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Rethinking Global Context in Crowd Counting

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Machine Intelligence Research 2024年第4期21卷 640-651页

作者： Guolei sun yun Liu Thomas Probst Danda Pani Paudel Nikola Popovic Luc Van Gool Computer Vision Lab ETH ZürichZürich 8092Switzerland Institute for Infocomm Research A*STARSingapore 138632Singapore Magic Leap Zürich 8050Switzerland

This paper investigates the role of global context for crowd ***,a pure transformer is used to extract features with global information from overlapping image *** by classification,we add a context token to the input sequence,to facilitate information exchange with tokens corresponding to image patches throughout transformer *** to the fact that transformers do not explicitly model the tried-and-true channel-wise interactions,we propose a token-attention module(TAM)to recalibrate encoded features through channel-wise attention informed by the context *** that,it is adopted to predict the total person count of the image through regression-token module(RTM).Extensive experiments on various datasets,including ShanghaiTech,UCFQNRF,JHU-CROWD++and NWPU,demonstrate that the proposed context extraction techniques can significantly improve the performanceover the baselines.

关键词： Crowd counting vision transformer global context attention density map.

Multiple thermal events recorded in the Acasta Gneiss Complex:Evidence from in-situ dating of zircon, titanite, and apatite

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Science China Earth Sciences 2024年第3期67卷 673-686页

作者： Qingfeng MEI Jinhui YANG Jinfeng sun Qiuli LI Shitou WU Xiaoxiao ling Peng PENG Hao WANG State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesBeijing 100049China

In-situ dating of the zircons, titanites, and apatites in the rock fragments of approximately 1 cm2in size from the Acasta Gneiss Complex was performed using secondary ion mass spectrometry or laser ablation inductively coupled plasma mass spectrometry to provide constraints on the thermal history of the Acasta Gneiss Complex. The zircons in these rock fragments typically exhibit multiple age populations, reflecting the presence of inherited zircons or the post-crystallization process of zircon overgrowth. Combined with previous studies, our zircon dating results reveal multiple magmatic events that occurred in the Acasta Gneiss Complex, specifically at >3.96, ~3.72, and ~3.57 Ga, respectively. A titanite Pb-Pb isochron age of2911±22 Ma(95% confidence level, MSWD=1.5) for sample AY199 is identified, consistent with the timing of the latest Archean magmatism in the Acasta Gneiss Complex. The titanite U-Pb ages for samples AC478 and AY066 are 1932±270 Ma(95% confidence level, MSWD=2.3) and 1813±45 Ma(95% confidence level, MSWD=2.3), respectively. The apatites in sample P090803-C exhibit a Pb-Pb isochron age of 1833±26 Ma(95% confidence level, MSWD=1.4). The apatite U-Pb ages for samples AC478, AY199, and AY066 are 1850±20 Ma(95% confidence level, MSWD=1.3), 1827±100 Ma(95% confidence level, MSWD=6.3), and 1807±58 Ma(95% confidence level, MSWD=3.9), respectively. Titanites in samples AC478 and AY066, as well as the apatites in all four investigated samples, show a uniform age(Pb-Pb or U-Pb age) of ~1.9–1.8 Ga,indicating U-Pb system reset in these minerals due to the Wopmay orogeny and documenting that the peak temperature condition associated with the Wopmay orogeny exceeded the apatite U-Pb closure temperature and approached or exceeded that of titanite.

