Applied Ocean Research最新文献

{"title":"Spatial-temporal evolution and damage mechanism of pore-throat networks in unconsolidated sandstones during seawater reinjection based on in-situ CT","authors":"Huiyong Zeng ,&nbsp;Lifeng Chen ,&nbsp;Yongqing Bai ,&nbsp;Zhaonian Zhang ,&nbsp;Minghao Xue ,&nbsp;Lu Lai ,&nbsp;Tengfei Wang","doi":"10.1016/j.apor.2026.104982","DOIUrl":"10.1016/j.apor.2026.104982","url":null,"abstract":"<div><div>Seawater is widely used as an injection fluid in offshore subsurface systems because of its stable availability and low operational cost. However, direct pore-scale evidence of structural evolution and seepage degradation in unconsolidated sandstones during seawater reinjection remains limited under conditions representative of offshore operations. In this study, pore-scale structural evolution and seepage response of unconsolidated sandstone cores from the Bohai Sea were investigated using in-situ X-ray computed tomography, combined with three-dimensional pore network reconstruction and pore-scale flow simulation. The results show that seawater reinjection induces a staged and non-monotonic evolution of pore structure and permeability. During the early injection stage, clay swelling and fine-particle migration dominate pore–throat blockage, leading to pronounced loss of connectivity and rapid permeability decline. With continued injection, partial pore reopening occurs under hydrodynamic erosion, and porosity shows limited recovery. Nevertheless, permeability remains strongly constrained due to irreversible alteration of pore topology. Marked spatial heterogeneity is observed along the flow direction, with particle accumulation concentrated near the injection end and clay-related pore collapse more evident in downstream regions. Grey relational analysis indicates that pore topology exerts a stronger control on permeability evolution than clay content alone, highlighting the key role of connectivity degradation in sustained seepage impairment. These findings provide pore-scale insight into injectivity deterioration during offshore seawater injection and offer a microstructural basis for interpreting injection performance in offshore subsurface engineering.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104982"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geometric-spatial parameterization of storm sandbars in post-storm beach profile self-recovery: Modulated by tide-wave-sandbar interplay","authors":"Xi Feng ,&nbsp;Yuanshu Jiang ,&nbsp;Yingtao Zhou ,&nbsp;Yu Zhu ,&nbsp;Aifeng Tao ,&nbsp;Jinhai Zheng","doi":"10.1016/j.apor.2026.104973","DOIUrl":"10.1016/j.apor.2026.104973","url":null,"abstract":"<div><div>One of the most prominent modifications to beaches by storms is the formation of nearshore sandbars, which complicates processes in the surf and swash zones. However, the migration processes of these sandbars and their influence on the recovery of post-storm beaches remain unclear, especially under low-wave-energy conditions. This study, based on field campaign data, revealed that a storm-deposited sandbar formed after Typhoon Kompasu provided an essential sediment source for the eroded backshore, thereby boosting the self-recovery of the storm-altered profile. To further explore the hydrodynamic and morphological controls on the migration and dispersion of the storm-deposited sandbar, a state-of-the-art numerical model for coastal processes, XBeach, was employed. Simulation results are consistent with observational data, demonstrating that even in a micro-tidal regime, tides play a vital role in post-storm morphological evolution: by regulating wave asymmetry and wave breaking, tides prolong the duration of processes in the swash and surf zones. Specifically, rising tides facilitate sandbar overwash, while ebbing tides enhance sediment accretion on both the backshore and foreshore. In micro- to meso‑tidal environments, a berm can be more easily developed using sediment from storm-induced sandbars, whereas such berms rarely form in macro-tidal environments. Moreover, the initial configuration of sandbars controls the geometric features of equilibrium profiles in micro- to meso‑tidal environments, but this influence does not appear in macro-tidal settings. Notably, only when sandbars have a moderate width-to-height ratio (<em>γ</em>_sb≈20) and are positioned 0.1–0.3 times the incident wavelength from the dune toe can they effectively replenish the eroded backshore while preventing dune erosion. The findings of this study highlight the importance of incorporating tidal fluctuations into experimental setups and provide a scientific basis for formulating artificial intervention strategies for beach protection.