Mind the gender gap: COVID-19 lockdown effects on gender differences in preprint submissions.

The gender gap is a well-known problem in academia and, despite its gradual narrowing, recent estimations indicate that it will persist for decades. Short-term descriptive studies suggest that this gap may have actually worsened during the months of confinement following the start of the COVID-19 pandemic in 2020. In this work, we evaluate the impact of the COVID-19 lockdown on female and male academics' research productivity using preprint drop-off data. We examine a total of 307,902 unique research articles deposited in 5 major preprint repositories during the period between January and May each year from 2017 to 2020. We find that the proportion of female authors in online repositories steadily increased over time; however, the trend reversed during the confinement and gender parity worsened in two respects. First, the proportion of male authors in preprints increased significantly during lockdown. Second, the proportion of male authors in COVID-19-related articles was significantly higher than that of women. Overall, our results imply that the gender gap in academia suffered an approximately 1-year setback during the strict lockdown months of 2020, and COVID-related research areas suffered an additional 1.5-year setback.

Impact of a Longitudinal Medical Spanish Curriculum on Student Communication Skills.

PURPOSE: This study describes and examines the short- and longer-term impact of a required longitudinal medical Spanish curriculum on physician assistant student preparedness and ability to communicate with patients in Spanish during clinical rotations. METHODS: Fifty-eight preclinical students participated in an 80-hour curriculum delivered weekly over 3 semesters. Teaching followed a framework of second-language acquisition and included structured grammar and medical vocabulary practice with didactic, interactive, and group assignments. Vocabulary and grammar were assessed with quizzes. Oral proficiency was assessed by faculty with Spanish Objective Structured Clinical Examination (OSCE) stations at midpoint and end using the Interagency Language Roundtable (ILR), a 6-level scale (immediate outcome). Students self-rated proficiency and confidence and evaluated curriculum effectiveness for preparing them to care for Spanish-speaking patients (longer-term outcomes). RESULTS: All students passed the written and oral quizzes. Faculty-scored ILR verbal proficiency at the OSCEs increased by a mean level of 0.5 over 6 months. Student self-assessed proficiency improved on average by one level from baseline to 24 months later. Students rated highly curriculum effectiveness, preparedness to communicate in Spanish during clinical rotations, ability to judge when an interpreter was needed, and the importance of medical Spanish to future practice. CONCLUSIONS: A required integrated longitudinal medical Spanish curriculum was well received. Physician assistant students demonstrated short-term interval progression in Spanish proficiency, with improvements in both faculty and self-rating scores, and readiness to apply the skill to practice. They valued active learning associated with repeated practice with feedback, role playing, and interval assessments throughout the curriculum.

Road extraction from aerial images using a region competition algorithm.

In this paper, we present a user-guided method based on the region competition algorithm to extract roads, and therefore we also provide some clues concerning the placement of the points required by the algorithm. The initial points are analyzed in order to find out whether it is necessary to add more initial points, and this process will be based on image information. Not only is the algorithm able to obtain the road centerline, but it also recovers the road sides. An initial simple model is deformed by using region growing techniques to obtain a rough road approximation. This model will be refined by region competition. The result of this approach is that it delivers the simplest output vector information, fully recovering the road details as they are on the image, without performing any kind of symbolization. Therefore, we tried to refine a general road model by using a reliable method to detect transitions between regions. This method is proposed in order to obtain information for feeding large-scale Geographic Information System.

Postconcussion syndrome and mild head injury: the role of early diagnosis using neuropsychological tests and functional magnetic resonance/spectroscopy.

OBJECTIVE: Postconcussion syndrome (PCS) is usually underestimated in cases of mild head injury (MHI). It is one of the most common causes of physical, cognitive, and psychomotor disturbances that affect the quality of life, work, and social reintegration of individuals. Until now, we did not have evidence of structural abnormalities shown by traditional imaging methods. We describe a series of instruments that confirm PCS with satisfactory evidence. METHODS: We conducted a clinical prospective study of 19 adult patients selected from a pool of 320 adults who had MHI. The cognitive, executive, and memory functions of subjects were examined within the first 72 hours using neuropsychological tests. These results were analyzed with neurological examination and functional MR/spectroscopy. RESULTS: Neurobehavioral alterations were found in 47% of cases, with posttraumatic amnesia. Around 55% of subjects experienced physical disturbances such as headache and postural vertigo due to PCS. The spectroscopy reports revealed neurometabolite disturbances in 54% of cases, particularly N-acetylaspartate (Naa) and the Naa/lactate ratio in the frontal lobe. We observed a relationship between metabolite disturbances in spectroscopy and the digit span backward test (P = .045). CONCLUSIONS: This first diagnostic strategy supports with scientific evidence the presence of PCS in MHI. We identified physical and neuropsychological abnormalities from this group, affecting the areas of memory and learning. Evidence of neurometabolite disturbances were found specifically in the frontal lobe. It is necessary to complete comparative follow-up for an extended period of time. The neuropsychological and spectroscopy tests allow us to confirm the diagnosis of a syndrome that is usually neglected.