scholarly journals Idealizam sređenoga svijeta u umjetnosti Jurja Dobrovića

Ars Adriatica ◽  
2013 ◽  
pp. 227
Author(s):  
Vinko Srhoj

In Croatian art of the second half of the twentieth century, the name of Juraj Dobrović is most frequently linked to New Tendencies, a Zagreb movement which marked progressive, experimental, and science-basedtrends which corresponded to similar tendencies of the most progressive global directions in the art of the time. Within this movement, Dobrović’s position stands out through its “ultimate ascetism” (J. Denegri), reflected in an orderly world of geometry and strict planning, unthreatened by incursions from theoutside which could disturb the ideal and idealistic structure of rationally established relationships. In other words, Dobrović incessantly establishes relationships which are generated by a rational mind unoccupied with testimonies about the outside world and its innumerable varieties. Therefore, from the very beginning, and through his forty-year career, Dobrović occupied the same position (even independently of New Tendencies) with regard to reality. He was not interested in reality as a visual appearance but only as a construct consisting of shapes which hold the world together. This represents an organized background filled with regular structures and relationships ontowhich one can graft the variegated abundance of natural forms: a potentiality which creates tree and man, rock and water, as shapes which in their many variations would not survive without their constituent particles. These particles create a grid, a rhythm, an ordered monotony, but also a system shift whichin turn generates a new order springing from the departure from the norm, and it is this which interests Dobrović, as a beginning and end of his art of the “grand scheme of things.” This scheme, however, does not contain the divine particle, the primordial spark which sprang from a single source, but is non-divine and non-human, in a way self-generating, both begunand completed within itself. In Dobrović’s work we will not find too manydifferences between two-dimensional and threedimensional solutions, between line and volume. Therefore, it is difficult to separate Dobrović’s oeuvre into painting and draughtsmanship on the one hand, and that which embodies spatial structures and relief on the other, because the final impression of both – the two-dimensional and the three-dimensional – is the same when it comes to the solution of perceived relationships. These perceived relationships, which represent Dobrović’s peculiarity, originate from aberration, mutation of forms and, finally, they create a shift or “system error” which generates a visual puzzle (it is not surprising, therefore, that T. Maroević identified him as “the Escher of the non-figural”). This makes each of his works, even the most twodimensional and linearly minimalist ones, in reality, a play with spatial possibilities, a consideration of what surprises will greet us if we introduce a change into a system of strict geometry: truncate a cube, interlace two shapes, cut an edge, open up a geometrical body, cross-hatch the lines or make a geometric outline revolve. For this reason, talking about Dobrović’spaintings means that at the same time we are alsotalking about his objects and reliefs, given that their structur al principles are the same. With regard to the international context, Dobrović’s art can be viewed and “anchored” within the movement of European relief-structure artists or European constructed relief artists (A. Dekkers, H. Böhm, H. Glattfelder). They were European artists of the late 1960s and 1970s who worked outside the mainstream trends dictated by America, and theyfocused mostly on relief sculpture. Furthermore, what is impressive about these artists is not their innovation, technical skill or monumental art but their persistent, imperturbable and strict loyalty to the simplicity and purity of the execution of artworks which seem to have been made as an exercise in ascetism. To J. Denegri, they are spiritualists rather than technicians; they are orientated towards manual and meditative matters rather than those which are technological and optical, and in this respect they represent Dobrović’s closest parallels. Indeed, the reliefs Dobrović made in this period resemble strongly the works of some of the  relief-structure artists. Therefore, this article highlights individual, specific comparisons between their works and those of Dobrović. In conclusion, it can be said that Dobrović is an artist who, in the most productive period of his career, belongs to the most prominent progressive faction of Croatian art of the 1960s and 1970s, although he refused, almost indignantly, to take part in the noisy character of art as a social event, while his artistic ideas “sprang from a gentle awe of the extent of harmony in which movement and stillness touch” (R. Putar). Dobrović is not in the least interested in the attractive effects and technical innovations used in the art of his time, when it was said that art was married to machines. Although his signature is depersonalized and “technical,” his art works speak of isolation, ascetism, self-control, sedate peace and contemplation, all of which represent human content in a world of “soulless” machines. At the same time, he never accepted the “ludic and relaxing function of art” (I. Župan), offered by some artists during the “era of the machines” in the art of the 1960s and 1970s.

