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Background: Men's Olympic boxing follows a regulatory temporal structure, but previous studies have shown that this structure varies during competitions. However, these investigations have not thoroughly analyzed the differences in bout development according to weight category. Additionally, most studies have focused on a limited number of categories, leaving gaps in the temporal analysis of various categories. Aim: To determine the temporal structure in the featherweight, lightweight, welterweight, light heavyweight, and heavyweight categories of men's Olympic boxing, in order to establish models that can help adjust training to meet competitive demands. Methods: An observational approach was used, analyzing 73 bouts involving 80 boxers who competed in the 2020 Tokyo Olympic Games. Results: Most bouts ended after the completion of the full regulation time across all categories. The most common actions were short punching sequences (two to five punches), occurring mainly in the center of the ring. Differences between weight categories were minimal, with the welterweight category showing the most variability. Conclusion: This study presents temporal models that will help coaches and boxers adjust their training with greater precision, improving the efficiency of training sessions according to competitive objectives. [ABSTRACT FROM AUTHOR]

Research on corporate sustainability has started to acknowledge the role of temporality in creating more sustainable organizations. Yet, these advances tend to treat firms as monolithic and we have little understanding of how different temporal patterns throughout an organization shape perceptions of and actions toward sustainability. Building on studies highlighting how the temporal structures of work shape employee engagement with different organizational processes and issues, we seek to answer: How does the temporality of work practices structure perceptions of corporate sustainability throughout the firm? Using data from an ethnography of a small European sustainable bank, we provide an account of the variety of ways in which employees in different departments perceive the bank and how they engage with sustainability. We then go on to show how the temporal structures of work practices within different departments help explain some divergence in perceptions of sustainability. Our study highlights the variegation of temporal structures in organizational processes of meaning-making and its role for a better understanding of the efforts to make corporations more sustainable. [ABSTRACT FROM AUTHOR]

Many experiences unfold predictably over time. Memory for these temporal regularities enables anticipation of events multiple steps into the future. Because temporally predictable events repeat over days, weeks, and years, we must maintain—and potentially transform—memories of temporal structure to support adaptive behavior. We explored how individuals build durable models of temporal regularities to guide multistep anticipation. Healthy young adults (Experiment 1: N = 99, age range = 18–40 years; Experiment 2: N = 204, age range = 19–40 years) learned sequences of scene images that were predictable at the category level and contained incidental perceptual details. Individuals then anticipated upcoming scene categories multiple steps into the future, immediately and at a delay. Consolidation increased the efficiency of anticipation, particularly for events further in the future, but diminished access to perceptual features. Further, maintaining a link-based model of the sequence after consolidation improved anticipation accuracy. Consolidation may therefore promote efficient and durable models of temporal structure, thus facilitating anticipation of future events. [ABSTRACT FROM AUTHOR]

The idea that mental events unfold over time with an intrinsically paced regularity has a long history within experimental psychology, and it has gained traction from the actual measurement of brain rhythms evident in EEG signals recorded from the human brain and from direct recordings of action potentials and local field potentials within the nervous systems of nonhumans. The weak link in this idea, however, is the challenge of extracting signatures of this temporal structure from behavioral measures. Because there is nothing in the seamless stream of conscious awareness that belies rhythmic modulations in sensitivity or mental acuity, one must deploy inferential strategies for extracting evidence for the existence of temporal regularities in neural activity. We have devised a parametric procedure for analysis of temporal structure embedded in behaviorally measured data comprising durations. We confirm that this procedure, dubbed PATS, achieves comparable results to those obtained using spectral analysis, and that it outperforms conventional spectral analysis when analyzing human response time data containing just a few hundred data points per condition. PATS offers an efficient, sensitive means for bridging the gap between oscillations identified neurophysiologically and estimates of rhythmicity embedded within durations measured behaviorally. [ABSTRACT FROM AUTHOR]

How we perceive the physical world is not only organized in terms of objects, but also structured in time as sequences of events. This is especially evident in intuitive physics, with temporally bounded dynamics such as falling, occlusion, and bouncing demarcating the continuous flow of sensory inputs. While the spatial structure and attentional consequences of physical objects have been well-studied, much less is known about the temporal structure and attentional consequences of physical events in visual perception. Previous work has recognized physical events as units in the mind, and used presegmented object interactions to explore physical representations. However, these studies did not address whether and how perception imposes the kind of temporal structure that carves these physical events to begin with, and the attentional consequences of such segmentation during intuitive physics. Here, we use performance-based tasks to address this gap. In Experiment 1, we find that perception not only spontaneously separates visual input in time into physical events, but also, this segmentation occurs in a nonlinear manner within a few hundred milliseconds at the moment of the event boundary. In Experiment 2, we find that event representations, once formed, use coarse "look ahead" simulations to selectively prioritize those objects that are predictively part of the unfolding dynamics. This rich temporal and predictive structure of physical event representations, formed during vision, should inform models of intuitive physics. Public Significance Statement: Despite the continuous flow of sensory inputs, our perceptual experiences are deeply structured in space in terms of objects and in time in terms of events. In many ways, most research in visual perception has focused on half of this structure: objects. To help reveal the structure of the other half, we turn to intuitive physics—our ability to see and predict how scenes react to forces—where events are especially evident. In intuitive physics, we do not just see objects with certain physical properties occupying certain places, but we experience dynamic patterns of interactions, for example, falling, colliding, bouncing, and entering and exiting containers. In two experiments with human observers, we synthesize methods and theories across the studies of attention, music cognition, seeing, and thinking, and find that the visual system spontaneously marks physical events at subsecond timescales and prioritizes objects relevant to the ongoing event. [ABSTRACT FROM AUTHOR]

Copyright of Anadolu University Journal of Art & Design / Sanat & Tasarım is the property of Anadolu University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Weakly supervised temporal video grounding focuses on localizing the temporal moment or segment corresponding to a sentence query in an untrimmed, long video with only video-level annotations. However, due to the lack of ground moment annotation, current methods suffer from several issues, such as the uncertainty of event starting/ending points and incomplete semantic matching with the sentence. Based on these challenges, we innovate our model. To reduce learning uncertainty and localize the moment more accurately, we calculate the matching score curve between each video frame and the sentence query. Using this matching score curve, we create pseudo ground truth to supervise the localization network. To achieve complete semantic matching with the sentence semantics, we propose a semantic prediction module based on matched video-sentence pairs and a semantic contrastive training strategy for unmatched pairs. Lastly, to improve model accuracy, we construct several contrastive samples that contain similar but different semantics in the semantic contrastive training strategy. This helps in learning different semantics and achieving complete semantic matching. We conduct extensive experiments on the Charades-STA, ActivityNet Captions, and DiDeMo datasets. The results demonstrate that our proposed method significantly outperforms the state-of-the-art by more than 10% in terms of mean Intersection over Union (mIoU) when ranging from 0.6 to 0.8, and by more than 30% when IoU equals 0.7. The code is publicly available at https://github.com/anonymousabca/WLML.

