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Brain aging and common conditions of aging (e.g., hypertension) affect networks important in organizing information, processing speed and action programming (i.e., executive functions). Declines in these networks may affect timing and could have an impact on the ability to perceive and perform musical rhythms. There is evidence that participation in rhythmic musical activities may help to maintain and even improve executive functioning (near transfer), perhaps due to similarities in brain regions underlying timing, musical rhythm perception and production, and executive functioning. Rhythmic musical activities may present as a novel and fun activity for older adults to stimulate interacting brain regions that deteriorate with aging. However, relatively little is known about neurobehavioral interactions between aging, timing, rhythm perception and production, and executive functioning. In this review, we account for these brain-behavior interactions to suggest that deeper knowledge of overlapping brain regions associated with timing, rhythm, and cognition may assist in designing more targeted preventive and rehabilitative interventions to reduce age-related cognitive decline and improve quality of life in populations with neurodegenerative disease. Further research is needed to elucidate the functional relationships between brain regions associated with aging, timing, rhythm perception and production, and executive functioning to direct design of targeted interventions.

INTRODUCTION: Although prompt treatment of status epilepticus is standard of care, the effect of timing of rescue therapy administration for seizure clusters in epilepsy remains unknown. Seizure clusters are a rare but clinically important condition, and benzodiazepines are the cornerstone rescue therapy for seizure clusters in epilepsy. We characterized temporal patterns from a large dataset of treated seizure clusters in the safety study of diazepam nasal spray. METHODS: This post hoc analysis used timing data of treated seizure clusters recorded by care partners and patients in seizure diaries during a 1-year safety study. Data analysis used time from seizure start to administration of diazepam. RESULTS: From 4466 observations, 3225 had data meeting criteria for analysis. Overall, median times from seizure start to dose administration, dose administration to seizure termination, and total seizure duration were 2, 3, and 7 min, respectively. In seizure clusters treated in

Musical instrument training has been linked to improved academic and cognitive abilities in children, but it remains unclear why this occurs. Moreover, access to instrument training is not always feasible, thereby leaving less fortunate children without opportunity to benefit from such training. Although music-based video games may be more accessible to a broader population, research is lacking regarding their benefits on academic and cognitive performance. To address this gap, we assessed a custom-designed, digital rhythm training game as a proxy for instrument training to evaluate its ability to engender benefits in math and reading abilities. Furthermore, we tested for changes in core cognitive functions related to math and reading to inform how rhythm training may facilitate improved academic abilities. Classrooms of 8-9 year old children were randomized to receive either 6 weeks of rhythm training (N = 32) or classroom instruction as usual (control; N = 21). Compared to the control group, results showed that rhythm training improved reading, but not math, fluency. Assessments of cognition showed that rhythm training also led to improved rhythmic timing and language-based executive function (Stroop task), but not sustained attention, inhibitory control, or working memory. Interestingly, only the improvements in rhythmic timing correlated with improvements in reading ability. Together, these results provide novel evidence that a digital platform may serve as a proxy for musical instrument training to facilitate reading fluency in children, and that such reading improvements are related to enhanced rhythmic timing ability and not other cognitive functions associated with reading performance. RESEARCH HIGHLIGHTS: Digital rhythm training in the classroom can improve reading fluency in 8-9 year old children Improvements in reading fluency were positively correlated with enhanced rhythmic timing ability Alterations in reading fluency were not predicted by changes in other executive functions that support reading A digital platform may be a convenient and cost-effective means to provide musical rhythm training, which in turn, can facilitate academic skills.

The present study sought to replicate two non-intuitive effects reported in the literature on lateral manual interception of uniformly moving targets, the angle-of-approach (AoA) effect and the reversal-movement (RM) effect. Both entail an influence of the target trajectory's incidence angle on the observed interceptive hand movements along the interception axis; they differ in the interception location considered. The AoA effect concerns all trajectory conditions requiring hand movement to allow successful interception, while the RM effect concerns the particular condition where the target will in fact arrive at the hand's initial position and no hand movement is therefore required but nevertheless regularly produced. Whereas the AoA effect has been systematically replicated, the RM effect has not. To determine whether the RM effect is in fact a reproducible phenomenon, we deployed a procedure enhancing the uncertainty about the target's future arrival locations with respect to the hand's initial position and included low-to-high target motion speeds. Results demonstrated the presence of both the AoA effect and the RM effect. The AoA effect was observed for all relevant interception locations, with the effect being stronger for the farther interception locations and the lower target speeds. The RM effect, with the hand first moving away from its initial position, in the direction of the target, before reversing direction, was observed in a higher proportion of trials for target trajectories with larger incidence angles and lower speeds. Earlier initiation gave rise to reversal movements of larger amplitude. Both effects point to visual guidance of hand movement partially based in reliance on information with respect to current lateral ball position. We conclude that the information used in lateral manual interception is of an intermediate order, which can be conceived as resulting from a partial combination of target position and velocity information or information in the form of a fractional order derivative. [ABSTRACT FROM AUTHOR]

Pituitary apoplexy is a clinical syndrome that can cause vision loss and oculomotor (OM) deficits. Neurosurgical decompression is still considered the treatment of choice for those with visual impairment. We aim to explore the influence of timing of neurosurgical decompression on visual outcome. Multicentre retrospective study of patients presenting with pituitary adenoma and pituitary apoplexy who were operated in three Spanish tertiary hospitals between 2008 and 2022. We identified 49 patients with pituitary apoplexy with visual symptoms and were operated. Among the visual symptoms, 35 patients (73%) had visual acuity (VA) impairment and 33 (67%) had an OM nerve paresis. Twenty-three of the 35 patients improved their VA, and 24 of the 33 improved their OM nerve paresis after surgery. The median time between apoplexy to surgery was 10 days (range 0-164). Regarding visual acuity, 50% (3 out of 6) of those operated within 3 days of apoplexy showed improvement, compared to 69% (20 out of 29) of those operated beyond (p = 0.37).Regarding OM paresis, 62.5% (5 out of 8) of those operated within 3 days of apoplexy improved, compared to 76% (19 out of 25) of those operated beyond (p = 0.56).Mean apoplexy to surgery time was 18 ± 19 days in those whose VA improved (vs. 32 ± 51; p = 0.46); and mean apoplexy to surgery time for those whose OM symptoms improved was 21+/- 35 days (vs. 24 +/- 37; p = 0.86). Our results suggest that timing of neurosurgical decompression does not affect the visual outcome of patients with pituitary apoplexy. [ABSTRACT FROM AUTHOR]

There is substantial evidence for timing (time perception) abnormalities related to developmental disabilities, particularly autism spectrum disorder. These findings have been reported in humans and nonhuman preclinical models. Our research objective was to extend that work to a genetic knockout (KO) model of fragile X/developmental disability, the FMR1 KO rat. We also sought to test delay discounting in the model and assess potential relations between timing and choice behavior. Consistent with previous human and nonhuman work, we found reduced timing precision in the FMR1 KO rats. We also discovered significantly increased smaller, sooner reward choice in the FMR1 KO rats. Performance on the timing task appeared to be unrelated to performance on the choice task for both model and control rats. These results add to what has become increasingly clear: timing is disrupted in humans diagnosed with developmental disabilities and in nonhuman models designed to model developmental disabilities. Our findings are consistent with those of previous work and the first to our knowledge to show such effects in the FMR1 KO rat. We discuss the potential clinical implications and future directions surrounding potential “timing interventions” for individuals diagnosed with developmental disabilities. [ABSTRACT FROM AUTHOR]

