129 research outputs found
Predicting Head Pose in Dyadic Conversation
Natural movement plays a significant role in realistic speech animation. Numerous studies have demonstrated the contribution visual cues make to the degree we, as human observers, find an animation acceptable. Rigid head motion is one visual mode that universally co-occurs with speech, and so it is a reasonable strategy to seek features from the speech mode to predict the head pose. Several previous authors have shown that prediction is possible, but experiments are typically confined to rigidly produced dialogue. Expressive, emotive and prosodic speech exhibit motion patterns that are far more difficult to predict with considerable variation in expected head pose. People involved in dyadic conversation adapt speech and head motion in response to the othersâ speech and head motion. Using Deep Bi-Directional Long Short Term Memory (BLSTM) neural networks, we demonstrate that it is possible to predict not just the head motion of the speaker, but also the head motion of the listener from the speech signal
INSPIRE: INvestigating Stellar Population In RElics -- V. Final Data Release: the first catalogue of relics outside the local Universe
This paper presents the final sample and data release of the INvestigating
Stellar Population In RElics (INSPIRE) project, comprising 52 ultra-compact
massive galaxies (UCMGs) observed with the ESO-VLT X-Shooter spectrograph. We
measure integrated stellar velocity dispersion, [Mg/Fe] abundances, ages, and
metallicities for all the INSPIRE objects. We thus infer star formation
histories and confirm the existence of a degree of relicness (DoR), defined in
terms of the fraction of stellar mass formed by , the cosmic time at which
a galaxy has assembled 75% of its mass and the final assembly time. Objects
with a high DoR assembled their stellar mass at early epochs, while low-DoR
objects show a non-negligible fraction of later-formed populations and hence a
spread in ages and metallicities. A higher DoR correlates with larger [Mg/Fe],
super-solar metallicity, and larger velocity dispersion values. The 52 UMCGs
span a large range of DoR from 0.83 to 0.06, with 38 of them having formed more
than 75% of their mass by , which translates in a lower limit to the
number density of relics at of .. Nine relics are extreme (DoR), since they formed
almost the totality () of their stellar mass by redshift . With
INSPIRE, we have increased the number of fully confirmed relics by more than a
factor of 10, also pushing the redshift boundaries, hence building the first
sizeable sample of relics outside the local Universe, opening up an important
window to explain the mass assembly of massive galaxies in the high-z Universe.Comment: submitted to MNRAS, 20 pages, 16 figures, 3 table
Socio-economic drivers of specialist anglers targeting the non-native European catfish (Silurus glanis) in the UK.
Information about the socioeconomic drivers of Silurus glanis anglers in the UK were collected using questionnaires from a cross section of mixed cyprinid fisheries to elucidate human dimensions in angling and non-native fisheries management. Respondents were predominantly male (95%), 30-40 years of age with ÂŁ500 per annum. The proportion of time spent angling for S. glanis was significantly related to angler motivations; fish size, challenge in catch, tranquil natural surroundings, escape from daily stress and to be alone were considered important drivers of increased time spent angling. Overall, poor awareness of: the risks and adverse ecological impacts associated with introduced S. glanis, non-native fisheries legislation, problems in use of unlimited ground bait and high fish stocking rates in angling lakes were evident, possibly related to inadequate training and information provided by angling organisations to anglers, as many stated that they were insufficiently informed
Predictive Process Monitoring Methods: Which One Suits Me Best?
Predictive process monitoring has recently gained traction in academia and is
maturing also in companies. However, with the growing body of research, it
might be daunting for companies to navigate in this domain in order to find,
provided certain data, what can be predicted and what methods to use. The main
objective of this paper is developing a value-driven framework for classifying
existing work on predictive process monitoring. This objective is achieved by
systematically identifying, categorizing, and analyzing existing approaches for
predictive process monitoring. The review is then used to develop a
value-driven framework that can support organizations to navigate in the
predictive process monitoring field and help them to find value and exploit the
opportunities enabled by these analysis techniques
ATLAS FTK : Fast Track Trigger
A track reconstruction system for the trigger of the ATLAS detector at the Large Hadron Collider is described. The Fast Tracker is a highly parallel hardware system designed to operate at the Level-1 trigger output rate. It will provide high-quality tracks reconstructed over the entire inner detector by the start of processing in the Level-2 trigger. The system is based on associative memories for pattern recognition and fast FPGA's for track reconstruction. Its design and expected performance under instantaneous luminosities up to 3 x 10^34 / cm^2 / s are discussed
Twenty-three unsolved problems in hydrology (UPH) â a community perspective
This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through on-line media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focussed on process-based understanding of hydrological variability and causality at all space and time scales.
Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come
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