bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early functional connectivity alterations in contralesional motor networks influence outcome after severe stroke: a preliminary analysis
Authors: Braaß Hanna , Gutgesell Lily , Backhaus Winifried , Higgen Focko L. , Quandt Fanny , Choe Chi-un , Gerloff Christian , Schulz Robert 
Published: July 2023

AbstractConnectivity studies have significantly extended the knowledge on motor network alterations after stroke. Compared to interhemispheric or ipsilesional networks, changes in the contralesional hemisphere are poorly understood. Data obtained in the acute stage after stroke and in severely impaired patients are remarkably limited. This exploratory, preliminary study aimed to investigate early functional connectivity changes of the contralesional parieto-frontal motor network and their relevance for the functional outcome after severe motor stroke. Resting-state functional imaging data were acquired in 19 patients within the first 2 weeks after severe stroke. Nineteen healthy participants served as a control group. Functional connectivity was calculated from five key motor areas of the parieto-frontal network on the contralesional hemisphere as seed regions and compared between the groups. Connections exhibiting stroke-related alterations were correlated with clinical follow-up data obtained after 3–6 months. The main finding was an increase in coupling strength between the contralesional supplementary motor area and the sensorimotor cortex. This increase was linked to persistent clinical deficits at follow-up. Thus, an upregulation in contralesional motor network connectivity might be an early pattern in severely impaired stroke patients. It might carry relevant information regarding the outcome which adds to the current concepts of brain network alterations and recovery processes after severe stroke.
Nanoliposomes containing three essential oils from the Artemisia genus as effective larvicides against Aedes aegypti and Anopheles stephensi
Authors: Sanei-Dehkordi Alireza , Ghasemian Abdolmajid , Zarenezhad Elham , Qasemi Hajar , Nasiri Mahdi , Osanloo Mahmoud 
Published: July 2023

AbstractAedes aegypti and Anopheles stephensi have challenged human health by transmitting several infectious disease agents, such as malaria, dengue fever, and yellow fever. Larvicides, especially in endemic regions, is an effective approach to the control of mosquito-borne diseases. In this study, the composition of three essential oil from the Artemisia L. family was analyzed by Gas Chromatography–Mass Spectrometry. Afterward, nanoliposomes containing essential oils of A. annua, A. dracunculus, and A. sieberi with particle sizes of 137 ± 5, 151 ± 6, and 92 ± 5 nm were prepared. Besides, their zeta potential values were obtained at 32 ± 0.5, 32 ± 0.6, and 43 ± 1.7 mV. ATR-FTIR analysis (Attenuated Total Reflection-Fourier Transform InfraRed) confirmed the successful loading of the essential oils. Moreover, The LC50 values of nanoliposomes against Ae. aegypti larvae were 34, 151, and 197 µg/mL. These values for An.stephensi were obtained as 23 and 90, and 140 µg/mL, respectively. The results revealed that nanoliposomes containing A. dracunculus exerted the highest potential larvicidal effect against Ae. aegypti and An. stephensi, which can be considered against other mosquitoes.
Does Lexical Stress Pattern Affect Learning and Producing New Words in Greek for Children With Cochlear Implants?
Authors: Adamidou Christina , Okalidou Areti , Fourakis Marios , Printza Athanasia , Kyriafinis Georgios 
Published: July 2023

Purpose:
Τhe lexical stress pattern (trochaic vs. iambic) may affect various aspects of word learning and word production in children with cochlear implants (CIs). This study aimed to investigate lexical stress effects in word learning by Greek-speaking children with CIs.

Method:
A word learning paradigm, consisting of a word production and a word identification task, was used. A test list of eight pairs of disyllabic nonwords with identical phonological composition and contrasting lexical stress (eight trochaic and eight iambic), along with their referent pictured objects, was constructed and administered to 22 Greek-speaking children with CIs (ages 4;6–12;3 [years;months]) with normal nonverbal IQ and to 22 age-matched controls with normal hearing (NH) and no other difficulties.

