bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Comparative Cross-Sectional Study- Knowledge, behavior and psychological change among Medical and Non-medical Students in Jordan during COVID-19 pandemic
Authors: Al Jomaa Esraa Ebraheem , Al Meslamani Ahmad , Abazid Husam 
Published: August 2022

Background: Coronavirus disease 2019 (COVID-19) has rapidly spread worldwide, and it was officially declared to be a pandemic by the World Health Organization on March 11, 2020. COVID-19 is associated with increasing morbidity and mortality and has impacted the lives of the global populations.
Aim: To compare the knowledge of medical and non-medical students at Jordanian universities in issues related to COVID-19 and to evaluate the psychological and behavioural changes in Jordanian students’ lives following directly/indirectly exposure to the COVID-19.
Methods: A descriptive cross-sectional online survey was sent to a convenience sample in Jordanian universities through social media (Facebook and WhatsApp) between 16th of June and 30th of June 2020. The questionnaire was designed to collect the demographic, participant’s source of information regarding COVID-19, knowledge on COVID-19, the psychological consequences of COVID-19, impact of COVID-19 on participant’s behaviour. The final version of the questionnaire was further tested for content validity by experts in the field. Chi-square test was used to find significant differences between the two groups.
Results: A total of 912 participants completed the survey, with 507(55.6%) being medical students and 405(44.4%) being non-medical students. About 90% of students believed in the existence of corona virus (n=817), but not in the seriousness of the infection (n=85, 9.3%). The majority 82.2% (n=750) agreed that the fake news on social media caused panic situations. A total of 275 medical students avoided following news as compared to 187 non-medical students, and the difference was statistically significant (p-value = 0.003). There were 438 medical students and 338 non medical students who avoided leaving the house for unnecessary needs (p-value = 0.004).
Conclusion: Medical students had better knowledge and were more aware on COVID-19 than that of non-medical students; for this reason, medical students tended to change their behaviours in a good way. The current pandemic seems to impact the psychology of the both groups with no difference significant.
Data-Driven Variable Impedance Control of a Powered Knee-Ankle Prosthesis for Adaptive Speed and Incline Walking
Authors: Best Thomas , Welker Cara , Rouse Elliott , Gregg Robert 
Published: August 2022

<p>Most impedance-based walking controllers for powered knee-ankle prostheses use a finite state machine with dozens of user-specific parameters that require manual tuning by technical experts. These parameters are only appropriate near the task (e.g. walking speed and incline) at which they were tuned, necessitating many different parameter sets for variable-task walking. In contrast, this paper presents a data-driven, phase-based controller for variable-task walking that uses continuously-variable impedance control during stance and kinematic control during swing to enable biomimetic locomotion. After generating a data-driven model of variable joint impedance with convex optimization, we implement a novel task-invariant phase variable and real-time estimates of speed and incline to enable autonomous task adaptation. Experiments with above-knee amputee participants (N=2) show that our data-driven controller 1) features highly-linear phase estimates and accurate task estimates, 2) produces biomimetic kinematic and kinetic trends as task varies, leading to low errors relative to able-bodied references, and 3) produces biomimetic joint work and cadence trends as task varies. We show that the presented controller meets and often exceeds the performance of a benchmark finite state machine controller for our two participants, without requiring manual impedance tuning. </p>
Estimation of Lower Extremity Joint Moments and 3D Ground Reaction Forces Using IMU Sensors in Multiple Walking Conditions: A Deep Learning Approach
Authors: Hossain Md Sanzid Bin , Guo Zhishan , Choi Hwan 
Published: August 2022