关键词： Zircon Titanite Apatite Acasta Gneiss Complex Wopmay Orogen

Efficient removal of tetracycline hydrochloride through novel Fe/BiOBr/Bi_(2)WO_(6) photocatalyst prepared by dual-strategy under visible-light irradiation

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Journal of Environmental Sciences 2024年第4期138卷 46-61页

作者： Guanlong Yu Kai Yang Yi Yang Yifu Li Qifang sun Peiyuan Li Wenming Wang Fengming Song Tao ling Xuejun Peng Zhi Yu Shiquan sun School of Hydraulic and Environmental Engineering Changsha University of Science&TechnologyChangsha 410114China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha 410114China Hunan Pilot Yanghu Reclaimed Water Co. Ltd.Changsha 410208China China Railway Wuju Group the First Engineering Co. Ltd.Changsha 410117China

It is important to investigate whether combining two modification strategies has a synergistic effect on the activity of *** this manuscript,Fe-doped BiOBr/Bi_(2)WO_(6) heterojunctions were synthesized by a one-pot solvothermal method,and excellent photocatalytic performance was obtained for the degradation of tetracycline hydrochloride(TCH)in water without the addition of *** experiments and characterization,the synergistic effect between Fe ion doping and the BiOBr/Bi_(2)WO_(6) heterojunction was *** Fe/BiOBr/Bi_(2)WO_(6) composite photocatalyst had a beneficial void structure,enhanced visible light response,and could inhibit the recombination of photogenerated support well,which improved the photocatalytic *** presented experiments demonstrate that Fe/BiOBr/Bi_(2)WO_(6) removes 97% of TCH from aqueous solution,while pure BiOBr and Bi_(2)WO_(6) only remove 56% and 65% of TCH,***,the separation and transfer mechanisms of photoexcited carriers were determined in conjunction with the experimental *** study provides a new direction for the design of efficient photocatalysts through the use of a dual co-modification strategy.

关键词： BiOBr/Bi_(2)WO_(6) Fe-doping Dual strategy Tetracycline hydrochloride Photodegradation

Understanding the cooperative effects in the catalysis of homodimeric fluoroacetate dehalogenase

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Science China Chemistry 2024年第7期67卷 2382-2391页

作者： Ke-Wei Chen Jia-Nan Chen Jun Zhang Chao Wang Tian-Yu sun yun-Dong Wu Key Laboratory of Computational Chemistry and Drug Design State Key Laboratory of Chemical OncogenomicSchool of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate SchoolShenzhen 518055China Institute of Chemical Biology Shenzhen Bay LaboratoryShenzhen 518132China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China Changping Laboratory Beijing 102200China

Fluoroacetate dehalogenases(FAcD),a homodimeric enzyme,catalyzes the conversion of fluoroacetic acid to glycolic acid(GoA).It has been proved that the enzyme has a half-of-the-site ***,its catalytic(C)subunit converts the first substrate to a covalent intermediate;then,the non-catalytic(NC)subunit binds a second substrate and promotes the conversion of the intermediate in the C subunit into the final *** the release of the product,the C subunit becomes the NC subunit,and the previous NC subunit becomes the C *** elucidate the detailed mechanism behind this cooperative catalysis,we have conducted microsecond-scale MD simulations along the reaction *** simulations indicate that the substrate in the NC subunit induces W185 and Y141 adopting an open conformation in the C *** opening of W185(C)facilitates the entry of catalytic water,enhancing the catalytic activity for product formation,while the opening of Y141(C)creates an unfavorable environment for product binding,promoting its *** interaction network analysis reveals that the substrate in the NC subunit can induce conformational changes through a conserved water chain at the interface.

关键词： enzyme catalysis molecular dynamics cooperative effect pre-reaction state

The Boundedness of the Pullback Attractor for a 2D Micropolar Fluid Flows

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Acta Mathematicae Applicatae Sinica 2024年

作者： Wen-long sun Chun-lin LAI yun-yun LIANG School of information and mathematics Yangtze University

The purpose of this work is to investigate the boundedness of the pullback attractors for the micropolar fluid flows in two-dimensional unbounded domains. Exactly, the H1-boundedness and H2-boundedness of the pullback attractors are established when the external force F (t, x) has different regularity with respect to time variable, respectively.

