bluuebunny/crossref_metadata_2025_split huggingface dataset:
5G communication resource allocation strategy for mobile edge computing based on deep deterministic policy gradient
Authors: He Jun 
Published: March 2023

AbstractDistributed base station deployment, limited server resources and dynamically changing end users in mobile edge networks make the design of computing offloading schemes extremely challenging. Considering the advantages of deep reinforcement learning (DRL) in dealing with dynamic complex problems, this paper designs an optimal computing offloading and resource allocation strategy. Firstly, the authors consider a multi‐user mobile edge network scenario consisting of Macro‐cell Base Station (MBS), Small‐cell Base Station (SBS) and multiple terminal devices, the communication overhead and calculation overhead generated are formulated and described in detail. Besides, combined with the deterministic delay of tasks, the optimization objective of this paper is clarified to comprehensively consider system energy consumption. Then, a learning algorithm based on Deep Deterministic Policy Gradient (DDPG) is proposed to minimize system energy consumption. Finally, simulation experiments show that the authors’ proposed DDPG algorithm can effectively optimize the target value, and the total system energy consumption is only 15.6 J, which is better than other compared algorithms. It is also proved that the proposed algorithm has excellent communication resource allocation ability.
Retour sur le colloque « L’animal à l’Anthropocène »
Authors: Leblan Vincent , Duda Romain , Narat Victor 
Published: March 2023

Le colloque « L’animal à l’Anthropocène », organisé par le CNRS et le Muséum national d’histoire naturelle, s’est tenu en ligne en décembre 2020. Ce colloque avait pour objectif d’analyser l’évolution des rapports utilitaires et affectifs entre humains et animaux dans le contexte de l’Anthropocène, avec l’ambition de réunir une grande diversité de disciplines. Nous commençons par une synthèse des interventions. Puis nous revenons sur trois aspects saillants du colloque : la mobilisation du concept de culture sur l’interface humain-animal, les usages du concept d’Anthropocène au sein du colloque, ses effets sur l’interdisciplinarité entre sciences sociales et sciences naturelles. Si ce colloque a permis d’aborder les relations humains-animaux à travers différentes approches et échelles de temps, son rattachement à la notion d’Anthropocène n’a pas semblé décisif pour favoriser les échanges scientifiques.
SARS-CoV-2-Infektion und interstitielle Lungenerkrankungen – Positionspapier der Deutschen Gesellschaft für Pneumologie und Beatmungsmedizin
Authors: Behr Jürgen , Berger Melanie , Blum Torsten Gerriet , Bonella Francesco , Dinkel Julien , Gläser Sven , Hagmeyer Lars , Kneidinger Nikolaus , Koschel Dirk , Prasse Antje , Slevogt Hortense , Stacher-Priehse Elvira , Woehrle Holger , Kreuter Michael 
Published: March 2023

ZusammenfassungDie SARS-CoV-2-Pandemie hat in erheblichem Umfang die Diagnostik und Therapie interstitieller Lungenerkrankungen (ILD) beeinflusst. Insbesondere in der Frühphase der Pandemie und unter dem Einfluss der Delta-Variante ist es zu zahlreichen COVID-19-Pneumonien gekommen, in deren Gefolge sich bestehende interstitielle Lungenerkrankungen verschlechtert haben, neue entstanden sind oder entdeckt wurden. Den Einfluss einer SARS-CoV-2-Infektion – mit oder Viruspneumonie – auf vorbestehende ILD sowie die weitere Entwicklung neu entstandener pulmonaler Infiltrate und Konsolidierungen abzuschätzen, zu diagnostizieren und angemessen zu behandeln stellt eine nahezu tägliche Herausforderung in den interdisziplinären ILD-Boards dar. Mit diesem Positionspapier der Deutschen Gesellschaft für Pneumologie und Beatmungstherapie e.V. (DGP) werden auf Basis des aktuellen Wissensstandes Antworten auf die wichtigsten Fragestellungen gegeben.
Die medizinische Versorgung von Patienten mit Rückenschmerzen
Authors: Niemier Kay , Steinmetz Anke , Mallwitz Joachim 
Published: March 2023

