The Influence of Dowel-Bearing Strength in Designing Timber Pegged Timber Joints

ABSTRACT

The employment of timber pegs in timber structure joints is a widespread technology in the field of timber frame building in the United States, where the Timber Frame Engineering Council has published a special Standard to supplement the National Design Specification for Wood Construction. The authors have been studying the possibility of supplementing the Eurocode 5 design formulas, thought for timber joints with metal connectors, with specifications needed for a reliable design when employing timber pegs. The field of application envisaged is that of restoring timber structures and results obtained until now are quite encouraging. In this step of the research, more attention has been paid to deformation process: fir and chestnut samples have been tested to determine their dowel-bearing behavior with steel and ash timber peg while double-shear plane joints made of the same wood species, and fastened with steel as well as timber pegs, have been analyzed.     

The Post-Colonial Constitutional Order of the Commonwealth Caribbean: The Endurance of the Crown and the Judicial Committee of the Privy Council

ABSTRACT

Amongst Britain's former colonies the independent countries of the Commonwealth Caribbean represent something of an anomaly in so far as the majority of them remain constitutional monarchies and continue to retain the Judicial Committee of the Privy Council (JCPC) as their final appellate court, even though the region has had its own final appellate court – the Caribbean Court of Justice – since 2006. This is in marked contrast to Britain's former colonies in Africa and South Asia, the majority of which switched to republicanism soon after independence and at the same time abolished rights of appeal to the JCPC. This paper seeks to uncover the reasons for this anomaly by examining how the path that led to independence was shaped by a particular conception of Dominion status and by the willingness of nationalist leaders to embrace a dual identity: equal parts West Indian nationalist and Empire loyalist. It will also examine the phenomenon of the ‘postcolony’; being the persistence of the colonial order following the acquisition of constitutional independence. The paper has three aims. Firstly, to contribute to a better understanding of the impact of Dominion status and all that it symbolised in a region which is often overlooked in the scholarly literature on this topic. Secondly, better to understand the competing political forces that led three countries in the region to adopt republicanism, but inhibited its adoption elsewhere in the region. Thirdly, and finally, to enhance discussion of the complex nexus between republicanism and the abolition of rights of appeal to the JCPC where political and juridical considerations do not neatly align.     

A new antiarch placoderm from the Emsian (Early Devonian) of Wuding,Yunnan, China

Pan, Z., Zhu, M., Zhu, Y. &; Jia, L., August 2017. A new antiarch placoderm from the Emsian (Early Devonian) of Wuding, Yunnan, China. Alcheringa 42, 10–21. ISSN 0311-5518.

Wufengshania magniforaminis, a new genus and species of the Euantiarcha (Placodermi: Antiarcha), is described from the late Emsian (Early Devonian) of Wuding, Yunnan, southwestern China. The referred specimens were three-dimensionally preserved in black shales, allowing a high-resolution computed tomography reconstruction of anatomical details. The new euantiarch is characterized by a large orbital fenestra, an arched exoskeletal band around the orbital fenestra and a developed obtected nuchal area of the skull roof. Maximum parsimony analysis, using a revised data-set of antiarchs with 44 taxa and 66 characters, resolves Wufengshania gen. nov. as a member of the Bothriolepididae, which is characterized by the presence of the infraorbital sensory canal diverging on the lateral plate, and the nuchal plate with orbital facets. New analysis supports a sister group relationship between Dianolepis and the Bothriolepididae. Luquanolepis, a coeval euantiarch from the neighboring site of the new form, is referred to the Asterolepidoidei and represents the basalmost and earliest member of the Asterolepidoidei.

Zhaohui Pan* [panzhaohui@ivpp.ac.cn], Min Zhu* [zhumin@ivpp.ac.cn], You’an Zhu^? [zhuyouan@ivpp.ac.cn] and Liantao Jia [jialiantao@ivpp.ac.cn] Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, PR China. *Also affiliated with University of Chinese Academy of Sciences, Beijing, 100049, PR China. ^?Also affiliated with Uppsala University, PO Box 256, 751 05 Uppsala, Sweden.     

Al-Fārābī’s Cave: Aristotle’s Logic and the Ways of Socrates and Thrasymachus

In his commentary on Aristotle’s Rhetoric al-Fārābī harmonizes Plato and Aristotle in terms of philosophic education by ordering Aristotle’s eight logical works onto Plato’s famous image of the cave. He represents the way out of the cave with Aristotle’s four logical works of ascent (Categories, On Interpretation, Prior Analytics, and Posterior Analytics) and the return into the cave through Aristotle’s four logical works of the descent (Topics, Sophistical Refutations, Rhetoric, and Poetics). Al-Fārābī’s image of ascent and descent also alludes to Socrates’ conception of protreptic education in Book VII of the Republic. In essence, protreptic education consists in the Socratic art that freely turns the soul from the images and political interpretations of things to being itself. In this essay I argue that for al-Fārābī the four logical works of ascent guide the soul to free itself from its habituations so as to contemplate real beings, particularly the good of one’s own soul and the souls of one’s fellow citizens. Yet the ruler needs to use the arts of “descent,” as demonstrated by Thrasymachus, in order to rule the city well. The way of Socrates consists of the logical methods used to come to possess knowledge of being, while the way of Thrasymachus comprises the methods of persuasion to habituate citizens and protect the philosophic quest for the truth. Al-Fārābī, I conclude, combines the way of Socrates and the way of Thrasymachus in order to show that both ways are useful and necessary for good governance.     

Heritage transactions at the Festival of Pacific Arts

The Festival of Pacific Arts, hosted by a different Pacific Island state once every four years, is a prime site for the reproduction of the global discourse on heritage. Drawing on ethnographic research conducted at the festival, this paper focuses on how the concept of heritage is employed at the festival as both an instrument of statecraft and a tool for the assertion of grass-roots political and economic agency. We conclude that heritage in the context of the festival is a form of cultural practice involving relationships of power and inequality, expressed in transactions of ownership and value transformations that have become over determined by economic logic and the concept of property.