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可穿戴计算设备中振动表情的设计与应用

浙江大学学报（工学版） 2015年第12期49卷 2298-2304页

作者：陈实郑楷洪孙凌云李彦浙江大学现代工业设计研究所浙江杭州310027

针对由振动产生的触觉刺激,研究在可穿戴计算设备中利用振动信号表达情感的可能性.在分析触觉刺激、触觉表达、振动参数等内容的基础上,通过改变振动的强度、节奏与时长,设计出6种振动模式,分别对应愤怒、害怕、搞笑、悲伤、厌恶和惊奇... 详细信息

针对由振动产生的触觉刺激,研究在可穿戴计算设备中利用振动信号表达情感的可能性.在分析触觉刺激、触觉表达、振动参数等内容的基础上,通过改变振动的强度、节奏与时长,设计出6种振动模式,分别对应愤怒、害怕、搞笑、悲伤、厌恶和惊奇这6种基本情感,并将这6种振动模式称为振动表情.将振动表情应用在可穿戴计算设备常作用的手指、手腕、上臂和脚踝这4个部位上,并通过比较振动表情在各部位的识别率确定被试能否在各部位准确识别出每一种振动模式所代表的情感.设计一款可穿戴式振动指环,探讨在远程通信场景下振动表情对于情感表达的作用,以评估振动表情的有效性.结果表明:在可穿戴计算设备中引入振动表情,通过振动刺激表达情感信息,可以有效提高情感识别的准确性,增强情感感知强度.可考虑在可穿戴计算设备中引入振动表情,将情感特征以振动的形式表现出来,从而提高情感传递的效率.

关键词：情感表达可穿戴计算设备振动表情触觉表达情感识别

Validating the use of ROS-scavenging bacteria as probiotics to increase coral resilience to thermal stress

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Journal of Oceanology and Limnology 2024年第4期42卷 1242-1260页

作者： Xiaoyu TANG Qingsong YANG Ying ZHANG Hanzhang WANG Juan ling Haiyan sun Junde DONG Yanying ZHANG CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of Oceanology(SCSIO)Guangzhou 510301China Ocean School Yantai UniversityYantai 264005China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Sanya National Marine Ecosystem Research Station and Key Laboratory of Tropical Marine Biotechnology of Hainan Province Sanya Institute of OceanologySCSIOSanya 572000China Institute of Deep-sea Science and Engineering Chinese Academy of SciencesSanya 572000China University of Chinese Academy of Sciences Beijing 100049China

Thermal stress causes the overproduction and toxic accumulation of reactive oxygen species(ROS),which seems to be correlated with coral bleaching and,ultimately,*** reduction of ROS concentration within the coral holobiont could minimize the effects of thermal stress and support efforts to reduce coral decline *** the current study,we explored the physiological responses of Pocillopora damicornis to ROS-scavenging bacteria inoculation as well as the microbiome restructuring that correlates with ***’s resilience to thermal stress after probiotic *** of corals with ROS-scavenging bacteria enhanced coral health and reduced ROS ***,the enhanced coral thermal resistance promoted by ROS-scavenging bacteria was also correlated with an overall coral microbiome *** addition,the complex network relationships between bacteria and Symbiodiniaceae in corals after ROS-scavenging bacteria inoculation contributed to corals’resilience to high ***,coral heat tolerance bacterial biomarkers,such as Myxococcota,were enriched in corals with added ROS-scavenging ***,our findings validate the selected ROS-scavenging bacteria as coral probiotics that could help corals resist thermal stress on a short ***,our data contribute to our understanding of the potential interactions between different members of the coral holobiont and the use of probiotics as tools to aid coral restoration efforts.