ZUSAMMENFASSUNGRückenschmerzen stellen trotz eines hohen medizinischen Aufwandes weiterhin ein relevantes medizinisches und sozialmedizinisches Problem dar. Das medizinische Wissen über Rückenschmerzen ist über die letzten Jahre angewachsen, trotzdem setzen sich diese Erkenntnisse nicht in die alltägliche Versorgung von Patienten um. Es stellt sich die Frage, inwiefern neben der Durchdringung neuer Erkenntnisse auch strukturelle Probleme im Gesundheitssystem für diesen Mangel verantwortlich ist.
Entstehungsbedingungen von sexuell bedingten Schmerzen und Schwierigkeiten beim Geschlechtsverkehr von Frauen: Ergebnisse eines Mixed-Methods-Projektes
Authors: Koops Thula U. 
Published: March 2023

ZusammenfassungIn diesem Beitrag wird ein Forschungsprojekt vorgestellt, welches die Frage nach den Ursprüngen sexueller Schmerzen oder Schwierigkeiten beim Geschlechtsverkehr von Frauen untersucht und dabei eine Reihe theoretischer, methodologischer und empirischer Ansätze verfolgt. Hierzu wurden weltweite Prävalenzzahlen, die subjektive Perspektive von Frauen mit eigenen Erfahrungen mit Schmerzen oder Schwierigkeiten beim Geschlechtsverkehr auf mögliche Ursprünge sowie psychodynamische Überlegungen und Bezugssysteme anhand eines Literaturüberblicks, qualitativer Analysen (Grounded Theory, psychoanalytisch orientierte Forschung) und einer quantitativen Analyse (statistische Auswertung von Fragebogendaten) untersucht. Die Ergebnisse bieten diverse Anregungen für weitere Forschung und legen nahe, dass die durch die unterschiedlichen Perspektiven erarbeiteten Aspekte sowohl im Einzelnen tiefergehend untersucht werden sollten als auch im Hinblick auf ihre gegenseitige Beeinflussung und Verbundenheit. Darüber hinaus erscheint es für die klinische Praxis relevant, die verschiedenen Aspekte in die Behandlung einzubinden.
Autonome Diagnostik bei der Amyotrophen
Lateralsklerose
Authors: Metelmann Moritz , Baum Petra , Pelz Johann 
Published: March 2023

ZusammenfassungBei der Amyotrophen Lateralsklerose (ALS) handelt sich um eine neurodegenerative
Multisystemerkrankung. Diese äußert sich neben den motorischen
Defiziten mit nicht-motorischen Symptomen. Hierzu zählen auch autonome
Störungen, die von veränderter Schweißsekretion
über Tachykardie bis zu gastrointestinalen Symptomen reichen. Autonome
Störungen können mit verschiedenen Methoden, wie
Selbsterhebungsfragebögen, Messung der Herzfrequenzvariabilität,
QTc-Intervallmessung, Erhebung der sudomotorischen Funktion und Sonographie des
Nervus vagus erfasst werden, die in diesem Artikel dargestellt werden. Die
bislang bei der ALS eingesetzten Methoden der autonomen Diagnostik ergeben zum
Teil deutlich divergierende Ergebnisse über die Aktivität des
Sympathikus im Krankheitsverlauf. Relevante autonome Störungen scheinen
zumeist erst im fortgeschrittenen Krankheitsstadium aufzutreten, wobei
multizentrische Studien mit longitudinalem Ansatz ausstehen.
Is there a link between heart rate variability and cognitive decline? A cross-sectional study on patients with mild cognitive impairment and cognitively healthy controls
Authors: Grässler Bernhard , Dordevic Milos , Darius Sabine , Herold Fabian , Forte Giuseppe , Langhans Corinna , Halfpaap Nicole , Müller Patrick , Glanz Wenzel , Dantas Estélio Henrique Martin , Böckelmann Irina , Müller Notger , Hökelmann Anita 
Published: March 2023

