Articles de revues sur le sujet « Complex event structure »
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Krupa, Tadeusz. « Events and Event Processes ». Foundations of Management 1, no 2 (1 janvier 2009) : 143–58. http://dx.doi.org/10.2478/v10238-012-0016-9.
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Events and Event ProcessesPresented article describes the issues known from the logical structures characterization theory [2] used in this case to describe the events designed for the needs of proper functioning of organizational structures. Necessary formalization is used strictly for the maintenance of the concept discipline. Event theory [5] is used in the designing of complex structures of organizational systems for which the basic necessity is its compliance with the set functional description. Final organization's characteristics are determined by many factors, such as: a) completeness and non-contradiction of the functional specification b) theoretical correctness of the functional transformation of the organization into the design of its organizational structure c) correctness of the technical project realization.
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Megerdoomian, Karine. « Event Structure and Complex Predicates in Persian ». Canadian Journal of Linguistics/Revue canadienne de linguistique 46, no 1-2 (juin 2001) : 97–125. http://dx.doi.org/10.1017/s0008413100017953.
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AbstractThis article investigates the syntactic and semantic properties of complex predicates in Persian in order to isolate the individual contributions of the verbal components. The event structure of causative alternation and unergative verbs is determined, based on a decomposition of the verbal construction into primitive syntactic elements consisting of lexical roots and functional heads, with the latter projecting all arguments of the verbal construction. An analysis is provided whereby the argument structure is not projected from the lexicon but is formed compositionally by the conjunction of the primitive components of the complex predicate in syntax. The dual behaviour of Persian complex predicates as lexical and syntactic elements, which has been attested in Persian literature on light verb constructions, follows naturally from the analysis proposed since there is no strict division between the level of word formation and the component manipulating phrasal constructs.
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Kallunki, J. « Complex Type II Solar Radio Event on 4 July 2022 ». Latvian Journal of Physics and Technical Sciences 59, no 6 (1 décembre 2022) : 22–29. http://dx.doi.org/10.2478/lpts-2022-0044.
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Abstract On 4 July 2022, a complex low-frequency solar radio burst was observed in Metsähovi Radio Observatory of Aalto University. The radio burst was observed at a frequency range between 20 and 80 MHz. In GOES (Geostationary Operational Environmental Satellite) class, the event was classified as C5.1. However, coronal mass ejection (CME) was not associated to this event. The observed radio burst was a long-lasting (~10 minutes) event, and it could be mainly classified as type II solar radio event. Also type III solar events were observed before long-lasting type II event. The event includes common frequency drifting emission structures, both fundamental and harmonic structures, but also rarely observed continuum-like or stationary structure. It is assumed that the continuum-like radio emission structure is originated from the stationary flare (coronal) loop, which was visible over the whole event. The drifting emission structure means accelerated electrons, which are produced by the shock related phenomena. The paper provides the observations from this event on radio wavelength, and also soft-X-ray regime and optical wavelength (AIA 171). In addition, a possible, simplified scenario is presented for forming the drifting and continuum solar radio emissions in type II solar burst.
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Guo, Yi Fei, Shi Si et Da Wei Jin. « System Security Monitoring Based on Complex Event Processing and Neural Network ». Applied Mechanics and Materials 571-572 (juin 2014) : 626–37. http://dx.doi.org/10.4028/www.scientific.net/amm.571-572.626.
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Recently system security monitoring has meet several challenges. Therefore a system security monitoring approach based on complex event processing and dynamic structure-based neural networks is proposed in this paper. Firstly, complex event processing is used to handle real-time event streams and extract complex events from system security sensors. Secondly, the complex events from CEP would be used for further study by dynamic structure-based neural network. Finally the process of system security monitoring is showed and experiments would be applied to validate the feasibility, efficiency and precision of the approach.
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Isaev, B. A., et I. F. Ignatieva. « Структура революций. Часть 2. Стадийная и событийная структура революций ». Konfliktologia 13, no 3 (19 octobre 2018) : 9. http://dx.doi.org/10.31312/2310-6085-2018-13-3-9-28.
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This article analyzes one of the most important features of the revolution — its structure. The author highlights several structures, but the main attention is focusing on the analysis of сonflictological, socio-political and stagе-event structures. In the second part of the article examines the event and step structure of revolutions. In the analysis of chemical structure of revolutions the author compared the approaches of P. Sorokin, C. Brinton, P. Shtompka, other authors and concluded that 1. step structure of such a complex, long and changing socio-political phenomenon, as revolution cannot be adequately described in three or four stages, that «normal» stages of revolutions are the 8–10 stages; 2. for more accurate and detailed descriptions of revolutions must complement structure-stage dust cleaning event; 3. stagе-event structure can be applied both for individual use and together with conflictological and socio-political structures to more adequately describe the complex phenomenon of revolution. From the point of view of the author, the step structure revolution consists of eight defined stages: 1. pre-revolutionary fermentation; 2. revolution in the public consciousness; 3. the revolutionary situation; 4. moderate start of the revolution; 5. a radical extension (switching power to the radical revolutionaries) 6. strong suppression (counter-revolutionary or moderately-revolutionary dictatorship); 7. removing the dictator, the convergence of pre-revolutionary and post-revolutionary values; 8. post-revolutionary reform. Each stage contains certain revolutionary events. These stages and events and make up a stage-event structure of revolution. At the end of the article, the author shows how to use the different investigated them structures can solve applied problems analysis of revolutions, and makes the overall conclusions regarding the first and second part of the article. The main conclusions are that the diversity of revolutions dictates have to analyze multiple structures revolutions, leading from which are сonflictological, socio-political and stage-event structure.
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Jia, Yunsong, Shuaiqi Huang et Xiang Li. « Complex event processing system for IoT greenhouse ». E3S Web of Conferences 267 (2021) : 01048. http://dx.doi.org/10.1051/e3sconf/202126701048.
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Greenhouse is an important part of facility agriculture and a typical application scenario of modern agricultural technology. The greenhouse environment has the characteristics of nonlinearity, strong coupling, large inertia, and multiple disturbances. There are many environmental factors and it is a typical complex system [7]. In smart greenhouses, control commands are mostly triggered by complex events with multi-dimensional information. In this paper, by building the aggregation structure of complex events in the greenhouse, the technology is applied in the greenhouse as a whole. The core innovations of this paper are as follows: through the analysis of the information transmission process in the greenhouse, combined with the characteristics of the scene, a CEP information structure with predictive modules is formed, which is conducive to the popularization and application of CEP technology in the agricultural field. Pointed out the importance of extreme conditions in the prediction of the greenhouse environment for model evaluation. By improving the loss function in the machine learning algorithm, the prediction performance of a variety of algorithms under this condition has been improved. Applying CEP technology to intelligent greenhouse control scenarios, a set of practical complex event processing systems for greenhouse control has been formed.
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BASCIANO, Bianca. « On the event structure of Chinese resultative compounds ». Cahiers de Linguistique Asie Orientale 48, no 2 (27 novembre 2019) : 173–241. http://dx.doi.org/10.1163/19606028-04802002.
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Abstract It has been observed that Chinese resultative compounds display varied aspectual behaviors. Yong (1997) distinguishes between simple change resultatives, i.e. resultatives expressing instantaneous change, but allowing a process preliminary to the final change, and complex change resultatives, i.e. those allowing a gradual development of action. Starting from this distinction, this paper aims at providing a structural account of these resultative compounds, based on the constructionist framework put forth by Ramchand (2008), arguing that only simple change resultatives are characterized by having a result layer in their eventive structure. Complex change resultatives, in contrast, are characterized by having the result element in the complement position of the process projection, providing a scalar path. This allows a gradual change of state, and telicity emerges when the path is bounded. The paper also discusses the relation between complex change resultatives and degree achievements.