Background: Men’s Olympic boxing follows a regulatory temporal structure, but previous studies have shown that this structure varies during competitions. However, these investigations have not thoroughly analyzed the differences in bout development according to weight category. Additionally, most studies have focused on a limited number of categories, leaving gaps in the temporal analysis of various categories. Aim: To determine the temporal structure in the featherweight, lightweight, welterweight, light heavyweight, and heavyweight categories of men’s Olympic boxing, in order to establish models that can help adjust training to meet competitive demands. Methods: An observational approach was used, analyzing 73 bouts involving 80 boxers who competed in the 2020 Tokyo Olympic Games. Results: Most bouts ended after the completion of the full regulation time across all categories. The most common actions were short punching sequences (two to five punches), occurring mainly in the center of the ring. Differences between weight categories were minimal, with the welterweight category showing the most variability. Conclusion: This study presents temporal models that will help coaches and boxers adjust their training with greater precision, improving the efficiency of training sessions according to competitive objectives.

Temporal convolutions have been the paradigm of choice in action segmentation, which enhances long-term receptive fields by increasing convolution layers. However, deep convolution layers cause a loss of local information required for frame recognition. To solve the above problem, a new encoder-decoder structure is proposed in this paper, called Cross-Enhancement Transformer. Our approach can be effective learning of temporal structure representation with interactive self-attention mechanism and concatenate each layer convolutional feature maps in encoder with a set of features in decoder produced via self-attention. Therefore, local and global information are excavated in a series of frame actions simultaneously. In addition, a new loss function is proposed to enhance the training process whick can penalize over-segmentation errors. Experiments show that our framework performs state-of-the-art on three challenging datasets: 50Salads, Georgia Tech Egocentric Activities and the Breakfast dataset. Codes are available at https://github.com/Wangjhdeveloper/CETNet. [ABSTRACT FROM AUTHOR]

The relationship between integration and awareness is central to contemporary theories and research on consciousness. Here, we investigated whether and how information integration over time, by incorporating the underlying regularities, contributes to our awareness of the dynamic world. Using binocular rivalry, we demonstrated that structured visual streams, constituted by shape, motion, or idiom sequences containing perceptual‐ or semantic‐level regularities, predominated over their nonstructured but otherwise matched counterparts in the competition for visual awareness. Despite the apparent resemblance, a substantial dissociation of the observed rivalry advantages emerged between perceptual‐ and semantic‐level regularities. These effects stem from nonconscious and conscious temporal integration processes, respectively, with the former but not the latter being vulnerable to perturbations in the spatiotemporal integration window. These findings corroborate the essential role of structure‐guided information integration in visual awareness and highlight a multi‐level mechanism where temporal integration by perceptually and semantically defined regularities fosters the emergence of continuous conscious experience. [ABSTRACT FROM AUTHOR]

The study describes elements of the daily spatial and time systems relating to online home-based primary education during the pandemic school closures. It was conducted from the children's perspective (semi-structured interviews with children), which is only marginally discussed in research on the effects of home-based education during the COVID-19 pandemic. The data were analysed using thematic analysis. The spatial recontextualization of the household and home, brought about through the transference of school functions to the home environment, cannot be viewed in isolation from the temporal recontextualization. The results point to a fundamental shift in the nature and functionality of educational space and time during the pandemic school closures and online home-based education. It changed not only the home and its time–space structures but also the educational space–time structures. These changes are described and discussed in relation to time-geography concepts and cultural analysis. Moreover, our data show that the children were able to develop strategies for adapting to and coping with the new educational situation and spatial–temporal context during the pandemic-driven shift to home-based education. [ABSTRACT FROM AUTHOR]

During everyday interactions, mothers and infants achieve behavioral synchrony at multiple levels. The ebb-and-flow of mother-infant physical proximity may be a central type of synchrony that establishes a common ground for infant-mother interaction. However, the role of proximity in language exchanges is relatively unstudied, perhaps because structured tasks—the common setup for observing infant-caregiver interactions—establish proximity by design. We videorecorded 100 mothers (U.S. Hispanic N = 50, U.S. Non-Hispanic N = 50) and their 13- to 23-month-old infants during natural activity at home (1-to-2 h per dyad), transcribed mother and infant speech, and coded proximity continuously (i.e., infants and mother within arms reach). In both samples, dyads entered proximity in a bursty temporal pattern, with bouts of proximity interspersed with bouts of physical distance. As hypothesized, Non-Hispanic and Hispanic mothers produced more words and a greater variety of words when within arms reach than out of arms reach. Similarly, infants produced more utterances that contained words when close to mother than when not. However, infants babbled equally often regardless of proximity, generating abundant opportunities to play with sounds. Physical proximity expands opportunities for language exchanges and infants’ communicative word use, although babies accumulate massive practice babbling even when caregivers are not proximal.

Drawing on new media scholarship, the article suggests that Percival Everett's poetry can be understood through the lens of hypergraphical knowledge. In this context, Everett's poetry operates as a synchronic and diachronic exploration of poetic movements, genres, forms, and inheritances, embodying network-temporal relations similar to the hypernarrator(s) of his fiction. Ultimately, this analysis observes the expansive and cohesive nature of Everett's work, inviting readers to refocus their attention on the indeterminate surface of, and the intricate web of meaning in his poetry. [ABSTRACT FROM AUTHOR]

Examining the sequential patterns of self-regulated learning (SRL) behaviors is gaining popularity to understand students’ performance differences. However, few studies have looked at the transition probabilities among different SRL behaviors. Moreover, there is a lack of research investigating the temporal structures of students’ SRL behaviors (e.g., repetitiveness and predictability) and how they related to students’ performance. In this study, 75 students from a top North American university were tasked to diagnose a virtual patient in an intelligent tutoring system. We used recurrence quantification analysis and sequential analysis to analyze the temporal structures and sequential patterns of students’ SRL behaviors. We compared the differences between low and high performers. We found that low performers had more single, isolated recurrent behaviors in problem-solving, whereas the recurrent behaviors of high performers were more likely to be part of a behavioral sequence. High performers also demonstrated a higher transition probability across the three phases of SRL than low performers. In addition, high performers were unique in that their behavioral state transitions were cyclically sustained. This study provided researchers with theoretical insights regarding the cyclical nature of SRL. This study has also methodological contributions to the analysis of the temporal structures of SRL behaviors.

