Search Results (38)

If modern Western disciplinary structures, laid forth by Dilthey and others in the 19th century, have helped structure the world in ways that bring about climate change and gross economic inequities (along with many “good” things such as vaccines and some modern comforts), how might we re-structure our thinking and learning in ways that address these violent lacunae? What does it mean to educate in a truly globalized world that is facing climate change, extinction, and growing injustice? The answer to that surely cannot be “more of the same”. Following the work of critical theorists and the ideas of Paulo Freire and bell hooks, among others, this essay argues that education should be about imagining and working toward a more just and ecologically sound version of the planetary future in a way that is attentive to as much input as possible from multiple perspectives (human and non). The goals of such an education are connective, grounding, and encountering “others” rather than reductive, productive, and geared toward technology transfer. What would it mean to undiscipline or open our disciplinary categories in ways that reattune us to the changing, entangled planet of which we are a part? What will it take to develop planetary humanities and technologies? If humans are not exceptions to the rest of the natural world, and if the nonhuman world is not just dead matter to be used toward human ends, then how do we go about re-grounding our epistemologies within the planet, rather than continuously thinking “out of this world”? The first part of this essay offers a critique of the reductive and productive model that turns the world into a “standing reserve” for use by some humans. The second part of the essay outlines some principles for knowledge that are more connective, grounding and enable us to counter the multiple others within the planetary community. Such “planetary” knowledge reminds humans of the humus of our humanity, connects us to other life found through compassion (to suffer with), reminds us of the justice of good company (sharing of bread/resources), and focuses on the playfulness of public, political conversations (the ability to be converted to another’s point of view). In the third part, I suggest some grounded metaphors for planetary thinking: wild and slow thinking, elemental and grounded thinking, and creaturely and mycelium thinking. Full article

The preservation of historical heritage requires a deep understanding of the interactions between physical and structural phenomena. This study investigates the influence of bells acoustic waves propagation on the dynamic behavior for the historical bell tower of the San Michele Arcangelo Cathedral in Caserta Vecchia, Italy. By combining environmental acoustic measurements with finite element modeling in ABAQUS, the research analyzes vibroacoustic coupling and identifies vibrational modes affected by the bell sounds. Harmonic analysis reveals the relationships between sound frequencies and structural vibrational modes, providing insights into the dynamics of historic towers subjected to repetitive acoustic loads. The findings demonstrate how sound can induce complex structural responses, offering valuable guidance for targeted conservation strategies. This interdisciplinary approach can be extended to other historic buildings, highlighting the critical role of vibroacoustic considerations in safeguarding cultural heritage. Full article

Australian author Garth Nix has set six critically acclaimed and internationally bestselling novels and several shorter works in and around the fictional world of the Old Kingdom, beginning with Sabriel (1995) and continuing most recently with Terciel & Elinor (2021). This loose series of texts, with its bellringing protagonists, is the prime contributor to his reputation as an author of high fantasy fiction, although he is also marketed as and known for writing science fiction and other related subgenres. Most notably, his work prominently features elements of the Gothic. This aspect of his work and the ways in which it creates tension within the “high” fantasy genre becomes increasingly apparent when examined through the lens of sound—a critical method that has potential for charting the entanglements of this genre with other popular genres of fiction. Full article

This study investigates the acoustic characteristics of the alto saxophone by analyzing the spectral content of sound pressure along its bore and examining the influence of register valves. A detailed in situ analysis is presented of internal sound pressure from the mouthpiece to the bell for notes ranging from D₃ to C#₅, using a thin probe microphone needle in the neck and a movable miniature microphone in the body of the saxophone. The findings reveal that the cut-off frequency for lower notes in the first register is located near the third mode, whereas for higher notes, it shifts closer to the fourth mode. This research investigated previous assumptions that the cut-off frequency lies near the sixth mode, instead demonstrating that it occurs at lower modes depending on the note played. In the second register, the cut-off frequency consistently aligns with the second mode for all notes. The results demonstrate that opening the register tone holes alters the sound pressure level (SPL) distribution and shifts the positions of sound pressure valleys, with the first register valve having a more pronounced effect on SPL and mode shape than the second register valve. For the fourth mode in the first register, the register valves exhibit a stronger influence on SPL distribution compared to mode 2. Full article

