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  1. Book: Lin chuang di shi li xue

    Sun, Baochen

    2013  

    Author's details zhu bian Sun Baochen, Hu Ailian
    MeSH term(s) Vision, Low/rehabilitation ; Vision Disorders/prevention & control
    Language Chinese
    Size 15, 408, 4 pages :, illustrations, portraits.
    Edition Di 1 ban.
    Document type Book
    ISBN 9787117183833 ; 7117183837
    Database Catalogue of the US National Library of Medicine (NLM)

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  2. Article ; Online: Self-assembled Co

    Sun, Baochen / Wang, Xinqiang / Yang, Dongxu / Chen, Yuanfu

    RSC advances

    2019  Volume 9, Issue 30, Page(s) 17238–17245

    Abstract: Self-assembled ... ...

    Abstract Self-assembled Co
    Language English
    Publishing date 2019-06-03
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/c9ra02007a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Self-assembled Co0.85Se/carbon nanowires as a highly effective and stable electrocatalyst for the hydrogen evolution reaction

    Sun, Baochen / Wang, Xinqiang / Yang, Dongxu / Chen, Yuanfu

    RSC advances. 2019 June 03, v. 9, no. 30

    2019  

    Abstract: Self-assembled Co0.85Se/carbon nanowires, constructed by Co0.85Se nanoparticles homogenously embedded into carbon nanowires (Co0.85Se@CNWs), have been synthesized through a facile solvothermal reaction and selenylation process. Compared to the bare Co0 ... ...

    Abstract Self-assembled Co0.85Se/carbon nanowires, constructed by Co0.85Se nanoparticles homogenously embedded into carbon nanowires (Co0.85Se@CNWs), have been synthesized through a facile solvothermal reaction and selenylation process. Compared to the bare Co0.85Se NWs, the Co0.85Se@CNW hybrid demonstrates high efficiency and stability for HER. It has a small Tafel slope of 43.4 mV dec−1, a low onset potential of 138 mV vs. RHE, and a high cycling stability with more than 95% current retention after 1500 voltammetry cycles. The outstanding HER performance of Co0.85Se@CNWs is attributed to its unique particle-in-nanowire architecture, which not only prevents the Co0.85Se nanoparticles from aggregation, but also provides a highly conductive CNW matrix to promote the charge transfer in the electrocatalytic reaction, further enhancing the catalytic activity. This work provides a new strategy to rationally design transition metal-based selenide hybrids as highly effective and stable electrocatalysts for HER.
    Keywords carbon ; catalysts ; catalytic activity ; electrochemistry ; hydrogen production ; nanoparticles ; nanowires ; selenides
    Language English
    Dates of publication 2019-0603
    Size p. 17238-17245.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/c9ra02007a
    Database NAL-Catalogue (AGRICOLA)

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  4. Book ; Online: LOWA

    Guo, Xiaoyuan / Chen, Kezhen / Rao, Jinmeng / Zhang, Yawen / Sun, Baochen / Yang, Jie

    Localize Objects in the Wild with Attributes

    2023  

    Abstract: We present LOWA, a novel method for localizing objects with attributes effectively in the wild. It aims to address the insufficiency of current open-vocabulary object detectors, which are limited by the lack of instance-level attribute classification and ...

    Abstract We present LOWA, a novel method for localizing objects with attributes effectively in the wild. It aims to address the insufficiency of current open-vocabulary object detectors, which are limited by the lack of instance-level attribute classification and rare class names. To train LOWA, we propose a hybrid vision-language training strategy to learn object detection and recognition with class names as well as attribute information. With LOWA, users can not only detect objects with class names, but also able to localize objects by attributes. LOWA is built on top of a two-tower vision-language architecture and consists of a standard vision transformer as the image encoder and a similar transformer as the text encoder. To learn the alignment between visual and text inputs at the instance level, we train LOWA with three training steps: object-level training, attribute-aware learning, and free-text joint training of objects and attributes. This hybrid training strategy first ensures correct object detection, then incorporates instance-level attribute information, and finally balances the object class and attribute sensitivity. We evaluate our model performance of attribute classification and attribute localization on the Open-Vocabulary Attribute Detection (OVAD) benchmark and the Visual Attributes in the Wild (VAW) dataset, and experiments indicate strong zero-shot performance. Ablation studies additionally demonstrate the effectiveness of each training step of our approach.
    Keywords Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Artificial Intelligence
    Subject code 004
    Publishing date 2023-05-31
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Book ; Online: Supervision Interpolation via LossMix

    Vu, Thanh / Sun, Baochen / Yuan, Bodi / Ngai, Alex / Li, Yueqi / Frahm, Jan-Michael

    Generalizing Mixup for Object Detection and Beyond

    2023  

    Abstract: The success of data mixing augmentations in image classification tasks has been well-received. However, these techniques cannot be readily applied to object detection due to challenges such as spatial misalignment, foreground/background distinction, and ... ...

    Abstract The success of data mixing augmentations in image classification tasks has been well-received. However, these techniques cannot be readily applied to object detection due to challenges such as spatial misalignment, foreground/background distinction, and plurality of instances. To tackle these issues, we first introduce a novel conceptual framework called Supervision Interpolation (SI), which offers a fresh perspective on interpolation-based augmentations by relaxing and generalizing Mixup. Based on SI, we propose LossMix, a simple yet versatile and effective regularization that enhances the performance and robustness of object detectors and more. Our key insight is that we can effectively regularize the training on mixed data by interpolating their loss errors instead of ground truth labels. Empirical results on the PASCAL VOC and MS COCO datasets demonstrate that LossMix can consistently outperform state-of-the-art methods widely adopted for detection. Furthermore, by jointly leveraging LossMix with unsupervised domain adaptation, we successfully improve existing approaches and set a new state of the art for cross-domain object detection.

    Comment: AAAI-24 Camera Ready Version, with supplementary material, 15 pages
    Keywords Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Artificial Intelligence ; Computer Science - Machine Learning
    Subject code 006
    Publishing date 2023-03-18
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Book ; Online: Evaluation and Enhancement of Semantic Grounding in Large Vision-Language Models

    Lu, Jiaying / Rao, Jinmeng / Chen, Kezhen / Guo, Xiaoyuan / Zhang, Yawen / Sun, Baochen / Yang, Carl / Yang, Jie

    2023  

    Abstract: Large Vision-Language Models (LVLMs) offer remarkable benefits for a variety of vision-language tasks. However, a challenge hindering their application in real-world scenarios, particularly regarding safety, robustness, and reliability, is their ... ...

    Abstract Large Vision-Language Models (LVLMs) offer remarkable benefits for a variety of vision-language tasks. However, a challenge hindering their application in real-world scenarios, particularly regarding safety, robustness, and reliability, is their constrained semantic grounding ability, which pertains to connecting language to the physical-world entities or concepts referenced in images. Therefore, a crucial need arises for a comprehensive study to assess the semantic grounding ability of widely used LVLMs. Despite the significance, sufficient investigation in this direction is currently lacking. Our work bridges this gap by designing a pipeline for generating large-scale evaluation datasets covering fine-grained semantic information, such as color, number, material, etc., along with a thorough assessment of seven popular LVLMs' semantic grounding ability. Results highlight prevalent misgrounding across various aspects and degrees. To address this issue, we propose a data-centric enhancement method that aims to improve LVLMs' semantic grounding ability through multimodal instruction tuning on fine-grained conversations. Experiments on enhanced LVLMs demonstrate notable improvements in addressing misgrounding issues.

    Comment: This paper has been accepted to the AAAI'24 Workshop on Responsible Language Models (ReLM 2024)
    Keywords Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Computation and Language
    Subject code 004
    Publishing date 2023-09-07
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Hierarchically Porous W-Doped CoP Nanoflake Arrays as Highly Efficient and Stable Electrocatalyst for pH-Universal Hydrogen Evolution.

    Wang, Xinqiang / Chen, Yuanfu / Yu, Bo / Wang, Zegao / Wang, Haiqi / Sun, Baochen / Li, Wenxin / Yang, Dongxu / Zhang, Wanli

    Small (Weinheim an der Bergstrasse, Germany)

    2019  Volume 15, Issue 37, Page(s) e1902613

    Abstract: It is still challenging to develop high-efficiency and low-cost non-noble metal-based electrocatalysts for hydrogen evolution reaction (HER) in pH-universal electrolytes. Herein, hierarchically porous W-doped CoP nanoflake arrays on carbon cloth (W-CoP ... ...

    Abstract It is still challenging to develop high-efficiency and low-cost non-noble metal-based electrocatalysts for hydrogen evolution reaction (HER) in pH-universal electrolytes. Herein, hierarchically porous W-doped CoP nanoflake arrays on carbon cloth (W-CoP NAs/CC) are synthesized via facile liquid-phase reactions and a subsequent phosphorization process. The W-CoP NAs/CC hybrid can be directly employed as a binder-free electrocatalyst and delivers superior HER performance in pH-universal electrolytes. Especially, it delivers very low overpotentials of 89, 94, and 102 mV to reach a current density of 10 mA cm
    Language English
    Publishing date 2019-07-30
    Publishing country Germany
    Document type Journal Article
    ISSN 1613-6829
    ISSN (online) 1613-6829
    DOI 10.1002/smll.201902613
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: [Comparison of visual impairment caused by trachoma in China between 1978 and 2006].

    Hu, Ailian / Cai, Xiaogu / Qiao, Liya / Zhang, Ye / Zhang, Xu / Sun, Baochen / Wang, Ningli

    Zhonghua yan ke za zhi] Chinese journal of ophthalmology

    2015  Volume 51, Issue 10, Page(s) 768–772

    Abstract: Objective: To understand the distribution of visual impairment caused by trachoma in China and provide evidences for evaluation of eliminating blinding trachoma in China in the mission of Vision 2020.: Methods: Sampling study. The results from the ... ...

    Abstract Objective: To understand the distribution of visual impairment caused by trachoma in China and provide evidences for evaluation of eliminating blinding trachoma in China in the mission of Vision 2020.
    Methods: Sampling study. The results from the first year 1987 and second (year 2006) national sampling surveys of disabled persons were analyzed. Chi-square test was performed using SAS 9.30 to analyze the rates of visual impairment caused by trachoma in different groups. Unifactor and multifactor analyses were applied to analyze the relevance between visual impairment caused by trachoma and risk factors, including gender and age.
    Results: The rate of visual impairment caused by trachoma was 102.01 persons/100 000 in 1987 and 17.62 persons/100 000 in 2006. The percentage of trachoma in all kinds of visual impairment was 14.25% in 1987 and 1.87% in 2006, and the difference was significant (F = 1 382.6, P < 0.01). Spatial aggregation was obvious in visual impairment caused by trachoma. H-aggregation areas included Hubei, Sichuan, Anhui, Shannxi, Guizhou, Hunan provinces and Chongqing Municipality. Survival time without trachoma between 1987 and 2006 was significantly different (F = 2 745.9, P < 0.01). The rate and risk of visual impairment caused by trachoma increased with age. Except the group of > 85 years, the rate of visual impairment caused by trachoma in all age groups in 1987 was significantly higher than that in 2006. The risk of visual impairment caused by trachoma in 1987 was 5.8 times that in 2006. If the other risk factors were not involved, the risk in 1987 was 8.75 times that in 2006. The risk in females was twice that in males.
    Conclusion: Both, the rate and risk of visual impairment caused by trachoma were significantly reduced in China. Impressive progresses were achieved in trachoma prevention and control.
    MeSH term(s) Age Factors ; Chi-Square Distribution ; China/epidemiology ; Female ; Humans ; Male ; Trachoma/complications ; Vision Disorders/epidemiology ; Vision Disorders/etiology
    Language Chinese
    Publishing date 2015-10
    Publishing country China
    Document type English Abstract ; Journal Article
    ZDB-ID 604574-1
    ISSN 0412-4081
    ISSN 0412-4081
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Modeling Radiometric Uncertainty for Vision with Tone-Mapped Color Images.

