scholarly journals Adding RFC 4814 Random Port Feature to Siitperf: Design, Implementation and Performance Estimation

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Gábor Lencse
Keyword(s):  
Performance Estimation ◽  
Free Software ◽  
Device Under Test ◽  
Distributed Source ◽  
Ipv6 Network ◽  
Significant Difference ◽  
Test Frame ◽  
And Performance ◽  
Destination Port

Siitperf is the World’s first free software RFC 8219 compliant SIIT (also called stateless NAT64) tester written in C++ using DPDK, which is also suitable for benchmarking IPv4 / IPv6 network interconnect devices in RFC 2544 / RFC 5180 compliant ways. Originally, siitperf followed RFC 2544 Appendix C.2.6.4 test frame format resulting in “hard coded” source and destination UDP port numbers. RFC 4814 Section 4.5 recommended random, uniformly distributed source and destination port numbers, which can make a very significant difference, when the DUT (Device Under Test) has multiple CPU cores, what is very common today. Therefore, adding this feature to siitperf is essential to be able to produce meaningful benchmarking results. In this paper, we disclose the design, implementation and performance estimation of this extension of siitperf.

Exploring The Effect of Visual Information Degradation on Human Perception and Performance In A Human-Telerobot System

2020 ◽  
Vol 64 (1) ◽  
pp. 1302-1307
Author(s):  
Richard Stone ◽  
Minglu Wang ◽  
Thomas Schnieders ◽  
Esraa Abdelall
Keyword(s):  
Visual Information ◽  
Human Perception ◽  
Low Level ◽  
Hit Rate ◽  
Word Level ◽  
Level Of Automation ◽  
Significant Difference ◽  
Human Operators ◽  
And Performance ◽  
High Level

Human-robotic interaction system are increasingly becoming integrated into industrial, commercial and emergency service agencies. It is critical that human operators understand and trust automation when these systems support and even make important decisions. The following study focused on human-in-loop telerobotic system performing a reconnaissance operation. Twenty-four subjects were divided into groups based on level of automation (Low-Level Automation (LLA), and High-Level Automation (HLA)). Results indicated a significant difference between low and high word level of control in hit rate when permanent error occurred. In the LLA group, the type of error had a significant effect on the hit rate. In general, the high level of automation was better than the low level of automation, especially if it was more reliable, suggesting that subjects in the HLA group could rely on the automatic implementation to perform the task more effectively and more accurately.

scholarly journals Prospective study to assess the tissue response to HPC-coated p48 flow diverter stents compared to uncoated devices in the rabbit carotid artery model

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Tim Lenz-Habijan ◽  
Pervinder Bhogal ◽  
Catrin Bannewitz ◽  
Ralf Hannes ◽  
Hermann Monstadt ◽  
...  
Keyword(s):  
Foreign Body ◽  
Flow Diverter ◽  
Foreign Body Response ◽  
Tissue Response ◽  
Acute Setting ◽  
Significant Difference ◽  
And Performance ◽  
Surface Modified ◽  
Common Carotid Arteries

Abstract Background Flow diverters (FDs) are widely used in the treatment of intracranial aneurysms, but the required medication increases the risk of haemorrhagic complications and limits their use in the acute setting. Surface modified FDs may limit the need for dual antiplatelet therapy (DAPT). Hydrophilic polymer coating (HPC) may reduce the need of medication. Methods This explorative study, approved by the local authorities and the local welfare committee, compared stent behaviour and overall tissue response between HPC-coated FDs and uncoated FDs, both implanted into the common carotid arteries of eight New Zealand white rabbits. Endothelialisation, inflammatory response, and performance during implantation were assessed. Angiographic follow-up was performed to observe the patency of the devices after implantation and after 30 days. Histological examinations were performed at 30 days to assess foreign body reaction and endothelialisation. Kruskal-Wallis and Wilcoxon tests were used to compare non-parametric variables. Results Angiography showed that both coated and uncoated FDs performed well during implantation. All devices remained patent during immediate follow-up and after 30 days. Histopathology showed no significant difference in inflammation within the vessel wall between the two cohorts (2.12 ± 0.75 vs. 1.96 ± 0.79, p = 0.7072). Complete endothelialisation of the stent struts was seen with very similar (0.04 ± 0.02 mm vs. 0.04 ± 0.03 mm, p = 0.892) neoendothelial thickness between the two cohorts after 30 days. Conclusion Taking into account the limitation in sample size, non-significant differences between the HPC-coated and uncoated FDs regarding implantation, foreign body response, and endothelialisation were found.

