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This paper presents the FPGA implementation of neuron block units based on a sigmoid activation function for artificial neural networks (ANNs) applications. The Coordinate Rotation Digital Computer (CORDIC) algorithm has been employed for the approximation of sigmoid activation function. The proposed design was simulated using ModelSim XE II and synthesized using Altera's Quartus II with a Cyclone...
Kernel Samepage Merging (KSM) is a Linux kernel module for improving memory utilization by searching and merging the redundant memory pages. When working with the hypervisors, such as Kernel-based Virtual Machine, KSM helps share identical memory pages of the hosted virtual servers so as to increase the server density. Nevertheless, while KSM improves the efficiency of the host system, it hurts the...
This paper presents present a study and implementation of a three-level boost converter. This converter feature includes low devices voltages stress requirement for high voltage application, small inductor size that leads to the reduction of cost and size and can be operated with a wide range input voltage. Unlike conventional method, output capacitor voltage balancing was done by a slight phase shift...
In this paper, a simple and fast de-embedding procedure suitable for the X-parameter measurement is presented. The X-parameters of the dummy structures including open and short are measured and then directly subtracted from the device under test (DUT) to remove parasitic effects. Compared with the conventional procedure, this approach can provide a fast and simple algorithm based on the matrix transformation...
Human's judgment has been shown to be thin-sliced in nature, i.e., accurate perception can often be achieved for a short duration of exposure to expressive behaviors. In this work, we develop a mutual information-based framework to select the most emotion-rich 20% of local multimodal behavior segments within a 3-minute long affective dyadic interaction in the USC CreativeIT database. We obtain a prediction...
A new interleaved high step-up dc-dc converter with the circuit of cumulative voltage unit (CVU) is proposed in this paper. The proposed converter is suitable to the application of requiring high ratio of the output voltage to input voltage. Only two switches are required to form the double boosting path and the interleaved topology. The new technique of the cumulative voltage unit forms the post...
In this paper, a dual-band switchable bandpass filter using switchable connected-coupling lines is presented. The switchable connected-coupling line is formed by embedding a RF traveling-wave switch into a connected-coupling line. In thru state, the switchable connected-coupling line serves as an admittance inverter to provide adequate coupling for a bandpass response. In isolated state, the switchable...
The Internet of Things (IoT) refers to uniquely identifiable objects (things) which can interact with other objects through the global infrastructure of wireless/wired Internet. The communication technique among a large number of resource-constrained devices that generate large volumes of data has an impact on the security and privacy of the involved objects. In this paper, we propose an encryption...
A reconfigurable bandpass filter (BPF) with independently adjustable passband edges is demonstrated. The filter is formed by a H-type multi-mode resonator (MMR) loaded with varactor diodes. The equivalent even- and odd-mode circuits of the proposed varactor loaded MMR are analyzed. The bandwidth reconfigurability is achieved by using varactor diodes to individually relocate the even-mode resonant...
Mathematical programming approaches, such as Lagrangian relaxation, have the advantage of computational efficiency when the optimization problems are decomposable. Lagrangian relaxation belongs to a class of primal-dual algorithms. Subgradient-based optimization methods can be used to optimize the dual functions in Lagrangian relaxation. In this paper, the penalty surrogate subgradient (PSS) method...
In this paper, a new H-type triple-mode resonator is proposed to design a compact wideband bandpass filter. Due to the structure geometry, even-odd-mode analysis is applied to investigate the resonance conditions of the H-type resonator. To enhance the input/output coupling, an inter-digital coupling structure is adopted. A wideband bandpass filter is designed with a fractional bandwidth (FBW) of...
The study proposes a new interactive-video e-learning system, and the experiment targets are medical interns. The medical interns are necessary to learn through a variety of clinical cases. The system provides the function of case-based multimedia teaching materials. The medical records are depending on different cases, and instructors can online upload and edit them. The record includes text, image,...
This study proposes an automatic bird sound identification system to help people learn to identify bird species. The system is built upon a two-stage identification framework. The first stage performs call/song classification. If an unknown sound clip is classified as a call, it is then handled by a call identifier in the second stage; otherwise, it is handled by a song identifier. Both identifiers...
Memetic algorithm (MA) is a hybrid evolutionary algorithm (EA) that combines genetic operators with local search procedures. With global exploration and local exploitation in search process, the memetic algorithm can find near global solutions. On the other hand, mixed-integer hybrid differential evolution (MIHDE), as an EA-based search algorithm, has been successfully applied to many mixed-integer...
Mathematical programming approaches, such as Lagrangian relaxation, have the advantage of computational efficiency when the optimization problems are decomposable. Lagrangian relaxation belongs to a class of primal-dual algorithms. Subgradient-based optimization methods can be used to optimize the dual functions in Lagrangian relaxation. In this paper, three subgradient-based methods, the subgradient...
This paper presented a lightweight mutual authentication protocol for wireless sensor network (WSN) applications. The transmitted data are protected with a proposed encryption function which only requires simple exclusive-OR (XOR) arithmetic operations. The advantages of the present proposed scheme not only provide low computational cost but also allow legitimate users can freely change their own...
Because we adopt high precision microelectronic assembly technologies during the manufacturing of radar T/R modules, these modules are complex and delicate. Common cleaning technologies such as ultrasonic cleaning can't satisfy the requirement of high precision cleaning of these modules. This article introduces some precise cleaning technologies, these cleaning technologies not only can make T/R module...
This paper presents the research of a low computational complexity, heuristic-based algorithm for indoor path tracking over a low-cost, simple connected wireless sensor network in the applications of the tour guidance in the theme exhibition, large-scale market and shopping center, etc. This heuristic path tracking algorithm (HPTA) incorporates the weighted vertex-in-the-intersection method for localization...
In this work, IMC (Inter metallic compound) of lead free (Sn-Ag-Cu (SAC)) and lead (62Sn-36Pb-2Ag (SP)) solder joint on the four kinds of surface finished of ball grid array (BGA) pad, such as Immersion Tin (ImSn), Organic solderability preservatives (OSPs), Ni-P/Pd/Au (ENEPIG), and Ni-P/Au (ENIG) were investigated by Focus Ion Beam microscope (FIB). Sample after failure ageing conditions (Baking...
Wireless sensor network (WSN, Wireless Sensor Network) is a kind of autonomous network with sensor nodes. It is different from traditional RFID system that the WSN is through the distribution of sensor nodes in different locations to monitor environmental conditions. The collected data from sensor nodes were sent back to the base station for further analysis and processing to compensate the shortage...
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