Ensuring the Requirements of Ergonomics in the Automated the Layout of Equipment

2019 ◽  
Vol 7 (3) ◽  
pp. 70-85
Author(s):  
Вин Тун Е ◽  
Vin Tun E ◽  
Л. Маркин ◽  
Leonid Markin
Keyword(s):  
Computer Aided Design ◽  
Geometric Modeling ◽  
Modeling Method ◽  
Point Of View ◽  
Design Solution ◽  
C Programs ◽  
Additional Information ◽  
Receptor Models ◽  
Service Areas ◽  
Assembly Operations

The article discusses the solution to the problem of automating the design of layouts of various equipment, taking into account ergonomics, by which is meant the provision of service areas. The article describes the development of methods and algorithms that provide access to installation tools and workspace during installation and maintenance of already placed equipment. The solution method is geometric modeling of both the placed objects and the installation equipment necessary for its maintenance, as well as the trajectory of its movement to the service area. Thus, both the installation equipment and the movement paths are treated as composable objects, the intersection of which with other objects is unacceptable. As a modeling method, receptor-based geometric models that discretize the allocation space were used. The choice of receptor models is due to the fact that the solid-state model of all the instantaneous positions of the installation tool in the process of its delivery and operation is extremely complex from a geometrical point of view. The possibility of relatively easy to determine the fact of the intersection of all objects of the scene, described by receptor models, and is the rationale for the choice in our study of the receptor method of geometric modeling. Based on the receptor design model, a procedure has been developed for determining the trajectory of a mounting tool at a given operating point, as well as the formation of the space required for operation, or establishing the fact that it is impossible to service a particular object, which indicates an unsatisfactory (non-ergonomic) given design solution. In this study a feature of using receptor models is the use of 6-digit codes in the receptor matrices, which, with some complication of the modeling method, allows to obtain additional information about problem areas in the layout under study (impossibility of carrying a tool, impossibility of performing assembly operations, etc.). Algorithms for solving this problem, as well as a graphical shell that visualizes the results of computer-aided design, are implemented as C# programs.

scholarly journals Applied Sciences to the Study of Technical Historical Heritage and/or Industrial Heritage

2020 ◽  
Vol 10 (10) ◽  
pp. 3648
Author(s):  
José Ignacio Rojas-Sola
Keyword(s):  
Applied Sciences ◽  
Computer Aided Design ◽  
Geometric Modeling ◽  
Point Of View ◽  
Global Perspective ◽  
Industrial Heritage ◽  
Computer Aided ◽  
Global Vision ◽  
Historical Heritage ◽  
Aided Design

Technical historical heritage and/or industrial heritage are manifestations of heritage that acquire greater relevance every day, since their study and analysis provide a global vision of their impact on the development of the societies and, also, because they favor the understanding of the technological evolution of these societies. The fields of action are very broad, both from the point of view of engineering and its different disciplines as well as from architecture. This Special Issue shows the reader some of the tools currently available to value this heritage and promote its dissemination, such as geometric modeling, computer-aided design, computer-aided engineering, and the study of industrial heritage from a global perspective.

scholarly journals Edge Models with the CAD Software: Creating a New Context for Mathematics in Elementary School

2021 ◽  
Author(s):  
Felicitas Pielsticker ◽  
Ingo Witzke ◽  
Amelie Vogler
Keyword(s):  
Elementary Schools ◽  
Digital Media ◽  
Computer Aided Design ◽  
Subjective Experience ◽  
Fourth Graders ◽  
Point Of View ◽  
Toulmin Model ◽  
Geometric Objects ◽  
Design Software ◽  
Aided Design

AbstractDigital media have become increasingly important in recent years and can offer new possibilities for mathematics education in elementary schools. From our point of view, geometry and geometric objects seem to be suitable for the use of computer-aided design software in mathematics classes. Based on the example of Tinkercad, the use of CAD software — a new and challenging context in elementary schools — is discussed within the approach of domains of subjective experience and the Toulmin model. An empirical study examined the influence of Tinkercad on fourth-graders’ development of a model of a geometric solid and related reasoning processes in mathematics classes.

scholarly journals Advances in Engineering Graphics: Improvements and New Proposals

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 827
Author(s):  
José Ignacio Rojas-Sola
Keyword(s):  
Computer Animation ◽  
Computer Aided Design ◽  
Geometric Modeling ◽  
Correct Interpretation ◽  
Special Issue ◽  
Engineering Graphics ◽  
Communication Techniques ◽  
Graphic Communication ◽  
Graphic Language ◽  
Aided Design

