Cloaking and imaging at the same time

In this letter, we propose a conceptual device to perform subwavelength imaging with positive refraction. The key to this proposal is that a drain is no longer a must for some cases. What's more, this device is an isotropic omnidirectional cloak with a perfect electric conductor hiding region and shows versatile illusion optical effects. Numerical simulations are performed to verify the functionalities.Comment: 15 pages, 4 figure

What's Going on in Community Media

What's Going On in Community Media shines a spotlight on media practices that increase citizen participation in media production, governance, and policy. The report summarizes the findings of a nationwide scan of effective and emerging community media practices conducted by the Benton Foundation in collaboration with the Community Media and Technology Program of the University of Massachusetts, Boston. The scan includes an analysis of trends and emerging practices; comparative research; an online survey of community media practitioners; one-on-one interviews with practitioners, funders and policy makers; and the information gleaned from a series of roundtable discussions with community media practitioners in Boston, Chicago, Minneapolis/St. Paul, and Portland, Oregon

What's in an act? On security speech acts and little security nothings

This article makes a claim for re-engaging the concept of ‘act’ in the study of securitization. While much has been written about the discursive and communicative aspects of securitizing, the concept of ‘act’ that contains much of the politicality of the speech-act approach to security has been relatively ignored.The task of re-engaging ‘acts’ is particularly pertinent in the contemporary context, in which politically salient speech acts are heavily displaced by securitizing practices and devices that appear as banal, little security nothings. The main purpose of the article is to begin the framing of a research agenda that asks what political acts can be in diffuse security processes that efface securitizing speech acts

Whither the Language Lab?

Language Labs have experienced many changes over thepast several years, from changes in names to changes in direction.This edited transcription of a panel discussion at the1994 TESOL conference by six experienced language lab directorsprovides an informal and free-wheeling discussionabout the following questions: (1) What's in a name (change)?(2) What is the most appropriate role for technology with respectto language learning and teaching? (3) What is the roleof the language lab vis-a-vis faculty and adminis tration? (4)What are students' perceptions of language labs? (5) Whathas had the greatest impact on language labs over the last tento twenty years? (6) What are the fundamental characteristicsof the ideal lab director? (7) What is the greatest challengefacing the language lab today, as well as into the next decade?(8) Whither the language lab? What direction do we see ourselvesmoving in the next generation

Elearning Technologies

When blogging tools first arrived in 1998, people asked “What’s a blog?” The word “blog” is a contraction of “Web log” and is used both as a noun as well as a verb. To blog is to write content to a blog. By design, blogs are best suited for the spontaneous thoughts and observations of an individual or team. They are not designed to facilitate rapid-fire back-and-forth discussion on a particular issue. Blogging tools are available as free or moderately priced services and as products you purchase and install on your own server. You may have noticed recently that many of websites now contain little graphical buttons with the word XML on them. When you click on the button, all you see is some jumbled text and computer code [ed: unless you have a newer web browser or an aggregator]. What's this all about? It's an RSS feed, and it's changing the way people access the Internet.Weblog, RSS, e-learning, RSS, blogging tools

Cutting-edge jobs supported by old wood on Navajo Reservation

Hope for forests and communities at risk is spreading like wildfire in an isolated village south of Albuquerque. Ecologists say what's happening on the Alamo Navajo Reservation could well be a model for forest restoration across the West where there are too many trees and not enough jobs

Short Cuts and Long Shots: Raymond Carver's Stories and Robert Altman's Film

Asked by an interviewer about the starting-point for his stories, Raymond Carver once commented: I never start with an idea. I always see something. I start with an image, a cigarette being put out in a jar of mustard, for instance, or the remains, the wreckage of a dinner left on the table. Pop cans in the fireplace, that sort of thing. And a feeling goes with that. And that feeling seems to transport me back to that particular time and place, and the ambiance of the time. But it is the image, and the emotion that goes with that image – that's what's important. If Carver was interested in moving from the image into narrative, his stories have had a tendency to inspire their readers to translate them back into images. This was initially a critical tendency, as parallels were frequently drawn between Carver's stories and the paintings of Edward Hopper, and the paintings and sculptures of Photo Realists such as Duane Hanson, Richard Estes and Ralph Goings. But it was not only critics who looked to draw connections. In 1989, for example, Jo Ann Callis used a selection of Carver's poems to accompany her photographs in an exhibition catalogue, Objects of Reverie, while Bob Adelman has produced a book of photographs purporting to represent Carver Country

Automated metadata annotation: What is and is not possible with machine learning

Automated metadata annotation is only as good as training dataset, or rules that are available for the domain. It's important to learn what type of data content a pre-trained machine learning algorithm has been trained on to understand its limitations and potential biases. Consider what type of content is readily available to train an algorithm—what's popular and what's available. However, scholarly and historical content is often not available in consumable, homogenized, and interoperable formats at the large volume that is required for machine learning. There are exceptions such as science and medicine, where large, well documented collections are available. This paper presents the current state of automated metadata annotation in cultural heritage and research data, discusses challenges identified from use cases, and proposes solutions.Peer ReviewedPostprint (published version

What Next? The Quest to Protect Journalists and Human Rights Defenders in a Digital World

Around the world, governments and non-state actors are using sophisticated techniques to monitor, threaten, and harass human rights defenders (HRDs) and journalists. The growing use of digital technology has empowered activists to rally citizens around common causes and hold governments accountable, but it has also opened new doors for surveillance and harassment of activists and citizens' activities online. On November 14 -- 15, 2013, Freedom House, funded by the United States Agency for International Development (USAID), held a global conference in Mexico City entitled "What Next? The Quest to Protect Journalists and Human Rights Defenders in a Digital World," which brought together over 60 policymakers, donors, and activists to explore the full range of emerging threats and best strategies to overcome them; take an honest look at what is and is not working; and chart a path forward for more proactive and realistic solutions to build the resilience, sustainability, and relevance of HRDs and their movements. The conference sought to answer "what's next?" by identifying opportunities that can be exploited to build up frontline defenders and their ability to uphold human rights principles fearlessly and strategically at home and abroad