83 research outputs found
AUTHOR CORRECTION - ERS International Congress 2019:highlights from Best Abstract awardees
No full textLorna E. Latimer, Marieke Duiverman, Mahmoud I. Abdel-Aziz, Gulser Caliskan, Sara M. Mensink-Bout, Alberto Mendoza-Valderrey, Aurelien Justet, Junichi Omura, Karthi Srikanthan, Jana De Brandt. Breathe 2019; 15: e143–e149. This article from the December 2019 issue of Breathe was published with an error in the name of one of the authors. The corrected author list is shown above. The article has been corrected and republished online.</p
Parametrized cosmological mass maps dataset
No full textParametrized cosmological mass maps dataset
This dataset consists of the non-tomographic training and testing set without noise and intrinsic alignments.
It was introduced in the following paper
Fluri, Janis, et al. "Cosmological constraints with deep learning from KiDS-450 weak lensing maps." Physical Review D 100.6 (2019): 063514.
Furthermore, this dataset is released with the following paper:
Perraudin, Nathanaël, et al. "Emulation of cosmological mass maps with conditional generative adversarial networks." arXiv preprint arXiv:2004.08139 (2020).
Code related to this dataset can be found in https://renkulab.io/projects/nathanael.perraudin/darkmattergan
Description
The simulation grid consists of different cosmologies assuming a flat LambdaCDM universe.
Each of these 57 configurations was run with different values of Omega_m and sigma_8, resulting in the following parameter grid.| Omega_m, sigma_8
0.101, 1.304
0.102, 1.125
0.103, 0.947
0.120, 1.178
0.123, 1.006
0.127, 0.836
0.137, 1.230
0.142, 1.063
0.148, 0.900
0.154, 1.281
0.156, 0.741
0.161, 1.119
0.169, 0.961
0.171, 1.331
0.178, 0.807
0.179, 1.173
0.188, 1.019
0.189, 0.659
0.196, 1.225
0.199, 0.870
0.207, 1.075
0.212, 0.727
0.219, 0.930
0.225, 1.129
0.227, 0.591
0.233, 0.791
0.238, 0.988
0.250, 0.658
0.254, 0.852
0.257, 1.043
0.269, 0.534
0.271, 0.723
0.273, 0.910
0.291, 0.601
0.291, 0.783
0.292, 0.966
0.311, 0.842
0.312, 0.664
0.314, 0.487
0.330, 0.898
0.332, 0.724
0.335, 0.552
0.352, 0.782
0.356, 0.614
0.370, 0.838
0.376, 0.673
0.382, 0.510
0.395, 0.730
0.402, 0.570
0.413, 0.784
0.421, 0.628
0.431, 0.475
0.440, 0.683
0.450, 0.533
0.458, 0.737
0.469, 0.589
0.487, 0.643
Each zip file in the dataset corresponds to 1 of these combinations and contains 12 files containing 1000 images.
The source galaxy redshift distribution corresponding to these maps is the full, non-tomographic redshift distribution n(z) from Fluri et. al.
The projected matter distribution was pixelised into images of size 128px x 128px, which correspond to 5deg x 5deg of the sky.
Eventually, the resulting dataset consists of 57 sets of 12'000 sky convergence maps for a total of samples.