Music is increasingly being used as a therapeutic tool in the field of rehabilitation medicine and psychophysiology. One of the main key components of music is its temporal organization. The characteristics of neurocognitive processes during music perception of meter in different tempo variations technique have been studied by using the event-related potentials technique. The study involved 20 volunteers (6 men, the median age of the participants was 23  years). The participants were asked to listen to 4 experimental series that differed in tempo (fast vs. slow) and meter (duple vs. triple). Each series consisted of 625 audio stimuli, 85% of which were organized with a standard metric structure (standard stimulus) while 15% included unexpected accents (deviant stimulus). The results revealed that the type of metric structure influences the detection of the change in stimuli. The analysis showed that the N200 wave occurred significantly faster for stimuli with duple meter and fast tempo and was the slowest for stimuli with triple meter and fast pace. [ABSTRACT FROM AUTHOR]

Understanding how sedimentary rocks represent time is one of the significant challenges in sedimentology. Sedimentation rates retrieved from vertical sections are strongly timescale dependent, which means that we cannot use empirical rate data derived from vertical sections in modern environments to interpret the temporal structure of ancient sedimentary deposits. We use the Lower to Middle Campanian Blackhawk Formation deposits in eastern Utah and western Colorado as a natural laboratory to test a source‐to‐sink methodology circumventing this timescale dependence by relating modern progradation rates to the deltaic shoreline progradation of ancient siliciclastic rocks. Our objective is to quantify how much time is needed to account for the observed cumulative deltaic shoreline progradation recorded by the shallow‐marine sandstone bodies of the Blackhawk Formation in terms of progradation rates derived from comparable modern deltaic systems. By making the simplifying assumption that the Blackhawk Formation rocks were deposited along a linear coastline that only grew by aggradation and progradation, it is possible to argue that the stratigraphic completeness of two‐dimensional dip‐oriented stratigraphic cross‐sections through these deposits should be high. Furthermore, we hypothesise that delta progradation estimates capture a significant portion of the biostratigraphically and radiometrically constrained duration of the succession. By comparing the recorded progradation with modern progradation rates, we estimate that we need ca. 20% (median value, with minimum and maximum estimates of 2% and 300%) of the time available from biostratigraphic and radiometric dating to account for the progradation recorded by the sedimentary deposits. This indicates that long‐term progradation rates averaged over the entire duration of the Blackhawk Formation were only a factor of five times slower than the modern progradation rates derived from observations over periods that are five to six orders of magnitude shorter. We conclude that a significant amount of time is represented by prograding deltaic shoreline deposits and that by considering the cumulative shoreline progradation, we could limit the effects of timescale dependence on the rate estimates used in our analysis. [ABSTRACT FROM AUTHOR]

Music is increasingly being used as a therapeutic tool in the field of rehabilitation medicine and psychophysiology. One of the main key components of music is its temporal organization. The characteristics of neurocognitive processes during music perception of meter in different tempo variations technique have been studied by using the event-related potentials technique. The study involved 20 volunteers (6 men, the median age of the participants was 23 years). The participants were asked to listen to 4 experimental series that differed in tempo (fast vs. slow) and meter (duple vs. triple). Each series consisted of 625 audio stimuli, 85% of which were organized with a standard metric structure (standard stimulus) while 15% included unexpected accents (deviant stimulus). The results revealed that the type of metric structure influences the detection of the change in stimuli. The analysis showed that the N200 wave occurred significantly faster for stimuli with duple meter and fast tempo and was the slowest for stimuli with triple meter and fast pace.

The structure of event knowledge plays a critical role in prediction, reconstruction of memory for personal events, construction of possible future events, action, language usage, and social interactions. Despite numerous theoretical proposals such as scripts, schemas, and stories, the highly variable and rich nature of events and event knowledge have been formidable barriers to characterizing the structure of event knowledge in memory. We used network science to provide insights into the temporal structure of common events. Based on participants' production and ordering of the activities that make up events, we established empirical profiles for 80 common events to characterize the temporal structure of activities. We used the event networks to investigate multiple issues regarding the variability in the richness and complexity of people's knowledge of common events, including: the temporal structure of events; event prototypes that might emerge from learning across many experiential instances and be expressed by people; the degree to which scenes (communities) are present in various events; the degree to which people believe certain activities are central to an event; how centrality might be distributed across an event's activities; and similarities among events in terms of their content and their temporal structure. Thus, we provide novel insights into human event knowledge, and describe 18 predictions for future human studies. • Human event knowledge is key to many aspects of cognition, perception, and social interaction. • We used network science to provide insights into theoretically central aspects of events. • Included richness of temporal structure, existence of scenes in events, and activity centrality. • Novel network-based approach enabled viewing these issues in new ways. • Investigated similarities among events in terms of their content and their temporal structure. [ABSTRACT FROM AUTHOR]

Precisely timed behavior and accurate time perception plays a critical role in our everyday lives, as our wellbeing and even survival can depend on well-timed decisions. Although the temporal structure of the world around us is essential for human decision making, we know surprisingly little about how representation of temporal structure of our everyday environment impacts decision making. How does the representation of temporal structure affect our ability to generate well-timed decisions? Here we address this question by using a well-established dynamic probabilistic learning task. Using computational modeling, we found that human subjects’ beliefs about temporal structure are reflected in their choices to either exploit their current knowledge or to explore novel options. The model-based analysis illustrates a large within-group and within-subject heterogeneity. To explain these results, we propose a normative model for how temporal structure is used in decision making, based on the semi-Markov formalism in the active inference framework. We discuss potential key applications of the presented approach to the fields of cognitive phenotyping and computational psychiatry. [ABSTRACT FROM AUTHOR]

Event knowledge, a person's understanding of patterns of activities in the world, is crucial for everyday social interactions. Social communication differences are prominent in autism, which may be related to atypical event knowledge, such as atypical knowledge of the sequences of activities that comprise the temporal structure of events. Previous research has found that autistic individuals have atypical event knowledge, but research in this area is minimal, particularly regarding autistic individuals' knowledge of the temporal structure of events. Furthermore, no studies have investigated the link between event knowledge and autistic traits in a non-clinical sample. We investigated relationships between event knowledge and autistic traits in individuals from the general population with varying degrees of autistic traits. We predicted that atypical ordering of event activities is related to autistic traits, particularly social communication abilities, but not other clinical traits. In Study 1, atypical ordering of event activities correlated with social ability, but not with most measures of repetitive behaviours and restricted interests. In Study 2, the typicality of activity ordering varied by participants' social ability and the social nature of the events. Relationships were not found between event activity ordering and other clinical traits. These findings suggest a relationship between autistic traits, specifically social abilities, and knowledge of the temporal structure of events in a general population sample.