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Browne, Mitchell. « On the Integration of Dative Adjuncts into Event Structures in Yapa Languages ». Languages 6, no 3 (13 août 2021) : 136. http://dx.doi.org/10.3390/languages6030136.
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Warlpiri and Warlmanpa (Ngumpin-Yapa languages of Australia) exhibit a complex predicate construction in which a class of preverbs introduces a single argument that is not shared by the argument structure of the inflecting verb, nor is there necessarily any shared event structure. This is problematic for many theories of linking structures of complex predicates, since no arguments or events are shared between the predicative elements of the complex predicate. The same grammatical relation is instantiated by a beneficiary adjunct. In light of new research in event and argument structure, I propose a lexical rule which introduces an applicative argument to account for the beneficiary construction; and that the preverbs take another predicate as one of their arguments to account for the complex predicates. The applicative rule and the preverbs both introduce an argument of the same grammatical relation, leading to interesting interactions, given that two grammatical relations of the same type are not expected to co-occur within a single clause.
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Farkas, Imola-Ágnes. « Până-PPs and Complex Event Constructions in Romanian ». Studia Universitatis Babeș-Bolyai Philologia 67, no 1 (25 mars 2022) : 141–54. http://dx.doi.org/10.24193/subbphilo.2022.1.09.
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"Până-PPs and Complex Event Constructions in Romanian. This paper examines the syntactic and semantic status of Romanian PPs headed by the morphologically complex prepositions până în/la ʻuntil/as far as/up to in/at’ in VPs of change of location (a pluti până în peșteră ʻfloat up to the caveʼ) and change of state (a munci până la epuizare ʻwork to the point of exhaustionʼ). Contrary to the claims made in the literature (Barbu 2015), the approach taken here argues that these – and other similar – VPs cannot be considered complex event constructions such as goal-of-motion structures and strong resultative constructions, respectively. The discussion revolves around the interpretation of the entire VP, the lack of any type of restriction on the syntactic and semantic classification of the verb, the violation of the Direct Object Restriction, as well as the borderline between these PPs and temporal adjuncts. These properties highlight the fact that the availability of such VPs does not turn Romanian into a satellite-framed language as they are not real counterexamples to the Talmian generalization according to which verb-framed Romanian disallows these two complex event constructions. Keywords: goal-of-motion structure, resultative construction, VP, până-PP, Romanian "
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Kovács, László, et Dávid Polonkai. « Event sequence segmentation for parallel processes ». Production Systems and Information Engineering 10, no 2 (2022) : 52–63. http://dx.doi.org/10.32968/psaie.2022.2.5.
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The robotic process mining focuses on the analysis of historical process sequences in order to build up a process model for the investigated field. One of the main tasks in robotic process mining is the construction of process schema for the input sequences. Usual methods are able to generate models using only baseline graph structures. In order to support high level structures like parallelism, the input event sequence structure must support additional attributes on the events. This paper presents a novel approach on sequence segmentation providing an intermediate graph structure which can be used to mine complex graph patterns. The tested prototype system contains a Python-based implementation of the proposed algorithm. In the paper, some tests are shown to illustrate the suitability of the proposed model.
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Радомир Альбертович, Зайнуллин,. « SYNTAX OF THE EVENT STRUCTURE ». Вестник Тверского государственного университета. Серия : Философия, no 3(61) (1 décembre 2022) : 36–42. http://dx.doi.org/10.26456/vtphilos/2022.3.036.
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Статья посвящена выражению механизма событийного аспекта системы реальности. Это достигается через введение рационального языка, выражающего квантирование актуализации бытия, которое, как пересечение трансцендентальных форм, детерминирует и редуцирует отношения действительности к единой функции. В таком случае бытие - это атрибут, который образует систему реальности в виде значений и отношений действительности, синтезированных в эмпирическом сознании. Это приводит к следствию, что событие размыкает бытийственные структуры с целью их реструктуризации путем локализации топоса новой идентичности. Данные механизмы выражаются математическим метаязыком и описываются в понятиях сложных систем. Предлагается описание действительности в виде логико-математического синтаксиса, который раскрывает трансцендентальное правило разума. This article is devoted to the formal expression of the mechanism of the event aspect of the reality system. This is achieved through the introduction of a rational language that expresses the quantization of the actualization of being, which, as the intersection of transcendental forms, determines and reduces the relationship of reality to a single function. In this case, being is an attribute that forms a system of reality in the form of meanings and relations of reality, synthesized in empirical consciousness. This leads to the consequence that the event opens existential structures in order to restructure them by localizing the place of a new identity. These mechanisms are expressed by a mathematical metalanguage and are described in terms of complex systems. A description of reality is proposed in the form of a logical-mathematical syntax, which reveals the transcendental rule of reason.
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Jou, Jerwen, et Richard J. Harris. « Event order versus syntactic structure in recall of adverbial complex sentences ». Journal of Psycholinguistic Research 19, no 1 (janvier 1990) : 21–42. http://dx.doi.org/10.1007/bf01068183.
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Jia, Yunsong, et Xiang Li. « Complex Event Processing Methods for Greenhouse Control ». Agriculture 11, no 9 (26 août 2021) : 811. http://dx.doi.org/10.3390/agriculture11090811.
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In the greenhouse environment, the application of complex event processing (CEP) technology can effectively tackle the problem of recognition of the complex patterns that appeared in greenhouse conditions. In the existing research, few scholars have proposed a scheme to integrate complicated scenes within the greenhouse environment with high efficiency, convenience, and low coupling. Therefore, in order to solve the problem of hard recognition and fusion of complex patterns in the greenhouse environment, based on the characteristics of the greenhouse, this paper proposes a complex event processing method for greenhouse control. Our method has high applicability and high expansibility, including 13 types of event processing agents and 21 types of typical events involved in greenhouse automatic control. This method has the advantages of low information coupling and multi-domain integration, which can be directly used by agricultural experts and related workers and is of great significance to promote the extensive application of CEP technology in the greenhouse field. Our experiment successfully realized a greenhouse intelligent control system based on CEP technology is successfully realized in our experiment. The experimental statistics shows that the structure of the control system was accessible and effective.
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Ahmad, Shakeel, Shaista Khan, Ashwini Kumar, Arpit Singh, A. Ahmad et B. K. Singh. « Correlations and Event-by-Event Fluctuations in High Multiplicity Events Produced in 208Pb-208Pb Collisions ». Advances in High Energy Physics 2018 (2018) : 1–11. http://dx.doi.org/10.1155/2018/6914627.
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Analysis of high multiplicity events produced in 158A GeV/c 208Pb-208Pb collisions is carried out to study the event-by-event fluctuations. The findings reveal that the method of scaled factorial moments can be used to identify the events having densely populated narrow phase space bins. A few events sorted out by adopting this approach are individually analyzed. It is observed that these events do exhibit large fluctuations in their pseudorapidity, η, and azimuthal angle, ϕ, distributions arising due to some dynamical reasons. Two-particle Δη-Δϕ correlation study applied to these events too indicates that some complex two-dimensional structure of significantly high magnitude is present in these events which might have some dynamical origin. The findings reveal that the method of scaled factorial moments may be used as an effective triggering for events with large dynamical fluctuations.
