scholarly journals Design skills assessment in teaching 3D modeling

2019 ◽  
Vol 66 ◽  
pp. 01013
Author(s):  
Vladimir Lokalov ◽  
Igor Klimov
Keyword(s):  
3D Modeling ◽  
Statistical Significance ◽  
Three Dimensional ◽  
Assessment Method ◽  
Skills Assessment ◽  
Three Dimensional Modeling ◽  
Modeling Process ◽  
Special Software ◽  
Design Activities ◽  
Design Skills

The article discusses the design skills assessment method, which was developed and used to teach basics of three-dimensional modeling. This method is necessary because the creation of a virtual 3D model usually does not include the design phase as a separate phase with own specifications and design documentation and all design activities are performed in mind without any preliminary sketches. The offered method allows assessing the quality of the student's mental design operations based on the analysis of the 3D modeling process tracking. The student's activity in the 3D modeling environment was captured using special software. The obtained data allow to identify the essential parameters of the students' actions (correctness, optimality, etc.), which were used to quantify their design skills. The construct validity of the proposed method and its statistical significance of the assessment were confirmed.

THREE-DIMENSIONAL MODELING AS A SYSTEM FOR DISPLAYING TOTAL CHEMICAL SOIL POLLUTION

2021 ◽  
pp. 6-14
Author(s):  
N.P. KARPENKO ◽  
◽  
M.A. SHIRYAEVA
Keyword(s):  
Soil Contamination ◽  
Soil Pollution ◽  
3D Modeling ◽  
Catchment Area ◽  
Three Dimensional ◽  
Environmental Situation ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Total Soil ◽  
Three Dimensional Models

The method of three-dimensional model in the system of computer modeling MathCad and Autodesk 3ds Max by categories of total soil pollution is developed. A visualization block and an analytical block have been developed which are based on calculated mathematical models for analyzing and evaluating the environmental situation, risks, and environmental safety of the territory. Three-dimensional models of relief mapping of the Pekhorka river fl oodplain are constructed by integrating them with the help of a programming environment and optimized 3D modeling programs. Three-dimensional models with total soil contamination for water body sections are constructed. On the example of some sections of the catchment area of the Pekhorka river in the Balashikha region, models with soil contamination by the total ZC indicator were created. The development of 3D modeling techniques allows you to create predictive scenarios more accurately with a high degree of detail, as well as quickly approach the solution of environmental problems. Optimization of three-dimensional modeling in the fi eld of problems related to the catchment area contributes to the further operational solution of problems of rational land use and improvement of the environmental situation.

Three-Dimensional Modeling of Container Cranes

2013 ◽  
Author(s):  
Andrea Arena ◽  
Arnaldo Casalotti ◽  
Walter Lacarbonara ◽  
Matthew P. Cartmell
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Initial Conditions ◽  
Three Dimensional ◽  
Container Cranes ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Time Marching ◽  
Constrained Model ◽  
2D And 3D

This work deals with three-dimensional (3D) modeling of container cranes including the hoisting cable length commands. The proposed models allow to effectively study the 3D motion caused by the eccentricity of initial conditions or loading conditions such as those induced by wind. The container is modeled as a 3D rigid body while the hoisting cables are treated either as inextensible trusses or as linearly elastic straight, taut cables. The 3D model with inextensible cables is shown to coalesce into existing two-dimensional models under the relevant planarity constraints. Details about the treatment of the internal inextensibility constraints are discussed. Time-marching simulations are carried out to show representative 2D and 3D responses to initial conditions and commanded motion of the trolley. The main differences between the constrained model and that with the elasticity of the cables are highlighted in the framework of a few significant design scenarios.