Precisely timed behavior and accurate time perception plays a critical role in our everyday lives, as our wellbeing and even survival can depend on well-timed decisions. Although the temporal structure of the world around us is essential for human decision making, we know surprisingly little about how representation of temporal structure of our everyday environment impacts decision making. How does the representation of temporal structure affect our ability to generate well-timed decisions? Here we address this question by using a well-established dynamic probabilistic learning task. Using computational modeling, we found that human subjects' beliefs about temporal structure are reflected in their choices to either exploit their current knowledge or to explore novel options. The model-based analysis illustrates a large within-group and within-subject heterogeneity. To explain these results, we propose a normative model for how temporal structure is used in decision making, based on the semi-Markov formalism in the active inference framework. We discuss potential key applications of the presented approach to the fields of cognitive phenotyping and computational psychiatry.

How to distinguish emotions such as envy, disgust, and shame from sentiments such as love, hate, and adoration? While the standard approach argues that emotions and sentiments differ in terms of their temporal structures (e.g., Ben-ze'ev, 2000; Deonna & Teroni, 2012), this paper sketches an alternative approach according to which each of these states exhibits a distinctive intentional structure. More precisely, this paper argues that emotions and sentiments exhibit distinct forms of affective intentionality. The paper begins by examining the temporal criteria of duration, etiology, and phenomenology widely employed to distinguish between both states. It demonstrates that none of them provides a clear-cut distinction between emotions and sentiments. Next, it presents the intentional approach as an alternative. To this end, it discusses what I call the axiological account (De Monticelli's 2006; 2020), before introducing my version of the intentional approach according to which emotions and sentiments exhibit different forms of affective intentionality. The main findings are summarized in the conclusion. [ABSTRACT FROM AUTHOR]

Abstract Temporal genetic studies of low‐dispersing organisms are rare. Marine invertebrates lacking a planktonic larval stage are expected to have lower dispersal, low gene flow, and a higher potential for local adaptation than organisms with planktonic dispersal. Leptasterias is a genus of brooding sea stars containing several cryptic species complexes. Population genetic methods were used to resolve patterns of fine‐scale population structure in central California Leptasterias species using three loci from nuclear and mitochondrial genomes. Historic samples (collected between 1897 and 1998) were compared to contemporary samples (collected between 2008 and 2014) to delineate changes in species distributions in space and time. Phylogenetic analysis of contemporary samples confirmed the presence of a bay‐localized clade and revealed the presence of an additional bay‐localized and previously undescribed clade of Leptasterias. Analysis of contemporary and historic samples indicates two clades are experiencing a constriction in their southern range limit and suggests a decrease in clade‐specific abundance at sites at which they were once prevalent. Historic sampling revealed a dramatically different distribution of diversity along the California coastline compared to contemporary sampling and illustrates the importance of temporal genetic sampling in phylogeographic studies. These samples were collected prior to significant impacts of Sea Star Wasting Disease (SSWD) and represent an in‐depth analysis of genetic structure over 117 years prior to the SSWD‐associated mass die‐off of Leptasterias.

The across-trial correlation of neurons' coactivity patterns emerges to be important for information coding, but methods for finding their temporal structures remain largely unexplored. In the present study, we propose a method to find time clusters in which coactivity patterns of neurons are correlated across trials. We transform the multidimensional neural activity at each timing into a coactivity pattern of binary states, and predict the coactivity patterns at different timings. We devise a method suitable for these coactivity pattern predictions, call general event prediction. Cross-temporal prediction accuracy is then used to estimate across-trial correlations between coactivity patterns at two timings. We extract time clusters from the cross-temporal prediction accuracy by a modified k-means algorithm. The feasibility of the proposed method is verified through simulations based on ground truth. We apply the proposed method to a calcium imaging dataset recorded from the motor cortex of mice, and demonstrate time clusters of motor cortical coactivity patterns during a motor task. While the existing cosine similarity method, which does not account for across-trial correlation, shows temporal structures only for contralateral neural responses, the proposed method reveals those for both contralateral and ipsilateral neural responses, demonstrating the effect of across-trial correlations. This study introduces a novel method for measuring the temporal structure of neuronal ensemble activity. [Display omitted] • We proposed a method to find temporal structures in neuronal coactivity patterns. • We examined temporal structures based on across-trial correlations. • Across-trial correlation was measured by coactivity event prediction across time. • We applied the proposed method to motor cortical population activity. [ABSTRACT FROM AUTHOR]

Brain waves, determined by electrical and magnetic brain recordings (e.g., EEG and MEG), and fluctuating behavioral responses, determined by response time or accuracy measures, are frequently taken to support discrete perception. For example, it has been proposed that humans experience only one conscious percept per brain wave (e.g., during one alpha cycle). However, the proposed link between brain waves and discrete perception is typically rather vague. More importantly, there are many models and aspects of discrete perception and it is often not apparent in what theoretical framework brain wave findings are interpreted and to what specific aspects of discrete perception they relate. Here, we review different approaches to discrete perception and highlight issues with particular interpretations. We then discuss how certain findings on brain waves may relate to certain aspects of discrete perception. The main purpose of this meta‐contribution is to give a short overview of discrete models of perception and to illustrate the need to make explicit what aspects of discrete theories are addressed by what aspects of brain wave findings. [ABSTRACT FROM AUTHOR]

The study of the temporal judo combat structure of athletes with visual impairment (VI) needs further research. The objectives of the study were to determine the temporal structure of combat of judo in men and women with VI and establish differences between sexes, within their respective weight categories and between the different minutes of combat. The sample was formed by all the judokas with VI who participated in the 2018 IBSA Judo World Championship (172 men and 95 women). Through observational methodology, we analysed all the combats (n = 365). In order to obtain the results, we used different analytical techniques: descriptive, one-way ANOVA, t-test to show independents, chi-square, effect size and T-Patterns analysis. The level of significance was ρ ≤.05. The results define a temporal structure by sex and by weight category that allows the judo professionals to plan precise and adequate trainings for the athletes. We conclude that there are differences in the temporal structure of judo combat within the men and women with VI, within their respective weight categories and within the different minutes of combat. The temporal structure of combat has changed more markedly in women and unevenly in the different weight categories for both sexes. [ABSTRACT FROM AUTHOR]

