Tunable multiband microstrip antenna for 5GHz WLAN

Copyright @ 2013. Ali Ejaz, R. Nilavalan & Hattan Abutarboush. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License http://creativecommons.org/licenses/by-nc/3.0/), permitting all non commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.In this paper, a tunable Multiband Micro strip Antenna is designed, capable of tuning its operating frequency in 5GHz band independently. Two slots of E & U shape are etched to achieve multiband resonance. Two capacitors of fixed value and a varactor diode are used to achieve tuning. Proposed antenna targets the 5GHz WLAN bands; UNII-1 and UNII-2. Simulated and measured results are in good agreement

Non-agricultural Market Access: A South Asian Perspective

A key element of the Doha Round of trade negotiations is liberalisation of trade in industrial products, commonly known as non-agricultural market access (NAMA). These negotiations are important for developing countries as these will determine the market access opportunities through which they can improve their growth prospects. This paper examines the key issues of NAMA from the South Asian perspective, outlines a negotiating strategy for increased market access, and spells out some policy implications.

N,N′-Bis(3-methylbut-2-enyl)-N,N′-(1,4-phenylene)dibenzenesulfonamide

The complete mol­ecule of the title compound, C28H32N2O4S2, is generated by a crystallographic inversion centre. The dihedral angle between the central and pendant aromatic rings is 46.78 (7)°. The Car—S—N—Car (ar = aromatic) torsion angle is 73.64 (15)° and the bond-angle sum for the N atom is 350.4°. In the crystal, weak C—H⋯O inter­actions link the mol­ecules, forming a two-dimensional network lying parallel to the bc plane

2,2′,5,5′-Tetra­chloro-N,N′-diethyl-N,N′-[benzene-1,3-diylbis(methyl­ene)]dibenzene­sulfonamide

In the title compound, C24H24Cl4N2O4S2, the dihedral angles between the central benzene ring and the pendant rings are 58.09 (10) and 62.59 (10)°. The dihedral angle between the pendant rings is 81.64 (9)°. Both sulfonamide groups lie to the same side of the central ring but the C—S—N—C torsion angles [73.09 (16) and −117.35 (14)] and S—N—C—C torsion angles [−143.80 (14) and −111.45 (16)°] differ significantly for the two pendant chains. The N atoms are close to planar (bond angle sums = 356.4 and 359.5°). In the crystal, weak C—H⋯O and C—H⋯Cl inter­actions link the mol­ecules

Movies Tags Extraction Using Deep Learning

Retrieving information from movies is becoming increasingly demanding due to the enormous amount of multimedia data generated each day. Not only it helps in efficient search, archiving and classification of movies, but is also instrumental in content censorship and recommendation systems. Extracting key information from a movie and summarizing it in a few tags which best describe the movie presents a dedicated challenge and requires an intelligent approach to automatically analyze the movie. In this paper, we formulate movies tags extraction problem as a machine learning classification problem and train a Convolution Neural Network (CNN) on a carefully constructed tag vocabulary. Our proposed technique first extracts key frames from a movie and applies the trained classifier on the key frames. The predictions from the classifier are assigned scores and are filtered based on their relative strengths to generate a compact set of most relevant key tags. We performed a rigorous subjective evaluation of our proposed technique for a wide variety of movies with different experiments. The evaluation results presented in this paper demonstrate that our proposed approach can efficiently extract the key tags of a movie with a good accuracy

N,N′-Diallyl-2,2′,5,5′-tetra­chloro-N,N′-[1,3-phenyl­enebis(methyl­ene)]dibenzene­sulfonamide

In the title compound, C26H24Cl4N2O4S2, the dihedral angles between the central benzene ring and the pendant rings are 70.07 (12) and 59.07 (12)°. The equivalent angle between the pendant rings is 79.24 (12)°. Both sulfonamide groups lie to the same side of the central ring but the pendant chains have very different conformations, as indicated by their C—S—N—C torsion angles [104.66 (17) and −76.35 (19)°] and S—N—C—C torsion angles [129.61 (17) and 147.10 (17)°]. Both N atoms are close to planar (bond angle sums = 359.0 and 354.8°). In the crystal, inversion dimers are formed via a pair of weak C—H⋯O inter­actions which generate R 2 2(22) loops

Bis(cyanido-κC)bis­(cyclo­hexyl­amine-κN)mercury(II)

In the title compound, [Hg(CN)2(C6H13N)2], the HgII ion adopts an extremely distorted HgC2N2 tetra­hedral coordination. The crystal packing is influenced by weak N—H⋯N hydrogen bonds between the amino groups and the cyanide N atoms, resulting in chains of mol­ecules propagating in [110]. Both cyclo­hexyl­amine mol­ecules adopt chair conformations

N,N′-[1,3-Phenyl­enebis(methyl­ene)]di-p-toluenesulfonamide

In the title compound, C22H24N2O4S2, the dihedral angles between the central benzene ring and the pendant rings are 66.96 (13) and 69.37 (13)°. The torsion angles for the C—N—S—C fragments are −68.5 (3) and −72.6 (3)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds to generate infinite (001) sheets containing R 4 4(28) loops. A weak aromatic π–π stacking contact between one of the terminal benzene rings and its inversion-related partner is also observed [centroid-to-centroid separation = 3.796 (2) Å and slippage = 1.581 Å], as are two possible C—H⋯π contacts