Journal of Ocean Engineering and Science最新文献_第9页

Traveling wave structures of some fourth-order nonlinear partial differential equations 一类四阶非线性偏微分方程的行波结构

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2021.12.006

Handenur Esen , Neslihan Ozdemir , Aydin Secer , Mustafa Bayram

引用次数: 7

Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth 11000m深球形中空陶瓷耐压壳水下内爆的数值模拟与分析

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2022.01.002

Shengxia Sun, Fenghua Chen, Min Zhao

{"title":"Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth","authors":"Shengxia Sun, Fenghua Chen, Min Zhao","doi":"10.1016/j.joes.2022.01.002","DOIUrl":"https://doi.org/10.1016/j.joes.2022.01.002","url":null,"abstract":"<div><p>Pressure hulls play an important role in deep-sea underwater vehicles. However, in the ultra-high pressure environment, a highly destructive phenomenon could occur to them which is called implosion. To study the characteristics of the flow field of the underwater implosion of hollow ceramic pressure hulls, the compressible multiphase flow theory, direct numerical simulation, and adaptive mesh refinement are used to numerically simulate the underwater implosion of a single ceramic pressure hull and multiple linearly arranged ceramic pressure hulls. Firstly, the feasibility of the numerical simulation method is verified. Then, the results of the flow field of the underwater implosion of hollow ceramic pressure hulls in 11000 m depth is analyzed. There are the compression-rebound processes of the internal air cavity in the implosion. In the rebound stage, a shock wave that is several times the ambient pressure is generated outside the pressure hull, and the propagation speed is close to the speed of sound. The pressure peak of the shock wave has a negative exponential power function relationship with the distance to the center of the sphere. Finally, it is found that the obvious superimposed effect between spheres exists in the chain-reaction implosion which enhances the implosion shock wave.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 181-195"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Breather waves, analytical solutions and conservation laws using Lie–Bäcklund symmetries to the (2+1)-dimensional Chaffee–Infante equation 利用Lie-Bcklund对称性求解（2+1）维Chaffee-Infante方程的呼吸波、解析解和守恒定律

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2021.12.008

Abdullahi Yusuf , Tukur Abdulkadir Sulaiman , Alrazi Abdeljabbar , Marwan Alquran

{"title":"Breather waves, analytical solutions and conservation laws using Lie–Bäcklund symmetries to the (2+1)-dimensional Chaffee–Infante equation","authors":"Abdullahi Yusuf , Tukur Abdulkadir Sulaiman , Alrazi Abdeljabbar , Marwan Alquran","doi":"10.1016/j.joes.2021.12.008","DOIUrl":"10.1016/j.joes.2021.12.008","url":null,"abstract":"<div><p>The (<span><math><mrow><mn>2</mn><mo>+</mo><mn>1</mn></mrow></math></span>)-dimensional Chaffee–Infante has a wide range of applications in science and engineering, including nonlinear fiber optics, electromagnetic field waves, signal processing through optical fibers, plasma physics, coastal engineering, fluid dynamics and is particularly useful for modeling ion-acoustic waves in plasma and sound waves. In this paper, this equation is investigated and analyzed using two effective schemes. The well-known tanh-coth and sine-cosine function schemes are employed to establish analytical solutions for the equation under consideration. The breather wave solutions are derived using the Cole–Hopf transformation. In addition, by means of new conservation theorem, we construct conservation laws (CLs) for the governing equation by means of Lie–Bäcklund symmetries. The novel characteristics for the (<span><math><mrow><mn>2</mn><mo>+</mo><mn>1</mn></mrow></math></span>)-dimensional Chaffee–Infante equation obtained in this work can be of great importance in nonlinear sciences and ocean engineering.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 145-151"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43487272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Constructing analytical estimates of the fuzzy fractional-order Boussinesq model and their application in oceanography 模糊分数阶Boussinesq模型的分析估计及其在海洋学中的应用

