JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES最新文献

{"title":"PERFORMANCE EVALUATION OF ETHYLENE-VINYL ACETATE MODIFIED BITUMEN AND MIXTURES","authors":"Hamza Marjan","doi":"10.26782/jmcms.2022.01.00002","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00002","url":null,"abstract":"Interconnectivity necessitates the use of transportation facilities and infrastructure. All highway design agencies seek acceptable, long-lasting, and cost-effective strategies while designing these facilities. The traffic demands on roads are much higher than they have been in the past. Increased traffic loads, larger traffic volumes, and insufficient maintenance have all contributed to serious road surface distress (e.g., rutting and cracking) due to rapid development. As conventional asphalt combinations are unable to withstand high axle loads and tire pressures, interest in polymer-modified asphalt has grown. Polymer modification of asphalt is one of the most effective ways to improve asphalt qualities. The practical temperature range of binders is greatly expanded by polymers. The inclusion of the polymer can considerably improve the binder qualities by increasing the stiffness of the bitumen and enhancing its temperature susceptibility, enabling the building of safer roads and lower maintenance costs. This research presents a laboratory investigation of the Ethylene Vinyl Acetate (EVA) polymer-modified bitumen. NHA-B gradation, PARCO 60/70 grade bitumen, and EVA polymer of TPI Polene Public Company Limited were used. Penetration, softening point, ductility, and viscosity tests were used to evaluate the conventional properties of the asphalt binders. Three different percentages of polymers were used i.e., 2%, 4%, and 6%. The impact of the EVA polymer on permanent deformation and moisture susceptibility was investigated. A double wheel tracker (DWT) was used to quantify permanent deformation (rutting), and a Universal Testing Machine (UTM) was used to examine moisture susceptibility using an Indirect Tensile Strength (ITS) test. For different percentages of bitumen volumetric properties according to Marshall Mix Design procedure were measured, and then Optimum Bitumen Content (OBC) was evaluated. Performance tests were performed using above mentioned percentages of EVA. The rutting potential of mixes was improved by the addition of EVA as compared to control asphalt mixes. The same effect of the polymer was on the moisture susceptibility of the prepared samples. This showed that EVA polymer can be used in flexible pavements to reduce permanent deformation and high-temperature problems.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128378951","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}

{"title":"AN EFFICIENT NUMERICAL SCHEME FOR STATIC TORQUE PROFILING OF SWITCHED RELUCTANCE MACHINE WITH EXPERIMENTAL VALIDATIO","authors":"S. Mahar","doi":"10.26782/jmcms.2022.01.00008","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00008","url":null,"abstract":"In AC and DC drives, the use of switched reluctance machine (SRM) is becoming popular as it has a few preferences over AC and DC drives in a simple and robust construction without brushes, low inertia, and high torque to weight ratio, without rotor windings, simple circuit power converter, etc. SRM is widely used in variable speed and servo drives. Because of the double saliency structure and the high nonlinearity of magnetic material, it is difficult to represent the flux-linkage and static torque characteristic of the SRM. This work promotes the use of an improved numerical integration scheme for the static characteristics of SRM. The static torque function that depends on the rotor position and the phase current of the flux linkage features family (for different rotor positions) is improved in the proposed work. Firstly, we use an experimental setup for the electromagnetic characteristic of SRM. Then, we use the improved scheme to develop an efficient mathematical model for static characteristics and finally simulate the static characteristic of SRM through MATLAB code. In the last step, we compare the performance of the proposed integrator model with an existing approach for better efficiency of the static characteristic of SRM with experimental validation.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126550383","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}

{"title":"EXTENDED EUCLIDEAN ALGORITHM OF AUNU BINARY POLYNOMIALS OF CARDINALITY ELEVEN","authors":"S. I. Abubakar, Zaid Ibrahim, A. Ibrahim, Sadiq Shehu, A. Rufa‟i","doi":"10.26782/jmcms.2022.01.00001","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00001","url":null,"abstract":"Binary polynomials representation of Aunu permutation patterns has been used to perform arithmetic operations on words and sub-words of the polynomials using addition, multiplication, and division modulo two. The polynomials were also found to form some mathematical structures such as group, ring, and field. This paper presents the extension of our earlier work as it reports the Aunu binary polynomials of cardinality eleven and how to find their greatest common divisor (gcd) using the extended Euclidean algorithm. The polynomials are pairly permuted and the results found showed that one polynomial is a factor of the other polynomial or one polynomial is relatively prime to the other and some gave different results. This important feature is of combinatorial significance and can be investigated further to formulate some theoretic axioms for this class of Aunu permutation pattern. Binary polynomials have important applications in coding theory, circuit design, and the construction of cryptographic primitives.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132773295","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}

