期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到15,210篇文章
< 1 2 … 250 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
FTCSEM—A FORTRAN-based parallelized 1D CSEM forward and inversion program for arbitrary source-receiver geometry 认领 引用
1
作者 Wei-ying Chen Si-xu Han +2 位作者 Wan-ting Song Yu-lian Zhu Zheng Liu 《Applied Geophysics》 SCIE CSCD 2026年第2期693-709,870,共17页
This study introduces FTCSEM,a FORTRAN-based,parallelized one-dimensional controlledsource electromagnetic(CSEM)forward modeling and inversion software capable of accommodating arbitrary source-receiver confi guration... This study introduces FTCSEM,a FORTRAN-based,parallelized one-dimensional controlledsource electromagnetic(CSEM)forward modeling and inversion software capable of accommodating arbitrary source-receiver confi gurations.In comparison to existing one-dimensional CSEM tools,FTCSEM incorporates several signifi cant enhancements:it supports transmitters of diverse shapes,quantities,and spatial locations;permits receivers to be positioned flexibly on the surface,subsurface,or in the atmosphere;facilitates simulations and inversions in both frequency and time domains;integrates an adaptive regularized inversion algorithm with multiple model constraints;and leverages GPU-accelerated parallel computing to attain high computational efficiency.Validation through numerical experiments and field data inversion confirms the program’s accuracy and practical applicability.The findings indicate that FTCSEM performs robustly in complex geoelectric environments,multi-source and multi-receiver arrangements,as well as multi-component joint inversion scenarios,thereby offering a versatile and powerful tool for advancing CSEM research and applications. 展开更多
关键词 CSEM forward modeling regularized inversion parallel computing program
暂未订购 下载PDF
Achieving uniform microstructure and properties in large-sized seamless thin-walled cylindrical components with high-ribs using novel forward needle penetration extrusion process 认领 引用
2
作者 Hui LI Cong CHANG +2 位作者 Hong-bang SHAO Yuan-chun HUANG Jun-hua CHENG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第4期1055-1073,共19页
An innovative forward needle penetration extrusion die assembly was designed,which enabled precision manufacturing of large-sized seamless Al-Zn-Mg alloy thin-walled cylindrical components with high-ribs.Through syste... An innovative forward needle penetration extrusion die assembly was designed,which enabled precision manufacturing of large-sized seamless Al-Zn-Mg alloy thin-walled cylindrical components with high-ribs.Through systematic numerical simulation and experimental validation,optimal process parameters were established(billet temperature of 465℃,die temperature of 460℃,container temperature of 420℃,and extrusion speed of 1.5 mm/s),achieving exceptional material flow uniformity with a low standard deviation of the velocity field(SDV)of 0.478 at the bearing cross-section.The developed method produces seamless components exhibiting superior microstructural homogeneity compared to conventional porthole extrusion.Coarse secondary-phase particles are significantly fragmented after extrusion deformation,and grains are flattened into fibrous shapes,with the predominant recrystallization mechanisms being geometric dynamic recrystallization(GDRX)and discontinuous dynamic recrystallization(DDRX).Mechanical property variations across different regions are controlled within 7%,with the rib head region showing the highest tensile strength and yield strength,reaching 360 MPa and 215 MPa,respectively.Additionally,all regions exhibit elongation values exceeding 22%,indicating consistent ductility throughout the structure. 展开更多
关键词 thin-walled cylindrical components forward needle penetration extrusion numerical simulation microstructure evolution mechanical properties
暂未订购 下载PDF
Dynamic reconstruction of the source-to-sink system of the Paleogene Enping Formation in the Baiyun Sag,Pearl River Mouth Basin,China:Insights from stratigraphic forward modeling 认领 引用
3
作者 GAO Jianlei LIU Keyu 《Petroleum Exploration and Development》 SCIE 2026年第1期152-166,共15页