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2022.01.003

Saima Rashid , Mohammed K.A. Kaabar , Ali Althobaiti , M.S. Alqurashi

{"title":"Constructing analytical estimates of the fuzzy fractional-order Boussinesq model and their application in oceanography","authors":"Saima Rashid , Mohammed K.A. Kaabar , Ali Althobaiti , M.S. Alqurashi","doi":"10.1016/j.joes.2022.01.003","DOIUrl":"10.1016/j.joes.2022.01.003","url":null,"abstract":"<div><p>The main idea of this article is the investigation of atmospheric internal waves, often known as gravity waves. This arises within the ocean rather than at the interface. A shallow fluid assumption is illustrated by a series of nonlinear partial differential equations in the framework. Because the waves are scattered over a wide geographical region, this system can precisely replicate atmospheric internal waves. In this research, the numerical solutions to the fuzzy fourth-order time-fractional Boussinesq equation (BSe) are determined for the case of the aquifer propagation of long waves having small amplitude on the surface of water from a channel. The novel scheme, namely the generalized integral transform (proposed by H. Jafari [35]) coupled with the Adomian decomposition method (GIADM), is used to extract the fuzzy fractional BSe in <span><math><mrow><mi>R</mi><mo>,</mo><mspace></mspace><msup><mi>R</mi><mi>n</mi></msup></mrow></math></span> and <span><math><mrow><mo>(</mo><mn>2</mn><mi>n</mi><mi>t</mi><mi>h</mi><mo>)</mo></mrow></math></span>-order including <span><math><mrow><mi>g</mi><mi>H</mi></mrow></math></span>-differentiability. To have a clear understanding of the physical phenomena of the projected solutions, several algebraic aspects of the generalized integral transform in the fuzzy Caputo and Atangana-Baleanu fractional derivative operators are discussed. The confrontation between the findings by Caputo and ABC fractional derivatives under generalized Hukuhara differentiability are presented with appropriate values for the fractional order and uncertainty parameters <span><math><mrow><mi>℘</mi><mo>∈</mo><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow></math></span> were depicted in diagrams. According to proposed findings, hydraulic engineers, being analysts in drainage or in water management, might access adequate storage volume quantity with an uncertainty level.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 196-215"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43395174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Langrangian formulation and solitary wave solutions of a generalized Zakharov–Kuznetsov equation with dual power-law nonlinearity in physical sciences and engineering 物理科学与工程中具有对偶幂律非线性的广义Zakharov–Kuznetsov方程的拉格朗日公式和孤立波解

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2021.12.001

Chaudry Masood Khalique, Oke Davies Adeyemo

{"title":"Langrangian formulation and solitary wave solutions of a generalized Zakharov–Kuznetsov equation with dual power-law nonlinearity in physical sciences and engineering","authors":"Chaudry Masood Khalique, Oke Davies Adeyemo","doi":"10.1016/j.joes.2021.12.001","DOIUrl":"https://doi.org/10.1016/j.joes.2021.12.001","url":null,"abstract":"<div><p>This paper presents analytical studies carried out explicitly on a higher-dimensional generalized Zakharov–Kuznetsov equation with dual power-law nonlinearity arising in engineering and nonlinear science. We obtain analytic solutions for the underlying equation via Lie group approach as well as direct integration method. Moreover, we engage the extended Jacobi elliptic cosine and sine amplitude functions expansion technique to seek more exact travelling wave solutions of the equation for some particular cases. Consequently, we secure, singular and nonsingular (periodic) soliton solutions, cnoidal, snoidal as well as dnoidal wave solutions. Besides, we depict the dynamics of the solutions using suitable graphs. The application of obtained results in various fields of sciences and engineering are presented. In conclusion, we construct conserved currents of the aforementioned equation via Noether’s theorem (with Helmholtz criteria) and standard multiplier technique through the homotopy formula.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 152-168"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50189126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction and experimental verification research of a magnetic detection system for submarine pipelines based on a two-part towed platform 基于两组份拖曳平台的海底管道磁检测系统的构建与实验验证研究

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2022.01.001

Mianjin Wang , Shikun Pang , Kefan Jin , Xiaofeng Liang , Hongdong Wang , Hong Yi

