Search Results (23)

Accurate skin lesion classification is crucial for the early detection of malignant lesions, including melanoma, as well as improved patient outcomes. While convolutional neural networks (CNNs) excel at capturing local morphological features, they struggle with global context modeling essential for comprehensive lesion assessment. Vision transformers address this limitation but suffer from quadratic computational complexity O(n²), hindering deployment in resource-constrained clinical environments. We propose DermaMamba, a novel dual-branch fusion architecture that integrates CNN-based local feature extraction with Vision Mamba (VMamba) for efficient global context modeling with linear complexity O(n). Our approach introduces a state space fusion mechanism with adaptive weighting that dynamically balances local and global features based on lesion characteristics. We incorporate medical domain knowledge through multi-directional scanning strategies and ABCDE (Asymmetry, Border irregularity, Color variation, Diameter, Evolution) rule feature integration. Extensive experiments on the ISIC dataset show that DermaMamba achieves 92.1% accuracy, 91.7% precision, 91.3% recall, and 91.5% mac-F1 score, which outperforms the best baseline by 2.0% accuracy with 2.3× inference speedup and 40% memory reduction. The improvements are statistically significant based on a significance test (p < 0.001, Cohen’s d > 0.8), with greater than 79% confidence also preserved on challenging boundary cases. These results establish DermaMamba as an effective solution bridging diagnostic accuracy and computational efficiency for clinical deployment. Full article

This study examines two proximate yet theologically and spatially disparate religious spaces in Seoul: the Jeoldusan Martyrs’ Shrine (Korean: 절두산 순교 성지; hereafter “Jeoldusan Martyrs’ Shrine”) and the Yanghwajin Protestant Cemetery (Korean: 양화진 묘원; hereafter “Yanghwajin Cemetery”). We propose the concept of isomorphic heterotopias and discuss the logic of intersecting memories. Drawing on Foucault’s concept of heterotopia and cultural memory theory, the study finds that the Jeoldusan Martyrs’ Shrine, through architectural enclosure, the exhibition of relics, and pilgrimage rituals, foregrounds the vertical redemption of martyrs’ flesh and faith, reinforcing ecclesiastical discourse and collective salvation narratives. In contrast, at Yanghwajin Cemetery, through dispersed tombstone layouts, egalitarian epitaph inscriptions, and public commemorative activities, the study finds that the site presents the dialectic of the martyr spirit within a secular spiritual space and individual testimonies. Despite their spatial heterogeneity, their geographic proximity generates a dialogical memory field: the vertical sacrality of the shrine is refracted through the cemetery’s horizontality, while the cemetery’s public spirit resonates with the shrine’s liturgical framework. This dialogical memory field, shaped by shared physical environments and common public narrative platforms—generates a long-term coexistence without convergence, producing a spatial relationship of “non-integrative entanglement” born of antagonism. At the same time, these sites are not isolated spatial fragments; rather, through urban governance, they are woven into the same memory politics network, forming an “isomorphic heterotopia.” Through politically inflected discursive narratives, both sites facilitate multidirectional flows of memory, preserving their respective “canons” while re-contextualizing each other within the same urban memory network. In doing so, they engage in an ongoing process of mutual rereading and co-construction, producing a re-contextualization of spatial memory and shaping a “composite historical sensibility” that, in turn, contributes to the city’s character. Full article

This article examines how gender shapes Holocaust memory through close analyses of two canonical women’s memoirs: Charlotte Delbo’s Auschwitz and After and Ruth Klüger’s Still Alive (2001), a considerably rewritten and culturally reinterpreted version of her earlier German book Weiter leben (1992). Delbo, a French political deportee, and Klüger, an Austrian Jewish survivor, provide testimonies that challenge the male-centered paradigms that have long dominated the Holocaust literature. Although pioneering feminist scholars have shown that women experienced and remembered the Holocaust differently, gender-based analysis remains underused—not only in Holocaust studies but also in broader memory studies, where it is often assumed to be already complete or exhausted. This view of theoretical saturation reflects a Eurocentric bias that equates critical maturity with Western academic prominence, thereby masking the ongoing influence of gender on the production, circulation, and reception of testimony worldwide. Drawing on trauma theory, concepts of multidirectional memory and postmemory, systems theory of media, and ethical approaches to testimony, this article argues that gender is not merely descriptive of Holocaust experience but also constitutive of how trauma is narrated, circulated, and archived. Testimony, as a cultural form, is inherently mediated, and that mediation is fundamentally gendered. This analysis illustrates how Delbo and Klüger create gendered testimonial forms through unique aesthetic strategies. Delbo’s writing focuses on seeing by invoking a feminist aesthetics of voir as imagined and ethical visualization, while Klüger’s narrative emphasizes voice, utilizing rhetorical sharpness and ambivalent narration to challenge postwar silencing. Instead of equating gender with femininity, the article understands gender as a relational and intersectional system—one that includes masculinity, non-binary identities, and structural power differences. It also questions Eurocentric assumptions that feminist critique has been fully explored within memory studies, urging renewed engagement with gender in transnational contexts, such as the often-overlooked testimonies from wartime Shanghai. Ultimately, this article argues that feminist approaches to Holocaust testimony expose the gendered structures of grievability that determine which kinds of suffering are preserved—and which remain unspoken. Full article

