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面条模型中空间关系动态推断方法的研究

李成名

《中国工程科学》 2013年第15卷第5期页码 37-41

摘要：

本文首先提出了面条模型的概念，进而指出基于面条模型的图形处理系统如果不具备动态生成空间关系的能力，就会退化为简单的地理数据库，提出了面条模型中动态推断空间关系的基于Voronoi图的四邻近数学模型（4-adj模型），给出了唯一、完备的推断规则，并指出其优点和不足。

关键词：面条模型面条目标 Voronoi图 4-adj模型

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张正彦：融合知识的预训练语言模型（2020年4月3日）

2022年04月18日

关键词：工程管理

一类新的光电神经元模型及其动力学 Research Articles

刘勇1,徐万江1,马军2,3,Faris ALZAHRANI4,Aatef HOBINY4

《信息与电子工程前沿（英文）》 2020年第21卷第9期页码 1387-1396 doi: 10.1631/FITEE.1900606

摘要：实际上，可靠的神经元模型应考虑内在的生物物理效应以及功能性编码。一个重要且有趣的问题是弄清外界信号转录过程的物理机制。外界信号通常被转化为等效的跨膜电流或信号源以诱发动作电位。提出一个光电神经元模型以表达其非线性编码过程和外界光信号驱动神经元的电活动响应。在该模型中，使用一个光电管激活一个简单的FitzHugh-Nagumo（FHN）神经元电路，并施加外界光信号（光照）于光电管产生时变电流源或电压源以驱动神经元电路。

关键词：光电神经元；神经元模型；分岔；簇放电；光电管

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基于自适应在线双词主题模型的应用程序评论新兴主题识别 Research Article

周芄1,王勇1,2,高翠芸3,杨非4

《信息与电子工程前沿（英文）》 2022年第23卷第5期页码 678-691 doi: 10.1631/FITEE.2100465

摘要：已有文献基于主题模型或聚类方法识别应用程序评论中的新兴主题。然而，由于评论文本长度较短，提供的信息有限，新兴主题识别准确率较低。为解决该问题，提出一种改进的新兴主题识别方法（IETI）。首先采用自然语言处理技术减少评论文本中的噪音数据，然后使用自适应在线双词主题模型识别评论中的新兴主题。最后利用新兴主题中相关的短语和句子解释新兴主题的含义。

关键词：应用程序评论；新兴主题识别；主题模型；自然语言处理

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基于世界模型与图像表示的交通信号控制 Research Article

戴星原1,2,赵宸1,2,王晓3,吕宜生1,2,林懿伦4,王飞跃1,2

《信息与电子工程前沿（英文）》 2022年第23卷第12期页码 1795-1813 doi: 10.1631/FITEE.2200323

摘要：一个有效的预测模型对主动交通信号控制至关重要；其中预测什么交通状态，如何高精度预测，以及如何利用预测优化控制策略是主动交通信号控制研究的关键问题。本文使用车辆位置图像描述路口交通状态，同时受基于模型的强化学习方法DreamerV2的启发，引入基于学习的交通世界模型。该世界模型以图像序列描述交通动态，并作为交通环境的抽象替代以生成多步预测样本用于控制策略优化。在执行阶段，优化后的交通信号控制器根据交通状态的抽象表示直接实时输出控制指令，同时世界模型能够预测不同控制行为对未来交通状态的影响。实验结果表明，基于交通世界模型优化的控制策略的性能优于一般基准，并且世界模型实现了基于图像的高精度预测；这些结果显示了世界模型在未来交通信号控制中的应用前景。

关键词：交通信号控制；交通预测；交通世界模型；强化学习

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ZnFe₂O₄/BiVO₄ Z-scheme heterojunction for efficient visible-light photocatalytic

