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

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

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History and perspectives of induction technology for agarwood production from cultivated Aquilaria in Asia: a review

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Journal of forestry Research 2019年第1期30卷 1-11页

作者： Putra Desa Azren Shiou Yih Lee Diana Emang Rozi Mohamed forest Biotech Laboratory Department of Forest Management Faculty of Forestry Universiti Putra Malaysia Department of forest Management Faculty of ForestryUniversiti Putra Malaysia

Agarwood, the resinous product of Aquilaria spp.(Thymelaeaceae), is highly valued for medicinal and fragrant purposes. Unsustainable forest harvesting contributes to the declining population in the wild, threatening their existence. As a protection effort, cultivation occurred in range countries, mainly in Asia, effectively establishing mass plantations. The success of domesticating Aquilaria relies heavily on technological advancement in agarwood induction, without which the entire thriving industry will collapse. In this paper, we describe efforts since 1929 and current progress and variation in induction as practiced in Asia. The methods include traditional practices and artificial induction via inoculum and chemical inducer, experimented and patented or otherwise. Artificial induction methods are being developed to intensify agarwood production in terms of yield and quality. While traditional methods are commonly applied by rural planters, artificial methods with the use of specific agents/chemicals are seen as more appealing for inducing agarwood, and have a higher demand from entrepreneurs and plantation *** issues related to induction technology faced by stakeholders in agarwood cultivation are presented, such as safety levels, cost, yields, and quality. We conclude by highlighting remaining challenges in induction methods and their associated technologies.

关键词： Aquilaria Agarwood Cultivation 'Gaharu’ Inducer Inoculum

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Modeling and Analysis of Mechanization Projects of Wheat Production by GERT Networks

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Agricultural Sciences in China 2010年第7期9卷 1078-1083页

作者： Reza Abdi Hamid Reza Ghasemzadeh Shamsollah Abdollahpour Majid Sabzeparvar Adel Dabbag Mohamadi Nasab faculty of Agriculture University of Tabriz faculty of Industrial University of Science and Industry(Iran)

In crop production systems,all operations such as seed bed preparation,etc.,must be accomplished on time,if yield reduction and low quality product are to be *** all operations in mechanized cropping projects require precise scheduling,planning and *** basic approach in all scheduling techniques is to form a network of activities and events relationships that graphically portrays the sequential relations between the tasks in a *** a network would as a powerful tool available a farm manager to plan,schedule,monitor and control a *** GERT（Graphical Evaluation and Review Technique） networks have most of advantages associated with networks and available system analyst in exact evaluation of certain types of networks,in this research it was used and mechanized wheat production system was simulated,modeled and *** activities,events and path were *** showed that the network model was able to answer any statistic questions concerning with the *** models,particularly GERT networks are increasingly powerful tool for modeling,scheduling,planning,controlling,and analyzing of agricultural mechanization projects.

关键词： GERT networks mechanization project scheduling wheat

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Effect of thermal treatment on the swelling and surface roughness of common alder and wych elm wood

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Journal of forestry Research 2016年第1期27卷 225-229页

作者： Ayhan Aytin Suleyman Korkul Program of Furniture and Decoration Duzce Vocational School Duzce University Diizce Turkey Department of forest industry Engineering Faculty of Forestry Duzce University Diizce Turkey

Wood heat treatment has increased signifi- cantly in recent years and is still growing as an industrial process to improve some wood properties. We studied the change of swellingand surface roughness of common alder （Alnus glutinosa （L.） Gaertn. ***） and wych elm （Ulmus glabra Huds.） woods after heat treatment at two different temperatures and durations. The temperatures were 180 and 200 ℃ and the durations were 2 and 4 h. A stylus method was employed to evaluate the surface char- acteristics of the samples. Roughness measurements by the stylus method were made in the direction perpendicular to the fiber on the wood surface. Four main roughness parameters, mean arithmetic deviation of profile （Ra）, mean peak-to-valley height （Rz）, root mean square roughness （Rq）, and maximum roughness （Ry） were used to evaluate the effect of heat treatment on the surface characteristics of the specimens. Swelling and surface roughness parameters （Ra, Rz, Ry, and Rq） differed significantly for two temper- atures and two durations of heat treatment. Swelling and surface roughness values decreased with increasing treat- ment temperature and treatment times.