Addressing the urgent need for lightweight and reusable energy-absorbing materials in aviation impact resistance, this study introduces an innovative multi-directional braided metamaterial design enabled by 4D printing technology. This approach overcomes the dual challenges of intricate manufacturing processes and the limited functionality inherent to traditional textile preforms. Six distinct braided structural units (types 1–6) were devised based on periodic trigonometric functions (Y = A sin(12πX)), and integrated with shape memory polylactic acid (SMP-PLA), thereby achieving a synergistic combination of topological architecture and adaptive response characteristics. Compression tests reveal that reducing strip density to 50–25% (as in types 1–3) markedly enhances energy absorption performance, achieving a maximum specific energy absorption of 3.3 J/g. Three-point bending tests further demonstrate that the yarn amplitude parameter A is inversely correlated with load-bearing capacity; for instance, the type 1 structure (A = 3) withstands a maximum load stress of 8 MPa, representing a 100% increase compared to the type 2 structure (A = 4.5). A multi-branch viscoelastic constitutive model elucidates the temperature-dependent stress relaxation behavior during the glass–rubber phase transition and clarifies the relaxation time conversion mechanism governed by the Williams–Landel–Ferry (WLF) and Arrhenius equations. Experimental results further confirm the shape memory effect, with the type 3 structure fully recovering its original shape within 3 s under thermal stimulation at 80 °C, thus addressing the non-reusability issue of conventional energy-absorbing structures. This work establishes a new paradigm for the design of impact-resistant aviation components, particularly in the context of anti-collision structures and reusable energy absorption systems for eVTOL aircraft. Future research should further investigate the regulation of multi-stimulus response behaviors and microstructural optimization to advance the engineering application of smart textile metamaterials in aviation protection systems. Full article

While national museums focus on broader national narratives, regional museums function as vital community hubs, establishing deeper local connections and facilitating intimate interactions between local residents and their heritage. These regional museums face dual challenges in their sustainable digital transformation, including the following: technical barriers arising from the high costs of traditional digitization methods like Terrestrial Laser Scanning (TLS) and humanistic challenges, including preserving distinctive multi-directional communication and balancing professionalism and authority with collaborative community engagement in the digitization process. This study addresses these challenges through a case study of the Ryushi Memorial Museum in Ota City, Tokyo. We present a comprehensive approach that integrates technical innovation with community engagement, including the following: (1) A cost-effective workflow combining photogrammetry with iPad LiDAR technology for spatial reconstruction, demonstrated through the digital reconstruction of the museum’s Atelier and Jibutsudo (family hall for worshipping Buddha); (2) a new Exhibition Co-Design framework that co-ordinates diverse stakeholders to create digital exhibitions while balancing professional guidance with community participation. Through questionnaire surveys and semi-structured interviews with museum volunteers, we demonstrate how this approach enhances community engagement by enabling volunteers to incorporate their local knowledge into digital exhibitions while maintaining professionalism and authority. This cost-effective model for spatial reconstruction and community-driven digital design can serve as a reference for other regional museums to help them achieve sustainable digital innovation in the digital age. Full article