Background: The age of Danish women giving birth to their first child has risen throughout the last 50 years, and the number of women and men who are having their first child when they are at advanced maternal or paternal age is increasing worldwide. Postponing parenthood is not unique to Denmark, as the same pattern is seen especially in other European and Western countries. The aim of this study was in a social media setting to explore reflections on the timing of motherhood among Danish women of reproductive age who not yet had children. Method: This study was a qualitative study based on three online focus groups on Facebook. Twenty-six women of reproductive age discussed the timing of motherhood for three days in January 2020. Data were analyzed using Systematic Text Condensation. Results: Three main themes were identified: 'Life before parenthood', 'To plan for a child' and 'A life without children'. Several external and internal conditions influence whether and if so when women consider becoming mothers. Regarding the biological capacity for having children, women compare themselves with their female relatives and friends and colleagues regarding the social norms surrounding motherhood. Women with no children often experience either positive or negative pressure from family, friends, and colleagues regarding when to have children. Conclusion: Several internal and external considerations influence when and if women become mothers. Social surroundings such as family, friends, and colleagues have an impact on women's reproductive considerations in terms of pressure to have children in the future. Danish women tend to compare their reproductive capacity to their female relatives and compare the social norms surrounding motherhood to their female friends. Women in this study were positive towards discussing the timing of motherhood with other women of reproductive age on social media. Plain english summary: The age of women giving birth to their first child has risen throughout the last 50 years, and the number of Danish women and men having their first child when they are at advanced maternal or paternal is increasing. Postponing motherhood is not unique to Denmark, as the same pattern is seen especially in other European and Western countries. In this study, we explored the reflections on the timing of motherhood among Danish women of reproductive age who had not yet had children. Using a novel approach, we conducted three online focus groups on the social media platform Facebook. Twenty-six women aged 18–43 years without children, regardless of whether they wanted to have children in the future, were included. The study revealed several internal and external considerations influencing when and if women establish a family. Regarding their biological capacity for having children, women tend to compare themselves to their female relatives and their friends and colleagues regarding the social norms surrounding motherhood. Women with no children often experience pressure from family, friends, and colleagues about when to have children, which can be perceived as unfavorable while at the same time being experienced as motivating for planning future motherhood. Women in this study were positive towards discussing the timing of motherhood with other women of reproductive age on social media. [ABSTRACT FROM AUTHOR]

Despite intense training, even a seasoned baseball pitcher has difficulty throwing a ball to the same location repeatedly. I describe my research team's finding that such movement variability comes from muscles that activate at imprecise times and introduce a new method that uses a smartphone to robustly quantify movement variability, which is tightly related to the arm muscles' timing precision. This useful method reveals how movement variability, a measure of dexterity, changes with growth and age, and it quantifies the degree of handedness and footedness. [ABSTRACT FROM AUTHOR]

Background: Deep inferior epigastric perforator (DIEP) flap breast reconstruction is an increasingly popular technique, but controversy exists regarding the optimal use of closed suction drains (CSD) at the abdominal donor site. This narrative review synthesizes current evidence on CSD application, criteria for placement/removal, and complications in DIEP flap procedures. Alternative techniques and implications for postoperative care are also discussed. Methods: A systematic search was conducted in August 2024 across several databases to identify English language studies related to CSD use in DIEP flap breast reconstruction. Inclusion criteria consisted of original research on aspects such as CSD volume criteria, timing, complications, alternatives like progressive tension sutures, and impact on showering and patient outcomes. References from relevant papers were hand-searched. Results: The review found a lack of consensus on CSD protocols, with drainage volume triggering removal varying widely from 5 mL to 80 mL daily. While CSD may reduce seroma/hematoma formation, earlier removal (≤3 days) did not increase complications and shortened hospital stay. Progressive tension sutures show promise as an alternative, with evidence of comparable or reduced complications and improved recovery versus CSD. The safety of early showering with drains remains unclear. Conclusions: Although CSD aims to minimize postoperative complications, more rigorous randomized trials are needed to establish evidence-based practices for the timing of removal and demonstrate the efficacy of emerging drain-free techniques on patient-centered outcomes. Standardized criteria could reduce practice variability. Further research should also explore the long-term impact of drainage strategies on aesthetic and functional results. [ABSTRACT FROM AUTHOR]

The corporate bond market is larger, more illiquid, and presumably less efficient than the equity market. These features provide numerous profit opportunities for corporate bond mutual funds that are unique to the corporate bond market. However, whether corporate bond mutual funds have the valuation skills needed to take advantage of these opportunities is unclear. We introduce a novel measure to assess the valuation skills of investment-grade corporate bond mutual funds, which we refer to as the valuation accuracy score (VAS). VAS recognizes funds holding more underpriced and less overpriced corporate bonds as ex-ante having better valuation skills. It predicts future fund performance, is stable over time, and is unrelated to other sources of skill. Investors chase the performance of higher-VAS funds more aggressively and exhibit a convex flow–performance relation among these funds. [ABSTRACT FROM AUTHOR]

Purpose of Review: To provide an overview of the current evidence of the timing of surgery and rehabilitation after multiligamentous knee injuries (MLKIs) and offer insights into the ongoing multi-center randomized controlled study, the 'STaR trial'. Recent Findings: Due to the complexity of the MKLIs, they are usually treated surgically with the goal of either repairing or reconstructing the injured ligaments. Although the current literature on MLKIs is relatively extensive, the consensus on the timing of surgery or rehabilitation following surgery for MLKIs is still lacking. While current literature mostly suggests early treatment, there is also evidence preferring delayed treatment. Furthermore, evidence on the timing of postoperative rehabilitation is limited. Thus, the current multi-center randomized controlled study, the 'STaR trial', is expected to respond to these questions by adding new high-level evidence. Summary: The MLKIs are often associated with knee dislocation and constitute a highly complex entity, including concomitant injuries, such as neurovascular, meniscal, and cartilaginous injuries. The treatment of MLKIs usually aims to either repair or reconstruct the injured ligaments, however, there is no general consensus on the timing of surgery or rehabilitation following an MLKI surgery. This current review stresses the need for more high-level research to address the paucity of evidence-based treatment guidelines for the treatment of complex MLKIs. [ABSTRACT FROM AUTHOR]

It is crucial for early detection of mechanical damage to improve the quality of commodity fruits. To address the issues related to the fuzzy damage characteristics of early fruit damage and the challenges associated with accurately identifying the damaged locations, this study proposed a method of detecting the initial damage of apples based on passive thermal imaging technology. Passive thermal imaging technology was used to collect the thermal images of the apples 0–60 min after damage, once every 2 min, for a total of 5 times. The temperature difference data of the damaged part and the undamaged part were extracted from the temperature data, and the evolution law of the temperature difference with time was analyzed. Then, it was transformed into the area under the curve distribution data of the area under the curve, so as to generate the corresponding gray image for realizing the detection of the initial damage of apples. The results showed that the detection precision of the undamaged apples was 98.3%, and the average detection precision of the damaged apples was 86.7%. The proposed detection method can realize the nondestructive detection of the initial damage of apples, and provides research ideas and theoretical basis for more reliable detection of the initial minor damage of apples in the future. [ABSTRACT FROM AUTHOR]

Saccadic eye movements, a critical aspect of real‐world visual behavior, are preceded by an initial accumulation of visual information followed by the selection of a single location to move one's eyes. However, it is currently unclear how each of these stages uniquely affects saccadic timing. In this study, participants searched for a contour integration target while EEG was used to measure posterior cortical activity between search display onset and first saccade initiation. The goal was to determine whether saccade timing could be attributed to differences in early ERP amplitudes, with the P1 reflecting the magnitude of early perceptual information accumulation and the N1 reflecting the strength of selection leading to the saccadic decision. EOG was used to measure saccade timing, and trials were divided into fast, middle, and slow bins. The N1 response was smallest in the slow saccade tertile, relative to both the fast and middle tertiles, suggesting weak selection. In contrast, the P1 response was largest for this same slow saccadic tertile relative to the middle saccadic tertile, suggesting vigorous information accumulation. Therefore, delays in saccadic behavior may occur when the visual system is overwhelmed with visual input, thus increasing the time to reach a saccadic decision. These findings reconcile models of eye movement behavior which often prioritize either the impact of information accrual or selection, rather than regarding both as an integrated whole. [ABSTRACT FROM AUTHOR]