Traditional source-to-sink analyses cannot effectively characterize deep-time sedimentary processes involving multiple sediment sources and the spatiotemporal evolution of sediment contributions from different sources... Traditional source-to-sink analyses cannot effectively characterize deep-time sedimentary processes involving multiple sediment sources and the spatiotemporal evolution of sediment contributions from different sources.In this study,a dynamic,quantitative source-to-sink analysis approach using stratigraphic forward modeling(SFM)is proposed,and it is applied to the Paleogene Enping Formation in the Baiyun Sag,Pearl River Mouth Basin.The built-in spatiotemporal provenance tagging of the model assigns a unique time-source label to sediments from each provenance,making each source's contribution identifiably“labeled”in the simulated formation,and thus enabling a direct precise tracking and high spatiotemporal resolution quantification of such contributions.Five pseudo-wells(from proximal to distal locations)in the Baiyun Sag were analyzed.The simulation results quantitatively represent the varied proportion of contribution of each source at different locations and in different periods and verify the proposed approach's operability and accuracy of the proposed approach.The simulated 3D deposit distribution shows a high agreement with the measured stratigraphic data,validating the model's reliability.Results reveal significant spatiotemporal changes in the Enping sedimentary system.In the late stage of Enping Formation deposition,a distal source supply from the northern part of the sag became dominant,the depocenter migrated northward to the deepwater area,and large-scale deltaic sand bodies extensively progradating into the sag were formed.The modeled 3D deposit distribution indicates that extensive high-quality reservoir sandstones are likely present across the deepwater area of the Baiyun Sag,which are identified as key exploration targets.Compared to traditional static approaches,the SFM-based dynamic simulation markedly enhances the spatiotemporal resolution of source-to-sink analysis and quantitatively captures the sedimentary system's responses to tectonic activity,base-level fluctuations and other external drivers.The proposed approach provides a novel quantitative framework for investigating complex,deep-time,multi-source systems,and offers an effective tool for reservoir prediction and hydrocarbon exploration planning in underexplored deepwater areas. 展开更多
关键词 source-to-sink system stratigraphic forward modeling reservoir prediction deepwater hydrocarbon exploration Baiyun Sag Pearl River Mouth Basin Paleogene Enping Formation
暂未订购 下载PDF
Sensitivity of glacial isostatic adjustment observations on 3D Earths with lateral viscosity variations:A perspective from the Forward problem 认领 引用
4
作者 Patrick Wu 《Geodesy and Geodynamics》 EI CSCD 2026年第1期1-11,共11页
Sensitivity of observational data is important in the study of Glacial Isostatic Adjustment(GIA).However,depending on whether sensitivity is used for the Inverse Problem or the Forward Problem,the final formulation an... Sensitivity of observational data is important in the study of Glacial Isostatic Adjustment(GIA).However,depending on whether sensitivity is used for the Inverse Problem or the Forward Problem,the final formulation and display of the sensitivity kernel will be different.Unfortunately,in the past,both perspectives give the same name to their quantity computed/displayed,and that has caused some confusion.To distinguish between the two,their perspective should be added to the names.This paper focuses only on the perspective of the Forward Problem where the input parameters are known.The Perturbation method has been successfully used in the computation of the sensitivity kernels of observations on 1D and 3D viscosity variations from the Forward perspective.One aim of this paper is to review and clarify the physics of the Perturbation method and bring out some important aspects of this method that have been misunderstood or neglected.Another aim is to present sensitivity kernels from the Perturbation method using 3D(both radially and laterally heterogeneous)Earth models with realistic ice history.These new results are now suitable for future comparison with those from new methods using the Forward perspective.Finally,the sensitivity computations for realistic ice histories on a 3D Earth is reviewed and used to search for optimal locations of new GIA observations. 展开更多
关键词 Mantle rheology Loading of the Earth Forward problem
暂未订购 下载PDF
Generalized likelihood ratio detector for forward scattering detection in uncertain shallow-water environments 认领 引用
5
作者 Jiahui Luo Chao Sun +1 位作者 Mingyang Li Shaodong Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期490-503,共14页