关键词： Heat treatment Swelling Surfaceroughness. Common alder Wych elm

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Static and dynamic analysis of functionally graded fluidinfiltrated porous skew and elliptical nanoplates using an isogeometric approach

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Frontiers of Structural and Civil Engineering 2023年第3期17卷 477-502页

作者： Tran Thi Thu THUY faculty of Mechanical Engineering Hanoi University of IndustryHanoi 100000Vietnam

The analysis of static bending and free and forced vibration responses of functionally graded fluidinfiltrated porous(FGFP)skew and elliptical nanoplates placed on Pasternak’s two-parameter elastic foundation is performed for the first time using isogeometric analysis(IGA)based on the non-uniform rational B-splines(NURBSs)basis *** types of porosity distributions affect the mechanical characteristics of materials:symmetric distribution,upper asymmetric distribution,and lower asymmetric *** stress–strain relationship for Biot porous materials was determined using the elastic *** general equations of motion of the nanoplates were established using the four-unknown shear deformation plate theory in conjunction with the nonlocal elastic theory and Hamilton’s principle.A computer program that uses IGA to determine the static bending and free and forced vibration of a nanoplate was developed on MATLAB software *** accuracy of the computational program was validated via numerical comparison with confidence *** set of programs presents the influence of the following parameters on the static bending and free and forced vibrations of nanoplates:porosity distribution law,porosity coefficient and geometrical parameters,elastic foundation,deviation angle,nonlocal coefficient,different boundary conditions,and Skempton *** numerical findings demonstrated the uniqueness of the FGFP plate’s behavior when the porosities are saturated with liquid compared with the case without *** findings of this study have significant implications for engineers involved in the design and fabrication of the aforementioned type of ***,this can form the basis for future research on the mechanical responses of the structures.

关键词： static bending free and forced vibrations nonlocal theory isogeometric analysis fluid-infiltrated porous nanoplates

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Ethanol dry reforming for syngas production over Ir/CeO_2 catalyst

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Journal of Rare Earths 2015年第1期33卷 42-45页

作者：侯腾飞雷雨声张绍印张江华蔡伟杰 faculty of Light industry and Chemical Engineering Dalian Polytechnic University

Syngas production from CO2 reforming of ethanol over an Ir/Ce O2 catalyst was investigated. Catalysts characterization was conducted by X-ray diffraction（XRD）, temperature programmed reduction（TPR）, transmission electron microscopy（TEM） and temperature programmed oxidation（TPO）. The Ir/Ce O2 catalyst was more active and stable toward syngas formation（molar ratio ~1）. The superior catalytic performance was interpreted in terms of the strong interaction between Ir particles and ceria support which was crucial for efficient ethanol/CO2 activation and coke removal on the catalyst surface.

关键词： Ir/CeO2 CO2 ethanol dry reforming syngas rare earths

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A New Dinuclear Gadolinium Complex Constructed from p-Phenylenediamine-N,N,N′,N′-tetraacetic Acid and in situ Generated Oxalate

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Chinese Journal of Structural Chemistry 2012年第9期31卷 1315-1321页

作者：于方永郝志峰李海峰胡升 faculty of Chemical Engineering and Light industry Guangdong University of Technology

Routine solution reaction of Gd3＋ and p-phenylenediamine-N,N,N′,N′-tetraacetic acid （p-PhDTA） yields a dinuclear complex [Gd2（ox）（p-PhDTA）2（H2O）10]·6H2O （ox = oxalate）, which was characterized by single-crystal X-ray diffraction （MoKα radiation, = 0.71073）, elemental analysis and IR. This complex crystallizes in the monoclinic system, space group P21/n with a = 10.2522（8）, b = 10.0053（8）, c = 23.8834（18）, = 99.1080（10）°, V = 2419.0（3）3, Z = 2, Mr = 1367.32, Dc = 1.877 g/cm3, F（000） = 1368, = 2.830 mm-1, the final R = 0.0337 and wR = 0.0794 for 4747 observed reflections （I 〉 2 （I））. The exo-tetradentate oxalate ligand, generated in situ from the oxidative coupling of methanol, is incorporated to construct a dinuclear Gd2（ox）2 unit decorated with p-PhDTA ligands on the two sides with a monodentate coordination mode. The dinuclear molecules are further connected by the lattice water molecules to form a three-dimen- sional hydrogen network.

关键词： Gd(III) complex crystal structure p-phenylenediamine-N,N,N',N'-tetraaceticacid oxalate

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Preparation and Swelling Behaviors of Rapid Responsive Semi-IPN NaCMC/PNIPAm Hydrogels

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Journal of Wuhan University of Technology(Materials Science) 2011年第6期26卷 1073-1078页

作者：易国斌 faculty of Chemical Engineering and Light industry Guangdong University of Technology