Aims Methods and results Conclusion The optimal timing for implementing mechanical circulatory support (MCS) in cardiogenic shock (CS) remains indeterminate. This study aims to evaluate patient characteristics and outcome associated with the time interval between CS onset and veno‐arterial extracorporeal membrane oxygenation (VA‐ECMO) implementation.In this study, patients with CS treated with MCS at 15 tertiary care centres in three countries were enrolled. Patients treated with MCS were stratified into early (<2 h), intermediate (2–12 h) and delayed (≥12–24 h) MCS implantation by using the time interval between CS onset and MCS device implementation. Adjusted logistic and Cox regression models were fitted to assess the association between timing of MCS implementation, patient characteristics and 30‐day mortality. A total of 330 patients with CS treated with VA‐ECMO and/or microaxial flow pump were included in this study; 20.9% received early, 55.8% intermediate, and 23.3% delayed MCS. Although crude 30‐day mortality was slightly lower in patients with early MCS (58.1% vs. 64.7% vs. 64.3%), adjusted analyses showed no significant association between timing of MCS implantation and 30‐day all‐cause mortality (hazard ratio [HR] for early vs. intermediate MCS: 0.93, 95% confidence interval [CI] 0.59–1.46, p = 0.74; HR for early vs. delayed MCS: 1.29, 95% CI 0.78–2.13, p = 0.33). Moreover, the incidence of complications, related and unrelated to MCS, did not differ significantly among groups.In this exploratory study of patients with CS treated with MCS, the timing of device implantation within 24 h after CS onset was not associated with mortality. This supports a restrictive MCS approach, reserving its application for patients experiencing CS deterioration despite conventional therapy. [ABSTRACT FROM AUTHOR]

Background: To date, in breast cancer (BC) treatment, adjuvant chemotherapy (A-CT) has preceded adjuvant radiotherapy (A-RT). In the last twenty years, the adjuvant treatment of BC has quickly evolved due to better knowledge of its molecular biology, genetic profile, and α/β ratio of 3/4 Gy for tumor and normal tissue radiosensitivity. Thus, new schedules with hypofractionated radiotherapy have been tested, and a third generation of A-CT has been introduced, raising the question of whether it is time to rethink the sequencing between these two approaches. Methods: In the last 20 years, many attempts have been made worldwide to optimize the best sequencing strategy between these two approaches in terms of sequential CT-RT and RT-CT and concomitant and sandwich modalities using drugs and schedules. This paper presents a comprehensive review of the state of the art, analyzing all the available studies to assess the sequencing between A-CT and A-RT with different generations of chemotherapy schedules. Results: More than 8000 patients from 30 studies treated with adjuvant chemotherapy and whole breast radiotherapy who were enrolled in randomized, retrospective, and prospective studies were analyzed. Sequential, concomitant, and sandwich modalities of chemotherapy with conventional or hypofractionated RT schedules from the most important studies were included. The most used sequence was adjuvant chemotherapy followed by conventional or hypofractionated radiotherapy. In the concomitant approach, i.v. CMF has been the most important adopted schedule, while the concomitant use of anthracyclines and taxanes with conventional or hypofractionated radiotherapy has been found to be more toxic. One study analyzed the benefit in terms of reducing adjuvant treatment time with upfront hypofractionated radiotherapy and third-generation chemotherapy. Conclusions: At present, the best sequencing strategy has not yet been defined. This comprehensive review is a journey among the most important randomized, retrospective, and prospective studies that highlights the past, current, and novel time sequencing proposals between A-CT and A-RT to assess the state of the art and provide useful information for future adjuvant approaches in breast cancer treatment. [ABSTRACT FROM AUTHOR]

Background: Proliferative breast atypical lesions, including atypical ductal hyperplasia (ADH) and lobular intraepithelial neoplasms (LIN), represent benign entities that confer an elevated risk of ductal carcinoma in situ (DCIS) and invasive breast cancer (IBC). However, the timing of disease progression is variable and risk factors associated with the trajectory of disease are unknown. Methods: Patients diagnosed with ADH or LIN from 1992 to 2017 at an academic center were identified. Early progression was defined as DCIS or IBC diagnosed within 5 years following the initial atypia diagnosis. Unadjusted cancer-free survival was estimated using the Kaplan–Meier method. Demographics, clinicopathologic features, and use of chemoprevention were compared between the early and late development groups. Results: Overall, 418 patients were included—73.7% with ADH and 26.3% with LIN. Over a median follow up of 92.1 months, 71/418 (17.0%) patients developed IBC (57.7%) or DCIS (42.3%). Almost half (47.9%, 34/71) were diagnosed within 5 years of their initial atypia diagnosis, and 52.1% (37/71) were diagnosed after 5 years. Patient and atypia characteristics were not associated with rate of events or time to events. There was a trend of early events being more often ipsilateral (76.5% early vs. 54.1% late; p = 0.13) versus contralateral. Conclusions: In a large cohort of patients with breast atypia and long-term follow up, 17% experienced subsequent breast events, with approximately half of the events occurring within the first 5 years following the initial atypia diagnosis. Clinical features were not associated with the trajectory to subsequent events, supporting that atypia signals both local and overall malignancy risk. [ABSTRACT FROM AUTHOR]

Augmented reality (AR) games offer significant potential to enhance learning experiences, yet the impact of when these games are introduced during the educational process remains underexplored. This study explored how the timing of providing the AR game influenced learners' achievement, satisfaction and acceptance. Using a quasi‐experimental design, 68 second‐graders engaged with the AR game AR Easy Sign Language: Grams and Kilograms, either before class or in class. Additionally, perspectives from eight students, one teacher and 24 parents (from the before‐class group) were collected. Results indicated that providing the AR game in class significantly improved learners' achievement and acceptance compared to providing it before class. While overall satisfaction was unaffected by timing, students' cognitive focus differed: in‐class participants emphasised the game's educational value, whereas those using it before class viewed it more as an entertaining tool with educational functionality. Both the teacher and parents acknowledged the educational value of AR games but expressed concerns regarding the cost and potential health issues. This study contributes to theoretical understanding and practical implementation strategies for AR games in education, particularly in optimising their timing for maximal impact. Practitioner notes What is already known about this topic AR games integrate the advantages of augmented reality and games, enabling learners to interact with virtual and physical objects in a fun way, bringing a new dynamic to education. Prior research has shown that AR games contribute to the improved learning process and learning outcomes. However, applying technologies such as AR games to authentic educational contexts is still challenging, as it involves many decision‐making issues to be investigated. One key issue that remains unresolved is determining the optimal timing of providing AR games. What this paper adds Providing AR games in class significantly enhanced students' learning achievement and acceptance, emphasising the need to carefully time such interventions. The timing of providing AR games influenced students' cognition, with in‐class use promoting a focus on learning, while before‐class use emphasised entertainment. Teachers and parents acknowledged the educational value of AR games for students, but they had concerns regarding potential visual health risks and the associated costs. Implications for practice and/or policy Educators should determine the timing of providing AR games depending on the desired goal. Providing AR games before class allows students to focus more on the game experience while providing AR games in class allows for a focus on learning through the game and enhancing learning achievement. Students' cognition of technology may influence their usage and outcomes. Developers should design AR games with mechanisms that guide learners' cognition of educational content, while researchers should explore the effectiveness of such designs to achieve better learning outcomes. Educational institutions should select devices with built‐in eye protection features and enforce screen time limits to mitigate visual health risks, addressing concerns raised by teachers and parents. AR games incorporating sign language have the potential to improve students' learning achievement, holding promise for applications in special education. What is already known about this topic AR games integrate the advantages of augmented reality and games, enabling learners to interact with virtual and physical objects in a fun way, bringing a new dynamic to education. Prior research has shown that AR games contribute to the improved learning process and learning outcomes. However, applying technologies such as AR games to authentic educational contexts is still challenging, as it involves many decision‐making issues to be investigated. One key issue that remains unresolved is determining the optimal timing of providing AR games. What this paper adds Providing AR games in class significantly enhanced students' learning achievement and acceptance, emphasising the need to carefully time such interventions. The timing of providing AR games influenced students' cognition, with in‐class use promoting a focus on learning, while before‐class use emphasised entertainment. Teachers and parents acknowledged the educational value of AR games for students, but they had concerns regarding potential visual health risks and the associated costs. Implications for practice and/or policy Educators should determine the timing of providing AR games depending on the desired goal. Providing AR games before class allows students to focus more on the game experience while providing AR games in class allows for a focus on learning through the game and enhancing learning achievement. Students' cognition of technology may influence their usage and outcomes. Developers should design AR games with mechanisms that guide learners' cognition of educational content, while researchers should explore the effectiveness of such designs to achieve better learning outcomes. Educational institutions should select devices with built‐in eye protection features and enforce screen time limits to mitigate visual health risks, addressing concerns raised by teachers and parents. AR games incorporating sign language have the potential to improve students' learning achievement, holding promise for applications in special education. [ABSTRACT FROM AUTHOR]

