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Search for Charged Higgs Bosons Produced in Top-Quark Decays or in Association with Top Quarks and Decaying via H± → Ι± Ντ in 13 TeV pp Collisions with the ATLAS Detector
No full textKonstantinidis, Nikolaos/0000-0002-4140-6360; Cremonini, Davide/0000-0003-1687-3079; Rompotis, Nikolaos/0000-0003-2577-1875; Lanza, Agostino/0000-0003-4980-6032; Carmignani, Joseph (Joe)/0000-0002-1705-1061;Charged Higgs bosons produced either in top-quark decays or in association with a top quark, subsequently decaying via H-+/- -> tau(+/-) nu(tau), are searched for in 140 fb(-1) of proton-proton collision data at root s = 13 TeV recorded with the ATLAS detector. Depending on whether the top quark is produced ffiffis together with the H-+/- decays hadronically or semileptonically, the search targets tau + jets or tau + lepton final states, in both cases with a tau-lepton decaying into a neutrino and hadrons. No significant excess over the Standard Model background expectation is observed. For the mass range of 80 = m(H)(+/-) = 3000 GeV, upper limits at 95% confidence level are set on the production cross section of the charged Higgs boson times the branching fraction B(H-+/- -> tau(+/-) nu(tau)) in the range 4.5 pb-0.4 fb. In the mass range 80-160 GeV, assuming the Standard Model cross section for tt production, this corresponds to upper limits between 0.27% and 0.02% on B(t -> bH(+/-)) x B(H-+/- ->tau(+/-) nu(tau))
A Proposal for the Improvement of Daylight Integration and Distribution in the Educational Interior Space Through a (pro-Sun) Ceiling Design With Curved Surfaces
No full textThe use of daylight as the primary lighting source in buildings is crucial for achieving energy savings. Significantly reducing the dependence on artificial lighting sources relies on more efficient utilization of available daylight and enhancement of its quantity and distribution within interior spaces. The appropriate use of daylight not only enhances energy efficiency in indoor spaces but also positively impacts users’ health and performance. A growing body of research has focused on methods for maximizing the use of daylight in interior environments. This study proposes a ceiling design aimed at utilizing daylight more efficiently in interior spaces. The quantity of daylight in an educational space was calculated using the VELUX Daylight Visualizer program by comparing the results of existing, diagonal, and curved ceiling designs. Light levels were measured before and after the addition of Pro-Sun to assess daylight integration and distribution in the studios’ interior spaces. The design studio was analyzed based on orientation (north-south), school semester, active hours, and ceiling type. As a result of the comparison of ceiling types, the Pro-Sun ceiling system with curved reflectors had the most daylight integration capacity and distribution in the deeper the studio’s interior space. © 2025 by the authors
Maintenance Policies for Protection Systems With Imperfect Inspection and Imperfect Repair
No full textIn this study, we investigate the optimal maintenance policies for stochastically deteriorating protection systems with imperfect inspections and imperfect repairs. We model the system's degradation as a continuous-time Markov chain with three states: good, poor, and failed. Six unique maintenance policies are considered, ranging from minimal intervention to immediate replacement upon any detected deviation from the good state. Our objective is to determine the optimal policy and inspection period that minimize the long-term maintenance cost rate. Through numerical examples, we demonstrate that maintenance policies which account for the inherent imperfections and are tailored to the system parameters can result insignificant gains. We also assess the value of removing imperfections in the inspection or repair practices so that managers can focus their improvement efforts on the most promising activities. The original contribution of this study is the explicit construction and determination of the optimal maintenance policies specifically designed for protection systems that are subject to imperfect inspections and imperfect repairs. We develop a versatile model that facilitates a comparative evaluation of these policies, along with a sensitivity analysis regarding the uncertainty introduced by both the risky deterioration process and the imperfections in inspection and intervention actions
A Complete Circuit Model for Terahertz Spoof Surface Plasmon Polariton Waveguides for Ultrafast and Accurate Synthesis of Terahertz Integrated Circuits
