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Book ; Online: M\'{e}todos para la Selecci\'{o}n y el Ajuste de Caracter\'{i}sticas en el Problema de la Detecci\'{o}n de Spam

Lorenzetti, Carlos M. / Cecchini, Rocío L. / Maguitman, Ana G. / Benczúr, András A.

2010

Abstract: The email is used daily by millions of people to communicate around the globe and it is a mission-critical application for many businesses. Over the last decade, unsolicited bulk email has become a major problem for email users. An overwhelming amount of ...

Abstract	The email is used daily by millions of people to communicate around the globe and it is a mission-critical application for many businesses. Over the last decade, unsolicited bulk email has become a major problem for email users. An overwhelming amount of spam is flowing into users' mailboxes daily. In 2004, an estimated 62% of all email was attributed to spam. Spam is not only frustrating for most email users, it strains the IT infrastructure of organizations and costs businesses billions of dollars in lost productivity. In recent years, spam has evolved from an annoyance into a serious security threat, and is now a prime medium for phishing of sensitive information, as well the spread of malicious software. This work presents a first approach to attack the spam problem. We propose an algorithm that will improve a classifier's results by adjusting its training set data. It improves the document's vocabulary representation by detecting good topic descriptors and discriminators. Comment: 5 pages, 1 figure, Workshop de Investigadores en Ciencias de la Computaci\'{o}n, WICC 2010, pp 48-52
Keywords	Computer Science - Information Retrieval ; Computer Science - Artificial Intelligence ; 68P20 ; H.3.3
Subject code	303
Publishing date	2010-06-01
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Cu-based thin rolled foils: relationship among alloy composition, micromechanical and antiviral properties against SARS-CoV-2.

Lorenzetti, L / Brandolini, M / Gatti, G / Bernardi, E / Chiavari, C / Gualandi, P / Galliani, G / Sambri, V / Martini, C

Heliyon

2024 Volume 10, Issue 6, Page(s) e28238

Abstract: The healthcare-associated infections (HAIs) and pandemics caused by multidrug-resistant (MDR) and new-generation pathogens threaten the whole world community. Cu and its alloys have been attracting widespread interest as anti-contamination materials due ... ...

Abstract	The healthcare-associated infections (HAIs) and pandemics caused by multidrug-resistant (MDR) and new-generation pathogens threaten the whole world community. Cu and its alloys have been attracting widespread interest as anti-contamination materials due to the rapid inactivation of MDR-superbugs and viruses. Applying thin Cu-based foils on pre-existing surfaces in hygiene-sensitive areas represents a quick, simple, cost-effective self-sanitising practice. However, the influence of chemical composition and microstructure should be deeply investigated when evaluating the antimicrobial capability and durability of Cu-based materials. The effect of composition on micromechanical and antiviral properties was investigated by comparing Cu15Zn and Cu18Ni20Zn (foil thickness from 13 to 27 μm) with Phosphorous High-Conductivity (PHC) Cu. The influence of recrystallisation annealing of PHC Cu was also investigated. Microstructural characterisation was carried out by optical (OM) and scanning electron (FEG-SEM) microscopy, Energy-dispersive Spectroscopy (EDS) and Electron-Backscattered Diffraction (EBSD). The micromechanical behaviour was assessed by microhardness, microscale abrasion and scratch tests. Cu-based foils were exposed to SARS-CoV-2 for different time points in
Language	English
Publishing date	2024-03-15
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e28238
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Linear Scalp Incision in Brain Tumor Surgery: Intraoperative and Postoperative Considerations.

Curcio, Antonello / Lorenzetti, Marco / Espahbodinea, Shervin / Angileri, Filippo Flavio / Esposito, Felice / D'Avella, Elena

World neurosurgery

2023 Volume 183, Page(s) e522–e529

Abstract: Background: Although the linear scalp incision is commonly used in neurosurgical practice, a systematic study elucidating its pros and cons in a specific surgical setting is lacking. Herein, we analyzed our experience with linear scalp incision in brain ...