《化学科学与工程前沿（英文）》 2023年第17卷第11期页码 1728-1740 doi: 10.1007/s11705-023-2322-z

摘要： A novel Z-scheme ZnFe₂O₄/BiVO₄ heterojunction photocatalyst was successfully synthesized using a convenient solvothermal method and applied in the visible light photocatalytic degradation of ciprofloxacin, which is a typical antibiotic contaminant in wastewater. The heterostructure of as-synthesized catalysts was confirmed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy characterizations. Compared with the single-phase counterparts, ZnFe₂O₄/BiVO₄ demonstrated considerably enhanced photogenerated charge separation efficiencies because of the Z-scheme transfer mechanism of electrons between the composite photocatalysts. Consequently, the 30% ZnFe₂O₄/BiVO₄ catalyst afforded a degradation rate of up to 97% of 20 mg/L ciprofloxacin under 30 min of visible light irradiation with a total organic carbon removal rate of 50%, which is an excellent activity compared with ever reported BiVO₄-based catalysts. In addition, the liquid chromatography-mass spectrometry and quantitative structure-activity relationships model analyses demonstrated that the toxicity of the intermediates was lower than that of the parent ciprofloxacin. Moreover, the as-synthesized ZnFe₂O₄/BiVO₄ heterojunctions were quite stable and could be reused at least four times. This study thus provides a promising Z-scheme heterojunction photocatalyst for the efficient removal and detoxication of antibiotic pollutants from wastewater.

关键词： ZnFe₂O₄/BiVO₄ Z-scheme heterojunction photocatalytic degradation ciprofloxacin

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Li₄SiO₄-coated LiNi_0.5Mn_1.5O₄ as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

《能源前沿（英文）》 2017年第11卷第3期页码 374-382 doi: 10.1007/s11708-017-0494-2

摘要： The preparation of Li SiO -coated LiNi Mn O materials by sintering the SiO -coated nickel-manganese oxides with lithium salts using abundant and low-cost sodium silicate as the silicon source was reported. The samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. It was found that a uniform and complete SiO coating layer could be obtained at a suitable pH value of 10, which transformed to a good Li SiO coating layer afterwards. When used as the cathode materials for lithium-ion batteries, the Li SiO -coated LiNi Mn O samples deliver a better electrochemical performance in terms of the discharge capacity, rate capability, and cycling stability than that of the pristine material. It can still deliver 111.1 mAh/g at 20 C after 300 cycles, with a retention ratio of 93.1% of the stable capacity, which is far beyond that of the pristine material (101.3 mAh/g, 85.6%).

关键词： lithium-ion batteries cathode material LiNi_0.5Mn_1.5O₄ lithium-ion conductor coating

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Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

《环境科学与工程前沿（英文）》 2020年第14卷第3期 doi: 10.1007/s11783-020-1224-2

摘要： Highly efficient debromination of BDE-47 was achieved in the ZVZ/AA system. BDE-47 debromination by the ZVZ/AA can be applied to a wide range of pH. AA inhibits the formation of (hydr)oxide and accelerates the corrosion of ZVZ. Reduction mechanism of BDE-47 debromination by the ZVZ/AA system was proposed. A new technique of zero-valent zinc coupled with ascorbic acid (ZVZ/AA) was developed and applied to debrominate the 2,2′,4,4′-Tetrabromodiphenyl ether (BDE-47), which achieved high conversion and rapid debromination of BDE-47 to less- or non-toxic forms. The reaction conditions were optimized by the addition of 100 mg/L ZVZ particles and 3 mmol/L AA at original solution pH= 4.00 using the solvent of methanol/H2O (v:v= 4:6), which could convert approximately 94% of 5 mg/L BDE-47 into lower-brominated diphenyl ethers within a 90 min at the ZVZ/AA system. The high debromination of BDE-47 was mainly attributed to the effect of AA that inhibits the formation of Zn(II)(hydr)oxide passivation layers and promotes the corrosion of ZVZ, which leads to increase the reactivity of ZVZ. Additionally, ion chromatography and gas chromatography mass spectrometry analyses revealed that bromine ion and lower-debromination diphenyl ethers formed during the reduction of BDE-47. Furthermore, based on the generation of the intermediates products, and its concentration changes over time, it was proposed that the dominant pathway for conversion of BDE-47 was sequential debromination and the final products were diphenyl ethers. These results suggested that the ZVZ/AA system has the potential for highly efficient debromination of BDE-47 from wastewater.

