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11篇 您的检索式:作者名="Stefano Piazza"
    题名 作者 年代 出处 被引量
1Unsupervised Electric Motor Fault Detection by Using Deep Autoencoders显示文摘Fault diagnosis of electric motors is a fundamental task for production line testing, and it is usually performed by experienced human operators. In the recent years, several methods have been proposed in the literature for detecting faults automatically. Deep neural networks have been successfully employed for this task, but, up to the authors' knowledge, they have never been used in an unsupervised scenario. This paper proposes an unsupervised method for diagnosing faults of electric motors by using a novelty detection approach based on deep autoencoders. In the proposed method, vibration signals are acquired by using accelerometers and processed to extract LogMel coefficients as features. Autoencoders are trained by using normal data only, i.e., data that do not contain faults. Three different autoencoders architectures have been evaluated: the multilayer perceptron(MLP) autoencoder, the convolutional neural network autoencoder, and the recurrent autoencoder composed of long short-term memory(LSTM) units. The experiments have been conducted by using a dataset created by the authors, and the proposed approaches have been compared to the one-class support vector machine(OC-SVM) algorithm. The performance has been evaluated in terms area under curve(AUC) of the receiver operating characteristic curve, and the results showed that all the autoencoder-based approaches outperform the OCSVM algorithm. Moreover, the MLP autoencoder is the most performing architecture, achieving an AUC equal to 99.11 %.Emanuele Principi Damiano Rossetti Stefano Squartini Francesco Piazza 2019IEEE/CAA Journal of Automatica Sinica2019,6,2:10
2Helicobacter pylori eradication: Sequential therapy and Lactobacillus reuteri supplementation显示文摘AIM:To evaluate the role of sequential therapy and Lactobacillus reuteri (L. reuteri ) supplementation, in the eradication treatment of Helicobacter pylori (H. pylori ). METHODS:H. pylori infection was diagnosed in 90 adult dyspeptic patients. Patients were excluded if previously treated for H. pylori infection or if they were taking a proton pump inhibitor (PPI), H2-receptor antagonist or antibiotics. Patients were assigned to receive one of the following therapies:(1) 7-d triple therapy (PPI plus clarithromycin and amoxicillin or metronidazole) plus L. reuteri supplementation dur- ing antibiotic treatment; (2) 7-d triple therapy plus L. reuteri supplementation after antibiotic treatment; (3) sequential regimen (5-d PPI plus amoxicillin therapy followed by a 5-d PPI, clarithromycin and tinidazole) plus L. reuteri supplementation during antibiotic treatment; and (4) sequential regimen plus L. reuteri supplementation after antibiotic treatment. Successful eradication therapy was defined as a negative urea breath test at least 4 wk following treatment. RESULTS:Ninety adult dyspeptic patients were en- rolled, and 83 (30 male, 53 female; mean age 57 ± 13 years) completed the study. Nineteen patients were administered a 7-d triple treatment:11 with L. reuteri supplementation during and 8 after therapy. Sixty-four patients were administered a sequential regimen:32 with L. reuteri supplementation during and 32 after therapy. The eradication rate was significantly higher in the sequential group compared with the 7-d triple regimen (88% vs 63%, P = 0.01). No difference was found between two types of PPI. No difference in erad- ication rates was observed between patients submitted to L. reuteri supplementation during or after antibiotic treatment. Compliance with therapy was excellent in all patients. No difference in adverse effects was observed between the different antibiotic treatments and between patients submitted to L. reuteri supplementation during and after antibiotic treatment. There was a low incidence of adverse effects in all groups of patients with sequential therapy, probably due to the presence of the L. reuteri supplementation. CONCLUSION:The sequential treatment regimen achieved a significantly higher eradication rate of H. pylori compared with standard 7-d regimen. L. reuteri supplementation could reduce the frequency and the intensity of antibiotic-associated side-effects.Cesare Efrati Giorgia Nicolini Claudio Cannaviello Nicole Piazza O'Sed Stefano Valabrega 2012World Journal of Gastroenterology2012,18,43:4
3The Arabidopsis pattern recognition receptor EFR enhances fire blight resistance in apple显示文摘Fire blight disease,caused by the bacterium Erwinia amylovora(E.amylovora),is responsible for substantial losses in cultivated apples worldwide.An important mechanism of plant immunity is based on the recognition of conserved microbial molecules,named pathogen-associated or microbe-associated molecular patterns(PAMPs or MAMPs),through pattern recognition receptors(PRRs),leading to pattern-triggered immunity(PTI).The interspecies transfer of PRRs represents a promising strategy to engineer broad-spectrum and durable disease resistance in crops.EFR,the Arabidopsis thaliana PRR for the PAMP elf18 derived from the elongation factor thermal unstable(EF-Tu)proved to be effective in improving bacterial resistance when expressed into Solanaceae and other plant species.In this study,we tested whether EFR can affect the interaction of apple with E.amylovora by its ectopic expression in the susceptible apple rootstock M.26.Stable EFR expression led to the activation of PAMP-triggered immune response in apple leaves upon treatment with supernatant of E.amylovora,as measured by the production of reactive oxygen species and the induction of known defense genes.The amount of tissue necrosis associated with E.amylovora infection was significantly reduced in the EFR transgenic rootstock compared to the wild-type.Our results show that the expression of EFR in apple rootstock may be a valuable biotechnology strategy to improve the resistance of apple to fire blight.Stefano Piazza Manuela Campa Valerio Pompili Lorenza Dalla Costa Umberto Salvagnin Vladimir Nekrasov Cyril Zipfel Mickael Malnoy 2021Horticulture Research2021,8,1:1
