bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties
Authors: Ghanim Abdulnour Ali Jazem , Amin Mohamed , Zeyad Abdullah M. , Tayeh Bassam A. , Agwa Ibrahim Saad 
Published: April 2023

AbstractThis paper aims to study the effect of using modified nano‐TiO2 with fly ash (FA) on ultra‐high performance concrete's (UHPC) mechanical, transport, and microstructure properties (UHPC). A ball mill was used to disband the nano‐TiO2 and distribute it uniformly within the FA powder. In this research, 20% of the cement weight was replaced by FA, and nano‐TiO2 was added by 0.4%, 0.8%, 1.2%, 1.6%, and 2% of the FA weight. To investigate the effect of the ball mill period on the UHPC properties, periods of 10, 20, 30, and 40 min were applied to a binder of 20% FA and with 6% nano‐TiO2. In addition, a 30‐min ball mill period on a binder of 20% FA and 0.4%, 0.8%, 1.2%, 1.6%, and 2% nano‐TiO2 was also investigated. Tests of compressive strength after 1, 7, 28, and 91 days of curing in tap water, splitting tensile strength, flexural strength, and modulus of elasticity were performed after 28 days of curing in tap water. Tests of chloride permeability, sorptivity coefficient, water permeability, and microstructure were also performed after 28 days of curing in tap water. The results showed that the addition of higher percentages of nano‐TiO2 led to a decrease in workability. The addition of nano‐TiO2 improved the mechanical properties. The highest compressive strength of 208.9 MPa was achieved for the mixture of 20% FA with 1.2% nano‐TiO2 at the age of 28 days. The 30‐min period of application of the ball mill achieved the best performance compared with the other periods. The results of using a ball‐mill to re‐mix nano‐TiO2 between 1.2% and 2% by weight with FA showed impressive comparative results.
A New Dual Mode Blind Equalization Method Based on Neighborhood Symbol‐Based Decision and Decision‐Directed Algorithm
Authors: Hu Xiaoxi , Zhou Yi , Qin Kaiyu , Li Mingyu 
Published: April 2023

AbstractIn this paper, a new dual mode blind equalization method using neighborhood symbol‐based decision and decision‐directed (NSBD‐DD) algorithm is proposed to equalize the satellite communication signals. The proposed algorithm adopts the combined cost function to employ the advantages of symbol decision algorithm and the decision‐directed algorithm, which can further improve the universality of the proposed algorithm. Compared with the conventional blind equalization algorithm, the compensation ability of intersymbol interference and convergence speed of the proposed algorithm can be improved simultaneously. To verify the performance of the proposed algorithm, the computer simulation is performed, and the simulation results show that the residual intersymbol interference of the 64QAM signals can be decreased to −50 dB under the satellite channel, which has 30 dB lower than multi‐modulus algorithm (MMA), 26 dB lower than NSBD algorithm, and 10 dB lower than SBD algorithm. And compared with SBD algorithm, the number of iterations required for the NSBD‐DD algorithm can be decreased from 8000 iterations to 6000 iterations, which convergence speed is increased by 25%. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.
Zentrale Positionierungen – eine erste Verdichtung
Authors: Bührig-Hollmann Annette 
Published: April 2023

ZusammenfassungDie Positionierungen, wie sie im Rahmen dieser Forschungsarbeit von den an der UNB Beteiligten beobachtet und analysiert werden, gelten als ein selbstverständlich auftretendes Phänomen, das in jeder Interaktion zu beobachten ist. Die Anteile und die Formen der jeweiligen Positionierungsarbeit können allerdings stark voneinander abweichen. Getätigte Positionierungen haben erhebliche interaktionslogische Konsequenzen. Es kann als ein eklatanter Gesichtsverlust gelten, wenn Selbstpositionierungen korrigiert werden. Die Imagepflege der Interagierende muss bei den Interagierenden fortwährend berücksichtigt werden. Andernfalls riskiert man einen interaktionsrelevanten Konflikt.
Creating Synthetic Training Data for Machine Vision Quality Gates
Authors: Gräßler Iris , Hieb Michael , Roesmann Daniel , Unverzagt Marc 
Published: April 2023

