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Refractive indices of a 1 mol % MgO-doped stoichiometric LiTaO3 (SLT) crystal in the region of 0.85 ∼ 1.59 THz and for the temperature range of 80 ∼ 300 K were deduced via the terahertz generation process using a fanned-out periodically poled SLT. In addition, temperature-dependent Sellmeier equation was derived.
Along with the coming of the aging society, the passive robot walking helper is introduced for providing safe mobility for the elderly, which features continuous energy dissipation from the system with brakes for steering. When this passive walking helper is applied for guidance and obstacle avoidance, it is crucial to determine proper braking torques in accordance with user-applied force for avoiding...
A three-dimensional (3-D) transient non-isothermal model of VRFBs is developed by rigorously accounting for the electrochemical reactions of four kinds of vanadium ions (V2+, V3+ VO2+ and VO2+) and resultant mass and heat transport processes. Particular emphasis is placed on analyzing various heat generation mechanisms, including irreversible and reversible heat generations due to vanadium redox reactions...
This research is purposed for the developing battery charger using the internal parameters — internal voltage of batteries and phase-which the existing charger don't use. For the research, the volume of applied voltage and current to batteries has been adjusted using direct connected capacity, and output voltage and current has been sensed. The sensed data go through the DFT, and DFT shows direct...
In this paper a new multi-baseline stereo matching framework based on a modified belief propagation algorithm is presented to acquire dense depth-map. We propose a new matching cost, Extended Mean of Absolute Differences as local evidence in order to consider all possible disparity candidates and obtain dense depth-map. Also we propose a method that decides the weight parameter λ in belief propagation...
A general description of the Anisotropic Layer Theory, derived in the polar coordinate system, and applied to the analysis of squirrel-cage induction motors (IMs), is presented. The theory considers non-conductive layers, layer with predefined current density and layers with induced current density. The electromagnetic field equations are solved by means of Fourier analysis. Further, we propose two...
Spatio-temporal databases aim at appropriately managing moving objects so as to support various types of queries. While much research has been conducted on developing query processing techniques, less effort has been made to address the issue of when and how to update location information of moving objects. Previous work shifts the workload of processing updates to each object which usually has limited...
Linear Feedback Shift Registers (LFSRs) have been extensively used for compressed manufacturing test. They have been recently employed as a foundation for porting constrained-random stimuli from a pre-silicon verification environment to in-system validation. This work advances this concept by improving both the hardware efficiency and the duration of in-system validation experiments.
There are a lot of pedestrian flows in the commercial facility. These flows often cross each other, and change goals, e.g. reception desk or ticket-vending machine. Moreover, too long people queue at a goal sometimes blocks up other flows and makes us uncomfortable. In order to reduce the congestion and realize the amenity space the environmental design considering the swarm behavior of people is...
When generating the verification stimuli in a pre-silicon environment, the primary objectives are to reduce the simulation time and the pattern count for achieving the target coverage goals. In a hardware environment, because an increase in the number of stimuli is inherently compensated by the advantage of real-time execution, the objective augments to considering hardware complexity when designing...
This paper proposes a vehicle stability control algorithm that uses velocity and yaw rate during cornering for an in-wheel independent drive vehicle. The vehicle velocity control at the cornering determines the velocity limit that the vehicle can sustain the given cornering radius and controls the vehicle velocity for safe cornering if the vehicle velocity is faster than the velocity limit. The yaw...
To identify the joint parameters (e.g. the position of the joint center for a spherical joint, the position and the orientation of the joint axis for a revolute joint, etc.) from motion capture data, existing provably-correct algorithms require that at least three markers be attached to either of the two links adjacent to the joint. However, as shown in this article, it turns out that the identification...
Digital watermarking is a good tool for healthcare information management systems. The well-known Quantization Index Modulation (QIM) based watermarking has its limitations as the host image will be destroyed, however, the recovery of biomedical image is essential to avoid misdiagnosis. A transparent yet reversible watermarking algorithm is required for biomedical image applications. In this paper,...
With the growing penetration of renewable energy resources, the grid operators place more and more emphasis on their grid integration requirements. The Low-voltage ride-through (LVRT) capability is one of the most important issues for maintaining the grid stability. This paper proposes a LVRT technique for effective utilization of the ampere capacity of the grid-connected converter to meet the LVRT...
Multiplication, as one of the four basic operations embedded in arithmetic processors, is nowadays experiencing being spotlighted by the hardware designers involved in the revived decimal arithmetic. The decimal hardware units usually employ the sequential implementation for this operation, due to the high area cost of the parallel decimal multipliers. However, the main drawback of this iterative...
This paper presents a Radix-100 divider based on decimal non-restoring and selection by truncation method. Two decimal quotient digits can be selected in each iteration, which can reduce half of the iteration cycles. Initialization is required to scale the divisor into a pre-calculated range, and also used for generating some multiples of the scaled divisor. Implemented with STM 90-nm standard cells...
The missing values in gene expression data harden subsequent analysis such as biclustering which aims to find a set of coexpressed genes across a number of experimental conditions. Missing values are thus required to be estimated before biclusters detection. Existing estimation algorithms rely on finding coherence among expression values throughout the entire genes and/or across all the conditions...
In this paper we present a framework and a set of algorithms for determining faults in networks when large scale outages occur. The design principles of our algorithm, netCSI, are motivated by the fact that failures are geographically clustered in such cases. We address the challenge of determining faults with incomplete symptom information due to a limited number of reporting nodes in the network...
In the hybrid SAW-ED deposition system for conductive thin-layer, droplets generation depend upon the SAW. Also, the electrostatic field can help pull off the droplets to the substrates. In this paper, the efficiency of hybrid SAW-ED head is studied analytically. For the development of hybrid SAW-ED deposition system, the optimized parameters for conductive thin-layer can be ascertained from the results...
In the densely-populated urban areas, pedestrian flows often cross each other and congestion occurs. It may cause discomfort feeling or pedestrian accidents. In order to reduce the congestion or the risk of accidents, it is required to control swarm flows of pedestrian. This paper proposes an implicit control method of the crossing pedestrian flows. Pedestrian flow is modeled with the continuum fluid...
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