bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stripped and layered fabrication of minimal surface tectonics using parametric algorithms
Authors: Gokmen Sabri 
Published: September 2023

Abstract
This article describes a parametric design and fabrication workflow influenced by Frei Otto’s form-finding experiments on soap films. The research investigates minimal surface geometry by combining physical and digital experiments in a computational framework. Operating on mesh topology, various parametric design tools and plug-ins in Rhinoceros/Grasshopper are presented to discuss the translation of minimal surfaces to flat strips suitable for planar fabrication using flexible materials. These tools are tested on a case study to show the automated design and manufacture of double-curved surfaces as double-layered strips running in perpendicular directions that can be affixed at point connections for structural stability. The development of the parametric workflow, material constraints, and stripped fabrication of layers are discussed.
A single phase modified Y-source inverter with high voltage gains and reduced switch stresses
Authors: Altintas Hasan Basri , Kulaksiz Ahmet Afsin 
Published: September 2023

Abstract
This study is dedicated to develop a single-phase modified Y-source inverter (m-YSI) topology having a high boost factor and low switch voltage stress by adding a switch to the low voltage region. Thanks to this structure, continuous input current and wide control range are achieved regardless of winding factor. Since an external switch is used in the recommended modified Y-source inverter, the modulation index and duty ratio are controlled independently. Detailed analyses of the modified Y-source inverter were performed using Matlab/Simulink and its performance was compared with conventional Y-source inverters. Compared to selected conventional Y-source inverters, the proposed m-YSI has almost three times less voltage stress. A lower-cost topology has been obtained in which state-of-the-art control methods can be applied, thanks to a wide control range and circuit components with a low power ratio. This proposed model can be used as a double-stage micro-inverter in photovoltaic systems.
On Hermite-Hadamard-type inequalities for systems of partial differential inequalities in the plane
Authors: Jleli Mohamed , Samet Bessem 
Published: September 2023

Abstract
We establish necessary conditions for the existence of solutions to various systems of partial differential inequalities in the plane. The obtained conditions provide new Hermite-Hadamard-type inequalities for differentiable functions in the plane. In particular, we obtain a refinement of an inequality due to Dragomir [On the Hadamard’s inequality for convex functions on the co-ordinates in a rectangle from the plane, Taiwan. J. Math. 5 (2001), no. 4, 775–788] for convex functions on the coordinates.
Influence of heat input on temperature and stress field of X80 steel pipeline cirumferential weld using type-B sleeve repairing
Authors: Guo Lei , Wu Mingchang , Xu Yan , Wang Leilei , Yang Fengping , Bai Qiang , Feng Zhenjun , Zhang Xiaoyong , Lu Yongxin 
Published: September 2023

Abstract
The multi-pass fillet welds of casing pipe were welded onto the in-service pipeline, which is widely used in pipeline repairs. However, the influence of welding heat input of B-type sleeve circumferential fillet weld on the temperature and stress field at the pipe circumferential weld is still unclear. In this paper, a double ellipsoid heat source model is developed to investigate the weld temperature field, residual stress field, and deformation field of the repair welding in service. The results show that the increase of weld heat input can effectively increase the size of the weld pool and the size of the high-temperature zone of the B-type sleeve circumferential fillet weld. And the peak temperature of the inner wall of the pipe girth weld increases with the increase of welding heat input of the sleeve circumferential fillet weld. The axial stress peak of the inner wall of the pipe girth weld reduces with the increase of welding heat input of sleeve circumferential fillet weld, and the axial deformation peak of the inner wall of the pipe girth weld increases first and then decreases with the increase of welding heat input of sleeve circumferential fillet weld.
Feature-enhanced X-ray imaging using fused neural network strategy with designable metasurface
Authors: Shi Hao , Sun Yuanhe , Liang Zhaofeng , Cao Shuqi , Zhang Lei , Zhu Daming , Wu Yanqing , Yao Zeying , Chen Wenqing , Li Zhenjiang , Yang Shumin , Zhao Jun , Wang Chunpeng , Tai Renzhong 
Published: September 2023

