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Potential use of waste foundry sand with lateritic clayey soil in the construction of pavement sub-bases
The current study investigates the potential for use of waste foundry sand (WFS) in highway sub-base construction. Lateritic clayey soil (LCS) and waste foundry sand were combined in different proportions to examine its potential to use as construction material in sub bases. In this research, geotechnical investigation was conducted that is particle size distribution, specific gravity, Atterberg limits, OMC, density, un-soaked and soaked CBR were conducted to evaluate the properties and validity of WFS upon stabilizing with the LCS for usage in construction of sub bases. The study shows that WFS can be effectively used in highway sub-base construction upon stabilizing with the lateritic clayey soils. 2019 SERSC. -
Work life balance among women anganwadi workers in Bengaluru
Over the past few years, worklife balance has evolved into a matter of significant concern. Both men and women strive to achieve a steady professional and personal life. In reality, women are more prone to experiencing such challenges. The paper attempted to understand worklife balance among Anganwadi workers (women-dominant centres). The research focused on the impact of job satisfaction, work overburden, workplace support, family support, and dependent care on the worklife balance of Anganwadi workers. For the purpose of the study, a structured questionnaire was administered to 467 participants. Statistical technique used for the study was regression model. The results indicated that workplace support and family support had a positive impact on the worklife balance among Anganwadi workers. The findings also suggested that work overburden and dependent care had a negative impact on worklife balance. The results also contradicted the hypotheses by portraying that job satisfaction was not a significant factor that impacted the worklife balance among Anganwadi workers. However, many other variables such as emotional intelligence, job autonomy, turnover intention, absenteeism, and work engagement that could potentially impact worklife balance were not taken into consideration. 2020, Associated Management Consultants Pvt. Ltd.. All rights reserved. -
Unveiling the Temporal Properties of MAXI J1820+070 through AstroSat Observations
We present here the results of the first broadband simultaneous spectral and temporal studies of the newly detected black hole binary MAXI J1820+070 as seen by Soft X-ray Telescope and Large Area X-ray Proportional Counter (LAXPC) on board AstroSat. The observed combined spectra in the energy range 0.7-80 keV were well modeled using disk blackbody emission, thermal Comptonization, and a reflection component. The spectral analysis revealed that the source was in its hard spectral state (? = 1.61) with a cool disk (kT in = 0.22 keV). We report the energy dependent time-lag and root mean squared (rms) variability at different frequencies in the energy range 3-80 keV using LAXPC data. We also modeled the flux variability using a single-zone stochastic propagation model to quantify the observed energy dependence of time lag and fractional rms variability, and then compared the results with that of Cygnus X-1. Additionally, we confirm the detection of a quasi-periodic oscillation with the centroid frequency at 47.7 mHz. 2020. The American Astronomical Society. All rights reserved.. -
Camera-based tri-lingual script identification at word level using a combination of SFTA and LBP features
This paper exhibit the identification of scripts at word level from the camera-based multi-script document images. The Camera-based document images suffer from noise while capturing documents and scripts are challenging to identify when noise is present. The scripts like Tamil, Punjabi, English, Oriya, Telugu, Gujarathi, Malayalam, Kannada, Hindi, Bengali, and Urdu combinations considered. The experiment conducted on a large dataset consisting of 77,000-word images and each script has 7000-word images word images. The texture features are combined to get the highest recognition accuracy. The recognition rate is 77.94% and 82.39% from SFTA features and 89.82% and 93.94% from LBP features, by using KNN and SVM classifiers, for combined feature vector KNN has given 94.45%, and SVM has given 93.88% recognition accuracy. 2019 SERSC. -
Moderating effect of social media usage on technology barriers to technology adoption by teachers
The education and learning process is redefined with the mesmerizing impact of ever-volatile technology platforms. With the advent of the Industry 4.0, supported by the intelligent web 3.0 connectivity catalyzed the transformation of traditional education philosophies and pedagogies in tune with the Learning 4.0, to empower both learners and educators as co-producers of knowledge. The researches brought to light that social application platforms became an indispensable part of the digital learning process. The bio-inspired technology designs considerably cast off the issues related to ease of use, perceived usefulness, and reduced the perceived internal barriers of the teachers to improve their Technology Adoption substantially. This Technology Adoption research was conducted under the theoretical framework of the education change model of Michael Fullan integrated with educators Communities of Practice. This descriptive research study framed to address how the teachers Technology Adoption was affected by their use of social media platforms and how it moderated