Biological systems learn from past experiences by establishing relationships between two simultaneously occurring events, a phenomenon known as associative learning. This concept has promising applications in modern AI (Artificial Intelligence) and ML (Machine Learning). To leverage it effectively, a precise electrical model that can simulate associative learning observed in biological systems is essential. The paper focuses on modeling Pavlov’s famous experiment related to the drooling of dogs at the sound of bell after associating the food with the bell during training. The study addresses limitations in existing circuit designs that fail to accurately replicate associative learning in dogs, particularly when the sequence of food and bell signals deviates from a specific pattern. We propose a novel design using a few CMOS (Complementary Metal Oxide Semiconductor) transistors and memristor models that produces an output corresponding to the dogs drooling only when food and bell signals are associated, mirroring real-life training conditions. The results section first discusses simulations using the standard TiO₂ (Titanium Oxide) memristor model, followed by experimental results obtained from a classical memristor emulator. Both simulation and experimental findings confirm the effectiveness of the circuit designs. Full article

Sound transmission, in the form of the telephone, was invented by Alexander Graham Bell et al. in the seventies of the XIX century. Inspired by this development, Adriano de Paiva published in 1878 the idea of the transmission of images at a distance using electricity and selenium. His proposal was based upon earlier work by Jöns Jacob Berzelius, who identified the selenium element in 1817, and of Willoughby Smith, who in 1873 identified a peculiar property of this material—its conductivity dependence upon incident light. The 1878 paper of Adriano de Paiva is the first publication proposing to benefit from the properties of selenium in order to achieve electrical image transmission at a distance and, in the words of the author, enable ubiquity—the transmission of sound and image anywhere in real time. This encyclopedia entry delves into the early steps of electrical image transmission, concisely presenting the protagonists and controversies of scientific priority, and mentioning the impact of those pioneering contributions, still mentioned today, approximately one and a half centuries later. Full article

Fluorescence imaging has emerged as a powerful tool for detecting surface damage in fruits, yet its application to vegetables such as green bell peppers remains underexplored. This study investigates the fluorescent characteristics of minor mechanical damage, specifically 5 × 5 mm cuts in the exocarp of green bell peppers, which conventional digital imaging techniques fail to classify accurately. Chlorophyll fluorescence imaging was combined with machine learning algorithms—including logistic regression (LR), artificial neural networks (ANN), random forests (RF), k-nearest neighbors (kNN), and the support vector machine (SVM) to classify damaged and sound fruit. The machine learning models demonstrated a high classification accuracy, with calibration and prediction accuracies exceeding 0.86 and 0.96, respectively, across all algorithms. These results underscore the potential of fluorescence imaging as a non-invasive, rapid, and cheaper method for assessing mechanical damage in green bell peppers, offering valuable applications in quality control and postharvest management. Full article

In this research, we discussed the different chaotic phenomena, sensitivity analysis, and bifurcation analysis of the planer dynamical system by considering the Galilean transformation to the Lonngren wave equation (LWE) and the (2 + 1)-dimensional stochastic Nizhnik–Novikov–Veselov System (SNNVS). These two important equations have huge applications in the fields of modern physics, especially in the electric signal in data communication for LWE and the mechanical signal in a tunnel diode for SNNVS. A different chaotic nature with an additional perturbed term was also highlighted. Concerning the theory of the planer dynamical system, the bifurcation analysis incorporating phase portraits of the dynamical systems of the declared equations was performed. Additionally, a sensitivity analysis was used to monitor the sensitivity of the mentioned equations. Also, we extracted new, abundant solitary wave structures with the graphical phenomena of the mentioned nonlinear mathematical models. By conducting an expansion method on the abovementioned equations, we generated three types of soliton structures, which are rational function, trigonometric function, and hyperbolic function. By simulating the 3D, contour, and 2D graphs of these obtained solitons, we scrutinized the behavior of the waves affecting the nonlinear terms. The figures show that the solitary waves obtained from LWE are efficient in analyzing electromagnetic wave signals in the cable lines, and the solitary waves from SNNVS are essential in any stochastic system like a sound wave. Moreover, by taking some values of the parameters, we found some interesting soliton shapes, such as compaction soliton, singular periodic solution, bell-shaped soliton, anti-kink-shaped soliton, one-sided kink-shaped soliton, and some flat kink-shaped solitons, etc. This article will have a great impact on nonlinear science due to the new solitary wave structures with different complex phenomena, sensitivity analysis, and bifurcation analysis. Full article

