12,147 research outputs found
УНІВЕРСИТЕТСЬКІ ІННОВАЦІЙНІ ХАБИ ЯК ТОЧКИ РОСТУ ІНДУСТРІАЛЬНИХ ПАРКІВ УКРАЇНИ
The purpose of the article is generalization of features of expediency of the creation of innovative parks in Ukraine. Practical output of the results consists in the discovered success factors of the activity of innovative parks in Ukraine in order to create new opportunities of innovation development of the country.
Current organizational and functional system of innovative entrepreneurship of Ukraine is an imperfect, complex and by all indications, is in the process of formation. It is assumed that infrastructure of international educational innovative hub can structurally corrected according to the area which operates a hub that is: stimulate the dialogue between academics, businessmen and government officials; provide an interactive exchange of explicit and implicit knowledge; generate shared vision on adaptation measures of dynamic environment.
Evaluation of the results of scientific and pedagogical activities of working group of innovative hub should be made for following indicators: development of skills of teaching and research work; introducing of innovative approaches for practical individual activity; formation of innovative approaches for collective practical activity; working on the chosen scientific and methodological theme.
Main advantage of proposed university innovative hubs is that laid all necessary foundations in order to high school could be as soon as effectively integrate the results of university, academic and sectoral sciences of Ukraine, well as advanced research results of scientific world community in the development and implementation of innovative projects and development innovationДосліджено індустріальні парки України та дано їх загальну характеристику. Запропоновано авторське бачення змісту програми реалізації інноваційного проєкту «університетський інноваційний хаб». Розкрито можливості інноваційної самоідентифікації університетів України шляхом формування освітніх хабів в інноваційному глобальному просторі та їхні взаємовідносини в межах Рамкової програми ЄС з наукових досліджень й інновацій. У ході дослідження було виявлено, що сучасна організаційно-функціональна система інноваційного підприємництва України є недосконалою, складною і за всіма ознаками перебуває на стадії модернізації. Передбачається, що інфраструктура міжнародного освітнього інноваційного хабу може структурно корегуватися відповідно до галузі, в якій функціонує індустріальний парк, що, у свою чергу, закладатиме базис до колективного створення різного роду інновацій з урахуванням потенціалу технологій, техніки, знань й компетенцій; дозволить інтерактивний обмін явними і неявними знаннями; дасть змогу сформувати спільне бачення щодо заходів адаптації динамічного (гіперзмінного) середовища.
Наведено характерні особливості очікуваних впливів у результаті роботи університетських інноваційних хабів. Оцінку результатів науково-педагогічної діяльності робочої групи інноваційного хабу запропоновано проводити за такими показниками: розвиток навичок науково-дослідної роботи; впровадження інноваційних підходів до практичної індивідуальної та колективної діяльності; робота над обраною науково-методичною темою.
Практична цінність одержаних результатів полягає у виявленні факторів успіху діяльності інноваційних парків на базі університетських хабів з метою створення нових можливостей інноваційного розвитку економіки України. Основна перевага запропонованих університетських інноваційних хабів полягає в тому, що закладені всі необхідні основи для того, щоб вища школа змогла б якнайшвидше інтегрувати результати університетських, академічних та галузевих наук України, а також передові результати досліджень наукової світової спільноти, у реалізацію інноваційних проєктів та розвиток інновацій
Forming efficient agent groups for completing complex tasks
In this paper we produce complexity and impossibility results and develop algorithms for a task allocation problem that needs to be solved by a group of autonomous agents working together. In particular, each task is assumed to be composed of several subtasks and involves an associated predetermined and known overall payment (set by the task’s owner) for its completion. However, the division of this payment among the corresponding contributors is not predefined. Now to accomplish a particular task, all its subtasks need to be allocated to agents with the necessary capabilities and the agents’ corresponding costs need to fall within the preset overall task payment. For this scenario, we first provide a cooperative agent system designer with a practical solution that achieves an efficient allocation. However, this solution is not applicable for non-cooperative settings. Consequently, we go on to provide a detailed analysis where we prove that certain design goals cannot be achieved if the agents are self interested. Specifically, we prove that for the general case, no protocol achieving the efficient solution can exist that is individually rational and budget balanced. We show that although efficient protocols may exist in some settings, these will inevitably be setting-specific