<p>Human kinetics, specifically joint moments and ground reaction forces (GRFs) can provide important clinical information and can be used to control assistive devices. Traditionally, collection of kinetics is mostly limited to the lab environment because it relies on data that measured from a motion capture system and floor-embedded force plates to calculate the dynamics via musculoskeletal models. This spatially limited method makes it extremely challenging to measure kinetics outside the laboratory in a variety of walking conditions due to the expensive device setup and large space required. Recently, employing machine learning with IMU sensors are suggested as an alternative method for biomechanical analyses. Although these methods enable estimating human kinetic data outside the laboratory by linking IMU sensor data with kinetics dataset, they were limited to show inaccurate kinetic estimates even in highly repeatable single walking conditions due to the employment of generic deep learning algorithms. Thus, this paper proposes a novel deep learning model, KineticsFM-DLR-Ensemble-Net to estimate the hip, knee, and ankle joint moments in the sagittal plane and 3 dimensional ground reaction forces (GRFs) using three IMU sensors on the thigh, shank, and foot under several representative walking conditions in daily living, such as treadmill, level-ground, stair, and ramp with different walking speeds. This is the first study that implements both joint moments and GRFs in multiple walking conditions using IMU sensors via deep learning. Our deep learning model is versatile and accurate for identifying human kinetics across diverse subjects and walking conditions and our model outperforms state-of-the-art deep learning model for kinetics estimation by a large margin.<br>
</p>
The First Short GRB Millimeter Afterglow: The Wide-angled Jet of the Extremely Energetic SGRB 211106A
Authors: Laskar Tanmoy , Escorial Alicia Rouco , Schroeder Genevieve , Fong Wen-fai , Berger Edo , Veres Péter , Bhandari Shivani , Rastinejad Jillian , Kilpatrick Charles D. , Tohuvavohu Aaron , Margutti Raffaella , Alexander Kate D. , DeLaunay James , Kennea Jamie A. , Nugent Anya , Paterson K. , Williams Peter K. G. 
Published: August 2022

Abstract
We present the discovery of the first millimeter afterglow of a short-duration γ-ray burst (SGRB) and the first confirmed afterglow of an SGRB localized by the GUANO system on Swift. Our Atacama Large Millimeter/Sub-millimeter Array (ALMA) detection of SGRB 211106A establishes an origin in a faint host galaxy detected in Hubble Space Telescope imaging at 0.7 ≲ z ≲ 1.4. From the lack of a detectable optical afterglow, coupled with the bright millimeter counterpart, we infer a high extinction, A
V ≳ 2.6 mag along the line of sight, making this one of the most highly dust-extincted SGRBs known to date. The millimeter-band light curve captures the passage of the synchrotron peak from the afterglow forward shock and reveals a jet break at

t

jet

=

29.2

−
4.0

+
4.5

days. For a presumed redshift of z = 1, we infer an opening angle, θ
jet = (15.°5 ± 1.°4), and beaming-corrected kinetic energy of

log
(

E

K

/

erg
)
=
51.8
±
0.3

, making this one of the widest and most energetic SGRB jets known to date. Combining all published millimeter-band upper limits in conjunction with the energetics for a large sample of SGRBs, we find that energetic outflows in high-density environments are more likely to have detectable millimeter counterparts. Concerted afterglow searches with ALMA should yield detection fractions of 24%–40% on timescales of ≳2 days at rates of ≈0.8–1.6 per year, outpacing the historical discovery rate of SGRB centimeter-band afterglows.
Discovery of the First Known Asteroid Confined within the Orbit of Venus
Authors: Ip Wing-Huen , Masci Frank J. , Ye Quanzhi , Kramer Emily A. , Helou George , Prince Thomas A. , Kulkarni S. R. , Dekany Richard , Drake Andrew , Graham Matthew J. , Groom Steven , Laher Russ R. , Mahabal Ashish A. , Rusholme Ben 
Published: August 2022

Abstract
We report on the discovery by the Zwicky Transient Facility of an asteroid orbiting entirely within the orbit of Venus, the first known example of this orbital class. The asteroid's perihelion is closer to the Sun than the aphelion of Mercury, and its diameter is estimated at about 1.8 km assuming an albedo of 0.2. The object was first observed on 2020 January 4 in four exposures obtained 7 minutes apart during an evening twilight survey. Its IAU-recognized designation is 594913 ‘Ayló’chaxnim.
MIGHTEE-Hi: Evolution of Hi Scaling Relations of Star-forming Galaxies at z < 0.5*
Authors: Sinigaglia Francesco , Rodighiero Giulia , Elson Ed , Vaccari Mattia , Maddox Natasha , Frank Bradley S. , Jarvis Matt J. , Oosterloo Tom , Davé Romeel , Salvato Mara , Baes Maarten , Bellstedt Sabine , Bisigello Laura , Collier Jordan D. , Cook Robin H. W. , Davies Luke J. M. , Delhaize Jacinta , Driver Simon P. , Foster Caroline , Kurapati Sushma , P. Lagos Claudia del , Lidman Christopher , Mancera Piña Pavel E. , Meyer Martin J. , Mogotsi K. Moses , Pan Hengxing , Ponomareva Anastasia A. , Prandoni Isabella , Rajohnson Sambatriniaina H. A. , Robotham Aaron S. G. , Santos Mario G. , Sekhar Srikrishna , Spekkens Kristine , Thorne Jessica E. , van der Hulst Jan M. , Wong O. Ivy 
Published: August 2022