Arts ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 80
Author(s):  
Steven Jacobs

Before his international breakthrough shortly before the turn of the century, Belgian painter Raoul De Keyser (1930–2012) had a long career that reaches back to the 1960s, when he was associated with Roger Raveel and the so-called Nieuwe Visie (New Vision in Dutch), Belgium’s variation on postwar figurative painting that also entails Anglo-Saxon Pop Art and French nouveau réalisme. Dealing with De Keyser’s works of the 1960s and 1970s, this article discusses the reception of American late-modernist art currents such as Color-Field Painting, Hard Edge, Pop Art, and Minimal Art in Belgium. Drawing on contemporaneous reflections (by, among others, poet and critic Roland Jooris) as well as on recently resurfaced materials from the artist’s personal archives, this essay focuses on the ways innovations associated with these American trends were appropriated by De Keyser, particularly in the production of his so-called Linen Boxes and Slices. Made between 1967 and 1971, Linen Boxes and Slices are paintings that evolved into three-dimensional objects, free-standing on the floor or leaning against the wall. Apart from situating these constructions in De Keyser’s oeuvre, this article interprets Linen Boxes and Slices as particular variations on Pop Art’s fascination for consumer items and on Minimalism’s interest in the spatial and material aspects of “specific objects”.


2021 ◽  
Author(s):  
Vanessa Dumais

Introduced by Cowles Communications and Visual Panographics in 1964, the xograph® or parallax panoramagram, was the first lenticular, autostereoscopic, photomechanical object created for the mass media. Publications such as LOOK magazine and Venture: A Traveler’s Guide frequently distributed xographs® during the 1960s and 1970s, after which time, the xograph® began to disappear from mass publications. The thesis provides a detailed account of the history of three-dimensional photographic techniques and places the xograph® within this history. It addresses the contributions and collaboration of Arthur Rothstein, Marvin Whatmore, Visual Panographics and Cowles Communications in the creation, production and dissemination of xographs®. The thesis then describes xograph® production process and the results of an electron microscopic analysis of an xograph® made to determine its physical properties . The conclusion offers suggestions for preservation guidelines for these fascinating objects.


2021 ◽  
Author(s):  
Vanessa Dumais

Introduced by Cowles Communications and Visual Panographics in 1964, the xograph® or parallax panoramagram, was the first lenticular, autostereoscopic, photomechanical object created for the mass media. Publications such as LOOK magazine and Venture: A Traveler’s Guide frequently distributed xographs® during the 1960s and 1970s, after which time, the xograph® began to disappear from mass publications. The thesis provides a detailed account of the history of three-dimensional photographic techniques and places the xograph® within this history. It addresses the contributions and collaboration of Arthur Rothstein, Marvin Whatmore, Visual Panographics and Cowles Communications in the creation, production and dissemination of xographs®. The thesis then describes xograph® production process and the results of an electron microscopic analysis of an xograph® made to determine its physical properties . The conclusion offers suggestions for preservation guidelines for these fascinating objects.


Author(s):  
H.A. Cohen ◽  
T.W. Jeng ◽  
W. Chiu

This tutorial will discuss the methodology of low dose electron diffraction and imaging of crystalline biological objects, the problems of data interpretation for two-dimensional projected density maps of glucose embedded protein crystals, the factors to be considered in combining tilt data from three-dimensional crystals, and finally, the prospects of achieving a high resolution three-dimensional density map of a biological crystal. This methodology will be illustrated using two proteins under investigation in our laboratory, the T4 DNA helix destabilizing protein gp32*I and the crotoxin complex crystal.


Author(s):  
B. Ralph ◽  
A.R. Jones

In all fields of microscopy there is an increasing interest in the quantification of microstructure. This interest may stem from a desire to establish quality control parameters or may have a more fundamental requirement involving the derivation of parameters which partially or completely define the three dimensional nature of the microstructure. This latter categorey of study may arise from an interest in the evolution of microstructure or from a desire to generate detailed property/microstructure relationships. In the more fundamental studies some convolution of two-dimensional data into the third dimension (stereological analysis) will be necessary.In some cases the two-dimensional data may be acquired relatively easily without recourse to automatic data collection and further, it may prove possible to perform the data reduction and analysis relatively easily. In such cases the only recourse to machines may well be in establishing the statistical confidence of the resultant data. Such relatively straightforward studies tend to result from acquiring data on the whole assemblage of features making up the microstructure. In this field data mode, when parameters such as phase volume fraction, mean size etc. are sought, the main case for resorting to automation is in order to perform repetitive analyses since each analysis is relatively easily performed.


