Different glassmaking technologies in the production of Iron Age black glass from Italy and Slovakia

This study presents the results of an archaeometrical investigation performed on 75 black glass beads dated to the ninth–fifth century BC coming from Bologna, Cumae, and Pozzuoli (Italy), and Chotin (Slovakia). The analyses of the major, minor, and trace elements—as well as that of Sr and Nd isotopes performed on a selection of samples coming from Bologna—provided evidence for two different production technologies in Iron Age black glass found in Italy (natron glass, probably produced in Egypt) and Slovakia (wood ash glass, probably produced in Europe). In both cases, the glasses derive their black colouration from the high presence of iron (around 12 % FeO), introduced into the glass batches through the intentional choice of dark sands. The production model appears to be small-scale and experimental, characterised by the use of non-sorted raw materials and poorly defined formulae, producing glass with a high chemical variability. The wood ash technology appears to have dropped out of use in Europe until the Medieval period, while natron production spread quickly, becoming predominant throughout the Mediterranean.     

Australia’s engagement with the European Union: partnership choices and critical friends

ABSTRACT

This article examines the development of Australia’s relationship with the European Union (EU) by focusing on drivers and obstacles. Underlying the relationship are the burden of memory and common interests and values. It argues that, although the past still resonates, the changes to the range and depth of interests and values have resulted in a more fruitful engagement. It suggests that a history of a negatively framed context of engagement, characterised by Australian critiques of the EU and, in turn, by EU neglect of the relationship, has contributed to distance between the two interlocutors. It is only in recent years that this distance has been bridged and perceptions have changed. Australia has chosen partnerships with the EU that enhance its economic and political choices. Links with a long-term partner, the UK, are being recast as Brexit presents a new challenge at a time of Australia’s stronger engagement with the EU through a key agreement and trade talks. Finally, the article argues that Australia and the EU are critical friends.     

Glass and glass production in the Oman peninsula in antiquity reconsidered – chemical and mineralogical investigation of sands

A batch of green‐ and amber‐coloured glass chunks and unguentaria dating from the first century CE was found in 2007 at Dibba al Hisn, a site on the Arabian Sea coast of the United Arab Emirates (UAE). Its elemental and isotopic composition revealed the glass to be of a previously unknown plant ash glass type, different from known contemporary Roman, Mesopotamian, and Indian glass. The Sr isotopic composition of the glass corresponds to locally available plants, pointing to the possible existence of a first‐century CE local glass production centre. To explore this possibility, sands from around the UAE were analysed to establish their suitability for glass making and correspondence with the Dibba finds. This paper presents the results of the elemental analysis of fourteen sands. The analysis, performed using inductively coupled plasma optical emission spectroscopy (ICP‐OES), revealed all sands to be rich in lime and alumina. X‐ray diffraction revealed the presence of calcite and other carbonate minerals, as well as antigorite and quartz. Comparison of the sand compositions to average first‐century CE non‐Roman glass found at Dibba showed them to be unsuitable as raw material for producing the glass of Dibba. The evidence thus identifies this glass batch as imported, contrary to what was suggested before. This paper also reviews the occurrence of thick‐walled unguentaria in the region.     

The Influence of Data Aggregation on the Stability of p-Median Location Model Solutions

Location planning often makes use of data in an aggregate form without a clear understanding of the consequences. Although research has been directed toward addressing aggregate data usage in location planning, there have been conflicting findings on the stability of location model solutions obtained using aggregated data. This paper analyzes the question of location model solution stability from a somewhat different perspective than previous researchers in that locational configurations identified for aggregate data are evaluated using the original disaggregate data. Analytical results demonstrate that a high level of solution stability does exist when aggregated data are utilized. Further, this analysis is based upon the use of what can be expected to be worst case aggregation approaches. This suggests that the use of aggregate data is adequate for conducting locational studies.     

The last laugh: Western Australia's elections and the executive state, 1983–89

Aside from bribery and corruption associated with the police and organized ‘vice and crime’, Mr Tony Fitzgerald Q.C. highlighted in his ‘Report’ five criteria as areas of concern over the health and future of parliamentary democracy in Queensland. They were: 1. Decline of Parliament in terms of (a) sitting hours, and (b) consistent refusal by the Premier and Ministers to answer parliamentary questions and to be fully accountable and responsible to Parliament for public expenditures, ministerial expenses and extra‐parliamentary executive decisions; 2. Business deals, joint ventures and other financial transactions between government, its agencies and government favourites; 3. Lavish funding of the governing political party by recipients of its favours; 4. Political ‘stacking’ of the public service; 5. Use of taxpayers’ funds by Premier and Ministers to finance writs against critics.