Dual-Band Square Microstrip Patch Antenna for 4G/LTE and Wi-Fi Applications

A dual-band, Square-shaped Microstrip Patch Antenna (SMPA) with two opposite corner cuts is proposed. The presented design is suitable for 4G/LTE and Wi-Fi applications as it resonates at 2.13GHz and 2.41GHz frequencies. The FR4 substrate with co-axial feed is used for fabrication and is simulated using CST software. The simulation result provides enhanced antenna specification of return loss (-42.64&-20.13) dB, bandwidth (62.7&89) MHz and percentage bandwidth (2.94&3.69) % than the conventional antenna prototype. Furthermore, a comparative study of simulated and experimental findings is analyzed in this manuscript. Keywords: Dual-band, return Loss, Bandwidth, Percentage Bandwidth, 4G/LTE, Wi-Fi

RESTAURANTS AND TAVERNS IN SHEVCHENKO’S STORY “THE ARTIST” (FROM THE NEW COMMENTARIES)

Besides specifying or clarifying the current address of the restaurants and taverns mentioned in the story, it appeared necessary to give a minimum description of this or that eating-house as most of the relevant names and cases of comparing and contrasting some of them say little to a common reader and sometimes to a specialist as well. The study of these restaurants and taverns adds many new details to Shevchenko’s biography. Based on the information of the author’s contemporaries (mostly from the 1830s—1840s), descriptions in the fiction ot the time, as well as city guides and directories, the paper presents characteristics of St. Petersburg restaurants and confectioneries of Alexander, Delli, Dume, Klee, Saint Georges, the Roman cafes Lepri and Greco. The paper proves that Madame Jurgens’ eating-house was located not on the sixth line of Vasilyevsky Island, but the third one, near the Great Avenue, not far from the wine cellar of Ja. Vochts on the second line. It refutes the erroneous localization by M. Morenets who believed that Jurgens canteen worked in a house at the modern address 6 Buzky Lane / 7 the 6th line. In fact, there was a tavern “The Golden Anchor”, which is also visited by the characters of the story. There is evidence that allows assuming that the tavern “Berlin” mentioned in the story as one in the corner of the 6th line and Academic Lane was located at the modern address 3 6th line / 10 Academic Lane, because since the early 19th century there was a wine shop in this particular building, and not in the one at the opposite corner. When not lacking money to pay, Shevchenko and his Academy classmates had lunch mostly in Madame Jurgens’ eating-house. If they could afford it, getting paid for a portrait or something, they visited the restaurant Klee. K. Bryullov could sometimes invite them for dinner at Delli’s confectionery or Alexander’s restaurant. Shevchenko also knew some other aristocratic eating-houses and, of course, just heard of Roman cafes from others.

The Reuse of Textiles in the Roman World

In this chapter I examine evidence for the reuse of textiles in the Roman world. Two principal sources of evidence will be considered: archaeology, and the written record. Typical of the archaeological evidence are the rags from rubbish deposits at Berenike, a Roman port on the Red Sea coast of Egypt, and (at the opposite corner of the Empire) from ditches and occupation layers in the fort of Vindolanda close to Hadrian’s Wall. Survival of textiles, it need hardly be emphasized, is wholly dependent on climatic and microclimatic conditions, leading to a skewed distribution pattern across the ancient world. I suggest that the life cycle of a textile comprises six phases: manufacture, primary use, maintenance, primary reuse, secondary reuse, and discard. Romans may appear to display an ingrained ‘make-do-and-mend’ attitude, although such a mindset seems to be at variance with the consumerism which scholars have detected in some Roman contexts. The whole topic manifestly deserves closer scrutiny in the future.

Evaluation of Over Looped 2d Mesh Topology for Network on Chip

The arrangements of nodes in the network identifies the complexity of the network. To reduce the complexity, a structural arrangements of nodes has to be taken care. The mesh topology yields attraction than the other traditional topologies. Making the opposite corner nodes to communicate with less hops and avoiding the centre of the networks traffic, Over-Looped 2D Mesh Topology is proposed. For a homogeneous systems the proposed work can be deployed without altering any of the switch component compositions. By making the flits, travel in the outer corner nodes with the help of looping nodes will make the journey from source to destination with less hops. For smaller network below 4x4 the looping is less responsive. For odd or even number of columns and rows the looping can be done. The number of columns and number of rows need not to be equal. The left over nodes will be looped accordingly. The hop count of the Over-Looped 2D Mesh Topology compared to 2D mesh decreases the journey by 25%. The wiring segmentation and the wiring length of the system more than 10 % from 2D mesh and less than 20% from 2D Torus

Mathematical Lens: How Many Chips off the Old Block?

The sculpture entitled Four-Sided Pyramid by Sol LeWitt (1928-2007) is located in the National Gallery of Art Sculpture Garden on the National Mall in Washington, D.C. Installed in 1999, the sculpture takes on a different appearance depending on light conditions and the location of the sun. The square pyramid consists of rectangular blocks stacked twenty-four levels high. It comprises twenty-three vertical slices of blocks from the front to the back of the pyramid and forty-seven rows of blocks from one corner of the base to the opposite corner. The blocks are rectangular prisms of dimensions 1 × 1 × 2 units; thus, each block can be thought of as consisting of two cubes.

Too Much of a Good Thing: Crises of Glut in the Faroe Islands and Dominica

The question to which this essay is addressed struck me when, having done ethnographic field work in the Faroe Islands, I undertook another stint on Dominica, at the opposite corner of the North Atlantic.1 In the Faroes, I took part in a couple of slaughters of herds of pilot whales. The grindadráp is dramatic, but apart from the inevitable tumult of the slaughter itself, in which romantically inclined observers have been pleased (or horrified) to find Faroese acting like their Viking ancestors, it is a remarkably orderly business. In a Dominican village called Casse, I took part in another great sea hunt, in which shoals of skipjack tuna were caught inshore. Seining bonik, as these fish are called in the French Creole vernacular, is no less dramatic than the grindadráp, if considerably less difficult and dangerous. But particularly in the division of the spoils, bonik seining is disorderly, even chaotic.

Target Behavior as a Determinant of Aggressor's Behavior in Shock-Induced Attack

Two experiments investigated the effect of target variables upon the behavior of aggressor rats during shock-induced aggression. The first experiment indicated that highly aggressive rat pairs displayed a brief decrement in fighting after they were trained to respond to shock in a manner incompatible with aggression. The incompatible response involved both rats being down on all four paws, remaining relatively immobile, and facing into opposite corners. Exp. 2 was designed to assess whether the transient nature of the cornering in Exp. 1 was due to rapid extinction of the trained response under those stimulus conditions or whether the fighting behavior of the conspecifics disrupted the cornering. These data, combined with those of Exp. 1, indicated that cornering declined most slowly in the absence of a target, more rapidly in the presence of a target also cornering, and most rapidly in the presence of a target not cornering but confined to the opposite corner. The results suggested that the specific behavior of the target disrupted the trained response and provoked attack.