AbstractManufacturing companies face the challenge of combining increasing productivity and quality standards with customer″​=oriented mass production. To achieve the required quality standards, quality controls are carried out after selected production steps. These are often visual inspections by trained personnel based on checklists. To automate visual inspection industrial, cameras and powerful machine vision algorithms are needed. Large amounts of visual training data are usually required in order to train these algorithms. However, collecting training data is time″​=consuming, especially in customer″​=oriented mass production. Synthetic training data generated by CAD tools and rendering software can alleviate the lack of available training data. Within the paper at hand, a novel approach is presented examining the use of synthetic training data in machine vision applications. The results show that synthetically generated training data used to train machine vision quality gates is fundamentally suitable. This offers great potential to relieve process and productions developers in the development of quality gates in the future.
FI-flows of 3d N=4 theories
Authors: Bourget Antoine , Giacomelli Simone , Grimminger Julius F. 
Published: April 2023

Abstract
We study the 3d $$ \mathcal{N} $$
N
= 4 RG-flows triggered by Fayet-Iliopoulos deformations in unitary quiver theories. These deformations can be implemented by a new quiver algorithm which contains at its heart a problem at the intersection of linear algebra and graph theory. When interpreted as magnetic quivers for SQFTs in various dimensions, our results provide a systematic way to explore RG-flows triggered by mass deformations and generalizations thereof. This is illustrated by case studies of SQCD theories and low rank 4d $$ \mathcal{N} $$
N
= 2 SCFTs. A delightful by-product of our work is the discovery of an interesting new 3d mirror pair.
ICE-GCN: An interactional channel excitation-enhanced graph convolutional network for skeleton-based action recognition
Authors: Wang Shuxi , Pan Jiahui , Huang Binyuan , Liu Pingzhi , Li Zina , Zhou Chengju 
Published: April 2023

AbstractThanks to the development of depth sensors and pose estimation algorithms, skeleton-based action recognition has become prevalent in the computer vision community. Most of the existing works are based on spatio-temporal graph convolutional network frameworks, which learn and treat all spatial or temporal features equally, ignoring the interaction with channel dimension to explore different contributions of different spatio-temporal patterns along the channel direction and thus losing the ability to distinguish confusing actions with subtle differences. In this paper, an interactional channel excitation (ICE) module is proposed to explore discriminative spatio-temporal features of actions by adaptively recalibrating channel-wise pattern maps. More specifically, a channel-wise spatial excitation (CSE) is incorporated to capture the crucial body global structure patterns to excite the spatial-sensitive channels. A channel-wise temporal excitation (CTE) is designed to learn temporal inter-frame dynamics information to excite the temporal-sensitive channels. ICE enhances different backbones as a plug-and-play module. Furthermore, we systematically investigate the strategies of graph topology and argue that complementary information is necessary for sophisticated action description. Finally, together equipped with ICE, an interactional channel excited graph convolutional network with complementary topology (ICE-GCN) is proposed and evaluated on three large-scale datasets, NTU RGB+D 60, NTU RGB+D 120, and Kinetics-Skeleton. Extensive experimental results and ablation studies demonstrate that our method outperforms other SOTAs and proves the effectiveness of individual sub-modules. The code will be published at https://github.com/shuxiwang/ICE-GCN.
Perineural Invasion of Pancreatic Ductal Adenocarcinoma is Associated with Early Recurrence after Neoadjuvant Therapy Followed by Resection
Authors: Cha Da Eun , Yu Allen T. , Khajoueinejad Nazanin , Gleeson Elizabeth , Shaltiel Tali , Berger Yael , Macfie Rebekah , Golas Benjamin J. , Sarpel Umut , Labow Daniel M. , Hiotis Spiros , Cohen Noah A. 
Published: April 2023

