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Journal articles on the topic 'Perceptual absorption'
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Gigilashvili, Davit, Philipp Urban, Jean-Baptiste Thomas, Marius Pedersen, and Jon Yngve Hardeberg. "Perceptual Navigation in Absorption-Scattering Space." Color and Imaging Conference 29, no. 1 (2021): 328–33. http://dx.doi.org/10.2352/issn.2169-2629.2021.29.328.
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Malach, Rafael. "The measurement problem in consciousness research." Behavioral and Brain Sciences 30, no. 5-6 (2007): 516–17. http://dx.doi.org/10.1017/s0140525x0700297x.
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AbstractStates of sensory absorption may offer a means to disentangle perception from report. Interestingly, such states lead to an antagonistic relationship between perceptual and cognitive-access networks, suggesting that perceptual awareness does not depend on a read-out by high order cognitive-access mechanisms. Rather, it may emerge internally, through a cooperative coding dynamics, whereby each neuron simultaneously represents and reads-out the perceptual awareness state.
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Parra, Alejandro, and Rocio Giudici. "Cognitive-Perceptual Features Associated With Nonconventional Healing Practices." Imagination, Cognition and Personality 40, no. 2 (2020): 126–42. http://dx.doi.org/10.1177/0276236620914563.
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Healers not only experience somatic sensations during practices related to their spiritual beliefs, but they also evidence related cognitive-perceptual and personality characteristics. The main aim was to evaluate sensory-perceptual traits involved in healers’ spiritual healing practices. We recruited a sample of 190 practitioners, who completed 5 instruments to evaluate the sensory phenomenology of experiences of healing, interoceptive awareness, and absorption. Significant differences were found in two groups, Practitioners ( n = 71) and Newly Initiated ( n = 119), divided by their practice experience length. Practitioners scored higher on interoceptive body awareness (both emotional and body) and absorption than the newly initiated. An exploratory analysis also showed positive correlations between the total score of sensory healing modalities and the intensity of visualization, body awareness, and absorption scores, as well as higher spirituality and training in various healing techniques. Thus, it is possible to build a personality profile of healers characterized by a combination of interoceptive awareness, ability to focus attention, hypersensitivity and kinetic synesthesia, and ease of mental imagery.
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Glicksohn, Joseph. "Absorption, hallucinations, and the continuum hypothesis." Behavioral and Brain Sciences 27, no. 6 (2004): 793–94. http://dx.doi.org/10.1017/s0140525x04280189.
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The target article, in stressing the balance between neurobiological and psychological factors, makes a compelling argument in support of a continuum of perceptual and hallucinatory experience. Nevertheless, two points need to be addressed. First, the authors are probably underestimating the incidence of hallucinations in the normal population. Second, one should consider the role of absorption as a predisposing factor for hallucinations.
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Chadwick, Alice C., George Cox, Hannah E. Smithson, and Robert W. Kentridge. "Beyond scattering and absorption: Perceptual unmixing of translucent liquids." Journal of Vision 18, no. 11 (2018): 18. http://dx.doi.org/10.1167/18.11.18.
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Stilp, Christian E., and Keith R. Kluender. "Perceptual absorption of listening context when perceiving musical instruments." Journal of the Acoustical Society of America 119, no. 5 (2006): 3241. http://dx.doi.org/10.1121/1.4786012.
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Cao, Mengge. "Immersion and Absorption." Archives of Asian Art 75, no. 1 (2025): 1–28. https://doi.org/10.1215/00666637-11696792.
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Abstract This paper explores the relationship between the development of painting's material formats and the viewer's experiences in China between the mid-eighth and late thirteenth centuries, with a special focus on the issues of size and scale. As various mounting formats emerged and gained their medium specificities respectively during this period, the description of paintings orients toward their material surfaces and their perceptual impact on viewers. Based on the close analysis of three paintings—Nested Rocks, Level Distance (Keshi pingyuan), attributed to Guo Xi; Nomads Hunting with Falcons (Huqi chunlie), attributed to Chen Juzhong; and Ma Lin's Scholar Reclining and Watching the Rise of Clouds (Zuokan yunqi)—as well as Middle-Period (800–1300) textual sources, this paper argues that the “silk-width” (fu), a modular unit for measuring painting sizes, informed two pivotal viewing experiences: immersion and absorption. Immersion is linked to large-scale, multi-silk-width paintings that encapsulate the viewer's physical presence, whereas absorption relates to smaller, half silk-width works that concentrate the viewer's attention on the pictorial surfaces. By examining the historical significance of painting size and scale, this paper contributes an ecological framework that connects art objects, the viewer's experiences, and the viewing environment.
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Tao, Ruihua, Heng Wei, Yinhai Wang, and Virginia P. Sisiopiku. "Modeling Speed Disturbance Absorption following Current State–Control Action–Expected State Chains." Transportation Research Record: Journal of the Transportation Research Board 1934, no. 1 (2005): 83–93. http://dx.doi.org/10.1177/0361198105193400109.
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This paper explores driver behavior in a paired car-following mode in response to a speed disturbance from a front vehicle. A current state– control action–expected state (SAS) chain is developed to provide a framework for modeling of the hierarchy of expected actions incurred during the need for speed disturbance absorption. Three car-following scenarios and one lane-changing scenario are identified with defined perceptual informative variables to describe the process of speed disturbance absorption. Those variables include dynamic spacing versus the follower's speed, disturbance-effecting and -ending spacing, headway, acceleration– deceleration, speed recovery period, speed advantage, and lane-changing duration. A significant improvement in car-following modeling introduced in the paper is the integration of car-following and lane-changing behaviors in the SAS chain. Moreover, critical values of perceptual informative variables are statistically developed as a function of the follower's speed by using observed vehicle trajectory data. Furthermore, models that determine the probability of a lane change in response to a speed disturbance and models for acceptable lane-changing decision-making conditions at the adjacent lanes are developed on the basis of the analysis of observed vehicle trajectory data. The work presented in this paper provides an analysis of speed disturbance and speed absorption phenomena and car-following and lane-changing behaviors at the microscopic level. This work establishes the foundation for further research on multiple speed disturbance absorption and its impact on traffic stabilities at the macroscopic analysis level.
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Glicksohn, Joseph, Orna Salinger, and Anat Roychman. "An Exploratory Study of Syncretic Experience: Eidetics, Synaesthesia and Absorption." Perception 21, no. 5 (1992): 637–42. http://dx.doi.org/10.1068/p210637.
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Synaesthesia and eidetic imagery are both syncretic experiences entailing a dedifferentiation of perceptual qualities. In this paper the correlation between synaesthesia and eidetic imagery is explored. Ten subjects selected for possible eidetic and/or synaesthetic ability were tested in a battery of tasks that tap structural and typographic eidetic imagery, and colour—hearing and colour—mood synaesthesia. It was found that both structural and typographic eidetic imagery were correlated with measures of synaesthesia, indicating a relationship between the two phenomena.
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da Fonseca, María, and Inés Samengo. "Statistical Properties of Color Matching Functions." Neural Computation 33, no. 9 (2021): 2578–601. http://dx.doi.org/10.1162/neco_a_01421.
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Abstract In trichromats, color vision entails the projection of an infinite-dimensional space (the one containing all possible electromagnetic power spectra) onto the three-dimensional space that modulates the activity of the three types of cones. This drastic reduction in dimensionality gives rise to metamerism, that is, the perceptual chromatic equivalence between two different light spectra. The classes of equivalence of metamerism are revealed by color-matching experiments in which observers adjust the intensity of three monochromatic light beams of three preset wavelengths (the primaries) to produce a mixture that is perceptually equal to a given monochromatic target stimulus. Here we use the linear relation between the color matching functions and the absorption probabilities of each type of cone to find particularly useful triplets of primaries. As a second goal, we also derive an analytical description of the trial-to-trial variability and the correlations of color matching functions stemming from Poissonian noise in photon capture. We analyze how the statistical properties of the responses to color-matching experiments vary with the retinal composition and the wavelengths of peak absorption probability, and compare them with experimental data on subject-to-subject variability obtained previously.
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Parra, Alejandro Enrique, and Paola Gimenez-Amarilla. "Relación entre estrés laboral, alucinación y experiencias anómalas entre profesionales de enfermería." Revista Ciencia y Cuidado 13, no. 2 (2016): 22. http://dx.doi.org/10.22463/17949831.761.
