Journal articles on the topic 'Hyperbolic rollers'

This paper derives the generalized surface equation for cylindrical, conical, and hyperbolic meshing turret-rollers. Based on the generalized equation of meshing turret-rollers, generalized mathematical expressions of surface geometry for globoidal cams with cylindrical, conical, and hyperbolic meshing turret-rollers are derived using theory of conjugate surfaces, differential geometry, and coordinate transformation. A design example is presented for demonstrating procedures of surface generating of the globoidal cam. The result of this work is necessary for the computer-aided design and manufacturing of roller gear cams for industrial applications.

Presented here are two results concerning the interaction between vorticity and strain. Both are obtained experimentally by investigating the hyperbolic flow created in Taylor's four-roll mill. It is first shown that this pure straining flow becomes intrinsically unstable through a supercritical bifurcation to form an array of counter-rotating vortices aligned in the stretching direction. The dimensionless parameter characterizing the flow is the internal Reynolds number Re = γΔ2/v based on the velocity gradient γ and on the gap between the rollers Δ, and the threshold value is Rec = 17. Near the threshold, the transverse velocity profiles of these vortices are in excellent agreement with those predicted by the theory of Kerr & Dold (1994) in the case of an infinite hyperbolic flow. A second result is obtained at high Reynolds number. Measurements of the velocity profile in the direction parallel to the vortices show that the velocity gradient (the stretching) is systematically weaker inside the vortices than elsewhere. This demonstrates experimentally the existence of a negative feedback of rotation on stretching. This effect is ascribed to the two-dimensionalization due to the vortex fast rotation. An implication of these results for turbulent flows is a nonlinear limitation of the vorticity stretching, an effect characterized recently by Ohkitani 1998.

We are interested in the modelling of multi-dimensional turbulent hydraulic jumps in convergent radial flow. To describe the formation of intensive eddies (rollers) at the front of the hydraulic jump, a new model of shear shallow water flows is used. The governing equations form a non-conservative hyperbolic system with dissipative source terms. The structure of equations is reminiscent of generic Reynolds-averaged Euler equations for barotropic compressible turbulent flows. Two types of dissipative term are studied. The first one corresponds to a Chézy-like dissipation rate, and the second one to a standard energy dissipation rate commonly used in compressible turbulence. Both of them guarantee the positive definiteness of the Reynolds stress tensor. The equations are rewritten in polar coordinates and numerically solved by using an original splitting procedure. Numerical results for both types of dissipation are presented and qualitatively compared with the experimental works. The results show both experimentally observed phenomena (cusp formation at the front of the hydraulic jump) as well as new flow patterns (the shape of the hydraulic jump becomes a rotating square).

AbstractA conservative hyperbolic two-parameter model of shear shallow-water flows is used to study the classical turbulent hydraulic jump. The parameters of the model, which are the wall enstrophy and the roller dissipation coefficient, are determined from measurements of the roller length and the deviation from the Bélanger equation of the sequent depth ratio (experimental data by Hager & Bremen, J. Hydraul. Res., vol. 27, 1989, pp. 565–585; and Hager, Bremen & Kawagoshi, J. Hydraul. Res., vol. 28, 1990, pp. 591–608). Stationary solutions to the model describe with a good accuracy the free-surface profile of the hydraulic jump. The model is also capable of predicting the oscillations of the jump toe. We show that if the upstream Froude number is larger than ${\sim }1. 5$, the jump toe oscillates with a particular frequency, while for the Froude number smaller than 1.5 the solution becomes stationary. In particular, we show that for a given flow discharge, the oscillation frequency is a decreasing function of the Froude number.

This work present the study of the sintering of polycrystalline diamond compact with hyperbolic truncated cone profile using hexagonal boron nitride assembly, rather than salt mold, which is different from conventional assembly and this kind of polycrystalline diamond compact is widely used in percussion rock bits and roller cone rock bits. The well-sintered polycrystalline diamond compact without transition layer is prepared on a WC-10wt% Co substrate at temperature 1450°C for 3 min at non-hydrostatic high pressure of 5.5Gpa.Different analyzing techniques, such as X- ray diffraction, micro-Raman spectroscopy, scanning electron microscopy were applied to characterize the micro-structure, residual stress and sintering behavior. The SEM analysis indicates that diamond-diamond (D-D) direct bonding had formed in the polycrystalline diamond layer. The Raman spectroscopy shows compressive stress in the polycrystalline diamond layer is much higher than that sintered using traditional assembly.

