International Journal of Mathematical Engineering and Management Sciences最新文献_第5页

Dynamic Analysis and Control of Redundant Manipulator for Agricultural Applications in a Virtual Environment 虚拟环境下农业应用冗余度机械手的动力学分析与控制

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.041

A. Reddy, V. V. M. J. S. Chembuly, V. Rao

{"title":"Dynamic Analysis and Control of Redundant Manipulator for Agricultural Applications in a Virtual Environment","authors":"A. Reddy, V. V. M. J. S. Chembuly, V. Rao","doi":"10.33889/ijmems.2023.8.4.041","DOIUrl":"https://doi.org/10.33889/ijmems.2023.8.4.041","url":null,"abstract":"In the development of automated manipulators for fruit and vegetable picking technologies, the challenge of ensuring an efficient, stable, and loss-free picking process has been a complex problem. In such an environment, manipulators require the most efficient and robust control for effective operations. In this paper, a serial 9-DOF redundant manipulator (1P8R) is proposed with various controllers for trajectory tracking problems in agricultural applications. The dynamic analysis of redundant manipulator has been carried out using the Recursive Newton-Euler method. The joint configurations of the robot are determined using optimization techniques for specific Task Space Locations (TSLs) by avoiding obstacles. The process of generating joint trajectories has been implemented by considering the cubic polynomial function. For the task of controlling the robot trajectory tracking in the virtual agricultural environment, different combinations of Proportional (P), Integrative (I), Derivative (D), and Feed-Forward (FF) controllers are employed, and a comparative analysis has been performed among these controllers. To verify the performance of the manipulator, simulations are carried out in a virtual environment using Simulink software. Results show that the robot is able to reach specific TSL accurately with better control and it is found that the implementation of Feed-Forward and PID-CTC controllers has better performance in a complex environment.","PeriodicalId":44185,"journal":{"name":"International Journal of Mathematical Engineering and Management Sciences","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42155888","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

System-Level Dependability Analysis of Bitcoin under Eclipse and 51% Attacks Eclipse和51%攻击下比特币的系统级可靠性分析

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.031

Chencheng Zhou, L. Xing, Qisi Liu, Yuzhu Li

引用次数: 0

Performance Analysis of a Retrial Queueing System with Optional Service, Unreliable Server, Balking and Feedback 具有可选服务、不可靠服务器、犹豫和反馈的重试排队系统的性能分析

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.044

V. Saravanan, V. Poongothai, P. Godhandaraman

{"title":"Performance Analysis of a Retrial Queueing System with Optional Service, Unreliable Server, Balking and Feedback","authors":"V. Saravanan, V. Poongothai, P. Godhandaraman","doi":"10.33889/ijmems.2023.8.4.044","DOIUrl":"https://doi.org/10.33889/ijmems.2023.8.4.044","url":null,"abstract":"This paper considers a Markovian retrial queueing system with an optional service, unreliable server, balking and feedback. An arriving customer can avail of immediate service if the server is free. If the potential customer encounters a busy server, it may either join the orbit or balk the system. The customers may retry their request for service from the orbit after a random amount of time. Each customer gets the First Essential Service (FES). After the completion of FES, the customers may seek the Second Optional Service (SOS) or leave the system. In the event of unforeseen circumstances, the server may encounter a breakdown, at which point an immediate repair process will be initiated. After the service completion, the customer may leave the system or re-join the orbit if not satisfied and demand regular service as feedback. In this investigation, the stationary queue size distributions are framed using a recursive approach. Various system performance measures are derived. The effects induced by the system parameters on the performance metrics are numerically and graphically analysed.","PeriodicalId":44185,"journal":{"name":"International Journal of Mathematical Engineering and Management Sciences","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48747752","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

Approximation of the Time-Fractional Klein-Gordon Equation using the Integral and Projected Differential Transform Methods 用积分和投影微分变换方法逼近时间分数阶Klein-Gordon方程

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.039

Manoj K. Singh

引用次数: 0

An Enhancement in Single-Image Dehazing Employing Contrastive Attention over Variational Auto-Encoder (CA-VAE) Method 基于变分自编码器(CA-VAE)方法的对比注意增强单幅图像去雾

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.042

Sandeep Vishwakarma, Anuradha Pillai, Deepika Punj

{"title":"An Enhancement in Single-Image Dehazing Employing Contrastive Attention over Variational Auto-Encoder (CA-VAE) Method","authors":"Sandeep Vishwakarma, Anuradha Pillai, Deepika Punj","doi":"10.33889/ijmems.2023.8.4.042","DOIUrl":"https://doi.org/10.33889/ijmems.2023.8.4.042","url":null,"abstract":"Hazy images and videos have low contrast and poor visibility. Fog, ice fog, steam fog, smoke, volcanic ash, dust, and snow are all terrible conditions for capturing images and worsening color and contrast. Computer vision applications often fail due to image degradation. Hazy images and videos with skewed color contrasts and low visibility affect photometric analysis, object identification, and target tracking. Computer programs can classify and comprehend images using image haze reduction algorithms. Image dehazing now uses deep learning approaches. The observed negative correlation between depth and the difference between the hazy image’s maximum and lowest color channels inspired the suggested study. Using a contrasting attention mechanism spanning sub-pixels and blocks, we offer a unique attention method to create high-quality, haze-free pictures. The L*a*b* color model has been proposed as an effective color space for dehazing images. A variational auto-encoder-based dehazing network may also be utilized for training since it compresses and attempts to reconstruct input images. Estimating hundreds of image-impacting characteristics may be necessary. In a variational auto-encoder, fuzzy input images are directly given a Gaussian probability distribution, and the variational auto-encoder estimates the distribution parameters. A quantitative and qualitative study of the RESIDE dataset will show the suggested method's accuracy and resilience. RESIDE’s subsets of synthetic and real-world single-image dehazing examples are utilized for training and assessment. Enhance the structural similarity index measure (SSIM) and peak signal-to-noise ratio metrics (PSNR).","PeriodicalId":44185,"journal":{"name":"International Journal of Mathematical Engineering and Management Sciences","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47577112","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