AbstractScintillation-based X-ray imaging can provide convenient visual observation of absorption contrast by standard digital cameras, which is critical in a variety of science and engineering disciplines. More efficient scintillators and electronic postprocessing derived from neural networks are usually used to improve the quality of obtained images from the perspective of optical imaging and machine vision, respectively. Here, we propose to overcome the intrinsic separation of optical transmission process and electronic calculation process, integrating the imaging and postprocessing into one fused optical–electronic convolutional autoencoder network by affixing a designable optical convolutional metasurface to the scintillator. In this way, the convolutional autoencoder was directly connected to down-conversion process, and the optical information loss and training cost can be decreased simultaneously. We demonstrate that feature-specific enhancement of incoherent images is realized, which can apply to multi-class samples without additional data precollection. Hard X-ray experimental validations reveal the enhancement of textural features and regional features achieved by adjusting the optical metasurface, indicating a signal-to-noise ratio improvement of up to 11.2 dB. We anticipate that our framework will advance the fundamental understanding of X-ray imaging and prove to be useful for number recognition and bioimaging applications.
Topological degeneracy breaking in synthetic frequency lattice by Floquet engineering
Authors: Qiao Xin , Wang Luojia , Li Guangzhen , Chen Xianfeng , Yuan Luqi 
Published: September 2023

AbstractSynthetic frequency dimensions provide important opportunities to investigate novel topological phenomena. Previously, many theoretical proposals have been studied and relevant experiments have been performed very recently. However, all these works consider models in the weak modulation regime, where static lattice models are constructed. Here we explore a Floquet Su–Schrieffer–Heeger (SSH) model with time-dependent hoppings in the frequency dimension by dynamically modulating ring resonators ultrastrongly, and find that the topological states, originally degenerate in conventional SSH lattices, are separated in eigenenergies. There exists a series of edge states from band folding at the 0 andπenergy bandgaps, which exhibit complex multi-frequency oscillations due to the inclusion of counter-rotating terms with higher order oscillation frequencies. Such a system with stronger modulations can widen the bandgap and therefore it provides an effective way to localize pulses in synthetic frequency dimensions. Our work shows a photonic platform with the synthetic dimension in exploring exotic Floquet topological phenomena and shows potential applications in optical storage and communications.
Compradors of China’s Global Power: The Colonialization of Hungarian and Nicaraguan Academia through Anti-imperialist Tropes
Authors: Palm Daniel 
Published: September 2023

Abstract
Literature discussing imperialism and neo-colonial practices focuses on the alleged power of the West and/or the United States, as well as global neoliberalism. This article argues that neo-colonial knowledge production in the autocratizing regimes of Hungary and Nicaragua reflects the rising importance of China. It shows how both governments seek to set forth new schools of thought suiting their worldview. The People’s Republic of China serves as a narrative fix point for legitimizing dissociative diplomatic agendas via comprador academics supported by their government. In what is presented as changing global orders, China joins Russia as a new counterweight to the presupposed U.S. hegemonic and liberal interests. Besides advocating for new partners in the East, compradors colonializing academia argue for the distinctive needs of their respective nations represented by the government. Interviews, publications, and news reports allow one to reconstruct their colonialization efforts to support such nationalist narratives on China’s rise as a global power.
An effective framework to improve the managerial activities in global software development
Authors: Siddique Saba , Naveed Muhammad , Ali Atif , Keshta Ismail , Satti Muhammad Islam , Irshad Azeem , Alomari Zakaria , Edo Onome Christopher , Diekola Oladapo Ayodeji 
Published: September 2023

