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npj Computational Materials 2021年第1期7卷 1842-1849页

作者： Fengyuan Xuan su ying Quek Centre for Advanced 2D Materials National University of Singapore6 Science Drive 2Singapore 117546Singapore Department of Physics National University of Singapore2 Science Drive 3Singapore 117551Singapore NUS Graduate School Integrative Sciences and Engineering Programme National University of SingaporeSingaporeSingapore Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore

Carrier-doped transition metal dichalcogenide(TMD)monolayers are of great interest in valleytronics due to the large Zeeman response(g-factors)in these spin-valley-locked materials,arising from many-body *** develop an ab initio approach based on many-body perturbation theory to compute the interaction-enhanced g-factors in carrier-doped *** show that the g-factors of doped WSe2 monolayers are enhanced by screened-exchange interactions resulting from magnetic-field-induced changes in band *** interaction-enhanced g-factors g*agree well with *** traditional valleytronic materials such as silicon,the enhancement in g-factor vanishes beyond a critical magnetic field Bc achievable in standard *** identify ranges of g*for which this change in g-factor at Bc leads to a valley-filling instability and Landau level alignment,which is important for the study of quantum phase transitions in doped *** further demonstrate how to tune the g-factors and optimize the valley-polarization for the valley Hall effect.

关键词： effect interaction critical

Progress in exosomes and their potential use in ocular diseases

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International Journal of Ophthalmology(English edition) 2020年第9期13卷 1493-1498页

作者： su-Fang Li ying Han Feng Wang ying su Ophthalmology Branch of the First Affiliated Hospital of Harbin Medical University Harbin 150001Heilongjiang ProvinceChina Gerontology Branch of the First Affiliated Hospital of Harbin Medical University Harbin 150001Heilongjiang ProvinceChina

Exosomes contain a variety of biological active substances such as proteins,miRNAs,lncRNAs and lipids,and exosomes from different cells play different biological ***,as a carrier,are involved in many pathological processes such as nerve injury and repair,vascular regeneration,immune response,and fibrosis *** plays an important role in the treatment of eye diseases such as glaucoma,diabetic retinopathy,and *** paper reviews the research progress of exosomes in various diseases in vivo,which provides a new way for the treatment of eye diseases.

关键词： exosomes ocular diseases progress treatment

Tunable parity-time symmetry vortex laser from a phase change material-based microcavity

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Microsystems & Nanoengineering 2023年第6期9卷 273-280页

作者： ying su Hongji Fan Shitong Zhang Tun Cao School of Optoelectronic Engineering and Instrumentation Science Dalian University of TechnologyDalian 116024China School of Science and Letters UC Davis21005th StDavisCA 95618USA

Traditional light sources cannot emit an electromagnetic(EM)field with an orbital angular momentum(OAM),limiting their applications in modern *** recent development of the OAM laser,mainly based on micro-and nanostructures,can satisfy the increasing requirements for on-chip photonics and information ***,the photonic structures have fixed parameters that prevent these OAM lasers from being dynamically ***,we propose tunable vortex lasing from a microring cavity integrated by a phase change material,Ge_(2)Sb_(2)Te_(5)(GST225).By modulating the complex refractive index to create an exceptional point(EP)to break the degeneracy of whispering gallery modes with opposite orientations,the microlaser working at the EP can impart an artificial angular momentum,thus emitting vortex beams with well-defined *** grating scatter on the edge of the microring can provide efficient vertical *** vortex laser wavelength from the GST225/InGaAsP dual-layered microring cavity can be dynamically tuned by switching the state of GST225 between amorphous and crystalline without changing the microring *** construct an electric-thermal model to show the tuning range of operating wavelengths(EPs)from 1544.5 to 1565.9 nm in~25 *** study on high-speed tunable PT-symmetry vortex lasers facilitates the next generation of integrated optoelectronic devices for optical computing and communications in both classical and quantum regions.

关键词： tuning symmetry vortex

Protecting geometric quantum discord via partially collapsing measurements of two qubits in multiple bosonic reservoirs

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Chinese Physics B 2022年第4期31卷 163-169页

作者： Xue-Yun Bai su-ying Zhang Institute of Theoretical Physics and State Key Laboratory of Quantum Optics and Quantum Optics Devices Shanxi UniversityTaiyuan 030006China

We study the dynamics of geometric quantum discord(GQD) between two qubits,each qubit interacting at the same time with K independent multiple bosonic reservoirs at zero *** both weak and strong qubit-reservoirs coupling regimes,we find that the increase of the number K of reservoirs can induce the damped oscillation of GQD,and enhance the memory effects of the overall *** the Hilbert-Schmidt norm GQD(two-norm GQD) is always smaller than the trace norm geometric quantum discord(one-norm GQD).Therefore,the one-norm GQD is a better way to measure the quantum ***,we propose an effective strategy to improve GQD by using partially collapsing measurements,and we find that the protection effect is better with the increase of the weak measurement strength.