Abstract	Background: Although the linear scalp incision is commonly used in neurosurgical practice, a systematic study elucidating its pros and cons in a specific surgical setting is lacking. Herein, we analyzed our experience with linear scalp incision in brain tumor surgery and the impact on intraoperative variables and postoperative complications. Methods: Patients undergoing brain tumor surgery (January 2014-December 2021) at 2 neurosurgical departments were included and divided into 2 groups: linear or flap scalp incision. Patients' demographics characteristics, surgical variables, and wound-related complications were analyzed. Results: More than a total of 1036 craniotomies, linear incision (mean length 6cm) was adopted in 282 procedures (27.2%). Mean maximum diameter of the craniotomy was 5.25 cm, with no statistical difference between the 2 groups. In emergency surgery (36 cases), the linear and flap incisions were used indifferently. Linear incision was predominant in supratentorial and suboccipital lesions. Flap incision was significantly more frequent among meningiomas (P < 0.01). Neuronavigation, operative microscope, and subgaleal drain were more frequently used in the flap scalp incision group (P = 0.01). Overall complication rate was comparable to flap scalp opening (P = 0.40). Conclusions: The use of the linear incision was broadly applied for the removal of supratentorial and suboccipital tumors granting adequate surgical exposure with a low rate of postoperative complications. Tumors skull base localization resulted the only factor hindering the use of the linear incision. The choice of 1 incision over another didn't show to have any impact on intraoperative and postoperative variables, and it remains mainly based on surgeon expertise/preference.
MeSH term(s)	Humans ; Scalp/surgery ; Scalp/pathology ; Craniotomy/methods ; Surgical Wound/complications ; Postoperative Complications/etiology ; Brain Neoplasms/pathology
Language	English
Publishing date	2023-12-29
Publishing country	United States
Document type	Journal Article
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2023.12.135
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Article: Tradeoffs among indoor air quality, financial costs, and CO

Faulkner, Cary A / Castellini, John E / Lou, Yingli / Zuo, Wangda / Lorenzetti, David M / Sohn, Michael D

Building and environment

2022 Volume 221, Page(s) 109282

Abstract: Adapting building operation during the COVID-19 pandemic to improve indoor air quality (IAQ) while ensuring sustainable solutions in terms of costs and ... ...

Abstract	Adapting building operation during the COVID-19 pandemic to improve indoor air quality (IAQ) while ensuring sustainable solutions in terms of costs and CO
Language	English
Publishing date	2022-06-16
Publishing country	England
Document type	Journal Article
ISSN	0360-1323
ISSN	0360-1323
DOI	10.1016/j.buildenv.2022.109282
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Article ; Online: How much cannabis is used in a joint in Australia? An experimental investigation into use by potency and frequency.

Dawson, Danielle / Stjepanovic, Daniel / Lorenzetti, Valentina / Hall, Wayne D / Leung, Janni

Drug and alcohol review

2023 Volume 43, Issue 1, Page(s) 226–232

Abstract: ... specific modes of use (i.e., 'how many joints do you use?'), which fail to capture variations in cannabis ... use and the diverse modes of use (e.g., joints, cones, spliffs). This study investigated how much ... 31, M: Results: The amount of cannabis used across different modes of administration was variable ...

Abstract	Introduction: Cannabis use is highly prevalent in Australia, yet current survey metrics measure tetrahydrocannabinol (THC) exposure with limited accuracy. Often survey items measure cannabis quantity by assuming specific modes of use (i.e., 'how many joints do you use?'), which fail to capture variations in cannabis use and the diverse modes of use (e.g., joints, cones, spliffs). This study investigated how much cannabis is used in these modes of administration in an Australian sample. Methods: Participants (N = 31, M Results: The amount of cannabis used across different modes of administration was variable: joints (range 0.10-1.25 g), spliffs (range 0.12-1.21 g) and cones (range 0.03-0.41 g). Participants who used cannabis daily rolled three times the amount of cannabis into a joint. Discussion and conclusions: The amount of cannabis used in common modes of administration may be highly variable. Daily use may be associated using larger quantities of cannabis. Titration attempts based on potency were not proportional or consistent across modes of administration. The results indicate people may adjust the quantity of cannabis based on perceived potency, however, not proportional to THC concentration. Inconsistency in the amount of cannabis used based on potency and within different modes of administration may represent a problem for self-report metrics which ask participants to report cannabis use in joints.
MeSH term(s)	Humans ; Adult ; Cannabis ; Australia ; Hallucinogens ; Self Report ; Surveys and Questionnaires
Chemical Substances	Hallucinogens
Language	English
Publishing date	2023-09-17
Publishing country	Australia
Document type	Journal Article
ZDB-ID	1080442-0
ISSN	1465-3362 ; 0959-5236
ISSN (online)	1465-3362
ISSN	0959-5236
DOI	10.1111/dar.13747
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Article ; Online: Chemical Recycling of Polyurethane Waste via a Microwave-Assisted Glycolysis Process.

