1,116 research outputs found
Adverse childhood experiences and deviant peer affiliation among Chinese delinquent adolescents: the role of relative deprivation and age
BackgroundDeviant peer affiliation is considered a potential risk factor for adolescent delinquency. Due to the serious situation of adolescent delinquency in China, it is necessary to investigate the mechanisms by which adolescents associate with deviant peers.ObjectivesThe purpose of this study was to examine the association between adverse childhood experiences (ACEs) and deviant peer affiliation, the mediating effect of relative deprivation, and the moderating effect of age in a sample of Chinese delinquent adolescents.MethodsFive hundred and forty-two Special School students aged 11–18 years were interviewed and completed questionnaires, including demographics, adverse childhood experiences, deviant peer affiliation, and relative deprivation.Results(1) After controlling for gender, adverse childhood experiences and deviant peer affiliation were significantly and positively associated among delinquent adolescents. (2) The effect of ACEs on deviant peer affiliation was mediated by relative deprivation. (3) Age played a moderating role not only in the relationship between ACEs and relative deprivation, but also in the indirect relationship in which ACEs influence deviant peer affiliation through relative deprivation; specifically, the indirect effect of ACEs influencing deviant peer affiliation through relative deprivation was stronger in early adolescence compared with late adolescence.ConclusionOverall, early ACEs play an important role in deviant peer affiliation among delinquent adolescents and relative deprivation is an important mediating variable. The results of the present study emphasize the importance of cognitive interventions for delinquent adolescents who experience ACEs in early adolescence, which may be instructive for the prevention of adolescent delinquency
Development of Digital Education in the Age of Digital Transformation: Citing China’s Practice in Smart Education as a Case Study
Digital education has been catalyzing educational transition, transforming the educational views and instructional techniques while also providing opportunities for high-quality educational development. This is a subject that all nations throughout the world are concerned about. The worldwide practice of integrating digital technologies in teaching has yielded positive results. The Global Digital Education Conference, which was held in Beijing, China, in 2023, called for global collaboration on digital education development. This paper sought to illustrate the significance of digital education for educational reform and to investigate ways for digital education development in this context, using China’s smart education practice as evidence
Neural Inheritance Relation Guided One-Shot Layer Assignment Search
Layer assignment is seldom picked out as an independent research topic in
neural architecture search. In this paper, for the first time, we
systematically investigate the impact of different layer assignments to the
network performance by building an architecture dataset of layer assignment on
CIFAR-100. Through analyzing this dataset, we discover a neural inheritance
relation among the networks with different layer assignments, that is, the
optimal layer assignments for deeper networks always inherit from those for
shallow networks. Inspired by this neural inheritance relation, we propose an
efficient one-shot layer assignment search approach via inherited sampling.
Specifically, the optimal layer assignment searched in the shallow network can
be provided as a strong sampling priori to train and search the deeper ones in
supernet, which extremely reduces the network search space. Comprehensive
experiments carried out on CIFAR-100 illustrate the efficiency of our proposed
method. Our search results are strongly consistent with the optimal ones
directly selected from the architecture dataset. To further confirm the
generalization of our proposed method, we also conduct experiments on
Tiny-ImageNet and ImageNet. Our searched results are remarkably superior to the
handcrafted ones under the unchanged computational budgets. The neural
inheritance relation discovered in this paper can provide insights to the
universal neural architecture search.Comment: AAAI202
2-(Methoxymethyl)adamantan-2-yl 2-methylacrylate
The title compound, C16H24O3, has a cage-type molecular structure and is of interest with respect to its photochemical properties. The structure displays non-classical intermolecular C—H⋯O hydrogen bonding, which links the molecules into a three-dimensional network
Thermal Performance Improvement of Prefab Houses by Covering Retro-reflective Materials
AbstractOwing to the small thermal inertia of prefab houses, indoor thermal environment is poor and occupants are tormented especially under the high solar radiation. Retro-reflective materials can make it a reasonable choice to decrease radiation heat gain due to their high reflectivity for solar radiation. Comparative results show that the indoor air temperature of the prefab house by covering retro-reflectivity materials can reduce by more than 7°C, while the reduced value is close to 10°C for the peak radiant temperature and 7°C for indoor average radiant temperature. It shows retro-reflective materials have a significant effect on thermal performance improvement of prefab houses. Through the comparative study of different walls, it is found that the top, south and east walls are the better choices and that the north wall is the worst one to cover retro-reflectivity materials
Comparative Study of In-situ Test and Laboratory Test on Material Reflectivity
AbstractThis paper gives the theory algorithm of material reflectivity, and works out the in-situ material reflectivity combined with in-situ conditions, researches the influence rules of material's reflectivity under practical solar radiation intensity, and the feasibility of this simple in-situ test method is researched by the comparison of in-situ test result and laboratory test result
Scalable colored sub-ambient radiative coolers based on a polymer-Tamm photonic structure
Daytime radiative coolers cool objects below the air temperature without any
electricity input, while most of them are limited by a silvery or whitish
appearance. Colored daytime radiative coolers (CDRCs) with diverse colors,
