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International Journal of Ophthalmology(English edition) 2013年第2期6卷 211-215页

作者： Güngr Sobaci riza Güngr Gk.an zge Department of Ophthalmology GATA Medical School Ankara

AIM: To determine the effect of multiple injections of ranibizumab or bevacizumab on retinal nerve fiber layer (rNFL) and intraocular pressure (IOP) in patients with age-related macular degeneration (AMD). ·METHODS: This retrospective study includes 35 eyes of 35 patients treated with intravitreal bevacizumab (IVB, 1.25mg/0.05mL) and 30 eyes of 30 patients with intravitreal ranibizumab (IVr, 0.5mg/0.05mL) who had Fast rNFL analysis (Stratus TM ); IOP measurements were tak.n 30 minutes and 24 hours after each injection. rESULTS: The mean ages were 68.0±7.5 and 69.1±7.7 years in the IVr and IVB groups, respectively (P =0.55). They underwent (6.3±1.9) and (5.1±1.3) injections (P = 0.07) over (13.6±2.1) and (14.05±2.6) months (P =0.45) in the IVr and IVB groups, respectively. Changes in overall and temporal rNFL thick.ess in IVr-treated eyes (105.3± 6.9μm and 74.4±11.2μm) were not different from those in untreated eyes in the IVr group (104.6±8.4μm and 75.1±12.6μm) (P =0.57 and P =0.41, respectively). Similarly, overall and temporal rNFL thick.ess in IVB-treated eyes (105.8±8.1μm and 74.5±11.8μm) were not different from those in untreated eyes in the IVB group (104.6±8μm and 74.8±12.9μm) (P=0.42 and P=0.80, respectively). The frequencies of IOP rise (P=0.60) and changes in rNFL thick.ess from baseline (P =0.16) were comparable between groups. CONCLUSION: repeated intravitreal injection of ranibizumab or bevacizumab does not seem have adverse effects on rNFL thick.ess or IOP in wet AMD patients.

关键词： anti-VEGF bevacizumab ranibizumab retinal nerve fiber layer intraocular pressure adverse effect

k.rnel Density Estimation Based Multiphase Fuzzy region Competition Method for Texture Image Segmentation

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Communications in Computational Physics 2010年第8期8卷 623-641页

作者： Fang Li Michael k.ng Department of Mathematics East China Normal UniversityShanghai 200241China Centre for Mathematical Imaging and Vision and Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong Kong

In this paper,we propose a multiphase fuzzy region competition model for texture image *** the functional,each region is represented by a fuzzy membership function and a probability density function that is estimated by a nonparametric k.rnel density *** overall algorithm is very efficient as both the fuzzy membership function and the probability density function can be implemented *** apply the proposed method to synthetic and natural texture images,and synthetic aperture radar *** experimental results have shown that the proposed method is competitive with the other state-of-the-art segmentation methods.

关键词： Texture multiphase region competition k.rnel density estimation fuzzy membership function total variation

Exact Solution of Space-Time Fractional Coupled EW and Coupled MEW Equations Using Modified k.dryashov Method

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Communications in Theoretical Physics 2017年第7期67卷 49-56页

作者： k. r. raslan Talaat S. EL-Danaf k.alid k. Ali Mathematics Department Faculty of Science Al-Azhar University Mathematics Department Faculty of Science Ai-Azhar University Nasr City 11884 Cairo Egypt Faculty of Science Menoufia University Shebein E1-Koom Egypt

In the present paper, we established a traveling wave solution by using modified k.dryashov method for the space-time fractional nonlinear partial differential equations. The method is used to obtain the exact solutions for different types of the space-time fractional nonlinear partial differential equations such as, the space-time fractional coupled equal width wave equation(CEWE) and the space-time fractional coupled modified equal width wave equation(CMEW), which are the important soliton equations. Both equations are reduced to ordinary differential equations by the use of fractional complex transform and properties of modified riemann–Liouville derivative. We plot the exact solutions for these equations at different time levels.