关键词： 2 2′ 4 4′-tetrabromodiphenyl ether (BDE-47) Ascorbic acid Reductive debromination Zero-valent zinc

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Knockdown of RFC4 inhibits the cell proliferation of nasopharyngeal carcinoma and

《医学前沿（英文）》 2023年第17卷第1期页码 132-142 doi: 10.1007/s11684-022-0938-x

摘要： Nasopharyngeal carcinoma (NPC) is a malignant tumor that mainly occurs in East and Southeast Asia. Although patients benefit from the main NPC treatments (e.g., radiotherapy and concurrent chemotherapy), persistent and recurrent diseases still occur in some NPC patients. Therefore, investigating the pathogenesis of NPC is of great clinical significance. In the present study, replication factor c subunit 4 (RFC4) is a key potential target involved in NPC progression via bioinformatics analysis. Furthermore, the expression and mechanism of RFC4 in NPC were investigated in vitro and in vivo. Our results revealed that RFC4 was more elevated in NPC tumor tissues than in normal tissues. RFC4 knockdown induced G2/M cell cycle arrest and inhibited NPC cell proliferation in vitro and in vivo. Interestingly, HOXA10 was confirmed as a downstream target of RFC4, and the overexpression of HOXA10 attenuated the silencing of RFC4-induced cell proliferation, colony formation inhibition, and cell cycle arrest. For the first time, this study reveals that RFC4 is required for NPC cell proliferation and may play a pivotal role in NPC tumorigenesis.

关键词： nasopharyngeal carcinoma WGCNA RFC4 proliferation

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4D打印定律 Article

Farhang Momeni, Jun Ni

《工程（英文）》 2020年第6卷第9期页码 1035-1055 doi: 10.1016/j.eng.2020.01.015

摘要：相应地，四维(4D)打印是一个涉及多个研究领域的制造工艺。4D打印保留了3D打印的一般属性(如减少材料浪费、消除注射模具、冲压模具和机械加工过程)，并且随着时间的推移能实现产品第四维度的智能行为。3D和4D打印结构的主要区别是4D打印存在一个附加的维度，这个维度可以随着时间的推移进行智能进化。然而，目前还没有用于建模和预测这个附加维度的一般公式。研究表明，需要利用两种类型的时间常数来捕捉4D多材料的正确的时间相关性行为。本文引入了4D多材料结构中主动材料和被动材料的界面错配压力的概念，从而得到了两个时间常数之一。本文从几乎所有刺激响应材料的时间相关性行为的统一模型中开发和提取另一个时间常数。本文的结果从最基本的概念开始，并以控制方程结束，可以作为未来4D打印领域研究的一般设计原则，其中时间相关性行为应该被正确地理解、建模和预测。

关键词：制造业刺激响应材料材料力学时间常数 4D打印

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Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

《化学科学与工程前沿（英文）》 2022年第16卷第7期页码 1090-1100 doi: 10.1007/s11705-021-2091-5

摘要： Twenty six novel pyrimidin-4-amine derivatives containing the 1,2,4-oxadiazole motif were synthesized. Their chemical structures were confirmed by ¹H nuclear magnetic resonance (NMR), ¹³C NMR, and high-resolution mass spectrography. The insecticidal activity results indicated that some of them possessed excellent insecticidal activity (100%) against Mythimna separate, especially for compounds 6d, 6f, 6o, 6w, 6y and 6z. These compounds exhibited no activity against the insects Aphis medicagini and Tetranychus cinnabarinus. The structure- insecticidal activity relationships are discussed. Density functional theory analysis can potentially be used to design more active compounds. These results provide useful insecticide design information for further optimization.

