Filters








106,876 Hits in 3.8 sec

Region crossing change on surfaces [article]

Jiawei Cheng, Zhiyun Cheng, Jinwen Xu, Jieyao Zheng
2019 arXiv   pre-print
Region crossing change is a local operation on link diagrams. The behavior of region crossing change on S^2 is well understood. In this paper, we study the behavior of (modified) region crossing change on higher genus surfaces.
arXiv:1908.06864v1 fatcat:sqksfmif7vaqfkcql3tolvccom

Hierarchical Lattice Modeling Method with Gradient Functions

Cheng Cheng, Ning Dai, Weiping Gu, Bai Xu, Jing Xu, Abid Yahya
2022 Mobile Information Systems  
Lattice structure materials have great application potential in biomedical, aerospace, and other fields. In fact, designing multilevel structure parametrically to achieve excellent mechanical performance is a challenging task. In this paper, a hierarchical lattice modeling method with gradient functions is proposed on the basis of the multilevel structural characteristics of organisms to solve the problem of the coexistence of high hardness, high strength, and high toughness. The multilevel
more » ... space is filled with matching lattices in accordance with the given dynamic parameters, and the design is optimized in accordance with the simulation results. Thus, the desired composite functional structure is generated. In fact, the proposed method is divided into two stages, that is, preprocessing and design. In the former stage, the interpolation method is used to establish a lattice unit model family retrieved by parameters, such as elastic modulus and impact toughness. In the latter stage, the multilevel 3D reconstruction model is initially filled with the gradient multilevel lattices through the global optimization technique with an isosurface modeling algorithm. The porosity, rod diameter, and other parameters of the lattice structure are regulated in accordance with the results of finite element analysis through image mapping, meeting the requirements of biomechanical characteristics. Our empirical evaluation and experimental results demonstrate that the proposed method can control the relationship between porous structure porosity, elastic modulus, and impact toughness and design bionic multispace microstructures close to biodental displacement and deformation.
doi:10.1155/2022/1359472 fatcat:yiz5mzjyvne7phfgtvfmgeqw54

Comparison of Outcomes of Haploidentical Peripheral Blood Stem Cell Transplantation Supported by Third-Party Cord Blood Versus Human Leukocyte Antigen-Matched Sibling Peripheral Blood Stem Cell Transplantation in Hematologic Malignancy Patients

Tingting Cheng, Tingting Cheng, Tingting Cheng, Tingting Cheng, Yan Chen, Yan Chen, Yan Chen, Yan Chen, Yi Liu, Yi Liu, Yi Liu, Yi Liu (+20 others)
2022 Frontiers in Oncology  
Recent studies have shown that haploidentical hematopoietic stem cell transplantation supported by third-party cord blood (haplo-cord-HSCT) results in rapid hematopoietic recovery, low incidences of graft-versus-host disease (GVHD), and relapse of hematologic malignancies. However, few reports on haploidentical peripheral blood stem cell transplantation supported by third-party cord blood (haplo-cord-PBSCT) have been published. To evaluate the outcomes of patients who underwent haplo-cord-PBSCT
more » ... or human leukocyte antigen (HLA)-matched sibling donor peripheral blood stem cell transplantation (MSD-PBSCT), we retrospectively reviewed the clinical data of patients with hematologic malignancies who underwent haplo-cord-PBSCT (n = 93) or MSD-PBSCT (n = 72) in our hospital from March 2017 to December 2020. In the haplo-cord-PBSCT and MSD-PBSCT groups, the median time for neutrophil and platelet engraftment was 13 vs. 12 days (p = 0.07) and 16 vs. 13 days (p = 0.06), respectively. The 30-day cumulative incidences of neutrophil engraftment were 100.0% and 98.6% (p = 0.12). The 100-day cumulative incidences of platelet engraftment were 96.8% and 98.6% (p = 0.01). The 100-day cumulative incidences of grade II–IV and grade III–IV acute GVHD were 29.1% vs. 23.6% (p = 0.42) and 9.7% vs. 4.2% (p = 0.18). The cumulative incidences of total and moderate/severe chronic GVHD at 1 year were 26.5% vs. 17.4% and 8.1% vs. 4.5%, respectively, and at 3 years were 34.7% vs. 34.3% (p = 0.60) and 13.6% vs. 10.6% (p = 0.49), respectively. The cumulative incidences of relapse at 1 year were 9.3% and 7.2% and at 3 years were 17.0% and 17.0% (p = 0.98). Non-relapse mortality (NRM) at 1 year was 14.6% and 8.6% and at 3 years was 17.4% and 8.6% (p = 0.13) in two groups. The probabilities of overall survival (OS), disease-free survival (DFS), and GVHD-free/relapse-free survival (GRFS) at 1 year were 81.7% vs. 88.6%, 76.1% vs. 84.2%, and 71.7% vs. 79.7%, respectively, and at 3 years were 78.7% vs. 79.0%, 65.6% vs. 74.4%, and 55.5% vs. 63.6%, respec [...]
doi:10.3389/fonc.2022.922120 pmid:35912178 pmcid:PMC9331161 doaj:c5fd8df4ad2f4f29967abf4f51dd5022 fatcat:qro4lxrqjngnzj3vy4rtglsz54