Results:
Overall, children with CIs exhibited lower performance than their hearing peers in all word-learning tasks, regardless of lexical stress pattern. Specifically, they identified significantly fewer words and exhibited significantly lower accuracy in word production than those of the controls. In the group with CIs, lexical stress pattern affected their production of words but not their word identification. Children with CIs showed more accurate production of iambic than trochaic words, a fact attributed to better vowel production. Yet, production of stress was less accurate for iambic than for trochaic words. Μoreover, stress assignment of iambic words was highly correlated with speech and language tests in children with CIs.

Conclusions:
Greek children with CIs exhibited lower performance in the word-learning task administered than children with NH did. In addition, the performance of children with CIs indicated a dissociation between the perception and production mechanisms and revealed complex relations between the segmental and prosodic aspects of words. Preliminary findings suggest that stress assignment in iambic words can serve as an indicator of speech and language growth.
Mechanical model analysis and reliability design approach of Quartz Flexible Accelerometer under fractured state
Authors: Xiao Tingyu , Zhang Chunxi , Song Lailiang , Ran Longjun , Huang Wanying 
Published: July 2023

AbstractCurrently, the Quartz Flexible Accelerometer (QFA) mounted for the applications working in high acceleration environment are suffering from the fracture of the flexible beams under external acceleration shock. This paper presents the mechanical model and reliability design approach of QFA to maintain the measuring ability under a fractured state. The structural parameters changed significantly in the mechanical model under a fractured state compared to those in the original model. A modified structure to maintain the measuring ability of QFA under a fractured state is designed with the reference of the sensitive module in Electrostatic Suspended Accelerometer (ESA). The corresponding close‐loop system is corrected and discretised to ensure the stability requirements of the mechanical model. A static experiment is conducted to prove the effectiveness of the proposed model by a prototype QFA with completely fractured flexible beams. The result shows helpful on the preliminary research for QFA with the similar sensitive structure to ESA.
A chipless light switch for smart‐homes
Authors: Almansouri Abdullah S. 
Published: July 2023

AbstractThe limited and inconvenient functionality of conventional light switches is out of pace with current advancements in wireless sensors. A chipless RFID light switch (CLS) that is passive, battery‐free and relocatable and maintains the convenience of having physical buttons for controlling lightbulbs or other electrical devices is introduced. These characteristics have been achieved by attaching single‐pole‐single‐through toggle switches to the edges of radio frequency spiral resonators. The status of the switches activates or deactivates the resonators, allowing the CLS tag to passively communicate the status of the switches. A CLS tag with two ID resonators (used for tag identifications), and two measurement resonators [MRs] (connected with switches and used to communicate the status of the switches) was designed and fabricated using a 1‐mm‐thick FR4 substrate. Measurement results showed resonant frequencies at 1115 and 1220 MHz corresponding to the ID resonators and frequencies at 848 and 971 MHz corresponding to the MRs. Turning the switches OFF and ON successfully activated and deactivated the MRs.
Modified active disturbance rejection control scheme for systems with time delay
Authors: Jugo Josu , Elejaga Ander , Echevarria Pablo 
Published: July 2023

AbstractActive disturbance rejection control (ADRC) has been gaining attention in recent years and has shown its performance in multiple applications including non‐linear ones, without the need of accurate models. Despite the good results of this technique, time delay can deteriorate the performance of ADRC, limiting its application. Here, the effect of time delay on the stability of a linear ADRC is analysed, using an alternative mathematical description, and a new effective design technique, based on a modified ADRC scheme, is proposed to overcome the delay effect while maintaining the disturbance rejection properties of the ADRC. An experimental example is discussed considering a system with low damped mechanical resonances, showing good results using the proposed technique.
Novel bidirectional universal 1‐phase/3‐phase‐input unity power factor differential AC/DC converter
Authors: Sarnago Héctor , Lucía Óscar , Chhawchharia Saransh , Menzi David , Kolar Johann W. 
Published: July 2023

