scholarly journals Application of Selected Reverse Engineering Procedures Based on Specific Requirements

2021 ◽  
Vol 4 (1) ◽  
pp. 75-85
Author(s):  
Mária Hrčková ◽  
Pavol Koleda
Keyword(s):  
Reverse Engineering ◽  
Time Interval ◽  
Base Line ◽  
Cloud Processing ◽  
Point Cloud Processing ◽  
Starting Point ◽  
Tool Replacement ◽  
Geometric Elements ◽  
Selection Of

Abstract The paper describes a solution of reverse engineering tasks using the equipment of the laboratory of the Technical University in Zvolen. The first task was linked to evaluation of a wear rate of the tool used to for mulching and elimination of unwanted wood or weed vegetation. The obtained data will be used as a base line for determination of the time interval for the tool replacement. We developed a prototype of components and their drawing documentation for a single-purpose machine for cutting barley. We created the 3D model using the method of photogrammetry. The finished drawing documentation and prototypes were handed over to the company KRUP. Finally, we identified the most suitable procedures for creating a model of a part with a complex shape. We tested the techniques of editing the point cloud processing, as well as of smoothing the surfaces and automating the creation of partial geometric elements of the model. Based on the properties of the component, which is the starting point of the entire reverse engineering process and from the achieved results, we set recommendations for the selection of appropriate procedures.

Surface Reconstruction Based on the 3D Laser Scanner

2012 ◽  
Vol 215-216 ◽  
pp. 656-659
Author(s):  
Le Yang Chen
Keyword(s):  
Reverse Engineering ◽  
Surface Reconstruction ◽  
Point Cloud ◽  
Laser Scanning ◽  
Laser Scanner ◽  
3D Laser Scanning ◽  
Cloud Processing ◽  
Point Cloud Processing ◽  
Key Technologies ◽  
Rapid Scanning

3D laser scanning is one of the key technologies of reverse engineering. Digital point cloud is produced by the rapid scanning technology. Some technology about reverse engineering is introduced in this thesis. The curved surface can be generated by the point cloud processing, when the point cloud can be processed by the software called Geomagic Studio.

scholarly journals Application of Reverse Engineering Technology in Part Design for Shipbuilding Industry

2019 ◽  
Vol 26 (2) ◽  
pp. 126-133
Author(s):  
Mariusz Deja ◽  
Michał Dobrzyński ◽  
Marcin Rymkiewicz
Keyword(s):  
Reverse Engineering ◽  
Point Cloud ◽  
3D Model ◽  
Cad Model ◽  
Engineering Technology ◽  
Freeform Surfaces ◽  
Shipbuilding Industry ◽  
Cloud Processing ◽  
Point Cloud Processing ◽  
Cad Models

Abstract In the shipbuilding industry, it is difficult to create CAD models of existing or prototype parts, especially with many freeform surfaces. The paper presents the creation of the CAD 3D model of a shipbuilding component with the application of the reverse engineering technology. Based on the data obtained from the digitization process, the component is reconstructed in point cloud processing programs and the CAD model is created. Finally, the accuracy of the digital model is estimated.

scholarly journals Place of military tourist institutions in the tourist offer of Serbia

2018 ◽  
pp. 55-71
Author(s):  
Mihajlo Ranisavljevic
Keyword(s):  
Target Market ◽  
Competitive Advantages ◽  
Product Positioning ◽  
Great Chance ◽  
Starting Point ◽  
Target Segment ◽  
The Military ◽  
Further Development ◽  
Selection Of

On the basis of the conducted analyses, impressions and marks given by the visitors, tourist trade, geographical-traffic position and other competitive advantages, it can be concluded that the Military Tourist Institutions along with their locations have their own place in the tourist offers of Serbia. However, it can also be concluded that it is necessary to implement the study research for the purposes of any further development. It has been affirmed: that the MTI guests are mostly satisfied by their services and the relation between the price and the quality; that there have been some defaults in the area of advertisement and the presentation of the MTI services to any potential guests by the means of media and tourist agencies; that the total score of the marks regarding the additional services is very low; that there has been a decrease regarding the number of 70 guests in the relevant period, along with low accommodation occupancy rate, as well as, progressive decrease of duration of staying by all categories of hotel guests. All of this leads to a conclusion that there are new tendencies of guests and there is a need to implement new services in the tourist offer. The basic products of the Military Tourist Institutions have not been determined and have not been based on all available products in the areas of their location. Every MTI is individually presented and within its rage of capacity it can improve its available capacities and provide new tourist products, while all these Military Tourist Institutions together could be a new tourist cluster in Serbia. With the reconstruction of the existing capacities and conceptualization of any new services, under condition of applying optimal strategy on all locations, along with the application of the conducted research results and considering all the phases of target marketing (market segmentation, selection of target market, product positioning), the Military Tourist Institutions, as a recognizable brand, have a great chance regarding the development of all tourist products of Serbia. By taking into consideration the size of the problem and by determination of new tourist products and the target segment, the MTI would get a starting point and ideas that would help them get out of the long period of decadence. That would give them an opportunity to develop all the mentioned tourist products and, in that way, they would not have to worry about their future.