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Objetivo: evaluar el tipo y frecuencia de experiencias perceptuales inusuales en ámbitos hospitalarios, así como su relación con el estrés laboral y la absorción, y comparar tales experiencias en enfermeros (os) que las han tenido. Materiales y Métodos: se analizó una muestra de 39 enfermeros (as) con tales experiencias y un grupo control de 61 profesionales (sin experiencias). Las enfermeros (as) completaron cuatro instrumentos: la Encuesta de Experiencias Anómalo/Paranormales en Enfermeras y Trabajadores de la Salud, el Maslach Burnout Inventory que mide el estrés laboral, el Cuestionario de Experiencias Alucinatorias que evalúa la propensión a la alucinación y la Escala de Absorción de Tellegen que evalúa el grado de involucramiento en la percepción. Resultados: los profesionales que reportaron tales experiencias no tendían a experimentar mayor estrés laboral, en comparación con un grupo control, en contra de la principal hipótesis; sin embargo, mostraron mayor frecuencia experiencias perceptivas anómalas asociadas a la capacidad de absorción psicológica, que resultó el principal predictor entre enfermeras con experiencia y el grupo control [β= 0,33, p= 0,005; R2= 0,12] combinando estrés laboral y propensión a la alucinación. Conclusión: el análisis estadístico confirma que los profesionales de enfermería que reportan experiencias perceptuales inusuales, tienden a mostrar mayor absorción psicológica, de igual forma, mayor propensión a alucinar; sin embargo, ninguna de estas variables se relaciona con el estrés laboral. El turno de noche es el más propenso a estas experiencias. PALABRAS CLAVE: estrés laboral, enfermería, parapsicología, percepción extrasensorial.Relationship between work stress, hallucination and abnormal experiences among nursing professionals ABSTRACT Objective: evaluate the type and frequency of unusual perceptual experiences in hospital areas, as well as its relationship with work stress and absorption, and compare such experiences in nurses who have had. Materials and Methods: a sample of 39 nurses with such experiences and a control group of 61 professionals (without experiences) were analyzed. The nurses completed four instruments: The Survey of Abnormal/Paranormal Experiences in Nurses and Health Workers, the Maslach Burnout Inventory that measures work stress, the Questionnaire of Hallucinatory Experiences that evaluates the tendency of hallucinating, and the Tellegen Absorption Scale that assesses the degree of involvement in perception. Results: the professionals that reported such experiences did not tend to experience major work stress, in comparison to a control group, in opposition to the first hypothesis; however, they showed more frequency to abnormal perceptual experiences associated with the capacity of psychological absorption, which resulted in the main predictor between nurses with experience and the control group [β= 0,33, p= 0,005; R2= 0,12] combining work stress and tendency of hallucination. Conclusion: the statistical analysis confirms that the nursing professionals that report unusual perceptual experiences, tend to show a greater psychological absorption, likewise, a greater tendency to hallucinate; however, none of these variables is related with work stress. The night shift is the most prone to these experiences. KEYWORDS: burnout professional, nursing, parapsychology, extrasensory perception. Relação entre estresse de trabalho, alucinação e experiências anômalas entre professionais de enfermagem RESUMO Objetivo: avaliar o tipo e frequência de experiências perceptuais incomuns em âmbitos hospitalários, assim como sua relação com o estresse de trabalho e a absorção, e comparar tais experiências em enfermeiras (os) que tiveram. Materiais e Métodos: analisou-se uma amostra de 39 enfermeiras (os) com tais experiências e um grupo controle de 61 professionais (inexperientes). As enfermeiras (os) completaram quatro instrumentos: a Pesquisa de Experiências Anômalo/Paranormais em Enfermeiras e Trabalhadores da Saúde, o Maslach Burnout Inventory que mede o estresse de trabalho, o Questionário de Experiências Alucinatórias que avalia a propensão à alucinação e a Escala de Absorção de Tellegen que avalia o grau de envolvimento na percepção. Resultados: os professionais que reportaram tais experiências não tenderam a experimentar maior estresse de trabalho, em comparação com um grupo controle, contra a hipótese principal; porém, mostraram maior frequência de experiências perceptivas anômalas associadas à capacidade de absorção psicológica, que resultou o principal preditor entre enfermeiras com experiência e o grupo controle [β= 0,33, p= 0,005; R2= 0,12] combinando estresse de trabalho e propensão à alucinação. Conclusões: a análise estadística confirma que os professionais de enfermagem que reportam experiências perceptuais incomuns, tendem a mostrar maior absorção psicológica; de igual maneira, maior propensão a alucinar; no entanto, nenhuma destas variáveis se relaciona com o estresse de trabalho. O turno da noite é o mais propenso a esse tipo de experiência.PALAVRAS-CHAVE: esgotamento profissional, enfermagem, parapsicologia, percepção extra-sensorial.
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Martínez-Verdú, F., J. Pujol, and J. M. Artigas. "A Study of the Abney Effect in Some Colour Atlases: Designing Opponent Variables and Hue Functions." Perception 26, no. 1_suppl (1997): 254. http://dx.doi.org/10.1068/v970309.
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The Abney effect in colour-appearance systems (Munsell, NCS) means that the lines for identical apparent hue (at constant lightness) do not coincide with the straight lines for constant dominant wavelength. The curvature of constant-hue lines in chromaticity diagrams reflects the fact that cone signals are nonlinear functions of the rate of photon absorption. The most widely used nonlinear intensity-response function in vision is the Naka - Rushton function, which in an intermediate range can be approximated by a square-root function. Our purpose has been to study the Abney effect in the Munsell and NCS colour atlases in order to develop a mathematical-physiological description on this basis, designing the redness - greenness and yellowness - blueness perceptual variables and the perceptual hue function in each colour system. The description is applicable to both biological and machine-vision systems.
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Putikadyanto, Agus Purnomo Ahmad, Gamal Kusuma Zamahsari, and Wiga Alif Violando. "Investigating Positive Perceptions of High School Students' Distance Learning Experiences During a Pandemic." Abjadia 6, no. 2 (2021): 170–81. http://dx.doi.org/10.18860/abj.v6i2.13874.
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COVID-19 has driven pedagogical transformation in the most unexpected and sudden way in education history. Students must switch from face-to-face to distance learning. Trough quantitative research model, this study aims to describe high school students' perceptions of distance learning. Samples were collected from school which might prepare their students for distance learning. Using a questionnaire data collection technique, a sample of 70 high school students received 40 questions derived from three perceptual indicators, namely absorption, understanding, and assessment. The results of this study's absorption, understanding, and assessment indicator scores which were higher than the median indicated that students' perceptions of distance learning were typically positive. This occurs as a result of collaboration between students, teachers, and school staff to accomplish effective distance learning.
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Abid, Ali Nagra, PBL Chaurasia Dr., and Mr.P.N.Mathur. "PASSIVE COOLING METHODS FOR ENERGY EFFICIENT BUILDING COLOUR EFFECT." International Journal of Advances in Engineering & Scientific Research 1, no. 4 (2014): 01–03. https://doi.org/10.5281/zenodo.10720194.
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<strong><em>Abstract</em></strong> <em>Heat absorption is defined as the movement of heat by means of radiation, convection, or conduction. Color is defined as a visual perceptual property. In the comparison of heat absorption vs. color, what is perceived as a simple color is actual various frequencies of light. When presenting a dark color in a heavily heated environment, individuals are actually attracting a higher amount of light frequencies than they would with a light color. The exact opposite applies when presenting a light color in a heavily heated environment. In this case, light colors attract less light frequencies, which make them a better choice when attempting to maintain coolness to heat</em> <strong><em>Keywords: </em></strong><em>Natural cooling, Passive cooling, Techniques, climatic design, energy conservation.</em>
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Trollé, A., C. Marquis-Favre, and N. Hamzaoui. "Auditory Evaluation of Sounds Radiated from a Vibrating Plate Inside a Damped Cavity: Adjustment of the Frequency Resolution of Vibro-Acoustical Computing." Acta Acustica united with Acustica 98, no. 3 (2012): 441–50. http://dx.doi.org/10.3813/aaa.918528.
