ARUd’A (Università “G. d’Annunzio CHIETI -PESCARA)
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In Vitro Wear Properties of a New CAD/CAM Dental Resin Composite in a Chewing Simulation Test Opposing Itself
Get PDFWear resistance is of paramount importance for the long-term success of dental materials, especially when they are used for extensive indirect restorations in full-mouth rehabilitations. The present in vitro study aimed to evaluate the two-body wear resistance of a new and recently introduced CAD/CAM resin composite disc (Ena Cad, Micerium S.pA.), to compare it to the wear resistance of other two well-known and already marketed CAD/CAM composites (Brilliant Crios, Coltene/Whaledent AG; Grandio disc, Voco Gmbh) and to a conventional type 3 gold alloy (Aurocast 8, Nobil-Metal). Ten cylindrical specimens (diameter 8 mm, height 6 mm) were manufactured with each material and subjected to a two-body wear test in a dual-axis chewing simulator, performing 120,000 chewing cycles opposing antagonists (2-mm-diameter round tip) made out of the same corresponding materials. The total vertical wear (mm) and the total volumetric loss (mm3) for each sample/antagonist pair were calculated. Representative scanning electron microscope images were also taken. Data were statistically analyzed using one-way analysis of variance tests. No statistically significant differences were recorded among the wear properties of the restorative materials under investigation. The Ena Cad disc showed a wear resistance comparable to the type 3 gold alloy and to the already marketed Brilliant Crios and Grandio disc
The broadcasting trap: TikTok and the “democratization” of digital content production
Get PDFSocial media and digital production tools have provided a big impulse to the possibility of a
democratization of content production. However, enhanced viability does not imply an actual
capacity to tap into the opportunity. Research on social media participation shows that
content production, and especially the most popular content, is mostly driven by a small elite
of super-users, and an additional but still small share of content creators. In this paper, we
wonder whether a more recent social media such as TikTok, whose design features are
optimized to facilitate content production and to enhance visibility of content from unknown
users, actually makes a difference in this regard. To do so, we analyzed the production and
networking patterns observed on a large database of 24,992,678 videos posted by 6,973,120
unique users on TikTok between October 2014 and December 2019. We find that in TikTok,
the implicit operational logic is that of broadcasting. To spark a real democratization in digital
content production, it is necessary to overcome this model and to embrace more radical
forms of production and distribution, most notably intrinsically collective forms of online
creation. Insofar as content production reflects a broadcasting logic, no targeted changes in the design features are likely to substantially affect the patterns of active participation in social media such as TikTok
Beyond Time: The Aesthetic Dimensions of Olivetti’s Legacy
No full textPrevious studies have mainly viewed aesthetics as a static organizational resource. In contrast, we investigate how aesthetics emerges, evolves, and endures over time. Using (visual) discourse analysis, we examine Olivetti, a major manufacturer of office products and a significant organization in twentieth-century Italian industrial and cultural history. By analyzing Olivetti’s historical artifacts, integrating visual images and written texts, we identify four aesthetic dimensions: ethical, executive, experiential, and mnemonic. These dimensions form a recognizable style in Olivetti’s artifacts, constituting the organization’s aesthetic legacy. This legacy connects individual and collective activities to the organization over time. Our study provides a dynamic perspective on aesthetics, highlighting its multidimensional and historical nature through artifact-mediated interactions that link the past with the present in understanding historical organizations
Physical performance and bioelectrical impedance vector analysis of female track and field athletes according to the follicular phase of the menstrual cycle
No full textPurpose: The menstrual cycle (MC) and body composition are key biological variables in the study of female sports performance. This study aims to evaluate changes in body composition and performance during the follicular phase of the MC and verify any possible relationship between these changes. Methods: This cross-sectional study included 12 female track and field athletes (age 22.3 ± 2.6 years). Body composition was assessed using bioelectrical impedance vector analysis (BIVA), and physical performance was evaluated through tests of muscle flexibility, vertical and horizontal jump, speed, and endurance. Assessments were conducted during the early follicular phase (EF) and the late follicular phase (LF). Differences were analyzed using the paired sample t test, while Pearson’s correlation was applied