{"title":"Construction and experimental verification research of a magnetic detection system for submarine pipelines based on a two-part towed platform","authors":"Mianjin Wang , Shikun Pang , Kefan Jin , Xiaofeng Liang , Hongdong Wang , Hong Yi","doi":"10.1016/j.joes.2022.01.001","DOIUrl":"10.1016/j.joes.2022.01.001","url":null,"abstract":"<div><p>With the acceleration of the investigation and development of marine resources, the detection and location of submarine pipelines have become a necessary part of modern marine engineering. Submarine pipelines are a typical weak magnetic anomaly target, and their magnetic anomaly detection can only be realized within a certain distance. At present, a towfish or an autonomous underwater vehicle (AUV) is mainly used as the platform to equip magnetometers close to the submarine pipelines for magnetic anomaly detection. However, the mother ship directly affects the towfish, thus causing control interference. The AUV cannot detect in real time, which affects the magnetic anomaly detection and creates problems regarding detection efficiency. Meanwhile, a two-part towed platform has convenient control, thus reducing the interference of the towed mother ship and real-time detection. If the platform can maintain constant altitude sailing through the controller, the data accuracy in the actual magnetic anomaly detection can be guaranteed. On the basis of a two-part towed platform, a magnetic detection system with constant altitude sailing ability for submarine pipelines was constructed in this study. In addition, experimental verification was conducted. The experimental verification research shows that the constant altitude sailing experiment of the two-part towed platform verifies that the platform has good constant altitude sailing ability in both a hydrostatic environment and the actual marine environment. Meanwhile, the offshore magnetic anomaly detection experiment of submarine pipelines verifies the stable measurement function of the magnetic field and the function of the system to detect magnetic anomaly of submarine pipelines.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 169-180"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45915999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Invariance analysis for determining the closed-form solutions, optimal system, and various wave profiles for a (2+1)-dimensional weakly coupled B-Type Kadomtsev-Petviashvili equations 确定（2+1）维弱耦合B型Kadomtsev-Petrviashvili方程闭式解、最优系统和各种波形的不变性分析

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2021.12.007

Setu Rani , Sachin Kumar , Raj Kumar

{"title":"Invariance analysis for determining the closed-form solutions, optimal system, and various wave profiles for a (2+1)-dimensional weakly coupled B-Type Kadomtsev-Petviashvili equations","authors":"Setu Rani , Sachin Kumar , Raj Kumar","doi":"10.1016/j.joes.2021.12.007","DOIUrl":"10.1016/j.joes.2021.12.007","url":null,"abstract":"<div><p>In the case of negligible viscosity and surface tension, the B-KP equation shows the evolution of quasi-one-dimensional shallow-water waves, and it is growingly used in ocean physics, marine engineering, plasma physics, optical fibers, surface and internal oceanic waves, Bose-Einstein condensation, ferromagnetics, and string theory. Due to their importance and applications, many features and characteristics have been investigated. In this work, we attempt to perform Lie symmetry reductions and closed-form solutions to the weakly coupled B-Type Kadomtsev-Petviashvili equation using the Lie classical method. First, an optimal system based on one-dimensional subalgebras is constructed, and then all possible geometric vector yields are achieved. We can reduce system order by employing the one-dimensional optimal system. Furthermore, similarity reductions and exact solutions of the reduced equations, which include arbitrary independent functional parameters, have been derived. These newly established solutions can enhance our understanding of different nonlinear wave phenomena and dynamics. Several three-dimensional and two-dimensional graphical representations are used to determine the visual impact of the produced solutions with determined parameters to demonstrate their dynamical wave profiles for various examples of Lie symmetries. Various new solitary waves, kink waves, multiple solitons, stripe soliton, and singular waveforms, as well as their propagation, have been demonstrated for the weakly coupled B-Type Kadomtsev-Petviashvili equation. Lie classical method is thus a powerful, robust, and fundamental scientific tool for dealing with NPDEs. Computational simulations are also used to prove the effectiveness of the proposed approach.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 133-144"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46866290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

On similarity solutions to (2+1)-dispersive long-wave equations (2+1)-色散长波方程的相似解

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-03-01 DOI: 10.1016/j.joes.2021.12.005

Raj Kumar , Ravi Shankar Verma , Atul Kumar Tiwari

{"title":"On similarity solutions to (2+1)-dispersive long-wave equations","authors":"Raj Kumar , Ravi Shankar Verma , Atul Kumar Tiwari","doi":"10.1016/j.joes.2021.12.005","DOIUrl":"10.1016/j.joes.2021.12.005","url":null,"abstract":"<div><p>This work is devoted to get a new family of analytical solutions of the (2+1)-coupled dispersive long wave equations propagating in an infinitely long channel with constant depth, and can be observed in an open sea or in wide channels. The solutions are obtained by using the invariance property of the similarity transformations method <em>via</em> one-parameter Lie group theory. The repeated use of the similarity transformations method can transform the system of PDEs into system of ODEs. Under adequate restrictions, the reduced system of ODEs is solved. Numerical simulation is performed to describe the solutions in a physically meaningful way. The profiles of the solutions are simulated by taking an appropriate choice of functions and constants involved therein. In each animation, a frame for dominated behavior is captured. They exhibit elastic multisolitons, single soliton, doubly solitons, stationary, kink and parabolic nature. The results are significant since these have confirmed some of the established results of S. Kumar et al. (2020) and K. Sharma et al. (2020). Some of their solutions can be deduced from the results derived in this work. Other results in the existing literature are different from those in this work.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 2","pages":"Pages 111-123"},"PeriodicalIF":7.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44824644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

