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Getting physical with medical education:Exercise based virtual anatomy review classes for medical students

World Journal of Methodology 2025年第1期15卷 20-25页

作者： Nadeesha R samarasinghe Taniya s Nagpal Michele L Barbeau Charys M Martin Division of General surgery Faculty of MedicineUniversity of British ColumbiaVancouver V6T 1Z3BCCanada Faculty of Kinesiology Sport and RecreationUniversity of AlbertaEdmonton T6G 2R3ABCanada Anatomy and Cell Biology University of Western OntarioLondon N6A 3K7ONCanada Department of Anatomy and Cell Biology Schulich School of Medicine and DentistryThe University of Western OntarioLondon N6A 3K7ONCanada

The benefits of regular physical activity are well ***,few studies have examined the effectiveness of integrating physical activity(PA)into curricula within a post-secondary *** investigate the incorporation of PA into medical curriculum,we developed a series of optional exercise-based review sessions designed to reinforce musculoskeletal(MsK)anatomy course *** synchronous sessions were co-taught by a group fitness instructor and an anatomy *** fitness instructor would lead students through both strength and yoga style exercises,while the anatomy instructor asked questions about relevant anatomical structures related to course material previously *** the sessions,participants were asked to evaluate the classes on their self-reported exam preparedness in improving MsK anatomy knowledge,PA levels,and mental *** participants completed surveys;a majority agreed that the classes increased understanding of MsK concepts(90.0%)and activity levels(97.7%).Many(70.0%)felt that the classes helped reduce *** majority of respondents(90.0%)agreed that the classes contributed to increased feelings of social ***,medical students saw benefit in PA based interventions to supplement MsK course *** with increasing activity levels and promoting health behaviours,integrating PA into medical curriculum may improve comprehension of learning material,alleviate stress and foster social connectivity among medical students.

关键词： Medical education Musculoskeletal Anatomy Exercise Online learning

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A New Method to Improve Performance of Cooperative Underwater Acoustic Wireless sensor Networks via Frequency Controlled Transmission Based on Length of Data Links

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Wireless sensor Network 2010年第5期2卷 381-389页

作者： vahid Tabataba Vakily Mohammadjavad Jannati 不详

In this paper a new method to improve performance of cooperative underwater acoustic (UWA) sensor networks will be introduced. The method is based on controlling and optimizing carrier frequencies which are used in data links between network nods. In UWA channels Pathloss and noise power spectrum density (psd) are related to carrier frequency. Therefore, unlike radio communications, in UWA Communications signal to noise ratio (sNR) is related to frequency besides propagation link length. In such channels an optimum frequency in whole frequency band and link lengths cannot be found. In Cooperative transmission, transmitter sends one copy of transmitted data packets to relay node. Then relay depending on cooperation scheme, amplifies or decodes each data packet and retransmit it to destination. Receiver uses and combines both received signals to estimate transmitted data. This paper wants to propose a new method to decrease network power consumptions by controlling and sub-optimizing transmission frequency based on link length. For this purpose, underwater channel parameters is simulated and analyzed in 1km to 10km lengths (midrange channel). Then link lengths sub categorized and in each category, optimum frequency is computed. With these sub optimum frequencies, sensors and base station can adaptively control their carrier frequencies based on link length and decrease network’s power consumptions. Finally Different Cooperative transmission schemes “Decode and Forward (DF)” and “Amplify and Forward (AF)”, are simulated in UWA wireless sensor network with and without the new method. In receiver maximum ratio combiner (MRC) is used to combining received signals and making data estimations. simulations show that the new method, called AFC cooperative UWA communication, can improve performance of underwater acoustic wireless sensor networks up to 40.14%.

关键词： Underwater Acoustic Communications Wireless sensor Networks Cooperative Transmission Decode and Forward Amplify and Forward

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An Automated Approach to Passive sonar Classification Using Binary Image Features

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Journal of Marine science and Application 2015年第3期14卷 327-333页

作者： vahid vahidpour Amlr Rastegarnia Azam Khalili Department of Electrical Engineering Malayer University Malayer 65719-95863 1ran

This paper proposes a new method for ship recognition and classification using sound produced and radiated underwater. To do so, a three-step procedure is proposed. First, the preprocessing operations are utilized to reduce noise effects and provide signal for feature extraction. second, a binary image, made from frequency spectrum of signal segmentation, is formed to extract effective features. Third, a neural classifier is designed to classify the signals. Two approaches, the proposed method and the fractal-based method are compared and tested on real data. The comparative results indicated better recognition ability and more robust performance of the proposed method than the fractal-based method. Therefore, the proposed method could improve the recognition accuracy of underwater acoustic targets.