AbstractBackgroundNeoadjuvant therapy (NAT) is increasingly utilized in the treatment of pancreatic ductal adenocarcinoma (PDAC). However, there are limited data on risk factors and patterns of recurrence after surgical resection. This study aimed to analyze timing and recurrence patterns of PDAC after NAT followed by curative resection.
MethodsThe medical charts of patients with PDAC treated with NAT followed by curative‐intent surgical resection at a single health system from January 1, 2012 to January 1, 2020 were retrospectively reviewed. Early recurrence was defined as recurrence within 12 months of surgical resection.Results91 patients were included and median follow up was 20.1 months. Recurrence occurred in 50 (55%) patients, with median recurrence free survival (RFS) of 11.9 months. Overall, 18 (36%) patients had local and 32 (64%) had distant recurrences. Median RFS and overall survival (OS) between local and distant recurrence were similar. Perineural invasion (PNI) and the presence of a T2 + tumor was significantly higher in recurrence group than in no recurrence group. PNI was a significant risk factor for early recurrence.ConclusionAfter NAT and surgical resection of PDAC, disease recurrence was common, with distant metastasis being the most common. PNI was significantly higher in the recurrence group.
An experimental study of proton implantation in olivine
Authors: Bissbort Thilo , Jiang Qinting , Becker Hans-Werner , Foteinou Varvara , Chakraborty Sumit 
Published: April 2023

AbstractImplantation of ions in minerals by high energy radiation is an important process in planetary and materials sciences. For example, the solar wind is a multi-ion flux that progressively modifies the composition and structure of near-surface domains in solar objects, like asteroids. A bombardment of a target by different elements like hydrogen (H) at various energies causes, among other things, the implantation of these particles in crystalline and amorphous materials. It is important to understand the mechanisms and features of this process (e.g., how much is implanted and retained), to constrain its contribution to the chemical budget of solar objects or for planning various material-science applications. Yet, there has been no detailed study on H implantation into olivine (e.g., the quantification of maximum retainable H), a major mineral in this context. We performed experiments on H implantation in San Carlos olivine at 10 and 20 keV with increasing fluences (up to 3×1018 at/cm2). Nanoscale H profiles that result from implantation were analyzed using Nuclear Resonance Reaction Analysis after each implantation to observe the evolution of the H distribution as a function of fluence. We observed that after a systematic growth of the characteristic, approximately Gaussian shaped, H profiles with increasing fluences, a maximum concentration at H ~ 20 at% is attained. The maximum concentration is approximately independent of ion energy, but the maximum penetration depth is a function of beam energy and is greater at higher energies. The shapes of the profiles as well as the maximum concentrations deviate from those predicted by currently available models and point to the need for direct experimental measurements. We compared the depth profiles with predictions by SRIM. Based on observations from this study, we were able to constrain the maximum retainable H in olivine as a function of ion energy.
Compressional behavior of the aragonite-structure carbonates to 6 GPa
Authors: Vidal-Daza Isaac , Sánchez-Navas Antonio , Hernández-Laguna Alfonso 
Published: April 2023

AbstractThe behaviors of aragonite (CaCO$$_3$$3), strontianite (SrCO$$_3$$3), cerussite (PbCO$$_3$$3), and witherite (BaCO$$_3$$3) at increasing pressure have been studied up to 6 GPa using density functional theory with plane waves. A parallelism of the orthorhombic carbonates with the closed-packed AsNi structure is considered in our analysis, being the CO$$_3^{2-}$$32-groups not centered in the interstice of the octahedron. The decomposition of the unit-cell volume into atomic contributions using the Quantum Theory of Atoms in Molecules has allowed the analysis of the bulk modulus in atomic contributions. The bulk, axes, interatomic distances, and atomic compressibilities are calculated. The largest compression is on theccrystallographic axis, and theclinear modulus has a linear function with the mineral bulk modulus ($$K_0$$K0). Many of the interatomic distances moduli of the alkaline earth (AE) carbonates show linear functions with the bulk modulus; however, the whole series (including cerussite) only gives linear functions when$$K_0$$K0is related either with theCCdistances modulus or the modulus of the distances of theCto the faces of the octahedron perpendicular toc. These last distances are the projections of the Metal–Oxygen (MO) distances to the center of the octahedron.$$K_{0AE}$$K0AEcarbonates also show linear functions with the atomic moduli of their cations. However, the whole series show a linear relation with the atomic modulus ofCatoms. Therefore, the whole series highlight the importance of theCatoms and their interactions in the mechanism of compression of the orthorhombic carbonate series.
Embeddability of centrosymmetric matrices capturing the double-helix structure in natural and synthetic DNA
Authors: Ardiyansyah Muhammad , Kosta Dimitra , Roca-Lacostena Jordi 
Published: April 2023

