120 research outputs found
From classlessness to clubculture: A genealogy of post-war British youth cultural analysis
This article surveys the field of British youth cultural analysis since the development in the 1950s of a so-called specific identity and distinctive set of experiences for young people. It outlines the main trajectories of sociological research, from the early positing of a classless youth culture, via various investigations into delinquent solutions, through to the establishment within a cultural studies discipline of a ânew wave of subcultural theoryâin the 1970s. It also examines the challenges to this orthodoxy in an era of ânew timesâ and the recent return to sociology and ethnographic fieldwork. In so doing the article traces the main theoretical traditions from the initial influence of American subcultural theory, through symbolic interactionism and the reinvention of the problem-solving approach in the language of Marxism, to how the field has recently been reconstituted upon the terrain of âpost-subcultural studiesâ. It concludes by critiquing some current calls for the replacement of the subculture concept and argues that, while reports of the death of subculture are greatly exaggerated, the continued use of this concept in future research is perhaps likely to emphasise certain CCCS connotations of group coherence, consistency and commitment in addition to the postmodern traits of flux, fluidity and hybridization that are seemingly constitutive of certain youth cultural forms and activities in the new millenniu
Human-machine scientific discovery
International audienceHumanity is facing existential, societal challenges related to food security, ecosystem conservation, antimicrobial resistance, etc, and Artificial Intelligence (AI) is already playing an important role in tackling these new challenges. Most current AI approaches are limited when it comes to âknowledge transferâ with humans, i.e. it is difficult to incorporate existing human knowledge and also the output knowledge is not human comprehensible. In this chapter we demonstrate how a combination of comprehensible machine learning, text-mining and domain knowledge could enhance human-machine collaboration for the purpose of automated scientific discovery where humans and computers jointly develop and evaluate scientific theories. As a case study, we describe a combination of logic-based machine learning (which included human-encoded ecological background knowledge) and text-mining from scientific publications (to verify machine-learned hypotheses) for the purpose of automated discovery of ecological interaction networks (food-webs) to detect change in agricultural ecosystems using the Farm Scale Evaluations (FSEs) of genetically modified herbicide-tolerant (GMHT) crops dataset. The results included novel food-web hypotheses, some confirmed by subsequent experimental studies (e.g. DNA analysis) and published in scientific journals. These machine-leaned food-webs were also used as the basis of a recent study revealing resilience of agro-ecosystems to changes in farming management using GMHT crops
The association between gambling and financial, social and health outcomes in big financial data
Gambling is an ordinary pastime for some people, but is associated with addiction and harmful outcomes for others. Evidence of these harms is limited to small sample, crosssectional self-reports, such as prevalence surveys. We examine the association between gambling as a proportion of monthly income and 31 financial, social, and health outcomes using anonymous data provided by a UK retail bank, aggregated for up to 6.5 million individuals over up to seven years. Gambling is associated with higher financial distress and lower financial inclusion and planning, and negative lifestyle, health, well-being, and leisure outcomes. Gambling is associated with higher rates of future unemployment, physical disability, and, at the highest levels, substantially increased mortality. Gambling is persistent over time, growing over the sample period, and has higher negative associations among the heaviest gamblers. Our findings inform the debate over the relationship between gambling and life experiences across the population
Next-Generation Global Biomonitoring: Large-scale, Automated Reconstruction of Ecological Networks
We foresee a new global-scale, ecological approach to biomonitoring emerging within the next decade that can detect ecosystem change accurately, cheaply, and generically. Next-generation sequencing of DNA sampled from the Earth's environments would provide data for the relative abundance of operational taxonomic units or ecological functions. Machine-learning methods would then be used to reconstruct the ecological networks of interactions implicit in the raw NGS data. Ultimately, we envision the development of autonomous samplers that would sample nucleic acids and upload NGS sequence data to the cloud for network reconstruction. Large numbers of these samplers, in a global array, would allow sensitive automated biomonitoring of the Earth's major ecosystems at high spatial and temporal resolution, revolutionising our understanding of ecosystem change
Automated Discovery of Food Webs from Ecological Data Using Logic-Based Machine Learning