The study of graphic communication techniques that engineers, architects, and designers use to express ideas and concepts, or the graphic expression applied to the design process, is becoming increasingly important. The correct interpretation of graphic language allows the development of skills in the training of an engineer or architect. For this reason, research on this topic is especially valuable in finding improvements or new proposals that help toward a better understanding of those techniques. This Special Issue shows the reader some examples of different disciplines available, such as engineering graphics, industrial design, geometric modeling, computer-aided design, descriptive geometry, architectural graphics and computer animation.

scholarly journals Characterisation of the Filler Fraction in CAD/CAM Resin-Based Composites

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1986
Author(s):  
Andreas Koenig ◽  
Julius Schmidtke ◽  
Leonie Schmohl ◽  
Sibylle Schneider-Feyrer ◽  
Martin Rosentritt ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Point Of View ◽  
Specific Information ◽  
Dental Resin ◽  
X Ray ◽  
Computer Aided ◽  
Cad Cam ◽  
Filler Fraction ◽  
The Individual ◽  
Aided Design

The performance of dental resin-based composites (RBCs) heavily depends on the characteristic properties of the individual filler fraction. As specific information regarding the properties of the filler fraction is often missing, the current study aims to characterize the filler fractions of several contemporary computer-aided design/computer-aided manufacturing (CAD/CAM) RBCs from a material science point of view. The filler fractions of seven commercially available CAD/CAM RBCs featuring different translucency variants were analysed using Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Micro-X-ray Computed Tomography (µXCT), Thermogravimetric Analysis (TG) and X-ray Diffractometry (XRD). All CAD/CAM RBCs investigated included midifill hybrid type filler fractions, and the size of the individual particles was clearly larger than the individual specifications of the manufacturer. The fillers in Shofu Block HC featured a sphericity of ≈0.8, while it was <0.7 in all other RBCs. All RBCs featured only X-ray amorphous phases. However, in Lava Ultimate, zircon crystals with low crystallinity were detected. In some CAD/CAM RBCs, inhomogeneities (X-ray opaque fillers or pores) with a size <80 µm were identified, but the effects were minor in relation to the total volume (<0.01 vol.%). The characteristic parameters of the filler fraction in RBCs are essential for the interpretation of the individual material’s mechanical and optical properties.

Recognising Psychiatric Symptoms

1993 ◽  
Vol 163 (3) ◽  
pp. 308-314 ◽  
Author(s):  
G. E. Berrios ◽  
E. Y. H. Chen
Keyword(s):  
Psychiatric Symptoms ◽  
Cognitive Styles ◽  
Point Of View ◽  
Stage Model ◽  
Diagnostic Systems ◽  
Contextual Cues ◽  
Additional Information ◽  
Neural Network Simulation ◽  
Symptom Recognition ◽  
Diagnostic Hypothesis

Current overemphasis on nosological diagnosis has led to a neglect of the process of symptom recognition. There is evidence, however, that the perception of the symptom alone does not guarantee symptom ascertainment since a decision-making component is also involved. To achieve the latter, additional information must be provided by the contextual cues implicit in the ongoing diagnostic hypothesis. Current diagnostic systems, however, still assume a two-stage model according to which symptom and disease recognition are independent cognitive events. This paper suggests that this model is inadequate and that descriptive psychopathology is nottransparent. It then describes a neural network simulation to make various aspects of the problem explicit. This takes into account the multidimensional and probabilistic aspects of symptom recognition and is, from this point of view, superior to traditional algorithmic models. It also has the capacity to represent the different cognitive styles involved in symptom recognition.

Geometric Modeling of Ceramics Dendrites to Modulate Energy and Material Flows by Using Stereolithography

2014 ◽  
Vol 783-786 ◽  
pp. 2439-2444 ◽  
Author(s):  
Soshu Kirihara
Keyword(s):  
Computer Aided Design ◽  
Geometric Modeling ◽  
Lattice Structure ◽  
Photonic Band Gap ◽  
Ultra Violet ◽  
Terahertz Time Domain Spectroscopy ◽  
Cross Sectional ◽  
Air Atmosphere ◽  
Micro Patterning ◽  
Micro Pattern

