منابع مشابه
Situated modelling in the drawing workshop for bobbin lace.
The current article presents the process of situated modeling in the drawing workshop for bobbin lace developed and implemented in the Núcleo de Produção Artesanal Rendeiras da Vila, in Ponta Negra, Natal-Brasil. The workshop aimed to rescue the domain over the product in the production of bobbin lace through capacitation of both experienced and novice craftswomen. The modeling of the drawing w...
متن کاملDrawing Bobbin Lace Graphs, or, Fundamental Cycles for a Subclass of Periodic Graphs
In this paper, we study a class of graph drawings that arise from bobbin lace patterns. The drawings are periodic and require a combinatorial embedding with specific properties which we outline and demonstrate can be verified in linear time. In addition, a lace graph drawing has a topological requirement: it contains a set of non-contractible directed cycles which must be homotopic to (1, 0), t...
متن کاملQuasiperiodic patterns in boundary-modulated excitable waves.
We investigate the impact of domain shape on wave propagation in excitable media. Channeled domains with sinusoidal boundaries are considered. Trains of fronts generated periodically at an extreme of the channel are found to adopt a quasiperiodic spatial configuration that repeats periodically in time. The phenomenon is numerically studied in a model for a photosensitive Belousov-Zabotinsky rea...
متن کاملResonant Quasiperiodic Patterns in a Three-dimensional Lasing Medium
Starting from the Maxwell-Bloch equations for a 3D ring-cavity laser, we analyze stability of the nonlasing state and demonstrate that, at the instability threshold, the wave vectors of the critical perturbations belong to a paraboloid in the 3D space. Next, we derive a system of nonlinear evolution equations above the threshold. The nonlinearity in these equations is cubic. For certain sets of...
متن کاملThe Abstract Lace Expansion
LACES DEFINITION. Let P be a finite set of properties. A mapping l that Ž . assigns to any subset S ; P another subset l S is called a lace map if, for all S, G, S , S ; P: 1 2 Ž . Ž . i l S ; S; Ž . Ž . Ž . Ž . ii l S ; G ; S « l G s l S ; Ž . Ž . Ž . Ž . Ž . iii l S s l S « l S j S s l S . 1 2 1 2 1 Ž . Ž . Ž . A set L for which l L s L is called a lace. By applying ii to G s l S , Ž Ž .. Ž ....
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ژورنال
عنوان ژورنال: Journal of Mathematics and the Arts
سال: 2020
ISSN: 1751-3472,1751-3480
DOI: 10.1080/17513472.2020.1752999