关键词： coral beneficial microorganisms for corals(BMCs) Symbiodiniaceae thermal stress coral bleaching

Arginine methylation of ALKBH5 by PRMT6 promotes breast tumorigenesis via LDHA-mediated glycolysis

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Frontiers of Medicine 2024年第2期18卷 344-356页

作者： Xue Han Chune Ren Aifang Jiang Yonghong sun Jiayi Lu Xi ling Chao Lu Zhenhai Yu Department of Reproductive Medicine Affiliated Hospital of Weifang Medical UniversityWeifang261053China Department of Pathology Affiliated Hospital of Weifang Medical UniversityWeifang261053China

ALKBH5 is a master regulator of N6-methyladenosine(m6A)modification,which plays a crucial role in many biological ***,we show that ALKBH5 is required for breast tumor ***,PRMT6 directly methylates ALKBH5 at R283,which subsequently promotes breast tumor ***,arginine methylation of ALKBH5 by PRMT6 increases LDHA RNA stability via m6A demethylation,leading to increased aerobic ***,PRMT6-mediated ALKBH5 arginine methylation is confirmed in PRMT6-knockout ***,these findings identify a PRMT6-ALKBH5-LDHA signaling axis as a novel target for the treatment of breast cancer.

关键词： PRMT6 ALKBH5 N6-methyladenosine glycolysis tumor growth

正清风痛宁片联合甲氨蝶呤对胶原诱导的关节炎大鼠血清OPG/RANKL、IL-17的影响

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中国中西医结合杂志 2013年第2期33卷 256-260页

作者：丁从珠姚瑶方芸孙凌云汪悦南京中医药大学中西结合鼓楼临床医学院风湿免疫科南京210008 南京中医药大学中西结合鼓楼临床医学院药学部南京210008 南京中医药大学第一临床医学院南京210029

目的探讨正清风痛宁片联合甲氨蝶呤(MTX)对胶原诱导的关节炎(CIA)大鼠血清骨保护素(OPG)、核周因子κB受体活化因子配体(RANKL)、白细胞介素17(IL-17)的作用,了解其联合治疗的骨保护作用。方法于大鼠背部皮内、尾根注射Ⅱ型胶原乳剂建立... 详细信息

目的探讨正清风痛宁片联合甲氨蝶呤(MTX)对胶原诱导的关节炎(CIA)大鼠血清骨保护素(OPG)、核周因子κB受体活化因子配体(RANKL)、白细胞介素17(IL-17)的作用,了解其联合治疗的骨保护作用。方法于大鼠背部皮内、尾根注射Ⅱ型胶原乳剂建立CIA大鼠模型,选取造模成功且关节炎指数(AI)>2分的大鼠28只,随机分为模型组、中药组、MTX组、联合组,每组7只,另选取7只作为正常对照组。造模后7天开始灌胃给药,MTX组予MTX(3.8mg/kg)每周1次;中药组予正清风痛宁片[130mg/(kg·d)];联合组予正清风痛宁片[130mg/(kg·d)]和MTX(3.8mg/kg)每周1次;模型组与正常对照组予等体积生理盐水灌胃,各组均干预26天。采用X线摄片观察大鼠四肢关节破坏情况,记录大鼠AI评分,实验结束后检测各组大鼠血清OPG、RANKL、IL-17表达水平。结果实验过程中,除模型组外,其余大鼠状态良好。造模第21天,各组大鼠AI评分均达到峰值,干预后各组AI评分均降低,与模型组比较,干预第26天中药组、MTX组、联合组AI评分降低,差异有统计学意义(P<0.05)。与模型组比较,MTX组干预后OPG、RANKL降低,中药组OPG升高,OPG/RANKL升高,联合组OPG、RANKL及OPG/RANKL升高,IL-17降低,差异均有统计学意义(P<0.05)。与MTX及中药组比较,联合组OPG/RANKL升高(P<0.05),IL-17降低(P<0.05)。结论正清风痛宁片联合MTX能够协同提高CIA模型大鼠外周血OPG/RANKL,下调IL-17。

关键词：类风湿关节炎胶原诱导的关节炎骨保护素核因子-κB活化因子配体正清风痛宁片甲氨蝶呤