Forward scattering detection in shallow-water environments presents many challenges,particularly the issues of environmental uncertainties and direct blast,which is an intense sound wave that propagates directly from ... Forward scattering detection in shallow-water environments presents many challenges,particularly the issues of environmental uncertainties and direct blast,which is an intense sound wave that propagates directly from the source to the receiver without interaction with the target.In this paper,we account for environmental uncertainties and extend the generalized likelihood ratio detector(GLRD)for forward scattering detection in a known environment to uncertain environments.In a suitable bistatic sonar configuration where the source is positioned on the broadside of a large aperture horizontal linear array(HLA),the GLRD exhibits good resistance to direct blast.Moreover,the GLRD demonstrates a certain degree of robustness against environmental uncertainties,particularly when the sampling uncertainty sets of the direct blast/signal wavefront are large enough—including both the real direct blast wavefront and the real signal wavefront.Despite facing the challenge of direct blast in forward scattering detection,the GLRD still performs well in this scenario and demonstrates its effectiveness as a method for forward scattering detection in uncertain shallow-water environments. 展开更多
关键词 forward scattering detection uncertain environments generalized likelihood ratio detector (GLRD) horizontal linear array (HLA)
暂未订购 下载PDF
HANDS ACROSS THE SEA“Forward Together”Dialogue on Building Brunei-China Community with a Shared Future held in Brunei 认领 引用
6
作者 Zhu Mengxiao 《China Report ASEAN》 2026年第3期50-51,共2页
The“Forward Together”Dialogue on Building a China-Brunei Community with a Shared Future was held on the morning of February 7 at Universiti Brunei Darussalam(UBD)in Bandar Seri Begawan.Scheduled for the lead-up to t... The“Forward Together”Dialogue on Building a China-Brunei Community with a Shared Future was held on the morning of February 7 at Universiti Brunei Darussalam(UBD)in Bandar Seri Begawan.Scheduled for the lead-up to the 35th anniversary of diplomatic relations between China and Brunei in 2026,the event aimed to deepen strategic mutual trust,build broader consensus on cooperation,and generate both intellectual momentum and practical proposals for advancing a closer China-Brunei community with a shared future. 展开更多
关键词 shared future forward together cooperation dialogue universiti brunei darussalam ubd momentum practical proposals strategic mutual trust deepen strategic mutual trustbuild
暂未订购 下载PDF
CGA-Based Approach to Forward Kinematics of Parallel Mechanisms with the 3-RE Structure 认领 引用 被引量：2
7
作者 Duanling Li Yuankai Zhang +4 位作者 Ying Zhang Zhonghai Zhang Longjie Fan Xiao Su Shuaimin Gao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2025年第3期365-376,共12页
To investigate the forward kinematics problem of parallel mechanisms with complex limbs and to expand the applicability of the powerful tool of Conformal Geometric Algebra(CGA),a CGA-based modeling and solution method... To investigate the forward kinematics problem of parallel mechanisms with complex limbs and to expand the applicability of the powerful tool of Conformal Geometric Algebra(CGA),a CGA-based modeling and solution method for a class of parallel platforms with 3-RE structure after locking the actuated joints is proposed in this paper.Given that the angle between specific joint axes of limbs remains constant,a set of geometric constraints for the forward kinematics of parallel mechanisms(PM)are determined.After translating unit direction vectors of these joint axes to the common starting point,the geometric constraints of the angle between the vectors are transformed into the distances between the endpoints of the vectors,making them easier to handle.Under the framework of CGA,the positions of key points that determine the position and orientation of the moving platform can be intuitively determined by the intersection,division,and duality of basic geometric entities.By employing the tangent half-angle substitution,the forward kinematic analysis of the parallel mechanisms leads to a high-order univariate polynomial equation without the need for any complex algebraic elimination operations.After solving this equation and back substitution,the position and pose of the MP can be obtained indirectly.A numerical case is utilized to confirm the effectiveness of the proposed method. 展开更多
关键词 Conformal geometric algebra Parallel mechanisms Forward kinematics Elimination-free Coordinate-
暂未订购 下载PDF
Characterization of shade tolerance gene network in soybean revealed by forward integrated reverse genetic studies 认领 引用 被引量：1
8
作者 Yanzhu Su Yongpeng Pan +13 位作者 Weiying Zeng Zhenguang Lai Pengfei Guo Xiaoshuai Hao Shengyu Gu Zhipeng Zhang Lei Sun Ning Li Jianbo He Wubin Wang Guangnan Xing Jiaoping Zhang Zudong Sun Junyi Gai 《Horticulture Research》 SCIE CSCD 2025年第3期145-158,共14页