their perceived Technology Barriers. Standardized questionnaires from Joe W. Kotrlik and Donna H. Redmann were adopted with a pilot study. Stratified cluster sampling was used to gather 1029 responses from Higher Secondary School teachers of six educational districts in Kerala. The analysis was done with IBM SPSS v.21 and Process v.3.4. Teachers Social Media Use and Perceived Technology Barriers were significantly correlated with the Technology Adoption of the teachers. The perceived Technology Barriers were reduced with respect to their Social Media Usage. The relation of perceived Technology Barriers with Technology Adoption was significantly moderated with Social Media Use. Gender and school sectors were neither mediated nor moderated Technology Adoption. These results are helpful in the teachers technology training programs and for further research. 2019 SERSC. -
Old and new private sector banks in india: Performance analysis
In the era of globalization and liberalization, a bank has to compete with not only local players and also internationally. It is tough time for Indian banking industry. Banks take various steps to improve the performance and provide best services to customers. Performance of banks refers to the capacity in generating sustainable profitability. Banks need to evaluate the performance and find the strength and weakness by considering important ratios. Researchers have analysed the performance of banks applying various tools and techniques. The present study seeks to assess the financial performance of old and new private sector banks operating in India. One of the models for assessing the performance of banks are CAMEL model. The study was conducted using secondary data. The study covered a period of 10 years and the data collected for study had been analysed using Simple Arithmetic Mean, Coefficient of Variation, Linear Growth Rate, Analysis of Variance (ANOVA) and Ranking for CAMEL model. Under this model, banks have been rated based on five criteria namely, C-Capital Adequacy, A-Asset Quality, M-Management Efficiency, E-Earning Quality and L-Liquidity. This study was conducted on the financial performance of twenty banks consisting of seven new private sector banks and thirteen private sector banks in India. The result has disclosed that various banks have been performing well in different parameters. As per CAMEL model overall ranking, Karur Vysya bank, Federal bank and Tamilnad Mercantile banks have occupied first three spots under the old private sector banks. In the case of the new private sector banks the first three slots have been held by HDFC bank, Kotak Mahindra bank and Yes bank respectively. The estimated ratios have disclosed that the new private sector banks have been enjoying a better financial health than the old private sector banks during the study period. The old private banks have to pay attention to improve the financial performance in the future. 2020 SERSC. -
At the Interface of Colonial Knowing and Unknowing: A Critical Reading of the Golden Camellia in Amitav Ghoshs River of Smoke
This paper is a critical reading of Amitav Ghoshs fictional representation of modes of acquisition, assimilation and dissemination of colonial knowledge in River of Smoke (2012). The paper highlights the cultural exchange of botanical and horticultural knowledge between Europe and China in the nineteenth century narrativized by Ghosh. The novel illustrates the significance of non-Eurocentric modes of conserving knowledge that would otherwise suffer from the violence of utilitarian models of European epistemology. The paper explicates how Ghosh represents the Chinese as successful in ensuring that the Golden Camelliaa rare flowering variety in Chinais preserved from falling prey to the profiteering logic of botanical expeditions and epistemic hegemony by European naturalists. Using Pramod Nayars imperial cosmopolitanism and Robert Proctors agnotology as critical frames, the paper maps Ghoshs fictional representation of Chinese horticulturists using botanical illustration to disable Europeans from accessing the Golden Camellia. By circulating the nonexistence of the plant variety as the truth, the Chinese horticulturalists in the novel prevent the Golden Camellia from being usurped and profiteered by European botanists and plant traders. The paper also establishes how Ghoshs work functions as a significant addition to works foregrounding the South-South connection in the South Asian literary imagination. 2020 South Asian Literary Association. -
Copper Nanoparticles: A Review on Synthesis, Characterization and Applications
An emerging field of science Nanotechnology which is involved in manipulation of atoms and molecules has shown great potential in all fields of sciences. Nanotechnology deals with nanoparticles ranging from size 1 to 100 nm in diameter, due to small size and high surface area eventually increases the state of activity. This review focuses on metal and metal oxide nanoparticles and mainly on green synthesis, characterization and application of copper nanoparticles. Green synthesis of copper and copper oxide (Cu and CuO) is economically beneficial and ecofriendly. Copper nanoparticles are used in diverse fields such as biomedicine, pharmaceuticals, bioremediation, molecular biology, bioengineering, genetic engineering, dye degradation, catalysis, cosmetics and textiles. Structural properties and biological effects of copper nanoparticles have promising effectivity in field of life sciences 2020. All rights reserved. -
Is there spill-over effect among metals?