AbstractIn this paper, we discuss the embedding problem for centrosymmetric matrices, which are higher order generalizations of the matrices occurring in strand symmetric models. These models capture the substitution symmetries arising from the double helix structure of the DNA. Deciding whether a transition matrix is embeddable or not enables us to know if the observed substitution probabilities are consistent with a homogeneous continuous time substitution model, such as the Kimura models, the Jukes-Cantor model or the general time-reversible model. On the other hand, the generalization to higher order matrices is motivated by the setting of synthetic biology, which works with different sizes of genetic alphabets.
The rates of vaginal births after cesarean section have increased during the last decades: a nationwide register-based cohort study in Finland
Authors: Vaajala Matias , Liukkonen Rasmus , Ponkilainen Ville , Kekki Maiju , Mattila Ville M. , Kuitunen Ilari 
Published: April 2023

Abstract
Purpose
Epidemiological studies assessing the effects of previous cesarean section (CS) on subsequent delivery mode using large nationwide study populations. This study aims to calculate the incidence rates of trial of labors after cesarean section (TOLACs) and evaluate the annual rates of vaginal births after cesarean section (VBAC) during the last decades in Finland.

Methods
Data from the National Medical Birth Register (MBR) were used to evaluate incidence rates of VABC in the Finnish population (1998–2018). All nulliparous women having their first and second pregnancy during our study period, and with the mode of delivery identified in both of these pregnancies were included in this study. Absolute annual numbers and incidence rates for TOLACs, elective CS, and VBAC were calculated.

Results
The absolute number of TOLACs had an increasing trend during our study period, increasing up to 2118 TOLACs in 2016. The incidence rates for elective CS after the first CS had a decreasing trend, decreasing from 45% in 1999, to 28% in 2018. The absolute number of VBACs had an increasing trend during our study period, peaking in 2016 (1466 VBACs). The rates for VBAC remained relatively constant, ranging between 38 and 52%, but a slightly increasing trend at the end of the study period was seen.

Conclusion
Despite the increasing annual total number of deliveries with CS in the first pregnancy, the absolute numbers and rates for VBACs have increased towards the end of the study period in Finland. The epidemiology of TOLACs and VBACs should be better studied around the world, as with the rapidly increasing rate of CSs, these events are becoming more common challenges in health care.
Mid-term efficacy and postoperative wound management of laser hemorrhoidoplasty (LHP) vs conventional excisional hemorrhoidectomy in grade III hemorrhoidal disease: the twisting trend
Authors: Gambardella Claudio , Brusciano Luigi , Brillantino Antonio , Parisi Simona , Lucido Francesco Saverio , del Genio Gianmattia , Tolone Salvatore , Allaria Alfredo , Di Saverio Salomone , Pizza Francesco , Sturiale Alessandro , Docimo Ludovico 
Published: April 2023

Abstract
Purpose
Hemorrhoidal disease (HD) is a common condition, and several surgical techniques have been proposed to date without being able to achieve definitive consensus on their use and indications. Laser hemorrhoidoplasty (LHP) is a minimally invasive procedure for HD treatment determining the shrinkage of the hemorrhoidal piles by diode laser limiting the postoperative discomfort and pain. The aim of the current study was to evaluate the postoperative outcomes of HD patients undergoing LHP vs conventional Milligan-Morgan hemorrhoidectomy (MM).

Method
Postoperative pain, wound care management, symptoms’ resolution, patients’ quality of life, and length of return to daily activity of grade III symptomatic HD patients undergoing LHP vs MM were retrospectively evaluated. The patients were followed-up for recurrence of prolapsed hemorrhoid or symptoms.

