Viscoelastic and mechano-sorptive studies applied to the conservation of historical violins: A case study of the Guarneri “del Gesù” violin (1743) known as the “Cannone”     

Marco Fioravanti  Giacomo Goli  Bruce Carlson 《Journal of Cultural Heritage》2013,14(4):297-303

To assess the possible effects of mechanical loading on the conservation of historical wooden musical instruments, a research project was carried out on the violin Guarneri “del Gesù” (1743), known as the “Cannone”. This paper refers to the results obtained by studying the deformations to which a violin is subjected after being tuned, with special attention to the viscous and mechano-sorptive behaviour (as in a concert environment for example). The amount of viscoelastic creep was quantified under normal tuning conditions, and the mechano-sorptive creep was quantified using a dead mass resulting in 55% of the elastic deformation obtained after tuning. The viscoelastic and mechano-sorptive deformations were clearly observed. These deformations were completely recovered once the violin was unloaded, demonstrating that this violin structure is appropriately dimensioned for the applied stresses.  相似文献   

Students home alone—profiles of internal and external conditions associated with mathematics learning from home     

Hofer  Sarah I.  Reinhold  Frank  Koch  Marco 《European Journal of Psychology of Education - EJPE》2023,38(1):333-366

European Journal of Psychology of Education - This study aims at describing differences in internal and external resources of students to handle mathematics learning from home. Based on data from...  相似文献   

Misconceptions,Knowledge, and Attitudes Towards the Phenomenon of Radioactivity     

Morales López  Ana Isabel  Tuzón Marco  Paula 《Science & Education》2022,31(2):405-426

Science & Education - The teaching of the phenomenon of radioactivity is considered a key ingredient in the path towards developing critical thinking skills in many secondary science education...  相似文献   

The fit of planning methods for the part manufacturing industry,a case study     

Philipp Spenhoff  ;Marco Semini  ;Erlend Alfnes  ;Jan Ola Strandhagen 《上海大学学报(英文版)》2014,(2):165-172

This paper investigates the specific planning environment of an automotive part manufacturer and characterizes this environment based on variables regarding the product,its demand and the manufacturing process.The fit of different planning methods,namely material requirements planning,reorder point,cyclic planning,kanban,and heijunka to this specific planning environment is analyzed and evaluated by exploratory research.The results show that different product characteristics make it hard to apply a single planning method.None of the investigated methods show the ability to cover the complex requirements of a combined planning environment of two partly divergent product types with a deep value chain.  相似文献   

Interferential therapy effect on mechanical pain threshold and isometric torque after delayed onset muscle soreness induction in human hamstrings     

Clarice S. Rocha  Fábio J. Lanferdini  Carolina Kolberg  Marcelo F. Silva  Marco A. Vaz  Wania A. Partata 《Journal of sports sciences》2013,31(8):733-742

Abstract

This study was undertaken to examine the acute effect of interferential current on mechanical pain threshold and isometric peak torque after delayed onset muscle soreness induction in human hamstrings. Forty-one physically active healthy male volunteers aged 18?33 years were randomly assigned to one of two experimental groups: interferential current group (n = 21) or placebo group (n = 20). Both groups performed a bout of 100 isokinetic eccentric maximal voluntary contractions (10 sets of 10 repetitions) at an angular velocity of 1.05 rad · s^?1 (60° · s^?1) to induce muscle soreness. On the next day, volunteers received either an interferential current or a placebo application. Treatment was applied for 30 minutes (4 kHz frequency; 125 μs pulse duration; 80?150 Hz bursts). Mechanical pain threshold and isometric peak torque were measured at four different time intervals: prior to induction of muscle soreness, immediately following muscle soreness induction, on the next day after muscle soreness induction, and immediately after the interferential current and placebo application. Both groups showed a reduction in isometric torque (P < 0.001) and pain threshold (P < 0.001) after the eccentric exercise. After treatment, only the interferential current group showed a significant increase in pain threshold (P = 0.002) with no changes in isometric torque. The results indicate that interferential current was effective in increasing hamstrings mechanical pain threshold after eccentric exercise, with no effect on isometric peak torque after treatment.  相似文献   

Use of education as social indicator in the assessment of sustainability throughout the life cycle of a building     

