Painted by nature, printed by artists

This article brings the 17th-century Dutch painter Otto Marseus van Schrieck and the contemporary German artist Maximilian Prüfer into dialogue. It investigates in particular Marseus’ and Prüfer’s use of butterfly scales as materials and motifs in their works of art. Both artists developed a similar technique of butterfly imprints (lepidochromy), which consists of transferring the scales of real butterflies onto another surface. The imprints thus combine medium with representation and the object being represented. The artists used a variety of animal substances to make their artworks, some still visible, some not, and gathered living animals to depict after life or to work with in other ways. Knowledge of and interest in natural history inform the work of both artists but their reflections on human relationships with other animals and with ‘nature’ differ.

Monopulse Estimation of Unknown Polarization for Conformal Phased Array with Arbitrarily Oriented Dipoles

In this paper, a novel monopulse estimator is proposed to surmount obstacles caused by unknown polarized pattern and the difference among each dipole orientation. Polarized pattern often alters the phased array response and we could hardly recover it if we known nothing about polarized parameters. The sum and difference beamforming of conformal phased array is affected due to the difference among each dipole orientation. Therefore the conventional monopulse estimator is dumped in this circumstance. The method proposed in this paper is a remarkable estimator based on maximum likelihood methodology. In this method, polarized parameters are considered as a part of desired signal and the least-squares solution of desired signal is obtained. With the desired signal solution, the likelihood function with respect to direction is derived at first. Then from the above, Jacobian and Hessian matrix of likelihood function is deduced. The boresight is considered as the initial direction value and the estimator of desired signal direction is obtained by Newton's formula. Finally, the polarized parameters are estimated by least-squares method using the direction estimator. The root-mean-square error (RMSE) of angle estimation is acceptable when prior polarized information is completely unknown. Polarized parameters are estimated by similar technique after we find out azimuth and elevation. Our research fills a gap of monopulse estimation with arbitrary polarization and diverse dipole arrangement.

Pastoral motives in A Pitiful Comedy about Adam and Eve by J. G. Gregory

The paper examines the functioning of descriptions of the Garden of Eden in A Pitiful Comedy about Adam and Eve by Johann Gottfried Gregory, staged in 1675 at the court of Tsar Alexei Mikhailovich. The description of the paradise garden in the play under study originates from the biblical tradition and is structured according to the Lutheran canon that was well-known to the author. The Russian play on the plot of Adam and Eve shows a connection with Paradise Lost by J. Milton. Following Milton, Gregory depicts Adam as the crown of creation of pastoral harmony. However, unlike Milton, Gregory’s pastoral descriptions in the play are of an inset character. The description of harmonic nature takes on a pastoral motif when the author starts imagining a particular (royal) garden as a biblical Eden, making the biblical descriptions of the garden expressive in an idyllic way. A similar technique can be found in the works of the English playwrights of the Elizabethan era, for example, in the plays of J. Peel. In Gregory’s play, a special place is occupied by the eclogue, the elements of which can be identified in the work of Juan del Encina. When considering the relationship between the concepts of “a pastoral,” “an idyll,” “a secular pastoral,” and “an eclogue”, one can find in Gregory’s play a clear predominance of secular pastoral with elements of idyll, which is due to the court orientation of the first Russian plays written for the theater of Tsar Aleksey Mikhailovich.

System and Also Network Control using Virtual Machine Migration

Virtualization of computing information has actually been actually a more and more conventional approach lately, solely in pertinent information resource settings. This has in fact assisted in the surge of cloud computing, where information location motorists can conveniently over-subscribe their physical internet hosting servers with using virtual devices in order to enhance the roi for their resources. In a similar technique, the system locations in cloud records centres are actually also considerably over-subscribed, alongside the web hyperlinks in the crucial finishings of the system being in fact simply amongst the complete really most over-subscribed as well as crammed of all, however, furthermore being actually the most effective costly to update. This provides supplies a history on reports resource concepts, as well as the houses of the website visitor traffic that perform over them. Command trivialities for handling international efficiency within records facilities seek that gone over, coming from sending methods to migration units.

Left residuated lattices induced by lattices with a unary operation

In a previous paper, the authors defined two binary term operations in orthomodular lattices such that an orthomodular lattice can be organized by means of them into a left residuated lattice. It is a natural question if these operations serve in this way also for more general lattices than the orthomodular ones. In our present paper, we involve two conditions formulated as simple identities in two variables under which this is really the case. Hence, we obtain a variety of lattices with a unary operation which contains exactly those lattices with a unary operation which can be converted into a left residuated lattice by use of the above mentioned operations. It turns out that every lattice in this variety is in fact a bounded one and the unary operation is a complementation. Finally, we use a similar technique by using simpler terms and identities motivated by Boolean algebras.