Shade tolerance is a key trait for cultivars in interelay-cropped soybeans in maize fields.Our previous genome-wide association study(GWAS)results on southern China soybean germplasm revealed that the shade tolerance ... Shade tolerance is a key trait for cultivars in interelay-cropped soybeans in maize fields.Our previous genome-wide association study(GWAS)results on southern China soybean germplasm revealed that the shade tolerance was conferred by a complex of genes with multiple alleles.To complete our understanding of the shade tolerance gene system,GWAS with gene-allele sequences as markers(designated GASM-RTM-GWAS)was conducted in a recombinant inbred line(RIL)population between two extreme parents using the shade tolerance index(STI)and relative pith cell length(RCL)as indicators.Altogether,211 genes,comprising 99 and 119 genes(seven shared)for STI and RCL,respectively,were identified and then annotated into a similar set of five biological categories.Furthermore,transcriptome analysis detected 7837 differentially expressed genes(DEGs),indicating plentiful DEGs involved in the expression of regulatory/causal GWAS genes.Protein-protein interaction(PPI)analysis and gene functional analysis for both GWAS genes and DEGs showed a group of interrelated causal genes and a group of interrelated DEGs;the former were included in the latter and their functions were interconnected as a gene network.For further understanding of the response of soybean to shade stress in a sequential connection,six chronological gene modules were grouped as signal activation and transport,signal-transduction,signal amplification,gene expression,regulated metabolites,and material transport.From the modules,12 key genes were selected as entry points for further analysis.Our study provides an overview of the shade tolerance gene network as a new insight into a complex-trait genetic system,rather than the usual way of starting from a hand-picked single gene. 展开更多
关键词 recombinant inbred transcriptome analysis gene network shade tolerance forward integrated reverse genetic studies genome wide association study recombinant inbred line soybean
暂未订购 下载PDF
Modification of texture in AZ31 magnesium alloy via cold pre-upsetting alternating forward extrusion 认领 引用
9
作者 Shun Luo Feng Li +2 位作者 Yuan Qi Li Hai Bo Wang Jia Yang Zhang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2025年第12期6183-6194,共12页
Prefabricated twinning represents an effective strategy for optimizing the microstructure of extruded forming components and facilitating changes in texture.The study examines the incorporation of[10-12]twins into an ... Prefabricated twinning represents an effective strategy for optimizing the microstructure of extruded forming components and facilitating changes in texture.The study examines the incorporation of[10-12]twins into an AZ31 magnesium alloy billet via cold pre-upsetting deformation before alternating forward extrusion(CUAFE).The experimental results indicate that the initial presence of[10-12]twins is advantageous for the development of[10-10]and[11-20]texture components during the extrusion process.In addition,different DRX mechanisms have different influences on the evolution of basal texture.The CDRX grains tend to preferentially select the[11-20]texture orientation,weakening the[10-10]texture and enhancing the[11-20]texture.However,most DDRX grains deviate significantly from the orientation of their surrounding original grain and do not have a preferred orientation.This is reflected in the mechanical properties of the CUAFE part.The tensile strength is 323.5 MPa,while the elongation is as high as 20.1%. 展开更多
关键词 Alternating forward extrusion Pre-upsetting Twinning Recrystallization Texture
暂未订购 下载PDF
Conformal Geometric Algebra-based Forward Kinematics Analysis Method for the(2-SPR+RPS)+(3-SPR)Serial-Parallel Hybrid Mechanism 认领 引用
10
作者 Zhonghai Zhang Dongyang Zhu Duanling Li 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2025年第4期535-550,共16页
