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Article ; Online: Cross-View Attention Interaction Fusion Algorithm for Stereo Super-Resolution

Yaru Zhang / Jiantao Liu / Tong Zhang / Zhibiao Zhao

Applied Sciences, Vol 13, Iss 7265, p

2023 Volume 7265

Abstract: In the process of stereo super-resolution reconstruction, in addition to the richness of the extracted feature information directly affecting the texture details of the reconstructed image, the texture details of the corresponding pixels between stereo ... ...

Abstract	In the process of stereo super-resolution reconstruction, in addition to the richness of the extracted feature information directly affecting the texture details of the reconstructed image, the texture details of the corresponding pixels between stereo image pairs also have an important impact on the reconstruction accuracy in the process of network learning. Therefore, aiming at the information interaction and stereo consistency of stereo image pairs, a cross-view attention interaction fusion stereo super-resolution algorithm is proposed. Firstly, based on parallax attention mechanism and triple attention mechanism, an attention stereo fusion module is constructed. The attention stereo fusion module is inserted between different levels of two single image super-resolution network branches, and the attention weight is calculated through the cross dimensional interaction of the three branches. It makes full use of the ability of single image super-resolution network to extract single view information and further maintaining the stereo consistency between stereo image pairs. Then, an enhanced cross-view interaction strategy including three fusion methods is proposed. Specifically, the vertical sparse fusion method is used to integrate the interior view information of different levels in the two single image super-resolution sub branches, the horizontal dense fusion method is used to connect the adjacent attention stereo fusion modules and the constraint between stereo image consistency is further strengthened in combination with the feature fusion method. Finally, the experimental results on Flickr 1024, Middlebury and KITTI benchmark datasets show that the proposed algorithm is superior to the existing stereo image super-resolution methods in quantitative measurement and qualitative visual quality while maintaining the stereo consistency of image pairs.
Keywords	stereo super-resolution ; convolutional neural network ; interaction fusion ; attention mechanism ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	710
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Catholyte Modulation and Prussian Blue/Berlin Green Redox Mediator Enabling Efficient High‐Potential Mn2+/MnO2 Reaction for Aqueous Hybrid Batteries

Yaru Zhang / Mengmeng Li / Hao Li / Yingchun Miao / Meng Yang / Xiangyu Zhao

Small Structures, Vol 5, Iss 1, Pp n/a-n/a (2024)

2024

Abstract: The use of multielectron Mn2+/MnO2 cathode reaction achieves high‐energy aqueous acid–base asymmetric hybrid batteries. However, the ion crossover through the membrane and the accumulation of unreacted MnO2 lead to serve potential and capacity decay of ... ...

Abstract	The use of multielectron Mn2+/MnO2 cathode reaction achieves high‐energy aqueous acid–base asymmetric hybrid batteries. However, the ion crossover through the membrane and the accumulation of unreacted MnO2 lead to serve potential and capacity decay of the cathode during cycling. Herein, the catholyte modulation using the KCl additive and the design of a Prussian blue/Berlin green (PB/BG) redox mediator on the cathode current collector are developed to promote high‐potential Mn2+/MnO2 reaction. The addition of saturated KCl greatly suppresses the ion crossover to maintain the catholyte acidity, thus enabling high‐potential Mn2+/MnO2 reaction and stable high‐voltage discharge plateau of ≈2.2 V for the hybrid battery at a prolonged cycling. The reversible MnO2 deposition is effectively improved by the PB/BG redox mediator, which contributes to significant enhancements in the reversible capacity, rate capability, and cycling stability of the cathode. Importantly, the as‐assembled hybrid battery exhibits the highest energy density of ≈260 Wh kg−1 (based on the mass of the aqueous MnCl2 catholyte and a hydrogen storage anode material) among the previously reported Mn‐based acid–base asymmetric batteries.
Keywords	acid–base asymmetric batteries ; deposition/dissolution reactions ; ion crossover ; Prussian blue ; redox mediators ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Wiley-VCH
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Drought did not change the linear relationship between chlorophyll fluorescence and terrestrial gross primary production under universal biomes

Liping Jia / Yi He / Wanqing Liu / Yanlin Li / Yaru Zhang

Frontiers in Forests and Global Change, Vol

2023 Volume 6

Abstract: IntroductionSatellite observations of sun-induced chlorophyll fluorescence (SIF) are increasingly considered a “probe” for photosynthesis. In recent years the emergence of SIF has facilitated regional and global monitoring of vegetation photosynthesis. ... ...