Experimental self-testing for photonic graph states [article]

Jia-Min Xu, Qing Zhou, Yu-Xiang Yang, Zi-Mo Cheng, Xin-Yu Xu, Zhi-Cheng Ren, Xi-Lin Wang, Hui-Tian Wang
2021 arXiv   pre-print
Graph states -- one of the most representative families of multipartite entangled states, are important resources for multiparty quantum communication, quantum error correction, and quantum computation. Device-independent certification of highly entangled graph states plays a prominent role in the quantum information processing tasks. Here we have experimentally demonstrated device-independent certification for multipartite graph states, by adopting the robust self-testing scheme based on
more » ... le Bell inequalities. Specifically, the prepared multi-qubit Greenberger-Horne-Zeilinger (GHZ) states and linear cluster states achieve a high degree of Bell violation, which are beyond the nontrivial bounds of the robust self-testing scheme. Furthermore, our work paves the way to the device-independent certification of complex multipartite quantum states.
arXiv:2111.07562v1 fatcat:7qasznwu4ngplg54s4vhxlbz3e

Natural population inversion in a gaseous molecular filament

See Leang Chin See Leang Chin, Huailiang Xu Huailiang Xu, Ya Cheng Ya Cheng, Zhizhan Xu Zhizhan Xu, Kaoru Yamanouchi Kaoru Yamanouchi
2013 Chinese Optics Letters (COL)  
We propose a new mechanism/scheme to explain the ultrafast population inversion of molecular ions which takes place in a time scale comparable to the femtosecond laser pulse. The nonlinear pumping process including the pump photons and the self-generated harmonic photons of the pump laser would be responsible for building up population inversion to realize remote molecule lasers in femtosecond laser filaments in gases. It is shown that the remote laser emissions in molecular ions of gases may
more » ... a universal process in the femtosecond laser filament.
doi:10.3788/col201311.013201 fatcat:7tmqcdndyndsfe3dduusscoqey

Learning Discriminative 3D Shape Representations by View Discerning Networks [article]

Biao Leng, Cheng Zhang, Xiaocheng Zhou, Cheng Xu, Kai Xu
2018 arXiv   pre-print
In view-based 3D shape recognition, extracting discriminative visual representation of 3D shapes from projected images is considered the core problem. Projections with low discriminative ability can adversely influence the final 3D shape representation. Especially under the real situations with background clutter and object occlusion, the adverse effect is even more severe. To resolve this problem, we propose a novel deep neural network, View Discerning Network, which learns to judge the
more » ... of views and adjust their contributions to the representation of shapes. In this network, a Score Generation Unit is devised to evaluate the quality of each projected image with score vectors. These score vectors are used to weight the image features and the weighted features perform much better than original features in 3D shape recognition task. In particular, we introduce two structures of Score Generation Unit, Channel-wise Score Unit and Part-wise Score Unit, to assess the quality of feature maps from different perspectives. Our network aggregates features and scores in an end-to-end framework, so that final shape descriptors are directly obtained from its output. Our experiments on ModelNet and ShapeNet Core55 show that View Discerning Network outperforms the state-of-the-arts in terms of the retrieval task, with excellent robustness against background clutter and object occlusion.
arXiv:1808.03823v2 fatcat:qfx5a67ikrgwdoli2tgazs2iy4

The Prognostic Role of the Platelet-Lymphocytes Ratio in Gastric Cancer: A Meta-Analysis

