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Perturbed Pricing [article]

Neil Walton, Yuqing Zhang
2020 arXiv   pre-print
ACKNOWLEDGMENT Yuqing Zhang gratefully acknowledges the support of the China Scholarship Council.  ... 
arXiv:2010.12300v1 fatcat:7snr4z3vyncwfpo66yisqj7fuq

Multiplicative Diophantine Exponents of Hyperplanes [article]

Yuqing Zhang
2008 arXiv   pre-print
We study multiplicative Diophantine approximation property of vectors and compute Diophantine exponents of hyperplanes via dynamics.
arXiv:0809.0386v1 fatcat:lexidlwfbngp5jf3fp43qxigma

Ultrabright gap-enhanced Raman tags for high-speed bioimaging

Yuqing Zhang, Yuqing Gu, Jing He, Benjamin D. Thackray, Jian Ye
2019 Nature Communications  
Surface-enhanced Raman spectroscopy (SERS) is advantageous over fluorescence for bioimaging due to ultra-narrow linewidth of the fingerprint spectrum and weak photo-bleaching effect. However, the existing SERS imaging speed lags far behind practical needs, mainly limited by Raman signals of SERS nanoprobes. In this work, we report ultrabright gap-enhanced Raman tags (GERTs) with strong electromagnetic hot spots from interior sub-nanometer gaps and external petal-like shell structures, larger
more » ... obilization surface area, and Raman cross section of reporter molecules. These GERTs reach a Raman enhancement factor beyond 5 × 109 and a detection sensitivity down to a single-nanoparticle level. We use a 370 μW laser to realize high-resolution cell imaging within 6 s and high-contrast (a signal-to-background ratio of 80) wide-area (3.2 × 2.8 cm2) sentinel lymph node imaging within 52 s. These nanoprobes offer a potential solution to overcome the current bottleneck in the field of SERS-based bioimaging.
doi:10.1038/s41467-019-11829-y pmid:31467266 pmcid:PMC6715656 fatcat:azau7zvuevabpnmu3m4xngrs3u

Raman photostability of off-resonant gap-enhanced Raman tags

Yuqing Gu, Yuqing Zhang, Yi Li, Xiulong Jin, Chengjun Huang, Stefan A. Maier, Jian Ye
2018 RSC Advances  
Off-resonant gap-enhanced Raman tags (GERTs) show ultrahigh Raman enhancement and photostabilities and therefore can be used as ideal highly photostable nanoprobes for high-speed and high-resolution Raman bioimaging.
doi:10.1039/c8ra02260g pmid:35540756 pmcid:PMC9079950 fatcat:fd6movck5jgfnbybt3clijmz3i

The maximum forcing number of polyomino [article]

Liqiong Xu, Yuqing Lin, Fuji Zhang
2014 arXiv   pre-print
Recently, Xu,Bian and Zhang [17] showed that when G is an elementary hexagonal system, the maximum forcing number of G can be computed in polynomial time.  ...  Later, Abeledo and Atkinson [20] proved that: Using Theorems 1,2,3 and 4, Xu,Bian and Zhang [17] proved that the maximum forcing number of an elementary hexagonal system equals to its Clar number,  ... 
arXiv:1410.0747v1 fatcat:vdzepplngbdefguau4lim6zx6m

Multiplicative Transference Principle [article]

Yuqing Zhang
2009 arXiv   pre-print
This paper has been withdrawn by the author.
arXiv:0906.2722v3 fatcat:n43pnyhwkrcddeqzvqap5shjla

Monotonic Tree [chapter]

Yuqing Song, Aidong Zhang
2002 Lecture Notes in Computer Science  
Contour trees have been used in geographic information systems (GIS) and medical imaging to display scalar data. Contours are only defined for continuous functions. For an image represented by discrete data, a continuous function is first defined as an interpolation of the data. Then the contour tree is defined on this continuous function. In this paper, we introduce a new concept termed monotonic line, which is directly defined on discrete data. All monotonic lines in an image form a tree,
more » ... ed monotonic tree. As compared with contour trees, monotonic trees avoid the step of interpolation, thus can be computed more efficiently. Monotonic tree can also be used as a hierarchical representation of image structures in computer imagery.
doi:10.1007/3-540-45986-3_10 fatcat:frznhcfnqfbxbbaiyhcdttgv3m