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The issue of adjusting vibro-acoustical computational cost is especially important when enhancing the sound quality of a mechanical structure using simulation. Simulation parameters must be specified so as to: i) reduce computational cost, and ii) satisfy perceptual constraints. For a simple plate-cavity system, the adjustment of computational cost is investigated in the framework of evaluating the influence of variable structural parameters (cavity absorption, thickness and tightening conditions of the plate) on the auditory perception of sounds radiated inside the cavity. By concentrating on such a simple system, we eventually aim at achieving some recommendations adaptable to different vibrating structures of our environment – in the areas of transport and building – made up of plane elements coupled with enclosures. Considering stationary sounds, this study deals with the adjustment of a major frequency computation parameter, i.e. frequency resolution. The specification of the frequency resolution for vibro-acoustical simulations has a great influence on the spectral envelope of the sounds synthesized afterwards. Here, we modify the spectral envelope of real sounds in order to reproduce the envelope of spectra of synthesized sounds that would be computed in a simulation using a given frequency resolution. The adjustment process pursues the following objective: determining a frequency resolution for which certain perceptual outcomes relative to modified real sounds remain similar to those concerning the original real sounds. These perceptual constraints are pertinent regarding the issue of adjusting vibro-acoustical computational cost. These constraints notably concern the merits of the stimuli and are translated into two adjustment criteria. The results of a first experiment, an auditory evaluation of partial corpora of modified stimuli, highlight that, for the plate-cavity system under consideration, 4 Hz may be an adjusted frequency resolution. The consequences of using this frequency resolution are then further assessed through a second experiment, an auditory evaluation of the complete corpus of modified stimuli. A wider range of perceptual results (perceptual spaces, preference spaces and merits) obtained for the modified sounds and the original sounds are compared. It is shown that both adjustment criteria are fulfilled for the adjusted frequency resolution equal to 4 Hz.
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Xu, Danmi, Jiajia Zhou, Yang Liu, and Xuyu Min. "Underwater Image Enhancement Based on Hybrid Enhanced Generative Adversarial Network." Journal of Marine Science and Engineering 11, no. 9 (2023): 1657. http://dx.doi.org/10.3390/jmse11091657.
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In recent years, underwater image processing has played an essential role in ocean exploration. The complexity of seawater leads to the phenomena of light absorption and scattering, which in turn cause serious image degradation problems, making it difficult to capture high-quality underwater images. A novel underwater image enhancement model based on Hybrid Enhanced Generative Adversarial Network (HEGAN) is proposed in this paper. By designing a Hybrid Underwater Image Synthesis Model (HUISM) based on a physical model and a deep learning method, many richly varied paired underwater images are acquired to compensate for the missing problem of underwater image enhancement dataset training. Meanwhile, the Detection Perception Enhancement Model (DPEM) with Perceptual Loss is designed to transfer the coding knowledge in the form of the gradient to the enhancement model through the perceptual loss, which leads to the generation of visually better and detection-friendly underwater images. Then, the synthesized and enhanced models are integrated into an adversarial network to generate high-quality underwater clear images through game learning. Experiments show that the proposed method significantly outperforms several state-of-the-art methods both qualitatively and quantitatively. Furthermore, it is also demonstrated that the method can improve target detection performance in underwater environments, which has specific application value for subsequent image processing.
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Zhang, Lan, Yuwei Ye, Zixuan Meng, Ning Ma, and Chia-Huei Wu. "Enterprise Digital Transformation, Dynamic Capabilities, and ESG Performance." Journal of Global Information Management 32, no. 1 (2024): 1–20. http://dx.doi.org/10.4018/jgim.335905.
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Digital transformation improves the operational efficiency and perceptual capabilities of businesses and creates a foundation for fulfilling ESG responsibilities. The authors use the theories of technological innovation and dynamic capabilities and select a sample of 4054 listed companies with commercial integration of ESG rating data to explore the mechanisms through which digital transformation affects ESG performance. Dynamic capabilities are further divided into innovation changeability (IT), coordination integration capability (CI), and learning absorption capability (LA) to investigate the mediating effects and summarize the causal path of “digital transformation - dynamic capabilities - ESG performance.” The research focuses on the impact of digital technology on ESG performance with the aim of helping businesses utilize technology more effectively to build dual competitive advantages in digitization and ESG.
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da Fonseca, María, and Inés Samengo. "Novel Perceptually Uniform Chromatic Space." Neural Computation 30, no. 6 (2018): 1612–23. http://dx.doi.org/10.1162/neco_a_01073.
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Chromatically perceptive observers are endowed with a sense of similarity between colors. For example, two shades of green that are only slightly discriminable are perceived as similar, whereas other pairs of colors, for example, blue and yellow, typically elicit markedly different sensations. The notion of similarity need not be shared by different observers. Dichromat and trichromat subjects perceive colors differently, and two dichromats (or two trichromats, for that matter) may judge chromatic differences inconsistently. Moreover, there is ample evidence that different animal species sense colors diversely. To capture the subjective metric of color perception, here we construct a notion of distance in color space based on the physiology of the retina, and is thereby individually tailored for different observers. By applying the Fisher metric to an analytical model of color representation, we construct a notion of distance that reproduces behavioral experiments of classical discrimination tasks. We then derive a coordinate transformation that defines a new chromatic space in which the Euclidean distance between any two colors is equal to the perceptual distance, as seen by one individual subject, endowed with an arbitrary number of color-sensitive photoreceptors, each with arbitrary absorption probability curves and appearing in arbitrary proportions.
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Wilfling, Julia, George Havenith, Margherita Raccuglia, and Simon Hodder. "Perceptual responses of (sports-)clothing-body interaction simulating pre- and post-purchase experience." Communications in Development and Assembling of Textile Products 4, no. 2 (2023): 120–31. http://dx.doi.org/10.25367/cdatp.2023.4.p120-131.
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The appreciation of textile products highly depends on a satisfactory ‘feel’ in fabric-skin contact. The question arising is whether the haptic interpretation of a garment (by hand) is comparable to a feeling produced when it is donned or used in its intended application. Sports T-shirts made from three different fiber types (CO, PES I, PES II) were studied in a pre- and post-purchase scenario by exposing 20 female participants to a hand, a donning (pre-purchase) and running evaluation (post-purchase) in 22 °C and 50% relative humidity (RH). Objective measurements such as skin temperatures, heart rate, body sweat loss, and sweat absorption of the garments were recorded. Subjective data was collected during the fabric hand and the donning evaluation as well as within the running protocol after 5 min, 20 min, and 5 min of cool down. Perceptual responses to 12 hand-/skin-feel descriptors (e.g., rough, smooth) were rated on a scale from 0 (not at all) to 10 (completely) and a feeling of discomfort was given. No significant differences between a hand and a donning evaluation were found in the rating of the sensations. The hand evaluation provided sufficient information for a comfort response to garment wear. The pre- and post-purchase comparison found a significantly lower perception of the feeling of roughness whilst running with the CO shirt and smoothness during running in PES II. The stickiness and comfort perception increased significantly in the post-purchase wear trial. Hence, moisture on the skin provoked through running influences comfort characteristics as well as the perception on haptic cues in t-shirts. Especially surface related haptic characteristics e.g., roughness and smoothness, are reduced.
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Calleri, Cristina, Louena Shtrepi, Alessandro Armando, and Arianna Astolfi. "Evaluation of the influence of building façade design on the acoustic characteristics and auditory perception of urban spaces." Building Acoustics 25, no. 1 (2018): 77–95. http://dx.doi.org/10.1177/1351010x18757353.
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Auditory perception has been proved to have an influence on how we live and move through places and on the use of public spaces. However, despite the numerous studies that have focused on the theme of soundscape and auditory perception of urban spaces, these aspects have not been studied in connection with the design of the building surrounding such spaces. This study focuses on the influence of façade design on acoustic characteristics of an urban space and on the subjective spatial perception of the users. Simulations and auralizations have been conducted through ODEON software (v.13) on the virtual model of a small square of Turin (Italy). Different absorption and scattering coefficients of façade upholsteries have been applied to the façades of the building surrounding the square, choosing from a pool of typical building façade materials. Results of a listening test have proved that the absorption coefficient of the façades has an influence on the subjective perception of space wideness. Moreover, multiple regression analysis has been conducted in order to find a mathematical relation between space wideness perception and objective acoustic parameters. It was shown that the relation between the perceptual aspects and the objective parameters is strongly dependent on the listening position.
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Ayu, Roro, Ambar Mulyono, and Pandu Purwandaru. "Utilization of Luffa for Acoustic Panel on Interior Wall, A Technical and Perceptual Approach." SHS Web of Conferences 189 (2024): 01044. http://dx.doi.org/10.1051/shsconf/202418901044.
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Luffa Cylindrica is one of Indonesia’s biodiversity, which provides several benefits, such as for making handycraft, cleaning tool and event for building materials. This study aims to investigate the ability of Luffa as a sound absorber and its visual impression when applied to interior walls. The first stage is testing the damping ability of panels made of Luffa. Several specimens of Luffa acoustic panels were made with PVAc adhesive and then tested to determine their damping ability. From the test results using the impedance tube method (ASTME1050-12), the samples met the soundproof requirements with an absorption coefficient of 0.15 - 0.206 at a frequency of 1600 Hz. The lost sound transmission values obtained are in the range of 40-60 dB. Thus, Luffa can be used as a good sound-absorbing material. The next stage is the development of the visual design of the panel so that it has a certain aesthetic or perceptual value. Three designs were made with variations in shape and color into nine samples applied to a wall of interior space. The semantic differential method assessment found that simple and decorative impressions dominated when the panel was applied to interior walls.
