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An Interactive Tool for Exploring Score-Aligned Performances: Opportunities for Enhanced Music Engagement
No full textMusic scholars and enthusiasts have long been engaged with both performance recordings and musical scores, but inconveniently, these two closely connected mediums are usually stored separately. Currently, digital music libraries tend to have fairly traditional user interfaces for browsing music recordings, and more importantly, performance recordings are organized separately from their musical scores. In recent years, however, the same technological advances that have made vast troves of sound recordings and musical scores more widely available have also created tremendous potential for innovative new interfaces that can facilitate enhanced engagement with the music. In this paper, we present a web-based prototype tool that allows users to navigate classical piano recordings interactively in conjunction with their scores. We describe the technologies involved, and provide access to the actual website. Our pilot testing results are very positive, confirming the usefulness and potential of such a tool, especially in the areas of music education and scholarly research. We also discuss future development of this prototype
Predicting Symptom Improvement During Depression Treatment Using Sleep Sensory Data
No full textDepression is a serious mental illness. The current best guideline in depression treatment is closely monitoring patients and adjusting treatment as needed. Close monitoring of patients through physician-administered follow-ups or self-administered questionnaires, however, is difficult in clinical settings due to high cost, lack of trained professionals, and burden to the patients. Sensory data collected from mobile devices has been shown to provide a promising direction for long-term monitoring of depression symptoms. Most existing studies in this direction, however, focus on depression detection; the few studies that are on predicting changes in depression are not in clinical settings. In this paper, we investigate using one type of sensory data, sleep data, collected from wearables to predict improvement of depression symptoms over time after a patient initiates a new pharmacological treatment. We apply sleep trend filtering to noisy sleep sensory data to extract high-level sleep characteristics and develop a family of machine learning models that use simple sleep features (mean and variation of sleep duration) to predict symptom improvement. Our results show that using such simple sleep features can already lead to validation F1 score up to 0.68, indicating that using sensory data for predicting depression improvement during treatment is a promising direction
Maypop flowers and pollination: A photographic essay.
No full textMaypops, Passiflora incarnata, are common vine-like plants of Virginia’s Piedmont and Coastal Plain regions. Its flowers are relatively large and, arguably, one of the most complexly structured flowers in our flora. Maypops thrive in my yard, where I let some vines grow among my flowers and vegetables, and where I can observe them frequently at various times during the day. Presented here is a photo essay that explores the morphology of these truly remarkable flowers, culminating in a description of how their intricate structure promotes pollination by carpenter bees
State Consent and the Legitimacy of International Law
Get PDFLike all law, international law is a practice of reason-giving, one in which agents invoke legal norms to justify their conduct. Practitioners of inter- national law generally proceed on the assumption that those norms do, in fact, justify the conduct they sanction. Theorists, in contrast, tend to take a more critical stance towards the practice of international law, including the assumption that the law succeeds in providing a justification for its subjects’ conduct. Why treat the claim that international law prohibits Φ-ing as in itself a reason not to Φ? Or using the terminology I will employ in this chapter, what makes an international legal norm prohibiting Φ-ing legitimate? In the modern era, the consent of States to be bound by international law has played an increasingly prominent role in addressing these questions, with some theorists going so far as to maintain that only State consent can explain why international law binds; that is, why it provides States (and their subjects) with reasons for action. Though not uncontested, the belief in the centrality of State consent to international law’s legitimacy remains widespread today
First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions
No full textWe report results of Λ hyperon production in semi-inclusive deep-inelastic scattering off deuterium, carbon, iron, and lead targets obtained with the CLAS detector and the Continuous Electron Beam Accelerator Facility 5.014 GeV electron beam. These results represent the first measurements of the Λ multiplicity ratio and transverse momentum broadening as a function of the energy fraction (z) in the current and target fragmentation regions. The multiplicity ratio exhibits a strong suppression at high z and an enhancement at low z. The measured transverse momentum broadening is an order of magnitude greater than that seen for light mesons. This indicates that the propagating entity interacts very strongly with the nuclear medium, which suggests that propagation of diquark configurations in the nuclear medium takes place at least part of the time, even at high z. The trends of these results are qualitatively described by the Giessen Boltzmann-Uehling-Uhlenbeck transport model, particularly for the multiplicity ratios. These observations will potentially open a new era of studies of the structure of the nucleon as well as of strange baryons
Observation of large missing-momentum (,′) cross-section scaling and the onset of correlated-pair dominance in nuclei
No full textWe report the measurement of xB scaling in (e, e′ p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350 pmiss 600 MeV/c. The observed scaling extends over a kinematic range of 0.7 xB 1.8, which is significantly wider than 1.4 xB 1.8 previously observed for inclusive (e, e′ ) cross-section ratios. The xB -integrated cross-section ratios become constant (i.e., scale) beginning at pmiss ≈ kF , the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (\u3e375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean- field calculations show good agreement with the data for pmiss \u3c kF , and suggest a potential non-negligible contribution to the measured cross-section ratios from scattering off single, uncorrelated, nucleons up to pmiss ≈ 350 MeV/c. Therefore, SRCs become dominant in nuclei at pmiss ≈ 350 MeV/c, well above the nuclear Fermi SurfaceofkF ≈250MeV/c
Modification of thermally activated delayed fluorescence emitters comprising acridan– pyrimidine moieties for efficient sky-blue to greenish-blue OLEDs
Get PDFThermally activated delayed fluorescence (TADF) is a promising approach to harvest triplet excitons and achieve high-performance organic light-emitting diodes (OLEDs) for displays. In this study, we synthesized two new TADF emitters, 4Ac25CzPy and 4Ac35CzPy, featuring acridan–pyrimidine–carbazole moieties. Remarkably, a slight modification in the carbazole group position enables precise control of luminous color, resulting in emissions at 483 nm and 494 nm for 4Ac25CzPy and 4Ac35CzPy, respectively, in the electroluminescent device. Both compounds exhibit small energy difference between their singlet and triplet states (DEST) of 0.14 eV and 0.15 eV, confirming their TADF characteristics. Notably, OLEDs utilizing 4Ac35CzPy achieve outstanding performance with the maximum external quantum efficiency (ZEQE) of 21.2% and a photoluminescence quantum yield of 65.1%. This high efficiency is attributed to efficient energy transfer from the host to the emitter. Moreover, the 4Ac35CzPy device exhibits a high light outcoupling efficiency of 0.3, further enhancing its remarkable performance