Through computer aided design, manufacturing and evaluation, various ceramics dendrites with spatially ordered micro cavities were successfully fabricated by utilizing stereolithography. Micrometer order ceramic lattices were propagated spatially in computer graphic space. Ceramics nanoparticles were dispersed in to photo sensitive liquid resins to obtain thixotropic slurries. The paste material was spread on a grass substrate by using a mechanical knife edge, and an ultra violet micro pattern was exposed to create cross sectional solid layer. After the layer stacking process, the obtained composite precursor was dewaxed and sintered in an air atmosphere. By the micro patterning stereolithography, solid electrolyte dendrites of yttria stabilized zirconia with spatially ordered porous structures were fabricated for fuel cell miniaturizations. Gaseous fluid profiles and pressure distributions in the formed ceramic lattices with various porosity percent were visualized and analyzed by a finite element method. Subsequently, alumina micro photonic crystals with a diamond lattice structure were fabricated. Electromagnetic wave properties were measured by using a terahertz time domain spectroscopy. A complete photonic band gap was exhibited, and a localized mode to select the wavelength was obtained by introducing a defect cavity.

scholarly journals Virtual Object Position Manipulation Using ARToolKit

2015 ◽  
Vol 1 (2) ◽  
pp. 306
Author(s):  
Hoger Mahmud Hussen
Keyword(s):  
Augmented Reality ◽  
Target Position ◽  
Virtual Object ◽  
Design Solution ◽  
Test Cases ◽  
Current Version ◽  
Virtual Objects ◽  
Additional Information ◽  
Education And Health ◽  
Optical Markers

In this paper the outcome of a project is presented that aims to modify and improve one of the most widely used Augmented Reality tools. Augmented reality (AR), is a fast growing area of virtual reality research. Augmented Reality (AR) is a newly emerging technology by which user’s view of the real world is augmented with additional information from a computer model. ARToolKit is one of the most widely used toolkits for Augmented Reality applications. The toolkit tracks optical markers and overlays virtual objects on the markers. In the current version of the toolkit the overlaid object is stationary or loops regardless of the optical target position, this means that the overlaid object cannot be animated or changed based on the movement of the optical target. The aim is to improve the toolkit, therefore a design solution to modify it were designed and implement so that users can manipulate the position of the overlaid virtual object, through movements of the optical target. The design solution focuses on developing a mathematically based links between the position of the optical target and the overlaid virtual object. To test the solution test cases were developed and the results show that the design solution is effective and the principal idea can be used to develop many applications in different sectors such as education and health.

scholarly journals Polish-Ukrainian song “Hej, sokoły!” (“Hey, Eagles!”) as an intercultural communicative phenomenon

2020 ◽  
Vol 11 (1) ◽  
pp. 231-240
Author(s):  
Nadiya Balandina ◽  
Alla Bolotnikova
Keyword(s):  
Linear Model ◽  
Modeling Method ◽  
Point Of View ◽  
Social Aspects ◽  
External Context ◽  
Polish Version ◽  
The Subject

The subject of the study is the Polish version of the song “Hej, sokoły!” regarded as a multi-dimensional intercultural communicative phenomenon from the point of view of the external and internal contexts and correlations of its individual and social aspects. The analysis has been undertaken using the method of sociocultural interpretation of the external context, the method of information decoding for identifying the author’s intentions and functions of textual symbols. For the systemic and incremental study of the song the author uses the modeling method, in particular, the linear model of communication with considering the constituents: w h o – w h a t – b y w h a t m e a n s – t o w h om. In the framework of this model the article has studied the motives of writing the song, its genre peculiarities. The ways of verbalizing its semantic dominants and the addressee of the song have been determined. The conclusion states that “Hej, sokoły!” is not just a romantic ballad tinged with grief for the lost, but a certain intercultural Ukrainian-Polish phenomenon that teaches not to forget history and given a lesson in patriotism.

Effects of Immersion on Virtual Reality Prototype Design Reviews of Mechanical Assemblies

2018 ◽  
Author(s):  
Luis de Casenave ◽  
José E. Lugo
Keyword(s):  
Computer Aided Design ◽  
Virtual Prototype ◽  
Point Of View ◽  
Human Computer Interface ◽  
Design Decisions ◽  
Mechanical Assemblies ◽  
Accurate Design ◽  
Virtual Prototypes ◽  
Aided Design ◽  
Prototype Design

The proficiency of Computer Aided Design (CAD) to save, communicate and render realistic virtual prototypes allows for easier communication and review of proposed design decisions via design reviews. However, the use of virtual prototypes is limited by the realism of the human computer interface. This paper builds on previous research investigating if increasing the realism of input and output interactions between subjects and virtual prototypes will affect user’s ability to analyze an assembly for errors. For this end, two experiments were conducted which asked participants to perform design reviews on assembly models and identify errors in the assembly. The first experiment tested virtual prototype output display factors through subject point of view movement and virtual prototype rotation. The second experiment tested human input factors using different controller setups. It is expected the more realistic virtual prototype rendering and controller input experience will result in more accurate design reviews.

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