Due to the complex motion control in flexible roll forming when processing the sheet metal with variable cross-section, it is required for high real-time and high precision control during the processing. Controlling servo motor by adopting the configuration programming is a common approach to achieve roller motion, but it will not be able or difficult to realize by the configuration programming for complex contour sheet metal without the rules such as hyperbolic, or the molding product in non-symmetric cross-section shape, etc. Based on the process characteristic of flexible roll forming and its motion control technology, this paper adopts the variable time-domain discrete interpolation control method to process the variable cross-section sheet metal. Experiments indicate that this control method provides a good operating method for the sheet metal forming with complex variable cross-section shape in flexible roll forming.

The equipment scheduling and propagation characteristics of vibration wave from vibratory roller ⟶ filling material nonlinear systems with multistability are the core problems of subgrade intelligent construction technology, and the logistics scheduling of the equipment is directly related to the construction efficiency. Aiming at the shortages, one typical subgrade located at the Gu’an station of Beijing-Xiong’an city railway is selected to research and finish the field tests; some findings are shown as follows: first, some valuable suggestions about the logistics scheduling of intelligent equipment are proposed, which can break the barriers between the organizations and improve construction efficiency; second, when the vibration wave propagates from the vibratory roller ⟶ surface of filling material ⟶ different buried depths of filling material, the peak acceleration of vibration wave gradually decreases and is hyperbolic distribution approximately. At the same time, the sensitive of attenuation is shown as follows: Z<X ≈ Y, and the critical depth of vibration energy propagation is about 1.0 m. At the same time, the peak acceleration of vibration wave at the interface of different filling material layers exists in steps and is “side clock” distribution approximately with the increase in buried depth. Third, in the propagation process, with the increase in buried depth, the amplitude of fundamental, primary, secondary, until fifth harmonics decreases exponentially (R2>0.9), and the concrete functional relationship among different amplitudes of harmonics can be summarized as y = Ae−BX; fourth, the vibration energy is mainly concentrated near 10–30 Hz in the vibratory roller, but when the vibration wave propagates from vibratory roller⟶filling material, the vibration energy gradually decreases with the increase in depth, and the marginal spectrum gradually changes from one peak to two peaks, that is, 30–50 Hz and 50–100 Hz; fifth, the vibration energy in the vibrational wheel is distributed averagely in the compaction process, and the effective compaction time is two seconds, which will be helpful for revealing the propagation characteristics of vibration wave, optimizing the compaction quality control models and providing some support for the development of intelligent compaction theory of railway subgrade.

AbstractWe derive a mathematical model of shear flows of shallow water down an inclined plane. The non-dissipative part of the model is obtained by averaging the incompressible Euler equations over the fluid depth. The averaged equations are simplified in the case of weakly sheared flows. They are reminiscent of the compressible non-isentropic Euler equations where the flow enstrophy plays the role of entropy. Two types of enstrophies are distinguished: a small-scale enstrophy generated near the wall, and a large-scale enstrophy corresponding to the flow in the roller region near the free surface. The dissipation is then added in accordance with basic physical principles. The model is hyperbolic, the corresponding ‘sound velocity’ depends on the flow enstrophies. Periodic stationary solutions to this model describing roll waves were obtained. The solutions are in good agreement with the experimental profiles of roll waves measured in Brock’s experiments. In particular, the height of the vertical front of the waves, the shock thickness and the wave amplitude are well captured by the model.

The results of physical simulation of hot compression of semi-finished products, selected from a cast ingot and hot-rolled plate from aluminum-lithium alloy V-1461, in the temperature range of 400-460°C and strain rates of 1-60 s-1are presented. It is established that at a constant strain rate the flow stresses decrease with increasing test temperature, an increase in the strain rate leads to an increase in flow stresses at a constant temperature. The parameters of the hot deformation rheological model, including the Zener-Hollomon parameter and the hyperbolic sine law, are determined. It is established that the parameters of the rheological model for the cast and hot-rolled state differ insignificantly.