Abstract
We present the first measurements of H i galaxy scaling relations from a blind survey at z > 0.15. We perform spectral stacking of 9023 spectra of star-forming galaxies undetected in H i at 0.23 < z < 0.49, extracted from MIGHTEE-H i Early Science data cubes, acquired with the MeerKAT radio telescope. We stack galaxies in bins of galaxy properties (stellar mass M
*, star formation rateSFR, and specific star formation rate sSFR, with sSFR ≡ M
*/SFR), obtaining ≳5σ detections in most cases, the strongest H i-stacking detections to date in this redshift range. With these detections, we are able to measure scaling relations in the probed redshift interval, finding evidence for a moderate evolution from the median redshift of our sample z
med ∼ 0.37 to z ∼ 0. In particular, low-M
* galaxies (

log

10

(

M

*

/

M

⊙

)
∼
9

) experience a strong H i depletion (∼0.5 dex in

log

10

(

M

H

I

/

M

⊙

)

), while massive galaxies (

log

10

(

M

*

/

M

⊙

)
∼
11

) keep their H i mass nearly unchanged. When looking at the star formation activity, highly star-forming galaxies evolve significantly in M
H I (f
H I, where f
H I ≡ M
H I/M
*) at fixed SFR (sSFR), while at the lowest probed SFR (sSFR) the scaling relations show no evolution. These findings suggest a scenario in which low-M
* galaxies have experienced a strong H i depletion during the last ∼5 Gyr, while massive galaxies have undergone a significant H i replenishment through some accretion mechanism, possibly minor mergers. Interestingly, our results are in good agreement with the predictions of the simba simulation. We conclude that this work sets novel important observational constraints on galaxy scaling relations.
Catalog of X-Ray Detected Be Stars (XDBS)
Authors: Gobat Caden , Yang Hui , Kargaltsev Oleg , Hare Jeremy , Volkov Igor 
Published: August 2022

Abstract
We present a catalog of X-ray Detected Be Stars (XDBS) with 161 Be stars from the Be Star Spectra (BeSS) database having X-ray counterparts in the Chandra Source Catalog v2.0, XMM-Newton 4XMM-DR11 Catalog, or Swift 2SXPS Catalog. The multi-wavelength catalog includes accurate optical positions, X-ray properties (fluxes, photon indices and hardness ratios), optical, near-infrared and infrared photometry, source classifications (when available), and other properties including proper motions, effective temperatures, X-ray to optical flux ratios as well. We also provide a convenient https://home.gwu.edu/~kargaltsev/XDBS/graphical user interface which allows for easy visualization of the catalog content.
Dione’s Thermal Inertia and Bolometric Bond Albedo Derived from Cassini/CIRS Observations of Solar Eclipse Ingress
Authors: Howett Carly J. A. , Spencer John R. 
Published: August 2022

Abstract
On 2010 May 18 Cassini’s Composite Infrared Spectrometer (CIRS) observed Dione’s leading hemisphere as its surface went into solar eclipse. Surface temperatures derived from each of CIRS’ focal plane 3 (FP3, 600−1100 cm−1) show a rapid decrease in Dione’s surface temperature upon eclipse ingress. This change was compared to the model surface emission to constrain bolometric Bond albedo and thermal inertia. Seven FP3 detectors were able to constrain the observed surface’s thermophysical properties. The bolometric Bond albedo derived from these detectors are consistent with one another (0.54 ± 0.05 to 0.62 ± 0.03) and that of diurnal studies (e.g., 0.49 ± 0.11, Howett et al. 2014). This indicates that Dione’s albedo is uniform to within the uncertainties across the observed region of its leading hemisphere. The derived thermal inertias are consistent across detectors, 9 ± 4 J m−2 K−1 s−1/2 (MKS) to 16 ± 8 MKS, and with previous diurnal studies (e.g., 8 to 12 MKS, Howett et al. 2014). The skin depth probed by the eclipse thermal wave is ∼0.6–1 mm, which is much shallower than that probed by diurnal cycles (∼50 mm). Thus, the agreement in thermal inertia between the eclipse and diurnal studies indicates that Dione’s subsurface structure is uniform from submillimeter to subcentimeter depths. This is different from the Jovian system, where eclipse-derived thermal inertias are much lower than those derived from diurnal studies. The cause of this difference is not known, but one possibility is that the E-ring grains that bombard Dione’s leading hemisphere overturn it, causing uniformity to centimeter depths.
Indications for hospital admission, prevalence of vascular and non-vascular complications and comorbidities among patients with diabetes mellitus admitted to a medical unit in a tertiary care hospital, Sri Lanka
Authors: De Silva P. U. , Kodithuwakku G. , Imbulgoda N. P. , Samarawikkrama M. D. , Palagasingha D. , Nanayakkara S. D. , Weerarathna T. P. 
Published: August 2022