Citations
If you use this dataset, please cite:
@article{perraudin2020emulation,
title={Emulation of cosmological mass maps with conditional generative adversarial networks},
author={Perraudin, Nathana{\"e}l and Marcon, Sandro and Lucchi, Aurelien and Kacprzak, Tomasz},
journal={arXiv preprint arXiv:2004.08139},
year={2020}
}
and
@article{fluri2019cosmological,
title={Cosmological constraints with deep learning from KiDS-450 weak lensing maps},
author={Fluri, Janis and Kacprzak, Tomasz and Lucchi, Aurelien and Refregier, Alexandre and Amara, Adam and Hofmann, Thomas and Schneider, Aurel},
journal={Physical Review D},
volume={100},
number={6},
pages={063514},
year={2019},
publisher={APS}
Pediatric endoscopic subcutaneous mastectomy (pesma) with liposuction in adolescents with gynecomastia
No full textBackground: Surgical techniques for treatment of gynecomastia are increasingly less invasive. We described technical standardization of pediatric endoscopic subcutaneous mastectomy (PESMA) with liposuction. Methods: All adolescents with primary gynecomastia, operated using PESMA with liposuction over the period June 2014-July 2021, were included. The video recording of procedures was analyzed to standardize the operative technique. After patient installation, 3 trocars were placed on the mid-axillary line. The technique included 5 steps: (1) subcutaneous injection of lipolysis solution and liposuction; (2) creation of working space using an inflated balloon; (3) gland dissection using 5-mm sealing device; (4) specimen extraction through the largest trocar orifice; and (5) placement of suction drainage tube. Results: Twenty-four male adolescents, operated for Simon's grade 2B and 3 gynecomastia using PESMA with liposuction over the study period, were included. Mean patient age was 16 years (range 15-18). Gynecomastia was bilateral in 19/24 (79.2%) and unilateral in 5/24 (20.8%). One (4.1%) conversion to open was reported. The mean operative time was 87 min (range 98-160) for unilateral and 160 min (range 140-250) for bilateral procedure. The mean length of stay was 2.2 days (range 1-4). Patients wore a thoracic belt for 15 up to 30 days postoperatively. Post-operative complications occurred in 5/24 (20.8%): 2- or 3 mm second-degree burns in 4 (16.7%) and subcutaneous seroma in 1 (4.1%). All complications were Clavien 2 grade and did not require further treatment. Aesthetic outcomes were very good in 21/24 (87.5%). Three (12.5%) boys had persistent minimal breast asymmetry but did never perceive it negatively. Conclusion: PESMA combined with liposuction was feasible and safe for surgical treatment of gynecomastia in this selected cohort of patients. Although challenging, this procedure provided good aesthetic results, with no scars on the anterior thoracic wall. Standardization of the operative technique was a key point for successful outcome
Cosmological N-body simulations: a challenge for scalable generative models: Tensorflow checkpoints
No full text<p><strong>Tensorflow checkpoints: Cosmological N-body simulations: a challenge for scalable generative models</strong></p>
<p>This corresponds to the Tensorflow checkpoints for the experiments in the paper <strong>Cosmological N-body simulations: a challenge for scalable generative models</strong> by Nathanaël Perraudin, Ankit Srivastava, Aurelien Lucchi, Tomasz Kacprzak, Thomas Hofmann, Alexandre Refregier, Adam Amara.</p>
<pre><code>@inproceedings{perraudin2019cosmological,
title = {Cosmological N-body simulations: a challenge for scalable generative models},
author = {Nathana\"el, Perraudin and Ankit, Srivastava and Kacprzak, Tomasz and Lucchi, Aurelien and Hofmann, Thomas and R{\'e}fr{\'e}gier, Alexandre},
year = {2019},
archivePrefix = {arXiv},
eprint = {1908.05519},
url = {https://arxiv.org/abs/1908.05519},
}
</code></pre>
<p>Please check the assotiated github page <a href="https://github.com/nperraud/3DcosmoGAN">https://github.com/nperraud/3DcosmoGAN</a> for additional information.</p>
<p>This corresponds to the Tensorflow checkpoints for the experiments in the paper<br>
**Cosmological N-body simulations: a challenge for scalable generative models** by<br>
Nathanaël Perraudin, Ankit Srivastava, Aurelien Lucchi, Tomasz Kacprzak, Thomas Hofmann, Alexandre Refregier, Adam Amara.</p>
<p>Please check the assotiated github page <a href="https://github.com/nperraud/3DcosmoGAN">https://github.com/nperraud/3DcosmoGAN</a> for additional information.</p>
Current trends in 2021 in surgical management of vesico-ureteral reflux in pediatric patients: results of a multicenter international survey on 552 patients
No full textBackground: The selection of best surgical approach for treatment of vesico-ureteral reflux (VUR) in the pediatric population remains debated. This study aimed to report the results of a multicenter survey about the current trends in surgical management of pediatric VUR. Methods: An online questionnaire-based survey was performed, with participation of 6 international institutions. All children (age <18 years) affected by primary III-V grade VUR, who were operated over the last 5 years, were included. The incidence of each VUR intervention, patients' demographics and outcomes were analyzed. Results: A total of 552 patients (331 girls), with a median age of 4.6 years (range 0.5-17.6), were included. Deflux® injection (STING) was the most common technique (70.1%). The multicenter success rate after single treatment was significantly lower after STING (74.4%) compared with the other treatments [p=0.001]. Persistent VUR rate was significantly higher after STING (10.8%) compared with the other treatments [p=0.03]. Choosing endoscopy over surgery mean reducing Clavien Dindo grade 2 complications by 5% but increasing redo procedure rate by 7%. STING was the most cost-effective option. Conclusions: This survey confirmed that the choice of the technique remains based on surgeon's preference. Deflux® injection currently represents the first line therapy for primary VUR in children and the role of surgical ureteral reimplantation is significantly reduced. STING reported acceptable success rate, less post-operative complications and lower costs but higher failure and re-operation rates and related costs compared with the other surgical approaches. The adoption of laparoscopy and robotics over open reimplantation remains still limited