In the Cartesian tradition of discussing the structure of the micro-judgement “I think” Kant‘s treatment deserves extraordinary attention. Under the idiomatic heading of self-affection he delivers a micro-analysis of this judgment, contributing in a unique way to the clarification of a singular case of self-knowledge: In this case the thinking subject 1. thematises the act of judging “I think” by conferring on this act the specific logical, categorical form, 2. intuits this act under the temporal form of successively using “I ...” as subject and “… think” as predicate, 3. identifies him-/herself — at the same time — with the subject logically structuring this act as well as with the subject intuiting the successively existing subject of this judging act, and 4. recognises him-/herself as identical in these two different cognitive roles. By this very analysis Kant shows that the eminent micro-judgement-act “I think” has the complex, though paradigmatic substructure of each human subject recog­nising his/her identity as thinking / judging and temporally existing while thinking / judging.

Planetary bow shocks are a natural laboratory for investigating the physics of collisionless shocks. Given that spacecraft observations provide us with information regarding the temporal structure of the shock, often multi‐spacecraft missions and kinetic simulations are needed to discern the nature of the dissipation processes at the shock and the resulting spatial structure. Such an approach through the ISEE mission and 1.5‐D hybrid (kinetic ions and fluid electrons) simulations led to an understanding of supercritical quasi‐perpendicular shocks. In such shocks, the reflection of a fraction of incident ions and their gyration back into the shock is part of the dissipation process resulting in the formation of a foot, ramp, overshoot, and undershoot. More recently, observations of high Mach number quasi‐perpendicular shocks show a seemingly turbulent structure in time series data. In this study, we use the results of 2.5‐D global hybrid simulation of a high Mach number quasi‐perpendicular shock to demonstrate the major differences between the spatial and temporal structure of such shocks. The spatial structure of the shock is the same as that of supercritical shocks while the temporal structure consists of fast magnetosonic pulses. The reason for this difference is attributed to the generation of surface waves at the shock which results in partial encounters between the shock and spacecraft. The surface waves are shown to be generated by large velocity shears present at the shock due to ion reflection and gyration into the upstream. Key Points: Hybrid simulation of a high Mach number quasi‐perpendicular shock shows a spatial structure consisting of a foot, ramp, and overshootUsing a simulated spacecraft, we show the same shock to have a seemingly turbulent temporal structureMajor differences between spatial and temporal structure of the shock are observed due to the presence of surface waves [ABSTRACT FROM AUTHOR]

Copyright of Journal of Sport & Health Research is the property of Journal of Sport & Health Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study investigated the effect of area size (434, 636, and 838m) and effort-pause ratio (free combat, 2:1 and 3:1) on the physiological and perceptive responses during female judo combats. Twelve female judo athletes (mean6SD: age: 17.160.4 years; height: 16067 cm; body mass: 59.8611.5 kg; body fat: 25.765.5%; and judo experience: 8.460.5 years) volunteered to perform nine 4-minute randoris randomly determined. Blood lactate [La] before and after combats, heart rate before combat (HRpre), mean HR (HRmean), peak HR (HRpeak), and rating of perceived exertion (RPE) immediately after the combats were assessed for each condition. Results showed that [La] pre and HR values did not differ according to time structure and area sizes (p .0.05). However, [La] post was higher on free randori compared with 3:1 ratio (p50.006) and in the 434-m area compared with 6 36-m (p,0.001) and 838-m (p50.036) areas. Moreover, RPE was higher in the 434mcompared with 838 m (p50.038). In conclusion, combining time structure and area sizes may alter physiological and perceptual responses during female judo randori. Moreover, combat-based exercises may be effective in preparing athletes to cope with physiological and technical demands of the combat by stressing properly the energy systems solicited during official competitions. [ABSTRACT FROM AUTHOR]

The aim of the paper is to investigate aspectual value of secondary aspectual verb phrase in Serbian in terms of both grammatical and lexical aspect (Aktionsart). The present analysis focuses on two secondary aspectualizers krenuti and stati, which when used as lexical verbs have the opposite meanings related to motion in space, but when they appear as phase construction heads both verbs modify the opening segment of the aspectual event. The central idea of the proposal is that event types in general largely depend on temporal structures which need to be contextualized before they are formally identifiable. In other words, contrary to traditional approaches which define lexical aspect as inherent to verb meaning, we claim that each verb form (or any lexical and/or grammatical form for that matter) has an underlying meaning through which it entertains systematic relations with other forms in a language (Hirtle 1982:40). We start from aspectual and Aktionsart features of krenuti and stati as verb lexemes, then move onto the level of syntax to identify the cocompositional aspect of the overall phase construction via event structure and event segmentation mechanisms. Finally, the present paper aims to examine different uses of the two secondary aspectual verbs, along with the different types of events they can denote in order to bring to light the potential meanings which give rise to the various contextual senses of the aspectual construction. The reported results of the analysis were checked on the Corpus of Contemporary Serbian Language (SrpKor 2013). [ABSTRACT FROM AUTHOR]

Mode and tempo are known to influence affective experiences during music listening. While mode (major/minor) is associated with emotional valence (positive/negative), tempo (slow/fast) is associated with emotional arousal (calm/excited). Heart rate (HR) and respiration rate (RR) are also thought to adapt (entrain) to the tempo, leading to emotion elicitation via afferent feedback mechanisms. Here, we tested the influence of mode, tempo, and entrainment on affective experiences by recording HR, RR, and self-reported subjective entrainment and affect measures while participants (N = 20) listened to major and minor chords embedded in slow and fast isochronous, metrical, and random sequences. Though there was no effect of tempo on HR or RR, both were faster during major and metrically random chord sequences, respectively. Slower HR positively predicted visceral entrainment (VE) ratings, the extent to which one feels one's internal rhythms changing, and fast tempo positively predicted motor entrainment (ME) ratings, the extent to which one feels like moving. Compared to minor chords, fast major chord sequences induced more feelings of vitality (positive, high arousal), while minor sequences induced more feelings of unease (negative, high, and low arousal). Both ME and VE positively predicted pleasantness ratings and positive emotions, and negatively predicted negative emotions. [ABSTRACT FROM AUTHOR]

Temporal regularity is ubiquitous and essential to guiding attention and coordinating behavior within a dynamic environment. Previous researchers have modeled attention as an internal rhythm that may entrain to first-order regularity from rhythmic events to prioritize information selection at specific time points. Using the attentional blink paradigm, here we show that higher-order regularity based on rhythmic organization of contextual features (pitch, color, or motion) may serve as a temporal frame to recompose the dynamic profile of visual temporal attention. Critically, such attentional reframing effect is well predicted by cortical entrainment to the higher-order contextual structure at the delta band as well as its coupling with the stimulus-driven alpha power. These results suggest that the human brain involuntarily exploits multiscale regularities in rhythmic contexts to recompose dynamic attending in visual perception, and highlight neural entrainment as a central mechanism for optimizing our conscious experience of the world in the time dimension.

