The construction of marketing measures: the case of viewability

This study seeks to develop a critical understanding of marketing measures. Marketing measures inform a variety of marketing practices and have been subject to ethical, discursive and epistemological critique. Informed by a range of theoretical work, this study sheds light on the construction of a key marketing measure in digital advertising: viewability. It shows how a range of competing interests can be mobilized and aligned; how an object of interest can be stabilized; and how standards for measurement can be reconciled. Across this account, we can see how issues of accuracy, ideology and ethics are bracketed off as participants agree on which things matter and which things count

History and Applications of Dust Devil Studies

Studies of dust devils, and their impact on society, are reviewed. Dust devils have been noted since antiquity, and have been documented in many countries, as well as on the planet Mars. As time-variable vortex entities, they have become a cultural motif. Three major stimuli of dust devil research are identified, nuclear testing, terrestrial climate studies, and perhaps most significantly, Mars research. Dust devils present an occasional safety hazard to light structures and have caused several deaths

Room temperature formation of rhodium nanoparticles on TiO₂ 110 via metalorganic chemical-vapour deposition (MOCVD) of [Rh(CO)₂Cl]₂

Room temperature adsorption of [Rh(CO)2Cl]2 on TiO2[110] is investigated using Scanning Tunnelling Microscopy (STM) which reveals the formation of nanoparticles that coexist with the mono-disperse Rh(CO)2Cl species; the spatial distribution of these particles indicates that nanoparticle formation occurs principally at step edges

Titania surface structures for directed growth of metal nanoparticles via metal vapour deposition and metal organic chemical vapour deposition

In this paper metal vapour deposition and metal organic chemical vapour deposition have been used to produce nanoscale metal particles on various TiO2(110) surfaces. The nanoparticles (Pd and Rh) are imaged directly by scanning tunnelling microscopy at ambient and elevated temperature in ultra high vacuum. The surface reconstruction of the TiO2 to a cross-linked (1 x 2) is used to form highly corrugated rectangular arrays that direct the growth of the Pd clusters. Thermal annealing at first induces a flattening and then a sintering of the nanoparticles. Ultimately the particles form a wide distribution of shapes and sizes. A crystal displaying crystallographic shear planes, composed of a self assembled array of alternating up-down step edges on the terrace, is used to direct the growth of Rh nanoparticles from [Rh(CO)(2)Cl](2). The particles are shown to grow mainly at the top edge of each step that runs at an angle to the principal directions of the surface

Re-thinking bookmark management – Less choice is more efficient

This research investigates the role of a Controlled Vocabulary (CV) in next generation bookmark management systems. The search for a more efficient graphical user interface solution to deal with the massive information overload situation faced by most computer users today is a pressing problem. CVs allow categorization of title words and phrases into the appropriate location recognized by the user, so as to facilitate easier information storage and retrieval. The results of this user study involving 152 individuals indicated that there is potential for a well-defined two-tier controlled vocabulary system to assist user categorization, information storage and retrieval in personal information management systems

Biocrusts mitigate the impact of aridity on soil microbial communities in drylands: evidence from observations across three continents.

Data from "M. Delgado-Baquerizo, F.T. Maestre, D.J. Eldridge, M.A. Bowker, T.C. Jeffries, B.K. Singh. Biocrusts mitigate the impact of aridity on soil microbial communities in drylands: evidence from observations across three continents.". The spreadsheet "Dataset" contains information on the microbial community composition, diversity and functions for two microsites across 39 locations from three continents. The spreadsheet "Metadata" contains the associated metadata, where a description of all the variables and units can be found