Abstract
Background Given that, up to date, there is no effective strategy to treat dementia, a timely start of interventions in a prodromal stage such as mild cognitive impairment (MCI) is considered an important option to lower the overall societal burden. Although autonomic functions have been related to cognitive performance, both aspects have rarely been studied simultaneously in MCI.
Objective The aim of the present study was to investigate cardiac autonomic control in older adults with and without MCI.
Methods Cardiac autonomic control was assessed by means of heart rate variability (HRV) at resting state and during cognitive tasks in 22 older adults with MCI and 29 healthy controls (HCs). Resting HRV measurement was performed for 5 minutes during a sitting position. Afterwards, participants performed three PC-based tasks to probe performance in executive functions and language abilities (i.e., Stroop, N-back, and a verbal fluency task).
Results Participants with MCI showed a significant reduction of HRV in the frequency-domain (high frequency power) and nonlinear indices (SD2, D2, and DFA1) during resting state compared to HCs. Older individuals with MCI exhibited decreases in RMSSD and increases in DFA1 from resting state to Stroop and N-back tasks, reflecting strong vagal withdrawal, while this parameter remained stable in HCs.
Conclusion The results support the presence of autonomic dysfunction at the early stage of cognitive impairment. Heart rate variability could help in the prediction of cognitive decline as a noninvasive biomarker or as a tool to monitor the effectiveness of therapy and prevention of neurodegenerative diseases.
Applicability of an immersive virtual reality system to assess egocentric orientation of older adults
Authors: Silva Juliana Magalhães da , Santos Michelle Didone dos , Costa Raquel Quimas Molina da , Moretto Emerson Galves , Viveiro Larissa Alamino Pereira de , Lopes Roseli de Deus , Brucki Sonia Maria Dozzi , Pompeu José Eduardo 
Published: March 2023

Abstract
Background Spatial orientation is a cognitive domain frequently compromised in patients with Alzheimer disease (AD) and may be one of its first clinical manifestations. Some studies have shown that allocentric integration with egocentric spatial information seems to be impaired in this pathology. There is no consensus on how best to assess spatial orientation and traditional tests lack ecological validity, but, recently, virtual reality (VR) has provided new opportunities for this assessment.
Objectives To analyze the applicability and stability of an immersive virtual task developed to assess spatial orientation, the Spatial Orientation in Immersive Virtual Environment Maze Test (SOIVET-Maze) in older adults with and without mild cognitive impairment.
Methods Forty-three older adults were included in the study, 24 without cognitive impairment and 19 with mild cognitive impairment. Applicability was assessed by the Witmer and Singer Sense of Presence Questionnaire and a questionnaire for adverse events of cybersickness. To assess stability, participants were assessed twice with an interval of 7 to 14 days, and the intraclass correlation coefficient was calculated between visits. The t test or the Mann-Whitney test was used to compare applicability and stability between groups.
Results There was no significant difference between the groups regarding applicability. A strong correlation between the first and second day of testing was found in the mild cognitive impairment group.
Conclusion The SOIVET-Maze task showed excellent applicability and good stability, favoring its clinical application for the evaluation of spatial orientation in older adults.
National Databases for Assessment of Quality
Authors: Johnson Hillary R. , Murtha Jacqueline A. , Berian Julia R. 
Published: March 2023

AbstractWith the rise in the availability of large health care datasets, database research has become an important tool for colorectal surgeon to assess health care quality and implement practice changes. In this chapter, we will discuss the benefits and drawbacks of database research for quality improvement, review common markers of quality for colorectal surgery, provide an overview of frequently used datasets (including Veterans Affairs Surgical Quality Improvement Program, National Surgical Quality Improvement Project, National Cancer Database, National Inpatient Sample, Medicare Data, and Surveillance, Epidemiology, and End Results), and look ahead to the future of database research for the improvement of quality.
Wideband Acoustic Reflex Measurement
Authors: Feeney M. Patrick , Schairer Kim S. , Putterman Daniel B. 
Published: March 2023

AbstractAcoustic reflex thresholds (ART) obtained using pure-tone probe stimuli as part of a traditional immittance test battery can be used to evaluate site of lesion and provide a cross-check with behavioral results. ARTs obtained as part of a wideband acoustic immittance (WAI) test battery using a click as the probe stimulus can be used in the same way with the added benefit that they may provide lower ARTs than those obtained using a pure-tone probe. Another benefit of the WAI ART test is that it can be completed without requiring a hermetic seal or pressurizing the ear canal. A new adaptive method of obtaining ARTs using WAI techniques may cut test time in half, thus making this an attractive option for future clinical use. More advanced uses of WAI ART tests include the measurement of AR growth functions. These may be used to investigate the possible effects of synaptopathy related to high levels of noise exposure and possible auditory deficits related to ototoxicity.
Age and growth of Pomatomus saltatrix in the south-western Pacific Ocean (eastern Australia), with a global comparison
Authors: Schilling Hayden T. , Stewart John , Litherland Lenore , Smith James A. , Everett Jason D. , Hughes Julian M. , Suthers Iain M. 
Published: March 2023