Covariate-Adjusted Tensor Classification in High-Dimensions [article]

Yuqing Pan, Qing Mai, Xin Zhang
2018 arXiv   pre-print
Moreover, many existing statistical methods on tensor data rely on multi-linear tensor decomposition (Kolda & Bader 2009 , Chi & Kolda 2012 , Liu et al. 2017 , Zhang & Xia 2017 that assumes low-rank  ... 
arXiv:1805.04421v1 fatcat:zflwreuqvragpd5uwtvchvxxbi

Attack-Defense Quantification Based On Game-Theory [article]

Su Yang, Yuqing Zhang, Chensi Wu
2019 arXiv   pre-print
With the developing of the attack and defense technology, the cyber environment has been more and more sophisticated. We failed to give an accurate evaluation of network security situation, as we lack a more accurate quantitative evaluation of attack-defense behaviors. In response to this situation, we proposed an attack-defense stochastic game model (ADSGM), analyzed the different security property of distinct defense mechanism, and put forward a corresponding utility calculation coping with
more » ... e distinct defense mechanism. Through a case study, we showed the impact of active defense and the risk of attack exposure, demonstrated the effectiveness of our methods on attack-defense behavior quantification. This paper filled with the gap in the quantitative assessment of defensive measures, to make the quantitative evaluation of attack-defense more comprehensive and accurate.
arXiv:1902.10439v1 fatcat:jvxim5digraqrcrnlrfbv5pnju

Qigong for Hypertension

Xingjiang Xiong, Pengqian Wang, Xiaoke Li, Yuqing Zhang
2015 Medicine  
The purpose of this review was to evaluate the efficacy and safety of qigong for hypertension. A systematic literature search was performed in 7 databases from their respective inceptions until April 2014, including the Cochrane Library, EMBASE, PubMed, Chinese Scientific Journal Database, Chinese Biomedical Literature Database, Wanfang database, and Chinese National Knowledge Infrastructure. Randomized controlled trials of qigong as either monotherapy or adjunctive therapy with
more » ... drugs versus no intervention, exercise, or antihypertensive drugs for hypertension were identified. The risk of bias was assessed using the tool described in Cochrane Handbook for Systematic Review of Interventions, version 5.1.0. Twenty trials containing 2349 hypertensive patients were included in the meta-analysis. The risk of bias was generally high. Compared with no intervention, qigong significantly reduced systolic blood pressure (SBP) (weighted mean difference [WMD] ¼ À17.40 mm Hg, 95% confidence interval [CI] À21.06 to À13.74, P < 0.00001) and diastolic blood pressure (DBP) (WMD ¼ À10.15 mm Hg, 95% CI À13.99 to À6.30, P < 0.00001). Qigong was inferior to exercise in decreasing SBP (WMD ¼ 6.51 mm Hg, 95% CI 2.81 to 10.21, P ¼ 0.0006), but no significant difference between the effects of qigong and exercise on DBP (WMD ¼ 0.67 mm Hg, 95% CI À1.39 to 2.73, P ¼ 0.52) was identified. Compared with antihypertensive drugs, qigong produced a clinically meaningful but not statistically significant reduction in SBP (WMD ¼ À7.91 mm Hg, 95% CI À16.81 to 1.00, P ¼ 0.08), but appeared to be more effective in lowering DBP (WMD ¼ À6.08 mm Hg, 95% CI À9.58 to À2.58, P ¼ 0.0007). Qigong plus antihypertensive drugs significantly lowered both SBP (WMD ¼ À11.99 mm Hg, 95% CI À15.59 to À8.39, P < 0.00001) and DBP (WMD ¼ À5.28 mm Hg, 95% CI, À8.13 to À2.42, P ¼ 0.0003) compared with antihypertensive drugs alone. No serious adverse events were reported. The meta-analysis suggests that qigong is an effective therapy for hypertension. However, more rigorously designed randomized controlled trials with long-term follow-up focusing on hard clinical outcomes are required to confirm the results. (Medicine 94(1):e352) Abbreviations: AE = adverse event, BP = blood pressure, CAM = complementary and alternative medicine, CI = confidence interval, DBP = diastolic blood pressure, QOL = quality of life, RCT = randomized controlled trial, SBP = systolic blood pressure, TCM = traditional Chinese medicine, WMD = weighted mean difference. All studies focused on the effect of qigong on hypertensive patients. A subgroup analysis was conducted among 4 different types of comparisons, including qigong versus no
doi:10.1097/md.0000000000000352 pmid:25569652 pmcid:PMC4602820 fatcat:xka53jqxajefpclmfz7dfoj3oa

