More than Cleaning and Caring: The Profession of Dental Hygiene in Canada, 1951–2010

Dental hygiene has been a female-dominated profession that worked primarily for dentists who, until very recently, were usually male. This article explores the early history of dental hygiene in Canada during the 1950s and 1960s; its explosive growth in the 1970s; the influence of feminism on the profession; and the battles dental hygienists fought to improve the status of their profession including better educational opportunities; professional self-regulation and the right to practice independently of dentists. It argues that dental hygienists have made important gains, and yet the culture of ‘caring’ continues to complicate their professional status.     

一种油画颜料层裂纹的修复技术分析

油画颜料层裂纹是一种常见的病害类型,严重的裂纹会影响作品的视觉效果。裂纹修复所采取的措施应以缓解病害,延续寿命为目标,避免不当修复对其文物价值的改变。本研究通过红外光谱和便携式X荧光能谱分析,初步确定了裂纹产生的原因与材料技法和机械作用力有关,长期的温湿度波动则是最终形成老化裂纹的重要因素。对两类常见的裂纹加固方法比较后得出结论,色蜡改变了原画的光泽度和肌理层,动物胶调碳酸钙更适宜作为裂纹的填补材料。观察修复后的油画保存状况,发现经过修复的颜料层仍存在继续劣化的风险,必须维持保存环境的相对稳定,方可延长修复周期。     

The imperial word and its margins. Language and colonization in the Americas

Nouveau Monde et renouveau de l'histoire naturelle, vol. 2. Edited by Marie‐Cecile Benassy and Jean‐Pierre Clement. Paris: Presses de la Sorbonne Nouvelle, 1993. Pp. 135.

Langues et cultures en Amérique espagnole coloniale. Edited by Marie‐Cecile Benassy‐Berling, Jean‐Pierre Clement and Alain Milhou. Paris: Presses de la Sorbonne Nouvelle, 1993. Pp. 328.

Relecturas del Barroco de Indias. Edited by Mabel Moraña. Hanover, New Hampshire: Ediciones del Norte, 1994. Pp. xii, 334.

Early Images of the Americas: Transfer and Invention. Edited by Jerry M. Williams and Roberte. Lewis. Tucson: University of Arizona Press, 1993. Pp. xviii, 319.

Discursos sobre la “invención” de América. Edited by Iris Zavala. Amsterdam and Atlanta: Editions Rodopi, 1992. Pp. 294.     

The Greek Neolithic: A new review

The Greek Neolithic, here divided into five phases, is the oldest in Europe. Geographically, it is the closest to the Near East and has thus long been seen as an impoverished derivative of the latter. However, recent research has tended to emphasize the autochthonous nature of Neolithic development in Europe, including Greece. The Greek Neolithic economy, which was based almost entirely on domesticates, and its densely packed, long-lived villages strongly recall the Near East, as do also the early emphasis on fine, decorated, nonculinary pottery and the wealth of figurines. On the other hand, the evolution of stylistic patterns is specifically Greek, although generally related to trends in the Balkans. Originality in the development of the Greek Neolithic is also seen in its latest phase, with apparent decreases, rather than increases, in site density, social differentiation, and, to some extent, long-distance trade. At the same time, however, the dichotomy became much sharper between the rich agricultural plains of northern Greece and the more pastoral(?) regions of the Peloponnese and Cycladic Islands; this presages similar contrasts during the Bronze Age.     

张家界市博物馆明代铜佛像的多视角影像三维重建探索

由于多视角影像三维重建具有数据采集方便灵活、硬件成本低、操作简单、自动化程度高的特点,因此,选用多视角影像三维重建技术对张家界市博物馆明代铜佛像进行三维建模。通过描述佛像立面与空心底部的影像采集,再应用Agisoft PhotoScan软件进行三维重建的过程;从控制点的三维坐标与误差数值、模型成像与影像图的误差分析,得出佛像三维模型的精度误差微小的结论,证明该技术具有操作简单、模型成像清晰的特点。与三维激光扫描技术相比较,多视角影像三维重建技术具有成本费用低、工作流程高效简捷的优势,更适合在文物工作中推广运用。