Temporal genetic studies of low‐dispersing organisms are rare. Marine invertebrates lacking a planktonic larval stage are expected to have lower dispersal, low gene flow, and a higher potential for local adaptation than organisms with planktonic dispersal. Leptasterias is a genus of brooding sea stars containing several cryptic species complexes. Population genetic methods were used to resolve patterns of fine‐scale population structure in central California Leptasterias species using three loci from nuclear and mitochondrial genomes. Historic samples (collected between 1897 and 1998) were compared to contemporary samples (collected between 2008 and 2014) to delineate changes in species distributions in space and time. Phylogenetic analysis of contemporary samples confirmed the presence of a bay‐localized clade and revealed the presence of an additional bay‐localized and previously undescribed clade of Leptasterias. Analysis of contemporary and historic samples indicates two clades are experiencing a constriction in their southern range limit and suggests a decrease in clade‐specific abundance at sites at which they were once prevalent. Historic sampling revealed a dramatically different distribution of diversity along the California coastline compared to contemporary sampling and illustrates the importance of temporal genetic sampling in phylogeographic studies. These samples were collected prior to significant impacts of Sea Star Wasting Disease (SSWD) and represent an in‐depth analysis of genetic structure over 117 years prior to the SSWD‐associated mass die‐off of Leptasterias. [ABSTRACT FROM AUTHOR]

Tactile stimuli can be distinguished based on their temporal features (e.g., duration, local frequency, and number of pulses), which are fundamental for vibrotactile frequency perception. Characterizing how the hemodynamic response changes in shape across experimental conditions is important for designing and interpreting fMRI studies on tactile information processing. In this study, we focused on periodic tactile stimuli with different temporal structures and explored the hemodynamic response function (HRF) induced by these stimuli. We found that HRFs were stimulus‐dependent in tactile‐related brain areas. Continuous stimuli induced a greater area of activation and a stronger and narrower hemodynamic response than intermittent stimuli with the same duration. The magnitude of the HRF increased with increasing stimulus duration. By normalizing the characteristics into topographic matrix, nonlinearity was obvious. These results suggested that stimulation patterns and duration within a cycle may be key characters for distinguishing different stimuli. We conclude that different temporal structures of tactile stimuli induced different HRFs, which are essential for vibrotactile perception and should be considered in fMRI experimental designs and analyses. [ABSTRACT FROM AUTHOR]

The paper revisits the issue of semantic equivalency of two aspectual verbs, start and krenuti, which is proposed by Milivojević (2021a, 2021b). The present analysis focuses on the causative and dynamic semantic features of start and krenuti, with the aim of a contrastive analysis of the aspectual constructions headed by these two verbs. It is shown that both start and krenuti, provided that the necessary linguistic conditions are met, have the ability to "cancel" the event initiated via constructional phase modification. The conditions for such event-cancelling result from the lexical semantics of start and krenuti, as well as from the semantic co-composition on the level of the aspectual construction as a whole. The theoretical frame of the analysis is the presupposition and consequence account by A. Freed (1979). The contrastive analysis and presented theoretical conclusions are backed by a parallel corpus of 200 English and Serbian sentences compiled from the Corpus of Global Web-Based English (GlowBE 2013) and the Corpus of Contemporary Serbian Language (SrpKor 2013). [ABSTRACT FROM AUTHOR]

The metaphor time is space (Lakoff & Johnson 1999) and the pervasiveness of metaphor and image-schematic structure in human conceptualization (Johnson 1987; Hampe 2005) have been widely accepted among cognitive scientists as constructs that help explain non-spatial and temporal linguistic constructions. However, Conceptual Metaphor Theory (CMT) might not be the whole story. While it is acceptable that moments in time can be construed as being analogous to points in space as in utterances such as at the corner vs. at 2:30, there seems to be much more temporal cognition than previously thought. It turns out that time exhibits its own structure (following Evans 2004, 2013; Galton 2011) that is based on transience. This idea has made some scholars support the weak version of CMT which posits that the temporal meaning of prepositions is represented and processed independently of the corresponding spatial meanings (see Kemmerer 2005 for such a view). The present article supports the idea that spatial and temporal structures complement each other in order to achieve temporal conceptions. This is indeed a conceptual pattern showed by the English preposition at that makes use of an extrinsic temporal reference to activate its temporal semantics. To analyze the different temporal realizations that at may have, the paper aims to identify the topological structure that underlies the conceptual basis of this preposition. This allows us to appreciate how the spatio-conceptual structure of at partially structures temporal conceptions. The paper also identifies the nature of the temporal structure that is involved in temporal realizations. The article concludes with some remarks, among them the pivotal role of the schematic temporal structure that is captured by the extrinsic temporal reference, and the role of conceptual metaphor in underdetermining temporal thinking. [ABSTRACT FROM AUTHOR]

The temporal pattern of flower opening and closure is a feature of the biology of many plant species, particularly those inhabiting oceanic islands where flowering generally lasts for only a few hours per day. Additionally, flower visitors often seek different floral sources on a timely basis, thus the relative timing of interactions is central to their status in pollination competition, or in the facilitation of pollination among co-flowering plants sharing pollinators. However, few studies have examined the impacts of daily temporal variation in flowering patterns on the pollinator network and competition on a community scale. In order to examine whether the daily pattern of flower opening and closure can impose temporal dynamics on interspecific interactions within a single day, plant–pollinator interaction networks (AM subweb and PM subweb) were quantified, and the relevant interactions between the two subwebs were compared using the Bray–Curtis dissimilarity of visitation frequencies in an oceanic island community (Paracel Islands, South China Sea). The role of species within networks and its variation between two subwebs were assessed by calculating the species-level specialization and species strength of each plant and pollinator species. The quantitative plant–pollinator interaction dissimilarity between morning and afternoon subsets was 0.69, and this value dropped to 0.58 when considering plant species flowering throughout the day. In our study, this dissimilarity between the two subwebs might be explained by the morning peak activity rather than a preference for morning flowers. No significant differences were detected in the species-level specialization and species strength of plants flowering all day from morning to afternoon at the community level. The flower visitation rates of native honeybee Apis cerana were not significantly different between morning and afternoon for most of the whole-day flowering plants. However, plant species only flowering either in the morning or the afternoon differed in the rate of visitation by A. cerana. The analyses of variation in the visitation rates of pollinators shared by plants within a single day in the studied community suggest that daily structuring at a community level and half-day staggered flowering during the morning or afternoon might reduce competitive interactions in oceanic insular habitats. [ABSTRACT FROM AUTHOR]