Context Pomatomus saltatrix is one of few globally distributed pelagic mesopredators that is exploited heavily throughout its range. Despite the implementation of management strategies, the south-western Pacific Ocean (eastern Australian) population has few published estimates of the key life-history parameters including growth. Aims To estimate the age and growth of P. saltatrix in the south-western Pacific and compare these with the age and growth in other populations. Methods Age estimates were made using whole otolith readings and an age–length key was used with a length frequency distribution to estimate the age structure of the population. Eight different growth models were compared within a Bayesian framework for both juvenile and overall growth. Key results The Schnute growth equation provided the best fit for overall growth and yielded parameter values of a = −0.15, b = 2.56, Size-at-age 1 = 24.38-cm fork length (FL) and Size-at-age 4 = 47.36 cm FL. Conclusions P. saltatrix in the south-western Pacific has a growth rate similar to that in other populations of P. saltatrix. Implications Despite its geographically and genetically distinct populations, P. saltatrix demonstrates a generally consistent life-history strategy of fast growth and high mortality, except for the north-western Atlantic population, which has lower mortality.
“Jerry was a terrific host!” “You were a brilliant guest!”
Authors: Cenni Irene , Vásquez Camilla 
Published: March 2023

Abstract
Expanding the research investigating compliments in CMC genres, this study explores reciprocal compliments from
consumers and service-providers on Airbnb, a major tourism platform. Specifically, the study examines distribution of compliments
in both guest reviews of Online Experiences (a virtual tourism service) and hosts’ responses to those reviews, focusing on
compliment topics, their syntactic realizations, and their associated intensification strategies. Despite some similarities with
prior research on CMC compliments with respect to the overall frequency and general expression of compliments, we also identified
several differences related to compliment reciprocity as well as a greater tendency toward more formal language use in this
professional digital context. These differences are likely related to the different relationships among participants, as well as
different user goals when communicating on commercially-oriented sites versus social networking sites, demonstrating the need to
expand the scope of CMC compliment research to include a broader range of platforms.
Double-layer broadband transmission metasurface and its application in low sidelobe antenna
Authors: Wang Ziyue , Liu Qikun , Yan Mengyao , Liang Jie , Zhou Dongfang 
Published: March 2023

Abstract
This study proposes a double-layer metasurface which is capable of conducting independent amplitude and phase modulation for transmitting x-polarized waves under y-polarized incidence. The phase modulation is controlled by regulating the opening angle of the middle metal ring. Meanwhile, amplitude modulation is achieved by adjusting the rotation angle of the opening ring structure. The cross-polarized transmission response achieves complete phase and amplitude coverage and exhibits wideband characteristic with which a 3 dB gain bandwidth of 54.6% (5.4–9.5 GHz). The polarization isolation level is lower than −20 dB. In the wideband frequency range, the average sidelobe level of phase-only modulated metalens antenna is less than −20 dB with the lowest value of −22.5 dB, and the intermediate sidelobe level of amplitude-phase independent modulated metalens antenna is less than −25 dB with the lowest value of −27.4 dB. Both numerical simulated and experimental results verify that the proposed metalens antenna realizes a 4.8 dB averages of the sidelobe level suppression compared with the phase-only modulation metalens antenna. Holding strong anti-interference performance due to its superiority in polarization isolation level and side lobe level, the proposed antenna embraces broad application prospects in point-to-point communication systems in jamming environments.
Characterization of Cu(In,Ga)(Te,S)2 thin films grown on stainless steel foil substrates
Authors: Karaca Abdullah , Başol Bülent M , Olgar M Ali , Büyüklimanlı Temel , Tomakin Murat , Küçükömeroğlu Tayfur , Bacaksız Emin 
Published: March 2023

