94 results on '"Changbin Yu"'
Search Results
2. MRMPro: a web-based tool to improve the speed of manual calibration for multiple reaction monitoring data analysis by mass spectrometry
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Ruimin Wang, Hengxuan Jiang, Miaoshan Lu, Junjie Tong, Shaowei An, Jinyin Wang, and Changbin Yu
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MRMPro ,MRM ,Mass spectrometry ,Batch inspection ,Web service ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background As a gold-standard quantitative technique based on mass spectrometry, multiple reaction monitoring (MRM) has been widely used in proteomics and metabolomics. In the analysis of MRM data, as no peak picking algorithm can achieve perfect accuracy, manual inspection is necessary to correct the errors. In large cohort analysis scenarios, the time required for manual inspection is often considerable. Apart from the commercial software that comes with mass spectrometers, the open-source and free software Skyline is the most popular software for quantitative omics. However, this software is not optimized for manual inspection of hundreds of samples, the interactive experience also needs to be improved. Results Here we introduce MRMPro, a web-based MRM data analysis platform for efficient manual inspection. MRMPro supports data analysis of MRM and schedule MRM data acquired by mass spectrometers of mainstream vendors. With the goal of improving the speed of manual inspection, we implemented a collaborative review system based on cloud architecture, allowing multiple users to review through browsers. To reduce bandwidth usage and improve data retrieval speed, we proposed a MRM data compression algorithm, which reduced data volume by more than 60% and 80% respectively compared to vendor and mzML format. To improve the efficiency of manual inspection, we proposed a retention time drift estimation algorithm based on similarity of chromatograms. The estimated retention time drifts were then used for peak alignment and automatic EIC grouping. Compared with Skyline, MRMPro has higher quantification accuracy and better manual inspection support. Conclusions In this study, we proposed MRMPro to improve the usability of manual calibration for MRM data analysis. MRMPro is free for non-commercial use. Researchers can access MRMPro through http://mrmpro.csibio.com/ . All major mass spectrometry formats (wiff, raw, mzML, etc.) can be analyzed on the platform. The final identification results can be exported to a common.xlsx format for subsequent analysis.
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- 2024
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3. Injectiondesign: web service of plate design with optimized stratified block randomization for modern GC/LC-MS-based sample preparation
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Miaoshan Lu, Hengxuan Jiang, Ruimin Wang, Shaowei An, Jiawei Wang, and Changbin Yu
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InjectionDesign ,Plate design ,Mass spectrometry ,Block randomization ,Stratified balancing ,Metabolomics ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background Plate design is a necessary and time-consuming operation for GC/LC-MS-based sample preparation. The implementation of the inter-batch balancing algorithm and the intra-batch randomization algorithm can have a significant impact on the final results. For researchers without programming skills, a stable and efficient online service for plate design is necessary. Results Here we describe InjectionDesign, a free online plate design service focused on GC/LC-MS-based multi-omics experiment design. It offers the ability to separate the position design from the sequence design, making the output more compatible with the requirements of a modern mass spectrometer-based laboratory. In addition, it has implemented an optimized block randomization algorithm, which can be better applied to sample stratification with block randomization for an unbalanced distribution. It is easy to use, with built-in support for common instrument models and quick export to a worksheet. Conclusions InjectionDesign is an open-source project based on Java. Researchers can get the source code for the project from Github: https://github.com/CSi-Studio/InjectionDesign . A free web service is also provided: http://www.injection.design .
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- 2023
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4. G-Aligner: a graph-based feature alignment method for untargeted LC–MS-based metabolomics
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Ruimin Wang, Miaoshan Lu, Shaowei An, Jinyin Wang, and Changbin Yu
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LC–MS ,Feature alignment ,Multidimensional assignment problem ,Combinatorial optimization ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background Liquid chromatography–mass spectrometry is widely used in untargeted metabolomics for composition profiling. In multi-run analysis scenarios, features of each run are aligned into consensus features by feature alignment algorithms to observe the intensity variations across runs. However, most of the existing feature alignment methods focus more on accurate retention time correction, while underestimating the importance of feature matching. None of the existing methods can comprehensively consider feature correspondences among all runs and achieve optimal matching. Results To comprehensively analyze feature correspondences among runs, we propose G-Aligner, a graph-based feature alignment method for untargeted LC–MS data. In the feature matching stage, G-Aligner treats features and potential correspondences as nodes and edges in a multipartite graph, considers the multi-run feature matching problem an unbalanced multidimensional assignment problem, and provides three combinatorial optimization algorithms to find optimal matching solutions. In comparison with the feature alignment methods in OpenMS, MZmine2 and XCMS on three public metabolomics benchmark datasets, G-Aligner achieved the best feature alignment performance on all the three datasets with up to 9.8% and 26.6% increase in accurately aligned features and analytes, and helped all comparison software obtain more accurate results on their self-extracted features by integrating G-Aligner to their analysis workflow. G-Aligner is open-source and freely available at https://github.com/CSi-Studio/G-Aligner under a permissive license. Benchmark datasets, manual annotation results, evaluation methods and results are available at https://doi.org/10.5281/zenodo.8313034 Conclusions In this study, we proposed G-Aligner to improve feature matching accuracy for untargeted metabolomics LC–MS data. G-Aligner comprehensively considered potential feature correspondences between all runs, converting the feature matching problem as a multidimensional assignment problem (MAP). In evaluations on three public metabolomics benchmark datasets, G-Aligner achieved the highest alignment accuracy on manual annotated and popular software extracted features, proving the effectiveness and robustness of the algorithm.
