Changes in sedentary behavior patterns during the transition from childhood to adolescence and their association with adiposity: a prospective study based on compositional data analysis

Background To date, no longitudinal study using a compositional approach has examined sedentary behavior (SB) patterns in relation to adiposity in the pediatric population. Therefore, our aims were to (1) investigate the changes in SB patterns and adiposity from childhood to adolescence, (2) analyze the prospective compositional associations between changes in SB patterns and adiposity, and (3) estimate the changes in adiposity associated with substituting SB with physical activity (PA) of different intensities. Methods The study presents a longitudinal design with a 5-year follow-up. A total of 88 participants (61% girls) were included in the analysis. PA and SB were monitored for seven consecutive days using a hip-worn accelerometer. Adiposity markers (fat mass percentage [FM%], fat mass index [FMI], and visceral adiposity tissue [VAT]) were assessed using the multi-frequency bioimpedance analysis. The prospective associations were examined using compositional data analysis. Results Over the follow-up period, the proportion of time spent in total SB increased by 154.8 min/day (p < 0.001). The increase in total SB was caused mainly by an increase in middle and long sedentary bouts, as these SB periods increased by 79.8 min/day and 62.0 min/day (p < 0.001 for both), respectively. FM%, FMI, and VAT increased by 2.4% points, 1.0 kg/m2, and 31.5 cm2 (p < 0.001 for all), respectively. Relative to the remaining movement behaviors, the increase in time spent in middle sedentary bouts was significantly associated with higher FM% (βilr1 = 0.27, 95% confidence interval [CI]: 0.02 to 0.53) at follow-up. Lower VAT by 3.3% (95% CI: 0.8 to 5.7), 3.8% (95% CI: 0.03 to 7.4), 3.9% (95% CI: 0.8 to 6.9), and 3.8% (95% CI: 0.7 to 6.9) was associated with substituting 15 min/week spent in total SB and in short, middle, and long sedentary bouts, respectively, with an equivalent amount of time spent in vigorous PA. Conclusions This study showed unfavorable changes in SB patterns and adiposity status in the transition from childhood to adolescence. Incorporating high-intensity PA at the expense of SB appears to be an appropriate approach to reduce the risk of excess adiposity in the pediatric population.

Polysemy and Apparent Polyfunctionality of the Sakhalin Ainu Prefixes e- and ko-

The present study focuses on the polysemous verbal prefixes e- and ko- of Sakhalin Ainu and proposes their analysis as markers of high transitivity. The author takes a compositional approach to argument structure and event structure in order to account for the main use of e- and ko- as applicative markers as well as for their less common use as markers of resultative-completive and intensive aspect. Ultimately, the analysis shows that the apparent polyfunctionality of e- and ko- arises from two separate applications at the syntax-semantics level of one same underlying function of the prefixes. The author also comments on how the Sakhalin Ainu case fits in with other cases of valence-aspect conceptual overlapping cross-linguistically and on the implications of his findings for Ainu studies specifically.

Pierre Boulez, Latin America, and the European Avant-Garde After 1950

Recognized as a critic, composer, teacher, conductor and impresario, Pierre Boulez left a huge footprint that defined the trajectory of European concert music during the second half of the twentieth century. With the composition of Le Marteau sans maître (1953–1955) and several subsequent works from the mid-1950s and early 1960s, he established himself as one of the most important composers in his artistic circle. His compositional approach changed radically during the course of this time period. Although many of his pitch organization techniques were only unraveled several decades later, innovations with respect to other parameters of the musical language had a clear and immediate impact. Keeping this in mind, with this intentionally provocative title, I would like to discuss how Latin America played a decisive role in the career of this enormous figure of twentieth-century music. After presenting a brief summary of his professional trajectory, I will discuss the three tours he made of Latin America at the beginning of the 1950s, which, considered within the frame of his interest in ethnomusicology, were crucial to his career. They gave him the space and inspiration for crucial innovations in his development as a composer. By reference to Boulez’s writings, and based on a critical reading of the works that reflect the influence of Latin American music, I will discuss how some of the most important changes in his musical language, like his emphasis on elements of contrast and resonance, were inspired by his experiences on this tour, as much, or more, than by more recognized influences, like Japanese and African music. This has some considerable implications, given that Boulez’s new musical language had tremendous impact on the development of the European avant-garde in the second half of the twentieth century. Haciendo referencia a los escritos del compositor y tomando como base una lectura crítica de las obras que reflejan la influencia que recibió de la música latinoamericana, discutiré cómo algunos de los cambios más importantes en su lenguaje musical fueron inspirados por las experiencias de Boulez en sus giras en esta región, tanto o más que por influencias más reconocidas, como la música japonesa y la música africana. Esto tiene implicaciones importantes, dado a que el nuevo lenguaje musical de Boulez tuvo un impacto considerable en el desarrollo de la vanguardia europea después de la segunda guerra mundial.

