This paper studies the concepts of D-boundary vertex, D-interior vertex, D-null vertex, D-closure of a graph and D-closed graph, based on the idea of D-distance. We investigate the structural properties of these concepts and determine whether some special classes of graphs are D-closed or not.
{"title":"On D-distance and D-closed Graphs","authors":"S. M. P, S. J.","doi":"10.12723/mjs.sp1.13","DOIUrl":"https://doi.org/10.12723/mjs.sp1.13","url":null,"abstract":"This paper studies the concepts of D-boundary vertex, D-interior vertex, D-null vertex, D-closure of a graph and D-closed graph, based on the idea of D-distance. We investigate the structural properties of these concepts and determine whether some special classes of graphs are D-closed or not.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84863273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Given a connected (p, q)− graph G = (V, E) of diameter d, ∅M ⊆ V (G) and a nonempty set X = {0, 1, ..., d} of colors of cardinality , let fM be an assignment of subsets of X to the vertices of G such that fM(u) = {d(u, v) : v ∈ M} where, d(u, v) is the usual distance between u and v . We call fM an M− distance pattern coloring of G if no two adjacent vertices have same fM. Define f ⊕ M of an edge e ∈ E(G) as f ⊕ M(e) = fM(u) ⊕ fM(v); e = uv. A distance pattern distinguishing coloring of a graph G is an M distance pattern coloring of G such that both fM(G) and f ⊕ M(G) are injective. This paper is a study on distance pattern coloring and distance pattern distinguishing coloring of graphs.
{"title":"Distance Pattern Distinguishing Coloring of Graphs","authors":"Sona Jose Kannankallel","doi":"10.12723/mjs.sp1.1","DOIUrl":"https://doi.org/10.12723/mjs.sp1.1","url":null,"abstract":"Given a connected (p, q)− graph G = (V, E) of diameter d, ∅M ⊆ V (G) and a nonempty set X = {0, 1, ..., d} of colors of cardinality , let fM be an assignment of subsets of X to the vertices of G such that fM(u) = {d(u, v) : v ∈ M} where, d(u, v) is the usual distance between u and v . We call fM an M− distance pattern coloring of G if no two adjacent vertices have same fM. Define f ⊕ M of an edge e ∈ E(G) as f ⊕ M(e) = fM(u) ⊕ fM(v); e = uv. A distance pattern distinguishing coloring of a graph G is an M distance pattern coloring of G such that both fM(G) and f ⊕ M(G) are injective. This paper is a study on distance pattern coloring and distance pattern distinguishing coloring of graphs.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88415671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent works we had discussed the possibility of primordial planets composed entirely of dark matter (DM), and considered this to be a possible reason for not detecting DM particles in the various ongoing experiments. It has been suggested that such primordial DM objects could have formed in the early universe. Here we look at these DM objects as possible candidates for short duration gamma ray bursts. This model has the advantage of eliminating the as yet unresolved baryon load problem in the usual scenario. These could also provide a possible mechanism for the formation of sub-stellar black holes, distinct from the usual Hawking (primordial) black holes.
{"title":"Possible Alternate Scenario for short Duration GRBs invoking Dark Matter Objects","authors":"Arun Kenath, C. Sivaram","doi":"10.12723/mjs.65.3","DOIUrl":"https://doi.org/10.12723/mjs.65.3","url":null,"abstract":"In recent works we had discussed the possibility of primordial planets composed entirely of dark matter (DM), and considered this to be a possible reason for not detecting DM particles in the various ongoing experiments. It has been suggested that such primordial DM objects could have formed in the early universe. Here we look at these DM objects as possible candidates for short duration gamma ray bursts. This model has the advantage of eliminating the as yet unresolved baryon load problem in the usual scenario. These could also provide a possible mechanism for the formation of sub-stellar black holes, distinct from the usual Hawking (primordial) black holes.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79476053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The stability of fractional-order visco-elastically damped linear system Bagley Torvik equation is analyzed in this paper. The fundamental novelty of this paper is the application of Caputo derivative. Prevailing sufficient spectral conditions are considered to guarantee the stability of linear models. Laplace transform, and Mittag-Leffler functions are utilized to develop the results. Furthermore, asymptotical stability of linear fractional-order models are also achieved through spectral values of the characteristic polynomials. Numerical examples are given to display the effectiveness of suggested method.