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- 2023
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5. Column storage enables edge computation of biological big data on 5G network
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Miaoshan Lu, Junjie Tong, Weidong Fang, Jinyin Wang, Shaowei An, Ruimin Wang, Hengxuan Jiang, and Changbin Yu
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column storage ,edge computing ,mass spectrum ,aird-slice ,data compression ,Biotechnology ,TP248.13-248.65 ,Mathematics ,QA1-939 - Abstract
With the continuous improvement of biological detection technology, the scale of biological data is also increasing, which overloads the central-computing server. The use of edge computing in 5G networks can provide higher processing performance for large biological data analysis, reduce bandwidth consumption and improve data security. Appropriate data compression and reading strategy becomes the key technology to implement edge computing. We introduce the column storage strategy into mass spectrum data so that part of the analysis scenario can be completed by edge computing. Data produced by mass spectrometry is a typical biological big data based. A blood sample analysed by mass spectrometry can produce a 10 gigabytes digital file. By introducing the column storage strategy and combining the related prior knowledge of mass spectrometry, the structure of the mass spectrum data is reorganized, and the result file is effectively compressed. Data can be processed immediately near the scientific instrument, reducing the bandwidth requirements and the pressure of the central server. Here, we present Aird-Slice, a mass spectrum data format using the column storage strategy. Aird-Slice reduces volume by 48% compared to vendor files and speeds up the critical computational step of ion chromatography extraction by an average of 116 times over the test dataset. Aird-Slice provides the ability to analyze biological data using an edge computing architecture on 5G networks.
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- 2023
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6. Effects of calcium glycerophosphate concentration on micro-arc oxidation coating of Mg alloy
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Wenshuo Xu, Zhou Li, Hongwei Wang, Huancai Li, Chuanzhong Chen, Xuchang Liu, Mingjie Kuang, Jinhe Dou, and Changbin Yu
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Magnesium alloys ,Micro-arc oxidation ,CaP ,Coating ,Bioactivity ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Due to its good biocompatibility and compatible hardness with human bones, magnesium (Mg) alloy is considered as a promising material for bone nails and implants. However, Mg and its alloys are characteristics of active chemical properties and high corrosion rate, which is detrimental to the recovery of patients implanted with Mg alloy bone scaffold. In the present work, to retard the corrosion of the Mg alloy, calcium glycerophosphate (C3H7CaO6P•H2O) was added in the electrolyte to form the micro-arc oxidation (MAO) coatings. Various experimental techniques such as XRD, SEM and EDS have been used to characterize the surface morphology and phase composition of MAO coatings. MAO coatings of different CaP content were studied to explore the synergetic effect between the biocompatibility and corrosive properties by means of electrochemical measurements, hemolysis and pyrogen test. The results showed that higher CaP content can improve the biocompatibility and corrosion resistance while decelerating the hemolysis rate.
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- 2023
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7. StackZDPD: a novel encoding scheme for mass spectrometry data optimized for speed and compression ratio
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Jinyin Wang, Miaoshan Lu, Ruiming Wang, Shaowei An, Cong Xie, and Changbin Yu
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Medicine ,Science - Abstract
Abstract As the pervasive, standardized format for interchange and deposition of raw mass spectrometry (MS) proteomics and metabolomics data, text-based mzML is inefficiently utilized on various analysis platforms due to its sheer volume of samples and limited read/write speed. Most research on compression algorithms rarely provides flexible random file reading scheme. Database-developed solution guarantees the efficiency of random file reading, but nevertheless the efforts in compression and third-party software support are insufficient. Under the premise of ensuring the efficiency of decompression, we propose an encoding scheme “Stack-ZDPD” that is optimized for storage of raw MS data, designed for the format “Aird”, a computation-oriented format with fast accessing and decoding time, where the core compression algorithm is “ZDPD”. Stack-ZDPD reduces the volume of data stored in mzML format by around 80% or more, depending on the data acquisition pattern, and the compression ratio is approximately 30% compared to ZDPD for data generated using Time of Flight technology. Our approach is available on AirdPro, for file conversion and the Java-API Aird-SDK, for data parsing.
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- 2022
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8. Aird: a computation-oriented mass spectrometry data format enables a higher compression ratio and less decoding time
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Miaoshan Lu, Shaowei An, Ruimin Wang, Jinyin Wang, and Changbin Yu
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Mass spectrometry ,Aird ,Compressor ,ZDPD ,DIA ,DDA ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background With the precision of the mass spectrometry (MS) going higher, the MS file size increases rapidly. Beyond the widely-used open format mzML, near-lossless or lossless compression algorithms and formats emerged in scenarios with different precision requirements. The data precision is often related to the instrument and subsequent processing algorithms. Unlike storage-oriented formats, which focus more on lossless compression rate, computation-oriented formats concentrate as much on decoding speed as the compression rate. Results Here we introduce “Aird”, an opensource and computation-oriented format with controllable precision, flexible indexing strategies, and high compression rate. Aird provides a novel compressor called Zlib-Diff-PforDelta (ZDPD) for m/z data. Compared with Zlib only, m/z data size is about 55% lower in Aird average. With the high-speed decoding and encoding performance of the single instruction multiple data technology used in the ZDPD, Aird merely takes 33% decoding time compared with Zlib. We have downloaded seven datasets from ProteomeXchange and Metabolights. They are from different SCIEX, Thermo, and Agilent instruments. Then we convert the raw data into mzML, mgf, and mz5 file formats by MSConvert and compare them with Aird format. Aird uses JavaScript Object Notation for metadata storage. Aird-SDK is written in Java, and AirdPro is a GUI client for vendor file converting written in C#. They are freely available at https://github.com/CSi-Studio/Aird-SDK and https://github.com/CSi-Studio/AirdPro . Conclusions With the innovation of MS acquisition mode, MS data characteristics are also constantly changing. New data features can bring more effective compression methods and new index modes to achieve high search performance. The MS data storage mode will also become professional and customized. ZDPD uses multiple MS digital features, and researchers also can use it in other formats like mzML. Aird is designed to become a computing-oriented data format with high scalability, compression rate, and fast decoding speed.
