MuDeepNet: Unsupervised Learning of Dense Depth, Optical Flow and Camera Pose Using Multi-view Consistency Loss

Jun-Ning Zhang,Qun-Xing Su,Peng-Yuan Liu,Hong-Yu Ge,Ze-Feng Zhang 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.10

We take formulate structure from motion as a learning problem, and propose an end-to-end learning framework to calculate the image depth, optical flow, and the camera motion. This framework is composed of multiple encoder-ecoder networks. The key part of the network structure is the FlowNet, which can improve the accuracy of the estimated camera ego-motion and depth. As with recent studies, we use an end-to-end learning approach with multi-view synthesis as a variety of supervision, and proposes multi-view consistency losses to constrain both depth and camera ego-motion, requiring only monocular video sequences for training. Compared to the recently popular depth-estimation-networks using a single image, our network learns to use motion parallax correction depth. Although MuDeepNet training requires the use of two adjacent frames to obtain motion parallax, it is tested by using a single image. Thus, MuDeepNet is a monocular system. The experiments on KITTI dataset show our MuDeepNet outperforms other methods.

Tissue distribution of sialic acid-linked influenza virus receptors in beagle dogs

Zhang-Yong Ning,Xin-Tao Wu,Yan-Fen Cheng,Wen-Bao Qi,Yu-Fu An,Heng Wang,Gui-Hong Zhang,Shou-Jun Li 대한수의학회 2012 Journal of Veterinary Science Vol.13 No.3

Reports of influenza A virus infections in dogs has received considerable attention from veterinarians, virologists, and epidemiologists. Interaction between influenza viral hemagglutinin and cell oligosaccharides containing sialic acid residues results in infection. Sialic acids have an α-2,3-linkage to the penultimate galactose in the avian influenza virus receptor and an α-2,6-linkage in the human receptor. To date,there are no detailed data on the tissue distribution or histological features of either type of sialic acid-linked influenza virus receptors in beagle dogs, which are common laboratory animals and pets. We conducted the current study to visualize the in situ tissue distribution of both sialic acid-linked influenza virus receptors in various organs of beagle dogs using Maackia amurensis lectin II and Sambucus nigra agglutinin. Both α-2,3- and α-2,6-sialic acid-linked receptors were detected in the endothelial cells of the respiratory tract and other organs. Endothelial cells of most gastrointestinal organs were negative for α-2,3-sialic acid-linked receptors in the dogs. Our results suggested that these canine organs may be affected by influenza virus infection. The findings from our study will also help evaluate the occurrence and development of influenza virus infections in dogs.

Comparison of Liver Transplantation and Liver Resection for Hepatocellular Carcinoma Patients with Portal Vein Tumor Thrombus Type I and Type II

Jia-Yu Lv,Ning-Ning Zhang,Ya-Wei Du,Ying Wu,Tian-Qiang Song,Ya-Min Zhang,Yan Qu,Yu-Xin Liu,Jie Gu,Ze-Yu Wang,Yi-Bo Qiu,Bing Yang,Da-Zhi Tian,Qing-Jun Guo,Li Zhang,Ji-San Sun,Yan Xie,Zheng-Lu Wang,Xin 연세대학교의과대학 2021 Yonsei medical journal Vol.62 No.1