Author(s):  
Yu Liu

The image obtained in a transmission electron microscope is the two-dimensional projection of a three-dimensional (3D) object. The 3D reconstruction of the object can be calculated from a series of projections by back-projection, but this algorithm assumes that the image is linearly related to a line integral of the object function. However, there are two kinds of contrast in electron microscopy, scattering and phase contrast, of which only the latter is linear with the optical density (OD) in the micrograph. Therefore the OD can be used as a measure of the projection only for thin specimens where phase contrast dominates the image. For thick specimens, where scattering contrast predominates, an exponential absorption law holds, and a logarithm of OD must be used. However, for large thicknesses, the simple exponential law might break down due to multiple and inelastic scattering.


Author(s):  
D. E. Johnson

Increased specimen penetration; the principle advantage of high voltage microscopy, is accompanied by an increased need to utilize information on three dimensional specimen structure available in the form of two dimensional projections (i.e. micrographs). We are engaged in a program to develop methods which allow the maximum use of information contained in a through tilt series of micrographs to determine three dimensional speciman structure.In general, we are dealing with structures lacking in symmetry and with projections available from only a limited span of angles (±60°). For these reasons, we must make maximum use of any prior information available about the specimen. To do this in the most efficient manner, we have concentrated on iterative, real space methods rather than Fourier methods of reconstruction. The particular iterative algorithm we have developed is given in detail in ref. 3. A block diagram of the complete reconstruction system is shown in fig. 1.


Author(s):  
A.M. Jones ◽  
A. Max Fiskin

If the tilt of a specimen can be varied either by the strategy of observing identical particles orientated randomly or by use of a eucentric goniometer stage, three dimensional reconstruction procedures are available (l). If the specimens, such as small protein aggregates, lack periodicity, direct space methods compete favorably in ease of implementation with reconstruction by the Fourier (transform) space approach (2). Regardless of method, reconstruction is possible because useful specimen thicknesses are always much less than the depth of field in an electron microscope. Thus electron images record the amount of stain in columns of the object normal to the recording plates. For single particles, practical considerations dictate that the specimen be tilted precisely about a single axis. In so doing a reconstructed image is achieved serially from two-dimensional sections which in turn are generated by a series of back-to-front lines of projection data.


Author(s):  
Douglas L. Dorset ◽  
Andrew K. Massalski

Matrix porin, the ompF gene product of E. coli, has been the object of a electron crystallographic study of its pore geometry in an attempt to understand its function as a membrane molecular sieve. Three polymorphic forms have been found for two-dimensional crystals reconstituted in phospholipid, two hexagonal forms with different lipid content and an orthorhombic form coexisting with and similar to the hexagonal form found after lipid loss. In projection these have been shown to retain the same three-fold pore triplet geometry and analyses of three-dimensional data reveal that the small hexagonal and orthorhombic polymorphs have similar structure as well as unit cell spacings.


Author(s):  
Jeffry A. Reidler ◽  
John P. Robinson

We have prepared two-dimensional (2D) crystals of tetanus toxin using procedures developed by Uzgiris and Kornberg for the directed production of 2D crystals of monoclonal antibodies at an antigen-phospholipid monolayer interface. The tetanus toxin crystals were formed using a small mole fraction of the natural receptor, GT1, incorporated into phosphatidyl choline monolayers. The crystals formed at low concentration overnight. Two dimensional crystals of this type are particularly useful for structure determination using electron microscopy and computer image refinement. Three dimensional (3D) structural information can be derived from these crystals by computer reconstruction of photographs of toxin crystals taken at different tilt angles. Such 3D reconstructions may help elucidate the mechanism of entry of the enzymatic subunit of toxins into cells, particularly since these crystals form directly on a membrane interface at similar concentrations of ganglioside GT1 to the natural cellular receptors.


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