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- 2022
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9. Spatial Distribution Characteristics and Influencing Factors on the Retail Industry in the Central Urban Area of Lanzhou City at the Scale of Daily Living Circles
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Chenyu Lu, Changbin Yu, Yu Xin, and Wendi Zhang
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retail industry ,spatial distribution ,influencing factors ,daily living circles ,Lanzhou ,Geography (General) ,G1-922 - Abstract
Using a people-centered approach to new urbanization, China has committed to building high-quality living environments through improving urban livability and promoting a stronger sense of belonging among residents. Retail stores serve as one of the most immediate and accessible destinations for residents’ consumption, and their spatial configuration has a direct impact on residents’ satisfaction and happiness in their daily lives. In this context, for the present study we selected the central urban area of Lanzhou City as the case study area. Based on POI data and using the daily life circle as the basic unit, we applied methods such as kernel density analysis, hotspot analysis, and the Shannon–Weaver index to analyze spatial distribution patterns of the retail industry. Furthermore, we applied Geodetector to analyze the impacts of four factors that are closely related to the retail industry: economic level, convenience level, market demand, and location. The conclusions are as follows: In the central urban area of Lanzhou, the retail industry exhibits a belt distribution pattern along the Yellow River. The density of distribution gradually decreases from the city center toward the outskirts, forming four prominent agglomeration centers. Overall, within the central urban area of Lanzhou, the spatial distribution of the retail industry at the scale of daily living circles shows that only a small proportion of the industry demonstrates noticeable clustering effects. In terms of spatial patterns, the retail industry at the scale of the daily living circles demonstrates similar characteristics in terms of diversity and agglomeration distribution. It exhibits a decreasing trend from the urban core toward the peripheral areas. The agglomeration distribution pattern of the retail industry in the central urban area of Lanzhou is considerably influenced by market demand, economic level, convenience, and location. The spatial distribution of the retail industry in the central urban area is primarily influenced by economic factors and convenience, while market demand plays a major role and location has a relatively minimal impact.
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- 2023
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10. Global asymptotic stability of a general biased min‐consensus protocol
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Yuanqiu Mo, Lanlin Yu, and Changbin Yu
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Optimisation techniques ,Interpolation and function approximation (numerical analysis) ,Combinatorial mathematics ,Stability in control theory ,Control engineering systems. Automatic machinery (General) ,TJ212-225 - Abstract
Abstract In this paper, a general biased min‐consensus protocol for continuous‐time multi‐agent systems is presented. In this protocol, agents considered as sources maintain static states, while the state of each non‐source agent evolves using a general min‐consensus‐like function, which takes the states of its neighbours and a biased term as inputs. The properties of the general function have been identified so that the proposed protocol can achieve global asymptotic stability. Unlike conventional consensus protocols where a network of agents reach an agreement on certain quantities of interest, agents under the general biased min‐consensus protocol will converge to different states but can generate various design results pertaining to complex combinatorial optimization problems, such as the shortest path problem and its variants.
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- 2021
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11. Green Manure Amendment Increases Soil Phosphorus Bioavailability and Peanut Absorption of Phosphorus in Red Soil of South China
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Chiming Gu, Weisheng Lv, Xing Liao, Margot Brooks, Yinshui Li, Changbin Yu, Lu Yang, Xiaoyong Li, Wenshi Hu, Jing Dai, Wei Zheng, and Lu Qin
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soil phosphorus components ,organic farming ,winter fallow ,green manure return ,peanut production ,Agriculture - Abstract
Peanut (Arachis hypogaea L.) is one of the most important crops produced worldwide. Peanut is the dominant crop in the typical upland red soil areas of China; however, phosphorus bioavailability in red soil is very low, which severely affects peanut production. To improve the phosphorus bioavailability, which substantially promotes the green development of peanut production, a peanut–green manure rotation field experiment was conducted with six treatments (milkvetch; radish; brassica rape; mustard rape; winter fallow and no-tillage), commencing in September 2017 in the red soil area of Jiangxi province, China. The results show that compared with no-tillage (NT) treatments, different green manure returning treatments had significant effects on soil pH, soil phosphorus components and available potassium content. The particulate phosphorus and soil available phosphorus contents in the green manure treatments were significantly higher than those in the winter fallow (WF) treatment. Compared with the WF treatment, the content of particulate phosphorous in brassica rape (BR), radish (R) and milkvetch (MV) treatments was significantly increased by 6.55%, 3.66% and 2.50%, respectively; the available phosphorus content in mustard rape (MR), BR, R and MV was significantly increased by 20.93%, 25.60%, 23.76% and 18.10%, respectively. In addition, the total phosphorus content of peanut shell in the MV and R treatment was significantly higher than that in the WF treatment, increasing by 33.47% and 60.66%, respectively. Compared with the WF treatment, the peanut biomass of MR, BR and R treatments increased significantly by 19.51%, 29.83% and 19.77%, respectively. The total phosphorus accumulation in all green manure treatments was higher than that in the WF treatment, and the MV treatment reached a significant level at 18.83%. Based on these results, the particulate phosphorus (PP) and available phosphorus were significantly affected by different green manure treatments; green manure amendment improves peanut phosphorus uptake. The use of green manure (especially milkvetch and brassica rape) can be recommended to improve phosphorus bioavailability and yield of peanut in red soil areas.
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- 2023
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12. Author Correction: StackZDPD: a novel encoding scheme for mass spectrometry data optimized for speed and compression ratio
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Jinyin Wang, Miaoshan Lu, Ruimin Wang, Shaowei An, Cong Xie, and Changbin Yu
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Medicine ,Science - Published
- 2022
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13. Tactile–Visual Fusion Based Robotic Grasp Detection Method with a Reproducible Sensor
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Yaoxian Song, Yun Luo, and Changbin Yu
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Tactile sensor ,Tactile–visual dataset ,Multi-modal fusion ,Deep learning ,Grasp detection ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Robotic grasp detection is a fundamental problem in robotic manipulation. The conventional grasp methods, using vision information only, can cause potential damage in force-sensitive tasks. In this paper, we propose a tactile–visual based method using a reproducible sensor to realize a fine-grained and haptic grasping. Although there exist several tactile-based methods, they require expensive custom sensors in coordination with their specific datasets. In order to overcome the limitations, we introduce a low-cost and reproducible tactile fingertip and build a general tactile–visual fusion grasp dataset including 5,110 grasping trials. We further propose a hierarchical encoder–decoder neural network to predict grasp points and force in an end-to-end manner. Then comparisons of our method with the state-of-the-art methods in the benchmark are shown both in vision-based and tactile–visual fusion schemes, and our method outperforms in most scenarios. Furthermore, we also compare our fusion method with the only vision-based method in the physical experiment, and the results indicate that our end-to-end method empowers the robot with a more fine-grained grasp ability, reducing force redundancy by 41%. Our project is available at https://sites.google.com/view/tvgd
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- 2021
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14. Green Manure Amendment Can Reduce Nitrogen Fertilizer Application Rates for Oilseed Rape in Maize–Oilseed Rape Rotation
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Chiming Gu, Wei Huang, Yue Li, Yinshui Li, Changbin Yu, Jing Dai, Wenshi Hu, Xiaoyong Li, Margot Brooks, Lihua Xie, Xing Liao, and Lu Qin
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green manure ,nitrogen application ,chemical fertilizer reduction ,oilseed rape ,maize–oilseed rape rotation ,Botany ,QK1-989 - Abstract
Excessive use of chemical fertilizers has led to a reduction in the quality of arable land and environmental pollution. Using green manure to replace chemical fertilizers is one of the most effective solutions. To study the effect of green manure on the requirement for nitrogen fertilizer in oilseed rape, a field experiment with maize–oilseed rape rotation was conducted. Green manure was intercropped between rows of maize and returned after the maize harvest, with no green manure intercropped as control. Different nitrogen fertilizer treatments (0, 65%, 75% and 100% N rates, respectively) were applied during the oilseed rape season. The results showed that with a 35% reduction in nitrogen application rate, the rapeseed grain yield was significantly higher with the maize intercropping with green manure returned to the field than with the maize monocropping treatment at the same nitrogen level. Under conditions of intercropping and return of green manure, compared with the full standard rate of nitrogen fertilizer treatment, a reduction in nitrogen application of 25–30% in the rape season had no significant effect on rape yield. The agronomic efficiency of nitrogen fertilizer on oilseed rape increased significantly, by 47.61–121%, with green manure incorporation. In addition, green manure incorporation significantly increased the soil organic matter content and the soil-available nitrogen content when chemical nitrogen fertilization was abandoned. Benefit analysis showed that a 25–35% reduction in chemical nitrogen fertilizer applied to oilseed rape crops could be achieved by intercropping green manure in the maize season before the sowing of rapeseed in the experimental area. In the long-term, this measure would increase nitrogen utility, reduce production costs, and have concomitant environmental benefits of improving the quality of cultivated land.