Flow Assurance and Thermodynamic Challenges of operating CO2 Pipelines for variations in terrains and environments

The requirement for capturing and storing Carbon Dioxide will continue to grow in the next decade and a fundamental part of this is being able to transport the fluid over large geographical distances in numerous terrains and environments. The evolving nature of the fluid supply and the storage characteristics ensure the operation of the pipeline remains a challenge throughout its operational life. This paper will examine the impact of changes in the fluid composition, storage locations, ambient conditions and the various operating modes the pipeline will see throughout the lifecycle, highlight the technical design and operational challenges and finally give guidance on future developments. The thermodynamic behaviour of CO2 with and without impurities will be demonstrated utilising the fluid characterisation software, MultiflashTM. The fluid behaviour and hydraulic performance will be calculated over the expected operational envelope of the pipeline throughout field life, highlighting the benefits and constraints of using the single component module in OLGATM whilst comparing against a compositional approach when dealing with impurities. The paper will demonstrate through two case studies of varying nature including geographical environment, storage location (aquifer vs. abandoned hydrocarbon reservoir) and ambient conditions, the following issues: The impact of the storage type on the pipeline operations and how this will evolve with time; The environmental conditions and the impact these have on selection of process equipment and operational procedures (i.e. shutdown); and The impact the CO2 composition has on the design of the CO2 pipeline, and The paper will conclude with a set of guidelines for undertaking design analysis of CO2 pipelines for variations in fluid composition, storage locations and ambient conditions as well as some key operational strategies. This paper utilises the current state of the art tools and how these evolving tools are making this technically challenging area more mainstream.

A Case History for an Integrated Asset Model with Fluid Delumping for a Complex Gas Condensate Field

Field development planning of gas condensate fields using numerical simulation has many aspects to consider that may lead to a significant impact on production optimization. An important aspect is to account for the effects of network constraints and process plant operating conditions through an integrated asset model. This model should honor proper representation of the fluid within the reservoir, through the wells and up to the network and facility. Obaiyed is one of the biggest onshore gas field in Egypt, it is a highly heterogeneous gas condensate field located in the western desert of Egypt with more than 100 wells. Three initial condensate gas ratios are existing based on early PVT samples and production testing. The initial CGR values are as following;160, 115 and 42 STB/MMSCF. With continuous pressure depletion, the produced hydrocarbon composition stream changes, causing a deviation between the design parameters and the operating parameters of the equipment within the process plant, resulting in a decrease in the recovery of liquid condensate. Therefore, the facility engineers demand a dynamic update of a detailed composition stream to optimize the system and achieve greater economic value. The best way to obtain this compositional stream is by using a fully compositional integrated asset model. Utilizing a fully compositional model in Obaiyed is challenging, computationally expensive, and impractical, especially during the history match of the reservoir numerical model. In this paper, a case study for Obaiyed field is presented in which we used an alternative integrated asset modeling approach comprising a modified black-oil (MBO) that results in significant timesaving in the full-field reservoir simulation model. We then used a proper de-lumping scheme to convert the modified black oil tables into as many components as required by the surface network and process plant facility. The results of proposed approach are compared with a fully compositional approach for validity check. The results clearly identified the system bottlenecks. The model enables the facility engineers to keep the conditions of the surface facility within the optimized operating envelope throughout the field's lifetime and will be used to propose new locations and optimize the tie-in location of future wells in addition to providing flow assurance indications throughout the field's life and under different network configurations.

Duncan Winder: architectural photographer

<p>In 1960s New Zealand, Duncan Winder (1919-1970) transitioned from architect to architectural photographer. With his architectural eye, Winder produced distinctive and seminal images of New Zealand post-war architecture and these images have an enduring relevance today. Despite this significant contribution to local architectural culture, contemporary knowledge of Winder’s legacy and output has remained limited. This research sought to raise awareness of his life and work. To contextualise Winder’s work, a framework for image analysis was developed which drew on the visual languages of two architectural movements which were prominent during Winder’s period of practice, Townscape and New Brutalism. In addition, a visual survey of New Zealand architectural photography from 1930 to 1970 was undertaken. This enabled contextualisation of Winder’s photography with the work of other local photographers operating at the time. From the analysis, it is clear that Winder’s photography shows aspects of both Townscape and New Brutalism, in terms of its compositional approach. This is not only interesting for the fact that these movements have historically been seen as oppositional, but because it exposes some of the ways in which their visual languages were related. The analysis also highlighted the 1960s as a particularly healthy decade for the production of New Zealand architectural photography. This was demonstrated through the progressive improvement in the quality of published architectural photography and the increase in number of architectural photographers practicing locally. It is positive that in recent years Winder’s archive of photographs has been digitised and made publicly accessible, and that digitisation has enabled this research to provide original and thorough commentary on Winder’s photography. The research has identified distinctive and memorable qualities of Winder’s style, including his compositional use of thirds, his off-centre perspectives, and his attentiveness to tone and materiality. In this way, the research has provided appropriate ways to understand and value Winder’s photography, and appreciate his significant contribution to New Zealand’s architectural culture and history.</p>

