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Book ; Online: Energy-saving sub-optimal sliding mode control with bounded actuation

Ruderman, Michael / Pisano, Alessandro / Usai, Elio

2023

Abstract: The second-order sub-optimal sliding mode control (SMC), known in the literature for the last two decades, is extended by a control-off mode which allows for saving energy during the finite time convergence. The systems with relative degree two between ... ...

Abstract	The second-order sub-optimal sliding mode control (SMC), known in the literature for the last two decades, is extended by a control-off mode which allows for saving energy during the finite time convergence. The systems with relative degree two between the sliding variable and switching control with bounded actuation are considered, while the matched upper-bounded perturbations are not necessarily continuous. Detailed analysis of the proposed energy-saving sub optimal SMC is performed with regard to the parametric conditions, reaching and convergence time, and residual steady oscillations if the parasitic actuator dynamics is added. Constraints for both switching threshold parameters are formulated with respect to the control authority and perturbations upper bound. Based on the estimated finite convergence time, the parameterization of the switching thresholds is solved as constrained minimization of the derived energy cost function. The total energy consuming control-on time is guaranteed to be lower than the upper-bounded convergence time of the conventional sub-optimal SMC. Numerical evaluations expose the properties of the proposed energy-saving sub-optimal SMC and compare it with conventional sub-optimal SMC in terms of the fuel consumption during the convergence. Comment: 10 pages, 11 figures, 2 tables
Keywords	Mathematics - Optimization and Control ; Electrical Engineering and Systems Science - Systems and Control
Subject code	510
Publishing date	2023-05-13
Publishing country	us
Document type	Book ; Online
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Article ; Online: Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter.

Asres, Mulugeta Weldezgina / Omlin, Christian Walter / Wang, Long / Yu, David / Parygin, Pavel / Dittmann, Jay / Karapostoli, Georgia / Seidel, Markus / Venditti, Rosamaria / Lambrecht, Luka / Usai, Emanuele / Ahmad, Muhammad / Menendez, Javier Fernandez / Maeshima, Kaori / The Cms-Hcal Collaboration

Sensors (Basel, Switzerland)

2023 Volume 23, Issue 24

Abstract: The Compact Muon Solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the Large Hadron Collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle data ... ...

Abstract	The Compact Muon Solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the Large Hadron Collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle data acquisition problems to avoid data quality loss. In this study, we present a semi-supervised spatio-temporal anomaly detection (AD) monitoring system for the physics particle reading channels of the Hadron Calorimeter (HCAL) of the CMS using three-dimensional digi-occupancy map data of the DQM. We propose the GraphSTAD system, which employs convolutional and graph neural networks to learn local spatial characteristics induced by particles traversing the detector and the global behavior owing to shared backend circuit connections and housing boxes of the channels, respectively. Recurrent neural networks capture the temporal evolution of the extracted spatial features. We validate the accuracy of the proposed AD system in capturing diverse channel fault types using the LHC collision data sets. The GraphSTAD system achieves production-level accuracy and is being integrated into the CMS core production system for real-time monitoring of the HCAL. We provide a quantitative performance comparison with alternative benchmark models to demonstrate the promising leverage of the presented system.
Language	English
Publishing date	2023-12-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23249679
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Article: Treatment results using a mixed fiber mesh in patients with grade IV cystocele.

Migliari, R / Usai, E

The Journal of urology

1999 Volume 161, Issue 4, Page(s) 1255–1258

Abstract: Purpose: We determined the efficacy of a modification of the 4-corner bladder and bladder neck suspension procedure using mixed fiber mesh to correct grade IV cystocele.: Materials and methods: We evaluated 15 women with a mean age of 67 years who ... ...