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- 2021
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15. Inverse kinematics-based motion planning for dual-arm robot with orientation constraints
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Jiangping Wang, Shirong Liu, Botao Zhang, and Changbin Yu
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Electronics ,TK7800-8360 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
This article proposes an efficient and probabilistic complete planning algorithm to address motion planning problem involving orientation constraints for decoupled dual-arm robots. The algorithm is to combine sampling-based planning method with analytical inverse kinematic calculation, which randomly samples constraint-satisfying configurations on the constraint manifold using the analytical inverse kinematic solver and incrementally connects them to the motion paths in joint space. As the analytical inverse kinematic solver is applied to calculate constraint-satisfying joint configurations, the proposed algorithm is characterized by its efficiency and accuracy. We have demonstrated the effectiveness of our approach on the Willow Garage’s PR2 simulation platform by generating trajectory across a wide range of orientation-constrained scenarios for dual-arm manipulation.
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- 2019
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16. Evolution of cooperation in synergistically evolving dynamic interdependent networks: fundamental advantages of coordinated network evolution
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Zhihu Yang, Changbin Yu, Jonghyuk Kim, Zhi Li, and Long Wang
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coevolution ,cooperation ,coordinated linking dynamics ,dynamic interdependent networks ,Science ,Physics ,QC1-999 - Abstract
Real networks are not only multi-layered yet also dynamic. The role of coordinated network evolution regarding dynamic multi-layer networks where both network and strategy evolution simultaneously show diverse interdependence by layers remains poorly addressed. Here, we propose a general and simple coevolution framework to analyze how coordination of different dynamical processes affects strategy propagation in synergistically evolving interdependent networks. The strategic feedback constitutes the main driving force of network evolution yet the inherent cross-layer self-optimization functions as its compensation. We show that these two ingredients often catalyze a better performance of network evolution in propagating cooperation. Coordinated network evolution may be a double-edged sword to cooperation and the network-adapting rate plays a crucial role in flipping its double-sided effect. It often economizes the cost and time consumption for driving the system to the full cooperation phase. Importantly, strongly coupled slow-tuned networks can outperform weakly coupled fast-regulated networks in solving social dilemmas, highlighting the fundamental advantages of coordinated network evolution and the importance of synergistic effect of dynamical processes in upholding human cooperation in multiplex networks.
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- 2019
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17. Evolution of cooperation driven by majority-pressure based interdependence
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Zhihu Yang, Changbin Yu, Jonghyuk Kim, Zhi Li, and Long Wang
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co-evolution ,cooperation ,social dilemmas ,interdependent networks ,Science ,Physics ,QC1-999 - Abstract
The evolution of cooperation on interdependent networks is arousing increasing concern based on the fact that more and more complex systems in the real-world have been proven to be organized in the form of multi-layer networks rather than single-layer networks. In this study, we examine the effects of self-organized interdependence on the evolution and stabilization of cooperation with social dilemmas depicted by the Prisoner’s Dilemma Game (PDG) and the Public Goods Game (PGG) in which agents with the most common strategy have the chance to be rewarded proportionally to the fitness of corresponding agents belonging to the other network. We show that such a type-free rewarding rule, independent of game strategy, establishes a time-varying interdependence between two initially independent populations whereby cooperation is highly promoted as well as stabilized both in the two-player PDG and in the multi-player PGG. Majority-pressure based interdependence at stake has proven pretty neutral in regard to game strategy because it is contingent on strategy configuration rather than strategy itself, which thus gives birth to homologous communities, including cooperative as well as non-cooperative, and thereby an enhanced spatial reciprocity between non-identical networks is triggered. Of particular interest is the double-edged sword effect of network interdependence on cooperation although in most instances the heavier the interdependence, the better the evolution of cooperation. Furthermore, interpretations of the nontrivial relationship between cooperation and benchmark threshold measuring the strategy’s local popularity highlight that rewarding the minimum majority is optimal for the evolution of cooperation in such scenario. Finally, we claim our observations are also quite robust with respect to mutation.