Parallel mechanisms with fewer degrees of freedom that incorporate two or more SPR limbs have been widely adopted in industrial applications in recent years.However,notable theoretical gaps persist,particularly in the... Parallel mechanisms with fewer degrees of freedom that incorporate two or more SPR limbs have been widely adopted in industrial applications in recent years.However,notable theoretical gaps persist,particularly in the field of analytical solutions for forward kinematics.To address this,this paper proposes an innovative forward kinematics analysis method based on Conformal Geometric Algebra(CGA)for complex hybrid mechanisms formed by serial concatenation of such parallel mechanisms.The method efficiently represents geometric elements and their operational relationships by defining appropriate unknown parameters.It constructs fundamental geometric objects such as spheres and planes,derives vertex expressions through intersection and dual operations,and establishes univariate high-order equations via inner product operations,ultimately obtaining complete analytical solutions for the forward kinematics of hybrid mechanisms.Using the(2-SPR+RPS)+(3-SPR)serial-parallel hybrid mechanism as a validation case,three configuration tests implemented in Mathematica demonstrate that:for each configuration,the upper 3-SPR mechanism yields 15 mathematical solutions,while the lower 2-SPR+RPS mechanism yields 4 mathematical solutions.After geometric constraint filtering,a unique physically valid solution is obtained for each mechanism.SolidWorks simulations further verify the correctness and reliability of the model.This research provides a reliable analytical method for forward kinematics of hybrid mechanisms,holding significant implications for advancing their applications in high-precision scenarios. 展开更多
关键词 Conformal geometric algebra Serial-parallel hybrid mechanism SPR limbs Forward kinematics analysis Superposition principle
暂未订购 下载PDF
Deep reinforcement learning-based forwarding node selection algorithm in Internet of vehicles 认领 引用
11
作者 Huibin Xu Long Fang 《Digital Communications and Networks》 SCIE EI CSCD 2025年第6期1983-1993,共11页
Due to open communication environment,Internet of Vehicles(IoV)are vulnerable to many attacks,including the gray hole attack,which can disrupt the process of transmitting messages.And this results in the degradation o... Due to open communication environment,Internet of Vehicles(IoV)are vulnerable to many attacks,including the gray hole attack,which can disrupt the process of transmitting messages.And this results in the degradation of routing performance.To address this issue,a double deep Q-networks-based stable routing for resisting gray hole attack(DOSR)is proposed in this paper.The aim of the DOSR algorithm is to maximize the message delivery ratio as well as to minimize the transmission delay.For this,the distance ratio,message loss ratio,and connection ratio are taken into consideration when choosing a relay node.Then,to choose the relay node is formulated as an optimization problem,and a double deep Q-networks are utilized to solve the optimization problem.Experimental results show that DOSR outperforms QLTR and TLRP by significant margins:in scenarios with 400 vehicles and 10%malicious nodes,the message delivery ratio(MDR)of DOSR is 8.3%higher than that of QLTR and 5.1%higher than that of TLRP;the average transmission delay(ATD)is reduced by 23.3%compared to QLTR and 17.9%compared to TLRP.Additionally,sensitivity analysis of hyperparameters confirms the convergence and stability of DOSR,demonstrating its robustness in dynamic IoV environments. 展开更多
关键词 Internet of vehicles Stable routing Deep reinforcement learning Forwarding candidate set
暂未订购 下载PDF
Self-sustaining alkaline seawater electrolysis via forward osmosis membranes 认领 引用 被引量：2
12
作者 Ke Shi Hongyi Wan +6 位作者 Keyu Wang Fumohan Fang Shiyi Li Yixing Wang Linfeng Lei Linzhou Zhuang Zhi Xu 《Green Energy & Environment》 SCIE EI CAS CSCD 2025年第3期518-527,共10页
Seawater electrolysis for hydrogen production faces inherent challenges, including side reactions, corrosion, and scaling, stemming from the intricate composition of seawater. In response, researchers have turned to c... Seawater electrolysis for hydrogen production faces inherent challenges, including side reactions, corrosion, and scaling, stemming from the intricate composition of seawater. In response, researchers have turned to continuous water splitting using forward osmosis(FO)-driven seawater desalination. However, the necessity of a neutral electrolyte hampers this strategy due to the limited current density and scarcity of precious metals. Herein, this study applies alkali-durable FO membranes to enable self-sustaining seawater splitting, which can selectively withdraw water molecules, from seawater, via concentration gradient. The membranes demonstrates outstanding perm-selectivity of water/ions(~5830 mol mol-1) during month-long alkaline resistance tests, preventing electrolyte leaching(>97% OHàretention) while maintaining ~95%water balance(VFO= Velectrolysis) via preserved concentration gradient for consistent forward-osmosis influx of water molecules. With the consistent electrolyte environment protected by the polyamide FO membranes, the Ni Fe-Ar-P catalyst exhibits promising performance: a sustain current density of 360 m A cmà2maintained at the cell voltage of 2.10 V and 2.15 V for 360 h in the offshore seawater, preventing Cl/Br corrosion(98% rejection) and Mg/Ca passivation(99.6% rejection). This research marks a significant advancement towards efficient and durable seawater-based hydrogen production. 展开更多
