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Computers, Materials & Continua 2021年第1期66卷 17-33页

作者： Chung le Van Vikram Puri Nguyen Thanh Thao Dac-Nhuong le Duy Tan University Da Nang550000Vietnam Department of Radiology Hue University of Medicine and PharmacyHue UniversityHue530000Vietnam Institute of Research and Development Duy Tan UniversityDanang550000Vietnam Faculty of Information Technology Duy Tan UniversityDanang550000Vietnam

With the rapid growth of the autonomous system,deep learning has become integral parts to enumerate applications especially in the case of healthcare *** body vertebrae are the longest and complex parts of the human *** are numerous kinds of conditions such as scoliosis,vertebra degeneration,and vertebrate disc spacing that are related to the human body vertebrae or spine or *** detection of these problems is very important otherwise patients will suffer from a disease for a *** this proposed system,we developed an autonomous system that detects lumbar implants and diagnoses scoliosis from the modified Vietnamese x-ray *** applied two different approaches including pre-trained APIs and transfer learning with their pre-trained models due to the unavailability of sufficient x-ray medical *** results show that transfer learning is suitable for the modified Vietnamese x-ray imaging data as compared to the pre-trained API ***,we also explored and analyzed four transfer learning models and two pre-trained API models with our datasets in terms of accuracy,sensitivity,and specificity.

关键词： Lumbar implant diagnosing scoliosis X-Ray imaging transfer

Emotional Vietnamese Speech Synthesis Using Style-Transfer learning

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Computer Systems Science & Engineering 2023年第2期44卷 1263-1278页

作者： Thanh X.le An T.le Quang H.Nguyen School of Information and Communication Technology Hanoi University of Science and TechnologyHanoi10000Vietnam

In recent years,speech synthesis systems have allowed for the produc-tion of very high-quality ***,research in this domain is now turning to the problem of integrating emotions into ***,the method of con-structing a speech synthesizer for each emotion has some ***,this method often requires an emotional-speech data set with many *** data sets are very time-intensive and labor-intensive to ***,training each of these models requires computers with large computational capabilities and a lot of effort and time for model *** addition,each model for each emotion failed to take advantage of data sets of other *** this paper,we propose a new method to synthesize emotional speech in which the latent expressions of emotions are learned from a small data set of professional actors through a Flow-tron *** addition,we provide a new method to build a speech corpus that is scalable and whose quality is easy to ***,to produce a high-quality speech synthesis model,we used this data set to train the Tacotron 2 *** used it as a pre-trained model to train the Flowtron *** applied this method to synthesize Vietnamese speech with sadness and *** opi-nion score(MOS)assessment results show that MOS is 3.61 for sadness and 3.95 for *** conclusion,the proposed method proves to be more effec-tive for a high degree of automation and fast emotional sentence generation,using a small emotional-speech data set.

关键词： Emotional speech synthesis ﬂowtron speech synthesis style transfer vietnamese speech

“An Aquatic Reverie”|Mallarmé’s Writing on Water and the Naming of Waves

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Journal of Foreign Languages and Cultures 2019年第2期3卷 56-64页

作者： clark Lunberry University of North Florida

At his home outside Paris,in Valvin,Stéphane Mallarméspent much time on his small boat dreamily sailing upon the Seine,seeing this body of flowing water as a site for inspiration and ***,Mallarméonce confided to a friend,“I no longer write a poem without an aquatic reverie running through it,”and that,for him,poetry was like an“oar stroke,”and the sail,a“white page.”When Mallarméwas invited to lecture at Oxford University in 1894,he did not speak specifically of time spent on the water,his life on the Seine,but his own pronouncements on poetic form and function seem inspired by his own aquatic reveries about surfaces and depths,transparency and opacity,and of those fluid spaces of the imagination that can be approached but not penetrated,of liquid impressions seen but not *** my essay,I discuss Mallarmé’s seminal Oxford lecture and the manner in which his time on the water,his reveries floating upon its surface,offer a way into his poetic pronouncements,as well as into a poetry that remains to this day rich in mystery,power,and enduring *** essay concludes with a discussion of my own“Writing on Water”art and poetry installation,in 2017,at Oxford University,a project presented in conjunction with the conference“Power of the Word|The Prophetic Word”where I delivered a variation of the essay that follows.