Abstract	IntroductionSatellite observations of sun-induced chlorophyll fluorescence (SIF) are increasingly considered a “probe” for photosynthesis. In recent years the emergence of SIF has facilitated regional and global monitoring of vegetation photosynthesis. On the one hand, there is still controversy about the liner or non-linear SIF-GPP relationship and whether high-temperature events will change the linear relationship. On the other hand, it is unclear whether different vegetation types will affect the SIF-GPP. We used GOSIF and MOD17A2 GPP to study the different relationships under five vegetation types during the long-term climate change period and the extreme drought in 2009/2010 in southwest China.MethodsIn this study, curve fitting was used to explore the relationship of SIF and GPP under long time series and extreme drought period.ResultsWe found that during the long-term climate change period, there was a generally linear SIF-GPP relationship under five vegetation types. The correlation is almost universally maintained at the r2 = 0.92 level. During the drought, the extremely high temperature did not change the linear relationship. Besides the farmland ecosystem, the correlation remained at the r2 = 0.85.DiscussionOur study shows that the linear relationship of SIF-GPP is not influenced by drought on a large scale, and there is a general SIF-GPP relationship in different vegetation types. In the case of extreme drought, irrigation measures adopted by farmers in response to heat conditions may affect the SIF-GPP relationship of farmland.
Keywords	sun-induced chlorophyll fluorescence (SIF) ; gross primary productivity (GPP) ; normalized difference vegetation index (NDVI) ; drought monitoring ; southwest China ; Forestry ; SD1-669.5 ; Environmental sciences ; GE1-350
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Coping Decisions of Production Enterprises under Low-Carbon Economy

Yanhong Yuan / Yaru Zhang / Lei Wang / Li Wang

Sustainability, Vol 14, Iss 9593, p

2022 Volume 9593

Abstract: It aims to study the production and emission reduction decisions of production enterprises under carbon constraints. In the case of carbon constraints in production, manufacturers have four strategic choices: production within the carbon quota, adopting ... ...

Abstract	It aims to study the production and emission reduction decisions of production enterprises under carbon constraints. In the case of carbon constraints in production, manufacturers have four strategic choices: production within the carbon quota, adopting emission reduction technologies, purchasing carbon emission rights, and using emission reduction technologies and purchasing carbon emission rights. Based on the income model of production enterprises under four different strategies, first, under the condition of maximizing the interests of production enterprises, the optimal profit, optimal production, optimal total carbon emission, and optimal emission reduction rate under different carbon constraints are determined, and summarize its laws. Afterward, in order to further optimize corporate profits, the impact of changes in the carbon reduction scale cost and consumers’ low-carbon preference was studied. Several important conclusions are shown as follows. First, the stricter the carbon constraint policy, the greater the optimal emission reduction rate of enterprises. Second, the adoption of emission reduction technology can effectively reduce the impact of carbon constraint on output. Third, the optimal strategy is to both reduce emissions and purchase carbon emission rights, which can realize environmental economic dividends. Fourth, the lower the cost factor of the carbon reduction scale and the higher the low-carbon preference of consumers, the easier it is for firms to achieve carbon sufficiency in their production.
Keywords	carbon constraint ; carbon reduction technology ; carbon emission rights ; consumers’ low-carbon preference ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	338 ; 660
Language	English
Publishing date	2022-08-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Base-flow segmentation and character analysis of the Huangfuchuan Basin in the middle reaches of the Yellow River, China

Yaru Zhang / Yi He / Xingmin Mu / Liping Jia / Yanlin Li

Frontiers in Environmental Science, Vol

2022 Volume 10

Abstract: In recent years, with the deterioration of the ecological environment, runoff in the Yellow River has been decreasing. Given these phenomena, it is necessary to research the base-flow segmentation methods and its characteristics. The Huangfuchuan Basin ... ...

