bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radiological assessment of facial recess and correlation with surgical measurement in cochlear implantation
Authors: Behairy Essam Abdel Wanees , Hamad Mohamed Hisham , Shawky Mohamed , Aboshady Sohair Reda , Eldemerdash Ashraf Ali 
Published: April 2023

Abstract
Background
The facial recess (FR) is the crucial landmark in posterior tympanotomy approach which is the conventional approach for cochlear implantation surgery. This work aimed to measure the facial recess width and length radiologically and correlate these measurements with the surgical measurements in cochlear implantation procedure. An observational cross-sectional study was conducted on one hundred patients with sensorineural hearing loss prepared for cochlear implantation according to health insurance regulations. Patients included in the study were subjected to the following protocol: a routine ENT examination formed the initial part of the evaluation, audiological tests for adults and children were done, and the radiological evaluation for the patients included high-resolution computed tomography (HRCT) scanning [axial plane, oblique sagittal plane, and curved multiplanar reconstruction (MPR CT)]. These HRCT images were used to measure the facial recess width and length. Measurement of the FR width and length was done intraoperative by using a sterile ruler. Radiological measurements were correlated with the surgical measurements.

Results
There was a statistically significant correlation between FR width surgically and FR width radiologically (p-value < 0.001). FR width measured in CT axial cuts, curved MPR images, and oblique sagittal cuts could predict FR width surgically. There was a statistically significant correlation between FR length surgically and FR length radiologically (p-value < 0.001). There was no statistically significant correlation between age and sex on one hand and surgical and radiological measurements on the other hand.

Conclusion
Preoperative HRCT axial plane, oblique sagittal plane, and curved MPR CT can predict actual facial recess width and length.
Stationary time correlations for fermions after a quench in the presence of an impurity
Authors: Gouraud G. , Le Doussal P. , Schehr G. 
Published: April 2023

Abstract
We consider the quench dynamics of non-interacting fermions in one dimension in the presence of a finite-size impurity at the origin. This impurity is characterized by general momentum-dependent reflection and transmission coefficients which are changed from

to

at time t = 0. The initial state is at equilibrium with

such that the system is cut in two independent halves with

,

, respectively, to the right and to the left of the impurity. We obtain the exact large time limit of the multi-time correlations. These correlations become time translationally invariant, and are non-zero in two different regimes: i) for

where the system reaches a non-equilibrium steady state (NESS), ii) for

, i.e., the ray regime. For a repulsive impurity these correlations are independent of

,

, while in the presence of bound states they oscillate and memory effects persist. We show that these nontrivial relaxational properties can be retrieved in a simple manner from the large time behaviour of the single particle wave functions.
Double power-law distribution in spatial network induced by cost constraints
Authors: Qian Jiang-Hai , Li Hui-Fang , Yang Chao , Han Ding-Ding 
Published: April 2023

Abstract
We investigate the scaling laws of the degree distribution in an evolving spatial network where the long-range links of a node are subject to a cost constraint. The constraint can cause a discontinuous reduction in the length of the links to be attached to the node once the node reaches some critical degree k

c
. We show that this effect can result in an abrupt change in the attachment probability and consequently induces a double power-law degree distribution. We derive the distribution analytically for the homogeneous constraint and demonstrate a consistent result for the heterogeneous one. Our model finds a robust connection between the double power law and the spatial constraint and offers a plausible explanation of the common occurrence of the distribution in airline networks.
Reward Processing During Monetary Incentive Delay Task After Leptin Substitution in Lipodystrophy—an fMRI Case Series
Authors: Schlögl Haiko , Janssen Lieneke , Fasshauer Mathias , Miehle Konstanze , Villringer Arno , Stumvoll Michael , Mueller Karsten 
Published: April 2023

