scholarly journals A Fast Algorithm to Generate Feasible Solution of Production Facilities Layout Based on Plane Segmentation

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Shi-wang Hou ◽  
Zhibin Li ◽  
Hui Wang
Keyword(s):  
Feasible Solution ◽  
Facility Layout ◽  
Optimal Arrangement ◽  
Facilities Planning ◽  
Facilities Layout ◽  
Lower Left Corner ◽  
Arbitrary Space ◽  
Left Corner ◽  
Continuous Block ◽  
The Given

For facility layout problem with continuous block and unequal area, it is key to generate feasible solution of facility layout with arbitrary space form in order to find the optimal arrangement scheme under a given goal. According to the given slicing position and slicing mode, the plane for arrangement was divided into many block areas by use of plane segmentation, which was consistent with the facilities in number. The precise coordinates of the lower-left corner and the top-right corner of each facility were calculated in light of its area, width, and length. The corresponding algorithm was designed in the form of pseudocode. The procedure proposed can provide a feasible facility layout solution. The running results of facilities layout instance containing 14 facilities show that the scheme can output facilities plane layout scheme quickly and provide decision support for the facilities planning.

Facility Layout Planning

2013 ◽  
pp. 212-223
Author(s):  
Hossein Hojabri ◽  
Elnaz Miandoabchi
Keyword(s):  
Mathematical Models ◽  
Planar Graph ◽  
Facility Layout ◽  
Layout Design ◽  
Simple Graph ◽  
Layout Planning ◽  
Adjacency Graph ◽  
Manufacturing Plants ◽  
Maximal Planar Graph ◽  
Facilities Layout

The weighted maximal planar graph (WMPG) appears in many applications. It is currently used to design facilities layout in manufacturing plants. Given an edge-weighted complete simple graph G, the WMPG involves finding a sub-graph of G that is planar in the sense that it could be embedded on the plane such that none of its edges intersect, and is maximal in the sense that no more edges can be added to it unless its planarity is violated. Finally, it is optimal in the sense that the resulting maximal planar graph holds the maximum sum of edge weights. In this chapter, the aim is to explain the application of planarity in facility layout design. The mathematical models and the algorithms developed for the problem so far are explained. In the meanwhile, the corollaries and theorems needed to explain the algorithms and models are briefly given. In the last part, an explanation on how to draw block layout from the adjacency graph is given.

scholarly journals APPLICATION OF AUGMENTED REALITY TOOLS TO THE DESIGN PREPARATION OF PRODUCTION

2021 ◽  
Vol 2021 (2) ◽  
pp. 4428-4433
Author(s):  
PETR BARON ◽  
◽  
MAREK KOCISKO ◽  
EDUARD FRANAS ◽  
◽  
...  
Keyword(s):  
Augmented Reality ◽  
Mobile Phone ◽  
Mobile Devices ◽  
Design Stage ◽  
Basic Information ◽  
Marker Tracking ◽  
Lower Left Corner ◽  
Left Corner ◽  
Intelligent Tools ◽  
Production Preparation

The paper describes the application of augmented reality tools to create an auxiliary interactive tool in the field of design. To mediate it, an application with AR operation based on marker tracking has been designed. The created application works with the mobile devices platform. Two types of markers have been used in the application. To display basic information, buttons with functions are added to the scene, such as part information, rotation and change of position in the X, Y, Z direction. The application runs on a mobile phone, with a built-in camera. The marker is displayed in the drawing's lower left corner. The model is positioned so that it appears above the view of the part in the drawing. The task of the application is to support intelligent tools applicable in the design stage of production preparation, in the creation of drawing documentation.

scholarly journals Monarch Butterfly Optimization for Facility Layout Design Based on a Single Loop Material Handling Path

Mathematics ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 154 ◽  
Author(s):  
Minhee Kim ◽  
Junjae Chae
Keyword(s):  
Material Flow ◽  
Material Handling ◽  
Facility Layout ◽  
Monarch Butterfly ◽  
Layout Design ◽  
Monarch Butterfly Optimization ◽  
Single Loop ◽  
Handling Cost ◽  
Material Handling Cost ◽  
The Given

Facility layout problems (FLPs) are concerned with the non-overlapping arrangement of facilities. The objective of many FLP-based studies is to minimize the total material handling cost between facilities, which are considered as rectangular blocks of given space. However, it is important to integrate a layout design associated with continual material flow when the system uses circulating material handling equipment. The present study proposes approaches to solve the layout design and shortest single loop material handling path. Monarch butterfly optimization (MBO), a recently-announced meta-heuristic algorithm, is applied to determine the layout configuration. A loop construction method is proposed to construct a single loop material handling path for the given layout in every MBO iteration. A slicing tree structure (STS) is used to represent the layout configuration in solution form. A total of 11 instances are tested to evaluate the algorithm’s performance. The proposed approach generates solutions as intended within a reasonable amount of time.

