bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code
Authors: Kasban H. , Hashima Sherief , Nassar Sabry , Mohamed Ehab Mahmoud , El‐Bendary Mohsen A. M. 
Published: October 2022

AbstractDue to the importance of both rate‐less digital fountain codes and Multi‐Input Multi‐Output (MIMO) schemes in Fifth and Sixth Generation (5G/6G) wireless networks, this paper investigates enhancing the performance of MIMO‐Orthogonal Frequency Division Multiplexing (MIMO‐OFDM) based system by employing the rate‐less fountain codes. The rate‐less codes, such as the Tornado codes and Raptor codes, have a flexible code rate that differs from the classical channel coding schemes. This paper uses Raptor code to study the MIMO system's performance with the rate‐less codes over different wireless communications channels. The proposed MIMO‐fountain code‐based system has been tested over the various wireless communication channel conditions concerning the varied Frequency Doppler (FD). In the proposed rate‐less wireless communication system, multiple interleaving techniques and equalizers are used to improve its performance. Computer‐based simulation experiments are assigned to evaluate the MIMO‐fountain code system using the different data transmission scenarios. Simulation results confirm the superiority of the presented wireless rate‐less system compared to fixed‐rate wireless systems in terms of Bit Error Rate (BER) and throughput.
Large signal stability criterion of AC–DC hybrid microgrids with constant power loads considering reference current limitation
Authors: Liu Xinbo , Li Zongyang , Song Xiaotong , Zhou Jinghua , Qu Yaxin 
Published: October 2022

AbstractIslanded AC–DC hybrid microgrids composed of new energy sources, constant power loads and energy storage system are typical non‐linear systems, and guaranteeing large signal stability is a key issue. In this paper, the non‐linear model of islanded AC–DC hybrid microgrids is established, and large signal stability criteria are obtained. Considering reference current limitation of the energy DC–AC converter, the derived large signal stability criterion gives important constraints on the constant power loads power, the power of energy storage unit, DC bus voltage, the inductor and equivalent resistance of the AC filter, DC capacitor, the proportional parameter of the inner current controller and the maximum instantaneous power of the DC–AC converter. The paper is summarized as follows. Firstly, the equivalent model of the AC–DC hybrid microgrids in DQ rotating frame is established. Then based on mixed potential theory, the mixed potential model is constructed, and large signal stability criterion is derived and optimized considering the reference current limitation of the DC–AC converter. Finally, the presented criterion is verified by simulation and experimental results.
A wave of support? A natural experiment on how the COVID-19 pandemic affected the popularity of a basic income
Authors: Van Hootegem Arno , Laenen Tijs 
Published: October 2022

AbstractAlthough a basic income (BI) has already been widely debated, the COVID-19 crisis further intensified the discussion about this periodic cash payment that is unconditionally delivered to all. However, it remains unclear whether the crisis spurred a wave of public support for its introduction. To investigate this, we aim to answer two research questions: (1) How did support for a BI evolve in reaction to the COVID-19 crisis? and (2) To what extent did the evolution in support differ across regional contexts and social groups with varying levels of deprivation? We rely on a natural experiment by analysing data from the Belgian National Elections Study that was collected both before and during the pandemic. The results indicate an increase in support for a BI due to the pandemic, although it seems short lived and not necessarily specific to a BI. Importantly, however, the increase in popularity is only observable in the high-unemployment French-speaking region of Belgium and among relatively deprived groups.
Ovarian cancer cell fate regulation by the dynamics between saturated and unsaturated fatty acids
Authors: Zhao Guangyuan , Tan Yuying , Cardenas Horacio , Vayngart David , Wang Yinu , Huang Hao , Keathley Russell , Wei Jian-Jun , Ferreira Christina R. , Orsulic Sandra , Cheng Ji-Xin , Matei Daniela 
Published: October 2022

