317 research outputs found
An Investigation into the Connection between Language Proficiency and Text Analysis Abilities in English Learners
This study’s objective is to evaluate whether or not there is a correlation between students’ command of the English language and their analytical prowess with regard to written material. Through quantitative and qualitative study on students with varied degrees of linguistic proficiency, it has been found that an increase in one’s level of linguistic competence is strongly and favorably associated with an increase in one’s ability for textual analysis. This discovery was made on students with varying levels of linguistic proficiency. Learners who have a higher degree of language competency are able to more effectively absorb vocabulary, grammatical structure, and logical links in the discourse when reading and interpreting English texts. This is because they have a better understanding of the English language. As a consequence of this, they are capable of performing text analysis in a manner that is both more effective and more accurate than before. This article’s goal is to give instructional strategies for learners of all language levels in order to optimize the process of strengthening those learners’ ability to evaluate texts. The target audience for this article is learners of all language levels. When these strategies are utilized, educators will be provided with practical recommendations that will assist them in more effectively directing students toward mastery of the basic text analysis skills. The outcomes of this study may, in some way, have an impact on the educational practice of teaching English as a second language
Vulnerability assessment of the fishery system in China’s coastal provinces since 2000
Coastal fishery systems are vital for both the environment and the economy, and at present, they face heightened vulnerability due to global climate change and natural disasters. A clearer understanding of the challenges that the system presents can be obtained by examining the vulnerabilities of fishery systems. This study employed a vulnerability scoping diagram framework and a multi-indicator approach combined with the entropy weight method for assigning weights to systematically evaluate the vulnerabilities of fishery systems in China’s coastal provinces. The spatiotemporal variation characteristics of vulnerability were analyzed and characterized, and the primary obstacles that affect vulnerability are discussed. The findings suggest that China’s coastal provinces’ fishery systems display vulnerability in terms of both time and space. From a temporal perspective, Liaoning, Hebei, and Shandong provinces exhibited an increasing trend in vulnerability, while Tianjin, Jiangsu, Zhejiang, Shanghai, Fujian, Guangdong, Guangxi, and Hainan showed decreasing trends. From a spatial perspective, Hainan and Liaoning’s fishery systems exhibited extremely high vulnerability in most years. In contrast, Tianjin consistently experienced extremely low vulnerability in most years. From the perspective of obstacles, the main factor was the funding for the extension of aquaculture technology, and this remained the primary obstacle factor across all years. The findings are significant for enhancing our understanding of vulnerability in fishery systems and for strengthening disaster prevention and mitigation measures. The results provide robust support for the improvement of management and the protection of fishery systems
catena-Poly[[[(1,10-phenanthroline)copper(I)]-μ-cyanido] ethanol hemisolvate]
In the title coordination polymer, {[Cu(CN)(C12H10N2)]·0.5C2H5OH}n, there are two CuI ions, two 1,10-phenanthroline (phen) ligands and two cyanide ions in the asymmetric unit along with a highly disordered ethanol solvent molecule, which was modelled as being disordered over two sets of sites in a 0.829 (7):0.171 (7) ratio. The orientation/ordering of the C and N atoms of the cyanide ions could not be determined in the present refinement and they were modelled as being statistically disordered. Both copper ions are coordinated by an N,N′-bidentate phen ligand and two cyanide ligands, generating distorted tetrahedral CuN2
Q
2 (Q = C or N) tetrahedra. The μ-cyanide ligands link the metal ions, forming a zigzag chain propagating in [001]. The chains are cross-linked by numerous aromatic π–π stacking contacts between adjacent phen rings [minimum centroid–centroid separation = 3.620 (3) Å]
N-Benzylpyridin-2-amine
In the title compound, C12H12N2, the dihedral angle between the benzene and pyridine rings is 67.63 (8)°. Molecules are linked into centrosymmetric dimers by a simple intermolecular N—H⋯N hydrogen bond with graph-set motif R
2
2(8)
Self-consistent simulations of beam-beam interaction in future e + e - circular colliders including beamstrahlung and longitudinal coupling impedance
For the past generation {e}^{+}{e}^{\ensuremath{-}} storage ring colliders, we usually used natural bunch length or its impedance lengthened value in beam-beam simulations instead of considering the impedance directly. In the future colliders, such as FCC-ee and CEPC, the beam-beam interaction becomes essentially three dimensional. In order to increase the luminosity, the future accelerators will collide very intense beams of high energy with low emittances and small beta functions at the collision points exploiting the crab waist collision scheme with a large Piwinski angle. For these extreme parameters several new effects become important for the collider performance such as beamstrahlung, coherent X-Z instability, 3D flip-flop so that the longitudinal beam dynamics should be also treated in a self-consistent manner. In this paper we describe the numerical code for the self-consistent 3D beam-beam simulations including beamstrahlung and the longitudinal beam coupling impedance and study interplay of different effects arising in beam-beam collisions of the future colliders