关键词 Alkaline water electrolysis Forward osmosis Self-sustaining seawater splitting Hydrogen evolution Real seawater
暂未订购 下载PDF
Stratigraphic Forward Modeling of Late Quaternary Fluvial Dynamics in the Indus River Delta, Pakistan: Insights into Sea Level-Driven Sedimentary Evolution 认领 引用 被引量：1
13
作者 HASSAN Hafiz Ahmed Raza LIU Keyu +3 位作者 LIU Jianliang MUNAWAR Muhammad Jawad REHMAN Saif Ur HUSSAIN Abid 《Journal of Ocean University of China》 SCIE CAS CSCD 2025年第6期1500-1518,共19页
Fluvial systems play a crucial role in coastal and riverine ecosystems, making it essential to understand their responses to sea level changes for preserving biodiversity and managing natural resources. The evolution ... Fluvial systems play a crucial role in coastal and riverine ecosystems, making it essential to understand their responses to sea level changes for preserving biodiversity and managing natural resources. The evolution of the modern Indus River Delta offers a rare opportunity to study the interplay between sea level fluctuations, tectonism, sediment supply, and the corresponding fluvial responses. This study employs the ‘SedSim' stratigraphic forward model to simulate the delta's evolution from 200 kyr to the next5 kyr, drawing on data from field observations, Landsat imagery, digital elevation models, and previous studies. The model consists of 205 layers, each representing a 1-kyr time step, covering the last two glacial-interglacial cycles. Between 200 kyr and 130 kyr, during a lowstand period, sedimentation on the delta plain continued due to partial flow from the Indus River. During the last interglacial(130–60 kyr), rising sea levels led to peak sediment deposition, characteristic of a highstand phase. From 60 kyr to 18 kyr, sea levels dropped to their lowest during the Last Glacial Maximum(LGM), resulting in extensive erosion and minimal deposition on the delta plain. From 18 kyr to the present, rapidly rising sea levels, coupled with intensified monsoon activity, increased sedimentation rates and triggered avulsion and aggradation processes. The model accurately predicted depositional thickness across the delta plain, indicating a maximum of ca. 200 m at the shoreline platform, ca. 175 m in the northeastern delta, and ca. 100 m in the central delta. The study underscores the delta's vulnerability to future sea level rise, which–at a projected rate of 1 m/kyr–could significantly influence the densely populated, low-lying delta plain. These findings offer valuable insights into the geomorphic evolution of the Indus Delta and emphasize the socioeconomic implications of sea level change, underscoring the importance of proactive management and adaptation strategies. 展开更多
关键词 fluvial responses sea level changes glacial-interglacial cycle sedimentary evolution stratigraphic forward modeling Indus Delta
暂未订购 下载PDF
Temperature and acoustic impedance simultaneous sensor based on forward stimulated Brillouin scattering in highly nonlinear fiber 认领 引用 被引量：1
14
作者 Shilong Liu Yang Li +2 位作者 Hongbin Hu Bing Sun Zuxing Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2025年第7期394-400,共7页
A temperature and acoustic impedance simultaneous sensor based on forward stimulated Brillouin scattering(FSBS)in highly nonlinear fiber(HNLF)with high sensitivity and high accuracy is proposed and demonstrated in thi... A temperature and acoustic impedance simultaneous sensor based on forward stimulated Brillouin scattering(FSBS)in highly nonlinear fiber(HNLF)with high sensitivity and high accuracy is proposed and demonstrated in this paper.High-order acoustic modes(HOAMs)are used to achieve individual or simultaneous measurement of the two parameters.Transverse acoustic waves(TAWs)involved in the FSBS process can efficiently sense the mechanical or environmental changes outside the fiber cladding,which will be reflected in a linear shift of the acoustic resonance frequency.By analyzing the frequencies of specific scattering peaks,the temperature and acoustic impedance outside the fiber cladding can be obtained simultaneously.The highest measured temperature and acoustic impedance sensitivities are 184.93 k Hz/℃and444.56 k Hz/MRayl,and the measurement accuracies are 0.09℃and 0.009 MRayl,respectively,which are both at desirable levels.We believe this work can provide potential application solutions for sensing fields involving temperature or acoustic impedance measurements. 展开更多
