Temporal action localization (TAL) in untrimmed videos recently receives tremendous research enthusiasm. To our best knowledge, this is the first attempt literature to explore task under an unsupervised setting, hereafter referred as co-localization (ACL), where only total count of unique actions that appear video set known. solve ACL, we propose a two-step ``clustering + localization" iterative procedure. The clustering step provides noisy pseudo-labels for step, and temporal co-attention...

Skeleton-based human action recognition is becoming increasingly important in a variety of fields. Most existing works train CNN or GCN based backbone to extract spatial-temporal features, and use temporal average/max pooling aggregate the information. However, these methods fail capture high-order dynamics To address problem, we propose plug-and-play module called Koopman pooling, which parameterized technique on theory. The operator linearizes non-linear system, thus providing way...

The Lhasa to Nyingchi Expressway in Xizang made efforts protect the ecological environment during its construction, but it still caused varying degrees of damage fragile ecosystems along route. Accurately assessing process change quality this region holds significant research value. This study selected Linzhi-to-Gongbo’gyamda section Lhasa-to-Nyingchi as area. Firstly, based on remote sensing index (RSEI), constructed an environmental evaluation system for region. Subsequently, using Google...

Deformation monitoring plays a pivotal role in assessing dam safety. Interferometric Synthetic Aperture Radar (InSAR) has the advantage of obtaining an extensive range deformation, regardless weather conditions. The Datengxia Water Conservancy Hub is largest in-construction China. To effectively assess safety, SBAS-InSAR (Small Baseline Subset-InSAR) technique and 86 Sentinel-1 images (from 11 February 2020, to 16 January 2023) have been employed this study monitor deformation over reservoir...

The change of spatial and temporal distribution precipitation has an important impact on urban water security. effect land cover use (LCLUC) the needs to be further studied. In this study, transfer matrix, standard deviation ellipse autocorrelation analysis techniques were used. Based data precipitation, paper analyzed its influence pattern in Guangdong–Hong Kong–Macao Greater Bay Area (GBA). results showed that from 2001 2019, area cropland, water, barren, forest/grassland GBA decreased by...

Planting vegetation is an environmentally friendly method for reducing landslides. Current vegetated slope analysis fails to consider the influence of different root architectures, and accuracy effectiveness numerical simulations need be improved. In this study, explicit smoothed particle finite element (eSPFEM) was used evaluate stability under roots. The Mohr–Coulomb constitutive model extended by incorporating apparent cohesion into shear strength soil. factors safety (FOS) four...

Complex interaction between urbanization and climate change has been showing significant impacts on natural human ecosystems. Increasing urban flooding waterlogging are associated with urbanization. The Guangdong-Hong Kong-Macao Greater Bay Area (GBA) experiences a rapid extensive urbanization, leading to intensified land use cover changes. Concurrently, the frequent occurrence of extreme precipitation events pose great challenges flood control water resource management GBA. This research...

Recently, the increase of different services makes design routing protocols more difficult in mobile ad hoc networks (MANETs), e.g., how to guarantee QoS types traffics flows MANETs with resource constrained and malicious nodes. opportunistic (OR) can make full use broadcast characteristics wireless channels improve performance MANETs. In this paper, we propose a traffic-differentiated secure from game theoretic perspective, DSOR. proposed scheme, novel method calculate trust value,...

With the proliferation of mobile applications and explosive growth devices, huge computing demands are generated, leading to more computational delays. The occur edge (MEC) pushes calculations network then realize compute-intensive tasks on resource-constrained in which task allocation is difficult. In this paper, we design a particle swarm optimization (PSO) game theoretic based for MEC. Firstly, order ensure nodes same group closer, maximizing minimum distance clustering algorithm designed...

Multicast short video streaming can enhance bandwidth utilization by enabling simultaneous transmission to multiple users over shared wireless channels. The existing network management schemes mainly rely on the sequential buffering principle and general quality of experience (QoE) model, which may deteriorate QoE when users' swipe behaviors exhibit distinct spatiotemporal variation. In this paper, we propose a digital twin (DT)-based scheme QoE. Firstly, user status emulated DT is utilized...

Self-supervised skeleton action recognition has gained notable attention for its reduced reliance on annotated data. Contrastive learning methods, in particular, have emerged as prominent approaches. These works typically utilize a spatial-temporal backbone to extract features from sequences contrast the feature space. Yet, they often rely average pooling temporal aggregation, neglecting intricate higher-order dynamics of sequences. In this work, we introduce Koopman Temporal Learning...

The sex ratio of the sea lamprey(Petromyzon marinus) is influenced by population density. A corrected model and a ecosystem stability were established based on logistic model. In these models, growth rate (r) ratio, deviation degree from environment carrying capacity (K) at different scenarios quantified. Using dynamic its effect are simulated. male dominant lamprey populations exhibit decreasing trends. decreases with increase ratio.

The land surface temperature/vegetation index feature space has important application in quantitative soil remote sensing inversion and drought monitoring, water resources management, such as content, evapotranspiration.However, the study of its construction method is still relatively lacking.In this study, we take Oklahoma state United States an example, fitting dry wet edges carried out, linear index, logarithm, polynomial, power functions are used to fit edges, respectively, results were...

We consider the problem of intelligent and efficient task allocation mechanism in large-scale mobile edge computing (MEC), which can reduce delay energy consumption a parallel distributed optimization. In this paper, we study joint optimization model to cooperative management among terminals (MT), macro cell base station (MBS), multiple small (SBS) for MEC applications. propose multi-block Alternating Direction Method Multipliers (ADMM) based method both requirements low system formulates...

In the paper, based on technology of remote sensing and geographic information system, according to Landsat TM images obtained land use database surface temperature Yancheng city in year 2000 2009. Five types were identified, namely: farmland, building site, forest grassland, water, beach wetland. And then analysis urban expansion model Defense Meteorological satellite data. The results show that: (1) five kinds types, largest rate change is wetland, which -8.23, followed by water as -5.17,...

A binuclear cobalt(II) complex, [Co2(H2O)4(3-PBIM)4(1,3-BDC)2]·2H2O (1,3-H2BDC = 1,3-benzenedicarboxylic acid, 3-PBIM 2-(3-pyridyl)benzimidazole), has been synthesized and characterized by elemental analysis, IR single-crystal X-ray diffraction. The crystallographically independent cobalt atom is coordinated four oxygen two nitrogen donors in an octahedron geometry ([CoN2O4]). Two coordination units ([CoN2O4]) are linked together via carboxyl atoms of 1,3-BDC2− ligands, forming a dimetal...

We consider the problem of intelligent and efficient resource management framework in mobile edge computing (MEC), which can reduce delay energy consumption, featuring distributed optimization congestion avoidance mechanism. In this paper, we present a Cooperative Learning for MEC from an Alternating Direction Method Multipliers (ADMM) perspective, called CL-ADMM framework. First, order to caching task efficiently group, novel popularity estimating scheme is proposed, based on semi-Markov...