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Precise region semantics-assisted GAN for pose-guided person image generation

CAAI Transactions on Intelligence Technology 2024年第3期9卷 665-678页

作者： Ji Liu Zhenyu Weng Yuesheng Zhu Communication and Information Security lab Shenzhen Graduate SchoolPeking UniversityShenzhenChina School of Electrical and Electronic Engineering Nanyang Technological UniversitySingaporeSingapore

Generating a realistic person's image from one source pose conditioned on another different target pose is a promising computer vision *** previous mainstream methods mainly focus on exploring the transformation relationship between the keypoint-based source pose and the target pose,but rarely investigate the region-based human semantic *** current methods that adopt the parsing map neither consider the precise local pose-semantic matching issues nor the correspondence between two different *** this study,a Region Semantics-Assisted Generative Adversarial Network(RSA-GAN)is proposed for the pose-guided person image gen-eration *** particular,a regional pose-guided semantic fusion module is first devel-oped to solve the imprecise match issue between the semantic parsing map from a certain source image and the corresponding keypoints in the source *** well align the style of the human in the source image with the target pose,a pose correspondence guided style injection module is designed to learn the correspondence between the source pose and the target *** addition,one gated depth-wise convolutional cross-attention based style integration module is proposed to distribute the well-aligned coarse style information together with the precisely matched pose-guided semantic information to-wards the target *** experimental results indicate that the proposed RSA-GAN achieves a 23%reduction in LPIPS compared to the method without using the seman-tic maps and a 6.9%reduction in FID for the method with semantic maps,respectively,and also shows higher realistic qualitative results.

关键词： deep learning image processing

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Robust zero-watermarking algorithm based on discrete wavelet transform and daisy descriptors for encrypted medical image

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CAAI Transactions on Intelligence Technology 2024年第1期9卷 40-53页

作者： Yiyi Yuan Jingbing Li Jing Liu Uzair Aslam Bhatti Zilong Liu Yen-wei Chen School of Information and Communication Engineering Hainan UniversityHaikouChina Research Center for Healthcare Data Science Zhejiang LabHangzhouChina graduate School of Information Science and Engineering Ritsumeikan University ShigaJapan

In the intricate network environment,the secure transmission of medical images faces challenges such as information leakage and malicious tampering,significantly impacting the accuracy of disease diagnoses by medical *** address this problem,the authors propose a robust feature watermarking algorithm for encrypted medical images based on multi-stage discrete wavelet transform(DWT),Daisy descriptor,and discrete cosine transform(DCT).The algorithm initially encrypts the original medical image through DWT-DCT and Logistic ***,a 3-stage DWT transformation is applied to the encrypted medical image,with the centre point of the LL3 sub-band within its low-frequency component serving as the sampling *** Daisy descriptor matrix for this point is then ***,a DCT transformation is performed on the Daisy descriptor matrix,and the low-frequency portion is processed using the perceptual hashing algorithm to generate a 32-bit binary feature vector for the medical *** scheme utilises cryptographic knowledge and zero-watermarking technique to embed watermarks without modifying medical images and can extract the watermark from test images without the original image,which meets the basic re-quirements of medical image *** embedding and extraction of water-marks are accomplished in a mere 0.160 and 0.411s,respectively,with minimal computational *** results demonstrate the robustness of the algorithm against both conventional attacks and geometric attacks,with a notable performance in resisting rotation attacks.

关键词： daisy descriptor DCT DWT encryption domain medical image zero-watermarking

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Quantum Tunneling Enhanced Hydrogen Desorption from Graphene Surface: Atomic versus Molecular Mechanism

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Chinese Physics Letters 2024年第8期41卷 58-68页

作者： Yangwu Tong Yong Yang Science Island Branch of graduate School University of Science and Technology of ChinaHefei 230026China Key lab of Photovoltaic and Energy Conservation Materials Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China

We study the desorption mechanism of hydrogen isotopes from graphene surface using first-principles calculations,with focus on the effects of quantum *** low temperatures,quantum tunneling plays a dominant role in the desorption process of both hydrogen monomers and *** the case of dimer desorption,two types of mechanisms,namely the traditional one-step desorption in the form of molecules(molecular mechanism),and the two-step desorption in the form of individual atoms(atomic mechanism),are studied and *** the ortho-dimers,the dominant desorption mechanism is found to switch from the molecular mechanism to the atomic mechanism above a critical temperature,which is∼300K and 200K for H and D,respectively.