Abstract	In recent years, with the deterioration of the ecological environment, runoff in the Yellow River has been decreasing. Given these phenomena, it is necessary to research the base-flow segmentation methods and its characteristics. The Huangfuchuan Basin in the middle reaches of the Yellow River basin was selected as the research area. This paper calculated the base-flow with commonly used base-flow segmentation methods, including Base-flow index method (BFI), Hydrograph-separation techniques (HYSEP), and the digital filtering methods, and compared the applicability of these methods in the study area. Then the variation characteristics, abrupt change year, periodic change, and future trend of the base-flow were analyzed. The results are as follows: 1) Through the analysis and comparison of several common base-flow segmentation methods, these methods had a marked difference in base-flow segmentation. The variance and extreme-ratio of DF4 in the digital filtering methods were small. The correlation between DF4 and other methods was high. DF4 in the digital filtering methods was the most appropriate method in the research area. 2)The runoff and base-flow index presented a decreasing trend. The annual average runoff was 1,100.27 × 104 m3, and the maximum base-flow was 0.21. The base-flow also showed a significant decrease trend by the Mann-Kendall trend test, the average base-flow was 10,578.35 × 104 m3. 3) The base-flow had periodic variations of 3–6, 7–18, and 19–32. In the 19–32 years time scale, three oscillations alternated between abundant and dry. The whole time was 31 years as the center of the periodic change, the first primary cycle of base-flow change. 4) The base-flow mutation occurred in 1986. The Hurst index of base-flow in the Huangfuchuan Basin was 0.84. It was shown that the trend of future development is positively correlated with past change, showing a trend of continuous decrease. Selecting the appropriate method of base-flow segmentation and reasonably analyzing the variation characteristics of ...
Keywords	base-flow ; the Huangfuchuan basin ; base-flow segmentation ; wavelet analysis ; Mann-Kendall test ; Environmental sciences ; GE1-350
Language	English
Publishing date	2022-08-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Facile Preparation of a Rhodamine B Derivative-Based Fluorescent Probe for Visual Detection of Iron Ions

Zhihui Qin / Weiwei Su / Ping Liu / Jinming Ma / Yaru Zhang / Tifeng Jiao

ACS Omega, Vol 6, Iss 38, Pp 25040-

2021 Volume 25048

Keywords	Chemistry ; QD1-999
Language	English
Publishing date	2021-09-01T00:00:00Z
Publisher	American Chemical Society
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Heat Build-Up and Rolling Resistance Analysis of a Solid Tire

Hong He / Jinming Liu / Yaru Zhang / Xue Han / William V. Mars / Liqun Zhang / Fanzhu Li

Polymers, Vol 14, Iss 2210, p

Experimental Observation and Numerical Simulation with Thermo-Mechanical Coupling Method

2022 Volume 2210

Abstract: The hysteresis of rubber materials due to deformation and viscoelasticity is the main reason for the heat build-up (HBU) and rolling resistance (RR) of the rolling tire. It is important to realize the high precision prediction of HBU and RR of tire for ... ...

