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Antagonistic MADS-box transcription factors SEEDSTICK and SEPALLATA3 form a transcriptional regulatory network that regulates seed oil accumulation

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Journal of Integrative Plant Biology 2024年第1期66卷 121-142页

作者： Shuangcheng He Yuanchang Min zijin Liu Fang zhi Rong Ma Ankang Ge Shixiang Wang Yu zhao Danshuai peng Da zhang Minshan Jin Bo Song Jianjun Wang Yuan Guo Mingxun Chen State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production National Yangling Agricultural Biotechnology&Breeding CenterShaanxi Key Laboratory of Crop HeterosisCollege of AgronomyNorthwest A&F UniversityYangling 712100China State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYangling 712100China

Transcriptional regulation is essential for balancing multiple metabolic pathways that influence oil accumulation in *** far,the transcriptional regulatory mechanisms that govern seed oil accumulation remain largely ***,we identified the transcriptional regulatory network composed of MADS-box transcription factors SEEDSTICK(STK)and SEPALLATA3(SEP3),which bridges several key genes to regulate oil accumulation in *** found that STK,highly expressed in the developing embryo,positively regulates seed oil accumulation in Arabidopsis(Arabidopsis thaliana).Furthermore,we discovered that SEP3 physically interacts with STK in vivo and in *** oil content is increased by the SEP3 mutation,while it is decreased by SEP3 *** chromatin immunoprecipitation,electrophoretic mobility shift assay,and transient dual-luciferase reporter assays showed that STK positively regulates seed oil accumulation by directly repressing the expression of MYB5,SEP3,and SEED FATTY ACID REDUCER 4(SFAR4).Moreover,genetic and molecular analyses demonstrated that STK and SEP3 antagonistically regulate seed oil production and that SEP3 weakens the binding ability of STK to MYB5,SEP3,and ***,we demonstrated that TRANSPARENT TESTA 8(TT8)and ACYL-ACYL CARRIER PROTEIN DESATURASE 3(AAD3)are direct targets of MYB5 during seed oil accumulation in ***,our findings provide the transcriptional regulatory network antagonistically orchestrated by STK and SEP3,which fine tunes oil accumulation in seeds.

关键词： seed oil accumulation SEP3 STK transcription factor transcriptional regulation

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Converting intercalation-type cathode in spent lithium-ion batteries into conversion-type cathode

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Nano Research 2024年第5期17卷 4602-4609页

作者： Dingding zhu Yong Su Jingzhao Chen Xiangze Ou Xuedong zhang Wen Xie Yuyan zhou Yunna Guo Qiushi Dai peng Jia Jitong Yan Lin Geng Baiyu Guo Liqiang zhang Yongfu Tang Qiao Huang Jianyu Huang School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066000China

The widespread applications of lithium-ion batteries(LIBs)generate tons of spent ***,recycling LIBs is of paramount importance in protecting the environment and saving the *** commercialized LIBs mostly adopt layered oxides such as LiCoO_(2)(LCO)or LiNi_(x)Co_(y)Mn_(1-x-y)O_(2)(NMC)as the cathode *** the intercalation-type spent oxides into conversion-type cathodes(such as metal fluorides(MFs))offers a valid recycling strategy and provides substantially improved energy densities for ***,two typical Co-based cathodes,LCO and LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NMC622),in spent LIBs were successfully converted to CoF_(2) and(Ni_(x)Co_(y)Mn_(z))F_(2) cathodes by a reduction and fluorination *** as converted CoF_(2) and(Ni_(x)Co_(y)Mn_(z))F_(2) delivered cell energy densities of 650 and 700 Wh/kg,*** atomic-level electron microscopy revealed that the used LCO and NMC622 were converted to highly phase pure Co metal and Ni_(0.6)Co_(0.2)Mn_(0.2) alloys in the used graphite-assisted reduction roasting,simultaneously producing the important product of Li_(2)CO_(3) using only environment friendly *** study provided a versatile strategy to convert the intercalation-type Co-based cathode in the spent LIBs into conversion-type MFs cathodes,which offers a new avenue to recycle the spent LIBs and substantially increase the energy densities of next generation LIBs.