Point Cloud Data Acquisition Based on Reverse Engineering Technology

2012 ◽  
Vol 159 ◽  
pp. 186-190 ◽  
Author(s):  
Xian Sheng Ran ◽  
Li Lin ◽  
Han Bing Wei
Keyword(s):  
Reverse Engineering ◽  
Data Acquisition ◽  
Point Cloud ◽  
Three Dimensional ◽  
Point Cloud Data ◽  
Engineering Technology ◽  
Cloud Data ◽  
Cloud Processing ◽  
Optical Scanner ◽  
Point Cloud Processing

A reverse engineering based point cloud data acquisition method is addressed. The most critical part of reverse engineering (RE) is data acquisition of the digital model, the quality of design is determined by point cloud data acquisition, which is related to the accuracy of design. The measurement of relative position of different parts has been a difficulty of data acquisition. In this paper, the ATOS optical scanner was used as an example to illustrate the principle of three-dimensional scanner, the positioning methods and procedure of point cloud processing. A case study of point cloud data acquisition of car body was used to illustrate three-point positioning principle, which improves the accuracy of measurement compare with traditional method.

scholarly journals Effectiveness and Optimization of Harbour Tug Fleet

2018 ◽  
Vol 19 (2) ◽  
pp. 140-150
Author(s):  
Oleksandr Bondarenko ◽  
Valery Nekrasov ◽  
Oleksii Yastreba
Keyword(s):  
Low Cost ◽  
Random Variables ◽  
Weather Conditions ◽  
Time Interval ◽  
Fleet Composition ◽  
Conditional Time ◽  
Economic Indexes ◽  
One Year ◽  
Selection Of

Abstract Determination of efficiency and optimization harbour tug fleet is based on simulation of fleet work and usage for this the methods of ship dynamics and probability theory. Visiting the port transport vessels of possible types is considered as random stream of given intensity. This stream is distributed over the berths. Productivities of berths are given random variables. Random variables are also characteristics of weather conditions in the harbour basin. Tug fleet is represented by the collection of existing port tugs of different types. Work of tugs is determined by operations of approaching to ships, escorting theirs in the near-port waters, posting on the approach channels, transportation within the port waters, berthing, unberthing and going out the ship from the port with the repetition of functioning operations in reverse order. Selection of tugs to service the next arriving or departing ship is dependent from the intensity of the current weather conditions in the port and busyness of tugs in operations with other ships. Work fleet is considered on the conditional time interval of one year. In this time the efficiency of the tug fleet is defined by economic indexes of fulfilment of all towing operations and operations on maintenance tugs. Optimization of the fleet composition is carried out according to the criteria required minimum total bollard pull, low cost and high profit. Based on performed research a program for calculating the efficiency and optimization of the port towing fleet is composed. The program can be adapted to any port with whatever types of tugs.

Testing of High Strength Fabrics: Reporting Modulus, Low Strain Properties, and Ultimate Tensile Strength

2000 ◽  
Vol 29 (4) ◽  
pp. 259-272
Author(s):  
Peter E. Stevenson ◽  
Todd R. Skochdopole ◽  
L. Cassady ◽  
Dennis Pihs ◽  
Ajit D. Kelkar
Keyword(s):  
Tensile Strength ◽  
Data Analysis ◽  
Strain Measurement ◽  
Compressive Force ◽  
High Strength ◽  
Premature Failure ◽  
Knit Fabrics ◽  
Starting Point ◽  
Selection Of

Measurement of the tensile properties of high strength woven and knit fabrics, including geotextiles and geogrids traditionally make use of roller grip-type clamping systems. These grips are designed to allow a sample to be pulled in tension without applying an excessive crimping or compressive force on the specimen, thus avoiding premature failure. Roller grips, also known as capstan grips, also have the advantage of allowing the specimen to align itself with the applied force therefore loading the specimen uniformly across the width. However, since the specimen tightens itself around the grip during testing, crosshead travel cannot be used to measure specimen strain, which makes the determination of low strain properties and the selection of modulus values difficult. Two issues that must be addressed in obtaining low strain properties are how to measure sample strain and how to get an accurate and repeatable starting point for the test. This paper will explore alternate methods of gripping systems, strain measurement and data analysis with the objective of accurately measuring and reporting low strain properties of woven and knit textiles.