Abstract	The hysteresis of rubber materials due to deformation and viscoelasticity is the main reason for the heat build-up (HBU) and rolling resistance (RR) of the rolling tire. It is important to realize the high precision prediction of HBU and RR of tire for the optimal design of high-performance fuel-saving tire. In this work, a thermo-mechanical coupling method based on Endurica and Abaqus co-simulation was used to predict the steady-state temperature distribution and RR of three finite element models (Lagrangian–Eulerian model, Lagrangian model, and Plane Strain model) of the solid tires under different loads and rotating speeds. The simulation results were compared with the experimental results. The Kraus self-heating model was utilized in the thermo-mechanical coupling method, which realized the quantitative relationship between the dynamic loss modulus of rubber and the loading conditions (temperature, strain, and strain rate). Special attention was paid to the determination of the material parameters in the Kraus self-heating model. The comparison between simulation results and experimental results shows that the Lagrangian model had the highest prediction accuracy, and the average prediction errors of the steady-state surface temperature and RR under three loading conditions were 3.4% and 7.9%, respectively. The Lagrangian–Eulerian model came in the second with average errors of 9.7% and 11.1%, respectively. The Plane Strain model had the worst prediction accuracy, with the average errors of 21.4% and 44.6%, respectively. In terms of the simulation time, the Plane Strain model had the lowest cost, and the average calculation time was 1143 s. The Lagrangian–Eulerian model took the second place, with an average calculation time of 2621 s. The Lagrangian model had the highest computation cost, with an average time of 5597 s. The comparison between the simulation results and the experimental results verified the effectiveness of the thermo-mechanical coupling analysis method. The methods of three finite element ...
Keywords	rolling resistance ; heat build-up ; thermo-mechanical ; viscoelastic ; Lagrangian–Eulerian model ; Organic chemistry ; QD241-441
Subject code	670
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Study on the Compatibility of Gas Adsorbents Used in a New Insulating Gas Mixture C 4 F 7 N/CO 2

Qingdan Huang / Yong Wang / Jing Liu / Yaru Zhang / Lian Zeng

Processes, Vol 7, Iss 10, p

2019 Volume 698

Abstract: An environment-friendly insulating gas, perfluoroisobutyronitrile (C 4 F 7 N), has been developed recent years. Due to its relatively high liquefaction temperature (around −4.7 °C), buffer gases, such as CO 2 and N 2 , are usually mixed with C 4 F 7 N to ...

Abstract	An environment-friendly insulating gas, perfluoroisobutyronitrile (C 4 F 7 N), has been developed recent years. Due to its relatively high liquefaction temperature (around −4.7 °C), buffer gases, such as CO 2 and N 2 , are usually mixed with C 4 F 7 N to increase the pressure of the filled insulating medium. During these processes, the insulating gases may be contaminated with micro-water, and the mixture of H 2 O with C 4 F 7 N could produce HF under breakdown voltage condition, which is harmful to the gas insulated electricity transfer equipment. Therefore, removal of H 2 O and HF in situ from the gas insulated electricity transfer equipment is significant to its operation security. The adsorbents with the ability to remove H 2 O but without obvious C 4 F 7 N/CO 2 adsorption capacity are essential to be used in this system. In this work, a series of industrial adsorbents and desiccants were tested for their compatibility with C 4 F 7 N/CO 2 . Pulse adsorption tests were conducted to evaluate the adsorption performance of these adsorbents and desiccants on C 4 F 7 N and CO 2 . The 5A molecular sieve showed high adsorption of C 4 F 7 N (22.82 mL/g) and CO 2 (43.86 mL/g); F-03 did not show adsorption capacity with C 4 F 7 N, however, it adsorbed CO 2 (26.2 mL/g) clearly. Some other HF adsorbents, including NaF, CaF 2 , MgF 2 , Al(OH) 3 , and some desiccants including CaCl 2 , Na 2 SO 4 , MgSO 4 were tested for their compatibility with C 4 F 7 N and CO 2 , and they showed negligible adsorption capacity on C 4 F 7 N and CO 2 . The results suggested that these adsorbents used in the gas insulated electricity transfer equipment filled with SF 6 (mainly 5A and F-03 molecular sieves) are not suitable anymore. The results of this work suggest that it is a good strategy to use a mixture of desiccants and HF adsorbents as new adsorbents in the equipment filled with C 4 F 7 N/CO 2 .
Keywords	perfluoroisobutyronitrile ; adsorbents ; desiccants ; hf removal ; insulating gas ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	290 ; 669
Language	English
Publishing date	2019-10-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Alternative Environmentally Friendly Insulating Gases for SF 6