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104973"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reconstruction of the underwater sound speed field of mesoscale eddies in typical sea areas based on the physically-constrained deep learning model","authors":"Yuyao Liu ,&nbsp;Jiru Wang ,&nbsp;Wei Chen,&nbsp;Yu Chen,&nbsp;Jing Zhu,&nbsp;Weixuan Zhang,&nbsp;Zhou Meng","doi":"10.1016/j.apor.2026.104988","DOIUrl":"10.1016/j.apor.2026.104988","url":null,"abstract":"<div><div>As a widespread dynamical phenomenon in the world’s oceans, mesoscale eddies significantly alter the temperature and salinity of water masses, leading to differences in the sound speed profile (SSP) within the eddies compared to the surrounding seawater. These differences in turn affect underwater acoustic detection. In this study, a Physically-Constrained Attention Residual Network (PC-ARN) has developed to reconstruct the sound speed field of eddies in Kuroshio Extension (KE) and Subtropical Counter Current (STCC) regions. The PC-ARN model integrates Convolutional Block Attention Module (CBAM) into the Residual Network (ResNet) and is trained using extensive remote sensing data, eddy parameter data, and Argo float observations. A multi-scale feature fusion mechanism preserves the specificity of remote sensing data, while the CBAM mechanism enhances eddy feature extraction. Furthermore, we introduce a novel physical constraint based on a normalized eddy representation, derived from spatiotemporally matched eddy parameters and Argo data via normalization analysis. Incorporating this constraint improves PC-ARN’s reconstruction performance, reducing the root mean square error (RMSE) of reconstructed Argo SSPs by an average of over 13 %. The core depth errors of reconstructed eddies are 5 m (1.7 %), 10 m (6.9 %), and 20 m (4.5 %), respectively. Acoustic field predictions demonstrate that the proposed reconstruction scheme can efficiently capture unique eddy-induced transmission loss patterns without relying on in situ underwater observations in eddy environments.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104988"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal numerical modeling of wave overtopping flow over dike crests and landward slopes","authors":"Niels van der Vegt ,&nbsp;Bas Hofland ,&nbsp;Vera M. van Bergeijk ,&nbsp;Suzanne J.M.H. Hulscher ,&nbsp;Jord J. Warmink","doi":"10.1016/j.apor.2026.104972","DOIUrl":"10.1016/j.apor.2026.104972","url":null,"abstract":"<div><div>Wave overtopping can cause severe erosion on the crest and landward slope of a dike. Accurate erosion prediction requires resolving the spatiotemporal evolution of overtopping flow, which remains insufficiently understood. This study investigates the behavior of overtopping flow along the crest and landward slope using a new, efficient numerical model based on the Steep-Slope Shallow Water Equations. The model was validated against measurements from field experiments using a wave overtopping simulator.</div><div>The model was applied to a typical dike geometry (<span><math><msub><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> = 5 m; <span><math><mrow><mo>tan</mo><mrow><mo>(</mo><mi>α</mi><mo>)</mo></mrow></mrow></math></span> = 1V:3H), where the overtopping flow is imposed at the waterside crest line based on a schematization using empirical equations from literature and insights from small-scale overtopping experiments. The spatiotemporal evolution of the flow was analyzed along the crest and landward slope for different overtopping volumes. The flow was observed to stretch in time along both the crest and slope while the wavefront steepens, causing the peak flow thickness (<span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>p</mi><mi>e</mi><mi>a</mi><mi>k</mi></mrow></msub></math></span>) to decrease significantly. The peak flow velocity (<span><math><msub><mrow><mi>u</mi></mrow><mrow><mi>p</mi><mi>e</mi><mi>a</mi><mi>k</mi></mrow></msub></math></span>) decreases along the crest but initially accelerates on the slope due to gravitational forcing. As the flow becomes progressively thinner and faster downslope, frictional forcing increases, reducing the acceleration. Eventually, gravitational and frictional forces balance, causing <span><math><msub><mrow><mi>u</mi></mrow><mrow><mi>p</mi><mi>e</mi><mi>a</mi><mi>k</mi></mrow></msub></math></span> to decelerate and then decrease.</div><div>Overall, the model captures key spatiotemporal dynamics such as flow stretching, wavefront steepening, and deceleration of <span><math><msub><mrow><mi>u</mi></mrow><mrow><mi>p</mi><mi>e</mi><mi>a</mi><mi>k</mi></mrow></msub></math></span> on long slopes, which are absent in time-independent analytical models. It offers a computationally efficient approach that provides a practical middle ground between simplified analytical methods and full CFD simulations.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104972"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Traction characteristics and failure mechanisms of deep-sea ultra-soft sediment under grouser shear","authors":"Yanli Chen ,&nbsp;Guocheng Zhao ,&nbsp;Yong Yang ,&nbsp;Longfei Xiao ,&nbsp;Lixin Xu","doi":"10.1016/j.apor.2026.104952","DOIUrl":"10.1016/j.apor.2026.104952","url":null,"abstract":"<div><div>Traction performance is a critical factor governing the robust operation of deep-sea tracked mining vehicles on ultra-soft sediments. However, classic terramechanics models, such as the Bekker and Wong formulas, systematically underestimate traction capabilities as they neglect the complex soil accumulation and geometric effects induced by curved grousers. To address this, an improved analytical model based on Coulomb's passive earth pressure theory was developed, incorporating