Search Results (105)

In recent years, there has been a growing interest in the frictional anisotropy of snake scale-inspired surfaces, especially its potential applications in enhancing the bearing capacity of foundations (piles, anchor elements, and suction caissons) and reducing materials consumption and installation energy. This study first investigated the frictional properties and surface morphologies of the ventral scales of Cantor’s rat snakes (Ptyas dhumnades). Based on the findings on the snake scales, a novel snakeskin-inspired geosynthetic reinforcement (SIGR) is developed using 3D-printed polylactic acid (PLA). A series of pullout tests under different normal loads (25 kPa, 50 kPa, and 75 kPa) were performed to analyze the pullout behavior of SIGR in sandy soil. Soil deformation and shear band thickness were measured using Particle Image Velocimetry (PIV). The results revealed that the ventral scales of Ptyas dhumnades have distinct thorn-like micro-protrusions pointing towards the tail, which exhibit frictional anisotropy. A SIGR with a unilateral (one-sided) layout scales (each scale 1 mm in height and 12 mm in length) could increase the peak pullout force relative to a smooth-surface reinforcement by 29% to 67%. Moreover, the peak pullout force in the cranial direction (soil moving against the scales) was found to be 13% to 20% greater than that in the caudal direction (soil moving along the scales). The pullout resistance, cohesion, and friction angle of SIGR all showed significant anisotropy. The soil deformation around the SIGR during pullout was more pronounced than that observed with smooth-surface reinforcement, which suggests that SIGR can mobilize a larger volume of soil to resist external loads. This study demonstrates that SIGR is able to enhance the pullout resistance of reinforcements, thereby improving the stability of reinforced soil structures, reducing materials and energy consumption, and is important for the sustainability of geotechnical engineering. Full article

This paper proposes a flattened power electronic design approach to enhance both power density and thermal management performance. As essential components in electrified energy conversion, evaluations of power converters are strongly based on their power density. Achieving a compact design typically requires a well-optimized printed circuit board (PCB) layout, optimal component design and selection, and an efficient thermal management system. During high-power operation, significant power losses can lead to substantial heat generation. Without effective thermal mitigation, this heat buildup may result in excessive temperature rises or even system failure. To address this challenge, this paper developed a flattened power converter design methodology to increase the effective heat-dissipation area without expanding the total volume consumption. This proposed design improves thermal performance and, in turn, enhances overall power density. A three-phase inverter prototype is developed and tested to demonstrate the effectiveness of the proposed method. Full article

This study investigated how the front-page designs of digital newspapers differ based on institutional origin—comparing platforms that were born-digital with those that have transitioned from print—focusing specifically on their appeal to Generation Z audiences. Grounded in Media Richness Theory, this research employed a mixed-methods approach that combined a quantitative visual content analysis with qualitative semi-structured interviews. In the quantitative phase, the front pages of ten Saudi digital newspapers (five digital-native and five digital-migrant) were systematically analyzed to identify differences in their layouts, typography, multimedia usage, and interactivity. The qualitative phase then explored Generation Z users’ perceptions of the design clarity, visual engagement, and interactive affordances, as well as their suggestions for improving interface usability. The results indicate that digital-native newspapers more closely adhere to contemporary digital design standards and demonstrate significantly higher levels of media richness. This study contributes to digital journalism scholarship by offering both theoretical insights into interface-centered richness and practical design recommendations for enhancing user experience and engagement among younger audiences. Full article

The expected outstanding performance of GaN-based transistors in power applications, characterized by high switching frequency, efficiency, and compactness, requires that the design rules of converter layout optimization, filtering, and shielding need to be reexamined. Addressing the above topics, this paper reviews commercial GaN power transistors and specifies their integration techniques, including printed circuit board (PCB) embedded solutions. Then, referring to the optimization results of a half-bridge inverter leg, design techniques are presented that reduce the harmful effect of inductive and capacitive internal converter couplings, thus mitigating the electromagnetic interference (EMI) conducted emissions. Full article

