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3D foot scanner is a non-contact type device that measures the shape of a foot using laser triangulation sensors. In general, a laser triangulation sensor is equipped with a single camera and a line-laser. Using only one laser triangulation sensor is insufficient to acquire accurate surface information of the full foot. In addition, the single camera in the laser triangulation sensor could cause occlusions...
A new perturbing method of utilizing a crossed ground slot is proposed for a right-handed circularly polarized (RHCP) microstrip antenna for GPS L1 band of 1.575 GHz. The crossed-slot at the ground plane and equally-divided perpendicular feed structure yields two orthogonal frequencies with the 90-degree phase difference. As a result, the TM10 and TM01 modes for the right-handed circularly polarized...
This paper presents a three degrees of freedom (3-DOF) nano-positioning stage in the plane. In order to apply machining, the stage composes of a parallel kinematic mechanism (PKM) structure with the flexure hinges driven by three piezo-electric actuators to achieve the translations in the X- and Y-axes and rotation in the Z-axis. The design of the stage aims at structural stiffness improvement and...
Many software companies are introducing the CMMI and managing a Quality Management Office (QMO) to strengthen organizational capacity and improve organizational processes. But, some of them are usually unable to make effective operation of a QMO. This is because quality management processes has been defined based on the process requirements only without considering the correlation between the SPs...
Advances in biomedical research have significantly enhanced our capability to identify drug targets for medical intervention. At same time, major technological breakthroughs such as combinatorial chemistry, computer-assisted drug design, robotic screening, and molecular cloning have made thousands of small compounds and macromolecules such as proteins and nucleic acids available for therapeutic consideration...
In this paper, we deal with optimal mimicking of human motions by humanoid robot, KIBO (by Korea Institute of Science and Technology, KIST) in real-time. Particularly, the key issue is to investigate stability discriminants for preventing humanoid robot, KIBO, from falling down when imitation human body. First of all, we replace skeleton data of human body collected from 3D depth camera, KINECT (Microsoft)...
NAND Flash-based solid-state drives (SSDs) have been adopted in enterprise storage applications that require high capacity and high-throughput performance. In recent years, a SATA interface supporting only up to 600MB/S throughput has hindered the accelerating performance growth of SSDs due to the host bandwidth limit. A PCI Express (PCIe) has emerged to close the limit because it can deliver 1GB/s...
This paper presents a high quality factor bandstop resonator working in two bands. It has a distributed structure fabricated in the type of microstrip. The part of resonator is made in the model of composite right/left handed (CRLH) transmission line (TL), which works in its stop band. It is different from the conventional CRLH-TL as a shunt stub which works in its pass band. This resonator has very...
This paper presents a compact printed dual-band WLAN antenna with a shorted coupling strip for mobile terminals. A shorted coupling strip is utilized to improve impedance matching at the upper band and a chip capacitor is used to reduce an antenna size. The proposed antenna area is 10 × 5 mm2 with a ground size of 70 mm × 40 mm. The proposed antenna yields a VSWR of better than 3:1 at dual bands of...
A polarization reconfigurable microstrip patch antenna with a complementary split ring resonator (CSRR) is proposed. The proposed antenna consists of a CSRR and a p-i-n diode on the patch for switchable polarization. The proposed antenna has dual polarization: linear polarization (LP) and right-handed circular polarization (RHCP). Simulated and measured results agree well.
In this paper, a novel design of the metamaterial-based microstrip antenna with the ground slots is proposed for gain-enhanced dual-band operation. To realize the dual-band operation of the left-handed and the zeroth-order resonant mode, six equilateral triangular patches which are consists of the coupling gap and the through-hole via are isotropically arranged and the feeding structure is wired to...
In this paper, a new antipodal linearly tapered slot antenna (ALTSA) with unequal half-circular slots embedded on both edge-sides is proposed to improve an antenna gain. The proposed antenna operates over the frequency band from 3.1 GHz to more than 10.6 GHz, which is assigned to Ultra-Wideband (UWB) wireless communication. The proposed antenna has been improved in a gain and reduced to backward radiation...
In this paper, a new composite right/left-handed transmission line (CRLH-TL) with inductive ground slots is proposed to improve an operating bandwidth for zeroth-order resonant antenna applications. From the equivalent circuit model of the inductive slot-loaded CRLH-TL (SL CRLH-TL) unit-cell, the characteristic impedance and the dispersive relation are derived. By adding inductors on the ground slots,...
We have earlier proposed the tight-coupling architecture for adding new data types into the DBMS engine. In this paper, we introduce the Odysseus ORDBMS and present its tightly-coupled spatial database features. We demonstrate a geographical information system(GIS) implemented using Odysseus.
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