AbstractA common 400 V dc bus for industrial motor drives advantageously allows the use of high‐performance 600 V power semiconductor technology in the inverter drive converter stages and to lower the rated power of the supplying rectifier system. Ideally, this supplying rectifier system features unity power factor operation, bidirectional power flow and nominal power operation in the three‐phase and the single‐phase grid. This paper introduces a novel bidirectional universal single‐/three‐phase‐input unity power factor differential ac‐dc converter suitable for the above mentioned requirements. The basic operating principle and conduction states of the proposed topology are derived and discussed in detail. Then, the main power component voltage and current stresses are determined and simulation results in PLECS are provided. The concept is verified by means of experimental measurements conducted in both three‐phase and single‐phase operation with a 6 kW prototype system employing a switching frequency of 100 kHz and 1200 V SiC power semiconductors.
Distributed robust operation strategy of multi‐microgrid based on peer‐to‐peer multi‐energy trading
Authors: Gao Jin , Shao Zhenguo , Chen Feixiong , Chen Yuchao , Lin Yongqi , Deng Hongjie 
Published: July 2023

AbstractIn microgrid (MG) systems, traditional centralised energy trading models can lead to issues such as low energy efficiency due to unstable energy supply and lack of flexibility. Peer‐to‐peer (P2P) trading models have been widely used due to their advantages in promoting the sustainable development of renewable energy and reducing energy trading costs. However, P2P multi‐energy trading requires mutual agreements between two microgrids (MGs), and the uncertainties of renewable energy and load affects energy supply security. To address these issues, this article proposed a distributed robust operation strategy based on P2P multi‐energy trading for multi‐microgrid (MMG) systems. Firstly, a two‐stage robust optimisation (TRO) method was adopted to consider the uncertainties of P2P multi‐energy trading between MGs, which reduced the conservatism of robust optimisation (RO). Secondly, a TRO model for P2P multi‐energy trading among MGs was established based on the Nash bargaining theory, where each MG negotiates with others based on their energy contributions in the cooperation. Additionally, a distributed algorithm was used to protect the privacy of each MG. Finally, the simulation results based on three MGs showed that the proposed approach can achieve a fair distribution of cooperative interests and effectively promote cooperation among MGs.
Überblick über Digitale Gesundheitsanwendungen mit Fokus Depression
Authors: Haaf Raoul , Machleid Felix , Köhler Stephan 
Published: July 2023

ZUSAMMENFASSUNGDigitale Gesundheitsanwendungen (DiGA) haben das Potenzial, durch ihre Niedrigschwelligkeit und schnelle Verfügbarkeit einen wertvollen Beitrag zur Verbesserung der Versorgungssituation von Patienten zu leisten. Gleichzeitig stellen die hochdynamischen Entwicklungen in diesem Bereich Patienten, Anwendungshersteller, das Gesundheitssystem und Therapeuten vor große Herausforderungen. Ein informierter Umgang mit digitalen Gesundheitsdiensten ist dabei eine wichtige Voraussetzung für die erfolgreiche Etablierung dieser Technologien in der Regelversorgung.Der Artikel gibt einen Überblick über das aktuelle Verordnungsverfahren, Inhalte und Evidenz der verfügbaren DiGA mit dem Schwerpunkt Depression und schließt mit einigen Überlegungen zu relevanten ethischen Fragestellungen und praktischem Einsatz.
Commercially Available Prenatal Vitamins Do Not Meet American College of Obstetricians and Gynecologists Nutritional Guidelines
Authors: Cai Fei , Young Benjamin K. , Mccoy Jennifer A. 
Published: July 2023