Purpose: The aim of this study was to compare the efficacy of liver transplantation (LT) and liver resection (LR) for hepatocellularcarcinoma (HCC) patients with portal vein tumor thrombus (PVTT) and to investigate risk factors affecting prognosis. Materials and Methods: A total of 94 HCC patients with PVTT type I (segmental PVTT) and PVTT type II (lobar PVTT) were involvedand divided into LR (n=47) and LT groups (n=47). Recurrence-free survival (RFS) and overall survival (OS) were comparedbefore and after inverse probability of treatment weighting (IPTW). Prognostic factors for RFS and OS were explored. Results: Two treatment groups were well-balanced using IPTW. In the entire cohort, LT provided a better prognosis than LR. Among patients with PVTT type I, RFS was better with LT (p=0.039); OS was not different significantly between LT and LR(p=0.093). In subgroup analysis of PVTT type I patients with α-fetoprotein (AFP) levels >200 ng/mL, LT elicited significantly longermedian RFS (18.0 months vs. 2.1 months, p=0.022) and relatively longer median OS time (23.6 months vs. 9.8 months, p=0.065). Among patients with PVTT type II, no significant differences in RFS and OS were found between LT and LR (p=0.115 and 0.335,respectively). Multivariate analyses showed treatment allocation (LR), tumor size (>5 cm), AFP and aspartate aminotransferase(AST) levels to be risk factors of RFS and treatment allocation (LR), AFP and AST as risk factors for OS. Conclusion: LT appeared to afford a better prognosis for HCC with PVTT type I than LR, especially in patients with AFP levels>200 ng/mL.

Modelling and Simulating the Spatio-Temporal Correlations of Clustered Wind Power Using Copula

Zhang, Ning,Kang, Chongqing,Xu, Qianyao,Jiang, Changming,Chen, Zhixu,Liu, Jun The Korean Institute of Electrical Engineers 2013 Journal of Electrical Engineering & Technology Vol.8 No.6

Modelling and simulating the wind power intermittent behaviour are the basis of the planning and scheduling studies concerning wind power integration. The wind power outputs are evidently correlated in space and time and bring challenges in characterizing their behaviour. This paper provides a methodology to model and simulate the clustered wind power considering its spatio-temporal correlations using the theory of copula. The sampling approach captures the complex spatio-temporal connections among the wind farms by employing a conditional density function calculated using multidimensional copula function. The empirical study of real wind power measurement shows how the wind power outputs are correlated and how these correlations affect the overall uncertainty of clustered wind power output. The case study validates the simulation technique by comparing the simulated results with the real measurements.

Modelling and Simulating the Spatio-Temporal Correlations of Clustered Wind Power Using Copula

Ning Zhang,Chongqing Kang,Qianyao Xu,Changming Jiang,Zhixu Chen,Jun Liu 대한전기학회 2013 Journal of Electrical Engineering & Technology Vol.8 No.6

Modelling and simulating the wind power intermittent behaviour are the basis of the planning and scheduling studies concerning wind power integration. The wind power outputs are evidently correlated in space and time and bring challenges in characterizing their behaviour. This paper provides a methodology to model and simulate the clustered wind power considering its spatiotemporal correlations using the theory of copula. The sampling approach captures the complex spatiotemporal connections among the wind farms by employing a conditional density function calculated using multidimensional copula function. The empirical study of real wind power measurement shows how the wind power outputs are correlated and how these correlations affect the overall uncertainty of clustered wind power output. The case study validates the simulation technique by comparing the simulated results with the real measurements.

The Effect of Work-Family Culture on Bidirectional Work-Family Enrichment : Focused on Mediating Effect of Work-Engagement