{"title":"Stability analysis of visco-elastically damped structure through Bagley Torvik Equation","authors":"Priyadharsini Sivaraj","doi":"10.12723/mjs.65.4","DOIUrl":"https://doi.org/10.12723/mjs.65.4","url":null,"abstract":"The stability of fractional-order visco-elastically damped linear system Bagley Torvik equation is analyzed in this paper. The fundamental novelty of this paper is the application of Caputo derivative. Prevailing sufficient spectral conditions are considered to guarantee the stability of linear models. Laplace transform, and Mittag-Leffler functions are utilized to develop the results. Furthermore, asymptotical stability of linear fractional-order models are also achieved through spectral values of the characteristic polynomials. Numerical examples are given to display the effectiveness of suggested method.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80906701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The goal of the current study was to evaluate the larvicidal activities of synthesized silver and copper nanoparticles against Epilachnavigintioctopunctatalarvaeusing an aqueous leaf extract of Ocimumbasilicum. For 24 hours, larvae were exposed to various concentrations of an aqueous, silver and copper nanoparticles sunthesized extracts of O. basilicum.After visible observation, FTIR, a particle size analyzer, and UV-vis spectrophotometer were used to confirm the successful synthesis of nanoparticles. By using a GC-MS study, the phytochemicals found in leaf extract were investigated. LC50 and LC90 values were calculated to analyze the results. The larvicidal efficacy of aqueous extract, AgNPs, and CuNPs synthesized leaf extract were compared. The larvicidal activity of the leaf extract produced by CuNPs was marginally inferior to that of the leaf extract produced by AgNPs.
{"title":"Comparative analysis of larvicidal efficacy of Silver and Copper nanoparticles synthesized leaf extract of Ocimum basilicum against Epilachna vigintioctopunctata","authors":"C. Sundareswari, Sudarmani D.N.P., J. S","doi":"10.12723/mjs.65.9","DOIUrl":"https://doi.org/10.12723/mjs.65.9","url":null,"abstract":"The goal of the current study was to evaluate the larvicidal activities of synthesized silver and copper nanoparticles against Epilachnavigintioctopunctatalarvaeusing an aqueous leaf extract of Ocimumbasilicum. For 24 hours, larvae were exposed to various concentrations of an aqueous, silver and copper nanoparticles sunthesized extracts of O. basilicum.After visible observation, FTIR, a particle size analyzer, and UV-vis spectrophotometer were used to confirm the successful synthesis of nanoparticles. By using a GC-MS study, the phytochemicals found in leaf extract were investigated. LC50 and LC90 values were calculated to analyze the results. The larvicidal efficacy of aqueous extract, AgNPs, and CuNPs synthesized leaf extract were compared. The larvicidal activity of the leaf extract produced by CuNPs was marginally inferior to that of the leaf extract produced by AgNPs.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80492384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, the Maize Streak Virus disease model which involves the Maize and the Homopteran population is considered. This system of the differential equation is analytically solved by using Adomian Decomposition Method. The analytical results are compared with numerical simulation by assuming certain values for the parameter. Further, the demolishing and contamination rate of contagious and receptive homopteran on receptive and contagious Maize plant parameters are analyzed to reduce the contamination rate. In addition, the death rates of contagious maize, receptive homopteran and contagious homopteran are also discussed to remove the contagious population and make them free from Maize Streak Virus.
{"title":"Implementation of Adomian Decomposition Method for Maize Streak Virus Disease Model to Reduce the Contamination Rate in Maize Plant","authors":"Malinidevi Ramanathan, V. Kalirajan","doi":"10.12723/mjs.65.5","DOIUrl":"https://doi.org/10.12723/mjs.65.5","url":null,"abstract":" \u0000 In this paper, the Maize Streak Virus disease model which involves the Maize and the Homopteran population is considered. This system of the differential equation is analytically solved by using Adomian Decomposition Method. The analytical results are compared with numerical simulation by assuming certain values for the parameter. Further, the demolishing and contamination rate of contagious and receptive homopteran on receptive and contagious Maize plant parameters are analyzed to reduce the contamination rate. In addition, the death rates of contagious maize, receptive homopteran and contagious homopteran are also discussed to remove the contagious population and make them free from Maize Streak Virus.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87060552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sandipan Biswas, Shivnath Ghosh, S. Roy, R. Bose, Sanjay Soni
In the modern world, the current state and course of economic development and growth are determined by the fortunes and vagaries of the stock markets. In this research study, the authors provide a model that can aid in making reliable and error-free predictions of stock market trends. The described approach uses sentiment analytics based on financial news and past stock market patterns. The proposed structure has been used to forecast stock market patterns that incorporates sentiment analysis taken from news and previous stock market patterns to provide more precise results. The model shown here has provided a two-step process- the Naive Bayes algorithm and forecasting future values of stocks using evaluation findings on text polarity and historical stock value movement information. A novel idea known as the KNN-LR Hybrid algorithm has been introduced to achieve better outcomes when evaluating the accuracy and efficacy of other machine learning algorithms.
