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新时期的胡志明市城市规划——挑战与对策

上海城市规划 2017年第3期 77-82页

作者： nguyen ngoc hieu Tran Hoang Nam 沙永杰张晓潇越南德国大学(VGU) 同济大学建筑与城市规划学院

胡志明市及周边区域正在快速发展,体现在经济、人口和城市规模等各个方面的快速增长,但在向城市群转型发展过程中,城市面临一系列新挑战,主要包括激烈的经济竞争、气候变化带来的威胁以及过去30年快速发展遗留和积累的问题等,这些促使... 详细信息

胡志明市及周边区域正在快速发展,体现在经济、人口和城市规模等各个方面的快速增长,但在向城市群转型发展过程中,城市面临一系列新挑战,主要包括激烈的经济竞争、气候变化带来的威胁以及过去30年快速发展遗留和积累的问题等,这些促使城市寻求新的可持续发展对策。本文介绍胡志明市城市发展与规划演变的历程,梳理胡志明市当前面临的五个方面的主要问题——城市发展模式、住房与城市贫民问题、交通、环境和区域之间合作,并进一步讨论面向未来的规划发展对策。

关键词：胡志明市城市规划与发展快速城市化气候变化城市群

Complexities and pitfalls in analyzing and interpreting mitochondrial DNA content in human cancer

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Journal of Genetics and Genomics 2020年第7期47卷 349-359页

作者： hieu nguyen Thomas LaFramboise Vinmec Research Institute of Stem Cell and Gene Technology(VRSIG) 458 M inh KhaiVinh TuyHai Ba TrungHanoiViet Nam Department of Genetics and Genome Sciences Case Western Reserve University School of Medicine10900 Euclid AvenueClevelandOH44106USA

Mutations in the human mitochondrial genome have been observed in all types of human cancer,indicating that mutations might contribute to tumorigenesis,metastasis,recurrence,or drug *** possibility is appealing because of the known shift from oxidative metabolism to glycolysis,known as the Warburg effect,that occurs in *** DNA(mtDNA)mutations could either bematernally inherited and predispose to cancer(germ line mutations)or occur sporadically in the mtDNA of specific tissues(rissue-or tumor-specific somatic mutations)and contribute to the tumor initiation and progression ***-throughput sequencing technologies now enable comprehensive detection of mtDNA variation in tissues and bodily fluids,with the potential to be used as an early detectiontool that may impact the treatment of ***,we discuss insights into the roles of mtDNA mutations in carcinogenesis,highlighting the complexities involved in the analysis and interpretation of mitochondrial genomic *** challenges in studying their contribution to pathogenesis,and the value of mtDNA mutations in developing early detection,diagnosis,prognosis,and therapeuticstrategics for cancer.

关键词： Mitochondrial DNA Cancer Genetic variation

Graphene-driving novel strain relaxation towards AlN film and DUV photoelectronic devices

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Light(Science & Applications) 2022年第7期11卷 1318-1319页

作者： hieu.P.T.nguyen New Jersey Institute of Technology Department of Electrical&Computer EngineeringNewarkNJ 07102USA

Graphene-driving strain-pre-store engineering enables the epitaxy of strain-free AlN film with low dislocation density for DUV-LED and the unique mechanism of strain-relaxation in QvdW epitaxy was demystified.

关键词： driving relaxation strain

Enhancing global hepatocellular carcinoma management:Bridging Eastern and Western perspectives on dexamethasone and Nacetylcysteine before transarterial chemoembolization

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World Journal of Gastroenterology 2024年第47期30卷 4983-4990页

作者： Thang Viet Luong Nam Van Duc nguyen Linh Duy Le hieu nguyen Hoang Minh Hai nguyen ngoc Dang Department of Internal Medicine University of Medicine and PharmacyHue UniversityHue 530000Viet Nam Department of Diagnostic Imaging University of Medicine and PharmacyHue UniversityHue 530000Viet Nam Faculty of Medicine Duy Tan UniversityDa Nang 550000Viet Nam

This article explores the integration of Eastern and Western perspectives on the use of dexamethasone and N-acetylcysteine as premedications in transarterial chemoembolization for hepatocellular carcinoma(HCC).By examining key concerns raised by Western researchers,particularly regarding the different etiologies of liver cirrhosis,and contrasting them with robust clinical data from Asia,this article highlights the necessity for region-specific research and proposes future directions for global HCC management.