scholarly journals Determine the Tonality of of News Media Reports by Conceptual Analysis

2019 ◽  
Vol 09 (4) ◽  
pp. 67-79
Author(s):  
A.A. Khoroshilov ◽  
Y.D. Kozlovskaya ◽  
R.R. Mussabayev ◽  
A.M. Krassovitsky ◽  
A.A. Khoroshilov
Keyword(s):  
News Media ◽  
Time Interval ◽  
Software Complex ◽  
News Reports ◽  
Evaluation Measure ◽  
The Republic ◽  
Media Reports ◽  
Selection Of

The article describes the solution of the task of creating linguistic tools and the methodology of automatic determination of the tonality of news reports related to the quality of life of an ordinary citizen of the Republic of Kazakhstan. The approach for solving the problem was defined, software and methods of automated creation of object dictionaries and evaluation predicate dictionaries, as well as evaluation measure modifier dictionaries were developed. The experiment confirmed the correctness of the proposed methodology for assessing events covered in news reports and the operability of the software complex. This technique, with appropriate selection of event assessment objects, can be used in creating tonal portraits of specific authors on the set of their publications, as well as tonal portraits of various news aggregates on the set of events they cover in a particular time interval.

DETERMINING THE DESALINATION UNIT COMPOSITION FOR COSTAL AREAS AND SMALL ISLANDS USE ANALYTIC HIERARCHY PROCESS

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Imam Setiadi ◽  
Dinda Rita K. Hartaja
Keyword(s):  
Analytic Hierarchy Process ◽  
Energy Demand ◽  
Pairwise Comparison ◽  
Small Islands ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Comparison Research ◽  
Hierarchy Process ◽  
Selection Of

Selection of the appropriate composition desalination units can be done with a variety of method approaches, one of the method is the Analytic Hierarchy Process. In determining the desalination unit with AHP method to consider is setting a goal, an alternative criteria and pairwise comparison. Research for the determination of the exact composition of the desalination unit in order to achieve sustainable drinking water suppy in coastal areas and small islands has been conducted. The results of the study are as follows, the energy demand of 50.83%, operator costs of 26.64%, maintenance costs of 14.13% and chemical requirement 8.4%. For an alternative composition desalination unit of RO 10 m3 / day is the best alternative composition with value of 59.61%, the composition of the next alternative is RO 20 m3/ day of 30.40% and the last alternative of the desalination unit composition is RO 120 m3/ day of 09.99%.Key words : Desalination, Mukti Stage Flash Composition, AHP

Tobacco’s Appeal to the Senses and the Early Modern Smoker’s Still Life

2020 ◽  
pp. 123-150
Author(s):  
Julia Saviello
Keyword(s):  
Still Life ◽  
Sense Data ◽  
Complex Image ◽  
Starting Point ◽  
Depth Analysis ◽  
Tobacco Pipes ◽  
Five Senses ◽  
The Senses ◽  
Cut Tobacco ◽  
Selection Of

Smell and taste – of the five senses these are the two most strongly stimulated by smoking tobacco. The article presents an in-depth analysis of the reflection of both these forms of sensory perception in textual and visual sources concerning the early consumption of the herb. In a first step, tobacco’s changing reception, first as medicine and then as stimulant, is traced through the years of its increasing distribution in Europe, starting in the middle of the 16th century. As this overview reveals, at that time the still little known substance gave rise to new forms of sense perception. Following recent studies on smell and gustation, which have stressed the need to take into account the interactions between these senses, the article probes the manifold stimulation of the senses by tobacco with reference to allegorical representations and genre scenes addressing the five senses. The smoking of tobacco was thematized in both of these art forms as a means of visualizing either smell or taste. Yet, these depictions show no indication of any deliberate engagement with the exchange of sense data between mouth and nose. The question posed at the end of this paper is whether this holds true also for early smoker’s still lifes. In the so-called toebakjes or rookertjes, a subgenre of stilllife painting that, like tobacco, was still a novelty at the beginning of the 17th century, various smoking paraphernalia – such as rolled or cut tobacco, pipes and tins – are arrayed with various kinds of foods and drinks. Finally, the article addresses a selection of such smoker’s still lifes, using the toebakje by Pieter Claesz., probably the first of its kind, as a starting point and the work by Georg Flegel as a comparative example. Through their selection of objects, both offer a complex image of how tobacco engages different senses.

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