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A generalized three-dimensional failure criterion for rock masses

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Journal of Rock Mechanics and Geotechnical Engineering 2012年第4期4卷 333-343页

作者： ashok jaiswal B.K.Shrivastva Department of Mining Engineering Indian Institute of Technology (Banaras Hindu University)

The smooth convex generalized failure function, which represents 1/6 part of envelope in tile deviatoric plane, is proposed. The proposed function relies on four shape parameters （L, a, b and c）, in which two parameters （a and b） are dependent on the others. The parameter Ls is called extension ratio. The proposed failure function could be incorporated with any two-dimensional （2D） failure criteria to make it a three-dimensional （3D） version. In this paper, a mathematical formulation for incorporation of Hoek-Brown failure criterion with the proposed function is presented. The Hoek-Brown failure criterion is the most suited 2D failure criterion tbr geomaterials. Two types of analyses for best-fitting solution of published true tri-axial test data were made by considering （1） constant extension ratio and （2） variable extension ratio. The shape and strength parameters for different types of rocks have been determined by best-fitting the published true tri-axial test data for both the analyses. It is observed from the best-fitting solution by considering uniform extension ratio （L~） that shape constants have a correlation with Hoek-Brown strength parameters. Thus, only two parameters （c~. and m） are needed for representing the 3D failure criterion for intact rock. The statistical expression between shape and Hoek-Brown strength parameters is given. In the second analysis, when considering varying extension ratio, another parameterfis introduced. The modified extension ratio is related tofand extension ratio. The results at minimum mean misfit for all the nine rocks indicate that the range off varies from 0.7 to 1.0. It is found that mean misfit by considering varying extension ratio is lower than that in the first analysis. But it requires three parameters. A statistical expression betweenfand Hoek-Brown strength parameters has been established. Though coefficient of correlation is not reasonable, we may eliminate it as an extra parameter. At the end of the paper, a me

关键词： three-dimensional (3D) failure criterion Hoek-Brown failure criterion true tri-axial test deviatoric plane

Reply to Discussion on "A generalized three-dimensional failure criterion for rock masses"

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Digital-Twin Enabled Time Ahead Resource Allocation for Integrated Fiber-Wireless Connected Vehicular Network

第13届全国岩石动力学学术会议

作者： ashok jaiswal B.K.Shrivastva Department of Mining Engineering Indian Institute of Technology(Banaras Hindu University)Varanasi 221005India

General:jaiswal and Shrivastva(2012) proposed the mathematical formulations,*** J-S criterion for converting generalized H-B failure criterion into 3D smooth convex failure criterion at deviatoric *** J-S strength criterion is in two versions:uniform and variable extension *** has been observed from the analysis that at uniform extension ratio,the required strength parameters are only UCS and m(other parameters such as L,a,b and c are related with m).In the case of variable extension ratio,extra parameter f is required along with UCS and ***,it has minimal strength parameters compared to You strength criterion,Further-

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Journal of Communications and Information Networks 2024年第3期9卷 296-308页

作者： Akshita Gupta Saurabh jaiswal Martin Maier Vivek ashok Bohara Anand Srivastava Wirocomm Research Group Department of Electronics&Communication EngineeringIndraprastha Institute of Information Technology Delhi(IIITD)New Delhi 110020India Department of Computer Science&Applied Mathematics Indraprastha Institute of Information Technology Delhi(IIITD)New Delhi 110020India Optical Zeitgeist Laboratory Institute National de la Recherche ScientifiqueMontreal H5A 1K6Canada

The digital twin(DT)is envisaged as a catalyst for pioneering ecosystems of service provision within an immersive environment born from the convergence of virtual and physical ***,DT could enhance the performance of edge-intelligent connected vehicular networks by allocating network resources efficiently based on the key performance indicators(KPIs)of vehicular data ***,this work addresses the key challenge of computation and spectrum resource allocation for vehicular *** allocate the optimal resource allocation,we subdivided the problem into:traffic classification,collective learning,and resource allocation *** order to do so,this paper concentrates on two crucial vehicular applications:brake application and lane-change *** utilize a random forest model to collectively learn vehicular data traffic in the upcoming time ***,a time-ahead resource allocation algorithm is proposed to improve the quality of service(QoS)by intelligently offloading vehicular data traffic to a DT-based integrated fiber-wireless(Fi-Wi)connected vehicular *** evaluate the performance of the resource allocation strategy in terms of resources required by the network alongside the packet loss *** was observed that there was a 44.74%increase in cost as the total computation resources increased from F=50 to 100 GHz,whereas the PLR of the network decreased by 71.43%.