In late imperial China, a type of painting known as “panoramic maps” (shengjing tu 聖境圖, literally “sacred realm maps”) depicted Buddhist sacred sites. Often surviving as woodblock prints, examples from Mount Wutai and Mount Putuo are particularly representative. Previous research has often viewed these images as pilgrimage guides or focused on the relationship between pictorial perspectives and actual geography. This study centers on panoramic maps of Mount Wutai and Mount Putuo, examining both vertical and horizontal layouts, to offer a preliminary understanding of this genre. This study argues that: (1) Unlike urban maps, panoramic maps emphasize significant monasteries and landscape features, incorporating local legends and historical narratives, thus possessing strong narrative qualities. (2) These images likely functioned as pilgrimage souvenirs. Diverging from practical roadmaps, their primary goal was not strict realism but rather to convey the site’s sacredness and associated information through landscape painting conventions, allowing viewers to perceive its sacredness. (3) The woodblock print medium facilitated affordable reproduction, accelerating the circulation of the sacred site’s significance among the populace and aiding in its promotion. This research contends that the panoramic maps primarily function as folk landscape paintings reflecting the sacred site, capable only of approximating the relative positions of features. The widespread adoption of late-period woodblock printing enabled the low-cost reproduction and dissemination of the sacredness inherent in these Buddhist landscapes, constructing idealized spatial representations shaped by religious belief and geomantic principles. Full article

Background/Objectives: Existing patient information leaflets (ePILs), mandated by the FDA to accompany new prescriptions, are difficult to read and understand due to their complexity and poor visual design, especially for populations with low health literacy and low English proficiency. In this study, we developed infographic-based PILs (iPILs) with a concise question-and-answer format, emphasizing essential information, as specified by the FDA. This study compared iPILs and ePILs using the 5C factors: comprehension, cosmetics, convenience, content, and credibility, as perceived by English-speaking and Spanish-speaking populations. Methods: This multicenter, experimental survey study assessed the 5C factors. English and Spanish-speaking adults on ≥1 chronic medication were recruited from community pharmacies in California (CA) and Illinois (IL). They were stratified to review either an ePIL or an iPIL for one of four common medications. They completed a Medication Knowledge Quiz (MKQ) to show their comprehension using six open-ended questions. Subsequently, they received both PIL versions and answered preference questions about the 4C and media format and, lastly, about demographic and health literacy questions. Results: A total of 235 participants completed the surveys at three sites (CA-English, CA-Spanish, and IL-English), with differing participant characteristics. The CA-Spanish participants scored the lowest on health literacy and the number of health conditions. The MKQ scores for those using the iPILs were significantly higher than for those using the ePILs across all groups. They significantly correlated with health literacy results for the ePILs (r = 0.394, p < 0.001). The participants preferred the iPILs over the ePILs for four of the C factors, barring one content question. Regardless of age, printed formats were preferred (64.7%)—alone or with digital formats (21.3%)—over digital formats alone (3.4%). Overall, 79.1% of the participants preferred iPILs, 11.9% preferred ePILs, and 8.9% preferred either version. Conclusions: The infographic-based patient information leaflets (iPILs) were easier to read, navigate, and understand, making them more accessible to individuals with varying levels of health literacy. Infographic-based leaflets outperformed existing ones in user comprehension and were preferred due to their simple layout, ease of navigation, and helpfulness. Full article

This paper investigates how the layout strategies of Xuanying’s Yiqiejing yinyi (mid-7th c.), the earliest surviving Chinese Buddhist glossary, evolved across manuscripts, Buddhist Canon editions, and Qing-era scholarly reprints from the 7th to 19th centuries. While Xuanying’s work serves as the central case due to its breadth of preservation and representativeness, this study also references Huiyuan’s glossary (early-8th c.) to highlight broader patterns of reception and adaptation, particularly in late imperial China. Through a usability–production efficiency framework, the study identifies a continuum from the flexible manuscript layouts to the standardized double-line format used in Buddhist woodblock printing, and later to Qing-era adaptations that integrated Buddhist glossaries into evidential studies. It argues that layout decisions were influenced not merely by practical considerations of use and production but also by changing conceptions of textual function and authority. It also highlights the unintended effects of layout standardization, which at times introduced new interpretive complexities. By demonstrating how layout actively influenced the reproduction and reception of Buddhist glossaries, this study offers a new perspective on the intersection of materiality, textual transmission, and reading practices in pre-modern China. Full article

