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Free vibration of the water-filled single-walled carbon nanotubes

Yan Yan, Wenquan Wang, Jianming Zhang, Lixiang Zhang
2012 Procedia Engineering  
For instance, Yan et al. [1, 2] and Wang et al. [3] as well as Khosravian et al.  ... 
doi:10.1016/j.proeng.2012.01.1080 fatcat:gv3sn77yejbepdruvjbpicxvxe

Liutex-based Modified Navier-Stokes Equation [article]

Yifei Yu, Jianming Liu, Yonghua Yan, Yiqian Wang, Yisheng Gao, Chaoqun Liu
2020 arXiv   pre-print
The Navier-Stokes (NS) partial differential equations, as the governing equation of fluid dynamics, are based on particles with zero volume. In such a condition, conservation law of moment of momentum is automatically satisfied, and thus NS equations only contain conservation of mass, momentum and energy. Because of the difficulty to get an analytical solution of NS equations, scientists develop finite element method (FEM) and finite volume method (FVM) to obtain approximate solutions. However,
more » ... these methods are dependent on the size of finite volumes, which is not zero. Considering the size of the finite volume, conservation law of moment of momentum is no longer automatically satisfied and it is necessary to develop a new control equation to take effect of momentum into account. In this paper, new relations of reciprocal shear stresses are derived from conservation law of moment of momentum, and so are new constitutive relations and modified NS equations. The Liutex based NS equation may be the universal governing equations for both laminar and turbulent flow which is dominated by vortices and conservation of moment of momentum must be satisfied.
arXiv:2008.06784v1 fatcat:v63p6lvfebhefnpqfd4yoxjkfi

Normality criteria and multiple values II

Yan Xu, Jianming Chang
2011 Annales Polonici Mathematici  
Let F be a family of meromorphic functions defined in a domain D, let ψ ( ≡ 0, ∞) be a meromorphic function in D, and k be a positive integer. If, for every f ∈ F and z ∈ D, (1) f = 0, f (k) = 0; (2) all zeros of f (k) − ψ have multiplicities at least (k + 2)/k; (3) all poles of ψ have multiplicities at most k, then F is normal in D.
doi:10.4064/ap102-1-9 fatcat:miojkyqsu5hm7dbww337zenh4m

MARKOWITZ'S PORTFOLIO OPTIMIZATION IN AN INCOMPLETE MARKET

Jianming Xia, Jia-An Yan
2006 Mathematical Finance  
Yan was supported by the Ministry of Science and Technology, the 973 Project on Mathematics.  ...  YAN J. XIA AND J.-A. YAN  ... 
doi:10.1111/j.1467-9965.2006.00268.x fatcat:w7c23wuuz5fzhf5fef62jixaky

Microstructure and Fracture Toughness of Fe–Nb Dissimilar Welded Joints

Qiaoling Chu, Lin Zhang, Tuo Xia, Peng Cheng, Jianming Zheng, Min Zhang, Jihong Li, Fuxue Yan, Cheng Yan
2021 Metals  
The relation between the microstructure and mechanical properties of the Fe–Nb dissimilar joint were investigated using nanoindentation. The weld metal consists mainly of Fe2Nb, α-Fe + Fe2Nb, Nb (s,s) and Fe7Nb6 phases. Radial cracks initiate from the corners of the impressions on the Fe2Nb phase (~20.5 GPa) when subjected to a peak load of 300 mN, whereas the fine lamellar structures (α-Fe + Fe2Nb) with an average hardness of 6.5 GPa are free from cracks. The calculated fracture toughness of
more » ... e Fe2Nb intermetallics is 1.41 ± 0.53 MPam1/2. A simplified scenario of weld formation together with the thermal cycle is proposed to elaborate the way local phase determined the mechanical properties.
doi:10.3390/met11010086 fatcat:xgugczxjxrgnziffulqckixzou

Locating segmentation regions of connected handwritten digits [chapter]