Marco A. Ruano  Marcos García Cruzado 《European Journal of Engineering Education》2012,37(4):416-425

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Anatomy 3.0: Rediscovering Theatrum Anatomicum in the wake of Covid-19     

Marco Antonio de Carvalho Filho  Frederic W. Hafferty  Wojciech Pawlina 《Anatomical sciences education》2021,14(5):528-535

The Covid-19 pandemic has challenged medical educators internationally to confront the challenges of adapting their present educational activities to a rapidly evolving digital world. In this article, the authors use anatomy education as proxy to reflect on and remap the past, present, and future of medical education in the face of these disruptions. Inspired by the historical Theatrum Anatomicum (Anatomy 1.0), the authors argue replacing current anatomy dissection laboratory (Anatomy 2.0) with a prototype anatomy studio (Anatomy 3.0). In this studio, anatomists are web-performers who not only collaborate with other foundational science educators to devise meaningful and interactive content but who also partner with actors, directors, web-designers, computer engineers, information technologists, and visual artists to master online interactions and processes in order to optimize students' engagement and learning. This anatomy studio also offers students opportunities to create their own online content and thus reposition themselves digitally, a step into developing a new competency of stage presence within medical education. So restructured, Anatomy 3.0 will prepare students with the skills to navigate an emergent era of tele and digital medicine as well as help to foreshadow forthcoming changes in medical education.  相似文献   

Word-to-text integration in English as a second language reading comprehension     

Mulder  Evelien  van de Ven  Marco  Segers  Eliane  Krepel  Alexander  de Bree  Elise H.  de Jong  Peter F.  Verhoeven  Ludo 《Reading and writing》2021,34(4):1049-1087

Reading and Writing - We assessed the relationship between word-to-text-integration (WTI) and reading comprehension in 7th grade students (n?=?441) learning English as a second language...  相似文献   

Certainties and mysteries in the within-trial contrast literature: A reply to Zentall (2008)     

Marco Vasconcelos  Peter J. Urcuioli 《Learning & behavior》2008,36(1):23-25

Contrary to Zentall’s (2008) hypothesis that extensive overtraining is required in order to obtain the work ethic effect in pigeons, we find no evidence of this in two separate paradigms designed to assess preference for stimuli encountered after high effort. In light of these findings, along with our previously published results and those of Arantes and Grace (2008), we maintain that the work ethic effect is not a reliable phenomenon in pigeons. On the other hand, we are uncertain about the reason(s) underlying the different preference profiles for high- versus low-deprivation stimuli as a function of successive versus simultaneous discrimination training (Vasconcelos & Urcuioli, 2008). Nevertheless, we disagree with Zentall that additional analyses of the sort he suggests support the conclusion that both training regimens yield within-trial contrast effects.  相似文献   

Music consumption at the dawn of the music industry: the rise of a cultural fad     

Marco Guerzoni  Massimiliano Nuccio 《Journal of Cultural Economics》2014,38(2):145-171

This paper discusses the extent to which sociodemographic characteristics of consumers and their past consumption are less effective in explaining the decision of purchasing a cultural good than the characteristics of the product itself, which allow for imitative behaviors and are at the basis of distinction. While the former approaches are well documented in the literature, the latter refers to Bourdieu’s idea of objectified cultural capital, which has been revisited and empirically explored. Because the various causal effects interact with each other, this paper tests a theoretical model which matches individual characteristics of the consumer with the properties of the cultural product. Specifically, we discussed the emergence of a new version of a cultural good, which is able to broaden the dimension of the market by gaining rapid success in its audience. This diffusion pattern is a quite rare event, but disruptive for the market and extremely profitable for the producer. The authors label this occurrence a disruptive cultural fad and try to understand the determinants of its adoption. The hypotheses of the model are tested on a unique dataset of microdata of purchasing transactions in Milan in the early nineteenth century, when the music by Gioachino Rossini emerged as a disruptive cultural fad at the dawn of the music industry. Results show that key features of a successful disruptive cultural fad are the role of some specific patterns of personal past consumption, the capabilities of generating positive network externalities in the consumption, and, surprisingly, the lack of negative ones due to any possible hip or snob effect.  相似文献