scholarly journals Awareness and Performance towards Proper Use of Disinfectants to Prevent COVID-19: The Case of Iran

2021 ◽  
Vol 18 (4) ◽  
pp. 2099 ◽  
Author(s):  
Zahra Safari ◽  
Reza Fouladi-Fard ◽  
Razieh Vahidmoghadam ◽  
Mohammad Raza Hosseini ◽  
Abolfazl Mohammadbeigi ◽  
...  
Keyword(s):  
Training Programs ◽  
Health Department ◽  
Public Places ◽  
Incidence Data ◽  
Significant Difference ◽  
And Performance ◽  
Arcview Gis ◽  
Spearman’S Correlation ◽  
Good Range ◽  
Awareness Level

This study aimed to assess the awareness and performance of Qom citizens towards using disinfectants and compared its relationship with geographical distribution of COVID-19 outbreak in Qom, Iran. The study was conducted by a researcher-made questionnaire during April and May, 2020. COVID-19 incidence data for each district of city was obtained from health department of Qom province. Data were analyzed using Excel, SPSS and ArcView (GIS) softwares. It was found that the highest level of citizens’ awareness (52%) was in the weak range while their performance (56%) was in the good range. According to Spearman’s correlation analysis, there was a strong correlation (rho 0.95) between the total mean of awareness and performance (p < 0.01). The highest incidence rate of COVID-19 was in district 7 which had the lowest mean score in both awareness and performance. In addition, the results of ANOVA (LSD—least significant difference) showed that there was a significant difference (p < 0.05) between district 7—with lower mean scores in awareness and performance—and other districts. Overall, it is concluded that citizens’ awareness level was lower than that of their performance. This conclusion not only calls for more training programs to be implemented in public places, schools, universities and governmental offices, but it also necessitates maintaining a proper and timely training about using disinfectants.

scholarly journals Effect of Engaging Trainees by Assessing Peer Performance: A Randomised Controlled Trial Using Simulated Patient Scenarios

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Charlotte Loumann Krogh ◽  
Charlotte Ringsted ◽  
Charles B. Kromann ◽  
Maria Birkvad Rasmussen ◽  
Tobias Todsen ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Global Rating ◽  
Training Performance ◽  
Significant Difference ◽  
Training Format ◽  
Peer Performance ◽  
And Performance ◽  
Randomised Controlled

Introduction. The aim of this study was to explore the learning effect of engaging trainees by assessing peer performance during simulation-based training.Methods. Eighty-four final year medical students participated in the study. The intervention involved trainees assessing peer performance during training. Outcome measures were in-training performance and performance, both of which were measured two weeks after the course. Trainees’ performances were videotaped and assessed by two expert raters using a checklist that included a global rating. Trainees’ satisfaction with the training was also evaluated.Results. The intervention group obtained a significantly higher overall in-training performance score than the control group: mean checklist score 20.87 (SD 2.51) versus 19.14 (SD 2.65)P=0.003and mean global rating 3.25 SD (0.99) versus 2.95 (SD 1.09)P=0.014. Postcourse performance did not show any significant difference between the two groups. Trainees who assessed peer performance were more satisfied with the training than those who did not: mean 6.36 (SD 1.00) versus 5.74 (SD 1.33)P=0.025.Conclusion. Engaging trainees in the assessment of peer performance had an immediate effect on in-training performance, but not on the learning outcome measured two weeks later. Trainees had a positive attitude towards the training format.

scholarly journals Characterization and Performance Estimation of a MEMS Spirometer

2016 ◽  
Vol 168 ◽  
pp. 1020-1023 ◽  
Author(s):  
Sahar Habibiabad ◽  
Yeşim Serinağaoğlu Doğrusöz ◽  
Mustafa İlker Beyaz
Keyword(s):  
Performance Estimation ◽  
And Performance

scholarly journals The impact of image and performance enhancing drugs on bi-ventricular structure and function in strength-trained athletes and the association to fat-free mass

2021 ◽  
Vol 28 (Supplement_1) ◽  
Author(s):  
B Morrison ◽  
N Chester ◽  
R Mcgregor-Cheers ◽  
G Kleinnibbelink ◽  
C Johnson ◽  
...  
Keyword(s):  
Allometric Scaling ◽  
Strain Imaging ◽  
Fat Free Mass ◽  
Composition Analysis ◽  
Lv Mass ◽  
Significant Difference ◽  
And Performance ◽  
Performance Enhancing Drugs ◽  
The Impact ◽  
Performance Enhancing