Abstract
Global Software Development (GSD) is a contemporary approach to software development that offers numerous advantages, including enhanced cost-effectiveness and timely delivery. It enables access to a vast pool of skilled developers and facilitates the exchange of best practices and innovative ideas within the software industry. However, effective project management plays a vital role in ensuring successful product development. Organizations that achieve project success consistently adhere to well-defined project management methodologies, resulting in desired outcomes within predefined time frames and allocated resources. The success rate of software projects significantly increases with diligent software management efforts. Nevertheless, the distributed nature of GSD presents significant challenges related to collaboration, information dissemination, and process control, which ultimately impede effective development and compromise software quality. In this study, we identify various challenges associated with the GSD process and propose strategies to overcome obstacles to effective project management. Additionally, we introduce a comprehensive framework designed to enhance managerial activities in GSD.
Rapid and Visual Detection of Monkey B Virus Based on Recombinase Polymerase Amplification
Authors: Chen Xinlan , Liu Chenchen , Li Fangxu , Zhou Junhui , Huang Zanheng , Zhang Haili , Wang Hualei , Huang Pei , Cao Zengguo , Chiu Sandra 
Published: September 2023

Objective:
Monkey B virus (BV) infection in humans and other macaque species has a mortality rate of approximately 80%. Because BV infects humans through bites, scratches, and other injuries inflicted by macaques, the simple and rapid diagnosis of BV in field laboratories is of great importance to protect veterinarians, laboratory researchers, and support personnels from the threat of infection.

Methods:
Two recombinase polymerase amplification (RPA) assays with a closed vertical flow (VF) visualization strip (RPA-VF-UL27 and RPA-VF-US6) were developed that target two conserved genes combined with a one-off, closed visualization strip device. We compared the sensitivities and specificities of the two assays after optimization of the reaction conditions. The performance of RPA-VF-US6 at room temperature was determined to evaluate its potential in point-of-care (POC) testing.

Result:
RPA-VF-US6 specifically detected the positive plasmid control (rather than nucleic acids of herpesviruses) with a detection limit of 28 copies, while RPA-VF-UL27 had cross-reactivity with HSV-1, but even 3.4 copies of plasmid standards were readout by this assay. Moreover, RPA-VF-US6 had excellent performance at room temperature (the detection limit was 2,800 plasmid copies), indicating the potential of RPA-VF-US6 in POC testing.

Conclusion:
We developed two RPA assays for BV visualization diagnosis. RPA-VF-US6 is a simple, rapid, and specific detection method for BV. The entire reaction can be performed at a constant temperature within 30 min, suggesting the potential of RPA-VF-US6 for POC testing in field laboratories without sophisticated instruments.
Haploinsufficiency ofShank3in Mice Selectively Impairs Target Odor Recognition in Novel Background Odors
Authors: Ryndych Darya , Sebold Alison , Strassburg Alyssa , Li Yan , Ramos Raddy L. , Otazu Gonzalo H. 
Published: September 2023

Individuals with mutations in a single copy of the SHANK3 gene present with social interaction deficits. Although social behavior in mice depends on olfaction, mice with mutations in a single copy of theShank3gene do not have olfactory deficits in simple odor identification tasks (Drapeau et al., 2018). Here, we tested olfaction in mice with mutations in a single copy of theShank3gene (Peça et al., 2011) using a complex odor task and imaging in awake mice. Average glomerular responses in the olfactory bulb ofShank3B+/−were correlated with WT mice. However, there was increased trial-to-trial variability in the odor responses forShank3B+/−mice. Simulations demonstrated that this increased variability could affect odor detection in novel environments. To test whether performance was affected by the increased variability, we tested target odor recognition in the presence of novel background odors using a recently developed task (Li et al., 2023). Head-fixed mice were trained to detect target odors in the presence of known background odors. Performance was tested using catch trials where the known background odors were replaced by novel background odors. We compared the performance of eightShank3B+/−mice (five males, three females) on this task with six WT mice (three males, three females). Performance for known background odors and learning rates were similar betweenShank3B+/−and WT mice. However, when tested with novel background odors, the performance ofShank3B+/−mice dropped to almost chance levels. Thus, haploinsufficiency of theShank3gene causes a specific deficit in odor detection in novel environments. Our results are discussed in the context of otherShank3mouse models and have implications for understanding olfactory function in neurodevelopmental disorders.SIGNIFICANCE STATEMENTPeople and mice with mutations in a single copy in the synaptic gene Shank3 show features seen in autism spectrum disorders, including social interaction deficits. Although mice social behavior uses olfaction, mice with mutations in a single copy of Shank3 have so far not shown olfactory deficits when tested using simple tasks. Here, we used a recently developed task to show that these mice could identify odors in the presence of known background odors as well as wild-type mice. However, their performance fell below that of wild-type mice when challenged with novel background odors. This deficit was also previously reported in the Cntnap2 mouse model of autism, suggesting that odor detection in novel backgrounds is a general deficit across mouse models of autism.
Expectation Cues and False Percepts Generate Stimulus-Specific Activity in Distinct Layers of the Early Visual Cortex
Authors: Haarsma Joost , Deveci Narin , Corbin Nadege , Callaghan Martina F. , Kok Peter 
Published: September 2023