Determining of volume coefficient of gas-saturated oils

The volumetric coefficient is widely used in various calculations related to the estimation of petroleum reserves, crude oil production, preparation and transport of oil. The existing methods of its calculation determination are mainly empirical that makes it difficult to use them in solving various tasks, primarily optimization problems. The article is devoted to the development of similar technique in the form of analytical dependence, devoid of the noted shortcomings. For this purpose, the provisions of the hole theory of the dropping liquid are used, on the basis of which a theoretically and physically justified expression acceptable for a wide range of gas-saturated oils under different conditions is obtained. The acceptability of dependence is tested on oil data from different regions of the country and near abroad. The obtained dependence makes it possible to calculate the volume coefficient at a pressure equal to the pressure of oil saturation with gas.

A hybrid pan-sharpening approach using maximum local extrema

Mixing or combining different elements for getting enhanced version, is practiced across various areas in real life. Pan-sharpening is a similar technique used in the digital world; a process to combine two images into a fused image that comprises more detailed information. Images referred herein are Panchromatic (PAN) and Multispectral (MS) images. This paper presents a pansharpening algorithm which integrates multispectral and panchromatic images to generate an improved multispectral image. This technique merges the Discrete wavelet transform (WT) and Intensity-Hue-Saturation (IHS) through separate fusing criterion for choosing an approximate and detail sub-images. Whereas the maximal local extrema are used for merging detail sub-images and finally merged high-resolution image is reconstructed through inverse transform of wavelet and IHS. The proposed fusion approach enhances the superiority of the resultant fused image is demonstrated by quality measures like CORR, RMSE, PFE, SSIM, SNR and PSNR with the help of satellite Worldview-II images. The proposed algorithm is correlated with the other fusion techniques through empirical outcomes proves the superiority of the final merged image in terms of resolutions than the others.

Reversible and Fragile Watermarking for Medical Images

A novel reversible digital watermarking technique for medical images to achieve high level of secrecy, tamper detection, and blind recovery of the original image is proposed. The technique selects some of the pixels from the host image using chaotic key for embedding a chaotically generated watermark. The rest of the pixels are converted to residues by using the Residue Number System (RNS). The chaotically selected pixels are represented by the polynomial. A primitive polynomial of degree four is chosen that divides the message polynomial and consequently the remainder is obtained. The obtained remainder is XORed with the watermark and appended along with the message. The decoder receives the appended message and divides it by the same primitive polynomial and calculates the remainder. The authenticity of watermark is done based on the remainder that is valid, if it is zero and invalid otherwise. On the other hand, residue is divided with a primitive polynomial of degree 3 and the obtained remainder is appended with residue. The secrecy of proposed system is considerably high. It will be almost impossible for the intruder to find out which pixels are watermarked and which are just residue. Moreover, the proposed system also ensures high security due to four keys used in chaotic map. Effectiveness of the scheme is validated through MATLAB simulations and comparison with a similar technique.

Improvement of Garbage Management for NAND Memory System

<p>Recent days increasing the use of flash memory device in embedded systems. Diverse qualities of NAND blaze recollections from hard circles include: a constrained square eradicate check, the inconceivability of set up refresh, and asymmetry in operation granularity. Along these lines different rubbish accumulation procedures for the NAND streak recollections have been proposed. In any case, existing rubbish accumulation procedures obstruct square wear leveling since they utilize a similar technique for both hot and icy information. In this paper, we propose effective junk accumulation and piece administration strategies to enhance piece wear leveling and trash gathering speed. Above all else, information is arranged into three sorts concurring to alteration recurrence - hot information, cool information, and warm data and distinctive sorts of information are put away in various pieces. The delete cost is figured considering information sort, and afterward junk gathering is performed for the hinders whose eradicate costs surpass the limit esteem. Furthermore, unique square records are made in RAM by information sort, and the squares are orchestrated in the request of their eradicate cost.</p>

A Bridge Too Far: Conceptual Distance and Creative Ideation

Previous research has shown changing perspectives to be important in problem finding, with viewpoint-based techniques like the 'six thinking hats' and the 'six honest serving men' improving performance (e.g. Vernon & Hocking, 2014). To date, however, evidence for similar techniques based on conceptually 'near' and 'far' cues, where conceptual distance is defined topologically in a semantic space, has shown mixed results. In a sample of 171 participants, we used two standard verbal problem scenarios together with a novel technique comprising six concepts that were either conceptually near or far from the problem scenario. Participants in the experimental group used the concepts when generating solutions; controls were given empty placeholders instead of concepts. Performance was measured for fluency, quality, originality and flexibility. Apart from flexibility, participants did worse when using concepts of either type in comparison to controls. For flexibility, a borderline boost for far concepts was observed (η2 = .03, p = .06). We conclude that the cognitive load overhead introduced by our concept-cueing technique, or any other similar technique that attempts to shape the creative process, needs to be minimised through a variety of methods before we can better determine its usefulness and, thus, the role of conceptual distance in creative problem solving.