关键词： spent lithium-ion batteries recycling energy densities conversion-type cathode

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某污染地块合成麝香在土壤中的分布特性及修复技术研究

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应用基础与工程科学学报 2024年第1期32卷 20-30页

作者：张坤张杰西王钪籍龙杰孙斌王亚晨刘鹏李静文北京建工环境修复股份有限公司北京100015 污染场地安全修复技术国家工程实验室北京100015

合成麝香(Synthetic Musks, SMs)是一类在环境中难降解、易产生生物蓄积作用的半挥发性有机污染物,可通过各种环境介质迁移转化,已严重威胁到生态系统安全及人体健康.对于SMs去除途径的研究目前主要聚焦在水处理领域,土壤治理方面鲜有报... 详细信息

合成麝香(Synthetic Musks, SMs)是一类在环境中难降解、易产生生物蓄积作用的半挥发性有机污染物,可通过各种环境介质迁移转化,已严重威胁到生态系统安全及人体健康.对于SMs去除途径的研究目前主要聚焦在水处理领域,土壤治理方面鲜有报道.本研究对国内某污染地块SMs在土层中的空间分布及富集特征开展分析,发现SMs在水平方向上高浓度污染源的迁移能力更强,而在垂向上呈现先增加后减少、并在粉质黏土层富集的现象.选取化学氧化、异位热脱附、水泥窑协同处置3种代表性修复技术,通过试验探索SMs污染土壤修复技术的关键工艺参数.研究结果表明,部分SMs可以被化学氧化,但氧化后的浓度仍高于以检出限0.1mg/kg确定的“风险控制值”;SMs热脱附效率随加热温度的升高呈先显著增加、后趋于平稳,持续升温在提升修复效果的同时会造成经济成本的增加;水泥窑协同处置技术是确保SMs污染土壤修复达标、且实现资源化利用的一种有效途径.最后,结合目前SMs污染物尚无法律法规和标准予以规定的现状,对检测方法、风险评估方法、治理模式提出了展望.

关键词：合成麝香迁移转化空间分布去除途径土壤修复

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Novel Role of Calcium-Sensitive Receptors in Chronic Hypoxia-Induced Proliferation of Pulmonary Vein Smooth Muscle Cells

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Journal of Clinical and Nursing Research 2024年第7期8卷 349-355页

作者： Shaoxing Li Jurong zhang zhuandi Lin zhiming Xiang Gongyong peng The Affiliated Panyu Central Hospital of Guangzhou Medical University Guangzhou 510120Guangdong ProvinceChina The First Affiliated Hospital of Guangzhou Medical University Guangzhou 510120Guangdong ProvinceChina

Objective:Vascular remodeling due to chronic hypoxia(CH)occurs not only in the pulmonary arteries but also in the pulmonary *** vascular remodeling arises from the proliferation of pulmonary vascular ***,the mechanism by which CH induces the proliferation of pulmonary vein smooth muscle cells(PVSMCs)is *** study aimed to investigate the mechanism by which CH affects the proliferation of ***:PVSMCs were isolated from rat distal pulmonary veins and exposed to CH(4%O2,60h),and the expression of the calcium-sensitive receptor(CaSR)was detected by Western blotting and *** assay was used to detect the proliferation viability of the cells,and the changes in the intracellular calcium concentration were detected by laser confocal scanning ***:CaSR expression was present in rat distal PVSMCs,and CaSR protein expression was upregulated under *** positive regulator spermine not only enhanced CH-induced CaSR upregulation but also enhanced CH-induced increase in cell viability and calcium ion *** negative CaSR regulator NPS2143 not only attenuated CH-induced CaSR upregulation but also inhibited CH-induced cell viability and calcium ion ***:CaSR-mediated hyperproliferation is a novel pathogenic mechanism for the development of proliferation in distal PVSMCs under CH conditions.

关键词： Hypoxia Calcium-sensitive receptor(CaSR) Pulmonary hypertension Cell proliferation Calcium ions

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Targeting HMGCS1 restores chemotherapy sensitivity in acute myeloid leukemia

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Blood Science 2024年第3期6卷 11-22页

作者： Cheng zhou Jue Li Xiaofan Sun Liang zhao Huien zhan Hui Liang peng Fang Tuo zhang Qiongzhi He Juan Du Hui zeng Department of Hematology The First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong 510630China Department of Hematology Xiangya HospitalCentral South UniversityChangshaHunan 410008China Genomic Core Weill Cornell Medical CollegeNew YorkNY 10021USA Geneplus-Beijing Institute Beijing 102206China

