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Journal of Pharmaceutical Analysis 2020年第2期10卷 187-193页

作者： Benjaporn Buranrat Sirintra Noiwetch Tippaporn Suksar Aphimook ta-ut MD Program Faculty of MedicineMahasarakham UniversityMuang DistrictMaha Sarakham44000Thailand Applied Thai Traditional Medicine Program Faculty of MedicineMahasarakham UniversityMuang DistrictMaha Sarakham44000Thailand

In this study,we investigated how Oroxylum indicum leaf and fruit extracts affect the viability and migration of MCF-7 breast cancer cells and the mechanisms of action responsible for these ***-7 cells treated with the extracts were examined using the sulforhodamine B,colony formation and caspase 3 activity assays,and by Western *** extracts were found to inhibit MCF-7 cell growth in a concentration-and time-dependent manner,with 48 h IC50 values of 57.02±2.85μg/mL and 131.3±19.2μg/mL for leaf and fruit extracts,***,the *** leaf extract caused a reduction in MCF-7 cell viability,induction of MCF-7 cell apoptosis and ROS formation,and an increase in caspase 3 ***,the two extracts inhibited MCF-7 cell migration and reduced both MMP 9 and ICAMP1 gene expression and MMP9 protein ***,*** extracts greatly reduced expression of the cell cycle regulatory protein Rac1 in the mevalonate *** summary,*** leaf and fruit extracts reduce breast cancer cell growth,cell viability and cell *** constituents could,therefore,be useful for augmenting the activity of chemotherapeutic drugs employed to treat breast cancer.

关键词： Oroxylum indicum Reactive oxygen species(ROS) Migration Cell viability matrix metalloproteinase(MMP) Apoptosis

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Exponentially Bounded C-semigroup and the Cauchy Initial Value Problems in Complete Random Normed Modules

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Acta mathematica Sinica,English Series 2024年第9期40卷 2195-2212页

作者： Son ta CONG Thang Dang HUNG Oanh Le THI Department of mathematics University of ScienceVietnam National University 334 Nguyen TraiThanh XuanHanoiVietnam Faculty of Natural Sciences Hong Duc University565 Quang TrungDong VeThanh HoaVietnam

In this paper,the notion of C-semigroup of continuous module homomorphisms on a complete random normal(RN)module is introduced and *** existence and uniqueness of solution to the Cauchy problem with respect to exponen... 详细信息

关键词： C-semigroup Cauchy problem random normed modules L^(0)-Lipschitz

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Threshold-Based Adaptive Gaussian Mixture Model Integration(ta-GMMI)Algorithm for mapping Snow Cover in Mountainous Terrain

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Computer Modeling in Engineering & Sciences 2020年第9期124卷 1149-1165页

作者： Yonghong Zhang Guangyi ma Wei Tian Jiangeng Wang Shiwei Chen School of Automation Nanjing University of Information Science&TechnologyNanjing210044China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science&TechnologyNanjing210044China School of Computer and Software Nanjing University of Information Science&TechnologyNanjing210044China School of Atmospheric Physics Nanjing University of Information Science&TechnologyNanjing210044China

Snow cover is an important parameter in the fields of computer modeling,engineering technology and energy *** the extensive growth of novel hardware and software compositions creating smart,cyber physical systems’(CPS)efficient end-to-end *** order to provide accurate snow detection results for the CPS’s terminal,this paper proposed a snow cover detection algorithm based on the unsupervised Gaussian mixture model(GMM)for the FY-4A satellite *** present,most snow cover detection algorithms mainly utilize the characteristics of the optical spectrum,which is based on the normalized difference snow index(NDSI)with thresholds in different *** algorithms require a large amount of manually labeled data for statistical analysis to obtain the appropriate thresholds for the study *** must be given to both the high and low elevations in the study *** is difficult to extract all snow by a fixed threshold in mountainous and rugged *** this research,we avoid relying on a manual analysis for different ***,an algorithm based on the GMM is proposed,integrating the threshold-based algorithm and the ***,the threshold-based algorithm with transferred thresholds from other satellites’analysis results are used to coarsely classify the surface *** results are then used to initialize the parameters of the ***,the parameters of that model are updated by an expectation-maximum(EM)iteration algorithm,and the final results are outputted when the iterative conditions *** results show that this algorithm can adjust itself to mountainous terrain with different elevations,and exhibits a better performance than the threshold-based *** with orbit satellites’snow products,the accuracy of the algorithm used for FY-4A is improved by nearly 2%,and the snow detection rate is increased by nearly 6%.Moreover,compared with microwave sensors’snow products,the accuracy is increased by n