Objective This study aimed to evaluate the reported amount of the American College of Obstetricians and Gynecologists (ACOG) recommended nutrients in commercially available, over-the-counter prenatal vitamins (PNVs) in the United States, to assess their adequacy compared with the ACOG guidelines, and to compare these supplements by cost.
Study Design The top 30 online Amazon and Google shopping items found using “prenatal vitamins” in September 2022 were included for analysis if they included the words “prenatal” and “vitamin” in the label and contained multiple nutrients. Duplicates between Amazon and Google were excluded as well as vitamins that did not list all ingredients. The reported amounts of 11 key nutrients, as recommended by the ACOG, for each product were recorded, as well as supplemental form and cost per 30-day supply. A cost analysis was done of PNVs that met the ACOG recommendations for the highlighted nutrients compared with those that did not. Five out of the 11 key nutrients (folic acid, iron, docosahexaenoic acid, vitamin D, and calcium) were specifically highlighted, as deficiencies in these nutrients are known to correlate with significant clinical outcomes in pregnancy.
Results A total of 48 unique PNVs were included for final analysis. Of these PNVs, none were compliant with suggested amounts of all five key vitamins and nutrients. No products met daily recommendations for calcium. Only five PNVs were compliant with recommendations with 4/5 key nutrients. Of note, 27% of PNVs did not have the recommended amount of folic acid (13/48). The median cost of PNVs that were not compliant with the four nutrients mentioned above was $18.99 (interquartile range [IQR]: $10.00–30.29), which was not statistically different from the median cost of the PNVs that did meet compliance with the four nutrients, which was $18.16 (IQR: $9.13–26.99), p = 0.55.
Conclusion There were significant variations in the level of nutrients and cost of commercially available, over-the-counter PNVs in the United States. This raises concern that there should be more regulation of PNVs.
Key Points
Gastrointestinal Subepithelial Lesions: A Review
Authors: Pal Sandip , Hodgar Digvijay 
Published: July 2023

AbstractSubmucosal lesions, also known as subepithelial lesions, are often encountered during endoscopy of the gastrointestinal tract. Most of the lesions are asymptomatic and can be diagnosed by routine endoscopic ultrasonography. Few lesions like gastrointestinal submucosal tumors (GIST) and leiomyoma require biopsy/fine-needle aspiration cytology (FNAC) for differentiation. Lesions like neuroendocrine tumors can be diagnosed by deep endoscopic biopsy as they originate from the inner mucosal layer. Management depends on the size and layer of origin of the lesion. Smaller lesions can be removed by endoscopic procedures and bigger lesions by surgery. Smaller lesions can be safely surveilled.
Endoscopic Management of Pediatric Foreign Body Ingestions and Food Bolus Impactions: A Retrospective Study from a Tertiary Care Center
Authors: Shafiq Syed , Devarbhavi Harshad 
Published: July 2023

Abstract
Background Foreign body (FB) ingestion is a common pediatric problem with the majority of these occurring in children younger than 3 years. Management varies depending on the age of the patient, ingested object(s), its location along the digestive tract, and the available expertise. We aim to report our experience with endoscopic management of FB ingestions in children (<18 years).
Materials and Methods We retrospectively reviewed and analyzed endoscopic and medical records from our hospital database of all pediatric patients (<18 years) who presented with FB ingestion between January 2011 and December 2021.
Results Our analysis included a total of 368 patients. FB ingestions and/or food bolus impactions were noted in 242 and 11 children, respectively while 115 (31.25%) had spontaneously passed off FB from the digestive tract. Most common FB was coin (28.5%) followed by animal bones (26.2%). Endoscopic management of FBs and food bolus impaction was successful in 247 children (97.63%), while endoscopic FB retrieval failed in 6 children including 1 with fish bone and 5 with button batteries. A total of 9 out of 11 children with food bolus impaction had underlying esophageal pathology, the commonest being corrosive stricture (n = 7). No mortality related to endoscopic intervention was reported.
Conclusions Endoscopic retrieval of ingested FBs and food bolus impaction in children is a safe and effective approach when performed by experienced endoscopists and is associated with a high success rate and a lower incidence of complications with reduced hospital stay.
The heterogeneous effects of social support on the adoption of Facebook’s vaccine profile frames feature
Authors: Rakocz Nadav , Ernala Sindhu , Nir Israel , Weinsberg Udi , Bahl Amit 
Published: July 2023