Donadini, Riccardo / Boaretti, Carlo / Lorenzetti, Alessandra / Roso, Martina / Penzo, Diego / Dal Lago, Eleonora / Modesti, Michele

ACS omega

2023 Volume 8, Issue 5, Page(s) 4655–4666

Abstract: In this work, we explored a microwave-assisted glycolysis process to chemically recycle rigid polyurethane (PU) foam waste to obtain a single-phase product with suitable physio-chemical properties as a secondary raw material for the preparation of new ... ...

Abstract	In this work, we explored a microwave-assisted glycolysis process to chemically recycle rigid polyurethane (PU) foam waste to obtain a single-phase product with suitable physio-chemical properties as a secondary raw material for the preparation of new rigid PU products. Such an approach was compared to a conventionally heated (ConvH) process, analyzing the performances of different catalysts. The use of microwaves allowed a 94% decrease in the reaction time scale of rigid PU depolymerization, with a concurrent 45% reduction in energy expense. By using a PU/diethylene glycol mass ratio of 1.5, best performances were obtained with a 30 mmol/100g
Language	English
Publishing date	2023-01-27
Publishing country	United States
Document type	Journal Article
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.2c06297
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Article: Investigation of HVAC operation strategies for office buildings during COVID-19 pandemic.

Faulkner, Cary A / Castellini, John E / Zuo, Wangda / Lorenzetti, David M / Sohn, Michael D

Building and environment

2021 Volume 207, Page(s) 108519

Abstract: To minimize the indoor transmission of contaminants, such as the virus that can lead to COVID-19, buildings must provide the best indoor air quality possible. Improving indoor air quality can be achieved through the building's HVAC system to decrease any ...

Abstract	To minimize the indoor transmission of contaminants, such as the virus that can lead to COVID-19, buildings must provide the best indoor air quality possible. Improving indoor air quality can be achieved through the building's HVAC system to decrease any concentration of indoor contaminants by dilution and/or by source removal. However, doing so has practical downsides on the HVAC operation that are not always quantified in the literature. This paper develops a temporal simulation capability that is used to investigate the indoor virus concentration and operational cost of an HVAC system for two mitigation strategies: (1) supplying 100% outdoor air into the building and (2) using different HVAC filters, including MERV 10, MERV 13, and HEPA filters. These strategies are applied to a hypothetical medium office building consisting of five occupied zones and located in a cold and dry climate. We modeled the building using the Modelica
Language	English
Publishing date	2021-11-12
Publishing country	England
Document type	Journal Article
ISSN	0360-1323
ISSN	0360-1323
DOI	10.1016/j.buildenv.2021.108519
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Article: Assessing the use of portable air cleaners for reducing exposure to airborne diseases in a conference room with thermal stratification.

Castellini, John E / Faulkner, Cary A / Zuo, Wangda / Lorenzetti, David M / Sohn, Michael D

Building and environment

2021 Volume 207, Page(s) 108441

Abstract: The COVID-19 pandemic has highlighted the need for strategies that mitigate the risk of aerosol disease transmission in indoor environments with different ventilation strategies. It is necessary for building operators to be able to estimate and compare ... ...

Abstract	The COVID-19 pandemic has highlighted the need for strategies that mitigate the risk of aerosol disease transmission in indoor environments with different ventilation strategies. It is necessary for building operators to be able to estimate and compare the relative impacts of different mitigation strategies to determine suitable strategies for a particular situation. Using a validated CFD model, this study simulates the dispersion of exhaled contaminants in a thermally stratified conference room with overhead heating. The impacts of portable air-cleaners (PACs) on the room airflow and contaminant distribution were evaluated for different PAC locations and flow rates, as well as for different room setups (socially distanced or fully occupied). To obtain a holistic view of a strategy's impacts under different release scenarios, we simultaneously model the steady-state distribution of aerosolized virus contaminants from eight distinct sources in 18 cases for a total of 144 release scenarios. The simulations show that the location of the source, the PAC settings, and the room set-up can impact the average exposure and PAC effectiveness. For this studied case, the PACs reduced the room average exposure by 31%-66% relative to the baseline case. Some occupant locations were shown to have a higher-than-average exposure, particularly those seated near the airflow outlet, and occupants closest to sources tended to see the highest exposure from said source. We found that these PACs were effective at reducing the stratification caused by overhead heating, and also identified at least one sub-optimal location for placing a PAC in this space.
Language	English
Publishing date	2021-10-27
Publishing country	England
Document type	Journal Article
ISSN	0360-1323
ISSN	0360-1323
DOI	10.1016/j.buildenv.2021.108441
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Article ; Online: Efficacy of a Short-Term Lifestyle Change Intervention in Healthy Young Men: The FASt Randomized Controlled Trial.

