11 results on '"Paviglianiti G"'
Search Results
2. Observer-based sensor fault detection and isolation for chemical batch reactors
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Gaetano Paviglianiti, Fabrizio Caccavale, Massimiliano Mattei, Francesco Pierri, Pierri, F., Paviglianiti, G., Caccavale, F., and Mattei, M.
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Computer science ,Real-time computing ,RBF ,Fault (power engineering) ,Robust observers ,Measure (mathematics) ,Fault detection and isolation ,Set (abstract data type) ,Artificial Intelligence ,Control and Systems Engineering ,Control theory ,Radial basis function ,Isolation (database systems) ,Electrical and Electronic Engineering ,Observer based ,Fault detection - Abstract
In this paper a scheme for sensor fault diagnosis in chemical batch reactors is proposed. The scheme is based on a bank of two observers aimed at generating a set of residuals sensitive to faults occurrence. The observers are designed via a H∞ approach, so as to guarantee faults detection and isolation even in the presence of external disturbances and modeling errors. The heat released by the reaction is estimated via an universal approximator, based on radial basis functions, whose weights are adjusted on-line. Finally, the estimates provided by the observers and the sensor measures are processed to provide information about the faulty sensor as well as an healthy measure. In order to test the effectiveness of the proposed approach, a simulation case study is developed. © 2008 Elsevier Ltd. All rights reserved.
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- 2008
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3. ONLINE APPROXIMATORS FOR THE ACTUATORS FDI OF A SMALL COMMERCIAL AIRCRAFT
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Gaetano Paviglianiti, Massimiliano Mattei, Mattei, M., and Paviglianiti, G.
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Engineering ,Artificial neural network ,Elevator ,Basis (linear algebra) ,business.industry ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Control engineering ,General Medicine ,Fault (power engineering) ,Fault detection and isolation ,Aircraft control ,Nonlinear system ,Radial base function networks ,Fault approximation ,Control theory ,Nonlinear adaptive estimator ,business ,Actuator - Abstract
in this paper the problem of detecting and isolating faults on the actuators of a small commercial aircraft using online approximators is dealt with. in particular the capabilities of radial basis neural networks to approximate faults on the engines and elevators of an AP-68 Vulcanair commercial aircraft are investigated also in the presence of model uncertainties and external disturbances. The structure of the aircraft and of the fault models appears to be well suited for this kind of application. Although some effort has to be spent in tuning a certain number of parameters, the numerical results obtained on a full nonlinear Matlab-Simulink simulator of the aircraft seem to be encouraging. Copyright © 2005 IFAC.
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- 2005
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4. A mixed direct/functional redundancy scheme for the FDI on a small commercial aircraft
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Carlo Cosentino, Francesco Amato, Gaetano Paviglianiti, Massimiliano Mattei, Amato, F., Cosentino, C., Mattei, M., and Paviglianiti, G.
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Scheme (programming language) ,Engineering ,Observer (quantum physics) ,Exploit ,business.industry ,FDI ,Control engineering ,Decoupling (cosmology) ,Replication (computing) ,Nonlinear system ,Nonlinear observer ,Software ,Control theory ,Control system ,Control ,Nonlinear systems ,∞ ,LMI ,business ,computer ,computer.programming_language - Abstract
In this paper we consider the problem of detecting and isolating sensor faults on an aircraft in the presence of external disturbances. A nonlinear observer based approach is proposed which makes use of the complete nonlinear model of the aircraft. This approach exploits the so-called Unknown Input Observer (UIO) theory and guarantees disturbance decoupling with an H∞ performance. A comparison between the application of the classical UIO based FDI scheme and the proposed nonlinear scheme shows the benefits of the approach provided in this paper. Finally we exploit the nonlinear UIO technique to design a mixed hardware/software FDI system to improve the performance of the classical hardware system without the replication of expensive sensors. Some numerical simulations are carried out on the model of the small commercial aircraft under consideration in the project Affordable Digital Fly-By-Wire Flight Control System (ADFCS-II) funded by the European Community.