Abstract	Purpose: We determined the efficacy of a modification of the 4-corner bladder and bladder neck suspension procedure using mixed fiber mesh to correct grade IV cystocele. Materials and methods: We evaluated 15 women with a mean age of 67 years who had severe anterior vaginal wall prolapse, of whom 3 had concurrent enterorectocele. Previously 5 patients had undergone repair of anterior vaginal wall prolapse and 2 had undergone procedures for stress urinary incontinence. In 10 patients type II stress urinary incontinence was diagnosed with urethral hypermobility and abdominal leak point pressure greater than 90 cm. water. No patients with intrinsic sphincter deficiency were enrolled in the study. A mixed fiber mesh was positioned using a modification of the 4-corner bladder and bladder neck suspension technique. Patients with concurrent enterorectocele underwent simultaneous formal repair of the posterior descensus. Results: All patients were available for postoperative pelvic examination at 3-month intervals. Mean followup was 23.4 months (range 18 to 39). Of the 15 women 13 were continent (dry) at followup. No recurrent cystocele was evident, except in 1 patient who presented with segmental posterior bladder prolapse. In 2 patients new onset enterorectocele developed 6 months after mesh implantation. Conclusions: Our study confirms that the addition of mesh to the classic 4-corner bladder base and neck suspension procedure effectively treats incontinence and cystocele. We recommend this method for cases in which traditional techniques have previously failed and when the quality of suspending tissue is poor or defective, as in connective tissue disease. However, the risk of worsening enterorectocele or its new onset must be considered.
MeSH term(s)	Aged ; Female ; Follow-Up Studies ; Humans ; Middle Aged ; Surgical Mesh ; Suture Techniques ; Urinary Bladder Diseases/classification ; Urinary Bladder Diseases/surgery ; Urinary Incontinence/surgery ; Uterine Prolapse/surgery
Language	English
Publishing date	1999-04
Publishing country	United States
Document type	Clinical Trial ; Journal Article
ZDB-ID	3176-8
ISSN	1527-3792 ; 0022-5347
ISSN (online)	1527-3792
ISSN	0022-5347
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Ui VI Zs.91: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG)
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Book ; Online: Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter

2023

Abstract: The compact muon solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the large hadron collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle data ... ...

Abstract	The compact muon solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the large hadron collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle data acquisition problems to avoid data quality loss. In this study, we present semi-supervised spatio-temporal anomaly detection (AD) monitoring for the physics particle reading channels of the hadronic calorimeter (HCAL) of the CMS using three-dimensional digi-occupancy map data of the DQM. We propose the GraphSTAD system, which employs convolutional and graph neural networks to learn local spatial characteristics induced by particles traversing the detector, and global behavior owing to shared backend circuit connections and housing boxes of the channels, respectively. Recurrent neural networks capture the temporal evolution of the extracted spatial features. We have validated the accuracy of the proposed AD system in capturing diverse channel fault types using the LHC Run-2 collision data sets. The GraphSTAD system has achieved production-level accuracy and is being integrated into the CMS core production system--for real-time monitoring of the HCAL. We have also provided a quantitative performance comparison with alternative benchmark models to demonstrate the promising leverage of the presented system. Comment: 23 pages, 15 figures, 3 tables
Keywords	Computer Science - Machine Learning ; Computer Science - Artificial Intelligence
Subject code	006
Publishing date	2023-11-07
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: La nefrosclerosi maligna. Contributo clinico e morfologico.

Usai, E

Pathologica

1977 Volume 69, Issue 993-994, Page(s) 387–398

Title translation	Malignant nephrosclerosis. Clinical and morphological study.
MeSH term(s)	Female ; Humans ; Hypertension/complications ; Hypertension, Malignant/complications ; Kidney/pathology ; Middle Aged ; Nephrectomy ; Nephrosclerosis/etiology ; Nephrosclerosis/pathology ; Nephrosclerosis/surgery ; Postoperative Complications
Language	Italian
Publishing date	1977-07
Publishing country	Italy
Document type	English Abstract ; Journal Article
ZDB-ID	418229-7
ISSN	1591-951X ; 0031-2983
ISSN (online)	1591-951X
ISSN	0031-2983
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Article: Standard and extramural ambulatory urodynamic investigation for the diagnosis of detrusor instability-correlated incontinence and micturition disorders.

Porru, D / Usai, E

Neurourology and urodynamics

1994 Volume 13, Issue 3, Page(s) 237–242

Abstract: Forty-six patients were evaluated for complaints of urinary incontinence or voiding disorders. Diagnostic testing included a detailed history, physical examination, urine analysis, and urodynamic studies consisting of a conventional urodynamic test (S.I.) ...

