Video Events Recognition by Scene and Group Context

The ability to recognise video events has become increasingly more popular owing to its extensive practical applications.Most events will occur in certain scene with certain people,and the scene context and group context provide important information for event recognition.In this paper,we present an algorithm to recognise video events in different scenes in which there are multiple agents.First,we recognise events for each agent based on Stochastic Context Sensitive Grammar(SCSG).Then we propose the model of a scene in order to infer the scene in which the events occur,and we use a co-occurrence matrix of events to represent the group context.Finally,the scene and group context are exploited to distinguish events having similar structures.Experimental results show that by adding the scene and group context,the performance of events recognition can be significantly improved.

Discovery of rhyolitic tuffaceous slate in the southwestern margin of Yangtze Craton:Zircon U-Pb ages(2491 Ma)and tectonic-thermal events

The Mesoproterozoic Dongchuan Group that is widely exposed in Yimen area,central Yunnan Province is a series of sedimentary sort of low-grade metamorphic rocks interbedded with volcanic rocks,which are closely related to the early tectonic evolution of the Earth.However,its formation era,sedimentary filling sequence,and geotectonic characteristics have always been in dispute.In this study,several rhyolitic tuffaceous slate interlayers with a centimeter-level thickness were found in the previously determined Heishan Formation of the Dongchuan Group located to the western part of Yimen-Luoci fault zone.This paper focuses on the study of the rhyolitic tuffaceous slate in Qifulangqing Village,Tongchang Township,Yimen County.LA-ICP-MS zircon dating was conducted,achieving the crystallization age of magma of 2491±15 Ma and the metamorphic ages of about 2.3 Ga,2.0 Ga,and 1.8 Ga for the first time.Meanwhile,according to in-situ Hf isotope analysis,the zirconεHf(t)values were determined to range from−3.0 to 7.6,with an average of 2.7.Furthermore,the first-stage Hf model age(TDM1)was determined to be 2513−2916 Ma,indicating that the provenance of the rhyolitic tuffaceous slate is the depleted mantle or juvenile crust between the Middle Mesoarchean and the Late Neoarchean.Therefore,it is believed that the strata of the slate were deposited in the Late Neoarchean,instead of the Mesoproterozoic as determined by previous researchers.Accordingly,it is not appropriate to group the strata into the Mesoproterozoic Dongchuan Group.Instead,they should be classified as the Maolu Formation of the Neoarchean Puduhe Group given the lithologic association and regional information.Furthermore,the magma ages of 2491±15 Ma are highly consistent with the eras of the large-scale Late Neoarchean orogenic magmatic activities on the northern margin of the Yangtze Craton,and thus reflect the orogenic process consisting of subduction and collision from Late Neoarchean to Early Paleoproterozoic.The magmatic activities during this period were possibly caused by the convergence of the supercontinent Kenorland.Meanwhile,the metamorphic ages of 2.3 Ga,2.0 Ga,and 1.8 Ga are highly consistent with three metamorphic ages of 2.36 Ga,1.95 Ga,and 1.85 Ga of the northern margin of the Yangtze Craton,indicating that the strata experienced Paleoproterozoic tectonic-thermal events.The study area is located on the eastern margin of Qinghai-Tibet Plateau,and thus was possibly re-transformed by magmatism subjected to the subduction of the Meso-Tethys Ocean during the Early Cretaceous.The discoveries made in this study will provide strong petrological and chronological evidence for analyzing the early crustal evolution of the Yangtze block.

An Event Alarm System Based on Single and Group Human Behavior Analysis

Due to the increasing demand for security, the development of intelligent surveillance systems has attracted considerable attention in recent years. This study aims to develop a system that is able to identify whether or not the people need help in a public place. Different from previous work, our work considers not only the behaviors of the target person but also the interaction between him and nearby people. In the paper, we propose an event alarm system which can detect the human behaviors and recognize the happening event through integrating the results generated from the single and group behavior analysis. Several new effective features are proposed in the study. Besides, a mechanism capable of extracting one-to-one and multiple-to-one relations is also developed. Experimental results show that the proposed approach can correctly detect human behaviors and provide the alarm messages when emergency events occur.