Zhengshui Xu, Wei Xu, Hua Cheng, Wei Shen, Jiaqi Ying, Fei Cheng, Wenji Xu, William B. Coleman
2016 PLoS ONE  
Systemic inflammatory parameters, such as the elevator PLR (platelet-lymphocyte ratio), the NLR (neutrophil-lymphocyte ratio) and the platelet count (PLT), have been found to be associated with the prognosis in gastric cancer; however, these results, especially those relating to the PLR, remain inconsistent. So we aimed to evaluate the prognostic role of the PLR in gastric cancer by conducting and presenting the findings of this meta-analysis. Methods We conducted a systematic literature search
more » ... in PubMed, Embase and the Cochrane Library to evaluate the prognostic value of the PLR in gastric cancer. The quality of the included studies was evaluated using the Newcastle Ottawa Quality Assessment Scale (NOS). The hazard ratio (HR) /Odds Ratio (OR) and its 95% confidence were pooled using a random effects model. A funnel plot based on overall survival was used to evaluate the publication bias. Results It total, 8 studies comprising 4513 patients with gastric cancer met the pre-setting inclusion criteria. In comparison to the normal PLR, an elevated PLR was correlated with a higher risk of lymph node metastasis with an OR of 1.50 (95% Cl:1.24-1.82; I 2 = 17%) and serosal invasion (T3 +T4) risk with an OR of 2.01 (95% Cl: 1.49-2.73; I 2 = 55%), and an elevated PLR also increased the advanced stage (III +IV) risk with an OR of 1.99 (95% Cl: 1.60-2.46; I 2 = 28%). An elevated PLR was not a reliable predictor for OS with an HR of 0.99 (95% CI: 0.9-1.1; I 2 = 12%). Conclusions An elevated PLR was correlated with a higher risk of lymph node metastasis, serosal invasion and advanced stage (III +IV) risk in gastric cancer; however, the PLR may not act as a negative predictor for the overall survival of gastric cancer. 3 / 11 tasis, and the high PLR also increased the serosal invasion (T3 +T4) risk and the advanced stage (III +IV) risk in patients with gastric cancer. Although the specific mechanism is still incompletely understood, our results are in accordance with other studies that found that the PLR was a negative prognostic factor for various cancers, such as pancreatic ductal adenocarcinoma, hepatocellular carcinoma and colorectal cancer [30][31][32][33][34]. In this research we found that the PLR could not act as a significant biomarker in the OS of gastric cancer. And subgroup analyses for OS revealed that no differences could distinctly be found in China, Korea or Turkey. Given the various cut off values of the PLR in the included studies, the effects of these Fig 3. Forrest plots (A), sensitivity analyses (B) of included studies evaluating HR of PLR for OS. OS = overall survival, CI = confidence interval, IV = inverse variance, SE = standard error.
doi:10.1371/journal.pone.0163719 pmid:27684077 pmcid:PMC5042439 fatcat:g5f774ivdbfitbk4s3uorezqmi

Energy-Efficient Accelerator Design for Deformable Convolution Networks [article]

Dawen Xu, Cheng Chu, Cheng Liu, Ying Wang, Huawei Li, Xiaowei Li, Kwang-Ting Cheng
2021 arXiv   pre-print
Deformable convolution networks (DCNs) proposed to address the image recognition with geometric or photometric variations typically involve deformable convolution that convolves on arbitrary locations of input features. The locations change with different inputs and induce considerable dynamic and irregular memory accesses which cannot be handled by classic neural network accelerators (NNAs). Moreover, bilinear interpolation (BLI) operation that is required to obtain deformed features in DCNs
more » ... so cannot be deployed on existing NNAs directly. Although a general purposed processor (GPP) seated along with classic NNAs can process the deformable convolution, the processing on GPP can be extremely slow due to the lack of parallel computing capability. To address the problem, we develop a DCN accelerator on existing NNAs to support both the standard convolution and deformable convolution. Specifically, for the dynamic and irregular accesses in DCNs, we have both the input and output features divided into tiles and build a tile dependency table (TDT) to track the irregular tile dependency at runtime. With the TDT, we further develop an on-chip tile scheduler to handle the dynamic and irregular accesses efficiently. In addition, we propose a novel mapping strategy to enable parallel BLI processing on NNAs and apply layer fusion techniques for more energy-efficient DCN processing. According to our experiments, the proposed accelerator achieves orders of magnitude higher performance and energy efficiency compared to the typical computing architectures including ARM, ARM+TPU, and GPU with 6.6\% chip area penalty to a classic NNA.
arXiv:2107.02547v1 fatcat:rmlynbxmbjcwlnfjntxxjpi6xu

A Large Massive Quiescent Galaxy Sample at z 1.2 [article]

Hai Xu, Y.Sophia Dai, Jia-Sheng Huang, Zhaoyu Wang, Cheng Cheng, Xu Shao, Shumei Wu, Xiaohu Yang, Yipeng Jing, Marcin Sawicki, Feng-Yuan Liu
2020 arXiv   pre-print
The authors would like to thank Kevin Xu, Haojing Yan, Chuan He, and Zijian Li for their helpful discussions.  ... 
arXiv:2010.10941v1 fatcat:aipe5vsjk5h5behd6kat4getxq

The Role of Autophagy in Gastric Cancer Chemoresistance: Friend or Foe?