Jianming Hu, Hong Yan
1998 Lecture Notes in Computer Science  
Segmentation of handwritten touching characters is an important research topic in Optical Character Recognition (OCR). Finding the initial candidate segmentation points is the first important step. A method is described to locate the initial candidate segmentation regions based on the boundary analysis of a character string. This method can reduce the redundant searching regions significantly. Therefore, the segmentation reliability can be increased and the segmentation time can be reduced.
doi:10.1007/bfb0033273 fatcat:kqvonr45enfh7cpe3taghwkh5e

SAR codes

B. M. Hochwald, D. J. Love, Su Yan, Jianming Jin
2013 2013 Information Theory and Applications Workshop (ITA)  
SAR codes are designed for transmission by a portable wireless device to provide high reliability and data rates on a wireless channel, while maintaining low human exposure to electromagnetic radiation. We provide design criteria and examples of SAR codes and show that a 3 dB reduction in exposure is within reach on some devices versus standard single-antenna methods or spacetime codes. This reduction in exposure can be used to boost the transmitted power and extend the usable range of a
more » ... e device while maintaining a prescribed exposure level.
doi:10.1109/ita.2013.6502942 dblp:conf/ita/HochwaldLYJ13 fatcat:7brkxwi6wrgwnn6vkmr5gp2jyu

Content-based route lookup using CAMs

Yan Sun, Norbert Egi, Guangyu Shi, Jianming Wu
2012 2012 IEEE Global Communications Conference (GLOBECOM)  
The applications of the Internet have evolved from being host-centric to being more content-oriented, such as file sharing, online audio and video applications, which constitute the majority of Internet traffic [1] . Several future Internet architectures, putting the content (or information) in the forefront, have lately been proposed in order to solve the limitations of the current architecture (i.e. insufficient bandwidth to servers, lack of security, mobility, virtualization, user/data
more » ... city, etc.). However, one of the greatest challenges of a novel contentoriented Internet architecture lies in the complexity of looking up long, variable length names compared to the current 32 bit long IPv4 (or even 128 bit IPv6) addresses of today's networks. The success of widely adopting any content-oriented architecture highly depends on the success of designing algorithms that allow these complex names to be looked up at high-speed. Ternary Content Addressable Memories (TCAMs) are widely used in high-speed routers to find matching routes for packets in a routing table. They enable the longest prefix matching (LPM) operation on fixed length addresses to complete in a single clock cycle, however, they are not efficient to store and lookup name prefixes with variable lengths such as the ones proposed in namebased routing [2]-[9]. In this paper, we propose an efficient namebased longest prefix matching algorithm for information-centric networks using TCAMs. In our algorithm, we split incoming prefixes in fixed blocks and subsequently hash these blocks for fixed length storage. Our approach is flexible to support both hierarchical name based routing lookup and flat name based routing lookup. In addition, our approach can be easily modified to support multiple matchings 1 instead of the longest prefix matching. The simulation results demonstrate that our approach is able to provide efficient name-based routing lookup even for the fastest backbone routers (i.e. 100+ Gbps).
doi:10.1109/glocom.2012.6503521 dblp:conf/globecom/SunESW12 fatcat:532as7x6fbh5pldvqihiqeayou

Phanerochaete chrysosporium strain B-22, a parasitic fungus infecting Meloidogyne incognita [article]

Bin Du, Yumei Xu, Hailong Dong, Li Yan, Jianming wang
2019 bioRxiv   pre-print
We characterized the parasitism by strain B-22 of Phanerochaete chrysosporium on the eggs, second stage juveniles (J2), and adult females of the root-knot nematode (Meloidogyne Incognita). Strain B-22 had a strong lethal effect against M. incognita J2. The highest corrected mortality was 71.9% at 3 × 108 conidia mL-1. The estimated LC50 value was 0.96 × 108 conidia mL-1. Strain B-22 parasitized M. incognita eggs 2 days after treatment, causing the depression and dissolution of egg shells. The
more » ... ngal spores parasitized J2 by gathering in the body wall, germinating to develop hyphae, and crossing the juvenile cuticle to dissolve it, thereby causing the shrinkage and deformation of the juvenile body wall. The spores and hyphae also attacked adult females, causing the shrinkage and dissolution of their bodies and leakage of contents in 5 days. Results of greenhouse experiments showed that different concentrations of P. chrysosporium effectively controlled different life stages of M. incognita and root knot symptoms in tomato plants. Moreover, the control efficacy increased with increasing conidial concentration; the best results were achieved with 3 × 108 cfu mL-1. In the roots, the highest inhibition rate was 84.61% for adult females, 78.91% for juveniles, 84.25% for the egg mass, and 79.48% for the gall index. The highest juvenile inhibition rate was 89.18% in the soil. Meanwhile, strain B-22 improved the plant growth. Thus, P. chrysosporium strain B-22 is safe for tomato plants while effectively parasitizing M. incognita, making it a promising biocontrol agent against M. incognita.
doi:10.1101/622472 fatcat:sx2ld7begjbvdfbxdnmpkpsnre