STUDY OF A COMPREHENSIVE MONITORING INDEX FOR TWO TYPES OF ENSO EVENTS

Some recent studies presented two existing types of ENSO events, one is the Eastern-Pacific(EP) type and the other the Central-Pacific(CP) type. This study examined the monitoring ability of several current operational ENSO indices. The results indicated that a single index could not distinguish the EP and CP in the historical ENSO events during 1950-2009. The Nio 3 index may only be suitable for monitoring the EP-type ENSO, while the Nio 4 index works only for the CP-type ENSO. In order to capture the occurrence of ENSO events and distinguish the type, we considered a new monitoring index group using Nio 3 and Nio 4 indices. Further analysis confirmed that this index group can monitor different types of historical ENSO events with different spatial distribution of sea surface temperature. It has a good performance in determining the characteristics of the ENSO events, including peak intensity, onset,decay, and mature phase.

Formal Verification of Secrecy in Group Key Protocols Using Event-B

Group key security protocols play an important role in today’s communication systems. Their verification, however, remains a great challenge because of the dynamic characteristics of group key construction and distribution protocols. Security properties that are well defined in normal two-party protocols have different meanings and different interpretations in group key distribution protocols, specifically, secrecy properties, such as group secrecy, forward secrecy, backward secrecy, and key independence. In this paper, we present a method to verify forward secrecy properties for group-oriented protocols. The method is based on a correct semantical link between group key protocols and event-B models and also uses the refinement process in the B method to model and verify group and forward secrecy. We use an event-B first-order theorem proving system to provide invariant checking for these secrecy properties. We illustrate our approach on the Tree based Group Diffie-Hellman protocol as case study.

A Study on the Evolution of Mechanism of Infectious Disease Analysis Model of Event Using Micro-Blog Platform

After the occurrence of unexpected group events of network, the relevant opinion information will spread rapidly through micro-blog, and the negative public opinion information will aggravate the unexpected the group events to upgrade and expand the scope of harm. It is difficult to deal. So public opinion control is very important. In this paper, we establish an influence model for spreading of public opinion based on SIR model. Through the political analysis, this paper finds that the network group events will subside, but the influence scope, time and ability of event cannot be ignored. As a result of this study, the corresponding strategies are put forward in this paper.

Analysis of platinum-group elements in drill core samples from the Meishan Permian-Triassic boundary section, China

There is a long-standing controversy of what triggered the extinction at the Permian-Triassic boundary, the most severe mass extinction in the geologic record, including flood basaltic volcanism and/or bolide impact hypothesis. In order to clarify various pieces of evidence for the mass extinction event at the Permian-Triassic boundary, some researchers from some laboratories throughout the world have made a comprehensive study on a group of samples from the Meishan area of China. Some fresh core samples from the Permian-Triassic boundary in the Meishan area were analyzed in this study. The results showed that there is no Ir anomaly. Moreover, the PGEs patterns of those samples show obvious differentiation characteristics, that is different from the case encountered in meteorites. So no evidence supports the hypothesis of extraterrestrial impact. In contrast, the PGEs patterns are similar to those of Siberian and Emeishan basalts, which indicates that those PGEs are derived mainly from the basalts, lending a support to the correlation between mass extinction at the Permian-Triassic boundary and flood basaltic volcanism. This study has also confirmed the results for samples from section C prior to the analysis of the samples.