关键词： Stéphane Mallarmé modern poetry and poetics image mirage water

RAID 4SMR:RAID Array with Shingled Magnetic Recording Disk for Mass Storage Systems

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Journal of Computer Science & Technology 2019年第4期34卷 854-868页

作者： Quoc le Ahmed Amer JoAnne Holliday Department of Computer Engineering School of EngineeringSanta Clara UniversitySanta ClaraCA 95053U.S.A.

One way to increase storage density is using a shingled magnetic recording(SMR)*** propose a novel use of SMR disks with RAID(redundant array of independent disks)arrays,specifically building upon and compared with a basic RAID 4 *** proposed scheme(called RAID 4SMR)has the potential to improve the performance of a traditional RAID 4 array with SMR *** evaluation shows that compared with the standard RAID 4,when using update in-place in RAID arrays,RAID 4SMR with garbage collection not just can allow the adoption of SMR disks with a reduced performance penalty,but offers a performance improvement of up to 56%.

关键词： disk array redundant array of independent disks(RAID) shingled magnetic recording(SMR) shingled write

Answer Extraction Based on Merging Score Strategy of Hot Terms

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Chinese Journal of Electronics 2016年第4期25卷 614-620页

作者： le Juan ZHANG Chunxia NIU Zhendong School of Computer Science and Technology Beijing Institute of Technology School of Software Beijing Institute of Technology Beijing Engineering Research Center of Massive Language Information Processing and Cloud Computing Application Beijing Institute of Technology

Answer extraction(AE) is one of the key technologies in developing the open domain Question & answer(Q&A) *** task is to yield the highest score to the expected answer based on an effective answer score *** introduce an answer extraction method by Merging score strategy(MSS) based on hot *** hot terms are defined according to their lexical and syntactic features to highlight the role of the question *** cope with the syntactic diversities of the corpus,we propose four improved candidate answer score *** of them is based on the lexical function of hot terms and their syntactic relationships with the candidate *** independent corpus score algorithms are proposed to tap the role of the corpus in ranking the candidate *** algorithms are adopted in MSS to tap the complementary action among the corpus,the candidate answers and the *** demonstrate the effectiveness of the proposed strategy.

关键词： Question & answer(Q&A) Answer extraction(AE) Merging score strategy(MSS) Hot terms

Predicting diamond-like Co-based chalcogenides as unconventional high temperature superconductors

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Science Bulletin 2018年第20期63卷 1338-1344页

作者： Jiangping Hu Yuhao Gu Congcong le Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Kavli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 1O0190China Collaborative Innovation Center of Quantum Matter Beijing 100049China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsInstitute of Theoretical and Computational ChemistryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

We predict Co-based chalcogenides with a diamond-like structure can host unconventional high temperature superconductivity(high-Tc). The essential electronic physics in these materials stems from the Co layers with each layer being formed by vertex-shared CoA_4(A=S, Se, Te) tetrahedra complexes, a material genome proposed recently by us to host potential unconventional high-Tcclose to a d7 filling configuration in 3 d transition metal compounds. We calculate the magnetic ground states of different transition metal compounds with this structure. It is found that(Mn, Fe, Co)-based compounds all have a G-type antiferromagnetic(AFM) insulating ground state while Ni-based compounds are paramagnetic *** AFM interaction is the largest in the Co-based compounds as the three t2 gorbitals all strongly participate in AFM superexchange interactions. The abrupt quenching of the magnetism from the Co to Ni-based compounds is very similar to those from Fe to Co-based pnictides in which a C-type AFM state appears in the Fe-based ones but vanishes in the Co-based ones. This behavior can be considered as an electronic signature of the high-Tcgene. Upon doping, as we predicted before, this family of Co-based compounds favor a strong d-wave pairing superconducting state.