{"title":"ALL-OPTICAL N-BIT BINARY TO TWO’S COMPLEMENT CONVERTER WITH THE HELP OF SEMICONDUCTOR OPTICAL AMPLIFIER-ASSISTED SAGNAC SWITCH","authors":"A. Bhattachryya","doi":"10.26782/jmcms.2022.01.00009","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00009","url":null,"abstract":"All-optical n-bit paired to 2’s complement converter has been planned with the assistance of Terahertz optical unbalanced demultiplexer (TOAD) switches. The paper depicts all-optical transformation conspire to utilize a bunch of every single optical switch. PC framework ordinarily utilizes 2’s complement for paired deduction and intelligent control. By embracing a definite mathematical reproduction the impact of these critical boundaries on the measurements that decide the nature of exchange is completely examined and diverse plan rules are extricated for their legitimate determination to guarantee ideal activity.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"46 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121017245","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}

{"title":"EFFECT OF INLET AIR COOLING ON THE GAS TURBINE PERFORMANCE USING EVAPORATOR AND VAPOUR ABSORPTION COOLERS AT THE HQ-2 DAUR SSGCL GAS COMPRESSION STATION","authors":"Qurban Ali","doi":"10.26782/jmcms.2022.01.00005","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00005","url":null,"abstract":"A gas turbine is a device that converts the energy of fuel into mechanical energy and is used to derive several types of rotating equipment. One of the major drawbacks of a gas turbine is that the performance (power output and thermal efficiency) of a gas turbine decreases instantly with the rise of ambient temperature. At Daur SSGCL Gas Compression Station, gas turbines are used to derive centrifugal type gas compressors to raise the pressure of natural gas where ambient temperature varies between 70 to 500C which decreases the performance of gas turbines. Inlet air cooling is a method through which the effect of ambient temperature on the performance of gas turbines can be decreased. This technique of cooling intake air increases the performance of gas turbines by increasing air density. There are various types of inlet air cooling but, in this study, two types of inlet air cooling techniques are discussed, one of which is wetted media evaporative type and the other one is vapour absorption type. The Evaporative type inlet air cooling technique is suitable for sites with high ambient temperature and low relative humidity and vapour absorption type is used for a wide range of ambient air temperature. In this study, thermodynamic models of the gas turbine have been developed without inlet air cooling (base case/cycle) with inlet air cooling for analyzing the effects of ambient conditions (temperature and relative humidity) on the performance of the gas turbine. The simulated results obtained from Engineering Equation Solver with inlet air cooling systems (vapour absorption and wetted media evaporator cooler) are compared without inlet air cooling (base cycle) gas turbine. On comparison of results of a gas turbine with inlet air cooling systems to without inlet air cooling at ambient conditions, T_0=298.15K (250C) and ∅=60% it is found that gas turbine with evaporator cooler produces 289kW more power than base case/cycle and 390kW more output power with vapour absorption inlet air cooling.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134172754","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}

{"title":"AN INTRODUCTION TO THEORY OF DYNAMICS OF NUMBERS: A NEW CONCEPT","authors":"P. Bhattacharyya","doi":"10.26782/jmcms.2022.01.00003","DOIUrl":"https://doi.org/10.26782/jmcms.2022.01.00003","url":null,"abstract":"The role of numbers is very important not only in mathematics but also in any branch of science and technology. The author developed a new concept of the theory of dynamics of numbers. According to the new concept, 0 (zero) is the starting point of any number. There are infinite number of directions through which the numbers can move from starting point 0 (zero) and can return in the vertically opposite direction towards the starting point 0 (zero). The motion of any number (object) is positive whether it is forward motion or backward motion. Similarly, countup and countdown motions of numbers are also positive. Therefore, there is no existence of negative numbers. The author framed the law of the theory of dynamics of numbers. The author solved the quadratic equation in one countable unknown object or quantity (say x) in the form, ax2 + bx + c = 0, even if the numerical value of the discriminant, b2 – 4ac <0. The author applied the theory of dynamics of numbers to solve the problems of plane co-ordinate geometry and also to solve the problems of the quadratic equation in the present paper.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121989141","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}