Geochemistry of a paleosol horizon at the base of the Sausar Group,central India： Implications on atmospheric conditions at the Archeane Paleoproterozoic boundary

A paleosol horizon is described from the contact of the Sausar Group（w2400 Ma） and its basement（Tirodi Gneiss; 〉2500 Ma） in Central India. Physical evidence of pedogenesis is marked by the development of stress corrosion cracks, soil peds, corestone weathering and nodular rocks. XRD and SEM-EDX data indicate the presence of siderite, ankerite, uraninite, chlorite, alumino-silicate minerals, ilmenite,rutile and magnetite, in addition to quartz, feldspar and mica. The chemical index of alteration, the plagioclase index of alteration, and the chemical index of weathering show an increasing trend from parent rock to the paleosol and indicate a moderate trend of weathering. The A-CN-K plot indicates loss of feldspars, enrichment in Al2O3 and formation of illite. Different major element ratios indicate baseloss through hydrolysis, clay formation, leaching of some elements, and more precipitation with good surface drainage. The paleosol is depleted in HREE in comparison to the parent rock indicating high fluid-rock interaction during weathering. The paleosol samples show flat Ce and Eu anomalies, low SREE, and high（La/Yb）N, indicative of a reducing environment of formation. Reducing condition can also be inferred from the concentration of elements such as V, Co, Cu, Pb, and Zn in the paleosol profile. Although enriched in Fe and Mg, the overall geochemical patterns of the paleosol indicate oxygen deficient conditions in the atmosphere and development by weathering and leaching processes associated with high precipitation and good surface drainage at the time of development of this paleosol during the Archeane Paleoproterozoic transition.

Network Group Psychological Education of College Students

Based on the perspective of psychology,this paper analyzes the causes and characteristics of college students’network mass incidents,explores the psychological factors of college students’network mass incidents,and puts forward the educational strategies to solve college students’network mass incidents:(1)Adhere to humanism and take appeals as the center;(2)To improve the campus network public opinion guidance mechanism under the guidance of relevant social cognition theories;(3)Strengthen communication and improve communication skills;(4)Promote information disclosure and transparency,and eliminate uncertainty and ambiguity.

Network Group Psychological Education of College Students

Based on the perspective of psychology,this paper analyzes the causes and characteristics of college students’network mass incidents,explores the psychological factors of college students’network mass incidents,and puts forward the educational strategies to solve college students’network mass incidents:No.1.Adhere to humanism and take appeals as the center;No.2.To improve the campus network public opinion guidance mechanism under the guidance of relevant social cognition theories;No.3.Strengthen communication and improve communication skills;No.4.Promote information disclosure and transparency,and eliminate uncertainty and ambiguity.

辽东宽甸钴矿勘查区变基性岩地球化学特征和年代学研究

以辽东宽甸钴矿勘查区南辽河群里尔峪组变基性岩为研究对象,通过全岩地球化学组成和锆石年代学研究,讨论了里尔峪组变基性岩形成的构造背景以及钴的来源。地球化学分析结果显示,钻孔中变基性岩为正斜长角闪岩,具有一致的稀土元素配分模式,弱Eu负异常,显示E-MORB的地球化学特征。详细的矿物化学分析和地质温压计算结果表明,含辉石斜长角闪岩(ZK2-1)记录了峰期高角闪岩相变质温压条件,p=0.82~1.00 GPa和t=712~751℃;(含辉石)斜长角闪岩(ZK1-1和ZK3-1)记录了峰后退变质阶段的温压条件,分别为p=0.42~0.81 GPa和t=688~759℃、p=0.59~0.85 GPa和t=703~739℃。锆石SHRIMP U-Pb定年结果表明,变基性岩中变质锆石记录的年龄为1857~1850 Ma。综合宽甸地区变基性岩地球化学和年代学结果,推测其原岩为古元古代中期拉斑玄武岩,形成于伸展环境,并且在其形成过程中岩浆经历了显著的地壳物质混染,暗示古元古代中期打开的洋盆规模可能有限。通过与南、北辽河群变基性岩全岩地球化学特征对比研究,认为宽甸地区变基性岩不是钴矿化的主要成矿物质来源,有关钴矿化的物质来源仍需进一步研究。