关键词： desorption quantum mechanism

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Interplay between mesenchymal stem cells and macrophages:Promoting bone tissue repair

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World Journal of Stem Cells 2024年第4期16卷 375-388页

作者： Fei-Fan Zhang Yang Hao Kuai-Xiang Zhang Jiang-Jia Yang Zhi-Qiang Zhao Hong-Jian Liu Ji-Tian Li Molecular Biology lab Henan Luoyang Orthopedic Hospital(Henan Provincial Orthopedic Hospital)Zhengzhou 450000Henan ProvinceChina graduate School Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina graduate School Henan University of Chinese MedicineZhengzhou 450046Henan ProvinceChina Department of Orthopaedics The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina

The repair of bone tissue damage is a complex process that is well-orchestrated in time and space,a focus and difficulty in orthopedic *** recent years,the success of mesenchymal stem cells(MSCs)-mediated bone repair in clinical trials of large-area bone defects and bone necrosis has made it a candidate in bone tissue repair engineering and regenerative *** are closely related to *** one hand,MSCs regulate the immune regulatory function by influencing macrophages proliferation,infiltration,and phenotype polarization,while also affecting the osteoclasts differentiation of *** the other hand,macrophages activate MSCs and mediate the multilineage differentiation of MSCs by regulating the immune *** cross-talk between MSCs and macrophages plays a crucial role in regulating the immune system and in promoting tissue *** full use of the relationship between MSCs and macrophages will enhance the efficacy of MSCs therapy in bone tissue repair,and will also provide a reference for further application of MSCs in other diseases.

关键词： Bone tissue damage Inflammation Macrophages Mesenchymal stem cells Tissue regeneration

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Body-Shaping Membrane to Regenerate Breast Fat by Elastic Structural Holding

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Research 2024年第1期2023卷 165-180页

作者： Hye-Seon Kim Jeongeun Park Hyun-Su Ha Sewoom Baek Chan Hee Lee Kyubae Lee Suji Park Jueun Kim Se Won Yi Hak-Joon Sung Department of Medical Engineering Graduate School of Medical ScienceBrain Korea 21 ProjectYonsei University College of MedicineSeoul 03722Republic of Korea TMD lab Co.Ltd. 6th Floor31Gwangnaru-ro 8-gilSeongdong-guSeoul 04799Republic of Korea

Tissue regeneration requires structural holding and movement support using tissue-type-specific aids such as bone casts,skin bandages,and joint ***,an unmet need exists in aiding breast fat regeneration as the breast moves following continuous body motion by exposing the breast fat to dynamic ***,the concept of elastic structural holding is applied to develop a shape-fitting moldable membrane for breast fat regeneration(“adipoconductive”)after surgical defects are *** membrane has the following key characteristics:(a)It contains a panel of honeycomb structures,thereby efficiently handling motion stress through the entire membrane;(b)a strut is added into each honeycomb in a direction perpendicular to gravity,thereby suppressing the deformation and stress concentration upon lying and standing;and(c)thermo-responsive moldable elastomers are used to support structural holding by suppressing large deviations of movement that occur *** elastomer became moldable upon a temperature shift above T_(m).The structure can then be fixed as the temperature *** a result,the membrane promotes adipogenesis by activating mechanotransduction in a fat miniature model with pre-adipocyte spheroids under continuous shaking in vitro and in a subcutaneous implant placed on the motion-prone back areas of rodents in vivo.