Fatty acids are an important source of energy and a key component of phospholipids in membranes and organelles. Saturated fatty acids (SFAs) are converted into unsaturated fatty acids (UFAs) by stearoyl Co-A desaturase (SCD), an enzyme active in cancer. Here, we studied how the dynamics between SFAs and UFAs regulated by SCD impacts ovarian cancer cell survival and tumor progression. SCD depletion or inhibition caused lower levels of UFAs vs. SFAs and altered fatty acyl chain plasticity, as demonstrated by lipidomics and stimulated Raman scattering (SRS) microscopy. Further, increased levels of SFAs resulting from SCD knockdown triggered endoplasmic reticulum (ER) stress response with brisk activation of IRE1α/XBP1 and PERK/eIF2α/ATF4 axes. Disorganized ER membrane was visualized by electron microscopy and SRS imaging in ovarian cancer cells in which SCD was knocked down. The induction of long-term mild ER stress or short-time severe ER stress by the increased levels of SFAs and loss of UFAs led to cell death. However, ER stress and apoptosis could be readily rescued by supplementation with UFAs and reequilibration of SFA/UFA levels. The effects of SCD knockdown or inhibition observed in vitro translated into suppression of intraperitoneal tumor growth in ovarian cancer xenograft models. Furthermore, a combined intervention using an SCD inhibitor and an SFA-enriched diet initiated ER stress in tumors growing in vivo and potently blocked their dissemination. In all, our data support SCD as a key regulator of the cancer cell fate under metabolic stress and point to treatment strategies targeting the lipid balance.
The hurtfulness of slurs, nouns and adjectives as group labels
Authors: Hogeweg Lotte , Neuleman Monique 
Published: October 2022

Abstract
Slurs are pejorative terms for groups of people, relating to for example their nationality, their sexual
orientation, etc. While there is a lot of discussion about slurs, they are typically characterized in relation to a neutral noun.
In this article we will explore this distinction between neutral and offensive group labels. By means of a small experiment, we
show that slurs are indeed considered to be more hurtful than their corresponding ‘neutral’ nouns, but that at least some of these
nouns themselves are experienced as more hurtful than adjective noun combinations. We suggest that the results are in line with
analyses in which the degree to which a term is considered to be hurtful is based on its inherent (i.e. conventionalized)
properties, as well as the context in which it is used. We suggest that such analyses could be extended to nouns, such that terms
can be neutral or non-neutral to various degrees.
Claiming common ground with utterance-final particle hoor in Dutch
Authors: de Hoop Helen , Mulder Gijs 
Published: October 2022

Abstract
In this article we conduct a pragmatic analysis of the Dutch utterance-final particle hoor (lit.
‘hear’). Apparently, hoor has contradictory uses. It ex-presses politeness (involvement, togetherness), but it can
also contribute to the face-threatening force of an utterance. We argue that there is a core meaning that all uses share, which is
that by adding hoor, speakers claim a proposition at issue to be part of the common ground. This core meaning
will be shown to account for hoor’s key characteristics. Hoor expresses involvement and is often
attached to speech acts that are intrinsically polite, such as apologizing and giving compliments. Also, while
hoor never occurs in interrogative sentences, it can be used with a certain type of directive speech acts,
namely those that are in the interest of the hearer or are presented as having shared interests.
A nanosyntactic approach to Dutch deadjectival verbs
Authors: Wyngaerd Guido Vanden , Clercq Karen De , Caha Pavel 
Published: October 2022

AbstractThere are three ways of deriving verbs in Dutch: through zero marking, through suffixation, and through prefixation. We focus on prefixed deadjectival verbs, contrasting two views. According to the first view, prefixed verbs are left-headed: the prefix is responsible for the change in category, i.e. [Vver [Abreed]]. The second view holds that prefixed verbs are right-headed, and involve a zero verbalizing suffix, i.e. [Vver [V[Abreed] ∅]]. We argue in this paper for a mixed, nanosyntactic, approach. We adoptRamchand’s (2008)decomposition of the verb and argue that the prefix spells out part of the verbal structure and the verbal root spells out another part.
Social class, economic and political grievances and radical left voting: The role of macroeconomic performance
Authors: Ramaekers Marlou , Karremans Twan , Lubbers Marcel , Visser Mark 
Published: October 2022

ABSTRACT
The classic gap between lower and higher social classes in their likelihood to vote for radical left parties (RLPs) persists to this day. Prior studies showed that economic and political grievances predict support for the radical left, but they largely neglected to address whether the working class is more likely to vote for RLPs because they are economically and politically dissatisfied. This study, therefore, examines the explanatory role of economic and political grievances. It also examines whether the class cleavage in RLP support depends on a country's economic performance in terms of wealth, unemployment and income inequality. European Social Survey data on 19 countries between 2002 and 2018 are analysed using three-level logistic regression models. The results replicate that people in lower social classes are more likely to vote for RLPs than those in higher ones. They do so because they are more dissatisfied with the economy, democracy and, particularly, income inequality. Against expectations, class voting for the radical left is not conditional on macroeconomic performance. Yet, RLPs turn out to be more electorally successful as a result of economic and political grievances in times of economic prosperity, suggesting that feelings of relative deprivation spur radical left voting.
DyStSLAM: an efficient stereo vision SLAM system in dynamic environment
Authors: Li Xing , Shen Yehu , Lu Jinbin , Jiang Quansheng , Xie Ou , Yang Yong , Zhu Qixin 
Published: October 2022

Abstract
Simultaneous localization and mapping (SLAM) is the basis for many robotic applications. Most SLAM algorithms are based on the assumption that the scene is static. In real-world applications, moving objects are inevitable, which will greatly impact the ego-pose estimation accuracy. This paper presents DyStSLAM, a visual SLAM system with a stereo configuration that can efficiently identify moving objects and accomplish dynamic data association. First of all, DyStSLAM extracts feature points, estimates the disparity map, and performs instance segmentation simultaneously. Then, the obtained results are combined to estimate the motion confidence and discriminate between moving objects and static ones. A confidence based matching algorithm is proposed to associate dynamic objects and estimate the pose of each moving object. At the same time, static objects are used to estimate the pose of the camera. Finally, after nonlinear optimization, a sparse point cloud map of both static background and dynamic objects is constructed. Compared with ORB-SLAM2, the proposed method outperforms by 31% for absolute trajectory error on the KITTI dataset.
Spin and polarization: a new direction in relativistic heavy ion physics
Authors: Becattini Francesco 
Published: October 2022

Abstract
Since the first evidence of a global polarization of Λ hyperons in relativistic nuclear collisions in 2017, spin has opened a new window in the field, both at experimental and theoretical level, and an exciting perspective. The current state of the field is reviewed with regard to the theoretical understanding of the data, reporting on the most recent achievements and envisioning possible developments. The intriguing connections of spin physics in relativistic matter with fundamental questions in quantum field theory and applications in the non-relativistic domain are discussed.
Electromagnetic actuator design for distributed stiffness
Authors: Zuliani Fabio , Paik Jamie 
Published: October 2022

Abstract
Origami robots characterized by rigid plates linked together with flexible joints have inherent compliance and large deformations. Their low-profile design and folding mechanical transmissions provide substantial force and torque, especially for wearables and human-interactive devices. The current major limitation in the field is the need for embeddable dynamic actuation systems that produce actuation frequencies similar to human motion. In this study, we propose a novel low-profile printable electromagnetic actuator that can be integrated into thin large robotic surfaces made of rigid panels and into the streamlined pushbutton manufacturing process. We use already existing variable stiffness joints to demonstrate the scalability and distributable properties of the proposed actuation system on a locally controllable variable-stiffness distributed surface.
Field quality and surface resistance studies of a superconducting REBa2Cu3O7−x
—Cu hybrid coating for the FCC beam screen
Authors: Telles G T , Romanov A , Calatroni S , Granados X , Puig T , Gutierrez J 
Published: October 2022

Abstract
To ensure beam stability in the future circular collider study of the European Organization for Nuclear Research, RE(=Y, Gd, Eu)Ba2Cu3O

7
−
x

high-temperature superconductor was proposed as a low-surface impedance coating for its beam screen. Unfortunately, persistent currents in the superconductor will degrade the magnetic field homogeneity inside the beam chamber, endangering the stability of the beam trajectory. To counteract this effect, we have explored the possibility of using a highly conductive hybrid coating made of Cu and REBa2Cu3O

7
−
x

. This decreases the surface impedance when compared to that of pure copper, while maintaining high magnetic field quality inside the beam screen chamber. This work formulates guidelines for hybrid coating geometries to comply with the field quality criterion of a circular accelerator during operation with dipole magnets by means of finite elements numerical analysis. We produced hybrid coating samples with compliant geometries via photolithography. Scanning Hall microscopy and radio-frequency characterization have given the first experimental confirmation that these hybrid coatings offer high field quality and present a surface resistance lower than that of copper for the beam screen of the future circular hadron collider. The excellent agreement shown between experimental results and simulations validates that the numerical analysis performed throughout this work can be used as a prediction tool for future proposed geometries.
Dynamic response of torsional waves in an anisotropic infinite cylinder with finite thickness
Authors: Kumawat Sunita , Kumar Vishwakarma Sumit 
Published: October 2022

Abstract
The transference of torsional surface waves in an infinite triclinic cylinder has been investigated. The equation of motion has been expressed in the cylindrical coordinate system, and by the means of the separation of variables, the displacement has been derived in terms of the Bessel function of the first kind and second kind. With the use of suitable boundary conditions, the dispersion equation has been deduced in a closed-form. Particular cases have been derived for monoclinic, orthotropic, transversely isotropic(precisely transtropic), and isotropic medium. The continuum comparision of each one of the cases have been discussed in details. In order to exhibit the present findings, 2D and 3D graphs have been plotted for phase velocity against wave number to study the impact of elastic coefficients and the ratio of radii of the cylinder. In the end, phase velocity for different media has been compared numerically. The study may be useful to construct torsional wave sensors in predicting the extent of damage during an earthquake by means of artificial explosions.
Validation of a non-invasive, real-time, human-in-the-loop model of intracortical brain-computer interfaces
Authors: Awasthi Peeyush , Lin Tzu-Hsiang , Bae Jihye , Miller Lee E , Danziger Zachary C 
Published: October 2022

Abstract

Objective. Despite the tremendous promise of invasive brain-computer interfaces (iBCIs), the associated study costs, risks, and ethical considerations limit the opportunity to develop and test the algorithms that decode neural activity into a user’s intentions. Our goal was to address this challenge by designing an iBCI model capable of testing many human subjects in closed-loop. Approach. We developed an iBCI model that uses artificial neural networks (ANNs) to translate human finger movements into realistic motor cortex firing patterns, which can then be decoded in real time. We call the model the joint angle BCI, or jaBCI. jaBCI allows readily recruited, healthy subjects to perform closed-loop iBCI tasks using any neural decoder, preserving subjects’ control-relevant short-latency error correction and learning dynamics. Main results. We validated jaBCI offline through emulated neuron firing statistics, confirming that emulated neural signals have firing rates, low-dimensional PCA geometry, and rotational jPCA dynamics that are quite similar to the actual neurons (recorded in monkey M1) on which we trained the ANN. We also tested jaBCI in closed-loop experiments, our single study examining roughly as many subjects as have been tested world-wide with iBCIs (n = 25). Performance was consistent with that of the paralyzed, human iBCI users with implanted intracortical electrodes. jaBCI allowed us to imitate the experimental protocols (e.g. the same velocity Kalman filter decoder and center-out task) and compute the same seven behavioral measures used in three critical studies. Significance. These encouraging results suggest the jaBCI’s real-time firing rate emulation is a useful means to provide statistically robust sample sizes for rapid prototyping and optimization of decoding algorithms, the study of bi-directional learning in iBCIs, and improving iBCI control.
Zeno crossovers in the entanglement speed of spin chains with noisy impurities
Authors: Chaudhari Abhijit P , Kelly Shane P , Valencia-Tortora Riccardo J , Marino Jamir 
Published: October 2022

Abstract
We use a noisy signal with finite correlation time to drive a spin (dissipative impurity) in the quantum XY spin chain and calculate the dynamics of entanglement entropy (EE) of a bipartition of spins, for a stochastic quantum trajectory. We compute the noise averaged EE of a bipartition of spins and observe that its speed of spreading decreases at strong dissipation, as a result of the Zeno effect. We recover the Zeno crossover and show that noise averaged EE can be used as a proxy for the heating and Zeno regimes. Upon increasing the correlation time of the noise, the location of the Zeno crossover shifts at stronger dissipation, extending the heating regime.
Concentration of fecal coliforms in marine waters using satellite images in the vicinity of Pucusana. Bay, Peru.
Authors: Palma-Gongora Y-A , Zuta-Medina F-V , Gomez-Cunya L-A 
Published: October 2022

Abstract
Water quality monitoring in coastal areas is challenging due to cost and time constraints. Identifying and selecting sampling sites accurately and effectively is crucial for efficient monitoring. The need for efficient monitoring of marine waters has led to exploring the use of remote sensing as one helpful alternative. Remote sensing is practical in several applications based on pattern recognition and information processing of large terrestrial and aquatic surface areas. Collected information is processed with various image processing techniques to identify objects such as microorganisms. Fecal coliforms are microorganisms that are indicators of sanitary quality and are present in human and animal wastes discharged into water bodies reaching coastal regions. The present study estimated the presence of fecal coliforms as an indicator of contamination in coastal marine waters. Satellite data from two sensors, Landsat 7 ETM+ and Landsat 8 OLI, were used to evaluate the reflectance of fecal coliforms in marine waters. Then, statistical analysis and four regression models were tested to establish a functional correlation between the spectral bands and historical in situ fecal coliform measurement. In this research, satellite imagery in the vicinity of Pucusana Bay helped estimate the concentration of fecal coliforms in marine waters. As a result, a significant relationship was found between the shortwave infrared band splitting (SWIR 2) with the blue band and fecal coliforms presence. The relationship was used to estimate coliform concentration from the reflectance of the aquatic surface in Pucusana Bay. Finally, spatial distribution maps of fecal coliform concentrations were generated to compare the increase of these microorganisms over different years in the area. The methodology and results can be calibrated to other water body locations where fecal coliform is a concern.