Three-Dimensional Recognition Technology for Rare English Words

2014 ◽  
Vol 644-650 ◽  
pp. 4121-4124
Author(s):  
Qiang Chen ◽  
Li Mei Xu
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Parallel Evolution ◽  
Three Dimensional ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
3D Data ◽  
Evolution Computation ◽  
Fitting In ◽  
The Relationship

This paper mainly studies modeling and recognition of 3D English words’ images. With the development of secondary modeling, segmentation and recognition theories and the application of evolution computation in 3D modeling and recognition, this paper analyzes the issues of parameter fitting in the 3D model, multi-object scene segmentation and parts recognition aiming at the 3D data features in the English words. The 3D model is used as the primitives part to model and segment the scenes and the group parallel evolution and the relationship matching theories are introduced into the 3D modeling and recognition to deeply identify the rare English words’ images. The paper searches for a practical and efficient three-dimensional modeling and identification scheme.

scholarly journals Logistics Engineering Simulation Using Computer 3D Modeling Technology

2021 ◽  
Vol 2143 (1) ◽  
pp. 012018
Author(s):  
Dalong Liu ◽  
Yanfang Pan ◽  
Liwei Li
Keyword(s):  
3D Modeling ◽  
Three Dimensional ◽  
Target Object ◽  
Simulation Software ◽  
Functional Requirements ◽  
Logistics System ◽  
Simulation Research ◽  
Modeling Technology ◽  
Three Dimensional Modeling ◽  
Intelligent Logistics

Abstract 3D modeling technology is an important branch of interdisciplinary fields such as computer graphics, intelligent information processing, computer vision, and artificial intelligence. Through computer digitization, collecting three-dimensional data information of the target object, and then processing and simulation reproduction through computer technology, plays an important role in logistics engineering (LE). The purpose of this paper is the simulation research of LE based on computer three-dimensional modeling technology. This paper takes LE as the research object, firstly elaborates the functional and non-functional requirements of the system separately, and establishes an intelligent logistics system. This paper uses Flexsim simulation software to establish a logistics distribution simulation model. Based on the data collected in the survey, the model is parameterized. Through the data output from the simulation, the simulation data of the original logistics system and the logistics system designed in this paper are compared and analyzed. The simulation output data shows that the total number of products transported in and out of the warehouse of the original system’s 6 transport planes is 15,559, and the total number of products transported in and out of the warehouse of the 6 transport planes in the logistics system proposed in this paper is 17,144 pieces. It can be seen that this system has strong transportation efficiency in LE.

scholarly journals Agustín de Betancourt’s Optical Telegraph: Geometric Modeling and Virtual Reconstruction

2020 ◽  
Vol 10 (5) ◽  
pp. 1857 ◽  
Author(s):  
José Ignacio Rojas-Sola ◽  
Eduardo De la Morena-De la Fuente
Keyword(s):  
3D Modeling ◽  
Geometric Modeling ◽  
3D Model ◽  
18Th Century ◽  
Three Dimensional ◽  
Assembly System ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Virtual Reconstruction ◽  
History Of

This article shows the geometric modeling and virtual reconstruction of the optical telegraph by Agustín de Betancourt and Abraham Louis Breguet developed at the end of the 18th century. Autodesk Inventor Professional software has been used to obtain the three-dimensional (3D) model of this historical invention and its geometric documentation. The material for the research is available on the website of the Betancourt Project of the Canary Orotava Foundation for the History of Science. Thanks to the three-dimensional modeling performed, it has been possible to explain in detail both its operation and the assembly system of this invention in a coherent way. After carrying out its 3D modeling and functional analysis, it was discovered that the transmissions in the telegraph were not performed by hemp ropes but rather by metal chains with flat links, considerably reducing possible error. Similarly, it has also been found that the use of the gimbal joint facilitated the adaptability of the invention to geographical areas where there was a physical impediment to the alignment of telegraph stations. In addition, it was not now necessary for the telescope frames to be located parallel to the mast frame (frame of the indicator arrow) and therefore they could work in different planes.

High-Precision 3D Modeling Method Based on Terrestrial Image Sequences for Alpine-Gorge Area

2012 ◽  
Vol 182-183 ◽  
pp. 1270-1275 ◽  
Author(s):  
Bo Su ◽  
Hao Li ◽  
Ya Qin Wang ◽  
Biao Yang
Keyword(s):  
Stereo Matching ◽  
Three Dimensional ◽  
Digital Camera ◽  
Image Sequences ◽  
Three Dimensional Modeling ◽  
Modeling Process ◽  
Dimensional Modeling ◽  
Left Image ◽  
The Right ◽  
Seed Points

The traditional measurement methods cannot adapt to the arduous topography of alpine-gorge area. Aiming at the topographical features of alpine-gorge area, we will introduce a general terrestrial method of multi-baseline photogrammetry basing on digital camera here, and then the paper mainly studies the metrization method of common digital camera and matching method of the digital image sequences of alpine-gorge area. Through the metrization of common digital camera, the efficiency of terrain data collection will increase in the alpine-gorge area, and the requirements of operations on the image control and algorithm will reduce. The combination of seed points and multiple constraints in multi-baseline stereo matching will help to solve many problems, such as shading, severe distortion between the left image and the right one, and the inconformity of scale. The modeling process stated above is quite fast and highly precise, and the three-dimensional modeling experiments show that the relative accuracy can reach from 1 / 8000 to 1 / 12000.