The gap between the ever-shrinking feature size of integrated circuits and lithographic manufacturing ability is causing unwanted shape deformations of printed layout patterns. The deformation region with problematic imaging, known as a hotspot (HS), should be detected and corrected before mask manufacturing. In this paper, we propose a hotspot detection method to improve the precision and recall rate of the fatal pinching and bridging error due to the poor printability of certain layout patterns by embedding a spatial attention mechanism into the YOLOv5 model. Additionally, transfer learning and pre-trained techniques are used to expedite training convergence. Simulation results outperform the depth-based or representative machine learning-based methods on the ICCAD 2012 dataset with an average recall rate of 1, a precision rate of $0.8277$ and an F1-score of $0.9057$. Full article

In previous studies, a valveless piezoelectric pump with arc-shaped tubes (VPPAST) based on the Coriolis Effect was proposed. To promote the application of VPPAST in the field of navigation and guidance, it is vital to further explore the influences of the layout and structural parameters of arc-shaped tubes on the flow rate. Accordingly, in this study, the analysis of flow characteristics of fluid in arc-shaped tubes was conducted, and the velocity difference between the clockwise and counterclockwise flow of the liquid was reduced. Eventually, the flow equations of three layout modes of arc-shaped tubes were established. VPPAST with anomalous-direction arc-shaped tubes, single-arc-shaped tube, and same-direction arc-shaped tubes were produced using 3D printing technology. In addition, the valveless piezoelectric pump with the anomalous-direction arc-shaped tubes (VLPPADA) with different parameter flow tubes were also fabricated. Based on the resultant flow rates of each piezoelectric pump, it was demonstrated that the flow rate of the VLPPADA was the highest under the same driving conditions, and the flow rate can be determined as 1.72 mL/min when the driving voltage was set as 160 V at 14 Hz. It indicated that the pump flow rate of VLPPADA was directly proportional to the base radius and width of the arc-shaped tube. Full article

Private gardens during the Song Dynasty are an important component of classical Chinese garden design. However, existing research predominantly focuses on architectural forms and construction techniques, with insufficient systematic exploration of the overall spatial layout, the typological evolution of garden architecture, and the underlying driving forces behind these changes. Based on the 400 private garden records from the Complete Collection of Song, Song-era notes, poems, and paintings, this study employs methods from cliometrics and iconology to quantitatively analyse historical materials to systematically trace the evolution of spatial layouts, architectural types, architectural construction, and interior furnishings in Song private gardens while delving into the causes of these changes. The findings reveal a significant increase in the application of “elevated and terraced layouts” in Southern Song private gardens. The rise of unique architectural types, such as boat-shaped buildings, academies, and high buildings with a collection of books, is closely tied to the scholar-official culture, advancements in printing technology, the influence of Neo-Confucianism, and government support for private education. Southern Song architectural techniques saw significant advancements in response to climatic changes, featuring diversified roof forms, upturned eaves, detachable doors and windows, and elevated platforms. The invention of modular furniture, such as the Yanji table, exemplifies the ingenuity of Song designers in adapting to shrinking living spaces. This paper is the first to systematically reveal the evolution of private garden architecture in the Song Dynasty, particularly the emergence of unique architectural types. It offers a new perspective for understanding the influences of society, culture, and environment on landscape architecture in the Song Dynasty, providing valuable historical insights for the study of Ming–Qing garden architecture and contemporary landscape design practices. Full article

The digitalization of historical documents is of interest for many reasons, including historical preservation, accessibility, and searchability. One of the main challenges with the digitization of old newspapers involves complex layout analysis, where the content types of the document must be determined. In this context, this paper presents an evaluation of the most recent YOLO methods for the analysis of historical document layouts. Initially, a new dataset called BHN was created and made available, standing out as the first dataset of historical Brazilian newspapers for layout detection. The experiments were held using the YOLOv8, YOLOv9, YOLOv10, and YOLOv11 architectures. For training, validation, and testing of the models, the following historical newspaper datasets were combined: BHN, GBN, and Printed BlaLet GT. Recall, precision, and mean average precision (mAP) were used to evaluate the performance of the models. The results indicate that the best performer was YOLOv8, with a ${\mathbf{Recall}}_{\mathbf{test}}$ of $\mathbf{81}\%$ and an ${\mathbf{mAP}}_{\mathbf{test}}$ of $\mathbf{89}\%$. This paper provides insights on the advantages of these models in historical document layout detection and also promotes improvement of document image conversion into editable and accessible formats. Full article

