Indian journal of science and technology最新文献

Modeling Extreme Values of Non-Stationary Precipitation Data with Effects of Covariates 利用变量效应模拟非静态降水数据的极端值

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.655

K. M. Sakthivel, V. Nandhini

{"title":"Modeling Extreme Values of Non-Stationary Precipitation Data with Effects of Covariates","authors":"K. M. Sakthivel, V. Nandhini","doi":"10.17485/ijst/v17i22.655","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.655","url":null,"abstract":"Background/Objectives: Climate change is one of the most challenging problems of recent decades as it is highly volatile and needs a very effective scientific approach to find a solution. Further, the changes in the climate especially extreme cases have a more negative influence on day to day affairs of society. Hence, developed countries pay much attention to climate change and make policies at a global level. To find the scientific solution for these kinds of climate change, Extreme value theory offers effective methods for estimating and quantifying these types of natural hazards associated with climate. Methods: Block (Annual) maxima and peak over threshold are two strategies employed in this theory. The data observed on precipitation are mostly having non-stationary characteristics along with covariates. The generalized extreme value distribution and generalized Pareto distribution are used to model this type of non-stationary stochastic process. Findings: This study proposes a pragmatic automated dual-phase threshold selection technique that employs the entropy method to combine the results from various goodness of fit tests into a single unified measure known as the evaluation indicator, resulting in an efficient threshold for capturing extreme values. This allows for a more comprehensive examination of various thresholds using evaluation indicators and avoids assessing each test criterion individually. Novelty: In contrast to the subjective results of threshold stability plots, the dual-phase technique is based on numerical computations, which reduce bias and improve decision-making objectivity. We illustrate the applicability of the proposed technique by analyzing a precipitation dataset that includes time and wind speed as covariates. The results of the comparative analysis reveal that the proposed automated dual-phase threshold approach outperforms the peaks over threshold and annual maxima methods. Keywords: Non-stationary, Extreme values, Annual maxima, Threshold selection, Evaluation indicator","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"13 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141271224","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}

引用次数: 0

Performance of Dynamic Retry Over Static Towards Resilience Nature of Microservice 动态重试比静态重试更能体现微服务的弹性本质

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.1041

E. Punithavathy, N. Priya

{"title":"Performance of Dynamic Retry Over Static Towards Resilience Nature of Microservice","authors":"E. Punithavathy, N. Priya","doi":"10.17485/ijst/v17i22.1041","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.1041","url":null,"abstract":"Objectives: The main objective of this study is to enhance the flexibility of microservice-based cloud applications, so they can cope with transient or short-term failure conditions more effectively, providing a higher throughput of cloud applications as a result. Methods: The comparison is done between the existing or manual resilient patterns such as circuit breaker and retry with a dynamically proposed retry patterns using a microservice application. Findings: The short-term or transient failures in cloud based microservice applications can occur for many reasons. Examples such as Network glitches, service failures, timeouts of requests etc. These failures can bring down the entire application resulting in a cascading of failures. Resiliency patterns are used to protect these applications from failures. The widely used patterns are circuit breaker and retry, with static configurations. It is possible that the static configurations used in resiliency patterns might not support all types of failures. Hence, a dynamic approach has been proposed to satisfy all these transient failures of cloud. The analysis proves that the application efficiency is balanced in dynamic retry than the static configurations of resiliency pattern. Hence, performance can be increased up to 34.3%, which means the availability can be ensured, in transient failure cases. Very little research has been carried out on this resiliency pattern, and there are no standards available for this pattern. When comparing with the existing adaptive retry pattern the performance is increased up to 88.52%, while using a microservice application. Novelty: A dynamically modified resilient pattern is been proposed by incorporating additional parameters such as execution time to the existing parameters of the static retry pattern. This is an individual resilience pattern, which can perform independently when compared with other dynamic resilience patterns. Keywords: Dynamic retry, Request time, Static circuit breaker, Resilience, Static retry","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"15 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141272010","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}