Ventilation of Square Cavity Containing a Heat Source

2021 ◽  
Vol 406 ◽  
pp. 149-163
Author(s):  
Djelloul Chati ◽  
Said Bouabdallah ◽  
Badia Ghernaout
Keyword(s):  
Heat Source ◽  
Mixed Convection ◽  
Governing Equations ◽  
Square Cavity ◽  
Numerical Resolution ◽  
Ventilated Cavity ◽  
Lower Left Corner ◽  
Left Corner ◽  
Volume Method ◽  
Cavity Effect

A numerical simulation of turbulent mixed convection of a ventilated cavity containing a heat source placed of the center has been carried out. This cavity is outfitted along couple holes: one placed within the lower left corner and the other in the top right corner. The width of the hole "H" represents is 1/5 of the length of the cavity side. The diameter regarding the round heat source "D" is equal in accordance with the breadth of the inlet gap’s H (D = H). The walls of the cavity considered are maintained adiabatic, while the temperature of the heat source T is higher than the ambient temperature. The turbulence model k-ε was used for governing equations of turbulent mixed convection inside the cavity. The finite volume method was used for numerical resolution. The parameters of flow are: the Grashof number is set to Gr = 109 and the Reynolds number (Re) varies so that the number of Richardson (Ri) takes the values Ri = 0.01, 0.05, 0.1, 1, 2, 5, 10, 20 and 30 (Ri = Gr/ Re2). The effect of thermo-dynamic parameters and the shape geometric cavity effect are investigated.

Restaurarea unei picturi pe pânză de Aurél Náray (1883–1948)

2020 ◽  
Vol 34 ◽  
pp. 317-330
Author(s):  
Dana Benkara
Keyword(s):  
Small Area ◽  
Oil Content ◽  
Paint Layer ◽  
Lower Edge ◽  
Oil Painting ◽  
Varnish Layer ◽  
Lower Left Corner ◽  
The Face ◽  
Restoration Work ◽  
Left Corner

"The restoration of a painted canvas by Aurél Náray (1883-1948) This study shows the restoration work made on the painted canvas of the Hungarian artist Aurél Náray (1883-1948), depicting an ecclesiastic subject (Saint Joseph with the infant Jesus). This oil painting comes from a private art collector and has the following dimensions: 42x57.5 cm, being sustained by a wooden stretcher. The painting is signed and dated by the artist himself on the lower left corner (“Aurél Náray 909”). The canvas is fixed on the underframe with metallic nails; as a result of the wood having dried, the frame shows slight distortions. The face of the painting displays small portions of missing white primer and/ or colour, erosions of the paint layer, two little punctures in the canvas, and a small area of distorted canvas placed toward the lower edge of the painting. Adherence of thin dirt can be observed on the surface of the painting while the back of the canvas bears heavy traces of dust and dirt, especially on its margins. The actual restoration process of the painted canvas referred to the following: drawing up the initial photograhic documentation, superficial dust cleaning on the back of the canvas, detachment of the painting from its old underframe and the building of a new and proper wooden stretcher. After the plainness of the painting was restored and the two small pricked points on the canvas were consolidated (with the use of Beva 371 adhesive), a strip lining on the margins of the canvas was carried out, in order to be able to fix the canvas on the new underframe. Cleaning of the surface came next, followed by the filling of the missing primer layer with putty. The chromatic integration of the painting was accomplished (after having sealed the original paint with a thin layer of intermediary varnish) with the use of low oil content colours and the final protection of a second satin varnish layer. Keywords: painted canvas, restoration, stretcher, strip lining, varnish "

Application of SLP Method in Rubber Powder Workshop

2012 ◽  
Vol 217-219 ◽  
pp. 612-616
Author(s):  
Jing Shun Fu ◽  
Zhong Min Gao
Keyword(s):  
Unit Area ◽  
Actual Situation ◽  
Mutual Relationship ◽  
Optimal Arrangement ◽  
Layout Planning ◽  
Facilities Layout ◽  
Weighted Factor ◽  
The Relationship ◽  
Operating Unit ◽  
System Layout

In this article, system layout planning (SLP) method analyzes the relationship between the refined rubber workshop logistics and the mutual relationship between logistic, draw up the position related figure of operating unit and relevant figure of operating unit area. According to the actual situation of the rubber factory, it determines three sets of optimizing distribution schemes, and uses the weighted factor method to evaluate the schemes, so as to determine the optimal arrangement scheme, each operating unit facilities layout planning unit has its guiding significance.