{"title":"A Study of Stock Market Prediction through Sentiment Analysis","authors":"Sandipan Biswas, Shivnath Ghosh, S. Roy, R. Bose, Sanjay Soni","doi":"10.12723/mjs.64.6","DOIUrl":"https://doi.org/10.12723/mjs.64.6","url":null,"abstract":"In the modern world, the current state and course of economic development and growth are determined by the fortunes and vagaries of the stock markets. In this research study, the authors provide a model that can aid in making reliable and error-free predictions of stock market trends. The described approach uses sentiment analytics based on financial news and past stock market patterns. The proposed structure has been used to forecast stock market patterns that incorporates sentiment analysis taken from news and previous stock market patterns to provide more precise results. The model shown here has provided a two-step process- the Naive Bayes algorithm and forecasting future values of stocks using evaluation findings on text polarity and historical stock value movement information. A novel idea known as the KNN-LR Hybrid algorithm has been introduced to achieve better outcomes when evaluating the accuracy and efficacy of other machine learning algorithms.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73739309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Today, most of the IT companies are moving towards Cloud infrastructure and technology due to its flexibility, scalability, and cost-effective features. But security is still the main hinderance to accept cloud computing on large scale. There are many security issues related to cloud implementation and one of the major threats is Distributed Denial of Services (DDoS) attack on cloud servers and applications. DDoS attack is a most prevailing security issue where attacker’s intention is to make all victim’s resources like cloud servers, storage, bandwidth etc. unavailable to general user which results to dissatisfactory outcomes in related business. This paper emphasis on understanding of DDoS attacks, their detection and analysis. The paper also explores the possible mitigation strategies to reduce the impact of DDoS.
{"title":"Distributed Denial of Services attacks on cloud servers: Detection, Analysis and Mitigation","authors":"Sudesh Pahal, Anjana Saroha","doi":"10.12723/mjs.64.7","DOIUrl":"https://doi.org/10.12723/mjs.64.7","url":null,"abstract":"Today, most of the IT companies are moving towards Cloud infrastructure and technology due to its flexibility, scalability, and cost-effective features. But security is still the main hinderance to accept cloud computing on large scale. There are many security issues related to cloud implementation and one of the major threats is Distributed Denial of Services (DDoS) attack on cloud servers and applications. DDoS attack is a most prevailing security issue where attacker’s intention is to make all victim’s resources like cloud servers, storage, bandwidth etc. unavailable to general user which results to dissatisfactory outcomes in related business. This paper emphasis on understanding of DDoS attacks, their detection and analysis. The paper also explores the possible mitigation strategies to reduce the impact of DDoS.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77391004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, subbasis for different topologies on vertex set of a simple graph without isolated vertices is introduced. Some properties of these topologies are investigated. Interior, closure, exterior and boundary of a vertex induced subgraph were defined and some basic properties were studied.
{"title":"Topologies Induced by Vertex Set of Graphs","authors":"Gnanachandra Paulraj, Lalithambigai K","doi":"10.12723/mjs.64.3","DOIUrl":"https://doi.org/10.12723/mjs.64.3","url":null,"abstract":"In this paper, subbasis for different topologies on vertex set of a simple graph without isolated vertices is introduced. Some properties of these topologies are investigated. Interior, closure, exterior and boundary of a vertex induced subgraph were defined and some basic properties were studied.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73717813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effect of zinc oxide nanoparticles surface modified with N-[3-(Trimethoxysilyl)propyl]ethylenediamine (15.5 nm) on mild steel in 0.5M HCl at five different concentrations and temperatures has been studied using Electrochemical Impedance Spectroscopy (EIS) and Tafel polarization curves. Results show that the inhibition efficiency of synthesized mixed type of inhibitor increases up to 40˚C and then decreases because of both physical and chemical adsorption. The activation parameters calculated using Arrhenius plot confirmed chemical adsorption process. Adsorption process follows Langmuir adsorption isotherm and free energy of adsorption values proved the spontaneous adsorption of inhibitor on mild steel sample. Scanning electron microscopy (SEM) analysis also showed that the synthesized nanoparticle is efficient as corrosion inhibitor. Green synthetic method was adopted in synthesis of inhibitor by using Phyllanthus Emblica (Gooseberry) extract. The inhibitor was characterized by Fourier Transform Infra-red Spectroscopy (FT-IR) and X-Ray Diffraction techniques.
{"title":"Development of Silane Functionalized ZnO Nanoparticles for Enhancing Anticorrosion Application","authors":"Geetha Mable Pinto, Apoorva Devadiga","doi":"10.12723/mjs.61.4","DOIUrl":"https://doi.org/10.12723/mjs.61.4","url":null,"abstract":"The effect of zinc oxide nanoparticles surface modified with N-[3-(Trimethoxysilyl)propyl]ethylenediamine (15.5 nm) on mild steel in 0.5M HCl at five different concentrations and temperatures has been studied using Electrochemical Impedance Spectroscopy (EIS) and Tafel polarization curves. Results show that the inhibition efficiency of synthesized mixed type of inhibitor increases up to 40˚C and then decreases because of both physical and chemical adsorption. The activation parameters calculated using Arrhenius plot confirmed chemical adsorption process. Adsorption process follows Langmuir adsorption isotherm and free energy of adsorption values proved the spontaneous adsorption of inhibitor on mild steel sample. Scanning electron microscopy (SEM) analysis also showed that the synthesized nanoparticle is efficient as corrosion inhibitor. Green synthetic method was adopted in synthesis of inhibitor by using Phyllanthus Emblica (Gooseberry) extract. The inhibitor was characterized by Fourier Transform Infra-red Spectroscopy (FT-IR) and X-Ray Diffraction techniques.","PeriodicalId":18050,"journal":{"name":"Mapana Journal of Sciences","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85554837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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