    Chakrabarti, Ayan / Xiong, Ying / Sun, Baochen / Darrell, Trevor / Scharstein, Daniel / Zickler, Todd / Saenko, Kate

    IEEE transactions on pattern analysis and machine intelligence

    2014  Volume 36, Issue 11, Page(s) 2185–2198

    Abstract: To produce images that are suitable for display, tone-mapping is widely used in digital cameras to map linear color measurements into narrow gamuts with limited dynamic range. This introduces non-linear distortion that must be undone, through a ... ...

    Abstract To produce images that are suitable for display, tone-mapping is widely used in digital cameras to map linear color measurements into narrow gamuts with limited dynamic range. This introduces non-linear distortion that must be undone, through a radiometric calibration process, before computer vision systems can analyze such photographs radiometrically. This paper considers the inherent uncertainty of undoing the effects of tone-mapping. We observe that this uncertainty varies substantially across color space, making some pixels more reliable than others. We introduce a model for this uncertainty and a method for fitting it to a given camera or imaging pipeline. Once fit, the model provides for each pixel in a tone-mapped digital photograph a probability distribution over linear scene colors that could have induced it. We demonstrate how these distributions can be useful for visual inference by incorporating them into estimation algorithms for a representative set of vision tasks.
    Language English
    Publishing date 2014-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1939-3539
    ISSN (online) 1939-3539
    DOI 10.1109/TPAMI.2014.2318713
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [Adeno-associated virus mediated delivery and expression of GDNF cDNA in cultured bovine iris pigment epithelial cells].

    Li, Yi-bin / Sun, Bao-chen

    Zhonghua yan ke za zhi] Chinese journal of ophthalmology

    2004  Volume 40, Issue 1, Page(s) 45–48

    Abstract: Objectives: To obtain transgenic bovine iris pigment epithelial cells (IPECs) by adeno-associated virus (AAV) mediated delivery of cDNA of glial cell-line derived neurotrophic factor (GDNF).: Methods: AAV-GDNF was titrated by slot blotting. Cultured ... ...

    Abstract Objectives: To obtain transgenic bovine iris pigment epithelial cells (IPECs) by adeno-associated virus (AAV) mediated delivery of cDNA of glial cell-line derived neurotrophic factor (GDNF).
    Methods: AAV-GDNF was titrated by slot blotting. Cultured bovine passage two IPECs were transfected using AAV-GDNF at dosage of MOI (multiplicity of infection) = 50, then were cultured in DMEM medium complemented with 3% FBS for 4 weeks with no change of medium. The expression of GDNF in culture medium was examined using ELISA test. By using the same methods, cultured passage two IPECs were transfected with AAV-GFP (green fluorescent protein) at dosage of MOI = 50, and then were cultured in DMEM medium complemented with 20% FBS. The expression of GFP in IPECs was examined using fluorescence microscope every 2 days after transfection.
    Results: (1) GFP expression in IPECs could not be detected until 4 days after transfection. The positive GFP expression in IPECs reached fastigium in day 8 or 10. (2) According to the results of ELISA test, concentration of GDNF in the culture medium was (17.14 +/- 1.10) micro g/L.
    Conclusions: AAV-GDNF can effectively transfect cultured IPECs, and the transgenic cells show a high expression of GDNF.
    MeSH term(s) Animals ; Cattle ; Cells, Cultured ; DNA, Complementary/metabolism ; Dependovirus/genetics ; Dependovirus/metabolism ; Enzyme-Linked Immunosorbent Assay ; Epithelial Cells/metabolism ; Glial Cell Line-Derived Neurotrophic Factor ; Green Fluorescent Proteins ; Humans ; Iris/cytology ; Iris/metabolism ; Luminescent Proteins/genetics ; Luminescent Proteins/metabolism ; Microscopy, Fluorescence ; Nerve Growth Factors/genetics ; Pigment Epithelium of Eye/cytology ; Pigment Epithelium of Eye/metabolism ; Transfection/methods
    Chemical Substances DNA, Complementary ; GDNF protein, human ; Glial Cell Line-Derived Neurotrophic Factor ; Luminescent Proteins ; Nerve Growth Factors ; Green Fluorescent Proteins (147336-22-9)
    Language Chinese
    Publishing date 2004-01
    Publishing country China
    Document type English Abstract ; Journal Article
    ZDB-ID 604574-1
    ISSN 0412-4081
    ISSN 0412-4081
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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