This paper was aimed at examining the existence of volatility spill-over between precious and industrial metals by estimating Multi-variate GARCH model. Metals chosen for this study were aluminium, copper, gold and silver. Data from 1st march 2004 to 31st March 2018 were used for the analysis. Significant clustering effect was found in the variance of all the metals studied. Significantly strong volatility spill-over was found between aluminium and copper when compared to other metals. It was also noted that the persistence of volatility spill-over between copper and aluminium is the least among other metals. Since there is significant spill-over between aluminium and copper, portfolio managers are advised to avoid investing in them together in their portfolios. 2019 SERSC. -
Theoretical framework of the relationship between emotional intelligence and effective leadership to ensure sustainability
There is little argument about the need for sustainability. Organizations around the world have now understood their role in contributing to the broader goals of, environmental and social sustainability. While financial sustainability of the organization has always been the key purpose. In order to identify, implement and promote sustainable practices, the leadership support is critical. This not only includes the current set of leaders but the future leaders of the organization as well. Thus, there arises a need to identify the key competencies and skills that contribute to effective leadership and to ensure that the training of future leaders focuses on the same. The current paper reviews theories in the area of Leadership and their evolution. Based on the proposition by key theorists in the area of leadership, the proposed theoretical framework links the dimensions of effective leadership to the dimensions of emotional intelligence. The purpose of the study was to establish a theoretical relationship between Emotional Intelligence, Effective leadership and sustainability. The proposed model is based on existing theories in the respective areas and the researchers hope that future research would work to provide empirical evidence for the same. This would ensure that the leadership pipeline is designed to promote the skills required to create and run a sustainable organization. 2020 IJSTR. -
Organization justice impact on employee work engagement
Research methodology: For the study 200 employees of selected Educational Institutions in North NCR was taken as respondents. Data was collected using standard questionnaire containing standard scaled of distributive, procedural, interactional, trust and employee engagement. The relationships between justice perceptions and work engagement were analyzed using correlations and regression analysis. Findings: The analysis of the study indicates that there is a strong and positive relationship among organization justice and employee engagement. The study also indicates that procedural, interactional and distributive justice are inter related with each other. Further, distributive and interactional justice take precedence over procedural justice in determining job engagement, while distributive justice plays the most important role in determining organization engagement (OE), followed by procedural and interactional justice. Limitations: This paper adds to the very small number of studies that have investigated the role of interactional justice in enhancing job and OEs. It has also established inter-relationships between the three dimensions of organizational justice and their individual roles in determining job and OEs. 2020 SERSC. -
Enhanced Channel Division Method for Estimation of Discharge in Meandering Compound Channel
Accurate prediction of shear force distribution along the boundary in open channels is a key to the solution of numerous hydraulic problems. The problem becomes more complicated for meandering compound channels. A model is developed for predicting the percentage of shear force at the floodplain (%Sfp) of two-stage meandering channels using gene-expression programming (GEP) by considering five dimensionless parameters viz. the width ratio, relative depth, sinuosity, bed slope, and meander belt width ratio as the inputs in the model. Basing on the %Sfp, the apparent shear force along the division lines of separation in compound channels is selected for discharge calculation using the conventional channel division methods. An Enhanced Channel Division Method (ECDM) is introduced to calculate discharge by assuming interface line at main channel and floodplain junction. A modified variable-inclined (MVI) interface is suggested having zero apparent shear determined from flow contribution in the main channel and floodplain. The MVI interface is further used to calculate discharge in the meandering compound channels. Performance of the GEP model is tested against other analytical methods of calculating %Sfp. Error between the observed and calculated discharges using the MVI interface is found to be the minimum when compared to other interface methods. The enhance channel division method is successfully applied for validating the two available overbank discharge values for the river Baitarani at Anandapur (drainage area of 8570 sq. km), giving the minimum errors of 0.31% and 1.02% for flow depths of 7.5m and 8.63m, respectively. 2020, Springer Nature B.V. -
