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Journal of Systems Science & Complexity 2007年第4期20卷 572-584页

作者： Rendao YE Songgui WANG college of applied sciences Beijing University of Technology Beijing 100022 China

Various random models with balanced data that are relevant for analyzing practical test data are described, along with several hypothesis testing and interval estimation problems concerning variance components. In this paper, we mainly consider these problems in general random effect model with balanced data. Exact tests and confidence intervals for a single variance component corresponding to random effect are developed by using generalized p-values and generalized confidence intervals. The resulting procedures are easy to compute and are applicable to small samples. Exact tests and confidence intervals are also established for comparing the random-effects variance components and the sum of random-effects variance components in two independent general random effect models with balanced data. Furthermore, we investigate the statistical properties of the resulting tests. Finally, some simulation results on the type Ⅰ error probability and power of the proposed test are reported. The simulation results indicate that exact test is extremely satisfactory for controlling type Ⅰ error probability.

关键词： Generalized confidence interval generalized p-value variance component.

An End-to-End Transformer-Based Automatic Speech Recognition for Qur’an Reciters

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computers, Materials & Continua 2023年第2期74卷 3471-3487页

作者： Mohammed Hadwan Hamzah A.Alsayadi Salah AL-Hagree Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of computer Science College of Applied SciencesTaiz UniversityTaiz6803Yemen computer Science Department Faculty of Computer and Information SciencesAin Shams UniversityCairo11566Egypt computer Science Department Faculty of SciencesIbb UniversityYemen Department of computer sciences&Information Ibb UniversityYemen

The attention-based encoder-decoder technique,known as the trans-former,is used to enhance the performance of end-to-end automatic speech recognition(ASR).This research focuses on applying ASR end-toend transformer-based models for the Arabic language,as the researchers’community pays little attention to *** Muslims Holy Qur’an book is written using Arabic diacritized *** this paper,an end-to-end transformer model to building a robust Qur’an *** is *** acoustic model was built using the transformer-based model as deep learning by the PyTorch framework.A multi-head attention mechanism is utilized to represent the encoder and decoder in the acoustic *** filter bank is used for feature *** build a language model(LM),the Recurrent Neural Network(RNN)and Long short-term memory(LSTM)were used to train an n-gram word-based *** a part of this research,a new dataset of Qur’an verses and their associated transcripts were collected and processed for training and evaluating the proposed model,consisting of 10 h *** recitations performed by 60 *** experimental results showed that the proposed end-to-end transformer-based model achieved a significant low character error rate(CER)of 1.98%and a word error rate(WER)of 6.16%.We have achieved state-of-the-art end-to-end transformer-based recognition for Qur’an reciters.

关键词： Attention-based encoder-decoder recurrent neural network long short-term memory qur’an reciters recognition diacritized arabic text

Holographic and Thermal-Fixing Characteristics of Doubly Doped Zn：Fe：LiNbO3 Crystals

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Chinese Physics Letters 2006年第10期23卷 2782-2785页

作者：李光明万玉红江竹青陶世荃 college of applied sciences Beijing University of Technology Beijing 100022

We perform a comprehensive experimental study on holographic and thermal-fixing characteristics of Zn：Fe：LiNbO3 The measured hologram decay time constants, respectively caused by optical readout and under dark condition, with thermal fixing are 15 times and 75 times longer than that obtained without thermal fixing. This suggests that Zn：Fe：LiNbO3 crystals are suitable for thermal fixing. Multiplexed recordings of 300 holograms using different thermal fixing schemes verify that a proper multiplexing scheme such as track-division thermal-fixing scheme for disc-type holographic storage can effectively compensate for the negative effect of zinc-doping on the dynamic range, thus the storage density is enhanced.

关键词： STORAGE

A Constrained Interval-Valued Linear Regression Model:A New Heteroscedasticity Estimation Method

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Journal of Systems Science & Complexity 2020年第6期33卷 2048-2066页

作者： ZHONG Yu ZHANG Zhongzhan LI Shoumei Beijing University of Technology College of Applied SciencesBeijing 100020China

Linear regression models for interval-valued data have been widely *** literatures are to split an interval into two real numbers,i.e.,the left-and right-endpoints or the center and radius of this interval,and fit two separate real-valued or two dimension linear regression *** paper is focused on the bias-corrected and heteroscedasticity-adjusted modeling by imposing order constraint to the endpoints of the response interval and weighted linear least squares with estimated covariance matrix,based on a generalized linear model for interval-valued data.A three step estimation method is *** conclusions and numerical evaluations show that the proposed estimator has higher efficiency than previous estimators.

