Drawing machines, bathing machines, motorbikes, the stars…: where are the masterpieces?

The term ‘digital drawing’ may imply a special kind of drawing, set against a natural approach. Previous generations also had to adjust to the new technologies of the time. Some resisted, some went ahead. New methods present difficulties as well as opportunities. The how-to-draw books of the 1900’s show not just one ‘traditional’ approach, but a wide range, and a healthy debate. For the past two centuries such books have here and there discussed both drawing machines, and the connected question of how to draw machines. One way or another the world of drawing will absorb the impact of computers, and it won’t be just as an isolated genre of slightly weird drawing. So it is wrong to exclude ‘digital’ drawing from surveys, to think of this category as distinct from mainstream drawing. Museums have already collected the significant works, and traced the history. The way forward should be to integrate digital tools within the broad spectrum of drawing types. There are no good reasons for not using digital devices, and no good reasons for not using pencils. All the same, I cite three cases where a pencil and paper technique would not be up to the job: football, a drawing jam session, and astronomy

A drawing book for digital eyes

Looking at book covers may not tell you everything, but they do tell you something. A collection of leather-bound ‘how to draw’ books of the nineteen twenties exudes confidence, the expertise of the masters handed down. The titles indicate attention to technique, referring to ‘pencil drawing’, ‘lead pencil drawing’, or ‘pen and ink’, and speak of the ‘art’ of drawing. Some of these had been in print for fifty years. There are idealised classical figures, nature studies, but also stirrings of a more liberal approach. By the nineteen forties and fifties the books are less formal, less symmetrical, and more Do-It-Yourself: ‘I wish I could draw’, ‘Drawing at Home’, ’The Natural Way to Draw’, ‘Drawing Without a Master’. Some are slim volumes running in series devoted to subjects such as ships, cats, trees, even tanks. You draw the world around you

Forecasting Aggregate Period Specific Birth Rates: The Time Series Properties of a Microdynamic Neoclassical Model of Fertility

This article demonstrates the value of microdata for understanding the effect of wages on life cycle fertility dynamics. Conventional estimates of neoclassical economic fertility models obtained from linear aggregate time series regressions are widely criticized for being nonrobust when adjusted for serial correlation. Moreover, the forecasting power of these aggregative neoclassical models has been shown to be inferior when compared with conventional time series models that assign no role to wages. This article demonstrates, that when neoclassical models of fertility are estimated on microdata using methods that incorporate key demographic restrictions and when they are properly aggregated, they have considerable forecasting power.

Retailing under resale price maintenance: economies of scale and scope, and firm strategic response, in the inter-war British retail pharmacy sector

The article examines the impact of resale price maintenance (RPM) on market structure, productivity, and competitive advantage in British retail pharmacy. In contrast to influential studies, but consistent with contemporary and recent work, it is shown that the major multiples were able to ameliorate the negative growth impacts of RPM. Higher profit margins ‒ principally from larger manufacturer discounts and backward integration – were used to fund initiatives aimed at boosting aggregate sales and economies of scale and scope. These relationships are explored using a recently discovered national establishment-level survey of retail pharmacists’ costs and margins, together with internal data for Boots Ltd

Sales and Advertising Rivalry in Interwar US Department Stores

Department stores represented one of the most advertising-intensive sectors of American inter-war retailing. Yet it has been argued that a competitive spiral of high advertising spending, to match the challenge of other local department stores, contributed to a damaging inflation of costs that eroded long-term competitiveness. We test these claims, using both qualitative archival data and establishment-level national data sets. Returns to stores’ advertising are shown to have fallen over the period, while own advertising led to retaliatory advertising by rival department stores, which substantially lowered returns on advertising dollars in the 1930s (but not the 1920s).Department stores, Interwar U.S. economic history, Advertising, Marketing

Degassing

Measurements of the concentration of rare gases and trace elements in oceanic basalts provided a new information concerning the structure if the Earth mantle and its evolution. The results set important constraints that need to be incorporated into any comprehensive understanding of the early history of the planets. Some of the highlights of these results are described and an indication is given how they are derived

Advertising, promotion, and the competitive advantage of interwar UK department stores

Promotional activity proved key to the success of department stores in fending off competition from the expanding chain stores by drawing in customers to their large, central, premises. This paper uses a combination of quantitative and qualitative archival data to examine the promotional methods of interwar British department stores, variations in the promotional mix between types of store, and returns to promotional activities. A number of distinct regional promotional strategies are identified, shaped by variations in the types of consumer markets served. Meanwhile there was considerable policy convergence among stores towards using promotional activity primarily as a means of imprinting a strong institutionalrand image in the minds of the consuming public.advertising, promotion, mail order, retailing, department stores

How life affects the geochemical cycle of carbon

Developing a quantitative understanding of the biogeochemical cycles of carbon as they have worked throughout Earth history on various time scales, how they have been affected by biological evolution, and how changes in the carbon content of ocean and atmosphere may have affected climate and the evolution of life are the goals of the research. Theoretical simulations were developed that can be tuned to reproduce such data as exist and, once tuned, can be used to predict properties that have not yet been observed. This is an ongoing process, in which models and results are refined as new data and interpretations become available and as understanding of the global system improves. Results of the research are described in several papers which were published or submitted for publication. These papers are summarized. Future research plans are presented

Cnemidophorus laredoensis

Number of Pages: 5Integrative BiologyGeological Science

Spatio-Temporal Techniques for User Identification by means of GPS Mobility Data

One of the greatest concerns related to the popularity of GPS-enabled devices and applications is the increasing availability of the personal location information generated by them and shared with application and service providers. Moreover, people tend to have regular routines and be characterized by a set of "significant places", thus making it possible to identify a user from his/her mobility data. In this paper we present a series of techniques for identifying individuals from their GPS movements. More specifically, we study the uniqueness of GPS information for three popular datasets, and we provide a detailed analysis of the discriminatory power of speed, direction and distance of travel. Most importantly, we present a simple yet effective technique for the identification of users from location information that are not included in the original dataset used for training, thus raising important privacy concerns for the management of location datasets.Comment: 11 pages, 8 figure