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Found 6674 publications

Selection of straw waste reinforced sustainable polymer composite using a multi-criteria decision-making approach

I. Fekete László Lendvai Tej Singh Sándor K. Jakab

Publication Name: Biomass Conversion and Biorefinery

Publication Date: 2024-09-01

Volume: 14

Issue: 17

Page Range: 21007-21017

Description:

The valorization of straw waste as a sustainable and eco-friendly resource in polymer composites is critical for resource recycling and environmental preservation. Therefore, many research works are being carried out regarding the development of wheat straw-based polymer composites to identify the reinforcing potential of these sustainable resources. In this study, three different sizes of wheat straw fibers (60–120 mesh, 35–60 mesh, and 18–35 mesh) were used, and their different ratios (0, 2.5, 5, 10, and 20% by weight) were systematically investigated for the physical and mechanical properties of polypropylene-based sustainable composites. The results indicated that the evaluated composites’ properties are strongly dependent on the quantity and size of the utilized wheat straw. Therefore, a preference selection index was applied to rank the developed sustainable polymer composites to select the best composition. Various properties of the composite materials were considered as criteria for ranking the alternatives, namely tensile strength and modulus, flexural stress at conventional deflection and flexural modulus, impact strength, density, water absorption, material cost, and carbon footprint. The decision-making analysis suggests the alternative with wheat straw content of 20 wt.% (35–60 mesh size) dominating the performance by maximizing the beneficial criteria and minimizing the non-beneficial criteria, making it the most suitable alternative. This study will significantly help formulation designers to deal with the amount and size issues when developing polymeric composites.

Open Access: Yes

DOI: 10.1007/s13399-023-04132-w

Altered blood glucose dynamics during and after anhepatic phase of liver transplantation: A model-based approach

Balazs Benyo J. Geoffrey Chase Jozsef Homlok Paul Docherty Katalin Kovacs

Publication Name: Ines 2013 IEEE 17th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2013-12-12

Volume: Unknown

Issue: Unknown

Page Range: 65-68

Description:

During liver transplantation (LT) the glucose metabolism is effected by a crucial disturbance. The blood glucose level is extremely hard to control by conventional clinical protocols during this phase. Model based approach can enhance the blood glucose control during the anhepatic phase (absence of liver) and post-anhepatic phase. The physiological constants of validated clinical metabolic model were slightly modified based on previous studies. The model fitting errors and the sufficient capture of the blood glucose (BG) dynamic evinced the applicability of the model. However the sufficient per-patient estimation of endogenous production could more enhance the performance of the model based BG prediction. © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/INES.2013.6632784

Reconstruction of accidents involving commercial vehicles rollover

Gyula Kőfalvi

Publication Name: European Automobile Engineers Cooperation 10th Eaec European Automotive Congress Eaec 2005

Publication Date: 2005-12-01

Volume: 3

Issue: Unknown

Page Range: 1056-1069

Description:

No description provided

Open Access: Yes

DOI: DOI not available

CONVERGENCE STRATEGIES FOR OPTIMIZING ANTENNA SELECTION IN A COMMUNICATION SYSTEM: A COMPLEX LINEAR DIOPHANTINE FUZZY SOFT SET APPROACH

Dragan Pamucar J. Vimala Xindong Peng P. Mahalakshmi K. Ashma Banu

Publication Name: Applied Engineering Letters

Publication Date: 2024-09-01

Volume: 9

Issue: 3

Page Range: 146-161

Description:

The need to grow in a secure and tranquil environment demands the efforts of an armed force, and only with a strong-armed force can a country ensure its national security. In military activities, communication devices are widely used to confuse enemies' radars or communications to abandon their strategies and execute planned actions. The range of communication devices depends mainly on the antennas used. Army sustainability goals are to upgrade the effectiveness of the mission, reduce army environmental impact, build green sustainable structures, and attain the energy level independence that improves the continuity of operations which are indispensable to the mission. The primary goal of this paper is to present an innovative mathematical model for selecting pertinent antennae in communication devices using an innovative idea called a Complex Linear Diophantine Fuzzy Soft set based on the various attributes by incorporating decision-making techniques. Also, some of its beneficial operations such as Complement, AND, OR, Extended Union, and Extended Intersection, are presented in concert with the properties and theorems to apprise the viability of the proposed paper. This concept is more applicable and necessary to assess real-life situations using mathematical modeling.

Open Access: Yes

DOI: 10.46793/aeletters.2024.9.3.3

Performance study of domain decomposition methods for 2D parallel finite element analysis

Miklós Kuczmann D. Marcsa

Publication Name: Pollack Periodica

Publication Date: 2013-12-01

Volume: 8

Issue: 3

Page Range: 47-58

Description:

The aim of this paper is to give a unified comparison of non-overlapping domain decomposition methods for solving magnetic field problems. The methods under investigation are the Schur complement method and the Lagrange multiplier based finite element tearing and interconnecting method, and their solvers. The performance of these methods has been investigated in detail for two-dimensional magnetic field problems as case studies.