No full textThe increasing demand for ultra-wideband wireless communications has pushed requirements of integrated circuits (ICs) to terahertz band. Operation in the terahertz band requires ultra-high efficiency for all the building blocks in ICs; however, the conventional passive components prevent achieving desired output power levels. Moreover, these components also strongly impede the synthesis of ICs as the design flow requires an enormous number of full-wave analyses. In this paper, we present the first-ever, complete, closed form, theoretical model for Terahertz Spoof Surface Plasmon Polariton Waveguides (THz-SSPP WGs), which hold the record for the lowest loss performance among all the planar waveguides at 0.3 THz. The electromagnetic field distribution around the THz-SSPP WG is non-uniform that even makes the solution of the problem of a nonlinear differential equation of multiple variables even more challenging. Because the guided-wavenumber is non-linear because of the dispersive behavior of the waveguide and the field distribution, hence the boundary conditions depend on all the corrugation dimensions, substrate thickness, and material properties. The proposed model is the first complete closed-form model not only among all THz-SSPP WGs, but also any single conductor planar waveguide. The proposed model illustrates the behavior of the confined and propagated electromagnetic wave around the THz-SSPP WGs, where the field distribution pattern changes as any of the waveguide parameter changes in contrast with any conventional waveguide with a ground.TUBITAK [119E489]; Horizon Europe Marie Sklodowska-Curie Actions(MSCA) Post-Doctoral Fellowship [101062272-ENSPEC6G]This work was supported in part by TUBITAK under Grant 119E489, and in part by the Horizon Europe Marie Sklodowska-Curie Actions(MSCA) Post-Doctoral Fellowship under Grant 101062272-ENSPEC6G
Caval Valve Implantation Procedure in 7 Cases of Torrential Tricuspid Regurgitation and Step-By Description of the Procedure
No full textTricuspid regurgitation (TR) is an increasingly prevalent and clinically significant health problem.1 Due to the growing understanding of the importance of TR, the tricuspid valve has transitioned from being a forgotten valve to one of significant concern. Tricuspid regurgitation is often functional, and as it progresses to moderate or severe stages, hospital admissions increase and prognosis worsens.1,2 There are no effective pharmacological treatments for TR, and the 5-year survival rate with medical management is reported to be less than 50%.3 Therefore, early diagnosis and timely intervention for TR is crucial. Both surgical and percutaneous treatment options are available for severe TR. The mortality rate for isolated TR surgery is generally high.4 In recent years, transcatheter treatments have become feasible for this patient group, and accumulating evidence shows that transcatheter treatment is superior to medical management.5,6 Transcatheter interventions for TR can be performed in 4 ways, 2 involving repair and 2 involving valve We aimed to present our experience with transcatheter caval valve implantation (CAVI) in 7 patients with torrential TR who were not suitable for surgical intervention or transcatheter edge-to-edge repair (T-TEER) due to severe coaptation defects, review the current literature, and provide a step-by-step description of the procedure
Evaluation of Retinal and Choroidal Structures in Patients With Ulcerative Colitis
No full textPurpose To evaluate the macula, peripapillary retinal nerve fiber layer (RNFL) thickness, retinal layers, and choroidal vascularity index (CVI) in patients with ulcerative colitis (UC). Methods A total of 92 patients were included in this study, with 40 in the UC group and 52 in the control group. RNFL, retinal layer, and central macular thickness (CMT) measurements were performed using spectral-domain optical coherence tomography (SD-OCT) (Spectralis, Heidelberg Engineering, Heidelberg, Germany). Choroidal thickness (CT) and CVI were acquired using the enhanced depth imaging mode of SD-OCT. UC disease activity was assessed according to the Mayo endoscopic score. Results The mean values of the CMT, ganglion cell layer, inner plexiform, and outer nuclear layer thickness in the UC group were significantly thinner than the control (p 0.05, each). While CT values at three different areas were higher in the UC group, only the temporal CT value was significant between groups (p = 0.004). The luminal area (LA) and CVI were significantly lower in the UC group compared with the controls (p 0.05, each). The stromal area was significantly higher in the UC group than controls (p 0.001). Correlation analyses between the Mayo disease activity index and LA, subfoveal, and temporal CT values revealed moderate positive correlations (p = 0.009, r = 484; p = 0.003, r = 545; p = 0.007, r = 497, respectively). Conclusion UC patients have altered retinal and choroidal structures. Further research on the association between disease activity and choroidal vascular structures may contribute to these findings