关键词： Cyber physical systems FY-4A snow cover Gaussian mixture model

A robust vector tracking loop structure based on potential bias analysis

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Chinese Journal of Aeronautics 2024年第4期37卷 405-420页

作者： Qiongqiong JIA Yiran LUO Bing XU Li-ta HSU Renbiao WU Tianjin Key Lab for Advanced Signal Processing Civil Aviation University of ChinaTianjin 300300China Interdisciplinary Division of Aeronautical and Aviation Engineering The Hong Kong Polytechnic University999077Hong KongChina Department of Geomatics Engineering University of CalgaryCalgary T2N1N4Canada

This paper proposes a robust vector tracking loop structure based on potential bias analysis. The influence of four kinds of biases on the existing two implementations of Vector Tracking Loops(VTLs) is illustrated by theoretical analysis and numerical simulations, and the following findings are obtained. Firstly, the initial user state bias leads to steady navigation solution bias in the relative VTL, while new measurements can eliminate it in the absolute VTL. Secondly, the initial code phase bias is transferred to the following navigation solutions in the relative VTL, while new measurements can eliminate it in the absolute VTL. Thirdly, the user state bias induced by erroneous navigation solution of VTLs can be eliminated by both of the two VTLs. Fourthly,the multipath/NLOS likely affects the two VTLs, and the induced tracking bias in the duration of the multipath/NLOS would decrease the performance of VTLs. Based on the above analysis,a robust VTL structure is proposed, where the absolute VTL is selected for its robustness to the two kinds of initialization biases;meanwhile, the instant bias detection and correction method is used to improve the performance of VTLs in the duration of the multipath/NLOS. Numerical simulations and experimental results verify the effectiveness of the proposed robust VTL structure.

关键词： Global Navigation Satellite System(GNSS) Vector Tracking Loop(VTL) Multipath Non-Line-of-Sight(NLOS) Tracking bias propagation Least Absolute Shrinkage and Selection Operator(LASSO)

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A Prefix Tree Based n-best List Re-scoring Strategy for Recurrent Neural Network Language Model

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Chinese Journal of Electronics 2014年第1期23卷 70-74页

作者： SI Yujing LI ta PAN Jielin YAN Yonghong The Key Laboratory of Speech Acoustics and Content Understanding Chinese Academy of Sciences

In this paper, issues of speeding up Recurrent neural network language model(RNNLM) in the testing phase are explored so that RNNLMs can be used to re-rank a large n-best list in real-time systems which could obtain better performance. A new n-best list rescoring framework, Prefix tree based n-best list re-scoring(PTNR), is proposed to hundred percent eliminate the repeated computations which makes n-best list re-scoring ineffective. At the same time, the bunch mode technique,widely-used in speeding up the training of Feed-forward neural network language model(FF-NNLM), is combined with PTNR and the speed is further improved. Experimental results show that our approach is much faster than basic n-best list re-scoring. take 1000-best as an example, our approach is almost 11 times faster than the basic n-best list re-scoring.