Purpose: To determine the timing of symptomatic venous thromboemboli (VTE) in patients sustaining a pelvic and/or acetabular fracture. Secondly, to evaluate for any factors that may influence this timing. Methods: A retrospective cohort of 47 patients with acetabular and/or pelvic ring injuries who developed VTEs at a single academic level I trauma center were identified from 2012 to 2018. The chronology of VTE diagnosis in relation to date of injury, initial surgery, final surgery, and date of discharge was evaluated. Patients who developed VTEs were then evaluated based on known risk factors for VTE to determine if any of these affected timing. Results: Symptomatic VTEs were diagnosed in 3.8% of patients with pelvic and/or acetabular fractures. In patients who developed a thromboembolism, diagnosis occurred on average 21.5 (± 19.2), 20.7 (± 19.9), 9.8 (± 23.4), and 4.3 (± 27.6) days after injury, index procedure, final procedure, and date of discharge. 25% of patients developed VTE more than 4 weeks after their initial injury. No known risk factors effected the timing of VTE. Conclusion: The 2015 OTA expert panel recommends 4 weeks of anticoagulation for orthopedic trauma patients at high risk of VTE, which may be too short a duration. In our cohort, 25% of VTEs occurred greater than 4 weeks after injury. Additional research is needed to clarify the exact duration of anticoagulation after pelvic and acetabular fractures; however, surgeons may want to consider anticoagulating patients for greater than 4 weeks. Level of evidence: Level III—retrospective cohort. [ABSTRACT FROM AUTHOR]

Cerebral arteriovenous malformations (AVMs) are a challenging pathology in pediatric patients, carrying a high risk of morbidity and mortality. Treatment modalities include resection, endovascular embolization, and stereotactic radiosurgery. There is currently no consensus favoring one modality over another. Timing of multimodal therapy with embolization/stereotactic radiosurgery and resection is not well explored in the literature. We present a series of pediatric patients with AVMs, with special attention directed to the timing of treatment. Electronic medical records of all pediatric patients (<18 years old at treatment) with AVMs treated at our institution were retrospectively reviewed after institutional review board approval. Demographic information, AVM characteristics, treatment variables, and outcomes were recorded. In our cohort of 27 patients, 21 (77.8%) presented with a ruptured AVM. Of these patients, 6 (28.6%) had a Glasgow Coma Scale score of 3–10 and underwent treatment within 24 hours of presentation, and 10 (47.6%) with a Glasgow Coma Scale score of 12–15 were treated between 24 and 120 hours after presentation. The remaining 5 patients (23.8%) were treated 3 weeks to 14 months after AVM rupture. Regardless of rupture status, 96% of our cohort had a modified Rankin Scale score of 1–2 at most recent follow-up. We present our institution's experience with pediatric AVMs, focusing on the timing of treatment. Based on our experience, early treatment of AVMs seems to be safe and effective regardless of rupture status. [ABSTRACT FROM AUTHOR]

Breaststroke is the only competitive stroke characterised by propulsive discontinuity. It is consequently paramount that swimmers optimally coordinate limb movements in order to maintain the highest average velocity possible. The present study aimed to investigate the temporal patterns of elite breaststroke swimmers. 50 m long-course competition footage of (1) 20 male 100 m races, (2) 24 female 100 m races, (3) 15 male 200 m races, and (4) 27 female 200 m races from 2018 to 2020 were digitised and analysed. Six points within each stroke cycle were identified and used to calculate 15 temporal parameters. Analyses revealed multiple temporal pattern differences between groups based on sex and race distance. It is recommended that coaches individualise swimmers' breaststroke temporal patterns based on individual needs, strengths, and morphological characteristics. [ABSTRACT FROM AUTHOR]

How the migration behavior of long-lived birds develops throughout their life is still a research question in ornithology that is largely unanswered. Here, we analyzed GPS data of 70 juvenile Black Storks during the first 3 years of their migration to determine the influence of age and experience on migration patterns. We focused on the choice of the migration flyway, as well as the movements in the wintering area, and the changes in departure times with increasing age. Migratory routes of German Black Storks were divided into the western (82% of all tracked individuals) and eastern flyways (16%). The central migratory flyway through Italy or Greece was taken only by two individuals and never repeatedly. In addition, we found that the wintering area decreased by almost 60% during their first 3 years of life. In addition, spring departure dates from the wintering areas also became earlier with increasing age. However, we did not find changes in departures from the breeding area in autumn. Thus, our study shows that age and migration experiences have a considerable influence on essential migratory decisions in Black Storks. Further, it also demonstrates that older storks rely strongly on previous experiences to perform their migrations efficiently. [ABSTRACT FROM AUTHOR]

Background and purpose: The amplitude, timing, and determinants of improvement with available treatments are uncertain in chronic inflammatory demyelinating polyneuropathy (CIDP). Our primary objective was to quantify categorized outcomes with routine care. Methods: We retrospectively studied treatment response within 36 months from initiation in 112 consecutive subjects with CIDP. Response was classified into a proposed new "CIDP treatment‐response category" (CT‐RC), based on achieved endpoints. Determinants of the CT‐RC, of timing of maximum improvement, and of treatment discontinuation were ascertained. Results: The CT‐RC demonstrated high concurrent validity with current outcome measures. Thirty‐six subjects (32.1%) achieved a "complete response," 37 (33%) a "good partial response," 10 (8.9%) a "moderate partial response," and 15 (13.4%) a "poor partial response." Fourteen subjects (12.5%) were "nonresponsive." The CT‐RC was independently predicted only by age. Mean time to maximum improvement was 12.1 months (range = 1–36) and was not associated with any pretreatment covariate. Treatment discontinuation occurred in 24 of 62 (38.2%) partial responders and was only associated with shorter pretreatment disease duration. Nonresponders were older and received a similar number of treatments compared to responders. Conclusions: CT‐RC classification indicates persistent disability in >60% of treatment responders in CIDP. Timing of maximum improvement is variable, frequently delayed, and unpredictable. Treatment withdrawal without deterioration is achievable in approximately 40% of subjects and may be more likely with prompt treatment. Treatment withdrawal in partial responders and limited escalation in nonresponders suggest implication of physician‐ and patient‐related factors in suboptimal response. More effective treatments/treatment methods and better understanding of other factors influencing response are needed in CIDP. [ABSTRACT FROM AUTHOR]

