Spectrochemical Characterization of Red Pigments Used in Classic Period Maya Funerary Practices

We studied the composition, colour chromaticity and form of application of red pigments in human bone samples from seven Classic period Lowland Maya sites. The samples were analysed by X‐ray diffraction, scanning electron microscopy (SEM) and X‐ray energy‐dispersive spectroscopy (EDS). Colour was measured using conventional colour identification standards (Munsell) and reflectance spectroscopy. Cinnabar and hematite were identified as the pigments used. We conclude that the reflectance method has advantages over conventional visual results, as it provides precise, objective and quantifiable optical data to distinguish the chromaticity, colour saturation and brightness of the pigments.     

Gendering boundary work: exploring excluded spaces in supermarket job rotation

The article explores the establishment of gendering divides in organisations by bridging Hernes' (2004) typologies of physical, social and mental boundary work with notions on the practice of gender as negotiated in everyday organisational activities. In the investigated Swedish supermarket, the pre-store, a narrow, front-stage space in which only women worked, was excluded from the job rotation that otherwise dominated the organisation of work in the store. This study examines: (1) how and on what grounds the divides of the pre-store were established in the supermarket and (2) how spatial divides were incorporated into the practice of gender and work in the supermarket. The findings suggest that the divides that are visible through the exclusion of the pre-store from the job rotation involved not only the allocation of work and space but also multiple and complex physical, social and mental spatial negotiations undertaken by both employees and managers. Together, these factors neutralised the divides as an aspect of the activities. First, the notion that gender was irrelevant for organisational decisions makes gender a non-issue for the organisation of the pre-store activities. Second, the notion that women and men are essentially different provided a ground for explaining why, despite being an organisational non-issue, work and workers were in fact organised along gendered lines in the supermarket. The study contributes with qualitative insights regarding the micro-political practices that make gender into a neutralised non-issue in organisations and, in particular, the intertwinement of spatial practices and negotiations.     

Different staining substances were used in decorative and therapeutic tattoos in a 1000-year-old Peruvian mummy

From a 1000-year-old mummy, found unwrapped in the sand of the desert at Chiribaya Alta in Southern Peru, two different kinds of tattoos were investigated: decorative tattoos displaying different animals and symbolic ciphers were present on the extremities and tattooed circles on the neck region.     

Children and playgrounds in Mediterranean cities

This paper presents the first results of a case study on the ways in which playgrounds are constructed and experienced in children's daily lives in two medium sized Mediterranean Catalan cities. The research is based on qualitative methodology through participant observation and interviews with institutional actors. Our research suggests that playgrounds are organised around age as the central category; nevertheless, gender is important in the use and activities developed as children get older. Specific aspects from Mediterranean and medium-sized cities are raised such as a positive perception and an intense use of public space by both adults and children. Specific childhood policies in city planning and a stronger gender awareness among institutional actors would improve the social role of playgrounds as participatory, socialising and inclusive spaces.     

Access to capital markets and the geography of productivity leaders and laggards

This paper examines whether access to the capital market of convertible and nonconvertible bonds affects total factor productivity (TFP) for the population of Italian joint stock manufacturing companies, based in highly segmented local financial markets, between 2007 and 2017. The hypothesis, well grounded in the literature, is that long-term capital favors investment in intangibles and other risky assets necessary for productivity growth. To identify this effect, we exploit the exogenous shock of the Italian banking deregulation of the mid-1990s as an instrument for firm-level access to capital, interacted with distance from logistic networks. These reforms changed the distribution of the type of branches at the local level, increasing the share of joint stock banks, which have high connections to international capital markets. This geographical reallocation of banking activities ultimately affected firms' financial structure, favouring their access to capital, even when based in peripheral financial areas. Firms which issued instruments of market debt achieved higher levels of productivity and a higher probability to reach top percentiles of productivity distribution.     

Incentives for the Iranian Chemical Boom: A Strategic Motivation or Applied Needs?

Iran's scientific impact has suffered hard from decades of imposed and self‐elected isolation from Western influences and international collaboration. Lately, however, the world has witnessed a remarkable increase in scientific publications from Iranian scientists in fields like nanotechnology; material science; and, perhaps most pronounced, chemistry. In this article, the factors behind this “publication boom” are discussed and examined together with an analysis of the coherence between the country's long‐term research strategies and short‐term needs in relation to present organic chemical research conducted at various Iranian universities and institutes. Organic chemistry is a keystone in important Iranian industrial sectors like the petroleum and agricultural industries, and also in the growing field of life science and pharmacology. The development of the petroleum industry and further refinement of raw oil into value‐added fine chemicals holds a key position in the reinforcement of the Iranian economy and labor market, thus motivating a governmental investment in chemical science and research. Taking an approach to find a reasonable balance with the impact from Western and Far Eastern scientific communities, Iran's own scientific roots and Islamic ideology could well be the success factor in becoming a worthy player on the international scientific arena.     

Evolution of Polynesian bark cloth and factors influencing cultural change

The origin and dispersal of the first human inhabitants of the Polynesian Triangle have been studied from many perspectives and significant progress in our understanding of Polynesian prehistory has derived from an intermingling of linguistics, archaeology, and genetics. Contributions from the ethnographic record, however, have been limited by the dearth of comparative methods that are useful for reconstructing prehistory and identifying and analyzing cross-cultural trends. For more than fifty years, cladistic phylogenetic methods have been used to reconstruct the evolutionary history of biological systems from contemporary trait distributions. These rigorous methods are applied herein to reconstruct the prehistoric evolution and dispersal of Polynesian bark cloth, using ethnographic data recorded since European contact with Polynesian cultures. Contrary to expectation given the earlier settlement of Western Polynesia, the Eastern Polynesian bark cloth traditions retained many ancestral features. In contrast, a suite of innovations appear in the Western Polynesian bark cloth traditions and it is asserted herein that the distribution of these traits may be associated with the rise of the Tongan maritime Empire. Within Eastern Polynesia, the pattern of diversification of bark cloth traditions is consistent with the breakdown of interaction spheres late in the settlement era.