AbstractContextBehaviorally, the most pronounced effects of leptin substitution in leptin deficiency are the hunger-decreasing and postprandial satiety-prolonging effects of the adipokine. Previously, with functional magnetic resonance imaging (MRI), we and others showed that eating behavior–controlling effects are at least in part conveyed by the reward system. However, to date, it is unclear if leptin only modulates eating behavior specific brain reward action or if it also alters the reward function of the brain unrelated to eating behavior.ObjectiveWe investigated with functional MRI the effects of metreleptin on the reward system in a reward task unrelated to eating behavior, the monetary incentive delay task.DesignMeasurements in 4 patients with the very rare disease of lipodystrophy (LD), resulting in leptin deficiency, and 3 untreated healthy control persons were performed at 4 different time points: before start and over 12 weeks of metreleptin treatment. Inside the MRI scanner, participants performed the monetary incentive delay task and brain activity during the reward receipt phase of the trial was analyzed.ResultsWe found a reward-related brain activity decrease in our 4 patients with LD over the 12 weeks of metreleptin treatment in the subgenual region, a brain area associated with the reward network, which was not observed in our 3 untreated healthy control persons.ConclusionsThese results suggest that leptin replacement in LD induces changes of brain activity during reward reception processing completely unrelated to eating behavior or food stimuli. This could suggest eating behavior-unrelated functions of leptin in the human reward system.Trial registrationThe trial is registered as trial No. 147/10-ek at the ethics committee of the University of Leipzig and at the State Directorate of Saxony (Landesdirektion Sachsen).
Improved Mechanical Characterization of LiCoO2 Cathode Material by Ab-Initio Calculations Using Density Functional Theory
Authors: Torii Masato , Kawakami Takashi , Yamanaka Shusuke , Okumura Mitsutaka 
Published: April 2023

Abstract
In the application of density functional theory (DFT) calculations to LiCoO2 (LCO) cathode material of lithium-ion batteries, this study investigates the differences between the obtained values for lattice constants, elastic constants, and stress-strain curves using different calculation condition such as exchange-correlation energy functionals; additionally, it attempts to improve the accuracy of the mechanical characterization of the DFT calculation. The results reveal that the adoption of Perdew-Wang (PW91) functional with dispersion corrections is better in the structural optimization of the DFT calculation for the LCO cathode compared with other calculation conditions, such as the adoption of Perdew-Burke-Ernzerhof (PBE) and revised PBE for solids (PBE-solid), which have been used in previous studies. The high accuracy of the lattice constant calculations in the structural optimization using PW91 results in a relatively high evaluation accuracy of the mechanical properties of these cathode materials. Additionally, a strong correlation between the lattice (or lattice volumes) and elastic constants is observed; evidently, a slight deviation in the lattice constants causes a relatively significant change in the elastic constants. In some of the calculation results for stress-strain curves, differences in the elastic limits (elastic regions) dependent on the selected exchange-correlation functionals are clearly observed.
The Ultimate Guide for Selecting Repetition Tempos
Authors: Mang Zachary , Ronai Peter , Kravitz Len 
Published: April 2023

Apply it!
By reading this article, you will learn:
• Repetition tempo, which is sometimes referred to as repetition duration, describes movement velocity during eccentric, isometric, and concentric phases of one repetition. Thus, repetition tempo plays a major role in set duration, which is commonly referred to as time under tension (TUT).
• When a general population client is training for hypertrophy, the effective duration range for one repetition is 0.5 to 8 seconds. The key is making sure your client is training close to momentary muscular failure. When strength is the primary goal, there is evidence that repetition durations of less than 1 to 20 seconds are effective. Although power can be improved with a variety of tempos, a 2-second eccentric duration followed by a maximal speed concentric duration (i.e., “X”) is the most effective.
• For those working with elderly patients, strength, power, and physical function can be improved with 3/3- and 3/X-second tempos, but the latter is most effective.
• For those working with patients in cardiac rehabilitation or patients with cardiovascular disease, it is important to keep TUT short, which is accomplished by using faster repetition tempos (e.g., 1/1 vs. 2/2 seconds).
Η επαγγελματική ανάπτυξη των εκπαιδευτικών μέσα από τις σχολικές συμπράξεις Erasmus+ KA2
Authors: ΑΘΑΝΑΣΑΚΟΥ ΠΗΝΕΛΟΠΗ 
Published: April 2023