A large reduction rolling process was used to obtain complete dynamic recrystallization (DRX) microstructures with fine recrystallization grains. Based on the hyperbolic sinusoidal equation that included an Arrhenius term, a constitutive model of flow stress was established for the unidirectional solidification sheet of AZ31 magnesium alloy. Furthermore, discretized by the cellular automata (CA) method, a real-time nucleation equation coupled flow stress was developed for the numerical simulation of the microstructural evolution during DRX. The stress and strain results of finite element analysis were inducted to CA simulation to bridge the macroscopic rolling process analysis with the microscopic DRX activities. Considering that the nucleation of recrystallization may occur at the grain and R-grain boundary, the DRX processes under different deformation conditions were simulated. The evolution of microstructure, percentages of DRX, and sizes of recrystallization grains were discussed in detail. Results of DRX simulation were compared with those from electron backscatter diffraction analysis, and the simulated microstructure was in good agreement with the actual pattern obtained using experiment analysis. The simulation technique provides a flexible way for predicting the morphological variations of DRX microstructure accompanied with plastic deformation on a hot-rolled sheet.

The development of a new rolling bearing with cylindrical rollers and roller raceways in the form of the surface of a single-cavity hyperboloid is generalized. The bearing, designed for significant radial axial loads, is designed for roll supports of sheet-rolling stands. Keywords: rolling bearing, roller, raceway, single-cavity hyperboloid, bearing, rolling surface, rolling stand, cylindrical roller. irishka2910@yandex.ru

The shear modulus of orthotropic thin sheets from three advanced high-strength steels (AHSS) is measured using the anticlastic-plate-bending (APB) experiment. In APB, a thin square plate is loaded by point forces at its four corners, paired in opposite directions. It thus assumes the shape of a hyperbolic paraboloid, at least initially. The principal stress directions coincide with the plate diagonals, and the principal stresses are equal and opposite. Hence, at 45 deg to these, a state of pure shear exists. A finite element (FE) study of APB is reported first, using both elastic and elastoplastic material models. This study confirms the theoretical predictions of the stress field that develops in APB. The numerical model is then treated as a virtual experiment. The input shear modulus is recovered through this procedure, thus validating this approach. A major conclusion from this numerical study is that the shear modulus for these three AHSS should be determined before the shear strain exceeds 2 × 10−4 (or 200 με). Subsequently, APB experiments are performed on the three AHSS (DP 980, DP 1180 and MS 1700). The responses recorded in these experiments confirm that over 3 × 10−4 strain (or 300 με) the response differs from the theoretically expected one, due to excessive deflections, yielding, changing contact conditions with the loading rollers and, in general, the breaking of symmetry. But under that limit, the responses recorded are linear, and can be used to determine the shear modulus.

The optimal parameters and operating modes of vibratory roller for soil compaction after sowing winter wheat were substantiated. For objective function - the optimum coefficient of variation of density of soil during operation of vibratory roller for compacting winter wheat regression equation was obtained in the planning according to the Вк plan of the experiment. The adequacy of model according to Fisher criterion, the significance and reliability of coefficients of regression equation was established. The response surface obtained by the shape of hyperboloid rotation was studied, twodimensional sections of three factors were constructed on optimization criterion. With its minimum value, the optimal parameters of vibratory roller were established: the mass of roller is 293 kg, the spring stiffness is 11.95 kN/m, the working speed of roller is 9.6 km/h. The minimum value of optimization criterion is 10.43%.