Background: Hospital admissions with diabetes-related complications are on the rise in Sri Lanka. We aimed to study indications for hospital admissions and the prevalence of micro, macrovascular and non-vascular comorbidities in patients with diabetes mellitus admitted to a medical unit in a tertiary care hospital. Methods: A hospital-based, cross-sectional study was carried out in Teaching Hospital Karapitiya over six months. Four hundred in-ward patients with diabetes were studied. Evidence of diabetes nephropathy, nonvascular co-morbidities and indication for admission were extracted from medical records using a pretested data extraction form. Screening for Diabetic peripheral neuropathy (DPN), and diabetic retinopathy (DR) were carried out using standard protocols. Results: The highest number of admissions (142) were due to infections of which 52.8 % were females. One-third (33.8%) of the patients had previous admissions during the past year with a significant female preponderance (66%). DPN and DR were detected in 55.4% and 52.9% respectively with a significant proportion of them being females. Diabetic nephropathy was diagnosed in 27.9%. Nearly half (47.3%) of the sample was on treatment for hypertension and 39.4% were on statins. Evidence of previous myocardial infarction was significantly higher among the females compared to males (72.8% vs. 27. 2%). Conclusions: Infections were the most frequent indication for hospital admission among diabetic patients. DPN and DR are significantly higher among females than males. Use of statins for dyslipidaemia is suboptimal among the admitted patients.
Evaluation of anaemia in geriatric patients: a retrospective hospital-based study from Northern Sri Lanka
Authors: Sujanitha V. , Sooryakumar T. , Kumarasiri T. , Rajeshkannan N. , Tharmiga S. 
Published: August 2022

Background: Anaemia in older adults is a common medical problem but it is often not evaluated as a sole clinical entity and its importance is undermined. The gravity of anaemia in older adults and its impact on other diseases is not well known in Sri Lanka. Methods: This was a cross-sectional descriptive study where data was extracted retrospectively from the database and clinical records of patients who were referred to the haematology unit of Teaching Hospital Jaffna, Sri Lanka for the evaluation of anaemia, from September 2020 to February 2021. The common types of anaemia, their severity, aetiological classifications and association with other diseases were analysed. Results: A total of 1121 medical records of patients above 60 years were analysed during the study period. The main source of referrals was from medical wards. The female to male ratio was 51.2:48.8.The majority belonged to the age group of 60-69 years. Two-third of the patients had normocytic anaemia (70.3%) followed by microcytic (23.7%) and macrocytic anaemia (6.0%). A moderate degree of anaemia was seen commonly, but 28.3% were found to have severe anaemia. Aetiological classification revealed anaemia of chronic disease as the commonest type of anaemia in older adults accounting for 37% of the study sample, followed by multifactorial aetiology and iron deficiency anaemia. Common chronic diseases identified along with anaemia were diabetes, hypertension, ischaemic heart disease and chronic kidney disease. Conclusions: Normocytic anaemia was the commonest type identified and the majority were of a moderate degree. Though the commonest aetiological cause identified is anaemia of chronic disease, there was a considerable percentage of multifactorial causes indicating the need to be on the lookout for other possibilities. Identifying the prevalence of anaemia in all hospitalised older adult patients in the local setting, the causes and the impact on chronic and acute illnesses will immensely help in the management of older adult patients and improve their quality of life.
IL-27 Promotes Intestinal Barrier Integrity following Ethanol Intoxication and Burn Injury
Authors: Luck Marisa E , Li Xiaoling , Herrnreiter Caroline J , Cannon Abigail R , Choudhry Mashkoor A 
Published: August 2022