Acute myeloid leukemia(AML)is a common hematological malignancy with overall poor *** novel targets is urgent and necessary to improve the clinical outcome of relapsed and refractory(RR)AML *** clinical specimens,animal models and cell-level studies,we explored the specific mechanism of 3-hydroxy-3-methylglutaryl coenzyme A synthase 1(HMGCS1)in AML and the mechanism of targeting HMGCS1 to attenuate cell proliferation,increase chemotherapy sensitivity and improve the occurrence and development of ***,we reveal that HMGCS1 is overexpressed in RR patients and negatively related to overall survival(OS).Knocking out HMGCS1 in AML cells attenuated cell proliferation and increased chemotherapy sensitivity,while stable overexpression of HMGCS1 had the opposite ***,we identified that knockout of HMGCS1 suppressed mitogen-activated protein kinase(MAPK)pathway activity,while overexpression of HMGCS1 could remarkably enhance the pathway.U0126,a MEK1 inhibitor,offset the effects of HMGCS1 overexpression,indicating that HMGCS1 promotes RR AML through the MAPK ***,we verified that hymeglusin,a specific inhibitor of HMGCS1,decreases cell growth both in AML cell lines and primary bone marrow cells of AML ***,combination of hymeglusin and the common chemotherapeutic drug cytarabine and adriamycin(ADR)had synergistic toxic effects on AML *** study demonstrates the important role of HMGCS1 in AML,and targeting this protein is promising for the treatment of RR AML.

关键词： Chemotherapy sensitivity HMGCS1 MAPK pathway Relapsed and refractory AML Targeted therapy

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STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.L.He z.B.He z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia z.K.Jia H.B.Jiang J.Jiang S.z.Jiang J.B.Jiao z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.z.Liao Y.Liao C.X.Lin D.X.Lin X.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu z.Q.Liu z.Y.Liu z.W.Liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.peng L.peng X.Y.peng X.J.peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

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Clinical feasibility of laparoscopic left lateral segment liver resection with magnetic anchor technique:The first clinical study from China

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1336-1343页

作者： Miao-Miao zhang Ji-Gang Bai Dong zhang Jie Tao zhi-Min Geng zhuo-Qun Li Yu-Xiang Ren Yu-Hanzhang Yi Lyu Xiao-peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina zonglian College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Qide College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUND Magnetic anchor technique(MAT)has been applied in laparoscopic cholecystectomy and laparoscopic appendectomy,but has not been reported in laparoscopic partial *** To evaluate the feasibility of the MAT in laparoscopic left lateral segment liver *** Retrospective analysis was conducted on the clinical data of eight patients who underwent laparoscopic left lateral segment liver resection assisted by MAT in our department from July 2020 to November *** Y-z magnetic anchor devices(Y-z MADs)was independently designed and developed by the author of this paper,which consists of the anchor magnet and magnetic grasping *** time,intraoperative blood loss,intraoperative accidents,operator experience,postoperative incision pain score,postoperative complications,and other indicators were evaluated and *** All eight patients underwent a MAT-assisted laparoscopic left lateral segment liver resection,including three patients undertaking conventional 5-port and five patients having a transumbilical single-port *** mean operation time was 138±34.32 min(range 95-185 min)and the mean intraoperative blood loss was 123±88.60 mL(range 20-300 mL).No adverse events occurred during the *** Y-z MADs showed good workability and maneuverability in both tissue and organ *** particular,the operators did not experience either a“chopstick”or“sword-fight”effect in the single-port laparoscopic *** The results show that the MAT is safe and feasible for laparoscopic left lateral segment liver resection,especially,exhibits its unique abettance for transumbilical single-port laparoscopic left lateral segment liver resection.

关键词： Magnetosurgery/magnetic surgery Magnetic anchor technique Laparoscopic hepatectomy Transumbilical singleport laparoscopy Magnet

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Construction of CoNiHHTP MOF/PHI z-Scheme Heterojunction for ppb-Level NO2 photoelectric sensing with 405 nm at RT

Construction of CoNiHHTP MOF/PHI Z-Scheme Heterojunction for...

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第十一届新型太阳能材料科学与技术学术研讨会

作者： Rongping Xu peng Li zhiyu Ren Liqiang Jing Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials ScienceInternational Joint Research Center for Catalytic TechnologyHeilongjiang University

Ultrasensitive photoelectric detection of nitrogen dioxide （NO） with PHI under visible light irradiation at room tempera-ture （RT） remains an ongoing challenge due to the low charge separation and scarce adsorption *** this work,dimensionally matched ultrathin CoNiHHTP MOF/PHI z-Scheme heterojunction is successfully constructed by taking advantage of theπ-πinteractions existing between CoNiHHTP MOF and *** amountoptimized heterojunction possesses a record detection limitation of 1 ppb （Response=15.6%）for NO under 405 nm irradiation at RT,with reduced responsive （3.6 min） and recovery times （2.7 min）,good selectivity and reversibility,and long-time stability （150 days）compared with PHI,even superior to others reported at *** on the time-resolved photoluminescence spectra,in situ X-ray photoelectron spectra and DRIFTS results,the resulting sensing performance is attributed to the favorable z-scheme charge transfer and ***,the Ni-nodes favorably present in adjacent metal sites between the lamellae contribute to charge transfer and redistribution,whereas Co-nodes could act as the selective centers for promoted adsorption of ***,it is confirmed that the CoNiHHTP MOF/PHI heterojunction could effectively reduce the influence of O in gas sensitive reaction due to their unique bimetallic （Co,Ni） nodes,which is also favorable for the im-proved sensing performances for *** work provides a feasible strategy to develop promising PHI-based optoelectronic gas sensor at RT.