Η εργασία διερευνά τη συμβολή του Προγράμματος Erasmus+:ΚΑ2 της εκπαιδευτικής πολιτικής της Ευρώπης στους εκπαιδευτικούς της Δευτεροβάθμιας Εκπαίδευσης στην επαγγελματική και την προσωπική τους ανάπτυξη. Σκοπός της έρευνας είναι να εξετάσει τις αντιλήψεις των εκπαιδευτικών που συμμετείχαν σε ένα τέτοιο πρόγραμμα σχετικά με το πως και αν ωφελήθηκαν επαγγελματικά και προσωπικά. Η μεθοδολογία της έρευνας είναι ποιοτική και διενεργήθηκαν συνεντεύξεις σε δέκα εκπαιδευτικούς Γυμνασίου και Λυκείου του Νομού Έβρου με βολική δειγματοληψία. Οι διαπιστώσεις που προέκυψαν από την έρευνα έδειξαν ότι το πρόγραμμα Erasmus+:ΚΑ2 (σχολικές συμπράξεις) αποτελεί σημαντικό εργαλείο για τη επαγγελματική και προσωπική ανάπτυξη των εκπαιδευτικών της Δευτεροβάθμιας Εκπαίδευσης και ότι χρειάζονται και κάποιες βελτιώσεις ως προς το υλικοτεχνικό κομμάτι του προγράμματος. Επιπλέον, εμφανίζονται και κάποιοι προβληματισμοί των εκπαιδευτικών σε επίπεδο συνεργασιών τόσο ενδοσχολικά όσο και εξωσχολικά.
Συγκριτική μελέτη των πιο πρόσφατων νόμων (2010-2018) με τους οποίους πραγματοποιήθηκε η επιλογή Διευθυντών Σχολικών Μονάδων
Authors: Ταταρίδης Γιάννης 
Published: April 2023

Η εργασία πραγματοποιεί μια συγκριτική μελέτη των τεσσάρων τελευταίων νόμων με τις οποίες πραγματοποιήθηκαν επιλογές στελεχών, δηλαδή των Ν.3848/2010, Ν.4327/2015, Ν.4473/2017 και N.4547/2018. Η σύγκριση αυτή δε γίνεται σε θεωρητικό πλαίσιο βάσει κυβερνητικής στοχοθεσίας και πολιτικών ιδεολογιών, αλλά με μεγέθη που μπορούν να ποσοτικοποιηθούν, ώστε να γίνει η αντιπαραβολή των τεσσάρων νομοθετικών πλαισίων με τους οποίους έγιναν οι τελευταίες επιλογές στελεχών στην εκπαίδευση, χρησιμοποιώντας τη μέθοδο της ανάλυσης γραπτών τεκμηρίων.
Διαχείριση συγκρούσεων των δασκάλων στα ελληνικά Πρωτοβάθμια σχολεία
Authors: Παπαγεωργάκη Δήμητρα Παναγιώτης 
Published: April 2023

Οι συγκρούσεις στα σχολεία είναι ένα σύνηθες φαινόμενο λόγω της συστημικής λειτουργίας αυτών των οργανισμών. Οι διαφορετικές προσωπικότητες, οι ατομικές αντιλήψεις αλλά και οι πολλαπλές στοχοθεσίες των εκπαιδευτικών, δημιουργούν προστριβές και διαταράσσουν το σχολικό κλίμα που απαιτείται για αποδοτικό εκπαιδευτικό έργο. Ανάμεσα στις πολλές αιτίες διακρίνονται η έλλειψη επικοινωνίας, οι οργανωτικές αδυναμίες, οι συγκρουόμενοι στόχοι ατόμων κι ομάδων και οι ατομικές διαφορές. Οι τρόποι αντιμετώπισης ποικίλλουν αλλά συγκλίνουν σε συνεργασία, κατανόηση, επικοινωνία, σαφείς οργανωτικούς κανόνες και ομόρροπους στόχους. Προτείνονται ως στρατηγικές διαχείρισης η διαπραγμάτευση, η καλή οργανωτική λειτουργία, η αποφυγή και ο συμβιβασμός. Ο/Η διευθυντής/τρια από τον ηγετικό του ρόλο καλείται να τις διαχειριστεί προς όφελος της σχολικής μονάδας. Στο πλαίσιο αυτό πρέπει να κατέχει αυξημένες ηγετικές, συμβουλευτικές και διοικητικές δεξιότητες.
CO2 ablative fractional laser - mechanism of action and assessment of safety, effectiveness in the treatment and possible side effects based on a review of scientific literature
Authors: Kołodziejczyk Kacper , Hop Izabela , Branewska Justyna , Ostrowska Barbara , Matysek Mikołaj , Olszanicka Anna , Imioło Jan , Maciąg Anna , Niemiec Rafał , Galas Adam 
Published: April 2023