Yong Wang / Danqing Huang / Jing Liu / Yaru Zhang / Lian Zeng

Processes, Vol 7, Iss 4, p

2019 Volume 216

Abstract: Sulfur hexafluoride (SF 6 ) shows excellent insulation performance as an insulating gas. It is suitable for various climate conditions due to its low boiling point (−64 °C). Therefore, it has been widely used in power grid equipment. However, its global ... ...

Abstract	Sulfur hexafluoride (SF 6 ) shows excellent insulation performance as an insulating gas. It is suitable for various climate conditions due to its low boiling point (−64 °C). Therefore, it has been widely used in power grid equipment. However, its global warming potential (GWP) is 23,500 times higher than that of CO 2 . Thus, it is imperative to find an environmentally friendly insulating gas with excellent insulation performance, lower GWP, and which is harmless to equipment and workers to replace SF 6 . In this review, four possible alternatives, including perfluorocarbons, trifluoroiodomethane, perfluorinated ketones, and fluoronitrile are reviewed in terms of basic physicochemical properties, insulation properties, decomposition properties, and compatibility with metals. The influences of trace H 2 O or O 2 on their insulation performances are also discussed. The insulation strengths of these insulating gases were comparable to or higher than that of SF 6 . The GWPs of these insulating gases were lower than that of SF 6 . Due to their relatively high boiling point, they should be used as a mixture with buffering gases with low boiling points. Based on these four characteristics, perfluorinated ketones (C 5 F 10 O and C 6 F 12 O) and fluoronitrile (C 4 F 7 N) could partially substitute SF 6 in some electrical equipment. Finally, some future needs and perspectives of environmentally friendly insulating gases are addressed for further studies.
Keywords	SF 6 ; environmentally friendly insulating gas ; perfluorocarbon ; trifluoroiodomethane ; perfluorinated ketone ; fluoronitrile ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	290
Language	English
Publishing date	2019-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Research and Implementation of Document-Relational Data Query Execution Tech-nology

MA Zhicheng, YUAN Haifeng, GU Yang, LIU Yaru, ZHANG Xiao

Jisuanji kexue yu tansuo, Vol 14, Iss 8, Pp 1315-

2020 Volume 1326

Abstract: With the arrival of the era of big data, Internet applications have produced abundant data types. Integ-rating storage, query and organization of data with various structures is a research hotspot of large data management system. The relational database ... ...

Abstract	With the arrival of the era of big data, Internet applications have produced abundant data types. Integ-rating storage, query and organization of data with various structures is a research hotspot of large data management system. The relational database and NoSQL document database are performed unified management. Two different database engines supporting structured and semi-structured data are integrated into the large data management system. The query engine ENTIA is implemented to perform query processing. Based on the global view, a unified query interface is provided to users. The end user does not need to care about the type and structure of the data, and the physical storage location. It only needs to send a request to ENTIA according to the business requirements. A large number of preliminary experiments are carried out to optimize the query based on heuristic rules. The single query is rewritten into multiple query sub-tasks that can be executed in parallel. The calculation is pushed to the appropriate database engine, which makes full use of the computing resources of the system and greatly improves the query performance of the system. Represented by two peer-to-peer engines of relational database PostgreSQL and document database MongoDB, ENTIA’s query ability for multiple data types and query optimization are realized. ENTIA can correctly execute mixed queries through functional coincidence experiments. The effectiveness of the optimization method is proven by a number of performance comparison experiments.
Keywords	relation database ; document database ; hybrid query ; query optimization ; Electronic computers. Computer science ; QA75.5-76.95
Subject code	005
Language	Chinese
Publishing date	2020-08-01T00:00:00Z
Publisher	Journal of Computer Engineering and Applications Beijing Co., Ltd., Science Press
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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