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- 2018
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18. Analysis of the Spatial Variation of Network-Constrained Phenomena Represented by a Link Attribute Using a Hierarchical Bayesian Model
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Zhensheng Wang, Yang Yue, Qingquan Li, Ke Nie, and Changbin Yu
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network-constrained ,points of interests ,hierarchical Bayesian model ,attribute-based method ,local indicators of network-constrained clusters (LINCS) ,Geography (General) ,G1-922 - Abstract
The spatial variation of geographical phenomena is a classical problem in spatial data analysis and can provide insight into underlying processes. Traditional exploratory methods mostly depend on the planar distance assumption, but many spatial phenomena are constrained to a subset of Euclidean space. In this study, we apply a method based on a hierarchical Bayesian model to analyse the spatial variation of network-constrained phenomena represented by a link attribute in conjunction with two experiments based on a simplified hypothetical network and a complex road network in Shenzhen that includes 4212 urban facility points of interest (POIs) for leisure activities. Then, the methods named local indicators of network-constrained clusters (LINCS) are applied to explore local spatial patterns in the given network space. The proposed method is designed for phenomena that are represented by attribute values of network links and is capable of removing part of random variability resulting from small-sample estimation. The effects of spatial dependence and the base distribution are also considered in the proposed method, which could be applied in the fields of urban planning and safety research.
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- 2017
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19. CXCL9, IL2RB, and SPP1, potential diagnostic biomarkers in the co-morbidity pattern of atherosclerosis and non-alcoholic steatohepatitis
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Xize Wu, Changbin Yuan, Jiaxiang Pan, Yi Zhou, Xue Pan, Jian Kang, Lihong Ren, Lihong Gong, and Yue Li
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Bioinformatics ,Differentially expressed genes ,Weighted gene co-expression network analysis ,Immune infiltration microenvironment ,Medicine ,Science - Abstract
Abstract Non-alcoholic steatohepatitis (NASH) is a hepatocyte inflammation based on hepatocellular steatosis, yet there is no effective drug treatment. Atherosclerosis (AS) is caused by lipid deposition in the endothelium, which can lead to various cardiovascular diseases. NASH and AS share common risk factors, and NASH can also elevate the risk of AS, causing a higher morbidity and mortality rate for atherosclerotic heart disease. Therefore, timely detection and diagnosis of NASH and AS are particularly important. In this study, differential gene expression analysis and weighted gene co-expression network analysis were performed on the AS (GSE100927) and NASH (GSE89632) datasets to obtain common crosstalk genes, respectively. Then, candidate Hub genes were screened using four topological algorithms and externally validated in the GSE43292 and GSE63067 datasets to obtain Hub genes. Furthermore, immune infiltration analysis and gene set variation analysis were performed on the Hub genes to explore the underlying mechanisms. The DGIbd database was used to screen candidate drugs for AS and NASH. Finally, a NASH model was constructed using free fatty acid-induced human L02 cells, an AS model was constructed using lipopolysaccharide-induced HUVECs, and a co-morbidity model was constructed using L02 cells and HUVECs to verify Hub gene expression. The result showed that a total of 113 genes common to both AS and NASH were identified as crosstalk genes, and enrichment analysis indicated that these genes were mainly involved in the regulation of immune and metabolism-related pathways. 28 candidate Hub genes were screened according to four topological algorithms, and CXCL9, IL2RB, and SPP1 were identified as Hub genes after in vitro experiments and external dataset validation. The ROC curves and SVM modeling demonstrated the good diagnostic efficacy of these three Hub genes. In addition, the Hub genes are strongly associated with immune cell infiltration, especially macrophages and γ–δ T cell infiltration. Finally, five potential therapeutic drugs were identified. has-miR-185 and hsa-miR-335 were closely related to AS and NASH. This study demonstrates that CXCL9, IL2RB, and SPP1 may serve as potential biomarkers for the diagnosis of the co-morbidity patterns of AS and NASH and as potential targets for drug therapy.
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- 2024
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20. Synchronization for interacting clusters of generic linear agents and nonlinear oscillators: a unified analysis
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Changbin, Yu and Qin, Jiahu
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- 2014
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21. Green Manure Amendment Can Reduce Nitrogen Fertilizer Application Rates for Oilseed Rape in Maize–Oilseed Rape Rotation
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Margot Brooks, Lu Qin, Yinshui Li, Wenshi Hu, Chiming Gu, Jing Dai, Xing Liao, Lihua Xie, Li Xiaoyong, Changbin Yu, Yue Li, and Wei Huang
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Rapeseed ,oilseed rape ,nitrogen application ,chemistry.chemical_element ,Environmental pollution ,Plant Science ,green manure ,chemical fertilizer reduction ,maize–oilseed rape rotation ,Article ,Green manure ,Ecology, Evolution, Behavior and Systematics ,Ecology ,biology ,Monocropping ,Soil organic matter ,Botany ,Sowing ,Intercropping ,biology.organism_classification ,Nitrogen ,chemistry ,Agronomy ,QK1-989 ,Environmental science - Abstract
Excessive use of chemical fertilizers has led to a reduction in the quality of arable land and environmental pollution. Using green manure to replace chemical fertilizers is one of the most effective solutions. To study the effect of green manure on the requirement for nitrogen fertilizer in oilseed rape, a field experiment with maize–oilseed rape rotation was conducted. Green manure was intercropped between rows of maize and returned after the maize harvest, with no green manure intercropped as control. Different nitrogen fertilizer treatments (0, 65%, 75% and 100% N rates, respectively) were applied during the oilseed rape season. The results showed that with a 35% reduction in nitrogen application rate, the rapeseed grain yield was significantly higher with the maize intercropping with green manure returned to the field than with the maize monocropping treatment at the same nitrogen level. Under conditions of intercropping and return of green manure, compared with the full standard rate of nitrogen fertilizer treatment, a reduction in nitrogen application of 25–30% in the rape season had no significant effect on rape yield. The agronomic efficiency of nitrogen fertilizer on oilseed rape increased significantly, by 47.61–121%, with green manure incorporation. In addition, green manure incorporation significantly increased the soil organic matter content and the soil-available nitrogen content when chemical nitrogen fertilization was abandoned. Benefit analysis showed that a 25–35% reduction in chemical nitrogen fertilizer applied to oilseed rape crops could be achieved by intercropping green manure in the maize season before the sowing of rapeseed in the experimental area. In the long-term, this measure would increase nitrogen utility, reduce production costs, and have concomitant environmental benefits of improving the quality of cultivated land.
