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1

Deep neural network and ANN ensemble for slope stability prediction

Gupta A., Aggarwal Y., Aggarwal P.

Archives of Materials Science and Engineering

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2022

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Vol. 116, nr 1

14--27

EN

Purpose: Application of deep neural networks (DNN) and ensemble of ANN with bagging for estimating of factor of safety (FOS) of soil stability with a comparative performance analysis done for all techniques. Design/methodology/approach: 1000 cases with different geotechnical and similar Geometrical properties were collected and analysed using the Limit Equilibrium based Morgenstern-Price Method with input variables as the strength parameters of the soil layers, i.e., Su (Upper Clay), Su (Lower Clay), Su (Peat), angle of internal friction (φ), Su (Embankment) with the factor of safety (FOS) as output. The evaluation and comparison of the performance of predicted models with cross-validation having ten folds were made based on correlation-coefficient (CC), Nash-Sutcliffe-model efficiency-coefficient (NSE), root-mean-square-error (RMSE), mean-absolute-error (MAE) and scattering-index (S.I.). Sensitivity analysis was conducted for the effects of input variables on FOS of soil stability based on their importance. Findings: The results showed that these techniques have great capability and reflect that the proposed model by DNN can enhance performance of the model, surpassing ensemble in prediction. The Sensitivity analysis outcome demonstrated that Su (Lower Clay) significantly affected the factor of safety (FOS), trailed by Su (Peat). Research limitations/implications: This paper sets sight on use of deep neural network (DNN) and ensemble of ANN with bagging for estimating of factor of safety (FOS) of soil stability. The current approach helps to understand the tangled relationship of various inputs to estimate the factor of safety of soil stability using DNN and ensemble of ANN with bagging. Practical implications: A dependable prediction tool is provided, which suggests that model can help scientists and engineers optimise FOS of soil stability. Originality/value: Recently, DNN and ensemble of ANN with bagging have been used in various civil engineering problems as reported by several studies and has also been observed to be outperforming the current prevalent modelling techniques. DNN can signify extremely changing and intricate high-dimensional functions in correlation to conventional neural networks. But on a detailed literature review, the application of these techniques to estimate factor of safety of soil stability has not been observed.

2

An extension of line spring model for vibration analysis of thin isotropic plate containing multiple part-through cracks: an analytical approach

Jain N. K., Gupta A., Salhotra R., Rawani A. M., Soni S., Mishra A., Joshi P. V.

Vibrations in Physical Systems

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2018

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Vol. 29

art. no. 2018022

EN

In the present study, the effect of multiple part-through cracks on the vibration characteristics of thin isotropic rectangular plate is presented. The proposed analytical model is developed using Kirchhoff’s classical plate theory and the crack terms are formulated using the simplified Line Spring Model (LSM). The application of Berger's formulation helps to transform the derived governing equation in the form of well known Duffing equation with cubic nonlinearities and then the solution for final governing equation is obtained using Galerkin's method for two different boundary conditions. The fundamental frequency of the plate as affected by the number of cracks, cracks length, cracks orientation, and plate aspect ratio for different boundary condition is presented. It is found that the results obtained for natural frequencies are maximally affected by number of cracks, crack length and orientations.

3

E-Assessment Tools for Programming Languages: A Review

Gupta S., Gupta A.

Annals of Computer Science and Information Systems

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2018

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Vol. 14

65--70

EN

Continuous Evaluation and feedback not only helps in improving learning of a student, but also acts as a constant motivator to put in more efforts. But then, feedback and assessment are very difficult and time consuming in practice. Thus, automating the entire system of assessment, evaluation and feedback will be highly beneficial. But, building such tools for all courses is yet not feasible. However, e-assessment tools for programming courses in Computer Science discipline can be developed. In this paper, we review various grading techniques used by these tools to assess a student's programming assignment. Further, this paper discusses various types and features of tools according to which an appropriate tool should be selected. And, in the end, we will be highlighting the extent to which students and instructors are actually benefited by these tools.

4

Some fixed point theorems for almost (GF, δb)-contractions and application

Nashine H. K., Agarwal R. P., Shukla S., Gupta A.

Fasciculi Mathematici

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2017

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Nr 58

123--143

EN

We propose a new notion of multi-valued almost (GF, δb)-contractions involving rational terms under δ-distance on b-metric spaces and give its relevance to fixed point results in orbitally complete b-metric spaces. An ordered version of our main result is also proved with some weaker contractive conditions. Some examples are given to show the usability of the results proved herein. Moreover, application of our result to the nonlinear integral equation is given.

5

Ulam-Hyers stability theorem by tripled fixed point theorem

Gupta A.

Fasciculi Mathematici

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2016

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Nr 56

77--97

EN

This paper deals with tripled fixed point theorem, and the approach is based on Perov-type fixed point theorem for contractions in metric spaces endowed with vector-valued metrics. We are also study Ulam-Hyers stability results for the tripled fixed points of a triple of contractive type single-valued and respectively multi-valued operators on complete metric spaces.

6

Automated credibility assessment on twitter

Lorek K., Suehiro-Wiciński J., Jankowski-Lorek M., Gupta A.

Computer Science

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2015

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Vol. 16 (2)

157--168

EN

In this paper, we make a practical approach to automated credibility assessment on Twitter. We describe the process behind the design of an automated classifier for information credibility assessment. As an addition, we propose practical implementation of TwitterBOT, a tool which is able to score submitted tweets while working in the native Twitter interface.

