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A Cross Attention Transformer-Mixed Feedback Video Recommendation Algorithm Based on DIEN

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Computers, Materials & Continua 2025年第1期82卷 977-996页

作者： Jianwei Zhang Zhishang Zhao Zengyu Cai Yuan Feng Liang Zhu Yahui Sun college of Software Engineering Zhengzhou University of Light IndustryZhengzhou450000China Faculty of Information Engineering Xuchang Vocational Technical CollegeXuchang461000China college of Computer Science and Technology Zhengzhou University of Light IndustryZhengzhou450000China college of Electronics and Information Zhengzhou University of Light IndustryZhengzhou450000China

The rapid development of short video platforms poses new challenges for traditional recommendation *** systems typically depend on two types of user behavior feedback to construct user interest profiles:explicit feedback(interactive behavior),which significantly influences users’short-term interests,and implicit feedback(viewing time),which substantially affects their long-term ***,the previous model fails to distinguish between these two feedback methods,leading it to predict only the overall preferences of users based on extensive historical behavior ***,it cannot differentiate between users’long-term and shortterm interests,resulting in low accuracy in describing users’interest states and predicting the evolution of their *** paper introduces a video recommendationmodel calledCAT-MFRec(CrossAttention Transformer-Mixed Feedback Recommendation)designed to differentiate between explicit and implicit user feedback within the DIEN(Deep Interest Evolution Network)*** study emphasizes the separate learning of the two types of behavioral feedback,effectively integrating them through the cross-attention ***,it leverages the long sequence dependence capabilities of Transformer technology to accurately construct user interest profiles and predict the evolution of user *** results indicate that CAT-MF Rec significantly outperforms existing recommendation methods across various performance *** advancement offers new theoretical and practical insights for the development of video recommendations,particularly in addressing complex and dynamic user behavior patterns.

关键词： Video recommendation user interest cross-attention transformer

Microstructure of Fe-Based Alloy Composite Coatings Reinforced by Ti(C_(0.3)N_(0.7)) Particles Through Laser Cladding Technology

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Journal of Iron and Steel Research International 2013年第8期20卷 78-82页

作者： QI Yong-tian CAO Zhao-xia SHENG Li-ying CAO Run-ping Inner Mongolia baotou vocational and technical college

Fe-based alloy layer reinforced by Ti（C,N） particles was produced on the surface of cast steel. X ray dif fraction （XRD） was used for phase identification in the composite coating. The microstructure of laser cladding layer was analyzed by means of optical microscope （OM）, electron probe microscope analyzer （EPMA）, scanning electron microscope （SEM） and transmission electron microscope （TEM）. The results show that Ti（C0.3 N0.7 ） particle is in-troduced by an in situ metallurgical reaction of TiN particle and graphite powder in the process of laser cladding. The shape of lots of Ti（C0.3 N0.7） particle is irregular. The sizes of Ti（C0. 3N0. 7） particles range from 0. 1 to 6.0 μm, and they are dispersed evenly in the matrix, which is fine dendritic or cellular crystal. A new kind of phase named Ti（C0.3 N0. 7 ） parti-cles are tightly bonded with α-Fe microstructure, and there is a clean and smooth phase interface between ceramic re-inforcement phase and the matrix.

关键词： Ti(C0.3 N0.7 ) particle TiN laser cladding microstructure

Efficient OpenMP Based Z-curve Encoding and Decoding Algorithms

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Computers, Materials & Continua 2025年第1期82卷 1313-1327页

作者： Zicheng Zhou Shaowen Sun Teng Liang Mengjuan Li Fengling Xia School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China School of Communications Information Engineering Yunnan Communications Vocational and Technical CollegeKunming650500China Library Yunnan Normal UniversityKunming650500China Faculty of Civil Aviation and Aeronautics Kunming University of Science and TechnologyKunming650500China

Z-curve’s encoding and decoding algorithms are primely important in many Z-curve-based *** bit interleaving algorithm is the current state-of-the-art algorithm for encoding and decoding *** simple,its efficiency is hindered by the step-by-step coordinate shifting and bitwise *** tackle this problem,we first propose the efficient encoding algorithm LTFe and the corresponding decoding algorithm LTFd,which adopt two optimization methods to boost the algorithm’s efficiency:1)we design efficient lookup tables(LT)that convert encoding and decoding operations into table-lookup operations;2)we design a bit detection mechanism that skips partial order of a coordinate or a Z-value with consecutive 0s in the front,avoiding unnecessary iterative *** propose order-parallel and point-parallel OpenMP-based algorithms to exploit the modern multi-core *** results on discrete,skewed,and real datasets indicate that our point-parallel algorithms can be up to 12.6×faster than the existing algorithms.