3D Modeling and Visualization of City Drain-Pipes Network Based on ArcGIS and SketchUp

2013 ◽  
Vol 726-731 ◽  
pp. 3030-3034 ◽  
Author(s):  
Bi Sheng Wei ◽  
Hong Liang ◽  
Teng Long Wang
Keyword(s):  
3D Modeling ◽  
Three Dimensional ◽  
3D Gis ◽  
Modeling Process ◽  
Three Dimensional Display ◽  
Gis System

This paper introduces the method of 3D modeling and visualization of ArcGIS combined with SketchUp, and describes the pipeline modeling process in SketchUp. And a drain-pipes network 3D GIS system is established with the actual drain-pipes data, which can fulfill the functions of three-dimensional display of drain-pipes network, pipeline locating, roaming and other functions.

scholarly journals Planning corrective osteotomy of the femoral bone using three-dimensional modeling. Part II

2017 ◽  
Vol 5 (3) ◽  
pp. 74-79 ◽  
Author(s):  
Vladimir E. Baskov ◽  
Alexei G. Baindurashvili ◽  
Anastasia V. Filippova ◽  
Dmitry B. Barsukov ◽  
Andrey I. Krasnov ◽  
...  
Keyword(s):  
3D Modeling ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Femoral Bone ◽  
Hip Joints ◽  
Human Errors ◽  
Surgical Interventions ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Knee Joint Surgery

Introduction. Three-dimensional (3D) modeling and prototyping are increasingly being used in various branches of surgery for planning and performing surgical interventions. In orthopedics, this technology was first used in 1990 for performing knee-joint surgery. This was followed by the development of protocols for creating and applying individual patterns for navigation in the surgical interventions for various bones. Aim. The study aimed to develop a new 3D method for planning and performing corrective osteotomy of the femoral bone using an individual pattern and to identify the advantages of the proposed method in comparison with the standard method of planning and performing surgical intervention. Materials and methods. A new method for planning and performing corrective osteotomy of the femoral bone in children with various pathologies of the hip joint is presented. The outcomes of planning and performing corrective osteotomy of the femoral bone in 27 patients aged 5 to 18 years (32 hip joints) with congenital and acquired deformity of the femoral bone were analyzed. Conclusion. The use of computer 3D modeling for planning and implementing corrective interventions on the femoral bone improves the treatment results owing to an almost perfect performance accuracy achieved by the minimization of possible human errors reduction in the surgery duration; and reduction in the radiation exposure for the patient.

scholarly journals A Case Study for 3D Modeling Process Analysis based on BIM Log File

2019 ◽  
pp. 309-313
Author(s):  
Nan Zhang ◽  
Yichen Tian ◽  
Mohamed Al-Hussein
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Process Analysis ◽  
Information Modeling ◽  
Log Files ◽  
Modeling Process ◽  
Building Information ◽  
Design Activities ◽  
Log File ◽  
Construction Efficiency

Building Information Modeling (BIM) design becomes popular with the growing needs of enhancing construction efficiency. During the design process, 3D Modeling is the foundation of generating and analyzing building information. The modeling tool, Autodesk Revit, automatically creates log files, which can record all design activities. This paper investigates and analyzes the operation data from unstructured temporal Revit log files. These data were recorded when executing the general and external command to build a 3D model of a typical residential two-story building. The objectives of this analysis were to figure out the influence elements of producing a good framing model and to give some suggestions for improving modeling efficiency. In order to extract the useful specific commands, the information in the text journal file was transferred to an excel file, before reading by a data mining tool, RapidMiner. It generated a pie chart to show the repetition amount of modeling activities. Analyzing the reasons of repeating some commands frequently, this paper contributes the possibility to reduce the useless repetition for building a good 3D model.

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