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Research on target recognition and mobile job control of humanoid robot based on KM34Z256 for industrial applications

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International Journal of Intelligent Computing and Cybernetics 2021年第2期14卷 302-318页

作者： Dunhai Wang amit sharma Xi’an International University XianChinaand Jaypee University of Information Technology SolanIndia

Purpose-Humanoid robot has similar shape and action characteristics as humans,and it can complete some basic tasks instead of humans without changing the human environment,which makes humanoid robot become the best structure and help form for robot to provide services for human ***/methodology/approach-The mobile operation control of humanoid robot is generated by the walking movement of humanoid robot’s feet,and the robot’s hand and arm complete grasping and other operations ***-On the basis of humanoid robot,the integrated system of software and hardware based on the KM34Z256 humanoid robot is described first,and a series of kinematics discussion on its mobile operation is carried ***/value-The research based on this project shows that the target recognition and positioning method is not only accurate and of high energy but also can realize the mobile operation of humanoid robot.

关键词： Humanoid robot Target recognition Mobile operation Industrial automation

Quantification of grain boundary effects on the geometrically necessary dislocation density evolution and strain hardening of polycrystalline Mg-4Al using in situ tensile testing in scanning electron microscope and HR-EBsD

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Journal of Magnesium and Alloys 2024年第5期12卷 1815-1829页

作者： Eunji song Mohsen Taheri Andani amit Misra Department of Materials science and Engineering University of MichiganAnn ArborMI 48109USA Department of Mechanical Engineering University of MichiganAnn ArborMI 48109USA Department of Mechanical Engineering Texas A&M UniversityCollege StationTX 77843USA

In situ tensile testing in a scanning electron microscope(sEM)in conjunction with high-resolution electron backscatter diffraction(HR-EBsD)under load was used to characterize the evolution of geometrically necessary dislocation(GND)densities at individual grain boundaries as a function of applied strain in a polycrystalline Mg-4Al *** increase in GND density was investigated at plastic strains of 0%,0.6%,2.2%,3.3% from the area including 76 grains and correlated with(i)geometric compatibility between slip systems across grain boundaries,and(ii)plastic *** develop expressions for the grain boundary GND density evolution as a function of plastic strain and plastic incompatibility,from which uniaxial tensile stress-strain response of polycrystalline Mg-4Al are computed and compared with experimental *** findings in this study contribute to understanding the mechanisms governing the strain hardening response of single-phase polycrystalline alloys and more reliable prediction of mechanical behaviors in diverse microstructures.

关键词： Mg-Al alloys Grain boundaries Geometrically necessary dislocations strain gradient plasticity HR-EBsD

solution‑Processed Thin Film Transparent Photovoltaics:Present Challenges and Future Development

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Nano-Micro Letters 2025年第2期17卷 566-600页

作者： Tianle Liu Munerah M.s.Almutairi Jie Ma Aisling stewart Zhaohui Xing Mengxia Liu Bo Hou Yuljae Cho UM-sJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China school of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK Department of Electrical and Computer Engineering Yale UniversityNew HavenCT 06511USA Energy sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for modern society to sustain economic *** soaring demand for the electrical energy,together with an awareness of the environmental impact of fossil fuels,has been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,limiting their practicality in a dense urban *** overcome the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancements are focused on improving both transparency and power output to rival commercially available silicon solar *** this review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of merit and theoretical limits of TPVs are discussed to comprehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film photovoltaics(PVs),including colloidal quantum dot PVs,metal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with emphasis on agrivoltaics,smart windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent semiconductors solution-processable transparent solar cell Emerging solar cell materials Buildingintegrated photovoltaics

Optimization-Based string Method for Finding Minimum Energy Path

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Communications in Computational Physics 2013年第7期14卷 265-275页

作者： amit samanta Weinan E Program in Applied and Computational Mathematics Princeton UniversityPrincetonNew JerseyUSA Department of Mathematics and Program in Applied and Computational Mathematics Princeton UniversityPrincetonNew JerseyUSA Beijing International Center for Mathematical Research Peking UniversityBeijingChina