引用次数: 0

On Micro Pre-Neighborhoods in Micro Topological Spaces 论微拓扑空间中的微前邻域

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.741

P. Sathishmohan, S. S. Roshan, K. Rajalakshmi

引用次数: 0

Slot-loaded Dual-Band Microstrip Patch Antenna for 5G and WLAN/WiMAX Wireless Applications 用于 5G 和 WLAN/WiMAX 无线应用的槽载双频微带贴片天线

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.810

Ritisha V Bhatt, G. D. Makwana

引用次数: 0

In silico Approach for the Identification of Mirror Repeats within ced-3 Gene of Caenorhabditis elegans 鉴定秀丽隐杆线虫 ced-3 基因镜像重复序列的硅学方法

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.1549

Mamta Dhankhar, Deepti Yadav, Vikash Bhardwaj

{"title":"In silico Approach for the Identification of Mirror Repeats within ced-3 Gene of Caenorhabditis elegans","authors":"Mamta Dhankhar, Deepti Yadav, Vikash Bhardwaj","doi":"10.17485/ijst/v17i22.1549","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.1549","url":null,"abstract":"Objectives: The repetitive elements within the genome of eukaryotes form a significant portion and are associated with various molecular functions within a cell. The goal of our study is to determine a special type of repeat i.e., mirror repeat within complete ced-3 apoptotic gene and its exons. Methods: A simple computational approach was used to search mirror repeats within the eight exons and complete ced-3 gene of Caenorhabditis elegans (C. elegans). C. elegans is a model organism widely used to study genetics, and developmental biology and ced-3 is the main apoptotic gene responsible for cell death. Findings: We identified 140 mirror repeats within the different regions of the ced-3 gene of C. elegans. These identified mirror repeats are not restricted to the genome of C. elegans but are scattered among the genome of C. vulgaris, Xenopus tropicalis and Drosophila melanogaster. Novelty: This research work is the very first endeavor to characterize mirror repeats within the complete ced-3 gene and its exons. Nobody has been studied mirror repeats within ced-3 apoptotic gene of C. elegans. Mirror repeat has the potential to form triplex DNA and is also associated with several neurological disorders. Forthcoming studies will help us to explore the functions and nature of these identified mirror repeats. Keywords: Repetitive elements, mirror repeats, Caenorhabditis elegans and ced-3 gene","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"13 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141271516","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}

引用次数: 0

Study of Photogalvanic Effect by using Marigold Flower as Natural Photosensitizer, Xylose as Reductant and Tween 80 as Surfactant for Solar Radiation Conversion and Storage 利用万寿菊花作为天然光敏剂、木糖作为还原剂和吐温 80 作为表面活性剂进行太阳辐射转换和储存的光电效应研究

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.571

Shantanu Mishra, Sushil Kumar Yadav

{"title":"Study of Photogalvanic Effect by using Marigold Flower as Natural Photosensitizer, Xylose as Reductant and Tween 80 as Surfactant for Solar Radiation Conversion and Storage","authors":"Shantanu Mishra, Sushil Kumar Yadav","doi":"10.17485/ijst/v17i22.571","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.571","url":null,"abstract":"Objective: A study work plan has been put up for methodical work in the field of solar energy Photogalvanic (PG) cells. It was suggested and required to do experiments with PG cells in sunlight conditions. Improving the conversion of solar energy into electricity and storing it in PG cells is the goal of our study. Method: An H-shaped glass tube with two arms was manufactured using the specially developed PG (Figure 1) cell. Many characteristics of a PG cell with an MG+D-Xylose+Tween-80 system was investigated. Findings: The open circuit voltage, voltage at dark, photopotential (PP), and photocurrent (PC) recorded in this investigation are 1080.00 mV, 165.00 mV, 915.00 mV, and 674.00 µA, respectively. The Fill Factor (FF) and Conversion Efficiency (CE) that were observed 1.891% and 0.2732, respectively. Novelty: Through the adjustment of PG cells' numerous parameters, the effects of solar energy were investigated. Based on the aforementioned results, PG systems have demonstrated through experimentation that they are an effective system and should be further investigated, particularly with regard to improving solar energy output and storage. Keywords: D-Xylose, Tween - 80, Marigold, Photocurrent, Natural dye","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"52 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141269564","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}