- Published
- 2021
22. Tactile–Visual Fusion Based Robotic Grasp Detection Method with a Reproducible Sensor
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Luo Yun, Yaoxian Song, and Changbin Yu
- Subjects
Fusion ,General Computer Science ,Multi modal fusion ,Computer science ,business.industry ,Deep learning ,GRASP ,Grasp detection ,QA75.5-76.95 ,Tactile–visual dataset ,Multi-modal fusion ,Computational Mathematics ,Tactile sensor ,Electronic computers. Computer science ,Computer vision ,Artificial intelligence ,business - Abstract
Robotic grasp detection is a fundamental problem in robotic manipulation. The conventional grasp methods, using vision information only, can cause potential damage in force-sensitive tasks. In this paper, we propose a tactile–visual based method using a reproducible sensor to realize a fine-grained and haptic grasping. Although there exist several tactile-based methods, they require expensive custom sensors in coordination with their specific datasets. In order to overcome the limitations, we introduce a low-cost and reproducible tactile fingertip and build a general tactile–visual fusion grasp dataset including 5,110 grasping trials. We further propose a hierarchical encoder–decoder neural network to predict grasp points and force in an end-to-end manner. Then comparisons of our method with the state-of-the-art methods in the benchmark are shown both in vision-based and tactile–visual fusion schemes, and our method outperforms in most scenarios. Furthermore, we also compare our fusion method with the only vision-based method in the physical experiment, and the results indicate that our end-to-end method empowers the robot with a more fine-grained grasp ability, reducing force redundancy by 41%. Our project is available at https://sites.google.com/view/tvgd
- Published
- 2021
23. Circular Formation Control of Multiple Unicycle-Type Agents With Nonidentical Constant Speeds
- Author
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Hector Garcia de Marina, Georg S. Seyboth, Zhiyong Sun, Changbin Yu, Brian D. O. Anderson, Hangzhou Dianzi University (HDU), Ecole Nationale de l'Aviation Civile (ENAC), and University of Stuttgart
- Subjects
Nonholonomic system ,0209 industrial biotechnology ,Heading (navigation) ,Computer science ,020208 electrical & electronic engineering ,02 engineering and technology ,Kinematics ,Type (model theory) ,Displacement (vector) ,[SPI.AUTO]Engineering Sciences [physics]/Automatic ,020901 industrial engineering & automation ,Circular motion ,Control and Systems Engineering ,Control theory ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Constant (mathematics) - Abstract
International audience; This paper discusses the problem of controlling formation shapes for a group of nonholonomic unicycle-type agents with constant speeds. The control input is designed to steer their orientations and the aim is to achieve a desired formation configuration for all the agents subject to constant-speed constraints. The circular motion center is adopted as a virtual position for each agent to define the desired formation shape. We consider several different formation design approaches based on different formation specifications under different interaction graphs. In particular, two different formation design approaches, namely, a displacement-based approach and a distance-based approach, are discussed in detail to coordinate constant-speed agents in achieving a desired formation shape with stable circular motions via limited interactions. The communication and measurement requirements for each approach are also discussed. Furthermore, we propose a combined controller to stabilize a formation shape and synchronize the heading of each agent simultaneously. The effectiveness of the proposed formation control schemes is validated by both numerical simulations and real experiments with actual unmanned fixed-wing aircraft.
- Published
- 2019
24. Analysis of the Spatial Variation of Network-Constrained Phenomena Represented by a Link Attribute Using a Hierarchical Bayesian Model
- Author
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Ke Nie, Yang Yue, Changbin Yu, Qingquan Li, and Zhensheng Wang
- Subjects
Point of interest ,network-constrained ,Geography, Planning and Development ,0507 social and economic geography ,points of interests ,lcsh:G1-922 ,computer.software_genre ,Bayesian inference ,01 natural sciences ,010104 statistics & probability ,Earth and Planetary Sciences (miscellaneous) ,0101 mathematics ,Computers in Earth Sciences ,Spatial dependence ,Spatial analysis ,hierarchical Bayesian model ,attribute-based method ,local indicators of network-constrained clusters (LINCS) ,Euclidean space ,05 social sciences ,Base (topology) ,Geography ,Spatial ecology ,Spatial variability ,Data mining ,050703 geography ,computer ,lcsh:Geography (General) - Abstract
The spatial variation of geographical phenomena is a classical problem in spatial data analysis and can provide insight into underlying processes. Traditional exploratory methods mostly depend on the planar distance assumption, but many spatial phenomena are constrained to a subset of Euclidean space. In this study, we apply a method based on a hierarchical Bayesian model to analyse the spatial variation of network-constrained phenomena represented by a link attribute in conjunction with two experiments based on a simplified hypothetical network and a complex road network in Shenzhen that includes 4212 urban facility points of interest (POIs) for leisure activities. Then, the methods named local indicators of network-constrained clusters (LINCS) are applied to explore local spatial patterns in the given network space. The proposed method is designed for phenomena that are represented by attribute values of network links and is capable of removing part of random variability resulting from small-sample estimation. The effects of spatial dependence and the base distribution are also considered in the proposed method, which could be applied in the fields of urban planning and safety research.
- Published
- 2017
25. Request-Based Gossiping without Deadlocks
- Author
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A. Stephen Morse, Shaoshuai Mou, Ji Liu, Brian D. O. Anderson, and Changbin Yu
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FOS: Computer and information sciences ,0209 industrial biotechnology ,Computer science ,Distributed computing ,Process (computing) ,020206 networking & telecommunications ,02 engineering and technology ,Deadlock ,Set (abstract data type) ,020901 industrial engineering & automation ,Rate of convergence ,Computer Science - Distributed, Parallel, and Cluster Computing ,Control and Systems Engineering ,Gossip ,Optimization and Control (math.OC) ,Convergence (routing) ,0202 electrical engineering, electronic engineering, information engineering ,FOS: Mathematics ,Distributed, Parallel, and Cluster Computing (cs.DC) ,Electrical and Electronic Engineering ,Queue ,Protocol (object-oriented programming) ,Mathematics - Optimization and Control - Abstract
By the distributed averaging problem is meant the problem of computing the average value of a set of numbers possessed by the agents in a distributed network using only communication between neighboring agents. Gossiping is a well-known approach to the problem which seeks to iteratively arrive at a solution by allowing each agent to interchange information with at most one neighbor at each iterative step. Crafting a gossiping protocol which accomplishes this is challenging because gossiping is an inherently collaborative process which can lead to deadlocks unless careful precautions are taken to ensure that it does not. Many gossiping protocols are request-based which means simply that a gossip between two agents will occur whenever one of the two agents accepts a request to gossip placed by the other. In this paper, we present three deterministic request-based protocols. We show by example that the first can deadlock. The second is guaranteed to avoid deadlocks and requires fewer transmissions per iteration than standard broadcast-based distributed averaging protocols by exploiting the idea of local ordering together with the notion of an agent's neighbor queue; the protocol requires the simplest queue updates, which provides an in-depth understanding of how local ordering and queue updates avoid deadlocks. It is shown that a third protocol which uses a slightly more complicated queue update rule can lead to significantly faster convergence; a worst case bound on convergence rate is provided.