Tailor-Made Polyelectrolyte Multilayers for the Removal of Obidoxime from Water in Microfiltration Process
Abstract: The aim of this study was to develop and review the properties including removal efficacy of novel polyelectrolyte based multilayers against a pharmaceutical, obidoxime (OBD) from water. After examining a wide range of bilayer pairs based on different polyelectrolytes, the layer-by-layer (LbL) modification of polyamide microfiltration membrane with a uniform coating of poly(diallyldimethylammoniumchloride) (PDAC) and poly(sodium styrene sulfonate) (PSS) multilayers was found to be effective in its removal. The characterization of the bilayer pair was done with analytical instruments like UV-vis spectroscopy, ATR-FTIR, spectroscopic ellipsometry, TGA, SEM and AFM. The characterization of bilayer pairs demonstrated the stability and integrity of bilayer pair. The removal efficiency of bilayer buildup was analyzed by adjusting different assembly conditions and other filtration parameters. The maximum removal rate by the bilayer was 99.26% for 7 bilayer with average permeate flux of 6.19 m3/m2 day. These bilayers exhibit stable rejection properties under various applied conditions including change in pH, presence of anions, and macromolecules etc. suggesting its potential rejection application. The major factors that facilitate the rejection are found to be hydrophilic interaction and steric factor. The present study validated the application of polyelectrolyte modified microfiltration membranes as a potentially feasible and promising method for the removal of obidoxime residues from water matrix. 2020, Pleiades Publishing, Ltd. -
TEMPO-Mediated Aqueous Phase Electrooxidation of Pyridyl Methanol at Palladium-Decorated PANI on Carbon Fiber Paper Electrode
Palladium nanoparticles decorated on polyaniline coated carbon fiber paper electrode (Pd-PANI/CFP) was employed for TEMPO ((2,2,6,6-tetramethylpiperidin-1-yl)oxyl) mediated electrocatalytic oxidation of pyridyl methanol to pyridyl carboxaldehyde using cyclic voltammetry in aqueous acidic media using a surfactant. The electrochemical properties of the modified electrodes were studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The physicochemical properties of the modified electrodes were studied using Scanning electron microscopy (SEM) with Energy dispersive X-ray spectroscopy (EDS), Transmission electron microscopy (TEM), Optical profilometry, X-ray diffraction (XRD) spectroscopy, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Pd-PANI/CFP electrode has exhibited enhanced electrocatalytic activity towards TEMPO mediated oxidation of pyridyl methanol owing to higher electrochemically active surface area of the modified electrode. CV studies suggested higher electrochemical activity for Pd-PANI/CFP electrode when compared to PANI/CFP and bare CFP electrodes towards TEMPO mediated oxidation of pyridyl methanol. 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim -
Cloud computing security for public cloud using ciphers and queueing petri nets
Cloud computing is the most used word in the domain of Information Technology, which is making colossal differentiations in the IT business. Nowadays, a massive proportion of data is being made, and the masters are discovering better approaches for managing this data. In a general sense, the word cloud implies a virtual database that stores immense data from various clients. There are three sorts of cloud public, private and hybrid. A public cloud is fundamental for general customers where customers can use cloud benefits free or by paying. Private cloud is for explicit associations, and hybrid one is in a broad sense a mix of both. Cloud offers diverse kind of administrations, for instance, IAAS, PAAS, SAAS where administrations like a stage for running any application, getting to the enormous information extra room, can use any application running under the cloud are given. The cloud similarly has a shortcoming concerning the security for the data warehouse. In a general sense, public cloud is inclined to data modification, data hacking and therefore, the integrity and privacy of the data are being undermined. Here in our work our motive is to verify the information that will be taken care of in the public cloud by using the multi-stage encryption. The estimation that we have proposed is a mix of Rail Fence cipher and Play Fair cipher. 2020, IJSTR. -
On l(T, 1)-colouring of certain classes of graphs