Duncan Winder: architectural photographer

<p>In 1960s New Zealand, Duncan Winder (1919-1970) transitioned from architect to architectural photographer. With his architectural eye, Winder produced distinctive and seminal images of New Zealand post-war architecture and these images have an enduring relevance today. Despite this significant contribution to local architectural culture, contemporary knowledge of Winder’s legacy and output has remained limited. This research sought to raise awareness of his life and work. To contextualise Winder’s work, a framework for image analysis was developed which drew on the visual languages of two architectural movements which were prominent during Winder’s period of practice, Townscape and New Brutalism. In addition, a visual survey of New Zealand architectural photography from 1930 to 1970 was undertaken. This enabled contextualisation of Winder’s photography with the work of other local photographers operating at the time. From the analysis, it is clear that Winder’s photography shows aspects of both Townscape and New Brutalism, in terms of its compositional approach. This is not only interesting for the fact that these movements have historically been seen as oppositional, but because it exposes some of the ways in which their visual languages were related. The analysis also highlighted the 1960s as a particularly healthy decade for the production of New Zealand architectural photography. This was demonstrated through the progressive improvement in the quality of published architectural photography and the increase in number of architectural photographers practicing locally. It is positive that in recent years Winder’s archive of photographs has been digitised and made publicly accessible, and that digitisation has enabled this research to provide original and thorough commentary on Winder’s photography. The research has identified distinctive and memorable qualities of Winder’s style, including his compositional use of thirds, his off-centre perspectives, and his attentiveness to tone and materiality. In this way, the research has provided appropriate ways to understand and value Winder’s photography, and appreciate his significant contribution to New Zealand’s architectural culture and history.</p>

Spectral Aesthetics and ecological listening in the music of Helena Tulve

This chapter analyzes Estonian composer Helena Tulve's unique timbral process in four works: Sula (1999); L'Équinoxe de l'âme for soprano, triple harp or kannel, and string quartet (2008); Arboles lloran por luvia for voices and nyckelharpa (2006); and I am a River for chamber choir (2009). L'Équinoxe de l'âme (The Equinox of the Soul) is based on a text by the Persian mystic and philosopher Shahab al-Din Suhrawardi on the mythical Persian firebird Simurgh. Rather than portraying dissolving as in the orchestral work ice—Sula means to thaw or melt—the timbral transformations of Équinoxe evoke sparks bursting into flame, as well as a philosophical rumination on existence. The remaining vocal works similarly treat their texts with a programmatic flair that blurs the line between the materiality of the sound and its contemplative mood. Tulve's compositional approach can be considered post-spectral in its influences and attention to timbral detail. However, she is also motivated by ecological concerns, and counts herself among a small group of contemporary Estonian composers devoted to expressing this philosophy through music. Her influences meld in a music that prioritizes “slowness”: a sustained focus on spectral detail that reflects the composer's deep-rooted ecological concerns. The chapter thus draws on ideas from ecological theory, timbral analysis, and speculative aesthetics to show how Tulve's compositions express form through timbre and its expression in space, and reflect an ecological aesthetic of listening.

Discontinuity: A compositional approach to the dynamic decoupling of gesture and sound in live performance

<p>The gestural-sonorous object, as described by Rolf Inge Godøy, has experienced a gradual aesthetic splitting in New Music practices. The notion that physical gesture relates to sounding result in a linear, cause-and-effect fashion can no longer be taken as a pre-condition in the study of compositional thought, as New Complexity conceives of ever more diverse modes of instrumentally focussed sound production, while the New Discipline eschews musical tropes altogether. This thesis formulates a new model of information flow in performance, to facilitate an understanding of the role physical gesture plays in the interpretative processes involved in the creation of bodily and cultural meaning, as derived from musical experiences. This model, based on the concept of the ‘assemblage’, allows for an in-depth consideration of the abstract topologies of external references in music, and provides a foundation for a taxonomy of the modes of disruption of gestural-sonorous linearity. This is developed in the pursuit of a more dynamic and meaningful conception of the role physical gesture plays in the acquisition of knowledge and meaning in music.</p>