Zhang Li Jun,장효용,Li Wen Ning 원광대학교 한중관계연구원 2019 韓中關係硏究 Vol.5 No.2

본 연구의 목적은 일-가정문화가 쌍방향 일-가정 충실에 미치는 영향을 연구하고, 일-가정문화와 쌍방향 일-가정 충실 간의 일-몰입의 매개효과를 검증한다. 본 연구는 중국 일반 직원에 대한 설문조사를 통해 유효한 설문지 380부를 수집한다. 주로 SPSS23.0과 AMOS23.0 소프트웨어를 사용하여 데이터를 검증적 인자 분석과 탐색적 인자 분석을 수행하였다. 기존의 일-가정 관계에 관한 연구는 일-가정 충돌과 같은 부 정적인 방향으로 집중되었다. 본 연구는 일-가정 충실에 대한 연구 대상으로서 긍정적 인 결과에 대한 연구를 풍부하게 하여, 기존의 연구의 부족을 보완하였다. 선행연구는 주로 일에 대한 가정의 충실 방향에 집중되어 있는데 가정에 대한 일의 충실 방향을 등한하였다. 본 연구는 일-가정 문화와 쌍방향 일-가정 충실을 연구 대상으로 하여 선 행연구 부족한 점을 보완하였다. 연구를 통해 일-가정 문화가 쌍방향 일-가정 충실에 모두 현저한 영향을 미친다는 것을 발견했다; 일-몰입은 일-가정 문화와 쌍방향 일-가 정 충실사이에서 중개 역할을 한다. 대다수 중국 기업에 대해 긍정적인 견지에서 일-가 정문화로써 근로자의 일-가정 충실의 메커니즘과 직원의 개인별 차이를 기초로 직원의 일-가정 충실을 위해 효과적인 촉진 대책을 제공하였다. This study aims to explore the influence of work-family culture on the bidirectional work-family enrichment, so as to verify the mediating role of work-engagement between work-family culture and bidirectional work-family enrichment. In this study, 380 valid questionnaires were collected through questionnaire survey on ordinary Chinese employees. Statistical software SPSS 23.0 and AMOS 23.0 were used to conduct confirmatory factor analysis and exploratory factor analysis. Previous studies on work-family relationship mainly focus on negative aspects such as work-family conflict. This study takes work-family enrichment as the research object, which enriches the research on positive results and makes up the deficiency of previous studies. In the past, the research mainly focused on the direction of work-to-family enrichment and ignored the direction of family-to-work enrichment. This study takes work-family culture and bidirectional work-family enrichment as research objects, which makes up for the deficiency of previous studies. The results show that work-family culture has a significant effect on the bidirectional work-family enrichment; Work-engagement mediates between work-family culture and bidirectional work-family enrichment. For most Chinese companies, from a positive perspective and on basis of the mechanism of work-family culture applied to employee’s work-family enrichment and the individual differences of the employees, it provides effective promotion measures for achieving the employee’s work-family enrichment.

Sorption behavior of Eu(III) on Tamusu clay under strong ionic strength: Batch experiments and BSE/EDS analysis

Zhang, Han,He, Hanyi,Liu, Jun,Li, Honghui,Zhao, Shuaiwei,Jia, Meilan,Yang, Jijun,Liu, Ning,Yang, Yuanyou,Liao, Jiali Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.1

The europium sorption on Tamusu clay was investigated by batch sorption experiments and spectroscopic study under the condition of strong ionic strength. The results demonstrated that europium sorption on Tamusu clay increased rapidly with pH value, but decreased with the ionic strength of solution increased. The europium sorption also increased in the presence of humic acid, especially at low pH value. The sorption could be fitted by Freundlich isotherm model and the europium sorption on clay was spontaneous and endothermic reaction. Besides, the result indicates that ion exchange was the main process at low pH value, while inner-sphere surface complexation dominated the sorption process at high pH value. The Backscatter electron scanning/Energy Dispersive Spectrometer(BSE/EDS) and the effect of Na for europium sorption results further suggested that europium sorption on Tamusu clay mainly competed with Na at low pH value. Overall, the results in this research were of significance to understand the sorption behavior of europium on the geological media under high ionic strength.

Predictive Potential of Glutathione S-Transferase Polymorphisms for Prognosis of Osteosarcoma Patients on Chemotherapy

Zhang, Shai-Lin,Mao, Ning-Fang,Sun, Jun-Ying,Shi, Zhi-Cai,Wang, Bing,Sun, Yong-Jian Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.6

Objective: To evaluate the predictive value of glutathione S-transferase (GST) gene polymorphisms for the prognosis of osteosarcoma patients receiving chemotherapy. Methods: A total of 159 patients were included in our study between January 2005 and December 2007., with follow-up until January 2012. Genotyping was based upon the duplex polymerase-chain-reaction with the PCR-CTPP method. Results: At the time of diagnosis, 15.4% of the patients presented with metastasis, while 22.3% developed metastasis during follow-up. At the time of final analysis on January 2012, the median follow-up was 45.5 months. Patients with null GSTM1 and GSTT1 had a higher event free survival rate than non-null genotype, but no significant association was found between the two genotypes and prognosis of osteosarcoma. Individuals with GSTP1 Val/Val genotype tended to live shorter than with the IIe/IIe genotype, and we found a significantly higher risk of death from osteosarcoma (adjusted HR=2.35, 95% CI=1.13-4.85). Conclusion: The GSTP1 gene polymorphism may have an important role in the prognosis of osteosarcoma patients with chemotherapy. Further analyses with larger samples and more genes encoding metabolizing and DNA repair enzymes are warranted.