关键词： geometric quantum discord(GQD) the Hilbert-Schmidt norm GQD the trace norm GQD partially collapsing measurements

Interferometry signatures of hydrodynamic sources with fluctuating initial conditions

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Nuclear Science and Techniques 2013年第5期24卷 117-121页

作者： HU ying su Zhongqian ZHANG Weining School of Physics and Optoelectronic Technology Dalian University of Technology

We investigate the space-time evolution of the hydrodynamic particle-emitting sources with the fluctuating initial conditions generated by Heavy Ion Jet Interaction Generator(HIJING).In order to detect the event-by-event inhomogeneity of the sources,we examine the distribution of the error-inverse-weighted fluctuations,f,between the two-pion Bose-Einstein correlation functions of single and mixed *** find that the distribution of f becomes wide for the fluctuating initial *** large values of the distribution width and the root-mean-square frms are the signatures of the hydrodynamic particle-emitting sources with the fluctuating initial conditions.

关键词：波动签名水动力流体动力学粒子发射源干涉时空演变相互作用

Numerical analysis for the effcacy of nasal surgery in obstructive sleep apnea hypopnea syndrome

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Acta Mechanica Sinica 2014年第2期30卷 250-258页

作者： Shen Yu ying-Xi Liu Xiu-Zhen sun ying-Feng su ying Wang Yin-Zhe Gai State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Department of Otorhinalaryngology The Second Affiliated Hospital of Dalian Medical University

In the present study, we reconstructed upper airway and soft palate models of 3 obstructive sleep apnea-hypopnea syndrome（OSAHS） patients with nasal obstruction. The airflow distribution and movement of the soft palate before and after surgery were described by a numerical simulation method. The curative effect of nasal surgery was evaluated for the three patients with OSAHS. The degree of nasal obstruction in the 3 patients was improved after surgery. For 2 patients with mild OSAHS, the upper airway resistance and soft palate displacement were reduced after surgery. These changes contributed to the mitigation of respiratory airflow limitation. For the patient with severe OSAHS, the upper airway resistance and soft palate displacement increased after surgery, which aggravated the airway obstruction. The effcacy of nasal surgery for patients with OSAHS is determined by the degree of improvement in nasal obstruction and whether the effects on the pharynx are beneficial. Numerical simulation results are consistent with the polysomnogram（PSG） test results, chief complaints, and clinical findings, and can indirectly reflect the degree of nasal patency and improvement of snoring symptoms, and further,provide a theoretical basis to solve relevant clinical problems.

关键词： Nasal surgery Obstructive sleep apnea hypop-nea syndrome Fluid-solid interaction Numerical analysis

Modeling data quality for risk assessment of GIS

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Journal of Southeast University(English Edition) 2008年第S1期24卷 37-42页

作者： su, ying Jin, Zhanming Peng, Jie Institute of Scientific and Technical Information of China Beijing 100038 China School of Economics and Management Tsinghua University Beijing 100084 China

This paper presents a methodology to determine three data quality (DQ) risk characteristics: accuracy, comprehensiveness and nonmembership. The methodology provides a set of quantitative models to confirm the information quality risks for the database of the geographical information system (GIS). Four quantitative measures are introduced to examine how the quality risks of source information affect the quality of information outputs produced using the relational algebra operations Selection, Projection, and Cubic Product. It can be used to determine how quality risks associated with diverse data sources affect the derived data. The GIS is the prime source of information on the location of cables, and detection time strongly depends on whether maps indicate the presence of cables in the construction business. Poor data quality in the GIS can contribute to increased risk or higher risk avoidance costs. A case study provides a numerical example of the calculation of the trade-offs between risk and detection costs and provides an example of the calculation of the costs of data quality. We conclude that the model contributes valuable new insight.