scalable manufacture, and sub-ambient cooling have not been achieved. We
introduce a polymer-Tamm photonic structure to enable a high infrared emittance
and an engineered absorbed solar irradiance, governed by the quality factor
(Q-factor). We theoretically determine the theoretical thresholds for
sub-ambient cooling through yellow, magenta, and cyan CDRCs. We experimentally
fabricate and observe a temperature drop of 2.6-8.8 degrees Celsius on average
during daytime and 4.0-4.4degrees Celsius during nighttime. Furthermore, we
demonstrate a scalable-manufactured magenta CDRC with a width of 60 cm and a
length of 500 cm by a roll-to-roll deposition technique. This work provides
guidelines for large-scale CDRCs and offers unprecedented opportunities for
potential applications with energy-saving, aesthetic, and visual comfort
demands
Evaluation of data-driven NARX model based compensation for multi-axial real-time hybrid simulation benchmark study
Actuator control takes a pivotal role in achieving stability and accuracy, particularly in the context of multi-axial real-time hybrid simulation (maRTHS). In maRTHS, multiple hydraulic actuators are necessitated to apply precise motions to experimental substructures thus necessitating the application of multiple-input multiple-output (MIMO)control strategies. This study evaluates the data-driven nonlinear autoregressive with external input (NARX) based compensation for the servo-hydraulic dynamics within the maRTHS benchmark model. Different from previous study, nonlinear terms are incorporated into the NARX model. Online least square and ridge regression techniques are utilized to estimate the model coefficients to achieve optimal compensation. The influence of various model order and window length is assessed for the NARX model-based compensation. The findings of this research demonstrate that NARX-based compensation has significant potential not only in facilitating precise actuator control for maRTHS but also in enabling robust control in the presence of unknown uncertainties inherent to the servo-hydraulic system
Bidirectional causality between immunoglobulin G N-glycosylation and metabolic traits: A mendelian randomization study
Although the association between immunoglobulin G (IgG) N-glycosylation and metabolic traits has been previously identified, the causal association between them remains unclear. In this work, we used Mendelian randomization (MR) analysis to integrate genome-wide association studies (GWASs) and quantitative trait loci (QTLs) data in order to investigate the bidirectional causal association of IgG N-glycosylation with metabolic traits. In the forward MR analysis, 59 (including nine putatively causal glycan peaks (GPs) for body mass index (BMI) (GP1, GP6, etc.) and seven for fasting plasma glucose (FPG) (GP1, GP5, etc.)) and 15 (including five putatively causal GPs for BMI (GP2, GP11, etc.) and four for FPG (GP1, GP10, etc.)) genetically determined IgG N-glycans were identified as being associated with metabolic traits in one- and two-sample MR studies, respectively, by integrating IgG N-glycan-QTL variants with GWAS results for metabolic traits (all P \u3c 0.05). Accordingly, in the reverse MR analysis of the integrated metabolic-QTL variants with the GWAS results for IgG N-glycosylation traits, 72 (including one putatively causal metabolic trait for GP1 (high-density lipoprotein cholesterol (HDL-C)) and five for GP2 (FPG, systolic blood pressure (SBP), etc.)) and four (including one putatively causal metabolic trait for GP3 (HDL-C) and one for GP9 (HDL-C)) genetically determined metabolic traits were found to be related to the risk of IgG N-glycosylation in one- and two-sample MR studies, respectively (all P \u3c 0.05). Notably, genetically determined associations of GP11 BMI (fixed-effects model-Beta with standard error (SE): 0.106 (0.034) and 0.010 (0.005)) and HDL-C GP9 (fixed-effects model-Beta with SE: –0.071 (0.022) and –0.306 (0.151)) were identified in both the one- and two-sample MR settings, which were further confirmed by a meta-analysis combining the one- and two-sample MR results (fixed-effects model-Beta with 95% confidence interval (95% CI): 0.0109 (0.0012, 0.0207) and –0.0759 (–0.1186, –0.0332), respectively). In conclusion, the comprehensively bidirectional MR analyses provide suggestive evidence of bidirectional causality between IgG N-glycosylation and metabolic traits, possibly revealing a new richness in the biological mechanism between IgG N-glycosylation and metabolic traits. © 2022 THE AUTHOR
Attention Diversification for Domain Generalization
Convolutional neural networks (CNNs) have demonstrated gratifying results at
learning discriminative features. However, when applied to unseen domains,
state-of-the-art models are usually prone to errors due to domain shift. After
investigating this issue from the perspective of shortcut learning, we find the
devils lie in the fact that models trained on different domains merely bias to
different domain-specific features yet overlook diverse task-related features.
Under this guidance, a novel Attention Diversification framework is proposed,
in which Intra-Model and Inter-Model Attention Diversification Regularization
are collaborated to reassign appropriate attention to diverse task-related
features. Briefly, Intra-Model Attention Diversification Regularization is
equipped on the high-level feature maps to achieve in-channel discrimination
and cross-channel diversification via forcing different channels to pay their
most salient attention to different spatial locations. Besides, Inter-Model
Attention Diversification Regularization is proposed to further provide
task-related attention diversification and domain-related attention
suppression, which is a paradigm of "simulate, divide and assemble": simulate
domain shift via exploiting multiple domain-specific models, divide attention
maps into task-related and domain-related groups, and assemble them within each
group respectively to execute regularization. Extensive experiments and
analyses are conducted on various benchmarks to demonstrate that our method
achieves state-of-the-art performance over other competing methods. Code is
available at https://github.com/hikvision-research/DomainGeneralization.Comment: ECCV 2022. Code available at
https://github.com/hikvision-research/DomainGeneralizatio
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