Prognostic Values of VEGF and Endostatin with Malignant Pleural Effusions in Patients with Lung Cancer

Zhang, Yu,Yu, Li-Ke,Lu, Guo-Jun,Xia, Ning,Xie, Hai-Yan,Hu, Wei,Hao, Ke-Ke,Xu, Chun-Hua,Qian, Qian Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.19

Aims: Angiogenesis is important in malignant pleural effusion (MPE) formation and it is regulated by a number of pro- and anti-angiogenic cytokines. The purpose of this study was to evaluate the prognostic value of angiogenic factor vascular endothelial growth factor (VEGF) and angiogenesis inhibitor endostatin in lung cancer patients with MPE, and investigate the relationship between these two kinds of agent. Methods: Using enzyme-linked immunoadsorbent assay, the concentrations of VEGF and endostatin were measured in pleural effusions (PE) and serum from a total of 70 lung cancer patients with MPE and 20 patients with tuberculosis. Results: Compared to patients with tuberculosis, the levels of VEGF and endostatin in both PE and serum were significantly higher in patients with lung cancer. There were statistically significant correlations between VEGF levels in PE and serum (r=0.696, p<0.001), endostatin levels in PE and serum (r=0.310, p=0.022), and VEGF and endostatin levels in PE (r=0.287, p=0.019). Cox multivariate analysis revealed that elevated pleural VEGF and endostatin levels and serum endostatin level were independent predictors of shorter overall survival. Conclusion: Both pro- and anti-angiogenic factors are likely contributors to PE formation. Our results suggest that the levels of VEGF and endostatin in PE, together with endostatin in serum, may be potential prognostic parameters for lung cancer patients with MPE.

MAGED4 Expression in Glioma and Upregulation in Glioma Cell Lines with 5-Aza-2'-Deoxycytidine Treatment

Zhang, Qing-Mei,Shen, Ning,Xie, Sha,Bi, Shui-Qing,Luo, Bin,Lin, Yong-Da,Fu, Jun,Zhou, Su-Fang,Luo, Guo-Rong,Xie, Xiao-Xun,Xiao, Shao-Wen Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8

Melanoma-associated antigen (MAGE) family genes have been considered as potentially promising targets for anticancer immunotherapy. MAGED4 was originally identified as a glioma-specific antigen. Current knowledge about MAGED4 expression in glioma is only based on mRNA analysis and MAGED4 protein expression has not been elucidated. In the present study, we investigated this point and found that MAGED4 mRNA and protein were absent or very lowly expressed in various normal tissues and glioma cell line SHG44, but overexpressed in glioma cell lines A172,U251,U87-MG as well as glioma tissues, with significant heterogeneity. Furthermore, MAGED4 protein expression was positively correlated with the glioma type and grade. We also found that the expression of MAGED4 inversely correlated with the overall methylation status of the MAGED4 promoter CpG island. Furthermore, when SHG44 and A172 with higher methylation were treated with the DNA demethylating agent 5-aza-2'-deoxycytidine (5-AZA-CdR) reactivation of MAGED4 mRNA was mediated by significant demethylation in SHG44 instead of A172. However, 5-AZA-CdR treatment had no effect on MAGED4 protein in both SHG44 and A172 cells. In conclusion, MAGED4 is frequently and highly expressed in glioma and is partly regulated by DNA methylation. The results suggest that MAGED4 might be a promising target for glioma immunotherapy combined with 5-AZA-CdR to enhance its expression and eliminate intratumor heterogeneity.