Consolidated Markets, Brand Competition, and Orange Juice Prices

This paper examines how consolidation in the marketing system affects prices for orange juice. We isolated the pricing behavior of brand marketers, wholesalers, and retailers by observing the retail prices for specific orange juice products, including leading national brands and private label brands, in 54 U.S. markets over a 1-year period. The data provided little compelling evidence that consolidated markets engaged in non-competitive pricing behavior. Increased brand competition, particularly between private labels and leading national brands, did, however, appear to lower average market prices.consumer demographics, national brands, orange juice, price behavior, private labels, wholesaler concentration, retailer concentration, Demand and Price Analysis, Industrial Organization,

Ultrahigh-temperature regeneration of long period gratings (LPGs) in boron-codoped germanosilicate optical fibre

© 2015 by the authors; licensee MDPI, Basel, Switzerland. The regeneration of UV-written long period gratings (LPG) in boron-codoped germanosilicate “W” fibre is demonstrated and studied. They survive temperatures over 1000 °C. Compared with regenerated FBGs fabricated in the same type of fibre, the evolution curves of LPGs during regeneration and post-annealing reveal even more detail of glass relaxation. Piece-wise temperature dependence is observed, indicating the onset of a phase transition of glass in the core and inner cladding at ~500°C and ~250°C, and the melting of inner cladding between 860°C and 900°C. An asymmetric spectral response with increasing and decreasing annealing temperature points to the complex process dependent material system response. Resonant wavelength tuning by adjusting the dwell temperature at which regeneration is undertaken is demonstrated, showing a shorter resonant wavelength and shorter time for stabilisation with higher dwell temperatures. All the regenerated LPGs are nearly strain-insensitive and cannot be tuned by applying loads during annealing as done for regenerated FBGs

Ethics and Multicultural Contexts: Understandings and Applications

This article focuses on the interaction of ethics with multicultural understandings of people and practice. We explore the place of biblical narratives, and their usefulness and application to understanding diversity and our work in multicultural contexts. Biblical stories suggest that diversity reflects an enduring aspect of God\u27s kingdom, the continued presence of sin, and an arena for divine intervention and restoration. We also examine some of the ethical dilemmas that arise when applying ethical codes to clinical work with people from multicultural backgrounds. These include multiple relationships, informed consent, self-disclosure, and worldview perspectives. We use case examples to illustrate some of the dilemmas and propose changes that need to be made to bring resolution to the dilemmas. We hope that readers will better understand how ethics can be applied to om work both multiculturally and cross-culturally

Oscillatory behaviour in Type IA FBG: Ruling out chemical complexity

© 2015 SPIE. Type IA FBG are regenerated gratings that appear in hydrogenated germanosilicate fibre of all types during prolonged UV exposure. The gratings are characterised by a large Bragg wavelength shift and a concomitant increase in the mean fibre core index. Modulated index changes are complex by comparison and significantly weaker, often characterised by oscillatory growth behaviour. Low thermal stability of Type IA gratings suggests a possible chemical role similar to thermally processed optical fibres where autocatalysis has been observed. We show that GeOH and SiOH formation are not out-of-phase and follow each other, with no evidence of autocatalysis, ruling out a chemical origin

Hand-held optical fiber smartphone spectrometer for classification of vegetable oils

© OSA 2016. An optical-fiber-based low-cost, hand-held smartphone spectrometer is demonstrated for differentiating vegetable oils. The visible fluorescence spectrum of extra virgin olive oil is found to be significantly different from other oils, thus making forensic identification straightforward

Evidence of chemical complexity and laser-driven autocatalysis in type IA FBGs

© OSA 2016. We observe the first chemical complexity for Type IA FBG growth under prolonged UV laser exposure. Out-of-phase oscillatory behaviour in GeOH/SiOH formation provides evidence of laser-driven autocatalysis and chemical origins for grating formation

Temperature and strain characterization of regenerated gratings

Both temperature and strain characterization of seed and regenerated gratings with and without post annealing is reported. The high temperature regeneration has significant impact on thermal characterization and mechanical strength of gratings while the post annealing has little effect. The observed difference is evidence of viscoelastic changes in glass structure. © 2013 Optical Society of America

MinION sequencing of fungi in Sub-Saharan African air, and a novel LAMP assay for rapid detection of the tropical phytopathogenic genus Lasiodiplodia

To date, there have been no DNA-based metabarcoding studies into airborne fungi in tropical Sub-Saharan Africa. In this initial study, 10 air samples were collected onto Vaseline-coated acrylic rods mounted on drones flown at heights of 15-50 metres above ground for 10-15 minutes at three sites in Ghana. Purified DNA was extracted from air samples, the internal transcribed spacer (ITS) region was amplified using fungal-specific primers, and minION third-generation amplicon sequencing was undertaken with downstream bioinformatics analyses utilizing GAIA cloud-based software (at genus taxonomic level). Principal Co-Ordinate analyses based on Bray-Curtis beta diversity dissimilarity values found no clear evidence for structuring of fungal air communities based on geographic location (east vs. central Ghana), underlying vegetation type (cocoa vs. non-cocoa) or height above ground level (15-23 m vs. 25-50 m). In Ghanaian air samples, despite the very short flight times, ~90 operational taxonomic units (OTUs) were identified in each sample, with no statistical differences in alpha diversity between air samples from different locations, vegetation types or height above ground. In Ghanaian air, fungal assemblages were skewed at the phylum taxonomic level towards the ascomycetes (53.7%) as opposed to basidiomycetes (24.6%); at the class level, the Dothideomyectes were predominant (29.8%) followed by the Agaricomycetes (21.8%). The most common fungal genus in Ghanaian air was cosmopolitan and globally ubiquitous Cladosporium (9.9% of reads). Interestingly, many fungal genera containing economically important phytopathogens of tropical crops were also identified in Ghanaian air, including Corynespora, Fusarium and Lasiodiplodia. Consequently, a novel loop-mediated isothermal amplification (LAMP) assay, based on translation elongation factor-1α sequences, was developed and tested for rapid, sensitive and specific detection of the fungal phytopathogenic genus Lasiodiplodia. The potential applications for improved tropical disease management are considered

Nutrient criteria to achieve New Zealand’s riverine macroinvertebrate targets

Waterways worldwide are experiencing nutrient enrichment from population growth and intensive agriculture, and New Zealand is part of this global trend. Increasing fertilizer in New Zealand and intensive agriculture have driven substantial water quality declines over recent decades. A recent national directive has set environmental managers a range of riverine ecological targets, including three macroinvertebrate indicators, and requires nutrient criteria be set to support their achievement. To support these national aspirations, we use the minimization-of-mismatch analysis to derive potential nutrient criteria. Given that nutrient and macroinvertebrate monitoring often does not occur at the same sites, we compared nutrient criteria derived at sites where macroinvertebrates and nutrients are monitored concurrently with nutrient criteria derived at all macroinvertebrate monitoring sites and using modelled nutrients. To support all three macroinvertebrate targets, we suggest that suitable nutrient criteria would set median dissolved inorganic nitrogen concentrations at ~0.6 mg/L and median dissolved reactive phosphorus concentrations at ~0.02 mg/L. We recognize that deriving site-specific nutrient criteria requires the balancing of multiple values and consideration of multiple targets, and anticipate that criteria derived here will help and support these environmental goals