不同年龄住院T2DM患者心血管事件发生的相关因素分析

目的:探讨不同年龄段住院2型糖尿病(type 2 diabetes mellitus,T2DM)患者临床特征及心血管事件发生影响因素。方法:收集2019年1月至12月石家庄市第二医院108例住院T2DM患者的临床资料,根据心血管事件发生分为发生组和未发生组,比较两组临床特征及不同年龄住院T2DM患者临床特征,采用Logistic回归方程分析住院T2DM患者心血管事件发生影响因素。结果:(1)所有患者均获得2年随访结果,心血管事件发生率为37.04%;(2)发生组年龄、T2DM病程、糖化血红蛋白(glycosylated hemoglobin,HbA1c)、半乳糖凝集素-3(galectin-3,Gal-3)、高血压病史均大或长或高于未发生组,踝肱指数、C1q/肿瘤坏死因子相关蛋白9(C1q/tumor necrosis factor related protein 9,CTRP9)低于未发生组(P<0.05);(3)老年组T2DM病程、HbA1c、Gal-3、高血压病史均大或长或高于中青年组,踝肱指数、CTRP9低于中青年组(P<0.05);(4)T2DM病程、踝肱指数、年龄、CTRP9是住院T2DM患者心血管事件发生影响因素(P<0.05)。结论:T2DM病程、踝肱指数、年龄、CTRP9可能是导致住院T2DM患者心血管事件发生的影响因素,临床实际中应密切关注伴有上述情况的住院T2DM患者,积极防治,促进预后改善。

巴林特小组活动对ICU护士护理不良事件负性情绪及共情能力的影响

目的探讨巴林特小组活动对重症监护病房(ICU)护士护理不良事件、负性情绪及共情能力的影响。方法选取在ICU发生过护理不良事件的70名护士作为研究对象,采用随机数字表法将其分为研究组和对照组,各35名。对照组护士给予一般干预,研究组护士在对照组的基础上给予巴林特小组活动。干预前后采用汉密顿焦虑量表、汉密顿抑郁量表、杰弗逊共情量表(JSEHP)评估两组护士的负性情绪及共情能力。入组后第二年比较两组护士不良事件发生率。结果干预后,研究组护士有害怕、紧张、罪恶感、焦虑心理、抑郁情绪人数均低于对照组(P<0.01)。干预后,研究组护士JSE-HP总分及各维度评分均较干预前升高,且研究组高于对照组(P<0.01)。入组后第二年,研究组护士护理不良事件发生率低于对照组(P<0.05)。结论巴林特小组活动能够有效降低ICU护士护理不良事件的发生率,改善负性情绪,提升共情能力,适于临床推广应用。

基于KANO模型的突发疫情事件社区弱势群体应急信息需求研究

[目的/意义]突发疫情事件中,社区是弱势群体获取应急信息的重要渠道,了解弱势群体信息需求,有助于社区精准提供信息服务,促进辖区内居民应急信息储备,增强其满意度。[方法/过程]文章以突发疫情为背景,结合疫情重要信息类别及相关文献,对社区内弱势群体应急信息需求展开调查,借助KANO问卷对各需求进行分类,以确定社区优化应急信息服务的优先级。[结果/结论]针对弱势群体的必备型需求、期望型需求、魅力型需求、无差异型需求调整应急信息服务重点,通过关注应急需求转化、拓宽信息传播渠道等措施,保障弱势群体应急信息需求得以满足。

质量控制小组管理在手术室护理管理中的应用效果

目的:观察质量控制小组管理在手术室护理管理中的应用效果。方法:选取2020年5月至2021年5月该院50名手术室护理人员为对照组,实施常规护理管理;选取2021年6月至2022年6月该院50名手术室护理人员为观察组,实施质量控制小组管理。比较两组管理前后护理管理质量、质量控制标准、工作压力评分,以及不良事件发生率。结果:管理后,观察组护理管理质量评分和护理文书书写、操作规范、器械物品管理等质量控制标准评分均高于对照组,差异有统计学意义(P<0.05);管理后,观察组专业工作、患者护理等工作压力评分均低于对照组,差异有统计学意义(P<0.05);观察组不良事件发生率为2.00%(1/50),低于对照组的16.00%(8/50),差异有统计学意义(P<0.05)。结论:质量控制小组管理应用于手术室护理管理可提高护理管理质量、质量控制标准评分,降低工作压力评分和不良事件发生率,效果优于常规护理管理。

