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Boosting Unsupervised Monocular Depth Estimation with Auxiliary Semantic Information

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China Communications 2021年第6期18卷 228-243页

作者： hui ren Nan Gao Jia Li State Key Laboratory of Media Convergence and Communication、Key Laboratory of Acoustic Visual Technology and Intelligent Control System Ministry of Culture and Tourism(Communication University of China)、Beijing Key Laboratory of Modern Entertainment Technology(Communication University of China)、School of Information and Communication EngineeringCommunication University of China.No.1Dingfuzhuang StreetChaoyang DistrictBeijing100024China

Learning-based multi-task models have been widely used in various scene understanding tasks,and complement each other,i.e.,they allow us to consider prior semantic information to better infer *** boost the unsupervised monocular depth estimation using semantic segmentation as an auxiliary *** address the lack of cross-domain datasets and catastrophic forgetting problems encountered in multi-task training,we utilize existing methodology to obtain redundant segmentation maps to build our cross-domain dataset,which not only provides a new way to conduct multi-task training,but also helps us to evaluate results compared with those of other *** addition,in order to comprehensively use the extracted features of the two tasks in the early perception stage,we use a strategy of sharing weights in the network to fuse cross-domain features,and introduce a novel multi-task loss function to further smooth the depth *** experiments on KITTI and Cityscapes datasets show that our method has achieved state-of-the-art performance in the depth estimation task,as well improved semantic segmentation.

关键词： unsupervised monocular depth estimation semantic segmentation multi-task model

Sensitivity to Stress Concentration of Steel at High Temperature

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Journal of Iron and Steel Research International 2003年第3期10卷 59-63页

作者： XIAO Feng YANG ren-hui Chongqing Institute of Technology

A new experimental method was developed to simulate the generation of the surface transversal crack on the continuous casting slab with a discontinuous sample. A high temperature property of steel named"the sensitivity to the stress concentration of steel at high temperature"was defined to evaluate the effect of stress concentration on thermal plasticity of steel. "The sensitivity parameter to the stress concentration of steel at high temperature"was available to determine the temperature range in which steel is sensitive to the stress concentration.

关键词： stress concentration continuous casting surface crack high temperature property

Software Defined Traffic Engineering for Improving Quality of Service

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China Communications 2017年第10期14卷 12-25页

作者： Xiaoming Li Jinyao Yan hui ren Key Laboratory of Acoustic Visual Technology and Intelligent Control System (Ministry of Culture) and Beijing Key Laboratory of Modern Entertainment Technology Communication University of China Beijing 100024 China Key Lab of Media Audio and Video Communication University of China Beijing 100024 China

The Software Defined Networking(SDN) paradigm separates the control plane from the packet forwarding plane, and provides applications with a centralized view of the distributed network state. Thanks to the flexibility and efficiency of the traffic flow management, SDN based traffic engineering increases network utilization and improves Quality of Service(QoS). In this paper, an SDN based traffic scheduling algorithm called CATS is proposed to detect and control congestions in real time. In particular, a new concept of aggregated elephant flow is presented. And then a traffic scheduling optimization model is formulated with the goal of minimizing the variance of link utilization and improving QoS. We develop a chaos genetic algorithm to solve this NP-hard problem. At the end of this paper, we use Mininet, Floodlight and video traces to simulate the SDN enabled video networking. We simulate both the case of live video streaming in the wide area backbone network and the case of video file transferring among data centers. Simulation results show that the proposed algorithm CATS effectively eliminates network congestions in subsecond. In consequence, CATS improves the QoS with lower packet loss rate and balanced link utilization.

关键词： SDN traffic engineering/traffic scheduling aggregated elephant flow congestion link utilization QoS video streaming

Sepsis biomarkers： an omics perspective

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Frontiers of Medicine 2014年第1期8卷 58-67页

作者： Xiao Liu hui ren Daizhi Peng Institute of Burn Research Southwest Hospital State Key Laboratory of Trauma Burns and Combined Injury Third Military Medical University Chongqing 400038 China School of Nursing Third Military Medical University Chongqing 400038 China

Sepsis is a common cause of death in hospitalized patients worldwide. The early detection of sepsis remains a great challenge for clinicians, and delayed diagnosis frequently undermines treatment efforts, thereby contributing to high mortality. Omics technologies allow high-throughput screening of sepsis biomarkers. This review describes currently available and novel sepsis biomarkers in the context of genomics, transcriptomics, proteomics, and metabolomics. The combination of these technologies can help refine the diagnosis of sepsis. This review paper serves as a reference for future studies that employ an integrated, multi-omics approach to disease identification.

关键词： sepsis biomarker genomics transcriptomics proteomics metabolomics

Block Monotone Iterative Algorithms for Variational Inequalities with Nonlinear Operators

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Acta Mathematicae Applicatae Sinica 2008年第2期24卷 221-232页

作者： Ming-hui ren Jin-ping Zeng Department of Mathematics Hunan University of Arts and Science Changde 415000 China College of Software Dongguan University of Technology Dongguan 511700 China

Some block iterative methods for solving variational inequalities with nonlinear operators are proposed. Monotone convergence of the algorithms is obtained. Some comparison theorems are also established. Compared with the research work in given by Pao in 1995 for nonlinear equations and research work in given by Zeng and Zhou in 2002 for elliptic variational inequalities, the algorithms proposed in this paper are independent of the boundedness of the derivatives of the nonlinear operator.