Abstract Funding Acknowledgements Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): Canadian Institute of Health Research Michael Smith Foreign Study Supplement Background Image and performance enhancing drugs (IPED) cause cardiac enlargement and dysfunction. Previous work has not assessed impact of user status (current [CU] vs. past [PU]) or allometric scaling cardiac dimensions for individual differences in fat-free mass (FFM). Purpose To investigate CU and PU of IPED and allometric scaling on LV and RV remodeling in strength-trained athletes. Methods Thirty-four (29 ± 6 years; 82% male) strength-trained athletes were recruited. Fourteen were CU, 9 PU and 11 non-users (NU) of IPEDs.  Participants underwent bioelectric impedance body composition analysis, IPED and training questionnaire and 2D echocardiography with strain imaging. All structural data was allometrically scaled to FFM according to the laws of geometric similarity. Results CU and PU had significantly higher FFM compared to NU (82.4 ± 10.1 kg vs. 72.0 ± 6.3 kg vs. 58.2 ± 14.0 kg). Absolute values of all RV and LV size were larger between CU and NU. LV mean wall thickness (MWT) was larger in CU compared to PU but there were no differences between PU and NU. Allometric scaling eliminated all differences with exception of LV mass and LVMWT. LVEF was significantly lower in CU and PU compared to NU (55 ± 3 vs. 57 ± 4 vs. 61 ± 4) whilst LV GLS was lower in CU compared to PU and NU and LV GCS was lower in CU compared to NU but not PU. There was no significant difference between groups for RV functional indices. Conclusion  Strength-trained athletes currently using IPEDs have bi-ventricular enlargement as well as reduced LV function. Allometric scaling highlights that increased size is partially associated with a larger FFM, with exception of LVMWT which is independently increased through IPED use. PUs demonstrate reverse structural remodeling whilst functional differences partially remain. CU PU NU RVD1 (mm) 45 ± 5* 43 ± 6 37 ± 6 Scaled RVD1 (mm/kg^0.33) 10.5 ± 0.9 10.4 ± 1.5 9.7 ± 1.0 LVd (mm) 58 ± 7* 55 ± 4 50 ± 4 Scaled LVd (mm/kg^0.33) 13.4 ± 1.2 13.3 ± 0.7 13.1 ± 0.6 MWT (mm) 10 ± 1*” 8 ± 1 8 ± 1 Scaled MWT (mm/kg^0.33) 2.3 ± 0.2*” 2.0 ± 0.1 2.0 ± 0.2 LVEDV (ml) 169 ± 42* 135 ± 28 116 ± 28 Scaled LVEDV (ml/kg) 2.0 ± 0.4 1.9 ± 0.3 2.0 ± 0.2 LV Mass (g) 255 ± 85*” 179 ± 30 137 ± 40 LV mass index (g/kg) 3.1 ± 0.8* 2.5 ± 0.3 2.4 ± 0.4 * CU and NU “ CU and PU ^ PU and NU Abstract Figure. Myocardial strain imaging

Impact of PICU Admission on Neurocognitive Function in Children

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Rasha Hussein Aly ◽  
Ahmed Rezk Ahmed ◽  
Raghda Zaitoun ◽  
Sarah Mohamed Nabil Ai-Saeed
Keyword(s):  
Pediatric Intensive Care ◽  
Scoring Systems ◽  
Cognitive Outcome ◽  
Neurocognitive Performance ◽  
Iq Testing ◽  
Significant Difference ◽  
Iq Scores ◽  
And Performance ◽  
And Gender ◽  
The Impact

Abstract Objective To study the impact of admission to a pediatric intensive care unit (PICU) on children's neurocognitive performance. Methods A case–control observational study including 50 children & adolescents and 75 age and gender matched children and adolescents.The study subjects underwent formative IQ testing using the Stanford Binet IQ test 3 months after discharge from the PICU. Results 27 males and 23 females with a mean age of 6.98 years were included in the study. Almost two thirds of the cases were admitted to the PICU post operatively (surgical causes). More than half of the cases needed sedation, 38% needed mechanical ventilation and 12% needed inotropic support. There was no statistically significant difference between cases and controls are regard IQ scores (total, verbal and performance IQ scores), neither was there a difference between medical and surgical cases. Data from similar pediatric cohorts is conflicting. Conclusion PICU does not seem to affect cognitive outcome in pediatric survivors. Further long term studies using standard scoring systems and time points of assessment are required.

Application and performance estimation of Mg/CO2 engine on Mars

2021 ◽  
Author(s):  
Mengzhe Li ◽  
Chunbo Hu ◽  
Zhiqin Wang ◽  
Yue Li ◽  
Jiaming Hu ◽  
...  
Keyword(s):  
Performance Estimation ◽  
And Performance
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