Exact mathematical formulations and metaheuristic algorithms for production cost minimization: a case study of the cable industry

2014 ◽  
Vol 22 (3) ◽  
pp. 519-544 ◽  
Author(s):  
Sadegh Niroomand ◽  
Bela Vizvari
Keyword(s):  
Production Cost ◽  
Cost Minimization ◽  
Metaheuristic Algorithms ◽  
Cable Industry

scholarly journals Metaheuristic techniques comparison to optimize robotic end-effector behavior and its workspace

2018 ◽  
Vol 15 (5) ◽  
pp. 172988141880113
Author(s):  
Miguel Angel Funes Lora ◽  
Edgar Alfredo Portilla-Flores ◽  
Raul Rivera Blas ◽  
Emmanuel Alejandro Merchán Cruz ◽  
Manuel Faraón Carbajal Romero
Keyword(s):  
Numerical Technique ◽  
Cuckoo Search ◽  
Optimization Methods ◽  
Metaheuristic Algorithms ◽  
End Effector ◽  
Bee Colony ◽  
Ill Posed ◽  
Metaheuristic Techniques

Many robots are dedicated to replicate trajectories recorded manually; the recorded trajectories may contain singularities, which occur when positions and/or orientations are not achievable by the robot. The optimization of those trajectories is a complex issue and classical optimization methods present a deficient performance when solving them. Metaheuristics are well-known methodologies for solving hard engineering problems. In this case, they are applied to obtain alternative trajectories that pass as closely as possible to the original one, reorienting the end-effector and displacing its position to avoid the singularities caused by limitations of inverse kinematics equations, the task, and the workspace. In this article, alternative solutions for an ill-posed problem concerning the behavior of the robotic end-effector position and orientation are proposed using metaheuristic algorithms such as cuckoo search, differential evolution, and modified artificial bee colony. The case study for this work considers a three-revolute robot (3R), whose trajectories can contain or not singularities, and an optimization problem is defined to minimize the objective function that represents the error of the alternative trajectories. A tournament in combination with a constant of proportionality allows the metaheuristics to modify the gradual orientation and position of the robot when a singularity is present. Consequently, the procedure selects from all the possible elbow-configurations the best that fits the trajectory. A classical numerical technique, Newton’s method, is used to compare the results of the applied metaheuristics, to evaluate their quality. The results of this implementation indicate that metaheuristic algorithms are an efficient tool to solve the problem of optimizing the end-effector behavior, because of the quality of the alternative trajectory produced.

DIMMA

2010 ◽  
Vol 1 (4) ◽  
pp. 57-74 ◽  
Author(s):  
Masoud Yaghini ◽  
Rahim Akhavan
Keyword(s):  
Tabu Search ◽  
Optimization Problems ◽  
Travelling Salesman Problem ◽  
Metaheuristic Algorithms ◽  
Standard Process ◽  
Travelling Salesman ◽  
Design And Implementation ◽  
The Future ◽  
Implementation Methodology

Metaheuristic algorithms will gain more and more popularity in the future as optimization problems are increasing in size and complexity. In order to record experiences and allow project to be replicated, a standard process as a methodology for designing and implementing metaheuristic algorithms is necessary. To the best of the authors’ knowledge, no methodology has been proposed in literature for this purpose. This paper presents a Design and Implementation Methodology for Metaheuristic Algorithms, named DIMMA. The proposed methodology consists of three main phases and each phase has several steps in which activities that must be carried out are clearly defined in this paper. In addition, design and implementation of tabu search metaheuristic for travelling salesman problem is done as a case study to illustrate applicability of DIMMA.

scholarly journals Manfaat Asuransi Usahatani Padi dalam Menanggulangi Risiko Kerusakan Akibat Hama Penyakit (Studi Kasus pada Subak Sangeh, Desa Sangeh, Kecamatan Abiansemal, Kabupaten Badung, Provinsi Bali)

2019 ◽  
pp. 11
Author(s):  
NI KADEK MARITA DEWI ◽  
KETUT BUDI SUSRUSA ◽  
IDA AYU LISTIA DEWI
Keyword(s):  
Production Cost ◽  
Average Score ◽  
Structured Interviews ◽  
Crop Failure ◽  
Damage Risk ◽  
Planting Season

Benefits of Insurance of Rice Insurance in Eradication of Damage Risk Because of Diseases (Case Study in Sangeh Subak, Sangeh Village, Abiansemal District,Regency of Badung, Bali Province) The rat attack that occurred in July 2017 resulted in 8.96 ha of land in Subak Sangeh experiencing crop failure so farmers get a claim of Rp 53,760,000. The granting of this claim is intended to enable farmers to cover losses due to damage to the previous planting season and to have the capital of farming in the next planting season. Based on that it is interesting to do research on the benefits of rice farm insurance in tackling the risk of damage caused by pest disease in Subak Sangeh, as well as farmers response to the program.Farmers' responses were analyzed qualitatively with attitude approach based on percentage of average score obtained through structured interviews using questionnaires. While the benefits of rice farm insurance are analyzed quantitatively based on the ratio of claims fund to production cost.The result of comparison of claim fund with production cost of Subak Sangeh in one planting season is 121,54% or morethan 100%, meaning rice farm insurance has benefit in tackling damage caused by pest, farmers response is positive, seen from the attitude of farmers in general agreed to the socialization and implementation of the program.