关键词 forward stimulated Brillouin scattering(FSBS) fiber optic sensor temperature sensor acoustic impedance sensor simultaneous measurement
暂未订购 下载PDF
Design of a parallel configurable forward feedback equalization dual-mode high-speed SerDes transmitter 认领 引用
15
作者 REN Yifan ZHANG Chunming SONG Yidi 《High Technology Letters》 EI CAS 2025年第4期407-414,共8页
Four-level pulse amplitude modulation(PAM4)signals,recognized for enhanced energy efficiency and spectral utilization compared with non-return-to-zero(NRZ)counterparts,have been adopted in multiple high-speed serializ... Four-level pulse amplitude modulation(PAM4)signals,recognized for enhanced energy efficiency and spectral utilization compared with non-return-to-zero(NRZ)counterparts,have been adopted in multiple high-speed serializer/deserializer(SerDes)standards,but NRZ modulation remains predominant in industrial applications.This paper introduces a UMC 28 nm CMOS-based parallel configurable forward feedback equalization(FFE)dual-mode high-speed SerDes transmitter supporting 7-bit resolution with data rates of 56 Gb∙s-1NRZ and 112 Gb∙s-1PAM4,utilizing a hybrid architecture that integrates digital signal processing(DSP)with digital-to-analog conversion(DAC).The design processes parallel input signals and eight stored 8-bit tap coefficients through a configurable FFE multiplier module and parallel carry adder module,while achieving low-power serialization via low-speed 16∶4 multiplexers(MUXs)with two different 2∶1 MUXs and high-speed 4∶1 MUXs.A source series termination(SST)output network structure enhances lower power dissipation and higher output swing.Simulation results show that,under a 1.05 V supply voltage and a channel loss of 19.21 dB at 28 GHz,the output 56 Gb∙s-1NRZ eye diagram has an eye height of 70.11 mV and an eye width of 12.16 ps(0.68 UI).The output 112 Gb∙s-1PAM4 eye diagram has an eye height of 20.07 mV and an eye width of 7.49 ps(0.42 UI).The layout area of the dual-mode transmitter is 0.079 mm2,and the total circuit power consumption is 74.48 mW(energy efficiency is 1.33/0.67 pJ∙bit-1). 展开更多
关键词 digital signal processing digital-to-analog conversion parallel configurable forward feedback equalization dual-mode transmitter source series termination driver 4∶1 multiplexers
暂未订购 下载PDF
Ecological Actions to Carry Forward the Shared Values of Mankind 认领 引用
16
《International Understanding》 2025年第2期26-27,共2页
On the morning of May 31st,the parallel forum"Ecological Actions to Carry Forward the Shared Values of Mankind,"as part of the 4th Dialogue on Exchanges and Mutual Learning among Civilisations,was held in Du... On the morning of May 31st,the parallel forum"Ecological Actions to Carry Forward the Shared Values of Mankind,"as part of the 4th Dialogue on Exchanges and Mutual Learning among Civilisations,was held in Dunhuang.More than 50 experts and scholars from different countries,including China,Kenya and Japan,engaged in indepth discussions on the theme. 展开更多
关键词 ecological actions shared values dialogue exchanges civilisations exchanges mutual learning scholars parallel forumecological actions carry forward shared values
暂未订购 下载PDF
Speech at the Roundtable on Carrying Forward the Bandung Spirit 认领 引用
17
作者 Khrushid Mahmud Kasuri 《Foreign Affairs Journal》 2025年第1期10-15,共6页
I am very happy to be part of the"Roundtable on Carrying Forward the Bandung Spirit".It takes me down to the memory lane when I was just a college student,I remember the first PM of the People's Republic... I am very happy to be part of the"Roundtable on Carrying Forward the Bandung Spirit".It takes me down to the memory lane when I was just a college student,I remember the first PM of the People's Republic of China Chou En-Lai and first President of the Republic of Indonesia,Ahmed Sukarno,as great friends of Pakistan.Both paid historic visits to Pakistan,where they received overwhelming public enthusiasm. 展开更多
关键词 Pakistan Bandung Spirit Diplomatic Relations Historical Visits Public Enthusiasm China carrying forward bandung Indonesia
暂未订购 下载PDF
Speech at the Roundtable on Carrying Forward the Bandung Spirit 认领 引用
18
作者 U Thant Kyaw 《Foreign Affairs Journal》 2025年第1期16-20,共5页
Today,we gather under the theme of"The Global South:Carrying Forward the Bandung Spirit and Marching together toward Modernization",which is a concept that impacts the complex global obstacles we face nowadays.