N-(1-Naphthyl)benzenesulfonamide
In the title compound, C16H13NO2S, the C—SO2—NH—C torsion angle is −70.1 (2)°. The dihedral angle between the planes of the naphthyl ring system and the phenyl ring is 34.67 (4)°. In the crystal, molecules are linked by intermolecular N—H⋯O hydrogen bonds into chains along [100]. There are also π–π interactions between adjacent naphthyl groups [interplanar spacing = 3.541 (3) Å] for molecules stacked along [100]
Seed Feature Maps-based CNN Models for LEO Satellite Remote Sensing Services
Deploying high-performance convolutional neural network (CNN) models on
low-earth orbit (LEO) satellites for rapid remote sensing image processing has
attracted significant interest from industry and academia. However, the limited
resources available on LEO satellites contrast with the demands of
resource-intensive CNN models, necessitating the adoption of ground-station
server assistance for training and updating these models. Existing approaches
often require large floating-point operations (FLOPs) and substantial model
parameter transmissions, presenting considerable challenges. To address these
issues, this paper introduces a ground-station server-assisted framework. With
the proposed framework, each layer of the CNN model contains only one learnable
feature map (called the seed feature map) from which other feature maps are
generated based on specific rules. The hyperparameters of these rules are
randomly generated instead of being trained, thus enabling the generation of
multiple feature maps from the seed feature map and significantly reducing
FLOPs. Furthermore, since the random hyperparameters can be saved using a few
random seeds, the ground station server assistance can be facilitated in
updating the CNN model deployed on the LEO satellite. Experimental results on
the ISPRS Vaihingen, ISPRS Potsdam, UAVid, and LoveDA datasets for semantic
segmentation services demonstrate that the proposed framework outperforms
existing state-of-the-art approaches. In particular, the SineFM-based model
achieves a higher mIoU than the UNetFormer on the UAVid dataset, with 3.3x
fewer parameters and 2.2x fewer FLOPs.Comment: 11 page
TFormer: A Transmission-Friendly ViT Model for IoT Devices
Deploying high-performance vision transformer (ViT) models on ubiquitous
Internet of Things (IoT) devices to provide high-quality vision services will
revolutionize the way we live, work, and interact with the world. Due to the
contradiction between the limited resources of IoT devices and
resource-intensive ViT models, the use of cloud servers to assist ViT model
training has become mainstream. However, due to the larger number of parameters
and floating-point operations (FLOPs) of the existing ViT models, the model
parameters transmitted by cloud servers are large and difficult to run on
resource-constrained IoT devices. To this end, this paper proposes a
transmission-friendly ViT model, TFormer, for deployment on
resource-constrained IoT devices with the assistance of a cloud server. The
high performance and small number of model parameters and FLOPs of TFormer are
attributed to the proposed hybrid layer and the proposed partially connected
feed-forward network (PCS-FFN). The hybrid layer consists of nonlearnable
modules and a pointwise convolution, which can obtain multitype and multiscale
features with only a few parameters and FLOPs to improve the TFormer
performance. The PCS-FFN adopts group convolution to reduce the number of
parameters. The key idea of this paper is to propose TFormer with few model
parameters and FLOPs to facilitate applications running on resource-constrained
IoT devices to benefit from the high performance of the ViT models.
Experimental results on the ImageNet-1K, MS COCO, and ADE20K datasets for image
classification, object detection, and semantic segmentation tasks demonstrate
that the proposed model outperforms other state-of-the-art models.
Specifically, TFormer-S achieves 5% higher accuracy on ImageNet-1K than
ResNet18 with 1.4 fewer parameters and FLOPs.Comment: IEEE Transactions on Parallel and Distributed System
Bis[2-(1H-benzimidazol-2-yl)benzoato]copper(II) dihydrate
In the title compound, [Cu(C14H9N2O2)2]·2H2O, the Cu(II) ion lies on a centre of symmetry and is four-coordinated by two N atoms and two O atoms from two 2-(1H-benzimidazol-2-yl)benzoate ligands in a square-planar environment. The benzimidazol and benzyl rings form a dihedral angle of 42.8 (5)°. The molecule contains two H-bonded carboxyl O acceptors and two H-bonded N—H donors in the benzimidazol groups, which interact with two symmetry-related uncoordinated water molecules so that neighboring molecular units are linked by (O—H)water⋯Ocarboxyl hydrogen bonds with an R
2
4(8) graph-set motif, generating a helical chain in the a-axis direction. These chains are, in turn, interconnected by (N—H)benzimidazol⋯Owater hydrogen bonds, forming a three-dimensional supramolecular network
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