Result
From January 2018 to December 2019, 93 patients received conventional Milligan Morgan as control group and 81 patients received laser hemorrhoidoplasty treatment using a 1470-nm diode laser. No significant intraoperative complications occurred in both groups. Laser hemorrhoidoplasty patients experienced lower postoperative pain score (p < 0.0001) and smoother wound management. After 25 ± 8 months follow-up, the recurrence of symptoms occurred in 8.1% after Milligan-Morgan and 21.6% after laser hemorrhoidoplasty (p < 0.05) with a similar Rorvik score (7.8 ± 2.6 in LHP group vs 7.6 ± 1.9 in MM group, p = 0.12).

Conclusion
LHP demonstrated high efficacy in selected HD patients guaranteeing lower postoperative pain, easier wound care, higher rate of symptoms resolution, and greater patient appreciation compared to MM, even though it had a higher recurrence rate. Larger comparative studies are needed to address this issue.
The influence of landscape characteristics on breeding bird dark diversity
Authors: Andersen Astrid Holm , Clausen Kevin Kuhlmann , Normand Signe , Vikstrøm Thomas , Moeslund Jesper Erenskjold 
Published: April 2023

AbstractThe exploration of factors and processes affecting biodiversity loss is central to nature management and wildlife conservation, but only recently has knowledge about the absence of species been recognized as a valuable asset to understand the current biodiversity crisis. In this paper, we explore the dark diversity (species that belong to a site-specific species pool but that are not locally present) of breeding birds in Denmark assessed through species co-occurrence patterns. We apply a nation-wide atlas survey of breeding birds (with a 5 × 5 km resolution), to investigate how landscape characteristics may influence avian diversity, and whether threatened and near threatened species are more likely to occur in dark diversity than least concern (LC) species. On average, the dark diversity constituted 41% of all species belonging to the site-specific species pools and threatened and near-threatened species had a higher probability of belonging to the dark diversity than least concern species. Habitat heterogeneity was negatively related to dark diversity and the proportional cover of intensive agriculture positively related, implying that homogeneous landscapes dominated by agricultural interests led to more absent avian species. Finally, we found significant effects of human disturbance and distance to the coast, indicating that more breeding bird species were missing when human disturbance was high and in near-coastal areas. Our study provides the first attempt to investigate dark diversity among birds and highlights how important landscape characteristics may shape breeding bird diversity and reveal areas of considerable species impoverishment.
Increased summer temperature is associated with reduced calf mass of a circumpolar large mammal through direct thermoregulatory and indirect, food quality, pathways
Authors: Holmes Sheila M. , Dressel Sabrina , Morel Julien , Spitzer Robert , Ball John P. , Ericsson Göran , Singh Navinder J. , Widemo Fredrik , Cromsigt Joris P. G. M. , Danell Kjell 
Published: April 2023

AbstractClimate change represents a growing ecological challenge. The (sub) arctic and boreal regions of the world experience the most rapid warming, presenting an excellent model system for studying how climate change affects mammals. Moose (Alces alces) are a particularly relevant model species with their circumpolar range. Population declines across the southern edge of this range are linked to rising temperatures. Using a long-term dataset (1988–1997, 2017–2019), we examine the relative strength of direct (thermoregulatory costs) and indirect (food quality) pathways linking temperature, precipitation, and the quality of two important food items (birch and fireweed) to variation in moose calf mass in northern Sweden. The direct effects of temperature consistently showed stronger relationships to moose calf mass than did the indirect effects. The proportion of growing season days where the temperature exceeded a 20 °C threshold showed stronger direct negative relationships to moose calf mass than did mean temperature values. Finally, while annual forb (fireweed) quality was more strongly influenced by temperature and precipitation than were perennial (birch) leaves, this did not translate into a stronger relationship to moose calf weight. The only indirect path with supporting evidence suggested that mean growing season temperatures were positively associated with neutral detergent fiber, which was, in turn, negatively associated with calf mass. While indirect impacts of climate change deserve further investigation, it is important to recognize the large direct impacts of temperature on cold-adapted species.