Abstract
Alcohol intoxication combined with burn injury can lead to life-threatening complications, including sepsis, multiple organ failure, and death. After an acute burn, the gastrointestinal system becomes hypoxic because of fluid loss and reduction of intestinal blood flow. This can cause perturbations in the intestinal epithelial barrier, immune function, and the composition of the gut microbiome. Increased gut permeability leads to proinflammatory signaling, contributing to further damage to the intestinal barrier. Recent studies have suggested that IL-27 plays an anti-inflammatory role, which may be beneficial in intestinal barrier repair. Therefore, in this study, we examined the effect of ethanol and burn injury on IL-27 in the small intestine, as well as the potential beneficial role of IL-27 in restoring the intestinal barrier after intoxication and burn. Male C57BL/6 mice were gavaged with 2.9 g/kg ethanol before receiving a ∼12.5% total body surface area scald burn with or without rIL-27 in resuscitation fluid. Our results demonstrate that IL-27–producing cells are reduced in the small intestine after injury. When IL-27 is supplemented in resuscitation fluid, we were able to restore intestinal barrier integrity and transit, mediated through increased intestinal epithelial cell proliferation, reduced inflammatory cytokines, and increased anti-inflammatory cytokine IL-10. We also observed increased gene expression of tight junction proteins. These findings suggest that IL-27 may be a contributor to maintaining proper intestinal barrier function after injury through multiple mechanisms, including preventing excess inflammation and promoting intestinal epithelial cell proliferation and tight junction integrity.
Angle Kappa measurement pre-keratorefractive and post-keratorefractive surgery using Orbscan 3
Authors: Zaki Rania G.E. , Gharieb Hesham M. , Othman Ihab S. 
Published: August 2022

Aim of the study
Measurement of the mean angle Kappa pre-keratorefractive and post-keratorefractive surgery utilizing Orbscan 3.

Patients and methods
This retrospective study was conducted on patients who had refractive surgeries, group A included patients who underwent Lasik and group B included patients who underwent Photo Refractive Keratectomy (PRK). Mean age from 18 to 45 years. Preoperative, 1-week, and 1-month postoperative assessments included detailed ocular examination, slit-scanning topography done by Orbscan 3, and total ocular aberrations by Zywave 3 were done.

Results
The study comprised 146 eyes of 75 individuals. Preoperative data demonstrated that angle Kappa mean in Lasik group (group A) was 2.38±1.54 at 147.05±96.94, in PRK group (group B) was 2.31±1.17 at 137.67±85.7. Paired mean differences of the two groups between preoperative data and 1-week postoperative show no statistically significant difference in central corneal thickness (CCT) nor angle Kappa values. Paired mean differences of the two groups between preoperative data and 1-month postoperative show no statistically significant difference regarding CCT nor angle Kappa values. Preoperative, 1-week postoperative, and 1-month postoperative correlation of angle Kappa to refractive error, spherical equivalent, average K-reading, CCT and axial length, showed that both groups had a positive correlation with axial length.

Conclusion
Keratorefractive surgeries do not affect angle Kappa or its intercept measurements.
Visual outcome of implantable phakic contact lens
Authors: Mostafa Mohamed A. , El-Shayeb Ashraf A.-H. , El-Shahed Ahmed F. 
Published: August 2022

Aim
To evaluate the visual outcome of implantable phakic contact lens (IPCL) in high myopia.

Setting
Al-Mashreq Eye Center, Cairo, Egypt.

Patients and methods
Thirty eyes of 17 patients underwent surgery to correct high myopia using IPCL (Care Group-India) with a central hole (V2.0). Visual acuity, spherical equivalent, and intraocular pressure (IOP) were evaluated 6 months postoperatively. Anterior chamber parameters Anterior chamber volume (ACV), Anterior chamber depth (ACD), Anterior chamber angle width (ACAW) were measured using Pentacam.

Results
After 6 months, spherical equivalent decreased from −14.19±4.2 to −0.18±0.66 D, all cases were within ±1.00 D of intended correction. Best corrected visual acuity (BCVA) remained unchanged in 13% of cases, 13% gained one line, and 74% gained two or more lines. ACV, ACD, and ACAW decreased from 189.77±20.19 mm3, 3.15±0.27 mm, and 37.31±5.63° to 131.4±14.01 mm3, 3.05±0.29 mm, and 23.94±4.81°, respectively. Changes in IOP between preoperative and 6 months postoperatively were statistically insignificant.

Conclusion
IPCL is a safe, effective, and predictable surgery to correct high myopia. Most cases gained one or more lines of BCVA. Reduction of ACV did not induce IOP rise during 6 months of follow-up.