Abstract
In this study, Cu(In,Ga)(Te,S)2 (CIGTS) thin films with [Ga]/([In] ± [Ga]) atomic ratios in the ranges of 0.22–0.28 and 0.50–0.67 were fabricated using a two-stage technique. During the first stage of the technique, in one set of samples, Cu, In and Ga layers were deposited by electrodeposition on a Mo coated stainless steel (SS) foil substrate forming a SS/Mo/Cu/In/Ga precursor structure. For another set of samples, a Te layer was also deposited by e-beam evaporation on the SS/Mo/Cu/In/Ga structure forming a SS/Mo/Cu/In/Ga/Te precursor structure. During the second stage, SS/Mo/Cu/In/Ga and SS/Mo/Cu/In/Ga/Te stacks were reacted using rapid thermal annealing (RTA) for 5 min at 600 °C with or without presence of S vapors to produce CIGTS series thin films. SS/Mo/Cu/In/Ga stack under S atmosphere yielded CuInGaS2 with a Ga-In gradient across the thickness by RTA process. SS/Mo/Cu/In/Ga/Te stack reacted without S in the reaction atmosphere yielded the CuInGaTe2 compound. When S was present, the same stack with top Te layer yielded only CuInGaS2 compound. When, however, already formed CuInGaTe2 compound layers were heated in S environment at 400 °C, some Te could be retained in the films in the form of elemental Te. Gallium and In grading in various reacted films were evaluated by x-ray diffraction, secondary-ion mass spectrometry and EDS. CIGTS films showed highly (112) preferred oriented chalcopyrite phase and with the increase of Ga content, shifts were observed in the XRD peak positions demonstrating Ga inclusion in the lattice. Gibbs free energy calculations were used to explain the preferred reaction of S with metallic constituents when both S and Te were present for reaction.
Study on the ionization and acceleration of a microwave discharge cusped field thruster
Authors: Zeng Ming , Liu Hui , Huang Hongyan , Yu Daren 
Published: March 2023

Abstract
The microwave discharge cusped field thruster is a novel concept electric micro propulsion device, also a candidate thruster for the gravitational detection mission. A coaxial transmission line resonator is utilized to feed the microwave into the thruster to generate Xe plasma steadily with a mass flow rate as low as 0.1 sccm. Due to the separation of ionization and acceleration, the thruster performs high operation mode stability over a wide range of voltage in low mass flow conditions. Experimental and simulation methods are carried out to study the ionization and ion acceleration of the thruster. The results show that in operating conditions with a mass flow rate of 0.1 sccm, an anode voltage of 0 V to 1000 V, and a microwave power of 2 W, the right-hand circularly polarized wave (R wave) and the ordinary wave (O wave) play the most important role in the ionization process. The ion acceleration region locates around the exit magnetic separatrix, and the acceleration region tends to converge toward the separatrix as the anode voltage increases, resulting in an increased focus of the thruster plume and concentration of the ion energy distribution. Due to the separation of the ionization and acceleration regions, the thruster performs a divergence efficiency of 0.5–0.8, and an acceleration efficiency of 0.9.
Experimental studies on the performance of magnetic shields under different magnetization conditions
Authors: Yang Jianzhi , Zhang Xu , Shi Minxia , Yuan Shuai , Zhang Leran , Wang Ling , Han Bangcheng 
Published: March 2023

Abstract
In recent decades, magnetic shields have provided basic experimental environments for the measurements of extremely weak magnetic fields represented by the biological magnetic signal. Excellent shielding performances, including the low residual field and high shielding factor (SF), are necessary to ensure the quality of these weak magnetic signals and avoid the interference of external magnetic fields. The magnetic shielding performance of the same device can be affected by different degaussing and test conditions, which remains to be systematically studied. In this paper, experiments with variable magnetization conditions, including different degaussing orders, test fields and environmental fields, are established in a nearly zero-field space to simulate the different situations during measurement. The residual field and SF of the cubic shielding device are tested in these cases. Meanwhile, these shielding performances are analyzed from the perspective of the magnetization state and calculated based on the magnetic properties which are tested and fitted by the Jiles–Atherton model. The results show the influence of these different conditions on the shielding performances of the cubic device, consistent with the numerical calculation. Under the same environmental field, the different degaussing order and test field lead to completely different residual field and shielding performance, respectively. The influence of the Earth’s magnetic field on the SF can be ignored due to its tiny equivalent bias field determined by the anhysteretic magnetization curve.
Vector meson photoproduction in UPCs with FoCal
Authors: Bylinkin A , Nystrand J , Tapia Takaki D 
Published: March 2023

AbstractWe discuss the physics prospects of photon-induced measurements using the high-granularity FoCal detector to be installed at the ALICE experiment, covering the pseudorapidity interval 3.4 ≤η≤ 5.8. This new detector, scheduled to be in operation from Run 4, will explore the small Bjorken-xphysics region in an unprecedented way. In this region the gluon ,saturation phenomenon is expected to be dominant. Combined with the rest of the ALICE subdetectors, including the zero degree calorimenters, FoCal will serve to reconstruct in a model-independent way the measured photoproduction cross sections for vectors mesons in a wide range of photon-target energies, down toxvalues of about 7 × 10−6and 2 × 10−6in ultra-peripheral photon–proton and photon–lead collisions, respectively.