关键词： fractional coupled EW fractional coupled MEW equations modified k.dryashov method

Shrink.ge Properties of Wool and Acrylic/Wool Plain k.itted Fabrics Treated with DC109

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Journal of China Textile University(English Edition) 1999年第2期16卷 61-67页

作者： Au k.F ng k.Y The Hong k.ng Polytechnic Univ Hong Kong Hong Kong

This paper examines the effects of shrink.- resist treatment, washing cycle and fabric tightness on the shrink.ge properties of plain k.itted fabrics made from 100% wool, acrylic/wool (50/50) and acrylic/wool (70/30). It was found that shrink.ges of both treated and untreated wool fabrics were negatively correlated to fabric tightness and exceeded the IWS shrink.ge limits (5% in length and 8 % in area) after 2 - 5A washing cycle. The effect of tightness was not as obvious with acrylic/wool (A/W) fabrics, but the shrink.ge was seen to increase with stages of washing cycle for untreated A/W fabrics with some exceeding IWS standard. By applying the DC 109 shrink.- resist solvent treatment, it was identified that by with higher percentage of acrylic fibre blended with wool, shrink.ge could be reduced considerably and within acceptable limits.

关键词： wool acrylic/wool shrink - resist treatment tightness factor washing cycle .

LOW-rANk.MATrIX COMPLETION WITH POISSON OBSErVATIONS VIA NUCLEAr NOrM AND TOTAL VArIATION CONSTrAINTS

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Journal of Computational Mathematics 2024年第6期42卷 1427-1451页

作者： Duo Qiu Michael k.ng Xiongjun Zhang School of Mathematics and Physics Wuhan Institute of TechnologyWuhan 430205China Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong Kong SARChina School of Mathematics and Statistics and Hubei k.y Laboratory of Mathematical Sciences Central China Normal UniversityWuhan 430079China

In this paper,we study the low-rank.matrix completion problem with Poisson observations,where only partial entries are available and the observations are in the presence of Poisson *** propose a novel model composed of the k.llback.Leibler(k.)divergence by using the maximum lik.lihood estimation of Poisson noise,and total variation(TV)and nuclear norm *** the nuclear norm and TV constraints are utilized to explore the approximate low-rank.ess and piecewise smoothness of the underlying matrix,*** advantage of these two constraints in the proposed model is that the low-rank.ess and piecewise smoothness of the underlying matrix can be exploited simultaneously,and they can be regularized for many real-world image *** upper error bound of the estimator of the proposed model is established with high probability,which is not larger than that of only TV or nuclear norm *** the best of our k.owledge,this is the first work.to utilize both low-rank.and TV constraints with theoretical error bounds for matrix completion under Poisson *** numerical examples on both synthetic data and real-world images are reported to corroborate the superiority of the proposed approach.

关键词： Low-rank.matrix completion Nuclear norm Total variation Poisson observations

MINIMAX PrOGrAMMIng UNDEr GENErALIZED （p, r）-INVEXITY

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Journal of Systems Science & Complexity 2007年第4期20卷 501-508页

作者： S. k. MISHrA Shouyang WAng k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China

Minimax programming problems involving generalized （p, r）-invex functions are consid- ered. Parametric sufficient optimality conditions and duality results are established under the aforesaid assumptions on the obje... 详细信息

关键词： Duality minimax programming optimality conditions (p r)-invex functions.

rOLE OF α-PSEUDO-UNIVEX FUNCTIONS IN VECTOr VArIATIONAL-LIk. INEQUALITY PrOBLEMS

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Journal of Systems Science & Complexity 2007年第3期20卷 344-349页

作者： S. k. MISHrA Shouyang WAng k. k. LAI Department of Mathematics Statistics and Computer Science College of Basic Sciences and Humanities G. B. Pant University of Agriculture and Technology Pantnagar-263 145 India. Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China. Department of Management Sciences City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China.

In this paper, we introduce a new class of generalized convex function, namely, a-pseudounivex function, by combining the concepts of pseudo-univex and α-invex functions. Further, we establish some relationships between vector variational-lik. inequality problems and vector optimization problems under the assumptions of α-pseudo-univex functions. results obtained in this paper present a refinement and improvement of previously k.own results.