Perception has been proposed to result from the integration of feedforward sensory signals with internally generated feedback signals. Feedback signals are believed to play an important role in driving false percepts, that is, seeing things that are not actually there. Feedforward and feedback influences on perception can be studied using layer-specific fMRI, which we used here to interrogate neural activity underlying high-confidence false percepts while healthy human participants (N= 25, male and female) performed a perceptual orientation discrimination task. Auditory cues implicitly signaled the most likely upcoming orientation (referred to here as expectations). These expectations induced orientation-specific templates in the deep and superficial layers of V2, without affecting perception. In contrast, the orientation of falsely perceived stimuli with high confidence was reflected in the middle input layers of V2, suggesting a feedforward signal contributing to false percepts. The prevalence of high-confidence false percepts was related to everyday hallucination severity in a separate online sample (N= 100), suggesting a possible link with abnormal perceptual experiences. These results reveal a potential feedforward mechanism underlying false percepts, reflected by spontaneous stimulus-like activity in the input layers of the visual cortex, independent of top-down signals reflecting cued orientations.SIGNIFICANCE STATEMENTFalse percepts have been suggested to arise through excessive feedback signals. However, feedforward contributions to false percepts have remained largely understudied. Laminar fMRI has been shown to be useful in distinguishing feedforward from feedback activity as it allows the imaging of different cortical layers. In the present study we demonstrate that although cued orientations are encoded in the feedback layers of the visual cortex, the content of the false percepts are encoded in the feedforward layers and did not rely on these cued orientations. This shows that false percepts can in principle emerge from random feedforward signals in the visual cortex, with possible implications for disorders hallmarked by hallucinations like schizophrenia and Parkinson's disease.
IκB kinase‐α coordinates BRD4 and JAK/STAT signaling to subvert DNA damage‐based anticancer therapy
Authors: Pecharromán Irene , Solé Laura , Álvarez‐Villanueva Daniel , Lobo‐Jarne Teresa , Alonso‐Marañón Josune , Bertran Joan , Guillén Yolanda , Montoto Ángela , Martínez‐Iniesta María , García‐Hernández Violeta , Giménez Gemma , Salazar Ramon , Santos Cristina , Garrido Marta , Borràs Eva , Sabidó Eduard , Bonfill‐Teixidor Ester , Iurlaro Raffaella , Seoane Joan , Villanueva Alberto , Iglesias Mar , Bigas Anna , Espinosa Lluís 
Published: September 2023

AbstractActivation of the IκB kinase (IKK) complex has recurrently been linked to colorectal cancer (CRC) initiation and progression. However, identification of downstream effectors other than NF‐κB has remained elusive. Here, analysis of IKK‐dependent substrates in CRC cells after UV treatment revealed that phosphorylation of BRD4 by IKK‐α is required for its chromatin‐binding at target genes upon DNA damage. Moreover, IKK‐α induces the NF‐κB‐dependent transcription of the cytokine LIF, leading to STAT3 activation, association with BRD4 and recruitment to specific target genes. IKK‐α abrogation results in defective BRD4 and STAT3 functions and consequently irreparable DNA damage and apoptotic cell death upon different stimuli. Simultaneous inhibition of BRAF‐dependent IKK‐α activity, BRD4, and the JAK/STAT pathway enhanced the therapeutic potential of 5‐fluorouracil combined with irinotecan in CRC cells and is curative in a chemotherapy‐resistant xenograft model. Finally, coordinated expression of LIF and IKK‐α is a poor prognosis marker for CRC patients. Our data uncover a functional link between IKK‐α, BRD4, and JAK/STAT signaling with clinical relevance.
Caracterización climática y análisis de mecanismos moduladores del descenso de las lluvias en la vertiente Caribe de América Central durante septiembre-octubre
Authors: Alfaro Martínez Eric J. , Alvarado Gamboa Luis F. , Fallas López Berny G. , Mora Sandí Natali P. , Hidalgo León Hugo G. 
Published: September 2023