4Field testing of a simple flume(SMBF) for flow t in open channels显示文摘Stefano C D Piazza G V D Ferro V 2008Journal of Irrigation and Drainage Engineering2008,134,2:1
5The laparoscopic mini-gastric bypass: the Italian experience: outcomes from 974 consecutive cases in a multicenter review显示文摘M. Musella A. Susa F. Greco M. Luca E. Manno C. Stefano M. Milone R. Bonfanti G. Segato A. Antonino L. Piazza 2014Surgical Endoscopy2014,,:1
6Field testing of a simple flume (SMBF) for flow measurement in open channels显示文摘Stefano C D Piazza G V D Ferro V 2008Journal of Irrigation and Drainage Engineering2008,134,2:1
7Large thermal biasing of individual gated nanostructures显示文摘Stefano Roddaro Daniele Ercolani Mian Akif Safeen Francesco Rossella Vincenzo Piazza Francesco Giazotto Lucia Sorba Fabio Beltram 2014Nano Research2014,7,4:1
8Field testing of a simple flume(SMBF) for flow measurement in open channels显示文摘Stefano C D Piazza G V D Ferro V 2008Journal of Irrigation and Drainage Engineering ASCE2008,134,2:1
9New imaging technologies for robotic kidney cancer surgery显示文摘Objective:Kidney cancers account for approximately 2%of all newly diagnosed cancer in 2020.Among the primary treatment options for kidney cancer,urologist may choose between radical or partial nephrectomy,or ablative therapies.Nowadays,robotic-assisted partial nephrectomy(RAPN)for the management of renal cancers has gained popularity,up to being considered the gold standard.However,RAPN is a challenging procedure with a steep learning curve.Methods:In this narrative review,different imaging technologies used to guide and aid RAPN are discussed.Results:Three-dimensional visualization technology has been extensively discussed in RAPN,showing its value in enhancing robotic-surgery training,patient counseling,surgical planning,and intraoperative guidance.Intraoperative imaging technologies such as intracorporeal ultrasound,near-infrared fluorescent imaging,and intraoperative pathological examination can also be used to improve the outcomes following RAPN.Finally,artificial intelligence may play a role in the field of RAPN soon.Conclusion:RAPN is a complex surgery;however,many imaging technologies may play an important role in facilitating it.Stefano Puliatti Ahmed Eissa Enrico Checcucci Pietro Piazza Marco Amato Stefania Ferretti Simone Scarcella Juan Gomez Rivas Mark Taratkin Jose Marenco Ines Belenchon Rivero Karl-Friedrich Kowalewski Giovanni Cacciamani Ahmed El-Sherbiny Ahmed Zoeir Abdelhamid MEl-Bahnasy Ruben De Groote Alexandre Mottrie Salvatore Micali 2022Asian Journal of Urology2022,9,3:0
10Neuroscientific Evidence in the Strategic Exploit of the Disabled as a Fighter in the Islamic State显示文摘In this paper we aim to address,through an innovative neuroscientific view,a significant recruitment strategy implemented by ISIS targeting individuals with disabilities.The use of strategies that reinforce empathy and the encouragement of the belief that one is capable of achieving a given goal,are strategically effective messages in terms of recruitment.Self-efficacy,which is the set of beliefs the individual holds about his or her own abilities,is another tool used to effectively recruit someone with a disability.The use of media messages also reinforces the“know how”and the feeling of“being”,that is,recognizing oneself in rewarding values.In analyzing the Entertainment-Education method,we identified some elements of persuasive storytelling that even in people with disabilities has led to success in terms of recruitment.An innovative multidisciplinary contrast activity with the contribution of neuroscience may therefore be effective in identifying behaviors and recruitment strategies that are effective with people with disabilities.Franco Posa Jessica Leone Valeria Rondinelli Francesco Sclavi Stefano Piazza Franco Iacch 2022Journal of Sociology Study2022,12,1:0
11Transcriptional regulation of MdmiR285N microRNA in apple(Malus x domestica)and the heterologous plant system Arabidopsis thaliana显示文摘Malus x domestica microRNA MdmiR285N is a potential key regulator of plant immunity,as it has been predicted to target 35 RNA transcripts coding for different disease resistance proteins involved in plant defense to pathogens.In this study,the promoter region of MdmiR285N was isolated from the apple genome and analyzed in silico to detect potential regulatory regions controlling its transcription.A complex network of putative regulatory elements involved in plant growth and development,and in response to different hormones and stress conditions,was identified.Activity of theβ-Glucoronidase(GUS)reporter gene driven by the promoter of MdmiR285N was examined in transgenic apple,demonstrating that MdmiR285N was expressed during the vegetative growth phase.Similarly,in transgenic Arabidopsis thaliana,spatial and temporal patterns of GUS expression revealed that MdmiR285N was differentially regulated during seed germination,vegetative phase change,and reproductive development.To elucidate the role of MdmiR285N in plant immunity,MdmiR285N expression in wild-type apple plants and GUS activity in transgenic apple and Arabidopsis thaliana plants were monitored in response to Erwinia amylovora and Pseudomonas syringae pv.Tomato DC3000.A significant decrease of MdmiR285N levels and GUS expression was observed during host-pathogen infections.Overall,these data suggest that MdmiR285N is involved in the biotic stress response,plant growth,and reproductive development.Valerio Pompili Stefano Piazza Mingai Li Claudio Varotto Mickael Malnoy 2020Horticulture Research2020,7,1:0
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