Structural boundary feature extraction for printed character recognition [chapter]

Jianming Hu, Donggang Yu, Hong Yan
1998 Lecture Notes in Computer Science  
In this paper, an algorithm is developed for printed character recognition based on boundary analysis. New boundary smoothing schemes have been proposed, which can reduce noise significantly. The extracted boundary features are invariant to character size and are convenient for recognition. The whole algorithm is based on the chain code of each boundary ~nd no floating operation is involved. The algorithm is tested with sample pages of a phone directory. Experimental results show that this algorithm is highly reliable and very fast.
doi:10.1007/bfb0033272 fatcat:my4ahrdcm5d77o7v2xsgpuhkee

Locating head and face boundaries for head–shoulder images

Jianming Hu, Hong Yan, Mustafa Sakalli
1999 Pattern Recognition  
Huang and Chen [8] used the greedy algorithm for the minimal energy process, and Lam and Yan [14] used a fast greedy algorithm to improve the computational cost.  ...  Tel.:#61 2 351-4824; Fax:#61 2 351-3847; e-mail: yan@ee.usyd.edu.au Fig. 1 . 1 The head and face boundary models. Fig. 2 . 2 The diagram for locating head boundary.  ... 
doi:10.1016/s0031-3203(98)00162-9 fatcat:r5xkmpnprve6lozid34qapcda4

Controller Design for Small Wind Generator with ADRC

Zhang Yanning, Cao Binggang, Kang Longyun, Xu jianming
2011 Procedia Environmental Sciences  
Fig 4 rotor speed controlled by ADRC Zhang Yanning et al. / Procedia Environmental Sciences 11 (2011) 1128 -1134 Author name / Procedia Environmental Sciences 00 (2011) 000-000  ... 
doi:10.1016/j.proenv.2011.12.170 fatcat:dqvlepjmp5am5k2j4ophzxwsny

Deformation Force Simulation of Lead Screw Cold Roll-beating

Yang Mingshun, Yuan Qilong, Li Yan, Zheng Jianming
2011 Procedia Engineering  
Lead-screw cold roll-beating is a new type of green near-shape plastic forming technology. The deformation force is of great importance, which not only can affect the strain & stress of the material but can provide important base for equipment design, verifying tool strength and making reasonable process. This paper focuses on preliminary study of deformation force based on simulation. Firstly, the principle of lead screw cold roll-beating is simply introduced, then the FEM mode in ABAQUS is
more » ... lt, then the normal stress, and tangential stress simulation of lead screw cold rollbeating is carried out, finally changes of the deformation force and its component-force to time are obtained, which can provide good basis for further study.
doi:10.1016/j.proeng.2011.08.958 fatcat:37zzvicpqjatphaylptbuxtehu

aPKC-ι/P-Sp1/Snail signaling induces epithelial-mesenchymal transition and immunosuppression in cholangiocarcinoma