关键词 Bandung spirit global south forward bandung spirit global obstacles complex global obstacles modernization
暂未订购 下载PDF
Forward and Backward Slip Models in MAS Rolling Process and Its On-Line Application 认领 引用 被引量：7
19
作者 HU Xian-lei JIAO Zhi-jie HE Chun-yu LIU Xiang-hua WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE CAS 2007年第4期15-19,共5页
Based on the MAS rolling process in plate mill, the mathematical models of forward and backward slips of the wedges at plate head and tail were derived. According to the new model, the difference between the forward s... Based on the MAS rolling process in plate mill, the mathematical models of forward and backward slips of the wedges at plate head and tail were derived. According to the new model, the difference between the forward slip of the wedge and that of the normal part of the plate is obviously very small. The deviation is less than 2.5 % in general. Thus, in actual application, the forward slip of normal part of the plate can be used to calculate the length of rolled plate instead of the derived model. The rationality of this simplified method was confirmed with the application in Shougang 3 500 mm plate mill. The test results showed that the wedges of plate head and tail are symmetrical. The plate width deviation is greatly decreased by using the MAS method. 展开更多
关键词 MAS plate forward slip backforward slip wedge
暂未订购 下载PDF
Operational efficiencies and costs of an arm roll forwarder: A case study at Nasu in Tochigi Prefecture, Japan 认领 引用 被引量：1
20
作者 Kazuhiro Aruga Yuto Otsuka +3 位作者 Chikara Nakahata Reiko Yamaguchi Masashi Saito Mayu Nagasaki 《Journal of Forestry Research》 SCIE CAS CSCD 2013年第3期577-583,共7页
We investigated a developed arm roll forwarder at Nasu in Tochigi Prefecture, Japan. An arm roll forwarder can only load a steel container that has been fully loaded with logs beforehand, and can later unload such a c... We investigated a developed arm roll forwarder at Nasu in Tochigi Prefecture, Japan. An arm roll forwarder can only load a steel container that has been fully loaded with logs beforehand, and can later unload such a container. Such a forwarder can shorten the loading and untoading times and improve operational efficiency. We examined two operation systems with an arm roll forwarder and a forwarder. In the first system the loading was done with a grapple-loader. In the second system the loading was done with a processor. The loading times of an arm roll forwarder were significantly tess than those of a forwarder. Because the optimal cycle times （excluding the waiting times for an arm roll for- warder） were significantly reduced, the costs of using an arm roll for- warder are lower, although the loading capacity was small and the hourly operation cost was high. The maximum operational efficiencies varied depending on forwarding distances. The second operation system with an arm roll forwarder exhibited the best operational efficiency within a 1,580-m forwarding distance, and beyond that distance it exhibited the highest operational efficiency when a forwarder was used. Similarly, the cost of operation of the system with an arm roll forwarder was the lowest within a 1,130-m forwarding distance, and beyond that distance the cost was the lowest when using the forwarder. Therefore, the arm roll for- warder is effective within a certain forwarding distance. 展开更多
关键词 arm roll forwarder steel container operational efficiency cost forwarding distance
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 250 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