7

Dental Ergonomics to Combat Musculoskeletal Disorders: A Review

Gupta A., Ankola A. V., Hebbal M.

International Journal of Occupational Safety and Ergonomics

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2013

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Vol. 19, No. 4

561--571

EN

Musculoskeletal disorders (MSDs) are significant workplace problems affecting occupational health, productivity and the careers of dental professionals. The prevalence of MSDs is on the rise for all types of dental workers. In spite of different patterns of work culture, there are parallel levels of symptoms in dentists across nations. Risk factors for MSDs are multifactorial. Symptoms appear very early in careers, with higher prevalence of MSDs even during educational training. Ergonomics improvements, health promotion and organizational interventions are necessary to reduce the risk. An interdisciplinary approach with progressive efforts should be taken to address MSDs in dental professionals.

8

Multiplier sequence spaces of fuzzy numbers defined by a Musielak-Orlicz function

Raj K., Gupta A.

Journal of Mathematics and Applications

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2012

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Vol. 35

69--81

EN

In this paper we introduce some multiplier sequence spaces of fuzzy number by using a Musielak-Orlicz function ℳ = (Mk) and multiplier function u = (uk) and prove some inclusion relations between the resulting sequences spaces.

9

Thin-layer chromatographic separations of some common pesticides on mixed stannic oxide-silica gel G layers

Nabi S. A., Gupta A., Khan M. A., Islam A.

Acta Chromatographica

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2002

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No. 12

201-210

EN

Thin-layer chromatography (TLC) of fourteen important organophos-phorus, organochlorine, and pyrethroid pesticides has been performed on mixed stannic oxide-silica gel G layers. The results of these studies reveal that this new combination has promising potential for separation of pesticides. RF values of these pesticides have been determined after development with a variety of mixed aqueous and organic mobile phases. Several important and difficult separations of synthetic pesticide mixtures were achieved on the basis of the different transport of the pesticides by the different mobile phases. The practical utility of these separations has been demonstrated by quantitative determination of monocrotophos, dimethoate, and malathion in soil samples.

10

Propagation of torsional surface waves in a heterogeneous half-space under a rigid layer

Dey S., Gupta S., Gupta A., Prasad A.

Acta Geophysica Polonica

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2001

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Vol. 49, nr 1

113-118

EN

The paper discusses the possibility of propagation of torsional surface waves in a heterogeneous half-space under a rigid layer. The study reveals that, under the assumed conditions, torsional surface waves propagate in the medium. The velocities of torsional surface waves have been calculated numerically and are presented in a graph. It is observed that as the density of the medium increases the velocity of torsional wave front increases too. As a particular case it has been shown that in a homogeneous half-space under a rigid layer, a torsional wave does not propagate.

11

Predicting the Development of Pre-invasive Neoplastic Bronchial Epithelial Lesions from Biopsies

Barranco-Mendoza A., Clem C., Gupta A., Fizzano P., Guillaud M.

Archives of Control Sciences

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1999

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Vol. 9, no. 1/2

25-40

EN

Lung cancer accounts for 28% of all cancer deaths in North America. However current treatment options lead to a cure in only 10% of these cases. It is well known that the survival rates can be improved by the early detection of pre-invasive lesions which are believed to be the possible precursors of malignant tumors. Although new technology is allowing numerous early lesions to be detected, it is becoming clear that only a small percentage of these will progress to cancer. A fundamental problem in the analysis of biopsies, i.e., longitudinal two-dimensional (2-D) sections of the central area of the lesions, is the quantification of tissue heterogeneity. One can distinguish abnormal cells from normal cells and analyse their spatial arrangement, but it is currently impossible in the case of pre-invasive lesions in the early stages, that is, when just a few abnormal cells are present in the biopsy, to tell if one observed pattern is more aggressive than another one. In this paper a stochastic model for the growth of pre-invasive neoplastic bronchial epithelial cells is presented. The results are analysed to differentiate progressive lesions from regressive ones given a particular biopsy. The problem is initially simplified to taking a one-dimensional (1-D) cross-section from a 2-D process and estimating the maximum likelihood rate of growth based on this limited information. We propose a number of extensions to eventually extend this approach to the higher dimension model by analysing 2-D sections and estimating their growth rates in a three-dimensional (3-D) process.

12

Paper electrophoretic separation of phenolic compounds with acetate and citrate buffer electrolytes: determination of some important phenolic compounds in blood

Nabi S. A., Sikarwar A., Gupta A.

Acta Chromatographica

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1998

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No. 8

162-174

EN

Paper electrophoresis of 35 phenolic compounds has been performed with acetate and citrate buffers of varying pH. The study revealed a number of important binary and ternary separations. A few important quantitative separations were achieved: (i) resorcinol from quinol, catechol, coumaric acid, 3,4-dihydroxycinnamic acid and pyrogal-lol; (ii) a-naphthol from b-naphthol; and (iii) 4-nitrophenol from 2-nitro-phenol, 4-aminophenol, and picric acid. A new method is reported for rapid sample preparation for determination of free phenolic compounds and a few conjugated phenolic compounds in blood. Simultaneous separa-tion and determination of five phenolic compounds, quinol, resorcinol, coumaric acid, catechin and 3,4-dihydroxycinnamic acid was achieved by use of pH 3.67 citrate buffer; separation of gallic acid and 4-aminophenol was achieved by use of pH 3.62 acetate buffer. These results were then correlated with the general health and habits of the persons from whom the blood was taken. The accuracy and reproducibility of the method has been checked statistically. The limit of detection was found to be 0.20 μg L-1.