Background/Objectives: Among the neuropsychiatric symptoms of long COVID, the following may be listed: sleep disturbances, headaches, anxiety, depression, dizziness, numbness, memory loss, and concentration difficulties. Various therapies have been implemented to mitigate these symptoms; however, health resort treatments that utilize a wide range of modalities stimulating multidirectional biological reactions may also be effective. The aim of this study was to assess the severity of neuropsychiatric symptoms in long COVID patients who qualified for health resort treatment, evaluate the effectiveness of health resort treatment in this group of patients, and evaluate the effect of balneological factors in the treatment course. Methods: A retrospective analysis of the medical records of 120 people with long COVID (69 women and 51 men) aged 42–79 who underwent health resort treatment in 2021 was performed. People were eligible for treatment at a lowland health resort based on a valid referral from a doctor. The treatment included balneological therapies, physical medicine modalities, exercise programs, health education, and psychological support. Patients assessed the severity of persistent neuropsychiatric symptoms on a 0–10 point scale before and after treatment. Results: After the treatment, the greatest improvement was noted in sleep disorders (2.47 ± 2.23 points vs. 0.86 ± 1.25 points, p < 0.00001) and dizziness (1.39 ± 1.94 points vs. 0.34 ± 0.76 points, p < 0.00001). The lowest improvement was observed in memory disorders (2.68 ± 2.5 points vs. 1 ± 1.4 points, p < 0.00001). Conclusions: Patients with long COVID who qualified for health resort treatment reported mild neuropsychiatric symptoms. Health resort treatment mitigates neuropsychiatric symptoms, as it is a complex approach. Treatment that includes balneological factors improves symptoms to a greater extent. This method of treatment should be integrated into the standard treatment for long COVID. Full article

Carvone, a natural monoterpene, has been identified in various plants, giving them a characteristic scent. Enantiomers (R-(–) and S-(+)) reveal specific biological activities that are successfully used in traditional medicine for their antifungal, antibacterial, antiparasitic, and anti-influenza properties. The presented paper is based on S-(+)-carvone, characterized by a specific caraway scent, which revealed rich biological activities both in vitro and in vivo. Thus, the aim of the study was to evaluate the potential anti-neurodegenerative activity of S-(+)-carvone, including in vitro experiments (butyrylcholinesterase inhibitory, neuro- and hepatotoxicity as well as neuro- and hepatoprotective activity), in vivo (memory acquisition, locomotor activity), and ex vivo (determination of S-(+)-carvone’s level in tissues collected from mice). Results revealed the multidirectional character of S-(+)-carvone. It has been shown that S-(+)-carvone is capable of butyrylcholinesterase inhibition (40% for 0.025 mg applied onto the plate), and neuroprotection and hepatoprotection at selective concentrations against reactive oxygen species generation and lipid peroxidation along with non-hepatotoxicity character. Additionally, multiple-dose administration of the monoterpene at a dose of 100 mg/kg had a positive influence on memory acquisition. Gas chromatography–mass spectrometry analysis of the plasma and the brain showed that S-(+)-carvone can cross the blood–brain barrier and accumulate in the hippocampus (0.217 µg/mg of tissue), a crucial part of the brain associated with cognition and mental functions. Full article

In mineral, environmental, and engineering explorations, we frequently encounter geological bodies with varied sizes, depths, and conductivity contrasts with surround rocks and try to interpret them with single survey data. The conventional three-dimensional (3-D) inversions significantly rely on the size of the grids, which should be smaller than the smallest geological target to achieve a good recovery to anomalous electric conductivity. However, this will create a large amount of unknowns to be solved and cost significant time and memory. In this paper, we present a multi-scale (MS) stochastic inversion scheme based on shearlet transform for airborne electromagnetic (AEM) data. The shearlet possesses the features of multi-direction and multi-scale, allowing it to effectively characterize the underground conductivity distribution in the transformed domain. To address the practical implementation of the method, we use a compressed sensing method in the forward modeling and sensitivity calculation, and employ a preconditioner that accounts for both the sampling rate and gradient noise to achieve a fast stochastic 3-D inversion. By gradually updating the coefficients from the coarse to fine scales, we obtain the multi-scale information on the underground electric conductivity. The synthetic data inversion shows that the proposed MS method can better recover multiple geological bodies with different sizes and depths with less time consumption. Finally, we conduct 3-D inversions of a field dataset acquired from Byneset, Norway. The results show very good agreement with the geological information. Full article