Author Correction: QUAREP-LiMi: a community endeavor to advance quality assessment and reproducibility in light microscopy
No full textComparison of a piezoceramic transducer and an EMAT for the omnidirectional transduction of SH0
No full textA hierarchical approach for splitting truck platoons near network discontinuities
No full textTruck platooning has attracted substantial attention due to its pronounced benefits in saving energy and promising business model in freight transportation. However, one prominent challenge for the successful implementation of truck platooning is the safe and efficient interaction with surrounding traffic, especially at network discontinuities where mandatory lane changes may lead to the decoupling of truck platoons. This contribution puts forward an efficient method for splitting a platoon of vehicles near network merges. A model-based bi-level control strategy is proposed. A supervisory tactical strategy based on a first-order car-following model with bounded acceleration is designed to maximize the flow at merge discontinuities. The decisions taken at this level include optimal vehicle order after the merge, new equilibrium gaps of automated trucks at the merging point, and anticipation horizon that the platoon members start to track the new equilibrium gaps. The lower-level operational layer uses a third-order longitudinal dynamics model to compute the optimal truck accelerations so that new equilibrium gaps are created when merging vehicles start to change lane and the transient maneuvers are efficient, safe and comfortable. The tactical decisions are derived from an analytic car-following model and the operational accelerations are controlled via model predictive control with guaranteed stability. Simulation experiments are provided in order to test the feasibility and demonstrate the performance and robustness of the proposed strategy.Transport and Plannin
Pediatric robot-assisted extravesical ureteral reimplantation (revur) in simple and complex ureter anatomy: Report of a multicenter experience
No full textBackground: Robot-assisted extravesical ureteral reimplantation (REVUR) is a well established approach for surgical treatment of pediatric vesicoureteral reflux (VUR). However, further evidence is needed to confirm its efficacy even in case of complex anatomy. Objective: This study aimed to further confirm the evidence that REVUR is safe and effective in both simple and complex ureter anatomy. Study design: The charts of all patients with VUR, who received REVUR in 6 different institutions over a 5-year period, were retrospectively reviewed. Patients with both simple and complex ureter anatomy were included. Patient demographics, surgical variables, and post-operative results were assessed. VUR resolution was defined as either being resolved VUR on voiding cystourethrogram (VCUG) or clinically without symptoms during the follow-up. Results: Fifty-seven patients with median age of 6.9 years (range 4.5-12), receiving REVUR in the study period, were included. Eighteen (31.6%) patients had complex anatomy and included prior failed endoscopic injection (n = 13), complete ureteral duplication (n = 2), periureteral diverticulum (n = 2), ectopic megaureter requiring dismembering (n = 1). The median operative time was 155 min for unilateral and 211.5 min for bilateral repairs. The clinical + radiographic VUR resolution rate was 96.5%. Post-operative complications (Clavien 2) included urinary retention following bilateral repair (n = 5, 8.7%), febrile urinary tract infection (UTI) (n = 6, 10.5%) and gross hematuria (n = 3, 5.2%). Comparative analysis between simple and complex cases showed that REVUR was faster in simple cases in both unilateral [p = 0.002] and bilateral repair [p = 0.001] and post-operative urinary retention was more frequent in simple cases [p = 0.004] and in patients with pre-operative bowel and bladder dysfunction (BBD) [p = 0.001] (Table). Discussion: This series confirmed that the robot-assisted technique was feasible even in cases with complex anatomy using some technical refinements, that justified the longer operative times in both unilateral and bilateral cases. An interesting finding of this study was the correlation emerged between BBD and risk of post-operative urinary retention and VUR persistence. Our results also excluded any significant correlation between complex cases and risk of post-operative urinary retention. The main study limitations included the retrospective and nonrandomized design, the small number of cases and the arbitrary definition of complex anatomy. Conclusion: REVUR was safe and effective for management of VUR in both simple and complex ureter anatomy. Complex REVUR required slightly longer operative times, without significant differences in post-operative mordidity and success rates. Aside from complex anatomy, BBD emerged as the main risk factor associated with surgical failure and post-operative morbidity
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