542 Hits in 1.2 sec

2020 Atomic Saildrone Cruise Report

Chelle L. Gentemann, Jorge. Vazquez, Wenqing Tang
2020 Zenodo  
Cruise report for 2020 ATOMIC saildrone campaign.
doi:10.5281/zenodo.5201863 fatcat:27cfzbemqvd2thjjqhqqikut4y

Wind Power at Sea as Observed from Space [chapter]

W. Timothy, Wenqing Tang, Xiaosu Xie
2010 Wind Power  
For example, Liu and Tang (1996) incorporated such a relation in solving the similarity function.  ...  The geophysical data product of the scatterometer is the equivalent neutral wind, U N , at 10 m height (Liu and Tang 1996) , which, by definition, is uniquely related to τ, while the relation between  ...  Timothy Liu, Wenqing Tang and Xiaosu Xie (2010) .  ... 
doi:10.5772/8344 fatcat:jf6sggo7yfazti7thfw4pytwyi

Wind power distribution over the ocean

W. Timothy Liu, Wenqing Tang, Xiaosu Xie
2008 Geophysical Research Letters  
The geophysical data product of the scatterometer is the Equivalent Neutral Wind (ENW) at 10 m height [Liu and Tang, 1996] , which, by definition, is uniquely related to t, while the relation between  ... 
doi:10.1029/2008gl034172 fatcat:2fvlv2dqh5alhptvrbjtbjt6c4

Testing for homogeneity of gametic disequilibrium across strata

Xiaolin Yin, Wenqing Ma, Manlai Tang, Jianhua Guo
2007 BMC Genetics  
Tang, Man-Lai, Tang, Nian-Sheng, and Carey, Vincent J. (2004).  ...  Tang, Man-Lai, Tang, Nian-Sheng, Chan, Siu-Fung, and Chan, Ping Shing (2002).  ... 
doi:10.1186/1471-2156-8-85 pmid:18096053 pmcid:PMC2245972 fatcat:jkimfwst6zftfedflppbuexuka

Vision-Language Pre-Training for Boosting Scene Text Detectors [article]

Sibo Song, Jianqiang Wan, Zhibo Yang, Jun Tang, Wenqing Cheng, Xiang Bai, Cong Yao
2022 arXiv   pre-print
Recently, vision-language joint representation learning has proven to be highly effective in various scenarios. In this paper, we specifically adapt vision-language joint learning for scene text detection, a task that intrinsically involves cross-modal interaction between the two modalities: vision and language, since text is the written form of language. Concretely, we propose to learn contextualized, joint representations through vision-language pre-training, for the sake of enhancing the
more » ... ormance of scene text detectors. Towards this end, we devise a pre-training architecture with an image encoder, a text encoder and a cross-modal encoder, as well as three pretext tasks: image-text contrastive learning (ITC), masked language modeling (MLM) and word-in-image prediction (WIP). The pre-trained model is able to produce more informative representations with richer semantics, which could readily benefit existing scene text detectors (such as EAST and PSENet) in the down-stream text detection task. Extensive experiments on standard benchmarks demonstrate that the proposed paradigm can significantly improve the performance of various representative text detectors, outperforming previous pre-training approaches. The code and pre-trained models will be publicly released.
arXiv:2204.13867v1 fatcat:2n33746uo5bvjddgu5blujtmce

Quantum cascade laser-based spectrometer for high sensitive measurements of trace gases in air

Yuanyuan Tang Yuanyuan Tang, Wenqing Liu Wenqing Liu, Ruifeng Kan Ruifeng Kan, Yujun Zhang Yujun Zhang, Dong Chen Dong Chen, Shuai Zhang Shuai Zhang, Jun Ruan Jun Ruan
2012 Chinese Optics Letters (COL)  
A quantum cascade (QC) laser-based spectrometer is developed to measure trace gases in air. The proposed spectrometer is tested for N2O, and the results presented in this letter. This system takes advantage of recent technology in QC lasers by utilizing intra-pulse scan spectroscopy, which allows high sensitive measurement. Without calibration gases, the gas concentration can be calculated with scan integration and the corresponding values from the HITRAN04 database. By analyzing the Allan
more » ... nce, a detection limit of 2 ppb is obtained. Continuous measurement of N2O sampled from ambient air shows the applicability of the proposed system for the field measurements of gases of environmental concern.
doi:10.3788/col201210.041404 fatcat:vdunqrqsrnf73ixt6hfzhlwg5e