关键词： Iron-based superconductors Cuprates Cobalt chalcogenides d-wave pairing symmetry

Bifunctional photocatalyst for H_(2) production and high-value product synthesis

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Journal of Materials Science & Technology 2023年第11期142卷 121-123页

作者： Jianjun Zhang Yao le Yong Zhang School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University21 Nanyang LinkSingapore 637371Singapore College of Architecture and Materials Engineering Hubei University of EducationWuhan 430205China School of Chemistry and Chemical Engineering Hubei Polytechnic UniversityHuangshi 435003China

Recently,a bifunctional CdS/MoO_(2)/MoS_(2) photocatalyst has been reported for coupling hydrogen production and pyruvic acid ***_(2) and MoO_(2),which are synthesized in one step,facilitate the bifunctional integration of photocatalytic hydrogen evolution and pyruvic acid synthesis by accepting photogen-erated electrons and holes,*** work inspires the new idea of coupling hydrogen production with selective organic synthesis to obtain green hydrogen and high-value products.

关键词： CdS Hollow sphere Dual cocatalysts Hydrogen evolution Organic synthesis

An Efficient Adaptive Hierarchical Sliding Mode Control Strategy Using Neural Networks for 3D Overhead Cranes

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International Journal of Automation and computing 2019年第5期16卷 614-627页

作者： Viet-Anh le Hai-Xuan le Linh Nguyen Minh-Xuan Phan Department of Automatic Control Hanoi University of Science and TechnologyHanoi 10000Vietnam Centre for Autonomous Systems University of Technology SydneyNew South Wales 2007Australia

In this paper, a new adaptive hierarchical sliding mode control scheme for a 3D overhead crane system is proposed. A controller is first designed by the use of a hierarchical structure of two first-order sliding surfaces represented by two actuated and un-actuated subsystems in the bridge crane. Parameters of the controller are then intelligently estimated, where uncertain parameters due to disturbances in the 3D overhead crane dynamic model are proposed to be represented by radial basis function networks whose weights are derived from a Lyapunov function. The proposed approach allows the crane system to be robust under uncertainty conditions in which some uncertain and unknown parameters are highly difficult to determine. Moreover, stability of the sliding surfaces is proved to be guaranteed. Effectiveness of the proposed approach is then demonstrated by implementing the algorithm in both synthetic and reallife systems, where the results obtained by our method are highly promising.

关键词： 3D overhead crane adaptive control hierarchical sliding mode control neural network radial basis function

Element Analysis of Instrumented Sharp Indentations into Pressure-sensitive Materials

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Journal of Materials Science & Technology 2007年第2期23卷 277-282页

作者： Minh-Quy le Seock-Sam KIM Department of Mechanics of Materials & Structures Faculty of Mechanical EngineeringHanoi University of TechnologyDai Co Viet RoadHanoi Vietnam School of Mechanical Engineering Kyungpook National UniversityDaegu 702-701South Korea

Finite element analysis was carried out to investigate the conical indentation response of elastic-plastic solids within the framework of the hydrostatic pressure dependence and the power law strain hardening. A large number of 40 difierent combinations of elasto-plastic properties with n ranging from 0 to 0.5 and σy/E ranging from 0.0014 to 0.03 were used in the computations. The loading curvature C and the average contact pressure Pave were considered within the concept of representative strains and the dimensional *** functions associated with these two parameters were formulated for each studied value of the pressure sensitivity. The results for pressure sensitive materials lie between those for Von Mises materials and the elastic model.

关键词： Finite element analysis Indentation Mechanical Properties Pressure-sensitive materials

An OWL-based WordNet lexical ontology

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第6期8卷 864-870页

作者： HUANG Xiao-xi ZHOU Chang-le School of Computer Science and Technology Zhejiang University Hangzhou 310027 China Center for the Study of Language and Cognition Zhejiang University Hangzhou 310028 China Institute of Artificial Intelligence Xiamen University Xiamen 361005 China

This paper discribes a data representation for WordNet 2.1 based on Web Ontology Language (OWL). The main components of WordNet database are transformed as classes in OWL, and the relations between synsets or lexcial words are transformed as OWL properties. Our conversion is based on the data file of WordNet instead of the Prolog database. This work can be used to enrich the work in progress of standard conversion of WordNet to the RDF/OWL representation at W3C.

关键词： WordNet Web Ontology Language (OWL) Semantic Web Ontology Natural Language Processing (NLP)