Understanding road conditions is essential for implementing effective road safety measures and driving solutions. Road situations encompass the day-to-day conditions of roads, including the presence of vehicles and pedestrians. Surveillance cameras strategically placed along streets have been instrumental in monitoring road situations and providing valuable information on pedestrians, moving vehicles, and objects within road environments. However, these video data and information are stored in large volumes, making analysis tedious and time-consuming. Deep learning models are increasingly utilized to monitor vehicles and identify and evaluate road and driving comfort situations. However, the current neural network model requires the recognition of situations using time-series video data. In this paper, we introduced a multi-directional detection model for road situations to uphold high accuracy. Deep learning methods often integrate long short-term memory (LSTM) into long-term recurrent network architectures. This approach effectively combines recurrent neural networks to capture temporal dependencies and convolutional neural networks (CNNs) to extract features from extensive video data. In our proposed method, we form a multi-directional long-term recurrent convolutional network approach with two groups equipped with CNN and two layers of LSTM. Additionally, we compare road situation recognition using convolutional neural networks, long short-term networks, and long-term recurrent convolutional networks. The paper presents a method for detecting and recognizing multi-directional road contexts using a modified LRCN. After balancing the dataset through data augmentation, the number of video files increased, resulting in our model achieving 91% accuracy, a significant improvement from the original dataset. Full article

A significant challenge encountered in mmWave and sub-terahertz systems used in 5G and the upcoming 6G networks is the rapid fluctuation in signal quality across various beam directions. Extremely high-frequency waves are highly vulnerable to obstruction, making even slight adjustments in device orientation or the presence of blockers capable of causing substantial fluctuations in link quality along a designated path. This issue poses a major obstacle because numerous applications with low-latency requirements necessitate the precise forecasting of network quality from many directions and cells. The method proposed in this research demonstrates an avant-garde approach for assessing the quality of multi-directional connections in mmWave systems by utilizing the Liquid Time-Constant network (LTC) instead of the conventionally used Long Short-Term Memory (LSTM) technique. The method’s validity was tested through an optimistic simulation involving monitoring multi-cell connections at 28 GHz in a scenario where humans and various obstructions were moving arbitrarily. The results with LTC are significantly better than those obtained by conventional approaches such as LSTM. The latter resulted in a test Root Mean Squared Error (RMSE) of 3.44 dB, while the former, 0.25 dB, demonstrating a 13-fold improvement. For better interpretability and to illustrate the complexity of prediction, an approximate mathematical expression is also fitted to the simulated signal data using Symbolic Regression. Full article

Representations of adoptions tend to concentrate on normatively conceived forms of identity, which prioritize the genetic lineage of adoptees. In contrast, scholarship on autobiographical writing emphasizes that identities are not fixed but are always in process and intersectional because they are formed in within inequal power relations. Kay’s experimental, autobiographical narrative Red Dust Road (2010) tackles the themes of adoption, the search for close relatives, and reunion. Many scholars of her autobiographical writings describe the fluidity of the diasporic adoptee identities created by her. My aim is more specific: I examine what I call Kay’s continuously mobile, processual identity construction as a transracial adoptee in Red Dust Road. I argue that her identity formation, which is also intersectional, is interconnected with her multidirectional networks of attachments and the experimental form of her adoption narrative. In addition to an intersectional approach and autobiographical studies, I draw on insights from adoption studies. In my reading of Kay’s work, I pay special attention to the inequalities derived from the intersecting vectors of adoption and race, which also intersect with other dimensions of difference, such as nation, gender, class, and sexual orientation. I employ the notion of the multidirectional in the sense in which McLeod applies it to the study of adoption writing. As I demonstrate, multidirectionality and the complex form of Red Dust Road provide versatile means of conveying Kay’s fragmented acts of memory, which assist her ongoing mobile, processual identity construction. Her multidirectional lines of transformative attachments finally bond her to her adoptive and biogenetic families as well as other affective connections. While Kay’s socially significant narrative indicates, amongst other adoption issues, that transracial adoptions can be successful, it is significant that it has no closure. The last chapter gestures toward potential new beginnings, which indicates that the story of adoption has no end. Full article