Background Extensive knowledge on the genetic characterization of marine organisms has been assembled, mainly concerning the spatial distribution and structuring of populations. Temporal monitoring assesses not only the stability in genetic composition but also its trajectory over time, providing critical information for the accurate forecast of changes in genetic diversity of marine populations, particularly important for both fisheries and endangered species management. We assessed fluctuations in genetic composition among different sampling periods in the western Portuguese shore in three fish species. Methods White seabream Diplodus sargus, sand smelt Atherina presbyter and shanny Lipophrys pholis were chosen, because of their genetic patterns in distinct ecological environments, insight into historical and contemporary factors influencing population effective size (Ne), and degree of commercial exploitation. Samples were obtained near Lisbon between 2003 and 2014 and screened for genetic variation with mitochondrial and nuclear markers. Analyses included genealogies, genetic diversities, temporal structures and contemporary Ne. Results For mtDNA no temporal structure was detected, while for nDNA significant differences were recorded between some sampling periods for the shanny and the sand smelt. Haplotype networks revealed deep genealogies, with various levels of diversification. The shanny revealed a smaller Ne/generation when compared to the other species, which, in turn, revealed no evidence of genetic drift for most study periods. These results highlight the fact that temporal variations in genetic pool composition should be considered when evaluating the population structure of fish species with long distance dispersal, which are more vulnerable to recruitment fluctuations.

Nonlinear blind source separation (BSS) is one of the unsolved problems in unsupervised learning, because the solutions are highly non-unique when there is no prior information for the mixing functions. In this paper, we present a novel approach to tackle the ill-posedness of the nonlinear BSS problem with a few assumptions. The derivation of our algorithm is inspired by the idea of an efficient layer-by-layer representation to approximate the nonlinearity. Once such a representation is built, a final output layer is constructed by solving a convex optimization problem. Relying on the multi-layer architecture, the algorithm transforms a time-invariant nonlinear BSS to the local linear problem with a tolerable computational cost. Then, the projected data can break the nonlinear problem down into the version of a generalized joint diagonalization problem in the feature space. Importantly, the parameters and forms of polynomials depend solely on the input data, which guarantee the robustness of the structure. We thus address the general problem without being restricted to any specific mixture or parametric model. Experiments show that the proposed algorithm has a higher estimation accuracy on audio data sets from the real world for separating various nonlinear mixtures.

To assess genetic variation in pink salmon (Oncorhynchus gorbuscha), the polymorphism of nucleotide sequences of the ND2 and Cytb (mtDNA) genes has been analyzed in 404 individuals of even- and odd-year broodlines from 10 temporal samples collected in different years from one river. The data that earlier indicated a high level of genetic differences between samples of the broodlines spawning in even- and odd-numbered years have been confirmed. Genetic differences between samples of early- and late-run fish was detected in a number of cases. A high probability of purifying selection of the studied genes in both broodlines of pink salmon was found using neutrality tests and models based on likelihood methods and Bayesian approach. A median network of haplotypes based on combined mtDNA sequences for even- and odd-year broodlines have revealed the star-like genealogies and the incomplete "sorting" of haplotypes between them. The analysis of distribution of pairwise nucleotide substitutions, neutrality tests, and Bayesian skyline data support the model of expansion for the population of both pink salmon broodlines that occurred at almost the same time. A study of the history of haplotype divergence inferred from the Bayesian chronogram show the similarity of demographic histories in the populations of both broodlines as a reflection of paleoclimate changes in the region. [ABSTRACT FROM AUTHOR]

When children testify in cases of child sexual abuse (CSA), they often provide minimal responses to attorneys' questions. Thus, how attorneys ask questions may be particularly influential in shaping jurors' perceptions and memory for case details. This study examined mock jurors' perceptions after reading an excerpt of a CSA trial transcript. Participants' memory of the excerpt was tested after a two-day delay. We examined how reading a direct or cross-examination excerpt that included either high or low temporal structure impacted participants' perceptions, verdict decisions and memory reports. We found that participants who read a direct examination excerpt rated the child witness as more credible, were more likely to convict the defendant and had more accurate memory reports than those who read a cross-examination excerpt, regardless of temporal structure. Suggestions for improving jurors' comprehension and recall of child statements presented as evidence in CSA cases are discussed. [ABSTRACT FROM AUTHOR]

Match simulations have been used to investigate different interventions in judo. However, no study has assessed the reliability of actions performed and the physiological responses to the match and its usefulness. Thus, 2 studies were conducted to verify the reliability of time-motion and physiological responses to judo matches. In the first study, 25 judo athletes performed one 5-minute judo match simulation twice, 1 week apart, and had their heart rate and blood lactate measured. In the second, 12 judo athletes performed one 5-minute judo simulation 4 times, 72 hours apart, and had their primary actions and match temporal structure analyzed. Comparisons between conditions, reliability (using intraclass correlation coefficient, ICC), typical error (TE), smallest worthwhile change (SWC), and minimal detectable change were determined. The main findings indicated that: (a) there were no differences between matches for any variable; (b) ICCs were significant (except for blood lactate before matches in both studies) with 6 variables presenting large (number of attacks plus defensive actions, number of scoring actions, efficiency, number of sutemi-waza, time per combat sequence, and time per interval phase time), and the remaining 15 variables presenting very large reliability; (c) TE was higher than SWC for all variables when small differences were considered. Moderate changes in peak blood lactate and the change in blood lactate (in both studies), and time in tachi-waza could be properly detected; however, only large changes could be detected for all other variables, suggesting that investigations using match simulation as an outcome variable may only detect large changes. [ABSTRACT FROM AUTHOR]