Networks of trophic links (food webs) are used to describe and understand mechanistic routes for translocation of energy (biomass) between species. However, a relatively low proportion of ecosystems have been studied using food web approaches due to difficulties in making observations on large numbers of species. In this paper we demonstrate that Machine Learning of food webs, using a logic-based approach called A/ILP, can generate plausible and testable food webs from field sample data. Our example data come from a national-scale Vortis suction sampling of invertebrates from arable fields in Great Britain. We found that 45 invertebrate species or taxa, representing approximately 25% of the sample and about 74% of the invertebrate individuals included in the learning, were hypothesized to be linked. As might be expected, detritivore Collembola were consistently the most important prey. Generalist and omnivorous carabid beetles were hypothesized to be the dominant predators of the system. We were, however, surprised by the importance of carabid larvae suggested by the machine learning as predators of a wide variety of prey. High probability links were hypothesized for widespread, potentially destabilizing, intra-guild predation; predictions that could be experimentally tested. Many of the high probability links in the model have already been observed or suggested for this system, supporting our contention that A/ILP learning can produce plausible food webs from sample data, independent of our preconceptions about âwho eats whom.â Well-characterised links in the literature correspond with links ascribed with high probability through A/ILP. We believe that this very general Machine Learning approach has great power and could be used to extend and test our current theories of agricultural ecosystem dynamics and function. In particular, we believe it could be used to support the development of a wider theory of ecosystem responses to environmental change
3D Buried Utility Location Using A Marching-Cross-Section Algorithm for Multi-sensor Data Fusion
We address the problem of accurately locating buried utility segments by fusing data from multiple sensors using a novel marching-cross-section (MCS) algorithm. Five types of sensors are used in this work: Ground Penetrating Radar (GPR), Passive Magnetic Fields (PMF), Magnetic Gradiometer (MG), Low Frequency Electromagnetic Fields (LFEM), and Vibro-acoustics (VA). As part of the MCS algorithm, a novel formulation of the extended Kalman filter (EKF) is proposed for marching existing utility tracks from a scan cross section (scs) to the next one; novel rules for initializing utilities based on hypothesized detections on the first scs and for associating predicted utility tracks with hypothesized detections in the following scss are introduced. Algorithms are proposed for generating virtual scan lines based on given hypothesized detections when different sensors do not share common scan lines, or when only the coordinates of the hypothesized detections are provided without any information of the actual survey scan lines. The performance of the proposed system is evaluated with both synthetic data and real data. The experimental results in this work demonstrate that the proposed MCS algorithm can locate multiple buried utility segments simultaneously, including both straight and curved utilities and can separate intersecting segments. By using the probabilities of a hypothesized detection being a pipe or a cable together with its 3D coordinates, the MCS algorithm is able to discriminate a pipe and a cable close to each other. The MCS algorithm can be used for both post and on-site processing. When it is used on site, the detected tracks on the current scs can help to determine the location and direction of the next scan line. The proposed âmulti-utility multi-sensorâ system has no limit to the number of buried utilities or the number of sensors, and the more sensor data used the more buried utility segments can be detected with more accurate location and orientation
Automating Genomic Data Mining via a Sequence-based Matrix Format and Associative Rule Set
There is an enormous amount of information encoded in each genome â enough to create living, responsive and adaptive organisms. Raw sequence data alone is not enough to understand function, mechanisms or interactions. Changes in a single base pair can lead to disease, such as sickle-cell anemia, while some large megabase deletions have no apparent phenotypic effect. Genomic features are varied in their data types and annotation of these features is spread across multiple databases. Herein, we develop a method to automate exploration of genomes by iteratively exploring sequence data for correlations and building upon them. First, to integrate and compare different annotation sources, a sequence matrix (SM) is developed to contain position-dependant information. Second, a classification tree is developed for matrix row types, specifying how each data type is to be treated with respect to other data types for analysis purposes. Third, correlative analyses are developed to analyze features of each matrix row in terms of the other rows, guided by the classification tree as to which analyses are appropriate. A prototype was developed and successful in detecting coinciding genomic features among genes, exons, repetitive elements and CpG islands
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