关键词： connected vehicles digital twin edgeintelligence fiber-wireless machine learning resource allocation

Near-infrared observations of the Be/X-ray binary pulsar A0535+262

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Research in Astronomy and Astrophysics 2012年第2期12卷 177-186页

作者： Sachindra Naik Blesson Mathew D.P.K.Banerjee N.M.ashok Rajeev R.jaiswal Astronomy and Astrophysics Division Physical Research Laboratory

We present the results obtained from extensive near-infrared （IR） spectro- scopic and photometric observations of the Be/X-ray binary A0535＋262/HDE 245770 at different phases of its - 111 d orbital period. This observation campaign is part of the monitoring program of selective Be/X-ray binary systems aimed at understanding X-ray and near-IR properties at different orbital phases, especially during the perias- tron passage of the neutron star. The near-IR observations presented here were carried out using the 1.2 m telescope at the Mt. Abu IR Observatory. Though the source was relatively faint for spectroscopic observations with the 1.2 m telescope, we monitored the source closely during the 2011 February-March giant X-ray outburst to primarily investigate whether any drastic changes in the near-IR JHK spectra took place at the periastron passage. Changes of such a striking nature were expected to be detectable in our spectra. Photometric observations of the Be star show a gradual and systematic fading in the JHK light curves since the onset of the X-ray outburst, which could suggest a mild evacuation/truncation of the circumstellar disk of the Be companion. Near-IR spectroscopy of the object shows that the JHK spectra are dominated by the emission lines of hydrogen Brackett and Paschen series and HeI lines at 1.0830, 1.7002 and 2.0585 μm. The presence of all the hydrogen emission lines in the JHK spectra, along with the absence of any significant change in the continuum of the Be companion during X-ray quiescent and X-ray outburst phases, suggests that the near- IR line emitting regions of the disk are not significantly affected during the X-ray outburst.

关键词： infrared: stars - Be binaries - stars: individual (A0535+262) - tech-niques: spectroscopic

Instability Analysis of Mosquito Fascicle under Compressive Load with Vibrations and Microneedle Design

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Journal of Bionic Engineering 2015年第3期12卷 443-452页

作者： Sanket jaiswal Sreekumar Muthuswamy Indian Institute of lnformation Technology Design and Manufacturing (IIITD&M) Kancheepuram Chennai - 600127 India

Mosquito has the ability to penetrate the skin with painless insertion. It has attracted the researchers to mimic the bite and develop a painless microneedle. Mosquito applies axial compressive load along with frequency on fascicle to penetrate the human skin and retract if it senses instability prior to insertion. The mechanism of mosquito bite is studied in this work which is divided into two stages for analysis considering different boundary conditions. The probing behaviour of mosquito is considered as stage I and the process of penetration as stage II. An equivalent mechanical model for stage I is proposed and a mathematical model is developed to understand the instability of fascicle in terms of frequency and magnitude of force applied. The governing equation and associated boundary conditions are simplified into Mathieu equation and regions of dynamic instability are obtained through the solution. Results confirm instability of the fascicle during stage I of insertion. The probing behaviour of mosquito is discussed in terms of applied force and vibrating frequency. Horizontal reaction forces exerted by labium on fascicle during buckling improve the stability and enable fascicle to withstand high compressive forces. The analysis and results are utilized to set design guidelines for the development of dynamically stable vibration-assisted microneedle.

关键词： biommimetics mosquito proboscis instability analysis Mathieu equation microneedle design

Optimality Conditions and Duality for Nondifferentiable Multiobjective Semi-Infinite Programming Problems with Generalized(C,α,ρ,d)-Convexity

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Journal of Systems Science & Complexity 2015年第1期28卷 47-59页

作者： MISHRA Shashi Kant jaiswal Monika HOAI AN Le Thi Department of Mathematics Banaras Hindu University Laboratory of Theoretical and Applied Computer Science LITA UFR MIMUniversity of Lorraine

This paper obtains sufficient optimality conditions for a nonlinear nondifferentiable multiobjective semi-infinite programming problem involving generalized(C,α,ρ,d)-convex *** authors formulate Mond-Weir-type dual model for the nonlinear nondifferentiable multiobjective semiinfinite programming problem and establish weak,strong and strict converse duality theorems relating the primal and the dual problems.