This study aims to enhance the visual design of ABC.com, a leading Indonesian online news portal, by using usability and eye-tracking methods. As news media transitions from print to digital, maintaining an optimal user experience is crucial. This study addresses design deficiencies on ABC.com, particularly related to news accessibility, search functionality, and the impact of advertisements. This research employs questionnaires and eye-tracking technology to identify user behavior and validate the findings. Key usability aspects, such as content accessibility, error prevention, and visual appeal, are analyzed to improve the website’s layout. The eye-tracking results reveal that users focus mainly on the center of the screen, often missing critical elements like the latest news and the search engine. This study proposes enhancements in typography, contrast, and page layout, based on the identified needs. The final design of ABC.com improved by enhancing efficiency, clarity, aesthetics, readability, and user comfort. The redesign showed mean improvements of 0.16, 0.41, 0.65, 0.32, and 0.54 in these criteria, respectively, indicating a notable enhancement in usability. This study’s findings offer a practical guideline that can be directly applied to enhance similar online news platforms in Indonesia. Full article

In additive manufacturing, particularly with Laser–Powder-Bed Fusion (L-PBF), augmenting recycled powder with virgin powder is common to extend lifespan. This practice complicates tracking recycling cycles, as parts consist of layers from both virgin and recycled powders. The virgin-to-recycled powder ratio significantly influences material properties, though limited research has explored the complexities of combining powders of varying qualities. In this study, we investigate how different ratios of virgin and recycled powders, along with leftover powder in the feed chamber, affect these properties. Using maraging steel powder, the virgin-to-recycled ratios were varied, examining impacts on powder characteristics and printed part quality. Leftover powder was analyzed for changes due to laser spatter and high temperatures, focusing on particle size and agglomeration. The results showed that exposure to laser spatter and heat increased particle size and agglomeration. Higher proportions of sieved powder resulted in larger particle sizes, while densely packed layouts led to oversized agglomerates due to concentrated laser exposure. Although mechanical properties remained stable, tensile strength was higher in parts made from virgin powder, negatively correlating with the reused powder content. Optimizing the virgin-to-recycled powder ratio can enhance sustainability in additive manufacturing without significantly degrading mechanical properties, offering insights critical for refining powder reuse strategies. Full article

With rapid global urbanization and economic development, 3D concrete printing (3DCP) technology has emerged as an innovative construction method, garnering increasing attention and application. Compared to traditional construction techniques, 3DCP not only reduces resource waste and carbon emissions during the building process but also significantly enhances construction efficiency, demonstrating considerable potential in the construction industry. As 3DCP advances from theoretical studies to real-world applications, providing stable and reliable structural reinforcement solutions becomes essential. This paper focuses on examining various methods to improve the performance of 3D-printed concrete (3DPC) structures. The analysis shows that reinforcement using steel bars, in combination with other materials (mainly fibers and nanomaterials), remains a key strategy for structural enhancement. By integrating diverse reinforcement methods, this study proposes an innovative bidirectional steel mesh layout scheme. Additionally, given the unique nature of 3DPC construction, a critical review of various methods for improving interface bonding strength is included. These findings aim to guide the engineering community in selecting suitable reinforcement solutions for 3DPC. Full article

Cardiac mapping is a crucial procedure for diagnosing and treating cardiac arrhythmias. Still, current clinical techniques face limitations including insufficient electrode coverage, poor conformability to complex heart chamber geometries, and high costs. This study explores the design, testing, and validation of a 64-electrode soft robotic catheter that addresses these challenges in cardiac mapping. A dual-layer flexible printed circuit board (PCB) was designed and integrated with sensors into a soft robotic sensor array (SRSA) assembly. Design considerations included flex PCB layout, routing, integration, conformity to heart chambers, sensor placement, and catheter durability. Rigorous SRSA in vitro testing evaluated the burst/leakage pressure, block force for electrode contact, mechanical integrity, and environmental resilience. For in vivo validation, a porcine model was used to demonstrate the successful deployment, conformability, and acquisition of electrograms in both the ventricles and atria. This catheter-deployable SRSA represents a meaningful step towards translating the integration of soft robotic actuators and stretchable electronics for clinical use, showcasing the unique mechanical and electrical performance that these designs enable. The high-density electrode array enabled rapid 2 s data acquisition with detailed spatial and temporal resolution, as illustrated by the clear and consistent cardiac signals recorded across all electrodes. The future of this work will lie in enabling high-density, anatomically conformable devices for detailed cardiac mapping to guide ablation therapy and other interventions. Full article