a correction factor (<em>k</em>) to account for grouser curvature and soil accumulation. A biomimetic grouser inspired by buffalo hoof morphology was designed and experimentally tested to validate the model. Results demonstrate that optimizing the dimensionless straight segment length (<em>L</em>*) and curvature radius (<em>R</em>*) enhances traction by 3–6 % compared to traditional flat grousers. A response surface analysis identified the optimal configuration (<em>L</em> = 50 mm, <em>R</em> = 200 mm) and revealed that <em>L</em> plays a more dominant role than <em>R</em>. Crucially, comparative analyses confirm that the proposed model significantly outperforms the Bekker model, reducing the prediction error from 12.55 % (Bekker model) to just 0.75 %. These findings provide precise quantitative guidance for optimizing the maneuverability of next-generation deep-sea mining vehicles.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104952"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical and experimental investigation into field joint strain concentration in concrete-weight coated pipelines under bending","authors":"G.M. Harun-Or-Rashid ,&nbsp;Ahmed Reda ,&nbsp;Mohamed A. Shahin ,&nbsp;Ali Karrech","doi":"10.1016/j.apor.2026.104960","DOIUrl":"10.1016/j.apor.2026.104960","url":null,"abstract":"<div><div>Strain localisation at the field joint (FJ) for concrete-weight coated (CWC) pipelines subjected to bending during installation and operation remains a critical design concern. This study develops a high-fidelity finite element model (FEM), validated against newly available full-scale bending tests, to characterise the nonlinear mechanical behaviour of CWC pipelines. The model accurately reproduces the measured bending response, local strain behaviour, and displacement profile, and captures the progression of cracking, interfacial slip, and strain concentration factor (SNCF) observed during testing. The results show that tensile SNCF at the field joints governs the response and defines the onset of critical behaviour, with concrete crushing marking the serviceability limit. A direct comparison of the obtained results with DNV-RP-F105 reveals significant limitations in the existing stiffness-ratio formulation for predicting SNCF. To address this issue, a set of normalised master curves is established, providing an efficient and generalisable framework for assessing field-joint performance across a range of practical geometries. The influence of internal pressure on strain localisation is also quantified, demonstrating its beneficial role in reducing tensile SNCF. The overall outcomes provide valuable insights into the interaction between coating geometry, internal pressure, and localised strain behaviour, leading to safer and cost-effective offshore pipeline design practices.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104960"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Safe region prediction and constraint design for INS–polarization–acoustic hybrid navigation","authors":"X.J. Fan ,&nbsp;F. Kong ,&nbsp;Y.J. Guo","doi":"10.1016/j.apor.2026.104983","DOIUrl":"10.1016/j.apor.2026.104983","url":null,"abstract":"<div><div>Accurate and robust navigation in complex underwater environments requires the effective integration of heterogeneous sensors. Inertial navigation systems (INS) suffer from drift accumulation, polarization-based heading is sensitive to environmental disturbances, and acoustic positioning is limited by low update rates and measurement uncertainties. Despite recent progress in multi-sensor fusion, systematically modeling and handling uncertainties induced by dynamic sensor availability, environment-dependent degradation, and stochastic measurement errors remains challenging. This paper proposes a probabilistic hybrid navigation framework that tightly fuses INS, polarization, and acoustic information by modeling the system as a stochastic hybrid process with Markovian mode transitions. We further employ forward stochastic reachability to predict the future state distribution under switching sensor configurations and disturbances, from which probabilistic occupancy functions and dynamic confidence sets are derived. These safe regions are integrated as real-time probabilistic constraints in the fusion process to enable adaptive sensor weighting and enhance robustness under degraded or intermittent sensing. Extensive simulations under realistic uncertainty settings demonstrate improved positioning accuracy, reduced constraint violation rates, and better uncertainty bounding, indicating the potential of the proposed framework for long-duration autonomous underwater navigation.