Release Profile and in Vitro/In Vivo Studies on Bioengineered Bioactive Food Component-Loaded Electrospun Fibers and Electrosprayed Particles
No full textElectrospinning and electrospraying are promising methods of producing nanoparticles and nanofibers with high surface area-to-volume ratios. When these techniques are employed to produce bioactive food component (BFC)-loaded materials, several features that generally restrict their application, such as stability, loading capacity, low solubility, and bioavailability, can be conveniently improved. Such improvement maximizes their utilization in various application areas, particularly food engineering and health technologies. This chapter first explains the impact of different carrier-BFC formulations and process parameters on the features of engineered materials. Afterwards, an overview of kinetic models for understanding BFC release and the significance of in vitro/in vivo studies, which give valuable insights into their physiological interaction, cellular response, and therapeutic potential, are overviewed. Following a critical assessment of the advantages and disadvantages of each method, a perspective on up-and-coming techniques that can facilitate the large-scale development and preclinical evaluation of future bioengineered BFCs to facilitate their translational development is provided. © 2025 Elsevier Inc. All rights reserved
Mimarlık Eğitiminde İlk Yıl için Potansiyel Bir İş Birlikçi Tasarım ve Üretim Modeli Olarak Arkio
No full textTeknolojideki gelişmeler, dijital araçların eğitimde benimsenmesini ve dönüşümünü önemli ölçüde hızlandırmıştır. Bu araçlar arasında, bilgisayar destekli tasarım ve sanal gerçeklik, mimarlık eğitiminde öne çıkan teknolojiler haline gelmiştir. Bu yenilikler, öğrencilerin fiziksel varlıklarına duyulan bağımlılığı azaltarak iş birliğine dayalı tasarım süreçleri için dönüştürücü bir potansiyel sunmaktadır. Bilgisayar destekli tasarım ve sanal gerçeklik, öğrencilerin ortak hedefler doğrultusunda birlikte çalışabilecekleri ortamlar yaratmak amacıyla mimarlık eğitimine giderek daha fazla entegre edilmektedir. Mimarlık öğrencileri ve profesyonelleri için özel olarak tasarlanmış bir platform olan Arkio, bina modelleme, iç mekan tasarımı ve peyzaj mimarlığı gibi alanlarda sanal üretim olanakları sunmaktadır. Bulut tabanlı iş birliği ve gerçek zamanlı etkileşim özellikleri sayesinde, Arkio mimarlık eğitimi için potansiyeli olan bir araçtır. Bireysel tasarım görevlerine odaklanan diğer sanal gerçeklik platformlarının aksine, Arkio, tek bir model üzerinde eş zamanlı çok kullanıcılı iş birliğini kolaylaştırmaktadır. Bu yapısı ile, özellikle birinci sınıf mimarlık öğrencileri için tasarım öğreniminde kolektif katılımı destekleyerek eğitim sürecinde önemli bir araç haline gelmektedir. Bu tez, Arkio'nun iş birliğine dayalı tasarım olarak potansiyelini ve ayırt edici özelliklerini analiz etmektedir. Birinci sınıf tasarım derslerine uygulanmasına odaklanarak, Arkio'nun mimarlık eğitimini geliştirme konusundaki güçlü ve zayıf yönleri değerlendirilmektedir. Ayrıca, bilgisayar destekli tasarım ve sanal gerçeklik teknolojilerinin iş birliğine dayalı tasarım iş akışlarına entegrasyonunu inceleyerek, Arkio ve benzeri platformların gelişimine katkıda bulunmayı amaçlamaktadır. Araştırma, bu teknolojilerin iş birliğine dayalı tasarım süreçlerine etkilerini ve bu etkilerin mimarlık öğrencilerinin eğitim deneyimini nasıl şekillendirdiğini ortaya koymaktadır. Sonuç olarak, Arkio'nun mimarlık eğitiminde kolektif katılımı destekleyen bir araç olduğu vurgulanmaktadır. Bununla birlikte, platformun teknik sınırlamaları ve kullanıcı deneyimi konusundaki iyileştirme gereklilikleri de tartışılmaktadır. Elde edilen bulgular, özellikle birinci sınıf mimarlık öğrencilerinin eğitim deneyimlerinin iş birliği ve üretim odaklı süreçlerle nasıl şekillendirilebileceğine dair yeni bakış açıları sunmaktadır.Advancements in technology have significantly accelerated the adoption and transformation of digital tools in education. Among these tools, computer-aided design and virtual reality have emerged as pivotal technologies in architectural education. These innovations diminish the dependency on students' physical presence, offering transformative potential for collaborative design processes. Computer-aided design and virtual reality are increasingly incorporated into architectural education to foster environments where students can work together toward shared objectives, enabling them to engage in collaborative design practices. Arkio, a platform designed specifically for architects and architecture students, offers virtual production capabilities across domains such as building modeling, interior