Characterization and Joining of an Historical Ferrous Tie-Rod

A ferrous tie rod, which was retrieved from a 17^th century masonry building, has been examined. The chemical composition and the microstructure of the tie-rod are consistent with the technology of the time.

The tie-rod was successfully welded to modern steel profiles, by means of gas metal arc welding, in order to verify if this method could be applied for restoration works. Threading tests were also successfully performed, for the same purpose.

Both the original tie-rod, and the welded specimens were thoroughly characterized with both metallurgical and mechanical methods; moreover, full-scale tensile tests were performed on both welded and threaded samples.     

媲美刘禹锡竹枝词的大型民族风物组诗——论舒位《黔苗竹枝词》的民族史料价值与艺术特点

清中叶著名诗人舒位的大型民族风物组诗《黔苗竹枝词》五十四首,从族源、民居、语言文字、饮食、歌舞乐器、服饰、婚配、丧葬祭祀、商业工艺、社会结构等内容,对黔苗的民族风物进行了全方位的描绘和抒写,在艺术风格上典雅清丽而充满趣味,具有珍贵的民族史料价值和极高的文学艺术价值。《黔苗竹枝词》的规模、内容和艺术特点,可勘媲美刘禹锡竹枝词,产生了很大影响。     

Generation as a social variable

ABSTRACT

In this short paper, I start with a case study – about how elementary school children in the early twentieth century in England understood their responsibilities vis-à-vis family (and school). This example provides a window into a past which deeply contrasts with present-day children’s and adults’ understandings and lives. I go on to consider (very briefly, for the field is vast) how ideas about childhood changed in the interwar years and how, since then, children have become locked into educational establishments – as well as into families. It seems to me that in these circumstances we are not used to thinking of children as thoughtful and active members of society. So it is no surprise to me that adults do not look to inter-relations with children as key variables towards understanding the social order. I note that my emphasis is on the UK, since I know most about that!     

Cultivating digital mediation: The implementation of publicly funded digital museum initiatives in Denmark

ABSTRACT

The aim of this article is to review and re?ect on the factors defining the expected benefits that have influenced the implementation of digital mediation initiatives in publicly funded museums over the course of the last 20 years. The expectations directed towards digital museum mediation are established by taking a closer look at Danish cultural policy implementation and socio-technological development. Examples from a review of cultural policy documents, funding applications and reports, supplemented by articles from a museum practice journal illustrate trends and developments in digital museum mediation. This article identifies a development of digital museum mediation in three phases, from providing access to digitized cultural heritage to more user-oriented communication strategies such as personalization and participation. The analysis shows that, in a cultural political context, the adoption of digital mediation in institutions is part of a higher strategy where technological development acts as a catalyst for innovation in the cultural sector.     

Axial Force Estimation in Historical Metal Tie-Rods: Methods,Influencing Parameters,and Laboratory Tests

This research focuses on estimating the axial force of historical metal tie-rods by means of non-destructive testing (NDT) which provides useful information for calibrating structural models. The first part of this work describes the behavior of tie-rods, emphasizing the key role played by cross-section stiffness, which is usually neglected in the case of cables. Particular attention is then given to common effective parameters and dynamic aspects in terms of acquiring the set-up and which modal parameters to examine.

For new insights into methods for assessing historical tie-rods and evaluating the reliability of analytical and numerical predictions, laboratory tests on four samples with typical cross-sections were carried out on historical metal tie-rods. A set of 224 configurations, including various methods of excitation, boundary conditions, and stress states, were analyzed. In addition to laboratory parameters, this analysis also includes details of sensor positions and number of modes to be examined, and proposes a simplification for less time-consuming tests on-site.     

Digital diaries: new uses of PhotoVoice in participatory research with young people

ABSTRACT

New technology offers extremely novel and useful ways of exploring ‘the everyday’ of young people’s lives and can include videos, live feeds filmed on social media, text messages, email communication, and messaging or headset communication on gaming consoles. The significance of mobile communication in the lives of young people means that digital diaries offers alternate ways of implementing PhotoVoice methods. This viewpoint proposes the ways in which digital diaries are a useful method of collecting data in research with young people and highlights the challenges and ethical concerns that must be considered when using this method.     