[Introducción]: La vertiente Caribe de América Central se encuentra a barlovento de los vientos alisios asociados con la Alta Subtropical del Atlántico Norte y presenta un ciclo anual de precipitación bimodal, donde se observa un mínimo relativo en los meses de septiembre y octubre. [Objetivo]: Caracterizar el descenso observado en las lluvias en esta región en ese bimestre, estimando, para cada evento, las variables asociadas con los valores del día del inicio, día del mínimo, día del final, duración, intensidad y magnitud, en el periodo 1979-2010. [Metodología]: Se usaron 31 registros diarios de estaciones pluviométricas. Se examinó, en cada una de ellas, los meses de julio a noviembre, para encontrar los valores del mínimo, la fecha del mínimo, del inicio y del final, duración e intensidad. Se exploró la ocurrencia de alguna tendencia temporal o espacial en las características de los eventos. Por último, se revisaron diferentes índices climáticos y fuentes documentales para identificar las posibles causas sinópticas de los descensos más fuertes en las lluvias. [Resultados]: El inicio de los eventos se observó alrededor del 3 de septiembre, su mínimo el 23 de septiembre y el final 12 de octubre, con una duración aproximada de 39 días. Los eventos tienden a suceder primeramente en las estaciones ubicadas al noroeste del istmo. Los eventos más secos sucedieron bajo condiciones propicias para la ocurrencia de vientos con componente suroeste-oeste sobre la región. [Conclusiones]: El conocimiento sobre estas características de la precipitación ayuda en la planificación de sectores socioeconómicos claves en América Central ante eventuales eventos hidrometeorológicos adversos.
Sobre derechos humanos en el pensamiento de Helio Gallardo: praxis de liberación, tramas sociales y multi-garantías
Authors: Sánchez Rubio David 
Published: September 2023

En este trabajo se analizan algunos de los aportes del pensamiento de Helio Gallardo en materia de derechos humanos.Partiendo del problema fundamental que presentan los derechos humanos, referido a la distancia y el abismo que existe entre sus discursos, sus teorías y sus prácticas, entre lo que se dice y lo que se hace, se reflexiona sobre su propuesta socia-materialista basada en los procesos de lucha y las experiencias de contrastes de las organizaciones sociales modernas y sus movimientos sociales frente a las deficiencias y los sistemas de dominación del orden burgués y capitalista.
Tras una descripción de sus análisis de las luchas sociales y la praxis de liberación, se propone un sistema multi-garantista de derechos humanos que gira en torno a las prácticas y acciones individuales y colectivas que despliegan una realidad de los mismos basados en una cultura que los concibe multidimensionalmente a tiempo completo y en todo lugar.
The “School Meals Market” in Hungary — Typical Characteristics of Demand and Supply
Authors: Kelemen Katalin 
Published: September 2023

AbstractThe present study examines the Hungarian practice of public catering for children from an economic perspective, bearing in mind that the production and consumption of food is, at the same time, an economic activity. Taking this approach, we focus on which institutions contribute to or hinder efficiency, by which we mean the efforts of economic agents to generate maximum welfare from the available (meager) resources. For social reasons, the supply of public catering for children is a statutory obligation on the part of local authorities, where efficiency must be combined with social considerations. The study reviews the rationing mechanism of school meals catering as a public service, looking first at the main factors determining the level of demand for public catering for children, and then at the main factors that influence supply.