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Scuri, Sabrina, Nuno Nunes, and Valentina Nisi. "A Questionnaire for Assessing Immersive Websites." Strategic Design Research Journal 15, no. 2 (2023): 150–66. http://dx.doi.org/10.4013/sdrj.2022.152.06.
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Web-immersion – i.e., a deep sense of cognitive and perceptual absorption engendered by the content and interactive features of a website - plays an important role in our modern, digital world. Yet, this topic has received little attention from design and HCI scholars. The lack of tools to assess and measure immersion in the Web may severely limit our ability to understand the nature of such experience, thereby constraining future research in the area. To address this issue, we designed a questionnaire for assessing immersive websites and conducted a preliminary evaluation on it. In this article, we outline the questionnaire design and report on findings from a preliminary study conducted to analyse its reliability and validity. Moreover, we present results from Factor Analysis performed to investigate the dimensionality of the instrument. Finally, we conclude by discussing the implications of our findings, along with limitations of the study and future work.
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Wu, Jiangyan, Guanghui Zhang, and Yugang Fan. "LM-CycleGAN: Improving Underwater Image Quality Through Learned Perceptual Image Patch Similarity and Multi-Scale Adaptive Fusion Attention." Sensors 24, no. 23 (2024): 7425. http://dx.doi.org/10.3390/s24237425.
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The underwater imaging process is often hindered by high noise levels, blurring, and color distortion due to light scattering, absorption, and suspended particles in the water. To address the challenges of image enhancement in complex underwater environments, this paper proposes an underwater image color correction and detail enhancement model based on an improved Cycle-consistent Generative Adversarial Network (CycleGAN), named LPIPS-MAFA CycleGAN (LM-CycleGAN). The model integrates a Multi-scale Adaptive Fusion Attention (MAFA) mechanism into the generator architecture to enhance its ability to perceive image details. At the same time, the Learned Perceptual Image Patch Similarity (LPIPS) is introduced into the loss function to make the training process more focused on the structural information of the image. Experiments conducted on the public datasets UIEB and EUVP demonstrate that LM-CycleGAN achieves significant improvements in Structural Similarity Index (SSIM), Peak Signal-to-Noise Ratio (PSNR), Average Gradient (AG), Underwater Color Image Quality Evaluation (UCIQE), and Underwater Image Quality Measure (UIQM). Moreover, the model excels in color correction and fidelity, successfully avoiding issues such as red checkerboard artifacts and blurred edge details commonly observed in reconstructed images generated by traditional CycleGAN approaches.
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Høffding, Simon, Remy Haswell-Martin, and Nanette Nielsen. "Absorbed Concert Listening: A Qualitative, Phenomenological Inquiry." Philosophies 10, no. 2 (2025): 38. https://doi.org/10.3390/philosophies10020038.
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This paper pursues a phenomenological investigation of the nature of absorbed listening in Western, classical music concert audiences. This investigation is based on a data-set of 16 in-depth phenomenological interviews with audience members from three classical concerts with the Stavanger Symphony Orchestra and the Norwegian Radio Orchestra conducted in spring 2024. We identify seven major themes, namely “sharedness”, “attention”, “spontaneous thought/mental imagery”, “modes of listening” “absorption”, “distraction”, and “strong emotional experiences”, and interpret these in light of relevant ideas in phenomenology, cognitive psychology, and ecological aesthetics, more precisely “passive synthesis” from Husserl, the “sense of agency” from Gallagher, and “mind surfing” from Høffding, Nielsen, and Laeng. We show that, like absorbed musical performance, absorbed musical listening comes in many shapes and can be grasped as instantiating variations of passive synthesis, the sense of agency, and mind surfing. We conclude that absorbed listening circles around a kind of paradox of passivity, characterised by a sense of loss of egoic control arising from particular forms of invested, intensive perceptual, cognitive, and affective engagement.
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Upadhayay, Ranjana. "A COMPARATIVE STUDY OF COLOUR PREFERENCES TOWARDS CLOTHING AMONG YOUNG GIRLS AND BOYS." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–5. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3532.
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Colour, is the visual perceptual property corresponding in human beings to the names called red, green, blue, and so on and so forth. Colours are derived from the spectrum of light, interacting in the eye with the spectral sensitivities of the light receptors. Colour categories and physical specifications are related to objects or materials based on their physical properties such as light absorption, reflection, or emission.The meanings of colors vary according to cultures and environments. Each color has many aspects which may be expressed as the language of color by understanding few concepts. Colour is a form of non-verbal communication. The perception of color stems from varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, and thus colors may be defined and quantified by the degree to which they stimulate these cells.The science of color is called chromatics, colorimetry, or simply color science. It includes the perception of color by the human eye and brain, the origin of color in materials, color in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to as light).
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Rimienė, Agnė, and Vilmantė Liubinienė. "Religious Communication and Television Media: The Problematic Relationship." Coactivity: Philosophy, Communication 23, no. 1 (2015): 52–63. http://dx.doi.org/10.3846/cpc.2015.200.
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The paper aims at analysing the problematic issue of religious communication via the television media. As the positions of media theorists and the church to the use of media in religious communication differ, the paper seeks to compare those two perceptual perspectives. Thus the first part of the paper discusses the nature, impact and communicational role of media, the second analyses television as media from a philosophical perspective and the third part focuses on the analysis of the church documents concerning the practices of existing “tele-evangelization”. The paper examines the insights of the key media theorists and philosophers – Marshall McLuhan, Vilém Flusser, Jean Baudrillard, Neil Postman. McLuhan said that the qualitative changes in human history are associated with the emergence of new communication tools, so it is important to gain the proper knowledge of them for every human being. Since we are inevitably linked to the digital environment in which we live, an essential condition to enable a conscious existence in this environment is reached thorough knowledge of the defective media nature. Church openness to media is a result of different approach to media reality rather than poor absorption of the media nature.
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Moniruzzaman, Mohammad, and Taesun Min. "Curcumin, Curcumin Nanoparticles and Curcumin Nanospheres: A Review on Their Pharmacodynamics Based on Monogastric Farm Animal, Poultry and Fish Nutrition." Pharmaceutics 12, no. 5 (2020): 447. http://dx.doi.org/10.3390/pharmaceutics12050447.
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Nanotechnology is an emerging field of science that is widely used in medical sciences. However, it has limited uses in monogastric farm animal as well as fish and poultry nutrition. There are some works that have been done on curcumin and curcumin nanoparticles as pharmaceutics in animal nutrition. However, studies have shown that ingestion of curcumin or curcumin nanoparticles does not benefit the animal health much due to their lower bioavailability, which may result because of low absorption, quick metabolism and speedy elimination of curcumin from the animal body. For these reasons, advanced formulations of curcumin are needed. Curcumin nanospheres is a newly evolved field of nanobiotechnology which may have beneficial effects in terms of growth increment, anti-microbial, anti-inflammatory and neuroprotective effects on animal and fish health by means of nanosphere forms that are biodegradable and biocompatible. Thus, this review aims to highlight the potential application of curcumin, curcumin nanoparticles and curcumin nanospheres in the field of monogastric farm animal, poultry and fish nutrition. We do believe that the review provides the perceptual vision for the future development of curcumin, curcumin nanoparticles and curcumin nanospheres and their applications in monogastric farm animal, poultry and fish nutrition.
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Maroeto, Maroeto, Wahyu Santoso, and Rossyda Priyadarshini. "Exploring Social Sustainability Based on Perceptions to Determine Critical Land Agricultural Commodities in Midlans Welang Watershed." ASEAN Journal of Management and Business Studies 2, no. 3 (2020): 10–17. http://dx.doi.org/10.26666/rmp.ajmbs.2020.3.2.
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A social aspect reflected through the community's existence is essential in watershed management because it determines the pattern and pattern of land use, so it is important to disclose a perceptual study of watershed ecosystem management. This study analyzes people's perceptions to determine the superior commodities of critical land agriculture in the Welang watershed. The research sample was selected using a non-random sampling technique, namely purposive sampling, as many as 150 people from two sub-districts, namely Purwodadi and Purwosari districts. The data analysis method used is perception analysis based on the average score with parameters of conformity with community aspirations, employment, uniqueness, local and export market potential, and cost, technological, and institutional barriers with the support of IBM SPSS ver software. 23. Research findings are known to obtain good perception values, especially the parameters of labor absorption and community aspirations as important social characteristics to determine the superior commodities of critical land agriculture. On the other hand, the lowest perception or lack of consideration is the potential of local and export markets because of the difficulty of establishing cooperation with exporters and the limited support of local governments that must find solutions to realize social sustainability.