Abstract	Forty-six patients were evaluated for complaints of urinary incontinence or voiding disorders. Diagnostic testing included a detailed history, physical examination, urine analysis, and urodynamic studies consisting of a conventional urodynamic test (S.I.) including provocative manoeuvres and extramural ambulatory urodynamic monitoring (e.a.m.). We compared the pre-classification diagnoses obtained from the medical history with both urodynamic tests. Conventional cystometry detected detrusor instability in 8 patients out of 16 with a history of urgency, while a normal detrusor behaviour was observed in the other 8. "Provocative" manoeuvres yielded an additional 13.3%. Extramural ambulatory monitoring confirmed the diagnosis in the 8 patients with hyperactivity and revealed detrusor instability in a further 7. E.a.m. proved adequate in 93.7% of patients with symptoms of detrusor instability. In the group of patients with urinary stress incontinence (USI) e.a.m. revealed detrusor instability in 18.7% of the patients, but did not significantly improved the diagnostic results obtained by S.I. Coughing was the most effective stimulus to objectify stress incontinence. The comparison of the results obtained with S.I. and those obtained with home e.a.m. will probably lead to a more rational use of both methods. Our data confirm the promising impact of ambulatory urodynamic investigation.
MeSH term(s)	Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Middle Aged ; Monitoring, Ambulatory ; Muscle, Smooth/physiopathology ; Urinary Bladder/physiopathology ; Urinary Catheterization ; Urinary Incontinence/diagnosis ; Urinary Incontinence/physiopathology ; Urination Disorders/diagnosis ; Urination Disorders/physiopathology ; Urodynamics/physiology
Language	English
Publishing date	1994
Publishing country	United States
Document type	Comparative Study ; Journal Article
ZDB-ID	604904-7
ISSN	1520-6777 ; 0733-2467
ISSN (online)	1520-6777
ISSN	0733-2467
DOI	10.1002/1520-6777(1994)13:3<237::aid-nau1930130305>3.0.co;2-4
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Zs.A 1828: Show issues

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Article: Orthotopic ileal bladder substitute after radical cystectomy: urodynamic features.

Porru, D / Usai, E

Neurourology and urodynamics

1994 Volume 13, Issue 3, Page(s) 255–260

Abstract: Urodynamic investigation was performed in 12 men, 3 to 8 months after cystoprostatectomy for bladder cancer and bladder substitution, using a detubularized ileal segment as described by Studer-Zingg. All patients underwent a standard urodynamic ... ...

Abstract	Urodynamic investigation was performed in 12 men, 3 to 8 months after cystoprostatectomy for bladder cancer and bladder substitution, using a detubularized ileal segment as described by Studer-Zingg. All patients underwent a standard urodynamic evaluation and extramural ambulatory urodynamic monitoring (e.a.m.). Ten patients were continent by day and 3 were incontinent during the night to a degree that necessitated use of a condom catheter. Three patients awakened every 3 hours to void and 6 had to void 1-2 times nightly. The residual urine was over 100 ml in 3 patients; it was low or absent in the remainder. Micturition was achieved by straining, with a maximum flow rate of 13 ml per second or greater, except in 2 patients. In 2 patients a urethral narrowing was found at the urethro-ileal anastomosis, and in 1 of them an incoordination between the neobladder and the pelvic floor required the use of a urethral catheter and a subsequent protocol of pelvic floor rehabilitation. The incidence of nocturnal incontinence was 56.6%. In 2 patients urethral pressure profile revealed hypotonia, with a maximum urethral closure pressure (MUCP) < 45 cm H2O. During e.a.m. study pressure values in the neobladder usually ranged below 15 cm H2O and exceeded 35 cm H2O in only 1 patient who complained of daytime and nocturnal incontinence. Neobladder compliance was normal in all cases. In order to achieve a complete rehabilitation after operation, the patient should be instructed to follow a careful training in order to prevent overdistention of the neobladder by voiding at regular intervals and to obtain continence.
MeSH term(s)	Aged ; Cystectomy ; Humans ; Ileum ; Male ; Middle Aged ; Monitoring, Ambulatory ; Prostatectomy ; Urinary Bladder Neoplasms/surgery ; Urinary Catheterization ; Urinary Incontinence/etiology ; Urinary Reservoirs, Continent ; Urination ; Urodynamics
Language	English
Publishing date	1994
Publishing country	United States
Document type	Journal Article
ZDB-ID	604904-7
ISSN	1520-6777 ; 0733-2467
ISSN (online)	1520-6777
ISSN	0733-2467
DOI	10.1002/1520-6777(1994)13:3<255::aid-nau1930130307>3.0.co;2-v
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Book ; Online: End-to-End Jet Classification of Quarks and Gluons with the CMS Open Data

Andrews, Michael / Alison, John / An, Sitong / Bryant, Patrick / Burkle, Bjorn / Gleyzer, Sergei / Narain, Meenakshi / Paulini, Manfred / Poczos, Barnabas / Usai, Emanuele

2019

Abstract: We describe the construction of end-to-end jet image classifiers based on simulated low-level detector data to discriminate quark- vs. gluon-initiated jets with high-fidelity simulated CMS Open Data. We highlight the importance of precise spatial ... ...

