scholarly journals Computer Generation of Birds of a Feather Puzzles

Author(s):  
Todd W. Neller ◽  
Daniel Ziegler

In this article, we describe a computer-aided design process for generating high-quality Birds of a Feather solitaire card puzzles. In each iteration, we generate puzzles via combinatorial optimization of an objective function. After solving and subjectively rating such puzzles, we compute objective puzzle features and regress our ratings onto such features to provide insight for objective function improvements. Through this iterative improvement process, we demonstrate the importance of the halfway solvability ratio in quality puzzle design. We relate our observations to recent work on tension in puzzle design, and suggest next steps for more efficient puzzle generation.

Science Scope ◽  
2017 ◽  
Vol 041 (01) ◽  
Author(s):  
Nicholas Garafolo ◽  
Nidaa Makki ◽  
Katrina Halasa ◽  
Wondimu Ahmed ◽  
Kristin Koskey ◽  
...  

2010 ◽  
Vol 166-167 ◽  
pp. 297-302 ◽  
Author(s):  
Florina Moldovan ◽  
Valer Dolga

In this article is presented a short classification for walking robots that are based on leg locomotion and the main objectives that walking robots designers must achieve. The leg configuration of the walking robot is essential for obtaining a stable motion. Computer aided design process offers certain advantages for designers who attend to realize competitive products with fewer errors and in a short term. The aim of this article is to present the graphical results of the kinematic analysis of a new type of walking mechanism designed by Dutch physicist and sculptor Theo Jansen using Pro Engineer program and SAM, in order to compare the results.


2018 ◽  
Vol 158 ◽  
pp. 01021
Author(s):  
Tamara Kostyuchenko ◽  
Nelya Indygasheva

Control moment gyroscope or two-axis balking gyroscope is used in spacecraft orientation systems. The control moment gyroscope is a complex electromechanical system with different parameters which connect by means of specific instant and inverse dependences. This fact could complicate the design process as of getting the optimal parameters the search of construction variations becomes harder. To simplify the control moment gyroscope designing process and increase its efficiency the computer-aided design system could be as highly useful. The computer-aided design system which is used in the present research and described in the article consists of five main subsystems. They cover the main stages of control moment gyroscope designing.


2005 ◽  
Vol 5 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Zahed Siddique ◽  
Karunakar Boddu

In order to provide products that can be tailored to the need of the customer, it is necessary to integrate the customer into the design process. In this paper we present a mass customization computer-aided design (CAD) framework that helps to integrate the customer into the design of user-configurable products. A template approach, which considers both modularity and scaling, is utilized to concisely represent a CAD model of the entire family. The system accepts user selections and parameters to automatically create a CAD model of the customized product in real time and then shows the model to the user. The system is implemented using PRO/ENGINEER and demonstrated through customization of bicycle frames.


Author(s):  
David Veisz ◽  
Essam Z. Namouz ◽  
Shraddha Joshi ◽  
Joshua D Summers

AbstractThis paper presents a preliminary comparison between the role of computer-aided design (CAD) and sketching in engineering through a case study of a senior design project and interviews with industry and academia. The design team consisted of four senior level mechanical engineering students each with less than 1 year of professional experience are observed while completing an industry sponsored mechanical engineering capstone design project across a 17 week semester. Factors investigated include what CAD tools are used, when in the design process they are implemented, the justification for their use from the students' perspectives, the actual knowledge gained from their use, the impact on the final designed artifact, and the contributions of any sketches generated. At each design step, comparisons are made between CAD and sketching. The students implemented CAD tools at the onset of the project, generally failing to realize gains in design efficiency or effectiveness in the early conceptual phases of the design process. As the design became more concrete, the team was able to recognize clear gains in both efficiency and effectiveness through the use of computer assisted design programs. This study is augmented by interviews with novice and experienced industry users and academic instructors to align the trends observed in the case study with industry practice and educational emphasis. A disconnect in the perceived capability of CAD tools was found between novice and experienced user groups. Opinions on the importance of sketching skills differed between novice educators and novice industry professionals, suggesting that there is a change of opinion as to the importance of sketching formed when recent graduates transition from academia to industry. The results suggest that there is a need to emphasize the importance of sketching and a deeper understanding as to the true utility of CAD tools at each stage of the design process.