关键词： binary image passive sonar neural classifier ship recognition short-time Fourier transform fractal-based method

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sAGCM avalanche photodiode with additional layer and nonuniform electric field

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Frontiers of Optoelectronics 2013年第2期6卷 199-209页

作者： Abbas GHADIMI vahid AHMADI Fatemeh sHAHsHAHANI Department of Electrical Engineering Science and Research Branch Islamic Azad University Tehran 145151775 Iran Department of Electrical Engineering Tarbiat Modares University Tehran 14115-194 Iran Department of Physics Alzahra University Tehran *** Iran

This paper presents a new method to increase the speed of the separated absorption, grading, charge, and multiplication avalanche photodiode （sAGCM-APD）. This improvement is obtained by adding a new thin charge layer between absorption and grading layers, with assuming the non-uniform electric field in different regions of the structure. In addition, a circuit model of the proposed structure is extracted, using carrier rate equations. Also, to achieve the optimum structure, it is tried to have trade-offs among thickness of the layers and have proper tuning of physical parameters. Eventually, frequency and transient response are investigated and it is shown that, in comparison with the previous conventional structure, significant improvements in gain-bandwidth product, speed and also in breakdown voltage are attained.

关键词： separated absorption grading charge multi- plication avalanche photodiode (sAGCM-APD) electric field nonuniformity additional charge layer

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Palladium installed copper-organic framework for C–C coupling reactions

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science China Chemistry 2025年

作者： Yu-Mei Wang Mei-Xia Tao Kai-Ming Mo Xu Chen shu-Hua Zhong Elena s shubina Guo-Hong Ning Dan Li College of Chemistry and Materials science Guangdong Provincial Key Laboratory of Supramolecular Coordination ChemistryJinan University A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences

The formation of C–C bonds is a crucial aspect of organic synthesis. synthesists' long-term objective is to identify novel catalysts to optimize reaction systems based on traditional transition metal catalysis. This study explores the synthesis and catalytic potential of palladium-installed covalent metal-organic frameworks(CMOFs) based on copper cyclic trinuclear units(Cu-CTUs). By incorporating palladium ions into the imine-based framework JNM-7 through a straightforward immersion method, we achieved a notable enhancement in catalytic activity for critical C–C coupling reactions, including C–H arylation and sonogashira cross-coupling. The resulting JNM-7-Pd demonstrated remarkable stability and recyclability, maintaining its efficiency over at least three cycles without any decline in efficiency.

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Representation of BesilāLand in Kush-Nāme

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sino-Us English Teaching 2023年第6期20卷 203-216页

作者： somayeh Aghajani Kalkhoran vahid Reza Nasrollahi Hankuk University of Foreign studies SeoulSouth Korea seoul National University SeoulSouth Korea

Kush-Nāme,authored by Hakim Iranshan Ibn Abi al-Khair,offers information on Iran,its features,and even its neighbors,as other classical Persian literary works *** some of this historical information may need to be more accurate due to the legendary nature of the work,it is important and worth *** from China,lands such as Makrān,saqlab,Māchin,Besilā,and others are mentioned in Kush-Nā***āis the same as Korea based on the dynasty’s name,other details,and other *** translation of Kush-Nāme into Korean has piqued the interest of many south *** study seeks to extract and,to some extent,examine Besilā’s many political,economic,geographical,and cultural representations in Kush-Nāme,not just to gain a better understanding of this country but this study serves as a foundation for future *** to the research,Besilāwas a remote and prosperous land with a monotheistic people and kingdom,a profitable and prosperous business,a huge army,and beautiful people who sheltered Abtin from the Chinese army and later married Abtin and Farārang,the daughter of BesilāKing and mother of Fereidun,and were somehow involved in Fereidun’s killing of Zahhāk.

关键词： Kush-Nāme Besilā Korea Fereidun Teihur Abtin

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Transcranial Direct Current stimulation in ADHD:A systematic Review of Efficacy,safety,and Protocol-induced Electrical Field Modeling Results

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Neuroscience Bulletin 2020年第10期36卷 1191-1212页

作者： Mohammad Ali salehinejad vahid Nejati Mohsen Mosayebi-samani Ali Mohammadi Miles Wischnewski Min-Fang Kuo Alessio Avenanti Carmelo M・Vicario Michael A.Nitsche Department of Psychology and Neurosciences Leibniz Research Centre for Working Environment and Human Factors44139 DortmundGermany International Graduate school of Neuroscience Ruhr-University Bochum44801 BochumGermany Institute for Cognitive and Brain sciences Shahid Beheshti UniversityTehran ***Iran Department of Psychology Shahid Beheshti UniversityTehran ***Iran Institute of Biomedical Engineering and Informatics Ilmenau University of Technology98693 IlmenauGermany Donders Institute for Brain Cognition and BehaviourRadboud University6525 HR NijmegenThe Netherlands Centro studi e ricerche in Neuroscienze Cognitive Dipartimento di PsicologiaAlma Mater StudiormUniversita di Bologna47521 CesenaItaly Centro de Investigacion en Neuropsicologia y Neurociencias Cognitivas Universidad Catolica del Maule3605 TalcaChile Dipartimento di scienze Cognitive PsicologichePedagogiche e degli studi culturaliUniversita di Messina98121 MessinaItaly Department of Neurology University Medical Hospital Bergmannsheil44789 BochumGermany