In the present work, the possibility of applying severe torsion deformation (STD) to a bulk near-equiatomic NiTi shape memory alloy in order to accumulate super-high strain and improve mechanical and functional properties was studied. STD was performed using the multidirectional test system “BÄHR MDS-830” at a temperature of 500 °C (the upper border temperature for the development of dynamic polygonization) in 14 and 30 turns with accumulated true strain values of 4.3 and 9.1, respectively. Structural phase state and properties were studied using differential scanning calorimetry, X-ray diffractometry, transmission electron microscopy, hardness measurements, and thermomechanical bending tests. STD at 500 °C allowed for the accumulation of high strain without failure. As a result of STD in 30 turns, a submicrocrystalline structure with an average grain/subgrain size of about 500 nm was formed. This structure ensured the achievement of high maximum completely recoverable strain values of 6.1–6.8%. The results obtained show the prospects of applying severe torsion straining deformation to titanium nickelide in terms of forming an ultrafine-grained structure and high properties. Full article

In this article, I examine two case studies of spatial representation of atrocity and trauma: Jerzy Skąpski’s poster Każdy Dzień Oświęcimia (Every Day at Auschwitz) (1974), published in the October 1978 edition of The Unesco Courier, and the aesthetic/activist action known as “El Siluetazo” (1983), which was created by Rodolfo Aguerreberry, Julio Flores, and Guillermo Kexel, and carried out as a memory-activist intervention by the Mothers of Plaza de Mayo and the Argentinian public on 21–22 September 1983. To examine the interconnections of Holocaust memory within these two case studies, I follow Michael Rothberg’s notion of multidirectional memory and Astrid Erll’s conceptualization of transcultural and travelling memory. In particular, I analyze how Skąpski’s use of silhouettes to spatially depict the victims of Auschwitz is adopted and transformed by the Argentinian artists and public to denounce the disappearance of 30,000 of their compatriots. I argue that in outlining the figures of the victims of the Holocaust and the Argentinian dictatorship, respectively, these creative works exemplify the transcultural use of silhouettes originating in Holocaust memory and the multidirectional influence, derived from their organic connection, of spatial visualizations of absent bodies as they commemorate and make present the victims of these traumatic histories. Full article

The geography, histories, and ethnic composition of the Latin American continent pose a great challenge when attempting to identify and describe the region’s constitutive religious traditions and experiences. This task is further complexified by the hybridity, fluidity, and porosity of the region’s cultural groups. However, there is an aspect of Latin American religiosity that shares a significant family resemblance across the continent: the small community settings in which religiosity often emerges and consolidates as a worldview, commonly known as Ecclesial base communities. Informed by liberation theology, these communities are a uniquely generative experiment in social, political, and religious life. Scholarly accounts of liberation theology fail to identify key aspects of how Ecclesial base communities generate ways of being, knowing, and making meaning. While many of these accounts depict liberation theology as a socio-political discourse of theological origin, they do not unearth the multidirectional interaction between political practice and theological thought at the heart of these communities. In this paper, I aimed to fill this gap in the literature by reframing liberation theology as a set of social imaginaries, making use of Paul Ricoeur’s theories of memory and cultural imagination to provide the philosophical ground to understand the lived theology of Ecclesial base communities. In doing so, I maintain that liberation theology is not only a theoretical discourse that emerges from these communities, but also the inarticulate background of their ways of thinking, communicating, and living, one that provides an existential orientation through which Latin Americans can provide coherence to their collective action and recognize their own capacity to change their reality of oppression. Full article

This paper attempts a close study of Abe Kobo’s novel Woman in the Dunes and its screen adaptation (dir. Teshigahara Hiroshi 1964). Engaging adaptation studies, media studies, and sound studies, this paper moves from the conventional focus on the linear transfer of text from a source to a result, to examine adaptation as a multilevel, multisensory, and multidirectional process of remediation. By mediating documentary cinema and avant-garde tradition, the filmic adaptation, as the paper argues, not only provokes and enhances its literary original, but also illuminates existentialist concerns that gained critical currency in the 1960s. The paper moves on to analyze Takemitsu Toru’s score in relation to Teshigahara’s surrealist imagery; in doing so, it elucidates the way the film gives the sand a form of human agency alluded to yet not fully realized in Abe’s novel. Scrutiny of Abe and Takemitsu’s early years in Japan-occupied Manchuria further connects Abe’s work to the issue of postcolonial identity while opening Woman in the Dunes to more interpretative possibilities as an I-Novel. Through mediating collective history and personal memory, adaptation opens a dialogic intersubjective horizon where questions of identity and affect intersect in the post-war media environment. Full article