关键词： thereby shaking Elastic

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Enhancing Offensive Language Detection with Data Augmentation and Knowledge Distillation

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Research 2024年第2期6卷 29-40页

作者： Jiawen Deng Zhuang Chen Hao Sun Zhexin Zhang Jincenzi Wu Satoshi Nakagawa Fuji Ren Minlie Huang The CoAl group DCSTInstitute for Artificial InteligenceState Key Lab of Intelligent Technology and SystemsBeijing National Research Center for Information Science and TechnologyTsinghua UniversityBeijing 100084China graduate School of Information Science&Technology The University of Tokyo.Tokyo 1138654Japan School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengduSichuan611731China

Offensive language detection has received important attention and plays a crucial role in promoting healthy communication on social platforms,as well as promoting the safe deployment of large language *** data is the basis for developing detectors;however,the available offense-related dataset in Chinese is severely limited in terms of data scale and coverage when compared to English *** significantly affects the accuracy of Chinese offensive language detectors in practical applications,especially when dealing with hard cases or out-of-domain *** alleviate the limitations posed by available datasets,we introduce AugCOLD(Augmented Chinese Offensive Language Dataset),a large-scale unsupervised dataset containing 1 million samples gathered by data crawling and model ***,we employ a multiteacher distillation framework to enhance detection performance with unsupervised *** is,we build multiple teachers with publicly accessible datasets and use them to assign soft labels to *** soft labels serve as a bridge for knowledge to be distilled from both AugCOLD and multiteacher to the student network,i.e.,the final offensive *** conduct experiments on multiple public test sets and our well-designed hard tests,demonstrating that our proposal can effectively improve the generalization and robustness of the offensive language detector.

关键词： COLD dealing limitations

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The deterministic condition for the ground reaction force acting point on the combined knee valgus and tibial internal rotation moments in early phase of cutting maneuvers in female athletes

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Journal of Sport and Health Science 2024年第3期13卷 376-386页

作者： Issei Ogasawara Ken Ohta Gajanan S.Revankar Shoji Konda Yohei Shimokochi Hideyuki Koga Ken Nakata Department of Health and Sport Sciences Graduate School of MedicineOsaka UniversityToyonaka 560-0043Japan Sports Sensing Co. LTD.Fukuoka 815-0035Japan Department of Neurology Graduate School of MedicineOsaka UniversitySuita 565-0871Japan Department of Health and Sport Management Osaka University of Health and Sport SciencesSennan-gun 590-0496Japan Department of Joint Surgery and Sports Medicine Graduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityBunkyo-ku 113-8519Japan

Background:Combined knee valgus and tibial internal rotation(VL+IR)moments have been shown to stress the anterior cruciate ligament(ACL)in several in vitro cadaveric *** utilize this knowledge for non-contact ACL injury prevention in sports,it is necessary to elucidate how the ground reaction force(GRF)acting point(center of pressure(CoP))in the stance foot produces combined knee VL+IR moments in risky maneuvers,such as ***,the effects of the GRF acting point on the development of the combined knee VL+IR moment in cutting are still ***:We first established the deterministic mechanical condition that the CoP position relative to the tibial rotational axis differentiates the GRF vector’s directional probability for developing the combined knee VL+IR moment,and theoretically predicted that when the CoP is posterior to the tibial rotational axis,the GRF vector is more likely to produce the combined knee VL+IR moment than when the CoP is anterior to the tibial rotational ***,we tested a stochastic aspect of our theory in a lab-controlled in vivo *** females performed 60˚cutting under forefoot/rearfoot strike conditions(10 trials each).The positions of lower limb markers and GRF data were measured,and the knee moment due to GRF vector was *** trials were divided into anterior-and posterior-CoP groups depending on the CoP position relative to the tibial rotational axis at each 10 ms interval from 0 to 100 ms after foot strike,and the occurrence rate of the combined knee VL+IR moment was compared between trial ***:The posterior-CoP group showed significantly higher occurrence rates of the combined knee VL+IR moment(maximum of 82.8%)at every time point than those of the anterior-CoP trials,as theoretically predicted by the deterministic mechanical ***:The rearfoot strikes inducing the posterior CoP should be avoided to reduce the risk of non-contact ACL injury associated with the com