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- 2003
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5. Leiomyosarcoma of the inferior vena cava.
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Di Pilla MA, Capuano MA, Rossi M, Di Pilla G, Minelli R, Pizzicato P, Rossi A, Paviglianiti G, Irace D, Vallone G, Salvia AAH, Smaldone MC, Cariello V, Zeccolini R, and Rossi E
- Abstract
Inferior vena cava leiomyosarcoma is a rare malignant mesenchymal tumor that originates from the smooth muscle cells of the venous media and is more frequent in females in the V-VI decade of life. Due to scarce and specific symptoms, diagnosis is not simple, and often metastases to the liver, lungs, and/or lymph nodes are already present. A 44-year-old male patient arrives at our institution presenting diffuse abdominal pain and a sense of weight associated with lumbar pain. He showed nothing relevant except for a moderate consumption of alcohol. Ultrasound examination of the abdomen revealed liver enlargement with hyperechoic nodularity and clear margins. Furthermore, the presence of a voluminous solid nodular formation was found, with an inhomogeneous echostructure and moderate vascularization on Doppler. Inferior vena cava leiomyosarcoma is a rare malignancy. The diagnosis is usually established after surgery, however, recurrences are common and the role of chemoradiation therapy remains to be defined. The only potential treatment is surgical resection with possible vessel reconstruction and en bloc removal of adjacent structures with 5 and 10-year survival rates of 49% and 29%, respectively., (© 2023 The Authors. Published by Elsevier Inc. on behalf of University of Washington.)
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- 2023
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6. Liposarcoma of the spermatic cord: The state of art and our experience.
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Di Pilla MA, Capuano MA, Rossi M, Di Pilla G, Minelli R, Pizzicato P, Rossi A, Paviglianiti G, Irace D, Vallone G, Salvia AAH, Smaldone MC, Cariello V, Zeccolini R, and Rossi E
- Abstract
Liposarcoma of the spermatic cord is a malignant neoformation so rare that less than 200 cases are reported in the world. It is a tumor that originates from adipose tissue and when it is found in the spermatic cord it can deceptively simulate an inguinal hernia and not be easily identified. The present work describes the case of a 37-year-old man with liposarcoma of the spermatic cord who arrives at our institution with painless swelling of the left testicle. Physical examination revealed a painless swelling in the scrotal sac. The scrotal ultrasound examination revealed a mass, measuring 8 cm (cranio-caudal) × 5.4 cm (latero-lateral) × 8 cm (antero-posterior) and characterized later with a basal CT examination of the abdomen. The patient was subsequently surgically treated with excision of the tumor, plus hernial plastic with plug and mesh. Histological examination revealed a mature adipocyte neoplasm whose morphological and molecular characteristics (amplification of the MDM2 gene) are consistent with the diagnosis of dediferrentiated liposarcoma variety CO-MINGLED, G2 (sec. FNCLCC) . The patient is currently under cancer surveillance with no signs of loco-regional recurrence. Spermatic cord liposarcoma is an extremely rare malignancy. It's not easy to identify as it can simulate an inguinal hernia, hydrocele, lipoma, funicular cyst, or testicular tumor. Diagnosis is usually established postsurgery, however, relapses are common and the role of chemo-radiotherapy remains to be defined., (© 2023 The Authors.)
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- 2023
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7. A pediatric case of Chlamydia psittaci caused severe Acute Respiratory Distress Syndrome (ARDS) in Italy.