Abstract	We describe the construction of end-to-end jet image classifiers based on simulated low-level detector data to discriminate quark- vs. gluon-initiated jets with high-fidelity simulated CMS Open Data. We highlight the importance of precise spatial information and demonstrate competitive performance to existing state-of-the-art jet classifiers. We further generalize the end-to-end approach to event-level classification of quark vs. gluon di-jet QCD events. We compare the fully end-to-end approach to using hand-engineered features and demonstrate that the end-to-end algorithm is robust against the effects of underlying event and pile-up. Comment: 10 pages, 5 figures, 7 tables; v2: published version
Keywords	High Energy Physics - Experiment ; Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Machine Learning ; Physics - Data Analysis ; Statistics and Probability
Publishing date	2019-02-21
Publishing country	us
Document type	Book ; Online
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Book ; Online: End-to-End Jet Classification of Boosted Top Quarks with the CMS Open Data

Andrews, Michael / Burkle, Bjorn / Chen, Yi-fan / DiCroce, Davide / Gleyzer, Sergei / Heintz, Ulrich / Narain, Meenakshi / Paulini, Manfred / Pervan, Nikolas / Shafi, Yusef / Sun, Wei / Usai, Emanuele / Yang, Kun

2021

Abstract: We describe a novel application of the end-to-end deep learning technique to the task of discriminating top quark-initiated jets from those originating from the hadronization of a light quark or a gluon. The end-to-end deep learning technique combines ... ...

Abstract	We describe a novel application of the end-to-end deep learning technique to the task of discriminating top quark-initiated jets from those originating from the hadronization of a light quark or a gluon. The end-to-end deep learning technique combines deep learning algorithms and low-level detector representation of the high-energy collision event. In this study, we use low-level detector information from the simulated CMS Open Data samples to construct the top jet classifiers. To optimize classifier performance we progressively add low-level information from the CMS tracking detector, including pixel detector reconstructed hits and impact parameters, and demonstrate the value of additional tracking information even when no new spatial structures are added. Relying only on calorimeter energy deposits and reconstructed pixel detector hits, the end-to-end classifier achieves an AUC score of 0.975$\pm$0.002 for the task of classifying boosted top quark jets. After adding derived track quantities, the classifier AUC score increases to 0.9824$\pm$0.0013, serving as the first performance benchmark for these CMS Open Data samples. We additionally provide a timing performance comparison of different processor unit architectures for training the network. Comment: 9 pages, 3 figures, 4 tables; v3: unpublished
Keywords	Physics - Data Analysis ; Statistics and Probability ; Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Machine Learning ; High Energy Physics - Experiment
Subject code	006
Publishing date	2021-04-19
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Ureteroscopic removal of ureteral calculi in bilateral ureteral duplications.

Migliari, R / Usai, E

Urologia internationalis

1991 Volume 46, Issue 1, Page(s) 79–81

Abstract: Two rare cases of ureteroscopic removal of impacted ureteral calculi in patients with partial and complete ureteral duplication are described. The procedural steps and problems encountered are discussed. Successful ureteroscopic stone extraction was ... ...

Abstract	Two rare cases of ureteroscopic removal of impacted ureteral calculi in patients with partial and complete ureteral duplication are described. The procedural steps and problems encountered are discussed. Successful ureteroscopic stone extraction was obtained in the 2 patients.
MeSH term(s)	Adult ; Endoscopy/methods ; Female ; Humans ; Middle Aged ; Ureter/abnormalities ; Ureteral Calculi/therapy
Language	English
Publishing date	1991
Publishing country	Switzerland
Document type	Case Reports ; Journal Article
ZDB-ID	204045-1
ISSN	1423-0399 ; 0042-1138
ISSN (online)	1423-0399
ISSN	0042-1138
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