At one point in Victor Hugo’s novel, The Hunchback of Notre Dame, the archdeacon, Claude Frollo, looked up from a book on his table to the edifice of the gothic cathedral, visible from his canon’s cell in the cloister of Notre Dame: “Alas!” he said, “this will kill that” (146). Frollo’s lament, that the book would destroy the edifice, captures the medieval cleric’s anxiety about the way in which Gutenberg’s print technology would become the new universal means for recording and communicating humanity’s ideas and artistic expression, replacing the grand monuments of architecture, human engineering, and craftsmanship. For Hugo, architecture was “the great handwriting of humankind” (149). The cathedral as the material outcome of human technology was being replaced by the first great machine—the printing press. At this point in the third millennium, some people undoubtedly have similar anxieties to Frollo: is it now the book’s turn to be destroyed by yet another great machine? The inclusion of “post print” in our title is not intended to sound the death knell of the book. Rather, we contend that despite the enduring value of print, digital publishing is “present and active” and is changing the way in which research, particularly in the humanities, is being undertaken. Our approach has three related parts. First, we consider how digital technologies are changing the way in which content is constructed, customised, modified, disseminated, and accessed within a global, distributed network. This section argues that the transition from print to electronic or digital publishing means both losses and gains, particularly with respect to shifts in our approaches to textuality, information, and innovative publishing. Second, we discuss the Children’s Literature Digital Resources (CLDR) project, with which we are involved. This case study of a digitising initiative opens out the transformative possibilities and challenges of digital publishing and e-scholarship for research communities. Third, we reflect on technology’s capacity to bring about major changes in the light of the theoretical and practical issues that have arisen from our discussion. I. Digitising in a “post-print age” We are living in an era that is commonly referred to as “the late age of print” (see Kho) or the “post-print age” (see Gunkel). According to Aarseth, we have reached a point whereby nearly all of our public and personal media have become more or less digital (37). As Kho notes, web newspapers are not only becoming increasingly more popular, but they are also making rather than losing money, and paper-based newspapers are finding it difficult to recruit new readers from the younger generations (37). Not only can such online-only publications update format, content, and structure more economically than print-based publications, but their wide distribution network, speed, and flexibility attract advertising revenue. Hype and hyperbole aside, publishers are not so much discarding their legacy of print, but recognising the folly of not embracing innovative technologies that can add value by presenting information in ways that satisfy users’ needs for content to-go or for edutainment. As Kho notes: “no longer able to satisfy customer demand by producing print-only products, or even by enabling online access to semi-static content, established publishers are embracing new models for publishing, web-style” (42). Advocates of online publishing contend that the major benefits of online publishing over print technology are that it is faster, more economical, and more interactive. However, as Hovav and Gray caution, “e-publishing also involves risks, hidden costs, and trade-offs” (79). The specific focus for these authors is e-journal publishing and they contend that while cost reduction is in editing, production and distribution, if the journal is not open access, then costs relating to storage and bandwith will be transferred to the user. If we put economics aside for the moment, the transition from print to electronic text (e-text), especially with electronic literary works, brings additional considerations, particularly in their ability to make available different reading strategies to print, such as “animation, rollovers, screen design, navigation strategies, and so on” (Hayles 38). Transition from print to e-text In his book, Writing Space, David Bolter follows Victor Hugo’s lead, but does not ask if print technology will be destroyed. Rather, he argues that “the idea and ideal of the book will change: print will no longer define the organization and presentation of knowledge, as it has for the past five centuries” (2). As Hayles noted above, one significant indicator of this change, which is a consequence of the shift from analogue to digital, is the addition of graphical, audio, visual, sonic, and kinetic elements to the written word. A significant consequence of this transition is the reinvention of the book in a networked environment. Unlike the printed book, the networked book is not bound by space and time. Rather, it is an evolving entity within an ecology of readers, authors, and texts. The Web 2.0 platform has enabled more experimentation with blending of digital technology and traditional writing, particularly in the use of blogs, which have spawned blogwriting and the wikinovel. Siva Vaidhyanathan’s The Googlization of Everything: How One Company is Disrupting Culture, Commerce and Community … and Why We Should Worry is a wikinovel or blog book that was produced over a series of weeks with contributions from other bloggers (see: http://www.sivacracy.net/). Penguin Books, in collaboration with a media company, “Six Stories to Start,” have developed six stories—“We Tell Stories,” which involve different forms of interactivity from users through blog entries, Twitter text messages, an interactive google map, and other features. For example, the story titled “Fairy Tales” allows users to customise the story using their own choice of names for characters and descriptions of