Physical activity is universally acknowledged for its benefits to mental health; however, the specific intensities and timings that best benefit adolescents' mental health, crucial due to their significant influence on daily schedules, have not been thoroughly investigated. This study addresses the substantive research gap by exploring the varied effects of physical activity intensity (light versus moderate to vigorous) and timing (weekdays versus weekends and holidays) on adolescent mental health. Utilizing a large-scale longitudinal dataset (NT1 = 84,054; NT2 = 44,623) from 158 schools, this research describes the current state of adolescent physical activity and investigates the effects of physical activity on mental health outcomes, including positive (i.e., life satisfaction, positive mental health) and negative indicators (depression, anxiety), over a 6-month period. Participants were adolescents aged 9–19 years (mean age = 12.73 ± 2.43 years, 48.9% female), with the analysis adjusted for potential confounding factors. Results showed that as adolescents grow older, their engagement in moderate-to-vigorous physical activity during both weekdays and weekends/holidays tends to decrease, while light physical activity during weekdays increases. Multilevel regression analysis indicated that moderate-to-vigorous physical activity during weekends/holidays at Time 1 positively correlated with better mental health outcomes at Time 2 (six months later), featuring enhanced positive indicators and reduced negative ones. Moderate-to-vigorous physical activity on weekdays at Time 1 was positively linked to mental health at Time 2. Light physical activity during weekends/holidays at Time 1 positively predicted life satisfaction and positive mental health at Time 2. In contrast, light physical activity on weekdays at Time 1 negatively correlated with life satisfaction at Time 2. The study underscores the importance of promoting moderate-to-vigorous physical activity, particularly on weekends and holidays, to improve mental health outcomes among adolescents. [ABSTRACT FROM AUTHOR]

This study investigated the optimal timing for percutaneous coronary intervention (PCI) in patients with NSTEMI complicated by heart failure (HF). In total, 762 patients with NSTEMI and HF in a multicenter, prospective registry in South Korea were classified according to the Killip classification (Killip class 2, n = 414 and Killip class 3, n = 348) and underwent early (within 24 h) and delayed (after 24 h) PCI. The primary outcome was all-cause mortality which was further analyzed with landmark analysis with two months as a cut-off. Secondary outcomes were cardiovascular death, in-hospital cardiogenic shock (CS), readmission due to HF, and acute myocardial infarction during follow-up. Delayed PCI was associated with lower rates of 2-month mortality (6.1 % vs. 15.8 %, p = 0.007) and in-hospital CS (4.3 % vs. 14.1 %, p = 0.003), along with lower risks of 2-month mortality (hazard ratio [HR] = 0.38, 95 % confidence interval [CI] = 0.18–0.83, p = 0.014), in-hospital CS (HR = 0.29, 95 % CI = 0.12–0.71, p = 0.006) in multivariate Cox models of Killip class 3 patients. There was no statistical difference of incidence and risk of all predefined outcomes according to varying timing of PCI in Killip 2 patients. Based on these results, the timing of PCI in patients with NSTEMI complicated by HF should be determined based on HF severity. Delayed PCI should be considered in patients with NSTEMI and more severe HF. • In the COREA-AMI registry, 45.7% of the patients were treated with delayed PCI (> 24 h) for NSTEMI complicated by CHF. • The 2-month mortality analysis showed distinct associations between PCI timing and Killip classification (2 or 3). • Delayed PCI was associated with lower rates and risk of 2-month mortality and in-hospital CS in Killip class 3 patients. • There was no statistical difference of mortality and other outcomes according to timings of PCI in Killip 2 patients. [ABSTRACT FROM AUTHOR]

Child maltreatment (CM) is a major risk factor across the lifespan. While research on CM and its consequences has risen strongly during the last decades, research is mainly focused on the prevalence of types of CM incidents. As valid prevalence rates on timing and chronicity of CM are lacking to date, we aimed to assess the timing of experienced CM by describing the age of onset, duration, and prevalence at each year of age for each CM subtype in a population-based sample. Cross-sectional, observational study in a representative sample. Using different sampling steps including a random route procedure, a probability sample of the German population above the age of 16, encompassing 2514 persons (50.6% female, mean age: 50.08 years) was generated. Participants were asked about sociodemographic information in a face-to-face interview, CM was assessed using the ICAST-R questionnaire. The earliest mean age of onset was seen in neglect with 8.07 (±3.07) years for boys and 7.90 (±2.96) years for girls, while the mean age of onset for sexual abuse was in adolescence with 13.65 (±3.86) years for boys and 13.91(±3.17) years for girls. The overall duration of CM was lowest for sexual abuse with 2.12 (±2.01) years for boys and 2.35 (±1.73) years for girls, the highest duration was seen for emotional abuse with 4.00 (±3.54) years for boys and 4.21 (±3.77) years for girls. Our novel results provide important epidemiological information for prevention efforts. [ABSTRACT FROM AUTHOR]

Response latency is a critical parameter in studying human behavior, representing the time interval between the onset of stimulus and the response. However, different time between devices can introduce errors. Serial port synchronization signal can mitigate this, but limited information is available regarding their accuracy. Optical signals offer another option, but the difference in the positioning of optical signals and visual stimuli can introduce errors, and there have been limited reports of error reduction. This study aims to investigate methods for reducing the time errors. We used the Psychtoolbox to generate visual stimuli and serial port synchronization signals to explore their accuracy. Subsequently, we proposed a calibration formula to minimize the error between optical signals and visual stimuli. The findings are as follows: Firstly, the serial port synchronization signal presenting precedes visual stimulation, with a smaller lead time observed at higher refresh rates. Secondly, the lead time increases as the stimulus position deviates to the right and downwards. In Linux and IOPort(), serial port synchronization signals exhibited greater accuracy. Considering the poor accuracy and the multiple influencing factors associated with serial port synchronization signals, it is recommended to use optical signals to complete time synchronization. The results indicate that under the darkening process, the time error is – 0.23 ~ 0.08 ms (mean). This calibration formula can help measure the response latency accurately. This study provides valuable insights for optimizing experimental design and improving the accuracy of response latency. Although it only involves visual stimuli, the methods and results of this study can still serve as a reference. [ABSTRACT FROM AUTHOR]

Catheter-based interventions and surgical embolectomy represent alternatives to systemic fibrinolysis for patients with high-risk pulmonary embolism (PE) or those with intermediate-high-risk PE who deteriorate hemodynamically. They are indicated when systemic fibrinolysis is contraindicated or ineffective, or if obstructive shock is imminent. Extracorporeal membrane oxygenation can be added to reperfusion therapies or used alone for severe right ventricular dysfunction and cardiogenic shock. These advanced therapies complement but do not replace anticoagulation, which remains the cornerstone in PE management. This review summarizes the evidence and shares practical recommendations for the use of anticoagulant therapy before, during, and after acute PE interventions. [ABSTRACT FROM AUTHOR]

MicroRNAs are short non-coding RNA molecules that function as critical regulators of various biological processes through negative regulation of gene expression post-transcriptionally. Recent studies have indicated that microRNAs are potential biomarkers for ischemic stroke. In this review, we first illustrate the pathogenesis of ischemic stroke and demonstrate the biogenesis and transportation of microRNAs from cells. We then discuss several promising microRNA biomarkers in ischemic stroke in a context-specific manner from three dimensions: biofluids selection for microRNA extraction (Where), the timing of sample collection after ischemic stroke onset (When), and the clinical application of the differential-expressed microRNAs during stroke pathophysiology (What). We show that microRNAs have the utilities in ischemic stroke diagnosis, risk stratification, subtype classification, prognosis prediction, and treatment response monitoring. However, there are also obstacles in microRNA biomarker research, and this review will discuss the possible ways to improve microRNA biomarkers. Overall, microRNAs have the potential to assist clinical treatment, and developing microRNA panels for clinical application is worthwhile. [ABSTRACT FROM AUTHOR]