关键词： risk assessment data quality geographical information system probability spatial data quality

The Effect of Wet-grinding on the Properties of Glass Powder and Its Application in Cement Based Materials

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1372-1381页

作者： WANG yingbin YANG Jie su ying HE Xingyang STRNADEL Bohumir School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan 430068China Center for Advanced and Innovative Technologies VSB-Technical University of OstravaOstrava-Poruba 70833Czech Republic

To improve the pozzolanic reactivity,waste glass(WG)needs to be micronized to fine particles so as to expedite the leaching of active *** key feature of this work is to examine the effect of wet-grinded WG on the mechanical and structural properties of cement based *** experimental results show that wet-grinding can improve the ions leaching behavior of WGP and decrease the stability of silicon oxide *** pozzolanic reactivity of WGP was dramatically enhanced after wet-grinding,as high as 144.1%at 1 d and 110.9%at 28 d when the mean grain size of WGP reached 0.90μ*** ground WGP can promote the transformation of capillary pores to gel pores to improve the compactness of microstructure regardless of the reaction time.

关键词： supplementary cementitious materials pozzolanic reactivity wet-grinding compressive strength

Automated Machine Learning Algorithm Using Recurrent Neural Network to Perform Long-Term Time Series Forecasting

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Computers, Materials & Continua 2024年第3期78卷 3529-3549页

作者： ying su Morgan C.Wang Shuai Liu Department of Statistics and Data Science University of Central FloridaOrlandoFL32816-2370USA School of Mathematics and Statistics Beijing Technology and Business UniversityBeijing100048China

Long-term time series forecasting stands as a crucial research domain within the realm of automated machine learning(AutoML).At present,forecasting,whether rooted in machine learning or statistical learning,typically relies on expert input and necessitates substantial manual *** manual effort spans model development,feature engineering,hyper-parameter tuning,and the intricate construction of time series *** complexity of these tasks renders complete automation unfeasible,as they inherently demand human intervention at multiple *** surmount these challenges,this article proposes leveraging Long Short-Term Memory,which is the variant of Recurrent Neural Networks,harnessing memory cells and gating mechanisms to facilitate long-term time series ***,forecasting accuracy by particular neural network and traditional models can degrade significantly,when addressing long-term time-series ***,our research demonstrates that this innovative approach outperforms the traditional Autoregressive Integrated Moving Average(ARIMA)method in forecasting long-term univariate time *** is a high-quality and competitive model in time series prediction,and yet it requires significant preprocessing *** multiple accuracy metrics,we have evaluated both ARIMA and proposed method on the simulated time-series data and real data in both short and long ***,our findings indicate its superiority over alternative network architectures,including Fully Connected Neural Networks,Convolutional Neural Networks,and Nonpooling Convolutional Neural *** AutoML approach enables non-professional to attain highly accurate and effective time series forecasting,and can be widely applied to various domains,particularly in business and finance.

关键词： Automated machine learning autoregressive integrated moving average neural networks time series analysis

Spatial Distribution Assessment and Source Apportionment of Land-Based Pollutant Yield from Qingdao, China

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Journal of Ocean University of China 2019年第1期18卷 151-158页

作者： su ying LIANG Shengkang ZHANG Peng WANG Xiulin Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Chemistry and Chemical Engineering Department Ocean University of China Environmental Science and Engineering Department Ocean University of China

The spatial distribution of chemical oxygen demand(COD) and total nitrogen(TN) yield from Qingdao are studied by comparing pollutant yield amount, densities and spatial aggregation(Getis-Ord indexes) among the land-based pollutant source regions(PSRs) entering the three sub-seas(i.e. the Jiaozhou Bay(JZB), other coastal area in the Yellow Sea(OCAYS) and Laizhou Bay(LZB), respectively). Industrial composition of the loads are also studied by comparing pollutant yield among the sources of agriculture, rural domesticity, industry, urban domesticity and service, and calculation of Gini coefficient. Results show that spatial distribution of COD and TN yield from Qingdao are extremely unbalanced. The JZB, with less than 3% of the total coastal sea area of Qingdao, received 62% COD load and 65% TN yield from Qingdao, while the OCAYS, with more than 97% area, only received 23% COD and 20% TN, which consist with the much worsen water quality of JZB than that of OCAYS. On the other hand, the source apportionment of COD and TN loads in the PSRs entering JZB and the OCAYS was similar. The agricultural and domestic sources with high pollution intensity account for more than 80%, while the industrial and service sources with low pollution intensity account for less than 20%. While Gini coefficients, COD 0.81 and TN 0.84 which are much higher than the ‘imbalance' threshold of 0.4, show the uneven industrial structure of Qingdao. These results may be useful in the determination of land-based pollution total amount control at the PSR level.

关键词： Qingdao land-based pollutant pollutant yield pollution intensity industrial structure