An artificial intelligence-aided design (AIAD) of ship hull structures 船体结构的人工智能辅助设计

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-01-01 DOI: 10.1016/j.joes.2021.11.003

Yu Ao , Yunbo Li , Jiaye Gong , Shaofan Li

{"title":"An artificial intelligence-aided design (AIAD) of ship hull structures","authors":"Yu Ao , Yunbo Li , Jiaye Gong , Shaofan Li","doi":"10.1016/j.joes.2021.11.003","DOIUrl":"10.1016/j.joes.2021.11.003","url":null,"abstract":"<div><p>Ship-hull design is a complex process because the any slight local alteration in ship hull structure may significantly change the hydrostatic and hydrodynamic performances of a ship. To find the optimum hull shape under the design requirements, the state-of-art of ship hull design combines computational fluid dynamics computation with geometric modeling. However, this process is very computationally intensive, which is only suitable at the final stage of the design process. To narrow down the design parameter space, in this work, we have developed an AI-based deep learning neural network to realize a real-time prediction of the total resistance of the ship-hull structure in its initial design process. In this work, we have demonstrated how to use the developed DNN model to carry out the initial ship hull design. The validation results showed that the deep learning model could accurately predict the ship hull’s total resistance accurately after being trained, where the average error of all samples in the testing dataset is lower than 4%. Simultaneously, the trained deep learning model can predict the hip’s performances in real-time by inputting geometric modification parameters without tedious preprocessing and calculation processes. The machine learning approach in ship hull design proposed in this work is the first step towards the artificial intelligence-aided design in naval architectures.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 1","pages":"Pages 15-32"},"PeriodicalIF":7.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45989683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

New generalized fuzzy transform computations for solving fractional partial differential equations arising in oceanography 求解海洋学中分数阶偏微分方程的新的广义模糊变换计算

IF 7.1 1区工程技术

Journal of Ocean Engineering and Science Pub Date : 2023-01-01 DOI: 10.1016/j.joes.2021.11.004

Saima Rashid , Rehana Ashraf , Zakia Hammouch

{"title":"New generalized fuzzy transform computations for solving fractional partial differential equations arising in oceanography","authors":"Saima Rashid , Rehana Ashraf , Zakia Hammouch","doi":"10.1016/j.joes.2021.11.004","DOIUrl":"10.1016/j.joes.2021.11.004","url":null,"abstract":"<div><p>This paper presents a study of nonlinear waves in shallow water. The Korteweg-de Vries (KdV) equation has a canonical version based on oceanography theory, the shallow water waves in the oceans, and the internal ion-acoustic waves in plasma. Indeed, the main goal of this investigation is to employ a semi-analytical method based on the homotopy perturbation transform method (HPTM) to obtain the numerical findings of nonlinear dispersive and fifth order KdV models for investigating the behaviour of magneto-acoustic waves in plasma via fuzziness. This approach is connected with the fuzzy generalized integral transform and HPTM. Besides that, two novel results for fuzzy generalized integral transformation concerning fuzzy partial <span><math><mrow><mi>g</mi><mi>H</mi></mrow></math></span>-derivatives are presented. Several illustrative examples are illustrated to show the effectiveness and supremacy of the proposed method. Furthermore, 2D and 3D simulations depict the comparison analysis between two fractional derivative operators (Caputo and Atangana-Baleanu fractional derivative operators in the Caputo sense) under generalized <span><math><mrow><mi>g</mi><mi>H</mi></mrow></math></span>-differentiability. The projected method (GHPTM) demonstrates a diverse spectrum of applications for dealing with nonlinear wave equations in scientific domains. The current work, as a novel use of GHPTM, demonstrates some key differences from existing similar methods.</p></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"8 1","pages":"Pages 55-78"},"PeriodicalIF":7.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45240314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6