The results of a study of the downstream migration of juvenile pink salmon Oncorhynchus gorbuscha in 11 rivers of the Sakhalin and Iturup islands are presented. A large discrepancy has been established in the timing of migration, which corresponds to its known shift to earlier dates in the southern direction. The correlation has been calculated between the air temperature in months with its positive values throughout the periods of embryonic and larval development of pink salmon and the timing of migration of pink salmon juveniles in the rivers of the southeastern coast of the Sakhalin Island (r = −0.79, 14 generations) and Iturup Island (r = −0.68, 16 generations). The presence of this correlation shows that interannual changes in the timing and dynamics of the downstream migration of pink salmon juveniles within local areas are determined not only by the spring level and thermal regimes in the rivers, but also significantly by the general phenological shift in biological processes throughout the freshwater period of pink salmon development. The timing and dynamics of downstream migration within each local area are quite similar in different rivers in the same years. However, multiple differences can sometimes be observed between them in terms of the efficiency of reproduction, estimated through the downstream migration index (the ratio of the number of juveniles that migrated downstream to the number of spawners that entered the river for spawning). The reasons for such discrepancies are often obvious. They are generally determined by different densities of pink salmon aggregations on spawning grounds or by the destruction of the ground of spawning areas during autumn floods. It is very important to take into account such conditions when calculating the total number of juveniles that migrate downstream from rivers in a certain area, since this index seems to be more objective for estimating pink salmon stocks than the number of parents. [ABSTRACT FROM AUTHOR]

Background: The purpose of this research was to examine the probability of ipsilateral breast cancer recurrence in individuals whose RT was delayed after the first chemotherapy and surgery. Purpose: To analyze the effect of delaying RT for breast cancer patients (by more than 6 weeks after treatment). Methodology: A retrospective analysis comprised 136 female breast cancer patients treated at the Baghdad Centre for Radiation Oncology and Nuclear Medicine from 2021 to May 2022. External beam radiation was started more than 6 weeks after chemotherapy was finished for all patients who also had surgery. Clinical examination and ultrasound were part of the follow-up process. Results: Patients' ages varied from 28 to 71, and the majority (83%) had a mastectomy. The majority of cases (95.5%) were diagnosed as invasive ductal carcinoma on histopathology, with 49.6% being at stage 2 and 42.6% being at stage 3. Seventy-six percent of patients tested positive for hormones. Although 10 patients (7.35%) acquired distant metastases within 5 years, only 2 (1.47%) had local recurrence because of the delay in RT. Specifically, 91.1% had complete local control with no evidence of disease spread. Conclusion: Delaying RT by more than 6 weeks in patients with breast cancer did not substantially affect local control, according to the results of a new research, the first of its type in Iraq. [ABSTRACT FROM AUTHOR]

Incentives have been extensively studied in the management and policy literature, with most attention focusing on their type, magnitude, alignment, and effects. More recently, scholars paid attention to discounting issues and how these issues impact the effectiveness of incentives. Building on the nascent literature related to incentive timing, we argue that timing can offer an additional dimension to better characterize incentives and leverage their power by exploiting windows of opportunity. Using conceptual reasoning, we identify several mechanisms by which the timing of incentives can be used to increase their behavioral power. Specifically, well-timed (green) incentives can harness temporal landmarks, intermittence, immediacy and surprise effects, and intrinsic motivation reinforcement to reach environmental goals without significantly increasing the overall costs. We also indicate new avenues for further research such as designing a timing menu or considering time itself as an incentive. [ABSTRACT FROM AUTHOR]

Catastrophic antiphospholipid syndrome (CAPS) is a life-threatening condition of small-vessel thrombosis with acute multiple-organ involvement and visceral damage. In this report, we present a case of a patient with CAPS who is refractory to conventional therapy. For the first time in a patient with CAPS, marked C5b-9 formation was demonstrated on microvascular endothelial cells, suggesting the usefulness of therapeutic complement inhibition in this setting. Eculizumab, a C5-blocking monoclonal antibody, is remarkably effective in the treatment of different forms of thrombotic microangiopathy by controlling complement system hyperactivation. It halted the "thrombotic storm" and promptly achieved full recovery of thrombocytopenia. However, kidney function did not recover, possibly because eculizumabwas administered too late. Conceivably, the timing of treatment is crucial to achieving disease remission before irreversible structural damage occurs in target organs, thereby preventing their complete functional recovery. [ABSTRACT FROM AUTHOR]

Objectives: The study aimed to explore how terminally ill individuals in the United States approach medical aid in dying (MAID), including personal, interpersonal and structural factors that influence their decision-making processes. Methods: This embodied phenomenological study incorporated semi-structured (N = 9) interviews with seven terminally ill adults who received a prescription for MAID. Interviews occurred over Zoom between October 2021-January 2023 and was guided by Ashworth's framework for exploring phenomenological lifeworlds. Participants were invited to share perceptions of their lifeworlds in pursuit of MAID including values; embodied health, ability, and emotions; space and place in society; reflections on time/timing; and political and cultural discourse. Data analysis integrated Wertz's phenomenological psychological analysis methods. Results: The phenomenon of choosing MAID is an intricate juggling of lifeworlds between participants' embodied relationships, values, time and agency which lead to co-existing experiences of uncertainty and hard-won relief. Conclusion: Our findings contribute cutting-edge knowledge of the decisional tensions and triumphs terminally ill individuals encounter as they approach MAID and highlight practical implications for health and mental health providers in preparing psychoeducational support for those seeking MAID. [ABSTRACT FROM AUTHOR]

This study is an additional investigation of stratosphere–troposphere coupling based on the recent stratospheric winter descriptions in five distinct modes: January, February, Double, Dynamical, and Radiative. These modes, established in a previous study, categorize the main stratospheric winter typologies modulated by the timing of important sudden stratospheric warmings (SSWs) and final stratospheric warmings (FSWs). The novelty of this research is to investigate the Northern Annular Mode, mean sea level pressure (MSLP) anomalies in the Ural and Aleutian regions, and the decomposition of Eliassen–Palm flux into wavenumbers 1 and 2 within each mode. The results show that the January and Double modes exhibit similar pre-warming surface signals, characterized by Ural blocking and Aleutian trough events preceding weak polar vortex events. The January mode displays a positive MSLP anomaly of +395 hPa (−191 hPa) in the Ural (Aleutian) region in December, while the Double mode shows +311 hPa (−89 hPa) in November. These modes are primarily wave-1 driven, generating tropospheric responses via negative Arctic Oscillation patterns. Conversely, the February and Dynamical modes show opposite signals, with Aleutian blocking and Ural trough events preceding strong polar vortex events. In December, the February mode exhibits MSLP anomalies of +119 hPa (Aleutian) and −180 hPa (Ural), while the Dynamical mode shows +77 hPa and −184 hPa, respectively. These modes, along with important SSWs in February and dynamical FSWs, are driven by both wave-1 and wave-2 and do not significantly impact the troposphere. The Radiative mode's occurrence is strongly related to the Aleutian blocking presence. These findings confirm that SSW timing is influenced by specific dynamical forcing related to surface precursors and underscore its importance in subsequent tropospheric responses. This study establishes a connection between early winter tropospheric conditions and upcoming stratospheric states, potentially improving seasonal forecasts in the northern hemisphere. [ABSTRACT FROM AUTHOR]

The prediction of future events and the preparation of appropriate behavioural reactions rely on an accurate perception of temporal regularities. In dynamic environments, temporal regularities are subject to slow and sudden changes, and adaptation to these changes is an important requirement for efficient behaviour. Bayesian models have proven a useful tool to understand the processing of temporal regularities in humans; yet an open question pertains to the degree of flexibility of the prior that is required for optimal modelling of behaviour. Here we directly compare dynamic models (with continuously changing prior expectations) and static models (a stable prior for each experimental session) with their ability to describe regression effects in interval timing. Our results show that dynamic Bayesian models are superior when describing the responses to slow, continuous environmental changes, whereas static models are more suitable to describe responses to sudden changes. In time perception research, these results will be informative for the choice of adequate computational models and enhance our understanding of the neuronal computations underlying human timing behaviour. [ABSTRACT FROM AUTHOR]