The ability to move to a beat is linked to the consistency of neural responses to sound
The ability to synchronize movement to a steady beat is a fundamental skill underlying musical performance and has been studied for decades as a model of sensorimotor synchronization. Nevertheless, little is known about the neural correlates of individual differences in the ability to synchronize to a beat. In particular, links between auditory-motor synchronization ability and characteristics of the brain's response to sound have not yet been explored. Given direct connections between the inferior colliculus (IC) and subcortical motor structures, we hypothesized that consistency of the neural response to sound within the IC is linked to the ability to tap consistently to a beat. Here, we show that adolescent humans who demonstrate less variability when tapping to a beat have auditory brainstem responses that are less variable as well. One of the sources of this enhanced consistency in subjects who can steadily tap to a beat may be decreased variability in the timing of the response, as these subjects also show greater between-trial phase-locking in the auditory brainstem response. Thus, musical training with a heavy emphasis on synchronization of movement to musical beats may improve auditory neural synchrony, potentially benefiting children with auditory-based language impairments characterized by excessively variable neural responses
Neural responses to sounds presented on and off the beat of ecologically valid music
The tracking of rhythmic structure is a vital component of speech and music perception. It is known that sequences of identical sounds can give rise to the percept of alternating strong and weak sounds, and that this percept is linked to enhanced cortical and oscillatory responses. The neural correlates of the perception of rhythm elicited by ecologically valid, complex stimuli, however, remain unexplored. Here we report the effects of a stimulus' alignment with the beat on the brain's processing of sound. Human subjects listened to short popular music pieces while simultaneously hearing a target sound. Cortical and brainstem electrophysiological onset responses to the sound were enhanced when it was presented on the beat of the music, as opposed to shifted away from it. Moreover, the size of the effect of alignment with the beat on the cortical response correlated strongly with the ability to tap to a beat, suggesting that the ability to synchronize to the beat of simple isochronous stimuli and the ability to track the beat of complex, ecologically valid stimuli may rely on overlapping neural resources. These results suggest that the perception of musical rhythm may have robust effects on processing throughout the auditory system
Getting back on the beat: links between auditory-motor integration and precise auditory processing at fast time scales
The auditory system is unique in its ability to precisely detect the timing of perceptual events and use this information to update motor plans, a skill crucial for language. The characteristics of the auditory system which enable this temporal precision, however, are only beginning to be understood. Previous work has shown that participants who can tap consistently to a metronome have neural responses to sound with greater phase coherence from trial to trial. We hypothesized that this relationship is driven by a link between the updating of motor output by auditory feedback and neural precision. Moreover, we hypothesized that neural phase coherence at both fast time scales (reflecting subcortical processing) and slow time scales (reflecting cortical processing) would be linked to auditory-motor timing integration. To test these hypotheses we asked participants to synchronize to a pacing stimulus and then changed either the tempo or the timing of the stimulus to assess whether they could rapidly adapt. Participants who could rapidly and accurately resume synchronization had neural responses to sound with greater phase coherence. However, this precise timing was limited to the time scale of 10 ms (100 Hz) or faster; neural phase coherence at slower time scales was unrelated to performance on this task. Auditory-motor adaptation, therefore, specifically depends upon consistent auditory processing at fast, but not slow, time scales
Neural entrainment to the rhythmic structure of music
The neural resonance theory of musical meter explains musical beat tracking as the result of entrainment of neural oscillations to the beat frequency and its higher harmonics. This theory has gained empirical support from experiments using simple, abstract stimuli. However, to date there has been no empirical evidence for a role of neural entrainment in the perception of the beat of ecologically valid music. Here we presented participants with a single pop song with a superimposed bassoon sound. This stimulus was either lined up with the beat of the music or shifted away from the beat by 25% of the average interbeat interval. Both conditions elicited a neural response at the beat frequency. However, although the on-the-beat condition elicited a clear response at the first harmonic of the beat, this frequency was absent in the neural response to the off-the-beat condition. These results support a role for neural entrainment in tracking the metrical structure of real music and show that neural meter tracking can be disrupted by the presentation of contradictory rhythmic cues