Conductivity-limiting bipolar thermal conductivity in semiconductors

Shanyu Wang, Jiong Yang, Trevor Toll, Jihui Yang, Wenqing Zhang, Xinfeng Tang
2015 Scientific Reports  
Intriguing experimental results raised the question about the fundamental mechanisms governing the electron-hole coupling induced bipolar thermal conduction in semiconductors. Our combined theoretical analysis and experimental measurements show that in semiconductors bipolar thermal transport is in general a "conductivity-limiting" phenomenon, and it is thus controlled by the carrier mobility ratio and by the minority carrier partial electrical conductivity for the intrinsic and extrinsic
more » ... respectively. Our numerical method quantifies the role of electronic band structure and carrier scattering mechanisms. We have successfully demonstrated bipolar thermal conductivity reduction in doped semiconductors via electronic band structure modulation and/or preferential minority carrier scatterings. We expect this study to be beneficial to the current interests in optimizing thermoelectric properties of narrow gap semiconductors.
doi:10.1038/srep10136 pmid:25970560 pmcid:PMC4650813 fatcat:kno7w5vs5vanbbdzpz6g656v3m

Efficient Algorithms for Approximate Single-Source Personalized PageRank Queries [article]

Sibo Wang, Renchi Yang, Runhui Wang, Xiaokui Xiao, Zhewei Wei, Wenqing Lin, Yin Yang, Nan Tang
2019 arXiv   pre-print
Given a graph G, a source node s and a target node t, the personalized PageRank (PPR) of t with respect to s is the probability that a random walk starting from s terminates at t. An important variant of the PPR query is single-source PPR (SSPPR), which enumerates all nodes in G, and returns the top-k nodes with the highest PPR values with respect to a given source s. PPR in general and SSPPR in particular have important applications in web search and social networks, e.g., in Twitter's
more » ... ollow recommendation service. However, PPR computation is known to be expensive on large graphs, and resistant to indexing. Consequently, previous solutions either use heuristics, which do not guarantee result quality, or rely on the strong computing power of modern data centers, which is costly. Motivated by this, we propose effective index-free and index-based algorithms for approximate PPR processing, with rigorous guarantees on result quality. We first present FORA, an approximate SSPPR solution that combines two existing methods Forward Push (which is fast but does not guarantee quality) and Monte Carlo Random Walk (accurate but slow) in a simple and yet non-trivial way, leading to both high accuracy and efficiency. Further, FORA includes a simple and effective indexing scheme, as well as a module for top-k selection with high pruning power. Extensive experiments demonstrate that the proposed solutions are orders of magnitude more efficient than their respective competitors. Notably, on a billion-edge Twitter dataset, FORA answers a top-500 approximate SSPPR query within 1 second, using a single commodity server.
arXiv:1908.10583v1 fatcat:nvwhrwnbgvdvhd2tyr3zjqwvja

Bilateral Collaborative Optimization for Cloud Manufacturing Service

Bin Xu, Yong Tang, Yi Zhu, Wenqing Yan, Cheng He, Jin Qi
2020 Computers Materials & Continua  
To compare the difference between BCOM-CMfg and Crisis Management Supply Chain (CMSC) [Xu, Tang, Wang et al. (2018) ], we calculate the index data of manufacturing services in the two models.  ...  It can be inferred that the S-MOPIO algorithm is good at solving models with high dimensions.To compare the difference between BCOM-CMfg and Crisis Management Supply Chain (CMSC) [Xu, Tang, Wang et al.  ... 
doi:10.32604/cmc.2020.011149 fatcat:dkjujcqdcjfhdnwenvcuxu7pou

Method and Application Researches of Accelerated Longitudinal Design

Wenqing TANG, Minqiang ZHANG, Xian HUANG, Jiazhi ZHANG, Xu WANG
2014 Advances in Psychological Science  
., 2009; Tildesley & Andrews, 2008) , 大 麻使用态度和行为变化研究 (Tang & Orwin, 2009) , (Schaie, 1965; Gerstorf et al., 2011) (Schaie, 1965 (Schaie, , 1986 (Schaie, , 1993;; Schaie & Willis, 2010) (Duncan  ... 
doi:10.3724/sp.j.1042.2014.00369 fatcat:ovfbfpaqufdcpdj5uzbrhziuhq

Techniques for Missing Data in Longitudinal Studies and Its Application

Sujing YE, Wenqing TANG, Minqiang ZHANG, Weicong CAO
2014 Advances in Psychological Science  
R. J. (1988) . Estimation and comparison of changes in the presence of informative right censoring by modelling the censoring process.
doi:10.3724/sp.j.1042.2014.01985 fatcat:r5uh4zzqtjau5gnruhgpf6lrry

Application of Mathematical Economic Model in Financial System in Manufacturing Industry