关键词： Z-curve lookup table OpenMP bit detection mechanism

ICA-Net: improving class activation for weakly supervised semantic segmentation via joint contrastive and simulation learning

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Optoelectronics Letters 2025年第3期21卷 188-192页

作者： YE Zhuang LIU Ruyu SUN Bo School of Information Engineering Chengdu Aviation Vocational and Technical College School of Computer Science and Engineering Hangzhou Normal University Quanzhou Institute of Equipment Manufacturing Haixi Institutes Chinese Academy of Sciences

In the field of optoelectronics, certain types of data may be difficult to accurately annotate, such as high-resolution optoelectronic imaging or imaging in certain special spectral ranges. Weakly supervised learning can provide a more reliable approach in these situations. Current popular approaches mainly adopt the classification-based class activation maps (CAM) as initial pseudo labels to solve the task.

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Improving microstructure and mechanical properties of Ti43Al5Nb0.1B alloy by addition of Fe

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Rare Metals 2019年第11期38卷 1024-1032页

作者： Yong Yang Rui-Run Chen Hong-Ze Fang Jing-Jie Guo Hong-Sheng Ding Yan-Qing Su Heng-Zhi Fu School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Materials Engineering Baotou Vocational&Technical CollegeBaotou 014030China

Alloying additions of 0 at%-1.1 at% Fe were added into Ti43A1Nb0.1B alloys for increasing the roomtemperature strength and ductility,and the microstructure and mechanical properties were systematically *** results show that the lattice tetragonality(c/a) of γ phase and the average width of columnar grains of alloys decrease with Fe content *** addition brings about the formation of Fe-rich B2 phase both in the dendrites and in interdendritic regions,and its content increases with Fe contents ***,Fe addition aggravates the Al segregations in the interdendritic *** alloy with 0.7 at% Fe exhibits higher combined mechanical properties with the ultimate compression strength and fracture strain of 1958.4 MPa and 29.8%,*** grain refinement strengthening and solid-solution strengthening of Fe are responsible for the improvement in the strength and the ***,excessive Fe addition results in the decrease in the strength and strain,which is attributed to the severe A1 segregations in the interdendritic regions that cause the premature fracture during compression.

关键词： TiAl Fe B2 phase Microstructure Mechanical properties

Spin current and its heat effect in a multichannel quantum wire with Rashba spin-orbit coupling

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Chinese Physics B 2011年第7期20卷 387-392页

作者：宋占锋王亚东邵慧彬孙志刚 Zhangjiakou vocational and technical college

Using the perturbation method, we theoretically study the spin current and its heat effect in a multichannel quantum wire with Rashba spin-orbit coupling. The heat generated by the spin current is calculated. With the increase of the width of the quantum wire, the spin current and the heat generated both exhibit period oscillations with equal amplitudes. When the quantum-channel number is doubled, the oscillation periods of the spin current and of the heat generated both decrease by a factor of 2. For the spin current js,xy, the amplitude increases with the decrease of the quantum channel; while the amplitude of the spin current js,yx remains the same. Therefore we conclude that the effect of the quantum-channel number on the spin current js,xy is greater than that on the spin current js,yx. The strength of the Rashba spin-orbit coupling is tunable by the gate voltage, and the gate voltage can be varied experimentally, which implies a new method of detecting the. spin current. In addition, we can control the amplitude and the oscillation period of the spin current by controlling the number of the quantum channels. All these characteristics of the spin current will be very important for detecting and controlling the spin current, and especially for designing new spintronic devices in the future.