Development of Japan’s Photovoltaic Deployment Scenarios in 2030

2017 ◽  
Vol 11 (4) ◽  
pp. 583-591 ◽  
Author(s):  
Yusuke Kishita ◽  
◽  
Yasushi Umeda
Keyword(s):  
Production Cost ◽  
Nuclear Energy ◽  
Policy Implications ◽  
Technological Advancement ◽  
Address Climate Change ◽  
Renewable Energy Technologies ◽  
Solar Power Generation ◽  
Energy Technologies ◽  
Scenario Design

There is a strong need to address climate change issues by mobilizing a variety of technologies, including renewable energy technologies. In this paper, we focus on photovoltaic (PV) technology because solar cells or PV panels are already popular in many countries, mainly incentivized by a feed-in tariff (FIT) program and low production cost. However, it is difficult to accurately predict future PV installation capacity for a region because of a variety of uncertainties, such as national energy policies and consumers’ lifestyles. Taking such uncertainties into account, this paper takes a scenario design approach to analyze future PV deployment, thereby helping to examine policy implications and offering appropriate actions. A case study of Japan’s PV deployment scenarios up to 2030 is presented here. Four distinct future situations are assumed, with particular focus on technological advancement and national share of nuclear energy. The results show that solar power generation in 2030 could account for 3.4%–7.4% of the national electricity demand.

Multi-Objective Day-Ahead Real Power Market Clearing with Voltage Dependent Load Models

2011 ◽  
Vol 12 (4) ◽  
Author(s):  
SurenderReddy Salkuti ◽  
Abhijit R Abhyankar ◽  
Pradeep R. Bijwe
Keyword(s):  
Production Cost ◽  
Cost Minimization ◽  
Power Market ◽  
Market Clearing ◽  
Real Power ◽  
Multi Objective ◽  
Load Models ◽  
Welfare Maximization ◽  
Social Welfare Maximization ◽  
Voltage Dependent

In this paper, we investigate the influence of voltage dependent load models on day ahead real power market clearing (DA-RPMC). The investigations clearly bring out the unsuitability of conventional single objectives such as production cost minimization (PCM) (or social welfare maximization (SWM)), due to reduction of load served. Hence, the multi-objective optimization is essential in this context. The paper proposes several objectives such as production cost minimization (PCM) (or social welfare maximization (SWM)), load served maximization (LSM), and Voltage Stability Enhancement Index (VSEI); which can be judiciously combined as per the needs of the operating condition. Multi-objective Strength Pareto Evolutionary Algorithm (SPEA) has been used to solve the DA-RPMC problem. The effectiveness of the proposed approach is tested on IEEE 30 bus system and the detailed simulation studies have been carried out by considering different operating conditions with voltage dependent load modeling.

scholarly journals Solutions to logistics challenges faced by fishmongers in handling and distributing processed fish. A case study of Anyanui and Keta Districts of Ghana

2020 ◽  
Vol 7 (7) ◽  
pp. 499-513
Author(s):  
Felicity Ankoma - Sey ◽  
Christabel Ewedji ◽  
Richard Gyasi Adjei ◽  
Micheal Ahiafakpor
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Experimental Testing ◽  
Maximum Height ◽  
Transport Vehicle ◽  
In Transit

The study sought simple indigenous logistics solutions to challenges faced by fishmongers with respect to the handling and distribution of processed fish in the Anyanui and Keta Districts of Ghana. It aimed at designing a handling and distribution unit (HADU) to substitute the conical frustum shaped basket (kenten), which is traditionally used for the purpose.  This was a follow-up to a research that sort to curtail identified challenges, including improper stowage, perceived overloading, listing of cargo on transport vehicle, crushing and contamination of the processed fish during transit.   Observation, simple mathematical calculations, interviews and experimental testing were employed in the study. The researchers’ considered designing a HADU with characteristics similar to the intermodal ISO container. The HADU was to be appropriate for transporting the processed fish by standard tricycles, trucks, and water crafts.  Its volume was calculated to be equivalent to that of the kenten, so as to preserve the measurements of products per unit traditionally supplied to customers, thus not complicating the pricing of contents per unit HADU for the traders.  With height 40 cm, length 43 cm and width 56 cm, the resultant cuboidal shaped HADU, had handles, corner posts with extensions and corner fitting spaces.  The HADU could be loaded in larger numbers on various sizes of trucks and tricycles compared to the kenten. It also solved the in-transit logistics challenges when stacked at a recommended maximum height of three.  Upon its acceptance by the fishmongers, the HADU’s concept was recommended to be sold to basket weavers, to try raw materials other than cane, which will lower its production cost.

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