年第2期4卷 77-84页

作者： Mohammad Jahanbakht Abbas Ali lotfi Neyestanak Department of Electronic Engineering Islamic Azad University Shahr-e-Qods Branch Tehran Iran Department of Engineering Islamic Azad University Shahre Rey Branch Tehran Iran

According to federal communication commission (FCC) rules, the 3.1 - 10.6 GHz band is allocated to the amateur ultra wideband (UWB) applications. On the other hand, the 5.15 - 5.825 GHz band is associated with the wireless LAN (WLAN) applications according to IEEE 802.11 and HIPERLAN/2 standards. Therefore, an unwanted intrusion will be expected between these two frequency requests. In This paper a comprehensive review will be done over a wide range of UWB microstrip antennas which all have the band notching property over the WLAN band to effectively avoid this interference. All the band notching techniques in the recent papers will be categorized in 4 distinct methods including the tuning stub, the shaped slot, the parasitic element, and the fractal geometry. A few typical papers will be introduced and evaluated in each category for declaration purposes. At last, a comparison will be done between these methods and the relative papers.

关键词： Ultra Wideband Band Notching Microstrip Antenna Survey Paper

A Fault Tolerance Algorithm for Resource Discovery in Semantic Grid Computing Using Task Agents

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Journal of Software Engineering and Applications 2014年第4期7卷 256-263页

作者： Masoud Barati Soheil lotfi Azizallah Rahmati Department of Computer Engineering Kangavar Branch Islamic Azad University Kangavar Iran Department of Computer Engineering Kermanshah Science and Research Branch Islamic Azad University Kermanshah Iran

One of the interesting topics in grid computing systems is resources discovery. After the failure of a resource in a chain of resources made for a specific task in grid environment, discovering and finding a new resource that reconstructs the chain is an important topic. In this study, with defining new agent that is called task agent, and by proposing an algorithm, we will increase the fault tolerance against probable failure of a resource in the resource chain.

关键词： Grid Computing Resource Agent Task Agent Ontology Semantic Similarity Function

Wideband Demodulator Based on Five-Port Correlator for Channel Sounding Applications

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Journal of Electromagnetic Analysis and Applications 2013年第2期5卷 79-84页

作者： Imen Sfar lotfi Osman Ali Gharsallah 不详

We present in this paper a wideband RF demodulator using a five-port correlator and a power detector for channel sounding applications. The demodulator has been fabricated using microstrip components. The correlator receives from the five-port qualities that allow it to be low-cost and less sensitive to the phase and amplitude imbalances. A calibration procedure is proposed to find the complex envelope of the RF signal applied at the input of the five-port correlator. Simulation with Advanced Design System software and measurement results have been conducted to demonstrate its capabilities as a RF signal demodulator operating in a wideband around 2.4 GHz frequency.

关键词： Calibration Procedure Channel Sounder Diode Power Detector Five-Port Correlator

基于分裂基-2/(2a)FFT算法的卷积神经网络加速性能的研究

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电子与信息学报 2017年第2期39卷 285-292页

作者：伍家松达臻魏黎明 SENHADJI lotfi 舒华忠东南大学计算机网络和信息集成教育部重点实验室南京210096 法国国家医学与健康研究院U1099 雷恩35000 雷恩一大信号与图像处理实验室雷恩35000 中法生物医学信息研究中心南京210096

卷积神经网络在语音识别和图像识别等众多领域取得了突破性进展,限制其大规模应用的很重要的一个因素就是其计算复杂度,尤其是其中空域线性卷积的计算。利用卷积定理在频域中实现空域线性卷积被认为是一种非常有效的实现方式,该文首先... 详细信息

