The Skipping Behavior of Users of Music Streaming Services and its Relation to Musical Structure

The behavior of users of music streaming services is investigated from the point of view of the temporal dimension of individual songs; specifically, the main object of the analysis is the point in time within a song at which users stop listening and start streaming another song ("skip"). The main contribution of this study is the ascertainment of a correlation between the distribution in time of skipping events and the musical structure of songs. It is also shown that such distribution is not only specific to the individual songs, but also independent of the cohort of users and, under stationary conditions, date of observation. Finally, user behavioral data is used to train a predictor of the musical structure of a song solely from its acoustic content; it is shown that the use of such data, available in large quantities to music streaming services, yields significant improvements in accuracy over the customary fashion of training this class of algorithms, in which only smaller amounts of hand-labeled data are available

Radiation effects on CMOS image sensors with sub-2µm pinned photodiodes

A group of four commercial sensors with pixel pitches below 2μm has been irradiated with 60Co source at several total ionizing dose levels related to space applications. A phenomenological approach is proposed through behavior analysis of multiple sensors embedding different technological choices (pitch, isolation or buried oxide). A complete characterization including dark current, activation energy and temporal noise analysis allows to discuss about a degradation scheme

A molecular superfluid: non-classical rotations in doped para-hydrogen clusters

Clusters of para-hydrogen (pH2) have been predicted to exhibit superfluid behavior, but direct observation of this phenomenon has been elusive. Combining experiments and theoretical simulations, we have determined the size evolution of the superfluid response of pH2 clusters doped with carbon dioxide (CO2). Reduction of the effective inertia is observed when the dopant is surrounded by the pH2 solvent. This marks the onset of molecular superfluidity in pH2. The fractional occupation of solvation rings around CO2 correlates with enhanced superfluid response for certain cluster sizes

Notes sur l’information culturelle et sur les industries culturelles dans une optique proprement économique

Il s’agit, dans un premier temps, de caractériser et de situer la notion d’industrie culturelle dans le domaine plus vaste du message culturel, lui-même un sous-ensemble du champ encore plus vaste de l’information dans le secteur tertiaire de l’économie. Nous insistons ensuite sur l’opportunité d’une politique des industries culturelles qui puisse s’intégrer dans le cadre d’une politique globale et cohérente pour le Québec, face aux énormes pouvoirs culturels que détiennent les multinationales de la culture. Or, force est de constater que les données officielles de la comptabilité nationale sont peu ou pas du tout adaptées à ce champ d’activité qui, au surplus, subit une profonde mutation, imputable à la révolution technologique en cours, notamment dans le domaine de la micro-informatique.Firstly, the object of this note is to characterize and situate the notion ofcultural industry in the larger domain of cultural messages, itself a part of the stilllarger domain of information flows within the vast tertiary sector of the economy.We then insist on the opportunity of an economic policy directed at thecultural industries, as part of an overall economic policy for Quebec, facing theenormous cultural powers withheld by the multinationals of cultural productionand distribution.However, the official statistics in the national accounts are simply not adaptedto economic analysis of the cultural industries in general. Moreover, this field ofeconomic activity is now undergoing a profound mutation, ascribable to the newtechnology of microelectronics

Rad Tolerant CMOS Image Sensor Based on Hole Collection 4T Pixel Pinned Photodiode

1.4μm pixel pitch CMOS Image sensors based on hole collection pinned photodiode (HPD) have been irradiated with 60Co source. The HPD sensors exhibit much lower dark current degradation than equivalent commercial sensors using an Electron collection Pinned Photodiode (EPD). This hardness improvement is mainly attributed to carrier accumulation near the interfaces induced by the generated positive charges in dielectrics. The pre-eminence of this image sensor based on hole collection pinned photodiode architectures in ionizing environments is demonstrated

Radiation Effects on CMOS Image Sensors With Sub-2 µm Pinned Photodiodes

CMOS image sensor hardness under irradiation is a key parameter for application fields such as space or medical. In this paper, four commercial sensors featuring different technological characteristics (pitch, isolation or buried oxide) have been irradiated with 60Co source. Based on dark current and temporal noise analysis, we develop and propose a phenomenological model to explain pixel performance degradation

Path Integral Ground State with a Fourth-Order Propagator: Application to Condensed Helium

Ground state properties of condensed Helium are calculated using the Path Integral Ground State (PIGS) method. A fourth-order approximation is used as short (imaginary) time propagator. We compare our results with those obtained with other Quantum Monte Carlo techniques and different propagators. For this particular application, we find that the fourth-order propagator performs comparably to the pair product approximation, and is far superior to the primitive approximation. Results obtained for the equation of state of condensed Helium show that PIGS compares favorably to other QMC methods traditionally utilized for this type of calculation

Québec's Childcare Universal Low Fees Policy 10 Years After: Effects, Costs and Benefits

More than ten years ago the province of Québec implemented a universal early childhood education and care policy. This paper examines if the two objectives pursued, to increase mothers’ participation in the labour market (balance the needs of workplace and home) and to enhance child development and equality of opportunity for children, were reasonable meet. A non-experimental evaluation framework based on multiple pre- and post-treatment periods is used to estimate the policy effects. First, year after year the number of children and their weekly of hours in childcare have increased. More preschool children are in non-parental childcare at a younger age and the intensity of childcare has increased over the years. Second, the policy has significantly increased the labour force participation and annual weeks worked for mothers with at least a child aged 1 to 4 years compared to mothers in the same situation in the Rest of Canada. Third, the evidence presented show that the policy has not enhanced school readiness or child early literacy skills in general, with negative significant effects on the PPVT scores of children aged 5 and possibly negative for children of age 4. Simulations show the bounds of the public benefits in terms of additional net taxes (income taxes less refundable credits and transfers based on household’s “net” income). Unless one suppose that mothers in the upper part of the earnings distribution are those who returned early to the labour market after giving birth or a maternity leave, and who have worked more weeks, the effect on governments revenues are modest. The main beneficiary of the larger tax base of a higher labour supply of mothers with young children is the federal government which do not support the significant public funding of the program. The policy has some drawbacks in terms of social efficiency and equity. The structure of the program with its very low $7/day fee before taxes creates strong incentives for families to use long hours of daycare for children at a very young age, which may not be the best mechanism for children development. The high transfers in-kind (1.9 billion in 2009) to families using subsidized childcare raise the question of their horizontal and vertical equity. The paper concludes on three modifications to the program that could correct some of its weaknesses.Childcare policy, mother’s labour supply, preschool children and school readiness, treatment effects, natural experiment

Alien Registration- Roy, Pierre (Lewiston, Androscoggin County)

https://digitalmaine.com/alien_docs/28334/thumbnail.jp