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Marchese S, Marchese G, Paviglianiti G, Lapi M, Ottoveggio G, Pipitone G, and Corsello G
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- Animals, Male, Humans, Child, Child, Preschool, RNA, Viral, SARS-CoV-2, Italy, Anti-Bacterial Agents therapeutic use, Psittacosis diagnosis, Psittacosis drug therapy, Chlamydophila psittaci, COVID-19, Respiratory Distress Syndrome, Pneumonia, Mycoplasma, Chlamydia
- Abstract
Background: This case of psittacosis in children, is the first described in literature, in Italy. This respiratory infection can be transmitted to humans from the inhalation of respiratory secretions, feces and plumage aerosol of infected birds (and other animals). Usually it can have an asymptomatic or paucisymptomatic course, and the onset is often flu-like, but in this case the child risked his life for a severe respiratory failure. This report is unique because in children psittacosis is rare, and always misdiagnosed, or could cause a delayed diagnosis because of lack of awareness among the paediatricians and physicians. Furthermore, psittacosis enters a differential diagnosis with SARS-COV2 infection because both diseases may determine dyspnea and atypical pneumonia, up to acute respiratory failure., Case Presentation: This clinical case talks about a three-and-a-half-year-old male child affected by psittacosis (or ornithosis), with severe dyspnea and systemic symptoms who required oro-tracheal intubation for acute respiratory failure. The child had slept in a room at home, with some recently bought parrots affected by psittacosis. Initially the child was treated with empiric antibiotic therapy (i.v.ceftriaxone and teicoplanin), but after having isolated the DNA of the germ "Chlamydia psittaci" in both serological and through bronchoalveolar lavage (BAL), he was treated with targeted antibiotic therapy: tetracyclines (doxicillin)., Conclusions: Psittacosis is an extremely contagious disease, caused by an intracellular germ, called "Chlamydia psittaci", a Gram-negative bacterium, transmitted to humans in particular by infected birds, responsible for atypical pneumonia, with acute and chronic respiratory symptoms, sometimes with multi-organ failure and disseminated intravascular coagulation. Even if it is a rare respiratory disease among children, a good doctor must think about psittacosis as cause of respiratory symptoms (and not only flu or SARS-COV2), above all through a correct medical history, in order to provide a targeted antibiotic therapy. An interesting case of psittacosis in a child is being reported here, which has been treated successfully with doxycillin., (© 2023. Società Italiana di Pediatria.)
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- 2023
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8. Integrated imaging of systemic Langerhans cell histiocytosis in an infant.
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Cariello V, Lombardo P, Castelli L, Brillantino C, De Fusco C, Rossi A, Minelli R, Paviglianiti G, Grassi R, and Rossi E
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Langerhans cell histiocytosis (LCH) is a myeloid neoplasm characterized by a clonal proliferation of CD1a+/CD207+ dendritic cells. Although individuals of any age can be affected, the disease is most common in infants younger than 5 years of age, especially males. A wide range of manifestations, from asymptomatic to aggressive, have been described, along with multiorgan involvement. Even though the majority of bone lesions are observed, skin, lymph nodes, brain and lungs can also be involved. The involvement of hematopoietic system, including bone marrow, liver and spleen, is less frequent yet associated with worse prognosis, due to a worse treatment response. Diagnosis of LCH is based on the integration of clinical, laboratory, and radiological data; however, only histopathological examination might confirm it. As far as the spleen involvement is concerned, according to literature, it has been reported in about 15% patients with multisystem involvement, nonetheless only a few cases show parenchymal lesions. The present study reports the case of an infant with LCH with multisystem involvement, including bone, skin, liver, and spleen, with evidence of parenchymal lesions., (© 2022 The Authors. Published by Elsevier Inc. on behalf of University of Washington.)
- Published
- 2022
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9. Duodenal hematoma in pediatric age: a rare case report.