Transcranial direct current stimulation(tDCs)is a promising method for altering cortical excitability with clinical *** has been increasingly used in neurodevelopmental disorders,especially attention-deficit hyperactivity disorder(ADHD),but its efficacy(based on effect size calculations),safety,and stimulation parameters have not been systematically *** this systematic review,we aimed to(1)explore the effectiveness of tDCs on the clinical symptoms and neuropsychological deficits of ADHD patients,(2)evaluate the safety of tDCs application,especially in children with ADHD,(3)model the electrical field intensity in the target regions based on the commonly-applied and effective versus less-effective protocols,and(4)discuss and propose advanced tDCs *** the Preferred Reporting Items for systematic Reviews and Meta-Analyses approach,a literature search identified 14 empirical experiments investigating tDCs effects in *** improving effects of tDCs on cognitive deficits(response inhibition,working memory,attention,and cognitive flexibility)or clinical symptoms(e.g.,impulsivity and inattention)are reported in10 *** serious adverse effects are reported in 747 sessions of *** left and right dorsolateral prefrontal cortex are the regions most often targeted,and anodal tDCs the protocol most often *** intensity of 2 mA induced stronger electrical fields than 1 mA in adults with ADHD and was associated with significant behavioral *** ADHD children,however,the electrical field induced by 1 mA,which is likely larger than the electrical field induced by 1 mA in adults due to the smaller head size of children,was sufficient to result in significant behavioral ***,tDCs seems to be a promising method for improving ADHD ***,the clinical utility of tDCs in ADHD cannot yet be concluded and requires further systematic investigation in larger sample *** regions involved in ADHD pathophysio

关键词： Transcranial direct current stimulation Attention-deficit hyperactivity disorder Dorsolateral prefrontal cortex Executive function systematic review Brain modeling Non-invasive brain stimulation Pediatric

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Classification of Cardiovascular Disease Using Feature Extraction and Artificial Neural Networks

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Journal of Biosciences and Medicines 2017年第11期5卷 64-79页

作者： shalin savalia Eder Acosta vahid Emamian Department of Electrical Engineering St. Mary’s University San Antonio USA

Electrocardiogram (ECG) signals are used to identify cardiovascular disease. The availability of signal processing and neural networks techniques for processing ECG signals has inspired us to do research that consists of extracting features of an ECG signals to identify types of cardiovascular diseases. We distinguish between normal and abnormal ECG data using signal processing and neural networks toolboxes in Matlab. Data, which are downloaded from an ECG database, Physiobank, are used for training and testing the neural network. To distinguish normal and abnormal ECG with the significant accuracy, pattern recognition tools with NN is used. Feature Extraction method is also used to identify specific heart diseases. The diseases that were identified include Tachycardia, Bradycardia, first-degree Atrioventricular (AV), and second-degree Atrioventricular. since ECG signals are very noisy, signal processing techniques are applied to remove the noise contamination. The heart rate of each signal is calculated by finding the distance between R-R intervals of the signal. The QRs complex is also used to detect Atrioventricular blocks. The algorithm successfully distinguished between normal and abnormal data as well as identifying the type of disease.

关键词： Electrocardiogram (ECG) Cardiovascular Disease MATLAB Artificial Neural Network Physiobank R-R interval Matlab QRs Complex Atrioventricular Tachycardia Bradycardia

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An Adaptive Method Based on High-Level Petri Nets for E-Learning

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Journal of software Engineering and Applications 2011年第10期4卷 559-570页

作者： Fatemeh Omrani Ali Harounabadi vahid Rafe 不详

Adaptive learning is a new approach for e-learning systems. In comparison to traditional e-learning systems, which present same things for all learners, these systems automatically adapt with learner characteristics. In this paper, we are going to propose a new method for Adaptive learning, and consider adaptation from three viewpoints: 1) learner learning style, 2) learner’s knowledge level, 3) learner’s score. Due to similarity between learning objects graph and petri net, and In order to provide adaptive learning, we use an approach based on a high level petri net (HLPN).Also we propose a method to evaluate performance in this system. We compare our system with a non adaptive system, through our performance evaluating method. The results show response time for our system is less than non adaptive system and learners finish course in a relatively shorter period of time. since our proposed system considers individual features of learner, we can be sure that learner would not be confused in learning materials.

关键词： Adaptive Learning Learning style High Level Petri Nets Response Time

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地下渗滤在大学园区生活污水处理中的应用

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环境工程 2007年第3期25卷 96-98页

作者：朱丽孙理密山东建筑工程学院市政与环境学院济南250101 山东建筑工程学院环保工程设备中心济南250101

地下渗滤工艺是土地生态处理系统的一种类型,其设备简单,投资少,操作管理方便,且能耗低、净化效果好。在此介绍了地下渗滤处理污水系统在大学园区的应用情况,运行结果表明,该工艺结合园区绿地建设不仅可行,而且处理水质优于回用标准,环... 详细信息

地下渗滤工艺是土地生态处理系统的一种类型,其设备简单,投资少,操作管理方便,且能耗低、净化效果好。在此介绍了地下渗滤处理污水系统在大学园区的应用情况,运行结果表明,该工艺结合园区绿地建设不仅可行,而且处理水质优于回用标准,环境效益和经济效益显著。

关键词：地下渗滤生活污水中水回用大学园区

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