Bi-level optimization constitutes the most popular mathematical methodology for modeling the deregulated electricity market. However, state-of-the-art models neglect the physical non-convex operating characteristics of market participants, due to their inherent inability to capture binary decision variables in their representation of the market cle...
This paper builds a Food Delivery Network (FooDNet in short) using spatial crowdsourcing. It investigates the participation of urban taxis to support on demand take-out food delivery. Unlike existing SC-enabled service sharing systems, the delivery of food in FooDNet is more time-sensitive and the optimization problem is more complex regarding high...
The following presents an approach to early applications of the Galapagos program as a means to optimize structural forms. The process was conducted with Rhino’s Grasshopper program, the structural analysis plug-in, Karamba, and the genetic algorithm solver, Galapagos. This topological form finding process was based on flexible parameters that modi...
Published in Safety and health at work
Ice cooling vests can cause tissue damage and have no flexibility. Therefore, these two undesirable properties of ice cooling vest were optimized, and the present study was aimed to compare the impact of the optimized ice cooling vest and a commercial paraffin cooling vest on physiological and perceptual strain under controlled conditions. For opti...
Abstract The production of protease from Bacillus licheniformis LBA 46 was studied in a 6 L reactor using the experimental design tool. The higher protease production was obtained in the exponential phase of growth reaching maximum activity (~3,000 U/mL) after 48 h of fermentation at 30 ºC and 300 rpm in a culture medium made of agroindustrial by-p...
Published in Molecular Biology Reports
A new thermophilic non-induced lipase producer named Serratia rubidaea strain Nehal-mou was isolated from oil waste in Tissemsilat, Algeria. The most influential lipase production parameters were screened by the Plackett–Burman design for enhancing enzyme yield. An optimum condition of a 1.5% of glucose, a 0.01% of potassium, and a 0.025% of mangan...
Published in International Journal of Applied and Computational Mathematics
An economic production quantity (EPQ) inventory model for a multiproduct single-machine production system with stochastic scrapped production rate, partial backordering and service level constraint is proposed. This research work revisits this EPQ inventory model and identifies some technical inconsistencies in it. Additionally, some observations a...
Published in European Transport Research Review
Intelligent Transportation Systems (ITS) applications in public transportation have allowed for automated data collection, which is particularly useful for planning and operations. While technological advancement of ITS has so far been extensive, their usage for developing relevant planning and operational tools is rather limited. Research on plann...
Sailing against the wind follows a zig-zag trajectory. To find the optimal time and path-trajectory to move from one target to another during a race, this study analyzes how the wind determines the optimal time-path of Lasers, one of the smallest sailboats that compete during the summer Olympic Games.
To answer this question, this study uses four wi...
Published in Fibers and Polymers
The aim of this study is to prepare a polypropylene nonwoven with the ability to adsorb both anionic and cationic compounds from aqueous media. Polypropylene nonwoven was activated with oxygen plasma and acrylic acid was grafted on it. Then, poly(propylene imine) dendrimer was grafted on it by a pad-dry-cure process. The effect of three parameters ...