关键词： PHI Bimetal MOF Photogenerated electron transfer z-Scheme heterojunctions optoelectronic NO2 sensing

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改进模糊推理分类器进行木材树种近红外光谱开集分类识别研究

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光谱学与光谱分析 2024年第7期44卷 1868-1876页

作者：李振宇赵鹏王承琨东北林业大学计算机与控制工程学院黑龙江哈尔滨150040 广西科技大学计算机科学与技术学院(软件学院) 广西柳州545006 黑龙江科技大学电子与信息工程学院黑龙江哈尔滨150022

开集分类识别是近10多年来模式识别领域研究的热点,它能够识别训练集中已知类别的测试样本,同时还能够有效“拒识”未知类别的测试样本;这些未知类别样本不包含在训练集中。现有的开集分类识别算法主要是基于Support Vector Machine(SVM... 详细信息

开集分类识别是近10多年来模式识别领域研究的热点,它能够识别训练集中已知类别的测试样本,同时还能够有效“拒识”未知类别的测试样本;这些未知类别样本不包含在训练集中。现有的开集分类识别算法主要是基于Support Vector Machine(SVM)和深度学习网络框架进行改进,并且主要应用在自然景物图像领域中;在光谱分析领域中还鲜有报道。将传统的闭集框架下的模糊推理分类器进行模型改进,提出了开集框架下的改进模糊推理分类器,并将其应用到木材树种近红外光谱分类识别中。首先,使用Flame-NIR近红外微型光谱仪采集木材样本横切面的近红外光谱曲线,采用Metric Learning算法进行光谱向量维度约简降维至4维(4D)。其次,改进闭集框架下的模糊推理分类器,根据模糊规则置信度和各维度隶属度概率的乘积构建Generalized Basic Probability Assignment(GBPA),再根据GBPA进行分类处理。在20个树种的具有不同的Openness指标下的近红外光谱数据集的分类识别对比实验表明,改进的开集模糊推理分类器(fuzzy reasoning classifier in an open set,FRCOS)优于现有的基于机器学习和深度学习的开集分类识别主流算法,具有较好的评价指标F-Score,Kappa系数及总体识别率。

关键词：开集分类识别木材树种识别模糊推理分类器近红外光谱分析

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MBO:基于多目标平衡优化的监控视频浓缩

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计算机学报 2024年第9期47卷 2104-2115页

作者：张云佐朱鹏飞石家庄铁道大学信息科学与技术学院石家庄050043

视频浓缩可在极大压缩视频长度的同时完整保留目标运动信息,在学术界和工业界受到广泛关注.然而现有浓缩方法无法精准保留目标之间的交互行为,且难以平衡压缩和碰撞,严重阻碍了视频浓缩的性能提升和实际应用.为此,本文提出了一种基于多... 详细信息

视频浓缩可在极大压缩视频长度的同时完整保留目标运动信息,在学术界和工业界受到广泛关注.然而现有浓缩方法无法精准保留目标之间的交互行为,且难以平衡压缩和碰撞,严重阻碍了视频浓缩的性能提升和实际应用.为此,本文提出了一种基于多目标平衡优化的监控视频浓缩方法(Multi-Objective Balance Optimization,MBO).首先,提出了一种基于目标交互帧数量和动态阈值对比的交互行为判断方法,用以组建多目标单元,结合目标在每帧的移动方向并采用动态阈值提升交互行为判断的准确性;其次,定义了碰撞矩阵和插入位置占比率,分别记录目标碰撞和插入位置深浅;然后,提出了一种压缩与碰撞的动态平衡方法,以优化重排目标,能在极大程度缩短视频长度的同时减少产生的目标碰撞;最后,融合视频背景和重排后的目标生成浓缩视频.VISOR、CAVIAR和KTH等多个数据集上的实验结果表明,相较于当前主流方法,本文所提方法保留交互行为的F-score提升高达0.472,并且能够有效平衡压缩和目标碰撞.

关键词：视频浓缩多目标平衡优化交互行为

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