character traits. Each story is loosely based on a classic story and links take users to synopses of these original stories and their authors and to online purchase of the texts through the Penguin Books sales website. These examples of digital stories are a small part of the digital environment, which exploits computer and online technologies’ capacity to be interactive and immersive. As Janet Murray notes, the interactive qualities of digital environments are characterised by their procedural and participatory abilities, while their immersive qualities are characterised by their spatial and encyclopedic dimensions (71–89). These immersive and interactive qualities highlight different ways of reading texts, which entail different embodied and cognitive functions from those that reading print texts requires. As Hayles argues: the advent of electronic textuality presents us with an unparalleled opportunity to reformulate fundamental ideas about texts and, in the process, to see print as well as electronic texts with fresh eyes (89–90). The transition to e-text also highlights how digitality is changing all aspects of everyday life both inside and outside the academy. Online teaching and e-research Another aspect of the commercial arm of publishing that is impacting on academe and other organisations is the digitising and indexing of print content for niche distribution. Kho offers the example of the Mark Logic Corporation, which uses its XML content platform to repurpose content, create new content, and distribute this content through multiple portals. As the promotional website video for Mark Logic explains, academics can use this service to customise their own textbooks for students by including only articles and book chapters that are relevant to their subject. These are then organised, bound, and distributed by Mark Logic for sale to students at a cost that is generally cheaper than most textbooks. A further example of how print and digital materials can form an integrated, customised source for teachers and students is eFictions (Trimmer, Jennings, & Patterson). eFictions was one of the first print and online short story anthologies that teachers of literature could customise to their own needs. Produced as both a print text collection and a website, eFictions offers popular short stories in English by well-known traditional and contemporary writers from the US, Australia, New Zealand, UK, and Europe, with summaries, notes on literary features, author biographies, and, in one instance, a YouTube movie of the story. In using the eFictions website, teachers can build a customised anthology of traditional and innovative stories to suit their teaching preferences. These examples provide useful indicators of how content is constructed, customised, modified, disseminated, and accessed within a distributed network. However, the question remains as to how to measure their impact and outcomes within teaching and learning communities. As Harley suggests in her study on the use and users of digital resources in the humanities and social sciences, several factors warrant attention, such as personal teaching style, philosophy, and specific disciplinary requirements. However, in terms of understanding the benefits of digital resources for teaching and learning, Harley notes that few providers in her sample had developed any plans to evaluate use and users in a systematic way. In addition to the problems raised in Harley’s study, another relates to how researchers can be supported to take full advantage of digital technologies for e-research. The transformation brought about by information and communication technologies extends and broadens the impact of research, by making its outputs more discoverable and usable by other researchers, and its benefits more available to industry, governments, and the wider community. Traditional repositories of knowledge and information, such as libraries, are juggling the space demands of books and computer hardware alongside increasing reader demand for anywhere, anytime, anyplace access to information. Researchers’ expectations about online access to journals, eprints, bibliographic data, and the views of others through wikis, blogs, and associated social and information networking sites such as YouTube compete with the traditional expectations of the institutions that fund libraries for paper-based archives and book repositories. While university libraries are finding it increasingly difficult to purchase all hardcover books relevant to numerous and varied disciplines, a significant proportion of their budgets goes towards digital repositories (e.g., STORS), indexes, and other resources, such as full-text electronic specialised and multidisciplinary journal databases (e.g., Project Muse and Proquest); electronic serials; e-books; and specialised information sources through fast (online) document delivery services. An area that is becoming increasingly significant for those working in the humanities is the digitising of historical and cultural texts. II. Bringing back the dead: The CLDR project The CLDR project is led by researchers and librarians at the Queensland University of Technology, in collaboration with Deakin University, University of Sydney, and members of the AustLit team at The University of Queensland. The CLDR project is a “Research Community” of the electronic bibliographic database AustLit: The Australian Literature Resource, which is working towards the goal of providing a complete bibliographic record of the nation’s literature. AustLit offers users with a single entry point to enhanced scholarly resources on Australian writers, their works, and other aspects of Australian literary culture and activities. AustLit and its Research Communities are supported by grants from the Australian Research Council and financial and in-kind contributions from a consortium of Australian universities, and by other external funding sources such as the National Collaborative Research Infrastructure Strategy. Like