design, and landscape architecture. With its cloud-based collaboration and real-time interaction features, Arkio is particularly valuable for architectural education. Unlike other virtual reality platforms that emphasize individual design tasks, Arkio facilitates simultaneous multi-user collaboration on a single model. This unique structure supports collective participation in design processes, making it an essential tool for learning design, especially for first-year architecture students. This thesis analyzes Arkio's potential and distinctive features as a collaborative design platform. By focusing on its application in first-year design courses, the study evaluates the strengths and weaknesses of Arkio in enhancing architectural education. Additionally, it examines the integration of CAD and VR technologies into collaborative design workflows, aiming to contribute to the development of Arkio and similar platforms. The research highlights the impact of these technologies on collaborative design processes and explores how they shape the educational experiences of architecture students. In conclusion, the findings emphasize Arkio's role as a tool that supports collective engagement in architectural education. However, the discussion also addresses the platform's technical limitations and the need for improvements in user experience. The insights gained provide new perspectives on how the educational experiences of first-year architecture students can be shaped through collaboration- and production-focused processes
Near-Field Signal Processing: Unleashing the Power of Proximity
No full textAfter nearly a century of specialized applications in optics, remote sensing, and acoustics, the near-field (NF) electromagnetic (EM) propagation zone is experiencing a resurgence in research interest. This renewed attention is fueled by the emergence of promising applications in various fields, such as wireless communications, holography, medical imaging, and quantum-inspired systems. Signal processing within NF sensing and wireless communications environments entails addressing issues related to extended scatterers, range-dependent beampatterns, spherical wavefronts, mutual coupling effects, and the presence of both reactive and radiative fields. Recent investigations have focused on these aspects in the context of extremely large arrays and wide bandwidths, giving rise to novel challenges in channel estimation, beamforming, beam training, sensing, and localization. While NF optics has a longstanding history, advancements in NF phase retrieval (PR) techniques and their applications have lately garnered significant research attention. Similarly, utilizing NF localization with acoustic arrays represents a contemporary extension of established principles in NF acoustic array signal processing. This article aims to provide an overview of state-of-the-art signal processing techniques within the NF domain, offering a comprehensive perspective on recent advances in diverse applications. © 1991-2012 IEEE
Attachment of Toddlers in Care With the Moderating Role of Temperament: Turkish Care Types Study
No full textDue to adverse circumstances in institutional care settings, institutionalized children are at risk of developing insecure attachment types and attachment disorders. The current study examined the role of institutionalization on attachment by comparing children residing in institutions with children in foster care and never-institutionalized children living in T ; uuml;rkiye. Further, the moderating role of children's temperamental characteristics (i.e., frustration and perceptual sensitivity) between the care groups and attachment was investigated. In total, 103 children (18-39 months old; 37 residing in institutions, 29 in foster care families, and 37 never-institutionalized children living with their biological families), and their caregivers participated. Attachment types were assessed via an observation-based measurement tool. Attachment disorders were assessed via interviews with caregivers. Temperamental characteristics were measured by a caregiver-reported questionnaire. The results indicated that children in institutions had less secure, more avoidant, and disorganized attachment types than those in foster care and never-institutionalized children. Furthermore, children with low perceptual sensitivity displayed more avoidant attachment if they stayed in institutions compared to their peers in foster care. Being in foster care and having high levels of perceptual sensitivity negatively predicted Reactive Attachment Disorder. The findings indicate important implications for future studies and social policies.Scientific and Technological Research Council of Turkey [113K222]Scientific and Technological Research Council of Turkey, Grant/Award Number:113K22