关键词： Conditional maximum likelihood estimation interval-valued data order constraint truncated normal distribution weighted least squares estimation

Design and development of an ACCT for the Shanghai advanced proton therapy facility

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Nuclear Science and Techniques 2022年第10期33卷 41-52页

作者： Hong Zhang Jun-Zhou Li Rui Hou Sun An Shi-Quan Xu You-Chun Liu Peng-Jiao Zhang Jie Song Yue-Lin Zhang college of Engineering and applied sciences Nanjing UniversityNanjing 210093China

The Shanghai advanced proton therapy facility is a proton cancer treatment device designed and built by the Shanghai Institute of applied physics at the Chinese academy of *** accelerator part comprises a proton linear accelerator(linac)injector and a circular *** alternating current current transformer(ACCT)is used for non-intercepting beam current measurement at the drift tube linac *** to the beam characteristics,the ACCT is required to complete real-time beam current and pulse width measurements at currents of3-30 mA,frequencies of 1-10 Hz,and pulse widths of40-400μ*** this paper,we report the design and development of an *** designed ACCT was simulated using CST Microwave Studio,and calibrated using an oscilloscope and signal *** in the output signal of the ACCT were investigated as a function of ceramic gap size,number of coil turns,and *** to the simulation and experimental results,the optimal number of coil turns was found to be *** addition,a low-pass filter was adopted to filter the noise introduced during long-distance signal transmission using a coaxial cable with the length of 20 *** calibration results show that the corresponding rise time of the ACCT is 800 ns with the sensitivity of 8.2 V/A and a droop of less than 1%,meeting the design requirements.

关键词： Beam current monitors ACCT Particle beam diagnostics

Fuel loading pattern optimization of a pressurized water reactor by varying internal weights-based particle swarm optimization

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Nuclear Science and Techniques 2018年第3期29卷 61-70页

作者： Aneela Zameer Sikander M.Mirza Asifullah Khan Furqan Mir Department of computer and Information sciences Pakistan Institute of Engineering and Applied Sciences (PIEAS) Department of Physics and applied Mathematics Pakistan Institute of Engineering and Applied Sciences (PIEAS) Department of Nuclear Engineering Pakistan Institute of Engineering and Applied Sciences (PIEAS)

Fuel reload pattern optimization is essential for attaining maximum fuel burnup for minimization of generation cost while minimizing power peaking factor(PPF).The aim of this work is to carry out detailed assessment of particle swarm optimization(PSO) in the context of fuel reload pattern search. With astronomically large number of possible loading patterns, the main constraints are limiting local power peaking factor, fixed number of assemblies,fixed fuel enrichment, and burnable poison rods. In this work, initial loading pattern of fixed batches of fuel assemblies is optimized by using particle swarm optimization technique employing novel feature of varying inertial weights with the objective function to obtain both flat power profile and cycle k_(eff)>1. For neutronics calculation, PSU-LEOPARD-generated assembly depletiondependent group-constant-based ADD files are used. The assembly data description file generated by PSU-LEOPARD is used as input cross-section library to MCRAC code, which computes normalized power profile of all fuel assemblies of PWR nuclear reactor core. The standard PSO with varying inertial weights is then employed to avoid trapping in local minima. A series of experiments havebeen conducted to obtain near-optimal converged fuelloading pattern of 300 MWe PWR Chashma reactor. The optimized loading pattern is found in good agreement with results found in literature. Hybrid scheme of PSO with simulated annealing has also been implemented and resulted in faster convergence.

关键词： PWR Loading pattern optimization PSO PPF In-core fuel management

Comparative Studies on Hydrophilic and Hydrophobic Segments Grafted Poly(vinyl chloride)

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Chinese Journal of Polymer Science 2018年第5期36卷 604-611页

作者： Yan Zhang Zi-Peng Yuan Yu Qin Ji Dai Tao Zhang Department of Biomedical Engineering College of Engineering and Applied Sciences Nanjing University

Poly（vinyl chloride）（PVC） is one of the mostly produced plastics in the world and is widely used in single-use medical devices. However, the additives that are often necessary for PVC arouse concerns of its safety, thus quests the modifications of PVC itself. In this study, poly（ethylene glycol）（PEG） and polydimethylsiloxane（PDMS） segments were grafted onto PVC backbone in similar ways, and the chemical structures of the modified PVCs were characterized by Fourier transform infrared spectra, X-ray photoelectron spectra, thermogravimetric analysis and differential scanning calorimetry. Moreover, the water contact angle, protein adsorption, platelet adhesion, cell attachment and proliferation on different material surfaces were studied and compared. It was found that both PEG and PDMS grafting yielded improvement on biocompatibility compared with bare PVC, while hydrophobic PDMS grafted PVC showed more effective on cell attachment and proliferation than that of hydrophilic PEG grafted PVC.