Barriers to Cement Industry Towards Circular Economy 水泥工业走向循环经济的障碍

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.035

Erhan Ada, Y. Kazançoğlu, S. Mangla, U. Aydın

{"title":"Barriers to Cement Industry Towards Circular Economy","authors":"Erhan Ada, Y. Kazançoğlu, S. Mangla, U. Aydın","doi":"10.33889/ijmems.2023.8.4.035","DOIUrl":"https://doi.org/10.33889/ijmems.2023.8.4.035","url":null,"abstract":"Cement, as the main component of concrete, is a crucial industrial product for economic development and civilization. Nevertheless, its production is highly energy-intensive, environmentally polluting, and a source of extreme CO2 emissions. For success in the transition to the circular economy and accelerating sustainable manufacturing in the cement industry, understanding and addressing the main barriers are essential. Using the above point of view, this study intends to address the challenges and barriers of the cement industry in the transition to a circular economy, define the causal relationships between these barriers, and determine the necessary practical implications to overcome the barriers. Systematic literature review and focus group study results enable a holistic model that integrates research results and business practical criteria. The DEMATEL method is used for the clarification of causal relations between factors. A total of 18 barriers in 6 clusters have been revealed to be used for managerial implications to speed up the transition to CE applications in the cement business. Out of 18 barriers, 6 were effect groups, which were the outcomes due to the remaining 12 causing barriers. The top three cause factors are an unstable waste market, lack of management competencies, and unstable macroeconomic conditions, while the leading three effect factors are revealed as giving priority to other issues, insufficient organisational structures, and deviations in product quality. Although there are many studies on CE in cement, they are concentrated on technical and laboratory studies enabling the use of different alternative materials as inputs to the cement process. Studying and revealing the barriers holding back the cement sector in the transition to CE is this study’s core contribution, making it novel and unique.","PeriodicalId":44185,"journal":{"name":"International Journal of Mathematical Engineering and Management Sciences","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43134227","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

Dynamic Advertising-based Goodwill Incorporating Fuzzy Environment in Segment-Specific Market 细分市场中基于模糊环境的动态广告商誉

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-08-01 DOI: 10.33889/ijmems.2023.8.4.040

Pradeep Kumar, Kuldeep Chaudhary, Vijay Kumar, Vijay Singh

引用次数: 0

Non-dyadic Haar Wavelet Algorithm for the Approximated Solution of Higher order Integro-Differential Equations 高阶积分微分方程近似解的非二进Haar小波算法

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-07-01 DOI: 10.33889/ijmems.2023.8.4.045

Ratesh Kumar, Sabiha Bakhtawar

{"title":"Non-dyadic Haar Wavelet Algorithm for the Approximated Solution of Higher order Integro-Differential Equations","authors":"Ratesh Kumar, Sabiha Bakhtawar","doi":"10.33889/ijmems.2023.8.4.045","DOIUrl":"https://doi.org/10.33889/ijmems.2023.8.4.045","url":null,"abstract":"The objective of this study is to explore non-dyadic Haar wavelets for higher order integro-differential equations. In this research article, non-dyadic collocation method is introduced by using Haar wavelet for approximating the solution of higher order integrodifferential equations of Volterra and Fredholm type. The highest order derivatives in the integrodifferential equations are approximated by the finite series of non-dyadic Haar wavelet and then lower order derivatives are calculated by the process of integration. The integro-differential equations are reduced to a set of linear algebraic equations using the collocation approach. The Gauss - Jordan method is then used to solve the resulting system of equations. To demonstrate the efficiency and accuracy of the proposed method, numerous illustrative examples are given. Also, the approximated solution produced by the proposed wavelet technique have been compared with those of other approaches. The exact solution is also compared to the approximated solution and presented through tables and graphs. For various numbers of collocation points, different errors are calculated. The outcomes demonstrate the effectiveness of the Haar approach in resolving these equations.","PeriodicalId":44185,"journal":{"name":"International Journal of Mathematical Engineering and Management Sciences","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44388260","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

Mérnöktanár-képzés – Taneszközök kiválasztása

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-06-30 DOI: 10.21791/ijems.2023.2.10.

Rita Nagyné Kondor

引用次数: 0

Component development using Topological Methods 使用拓扑方法进行组件开发

IF 1.6

International Journal of Mathematical Engineering and Management Sciences Pub Date : 2023-06-30 DOI: 10.21791/ijems.2023.2.6.

Kristóf Szabó

引用次数: 0