{"title":"A REVIEW ON TROPICAL CYCLONES","authors":"I. Ghosh","doi":"10.26782/jmcms.2021.12.00003","DOIUrl":"https://doi.org/10.26782/jmcms.2021.12.00003","url":null,"abstract":"In this review, we have discussed the important recent theoretical research works on tropical cyclone dynamics. For mitigation of the devastating effect of tropical cyclones on coastal human civilization more and more advanced forecasting techniques are evolving nowadays with the increase in the frequency of generation of tropical cyclones. Thus it is of utmost necessity to understand the anatomy and physiology of the dynamics of tropical cyclones. So researchers explain the cyclonic system from a different point of view and that is highlighted in this review. So this review illustrates, in brief, some important developed models.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116315829","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}

{"title":"USE OF NON-LINEAR AUTOREGRESSIVE MODEL (NAR) TO FORECAST THE FUTURE HEALTH OF SHRIMP FARM","authors":"P. Dutta","doi":"10.26782/jmcms.2021.12.00005","DOIUrl":"https://doi.org/10.26782/jmcms.2021.12.00005","url":null,"abstract":"Microbial load in terms of Total Coliform (TC) and Fecal Coliform (FC) were documented in the water of a shrimp culture farm at Malancha region of North 24 Parganas for a period of 36 years (1984-2019). The region receives the wastewater from the city of Kolkata. A steady hike in the microbial load (comprising of both total and fecal coliform) is noticed. The primary reason behind this rise of the microbial load is the run-off from the nearby landmasses that brings various types of wastes in the shrimp farm under investigation. The sustainability of shrimp farms in this region is under question due to the huge microbial load as revealed from the output of NAR.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133827921","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}

{"title":"APPLICATION OF ARTIFICIAL INTELLIGENCE (AI) TO ASSESS THE ROLE OF COVID-19 LOCKDOWN IN THE DOMAIN OF ESTUARINE ACIDIFICATION","authors":"Sitangshu Roy","doi":"10.26782/jmcms.2021.12.00002","DOIUrl":"https://doi.org/10.26782/jmcms.2021.12.00002","url":null,"abstract":"The branch of computer science that deals with the simulation of variables with the help of a computer are termed Artificial Intelligence (AI). Here we attempt to predict the pace of acidification in the Digha coast of the Bay of Bengal based on available datasets of more than three decades. The ground zero observation on the data set reveals a decreasing trend of pH since 1984 with a sudden hike in premonsoon 2020, the period coinciding with the COVID 19 lockdown phase in the Indian sub-continent.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130248416","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}

{"title":"IMPACT OF LOCKDOWN RESTRICTION OF COVID-19 ON SELECTIVE DISSOLVED HEAVY METALS IN COASTAL WEST BENGAL","authors":"Nibedita Mukhopadhyay","doi":"10.26782/jmcms.2021.12.00004","DOIUrl":"https://doi.org/10.26782/jmcms.2021.12.00004","url":null,"abstract":"In this study, the effect of COVID-19 lockdown (2020) on dissolved heavy metal load (Zn, Cu, and Pb) in the coastal West Bengal were analyzed concerning the pre-COVID 19 phases (2016-2019). Two stations namely Shankarpur (Stn.1) and Haldia (Stn. 2) were selected for the study as both have two contrasting operational features. Haldia is an important port-cum-industrial complex whereas Shankarpur is an important fish landing station-cum-tourism site. The results showed that in both the stations there was a drastic fall in the metal concentrations due to lockdown implementation, but in Haldia, the aquatic health exhibits much improvement as in lockdown there was complete shut-down of the industries. ANOVA results also highlight significant variations between the two stations as well as between the pre COVID-19 (2016-2019) and COVID-19 lockdown phases.","PeriodicalId":254600,"journal":{"name":"JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130605752","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}