基于项群理论的高职院校公共体育课程思政的实施研究

项群理论作为运动训练学领域的重要理论,其将不同运动项目按竞技特征进行聚合分类的思想,为高职院校公共体育课程思政的实施提供了新思路。因此,基于项群理论对高职院校公共体育课程思政的实施进行了研究。首先阐述了项群理论的缘起与概念阐释,而后基于项群理论对高职院校公共体育课程中各运动项目蕴含的思政教育元素进行了提取与归类,并构建了高职院校公共体育课程思政的理论框架,从教学设计、教学实施、教学反馈等方面提出了基于项群理论实施高职院校公共体育课程思政的具体思路。

Identification of carbonates with high positive carbon isotope excursion from the Liaohe Group in the northeastern North China Craton and implications for the Lomagundi-Jatuli Event

The Great Oxidation Event(GOE)during the early Paleoproterozoic represents the first significant buildup in Earth’s atmospheric oxygen and resulted in a series of significant changes in the Earth’s surface environment.Among them is the 2.22(or 2.33)–2.06 Ga Lomagundi-Jatuli Event(LJE),which is globally,the largest magnitude and longest duration,marine carbonate positive carbon isotope excursion(δ^(13)C_(V-PDB)>10‰)known.This event has attracted the attention of scholars all over the world.However,except for a high positive carbon isotope excursion(δ^(13)C_(V-PDB)>10‰)recently identified from marine carbonate rocks within the Daposhan Formation in the lower Fanhe Group(or the Sanchazi Group)in the Longgang Block in the northeast North China Craton(NCC),Paleoproterozoic carbonates in the NCC are characterized by a low-amplitude positive carbon isotope excursion(δ^(13)C_(V-PDB)<5‰).This feature is significantly different from the high positive carbon isotope excursion characteristics of carbonates deposited during the LJE period in other cratons.To determine whether there are large-scale and reliable sedimentary records of the LJE in the NCC and the reasons for the low positive δ^(13)C excursion of the Paleoproterozoic carbonates obtained by the previous studies,we conducted field investigations,carbon-oxygen isotopes,and whole-rock major and trace element geochemical analyses of Liaohe Group carbonate rocks from the Anshan area in the northwestern margin of the Jiao-Liao-Ji Belt in the northeast NCC.Our results show that the Gaojiayu Formation of the Liaohe Group in the Anshan area has high positive δ^(13)C_(V-PDB) values from 8.6‰ to 12.4‰ and δ^(18)O_(V-SMOW) values of 17.9‰-27.4‰(δ^(18)O_(V-PDB) values ranging from−12.6‰to -3.4‰).This provides solid evidence for the preservation of reliable sedimentary records of the LJE in the northeastern NCC.Deposition of the high positive δ^(13)C excursion(>10‰)of marine carbonate rocks occurred at about 2.15 Ga.Lithological comparisons of different sections and whole-rock geochemical results show that the high positive δ^(13)C excursion is mainly controlled by the stratigraphic interval and depositional ages;the changes of sedimentary facies and diagenesis have no significant effects on reducing of the δ^(13)C values.The intrusion of mafic sills into carbonates has resulted in synchronous decrease of C-O isotopes near the contact zones,but the decreasing amplitude of δ^(13)C is less than 3‰.Therefore,our study firstly identified marine carbonates with high positive δ^(13)C excursion(>10‰)from the Gaojiayu Formation,which provides robust evidence for global correlation of the LJE,which has implications for its genesis and global significance.Moreover,due to global near-synchronization of the LJE,the carbon-oxygen isotope chemical stratigraphy of carbonate rocks deposited during the LJE period,combined with geochronological data,can provide new constraints on the stratigraphic subdivision and correlations of Paleoproterozoic sedimentary successions in the NCC.