关键词： Recurrent neural network language model(RNNLM) n-best list Prefix tree based n-best list re-scoring(PTNR) Speedup Bunch mode

Resource Allocation Based on SFLA Algorithm for D2D Multicast Communications

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Computer Systems Science & Engineering 2023年第5期45卷 1517-1530页

作者： Wisam Hayder mahdi Necmi taşpınar University of Diyala Department of Communications EngineeringDiyalaBaquba32001Iraq Erciyes University Department of Electrical and Electronics EngineeringKayseri38039Turkey

Multicast device-to-device(D2D)communication technology is considered as one of the new technologies in the fifth generation(5G)networks that directly addresses the need for content sharing among internet *** fact,when direct communication is available between devices,the spectral efficiency is improved by reusing the licensed cellular *** current studies show that D2D communication increases network capacity and reduces *** order to achieve the alternate capabilities,coordination is required to implement interference *** considered subcarrier allocation for the uplink,in addition to the power control that takes place on the underlay *** completed data rate in single multicast communication is significantly reduced and limited by nodes with lower channel *** this paper,we used Shuffled Frog Leaping Algorithm(SFLA)for resource allocation(RA)in D2D multicast *** compared the results of the SFLA algorithm with the Firefly Algorithm(FA),Ant Colony Optimization(ACO)and Particle Swarm Optimization(PSO);in terms of D2D user throughput,Cellular User(CU)throughput,network average throughput,network interference and signal interference noise ratio(SINR)*** simulation results show that SFLA clearly outperforms other algorithms in terms of data rate under the high pressure of infeasibility.

关键词： Resource Allocation(RA) SFLA D2D 5G

Feasibility Study on Fabrication of Geopolymer Bricks by Wasted Grinding Wheel at Room Temperature

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Journal of Renewable materials 2020年第12期8卷 1657-1670页

作者： Yi-Che Hsieh ta-Wui Cheng Chia-Ho Wu Department of materials and Mineral Resources Engineering National Taipei University of TechnologyTaipei10608Taiwan Institute of Mineral Resources Engineering National Taipei University of TechnologyTaipei10608Taiwan

In this study,the feasibility of producing eco-friendly bricks by using geopolymer technology and a waste grinding wheel(WGW)from the grinding wheel industries was ***,in order to meet industrial needs,for instance,in taiwan,approximately 500,000 grinding wheels are used *** is,a large number of“waste”grinding wheels are ***,few studies have been conducted on the use of WGWs as raw materials in geopolymer *** use of geopolymer technology to form bricks can avoid the utilization of clay and cement and even prevent the use of a high-temperature process in ***,it can decrease CO_(2) emission and energy consumption and thus,protect the *** this study,the following three major factors were considered:press-forming pressure(70 and 100 kgf/cm2),NaOH molar concentration(2 and 4M),and the ratio of binder fineaggregate(1:3,1:4,and 1:5).Under these conditions,the specimens were tested using the compressive strength test,water absorption test,microstructure analysis,a freezing–thawing test and toxicity characteristic leaching procedure *** optimal formulation was composed of 1:4 binder fine-aggregate ratio,4M NaOH concentration,and 100-kgf/cm2 ***,we used a WGW and achieved a compressive strength of 50.6 MPa after 28 days,which was greater than 32 MPa and conformed to the Grade A brick standard of National Standards of the Republic of China(13295).In conclusion,this brick fabrication method based on geopolymer technology was not only beneficial to the environment but also improved the efficiency of reutilizing WGW.

关键词： Geopolymer waste grinding wheel geopolymer bricks

machine learning based LOS/NLOS classifier and robust estimator for GNSS shadow matching

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Satellite Navigation 2020年第1期1卷 167-178页

作者： Haosheng Xu Antonio Angrisano Salvatore Gaglione Li-ta Hsu The Hong Kong Polytechnic University KowloonHong KongPeople’s Republic of China The University of Benevento G.Fortunato BeneventoItaly.3 The University of Naples ParthenopeNaplesItaly. The University of Naples Parthenope NaplesItaly

Global Navigation Satellites Systems(GNSS)is frequently used for positioning services in various applications,e.g.,pedestrian and vehicular ***,it is well-known that GNSS positioning performs unreliably in urban *** shadow matching is a method of improving accuracy in the cross-street *** position and classification of observed satellite visibility between line-of-sight(LOS)and non-line-of-sight(NLOS)are essential for its *** the conventional LOS/NLOS classification,the classifiers are based on a single feature,extracted from raw GNSS measurements,such as signal noise ratio,pseudorange,elevation angle,*** in urban canyons,these measurements are unstable and unreliable due to the signal reflection and refraction from the surrounding ***,the conventional least square approach for positioning is insufficient to provide accurate initialization for shadow matching in urban *** our study,shadow matching is improved using the initial position from robust estimator and the satellite visibility determined by support vector machine(SVM).The robust estimator has an improved positioning accuracy and the classification rate of SVM classification can reach 91.5%in urban *** important issue is related to satellites with ultra-high or low elevation angles and satellites near the building boundary that are very likely to be *** solving this problem,the SVM classification shows the potential of about 90%classification accuracy for various urban *** the help of these approaches,the shadow matching has a mean error of 10.27 m with 1.44 m in the cross-street direction;these performances are suitable for urban positioning.

