Among the four basic skills of listening, speaking, reading and writing, writing is a complex output skill, which can demonstrate comprehensive linguistic competence language learners. For second learners, main problem in how to use native accurate expressions order reduce influence their mother tongue on English so as make compositions more coherent authentic. Probably application lexical chunks teaching could solve these problems some way. In acquisition, large number exist natural...

This study uses the literature review method to explore washback effect of HSK (Hanyu Shuiping Kaoshi) on students’ learning and teachers’ teaching. It is found that has both teaching, positive greater than negative ones. In general, more significant motivation for taking test, perception HSK, difficulty test regulations colleges universities are main factors affect intensity effect. Based above findings, this paper puts forward feasible suggestions students, teachers itself, in order give...

In this paper, we propose a prior guided transformer for accurate radiology reports generation. the encoder part, radiograph is firstly represented by set of patch features, which obtained through convolutional neural network and traditional encoder. Then an Additive Gaussian model applied to represent knowledge based on unsupervised clustering sparse attention. decoder embeddings are acquired probabilistically sampling from prior. visual language embeddings, fused our proposed Prior Guided...

Crosstalk has become an urgent issue for single-photon avalanche diode arrays. In previous work, trenches were introduced between pixels to block the crosstalk optical path in planar InGaAs/InP arrays, since was considered as main mechanism. However, suppression effect of this solution is not satisfactory. Here, we demonstrate a carrier extraction structure efficiently reduce by electrically guiding photogenerated holes non-pixel region surface, find that optical-electrical dominant...

Accurate identification and classification of atmospheric particulates can provide the basis for their source apportionment. Most current research studies mainly focus on particles based energy spectrum particles, which has problems low accuracy being time-consuming. It is necessary to study method with higher accuracy. In this paper, a convolutional neural network (CNN) model attention mechanism proposed identify classify scanning electron microscopy (SEM) images particles. First, work...

License plate detection is a challenging problem due to the large visual variations in complex environments, such as motion blur, occlusion, and lighting changes. An advanced discriminative model needed accurately segment license plates from backgrounds. However, effective models for tend be computationally prohibitive. To address these two conflicting challenges, we propose detect based on CNNs, shallow CNN deep CNN. The used quickly remove most of background regions reduce computation...

Abstract Fish tracking in the natural underwater environment is of great value for many applications, such as fish behavior analysis and estimation population density. Due to variety swimming postures, uneven illumination, complicated background real-world environment, most existing object algorithms are not ideal tracking. In this paper, a algorithm based on TLD (Tracking-Learning-Detection) proposed, which shape color features fully utilized achieve accurate rapid The proposed mainly...

Abstract— The recent revolution in display technology enables bright high‐resolution displays, thereby removing one of the bottlenecks video quality. How to profit from HD flat‐panel displays when watching legacy SD‐video material will be discussed. An overview resolution up‐conversion techniques presented, including an objective (MSE‐scores) and a subjective assessment. Screenshots are also included illustrate quality algorithms.

This paper proposes a method for classifying crystal planes based on the bond angle characteristics of quartz unit cells and constructs an etch rate model at both macro micro scales. By omitting oxygen atoms from cell structure, was established to partition atomic arrangement surface. approach used analyze etching processes typical (R, r, m, (0001)), approximating process crystals as cyclic removal certain planes. led development micro-geometric parameters Additionally, using proposed...

A dual-wavelength continuous-wave (CW) diode-pumped Nd:LuVO4 laser that generates simultaneous action at the wavelengths 1066 and 1343 nm is demonstrated. total output power of 2.58 W was achieved incident pump 18.2 W. Furthermore, intracavity sum-frequency mixing then realized in a LBO crystal to reach yellow range. We obtained CW 830 mW 594 nm.

Greater adoption of light emitting diodes and integration information communication technologies (ICT) is transforming lighting into the Internet-of-Things (IoT) era. In this paper, we outline role IoT can play in a connected building eco-system. We present generic system architecture, explain how systems serve as provider both non-lighting data. A control data web services model then proposed through which third-party access finally provide examples new applications enabled with

Blocking artifacts may appear in block based digital image and video coding systems like JPEG MPEG, especially when compression is done at a low bit-rate. The blocking can degrade the perceived quality. In this paper, method for reducing decoded using adaptive filters proposed. selection of proper filter on local pattern and/or relative pixel position block. results show significant quality improvement. To evaluate methods, both Mean Square Error (MSE) scores Block-edge Impairment Metric...

The introduction of HDTV asks for spatial up-conversion techniques enabling the display standard resolution material. Recently, X. Li and M. Orchard proposed 'New Edge-Directed Interpolation' (NEDI) algorithm high quality up-scaling natural images. We shall show that method, although it generally behaves well, introduces annoying artifacts in fine-textured areas. Based on an analysis these taking advantage temporal correlation between video images, we propose improved NEDI algorithm. In our...

A power grid harmonic signal is characterized as having both nonlinear and nonstationary features. novel multifractal detrended fluctuation analysis (MFDFA) algorithm combined with the empirical mode decomposition (EMD) theory template movement proposed to overcome some shortcomings in traditional MFDFA algorithm. The used study feature of signals at different frequencies. Firstly, decomposed characteristics wavelet transform multiresolution are employed obtain components frequency bands....

A diode-end-pumped continuous-wave (CW) simultaneous dual-wavelength laser operation at 1062 and 1331 nm in a single Nd:GGG was demonstrated. total output power of 1.08 W the two fundamental wavelengths achieved incident pump 18.2 W. The optical-to-optical conversion is up to 5.9% with respect power. To best our knowledge, this first work on CW diode pumped laser. article published original.)

Abstract Fish tracking is an important component of analyzing fish behavior and estimating population density. Due to the high degree freedom motion as well complex natural underwater environment, most existing object methods are not ideal for tracking. In this paper, a method based on feature fusion scale adaptation proposed, which built kernelized correlation filter (KCF) achieve accurate rapid The proposed mainly focuses selection estimation in KCF framework. selection, color-naming...

The reluctance changing principle of resolver is divided into two kinds: one varying through coupling area and the other air gap. mechanical eccentricity makes much more influence on precision pair pole resolver. In this article, axial flux with new magnetic structure put forward, which has compensating character inside its side prototype both exciting windings signal in stator, are vertical to each other. There no winding rotor inclined ring set it. EMF got using FEM. At same time, 4-pole...