高校公共体育课程思政的项群化教学探析

高校公共体育课程思政项群化教学的现实意义在于,推进公共体育课程思政的一体化建设、延展公共体育课程思政的育人内涵和效度、创新公共体育课程思政的教学模式。系统谋划和重构体育课程思政的项群化教学实施策略,需要从思政元素、教学设计、教学方法、教学评价等方面,精准探析教学载体,提升课程思政教学的育人成效,推动高校公共体育课程思政建设的的深入发展。

氨基末端脑钠肽前体、左室射血分数及心电图碎裂QRS波群与急性心肌梗死患者不良预后的相关性研究

目的:探究氨基末端脑钠肽前体(NT-proBNP)、左室射血分数(LVEF)、心电图碎裂QRS波群(fQRS)与急性心肌梗死(AMI)患者不良预后的关系。方法:采用巢式病例对照研究方法,选取2021年1月-2023年1月于河池市第三人民医院行经皮冠状动脉介入治疗(PCI)的AMI患者96例作为研究对象,依据术后6个月是否发生主要心血管不良事件进行分组,将预后不良的患者纳入预后不良组,随后在研究队列人群中按照1∶2频数配比纳入预后良好的患者为预后良好组。收集并分析患者的临床信息,采用Logistic回归模型分析NT-proBNP、LVEF及fQRS与AMI预后不良的相关性。结果:96例AMI患者术后随访6个月发现预后不良患者19例(19.78%)。多因素Logistic回归分析结果提示,NT-proBNP水平上升、LVEF降低、发生fQRS是AMI患者不良预后的影响因素(P<0.05)。结论:NT-proBNP、LVEF、fQRS是AMI患者不良预后的影响因素,在预测心血管不良事件及预后具有重要意义。

辽东青城子矿集区大理岩碳—氧同位素组成及其对含矿层位对比及深部找矿的指示

辽东青城子矿集区金—多金属矿床严格受古元古代辽河群大石桥组大理岩及盖县组变质碎屑岩过渡带“硅—钙面”附近层间或近层间构造带控制,含矿层位的精确对比有助于区域及深部找矿预测。笔者等对青城子矿集区85件大理岩样品开展了碳—氧同位素测试,其中大石桥组中—下部厚层不含矿大理岩(普遍被古元古代基性岩床侵入)的δ^(13)C_(V-PDB)为2.1‰~6.1‰,普遍具有明显的碳同位素组成正漂移,其原岩沉积于洛马贡迪—贾图利(Lomagundi—Jatuli)事件后期;而大石桥组上部中薄层含矿大理岩的δ^(13)C_(V-PDB)为-6.4‰至3.0‰,碳同位素组成正漂移不明显,其原岩沉积于洛马贡迪—贾图利事件之后;矿区东南部原定的“南辽河群”“高家峪组”碎屑岩内大理岩夹层的δ^(13)C_(V-PDB)为-2.8‰至0,无明显碳同位素组成正漂移,与胶—辽—吉带北部“北辽河群”高家峪组大理岩强烈碳同位素正漂移特征明显不同,其原岩也沉积于洛马贡迪—贾图利事件之后。碳—氧同位素组成及岩性对比揭示,青城子矿集区东南部被认定为金—多金属矿体底板的“高家峪组”浅粒岩地层的层位与大石桥组上部地层相当,沉积时代晚于鞍山地区“北辽河群”高家峪组地层。结合前人研究及找矿勘查成果,认为林家三道沟、小佟家堡子、高家堡子—风银大地矿区深部可能存在有多个“硅—钙面”及含矿层位,具有很好的成矿潜力及找矿前景,深部勘探的终点应该到达大石桥组中—下部厚层大理岩段,即有变质基性岩床侵入、并具有碳同位素组成正异常的厚层状大理岩段。