Preschool years are a highly formative period in a child’s life and present a critical opportunity for the cultivation of enduring healthy eating habits. Trying new vegetables can be a challenge for young children as they can often be wary or even averse to the unfamiliar tastes, textures, smells, sights, and sounds posed by new foods. This study aimed to assess how engaging preschool children in growing food and playing with food influences their vegetable consumption and willingness to try new foods. Intervention studies were conducted with children aged 3–5 years in four Irish preschool classes across three different preschools, with two classes partaking in a vegetable-focused sensory learning intervention (n = 33), and two classes being involved in a gardening-based food education intervention (n = 57). The sensory learning intervention involved playing with three different foods, tomatoes, peas, and bell peppers, with the children’s consumption of these foods measured at baseline and after partaking in two interactive sensory learning classes. The gardening-based intervention centered around watercress and compared the effects of a hands-on planting activity versus a storytelling control activity on preschool children’s perceptions and reactions to tasting watercress. The sensory learning intervention was successful in encouraging preschool children to eat more vegetables, with children consuming on average 85% more peppers (p < 0.001), 24% more peas (p = 0.002), and 17% more tomatoes after the intervention. Children showed a greater willingness to try new foods after experiencing sensory learning, with over 50% of those who refused to try peas and peppers at baseline opting to try the vegetables after the intervention (p < 0.001). Involvement in the hands-on planting activity resulted in a slightly higher willingness to try what was a new vegetable for 79% of children, with 48% of the children in the planting group opting to taste the watercress compared to 32% in the storytelling group. This research indicates that providing preschool children with the opportunity for hands-on interaction with food aids in increasing their vegetable consumption and can make them more receptive to trying new foods. Use of these techniques can help to cultivate positive early food experiences that can have a lasting impact on lifelong food habits. Full article

Religion involves expressing beliefs, performing practices, and obeying norms about what is considered sacred and worthy of worship. While some argue that religion has become irrelevant due to the widespread influence of secularism and scientific reasoning, many still find comfort in the sacred. Scientific research has shown that religion can positively impact health and safety, especially during disasters. Accordingly, religion plays a crucial role in one’s wellbeing. In the Philippines, the sound of church bells calls for parishioners to gather and celebrate, and acts as a warning system for different types of danger, such as earthquakes, typhoons, floods, raids, uprisings, and fires. Filipinos are warned to leave their houses and come to the church to take shelter. Thus, churches have been considered evacuation centers and loci for disaster risk-reduction undertakings. The proponents conducted a qualitative study investigating the disaster risk management strategies developed and implemented by St. Martin of Tours Parish Church in Bocaue, Bulacan, Philippines, during the “Pagoda sa Wawa” fluvial festival, where safety measures and crowd control are essential in maintaining a prayerful and peaceful experience. The objective of the study was to investigate how festival organizers prioritize the safety of devotees after a tragedy occurred 30 years ago, which resulted in the deaths of 266 people. Furthermore, this study explores the precautionary measures taken during and after the COVID-19 pandemic, recognizing devotees’ compliance and resilience for the common good. This study utilized a tripartite method, including reviewing relevant literature, participating in a pagoda fluvial parade, and conducting semi-structured interviews. The results were presented in a format that consisted of context, content, and challenges for the sake of coherence. Full article

Background: Youth with somatic symptom disorder (SSD) present unique behavioral characteristics. Aims: To develop and examine the psychometric properties of an observational measure of behavioral characteristics for youth with SSD (the Somatization Behavioral Characteristics Questionnaire, SBCQ). Methods: N = 80 youth with SSD and 31 with non-SSD impairments participated in this study (age = 13.91 ± 2.72, 14 ± 3.21, respectively; females: n = 61, 14, respectively). Symptom intensity (Children’s Somatization Inventory-24; CSI-24), functional disability (Six-Minute Walk Test, walking rate of perceived exertion), and the SBCQ were assessed. SBCQ reliability and validity were examined. Results: SBCQ had acceptable reliability in both groups (Cronbach’s α > 0.7). Exploratory factor analysis in the SSD group revealed a three-cluster solution. Significant associations were found between the SBCQ, CSI-24, and functional disability. Both groups differed in the prevalence of all SBCQ behaviors. The greatest differences were in the mismatch between etiology and clinical presentation, and in the exhibited lack of trust in the therapist and “la belle indifference”. Receiver operating characteristic analysis showed that the SBCQ has moderate accuracy in discriminating between the two groups (area under the curve = 0.80). Sensitivity and specificity were 82.5% and 73.3%, respectively. Conclusions: The SBCQ is psychometrically sound. Findings may aid in developing sensitive assessment tools for SSD and continuing education for therapists. Full article

Zen practice is often associated with aloof silence and introspection. However, any visitor to a Japanese Zen training temple will be surprised by the abundance and richness of the acoustic environment. In effect, every moment of the training schedule is accompanied, chronicled, and choreographed by percussions and chanting vocals. This paper will introduce this sonic environment and explain how different sounds construct the training experience. In particular, I will focus on sound instruments that coordinate daily activities, such as bells, gongs, drums, and the like, arguing that they are essential to Zen practice. The first part of the paper explains the unique characteristics of a Japanese Zen training temple, focusing on ritual sound instruments and their place within the monastic soundspace. The second part examines the meaning of these instruments as described in Zen canonical writing, focusing mainly on Baizang’s monastic regulation and different references to it by Japanese masters throughout history. The third part explores how contemporary monastics understand sound instruments and their function in regulating the body, conveying values, and evoking spiritual transformation. Full article