Author(s):  
Raisa Yu. Ovchinnikova ◽  

The article shows that the study of design process as a special activity in graphic design is an art history problem and requires special research methods. It is scientific methodology that makes it pos-sible to achieve reliability in art history knowledge. Attention is drawn to the fact that since the 1960s the methodology of systems theory and activity theory has been a keynote for the development of the design process knowledge in various schools of graphic design. This methodology meets academic criteria and has not lost its value in our days. Based on the principles of this methodology the article analyzes different types of the graphic design process. The objective processes associated with the use of computer technologies in design appear to be the norm and the paradigm of functioning in modern graphic design. Thus, the idea of existence of numerous computer-aided design types is justified. The design objectives of diverse complexity serve here as criteria. On the basis of these objectives traditional, original, and innovative designs are out-lined and comparatively analyzed in the article. It is noted that computer technologies, first, act as an effective tool for the implementation of the forms envisioned by the designer. Second, a computer can be regarded as a creative partner, an agent. Computer technologies possess a unique set of properties and features that open up new opportunities for a creative practice in the field of graphic design. The boundaries of the design practice are changing, and new areas of collective creativity are being estab-lished. In this case the graphic design process is a process that involves efforts of many people. So, individual creativity of professional designers appears to be replaced by the collaboration of interdisci-plinary experts. It is also noted that the growth of computer-aided technologies is too fast for graphic designers to develop a theoretical understanding of them. It results in the duality of assessing the role of methodol-ogy and experience in the graphic design process. On the one hand, the use of design methodology improves efficiency of the design process in comparison with the approach based on experience. On the other hand, there occurs the “extraction” of methodology from the design practice. Research meth-ods of the graphic design process are created under the influence of not only intradisciplinary process-es but also with a view to the messages from other areas of academic knowledge. An example is the use of synergy as a special way of understanding empirical facts accumulated in various fields of aca-demic knowledge. Namely, computer-aided design reveals the non-linearity, a large variety of forms. Herewith, any calculations applied to a huge number of graphic elements change the visual result, creating a new version of the form. It is noted that the use of high-tech computer technologies is quite specific about training designers.


2012 ◽  
Vol 628 ◽  
pp. 229-239 ◽  
Author(s):  
Xi Yuan Wang ◽  
Ying Jie Li ◽  
Xiaom Wen Xu ◽  
Jian Chen Han

This paper narrates the basic principle of the computer aided design for car styling and analyzes the current status of building the high-quality surfaces in the computer aided design for car styling and “the basic process model of digital car styling” .to build “the sbasic process model based on CAS digital modeling. It points out the research content and method of the car digital model and provides theoretical basis for the research of the car styling digital model. In the conventional early design of car styling, generally the revision of design schemes consumes much time and energies. Revisions have been continuously made from the initial creative idea to the later clay model before entering into the engineering design. With the rapid development of the computer technology, the digital technology has become the leading one for the car styling development. During the design process, the digital design of car styling has evolved from the rendering into the engineering design. In order to convey the styling idea that expresses in the design sketch in a rapid and accurate way, it requires a clear expression system and based on the system, the digital model is made. Otherwise, even the good modeling technology and the high-quality surfaces become useless without clearly expressing the idea. The computer aided design for car styling is advanced, but there still exist many problems. The paper aims to put forward a rapidly modeling method of high quality car surfaces based on digital modeling and explore its feasibility during the actual application, by analyzing the current status of building the high-quality surfaces in the computer aided design for car styling and the basic process of the computer aided design for car styling and discussing problems existed during the expression of the design, as well as combining other methods of the computer aided design in other fields.


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