It has been proposed that autistic people experience a temporal distortion whereby the temporal binding window of multisensory integration is extended. Research to date has focused on autistic children so whether these differences persist into adulthood remains unknown. In addition, the possibility that the previous observations have arisen from between-group differences in response bias, rather than perceptual differences, has not been addressed. Participants completed simultaneity judgements of audiovisual speech stimuli across a range of stimulus-onset asynchronies. Response times and accuracy data were fitted to a drift-diffusion model so that the drift rate (a measure of processing efficiency) and starting point (response bias) could be estimated. In Experiment 1, we tested a sample of non-autistic adults who completed the Autism Quotient questionnaire. Autism Quotient score was not correlated with either drift rate or response bias, nor were there between-group differences when splitting based on the first and third quantiles of scores. In Experiment 2, we compared the performance of autistic with a group of non-autistic adults. There were no between-group differences in either drift rate or starting point. The results of this study do not support the previous suggestion that autistic people have an extended temporal binding window for audiovisual speech. In addition, exploratory analysis revealed that operationalising the temporal binding window in different ways influenced whether a group difference was observed, which is an important consideration for future work. [ABSTRACT FROM AUTHOR]

Introduction: Specialists in poison information are responsible for following-up with exposure cases managed at healthcare facilities. However, the amount of time, call components, and barriers met when completing an initial healthcare facility follow-up call in which a large amount of data and clinical recommendations are shared is not well described. Methods: A retrospective observational study was conducted by randomizing healthcare facility initial follow-up calls from January to April 2022. One hundred and thirty calls that met the inclusion criteria were randomly selected. We recorded seven unique time intervals within each call. Day of the week, time of day, and variability amongst specialists in poison information were also assessed. Results: Initial follow-up calls took a median of 7.2 min. Most (67%) follow-up calls were directed to emergency departments. Barriers to completion of calls were most commonly due to the healthcare reporter being busy (37%) and specialists in poison information being placed on terminal hold (30%). There was variability between specialists in poison information in the time for healthcare reporter to share data (P < 0.0001), time for specialists in poison information recommendations (P = 0.0076), and total time (P = 0.0003). Discussion: Variability exists amongst specialists in poison information during periods of information exchange, particularly when the healthcare reporter is providing information and subsequently when the specialist in poison information is providing recommendations. Barriers to completing calls centered around healthcare reporter being busy or the specialist in poison information being placed on a terminal hold. There was no correlation with the time or day of the week. Conclusions: With notable variability in these calls during periods of intense communication of data and treatment recommendations, there are likely opportunities for specialists in poison information and poison center directors to work together to address variability and overcome barriers to completing initial hospital follow-up calls. Further studies to evaluate variability amongst specialists in poison information are the next steps in understanding this complex topic. [ABSTRACT FROM AUTHOR]

Behavioral interventions to improve self-control, preference for a larger-later (LL) reward over a smaller-sooner (SS) reward, involve experience with delayed rewards. Whether they involve timing processes remains controversial. In rats, there have been inconsistent results on whether timing processes may be involved in intervention-induced improvements in self-control. Interventions that improved self-control with corresponding timing improvements used fixed-interval (FI) delays, whereas interventions that failed to find corresponding timing improvements used fixed-time (FT) delays. The FI schedule includes a response contingency (active waiting), whereas the FT schedule delivers reward automatically (passive waiting). The present study compared the effects of FI and FT schedules in interventions and impulsive choice tasks to evaluate effects on self-control and timing behavior. The impulsive choice task evaluated preference for an SS option (one pellet after 10-, 15-, 20-, 25-, and 30-s delays) versus an LL option (two pellets after a 30-s delay). The intervention task included forced-choice SS (one pellet after 10 s) and LL (two pellets after 30 s) sessions under FI or FT schedules. FI schedules produced greater sensitivity to SS delay in the impulsive choice task. Both FI and FT interventions increased LL choices. Following choice testing, temporal bisection and peak interval tasks revealed better timing precision for rats with an FI delay experience. Overall, the FI choice contingency was associated with improved temporal attention and timing precision. [ABSTRACT FROM AUTHOR]

The midsession reversal task involves a simultaneous discrimination between stimuli S1 and S2. Choice of S1 but not S2 is reinforced during the first 40 trials, and choice of S2 but not S1 is reinforced during the last 40 trials. Trials are separated by a constant intertrial interval (ITI). Pigeons learn the task seemingly by timing the moment of the reversal trial. Hence, most of their errors occur around trial 40 (S2 choices before trial 41 and S1 choices after trial 40). It has been found that when the ITI is doubled on a test session, the reversal trial is halved, a result consistent with timing. However, inconsistent with timing, halving the ITI on a test session did not double the reversal trial. The asymmetry of ITI effects could be due to the intrusion of novel cues during testing, cues that preempt the timing cue. To test this hypothesis, we ran two types of tests after the regular training in the midsession reversal task, one with S1 and S2 choices always reinforced, and another with S1 always reinforced but S2 reinforced only after 20 trials when the ITI doubled or 40 trials when the ITI halved. For most pigeons, performance was consistent with timing both when the ITI doubled and when it was halved, but some pigeons appeared to follow strategies based on counting or on reinforcement contingencies. [ABSTRACT FROM AUTHOR]

To improve the positioning accuracy of the Loran system and meet the requirements of Loran/BDS integrated positioning and timing, it is necessary to enhance the traditional Loran hyperbolic positioning method, making its pseudorange calculation consistent with the BDS positioning and timing solution. The existing pseudorange algorithm based on the Andoyer-Lambert formula has issues such as strict initial value selection range and susceptibility to singularities during calculations. This study proposes a new Loran pseudorange calculation method based on the Vincenty distance formula and conducts a simulation analysis of it. The results show that, in the absence of noise interference, the positioning and timing errors of this pseudorange algorithm are close to zero, demonstrating high accuracy. When subjected to random noise with a standard deviation of less than 100 ns, the latitude and longitude errors are both less than 10 m, and the timing error is less than 10−4 ns, meeting the requirements of Loran positioning and timing. Compared to the pseudorange algorithm based on the Andoyer-Lambert formula, the one based on the Vincenty formula has comparable positioning longitude accuracy but superior timing accuracy. Moreover, the latter offers a wider range of initial value selection and can avoid more singularity issues during calculations. [ABSTRACT FROM AUTHOR]

Student evaluation of teaching (SET) involves numerous conceptual and methodological problems. This paper focuses on a specific methodological dilemma: whether to conduct SET surveys before or after the final examination. This decision is a critical administrative and practical issue that can affect the level and quality of SET results. To address this problem, a systematic literature search was initially performed. However, it found only 17 studies and inconclusive results. In the empirical component, a replication survey (n = 5,077) was conducted. It posed seven course-related questions to the same students before and after their final examination. A slightly higher but statistically significant (p < 0.001) average score was obtained in the after-examination survey (a 0.06 difference on a 1–5 scale). This increase was partly attributed to a positive examination experience. The overall test–retest correlation (r = 0.61) indicated relatively low reliability, suggesting that the before-examination survey better reflected students' attitudes. The data quality was also higher in the before-examination survey, although the before-examination survey could not properly assess the examination-related aspects of the course. From a methodological perspective, the most comprehensive insight seems to be derived from conducting SET surveys before the examination and following up with a brief after-examination survey. [ABSTRACT FROM AUTHOR]

The timing and order of species arrival have been shown to be a significant factor in the assembly of biotic communities. Therefore, understanding priority effects, which refer to the impact of an early‐arriving species on a later‐arriving one, can help us better predict community assembly processes. However, little is known about the role of phylogenetic distance (PD) in priority effects and how they are mediated by the biogeographic history (BH) and the life stages (LSs) of interacting species.To shed light on the role of PD in priority effects, we conducted a multispecies greenhouse experiment. We created 10 allopatric and 10 sympatric species pairs, representing a PD gradient between early‐ and late‐arriving species from 5 to 270 Myr in evolutionary history and tested the priority effect of early‐arriving species on the late‐arriving species at multiple LSs.We found evidence of stronger competition between closely related species, as late‐arriving plants produced less above‐ground biomass when the PD was low. However, priority effects varied across the development of late‐arriving plants, as there were no effects on seedling emergence and survival, independent of PD. Regardless of PD, the pairs of allopatric and sympatric species did not differ in their responses.Synthesis. While many studies have produced contradictory results regarding the effect of PD on plant–plant interactions, our study provides experimental evidence that priority effects can be stronger when PD is small. This effect was independent of BH but varied across different LSs of late‐arriving plants. The dependence of the effect of PD on the LS of late‐arriving species highlights the importance of the timing of interactions for the assembly of plant communities, which could also have significant implications for the fields of invasion and restoration ecology. [ABSTRACT FROM AUTHOR]