关键词： multichannel quantum wire Rashba spin-orbit coupling spin current heat produced by spin current

Microstructure and mechanical property of laser cladding Fe-based alloy composite coating reinforced by Ti （ C0.3 No. 7 ） particulates

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China Welding 2012年第3期21卷 17-21页

作者：齐勇田曹润平曹朝霞邹增大 Department of Materials Engineering Inner Mongolia Baotou Vocational and Technical CollegeBaotou014030 School of Materials Science and Engineering Shandong UniversityJinan250061

Fe-based alloy coatings reinforced by Ti（ C, N） particles was produced through CO2 laser cladding technology. The microstructure of laser cladding coating was analyzed by means of X-ray diffraction （ XRD ）, transmission electron microscopy （TEM） , selected area electron diffraction （ SAED ） , scanning electron microscopy （SEM） and electron probe microscopic analyzer （ EPMA ）. The mechanical property of the layer was measured by using microhardness meter. The results show that Ti （ C0. 3 N0. 7 ） panicles are introduced by an in-situ metallurgical reaction between TiN particle and graphite powder during laser cladding process. Titanium carbonitrides particles existed in the layer are fairly fine, ranging from 0. 1 μm to 5.0 μm, and evenly dispersed in the metal α-Fe matrix. Most of them take on nearly rhombus shape, and some of them are irregular in shape. The microhardness of laser cladding layer ranges from 770 HV0. 3 to 850 HV0. 3.

关键词： Ti (C0.3 N0.7 ) TiN in-situ formation laser cladding microhardness

Finite Element Analysis of 100 t Hot Metal Ladle in Process of Tipping

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Journal of Iron and Steel Research International 2010年第11期17卷 19-23页

作者： TIAN Hong-yu CHEN Fu-rong XIE Rui-jun LI Shi-hui college of Materials Science and Engineering Inner Mongolia University of Technology Hohhot 010051 Inner Mongolia China Department of Mechanical and Electrical Engineering Baotou Light Industry Vocational and Technical College Baotou 014035 Inner Mongolia China

Hot metal ladle is an important part in continuous casting production line and its stress distribution has direct influence on its life. In the process of design and calibration of the large-sized hot metal ladle, it is of great significance to determine the stress distribution of each part of the ladle for safely and reliably running the device. Based on 100 t hot metal ladle which is designed by baotou Iron and Steel Group, simulation of stress field was made by finite element software ANSYS 10.0 from different dumping angles. Through modeling, loading, restricting and calculating, strain and stress field distribution of the hot metal ladle were acquired. Finally, an assessment of strength and stiffness was made on the hot metal ladle. The results show that in the process of tipping for the hot metal ladle, maximum stress is 132 MPa and maximum strain is only 0. 064% ; maximum stress and strain have appeared in the stiffener plate which is located at the bottom of the trunnion, and strength and stiffness are qualified. The method, which is convenient and practical, reasonable and reliable, provides theoretical evidence for checking analysis and further optimal design of the hot metal ladle.

关键词： hot metal ladle stress field finite element analysis

Secure blockchain bidding auction protocol against malicious adversaries

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High-Confidence Computing

High-Confidence Computing 2024年第3期4卷 58-63页

作者： Xiaobing Dai Jiajing Liu Xin Liu Xiaofen Tu Ruexue Wang Department of Computer and Information Engineering Baotou Vocational&Technical CollegeBaotou 014010China Department of Computer Tianjin Ren’ai CollegeTianjin 301636China School of Information Engineering Inner Mongolia University of Science and TechnologyBaotou 014010China

In recent years,with the development of blockchain,electronic bidding auction has received more and more *** at the possible problems of privacy leakage in the current electronic bidding and auction,this paper proposes an electronic bidding auction system based on blockchain against malicious adversaries,which uses the secure multi-party computation to realize secure bidding auction protocol without any trusted third *** protocol proposed in this paper is an electronic bidding auction scheme based on the threshold elliptic curve *** can be implemented without any third party to complete the bidding auction for some malicious behaviors of the participants,which can solve the problem of resisting malicious adversary *** security of the protocol is proved by the real/ideal model paradigm,and the efficiency of the protocol is *** efficiency of the protocol is verified by simulating experiments,and the protocol has practical value.

关键词： Blockchain Secure multi-party computation Electronic bidding auction Malicious model Real/ideal model paradigm