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Wang, Jianhua, Shilei Lu, Yubin Lan et Lianglun Cheng. « An Efficient Complex Event Processing Algorithm Based on NFA-HTBTS for Massive RFID Event Stream ». International Journal of Information Technologies and Systems Approach 11, no 2 (juillet 2018) : 18–30. http://dx.doi.org/10.4018/ijitsa.2018070102.
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This article describes how quickly picking up some valuable information from massive RFID event stream often faces with the problem of long detection time, high memory consumption and low detection efficiency due to its stream characteristics of volume, velocity, variety, value and veracity. Aim to solving the problems above, an efficient complex event processing method based on NFA-HTBTS (Nondeterministic Finite Automaton-Hash Table B+ Tree Structure) is presented in this article. The achievement of this article lies in that we successfully use the union of NFA and HTBTS to realize the detection of complex event in massive RFID event stream. Specially, in our scheme, after using NFA to match related primitive events from massive RFID event stream, we use hash table and B+ tree structure to successfully realize the detection of complex event from large matched results above, as a result, these problems existed in current methods above can be effectively solved by our scheme. The simulation results show that our proposed scheme outperforms some general methods for massive RFID event stream.
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Chen, Wei, Qing Li, Jian Bin He et Tao Jin. « A New Method of Complex Maneuvering Event Detection ». Applied Mechanics and Materials 63-64 (juin 2011) : 313–17. http://dx.doi.org/10.4028/www.scientific.net/amm.63-64.313.
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In dealing with such problems as imprecision and poor real-time performance in complex maneuverable events detection. A method based on RFNN (Rough-Fuzzy Neural Network) is proposed. Firstly, the minimal rule sets from data samples are acquired by using the Rough Set Theory; secondly, these rules are used to construct the initial scalar values of neural cells in each layer and their relative parameters in the fuzzy neural network; lastly, parameters of the network are acquired by using BP(back propagation) algorithm. The experimental results indicate that RFNN take advantage of the sample data features effectively, reduce the number of rules, simplify network structure, improve the precision of detection and the performance of real-time.
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Bohnemeyer, Jürgen, et Robert D. Van Valin. « The macro-event property and the layered structure of the clause ». Studies in Language 41, no 1 (1 juin 2017) : 142–97. http://dx.doi.org/10.1075/sl.41.1.05van.
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We ask whether there is a “macro-event phrase,” a uniform level of syntax at which complex scenarios may be described as single events under the Macro-Event Property (MEP). The MEP is a form-meaning mapping property that constrains the compatibility of event descriptions with time-positional modifiers. An examination of English infinitival complements, Ewe serial verb constructions, and Japanese converb constructions suggests that the putative crosslinguistic “macro-event phrase” is the verbal core of the Layered Structure of the Clause theory of Role and Reference Grammar. Across languages, simple cores necessarily have the MEP, whereas complex cores have it if and only if they are integrated by ‘cosubordinate’ nexus, defined as a symmetric union of two cores that together behave like a single core. We furthermore argue that this connection between core cosubordinations and the MEP may help explain why cosubordinate cores seem to always share an argument through control.
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Guo, Rongchun. « News Hotspot Event Diffusion Mechanism Based on Complex Network ». Mathematical Problems in Engineering 2022 (28 mai 2022) : 1–9. http://dx.doi.org/10.1155/2022/1455324.
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The wide range of social hot news events on the Internet has made the Internet have a great impact on the public. However, there are few studies on Internet information. In order to improve the efficiency of user network information dissemination of Internet information based on complex network theory and model simulation, this paper makes a more in-depth study on information dissemination on the Internet, constructs a complex network of Internet information dissemination, and analyzes the static topology and dynamic evolution process of the network. Using the attention relationship between Internet users, the Internet information dissemination network, degree, and path were used to select multiple indicators. The static topology of the network is analyzed by using the complex network theory. The study found that the complex network of Internet information is different from other complex networks. The influencing factors of network dynamic evolution are studied from three aspects: overall structure, local structure, and time constraints. The evolution trend of different forms and overall network nodes in the evolution process was explored, and the network dynamic evolution process model was constructed. Practice shows that the model can better describe the evolution process of network information dissemination in complex networks. The degree values of the two networks are positively correlated with the corresponding average clustering coefficients, and the networks have a significant hierarchy. The correlation between news hot events and network nodes is not as good as users’ attention to the network.
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Greschner, Martin, Andreas Thiel, Jutta Kretzberg et Josef Ammermüller. « Complex Spike-Event Pattern of Transient on-off Retinal Ganglion Cells ». Journal of Neurophysiology 96, no 6 (décembre 2006) : 2845–56. http://dx.doi.org/10.1152/jn.01131.2005.
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on-off transient ganglion cells of the turtle retina show distinct spike-event patterns in response to abrupt intensity changes, such as during saccadic eye movements. These patterns consist of two main spike events, with the latency of each event showing a systematic dependency on stimulus contrast. Whereas the latency of the first event decreases monotonically with increasing contrast, as expected, the second event shows the shortest latency for intermediate contrasts and a longer latency for high and low contrasts. These spike-event patterns improve the discrimination of different light-intensity transitions based on ensemble responses of the on-off transient ganglion cell subpopulation. Although the discrimination results are far better than chance using either spike counts or latencies of the first spikes, they are further improved by using properties of the second spike event. The best classification results are obtained when spike rates and latencies of both events are considered in combination. Thus spike counts and temporal structure of retinal ganglion cells carry complementary information about the stimulus condition, and thus spike-event patterns could be an important aspect of retinal coding. To investigate the origin of the spike-event patterns in retinal ganglion cells, two computational models of retinal processing are compared. A linear–nonlinear model consisting of separate filters for on and off response components fails to reproduce the spike-event patterns. A more complex cascade filter model, however, accurately predicts the timing of the spike events by using a combination of gain control loop and spike rate adaptation.
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Bucchi, Marco, Alejandro Grez, Andrés Quintana, Cristian Riveros et Stijn Vansummeren. « CORE ». Proceedings of the VLDB Endowment 15, no 9 (mai 2022) : 1951–64. http://dx.doi.org/10.14778/3538598.3538615.
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Complex Event Recognition (CER) systems are a prominent technology for finding user-defined query patterns over large data streams in real time. CER query evaluation is known to be computationally challenging, since it requires maintaining a set of partial matches, and this set quickly grows super-linearly in the number of processed events. We present CORE, a novel COmplex event Recognition Engine that focuses on the efficient evaluation of a large class of complex event queries, including time windows as well as the partition-by event correlation operator. This engine uses a novel automaton-based evaluation algorithm that circumvents the super-linear partial match problem: under data complexity, it takes constant time per input event to maintain a data structure that compactly represents the set of partial matches and, once a match is found, the query results may be enumerated from the data structure with output-linear delay. We experimentally compare CORE against state-of-the-art CER systems on real-world data. We show that (1) CORE's performance is stable with respect to both query and time window size, and (2) CORE outperforms the other systems by up to five orders of magnitude on different workloads.
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Nolan, Brian. « Dynamicity in the construal of complex events in Irish English and Modern Irish ». English Text Construction 9, no 1 (20 juin 2016) : 165–89. http://dx.doi.org/10.1075/etc.9.1.09nol.