- Published
- 2016
26. Formation control using range-only measurements
- Author
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Ming Cao, Brian D. O. Anderson, Changbin Yu, Engineering and Technology Institute Groningen, Discrete Technology and Production Automation, and Faculty of Science and Engineering
- Subjects
Schedule ,STABILIZATION ,Multi-agent formation ,Cayley-Menger determinant ,Computation ,Function (mathematics) ,Vertex coloring ,Topology ,Measure (mathematics) ,Range-only measurement ,Zero (linguistics) ,Computer Science::Multiagent Systems ,Range (mathematics) ,Discrete-time algorithm ,Discrete time and continuous time ,Control and Systems Engineering ,Control theory ,SENSOR NETWORKS ,SYSTEMS ,GRAPH ,Electrical and Electronic Engineering ,Wireless sensor network ,Mathematics - Abstract
This paper proposes algorithms to coordinate a formation of mobile agents when the agents are not able to measure the relative positions of their neighbors, but only the distances to their respective neighbors. In this sense, less information is available to agents than is normally assumed in formation stabilization or station keeping problems. To control the shape of the formation, the solution advanced in the paper involves subsets of non-neighbor agents cyclically localizing the relative positions of their respective neighbor agents while these are held stationary, and then moving to reduce the value of a cost function which is nonnegative and assumes the zero value precisely when the formation has correct distances. The movement schedule is obtained by a novel vertex-coloring algorithm whose computation time is linear in the number of agents when implemented on the graphs of minimally rigid formations. Since in some formations, it may be that an agent is never allowed to be stationary (e.g. it is a fixed-wing aircraft), or because formations may be required to move as a whole in a certain direction, the results are extended to allow for cyclic localization of agents in this case. The tool used is the Cayley-Menger determinant. (C) 2011 Elsevier Ltd. All rights reserved.
- Published
- 2011
27. Energy Based Set Point Modulation for Obstacle Avoidance In Haptic Teleoperation of Aerial Robots
- Author
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Xiaolei Hou, Changbin Yu, Liang, Feng, Zhiyun Lin, and Shandong
- Published
- 2014
- Full Text
- View/download PDF
28. Causal association of Electromagnetic Signals using the Cayley Menger Determinant
- Author
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Samuel Picton Drake, Brian D. O. Anderson, and Changbin Yu
- Subjects
Physics ,Physics and Astronomy (miscellaneous) ,Geodesic ,Signal source ,Sorting ,Zero (complex analysis) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Signal ,General Relativity and Quantum Cosmology ,Antenna array ,Causal association ,Algorithm ,Event (probability theory) - Abstract
In complex electromagnetic environments it can often be difficult to determine whether signals received by an antenna array emanated from the same source. The failure to appropriately assign signal reception events to the correct emission event makes accurate localisation of the signal source impossible. In this paper we show that as the received signal events must lie on the light-cone of the emission event the Cayley-Menger determinate calculated from using the light-cone geodesic distances between received signals must be zero. This result enables us to construct an algorithm for sorting received signals into groups corresponding to the same far-field emission., 9 pages, 1 figure. Draft form. Final version published in Applied Physics Letters
- Published
- 2009
29. Coordination with the leader in a robotic team without active communication
- Author
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Ming Cao, Brian D. O. Anderson, Changbin Yu, Engineering and Technology Institute Groningen, and Discrete Technology and Production Automation
- Subjects
Engineering ,Robot kinematics ,business.industry ,Cayley-Menger determinant ,Multi-agent system ,Autonomous agent ,Real-time computing ,range measurement ,Control engineering ,LOCALIZATION ,MULTIAGENT SYSTEMS ,Measure (mathematics) ,Computer Science::Robotics ,Feature (computer vision) ,Position (vector) ,Robot ,autonomous agents ,business ,CONSENSUS ,Wireless sensor network ,leader-follower structure - Abstract
We propose a coordination algorithm for robotic multi-agent systems with leader-follower structures so that when a leader moves with a constant velocity, its followers can compute the leader's velocity after measuring their distances to the leader for a finite number of times. One feature of the proposed algorithm is that no active communication is needed, and as a result, the algorithm becomes advantageous in the application of robotic sensor networks where energy efficient algorithms are highly desirable to maximize network lifespan. The algorithm makes use of the Cayley-Menger determinant which is a powerful tool from distance geometry. It is shown that the proposed algorithm has the potential to be applied to robotic swarms in a challenging scenario where each robot is installed with only range sensors and cannot measure the position of a target directly.
- Published
- 2009
30. Generalized Controller for Directed Triangle Formations
- Author
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Changbin Yu, Ming Cao, Brian D. O. Anderson, A.S. Morse, Soura Dasgupta, Engineering and Technology Institute Groningen, and Discrete Technology and Production Automation
- Subjects
0209 industrial biotechnology ,Mobile telecommunication systems ,Engineering ,Pure mathematics ,Plane (geometry) ,business.industry ,Multi-agent system ,Autonomous agent ,02 engineering and technology ,General Medicine ,020901 industrial engineering & automation ,Control theory ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,business ,Control (linguistics) - Abstract
This paper proposes and analyzes a distributed control law which generalizes three different previously considered control laws for maintaining a triangular formation in the plane consisting of three point-modelled, mobile autonomous agents. It is shown that the control law under consideration can cause any initially non-collinear, positively-oriented [resp. negatively-oriented] triangular formation to converge exponentially fast to a desired positively-oriented [resp. negatively-oriented] triangular formation. These findings clarify and extend earlier results.
