A definition of pictorial style in terms of distinctive combinations of pictorial devices characteristic of a particular culture or period or the work of an individual artist is proposed. Four kinds of pictorial structure are described: the drawing (spatial) systems, the denotation systems, the mark systems and the attributes systems. Three pictures by Poussin, Rembrandt and the Achilles painte...

Appendicitis is a common disorder which requires careful diagnosis to avoid complications. Ultrasound is being increasingly used for diagnosis because of its ease and simplicity. In this series, a range of abnormal findings are presented, as well as useful teaching points on technique and pitfalls.

The term rhombencephalitis refers to inflammatory diseases affecting the hindbrain (brainstem and cerebellum). Rhombencephalitis has a wide variety of etiologies, including infections, autoimmune diseases, and paraneoplastic syndromes. Infection with bacteria of the genus Listeria is the most common cause of rhombencephalitis. Primary rhombencephalitis caused by infection with Listeria spp. occ...

We propose a theoretical construct coined nested pictorial structure to represent an object by parts that are recursively nested. Three innovative ideas are proposed: First, the nested pictorial structure finds a part configuration that is allowed to be deformed in geometric arrangement, while being confined to be topologically nested. Second, we define nested features which lend themselves to ...

even science whose origins and motives are tainted by sociopolitical influences can be considered "good" or "normal." (This premise is, of course, essential to accept before we are even confronted with the ethical dilemma of whether or not we should use the Nazis' data today.) The problem arises, however, not so much in the theories that are produced by such science as in the application of tho...

Surfaces play an important role in visual perception. They are perceived as ‘(perceptual) reliefs’. that are surfaces in 2 + 1D perceptual space, that is the product space of the 2D visual field and the ID ‘depth dimension’. It is in many respects irrelevant whether the observer views a true 3D scene or a flat (2D) picture of a scene. In both cases, the percepts are reliefs in 2 + ID perceptual...

BACKGROUND Warning labels on tobacco products provide an effective way of communicating the consequences of tobacco use. Research has shown that larger and colorful warnings placed on packaging are more effective for informing consumers and general public. However, primarily due to powerful lobbying by the industry, pictorial health warnings in India experienced constant delay in introduction a...

'Reverspectives' (by artist Patrick Hughes) consist of truncated pyramids with their small faces closer to the viewer, allowing realistic scenes to be painted on them. Because their pictorial perspective reverses the physical depth arrangement, reverspectives provide a bistable paradigm of two radically different, competing depth percepts, even when viewed binocularly: points that are physicall...

String diagrams were introduced by Roger Penrose as a handy notation to manipulate morphisms in a monoidal category. In principle, this graphical notation should encompass the various pictorial systems introduced in proof-theory (like Jean-Yves Girard’s proof-nets) and in concurrency theory (like Robin Milner’s bigraphs). This is not the case however, at least because string diagrams do not acc...