Yawei Qian, Wei Yao, Tao Yang, Yan Yang, Yan Liu, Qi Shen, Jian Zhang, Weipeng Qi, Jianming Wang
2017 Hepatology  
Cholangiocarcinoma (CCA) is a highly malignant bile duct cancer that tends to invade and metastasize early. The epithelialmesenchymal transition (EMT) has been implicated in cancer cell invasion and metastasis, as well as in cancer cell evasion of host immunity. In this study, we investigated the interaction between atypical protein kinase C-iota (aPKC-i) and Snail in the regulation of EMT and its relationship to CCA immunosuppression. Our results demonstrated that aPKC-i, Snail, and
more » ... immunosuppressive cells were significantly up-regulated in CCA tumor tissues and linked to poor prognosis. aPKC-i induced EMT and immunosuppression by regulating Snail in vitro and in vivo, although aPKC-i did not directly interact with Snail in coimmunoprecipitation experiments. To further clarify the molecular interaction between aPKC-i and Snail in relation to EMT, quantitative iTRAQ-based phosphoproteomic analysis and liquid chromatography-tandem mass spectrometry were conducted to identify the substrates of aPKC-i-dependent phosphorylation. Combined with coimmunoprecipitation, we showed that specificity protein 1 (Sp1) was directly phosphorylated by aPKC-i on Ser59 (P-Sp1). Both Sp1 and P-Sp1 were upregulated in CCA tumor tissues and associated with clinicopathological features and poor prognosis in CCA patients. Moreover, using chromatin immunoprecipitation assays, we found that P-Sp1 regulated Snail expression by increasing Sp1 binding to the Snail promoter. P-Sp1 also regulated aPKC-i/Snail-induced EMT-like changes and immunosuppression in CCA cells. Our findings further indicated that CCA cells with EMT-like features appear to generate immunosuppressive natural T regulatory-like cluster of differentiation 4-positive (CD4 1 )CD25cells rather than to increase CD4 1 CD25 1 natural T regulatory cells, in part by mediating T regulatory-inducible cytokines such as transforming growth factor b1 and interleukin 2. Conclusion: These results demonstrate that aPKC-i promotes EMT and induces immunosuppression through the aPKC-i/P-Sp1/Snail signaling pathway and may be a potential therapeutic target for CCA. (HEPATOLOGY 2017;66:1165-1182.
doi:10.1002/hep.29296 pmid:28574228 fatcat:dcyqjxz54zh4xilaq2cob5ci7e

Clinical Features for Mild Hand, Foot and Mouth Disease in China

Baoyan Liu, Lin Luo, Shiyan Yan, Tiancai Wen, Wenjing Bai, Hongjiao Li, Guoliang Zhang, Xiaoying Lu, Yan Liu, Liyun He, Jianming Tang
2015 PLoS ONE  
Mild hand, foot and mouth disease (HFMD) is at a critical stage owing to its ease of communicability and a higher risk of developing severe complications and death. Clinical diagnosis of mild HFMD was made by the presenting symptoms and signs (symptoms in brief) alone. We aim to evaluate the frequencies of symptoms in a retrospective case series study. Methods We collected epidemiological, demographic, clinical, and laboratory data from outpatient and inpatient settings on the clinical data
more » ... house system. We principally described the frequencies of symptoms of mild HFMD. Correlations between symptoms with laboratoryconfirmed cases were then analyzed. Results The clinical data warehouse system included 3649 probable cases, between 2010 and 2012, of which 956 (26.20%) were laboratory confirmed. The peak incidence was identified in children 2 years of age. A total of 370 of the 956 laboratory confirmed cases (38.70%) were associated with enterovirus 71 (EV71). Logistic regression analysis adjusted for geographical variables, age, sex, month of onset, and time from onset to diagnosis showed that the clinical features constipation (P<0.0001; adjusted OR, 95%CI (2.99, 2.28-3.91)), and blisters (P<0.0001; adjusted OR, 95%CI (2.16,)) were positively correlated with the confirmed cases. Conclusions This is the largest case series study, including all the guideline-mentioned symptoms of mild HFMD. Our findings suggest that blisters and constipation should be considered as potential warning signs while front-line clinicians manage surges of children diagnosed with mild HFMD during a pandemic.
doi:10.1371/journal.pone.0135503 pmid:26302092 pmcid:PMC4547800 fatcat:d4gwtj6dfbhyzbsys3k4flvbpq
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