- Published
- 2008
31. Controlling a Triangular Formation of Mobile Autonomous Agents
- Author
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Ming Cao, Changbin Yu, A.S. Morse, Brian D. O. Anderson, Soura Dasgupta, Engineering and Technology Institute Groningen, and Discrete Technology and Production Automation
- Subjects
0209 industrial biotechnology ,Engineering ,Plane (geometry) ,business.industry ,media_common.quotation_subject ,Autonomous agent ,Mobile robot ,02 engineering and technology ,Infinity ,Topology ,Thin set ,020901 industrial engineering & automation ,Control theory ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,business ,media_common ,Complement (set theory) - Abstract
This paper proposes a distributed control law for maintaining a triangular formation in the plane consisting of three mobile autonomous agents. It is shown that the control law can cause any initially non-collinear, positively-oriented {resp. negatively-oriented} triangular formation to converge exponentially fast to a desired positively-oriented {resp. negatively- oriented} triangular formation. It is also shown that there is a thin set of initially collinear formations which remain collinear and may drift off to infinity as t rarr infin. These findings complement and extend earlier findings cited below.
- Published
- 2007
32. Distributed attitude and position consensus for networked rigid bodies based on unit dual quaternion.
- Author
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Yinqiu, Wang, Fengmin, Yu, and Changbin, Yu
- Published
- 2015
- Full Text
- View/download PDF
33. Elementary operations for rigidity restoration and persistence analysis of multi-agent system.
- Author
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Yun Hou and Changbin Yu
- Subjects
- *
MULTIAGENT systems , *GEOMETRIC rigidity , *DIRECTED graphs , *COMPUTATIONAL complexity , *DEGREES of freedom - Abstract
This work focuses on the construction of rigid formation from non-rigid ones in the two-dimensional space. Analogously to operations of Henneberg sequence aiming to guarantee the minimal rigidity of formation, two new operations are introduced, allowing one to sequentially build any rigid graph by connecting non-rigid ones. A systematic construction sequence is developed based on proposed operations, and is shown to be able to restore rigidity by introducing minimum number of new edges during the construction process. Further applications of the proposed operations are also presented, one of which is successfully employed in the problem of persistence analysis of directed graphs, and can verify the persistence of a given graph with a speed two times faster comparing with existing solution. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
34. An automatic sorting approach of surface bundle based on the shared space curve.
- Author
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Changbin Yu, Ying, Shen, Biao He, and Zhigang Zhao
- Abstract
The construction of the property right volume is an important prerequisite for data management and topology maintenance in 3D cadastre, and the automatic sorting approach of patches is important to construction of the smallest solid. When property right volumes as true 3D objects are constructed, not only ideal situations that closed patches are discrete planes, but also general conditions that property right boundaries are surfaces should be taken into account. So, firstly, conceptual descriptions of boundary surfaces and mathematical expressions of both the shared curve and the cutting plane are proposed based on theory of point-set topology. Secondly, obeying the principle of topological consistency, an automatic sorting approach and corresponding restrictions are put forward by detailed processes about local interpolation of the surface, calculation of the feature polyline, sorting of the cutting plane bundle. Particularly, this paper emphasizes on the method to obtain the feature polyline of the cutting plane taking triangulation interpolation of the surface in Google SketchUp for example. It is hoped that what is discussed in this paper could provide some references for constructing the smallest solid closed by discrete surface patches applied in urban space utilization cases such as 3D cadastre. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
- Full Text
- View/download PDF
35. Controlling rectangular formations.
- Author
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Dasgupta, S., Anderson, B.D.O., Changbin Yu, and Summers, T.H.
- Published
- 2011
36. Control of triangular formations with a time-varying scale function.
- Author
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Huang Huang, Changbin Yu, and Xiangke Wang
- Published
- 2011
37. Human leadership approaches to hybrid human/robot teams.
- Author
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Nizette, B.E. and Changbin Yu
- Published
- 2011
- Full Text
- View/download PDF
38. Range-only sensing for formation shape control and easy sensor network localization.
- Author
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Anderson, B.D.O. and Changbin Yu
- Published
- 2011
- Full Text
- View/download PDF
39. Connectivity-Based Distance Estimation in Wireless Sensor Networks.
- Author
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Baoqi Huang, Changbin Yu, Anderson, B.D.O., and Guoqiang Mao
- Published
- 2010
- Full Text
- View/download PDF
40. Feedback linearization regulator with coupled attitude and translation dynamics based on unit dual quaternion.
- Author
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Xiangke Wang and Changbin Yu
- Published
- 2010
- Full Text
- View/download PDF
41. Localization bias correction in n-dimensional space.
- Author
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Yiming Ji, Changbin Yu, and Anderson, B.D.O.
- Published
- 2010
- Full Text
- View/download PDF
42. Cooperative shadowing algorithm: A speed-only approach.
- Author
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Xiaolei Hou, Changbin Yu, Weidong Gu, and Huomin Dong
- Published
- 2010
- Full Text
- View/download PDF
43. Geometric dilution of localization and bias-correction methods.
- Author
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Yiming Ji, Changbin Yu, and Anderson, B.D.O.
- Published
- 2010
- Full Text
- View/download PDF
44. Target localization and circumnavigation using bearing measurements in 2D.
- Author
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Deghat, M., Shames, I., Anderson, B.D.O., and Changbin Yu
- Published
- 2010
- Full Text
- View/download PDF
45. Distributed LQR design for multi-agent formations.
- Author
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Huang Huang, Changbin Yu, and Qinghe Wu
- Published
- 2010
- Full Text
- View/download PDF
46. Network localizability with link or node losses.
- Author
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Changbin Yu, Dasgupta, S., and Anderson, B.D.O.
- Published
- 2010
- Full Text
- View/download PDF
47. Splitting rigid formations.
- Author
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Ong, W., Changbin Yu, and Anderson, B.D.O.
- Published
- 2009
- Full Text
- View/download PDF
48. Formation shape control: Global asymptotic stability of a four-agent formation.
- Author
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Summers, T.H., Changbin Yu, Anderson, B.D.O., and Dasgupta, S.
- Published
- 2009
- Full Text
- View/download PDF
49. Control of coleader formations in the plane.
- Author
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Summers, T.H., Changbin Yu, Anderson, B.D.O., and Dasgupta, S.
- Published
- 2009
- Full Text
- View/download PDF
50. Analyzing error propagation in range-based multihop sensor localization.
- Author
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Baoqi Huang, Changbin Yu, and Anderson, B.D.O.
- Published
- 2009
- Full Text
- View/download PDF
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