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We present an unsupervised representation learning approach using videos without semantic labels. We leverage the temporal coherence as a supervisory signal by formulating representation learning as a sequence sorting task. We take temporally shuffled frames (i.e., in non-chronological order) as inputs and train a convolutional neural network to sort the shuffled sequences. Similar to comparison-based...
Extracting similar datapath bit slices which handle highly parallel bit operations can help a modern placer to obtain better solutions for datapath-oriented designs. A current state-of-the-art datapath bit slicing method achieves the best extraction results using a network-flow-based algorithm. However, this work has two major drawbacks: (1) it extracts only a limited number of bit slices for datapaths...
An accuracy factor incorporated in the nonuniform fast Fourier transform (NUFFT) algorithm is tested with symmetric and asymmetric narrow-width Gaussian pulses. Two measures of calculation errors, E2 and E∞, are used to demonstrate the effectiveness of the accuracy factor.
Object motion blur is a challenging problem as the foreground and the background in the scenes undergo different types of image degradation due to movements in various directions and speed. Most object motion deblurring methods address this problem by segmenting blurred images into regions where different kernels are estimated and applied for restoration. Segmentation on blurred images is difficult...
A placer without considering modern technology and region constraints could generate solutions with irresolvable detailed-routing violations or even illegal solutions. This paper presents a high-quality placement algorithm to satisfy technology and region constraints and optimize detailed-routing routability with three major techniques: (1) a clustering algorithm followed by two-round quadratic placement...
An extended infrared photoresponse is observed in a ZnO/InN/GaN heterojunction diode with InN grown by MOCVD. The external quantum efficiency is measured between 1200 and 1800 nm and can be as high as 3.55%.
The nano-whisker and nano-rod of ITO deposited with oblique evaporation method has been investigated optically. This ITO hybrid structure above ZnO medium reduces optical reflection to 3.7% in the range between 365 and 800 nm.
In this paper, a novel six-channel triplexer based on multipath-embedded stub loaded resonator is proposed. The six-channel triplexer (2.4 / 3.5 GHz, 5.2 / 6.8 and 5.8 / 8 GHz) is composed of three pairs of coupled multipath-embedded stub loaded resonator (SLRs) and the source-load coupling lines. The multipath-embedded SLRs are having two paths to form dual-passband response. The six-channel triplexer...
This paper presents a compact dual-band bandpass filter that involves using the inductive-coupled stepped impedance resonators (SIRs) for achieving simultaneously compact circuit size and good dual-band performance. The filter is designed at 1.8 / 3.5 GHz and constructed by two pairs of inductive-coupled SIRs and source-load lines. By properly tuning the impedance ratio (K1 and K2), length ratio (α...
Electrical load forecasting is vitally important to modern power system planning, operation, and control. In this paper, by focusing on historical load data and calendar factors, we present a hybrid method using period refinement scheme and adaptive strategy for building peak hour period and off-peak hour period models in day-of-week for one-day-ahead for load forecasting. They are evaluated using...
In this paper, the compact tri-band bandpass filter (BPF) using multilayer substrate technique is presented. The filter is designed at 2.4 GHz, 3.5 GHz and 5.2 GHz. The multilayered filter consists of the cross-shaped stepped-impedance resonator (CS-SIR) on the top layer for generating the 1st passband and two T-shaped stepped-impedance resonators (TS-SIR) on the bottom layer for generating the 2nd...
Novel vapor cooling condensation system was designed and used to grow ZnO-based thin films for fabricating optoelectronics devices with high quality. The performances of thin films, ultraviolet light-emitting diodes, and ultraviolet photodetectors were studied.
In this work, the transparent thin film transistors (TTFTs) with slightly Al-doped ZnO films as the channel layers were fabricated by a magnetron radio frequency co-sputtering system. The performances of the TTFTs with various thicknesses of the channel layers were characterized. When the thickness of the channel layer was 25 nm, the field-effect carrier mobility and the on/off current ratio of the...
SiGe based metal-oxide-semiconductor field-effect transistors (MOSFETs) were fabricated, in which the SiGe channel layer was deposited by using laser-assisted plasma-enhanced chemical vapor deposition (LAPECVD) system. The characteristics were compared with the device without laser assistance.
To improve the electrical conductivity of ZnO nanorods, indium-doped ZnO (ZnO:In) is a promising structure. ZnO:In nanorods were grown using vapor cooling condensation method at low temperature through anodic alumina membranes (AAM) in a thermal coater. With assistance of liquid nitrogen cooling system to cool the substrate and vacuum pumping system to provide the molecular rising force, the uniform...
The MgxZn1-xO thin films for x varying from 0 to 0.36 were deposited by RF magnetron sputtering. The MgxZn1_xO films are characterized by X-ray diffraction and UV-visible spectroscopy. The MgxZn1-xO metal-semiconductor-metal ultraviolet photocodetectors (MSM-UPDs) were fabricated. We also investigated the electrical and optical properties of the MSM-UPDs.
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