37 research outputs found
A Hybrid Genetic Scatter Search Algorithm to Solve Flexible Job Shop Scheduling Problems
No full textScheduling is one of the most important problems in production planning systems. It is a decision-making process that plays a crucial role in many Industries. Different scheduling environments were addressed in the literature. Among them Flexible job-shop problem (FJSP) is an important one and it is an extension of the classical JSP that allows one operation which can be processed on one machine out of a set of alternative machines. It is closer to the real manufacturing situation. Because of the additional needs to determine the assignment of operations on the machines, FJSP is more complex than JSP, and incorporates all the difficulties and complexities of JSP. This chapter addresses a hybrid genetic scatter search algorithm for solving multi-objective FJSP. Makespan and flow time are the objective functions considered in this chapter. The computational results prove the effectiveness of the proposed algorithm for solving flexible job-shop scheduling problem. </jats:p
Cuckoo Search Algorithm for Solving Real Industrial Multi-Objective Scheduling Problems
No full textA multistage hybrid flow shop scheduling problem is considered in this chapper with the objective of minimizing the makespan and mean flow time. Since the problem is NP-hard in nature, many heuristics and meta-heuristics were developed by the researchers. cuckoo search algorithm is one of the recently developed meta–heuristic algorithms inspired by the social behavior of cuckoos. The cuckoo search algorithm is presented in this paper to solve the hybrid flow shop scheduling problems. To illustrate the proposed algorithm, data sets from a steel furniture manufacturing company are used. The computational results show that the proposed algorithm is better than many other algorithms. </jats:p
Investigation of Fiber-Based Bag Filter Coated with Metal Oxides for Dust Adsorption
No full textThe production of cement increases every year, which leads to the emission of dust/gas/ particulate matter. The emission of unfiltered dust would create a significant environmental impact. Hence, it is the responsibility of industries to control the emission of dust. Air filters and electrostatic precipitators (ESP) play a significant role in controlling pollutants. Synthetic filter media which are dangerous to our environment are widely used in most industries. The disposal of synthetic filters is an arduous task as the biodegradability of synthetic materials is poor. Hence, it is essential to develop an eco-friendly air filter material. In this paper, a new type of bag filter was designed by using natural sisal fiber as filtering media. The biodegradability of sisal fiber is better than the synthetic polyester media and also sisal fiber is less expensive. The natural fibers were coated with zinc oxide and iron oxide nanoparticles to improve the dust adsorption rate. Various tests were conducted as per standards to validate the performance of the filler media. The results were impressive. Hence, the proposed sisal fiber-based filter media can be used in cement industries for dust adsorption to minimize the environmental impact
Corrigendum to "European Association of Urology Guidelines on Muscle-invasive and Metastatic Bladder Cancer: Summary of the 2023 Guidelines” [Eur. Urol. 85 (2024) 17–31, (S0302283823030737), (10.1016/j.eururo.2023.08.016)]
No full textThe authors regret the oversight in the initially published version of this article, where the name of Prof. Paramananthan Mariappan, along with his affiliation to the Edinburgh Bladder Cancer Surgery (EBCS), Western General Hospital, at The University of Edinburgh, Edinburgh, United Kingdom, was inadvertently omitted from the author list. This has now been updated. The authors would like to apologise for any inconvenience caused
An Improved Monkey Search Algorithm to Solve the Flexible Job Shop Scheduling Problems With Makespan Objective
No full textManufacturing Processes for Permanent Magnets: Part II—Bonding and Emerging Methods
No full textPermanent magnets produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. They are widely used in electric machines, electronics, and medical devices. Part I reviews the conventional manufacturing processes for commercial magnets, including Nd-Fe-B, Sm-Co, alnico, and ferrite in cast and sintered forms. In Part II, bonding, emerging advanced manufacturing processes, as well as magnet recycling methods are briefly reviewed for their current status, challenges, and future directions.This article is published as Cui, Jun, John Ormerod, David S. Parker, Ryan Ott, Andriy Palasyuk, Scott McCall, Mariappan Parans Paranthaman et al. "Manufacturing Processes for Permanent Magnets: Part II—Bonding and Emerging Methods." JOM 74, no. 6 (2022): 2492-2506.
DOI: 10.1007/s11837-022-05188-1.
Copyright 2022 The Author(s).
Attribution 4.0 International (CC BY 4.0).
Posted with permission.
DOE Contract Number(s): AC05-00OR22725; AC02-07CH11358; AC52- 07NA27344
Electrochemical performance of spinel-type Ni doped ZnCo2O4 mesoporous rods as an electrode for supercapacitors
No full textSynthesis, characterization, bioactivity and antibacterial studies of silver doped calcium borosilicate glass-ceramics
No full textThermal stability of anisotropic bonded magnets prepared by additive manufacturing
No full textIn this research, anisotropic NdFeB + SmFeN hybrid and NdFeB bonded magnets are additively printed in a polyphenylene sulfide (PPS) polymer binder. Printed NdFeB + SmFeN PPS bonded magnets displayed excellent magnetic properties (Br [remanence] = 6.9 kG [0.69 T], Hcj [coercivity] = 8.3 kOe [660 kA/m], and BHmax [energy product] = 9.9 MGOe [79 kJ/m3]) with superior corrosion resistance and thermal stability. The anisotropic NdFeB bonded magnet shows a high coercivity of 14.6 kOe (1162 kA/m) with a BHmax of 8.7 MGOe (69 kJ/m3). The coercivity and remanence temperature coefficients for NdFeB + SmFeN hybrid bonded magnets are −0.10%/K and −0.46%/K, and for NdFeB bonded magnets are −0.14%/K and −0.53%/K in the range of 300–400 K, indicating that the hybrid bonded magnets are thermally stable. The average flux aging loss for hybrid magnets was also determined to be very stable over 2000 h at 448 K (175°C) in air with 2.04% compared to that of NdFeB magnets with 3.62%.This article is published as Gandha, Kinjal, Mariappan Parans Paranthaman, Haobo Wang, Xubo Liu, and Ikenna C. Nlebedim. "Thermal stability of anisotropic bonded magnets prepared by additive manufacturing." Journal of the American Ceramic Society 106, no. 1 (2023): 166-171.
DOI: 10.1111/jace.18609
Copyright 2022 The Author(s).
Attribution 4.0 International (CC BY 4.0).
Posted with permission.
DOE Contract Number(s): AC02-07CH11358; AC05-00OR22725