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Brillantino C, Rossi E, Baldari D, Minelli R, Bignardi E, Paviglianiti G, Restivo G, Cangemi MA, Zeccolini R, and Zeccolini M
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- Acute Disease, Child, Gastrointestinal Hemorrhage complications, Hematoma diagnostic imaging, Hematoma etiology, Hematoma therapy, Humans, Male, Duodenal Diseases complications, Duodenal Diseases diagnostic imaging, Pancreatitis complications
- Abstract
In pediatric age, duodenal hematoma is rare and generally occurs following a closed abdominal trauma due to the crushing of the duodenum against the rigid plane of the spine; it rarely follows anticoagulant therapy, pancreatitis, bleeding disorders, vasculitis, tumors or upper digestive endoscopy. Duodenal hematoma is a rare cause of obstruction of the upper gastrointestinal tract and acute pancreatitis, and the diagnosis is sometimes difficult and late. On the other hand, the identification of the pathology in its initial stages allows the young patients to be subjected to a conservative treatment that resolves the issue most of the time, thus avoiding surgery. In this article we describe an unusual case of duodenal hematoma, following esophagus-gastro-duodenoscopy, in a 12-year-old boy with Di George syndrome., (© 2020. Società Italiana di Ultrasonologia in Medicina e Biologia (SIUMB).)
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- 2022
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10. Vaccine-Induced Subacute Thyroiditis (De Quervain's) after mRNA Vaccine against SARS-CoV-2: A Case Report and Systematic Review.
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Pipitone G, Rindi LV, Petrosillo N, Foti NAM, Caci G, Iaria C, Donno DR, Boumis E, Paviglianiti G, and Taglietti F
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De Quervain's thyroiditis, sometimes referred to as subacute thyroiditis (SAT), is the most common granulomatous disease of the thyroid, typically found after a viral infection in middle-aged women. The mRNA encoding for the angiotensin-converting enzyme-2 (ACE-2) receptor is expressed in follicular thyroid cells, making them a potential target for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Besides infection, SARS-CoV-2 vaccines have also been implicated in SAT pathogenesis. We present a case of a woman developing SAT following vaccination with Comirnaty by Pfizer Inc. (New-York, USA). We performed a systematic review of similar cases available in the literature to provide a better understanding of the topic. We searched the databases PubMed and Embase and followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Patient records were then sorted according to the type of administered vaccine and a statistical analysis of the extracted data was performed. No statistically significant difference between mRNA vaccines and other vaccines in inducing SAT was found, nor was any found in terms of patient demographics, symptoms at presentation, initial, or follow-up blood tests. In our case report, we described the possible association between SARS-CoV-2 mRNA-based vaccine Comirnaty and SAT.
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- 2022
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11. Advanced Management Protocol of Transanal Irrigation in Order to Improve the Outcome of Pediatric Patients with Fecal Incontinence.
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Caruso AM, Milazzo MPM, Bommarito D, Girgenti V, Amato G, Paviglianiti G, Casuccio A, Catalano P, Cimador M, and Di Pace MR
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Background: Transanal irrigation (TAI) is employed for children with fecal incontinence, but it can present several problems which require a study of their outcomes among different pathologies and without a tailored work up. The aim of our study was to evaluate the effectiveness of an advanced protocol in order to tailor TAI, prevent complications, and evaluate outcomes., Methods: We included 70 patients (14 anorectal malformation, 12 Hirschsprung's disease, 24 neurological impairment, 20 functional incontinence) submitted to a comprehensive protocol with Peristeen
® : fecal score, volumetric enema, rectal ultrasound, anorectal 3D manometry, and diary for testing and parameter adjustment., Results: Among the patients, 62.9% needed adaptations to the parameters, mainly volume of irrigated water and number of puffs of balloon. These adaptations were positively correlated with pre-treatment manometric and enema data. In each group, the improvement of score was statistically significant in all cases ( p 0.000); the main factor influencing the efficacy was the rate of sphincter anomalies. The ARM group had slower improvement than other groups, whereas functional patients had the best response., Conclusions: Our results showed that TAI should not be standardized for all patients, because each one has different peculiarities; evaluation of patients before TAI with rectal ultrasound, enema, and manometry allowed us to tailor the treatment, highlighting different outcomes among various pathologies, thus improving the efficacy.- Published
- 2021
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