Boqi Tang, Wenqing Wu
2021 Wireless Communications and Mobile Computing  
In the field of economic research, most of the sample data is not obtained based on controllable experiments but generated during the normal operation of the economic system. Therefore, the change of an economic variable is usually not caused by a single change of a cause variable. It is the result of a combination of multiple factors. Therefore, it is necessary to study the application of mathematical intelligent computing in computer intelligent manufacturing system. The purpose of this paper
more » ... is to explore the application of mathematical intelligent computing in computer intelligent manufacturing system. For this reason, this paper uses the furnace temperature control model to carry out simulation experiment. In this simulation experiment, three algorithms of mathematical intelligent computing are mainly used, including BPES intelligent computing method, genetic algorithm, and MARS algorithm. The research results show that the superparameter optimization based on MARS has high efficiency, and the best result, the worst result, the average result, the variance, and the average time of multiple independent runs are controlled below 0.03 s. In this experiment, when the hidden layer node is 9, the prediction error value is the smallest, and the model simulation curve is basically consistent with the measured curve trend. In the simulation experiment of this paper, these three algorithms have shown good results in their respective links.
doi:10.1155/2021/2440896 fatcat:wacnaxjezzfsdfguvyb2orfr6a

OsPINOID Regulates Stigma and Ovule Initiation through Maintenance of the Floral Meristem by Auxin Signaling

Meng Xu, Ding Tang, Xinjie Cheng, Jianxiang Zhang, Yujie Tang, Quandan Tao, Wenqing Shi, Aiqing You, Minghong Gu, Zhukuan Cheng, Hengxiu Yu
2019 Plant Physiology  
Stigma and ovule initiation is essential for sexual reproduction in flowering plants. However, the mechanism underlying the initiation of stigma and ovule primordia remains elusive. We identified a stigma-less mutant of rice (Oryza sativa) and revealed that it was caused by the mutation in the PINOID (OsPID) gene. Unlike the pid mutant that shows typical pin-like inflorescences in maize (Zea mays) and Arabidopsis (Arabidopsis thaliana), the ospid mutant does not display any defects in
more » ... nce development and flower initiation, and fails to develop normal ovules in most spikelets. The auxin activity in the young pistil of ospid was lower than that in the wild-type pistil. Furthermore, the expression of most auxin response factor genes was down-regulated, and OsETTIN1, OsETTIN2, and OsMONOPTEROS lost their rearrangements of expression patterns during pistil and stamen primordia development in ospid Moreover, the transcription of the floral meristem marker gene, OSH1, was down-regulated and FLORAL ORGAN NUMBER4, the putative ortholog of Arabidopsis CLAVATA3, was up-regulated in the pistil primordium of ospid These results suggested that the meristem proliferation in the pistil primordium might be arrested prematurely in ospid Based on these results, we propose that the OsPID-mediated auxin signaling pathway plays a crucial role in the regulation of rice stigma and ovule initiation by maintaining the floral meristem.
doi:10.1104/pp.18.01385 pmid:30926655 pmcid:PMC6548252 fatcat:s3qvi7wgtjfm3leycbydkpvcza

The Application of IRT and MIRT in Test Vertical Equating

Yi WANG, Wenqing TANG, Jing LIU, Minqiang ZHANG, Ming LI, Guangming LI
2014 Advances in Psychological Science  
Test vertical equating refers to transforming the performance of students in tests of various levels to the same scale. Item Response Theory (IRT) and Multidimensional Item Response Theory (MIRT) are the main methods used in vertical equating. IRT method is an effective way to build a vertical scale because IRT models impose no requirement on the distribution of test-takers' ability and that item parameters are independent of the samples. However, its application is restricted when the test
more » ... not satisfy the unidimensional assumption. MIRT is a combination of IRT and factor analysis, making it an important tool in vertical equating to estimate ability parameter and item parameter precisely in multidimensional test. Current researches focus on the applicability of IRT and MIRT, calibration method and parameter estimation method in vertical equating and comparison study of the two methods. Future studies should concentrate on including more variables when comparing IRT and MIRT in order to expand their applications.
doi:10.3724/sp.j.1042.2014.00881 fatcat:tuxcrpka3jbnbmffsdgq37txmq

Air-sea interaction at an oceanic front: Implications for frontogenesis and primary production

Dake Chen, W. Timothy Liu, Wenqing Tang, Zhiren Wang
2003 Geophysical Research Letters  
1] Based on recent satellite observations, we hypothesize that there exists a significant air-sea interaction at the shelfbreak front in the East China Sea. An idealized oceanatmosphere coupled model was designed to test this hypothesis and to study the physical processes involved in such an interaction, with emphasis on the oceanic part. A positive feedback between ocean and atmosphere was identified in the model and its consequences were evaluated. We found that air-sea interaction, when
more » ... ned with sloping topography, could provide a mechanism for the genesis of the shelf-break front. The resulting frontal circulation and vertical mixing could bring nutrient-rich subsurface water into the surface euphotic zone, thus making the frontal region a conspicuous place for primary production.
doi:10.1029/2003gl017536 fatcat:3zywuxqp4fd57irbyfnl5r6htq
« Previous Showing results 1 — 15 out of 542 results