Geoelectrical resistivity measurements were conducted in five locations within the eastern portion of the Dahomey basin for the purpose of subsurface evaluation and detecting saturated zones. The locations are Covenant University (L1), Bells University (L2), Oju-Ore-Ilogbo Road (L3), Obasanjo-Ijagba Road (L4), and Iyana Iyesi (L5). The study was carried out to avert the common challenges of drilling low-yield groundwater boreholes in the area. A total of 30 Vertical Electrical Soundings (VES) and five two-dimensional Electrical Resistivity Tomography (ERT) data sets have been acquired along the study areas. The geoelectrical resistivity results were integrated with the borehole logs to generate the spatial distribution of the subsurface lithologies in the area. The delineated subsurface lithologies include the topsoil (lateritic clay), clayey sand, sandy clay, fine silty sand, coarse sand, and shale/clay units. The fine silty sand and coarse sand units were identified as the two main aquifer units within the area. The depths to the upper aquifer unit in the area include 31.7–96.7 m, 38.5–94.0 m, 30.7–57.5 m, 39.1–63.4 m, and 46.9–57.5 m for locations L1, L2, L3, L4, and L5, respectively. At the same time, the depths to the lower aquifer unit in the area include 43.4–112.7 m, 52.2–108.0 m, 44.2–72.5 m, 53.7–78.5 m, and 63.5–72.9 m for locations L1, L2, L3, L4, and L5, respectively. The estimated hydraulic parameters for both aquifers show they are highly productive with mean porosity, mean hydraulic conductivity, and mean transmissivity of 20–22%, 12.4–17.0 × 10⁻² m/s, 1.56–2.18 m²/s for the upper aquifer, and 48–50%, 371–478 × 10⁻² m/s, 50.00–62.14 m²/s for the lower aquifer. By focusing on these aquifer systems during exploration, sustainable groundwater resources can be secured, providing relief to homeowners within the study area who might otherwise face the frustration of drilling unproductive and low-yield boreholes. However, it is crucial to consider the presence of sub-vertical faults in the study area, as these faults can significantly impact groundwater development and management. These sub-vertical structural faults may lead to changes in the permeability, hydraulic conductivity, and transmissivity of the delineated aquifers, affecting their productivity across the divide and ultimately influencing the overall water availability in the area. Careful consideration of these geological factors is essential for effective aquifer management and sustainable groundwater utilisation. Full article

Bells are made of bronze, an alloy of copper and tin. Art objects and musical instruments belong to tangible and intangible heritage. The effect of atmospheric alteration on their sound is not well documented. To address this question, alteration cycles of bronze specimens are performed in a chamber reproducing a realistic polluted coastal atmosphere. The corrosion layers are characterized by X-ray diffraction, electron microscopy and X-ray photoelectron spectrometry. The buried interface of the film (alloy-layer interface) is formed by a thin, adherent and micro-cracked layer, mainly composed of sulfates, copper oxide and chloride, on top of tin corrosion products. Near the atmosphere-film interface, less adherent irregular clusters of soot, calcite, gypsum and halite developed. Through these observations, an alteration scenario is proposed. To correlate the bronze corrosion effect on the bell sound, linear and nonlinear resonance experiments are performed on the corroded bronze specimens, where resonance parameters are monitored as a function of increasing driving force using a shaker. Results show that the corrosion effect on the acoustic properties can be monitored through the evolution of the acoustic nonlinear parameters (damping and resonance). These well-calibrated original experiments confirm the effect of corrosion on the acoustic properties of bronze. Full article

Religious practice in Serbia has taken place using both indoors and outdoors sacred sites ever since the adoption of Christianity in medieval times. However, previous archaeoacoustic research was focused on historic church acoustics, excluding the open-air soundscapes of sacred sites. The goal of this review paper is to shed light on the varieties of sacred soundscapes that have supported the various needs of Orthodox Christian practice in medieval Serbia. First, in relation to the acoustic requirements of the religious service, we compare the acoustic properties of masonry and wooden churches based on the published archaeoacoustic studies of medieval churches and musicological studies of the medieval art of chanting. Second, we provide an overview of the ethnological and historical studies that address the outdoor sacred soundscapes and investigate the religious sound markers of large percussion instruments, such as bells and semantra, the open-air litany procession that has been practiced during the annual celebration of a patron saint’s day in rural areas, and the medieval assemblies that took place on the sacred sites. This paper finally points out that the archaeoacoustic studies of sacred soundscapes should not be limited to church acoustics but also include open-air sacred sites to provide a complete analysis of the aural environment of religious practice and thus contribute to understanding the acoustic intention of medieval builders, as well as the aural experience of both clergy and laity. Full article