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Fahira, Wina Roza, Fika Mel Lisa, Putri Rahma Dani, Noki Sat Ria, and Merika Setia Wati. "PERSEPSI SISWA KELAS X TERHADAP PENERAPAN KURIKULUM MERDEKA BELAJAR PADA PEMBELAJARAN IPS DI SMA 1 BUKIT SUNDI." JURNAL EDUSCIENCE 9, no. 3 (2022): 902–9. http://dx.doi.org/10.36987/jes.v9i3.3484.
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Abstract This study aims to determine the perceptionof tenth graders on the application of the independent learning curriculum at SMA 1 Bukit Sundi. The method used is percentage descriptive analysis. Sampling was done by random sampling technique using the slovin formula. With 33 people taken as sample. Perceptual indicators according to Walqito (1996) dan Wulandari (2010:12) are : absorption of stimulus, understanding, and assessment or evaluation. The results of the analysis show that the perception of high school students of SMA 1 Bukit Sundi on the application of independent learning curriculum has been well received. Keywords : Perception, Application, Independent Learning Curriculum AbstrakPenelitian ini bertujuan untuk mengetahui Persepsi Siswa kelas X Terhadap Penerapan Kurikulum Merdeka Belajar di SMA 1 Bukit Sundi. Metode yang digunakan yaitu Analisis Deskriptif Persentase. Pengambilan sampel dilakukan dengan teknik random sampling menggunakan Rumus Slovin, dengan 33 orang yang di ambil sebagai sampel. Indikator persepsi menurut Walqito (1996) dan Wulandari (2010:12), yaitu : penyerapan terhadap stimulus, pengertian atau pemahaman dan penilaian atau evaluasi. Hasil analisis menunjukkan bahwa persepsi siswa sma 1 bukit sundi terhadap penerapan kurikulum merdeka belajar sudah dapat diterima dengan baik. Kata Kunci : Persepsi, Penerapan, Kurikulum Merdeka belajar
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Hu, Xianjie, Jing Liu, Heng Li, Hui Liu, and Xiaojun Xue. "An effective transformer based on dual attention fusion for underwater image enhancement." PeerJ Computer Science 10 (April 30, 2024): e1783. http://dx.doi.org/10.7717/peerj-cs.1783.
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Underwater images suffer from color shift, low contrast, and blurred details as a result of the absorption and scattering of light in the water. Degraded quality images can significantly interfere with underwater vision tasks. The existing data-driven based underwater image enhancement methods fail to sufficiently consider the impact related to the inconsistent attenuation of spatial areas and the degradation of color channel information. In addition, the dataset used for model training is small in scale and monotonous in the scene. Therefore, our approach solves the problem from two aspects of the network architecture design and the training dataset. We proposed a fusion attention block that integrate the non-local modeling ability of the Swin Transformer block into the local modeling ability of the residual convolution layer. Importantly, it can adaptively fuse non-local and local features carrying channel attention. Moreover, we synthesize underwater images with multiple water body types and different degradations using the underwater imaging model and adjusting the degradation parameters. There are also perceptual loss functions introduced to improve image vision. Experiments on synthetic and real-world underwater images have shown that our method is superior. Thus, our network is suitable for practical applications.
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Dr., Ranjana Upadhayay. "A COMPARATIVE STUDY OF COLOUR PREFERENCES TOWARDS CLOTHING AMONG YOUNG GIRLS AND BOYS." International Journal of Research - GRANTHAALAYAH Composition of Colours, December,2014 (2017): 1–5. https://doi.org/10.5281/zenodo.887553.
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Colour, is the visual perceptual property corresponding in human beings to the names called red, green, blue, and so on and so forth. Colours are derived from the spectrum of light, interacting in the eye with the spectral sensitivities of the light receptors. Colour categories and physical specifications are related to objects or materials based on their physical properties such as light absorption, reflection, or emission. The meanings of colors vary according to cultures and environments. Each color has many aspects which may be expressed as the language of color by understanding few concepts. Colour is a form of non-verbal communication. The perception of color stems from varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, and thus colors may be defined and quantified by the degree to which they stimulate these cells. The science of color is called chromatics, colorimetry, or simply color science. It includes the perception of color by the human eye and brain, the origin of color in materials, color in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to as light).
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Liu, Tiancheng. "LACC-RCE: A Local Adaptive Color Correction and Rayleigh-Based Contrast Enhancement Method for Underwater Image Enhancement." Journal of Electronic Research and Application 9, no. 2 (2025): 140–49. https://doi.org/10.26689/jera.v9i2.9906.
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Underwater images are inherently degraded by color distortion, contrast reduction, and uneven brightness, primarily due to light absorption and scattering in water. To mitigate these challenges, a novel enhancement approach is proposed, integrating Local Adaptive Color Correction (LACC) with contrast enhancement based on adaptive Rayleigh distribution stretching and CLAHE (LACC-RCE). Conventional color correction methods predominantly employ global adjustment strategies, which are often inadequate for handling spatially varying color distortions. In contrast, the proposed LACC method incorporates local color analysis, tone-weighted control, and spatially adaptive adjustments, allowing for region-specific color correction. This approach effectively enhances color fidelity and perceptual naturalness, addressing the limitations of global correction techniques. For contrast enhancement, the proposed method leverages the global mapping characteristics of the Rayleigh distribution to improve overall contrast, while CLAHE is employed to adaptively enhance local regions. A weighted fusion strategy is then applied to synthesize high-quality underwater images. Experimental results indicate that LACC-RCE surpasses conventional methods in color restoration, contrast optimization, and detail preservation, thereby enhancing the visual quality of underwater images. This improvement facilitates more reliable inputs for underwater object detection and recognition tasks.
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Lyu, Yiwei, Sung Jik Cha, Cheng Jiang, et al. "Step-Calibrated Diffusion for Biomedical Optical Image Restoration." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 6 (2025): 5946–54. https://doi.org/10.1609/aaai.v39i6.32635.
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High-quality, high-resolution medical imaging is essential for clinical care. Raman-based biomedical optical imaging uses non-ionizing infrared radiation to evaluate human tissues in real time and is used for early cancer detection, brain tumor diagnosis, and intraoperative tissue analysis. Unfortunately, optical imaging is vulnerable to image degradation due to laser scattering and absorption, which can result in diagnostic errors and misguided treatment. Restoration of optical images is a challenging computer vision task because the sources of image degradation are multi-factorial, stochastic, and tissue-dependent, preventing a straightforward method to obtain paired low-quality/high-quality data. Here, we present Restorative Step-Calibrated Diffusion (RSCD): an unpaired diffusion-based image restoration method that uses a step calibrator model to dynamically determine the number of steps required to complete the reverse diffusion process for image restoration. RSCD outperforms other widely used unpaired image restoration methods on both image quality and perceptual evaluation metrics for restoring optical images. Medical imaging experts consistently prefer images restored using RSCD in blinded comparison experiments and report minimal to no hallucinations. Finally, we show that RSCD improves performance on downstream clinical imaging tasks, including automated brain tumor diagnosis and deep tissue imaging.
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Tan, Eduard Sioe-Hao, and Valentijn Visch. "Co-Imagination of Fictional Worlds in Film Viewing." Review of General Psychology 22, no. 2 (2018): 230–44. http://dx.doi.org/10.1037/gpr0000153.
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The typical experience of narrative film is characterized by a remarkable intensity as to absorption and emotion. Current explanations attribute the experience to the realistic perceptual impact of the film. This theoretical article sets out to explain the experience as the result first of the film-viewer's acts of imagination of fictional worlds. More specifically, it seems suitable to conceptualize the film experience as arising from pretense play. Pretense play can afford room for free imagination leading to intense emotion, as well as restrictions to the imagination “quarantining” ( Leslie, 1987 ) pretended fictional worlds from the real world, thus safeguarding the enjoyability and adaptiveness of the experience. Applying the concept of joint pretense for the first time to film, we follow Walton (1990) in his account of fiction as an institutionalized form of pretense play enabling intense emotional experiences in the cinema, including unpleasant ones to be appreciated by film-viewers. Thus, the model of co-imagination has as components (a) the generation of fictional film worlds—the acts of pretense in the narrower sense; (b) the participation in; and (c) the appreciation of these. We argue that the account of the experience can be improved if it is conceived as the outcome of joint pretense, in which film-viewers in their imagination activity team up with filmmakers—experts by eminence in prompting the viewers’ imagination. Finally, in our model of co-imagination in popular film joint pretense acts are layered ( Clark, 1996 ) as to the contents of the fictional worlds, with the lowest layer representing the collaboration for imagination between filmmaker and film-viewer in the actual world and the higher ones representing fictional worlds of increasing depth of imagination. Because of asymmetric access relations among layers, returns to the actual world in advanced pretense are difficult, which helps quarantining and the sense of absorption.