For a given set T of non-negative integers including zero and a positive integer k, the L(T, 1)-Colouring of a graph G = (V, E) is a function c: V(G) ? {0, 0, , k} such that |c(u) ? c(v)| ? T if the distance between u and v is 1 and |c(u) ? c(v)| ? 0 whenever u and v are at distance 2. The L(T,1)-span, ?T,1(G) is the smallest positive integer k such that G admits an L(T, 1)-Colouring. In this article we initiate a study of this concept of L(T, 1)-Colouring by determining the value of ?T,1(G) for some classes of graphs and present algorithms to obtain the L(T, 1)-Colouring of paths and stars. 2020 IJSTR. -
An investigation on structural and optical properties of reduced graphene oxide-tin oxide nanocomposite
Graphene-metal oxide composites have attracted tremendous research interest in recent days due to their unique and fascinating properties. In the present study, rGO and SnO2 were synthesized separately by modified Hummers' method and nitrate-citrate gel combustion technique respectively. One step hydrothermal method was used to prepare reduced graphene oxide-tin oxide nanocomposite of various concentrations of rGO and SnO2.The obtained samples were characterized by XRD, FTIR, Raman Spectroscopy, UV-Vis spectroscopy, SEM and TEM. The results of different characterization techniques showed the successful formation of SnO2, rGO and SnO2-rGO composites. X-ray analysis pattern indicates formation of the SnO2 nanoparticles in the graphene matrix. The size of the particles prepared is in nanoscale and was found to be 10-20 nm range. TEM images reveal the incorporation of crystalline SnO2 nanoparticles in graphene layers. Upon incorporation of tin oxide to graphene matrix, one could easily tailor the energy gap of the composite matrix. 2020 World Research Association. All rights reserved. -
Base mediated spirocyclization of quinazoline: One-step synthesis of spiro-isoindolinone dihydroquinazolinones
A novel approach for the spiro-isoindolinone dihydroquinazolinones has been demonstrated from 2-aminobenzamide and 2-cyanomethyl benzoate in the presence of KHMDS as a base to get moderate yields. The reaction has been screened in various bases followed by solvents and a gram scale reaction has also been executed under the given conditions. Based on the controlled experiments a plausible reaction mechanism has been proposed. Further the substrate scope of this reaction has also been studied. This journal is The Royal Society of Chemistry. -
Molecularly imprinted PEDOT on carbon fiber paper electrode for the electrochemical determination of 2,4-dichlorophenol
A highly selective electrochemical sensor has been developed for the determination of the pesticide molecule, 2,4-dichlorophenol (2,4-DCP) using molecularly imprinted conducting polymer. 2,4-dichlorophenol imprinted polymer films were prepared by electropolymerising 3,4-ethylenedioxythiophene (EDOT) on surface of carbon fiber paper electrode (CFP) in presence of 2,4-dichlorophenol. Electrochemical over-oxidation was carried out for the controlled release of 2,4-DCP templates and to generate definite imprinting sites. Surface morphology of the imprinted electrode was analysed by Scanning Electron Microscopy-Energy Dispersive X-ray Spectrometry, Fourier Transform Infrared and Raman spectroscopy. In optimized conditions, the voltammetric sensor gave a linear response in the range of 0.21 nM 300 nM. The significantly low detection limit (0.07 nM) demonstrates the ultra-low sensitivity of the method. The imprinted sensor displayed higher affinity and selectivity towards the target 2,4-DCP over similar structural analogical interference than the non-imprinted sensor. MIP sensor was efficaciously employed for the selective determination of 2,4-DCP in real samples of water. 2020 Elsevier B.V. -
Wage Rate: Is this Return to Education or Return to Physical Capability? Evidence from Rural India
This paper estimates the wage function for daily labor market participants inSemi-Arid Tropics of rural India within a traditional agrarian framework. Village level data on 18 villages for 20092010 and 20122013 have been used for this study. Three-years balanced panel estimation has also been conducted to test the time invariance of the findings from the cross-sectional study. A modified Mincerian earning equation is estimated for different types of workersregressing upon a set of human capital measures, socioeconomic factors and, demand influences after correcting for potential sample selection bias. The study finds differential impacts of education and physical ability to determine wages for male and female workers. It reveals the greater importance of education in explaining wages of male laborers while for females, nutritional status playing a significant role than education in wage determination process. Among the other factors, drought worksas a major exogenous shock and hence impacts wages badly. Working in the non-farm sector has a significant impact on wages.Also, thewageparticipation relationship has found more operativein the lower section of the society. 2020, Indian Society of Labour Economics.