Diophantine Exponents of Affine Subspaces: The Simultaneous Approximation Case [article]

Yuqing Zhang
2008 arXiv   pre-print
We apply nondivergence estimates for flows on homogeneous spaces to compute Diophantine exponents of affine subspaces of ^n and their nondegenerate submanifolds.
arXiv:0809.0176v1 fatcat:t64rmorjkvefnivenhuhidudiy

Research on the Output Characteristics of Microfluidic Inductive Sensor

Xingming Zhang, Hongpeng Zhang, Yuqing Sun, Haiquan Chen, Yindong Zhang
2014 Journal of Nanomaterials  
This paper focuses on the output characteristic of the microfluidic inductive sensor. First the coil-metal particle system model is established from Maxwell's equations. Then series solution is achieved by solving partial differential equation. Finally the numerical simulations and physical experiments are compared on particle feature, particle size, excitation frequency, coil turns, and coil density. The experiments coincide well with the simulations.
doi:10.1155/2014/725246 fatcat:q7rdskkpnrajlguaf6dbuj3waa

On the anti-forcing number of fullerene graphs [article]

Qin Yang, Heping Zhang, Yuqing Lin
2015 arXiv   pre-print
Zhang, Ye and Shiu [14] proved that the minimum forcing number of fullerenes has a lower bound 3 and there are infinitely many fullerenes achieving this bound.  ... 
arXiv:1503.01900v1 fatcat:nhlxp45xuzbalp2jli7goxoa4i

Tunable and Passively Mode-Locking Nd0.01:Gd0.89La0.1NbO4 Picosecond Laser

Shande Liu, Yuqing Zhao, Ke Zhang, Bo Chen, Ning Zhang, Dehua Li, Huiyun Zhang, Yuping Zhang, Lihua Wang, Shoujun Ding, Qingli Zhang
2021 Molecules  
(Yuqing Zhao); supervision, D.L., L.W. and S.D.; project administration, H.Z Y.Z. (Yuping Zhang).  ...  (Yuqing Zhao); supervision, D.L., L.W. and S.D.; project administration, H.Z. and Y.Z. (Yuping Zhang). All authors have read and agreed to the published version of the manuscript.  ... 
doi:10.3390/molecules26113179 pmid:34073314 fatcat:j6fhebhsrzetheny5neux7ooge

Privacy Preserving Association Rule Mining: Taxonomy, Techniques, and Metrics

Lili Zhang, wenjie wang, Yuqing Zhang
2019 IEEE Access  
YUQING ZHANG received the Ph.D. degree in cryptography from Xidian University, Xi'an, China, in 2000.  ...  LILI ZHANG received the M.S. degree in cryptography from Xidian University, Xi'an, China, in 2008, where she is currently pursuing the Ph.D. degree with the National Key Laboratory of Integrated Services  ... 
doi:10.1109/access.2019.2908452 fatcat:xgxwxkusgngv5l6dk2fulxfi4m
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