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In this study we take an ‘above the clause’ perspective on the conceptualisation of complex events of Irish English and Modern Irish within a functional Role and Reference Grammar perspective, using corpus based data. Functional models of language generally assume some layered structure of the clause, the noun phrase and the word. (Nolan 2012a, 2012b; Van Valin 2005). While excellent work has heretofore been achieved at clause level, the description of important linguistic phenomena above the clause has often been somewhat neglected. In this regard, a central part of the grammar of every human language is the encoding of events and their participants in a clause. This motivates an ‘above the clause’ perspective to characterise the balance between uniformity of encoding and variability in encoding within and across languages. In the functional-cognitive paradigm, form and meaning are not separated into self-contained components. Instead, syntactic structures of varying degrees of complexity and abstraction are paired with their corresponding semantic structures. We argue that the interaction of semantic relations with the hierarchy of clausal linkage is at the strongest pole with the semantic relations covering phase and modifying subevents. We also argue that light verb constructions are formed pre-syntactically in the lexicon using and defend this by applying certain criteria as a diagnostic. The function of light verbs in these constructions is to modulate the realisation of event and sub-event semantics into syntax. We provide evidence of the dynamicity in conceptualising a complex event, considered as complex predication across constructions, in Irish English and Modern Irish.
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Yadav, Piyush, Dhaval Salwala, Dibya Prakash Das et Edward Curry. « Knowledge Graph Driven Approach to Represent Video Streams for Spatiotemporal Event Pattern Matching in Complex Event Processing ». International Journal of Semantic Computing 14, no 03 (septembre 2020) : 423–55. http://dx.doi.org/10.1142/s1793351x20500051.
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Complex Event Processing (CEP) is an event processing paradigm to perform real-time analytics over streaming data and match high-level event patterns. Presently, CEP is limited to process structured data stream. Video streams are complicated due to their unstructured data model and limit CEP systems to perform matching over them. This work introduces a graph-based structure for continuous evolving video streams, which enables the CEP system to query complex video event patterns. We propose the Video Event Knowledge Graph (VEKG), a graph-driven representation of video data. VEKG models video objects as nodes and their relationship interaction as edges over time and space. It creates a semantic knowledge representation of video data derived from the detection of high-level semantic concepts from the video using an ensemble of deep learning models. A CEP-based state optimization — VEKG-Time Aggregated Graph (VEKG-TAG) — is proposed over VEKG representation for faster event detection. VEKG-TAG is a spatiotemporal graph aggregation method that provides a summarized view of the VEKG graph over a given time length. We defined a set of nine event pattern rules for two domains (Activity Recognition and Traffic Management), which act as a query and applied over VEKG graphs to discover complex event patterns. To show the efficacy of our approach, we performed extensive experiments over 801 video clips across 10 datasets. The proposed VEKG approach was compared with other state-of-the-art methods and was able to detect complex event patterns over videos with [Formula: see text]-Score ranging from 0.44 to 0.90. In the given experiments, the optimized VEKG-TAG was able to reduce 99% and 93% of VEKG nodes and edges, respectively, with 5.19[Formula: see text] faster search time, achieving sub-second median latency of 4–20[Formula: see text]ms.
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Akili, Samira, et Matthias Weidlich. « Reasoning on the Efficiency of Distributed Complex Event Processing ». Fundamenta Informaticae 179, no 2 (10 mars 2021) : 113–34. http://dx.doi.org/10.3233/fi-2021-2017.
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Complex event processing (CEP) evaluates queries over streams of event data to detect situations of interest. If the event data are produced by geographically distributed sources, CEP may exploit in-network processing that distributes the evaluation of a query among the nodes of a network. To this end, a query is modularized and individual query operators are assigned to nodes, especially those that act as data sources. Existing solutions for such operator placement, however, are limited in that they assume all query results to be gathered at one designated node, commonly referred to as a sink. Hence, existing techniques postulate a hierarchical structure of the network that generates and processes the event data. This largely neglects the optimisation potential that stems from truly decentralised query evaluation with potentially many sinks. To address this gap, in this paper, we propose Multi-Sink Evaluation (MuSE) graphs as a formal computational model to evaluate common CEP queries in a decentralised manner. We further prove the completeness of query evaluation under this model. Striving for distributed CEP that can scale to large volumes of high-frequency event streams, we show how to reason on the network costs induced by distributed query evaluation and prune inefficient query execution plans. As such, our work lays the foundation for distributed CEP that is both, sound and efficient.
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Wang, Yongheng, Xiaozan Zhang et Zengwang Wang. « A Proactive Decision Support System for Online Event Streams ». International Journal of Information Technology & ; Decision Making 17, no 06 (novembre 2018) : 1891–913. http://dx.doi.org/10.1142/s0219622018500463.
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In-stream big data processing is an important part of big data processing. Proactive decision support systems can predict future system states and execute some actions to avoid unwanted states. In this paper, we propose a proactive decision support system for online event streams. Based on Complex Event Processing (CEP) technology, this method uses structure varying dynamic Bayesian network to predict future events and system states. Different Bayesian network structures are learned and used according to different event context. A networked distributed Markov decision processes model with predicting states is proposed as sequential decision making model. A Q-learning method is investigated for this model to find optimal joint policy. The experimental evaluations show that this method works well for congestion control in transportation system.
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Ma, Chi, Wei Chen, Jiaqi Han, Lulu Liu, Zhenhua Zhao et Gang Luo. « Transient Response of a Simulated Aeroengine with a Fusing Structure during a Fan-Blade Out Event ». International Journal of Aerospace Engineering 2021 (11 octobre 2021) : 1–14. http://dx.doi.org/10.1155/2021/8357380.
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A fan-blade out (FBO) event may cause complex vibrations in an aeroengine. A fusing structure protects the structural integrity of the whole aeroengine after an extreme accident, such as a blade-loss event. In this paper, we investigate not only the transient and steady responses of a simulated aeroengine model with a fusing structure after an FBO event but also the changes made to the model because of the fusing structure. Our simulated model of an aeroengine includes two rotors, bearings, and a casing. The results for the dynamic response of the simulated model show that the fusing structure can reduce the steady-state response and the impact load on the support bearings in the rotor system. The rubbing impact between the blades and casing was accounted for. A fast method for calculating the response of fused structures was developed, which may be useful when designing the stiffness of the fusing structure.
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Kello, Christopher T., Simone Dalla Bella, Butovens Médé et Ramesh Balasubramaniam. « Hierarchical temporal structure in music, speech and animal vocalizations : jazz is like a conversation, humpbacks sing like hermit thrushes ». Journal of The Royal Society Interface 14, no 135 (octobre 2017) : 20170231. http://dx.doi.org/10.1098/rsif.2017.0231.
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Humans talk, sing and play music. Some species of birds and whales sing long and complex songs. All these behaviours and sounds exhibit hierarchical structure—syllables and notes are positioned within words and musical phrases, words and motives in sentences and musical phrases, and so on. We developed a new method to measure and compare hierarchical temporal structures in speech, song and music. The method identifies temporal events as peaks in the sound amplitude envelope, and quantifies event clustering across a range of timescales using Allan factor (AF) variance. AF variances were analysed and compared for over 200 different recordings from more than 16 different categories of signals, including recordings of speech in different contexts and languages, musical compositions and performances from different genres. Non-human vocalizations from two bird species and two types of marine mammals were also analysed for comparison. The resulting patterns of AF variance across timescales were distinct to each of four natural categories of complex sound: speech, popular music, classical music and complex animal vocalizations. Comparisons within and across categories indicated that nested clustering in longer timescales was more prominent when prosodic variation was greater, and when sounds came from interactions among individuals, including interactions between speakers, musicians, and even killer whales. Nested clustering also was more prominent for music compared with speech, and reflected beat structure for popular music and self-similarity across timescales for classical music. In summary, hierarchical temporal structures reflect the behavioural and social processes underlying complex vocalizations and musical performances.