引用次数: 0

Application of Fixed Point Theorems to Differential Equation in b-Multiplicative Metric Spaces 定点定理在 b 倍增度量空间微分方程中的应用

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.1272

J. Jarvisvivin, A. P. Dharsini

引用次数: 0

Type (K) Compatible Mappings and Common Fixed Points in Complete Cone S-metric Spaces 完整圆锥 S-度量空间中的（K）型兼容映射和公共定点

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.1431

V. Rao, U. Dixit

引用次数: 0

Difference Ordered G􀀀 Semirings 差分有序 G􀀀 Semirings

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.1077

T. R. Sharma, Rajesh Kumar

{"title":"Difference Ordered G􀀀 Semirings","authors":"T. R. Sharma, Rajesh Kumar","doi":"10.17485/ijst/v17i22.1077","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.1077","url":null,"abstract":"Objectives: In this study, we generalize some of the difference ordered and weak uniquely difference ordered semirings results. Methods: To establish the results in semirings, we use conditions like commutativity, simple, multiplicative cancellative, additively idempotent on difference-ordered, and weak uniquely difference-ordered semirings. Findings: First, we give some examples of difference ordered semiring, and weak difference ordered semirings. Then generalize some of the results of semirings to semirings and discuss some of the properties of additive idempotent semifield. Novelty: We find that if is a non-zeroic difference ordered semiring then is a strong ideal of Let be a positive difference ordered Gel’fand semiring then every maximal non-unit of is prime. Further, we find that if is a simple difference ordered additively idempotent semiring and which is not a unit then is prime if and only if there exists a character : satisfying Moreover, if and are distinct prime elements of Then and are also distinct. Finally, we consider some properties of additive idempotent semifield and then introduce the concept of weak uniquely difference-ordered semirings. AMS Mathematics subject classification (2020): 16Y60. Keywords: Γ-semiring, Difference ordered Γ-semiring, Additively idempotent Γ- semiring, Strong identity, Weak uniquely difference-ordered Γ-semirings","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"38 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141268992","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}

引用次数: 0

Response Surface Optimization for Compliant Joint of Humanoid Robot Using ANSYS - Design of Experiment 使用 ANSYS 对仿人机器人的顺应性关节进行响应面优化 - 试验设计

Indian journal of science and technology Pub Date : 2024-06-03 DOI: 10.17485/ijst/v17i22.3169

Alpeshkumar B Damor, Vinay J Patel

{"title":"Response Surface Optimization for Compliant Joint of Humanoid Robot Using ANSYS - Design of Experiment","authors":"Alpeshkumar B Damor, Vinay J Patel","doi":"10.17485/ijst/v17i22.3169","DOIUrl":"https://doi.org/10.17485/ijst/v17i22.3169","url":null,"abstract":"Objective: A Compliant Joint of humanoid robot is a spring-loaded assembly, which is used to interact safely with the environment, and it helps to stabilized sudden shock and vibration in the robotic system. At the moment, compliant joints are required to optimize their size and dimensions which result into optimized weight and factor of safety of humanoid robot. Methods: Analysis is carried out using Response Surface Methodology (RSM) and Multi-Objective Genetic Algorithm (MOGA) using ANSYS. The current study employed goal-driven optimisation using ANSYS Workbench to minimise weight and achieve the required factor of safety range for the compliant joint. To find out range of variables such as rim thickness, shaft diameter, base thickness, module thickness and spoke thickness affecting on responses such as factor of safety and geometrical mass of compliant joint single factor single response parametric analysis is carried out. Findings: Based on trend of preliminary analysis variable range and combinations are selected to study interaction effect of parameters to obtain favorable factor of safety and low geometrical mass. The optimized compliant joint is compared with various design and validated through the developed actual module. Novelty: Eventually, the geometry mass of the compliant joint was reduced from 0.8604 kg to 0.6449 kg, resulting in a lighter weight (24.06% reduction) with a 1.7533 factor of safety and more compact in size (outer diameter is shrink from 142 to 126 mm). Keywords: Compliant joint, Goal driven optimization, Response surface optimization, Design of experiment, Humanoid robot","PeriodicalId":13296,"journal":{"name":"Indian journal of science and technology","volume":"25 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270790","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}

引用次数: 0