Objective: This study aimed to characterize the types and timing of repetitive head impact (RHI) exposures in individuals with moderate to severe traumatic brain injury (TBI) and to examine the effects of RHI exposures on mental health outcomes. Setting: TBI Model Systems National Database. Participants: 447 patients with moderate to severe TBI who reported RHI exposure between 2015 and 2022. Design: Secondary data analysis. Main Measures: RHI exposures reported on the Ohio State University TBI Identification Method (OSU TBI-ID) were characterized by exposure category, duration, and timing relative to the index TBI. Mental health outcomes were evaluated at the 5-year follow-up assessment using the Patient Health Questionnaire-9 (PHQ-9) for depression symptoms and the Generalized Anxiety Disorder-7 (GAD-7) for anxiety symptoms. Results: The majority of RHI exposures were sports-related (61.1%), followed by other causes (20.8%; including falls), repetitive violence/assault (18.8%), and military exposures (6.7%). Males predominantly reported sports and military exposures, while a larger proportion of females reported violence and falls. Sports exposures were most common before the index TBI, while exposures from falls and violence/abuse were most common after TBI. RHI exposures occurring after the index TBI were associated with higher levels of depression (β = 5.05; 95% CI, 1.59-8.50) and anxiety (β = 4.53; 95% CI, 1.02- 8.05) symptoms than exposures before the index TBI. Conclusion: The findings emphasize the need to consider RHI exposures and their interaction with TBI when assessing mental health outcomes. Understanding the prevalence and challenges associated with RHI post-TBI can inform targeted interventions and improve the well-being of individuals with TBI. Preventive measures and ongoing care should be implemented to address the risks posed by RHI, particularly in individuals with prior TBI, especially surrounding fall and violence/ abuse prevention. [ABSTRACT FROM AUTHOR]

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We present the Sparse Synchronous model (SSM) of computation, which allows a programmer to specify software timing more precisely than the traditional "heartbeat" of mainstream operating systems or the synchronous languages. SSM is a mix of semantics inspired by discrete event simulators and the synchronous languages designed to operate in resource-constrained environments such as microcontrollers. SSM provides precise timing prescriptions, concurrency, and determinism. We implement SSM in SSML, a toy language along with a runtime system that includes a scheduler, memory manager, and an interface that works with a real-time operating system to keep the model synchronized with the real world. Experimentally, we find our implementation is able to perform jitter-free I/O in the 10s of kHz on a microcontroller. [ABSTRACT FROM AUTHOR]

Research Summary: Scaling at the right time is a crucial challenge for startups. Conceptualizing "scaling" as the entrepreneurial process of acquiring and committing resources to implement the core business idea and expand the customer base, this study examines how scaling early may decrease imitation risk at the expense of increasing commitment risk. As startups typically hire managers and sales personnel when they begin to scale, we propose that this timing can be empirically measured by when startups first post these jobs. Leveraging a dataset of job postings, we find that early scalers are more likely to fail, but no evidence of a countervailing benefit in terms of successful exit. Additional analyses suggest that the commitment risk in scaling early outweighs the benefit of reducing imitation risk. Managerial Summary: In recent years, a few high‐growth startups (e.g., Facebook and Uber) that made their fortune by scaling early—an approach often referred to as "blitzscaling"—have received much interest among academics and practitioners. However, this study presents large‐sample evidence that scaling early is positively associated with a higher rate of firm failure, especially for platform companies. These findings imply that, despite its potential benefits of preventing imitation by competitors, scaling early can suppress startup performance by prematurely curtailing learning through experimentation and committing to a business idea that lacks product‐market fit. In sum, our work cautions startups against prioritizing scaling early before finding product‐market fit, and instead highlights the importance of spending sufficient time on experimentation before scaling. [ABSTRACT FROM AUTHOR]

Appendicitis is one of the most common abdominal emergencies. Evidence is controversial in determining if the in-hospital time delay to surgery can worsen the clinical presentation of appendicitis. This study aimed to clarify if in-hospital surgical delay significantly affected the proportion of complicated appendicitis in a large prospective cohort of patients treated with appendectomy for acute appendicitis. Patients were grouped into low, medium, and high preoperative risk for acute appendicitis based on the Alvarado scoring system. Appendicitis was defined as complicated in cases of perforation, abscess, or diffuse peritonitis. The primary outcome was correlation of in-hospital delay with the proportion of complicated appendicitis. The study includes 804 patients: 278 (30.4%) had complicated appendicitis and median time delay to surgery in low-, medium-, and high-risk group was 23.15 h (13.51–31.48), 18.47 h (10.44–29.42), and 13.04 (8.13–24.10) h, respectively. In-hospital delay was not associated with the severity of appendicitis or with the presence of postoperative complications. It appears reasonably safe to delay appendicectomy for acute appendicitis up to 24 h from hospital admission. Duration of symptoms was a predictor of complicated appendicitis and morbidity. Timing for appendicectomy in acute appendicitis should be calculated from symptoms onset rather than hospital presentation. [ABSTRACT FROM AUTHOR]

Abstract Background The age of Danish women giving birth to their first child has risen throughout the last 50 years, and the number of women and men who are having their first child when they are at advanced maternal or paternal age is increasing worldwide. Postponing parenthood is not unique to Denmark, as the same pattern is seen especially in other European and Western countries. The aim of this study was in a social media setting to explore reflections on the timing of motherhood among Danish women of reproductive age who not yet had children. Method This study was a qualitative study based on three online focus groups on Facebook. Twenty-six women of reproductive age discussed the timing of motherhood for three days in January 2020. Data were analyzed using Systematic Text Condensation. Results Three main themes were identified: ‘Life before parenthood’, ‘To plan for a child’ and ‘A life without children’. Several external and internal conditions influence whether and if so when women consider becoming mothers. Regarding the biological capacity for having children, women compare themselves with their female relatives and friends and colleagues regarding the social norms surrounding motherhood. Women with no children often experience either positive or negative pressure from family, friends, and colleagues regarding when to have children. Conclusion Several internal and external considerations influence when and if women become mothers. Social surroundings such as family, friends, and colleagues have an impact on women’s reproductive considerations in terms of pressure to have children in the future. Danish women tend to compare their reproductive capacity to their female relatives and compare the social norms surrounding motherhood to their female friends. Women in this study were positive towards discussing the timing of motherhood with other women of reproductive age on social media.

Defining plant development timing through seasonal growth and dormancy phases is a valuable proxy for studying climate change and serves as an annual bioindicator. However, current methods for determining the growing season vary due to species‐specific interpretations and differing understandings of its main drivers. Körner et al. (2023) introduced four non‐interchangeable definitions of growing seasons to clarify this complex issue. While some studies have paired different methods, none have simultaneously applied a full set of methods at the individual tree or species level. Here, I aim to present a new perspective to understanding growing season timing by focusing on all facets of above‐ground tree growth and measurable biological and phenological markers. This approach calls for simultaneous, continuous monitoring during active and dormancy periods on the same trees and across different species at a large spatial scale. The goal is to comprehensively understand each method's errors, temporal lags, and the factors determining each growing season, as defined by Körner et al. (2023, Ecology Letters, 26, 1277). Accurate estimation of growing season timing can reshape our understanding of its environmental drivers, improve terrestrial ecosystem models, assess the impact of climate change on tree growth, determine the biological zero for various species, verify remote sensing indices and forecast species distribution. [ABSTRACT FROM AUTHOR]