We present an efficient algorithm for calculating the minimum energy path(MEP)and energy barriers between local minima on a multidimensional potential energy surface(PEs).such paths play a central role in the understanding of transition pathways between metastable *** method relies on the original formulation of the string method[***.B,66,052301(2002)],*** evolve a smooth curve along a direction normal to the *** algorithm works by performing minimization steps on hyperplanes normal to the *** the problem of finding MEP on the PEs is remodeled as a set of constrained minimization *** provides the flexibility of using minimization algorithms faster than the steepest descent method used in the simplified string method[***.,126(16),164103(2007)].At the same time,it provides a more direct analog of the finite temperature string *** applicability of the algorithm is demonstrated using various examples.

关键词： Rare events string method minimum energy path dislocation nucleation

A Hybrid Brain-Computer Interface for Closed-Loop Position Control of a Robot Arm

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IEEE/CAA Journal of Automatica sinica 2020年第5期7卷 1344-1360页

作者： Arnab Rakshit amit Konar Atulya K.Nagar Artificial Intelligence Lab. Department of Electronics&Tele-Communication EngineeringJadavpur UniversityKolkata 700032India Department of Mathematics Computer Scienceand EngineeringLiverpool Hope UniversityLiverpool L169JDUnited Kingdom IEEE

Brain-Computer interfacing(BCI)has currently added a new dimension in assistive *** braincomputer interfaces designed for position control applications suffer from two fundamental ***,most of the existing schemes employ open-loop control,and thus are unable to track positional errors,resulting in failures in taking necessary online corrective *** are examples of a few works dealing with closed-loop electroencephalography(EEG)-based position *** existing closed-loop brain-induced position control schemes employ a fixed order link selection rule,which often creates a bottleneck preventing time-efficient ***,the existing brain-induced position controllers are designed to generate a position response like a traditional firstorder system,resulting in a large steady-state *** paper overcomes the above two limitations by keeping provisions for steady-state visual evoked potential(ssVEP)induced linkselection in an arbitrary order as required for efficient control and generating a second-order response of the position-control system with gradually diminishing overshoots/undershoots to reduce steady-state *** than the above,the third innovation is to utilize motor imagery and P300 signals to design the hybrid brain-computer interfacing system for the said application with gradually diminishing error-margin using speed reversal at the zero-crossings of positional *** undertaken reveal that the steady-state error is reduced to 0.2%.The paper also provides a thorough analysis of the stability of the closed-loop system performance using the Root Locus technique.

关键词： Brain-computer interfacing(BCI) electroencepha-lography(EEG) Jaco robot arm motor imagery P300 steady-state visually evoked potential(ssVEP)

Two-Dimensional Lattice Boltzmann Model for Droplet Impingement and Breakup in Low Density Ratio Liquids

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Communications in Computational Physics 2011年第8期10卷 767-784页

作者： amit Gupta Ranganathan Kumar Department of Mechanical Engineering Indian Institute of TechnologyNew DelhiIndia 110016 Department of Mechanical Materials and Aerospace EngineeringUniversity of Central FloridaOrlandoFL 32816USA

A two-dimensional lattice Boltzmann model has been employed to simulate the impingement of a liquid drop on a dry *** a range of Weber number,Reynolds number and low density ratios,multiple phases leading to breakup have been *** analytical solution for breakup as function of Reynolds and Weber number based on the conservation of energy is shown to match well with the *** the moment breakup occurs,the spread diameter is maximum;it increases with Weber number and reaches an asymptotic value at a density ratio of *** breakup is found to be more viable for the case when the wall is non-wetting or neutral as compared to a wetting *** breakup,the distance between the daughter droplets is much higher for the case with a non-wetting wall,which illustrates the role of the surface interactions in the outcome of the impact.