关键词： Duality generalized convexity optimality conditions semi-infinite programming.

Molecular mechanism of noradrenaline during the stress-induced major depressive disorder

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Neural Regeneration Research 2018年第7期13卷 1159-1169页

作者： Kenjiro Seki Satomi Yoshida Manoj Kumar jaiswal Department of Pharmacology School of Pharmaceutical ScienceOhu University Department of Psychiatry Icahn School of Medicine at Mount Sinai

Chronic stress-induced depression is a common hallmark of many psychiatric disorders with high morbidity ***-induced dysregulation of noradrenergic system has been implicated in the pathogenesis of *** of monoamine in the brain has been believed to be the main causative factor behind pathophysiology of major depressive disorder（MDD） and several antidepressants functions by increasing the monoamine level at the synapses in the ***,it is undetermined whether the noradrenergic receptor stimulation is critical for the therapeutic effect of *** to noradrenergic receptor stimulation,it has been suggested that the desensitization of β-adrenoceptor is involved in the therapeutic effect of *** addition,enhanced noradrenaline（NA） release is central response to stress and thought to be a risk factor for the development of ***,fast acting antidepressant suppresses the hyperactivation of noradrenergic neurons in locus coeruleus（LC）.However,it is unclear how they alter the firing activity of LC *** inconsistent reports about antidepressant effect of NA-reuptake inhibitors（NRIs） and enhanced release of NA as a stress response complicate our understanding about the pathophysiology of *** this review,we will discuss the role of NA in pathophysiology of stress and the mechanism of therapeutic effect of NA in *** will also discuss the possible contributions of each subtype of noradrenergic receptors on LC neurons,hypothalamic-pituitary-adrenal axis（HPA-axis） and brain derived neurotrophic factor-induced hippocampal neurogenesis during stress and therapeutic effect of NRIs in MDD.

关键词： major depression stress noradrenaline noradrenaline-reuptake inhibitors serotonin receptors hypothalamic-pituitary-adrenal axis locus coeruleus selective serotonin reuptake inhibitors serotonin noradrenaline-reuptake inhibitors

A framework for the sustainability implications of 3D bioprinting through nature-inspired materials and structures

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Bio-Design and Manufacturing 2022年第2期5卷 412-423页

作者： Ruban Whenish Seeram Ramakrishna Amit Kumar jaiswal Geetha Manivasagam Center for Biomaterials Cellular and Molecular TheranosticsVellore Institute of TechnologyVelloreTamilnadu 632014India Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1119260Singapore

Introduction The climax of the industrial revolution was marked by the rapid growth of industry,and advancement in technologies have further fueled this industrial expansion,leading to a surge in economic *** technolo... 详细信息

关键词： printing advancement revolution

Biophysical interactions between silver nanoparticle-albumin interface and curcumin

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Journal of Pharmaceutical Analysis 2020年第2期10卷 164-177页

作者： Vinod D.jaiswal P.M.Dongre Department of Biophysics University of MumbaiVidyanagariSantacruzMumbai400098India

Active targeted drug delivery methods facilitate effective uptake of functionalized nanoparticles through receptor-mediated *** recent years,albumin-nanoparticle interaction has been critically examined so that this functionalized nanoparticle can be efficiently loaded with *** present investigation aims at understanding the adsorption of Bovine Serum Albumin(BSA)on Silver Nano-particle(SNP)surface,preparation of soft conjugates(SC)and hard conjugates(HC)of BSA-functionalized SNP(SNP-BSA),and their interaction with curcumin(CUR).HC contains tightly bound BSA whereas SC involves tightly and loosely bound *** in the hydrodynamic radii of conjugates was observed upon SNP incubation with increased concentration of *** different SNP-BSA conjugate ratios were selected to study their interaction with *** spectroscopy showed a strong association between CUR and SNP:BSA ***,binding varied with a change in the conjugate *** Dichroism(CD)/Fourier Transform Infrared(FTIR)spectroscopy revealed the alterations in the secondary structure of BSA upon CUR binding to the *** potential data indicated stable conjugate *** in SNP:BSA conjugate was found to have a higher half-life as compared to the *** believe that this is the first biophysical characterization report of conjugates that can be effectively extrapolated for targeted drug delivery.

关键词： CUR Bovine serum albumin Silver nanoparticles Soft conjugates Hard conjugates Spectroscopy