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Alvarez, Natalie. "Bodies Unseen." Janus Head 12, no. 2 (2011): 35–48. http://dx.doi.org/10.5840/jh201112227.
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The struggle to “adapt” to the presence of the corpse serves as the central turning point for this investigation into the theatrical encounters with the corpse in the early modern anatomy theatre. Beginning with novelist W.G. Sebald’s claim, in The Rings of Saturn, that the art of anatomy was a way of “making the reprobate body invisible,” Alvarez queries how the corpse as the central “gure of this theatrical space challenges conventional modes of theatrical looking and how the particular viewing procedures invited by the anatomy theatre, as a theatrical space, effectively make the body “unseen.” Using Restoration diarist Samuel Pepys’ documented encounter with a corpse and the early phenomenologist Aurel Kolnai’s writings On Disgust, Alvarez attempts to account for the “perceptual and interpretive black hole” that the corpse presents in this schema. The corpse’s “radical actuality” and, paradoxically, its “surplus of life” act as a cipher that cuts through the virtual space constructed by the anatomical demonstration, undermining the gravitas of the scientific gaze that has acquired its weight in contradistinction to the theatricality of the event. But the corpse’s “radical actuality” and its “surplus of life” introduces a danse macabre of theatrical looking that moves between absorption and repulsion, reversing the otherwise consumptive gaze of the onlooker.
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Tanzid, Mehbuba, Ali Sobhani, Christopher J. DeSantis, et al. "Imaging through plasmonic nanoparticles." Proceedings of the National Academy of Sciences 113, no. 20 (2016): 5558–63. http://dx.doi.org/10.1073/pnas.1603536113.
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The optical properties of metallic nanoparticles with plasmon resonances have been studied extensively, typically by measuring the transmission of light, as a function of wavelength, through a nanoparticle suspension. One question that has not yet been addressed, however, is how an image is transmitted through such a suspension of absorber-scatterers, in other words, how the various spatial frequencies are attenuated as they pass through the nanoparticle host medium. Here, we examine how the optical properties of a suspension of plasmonic nanoparticles affect the transmitted image. We use two distinct ways to assess transmitted image quality: the structural similarity index (SSIM), a perceptual distortion metric based on the human visual system, and the modulation transfer function (MTF), which assesses the resolvable spatial frequencies. We show that perceived image quality, as well as spatial resolution, are both dependent on the scattering and absorption cross-sections of the constituent nanoparticles. Surprisingly, we observe a nonlinear dependence of image quality on optical density by varying optical path length and nanoparticle concentration. This work is a first step toward understanding the requirements for visualizing and resolving objects through media consisting of subwavelength absorber-scatterer structures, an approach that should also prove useful in the assessment of metamaterial or metasurface-based optical imaging systems.
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Bitton, Pierre-Paul, Ulrike K. Harant, Roland Fritsch, Connor M. Champ, Shelby E. Temple, and Nico K. Michiels. "Red fluorescence of the triplefin Tripterygion delaisi is increasingly visible against background light with increasing depth." Royal Society Open Science 4, no. 3 (2017): 161009. http://dx.doi.org/10.1098/rsos.161009.
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The light environment in water bodies changes with depth due to the absorption of short and long wavelengths. Below 10 m depth, red wavelengths are almost completely absent rendering any red-reflecting animal dark and achromatic. However, fluorescence may produce red coloration even when red light is not available for reflection. A large number of marine taxa including over 270 fish species are known to produce red fluorescence, yet it is unclear under which natural light environment fluorescence contributes perceptively to their colours. To address this question we: (i) characterized the visual system of Tripterygion delaisi, which possesses fluorescent irides, (ii) separated the colour of the irides into its reflectance and fluorescence components and (iii) combined these data with field measurements of the ambient light environment to calculate depth-dependent perceptual chromatic and achromatic contrasts using visual modelling. We found that triplefins have cones with at least three different spectral sensitivities, including differences between the two members of the double cones, giving them the potential for trichromatic colour vision. We also show that fluorescence contributes increasingly to the radiance of the irides with increasing depth. Our results support the potential functionality of red fluorescence, including communicative roles such as species and sex identity, and non-communicative roles such as camouflage.
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Hota, S., A. Podlewska, A. Rizos, DV Wamelen, and K. Chaudhuri. "FM2-2 Exploratory analysis whether wearable sensor data can correlate with aspects of non-motor symptoms in parkinson’s: a real life study with the parkinson’s kinetigraphTM." Journal of Neurology, Neurosurgery & Psychiatry 90, no. 3 (2019): e24.1-e24. http://dx.doi.org/10.1136/jnnp-2019-abn.75.
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ObjectivesTo determine the association between the range and nature of non-motor symptoms (NMS) in people with Parkinson’s (PwP) and validated Parkinson’s KinetigraphTM (PKG) outcome measures.DesignCross-sectional retrospective study of participants enrolled in the Non-motor Longitudinal International Study (NILS, UKCRN No: 10084) at King’s College Hospital, London.Subjects108 PwP with a PKG recording within 4 months of a NILS assessment were included in the analysis.MethodsPKG is a validated accelerometery-based measure for motor function in PwP, reporting scores for global bradykinesia (BKS) and dyskinesia (DKS). NMS were assessed by the NMS scale (NMSS).ResultsUsing multiple linear regression, BKS was predicted by NMSS domains 6 (gastrointestinal tract; p=0.006) and 8 (sexual function; p=0.003). DKS was predicted by domains 3 (mood/cognition; p=0.016), domain 4 (perceptual problems; p=0.025), domain 6 (gastrointestinal tract; p=0.029) and domain 9 (miscellaneous, p=0.003). In these domains, anxiety, delusions, dysphagia, hyposmia, weight change and hyperhidrosis significantly predicted DKS. In addition, carbidopa dose predicted NMSS total scores (p=0.037), but not total LEDD (p=0.91).ConclusionsIn PwP, measures of BK and DK were mainly associated with gastrointestinal problems, underpinning the importance of gastric absorption of oral medications and constipation and the related motor effects in PwP. Interestingly, carbidopa appears to have a role in non-motor symptoms in PwP, which deserves further investigation.
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Kawabe, Takahiro, Kazushi Maruya, and Shin’ya Nishida. "Perceptual transparency from image deformation." Proceedings of the National Academy of Sciences 112, no. 33 (2015): E4620—E4627. http://dx.doi.org/10.1073/pnas.1500913112.
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Human vision has a remarkable ability to perceive two layers at the same retinal locations, a transparent layer in front of a background surface. Critical image cues to perceptual transparency, studied extensively in the past, are changes in luminance or color that could be caused by light absorptions and reflections by the front layer, but such image changes may not be clearly visible when the front layer consists of a pure transparent material such as water. Our daily experiences with transparent materials of this kind suggest that an alternative potential cue of visual transparency is image deformations of a background pattern caused by light refraction. Although previous studies have indicated that these image deformations, at least static ones, play little role in perceptual transparency, here we show that dynamic image deformations of the background pattern, which could be produced by light refraction on a moving liquid’s surface, can produce a vivid impression of a transparent liquid layer without the aid of any other visual cues as to the presence of a transparent layer. Furthermore, a transparent liquid layer perceptually emerges even from a randomly generated dynamic image deformation as long as it is similar to real liquid deformations in its spatiotemporal frequency profile. Our findings indicate that the brain can perceptually infer the presence of “invisible” transparent liquids by analyzing the spatiotemporal structure of dynamic image deformation, for which it uses a relatively simple computation that does not require high-level knowledge about the detailed physics of liquid deformation.
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Muhammad, Imran, Anne Heimes, and Michael Vorländer. "Interactive real-time auralization of airborne sound insulation in buildings." Acta Acustica 5 (2021): 19. http://dx.doi.org/10.1051/aacus/2021013.