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McArdle, Dudley, Caroline Spencer et Frank Archer. « Morwell Coal Mine Fire as a Cascading Disaster : A Case Study ». Prehospital and Disaster Medicine 34, s1 (mai 2019) : s8. http://dx.doi.org/10.1017/s1049023x19000360.
Texte intégralRésumé :
Introduction:Despite the influential Hyogo and Sendai Frameworks, risk remains poorly understood in the emergency preparedness sector. Hazard assessment and risk management are usually considered before events. An alternative view considers risk as a cascade of potential consequences throughout an event. The 2014 fire in the Victorian rural community of Morwell included a three-phased event: a small bush fire, from which embers ignited a persistent fire in a disused open cut brown coal mine fire. The consequent air pollution precipitated a public health emergency in the nearby community of 15,000 people.Aim:To examine this event as a case study to investigate concordance with accepted definitions and key elements of a cascading event.Methods:Selected literature informed a risk cascade definition and model as a framework to examine the key post-event public inquiries available in the public domain.Results:Informed by a Conceptual Framework for a Hazard Evolving into a Disaster (Birnbaum et al., 2015), Wong and colleagues promote a Core Structure of a Comprehensive Framework for Disaster Evaluation Typologies (Wong, 2017). This Core Structure provided an adequate model to examine the sequence of events in the Morwell event. Definitions of cascading effects is more complex (Zuccaro et al., 2018). Our analysis of the Morwell event used the authoritative definition of cascading disasters published by Pescaroli and Alexander (2015). Using this definition, the Morwell event increased in progression over time and generated unexpected secondary events of strong impact. The secondary events could be distinguished from the original source of disaster, and demonstrated failures of physical structures as well as inadequacy of disaster mitigation strategies, while highlighting unresolved vulnerabilities in human society.Discussion:The Morwell coal mine fire of 2014 reflects the key criteria of a cascading disaster and provides understandings to mitigate the consequences of similar events in the future.
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FOLLI, RAFFAELLA, et HEIDI HARLEY. « The syntax of argument structure : Evidence from Italian complex predicates ». Journal of Linguistics 49, no 1 (30 mars 2012) : 93–125. http://dx.doi.org/10.1017/s0022226712000072.
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This paper provides an analysis of Italian complex predicates formed by combining a feminine nominalization in -ata and one of three light verbs: fare ‘make’, dare ‘give’ and prendere ‘take’. We show that the constraints governing the choice of light verb follow from a syntactic approach to argument structure, and that several interpretive differences between complex and simplex predicates formed from the same verb root can be accounted for in a compositional, bottom–up approach. These differences include variation in creation vs. affected interpretations of Theme objects, implications concerning the size of the event described, the (un)availability of a passive alternant, and the agentivity or lack thereof of the subject argument.
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Masquelin, Henri, Hernán Silva Lara, Leda Sánchez Bettucci, Pablo Núñez Demarco, Sofía Pascual, Rossana Muzio, Elena Peel et Fernando Scaglia. « Lithologies, structure and basement-cover relationships in the schist belt of the Dom Feliciano Belt in Uruguay ». Brazilian Journal of Geology 47, no 1 (janvier 2017) : 21–42. http://dx.doi.org/10.1590/2317-4889201720160119.
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ABSTRACT: This work is the result of a multiyear effort to use field geology to describe lithologies, to establish contact relationships and to create a sketch of the tectonic evolution of the Meso- to Neoproterozoic metasedimentary successions within the Schist Belt of the Dom Feliciano Belt. This low-grade metamorphic cover rests on the high-grade metamorphic basement of the La China and Las Tetas complexes. This basement is Archean-Paleoproterozoic in age. The Schist Belt is overlapped unconformably by the Barriga Negra formation. The Lavalleja complex and the Barriga Negra formation both deformed together during the D2 deformation event (~ 570 -540 Ma), but the Barriga Negra only partially recorded the D2 transpressive event, whereas the Lavalleja complex was affected by both the D1 tangential event and the D2 event. Event D1 would have developed a fold nappe with vergence to the south. This hypothesis is supported by different structures: (i) recumbent and upright folds oriented E-W, (ii) subhorizontal mylonitic foliation in marbles (calc-schists), (iii) stretching lineations plunging towards the SW in metaconglomerates of the Las Tetas Complex, and (iv) a reworking of the subhorizontal foliation parallel to the Sarandí del Yí strike-slip shear zone.
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Bloch-Trojnar, Maria. « Simple Event nominals with Argument Structure ? – Evidence from Irish deverbal nominalizations1 ». Zeitschrift für Wortbildung / Journal of Word Formation 4, no 2 (1 janvier 2020) : 143–63. http://dx.doi.org/10.3726/zwjw.2020.02.08.
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Abstract Deverbal nominals in Irish support Grimshaw’s (1990) tripartite division into complex event (CE-), simple event (SE-) and result nominals (R-nominals). Irish nominals are ambiguous only between the SE- and R-status. There are no CE-nominals containing the AspP layer in their structure. SE-nominals (also found in Light Verb Constructions) are number-neutral and incapable of pluralizing and are represented as [nP[vP[Root]]]. R-nominals are devoid of the vP layer and behave like ordinary nouns. The Irish data point to v as the layer introducing event implications and the vP or PPs as the functional heads introducing the internal argument (Alexiadou and Schäfer 2011). Event denoting nominals in Irish can license the internal argument but aspectual modification and external argument licensing are not possible (cf. synthetic compounds in Greek (Alexiadou 2017)), which means that, counter to Borer (2013), the licensing of Argument Structure need not follow from the presence of the AspP layer.
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Hilpert, Martin, et Christian Koops. « A quantitative approach to the development of complex predicates ». Diachrony of Complex Predication 25, no 2 (8 septembre 2008) : 242–61. http://dx.doi.org/10.1075/dia.25.2.06hil.
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This paper traces the historical development of the Swedish Pseudo-Coordination construction with the posture verb sitta “sit”. In Swedish a small number of verbs, including posture verbs such as sitta, are used in coordination with another verb to convey that the described event has an extended duration or is in progress. Quantitative evidence from Swedish historical corpora suggests that the construction has, even after it established itself as a grammatical construction, undergone a number of gradual changes in the course of the past five centuries. As part of the Pseudo-Coordination construction, the verb sitta has changed its argument structure, and the entire construction has increased in syntactic cohesion.
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Golosov, F. V. « Event structure of complex predicates with the light verb lart ‘seat, put’ in Poshkart Chuvash ». Acta Linguistica Petropolitana XVII, no 1 (2021) : 406–40. http://dx.doi.org/10.30842/alp23065737171406440.
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Ahmed, Amer, et Iryna Lenchuk. « A dependent case approach to complex event nominals in standard Arabic ». Poznan Studies in Contemporary Linguistics 58, no 3 (1 septembre 2022) : 349–80. http://dx.doi.org/10.1515/psicl-2022-0018.