关键词： GNSS Shadow matching NLOS and machine learning Robust estimation

γ Radiative Decays to Light Quark Jets and Color Octet Mechanism

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Communications in Theoretical Physics 2006年第6X期46卷 1017-1022页

作者： GAO Ying-Jia ZHANG Yu-Jie CHAO Kuang-ta Department of Physics Peking Universlty Beijlng 100871 China China Center of Advanced Science and Technology (World Laboratory) Beijing 100080 China

We study radiative decays of T to light quark jets in nonrelativistic QCD by taking both the color singlet and color octet b^-b operators into consideration. The cut for quark jet energy and cut for the angle between two quark jets are introduced. The sensitivity to the soft and collinear singularities in the loop integrals are greatly reduced by these cuts. With the jet energy cut of about 1 GeV, and the jet angle cut of about 36°, the branching ratio for γ→ rq^- is found to be 8.2 × 10^-4 from color singlet contributions. The color octet contributions could be much larger than that of color singlet, depending on the estimate of the color octet matrix elements. This process may provide a new test for the color octet mechanism in nonrelativistic QCD.

关键词： radiative decay jet color octet

Physical and mechanical properties of municipal solid waste incineration residues with cement and coal fly ash using X-ray Computed Tomography scanners

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Frontiers of Structural and Civil Engineering 2019年第3期13卷 640-652页

作者： Toshifumi MUKUNOKI ta Thi HOAI Daisuke FUKUSHIma Teppei KOMIYA takayuki SHImaOKA Faculty of Advanced Science and Technology Graduate School of Kumamoto UniversityKumamoto city 860-8555Japan Graduate school of Science and Technology Kumamoto UniversityKumamoto city 860-8555Japan Faculty of Geology VNU University of ScienceVietnam National University Hanoi334 Nguyen TraiHanoiVietnam Water and material Cycles System Faculty of EngineeringKyushu UniversityFukuoka city 819-0395Japan

A significant volume of Municipal Solid Waste incineration bottom ash and fly ash (i.e.,incineration residues) are commonly disposed as ***,reclamation of landfill sites to create a new land space after their closure becomes an important goal in the current fewer and fewer land availability scenario in many narrow *** objective of this study is to reclaim incineration residue materials in the landfill site by using cement and coal fly ash as stabilizers aiming at performing quality check as new developed materials before future ***,physical and mechanical properties of these new materials should be initially examined at the micro scale,which is the primary fundamental for construction at larger *** research examines quantitative influences of using the combination of cement and coal fly ash at different ratio on the internal structure and ability of strength enhancement of incineration residues when suffering from *** of industrial and micro-focus X-ray computed tomography (CT) scanners combined with an image analysis technique were utilized to characterize and visualize the behavior and internal structure of the incineration residues-cement-coal fly ash mixture under the series of unconfined compression test and curing period *** types of cement solidified incineration residues in term of different curing period (i.e.,7,14,28 days) and coal fly ash addition content (i.e.,0%,9%,18%) were scanned before and after unconfined compression *** was shown that incineration residues solidified by cement and coal fly ash showed an increase in compression strength and deformation modulus with curing time and coal fly ash ***-dimension computed tomography images observation and analysis confirmed that solidified incineration residues including incineration bottom and fly ash as well as cement and coal fly ash have the deliquescent ***,it was studied that stabilized parts play a more im

关键词： mechanical property municipal solid waste incineration residues coal fly ash unconfined compression test image analysis X-Ray Computed Tomography scanners