Donato, Francesco / Ceretti, Elisabetta / Viola, Gaia Claudia Viviana / Marullo, Monica / Zani, Danilo / Ubaldi, Stefania / Sieri, Sabina / Lorenzetti, Stefano / Montano, Luigi

International journal of environmental research and public health

2023 Volume 20, Issue 10

Abstract: The aim of this study was to investigate the impact of dietary habits and physical activity intervention on lifestyle behavior as a prevention tool supported also by personalized motivational counseling. A two-arm randomized controlled trial was carried ... ...

Abstract	The aim of this study was to investigate the impact of dietary habits and physical activity intervention on lifestyle behavior as a prevention tool supported also by personalized motivational counseling. A two-arm randomized controlled trial was carried out. A sample of 18-22-year-old students was randomly assigned to a four-month intervention based on the Mediterranean diet and moderate physical activity program (N = 66) or to a control group (N = 63). The outcomes were adherence to the Mediterranean diet, physical activity level, and nutrients intake, assessed at enrollment (t0), end of intervention (t4, 4 months after the start), and end of follow-up (t8, 8 months after the start). Adherence to the Mediterranean diet increased from t0 to t4 and t8, more in the intervention (6.83, 9.85, and 9.12, respectively) than in the control group (6.73, 7.00, 7.69, respectively) (
MeSH term(s)	Male ; Humans ; Adolescent ; Young Adult ; Adult ; Life Style ; Exercise ; Energy Intake ; Diet, Mediterranean ; Feeding Behavior ; Healthy Lifestyle
Language	English
Publishing date	2023-05-13
Publishing country	Switzerland
Document type	Randomized Controlled Trial ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2175195-X
ISSN	1660-4601 ; 1661-7827
ISSN (online)	1660-4601
ISSN	1661-7827
DOI	10.3390/ijerph20105812
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Article ; Online: Do mindfulness-based interventions change brain function in people with substance dependence? A systematic review of the fMRI evidence.

Lorenzetti, Valentina / Gaillard, Alexandra / Beyer, Emillie / Kowalczyk, Magdalena / Kamboj, Sunjeev K / Manning, Victoria / Gleeson, John

BMC psychiatry

2023 Volume 23, Issue 1, Page(s) 407

Abstract: ... in the function of brain pathways implicated in mindfulness and addiction (e.g., anterior cingulate cortex and ...

Abstract	Background: Substance use disorders (SUDs) affect ~ 35 million people globally and are associated with strong cravings, stress, and brain alterations. Mindfulness-based interventions (MBIs) can mitigate the adverse psychosocial outcomes of SUDs, but the underlying neurobiology is unclear. Emerging findings were systematically synthesised from fMRI studies about MBI-associated changes in brain function in SUDs and their associations with mindfulness, drug quantity, and craving. Methods: PsycINFO, Medline, CINAHL, PubMed, Scopus, and Web of Science were searched. Seven studies met inclusion criteria. Results: Group by time effects indicated that MBIs in SUDs (6 tobacco and 1 opioid) were associated with changes in the function of brain pathways implicated in mindfulness and addiction (e.g., anterior cingulate cortex and striatum), which correlated with greater mindfulness, lower craving and drug quantity. Conclusions: The evidence for fMRI-related changes with MBI in SUD is currently limited. More fMRI studies are required to identify how MBIs mitigate and facilitate recovery from aberrant brain functioning in SUDs.
MeSH term(s)	Humans ; Mindfulness ; Magnetic Resonance Imaging ; Brain/diagnostic imaging ; Substance-Related Disorders/diagnostic imaging ; Substance-Related Disorders/therapy ; Behavior, Addictive
Language	English
Publishing date	2023-06-07
Publishing country	England
Document type	Systematic Review ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2050438-X
ISSN	1471-244X ; 1471-244X
ISSN (online)	1471-244X
ISSN	1471-244X
DOI	10.1186/s12888-023-04789-7
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