The informative value of time and temporal structure often remains neglected in cognitive assessments. However, next to information about stimulus identity we can exploit temporal ordering principles, such as regularity, periodicity, or grouping to generate predictions about the timing of future events. Such predictions may improve cognitive performance by optimising adaptation to dynamic stimuli. Here, we investigated the influence of temporal structure on verbal working memory by assessing immediate recall performance for aurally presented digit sequences (forward digit span) as a function of standard (1000 ms stimulus‐onset‐asynchronies, SOAs), short (700 ms), long (1300 ms) and mixed (700–1300 ms) stimulus timing during the presentation phase. Participant's digit spans were lower for short and mixed SOA presentation relative to standard SOAs. This confirms an impact of temporal structure on the classic "magical number seven," suggesting that working memory performance can in part be regulated through the systematic application of temporal ordering principles. [ABSTRACT FROM AUTHOR]

Background: Extensive knowledge on the genetic characterization of marine organisms has been assembled, mainly concerning the spatial distribution and structuring of populations. Temporal monitoring assesses not only the stability in genetic composition but also its trajectory over time, providing critical information for the accurate forecast of changes in genetic diversity of marine populations, particularly important for both fisheries and endangered species management. We assessed fluctuations in genetic composition among different sampling periods in the western Portuguese shore in three fish species. Methods: White seabream Diplodus sargus, sand smelt Atherina presbyter and shanny Lipophrys pholis were chosen, because of their genetic patterns in distinct ecological environments, insight into historical and contemporary factors influencing population effective size (Ne), and degree of commercial exploitation. Samples were obtained near Lisbon between 2003 and 2014 and screened for genetic variation with mitochondrial and nuclear markers. Analyses included genealogies, genetic diversities, temporal structures and contemporary Ne. Results: For mtDNA no temporal structure was detected, while for nDNA significant differences were recorded between some sampling periods for the shanny and the sand smelt. Haplotype networks revealed deep genealogies, with various levels of diversification. The shanny revealed a smaller Ne/generation when compared to the other species, which, in turn, revealed no evidence of genetic drift for most study periods. These results highlight the fact that temporal variations in genetic pool composition should be considered when evaluating the population structure of fish species with long distance dispersal, which are more vulnerable to recruitment fluctuations. [ABSTRACT FROM AUTHOR]

The timing of acoustic events is central to human speech and music. Tempo tends to be slower in aesthetic contexts: rates in poetic speech and music are slower than non-poetic, running speech. We tested whether a general aesthetic preference for slower rates can account for this, using birdsong as a stimulus: it structurally resembles human sequences but is unbiased by their production or processing constraints. When listeners selected the birdsong playback tempo that was most pleasing, they showed no bias towards any range of note rates. However, upon hearing a novel stimulus, listeners rapidly formed a robust, implicit memory of its temporal properties, and developed a stimulus-specific preference for the memorized tempo. Interestingly, tempo perception in birdsong stimuli was strongly determined by individual, internal preferences for rates of 1–2 Hz. This suggests that processing complex sound sequences relies on a default time window, while aesthetic appreciation appears flexible, experience-based and not determined by absolute event rates. [ABSTRACT FROM AUTHOR]

Since the late 1990’s correlates of rhythm classes of languages have been profusely used to search for differences between languages, dialects, speaking styles, degree of foreign accents, etc. Over the years the original attractiveness of the metrics has been replaced with suspicion and, occasionally, even fierce criticism. Among many reservations the critics argue that the metrics are only based on durational measures ignoring other dimensions of prominence, and they are considerably influenced by local temporal variation in utterances. We argue that the metrics could still be exploited in speech research as long as we do not expect them to reflect “speech rhythm” and as long as the proper account of their use is supplied. This study provides simulations to demonstrate the behaviour of the most commonly utilised metrics, and presents representative measurements of some Czech and English speech recordings under several conditions.

In recent years, vehicular ad hoc networks (VANETs) have received significant interests from both academia and industry because of the ubiquitous communication capabilities they provide. VANETs are expected to support a wide range of applications that may influence our daily life, ranging from road safety applications to entertainment ones. A key to the development of protocols and algorithms for intervehicle communication and services lies in the knowledge of the structural properties of the VANET communication graph. Nonetheless, previous researches represented the VANET communication graph as a set of snapshots and tracked the evolution of some metrics on snapshots at certain time intervals. They neglected to take into account the temporal property of VANETs, which in many real scenarios plays a pivotal role. In this paper, we mainly explore the temporal structural characteristics of VANETs. A time-extended model is first presented to capture the temporal property of VANETs. Based on the model, some key metrics are defined to describe the structural characteristics of VANETs in various aspects. We then employ a real and large-scale urban taxi GPS dataset to provide a comprehensive study of the temporal structural characteristics involved with time-ordered paths, reachability, and connectivity of VANETs. These results are helpful in designing better protocols and algorithms to achieve reliable and low-latency communications.

Singing humpback whales often produce sound patterns that are predictably timed. Phrase duration, in particular, has been noted as one of the most stable properties of humpback whale songs. Most descriptive analyses of songs focus, however, either on consistency in sequential structure or on gradual changes in song composition, rather than on the timing of sounds and silences within songs. As a result, little is known about how the timing of sound production varies within or across song sessions. Here, we present an approach to analysing temporal structure within song sessions that can be applied to any recording of a nearby, isolated singer, without requiring subjective classification of songs, themes, phrases or units. Our analyses confirm past subjective impressions of high temporal regularity within song sessions, but also show that the timing of sound production can vary greatly. Singing humpback whales alternate between producing sequences with highly stable temporal structure, sequences with progressive shifts in timing and sequences with rapidly varying temporal features. The amount of time a singer spends producing sequences of each type can vary considerably across song sessions. These findings raise important questions about the extent to which singing humpback whales actively control the rhythm and tempo of sound production. [ABSTRACT FROM AUTHOR]

The author argues that behind the apparent randomness of interactions between cabdrivers and their fares in Warsaw is a temporal structure. To capture this temporal structure, the author introduces the notion of a linking ecology. He argues that the Warsaw taxi market is a linking ecology, which is structured by religious time, state time, and family time. The author then focuses on waiting time, arguing that it too structures the interactions between cabdrivers and their fares. The author makes a processual argument that waiting time has been restructured by the postsocialist transformation, but only because this transformation has been continually encoded through the defensive and adaptive strategies of cabdrivers responding to the repetitive and unique events located across the social space. The author concludes with the claim that linking ecologies are a recurring structure of the social process and that they form the backbone of globalization, financialization, and mediatization. [ABSTRACT FROM AUTHOR]