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EFECL:Feature encoding enhancement with contrastive learning for indoor 3D object detection

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Computational Visual Media 2023年第4期9卷 875-892页

作者： yao duan Renjiao Yi Yuanming Gao Kai Xu Chenyang Zhu School of Computing National University of Defense TechnologyChangsha 410000China

Good proposal initials are critical for 3D object detection ***,due to the significant geometry variation of indoor scenes,incomplete and noisy proposals are inevitable in most *** feature information among these“bad”proposals may mislead the *** learning provides a feasible way for representing proposals,which can align complete and incomplete/noisy proposals in feature *** aligned feature space can help us build robust 3D representation even if bad proposals are ***,we devise a new contrast learning framework for indoor 3D object detection,called EFECL,that learns robust 3D representations by contrastive learning of proposals on two different ***,we optimize both instance-level and category-level contrasts to align features by capturing instance-specific characteristics and semantic-aware common ***,we propose an enhanced feature aggregation module to extract more general and informative features for contrastive *** on ScanNet V2 and SUN RGB-D benchmarks demonstrate the generalizability and effectiveness of our method,and our method can achieve 12.3%and 7.3%improvements on both datasets over the benchmark *** code and models are publicly available at https://***/Yaraduan/EFECL.

关键词： indoor scene object detection contrastive learning feature enhancement

ARM3D:Attention-based relation module for indoor 3D object detection

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Computational Visual Media 2022年第3期8卷 395-414页

作者： Yuqing Lan yao duan Chenyi Liu Chenyang Zhu Yueshan Xiong Hui Huang Kai Xu College of Computer National University of Defense TechnologyChangsha 410073China Shenzhen University Shenzhen 518061China

Relation contexts have been proved to be useful for many challenging vision *** the field of3D object detection,previous methods have been taking the advantage of context encoding,graph embedding,or explicit relation reasoning to extract relation ***,there exist inevitably redundant relation contexts due to noisy or low-quality *** fact,invalid relation contexts usually indicate underlying scene misunderstanding and ambiguity,which may,on the contrary,reduce the performance in complex *** by recent attention mechanism like Transformer,we propose a novel 3D attention-based relation module(ARM3D).It encompasses objectaware relation reasoning to extract pair-wise relation contexts among qualified proposals and an attention module to distribute attention weights towards different relation *** this way,ARM3D can take full advantage of the useful relation contexts and filter those less relevant or even confusing contexts,which mitigates the ambiguity in *** have evaluated the effectiveness of ARM3D by plugging it into several state-of-the-art 3D object detectors and showing more accurate and robust detection *** experiments show the capability and generalization of ARM3D on 3D object *** source code is available at https://***/lanlan96/ARM3D.

关键词： attention mechanism scene understanding relational reasoning 3D indoor object detection

Nodulin 26-like intrinsic protein Cs NIP2;2 is a silicon influx transporter in Cucumis sativus L.

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Journal of Integrative Agriculture 2022年第3期21卷 685-696页

作者： duan yao-ke SU Yan HAN Rong SUN Hao GONG Hai-jun Shaanxi Engineering Research Center for Vegetables/College of Horticulture Northwest A&F UniversityYangling 712100P.R.China Henan Key Laboratory of Ion-Beam Bioengineering School of Agricultural SciencesZhengzhou UniversityZhengzhou 450000P.R.China

Nodulin 26-like intrinsic proteins(NIPs) are a family of channel-forming transmembrane proteins that function in the transport of water and other small *** NIPs can mediate silicon transport across plasma membranes and lead to silicon accumulation in plants,which is beneficial for the growth and development of *** is one of the most widely consumed vegetables;however,the functions of NIPs in this crop are still largely ***,we report the functional characteristics of Cs NIP2;*** was found that Cs NIP2;2 is a tandem repeat of Cs NIP2;1,which had been demonstrated to be a silicon influx transporter *** NIP2;2 has a selectivity filter composed of cysteine,serine,glycine and arginine(CSGR),which is different from all previously characterized silicon influx transporters in higher plants at the second helix *** laevis oocytes injected with Cs NIP2;2 c RNA demonstrated a higher uptake of silicon than the control,and the uptake remained unchanged under low *** NIP2;2 was found to be expressed in the root,stem,lamina and petiole,and exogenous silicon treatment decreased its expression in the stem but not in other *** expression of Cs NIP2;2-e GFP fusion sequence in onion epidermal cells showed that Cs NIP2;2 was localized to the cell nucleus,plasma membrane and an unknown structure inside the *** results suggest that Cs NIP2;2 is a silicon influx transporter in cucumber,and its subcellular localization and the selectivity filter are different from those of the previously characterized silicon influx transporters in other *** findings may be helpful for understanding the functions of NIPs in cucumber plants.

关键词： cucumber(Cucumis sativus L.) nodulin 26-like intrinsic membrane protein(NIP) silicon influx transporter aromatic/arginine selectivity filter

Physical and Electrochemical Properties of Doped LiFePO4 as Cathode Material for Lithium-Ion Batteries

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Journal of Rare Earths 2004年第z2期22卷 123-125页

作者： yao Yongxun duan Zhenzhong Li Yuenan Gu Hongwei Hua Zhiqiang Luan Wenzhou Wang Yuan Research Center of Superconducting Materials General Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China

LiFePO4 cathode material was synthesized by a solid-state reaction using doping several elements (Nb5 + ,Zr4 + ). The starting materials were mixed with a high-efficient sander and treated thermally under flowing N2. The samples were characterized by X-ray diffraction (XRD), field-emission gun electron microscopy (FEG), and their electrochemical performance was investigated in the term of cycling behavior. Room temperature discharge capacity about 140.6 mA·h·g-1 was obtained at C/5 rate.