关键词： synthesis pyrimidin-4-amine derivatives 1 2 4-oxadiazole insecticidal activity structure-activity relationship

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Identifying stakeholders’ roles and relevant project documents for 4D-based collaborative decision making

Veronika BOLSHAKOVA, Annie GUERRIERO, Gilles HALIN

《工程管理前沿（英文）》 2020年第7卷第1期页码 104-118 doi: 10.1007/s42524-019-0041-4

摘要： To fully understand and effectively implement 4D building information modelling (BIM) models and methods, we need to develop a precise knowledge of which project digital documents should be used and how they influence the decision-making (DM) process. This article studies the convergence between uses of 4D BIM and digital project documents. We hypothesize that a clear visualization of the construction simulation through a 4D model is a useful source of information and a support for DM at collaborative meetings. Through this research, we continue to progress toward a new 4D-based collective decision device, so these elements will contribute to propose 4D BIM as DM support on architecture engineering construction (AEC) projects. Further, the present research will be complemented by results from questionnaires given at a later research stage. The article presents a brief review of BIM context to consider ways of fostering the implementation of all 4D BIM uses (not only visualization). It then introduces a proposition for 4D BIM uses implementation by the project development phase. It concludes by summarizing stakeholders’ roles and documents relevant to 4D BIM uses.

关键词： BIM 4D BIM 4D BIM use AEC project management collaboration decision making

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4Pi荧光超分辨显微术综述 Review

郝翔, 李依明, 傅爽, 李旸晖, 许迎科, 匡翠方, 刘旭

《工程（英文）》 2022年第11卷第4期页码 146-153 doi: 10.1016/j.eng.2020.07.028

摘要：回顾这些历程，一个重要的里程碑是基于两个对置物镜的4Pi 显微架构及其超分辨版本的出现。鉴于此，本文综述了4Pi 超分辨显微术的近期进展。总体上，4Pi 超分辨显微镜为透明样品观测提供了一
种能够突破衍射极限、非侵入、各向同性的三维分辨率的技术手段。具体而言，本文针对目标开关和随机开关两个主要4Pi 超分辨显微术版本，讨论了它们的架构、原理、应用和未来发展趋势。

关键词：荧光超分辨显微术超分辨成像 4Pi超分辨显微术 isoSTED 4Pi-SMLM

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对双层组件4D打印可逆性的初步研究 Article

Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang

《工程（英文）》 2019年第5卷第6期页码 1159-1170 doi: 10.1016/j.eng.2019.09.007

摘要：

增材制造的快速发展和形状记忆聚合物材料的进步推动了四维（4D）打印技术的进展。随着设计方面的不断改进，逐渐证明有可能实现可逆4D打印或双向4D打印。这项技术将完全消除对人为干预的需要，因为编程完全由外部刺激驱动，这使得4D打印部件可以在多个周期内启动。本研究提出了一种新的可逆4D打印驱动方法，其中弹性体的溶胀和热量用于编程阶段，以及热量用于恢复阶段。本研究的主要重点在于自驱动设计这一步骤。为了实现对弯曲的控制，已经开发了一种简单的预测模型用于研究曲率。此外，为了更好地了解模型对曲率的预测程度，对参数、温度和弹性体厚度也进行了研究。采用这种方式理解曲率可以提供对可逆4D打印结构的高度控制。

关键词： 4D打印增材制造形状记忆聚合物可逆4D打印双向4D打印溶胀弹性体

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Recombinant aspartate aminotransferase-catalyzed synthesis of L-4-fluorophenylalanine

CHEN Meijuan, JIA Honghua, CHEN Yongsheng, JIANG Min, WEI Ping

《化学科学与工程前沿（英文）》 2008年第2卷第2期页码 220-223 doi: 10.1007/s11705-008-0041-0

摘要： L-4-Fluorophenylalanine (FPhe) was prepared from 4-fluorophenylpyruvate (FPPA) catalyzed by aspartate aminotransferase (Asp-AT) of the recombinant BL21-pET/aspC. After 12 h enzymatic reaction, the FPPA conversion was over 90% and the yield of FPhe could be above 85% under the following optimal conditions: 37°C, pH value range of 5.0–8.0, 5.5 mass ratio of cell to FPPA, 0.6% (w/v) of Tween 80, 7.08 g/L FPPA, and 1.6 of molar ratio of L-Asp to FPPA.

关键词： L-4-Fluorophenylalanine Asp-AT aspartate aminotransferase 4-fluorophenylpyruvate FPPA