Introduction: Laser therapy has been used in medicine for many years. One of the most willingly used is the fractional ablative CO2 laser. As a result of its use, the improvement of pigmentation, skin texture and signs of aging are achieved. Laser therapy owes its popularity to its low invasiveness and good, long-lasting effects of the procedure. Despite its important role in aesthetic medicine, we should not forget about its participation in the treatment of scars, often extensive, causing troublesome symptoms to patients, the source of which is not only a defect of a cosmetic nature.
Purpose of the work: The purpose of the study is to present mechanism of action, assessment of safety, effectiveness in the treatment and possible side effects based on a review of scientific literature.
Material and methods: The work was based on a review of available medical publications on the use of the fractional ablative CO2 laser. The literature in the PubMed and Google Scholar databases was searched based on the following keywords: fractional ablative CO2 laser, mechanism of action, safety of use, side effects.
Conclusion: The use of a fractional ablative CO2 laser causes the increased collagen production in the dermis. This effect contributes to the elevation of the quantity and level of collagen arrangement, and also to the reduction of the visibility of the effects of photoaging. As a result, the skin in the treated area becomes thicker, and thus firmer. The pigmentation and texture are also being improved. The procedure is relatively slightly invasive, and the side effects are self-limiting in the most cases.
Sensitivity Analysis of the Maximal Value Function with Applications in Nonconvex Minimax Programs
Authors: Guo Lei , Ye Jane J. , Zhang Jin 
Published: April 2023

In this paper, we perform a sensitivity analysis for the maximal value function, which is the optimal value function for a parametric maximization problem. Our aim is to study various subdifferentials for the maximal value function. We obtain upper estimates of Fréchet, limiting, and horizon subdifferentials of the maximal value function by using some sensitivity analysis techniques sophisticatedly. The derived upper estimates depend only on the union of all solutions and not on its convex hull or only one solution from the solution set. Finally, we apply the derived results to develop some new necessary optimality conditions for nonconvex minimax problems. In the nonconvex-concave setting, our Wolfe duality approach compares favorably with the first-order approach in that the necessary condition is sharper and the constraint qualification is weaker. Funding: L. Guo was supported by the National Natural Science Foundation of China [Grants 72131007, 72140006, and 12271161] and the Natural Science Foundation of Shanghai [Grant 22ZR1415900]. J. J. Ye was partially supported by the Natural Sciences and Engineering Research Council of Canada. J. Zhang was supported by the National Natural Science Foundation of China [Grant 12222106], the Shenzhen Science and Technology Program [Grant RCYX20200714114700072], and the Guangdong Basic and Applied Basic Research Foundation [Grant 2022B1515020082].
Tibial plateau fractures in older adults are associated with a clinically significant deterioration in health-related quality of life
Authors: Gupta Shreya , Yapp Liam Z. , Sadczuk Dominika , MacDonald Deborah J. , Clement Nick D. , White Tim O. , Keating John F. , Scott Chloe E. H. 
Published: April 2023

AimsTo investigate health-related quality of life (HRQoL) of older adults (aged ≥ 60 years) after tibial plateau fracture (TPF) compared to preinjury and population matched values, and what aspects of treatment were most important to patients.MethodsWe undertook a retrospective, case-control study of 67 patients at mean 3.5 years (SD 1.3; 1.3 to 6.1) after TPF (47 patients underwent fixation, and 20 nonoperative management). Patients completed EuroQol five-dimension three-level (EQ-5D-3L) questionnaire, Lower Limb Function Scale (LEFS), and Oxford Knee Scores (OKS) for current and recalled prefracture status. Propensity score matching for age, sex, and deprivation in a 1:5 ratio was performed using patient level data from the Health Survey for England to obtain a control group for HRQoL comparison. The primary outcome was the difference in actual (TPF cohort) and expected (matched control) EQ-5D-3L score after TPF.ResultsTPF patients had a significantly worse EQ-5D-3L utility (mean difference (MD) 0.09, 95% confidence interval (CI) 0.00 to 0.16; p < 0.001) following their injury compared to matched controls, and had a significant deterioration (MD 0.140, 95% CI 0 to 0.309; p < 0.001) relative to their preoperative status. TPF patients had significantly greater pre-fracture EQ-5D-3L scores compared to controls (p = 0.003), specifically in mobility and pain/discomfort domains. A decline in EQ-5D-3L greater than the minimal important change of 0.105 was present in 36/67 TPF patients (53.7%). Following TPF, OKS (MD -7; interquartile range (IQR) -1 to -15) and LEFS (MD -10; IQR -2 to -26) declined significantly (p < 0.001) from pre-fracture levels. Of the 12 elements of fracture care assessed, the most important to patients were getting back to their own home, having a stable knee, and returning to normal function.ConclusionTPFs in older adults were associated with a clinically significant deterioration in HRQoL compared to preinjury level and age, sex, and deprivation matched controls for both undisplaced fractures managed nonoperatively and displaced or unstable fractures managed with internal fixation.Cite this article:Bone Jt Open 2023;4(4):273–282.
Frequency modulation laser spectroscopy method for methane isotopologue ratio and total concentration measurements at 1661 nm
Authors: Curtis E. Anne , Nicholls Laurence , Black Nicola C. G. , Barwood Geoffrey P. 
Published: April 2023

