Studies on Process Information Expression Techniques of 3D CAPP

In allusion to the status of the expression and integration technology of the three-dimensional CAPP processing information, a machining process information expression and integration method was put forward, which was process-oriented and based on the three-dimensional model of products. The machining process object was represented by the processing structure tree, and the processing information was expressed and collected in the three-dimensional situation. Finally，a prototype system was developed to illustrate the feasibility and validity of the proposed method.

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3D Simulation of Foundation Excavation in a Subway Station

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.468-471.781 ◽

2012 ◽

Vol 468-471 ◽

pp. 781-784

Author(s):

Jin Lu ◽

Xiao Fan Liao

Keyword(s):

Displacement Field ◽

Three Dimensional ◽

Deformation Field ◽

Subway Station ◽

Failure Zone ◽

Dimensional Model ◽

Three Dimensional Model ◽

The Status ◽

Practical Engineering ◽

Variation Characteristics

According to an practical construction of an subway station, the foundation excavation three dimensional model was built by FLAC3D from the need of practical engineering. The status and variation characteristics of the displacement field, deformation field and plastic failure zone were obtained. Guiding significance was provided by the simulation.

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A system for three-dimensional gaze fixation analysis using eye tracking glasses

Journal of Computational Design and Engineering ◽

10.1016/j.jcde.2017.12.007 ◽

2017 ◽

Vol 5 (4) ◽

pp. 449-457 ◽

Cited By ~ 7

Author(s):

Ryo Takahashi ◽

Hiromasa Suzuki ◽

Jouh Yeong Chew ◽

Yutaka Ohtake ◽

Yukie Nagai ◽

...

Keyword(s):

Eye Tracking ◽

Three Dimensional ◽

Prototype System ◽

Two Dimensional ◽

Dimensional Model ◽

Three Dimensional Model ◽

Heat Maps ◽

Gaze Fixation ◽

Tracking Device ◽

Two Dimensional Images

Abstract Eye tracking is a technology that has quickly become a commonplace tool for evaluating package and webpage design. In such design processes, static two-dimensional images are shown on a computer screen while a subject's gaze where he or she looks is measured via an eye tracking device. The collected gaze fixation data are then visualized and analyzed via gaze plots and heat maps. Such evaluations using two-dimensional images are often too limited to analyze gaze on three-dimensional physical objects such as products because users look at them not from a single point of view but rather from various angles. Therefore in this study we propose methods for collecting gaze fixation data for a three-dimensional model of a given product and visualizing corresponding gaze plots and heat maps also in three dimensions. To achieve our goals, we used a wearable eye-tracking device, i.e., eye-tracking glasses. Further, we implemented a prototype system to demonstrate its advantages in comparison with two-dimensional gaze fixation methods. Highlights Proposing a method for collecting gaze fixation data for a three-dimensional model of a given product. Proposing two visualization methods for three dimensional gaze data; gaze plots and heat maps. Proposed system was applied to two practical examples of hair dryer and car interior.

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Paper, Plaster, Strings: Exploratory Material Mathematical Models between the 1860s and 1930s

Perspectives on Science ◽

10.1162/posc_a_00378 ◽

2021 ◽

Vol 29 (4) ◽

pp. 436-467

Author(s):

Michael Friedman

Keyword(s):

Nineteenth Century ◽

Mathematical Models ◽

Case Studies ◽

Hyperbolic Plane ◽

Three Dimensional ◽

Decisive Role ◽

Dimensional Model ◽

Three Dimensional Model ◽

The Status ◽

String Models

Abstract Does the materiality of a three-dimensional model have an effect on how this model operates in an exploratory way, how it prompts discovery of new mathematical results? Material mathematical models were produced and used during the second half of the nineteenth century, visualizing mathematical objects, such as curves and surfaces—and these were produced from a variety of materials: paper, cardboard, plaster, strings, wood. However, the question, whether their materiality influenced the status of these models—considered as exploratory, technical, or representational—was hardly touched upon. This article aims to approach this question by investigating two case studies: Beltrami’s paper models vs. Dyck’s plaster ones of the hyperbolic plane; and Chisini’s string models of braids vs. Artin’s and Moishezon’s algebraization of these braids. These two case studies indicate that materiality might have a decisive role in how the model was taken into account mathematically: either as an exploratory or rather as a technical or pedagogical object.

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