This paper presents different slotted structures such as U-slot, half U-slot, half π-slot and π-slot to achieve the dual band characteristics of the antenna etched on a glass epoxy substrate (εr= 4.3) is suspended over the ground plane with an air gap for all slotted structures [1-2]. A comparative analysis has been made for the U and half U, π and half π designs are proposed by reducing area t...

Beam connections with reduced drilled section and slotted web have been presented after the Northridge earthquake (1994). Their new geometrical shapes have been resulted in weakening of beams and subsequently the bette rperformance of connections in the earthquakes. In this research, the advantages of both connections, mentioned above, have been studied in the Slotted Web Drilled Flange (SWDF) ...

Bluetooth is an open specification for a technology to enable short-range wireless communications that operate in an ad hoc fashion. Bluetooth uses frequency hopping with a slot length of 625 ms. Each slot corresponds to a packet and multi-slot packets of three or five slots can be transmitted to enhance the transmission efficiency. However, the use of multi-slot packet may degrade the transmis...

Slot waveguides allow for high optical confinement in a planar optical waveguide. Here we show a method for maintaining this high degree of confinement in slot waveguides with sharp bends. This high confinement can be achieved by using an asymmetric slot-based structure, where the mode in the bend remains localized in the slot region. We show that the relative power inside the slot can be as hi...

A novel idea of conformal corrugated edges (CCE) is put forward in this paper for tapered slot antennas to obtain improved low-frequency characteristics. The CCE is realized using conformal slots whose two longitudinal boundary lines are modelled using curvilinear function of the curves that form the tapered slots. So the conformal slots can sufficiently corrugate edges of the tapered slot ante...

a method has been presented for finding the solution surface of the npde: u  c , bounded by a general space curve. the method is based on the geometric characteristics of the surface, and is called the “cone-slot method”. it has been shown that such a surface can be obtained by movement of a cone inside the slot formed by the boundary space curve. an algorithm has been suggested on the basis ...

Computer games have made a significant cultural, social, economic, political, and technological impact on society (Newman 2004). Given the widespread popularity of video games, their ability to sustain long-term player engagement with challenging tasks (Gee 2003), and their tendency to elicit proactive player comm unities (Rheingold 1994), it should come as no great surprise that educators have...

Slot waveguides are becoming more and more attractive optical components, especially for chemical and bio-chemical sensing. In this paper an accurate analysis of slot waveguide fabrication tolerances is carried out, in order to find optimum design criteria for either homogeneous or absorption sensing mechanisms, in cases of low and high aspect ratio slot waveguides. In particular, we have focus...

A key challenge of designing coherent semantic ontology for spoken language understanding is to consider inter-slot relations. In practice, however, it is difficult for domain experts and professional annotators to define a coherent slot set, while considering various lexical, syntactic, and semantic dependencies. In this paper, we exploit the typed syntactic dependency theory for unsupervised ...

We design and implement an optical slot switching network for bulk content transfer. To realize the slot switching network, we employ the generalized multiprotocol label switching (GMPLS) extension protocol to reserve and release slots dynamically according to the application. We use optical switches as relay points in the slot switching network, and we employ a 10 ns highspeed Pb,La Zr,Ti O3 (...