Source identification and accurate measurements of methane gas
concentration are key tools necessary for climate change management.
Here we present a method for methane isotopologue ratio measurement
using a laser-based frequency modulation (FM) spectroscopy technique
in the near infrared at 1661 nm. We provide line shape analysis
and discuss a fitting algorithm for accurate isotopologue ratio
metrology and investigate and minimize the effects of residual
amplitude modulation on the experimentally produced FM signal line
shape. This FM technique is further evaluated for future development
of a cavity-enhanced and noise-immune system capable of isotopologue
ratio as well as ultrasensitive trace gas measurements, all accessible
using a single distributed feedback laser.
Extending the audiogram with loudness growth: The complementarity of electric and acoustic hearing in bimodal patients
Authors: Lambriks Lars , van Hoof Marc , George Erwin , Devocht Elke 
Published: April 2023

IntroductionClinically, recording hearing detection thresholds and representing them in an audiogram is the most common way of evaluating hearing loss and starting the fitting of hearing devices. As an extension, we present the loudness audiogram, which does not only show auditory thresholds but also visualizes the full course of loudness growth across frequencies. The benefit of this approach was evaluated in subjects who rely on both electric (cochlear implant) and acoustic (hearing aid) hearing.MethodsIn a group of 15 bimodal users, loudness growth was measured with the cochlear implant and hearing aid separately using a loudness scaling procedure. Loudness growth curves were constructed, using a novel loudness function, for each modality and then integrated in a graph plotting frequency, stimulus intensity level, and loudness perception. Bimodal benefit, defined as the difference between wearing a cochlear implant and hearing aid together versus wearing only a cochlear implant, was assessed for multiple speech outcomes.ResultsLoudness growth was related to bimodal benefit for speech recognition in noise and to some aspects of speech quality. No correlations between loudness and speech in quiet were found. Patients who had predominantly unequal loudness input from the hearing aid, gained more bimodal benefit for speech recognition in noise compared to those patients whose hearing aid provided mainly equivalent input.ConclusionResults show that loudness growth is related to bimodal benefit for speech recognition in noise and to some aspects of speech quality. Subjects who had different input from the hearing aid compared to CI, generally gained more bimodal benefit compared to those patients whose hearing aid provided mainly equivalent input. This suggests that bimodal fitting to create equal loudness at all frequencies may not always be beneficial for speech recognition.
Efficacy and safety of curcumin in diabetic retinopathy: A protocol for systematic review and meta-analysis
Authors: Wang Liyuan , Xu Jiayu , Yu Tianyang , Wang Hanli , Cai Xiaojun , Sun He 
Published: April 2023

Background
Diabetic retinopathy (DR) is one of the most common complications of diabetes and has become a major global cause of blindness. Curcumin, an extract of Curcuma longa (turmeric), is effective in preventing and treating diabetes. Recent studies have shown that curcumin can delay DR development. However, there has been no systematic review of its treatment of DR. This study will conduct a systematic review and meta-analysis of currently published randomized controlled trials (RCT) of curcumin for treating DR patients to evaluate its efficacy and safety.

Methods
We will search the relevant studies of curcumin in the treatment of DR in PubMed, Medline, EMBASE, Cochrane Library, China National Knowledge Infrastructure (CNKI), VIP, and Wanfang databases from their respective inception dates to May 2022. A meta-analysis of the data extracted from qualified RCTs will be conducted, including the progression of DR, visual acuity, visual field, macular edema, quality of life, and adverse events. The meta-analysis will be performed using Review Manager 5.4.1 software, and the results will be based on either random-effects or fixed-effects models, depending on the heterogeneity. The Grading of Recommendations, Development, and Evaluation (GRADE) system will be used to evaluate the reliability and quality of evidence.

Results
The results of this study will provide sound and high-quality evidence for the efficacy and safety of curcumin in the treatment of DR.

Conclusion
This study will be the first meta-analysis to comprehensively assess the efficacy and safety of curcumin in the treatment of DR and will provide helpful evidence for the clinical management of this disease.

Systematic review registration
INPLASY202250002.