Semi-interpenetrating network（semi-IPN） hydrogels composed of sodium carboxylmethylcellulose（NaCMC） and poly N-isopropylacrylamide（PNIPAm） were prepared by free radical polymerization of N-isopropyl acrylamide（NIPAm） in dimethylsulfoxide（DMSO） in the presence of NaCMC. The structures of hydrogels were characterized by Fourier transform infrared spectroscopy（FTIR）, scanning electron microscopy（SEM） and differential scanning calorimetry（DSC）. SEM images show that the hydrogels present porous network structures. Most water in the hydrogels were free water and freezing water. The equilibrium swelling ratio（ESR） and swelling rate（SR） were quite different at various swelling temperature. ESR of the hydrogels ranged abruptly from 15.2 g/g to 1.56 g/g and the hydrogels changed from transparent into opaque with swelling temperature changing from 33 ℃ to 34 ℃, that is to say, the hydrogels exhibited the good temperature sensitivity at about 33 ℃ similar to low critical solution temperature（LCST） of pure PNIPAm, swelling rate were very different at below and above LCST due to hydrogel swelling with different swelling mechanism. Moreover, the semi-IPN hydrogels swelled much rapidly than pure PNIPAm hydrogels did at room temperature, the equillibrium swelling ratio（ESR） and swelling rate of the hydrogels increased with increasing of NaCMC content, i e. It is suggested that NaCMC could be potential for preparation of porous and rapid swelling hydrogels

关键词： sodium carboxylmethylcellulose(NaCMC) N-isopropyl acrylamide(NIPAm) semi-IPN hydrgels characterization

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Identification of polyphenols in white mugwort (Artemisia lactiflora Wall.) ethanolic extracts and their anti-inflammatory and anti-adipogenic activity potential

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Food Bioscience 2022年第3期47卷 1157-1165页

作者： Nacha Udomwasinakun Tantawan Pirak Wasaporn Preteseille Chanput Department of Product Development Faculty of Agro IndustryKasetsart UniversityThailand Department of Food Science and Technology Faculty of Agro IndustryKasetsart UniversityThailand

White mugwort (Artemisia lactiflora Wall.) is known as a medicinal herb containing phytochemicals with antioxidant and *** optimal concentration of ethanol was investigated for extracting polyphenols from the fresh aerial part and dried powder of white mugwort as expressed by total phenolic content (TPC),phenolic compounds,antioxidant,anti-inflammatory,and anti-adipogenic *** various ethanol concentrations (0,25,50 or 95%) used in the extraction process,the freeze-dried extract from fresh aerial part (FE) extracted with 95% ethanol expressed the highest antioxidant activity (DPPH radical scavenging IC50 of 0.817 ± 0.06 μl/mg dry weight (DW) and FRAP value of 11.40 ± 0.86 mmol Fe(II)/g DW) and the highest TPC (61.46 ± 3.09 mgGAE/g DW).While,the freeze-dried extract from dried powder (PE) exhibited the prominent antioxidant properties (DPPH radical scavenging IC50 of 0.975 ± 0.03 μl/mg DW and FRAP value of 07.60 ± 0.22 mmol Fe(II)/g DW),TPC (48.11 ± 1.45 mgGAE/g DW) when extracted with 50% *** phenolic compounds—two phenolic acids (gallic acid and tannic acid) and five flavonoids (apigenin,isoquercetin,quercetin,rutin,and catechin) were identified in FE and PE using HPLC-DAD/*** inflammatory genes were down-regulated in lipopolysaccharide-stimulated THP-1 monocytes treated with PE,suggesting anti-inflammatory *** accumulation in 3T3-L1 adipocytes treated with FE at 60 μ gGAE/mL decreased to 12.8%,while the decrease of 36.8% was detected in ***,flavonoids were suggested to be responsible for the stronger bioactivity of PE over ***,this work originally revealed the investigation of the anti-inflammatory and anti-adipogenic activity of white mugwort on THP-1 and 3T3-L1 cells.

关键词： White mugwort Artemisia lactiflora Phenolic compounds Anti-inflammatory Anti-adipogenesis

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Effect of Ho-doping on photocatalytic activity of nanosized TiO_2 catalyst

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Journal of Rare Earths 2008年第1期26卷 71-75页

作者：蔡河山刘国光吕文英黎晓霞余林李大光 Department of Resource and Environment Foshan University faculty of Environmental Science and Engineering faculty of Chemical Engineering and Light industry Guangdong University of Technology

Ho-doped TiO2 nanoparticles with higher photocatalytic activity were prepared by an acid-catalyzed sol-gel method. The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystallite sizes, crystal pattern, surface composition, and optical property of the catalysts were investigated by means of techniques such as X-Ray Diffraction （XRD）, Transmission Electron Microscopy （TEM）, Diffuse Reflectance UV-Vis Spectroscopy （UV-Vis DRS）, Fourier Transform Infrared （FT-IR）, and Photo-Luminiscence （PL） spectra. Moreover, the modification mechanism of Ho doping was also discussed. The results showed that Ho doping could inhibit phase transformation from anatase to rntile, suppress the growth of TiO2 grains, cause blue shift of the absorption spectrum edge, accelerate surface hydroxylation, and enhance the separation efficiency of photoinduced electron-hole pairs, which resulted in a significant improvement in the photoreactivity of Ho-doped TiO2. Among them, the Ho-doped TiO2 calcined at 500℃ achieved the highest photocatalytic activity.

关键词： titanium dioxide Ho-doping characterization photocatalysis methyl orange rare earths

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