other more extensive digitisation projects, such as Project Gutenberg and the Rosetta Project, the CLDR project aims to provide a centralised access point for digital surrogates of early published works of Australian children’s literature, with access pathways to existing resources. The first stage of the CLDR project is to provide access to digitised, full-text, out-of-copyright Australian children’s literature from European settlement to 1945, with selected digitised critical works relevant to the field. Texts comprise a range of genres, including poetry, drama, and narrative for young readers and picture books, songs, and rhymes for infants. Currently, a selection of 75 e-texts and digital scans of original texts from Project Gutenberg and Internet Archive have been linked to the Children’s Literature Research Community. By the end of 2009, the CLDR will have digitised approximately 1000 literary texts and a significant number of critical works. Stage II and subsequent development will involve digitisation of selected texts from 1945 onwards. A precursor to the CLDR project has been undertaken by Deakin University in collaboration with the State Library of Victoria, whereby a digital bibliographic index comprising Victorian School Readers has been completed with plans for full-text digital surrogates of a selection of these texts. These texts provide valuable insights into citizenship, identity, and values formation from the 1930s onwards. At the time of writing, the CLDR is at an early stage of development. An extensive survey of out-of-copyright texts has been completed and the digitisation of these resources is about to commence. The project plans to make rich content searchable, allowing scholars from children’s literature studies and education to benefit from the many advantages of online scholarship. What digital publishing and associated digital archives, electronic texts, hypermedia, and so forth foreground is the fact that writers, readers, publishers, programmers, designers, critics, booksellers, teachers, and copyright laws operate within a context that is highly mediated by technology. In his article on large-scale digitisation projects carried out by Cornell and University of Michigan with the Making of America collection of 19th-century American serials and monographs, Hirtle notes that when special collections’ materials are available via the Web, with appropriate metadata and software, then they can “increase use of the material, contribute to new forms of research, and attract new users to the material” (44). Furthermore, Hirtle contends that despite the poor ergonomics associated with most electronic displays and e-book readers, “people will, when given the opportunity, consult an electronic text over the print original” (46). If this preference is universally accurate, especially for researchers and students, then it follows that not only will the preference for electronic surrogates of original material increase, but preference for other kinds of electronic texts will also increase. It is with this preference for electronic resources in mind that we approached the field of children’s literature in Australia and asked questions about how future generations of researchers would prefer to work. If electronic texts become the reference of choice for primary as well as secondary sources, then it seems sensible to assume that researchers would prefer to sit at the end of the keyboard than to travel considerable distances at considerable cost to access paper-based print texts in distant libraries and archives. We considered the best means for providing access to digitised primary and secondary, full text material, and digital pathways to existing online resources, particularly an extensive indexing and bibliographic database. Prior to the commencement of the CLDR project, AustLit had already indexed an extensive number of children’s literature. Challenges and dilemmas The CLDR project, even in its early stages of development, has encountered a number of challenges and dilemmas that centre on access, copyright, economic capital, and practical aspects of digitisation, and sustainability. These issues have relevance for digital publishing and e-research. A decision is yet to be made as to whether the digital texts in CLDR will be available on open or closed/tolled access. The preference is for open access. As Hayles argues, copyright is more than a legal basis for intellectual property, as it also entails ideas about authorship, creativity, and the work as an “immaterial mental construct” that goes “beyond the paper, binding, or ink” (144). Seeking copyright permission is therefore only part of the issue. Determining how the item will be accessed is a further matter, particularly as future technologies may impact upon how a digital item is used. In the case of e-journals, the issue of copyright payment structures are evolving towards a collective licensing system, pay-per-view, and other combinations of print and electronic subscription (see Hovav and Gray). For research purposes, digitisation of items for CLDR is not simply a scan and deliver process. Rather it is one that needs to ensure that the best quality is provided and that the item is both accessible and usable by researchers, and sustainable for future researchers. Sustainability is an important consideration and provides a challenge for institutions that host projects such as CLDR. Therefore, items need to be scanned to a high quality and this requires an expensive scanner and personnel costs. Files need to be in a variety of formats for preservation purposes and so that they may be manipulated to be useable in different technologies (for example, Archival Tiff, Tiff, Jpeg, PDF, HTML). Hovav and Gray warn that when technology becomes obsolete, then content becomes unreadable unless backward integration is maintained. The CLDR items will be annotatable given AustLit’s NeAt funded project: Aus-e-Lit. The Aus-e-Lit project will extend and enhance the existing