Explore the vast range of titles available.

Traffic from distributed training of machine learning (ML) models makes up a large and growing fraction of the traffic mix in enterprise data centers. While work on distributed ML abounds, the network traffic generated by distributed ML has received little attention. Using measurements on a testbed network, we investigate the traffic characteristics generated by the training of the ResNet-50 neural network with an emphasis on studying its short-term burstiness. For the latter we propose metrics that quantify traffic burstiness at different time scales. Our analysis reveals that distributed ML traffic exhibits a very high degree of burstiness on short time scales, exceeding a 60:1 peak-to-mean ratio on time intervals as long as 5~ms. We observe that training software orchestrates transmissions in such a way that burst transmissions from different sources within the same application do not result in congestion and packet losses. An extrapolation of the measurement data to multiple applications underscores the challenges of distributed ML traffic for congestion and flow control algorithms.

Hip surgery is a critical medical procedure that necessitates specialized postoperative care. The knowledge, attitudes, and practice of family caregivers are pivotal in ensuring patient recovery and minimizing complications. This study is aimed at exploring these three key aspects among caregivers. This descriptive-analytical study included 215 family caregivers selected through convenience sampling from Shahid Beheshti Hospital in Kashan. The data collection tool was a researcher-developed questionnaire consisting of four sections: demographic characteristics, knowledge, attitudes, and practice (KAP). Data analysis was performed using SPSS Version 26, employing descriptive statistics (mean and standard deviation) and inferential statistics (Pearson correlation, independent -test, ANOVA, and linear regression). Among the caregivers, 69.8% were female and 30.2% were male, with the majority (41.9%) aged between 42 and 51 years, and 33.5% holding a diploma. The mean attitude score (84.82 ± 5.22) was higher than both the practice score (78.65 ± 5.14) and the knowledge score (74.68 ± 6.29). The strongest and most direct correlation was found between practice and knowledge ( < 0.001, = 0.422). The variables of knowledge, Iranian nationality, and caregiving history had the most significant impact on improving caregiving behavior, collectively accounting for 31% of the behavioral changes ( = 0.312). Enhancing caregiver knowledge, along with factors such as Iranian nationality and caregiving history, plays a crucial role in improving patient care behavior. It is recommended to develop targeted training programs for inexperienced and non-Iranian caregivers to enhance the quality of care provided.

We report the results of a bibliometric study of 696 empirical articles (EAs) published in TESOL Quarterly (TQ) over its lifespan (1967-2019). We report overall and periodic reviews (1967-1979, 1980-1989, 1990-1999, 2000-2009, 2010-2019) concerning the following themes: (1) contexts and participants, (2) research foci and theoretical orientations, and (3) research methodology and data sources. A typical article was written by a single author addressing a learning/teaching English issue related to undergraduates in US universities. The most common research foci were instruction, learning, and assessment. A quarter of the articles did not have a specifiable theoretical orientation, and for those that had, the main theoretical orientations were linguistic/scientific, linguistic/cognitive, and social. The most frequently used research methodologies were quantitative, qualitative, and eclectic, and the top three data sources used by researchers were elicitation, multiple sources, and observation. Based on the findings, we make suggestions for future research in TESOL. Overall, the present review and analysis of published EAs give readers a birds-eye view of the research gravity in TQ over the last 52 years.

Background Dexmedetomidine, an α2 agonist, has well-known anesthetic and analgesic-sparing effects. We designed this study to evaluate the effect of intraoperative dexmedetomidine infusion on intra operative blood loss and postoperative pain in functional endoscopic sinus surgery. Methods This prospective cohort study included 90 patients planning to undergo endoscopic sinus surgery, who were randomly divided into three groups. 2 to 2.5 mg/kg of propofol was used in all groups to induce anesthesia. One group received dexmedetomidine 0.2 μg/kg per hour infusion whereas the other group received dexmedetomidine 0.5 μg/kg per hour infusion. The control group received normal saline infusion. Results The mean age of patients was 41.02 ± 11.93. 33 patients in the dexmedetomidine 0.2 μg/kg/h group, 30 patients in the dexmedetomidine 0.5 μg/kg/h group and 27 patients in the placebo group. The lowest amount of bleeding was related to the dexmedetomidine 0.5 μg/kg/h group. The volume of bleeding between the three groups was significantly different ( p  = 0.012). The satisfaction of the surgeon in the dexmedetomidine 0.5 μg/kg/h group was more than other groups. There was a significant relationship between the satisfaction of the surgeon and the treatment groups ( p  < 0.001). The lowest duration of surgery was related to the dexmedetomidine 0.2 μg/kg/h group. The most Trinitroglycerin (TNG) consumption was in the placebo group and the highest dose of labetalol was in the dexmedetomidine 0.5 μg/kg/h group. There was no significant difference in the TNG and labetalol consumption between three groups. The lowest consumption of morphine and pethidine in the dexmedetomidine 0.5 μg/kg/h group. Conclusions Infusion of dexmedetomidine 0.5 μg/kg/h decreased blood loss and consumption of morphine and pethidine in patients who underwent endoscopic sinus surgery.