关键词： Hepatocellular carcinoma Transarterial chemoembolization Dexamethasone N-acetylcysteine East-West perspectives Post-embolization syndrome

Complex Network Analysis of the Robustness of the Hanoi, Vietnam Bus Network

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Journal of Systems Science & Complexity 2019年第5期32卷 1251-1263页

作者： TRAN Vu hieu CHEONG Siew Ann BUI ngoc Dung Faculty of Information Technology University of Transport and CommunicationsHanoiVietnam Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371Singapore Faculty of Information Technology University of Transport and CommunicationsHanoiVietnam.

Many complex networks exist to facilitate the transport of material or information. In this capacity, the authors are often concerned with the continued flow of material or information when a fraction of the links in the complex network is disrupted. In other words, the authors are interested in the robustness of the complex network. In this paper, the authors survey measures of robustness like the average path length, the average clustering coefficient, the global efficiency, the size of largest cluster and use these to analyze the robustness of the bus network in Hanoi, Vietnam. The authors find that the bus network is robust against random failure but sensitive to targeted attack, in agreement with its scale-free character. By examining sharp drops in the average path length within the largest cluster of the Hanoi bus network under successive targeted attack, the authors identify five nodes whose loss lead to the fragmentation of the network into five or six disconnected clusters. These isolated clusters represent geographically the Central, Western, Southern, and Northwestern districts of Hanoi. Special considerations must therefore be given to these five nodes when planners wish to expand the bus network, or make it more robust.

关键词： Complex network hanoi bus network random failure robustness targeted attack

An Efficient Differential Evolution for Truss Sizing Optimization Using AdaBoost Classifier

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Computer Modeling in Engineering & Sciences 2023年第1期134卷 429-458页

作者： Tran-hieu nguyen Anh-Tuan Vu Hanoi University of Civil Engineering Hanoi100000Vietnam

Design constraints verification is the most computationally expensive task in evolutionary structural optimization due to a large number of structural analyses thatmust be *** a surrogatemodel to approximate the behavior of structures instead of the exact structural analyses is a possible solution to tackle this ***,most existing surrogate models have been designed based on regression *** paper proposes a novel method,called CaDE,which adopts a machine learning classification technique for enhancing the performance of the Differential Evolution(DE)*** proposed method is separated into two *** the first optimization stage,the original DE is implemented as usual,but all individuals produced in this phase are stored as inputs of the training *** on design constraints verification,these individuals are labeled as“safe”or“unsafe”and their labels are saved as outputs of the training *** collecting enough data,an AdaBoost model is trained to evaluate the safety state of *** model is then used in the second stage to preliminarily assess new individuals,and unpromising ones are rejected without checking design *** method reduces unnecessary structural analyses,thereby shortens the optimization *** benchmark truss sizing optimization problems are solved using the proposed method to demonstrate its *** obtained results show that the CaDE finds good optimal designs with less structural analyses in comparison with the original DE and four other DE *** reduction rate of five examples ranges from 18 to over 50%.Moreover,the proposed method is applied to a real-size transmission tower design problem to exhibit its applicability in practice.

关键词： Structural optimization machine learning surrogate model differential evolution AdaBoost classifier

Spectral properties of the surface reflectance of the northern polar region of Mercury

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Research in Astronomy and Astrophysics 2020年第3期20卷 92-107页

作者： nguyen Bich ngoc Nicolas Bott Pham ngoc Diep Department of Astrophysics Vietnam National Space CenterVietnam Academy of Science and Technology18 Hoang Quoc VietCau GiayHanoiVietnam Laboratoire d'Etudes Spatiales et d' Instrumentation en Astrophysique l'Observatoire de Paris5 place Jules Janssen 92195 MeudonFrance