Detection of new eruptions in the Magellanic Clouds LBVs R 40 and R 110
We performed a spectroscopic and photometric analysis to study new eruptions
in two luminous blue variables (LBVs) in the Magellanic Clouds. We detected a
strong new eruption in the LBV R40 that reached in 2016, which is
around mag brighter than the minimum registered in 1985. During this new
eruption, the star changed from an A-type to a late F-type spectrum. Based on
photometric and spectroscopic empirical calibrations and synthetic spectral
modeling, we determine that R\,40 reached ~K
during this new eruption. This object is thereby probably one of the coolest
identified LBVs. We could also identify an enrichment of nitrogen and r- and
s-process elements. We detected a weak eruption in the LBV R 110 with a maximum
of mag in 2011, that is, around mag brighter than in the
quiescent phase. On the other hand, this new eruption is about mag
fainter than the first eruption detected in 1990, but the temperature did not
decrease below 8500 K. Spitzer spectra show indications of cool dust in the
circumstellar environment of both stars, but no hot or warm dust was present,
except by the probable presence of PAHs in R\,110. We also discuss a possible
post-red supergiant nature for both stars
A Stellar Census of the Tucana-Horologium Moving Group
We report the selection and spectroscopic confirmation of 129 new late-type
(K3-M6) members of the Tuc-Hor moving group, a nearby (~40 pc), young (~40 Myr)
population of comoving stars. We also report observations for 13/17 known
Tuc-Hor members in this spectral type range, and that 62 additional candidates
are likely to be unassociated field stars; the confirmation frequency for new
candidates is therefore 129/191 = 67%. We have used RVs, Halpha emission, and
Li6708 absorption to distinguish contaminants and bona fide members. Our
expanded census of Tuc-Hor increases the known population by a factor of ~3 in
total and by a factor of ~8 for members with SpT>K3, but even so, the K-M dwarf
population of Tuc-Hor is still markedly incomplete. The spatial distribution of
members appears to trace a 2D sheet, with a broad distribution in X and Y, but
a very narrow distribution (+/-5 pc) in Z. The corresponding velocity
distribution is very small, with a scatter of +/-1.1 km/s about the mean UVW
velocity. We also show that the isochronal age (20--30 Myr) and the lithium
depletion age (40 Myr) disagree, following a trend seen in other PMS
populations. The Halpha emission follows a trend of increasing EW with later
SpT, as seen for young clusters. We find that members have been depleted of
lithium for spectral types of K7.0-M4.5. Finally, our purely kinematic and
color-magnitude selection procedure allows us to test the efficiency and
completeness for activity-based selection of young stars. We find that 60% of
K-M dwarfs in Tuc-Hor do not have ROSAT counterparts and would be omitted in
Xray selected samples. GALEX UV-selected samples using a previously suggested
criterion for youth achieve completeness of 77% and purity of 78%. We suggest
new selection criteria that yield >95% completeness for ~40 Myr
populations.(Abridged)Comment: Accepted to AJ; 28 pages, 12 figures, 5 tables in emulateapj forma
Two Wide Planetary-mass Companions to Solar-type Stars in Upper Scorpius
At wide separations, planetary-mass and brown dwarf companions to solar-type stars occupy a curious region of
parameter space not obviously linked to binary star formation or solar system scale planet formation. These
companions provide insight into the extreme case of companion formation (either binary or planetary), and
due to their relative ease of observation when compared to close companions, they offer a useful template
for our expectations of more typical planets. We present the results from an adaptive optics imaging survey
for wide (~50–500 AU) companions to solar-type stars in Upper Scorpius. We report one new discovery of a
~14 M_J companion around GSC 06214−00210and confirm that the candidate planetary-mass companion 1RXS
J160929.1−210524 detected by Lafrenière et al. is in fact comoving with its primary star. In our survey, these
two detections correspond to ~4% of solar-type stars having companions in the 6–20 M_J mass and ~200–500 AU
separation range. This figure is higher than would be expected if brown dwarfs and planetary-mass companions
were drawn from an extrapolation of the binary mass function. Finally, we discuss implications for the formation
of these objects
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