关键词： Poly(vinyl chloride) Poly(ethylene glycol) Polydimethylsiloxane Grafting Biomedical properties

Composting of Disposal Organic Wastes: Resource Recovery for Agricultural Sustainability

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过程工程学报 2006年第4期6卷 585-591页

作者： Mohammad H.Golabi Peggy Denney Clancy Iyekar college of Natural and applied sciences University of Guam Mangilao Guam-USA

One of the major problems of agricultural soils in the tropical regions of the Pacific is the low organic matter *** of the hot and humid environment,the soil organic matter(SOM)is minimal due to rapid *** organic material is being applied on agricultural fields as an amendment to provide nutrients and enhance the organic matter content for improving the physical and chemical properties of the cultivated *** addition land application of composted material as a fertilizer source effectively disposes of wastes that otherwise are buried in *** our soil program at the University of Guam,we are evaluating the use of organic material as an alternative to synthetic *** goal is to develop management strategies and use available resources for improving crop production while conserving resources and preserving environmental *** case study project is designed to improve soil fertility status by using composted organic wastes and assessing how the nitrogen and other essential nutrients contribute to long-term soil fertility and crop productivity without application of synthetic *** our pilot project,compost is produced from wood chips,grinded typhoon debris mixed with animal manure,fish feed,shredded paper and other organic *** compost is then applied on the field at the rates of 0,5,10 and 20 t/ha as a soil amendment on the eroded cobbly soils of southern *** is planted and monitored for growth performance and *** effect of land application of composted material on the SOM content and overall soil quality indices are being evaluated in this pilot study.

关键词： composting resource recovery management soil improvement waste disposal agricultural sustainability

一种基于偶氮键一级断裂与C–C键二级断裂释放药物的β-lapachone高分子纳米前药用于肿瘤选择性治疗（英文）

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Science China Materials 2025年

作者：赵唯栋郑梦飞褚虹宇张景宣王昆杨晨光沈娜汤朝晖 Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of applied Chemistry and Engineering University of Science and Technology of China Department of Gastrointestinal Colorectal and Anal Surgery China-Japan Union Hospital of Jilin University Department of Pathogenbiology State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases College of Basic Medicine Jilin University

lapachone (β-Lap)是一种极具潜力的邻萘醌类抗肿瘤药物,但β-Lap临床应用受限于低水溶性和严重的毒副作用.前药修饰策略可有效增强药物的肿瘤选择性,但β-Lap受限于缺乏可修饰基团.本文设计了一种新型偶氮键一级断裂和碳碳键(C–C)二...

lapachone (β-Lap)是一种极具潜力的邻萘醌类抗肿瘤药物,但β-Lap临床应用受限于低水溶性和严重的毒副作用.前药修饰策略可有效增强药物的肿瘤选择性,但β-Lap受限于缺乏可修饰基团.本文设计了一种新型偶氮键一级断裂和碳碳键(C–C)二级断裂的β-Lap高分子纳米前药(Azo-Lap NP),自消除的对氨基苯基连接子通过偶氮键连接聚谷氨酸,在高表达NQO1和低pH的肿瘤环境下,实现肿瘤响应性β-Lap释放. Azo-Lap NPs对β-Lap的有效共价负载可显著提高β-Lap的给药剂量,并延长药物的肿瘤停留时间.此外, Azo-Lap NPs通过避免溶血和高铁血红蛋白的产生显著降低β-Lap的毒副作用.通过小鼠抑瘤实验验证了Azo-Lap NPs安全性.在4T1模型中, Azo-Lap NPs组的抑瘤率明显高于β-Lap组.本研究为肿瘤选择性递送β-Lap提供了一种更有效且安全的高分子纳米前药.

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On two Hall algebra approaches to odd periodic triangulated categories

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Science China Mathematics 2018年第2期61卷 317-324页

作者： Jie Sheng Xueqing Chen Fan Xu Department of applied Mathematics College of Science China Agricultural University Department of Mathematical and computer sciences University of Wisconsin-Whitewater Department of Mathematical sciences Tsinghua University

Given an odd-periodic algebraic triangulated category, we compare Bridgeland's Hall algebra in the sense of Bridgeland(2013) and Gorsky(2014), and the derived Hall algebra in the sense of Ten(2006), Xiao and Xu(2008) and Xu and Chen(2013), and show that the former one is the twisted form of the tensor product of the latter one and a suitable group algebra.

关键词： Hall algebra derived Hall algebra odd-periodic triangulated category