Study on Public Sports Facility Layout Planning

2013 ◽  
Vol 440 ◽  
pp. 397-401
Author(s):  
Tie Huan Sun
Keyword(s):  
Urban Space ◽  
Urban System ◽  
Sports Facilities ◽  
Layout Planning ◽  
Facilities Planning ◽  
Facilities Layout ◽  
Planning Models ◽  
Construction Experience ◽  
Space Layout

Public sports facilities are to ensure the quality of urban residents life, and are the carrier of the national fitness plan, and is the basis to improve the physical quality. Reasonable public sports facilities planning layout, can promote the improvement of the urban space layout structure, and realize the self-optimization and benign development of urban system. In this paper, the urban public sports facilities layout plans as the research key, analysis of various urban public sports facilities layout planning factors. Combined with planning, construction experience, discusses sports facilities layout planning models and planning layout methods.

scholarly journals Cutting Path Optimization Using Tabu Search

2011 ◽  
Vol 473 ◽  
pp. 739-748 ◽  
Author(s):  
Reginald Dewil ◽  
Pieter Vansteenwegen ◽  
Dirk Cattrysse
Keyword(s):  
Tabu Search ◽  
Software Package ◽  
Feasible Solution ◽  
Test Cases ◽  
Finish Cutting ◽  
Initial Feasible Solution ◽  
Commercial Software Package ◽  
Cutter Head ◽  
Cutting Path ◽  
The Given

This paper deals with generating paths for cutting irregular parts nested on a metal sheet. The objective is to minimize the total non-cutting time for the cutter head starting at a known location, cutting all the required elements and returning to the known location. In contrast to most literature on this topic, a part does not have to be cut at once. If this reduces the total non-cutting time, it is possible to cut a number of elements on a given part, then cut other parts and then return later to finish cutting the given part. The problem is modeled as a generalized traveling salesperson problem with special precedence constraints. An initial feasible solution is generated and improved by local moves embedded in a tabu search framework. The proposed algorithm shows promising results in comparison with a commercial software package on a limited set of test cases.

scholarly journals Designing Smart Student Savings Tools Based on Arduino and Web

2020 ◽  
Vol 8 (03) ◽  
pp. 73-89
Author(s):  
Sigit Pardjono ◽  
Asep Juarna
Keyword(s):  
Radio Frequency Identification ◽  
Color Sensor ◽  
Dc Motors ◽  
Electronic Transactions ◽  
Lower Left Corner ◽  
Frequency Identification ◽  
Storage Area ◽  
Left Corner ◽  
Financial Balance ◽  
Modern Era

In this modern era, everything is done easily, from electronic equipment to electronic transactions is developed increasingly sophisticated. The equipment and sophisticated electronic transactions turned out to have major problems that could result in dissipation, especially students in schools. The purpose of this study is to create and design a smart savings machine tool, where this machine will be controlled via RFID and a sensor with a microcontroller, so that each individual can learn to economize in managing finances. This machine is designed by adding a color sensor for depositing and withdrawing cash with only three nominal banknotes, namely Rp. 10,000, Rp. 5,000 and Rp. 2,000. Furthermore, this device is also able to calculate the financial balance that has been entered. As an input, Arduino Mega 2560 is needed for data processing. Whereas, the color sensor output is used to read the basic colors red, green and blue on the surface of the lower left corner of the rupiah banknotes. This tool works as desired, can read RFID (Radio Frequency Identification) cards that have been determined and the color sensor can respond to colors on a nominal bill of Rp 2,000, Rp.5,000 or Rp. 10,000 and able to detect the time when saving and accumulating the balance. To attract money into the storage area, two DC motors are used. When the TCS230 color sensor detects money, there are several times that the currency is unreadable due to the influence of external light which causes the sensor to be inaccurate in reading the frequency value of the money color.

Floristic Composition in Chronosequence in Atlantic Rainforest Fragments

2019 ◽  
pp. 1-13
Author(s):  
Andréa V. F. Pinto ◽  
Maria A. M. Silva ◽  
Maria J. H. Leite ◽  
Girlânio H. Silva ◽  
Ana V. L. Leite ◽  
...  
Keyword(s):  
Floristic Composition ◽  
Ground Level ◽  
Atlantic Rainforest ◽  
Secondary Forests ◽  
Mature Forest ◽  
Lower Left Corner ◽  
Left Corner ◽  
Tropical Landscapes ◽  
Young Forests ◽  
Growth Habits

Secondary forests play an important role in tropical landscapes and have important ecological functions such as the ability to accumulate biomass. Although the literature points to the convergence between primary and secondary forests, however there are few studies in Atlantic Rainforest in a chronosequence to show it. This study aimed to characterize the changes of floristic composition in a chronosequence (5, 16, 24, 30 years of regeneration and mature forest) in the Atlantic Rainforest. In each forest 30 plots of 10 × 10 m were installed for canopy sampling, and within these 100 m2 were installed plots of 5 × 5 m for sampling the woody sub-forest at the lower left corner. The growth habits analyzed were arboreal (diameter at breast height, DBH ≥ 5 cm), shrubs (DBH < 5 cm and stem diameter at ground level > 1 cm), herbs, epiphytes and climbing plants. The results suggest that from 16 young forests tended to converge with the mature forest in terms of the proportion of growth forms.

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