关键词： Lattice Boltzmann droplet impingement spread factor breakup

synergistic antioxidant interactions between green tea and Ocimum gratissimum

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Asian Pacific Journal of Tropical Biomedicine 2019年第8期9卷 333-338页

作者： sumaya Farooq amit sehgal Department of Zoology School of Bioengineering and Biosciences Lovely Professional University

Objective: To evaluate the antioxidant interactions between aqueous infusions of green tea and Ocimum gratissimum at different ratios. Methods: Antioxidant activities of aqueous infusion of green tea and Ocimum gratissimum (leaves) alone or in combination at various proportions (3:1, 2:1, 1:1, 1:2, 1:3) were determined by DPPH, ABTs, NO and ex-vivo assays including lipid peroxidation and haemolysis. Total phenolic content and flavonoid content was calculated by Folin-Ciocalteu reagent and aluminum chloride colorimetry method, respectively. A correlation study was also conducted between the antioxidant activity and total phenolic/flavonoid content of various infusions. The interactions were analyzed by combination index applying Compusyn software. Results: Green tea exhibited high radical scavenging ability as compared to Ocimum gratissimum infusion. Combination of green tea and Ocimum gratissimum exhibited moderate antagonism to strong synergistic interaction at various ratios. A strong correlation was found between total phenolic content/total flavonoid content and antioxidant activities of individual infusions (green tea and Ocimum gratissimum). For binary mixture at different ratios, a weak to strong correlation was observed between total phenolic content and antioxidant activity and almost no correlation between total flavonoid content and antioxidant potential. Conclusions: Overall, green tea and Ocimum gratissimum combination (1:1) displayed the highest antioxidant potential and maximum synergism.

关键词： Antioxidant Combination index Green tea Ocimum gratissimum Total phenolic content Total flavonoid content

Gingival enlargements: Differential diagnosis and review of literature

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World Journal of Clinical Cases 2015年第9期3卷 779-788页

作者： amit Arvind Agrawal Department of Periodontics MGV’s KBH Dental college and hospital

Gingival enlargement is one of the frequent features of gingival diseases. However due to their varied presentations, the diagnosis of these entities becomes challenging for the clinician. They can be categorized based on their etiopathogenesis, location, size, extent, etc. Based on the existing knowledge and clinical experience, a differential diagnosis can be formulated. subsequently, after detailed investigation, clinician makes a final diagnosis or diagnosis of exclusion. A perfect diagnosis is critically important, since the management of these lesions and prevention of their recurrence is completely dependent on it. Furthermore, in some cases where gingival enlargement could be the primary sign of potentially lethal systemic diseases, a correct diagnosis of these enlargements could prove life saving for the patient or at least initiate early treatment and improve the quality of life. The purpose of this review article is to highlight significant findings of different types of gingival enlargement which would help clinician to differentiate between them. A detailed decision tree is also designed for the practitioners, which will help them arrive at a diagnosis in a systematic manner. There still could be some lesions which may present in an unusual manner and make the diagnosis challenging. By knowing the existence of common and rare presentations of gingival enlargement, one can keep a broad view when formulating a differential diagnosis of localized(isolated, discrete, regional) or generalized gingival enlargement.

关键词： Differential diagnosis Gingival hyperplasia Gingival overgrowth Gingival diseases Decision tree

Concurrent tubercular and staphylococcus meningitis in a child

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Asian Pacific Journal of Tropical Medicine 2009年第4期2卷 75-76页

作者： amit Agrawal Clinical and Administrative HeadDivision of NeurosurgeryDatta Meghe Institute of Medical SciencesSawangi(Meghe)Wardha 442004 MaharashtraIndia

spontaneous,non-surgical haematogenous staphylococcus aureus meningitis is rare and associated with high *** infection causing meningitis(pyogenic and tubercular) is further rarer,poses a difficult diagnostic and management challenge,which warrants early diagnosis and aggressive *** present a case of concurrent pyogenic and tubercular meningitis in a child managed *** seems that in present case initial pyogenic infection resulted in the immunocompromised state for the child that would had lead to the activation of tubercular foci resulting in tubercular meningitis.

关键词： Tubercular meningitis Bacterial meningitis staphylococcus meningitis staphylococcus Tuberculosis