关键词： Monotone iterative algorithm upper solution lower solution comparison theorem variationalinequality

Optogenetic tools controlled by ultraviolet-B light

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aBIOTECH 2021年第2期2卷 170-175页

作者： Xinhao Ouyang hui ren Xi Huang State Key Laboratory of Cellular Stress Biology School of Life SciencesXiamen UniversityXiamen 361102China

Decades of genetic,molecular and biochemical studies in plants have provided foundational knowledge about light sensory proteins and led to their application in synthetic *** tools take advantage of the light switchable activity of plant photoreceptors to control intracellular signaling *** recent discovery of the UV-B photoreceptor UV RESISTANCE LOCUS 8 in the model plant Arabidopsis thaliana opens up new avenues for light-controllable *** this review,we discuss current developments in optogenetic control by UV-B light and its signaling components,as well as rational considerations in the design and applications of UV-B-based optogenetic tools.

关键词： Optogenetics UV-B light UVR8 COP1

Palladium-catalyzed 3,4-hydroaminocarbonylation of conjugated dienes for formation ofβ,γ-unsaturated amides

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Science China Chemistry 2023年第5期66卷 1474-1481页

作者： hui-Yi Yang Liang-Quan Lin Na-Qi Li Zhi-hui ren Zheng-hui Guan Key Laboratory of Synthetic and Nature Molecule of Ministry of Education Department of Chemistry&Materials ScienceNorthwest UniversityXi’an 710127China

Hydrocarbonylation of conjugated dienes is one of the most promising yet challenging methods for the synthesis of carbonyl ***,we reported the development of an unprecedented palladium-catalyzed branched selective 3,4-hydroaminocarbonylation of 1,3-dienes with CO and amines hydrochloride to affordβ,γ-unsaturated *** reaction employs readily available starting materials(including anilines,amines,amino acids,peptides,aryl-1,3-dienes,alyl-1,3-dienes)and tolerates a wide range of functional groups,thus providing a facile and effective approach to access a diverse array ofα-substitutedβ,γ-unsaturated *** investigations suggested that the hydropalladation of dienes is irreversible,and the insertion of CO into the allyl-Pd species is probably the rate-limiting step.

关键词： palladium-catalyzed carbonylation reaction regioselectivity conjugated diene amides synthesis

The effect of impeller slot jet on centrifugal pump performance

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Journal of Hydrodynamics 2019年第4期31卷 733-739页

作者： ren-hui Zhang Li-chen Yun Jing Li School of Energy and Power Engineering Lanzhou University of Technology Lanzhou 730050China China Key Laboratory of Fluid Machinery and Systems Lanzhou University of Technology Lanzhou 730050 China

To improve the cavitation performance of the centrifugal pump, a new kind of centrifugal pump impeller with slot is proposed. The slot is on the impeller shroud near the suction side of the blade leading edge. So, the fluid with high energy in the impeller front side chamber is drained to the lowest pressure area. The jet flow would compensate the blade inlet flow with a certain energy. With numerical simulations, the pump's inner flows for 5 different slot sizes and their hydraulic performances are compared with those of the prototype pump. The slot jet would result in the increase of the impeller flow rate and the volute area ratio, leading to the head decrease within the whole flow rate range. The slot jet can suppress the reverse flow remarkably at a low flow rate, and the pump efficiency is improved. The slot jet improves the pump cavitation performance effectively, especially at a low flow rate. To some extent, the smaller the slot size is, the better the pump cavitation performance is. The cavitation performance of the slot impeller with a size of 2 mmx 1.75 mm is much better than that of the prototype impeller. Compared with the prototype impeller, the lowest pressure near the slot impeller blade inlet and even the pressure in all forepart regions are improved significantly. The slot impeller is shown to be effective in suppressing the cavitation, and the available net positive suction head is improved.

关键词： Centrifugal pump slot impeller slot jet cavitation performance circulation flow

Fine-Grained Emotion Prediction for Movie and Television scene images

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The Journal of China Universities of Posts and Telecommunications 2024年第3期31卷 43-55页

作者： Su Zhibin Zhou Xuanye Liu Bing ren hui State Key Laboratory of Media Convergence and Communication Communication University of ChinaBeijing 100024China Key Laboratory of Acoustic Visual Technology and Intelligent Control System Communication University of ChinaBeijing 100024China School of Information and Communication Engineering Communication University of ChinaBeijing 100024China

For the task of content retrieval,analysis and generation of film and television scene images in the field of intelligent editing,fine-grained emotion recognition and prediction of images is of great *** this paper,the fusion of traditional perceptual features,art features and multi-channel deep learning features are used to reflect the emotion expression of different levels of the *** addition,the integrated learning model with stacking architecture based on linear regression coefficient and sentiment correlations,which is called the LS-stacking model,is proposed according to the factor association between multi-dimensional *** experimental results prove that the mixed feature and LS-stacking model can predict well on the 16 emotion categories of the self-built image *** study improves the fine-grained recognition ability of image emotion by computers,which helps to increase the intelligence and automation degree of visual retrieval and post-production system.

关键词： fine-grained emotion prediction movie and television scene images stacking model linear regression