Open Access: Yes

DOI: 10.1556/Pollack.8.2013.3.5

An overview of research trends in CogInfoCom

Adam B. Csapo Peter Varlaki Peter Baranyi

Publication Name: Ines 2014 IEEE 18th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2014-09-24

Volume: Unknown

Issue: Unknown

Page Range: 181-186

Description:

Cognitive infocommunications (CogInfoCom) is an interdisciplinary field that targets engineering applications based on emergent synergies between ICT and the cognitive sciences. The unique perspective of CogInfoCom enables researchers to focus on both the qualitative and quantitative analysis of cognitive capabilities in application areas where humans are becoming increasingly entangled with and dependent on intelligent networked services. An international conference on the field has been held every year since 2010, and the two most recent events have been supported by the IEEE. In this paper, we provide an overview of the various research directions which have been represented at the conference series, and which have as a result gained strong relevance to CogInfoCom during the past few years.

Open Access: Yes

DOI: 10.1109/INES.2014.6909365

New effective MILP models for PFSPs arising from real applications

Tamás Hajba Zoltán Horváth

Publication Name: Central European Journal of Operations Research

Publication Date: 2013-12-01

Volume: 21

Issue: 4

Page Range: 729-744

Description:

Permutation flow shop problems (PFSPs) with makespan minimization that model production lines working in industry often have some special features: they are typically large-scale and the jobs can be sorted into types so that jobs of the same type have equal processing time values at each machine. We define the related R-PFSP, the Permutation with Repetition Flow Shop Problem, which is of less complexity if the number of types is bounded. Moreover, a subproblem set of R-PFSPs, the RL-PFSP is considered too, where only those permutations are in the design space in which subsequent tuples of a certain size contain jobs of the same type. We construct adequate new MILP models for R-PFSPs and RL-PFSPs and investigate their effectiveness experimentally. We demonstrate that via our new MILP models significantly larger problems can be solved than via the classical MILP models. © 2012 Springer-Verlag.

Open Access: Yes

DOI: 10.1007/s10100-012-0263-6

ESG Ratings, Scope Emissions, and Corporate Creditworthiness: Insights into Rating Divergence in the U.S. and EU

Árpád Tóth Bence Lukács

Publication Name: Ecocycles

Publication Date: 2025-01-01

Volume: 11

Issue: 2

Page Range: 27-34

Description:

This study explores the relationship between corporate credit ratings, Environmental, Social, and Governance (ESG) ratings, and Scope 1, 2, and 3 emissions for the largest 100 publicly traded companies by market capitalization in the U.S. and the EU. By integrating credit ratings from Moody’s and S&P Global, ESG ratings from Refinitiv and S&P Global, and emissions data from corporate sustainability reports, this research addresses the inconsistencies in how emissions transparency impacts creditworthiness. Employing statistical analyses such as correlation, regression, and quartile comparisons, the study provides novel insights into the weak association between ESG ratings and actual emissions performance. The findings reveal that higher credit-rated companies tend to report higher Scope 1 and 2 emissions, while ESG ratings, despite being seen as indicators of sustainability, fail to consistently reflect a company’s emissions data, particularly Scope 3 emissions. This study contributes to the literature by underlining the methodological divergences among ESG rating agencies, emphasizing their limited alignment with environmental performance metrics. Highlighting the need for a standardized ESG reporting framework, this paper calls attention to the limitations of current ESG scores as a proxy for corporate sustainability and their implications for credit rating assessments.

Open Access: Yes

DOI: 10.19040/ecocycles.v11i2.498

Fuzzy set based models comparative study for the td tsp with rush hours and traffic regions

Péter Földesi Boldizsár Tüű-Szabó Ruba Almahasneh László T. Kóczy

Publication Name: Communications in Computer and Information Science

Publication Date: 2020-01-01

Volume: 1238 CCIS

Issue: Unknown

Page Range: 699-714

Description:

This study compares three fuzzy based model approaches for solving a realistic extension of the Time Dependent Traveling Salesman Problem. First, the triple Fuzzy (3FTD TSP) model, where the uncertain costs between the nodes depend on time are expressed by fuzzy sets. Second, the intuitionistic fuzzy (IFTD TSP) approach, where including hesitation was suitable for quantifying the jam regions and the bimodal rush hour periods during the day. Third, the interval-valued intuitionistic fuzzy sets model, that calculates the interval-valued intuitionistic fuzzy weighted arithmetic average (IIFWAA) of the edges’ confirmability degrees and non-confirmability degrees, was contributing in minimizing the information loss in cost (delay) calculation between nodes.

Open Access: Yes

DOI: 10.1007/978-3-030-50143-3_55