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Sound insulation auralization can be used as valuable tool to study the perceptual aspects of sound transmission in built environments for assessment of noise effects on people. It may help to further develop guidelines for building constructions. One advanced goal of real-time sound insulation auralization is to appropriately reproduce the condition of noise effects on the human perception and cognitive performance in dynamic and interactive situations. These effects depend on the kind of noise signal (i.e. speech, music, traffic noise, etc.) and on the context. This paper introduces a sound insulation auralization model. The sound insulation filters are constructed for virtual buildings with respect to complex sound propagation effects for indoor and outdoor sound sources. The approach considers the source room sound field with direct and diffuse components along with source directivity and position. The transfer functions are subdivided into patches from the source room to the receiver room, which also covers composite building elements, thus providing more detail to the actual building situations. Furthermore, the receiving room acoustics includes the reverberation of the room based on its mean free path, absorption and binaural transfer functions between its radiating walls elements and the listener. This more exact approach of sound insulation model agrees reasonably well with the ISO standard (i.e. diffuse field theory) under standard settings. It is also shown that the sound field significantly influences the transmitted energies via building elements depending on the directivity and position of the source. The proposed method is validated as a general scheme and includes more details for real-time auralization in specific situations especially in the cases where the simplified diffuse sound field approach fails. It is capable to be used in interactive Virtual Reality (VR) systems, which opens new opportunities for psychoacoustics research in noise effects on human.
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Jäger, Ralf, Kevin A. Shields, Ryan P. Lowery, et al. "ProbioticBacillus coagulansGBI-30, 6086 reduces exercise-induced muscle damage and increases recovery." PeerJ 4 (July 21, 2016): e2276. http://dx.doi.org/10.7717/peerj.2276.
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Objective.Probiotics have been reported to support healthy digestive and immune function, aid in protein absorption, and decrease inflammation. Further, a trend to increase vertical jump power has been observed following co-administration of protein and probiotics in resistance-trained subjects. However, to date the potential beneficial effect of probiotics on recovery from high intensity resistance exercise have yet to be explored. Therefore, this study examined the effect of co-administration of protein and probiotics on muscle damage, recovery and performance following a damaging exercise bout.Design.Twenty nine (n= 29) recreationally-trained males (mean ± SD; 21.5 ± 2.8 years; 89.7 ± 28.2 kg; 177.4 ± 8.0 cm) were assigned to consume either 20 g of casein (PRO) or 20 g of casein plus probiotic (1 billion CFUBacillus coagulansGBI-30, 6086, PROBC) in a crossover, diet-controlled design. After two weeks of supplementation, perceptional measures, athletic performance, and muscle damage were analyzed following a damaging exercise bout.Results.The damaging exercise bout significantly increased muscle soreness, and reduced perceived recovery; however, PROBC significantly increased recovery at 24 and 72 h, and decreased soreness at 72 h post exercise in comparison to PRO. Perceptual measures were confirmed by increases in CK (PRO: +266.8%,p= 0.0002; PROBC: +137.7%,p= 0.01), with PROBC showing a trend towards reduced muscle damage (p= 0.08). The muscle-damaging exercise resulted in significantly increased muscle swelling and Blood Urea Nitrogen levels in both conditions with no difference between groups. The strenuous exercise significantly reduced athletic performance in PRO (Wingate Peak Power; PRO: (−39.8 watts, −5.3%,p= 0.03)), whereas PROBC maintained performance (+10.1 watts, +1.7%).Conclusions.The results provide evidence that probiotic supplementation in combination with protein tended to reduce indices of muscle damage, improves recovery, and maintains physical performance subsequent to damaging exercise.
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Naik, Parth, Rupsa Chakraborty, Sam Thiele, and Richard Gloaguen. "Scalable Hyperspectral Enhancement via Patch-Wise Sparse Residual Learning: Insights from Super-Resolved EnMAP Data." Remote Sensing 17, no. 11 (2025): 1878. https://doi.org/10.3390/rs17111878.
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A majority of hyperspectral super-resolution methods aim to enhance the spatial resolution of hyperspectral imaging data (HSI) by integrating high-resolution multispectral imaging data (MSI), leveraging rich spectral information for various geospatial applications. Key challenges include spectral distortions from high-frequency spatial data, high computational complexity, and limited training data, particularly for new-generation sensors with unique noise patterns. In this contribution, we propose a novel parallel patch-wise sparse residual learning (P2SR) algorithm for resolution enhancement based on fusion of HSI and MSI. The proposed method uses multi-decomposition techniques (i.e., Independent component analysis, Non-negative matrix factorization, and 3D wavelet transforms) to extract spatial and spectral features to form a sparse dictionary. The spectral and spatial characteristics of the scene encoded in the dictionary enable reconstruction through a first-order optimization algorithm to ensure an efficient sparse representation. The final spatially enhanced HSI is reconstructed by combining the learned features from low-resolution HSI and applying an MSI-regulated guided filter to enhance spatial fidelity while minimizing artifacts. P2SR is deployable on a high-performance computing (HPC) system with parallel processing, ensuring scalability and computational efficiency for large HSI datasets. Extensive evaluations on three diverse study sites demonstrate that P2SR consistently outperforms traditional and state-of-the-art (SOA) methods in both quantitative metrics and qualitative spatial assessments. Specifically, P2SR achieved the best average PSNR (25.2100) and SAM (12.4542) scores, indicating superior spatio-spectral reconstruction contributing to sharper spatial features, reduced mixed pixels, and enhanced geological features. P2SR also achieved the best average ERGAS (8.9295) and Q2n (0.5156), which suggests better overall fidelity across all bands and perceptual accuracy with the least spectral distortions. Importantly, we show that P2SR preserves critical spectral signatures, such as Fe2+ absorption, and improves the detection of fine-scale environmental and geological structures. P2SR’s ability to maintain spectral fidelity while enhancing spatial detail makes it a powerful tool for high-precision remote sensing applications, including mineral mapping, land-use analysis, and environmental monitoring.
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MENZEL, R., E. STEINMANN, J. DE SOUZA, and W. BACKHAUS. "Spectral Sensitivity of Photoreceptors and Colour Vision in the Solitary Bee, Osmia Rufa." Journal of Experimental Biology 136, no. 1 (1988): 35–52. http://dx.doi.org/10.1242/jeb.136.1.35.
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The spectral sensitivity of single photoreceptors of Osmia rufa was determined by a fast voltage-clamp technique. Three receptor types were found whose spectral sensitivity functions followed a rhodopsin-like photopigment absorption function with λmax values at 348nm (ultraviolet receptor), 436nm (blue receptor) and 572nm (green receptor). The λmax of the green receptor in Osmia rufa is shifted to much longer wavelengths compared with other insect species. Discrimination of colour signals was tested after training a bee at the entrance to its nest. The colour signals were filter discs (70 mm in diameter) with a hole (10 mm in diameter) in the centre and the bees quickly learned to use the coloured disc as a marker of the nest entrance. Tests were dual forced-choice tests with two coloured discs closely positioned next to each other. 94 different tests were each repeated 5–15 times and were performed after training to 12 different colour signals. A photoreceptor model was used to calculate the loci of the colour signals in a three-dimensional colour space and in a chromaticity diagram. The perceptual distance between the colour loci was calculated as line elements (minimum number of just noticeable difference, jnd-steps), which were based on the noiseproperties of the photoreceptors. The discrimination determined by the behavioural tests correlated very well with the jnd-steps. The correlation was better for the line elements in the colour plane than in the colour space. Osmia rufa was compared with the honeybee Apis mellifera and the stingless bee Melipona quadrifasciata. There is no difference in colour selection between Osmia and Apis, whereas Melipona discriminates less well in the violet-blue region. The model calculation was used to compare the chromaticity diagrams and the spectral discrimination functions of the three species. It is concluded that the receptor model used in this study predicts the discrimination behaviour of the three bee species very well. Therefore, comparative studies on colour vision in flowervisiting insects may be based on spectral measurements of the photoreceptors, and in many cases this reduces the extent of laborious behavioural studies.
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Hove, Michael J., Johannes Stelzer, Till Nierhaus, et al. "Brain Network Reconfiguration and Perceptual Decoupling During an Absorptive State of Consciousness." Cerebral Cortex 26, no. 7 (2015): 3116–24. http://dx.doi.org/10.1093/cercor/bhv137.
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Traer, James, and Josh H. McDermott. "Statistics of natural reverberation enable perceptual separation of sound and space." Proceedings of the National Academy of Sciences 113, no. 48 (2016): E7856—E7865. http://dx.doi.org/10.1073/pnas.1612524113.