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104983"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution underwater mapping in low-visibility and confined environments using imaging sonar","authors":"Xiaoteng Zhou ,&nbsp;Yusheng Wang ,&nbsp;Katsunori Mizuno ,&nbsp;Kenichiro Tsutsumi ,&nbsp;Hideki Sugimoto","doi":"10.1016/j.apor.2026.104959","DOIUrl":"10.1016/j.apor.2026.104959","url":null,"abstract":"<div><div>The detailed characterization of low-visibility and confined underwater environments remains a critical challenge for autonomous exploration due to the limited spatial resolution of conventional sensing techniques. Previous mapping methods often depend on complex multi-sensor systems, which increase operational cost and reduce adaptability across diverse environments. This study proposes a novel high-resolution mapping approach using a single imaging sonar, which integrates acoustic mosaicking techniques with a shadow cue-based target height estimation model. This approach can be regarded as a 2.5-D mapping strategy: a planar mapping is first generated from 2-D sonar images, and the estimated target heights are then used to compensate for the missing elevation information to achieve a spatial representation. Unlike conventional 3-D reconstruction techniques, it emphasizes the rapid acquisition of spatial contours rather than the recovery of structural details. Experiments conducted in controlled pool environments demonstrate that the proposed method can reliably reconstruct spatial layouts and target dimensions, offering a robust and scalable solution for autonomous underwater perception. The approach advances low-altitude surveys in extreme environments, opening new pathways for efficient perception using marine robotic systems.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104959"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flow-induced buckling of a viscoelastic bistable structure in time varying flow","authors":"Leixin Ma,&nbsp;Varshitha Janavi,&nbsp;Muhammad Umer Khan Mughal,&nbsp;Uday Kumar Punna","doi":"10.1016/j.apor.2026.104977","DOIUrl":"10.1016/j.apor.2026.104977","url":null,"abstract":"<div><div>This study investigates the influence of linear viscoelasticity on the snap-through dynamics of bistable structures subjected to fluid flows with changing speed. The viscoelastic behavior is modeled using a Prony series, capturing the time-dependent relaxation modulus. Numerical simulations based on the Arbitrary Lagrangian–Eulerian framework are conducted to analyze the structural response under changing flow speeds. Key parameters, including relaxation times and Prony coefficients, are systematically evaluated to elucidate their roles in governing dynamic stability and energy transfer between the fluid and structure systems. Two critical dimensionless parameters are identified: a Cauchy number modified by viscoelastic stiffness and the Deborah number. The modified Cauchy number quantifies the interaction between fluid forces and effective structural stiffness, while the Deborah number captures the transition between viscous-dominated and elastic-dominated regimes. Structures with significant viscous effects exhibit delayed buckling and increased strain energy under faster inlet flow acceleration, indicating a stiffness amplification effect. These findings provide insight into the interplay between viscoelastic material response and flow conditions and inform the design of adaptive bistable structures for applications in soft robotics, morphing surfaces, and energy-harvesting technologies.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104977"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The contribution of sensitivity analysis and data assimilation to tidal-stream resource assessment: The example of the Alderney Race","authors":"Jérôme Thiébot ,&nbsp;Cédric Goeury ,&nbsp;Jean-Paul Travert ,&nbsp;Anju Sebastian ,&nbsp;Julien Salomon","doi":"10.1016/j.apor.2026.104970","DOIUrl":"10.1016/j.apor.2026.104970","url":null,"abstract":"<div><div>Highly accurate modeling of tidal current is crucial in the assessment of tidal-stream resource. We use a method for refining the predictions of a two-dimensional tidal model applied to estimate the resource of the Alderney Race (English Channel). The first phase consists in identifying the input parameters which have the greatest influence on the model’s performance. The sensitivity analysis relies on the Sobol’ indices. It is found that the adjustment of the phase of the <span><math><msub><mrow><mi>M</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> (lunar semidiurnal) constituent is the most efficient way to reduce model’s errors. Bottom friction and amplitudes of <span><math><msub><mrow><mi>M</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>S</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> (solar semidiurnal) are also influential on model performance. The second phase relies on data assimilation. The 3DVar algorithm is used to adjust the calibration parameters so that they reduce the errors between model predictions and depth-averaged current speed measured by ADCPs. The method, although common in other coastal engineering applications, is tested in the context of estimating tidal resource. It gives promising results as it reduces root mean square errors in current speed by 19%. This corresponds to a reduction of root mean square error in power density of 31% at the ADCP locations. By comparing maps of power density before and after the model calibration, we show that the adjustment of model parameters significantly modifies the resource assessment in the Alderney Race.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"168 ","pages":"Article 104970"},"PeriodicalIF":4.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}