关键词： Lithium-ion batteries LiFePO4 cathode material discharge capacity

Solution of Cauchy's Problem for Wave Equations in Higher Space Dimensions by Means of D'Alembert's Formula

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Wuhan University Journal of Natural Sciences 2000年第2期5卷 169-174页

作者： yao duan-zheng Song Ke-hui Xiong Gui-guang Wuhan University Department of Physics Wuhan China (GRID:grid.49470.3e) (ISNI:***) Beijing institute of Technology Department of Physics Beijing China (GRID:grid.43555.32) (ISNI:***)

A simple method for solving Cauchy’s problem of wave equations in higher space dimensions with initial condition of separated variables, has been given by using D’Alembert’s formula and some examples have been shown.

关键词： Cauchy’s problem wave equation D’Alembert’s formula

Privacy Cost Analysis and Privacy Protection Based on Big Data

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Journal of Donghua University(English Edition) 2019年第1期36卷 96-105页

作者： ZHOU Qiang YUE Kaixu duan yao School of Management and Engineering Anhui Polytechnic University

A comprehensive analysis of the impact privacy incidents on its market value is given.A broad set of instances of the exposure of personal information from a summary of some security mechanisms and the corresponding results are presented. The cumulative effect increases in magnitude over day following the breach announcement, but then decreases. Besides, a new privacy protection property, that is, p-sensitive k-anonymity is presented in this paper to protect against identity disclosure. We illustrated the inclusion of the two necessary conditions in the algorithm for computing a p-k-minimal generalization. Algorithms such as k-anonymity and l-diversity remain all sensitive attributes intact and apply generalization and suppression to the quasi-identifiers. This will keep the data "truthful" and provide good utility for data-mining applications, while achieving less perfect privacy. We aim to get the problem based on the prior analysis, and study the issue of privacy protection from the perspective of the model-benefit.

关键词： privacy security economics privacy protection big data

Evaluation of Some Fourier Integrals in N-Dimensional Space for the Theory of Dislocations in Quasicrystals

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 787-790页

作者： yao duan-zheng Ding Di-hua Wang Ren-hui Hu Cheng-zheng School of Physics and Technology Wuhan University Wuhan 430072 China

A method to evaluate some Fourier integrals is extended from two-dimensional (2-D) and three dimensional (3-D) spaces ton-dimensional (n-D) space, which are often used in the elasticity theory of dislocations in quasi... 详细信息

关键词： quasicrystals dislocation Fourier integral elasticity theory

Transcriptional search to identify and assess reference genes for expression analysis in Solanum lycopersicum under stress and hormone treatment conditions

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Journal of Integrative Agriculture 2022年第11期21卷 3216-3229页

作者： duan yao-ke HAN Rong SU Yan WANG Ai-ying LI Shuang SUN Hao GONG Hai-jun Shaanxi Engineering Research Center for Vegetables/College of Horticulture Northwest A&F UniversityYangling 712100ShaanxiP.R.China Henan Key Laboratory of Ion-Beam Bioengineering College of Agricultural SciencesZhengzhou UniversityZhengzhou 450000HenanP.R.China

Tomato(Solanum lycopersicum)is a model plant for research on fruit development and stress response,in which gene expression analysis is frequently *** PCR(qPCR)is a widely used technique for gene expression analysis,and the selection of reference genes may affect the accuracy of results and even *** there have been some frequently used reference genes in tomato,it has been shown that the expressions of some of these genes are not constant in different tissues and environmental ***,little information on genomic identification of reference genes is available in ***,we mined the publicly available transcriptional sequencing data and screened out fifteen candidate reference genes,and the expression stability of these candidate genes and seven traditionally used ones were evaluated under stress and hormone *** results showed that over half of the selected candidate references were housekeeping genes in tomato *** the candidate reference genes and the traditionally used ones,the most stably expressed genes varied under different treatments,and most of these genes were recommended as preferred reference genes at least once except Solyc04g009030 and Solyc07g066610,two traditionally used reference *** study provides some novel reference genes in tomato,and the preferred reference genes under different environmental stimuli,which may be useful for future *** study suggests that excavating stably expressed genes from transcriptome sequencing data is a reliable approach to screening reference genes for qPCR analysis.

关键词： tomato(Solanum lycopersicum) gene expression qPCR reference gene expression stability

Single-cavity bi-color laser enabled by optical anti-parity-time symmetry

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Photonics Research 2021年第7期9卷 1280-1288页

作者： yao duan XINGWANG ZHANG YIMIN DING XINGJIE NI Department of Electrical Engineering The Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA

The exploration of quantum inspired symmetries in optical systems has spawned promising physics and provided fertile ground for developing devices exhibiting exotic functionalities. Founded on the anti-parity–time (APT)symmetry that is enabled by both spatial and temporal interplay between gain and loss,we demonstrate theoretically and numerically bi-color lasing in a single micro-ring resonator with spatiotemporal modulation along its azimuthal direction. In contrast to conventional multi-mode lasers that have mixed-frequency output,our laser exhibits stable,demultiplexed,tunable bi-color emission at different output ports. Our APT-symmetry-based laser may point out a new route for realizing compact on-chip coherent multi-color light sources.

关键词： laser optical resonator