734 research outputs found

    STRUCTURAL CHANGES IN THE WORLD SOCIAL PRODUCTION UNDER THE CONDITIONS OF THE GLOBAL TRANSFORMATION

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    The article considers interdependency between two important economic processes at the present stage which are foreign investments and structural shifts in the economy. These processes have been acquiring new trends and attributes in recent years. The foreign investments are gaining in greater importance in the economic development and the structural shifts are becoming more precisely directed and intensive. Due to the dynamics intensification and nature alteration of these processes at the present stage, the research of the mentioned phenomena in the world economy is gaining in particular topicality

    THE DEVELOPMENT OF THE FUEL AND ENERGY COMPLEX OF UKRAINE UNDER CONDITIONS OF GLOBALIZATION AND INTERNATIONAL INTEGRATION

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    The aim of the article is an attempt to generalize and analyze the role, place and mechanisms of developing economic behavior of Ukraine’s fuel and energy complex subjects on the way to the world processes of globalization and international integration

    Скринінг інтродуцентів за їх алелопатичною активністю до пирію повзучого (Elytrigia repens (L.) Nevski)

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    Screening test of the ethanol and water soluble allelochemicals from 8 species of introduced plants as to their allelopathic activity to quack-grass has been conducted. The species (sunflower Helianthus annuus L., tobacco Nicotiana silvestris L., dock Rumex patientia × R. tianschanicus A. Los., dragonhead Dracocephalum moldavica) promising for further investigation of putting them into practice for allelopathic clearance of quack-grass in agrocenoses have been revealed.Проведено скринінг алелопатичної активності етанольних і водних екстрактів з частин 8 видів інтродуцентів до пирію повзучого. Виявлено види (соняшник однорічний – Helianthus annuus L , тютюн лісовий – Nicotiana silvestris L., щавель кормовий гібридний – Rumex patientia L. × R. tianschanicus A. Los., змієголовник молдавський – Dracocephalum moldavica L.) перспективні для подальших досліджень їх застосування з метою алелопатичного контролю пирію повзучого в агроценозах

    Correlation between Mental Health and Professionally Significant Characteristics of the Future Psychologists Personal Maturity

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    У статті проаналізовано визначення психічного здоров’я, його критерії та рівні, фактори і засоби, що сприяють підвищенню психічного здоров’я. Обґрунтовано значення психічного здоров’я для професії практикуючого психолога. Проаналізовано співвідношення психічного здоров’я і особистісної зрілості. Описано результати дослідження психічного здоров’я і професійно значущих характеристик особистісної зрілості майбутніх психологів. Здійснено кореляційний аналіз між ними. Definitions of mental health, its criteria and levels, factors and means which enhance mental health are analyzed in the article. The value of mental health for the profession of practicing psychologist is grounded. Correlation between mental health and personal maturity is analyzed. The research results of mental health and professionally significant characteristics of the future psychologists personal maturity are described. A cross-correlation analysis between them is carried out

    Perceptual Visibility Model for Temporal Contrast Changes in Periphery

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    Modeling perception is critical for many applications and developments in computer graphics to optimize and evaluate content generation techniques. Most of the work to date has focused on central (foveal) vision. However, this is insufficient for novel wide-field-of-view display devices, such as virtual and augmented reality headsets. Furthermore, the perceptual models proposed for the fovea do not readily extend to the off-center, peripheral visual field, where human perception is drastically different. In this paper, we focus on modeling the temporal aspect of visual perception in the periphery. We present new psychophysical experiments that measure the sensitivity of human observers to different spatio-temporal stimuli across a wide field of view. We use the collected data to build a perceptual model for the visibility of temporal changes at different eccentricities in complex video content. Finally, we discuss, demonstrate, and evaluate several problems that can be addressed using our technique. First, we show how our model enables injecting new content into the periphery without distracting the viewer, and we discuss the link between the model and human attention. Second, we demonstrate how foveated rendering methods can be evaluated and optimized to limit the visibility of temporal aliasing

    Noise-based Enhancement for Foveated Rendering

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    Human visual sensitivity to spatial details declines towards the periphery. Novel image synthesis techniques, so-called foveated rendering, exploit this observation and reduce the spatial resolution of synthesized images for the periphery, avoiding the synthesis of high-spatial-frequency details that are costly to generate but not perceived by a viewer. However, contemporary techniques do not make a clear distinction between the range of spatial frequencies that must be reproduced and those that can be omitted. For a given eccentricity, there is a range of frequencies that are detectable but not resolvable. While the accurate reproduction of these frequencies is not required, an observer can detect their absence if completely omitted. We use this observation to improve the performance of existing foveated rendering techniques. We demonstrate that this specific range of frequencies can be efficiently replaced with procedural noise whose parameters are carefully tuned to image content and human perception. Consequently, these fre- quencies do not have to be synthesized during rendering, allowing more aggressive foveation, and they can be replaced by noise generated in a less expensive post-processing step, leading to improved performance of the ren- dering system. Our main contribution is a perceptually-inspired technique for deriving the parameters of the noise required for the enhancement and its calibration. The method operates on rendering output and runs at rates exceeding 200 FPS at 4K resolution, making it suitable for integration with real-time foveated rendering systems for VR and AR devices. We validate our results and compare them to the existing contrast enhancement technique in user experiments
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