Jing-Li Xu, Li Yuan, Yan-Cheng Tang, Zhi-Yuan Xu, Han-Dong Xu, Xiang-Dong Cheng, Jiang-Jiang Qin
2020 Frontiers in Cell and Developmental Biology  
., 2016; Cheng et al., 2019) . On one hand, the activated ERK1 and ERK2 can induce autophagy through Ras-Raf (MAPKKK)-MEK (MAPKK)-ERK signal pathway (Panda et al., 2015) .  ...  Xu et al. (2018a) have shown that Rab5a expression level is positively associated with drug resistance in gastric cancer cells.  ... 
doi:10.3389/fcell.2020.621428 pmid:33344463 pmcid:PMC7744622 fatcat:ompgalzpxrdsdjnrwqujcseq3i

Photobiomodulation Process

Yang-Yi Xu, Timon Cheng-Yi Liu, Lei Cheng
2012 International Journal of Photoenergy  
In this case, the LPBM should be the linear function of intensity according to KPHCP and (3a) and (3b), which is supported by Cheng et al., Duan et al., Karu, Liang et al., and Xu et al. [9, 37-40].  ... 
doi:10.1155/2012/374861 fatcat:zf7syppwnjbqfa3laja6bmqxnu

Prp19 Is an Independent Prognostic Marker and Promotes Neuroblastoma Metastasis by Regulating the Hippo-YAP Signaling Pathway

Yuanxia Cai, Kai Chen, Cheng Cheng, Yonghu Xu, Qianqian Cheng, Guofeng Xu, Yeming Wu, Zhixiang Wu
2020 Frontiers in Oncology  
Copyright © 2020 Cai, Chen, Cheng, Xu, Cheng, Xu, Wu and Wu. This is an openaccess article distributed under the terms of the Creative Commons Attribution License (CC BY).  ... 
doi:10.3389/fonc.2020.575366 pmid:33224878 pmcid:PMC7667276 fatcat:aam3wnsaanbkvajkhvgaanhuti

Angiotensin‐(1‐7) Mitigated Angiotensin II‐induced Abdominal Aortic Aneurysms in Apolipoprotein E Knockout Mice

Fei Xue, Jing Cheng, Wenhai Sui, Cheng Cheng, Hongxuan Li, Meng Zhang, Jie Zhang, Xingli Xu, Jing Ma, Lin Lu, Jinfeng Xu, Meng Zhang (+3 others)
2019 British Journal of Pharmacology  
How to cite this article: Xue F, Yang J, Cheng J, et al.  ...  ORCID Fei Xue https://orcid.org/0000-0001-7047-8497 Xingli Xu https://orcid.org/0000-0002-7188-5614 SUPPORTING INFORMATION Additional supporting information may be found online in the Supporting Information  ... 
doi:10.1111/bph.14906 pmid:31658493 pmcid:PMC7070176 fatcat:iheic4jmyjftxfqgh7kms25uti

Arginine promotes fluoride uptake into artificial carious lesionsin vitro

X Cheng, P Xu, X Zhou, M Deng, L Cheng, M Li, Y Li, X Xu
2015 Australian dental journal  
© 2015 Australian Dental Association X Cheng et al. © 2015 Australian Dental Association X Cheng et al.  ...  content in each test agent and the post-treatment enamel fluoride uptake (mean AE SD) (n = 8 for each group) Group © 2015 Australian Dental Association © 2015 Australian Dental Association X Cheng  ... 
doi:10.1111/adj.12278 pmid:25721284 fatcat:yh4rscd3c5cjnjartbf65ive2i

K-Reach: Who is in Your Small World [article]

James Cheng, Zechao Shang, Hong Cheng, Haixun Wang, Jeffrey Xu Yu
2012 arXiv   pre-print
We study the problem of answering k-hop reachability queries in a directed graph, i.e., whether there exists a directed path of length k, from a source query vertex to a target query vertex in the input graph. The problem of k-hop reachability is a general problem of the classic reachability (where k=infinity). Existing indexes for processing classic reachability queries, as well as for processing shortest path queries, are not applicable or not efficient for processing k-hop reachability
more » ... s. We propose an index for processing k-hop reachability queries, which is simple in design and efficient to construct. Our experimental results on a wide range of real datasets show that our index is more efficient than the state-of-the-art indexes even for processing classic reachability queries, for which these indexes are primarily designed. We also show that our index is efficient in answering k-hop reachability queries.
arXiv:1208.0090v1 fatcat:e3mkzvp64fbhjbjh5enzwzxelq
« Previous Showing results 1 — 15 out of 106,876 results