AustLit web portal with data integration and search services, empirical reporting services, collaborative annotation services, and compound object authoring, editing, and publishing services. For users to be able to get the most out of a digital item, it needs to be searchable, either through double keying or OCR (optimal character recognition). The value of CLDR’s contribution The value of the CLDR project lies in its goal to provide a comprehensive, searchable body of texts (fictional and critical) to researchers across the humanities and social sciences. Other projects seem to be intent on putting up as many items as possible to be considered as a first resort for online texts. CLDR is more specific and is not interested in simply generating a presence on the Web. Rather, it is research driven both in its design and implementation, and in its focussed outcomes of assisting academics and students primarily in their e-research endeavours. To this end, we have concentrated on the following: an extensive survey of appropriate texts; best models for file location, distribution, and use; and high standards of digitising protocols. These issues that relate to data storage, digitisation, collections, management, and end-users of data are aligned with the “Development of an Australian Research Data Strategy” outlined in An Australian e-Research Strategy and Implementation Framework (2006). CLDR is not designed to simply replicate resources, as it has a distinct focus, audience, and research potential. In addition, it looks at resources that may be forgotten or are no longer available in reproduction by current publishing companies. Thus, the aim of CLDR is to preserve both the time and a period of Australian history and literary culture. It will also provide users with an accessible repository of rare and early texts written for children. III. Future directions It is now commonplace to recognize that the Web’s role as information provider has changed over the past decade. New forms of “collective intelligence” or “distributed cognition” (Oblinger and Lombardi) are emerging within and outside formal research communities. Technology’s capacity to initiate major cultural, social, educational, economic, political and commercial shifts has conditioned us to expect the “next big thing.” We have learnt to adapt swiftly to the many challenges that online technologies have presented, and we have reaped the benefits. As the examples in this discussion have highlighted, the changes in online publishing and digitisation have provided many material, network, pedagogical, and research possibilities: we teach online units providing students with access to e-journals, e-books, and customized archives of digitised materials; we communicate via various online technologies; we attend virtual conferences; and we participate in e-research through a global, digital network. In other words, technology is deeply engrained in our everyday lives. In returning to Frollo’s concern that the book would destroy architecture, Umberto Eco offers a placatory note: “in the history of culture it has never happened that something has simply killed something else. Something has profoundly changed something else” (n. pag.). Eco’s point has relevance to our discussion of digital publishing. The transition from print to digital necessitates a profound change that impacts on the ways we read, write, and research. As we have illustrated with our case study of the CLDR project, the move to creating digitised texts of print literature needs to be considered within a dynamic network of multiple causalities, emergent technological processes, and complex negotiations through which digital texts are created, stored, disseminated, and used. Technological changes in just the past five years have, in many ways, created an expectation in the minds of people that the future is no longer some distant time from the present. Rather, as our title suggests, the future is both present and active. References Aarseth, Espen. “How we became Postdigital: From Cyberstudies to Game Studies.” Critical Cyber-culture Studies. Ed. David Silver and Adrienne Massanari. New York: New York UP, 2006. 37–46. An Australian e-Research Strategy and Implementation Framework: Final Report of the e-Research Coordinating Committee. Commonwealth of Australia, 2006. Bolter, Jay David. Writing Space: The Computer, Hypertext, and the History of Writing. Hillsdale, NJ: Erlbaum, 1991. Eco, Umberto. “The Future of the Book.” 1994. 3 June 2008 ‹http://www.themodernword.com/eco/eco_future_of_book.html>. Gunkel, David. J. “What's the Matter with Books?” Configurations 11.3 (2003): 277–303. Harley, Diane. “Use and Users of Digital Resources: A Focus on Undergraduate Education in the Humanities and Social Sciences.” Research and Occasional Papers Series. Berkeley: University of California. Centre for Studies in Higher Education. 12 June 2008 ‹http://www.themodernword.com/eco/eco_future_of_book.html>. Hayles, N. Katherine. My Mother was a Computer: Digital Subjects and Literary Texts. Chicago: U of Chicago P, 2005. Hirtle, Peter B. “The Impact of Digitization on Special Collections in Libraries.” Libraries & Culture 37.1 (2002): 42–52. Hovav, Anat and Paul Gray. “Managing Academic E-journals.” Communications of the ACM 47.4 (2004): 79–82. Hugo, Victor. The Hunchback of Notre Dame (Notre-Dame de Paris). Ware, Hertfordshire: Wordsworth editions, 1993. Kho, Nancy D. “The Medium Gets the Message: Post-Print Publishing Models.” EContent 30.6 (2007): 42–48. Oblinger, Diana and Marilyn Lombardi. “Common Knowledge: Openness in Higher Education.” Opening up Education: The Collective Advancement of Education Through Open Technology, Open Content and Open Knowledge. Ed. Toru Liyoshi and M. S. Vijay Kumar. Cambridge, MA: MIT Press, 2007. 389–400. Murray, Janet H. Hamlet on the Holodeck: The Future of Narrative in Cyberspace. Cambridge, MA: MIT Press, 2001. Trimmer, Joseph F., Wade Jennings, and Annette Patterson. eFictions. New York: Harcourt, 2001.