关键词： Center of pressure Deterministic condition Foot strike pattern Injury mechanism Moment of ground reaction force

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Semantic knowledge graph as a companion for catalyst recommendation

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National Science Open 2024年第2期3卷 46-55页

作者： Zhiying Zhang Shengming Ma Shisheng Zheng Zhiwei Nie Bingxu Wang Kai Lei Shunning Li Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China Shenzhen Key lab for Information Centric Networking and Blockchain Technology(ICNlab) Peking University Shenzhen Graduate SchoolShenzhen 518055China

Our ability to perceive the correlation of different substances in the world is one of the key aspects of human *** passing of this faculty to artificial intelligence(AI)represents arguably one of the long-standing challenges in the application of AI to scientific *** meet this challenge in the burgeoning field of AI for chemistry,we may adopt the paradigm of knowledge ***,focusing on catalytic chemical reactions,we have developed a semantic knowledge graph framework based on both structured and unstructured data,the latter of which are extracted from the text of 220,000articles on catalysts for organic *** framework captures the latent knowledge of reactant-catalyst-product relationships and can therefore provide accurate recommendation on potential catalysts for targeted reaction,which especially facilitates the research involving large *** study presents a viable pathway towards the implementation of literature-based data management in a catalyst recommendation platform.

关键词： knowledge graph text mining catalysts organic molecules natural language processing

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具有高温度敏感常数B值的超高灵敏金刚石薄膜负温度系数热敏电阻器件（英文）

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Science China Materials 2024年

作者：陈巧赵艺梦李佳炜刘惜缘王欣悦张文曦朱宏伟 Gemmological Institute China University of Geosciences Shenzhen Research Institute China University of Geosciences State Key lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Southwest United graduate School

基于负温度系数（NTC）热敏电阻的精准温度信息监测在现代科学研究及工程应用领域中至关重要.尽管目前NTC材料的敏感性能已取得显著提高,但在较宽的探测温度范围内保持高灵敏度和良好的线性度仍然面临巨大挑战.本文报道了一种具备超高...

基于负温度系数（NTC）热敏电阻的精准温度信息监测在现代科学研究及工程应用领域中至关重要.尽管目前NTC材料的敏感性能已取得显著提高,但在较宽的探测温度范围内保持高灵敏度和良好的线性度仍然面临巨大挑战.本文报道了一种具备超高灵敏度、超快响应速度和较宽温域探测能力的金刚石热敏电阻器件,在室温（30℃）至300℃的工作温度范围内,展现出极高的温度敏感常数B值(B30/300),高达8012 K.其灵敏度明显超过现有报道的同温区NTC热敏电阻.此外,金刚石优异的热导率和化学稳定性显著提高了其热敏电阻器件的响应速度和耐久性,相较于传统热敏材料具备显著的应用优势.通过表征分析发现,金刚石热敏电阻的超高灵敏度与晶界杂质元素密切相关.结合变温阻抗谱分析和霍尔效应测试,推测其热敏导电机制主要基于C-H/C-N偶极子的跳跃导电.本研究在金刚石NTC热敏技术方面所取得的进展,将为推动新型金刚石温度敏感电子器件的应用及发展提供了有力支持.

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Mechanism of modified Chaihu Shugan formula in the treatment of epilepsy based on IncRNA-UCA1/miR-187/MAPK8 pathway

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China Medical Abstracts(Internal Medicine) 2024年第1期41卷 13-14页

作者：李瑞暖 Guangxi Molec Biol Key lab TCM Prev&TreatGraduate SchGuangxi TCM UnivNanning 530023

Objective To observe the effects of Modified Chaihu Shugan Formula (MCSF) on the behavior of epileptic mice and their regulatory effects on long noncoding RNAUCA1(lncRNA-UCA1),microRNA-187(miR-187) and recombinant mitogen activated protein kinase 8(MAPK8).Methods Totally 80 mice were randomly divided into normal group,model group (pilocarpine hydrochloride 180 mg/kg).

关键词： epilepsy Chaihu UCA1

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