We analyze MESSENGER reflectance measurements covering the northern polar region of Mercury,the least studied region of the northern mercurian *** use observations from the Mercury Dual Imaging System Wide-Angle Camera(MDIS/WAC)and the Mercury Atmospheric and Surface Composition Spectrometer(MASCS/VIRS)to study the spectral dependence of the surface *** results obtained from the observations made by both instruments are remarkably *** find that a second degree polynomial description of the measured reflectance spectra gives very good fits to the data and that the information that they carry can best be characterized by two parameters,the mean reflectance and the mean relative spectral slope,averaged over the explored range of *** properties of the four main types of terrains known to form Mercury’s regolith in the northern region,smooth plains(SPs),heavily cratered terrain(HCT),fresh ejecta/materials and red pitted ground(RPG),are examined in terms of these two *** results are compared,and found consistent with those obtained by earlier studies in spite of difficulties met in obtaining accurate reflectance measurements under the large incidence angle condition characteristic of polar *** results will help with the preparation of the BepiColombo mission and with supporting its observational strategy.

关键词： planets and satellites terrestrial planets-planets and satellites surfaces-techniques spectroscopic

3D modeling of transformation of gaseous pollutants in the high-pressure turbine of an aircraft engine

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Propulsion and Power Research 2020年第1期9卷 1-14页

作者： Trung hieu nguyen Phuong nguyen-Tri Francois Garnier Department of Mechanical Engineering École de Technologie Supérieure(ETS)MontrealQuebecH3C 1K3Canada Institute of Research and Development Duy Tan UniversityDa Nang550000Viet Nam Department of Chemistry Biochemistry and PhysicsUniversitédu QuébecàTrois-RivièresUniversity of QuebecTrois-Rivières(Québec)G9A 5H7Canada

Aircraft emissions contribute to global climate change and regional air pollution near *** the formation and the transformation of emissions in the aircraft engine is essential to properly quantify the environmental impact and air ***,precise investigation of chemical process in the turbine is challenging because of the complexity of the transformation process in the complex flow relating to the moving blade at high temperature and high *** present here,the first published model study of 3D chemical formations inside a high-pressure turbine and first time to compare three numerical solutions(1D,2D and 3D calculations)of transformation of trace species inside an aircraft *** model has simulated the evolution of principal precursor pollutant gases(NOx and SOx)and other species(hydrogen,oxygen species and carbon oxides).Our results also indicated strong dissimilarities in chemical transformations of 3D *** comparing the three solutions,the results obtained showed that the difference of mole fractions of species can be under predicted by 75%between 1D and 2D calculations and in the comparison of 2D and 3D calculation,the under predicted difference may be 90%.

关键词： Gaseous pollutants High-pressure turbine Aircraft engine 3D modeling

ON BOUNDEDNESS PROPERTY OF SINGULAR INTEGRAL OPERATORS ASSOCIATED TO A SCHRODINGER OPERATOR IN A GENERALIZED MORREY SPACE AND APPLICATIONS

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Acta Mathematica Scientia 2020年第5期40卷 1171-1184页

作者： Xuan Truong LE Thanh Nhan nguyen ngoc Trong nguyen Division of Computational Mathematics and Engineering Institute for Computational ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Faculty of Mathematics and Statistics Ton Due Thang UniversityHo Chi Minh CityVietnam Department of Mathematics Ho Chi Minh City University of EducationHo Chi Minh CityVietnam Department of Primary Education Ho Chi Minh City University of EducationHo Chi Minh CityVietnam

In this paper,we provide the boundedness property of the Riesz transforms associated to the Schrodinger operator■=-Δ+V in a new weighted Morrey space which is the generalized version of many previous Morrey type *** additional potential V considered in this paper is a non-negative function satisfying the suitable reverse Holder's *** results are new and general in many cases of *** an application of the boundedness property of these singular integral operators,we obtain some regularity results of solutions to Schrodinger equations in the new Morrey space.

关键词： weighted Morrey spaces Schodinger operator riesz transforms Regularity estima tes