Routes as latent information—spatial analysis of historical pathways on the peripheries of the Victorian gold fields

Abstract

This article argues that the existing network of roads, arising from socially mediated human behavior, represents a well-preserved feature present across a broad region and contains latent historical information that can be retrieved using appropriate analytical techniques. It presents a method combining iterative cost path modeling and proximity analysis to reconstruct patterns of historical movement, and uses the results of this analysis as a heuristic tool to delineate regional social distinctions evident in characteristics of land appropriation and settlement within an area on the peripheries of the goldfields of central Victoria. The results of the least-cost route and proximity analysis presented in this paper delineate variations in patterns of movement across the study area that suggest distinctions in community development and character, adding depth and nuance to histories of the gold fields and their later years and supporting alternatives to assumptions of linear historical change.     

How Many Household Formation Systems Were There in Historic Europe? A View Across 256 Regions Using Partitioning Clustering Methods

Abstract

This paper reconsiders one of historical demography’s most pertinent research problems: the fiddly concept of historical household formation systems. Using a massive repository of historical census micro-data from the North Atlantic Population Project and the Mosaic project, the four markers of Hajnal’s household formation rules were operationalized for 256 regional rural populations from Catalonia in the west to central Siberia in the east, between 1700 and 1926. We then analyze these data using the Partitioning Around Medoids algorithm in order to empirically derive the “natural groups” based on the similarity and the dissimilarity of their household formation traits. Although regional differences between European household formation systems are readily identifiable, the two statistically most valid clustering solutions (k?=?2; k?=?4) provide a more complex picture of household formation regimes than Hajnal and his followers have been able to compile. Our finding that when regional populations cluster on similar household formation characteristics, they often come from both sides of Hajnal’s “imaginary line,” calls into question strict bipolar divisions of the continent. By and large, we show that the long-lived idea of two household formation systems in preindustrial Europe obscures considerable variability in historical family behavior, and therefore needs to be amended.     

文献与田野三视阈:中古州县治城位置考证方法研究——以唐代昌州治所变迁及静南县治地考辨为例

本文以唐代昌州治所变迁及静南县治地考辨为个案,提出文献分析与田野中的记忆、形胜、文物三视阈相结合,考证研究中古时期州县治城位置的方法。考证指出,唐代静南县必定不在今大足区龙水镇,也不在今大足区三溪镇,应在今大足区西五十里之地,旧称静南坝,即今大足区高升镇太和坝张家坝。乾元元年(758年),昌州初治昌元县,在今荣昌区盘龙狮子坝狮子林会龙桥,历史上又称旧州坝。大历四年(769年)迁移昌元县治到“南凭赤水,北倚长岩”的赖婆村,即今荣昌区河包镇。昌州因大历六年(771年)战乱而废,大历十年(775年)重置,至元和年间,昌州治和昌元县治地记载已不清晰,但至迟到元和八年(813年),昌州治所已经从昌元县改治静南县。到唐末景福元年(892年),昌州治从静南县改为大足县。考证过程中发现,由于传世历史文献地理认知上存在里程计算感性、方位坐标僵化、方位指向模糊、简脱衍串明显的“四大不精”,所以,在考证古代州县治地位置时,为了保证研究的信度,须用田野考察获取的乡土历史记忆、实地山川形胜、周边文物支撑三视阈对历史文献记载进行校证。     

A Multidisciplinary Study on the Seismic Vulnerability of St. Agostino Church in Amatrice following the 2016 Seismic Sequence

ABSTRACT

The big earthquake of August 24, 2016 and subsequent major shocks severely damaged many historic villages in Central Italy and dramatically showed the intrinsic vulnerability of the diffused architectural heritage. The St. Agostino church is one of the collapsed historical buildings, being inside the epicentre village of Amatrice. During the long seismic earthquake swarm, progressively the church was damaged and monitored. This multidisciplinary study of the damage of the church includes correlations of all the data derived from three steps geomatics surveys (3D aerial and terrestrial models): the archival drawings and images documenting previous events distressing the building, the previous strengthening intervention, and finally the seismic site response analysis (from Amatrice’s accelerometric station). Through a back analysis carried out by a finite elements model, it was possible to understand the seismic vulnerability of this historical building, in relation to the previous interventions and damage events. The proposed methodology, based on the interdisciplinary data analysis, provides useful information for the next strengthening projects of damaged historical monument.