AbstractAchieving widespread COVID-19 vaccine acceptance is a key step to global recovery from the pandemic, but hesitancy towards vaccination remains a major challenge. Social proof, where a person’s attitude towards vaccination is influenced by their belief in the attitudes of their social network, has been shown to be effective for making in-roads upon hesitancy. However, it is not easy to know the attitudes of one’s network, nor reliably signal one’s own feelings towards COVID-19 vaccines, minimizing the impact of the social influence channel. To address this issue, Facebook launched a feature that enables users to overlay a message indicating that they support vaccination upon their profile picture. To raise awareness of these vaccine profile frames (VPFs), users received a variety of promotional messages from Facebook, a subset of which contained the social context of friends who had already adopted the frame. Leveraging this variation in promotional messaging, we analyzed the adoption pattern of VPFs in the US to determine the most effective strategies to drive VPF usage. We found that adoption is driven by a pattern of complex diffusion, where multiple exposures to the adoption decisions of others increased VPF uptake, and that there is substantial heterogeneity in the adoption response associated with prior vaccine beliefs, whether the promotion had a social component and closeness of the tie included in social promotions. Specifically, we observed resistance to adoption correlated with an aversion to follow authoritative health pages and stronger adoption effects from social promotions containing close friends. We also confirmed this finding of the value of strong ties through a randomized field experiment and heterogeneous treatment effects modeling. In contrast to studies that have shown the importance of less close relationships in vaccine decision-making, we found little effect from awareness of VPF adoption by weak ties. Finally, we detected no significant backfire effect for expressing support for COVID-19 vaccines via VPFs. Together, these results suggest that social proof provided by close friends may be a key driver for messaging campaigns intended to drive prosocial behavior such as publicly promoting vaccination and that these campaigns do not necessarily come with adverse experiences for adopters, even for a polarizing issue such as vaccines.
Family of Gaussian wavepacket dynamics methods from the perspective of a nonlinear Schrödinger equation
Authors: J. L. Vaníček Jiří 
Published: July 2023

Many approximate solutions of the time-dependent Schrödinger equation can be formulated as exact solutions of a nonlinear Schrödinger equation with an effective Hamiltonian operator depending on the state of the system. We show that Heller’s thawed Gaussian approximation, Coalson and Karplus’s variational Gaussian approximation, and other Gaussian wavepacket dynamics methods fit into this framework if the effective potential is a quadratic polynomial with state-dependent coefficients. We study such a nonlinear Schrödinger equation in full generality: we derive general equations of motion for the Gaussian’s parameters, demonstrate time reversibility and norm conservation, and analyze conservation of energy, effective energy, and symplectic structure. We also describe efficient, high-order geometric integrators for the numerical solution of this nonlinear Schrödinger equation. The general theory is illustrated by examples of this family of Gaussian wavepacket dynamics, including the variational and nonvariational thawed and frozen Gaussian approximations and their special limits based on the global harmonic, local harmonic, single-Hessian, local cubic, and local quartic approximations for the potential energy. We also propose a new method by augmenting the local cubic approximation with a single fourth derivative. Without substantially increasing the cost, the proposed “single-quartic” variational Gaussian approximation improves the accuracy over the local cubic approximation and, at the same time, conserves both the effective energy and symplectic structure, unlike the much more expensive local quartic approximation. Most results are presented in both Heller’s and Hagedorn’s parametrizations of the Gaussian wavepacket.
Experimental characterization of gaseous ion beams produced with the advanced ion source for hadrontherapy (AISHa) at 18 GHz
Authors: Castro G. , Leonardi O. , Chines F. , Costanzo G. , D’Agostino G. , Massara A. , Maugeri C. , Passarello S. , Russo F. , Siliato D. , Calabrese G. , Gammino S. , Celona L. 
Published: July 2023

The Advanced Ion Source for Hadrontherapy (AISHa) is an electron cyclotron resonance ion source operating at 18 GHz, developed at the Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali del Sud, with the aim of producing high intensity and low emittance highly charged ion beams for hadrontherapy purposes. Moreover, thanks to its unique peculiarities, AISHa is a suitable choice for industrial and scientific applications. In the framework of the INSpIRIT and IRPT projects, in collaboration with the Centro Nazionale di Adroterapia Oncologica, new candidates for cancer treatment are being developed. In particular, the paper presents the results of the commissioning of four ion beams of interest for hadrontherapy: H+, C4+, He2+, and O6+. Their charge state distribution in the best experimental conditions, their emittance, and brightness will be critically discussed, along with the role of ion source tuning and space charge effects in beam transport. Perspectives for further developments will also be presented.