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In everyday listening, sound reaches our ears directly from a source as well as indirectly via reflections known as reverberation. Reverberation profoundly distorts the sound from a source, yet humans can both identify sound sources and distinguish environments from the resulting sound, via mechanisms that remain unclear. The core computational challenge is that the acoustic signatures of the source and environment are combined in a single signal received by the ear. Here we ask whether our recognition of sound sources and spaces reflects an ability to separate their effects and whether any such separation is enabled by statistical regularities of real-world reverberation. To first determine whether such statistical regularities exist, we measured impulse responses (IRs) of 271 spaces sampled from the distribution encountered by humans during daily life. The sampled spaces were diverse, but their IRs were tightly constrained, exhibiting exponential decay at frequency-dependent rates: Mid frequencies reverberated longest whereas higher and lower frequencies decayed more rapidly, presumably due to absorptive properties of materials and air. To test whether humans leverage these regularities, we manipulated IR decay characteristics in simulated reverberant audio. Listeners could discriminate sound sources and environments from these signals, but their abilities degraded when reverberation characteristics deviated from those of real-world environments. Subjectively, atypical IRs were mistaken for sound sources. The results suggest the brain separates sound into contributions from the source and the environment, constrained by a prior on natural reverberation. This separation process may contribute to robust recognition while providing information about spaces around us.
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Vriesendorp, Hielke, та Gijsbert Rutten. "Het einde van het Poldernederlands?* : De perceptie van /εi/ en /ai/ in standaardtalig Nederlands in Nederland". Nederlandse Taalkunde 24, № 3 (2019): 323–56. http://dx.doi.org/10.5117/nedtaa2019.3.003.vrie.
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Abstract The end of Polder Dutch? De perception of /εi/ and /ai/ in Standard Dutch in the Netherlands.While most early research on so-called Poldernederlands ‘Polder Dutch’ (Van Bezooijen 1999; Van Bezooijen & Van den Berg 2001) finds differences in perceptions between this supposedly substandard variety and Standard Dutch, this paper aims to demonstrate that present-day language users do not distinguish between the two varieties (anymore). Two combined matched-guise experiments show that non-linguists are unable to name the variety and that they do not score them differently on a large number of evaluative scales. The results suggest the end of Polder Dutch as a perceptually separate variety, and the absorption of its most marked feature, viz. the lowering of /εi/ to /ai/ into Standard Dutch.
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Couroux, Marc. "Some Ideas about Viewer Re-Mobilization from a Practice-in-Progress." Circuit 16, no. 3 (2010): 83–94. http://dx.doi.org/10.7202/902415ar.
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This article presents a practical view of one artist's dealings with the social and political aspects of the concert, seen through a variety of works realized between 1999 and 2006. Couroux's work is centered around the reintegration of the listener-viewer into the social event, specifically the concert format, which has functioned as a control group, enabling him to test some ideas about viewer mobilization. Exploring the potential of art as a motor for social investigation, he exploits the perceptual and cultural prejudices of the viewer to create a productive, creative zone of inquiry. A brief history of anti-virtuosity begins the article (with examples from Xenakis, Barrett, Ferneyhough and Glenn Gould, all of whom have called into question in various ways the totalized persona of the performer), ushering in the feedback processes of his work American Dreaming and the anti-absorptive strategies which underlie le contrepoint académique (sic). Finally, the position of the listener is problematized in two works: Blowback at Breakfast, in which he/she is enmeshed in a panopticon-like voyeuristic bind with the performer, and Watergating, in which shifting modes of aurality force a deconstruction of the listening process itself.
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Parra, Alejandro. "Factores de personalidad, perceptuales y cognitivas asociadas con las experiencias anómalo/paranormales en personal de enfermería." Revista CUIDARTE 8, no. 3 (2017): 1733. http://dx.doi.org/10.15649/cuidarte.v8i3.408.
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Introducción: Un número de experiencias paranormales aparecen relatadas por enfermeros que consisten en visiones del lecho de muerte y otros fenómenos anómalos. El objetivo de este estudio fue determinar el grado de ocurrencia de ciertas experiencias perceptuales inusuales en entornos hospitalarios, las denominadas Experiencias Anómalo/Paranormales con frecuencia reportadas por médicos y enfermeras en el ámbito hospitalario. Materiales y Métodos: Estudio transversal y analítico. Se administraron cinco escalas, Encuesta de Experiencias Anómalo/Paranormales para Enfermeras, Maslach Burnout Inventory, Tellegen Absorption Scale, Inventario Oxford-Liverpool de Sentimientos y Experiencias, y Test de Empatía Cognitivo Afectiva a 344 enfermeros de 36 hospitales y centros de salud de Buenos Aires, Argentina. Resultados: Las experiencias más comunes de las enfermeras son: sensación de presencia y/o apariciones, oír ruidos, voces o diálogos, llantos o quejas, experiencias intuitivas y extrasensoriales en relación con sus pacientes, o bien la recepción de esas experiencias por parte de sus propios pacientes, tales como experiencias cercanas a la muerte, prácticas de oración o intervenciones religiosas con sanaciones espontáneas, y otras experiencias anómalas relacionadas con niños. Discusión: Las enfermeras con experiencias también tendieron a mayor absorción, lo cual se confirmó; una tendencia a la esquizotipia y mayor empatía cognitiva y comprensión emocional que en enfermeras sin experiencias. Conclusiones: Aunque no se confirmó la hipótesis según la cual, enfermeras con experiencias tienden a experimentar mayor estrés laboral, sin embargo se encontró que las enfermeras con experiencias obtuvieron una puntuación más alta en el factor Despersonalización que las enfermeras sin experienciasCómo citar este artículo: Parra A. Factores de personalidad, perceptuales y cognitivas asociadas con las experiencias anómalo/paranormales en personal de enfermería. Rev Cuid. 2017; 8(3): 1733-48. http://dx.doi.org/10.15649/cuidarte.v8i3.408
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Karadjova, Lilyana Georgieva. "Installation Art and the Elaboration of Psychological Concepts: A Definition of the Term ‘Excursive’." Arts 12, no. 3 (2023): 87. http://dx.doi.org/10.3390/arts12030087.
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This paper focuses on installation art and its potential to employ and elaborate psychological concepts. As Claire Bishop argues, installation art has a psychologically absorptive character because it activates and immerses the viewing subject. To analyze this immersive experience, she refers to Maurice Merleau-Ponty and the premise that subject and object are intertwined and reciprocally interdependent. In this paper I refer to these registers of artistic perception in order to explore the concept of ‘excursive object’, which was introduced by the contemporary artist and theorist Peter Tzanev in a site-specific installation (Credo Bonum Gallery, Sofia, 2018). It refers to both Elizabeth Helsinger’s term ‘excursive sight’ and to Michel Foucault’s notion of ‘discursive object’. Whereas the latter is a discursive textual formation, which consists of apparent internal relations inside a statement, the excursive object of art emerges as a less perceivable configuration of elements. It does not result in a clear perceptual experience and reflects the unstable phenomenological interdependence of subject and object. Thus, Tzanev’s novel excursive objects depart from the usual modes of perception. His concept reveals the viewer’s particular experience of unstable configurations of elements in installation art. Furthermore, it could be explored as a resourceful term to describe perceptive situations in the psychology of contemporary art.
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Beheregarai Finger, Andrew, Barbara B. Flynn, and Ely Laureanos Paiva. "Anticipation of new technologies: supply chain antecedents and competitive performance." International Journal of Operations & Production Management 34, no. 6 (2014): 807–28. http://dx.doi.org/10.1108/ijopm-09-2012-0386.
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Purpose – The purpose of this paper is to propose and empirically validates a measure of the anticipation of new technologies (ANT) construct, first suggested by Hayes and Wheelwright (1984). ANT allows establishment of a sustained competitive advantage through acquiring new technologies and the capability to use them, in advance of actual need. The theoretical foundation for ANT is developed using the literature on absorptive capacity. Several elements of supply chain management are proposed as antecedents to ANT. Design/methodology/approach – Perceptual survey data from 317 manufacturing plants in ten countries was used to test the hypotheses using structural equation modeling and confirmatory factor analysis. Findings – The key supply chain antecedents of ANT are supply chain planning, internal integration and supplier integration. ANT was related to both operational and cost performance. Research limitations/implications – Potential limitations include the use of an existing database, the plant as the unit of analysis and the need to include customer integration, as well as supplier integration. The results demonstrate the competitive importance of the ANT construct and the key role that relationships with suppliers play in its development. Practical implications – This research sheds new light on a construct whose roots are inherently practical. Suppliers and their extended networks are an important source of external knowledge about technology and future customer needs, thus, supply chain relationships are an important contributor to ANT. Originality/value – Although the role of technology in establishing a competitive advantage has been thoroughly studied, the effectiveness of developing technologies that are expected to be important in the future has not, although this concept was first introduced almost 30 years ago. The authors use absorptive capacity to develop the role of supply chain relationships in building an organization's ANT capability, contributing to the operations strategy literature by grounding a practical construct in the theoretical literature and demonstrating its importance.