卷积神经网络在语音识别和图像识别等众多领域取得了突破性进展,限制其大规模应用的很重要的一个因素就是其计算复杂度,尤其是其中空域线性卷积的计算。利用卷积定理在频域中实现空域线性卷积被认为是一种非常有效的实现方式,该文首先提出一种统一的基于时域抽取方法的分裂基-2/(2a)1维FFT快速算法,其中a为任意自然数,然后在CPU环境下对提出的FFT算法在一类卷积神经网络中的加速性能进行了比较研究。在MNIST手写数字数据库以及Cifar-10对象识别数据集上的实验表明:利用分裂基-2/4 FFT算法和基-2 FFT算法实现的卷积神经网络相比于空域直接实现的卷积神经网络,精度并不会有损失,并且分裂基-2/4能取得最好的提速效果,在以上两个数据集上分别提速38.56%和72.01%。因此,在频域中实现卷积神经网络的线性卷积操作是一种十分有效的实现方式。

关键词：信号处理深度学习卷积神经网络快速傅里叶变换

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FOREWORD

FOREWORD

Dose Rate Calculation in the Vicinity of the Tunisian Gamma Irradiation

第11届国际模糊系统协会世界大会

作者： lotfi A.Zadeh

＜正＞ When I wrote my first paper on fuzzy sets in 1965, I could not have imagined that forty years later I would be writing a foreword to the Proceedings of the 11th EFSA Congress in Beijing - a modern capital of one of the most rapidly developing countries in the *** 1965 paper was motivated, in the main, by a perception that well-fitting models of human-centric systems could not be constructed through the use of techniques based on bivalent logic and probability theory. Such systems play a dominant role in fields such as economics, psychology, linguistics, biology and medicine, among others. An idea which occurred to me in the early sixties was that the problem lay in the assumption that classes have sharply defined boundaries and that truth is bivalent. Once the problem was identified, the concept of a fuzzy set was an obvious remedy.

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World Journal of Nuclear Science and Technology 2013年第1期3卷 28-32页

作者： Elassaad Jemii Malek Mazouz lotfi Ghedira Département de Physique Faculté des Sciences de Monastir Université de Monastir Monastir Tunisia

Dose rates calculations, in PMMA dosimeters, placed in the vicinity of the Tunisian 60Co gamma ray irradiator, have been achieved using a pencil like model. The obtained results are in good agreement with recent experimental data. Moreover, in this work we determine also the conversion factor between the dose rate deposited in a PMMA dosimeter and the one deposited in a reel medium. This factor is used to determine the dose deposited in a real irradiated medium such as foodstuff products.

关键词： Dose Rate 60Co Gamma Source GEANT4

The Contribution of Artificial Intelligence Tools in Screening for Cancer of the Cervix

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Computer Technology and Application 2011年第6期2卷 479-486页

作者： Guesmi Lamia Nabli lotfi Bedoui Mohamed Hedi Laboratoire Technology and Medical Imaging Faculty of Medicine Ibn Sina Street 5019 Monastir Tunisia Higher Institute of Applied Science and Technology of Sousse Box Sousse 4000 Tunisia National Engineering School of Monastir Route de Kairouan （ENIM） Monastir 5000 Tunisia Research Unit： Automatic Signal Processing and Imaging （ATSI ENIM） Monastir 5000 Tunisia

Recently, research into pathological cytology were intended to put in places of artificial intelligence systems based on the development of new diagnostic technologies and the cell image segmentation. These technologies are not intended to substitute the human expert but to facilitate his task. The objective of this work is to develop a method for diagnosing cancer cervical smears using cervical-vaginal segmented to build the authors’ database and a human supervisor and as an automatic tool manage and monitor the execution of the operation of diagnostic and proposing corrective actions if necessary. The Supervisor Smart is manufactured by the technique of neural networks with a success rate of 43.3% followed by the technique of fuzzy logic with a success rate equal to 56.7% and finally to improve this rate we used neuro-fuzzy approach which has a rate which reaches 94%.

关键词：人工智能系统子宫颈癌智能工具筛选诊断技术神经网络技术模糊逻辑技术图像分割