A Fuzzy Approach to the Role of Symmetry in Shape Formation: The Illusion of the Scalene Triangle

Author(s):  
Baingio Pinna ◽  
Marco E. Tabacchi
2020 ◽  
Vol 21 (2) ◽  
pp. 31-38
Author(s):  
Anjum Fatima Shah ◽  
Kamaljeet Sandhu
Keyword(s):  

Author(s):  
Simona Hašková ◽  
◽  
Jakub Horák ◽  

Qualitative and quantitative approaches to multicriteria evaluation and managerial decision- making often ignore the specifics of the role of the human factor. This article summarizes management methods that reflect not only numerical inputs but also data of a qualitative nature while considering their applicability in the tourism sector. Some of them can be assorted within the classes of Artificial intelligence. The focus is on the fuzzy approach at the theoretical and application level. The fuzzy approach is used to evaluate the degree of country travel and tourism competitiveness of selected European and Asian countries based on subjective rankings from the viewpoint of travelling persons. The results indicate that among countries under review, China is ranked as a highly competitive country in travel & tourism. Conditional competitive countries in terms of travel & tourism are the Czech Republic, Pakistan, Russia, and Turkey.


2021 ◽  
Vol 67 (2) ◽  
pp. 1979-1996
Author(s):  
Yaser Hafeez ◽  
Sadia Ali ◽  
Nz Jhanjhi ◽  
Mamoona Humayun ◽  
Anand Nayyar ◽  
...  

2018 ◽  
Vol 115 (49) ◽  
pp. 12359-12364 ◽  
Author(s):  
Changjin Huang ◽  
Zilu Wang ◽  
David Quinn ◽  
Subra Suresh ◽  
K. Jimmy Hsia

Morphogenesis is a phenomenon by which a wide variety of functional organs are formed in biological systems. In plants, morphogenesis is primarily driven by differential growth of tissues. Much effort has been devoted to identifying the role of genetic and biomolecular pathways in regulating cell division and cell expansion and in influencing shape formation in plant organs. However, general principles dictating how differential growth controls the formation of complex 3D shapes in plant leaves and flower petals remain largely unknown. Through quantitative measurements on live plant organs and detailed finite-element simulations, we show how the morphology of a growing leaf is determined by both the maximum value and the spatial distribution of growth strain. With this understanding, we develop a broad scientific framework for a morphological phase diagram that is capable of rationalizing four configurations commonly found in plant organs: twisting, helical twisting, saddle bending, and edge waving. We demonstrate the robustness of these findings and analyses by recourse to synthetic reproduction of all four configurations using controlled polymerization of a hydrogel. Our study points to potential approaches to innovative geometrical design and actuation in such applications as building architecture, soft robotics and flexible electronics.


2020 ◽  
Vol 10 (1) ◽  
pp. 54
Author(s):  
Baingio Pinna ◽  
Livio Conti

In this work, we discussed and counter-commented van der Helm’s comments on our previous paper (Pinna and Conti, Brain Sci., 2019, 9, 149), where we demonstrated unique and relevant visual properties imparted by contrast polarity in eliciting amodal completion. The main question we addressed was: “What is the role of shape formation and perceptual organization in inducing amodal completion?” To answer this question, novel stimuli were studied through Gestalt experimental phenomenology. The results demonstrated the domination of the contrast polarity against good continuation, T-junctions, and regularity. Moreover, the limiting conditions explored revealed a new kind of junction next to the T- and Y-junctions, respectively responsible for amodal completion and tessellation. We called them I-junctions. The results were theoretically discussed in relation to the previous approaches and in the light of the phenomenal salience imparted by contrast polarity. In counter-commenting van der Helm’s comments we went into detail of his critiques and rejected all of them point-by-point. We proceeded by summarizing hypotheses and discussion of the previous work, then commenting on each critique through old and new phenomena and clarifying the meaning of our previous conclusions.


2007 ◽  
Vol 69 (5) ◽  
pp. 732-743 ◽  
Author(s):  
Irene Razpurker-Apfeld ◽  
Ruth Kimchi

2010 ◽  
Vol 10 (7) ◽  
pp. 1188-1188
Author(s):  
J. Skilters ◽  
M. Tanca ◽  
B. Pinna
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document