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Abstract This paper addresses case assignment in Standard Arabic (SA). It shows that the current Agree-based accounts of case in SA are problematic, as they face problems accounting for case assignment in complex event nominals. Using Baker’s (2015) dependent case theory, we argue that there are two modalities of structural case assignment in SA, i.e., the dependent case and the Agree-based case, and that the latter is only available when the former fails to apply. It is also argued that case assignment takes place at Spell Out, the point where phase heads are merged into the structure. We provide evidence that vP in SA is a soft phase and we claim that v in SA is incapable of assigning the accusative case to the object, due to v’s deficiency. We also claim that a DP of the complex nominal type in SA is a hard phase. SA PRO is argued to lack a case feature, and it is therefore neither a proper goal for case in the Agree-based case mechanism, nor is it a proper case trigger/competitor in the dependent case mechanism. We believe that the proposed account solves the problems that previous accounts of case in SA face.
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Peruzzi, Antonio, Fabiana Zollo, Walter Quattrociocchi et Antonio Scala. « How News May Affect Markets’ Complex Structure : The Case of Cambridge Analytica ». Entropy 20, no 10 (6 octobre 2018) : 765. http://dx.doi.org/10.3390/e20100765.
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The claim of Cambridge Analytica, a political consulting firm, that it was possible to influence voting behavior by using data mined from the social platform Facebook created a sudden fear in its users of being manipulated; consequently, even the market price of the social platform was shocked.We propose a case study analyzing the effect of this data scandal not only on Facebook stock price, but also on the whole stock market. To such a scope, we consider 15-minutes prices and returns of the set of the NASDAQ-100 components before and after the Cambridge Analytica case. We analyze correlations and Mutual Information among components finding that assets become more correlated and their Mutual Information grows higher. We also observe that correlation and Mutual Information are mutually increasing and seem to follow a master curve. Hence, the market appears more fragile after the Cambridge Analytica event. In fact, as it is well-known in finance, an increase in the average value of correlations augments the systemic risk (i.e., all the market can collapse as a whole) and decreases the possibility of allocating a safe investment portfolio.
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Matsumoto, Yo. « On the Lexical Nature of Purposive and Participial Complex Motion Predicates in Japanese ». Annual Meeting of the Berkeley Linguistics Society 17, no 1 (25 juillet 1991) : 180. http://dx.doi.org/10.3765/bls.v17i0.1619.
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George Thomas, K. « Functionalized Fullerenes as Photosynthetic Mimics ». Electrochemical Society Interface 8, no 4 (1 décembre 1999) : 30–32. http://dx.doi.org/10.1149/2.f05994if.
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Photo-induced electron transfer is an important primary event in many chemical and biological systems. In bacterial photosynthesis, the early events involve the trapping of sunlight by antenna complexes, a protein structure containing several bacteriochlorophylls. The singlet excitation energy is then transferred to another membrane-bound protein pigment complex called the reaction center.
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Jiang, Xingda, Wei Zhang, Hui Yang, Chaofeng Zhao et Zixuan Wang. « Transdimensional simultaneous inversion of velocity structure and event locations in downhole microseismic monitoring ». GEOPHYSICS 87, no 1 (18 novembre 2021) : KS1—KS16. http://dx.doi.org/10.1190/geo2021-0182.1.
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In downhole microseismic monitoring, the velocity model plays a vital role in accurate mapping of the hydraulic fracturing image. For velocity model uncertainties in the number of layers or interface depths, the conventional velocity calibration method has been shown to effectively locate the perforation shots; however, it introduces nonnegligible location errors for microseismic events, especially for complex geologic formations with inclinations. To improve the event location accuracy, we have exploited the advantages of the reversible jump Markov chain Monte Carlo approach in generating different dimensions of velocity models and adopted a transdimensional Bayesian simultaneous inversion framework for obtaining the effective velocity structure and event locations simultaneously. The transdimensional inversion changes the number of layers during the inversion process and selects the optimal interface depths and velocity values to improve the event location accuracy. The confidence intervals of the simultaneous inversion event locations estimated by Bayesian inference enable us to evaluate the location uncertainties in the horizontal and vertical directions. Two synthetic examples and a field test are presented to illustrate the performance of our methodology, and the event location accuracy is shown to be higher than that obtained using the conventional methods. With less dependence on prior information, our transdimensional simultaneous inversion method can be used to obtain an effective velocity structure for facilitating highly accurate hydraulic fracturing mapping.
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Schiffer, Christian, Alexander Peace, Jordan Phethean, Laurent Gernigon, Ken McCaffrey, Kenni D. Petersen et Gillian Foulger. « The Jan Mayen microplate complex and the Wilson cycle ». Geological Society, London, Special Publications 470, no 1 (1 février 2018) : 393–414. http://dx.doi.org/10.1144/sp470.2.
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AbstractThe opening of the North Atlantic region was one of the most important geodynamic events that shaped the present day passive margins of Europe, Greenland and North America. Although well-studied, much remains to be understood about the evolution of the North Atlantic, including the role of the Jan Mayen microplate complex. Geophysical data provide an image of the crustal structure of this microplate and enable a detailed reconstruction of the rifting and spreading history. However, the mechanisms that cause the separation of microplates between conjugate margins are still poorly understood. We assemble recent models of rifting and passive margin formation in the North Atlantic and discuss possible scenarios that may have led to the formation of the Jan Mayen microplate complex. This event was probably triggered by regional plate tectonic reorganizations rejuvenating inherited structures. The axis of rifting and continental break-up and the width of the Jan Mayen microplate complex were controlled by old Caledonian fossil subduction/suture zones. Its length is related to east–west-oriented deformation and fracture zones, possibly linked to rheological heterogeneities inherited from the pre-existing Precambrian terrane boundaries.
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Shi, Ruisheng, Yang Zhang, Lina Lan, Fei Li et Junliang Chen. « Summary Instance : Scalable Event Priority Determination Engine for Large-Scale Distributed Event-Based System ». International Journal of Distributed Sensor Networks 2015 (2015) : 1–14. http://dx.doi.org/10.1155/2015/390329.
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Data prioritization problem is paramount for distributed publish/subscribe infrastructure to the timely delivery of real-time events since a large number of low priority events may clog the channel thereby causing high priority events to get delayed. The challenge raised for the event-based middleware in large-scale distributed system such as vehicular ad hoc networks is that event priority determination engine must be efficient and scalable in terms of priority rule size and event throughputs. This paper proposes an innovative approach based on Bloom filter and event discretization. A Bloom filter data structure is used to store the rule instances and their priorities. The complex rule evaluation is reduced to set membership testing as queries on Bloom filters. The time complexity of data prioritization is constant and independent of the number of priority rules. As event discretization signatures can be cached, this approach is cache friendly in nature. The previous computation results can be cached in overlay network nodes and reused to improve the system throughputs and determination time. We have evaluated our proposed approach and the results show a significant performance improvement.
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Nolan, Brian. « Complex predicates and light verb constructions in Modern Irish ». Revista Española de Lingüística Aplicada/Spanish Journal of Applied Linguistics 27, no 1 (8 août 2014) : 140–67. http://dx.doi.org/10.1075/resla.27.1.06nol.
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This paper characterises complex predicates and light verb constructions in Modern Irish. Light verbs are attested in many of the world’s languages (Alsina, Bresnan & Sells, 2001; Butt, 1995, 2003). Cross linguistically, there appears to be a common class of verbs involved in these constructions and generally there is agreement that light verbs contribute to the formation of complex predicates. Light verbs seem have a non-light or ‘heavy’ verb counterpart. In this paper we discuss the light verb constructions (LVC) as found in modern Irish and how they form complex predicates. We claim that the light verb (LV) encodes the event process initiation (or cause) and the matrix verb indicates the bounded component or result. In light verb constructions, the matrix verb appears in Modern Irish syntax as a verbal-noun form. The function of light verbs in these constructions is to modulate the event and sub-event semantics. We distinguish between auxiliary verbs constructions (AVC) and those constructions involving complex predicated and light verbs (Aikhenvald & Dixon, 2006; Anderson, 2006). We provide evidence based on an analysis of Irish data that shows how aspect and argument structure considerations are resolved for the complex predicate within the light verb construction via the linking system between semantics and syntax. We motivate a functional account, based on Role and Reference Grammar (Nolan, 2012; Nolan & Diedrichsen, 2013; Van Valin, 2005; Van Valin & LaPolla, 1997), that appeals to the analysis of complex predicates within a consideration of the layered structure of the clause.
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Schoffman, Hanan, William M. Brown, Yossi Paltiel, Nir Keren et Erik M. Gauger. « Structure-based Hamiltonian model for IsiA uncovers a highly robust pigment–protein complex ». Journal of The Royal Society Interface 17, no 169 (août 2020) : 20200399. http://dx.doi.org/10.1098/rsif.2020.0399.
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The iron stress-induced protein A (IsiA) is a source of interest and debate in biological research. The IsiA supercomplex, binding over 200 chlorophylls, assembles in multimeric rings around photosystem I (PSI). Recently, the IsiA–PSI structure from Synechocystis sp. PCC 6803 was resolved to 3.48 Å. Based on this structure, we created a model simulating a single excitation event in an IsiA monomer. This model enabled us to calculate the fluorescence and the localization of the excitation in the IsiA structure. To further examine this system, noise was introduced to the model in two forms—thermal and positional. Introducing noise highlights the functional differences in the system between cryogenic temperatures and biologically relevant temperatures. Our results show that the energetics of the IsiA pigment–protein complex are very robust at room temperature. Nevertheless, shifts in the position of specific chlorophylls lead to large changes in their optical and fluorescence properties. Based on these results, we discuss the implication of highly robust structures, with potential for serving different roles in a context-dependent manner, on our understanding of the function and evolution of photosynthetic processes.
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Muzy, Alexandre, et Bernard P. Zeigler. « Specification of dynamic structure discrete event systems using single point encapsulated control functions ». International Journal of Modeling, Simulation, and Scientific Computing 05, no 03 (5 mai 2014) : 1450012. http://dx.doi.org/10.1142/s1793962314500123.
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In Discrete Event System Specification (DEVS), the dynamics of a network is constituted only by the dynamics of its basic components. The state of each component is fully encapsulated. Control in the network is fully decentralized to each component. At dynamic structure level, DEVS should permit the same level of decentralization. However, it is hard to ensure structure consistency while letting all components achieve structure changes. Besides, this solution can be complex to implement. To avoid these difficulties, usual dynamic structure approaches ensure structure consistency allowing structure changes to be done only by the network having newly added dynamics change capabilities. This is a safe and simple way to achieve dynamic structure. However, it should be possible to simply allow components of a network to modify the structure of their network, other components and/or their own structure — without having to modify the usual definition a DEVS network. In this manuscript, it is shown that a simple fully decentralized approach is possible while ensuring full modularity and structure consistency.
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Murzina, Ol'ga Viktorovna. « Peculiarities of the structure of the headline complex in the youth sports media ». Филология : научные исследования, no 8 (août 2021) : 14–21. http://dx.doi.org/10.7256/2454-0749.2021.8.36216.
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This article reviews the headline structure on the online news portals that are dedicated to sport events. The object of this research is a typical model of heading complex, while the subject is the specificity of text heading strategy during a notable sport event, such as the Olympic Games in Tokyo. The article employs the method of continuous sampling of headlines, classification and interpretation of the acquired material, comparative analysis, as questionnaire-based survey of young journalists – students of the faculty of Journalism. The answers of respondents indicated that these information portals have become a traineeship for the students majoring in sports journalism. The novelty of this article is defined by the following factors: most common headline structure on the sports information portals consists of two simple sentences; there are four types of relationships between the parts of headline. The author determines the reason for the dominance of the two-part headline complex: on the one hand, it is explained by the general evolution of headlines of the Internet media – from drawing attention towards purely informative, which virtually replaces reading of the material. On the analyzed Internet portals, this is complemented by the tendency towards copying the structure of the post in social media: the image and short description it, which can unfold to a larger text upon the desire of the reader. It is assumed that namely the prevalence of young journalists in sports media and the focus on young audience that follows sports events t leads to the increase of headlines of such type.
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Murton, Olivia, Lauryn Zipse, Nori Jacoby et Stefanie Shattuck-Hufnagel. « Repetition and a Beat-Based Timing Framework : What Determines the Duration of Intervals Between Repetitions of a Tapping Pattern ? » Timing & ; Time Perception 5, no 3-4 (8 décembre 2017) : 244–59. http://dx.doi.org/10.1163/22134468-00002095.
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The production of speech and music are two human behaviors that involve complex hierarchical structures with implications for timing. Timing constraints may arise from a human proclivity to form ‘self-organized’ metrical structures for perceived and produced event sequences, especially those that involve repetition. To test whether the propensity to organize events in time arises even for simple motor behaviors, we developed a novel experimental tapping paradigm investigating whether participants use the beat structure of a tapped pattern to determine the interval between repetitions. Participants listened to target patterns of 3, 4, or 5 events, occurring at one of four periodic rates, and tapped out the pattern 11 times, creating 10 inter-pattern intervals (IPIs), which participants chose freely. The ratio between mean IPI and mean inter-tap interval (ITI) was used to measure the beat-relatedness of the overall timing pattern; the closer this ratio is to an integer, the more likely the participant was timing the IPI to match a multiple of the target pattern beat. Results show that a beat-based strategy contributes prominently, although not universally, to IPI duration. Moreover, participants preferred interval cycles with even numbers of beats, especially cycles with four beats. Finally, the IPI/ITI ratio was affected by rate, with more beats of silence for the IPI at faster rates. These findings support the idea that people can generate a larger global timing structure when engaging in the repetition of simple periodic motor patterns, and use that structure to govern the timing of those motor events.
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Geoltrain, Sébastien, et Jean Brac. « Can we image complex structures with first‐arrival traveltime ? » GEOPHYSICS 58, no 4 (avril 1993) : 564–75. http://dx.doi.org/10.1190/1.1443439.
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We experienced difficulties when attempting to perform seismic imaging in complex velocity fields using prestack Kirchhoff depth migration in conjunction with traveltimes computed by finite‐differencing the eikonal equation. The problem arose not because of intrinsic limitations of Kirchhoff migration, but rather from the failure of finite‐differencing to compute traveltimes representative of the energetic part of the wavefield. Further analysis showed that the first arrival is most often associated with a marginally energetic event wherever subsequent arrivals exist. The consequence is that energetic seismic events are imaged with a kinematically incorrect operator and turn out mispositioned at depth. We therefore recommend that first‐arrival traveltime fields, such as those computed by finite‐differencing the eikonal equation, be used in Kirchhoff migration only with great care when the velocity field hosts multiple transmitted arrivals; such a situation is typically met where geological structure creates strong and localized velocity heterogeneities, which partition the incident and reflected wavefields into multiple arrivals; in such an instance, imaging cannot be strictly considered a kinematic process, as it must be performed with explicit reference to the relative amplitudes of multiple arrivals.
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Shonk, David J., et Gonzalo Bravo. « Interorganizational Support and Commitment : A Framework for Sporting Event Networks ». Journal of Sport Management 24, no 3 (mai 2010) : 272–90. http://dx.doi.org/10.1123/jsm.24.3.272.
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Sporting event networks are complex partnerships providing scope for investigation at multiple levels of analysis, including interpersonal, interorganizational, and field level. Based on an integration of the literature on interorganizational relationships, perceived organizational support, and interorganizational commitment, the paper proposes a conceptual model applicable to sporting event networks wherein perceived interorganizational support (PIOS) influences perceived interorganizational commitment (PIOC). The level of PIOS is indicated by six salient factors: trust, resources, structure, prior ties, reputation, and legitimacy.
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Bazhenova, Elena A., et Ekaterina E. Dymont. « Plotand Event-Driven Functions of Perfect Verbs in a Fiction Text ». Vestnik Tomskogo gosudarstvennogo universiteta, no 468 (2021) : 5–14. http://dx.doi.org/10.17223/15617793/468/1.
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The article examines the role of Russian perfect verbs in text formation. Based on the texts of modern Russian writers (S. Vasilenko, D. Granin, E. Limonov, V. Pelevin, T. Tolstaya, V. Tokareva, L. Ulitskaya), the functions of the verb forms with perfect meaning in the plot organization of a fiction text are considered. The principal attention is paid to the analysis of the functions of 1) regression of the narrative, 2) progress of the narrative with a pause in the external environment or in the inner world of the character, 3) pause in the narrative. Narrative regression is interpreted as a reference to the past, progress as a perspective of the narrative, and pause as a fixation of the state of the environment or the internal state of the character. It has been established that these functions are realized within the framework of a perfect situation as a functional-semantic field. The nucleus of the field is a perfect verb or passive past participles; the periphery of the field is formed by multi-level language units that actualize the perfect meaning in the context. It has been revealed that the perfect situation has a complex semantic structure, in which three components are holistically represented: pre-perfect state, action, and post-perfect state. This structure allows expressing different types of links: between the temporal plans of the text, between the cause of an event and the consequent state of the event, between a mental action and the object of this action. In a fiction text, each component of syncretic perfect semantics can become a basis for the plot situation. It has been shown that plot- and event-driven functions of perfect verbs are determined by the position of the verb in the complex syntactic whole, by interaction with other predicates, by the syntactic structure, and by the lexical meaning of the verb. In particular, it has been established that the function of regression of the narrative is represented by perfect verbs as a part of complex sentences with temporal, causal, and deliberative subordinate clauses. The function of progress of the narrative with a pause in the external environment is performed by perfect verbs inside a complex syntactic whole. This function may also be realized on the border of two complex syntactic wholes. Progress of the narrative with a pause in the inner world of the character is expressed by mental verbs (ponyal, dogadalsya, osoznal, pochuvstvoval, reshil, etc.). A pause in the narrative is typically expressed by passive past participles. The contextual and semantic analysis of perfect situations allows concluding that perfect verbs have an impact on encoding and decoding of the meaning of the fiction text.
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A, Shemala Vasantha. « Social Structure and Reactions in the Works of Kanmani Gunasekaran ». International Research Journal of Tamil 4, S-3 (16 juillet 2022) : 181–86. http://dx.doi.org/10.34256/irjt22s328.
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Literature is the instrument for recording the emotions of mankind. Human happiness and suffering are seen to be subject to the governance of society. Even the preferred sentiments are forgotten or made to be forgotten by society, which is the controlling instrument of every event in human life. Due to this, the man is affected psychologically. As a reaction to this, he suffers from mental conflict. Innovations are being created in Tamil focusing on this art. In this way, Kanmani Gunasekaran has become a remarkable person for creating novels that contain the miseries found in society. This article explores many psychological reactions can be felt in her novels, from mental struggle to the Oedipus complex.
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Kurnosov, A. « Predictive Temporal Analytics Method in Situational Modeling of the Evolution of Complex Systems ». Journal of Physics : Conference Series 2131, no 3 (1 décembre 2021) : 032026. http://dx.doi.org/10.1088/1742-6596/2131/3/032026.
Texte intégralRésumé :
Abstract The article discusses the main characteristics of complex systems, as well as the structures, domains and interactions occurring in the course of evolution. The main properties of complex systems are defined to include openness, non-ergodicity, disequilibrium, activity and multiplicity of goals. The classification attributes are defined to include free energy, anthropic factor, incomplete observability, computational irreducibility, dominant coded interactions, dynamic structure and transformable environments. A variety of primary entities, which form complex systems, are represented by two classes, possible individuals and abstract individuals. The space-time structure as a 6D continuum is formulated; spatial and temporal vacuums and quanta of interaction are defined. The three-dimensional time is presented in terms of three orthogonal components: coordinate time, structural time and discrete time. The coordinate time corresponds to the variability of a system when individuals move in space; the structural time corresponds to the variability of a system when the structure of individuals changes; the discrete time corresponds to the variability of the system caused by informational interaction between or within individuals. A model of a one-time ideal event and a continuous event is defined. The interaction between individuals is presented through a two-way reflexive model of cyclic interaction of an actor and an acceptor. The occurrence of post-causes and post-effects of physical interactions is shown to result in unpredictable chains of effects. The essence of the predictive temporal analytics method is presented. The use of the method involves the construction of a six-dimensional hypergraph of cause-and-effect relations with subsequent analysis of a body of causes and effects. The optimal way of evolution of a system is considered a way that maximizes diversity (in terms of liberty of actions, states, goals achieved) and minimizes the energy costs in a certain time perspective.
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Rong, Liwei, Chen Liang, Mayla Hsu, Xiaofeng Guo, Bernard P. Roques et Mark A. Wainberg. « HIV-1 Nucleocapsid Protein and the Secondary Structure of the Binary Complex Formed between tRNALys.3and Viral RNA Template Play Different Roles during Initiation of (−) Strand DNA Reverse Transcription ». Journal of Biological Chemistry 276, no 50 (15 octobre 2001) : 47725–32. http://dx.doi.org/10.1074/jbc.m105124200.
Texte intégralRésumé :
In human immunodeficiency virus type 1 (HIV-1), the tRNALys.3primer and viral RNA template can form a specific complex that is characterized by extensive inter- and intramolecular interactions. Initiation of reverse transcription from this complex has been shown to be distinguished from subsequent elongation by early pausing events, such as at the +1 and +3 nucleotide positions. One major concern regarding the biological relevance of these results is that most kinetic studies of HIV-1 reverse transcription have been performed using tRNALys.3-viral (v) RNA complexes that were formed by heat annealing. In contrast, tRNALys.3in viruses is placed onto the primer binding site by nucleocapsid (NC) sequences of the Gag protein. In this study, we have further characterized the initiation features of reverse transcription in the presence of HIV-1 NC protein. In contrast to results obtained with a heat-annealed tRNALys.3·vRNA complex, we found that polymerization reactions catalyzed by HIV-1 reverse transcriptase did not commonly pause at the +1 nucleotide position when a NC-annealed RNA complex was used, and that this was true regardless whether NC was actually still present during reverse transcription. This activity of NC required both zinc finger motifs, as demonstrated by experiments that employed zinc finger-mutated forms of NC protein (H23C NC and ddNC), supporting the involvement of the zinc fingers in the RNA chaperone activity of NC. However, NC was not able to help reverse transcriptase to escape the +3 pausing event. Mutagenesis of a stem structure within the tRNALys.3. vRNA complex led to disappearance of the +3 pausing event as well as to significantly reduced rates of reverse transcription. Thus, this stem structure is essential for optimal reverse transcription, despite its role in promotion of the +3 pausing event.