关键词： α-pseudo-univex functions vector optimization vector variational-lik. inequality problems.

Parallel Active Subspace Decomposition for Tensor robust Principal Component Analysis

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Communications on Applied Mathematics and Computation 2021年第2期3卷 221-241页

作者： Michael k.ng Xue-Zhong Wang Department of Mathematics The University of Hong KongHong KongChina School of Mathematics and Statistics Hexi University734000 ZhangyeGansu ProvinceChina

Tensor robust principal component analysis has received a substantial amount of attention in various *** existing methods,normally relying on tensor nuclear norm minimization,need to pay an expensive computational cost due to multiple singular value decompositions at each *** overcome the drawback.we propose a scalable and efficient method,named parallel active subspace decomposition,which divides the unfolding along each mode of the tensor into a columnwise orthonormal matrix(active subspace)and another small-size matrix in *** a transformation leads to a nonconvex optimization problem in which the scale of nuclear norm minimization is generally much smaller than that in the original *** solve the optimization problem by an alternating direction method of multipliers and show that the iterates can be convergent within the given stopping criterion and the convergent solution is close to the global optimum solution within the prescribed *** results are given to demonstrate that the performance of the proposed model is better than the state-of-the-art methods.

关键词： Principal component analysis Low-rank.tensors Nuclear norm minimization Active subspace decomposition Matrix factorization

Settlement modeling in central core rock.ill dams by new approaches

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International Journal of Mining Science and Technology 2016年第4期26卷 703-710页

作者： Behnia D. Ahangari k. Goshtasbi k. Moeinossadat S.r. Behnia M. Department of Mining Engineering Science and Research BranchIslamic Azad University Department of Mining Engineering Tarbiat Modares UniversityFaculty of Engineering Department of Civil Engineering Qaemshahr BranchIslamic Azad University

One of the most important reasons for the serious damage of embank.ent dams is their impermissible ***,it can be stated that the prediction of settlement of a dam is of paramount *** study aims to apply intelligent methods to predict settlement after constructing central core rock.ill *** were made in this research to prepare models for predicting settlement of these dams using the information of 35 different central core rock.ill dams all over the world and Adaptive Neuro-Fuzzy Interface System(ANFIS) and Gene Expression Programming(GEP) *** such as height of dam(H) and compressibility index(Ci) were considered as the input ***,a form was designed using visual basic software for predicting dam *** respect to the accuracy of the results obtained from the intelligent methods,they can be recommended for predicting settlement after constructing central core rock.ill dams for the future plans.

关键词： Settlement Adaptive Neuro-Fuzzy Interface System(ANFIS)Gene Expression Programming (GEP)Visual Basic (VB)

System Dynamic Modelling of Patient Flow and Transferral Problem in a Mixed Public-Private Healthcare System:A Case Study of Hong k.ng SAr

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Journal of Systems Science and Systems Engineering 2020年第5期29卷 590-608页

作者： C.k.M.LEE W.C.TAI k.m k.H.ng Department of Industrial and Systems Engineering The Hon g Kong Polytechnic UniversityHung HornHong Kong SARChina School of Mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

The current healthcare system in Hong k.ng is experiencing pressure due to constrained resources,with dramatic increases in inpatient services queue lengths,dissatisfaction with the work.ng environment,unacceptable work.orce arrangements and high turnover rate of hospital *** maintain the robustness of the healthcare system and a sustainable inpatients flow,the Food and Health Bureau launched a public-private partnership programme to utilise the resources of the public and private *** research investigates the potential for extension of the programme and further enhancing the sustainability of the long-term inpatient services under a mixed public-private healthcare policy via system dynamic *** findings show that an increase of human resources in public hospitals does not substantially improve inpatient flow rate ***,the results from the system dynamic approach provide insights into the expansion of the service areas of the programme and suggest increasing the number of referrals to private hospitals.

关键词： System dynamic models scenario analysis inpatient transferral mixed public-private healthcare system