to assess relationships between BIVA and performance variables across the EF and LF phases. Results: During the EF phase, standing long jump performance was reduced (2.36 ± 0.15 m vs. 2.40 ± 0.16 m; p < 0.03), and 400-m run times were slower (69.38 ± 5.68 s vs. 67.77 ± 6.22 s; p < 0.003) compared to the LF phase. No significant differences were observed in other performance parameters. No conclusive correlations were identified between BIVA values and physical performance across the EF and LF phases. Conclusion: Female athletes’ performance during the MC may be influenced by various factors. However, biological variables such as body composition likely offer only partial insights into these variations. A multidisciplinary and individualized approach is, therefore, recommended to optimize sports performance
Commento all’art. 5, Testo unico imposte sui redditi a cura di A. Magliaro, A. Scaglia, S. Ariatti
No full textPorta Nova/Napoli a Sulmona: dalle origini medievali alle trasformazioni dei secoli successivi
No full textGlobal Trends and Collaborative Dynamics in Environmental Management Accounting: A Comparative Analysis
No full textThis study offers a comprehensive examination of Environmental Management Accounting (EMA) trends and collaborative dynamics, focusing on the impact of the European Green Deal and other global initiatives. By employing a combination of bibliometric and semi-systematic review methodologies, this study investigated the development of EMA practices, particularly in response to institutional pressures and new sustainability reporting standards. Despite extensive research on EMA worldwide, there is a noticeable concentration of scholarly activity in certain countries, with European nations excluding Germany showing limited engagement. This research emphasizes the progression of EMA in effectively managing environmental impacts within the corporate sector, revealing that while significant theoretical advancements have been made, the practical applications of EMA remain relatively underexplored. These findings underscore the need for increased research efforts and more effective policy frameworks, particularly in the European context, to facilitate the integration of EMA practices in line with recent legislative changes. This study aims to provide a clearer understanding of global EMA trends, the state of collaborative research, and implications for policy and practice in environmental accounting
Wild boar management and environmental degradation: a matter of ecophysiology - the Italian case
No full textDespite its global distribution, the impacts of wild pigs on the environment are poorly 9 understood. However, wild boar (Sus scrofa) is recognized as a pest species, causes extensive dam-10 age to agriculture, biodiversity, forests, and contributing to motor vehicle accidents. This study in-11 vestigates the causes and mechanisms underlying the demographic explosion of wild boar in Italy. 12 The analysis is based exclusively on official datasets from Italian governmental institutes, allowing 13 quantitative correlation between population dynamics, culling rates, and economic impacts. By in-14 tegrating historical data, population biology, reproductive physiology, and chemical communica-15 tion, the study reveals that anthropogenic pressures, counterintuitively driven by wildlife manage-16 ment practices, have significantly contributed to population growth. A shift from a K-strategy to an 17 r-strategy in reproductive behavior, induced by sustained control pressure, has led to increased 18 birth rates and accelerated expansion. Disruptions in species homeostasis trigger harmful changes 19 in ecosystem structure and functionality, delineating a model of environmental damage. These find-20 ings highlight the urgency of adopting an integrated wildlife management approach that combines 21 conservation biology and physiological principles with targeted operational interventions to pre-22 vent further degradation affecting both the species and the ecosystem
Correction: Patano et al. Mandibular Crowding: Diagnosis and Management—A Scoping Review. J. Pers. Med. 2023, 13, 774
No full textFollowing discussions between the Editorial Board and the authors, the original published references numbered 47 and 48 have been removed from this paper [1], and reference number 47 has been replaced by the following reference: Myser, S.A.; Campbell, P.M.; Boley, J.; Buschang, P.H. Long-term stability: Postretention changes of the mandibular anterior teeth. Am. J. Orthod. Dentofac. Orthop. 2013, 144, 420–429. Myser, S.A.; Campbell, P.M.; Boley, J.; Buschang, P.H. Long-term stability: Postretention changes of the mandibular anterior teeth. Am. J. Orthod. Dentofac. Orthop. 2013, 144, 420–429. Along with the deletion of reference 48, references 49–52 were re-numbered as references 48–51. And the citations of references 49–52 in the main text have been updated with the numbers 48–51. Corresponding updates have also been made to the References section and to the citations throughout the manuscript. The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated