WorldWideScience

Sample records for art galleries

  1. ART GALLERY IN LHASA

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Art galleries have emerged on the streets of Lhasa since the reform and opening up of China.The earliest ones were Art Gallery of Tibetan Exhibition Hall and Art Gallery of Potala Palace 20 years before.For 20 years as one fell,another rose until now,tens of art galleries of various sizes and centred around the Barkor Street are attracting enormous numbers of tourists from both home and abroad.

  2. Walking, Talking Art Gallery.

    Science.gov (United States)

    Piazza, Sheila

    2002-01-01

    Discusses a project that aimed at educating the public about art by bringing art to the people. Explains that students selected their favorite artwork and made a t-shirt displaying their artwork. States that the students went into their community and also created a mural. (CMK)

  3. A Note on Edge Guards in Art Galleries

    CERN Document Server

    Nandakumar, R

    2011-01-01

    We examine the Art Gallery Problem with Edge Guards. We present a heuristic algorithm to arrange edge guards to guard only the inward side of the walls of any N-vertex simple polygonal gallery using at most roof (N/4) edge guards - a weakened version of Toussaint's conjecture on the number of edge guards that can guard an entire simple polygon

  4. Indoor/outdoor ozone concentrations at a contemporary art gallery

    Energy Technology Data Exchange (ETDEWEB)

    Davies, T.D.; Ramer, B.; Kaspyzok, G.; Delany, A.C.

    1984-02-01

    Ozone concentrations were measured both inside and outside the Sainsbury Centre for Visual Arts, near a small city in rural eastern England, during a three-week period in summer. The inside concentration was typically 70 +/- 10% of the outside concentration during the period of expected maximum outside levels. During the period of observation the maximum outside ozone levels have been well in excess of 120 ppb. The relatively high indoor/outdoor ozone ratio is a function of the Centre's design, its internal geometry, and its ventilation system. Conventional art galleries and museums experience much lower indoor ozone exposure. The measured indoor ozone levels imply deleterious effects on the gallery exhibits and an enhanced ozone exposure may have to be considered in the design of modern galleries and museums. 8 references.

  5. The Art Gallery/La Galeria de Arte: An Exhibition of Transformation.

    Science.gov (United States)

    Biagi, Juliet

    2001-01-01

    Describes the development of an art gallery within an urban elementary school, examining its impact on diverse students and their social interactions at school and home. The gallery had a positive impact on students (improved self-esteem, motivation, and appreciation of others); the school (transformation of the physical space and appreciation of…

  6. Museums and art galleries as partners for public health interventions.

    Science.gov (United States)

    Camic, Paul M; Chatterjee, Helen J

    2013-01-01

    The majority of public health programmes are based in schools, places of employment and in community settings. Likewise, nearly all health-care interventions occur in clinics and hospitals. An underdeveloped area for public health-related planning that carries international implications is the cultural heritage sector, and specifically museums and art galleries. This paper presents a rationale for the use of museums and art galleries as sites for public health interventions and health promotion programmes through discussing the social role of these organisations in the health and well-being of the communities they serve. Recent research from several countries is reviewed and integrated into a proposed framework for future collaboration between cultural heritage, health-care and university sectors to further advance research, policy development and evidence-based practice.

  7. Web-Based Student Art Galleries

    Science.gov (United States)

    Burton, David

    2010-01-01

    Exhibition is an important part of the artistic process for students as well as professional artists, but finding enough good places to exhibit can be as difficult for student artists as for adult artists. Venues that are accessible, display art attractively, and provide adequate space for many artists are usually in short supply. There is an…

  8. Blindness, art and exclusion in museums and galleries

    OpenAIRE

    Candlin, Fiona

    2003-01-01

    Drawing on interviews with blind people, this paper examines both their exclusion from museums and galleries and their responses to the art educational provision which is specifically designed to remedy that marginalisation. Blind visitors’ responses to these educational projects was polarised; respondents were either highly critical or very enthusiastic. This paper begins by outlining the interviewees’ criticisms which included, education officers’ misconception of how touch facilitates lear...

  9. InfoGallery: Informative Arts Services for Physical Library Spaces

    DEFF Research Database (Denmark)

    Grønbæk, Kaj; Rohde, Anne; Sundararajah, Balasuthas

    2006-01-01

    Much focus in digital libraries research has been devoted to new online services rather than services for the visitors in the physical library. This paper describes InfoGallery, which is a web-based infrastructure for enriching the physical library space with informative art "exhibitions" of digi...... structure, an editor application and a variety of display clients. The paper discusses the design of the infrastructure and its utilization of RSS, podcasts and manually edited news. Applications in the library domain are described and the experiences are discussed....

  10. Guarding curvilinear art galleries with vertex or point guards

    CERN Document Server

    Karavelas, Menelaos I

    2008-01-01

    One of the earliest and most well known problems in computational geometry is the so-called art gallery problem. The goal is to compute the minimum possible number guards placed on the vertices of a simple polygon in such a way that they cover the interior of the polygon. In this paper we consider the problem of guarding an art gallery which is modeled as a polygon with curvilinear walls. Our main focus is on polygons the edges of which are convex arcs pointing towards the exterior or interior of the polygon (but not both), named piecewise-convex and piecewise-concave polygons. We prove that, in the case of piecewise-convex polygons, if we only allow vertex guards, $\\lfloor\\frac{4n}{7}\\rfloor-1$ guards are sometimes necessary, and $\\lfloor\\frac{2n}{3}\\rfloor$ guards are always sufficient. Moreover, an $O(n\\log{}n)$ time and $O(n)$ space algorithm is described that produces a vertex guarding set of size at most $\\lfloor\\frac{2n}{3}\\rfloor$. When we allow point guards the afore-mentioned lower bound drops down ...

  11. Implementation of the street art works into the Prague galleries programs

    OpenAIRE

    Smrčková, Jana

    2012-01-01

    This thesis focuses on making street art phenomena clearer, particularly contemporary graffiti art. This paper will help gallery owners and other art managers become familiar with the topic, and based on that knowledge, find optimal ways of introducing it into the galleries. One part of the thesis deals with the controversy of street art presentation in public, in particular the confrontation of art vs. authorities. Having considered the large scope of the topic, the thesis concentrates on Pr...

  12. Perceptions of Pre-Service Teachers Value of Art Museums and Galleries

    Science.gov (United States)

    Lemon, Narelle; Garvis, Susanne

    2014-01-01

    Art museums and galleries provide many educational opportunities for generalist classroom teachers to engage in learning experiences with students. Beliefs about engagement with art museums and galleries can begin in teacher education programs. This paper explores the beliefs of pre-service teachers in a Bachelor of Education (primary) program in…

  13. Science Outreach through Art: A Journal Article Cover Gallery

    Science.gov (United States)

    McCullough, Ian

    2015-01-01

    Research faculty journal covers were used to create a gallery in the Science & Technology branch library at the University of Akron. The selection, presentation, and promotion process is shared along with copyright considerations and a review of galleries used for library outreach. The event and display was a great success attracting faculty…

  14. Moving the body painting into the art gallery — knowing about and appreciating works of Aboriginal art

    Directory of Open Access Journals (Sweden)

    Howard Morphy

    2011-06-01

    Full Text Available The paper focuses on two kinds of relationship: between Western fine art and Indigenous art, and between anthropological and art historical approaches to understanding and appreciating works of art. The primary focus is on the process by which Australian Aboriginal art came to be incorporated within galleries of fine art. This process brought both kinds of relationships to the fore in the contemporary context and challenged established boundaries exemplified by the distinction between the museum and the art gallery. It is argued that objects encompassed within the category of fine art come from very different cultural traditions and historical backgrounds. The methods of both art history and anthropology can be productively applied in analysing the forms and significance of artworks in their social and cultural contexts. The paper concludes by considering some of the implications of the co-presence of artworks from different cultural traditions in the same contemporary gallery spaces.

  15. Krasotshnõje snõ Sed Arte Gallery / Irina Butjajeva

    Index Scriptorium Estoniae

    Butjajeva, Irina

    2007-01-01

    Valgevene kunstnike Jelena Shlegeli, Vladimir Gontsharuki, Dmitri Zenkovitshi ja Dmitri Masli maalinäitus "Valgevene värvilised unenäod" Tallinna galeriis Aatrium. Näitust vahendas Sed Arte Gallery, galerist Olga Ljubaskina

  16. Bringing Image and Language Together: A Workshop at the Lehman College Art Gallery.

    Science.gov (United States)

    Wexler, Alice

    2001-01-01

    Discusses a ten day workshop for kindergarten and fourth grade students that centered around the art exhibit "Contemporary Chinese Art and the Literary Culture of China" held at the Lehman College Art Gallery (Bronx, New York). Explains that students created accordion books based on Xing Fei's "Red Book." (CMK)

  17. Lifelong Learning for People Aged 64+ within the Contemporary Art Gallery Context

    Science.gov (United States)

    Goulding, Anna

    2012-01-01

    This paper reports the initial findings from Contemporary Visual Art and Identity Construction--Wellbeing Amongst Older People: a two-year research project that aims to understand how the lives of older people can be improved by examining their use of contemporary visual art in the art gallery and museum. It will focus on data relating to lifelong…

  18. Experiences from a Real-Time Mobile Collaborative Writing System in an Art Gallery

    DEFF Research Database (Denmark)

    Korn, Matthias; Polli, Anna Maria; Klokmose, Clemens Nylandsted

    We present first experiences from Local Area Artworks, a system enabling collaborative art interpretation on-site, deployed during an exhibition in a local art gallery. Through the system, we explore ways to re-connect people to local places by making use of their personal mobile devices as inter......We present first experiences from Local Area Artworks, a system enabling collaborative art interpretation on-site, deployed during an exhibition in a local art gallery. Through the system, we explore ways to re-connect people to local places by making use of their personal mobile devices...... as interfaces to the shared physical space. With a collocated collaborative writing system in the semi-public space of a gallery, we encourage local art discussions and provide a platform for the public to actively participate in interpretations of individual artworks. In this paper, we focus on the experiences...

  19. Beyond the Gallery: Interactions between Audiences, Artists, and Their Art through the Kampala Art Tour 2007-2010

    Science.gov (United States)

    Nagawa, Margaret

    2012-01-01

    When one walks into an art gallery in Kampala, the capital city of Uganda, one sees a predominantly non-Ugandan audience. Visitors to homes of Ugandans, even those wealthy enough to afford art, find typically bare walls. This begs broader questions: (1) What is it about the education and presentation of contemporary art that excludes local…

  20. Experiences from a Real-Time Mobile Collaborative Writing System in an Art Gallery

    DEFF Research Database (Denmark)

    Korn, Matthias; Polli, Anna Maria; Klokmose, Clemens Nylandsted

    We present first experiences from Local Area Artworks, a system enabling collaborative art interpretation on-site, deployed during an exhibition in a local art gallery. Through the system, we explore ways to re-connect people to local places by making use of their personal mobile devices...

  1. 加拿大阿尔伯塔省艺术博物馆%Art Gallery of Alberta

    Institute of Scientific and Technical Information of China (English)

    美国兰德尔·斯图特建筑事务所

    2007-01-01

    @@ The new Art Gallery of Alberta was conceived as an engaging and stimulating center for contemporary art in Edmonton. Celebrating its prominent location on Sir Winston Churchill Square,the main civic and arts public square in the city,the project represents the museum's commitment to enhancing the public's experience of the visual arts.

  2. Art review Keith Tyson, South London Gallery, London

    CERN Multimedia

    Jones, J

    2002-01-01

    Keith Tyson's new exhibition is called Supercollider, the nickname of the CERN particle accelerator in Geneva. "Tyson's attempts to evoke the wonders of the universe include a sphere that changes colour (at least this is pretty), a big, tedious revolving machine with pieces of meteor stuck to it, a massive painting of the "infinite cellular blanket" that resembles a jokey version of the last days of 1960s art, and a 12-part drawing that can be arranged in any order called A Night in a Billion. Chance and the infinite unlikeliness of existence is his heavily stated theme."

  3. Gallery Information

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Paris-Beijing Photo Gallery Add: Dashanzi Art District, 4 Jiuxianqiao Rd, Chaoyang District. Beijing Exhibition Topic: Solo Photography Exhibition of Linus Ricard Date: May 5 to June 22 Tel: 86-10-84599263 Website: www.parisbeijingphotogallery. com

  4. Stories from History, Myth, and the Bible. Snite Museum of Art Gallery Guide. Parts 1-3.

    Science.gov (United States)

    Matthias, Diana C. J.; Barrett, Jesse

    This art education resource, designed for use in the Snite Museum of Art, may also be used with slides or reproductions. Black and white reproductions are included for each of the art works represented, along with title, artist, date, and media information. This three part gallery guide presents a brief synopsis of the stories narrated in the…

  5. Telerobotic Haptic Exploration in Art Galleries and Museums for Individuals with Visual Impairments.

    Science.gov (United States)

    Park, Chung Hyuk; Ryu, Eun-Seok; Howard, Ayanna M

    2015-01-01

    This paper presents a haptic telepresence system that enables visually impaired users to explore locations with rich visual observation such as art galleries and museums by using a telepresence robot, a RGB-D sensor (color and depth camera), and a haptic interface. The recent improvement on RGB-D sensors has enabled real-time access to 3D spatial information in the form of point clouds. However, the real-time representation of this data in the form of tangible haptic experience has not been challenged enough, especially in the case of telepresence for individuals with visual impairments. Thus, the proposed system addresses the real-time haptic exploration of remote 3D information through video encoding and real-time 3D haptic rendering of the remote real-world environment. This paper investigates two scenarios in haptic telepresence, i.e., mobile navigation and object exploration in a remote environment. Participants with and without visual impairments participated in our experiments based on the two scenarios, and the system performance was validated. In conclusion, the proposed framework provides a new methodology of haptic telepresence for individuals with visual impairments by providing an enhanced interactive experience where they can remotely access public places (art galleries and museums) with the aid of haptic modality and robotic telepresence.

  6. Social Phenomenological Analysis as a Research Method in Art Education: Developing an Empirical Model for Understanding Gallery Talks

    Science.gov (United States)

    Hofmann, Fabian

    2016-01-01

    Social phenomenological analysis is presented as a research method to study gallery talks or guided tours in art museums. The research method is based on the philosophical considerations of Edmund Husserl and sociological/social science concepts put forward by Max Weber and Alfred Schuetz. Its starting point is the everyday lifeworld; the…

  7. Adult Education for Social and Environmental Change in Contemporary Public Art Galleries and Museums in Canada, Scotland and England

    Science.gov (United States)

    Clover, Darlene E.

    2015-01-01

    Historically, pubic art galleries and museums have a well-deserved reputation for elitism, colonialism and exclusion and they are, therefore, frequently omitted from the discourse of adult education. However, the escalating social, cultural and ecological problems of this new century have placed pressure on these public institutions to change and…

  8. Neuroelectric brain imaging during a real visit of a fine arts gallery: a neuroaesthetic study of XVII century Dutch painters.

    Science.gov (United States)

    Babiloni, F; Cherubino, P; Graziani, I; Trettel, A; Infarinato, F; Picconi, D; Borghini, G; Maglione, A G; Mattia, D; Vecchiato, G

    2013-01-01

    Neuroaesthetic is a scientific discipline founded more than a decade ago and it refers to the study of the neural bases of beauty perception in art. The aim of this paper is to investigate the neuroelectrical correlates of brain activity of the observation of real paintings showed in a national fine arts gallery (Scuderie del Quirinale) in Rome, Italy. In fact, the present study was designed to examine how motivational factors as indexed by EEG asymmetry over the prefrontal cortex (relative activity of the left and right hemispheres) could be related to the experience of viewing a series of figurative paintings. The fine arts gallery was visited by a group of 25 subjects during an exhibition of the XVII century Dutch painters. Results suggested a strict correlation of the estimated EEG asymmetry with the verbal pleasantness scores reported by the subjects (p<0,05) and an inverse correlation of the perceived pleasantness with the observed painting's surface dimensions (p<0,002).

  9. Visual events and the friendly eye: modes of educating vision in new educational settings in Danish art galleries

    DEFF Research Database (Denmark)

    Illeris, Helene

    2009-01-01

    in order to stimulate the ‘disciplined eye' or the ‘aesthetic eye' of the visitors, this article aims to discuss the practices of looking encouraged by contemporary and experimental educational projects. The first part of the article develops a theoretical perspective on educational settings conceived...... as visual events, and it discusses how ‘the desiring eye' of some constructivist approaches, along with traditional practices of looking, have contributed to the formation of the modern, autonomous individual. The second part of the article analyses two cases from Danish art galleries and, inspired by Mieke...

  10. Post-occupancy evaluation of a restored industrial building: A contemporary art and design gallery in Mexico

    Directory of Open Access Journals (Sweden)

    J. Mundo-Hernández

    2015-12-01

    Full Text Available This paper presents the results obtained from a post-occupancy evaluation (POE study conducted in an old fabric building called “La Violeta”. This structure has been recently converted into a contemporary art gallery. La Violeta is located in Puebla City, Mexico. The building dates from the beginning of the 19th century; it was built and used as a textile factory until the first decades of the 20th century. This POE study aims to assess the new use of the building from the users׳ point of view. Methodology involves historical research of the building, analysis of the conversion strategy, walkthrough investigation, and a user survey. Questions regarding the re-utilization strategy used in the building and its current use are included in the survey, such as “How do people perceive the space regarding its functionality, accessibility, and comfort?” Although the re-utilization process destroyed several historic elements, the re-use of old industrial spaces that otherwise would be obsolete and disused seems pertinent. Developing small renovation projects as part of an integral and wider project seems feasible. Users perceive the building as comfortable but not properly advertised as an art gallery, and its location is difficult to find.

  11. Walk, Look, Remember: The Influence of the Gallery's Spatial Layout on Human Memory for an Art Exhibition.

    Science.gov (United States)

    Krukar, Jakub

    2014-09-01

    The spatial organisation of museums and its influence on the visitor experience has been the subject of numerous studies. Previous research, despite reporting some actual behavioural correlates, rarely had the possibility to investigate the cognitive processes of the art viewers. In the museum context, where spatial layout is one of the most powerful curatorial tools available, attention and memory can be measured as a means of establishing whether or not the gallery fulfils its function as a space for contemplating art. In this exploratory experiment, 32 participants split into two groups explored an experimental, non-public exhibition and completed two unanticipated memory tests afterwards. The results show that some spatial characteristics of an exhibition can inhibit the recall of pictures and shift the focus to perceptual salience of the artworks.

  12. Crafting glass vessels: current research on the ancient glass collections in the Freer Gallery of Art, Washington, D.C.

    Science.gov (United States)

    Nagel, Alexander; McCarthy, Blythe; Bowe, Stacy

    Our knowledge of glass production in ancient Egypt has been well augmented by the publication of recently excavated materials and glass workshops, but also by more recent materials analysis, and experiments of modern glass-makers attempting to reconstruct the production process of thin-walled coreformed glass vessels. From the mounting of a prefabricated core to the final glass product our understanding of this profession has much improved. The small but well preserved glass collection of the Freer Gallery of Art in Washington, D.C. is a valid tool for examining and studying the technology and production of ancient Egyptian core formed glass vessels. Charles Lang Freer (1854-1919) acquired most of the material from Giovanni Dattari in Cairo in 1909. Previously the glass had received only limited discussion, suggesting that most of these vessels were produced in the 18th Dynasty in the 15th and 14th centuries BCE, while others date from the Hellenistic period and later. In an ongoing project we conducted computed radiography in conjunction with qualitative x-ray fluorescence analysis on a selected group of vessels to understand further aspects of the ancient production process. This paper will provide an overview of our recent research and present our data-gathering process and preliminary results. How can the examinations of core formed glass vessels in the Freer Gallery contribute to our understanding of ancient glass production and technology? By focusing on new ways of looking at old assumptions using the Freer Gallery glass collections, we hope to increase understanding of the challenges of the production process of core-vessel technology as represented by these vessels.

  13. Earth Resources Observation and Science (EROS) Center's Earth as Art Image Gallery 3

    Data.gov (United States)

    National Aeronautics and Space Administration — The Earth Resources Observation and Science (EROS) Center manages the Earth as Art Three exhibit, which provides fresh and inspiring glimpses of different parts of...

  14. Art Therapy Services to Support Veterans' Transition to Civilian Life: The Studio and the Gallery

    Science.gov (United States)

    DeLucia, Jennifer Marie

    2016-01-01

    Beyond having knowledge of the treatment of combat-related trauma, art therapists need to understand veterans' experiences of transition from military to civilian life in order to offer effective interventions. This article reviews the literature on veteran transition and the challenges common to transition difficulty and describes two major…

  15. Practicing psychology in the art gallery: Vernon Lee's aesthetics of empathy.

    Science.gov (United States)

    Lanzoni, Susan

    2009-01-01

    Late nineteenth-century psychologists and aestheticians were fascinated by the study of psychological and physiological aspects of aesthetic response, and the British intellectual and aesthete Vernon Lee was a major participant in this venture. Working outside the academy, Lee conducted informal experiments with Clementina Anstruther-Thomson, recording changes in respiration, balance, emotion, and body movements in response to aesthetic form. In fashioning her aesthetics of empathy, she mined a wealth of psychological theories of the period including motor theories of mind, physiological theories of emotion, evolutionary models of the usefulness of art, and, most prominently, the empathic projection of feeling and movement into form. Lee distributed questionnaires, contributed to scientific journals, carried out her own introspective studies, and debated aesthetics with leading psychologists. This paper critiques the prevailing view of Lee's aesthetics as a displaced sign of her gender or sexuality, and questions her status as simply an amateur in the field of psychology. Instead, I argue that Lee's empirically based empathy theory of art was a significant contribution to debates on psychological aesthetics at the outset of the twentieth century, offering a synthesis of Lipps's mentalistic Einfühlung and sensation-based imitation theories of aesthetic response.

  16. Image Gallery

    Science.gov (United States)

    ... Accredited Practices EER Endowment for Education & Research Journal Image Gallery Click each image to enlarge. Fetal nose/lips Fetal nose, upper ... in the third trimester of pregnancy; the ultrasound image shows the chest of each fetus with the ...

  17. Hollow Core, Whispering Gallery Resonator Sensors

    CERN Document Server

    Ward, Jonathan M; Chormaic, Síle Nic

    2014-01-01

    A review of hollow core whispering gallery resonators (WGRs)is given. After a short introduction to the topic of whispering gallery resonators we provide a description of whispering gallery modes in hollow or liquid core WGRs. Next, whispering gallery mode (WGM) sensing mechanisms are outlined and some fabrication methods for microbubbles, microcapillaries and other tubular WGM devices are discussed. We then focus on the most common applications of hollow core WGRs, namely refractive index and temperature sensing, gas sensing, force sensing, biosensing, and lasing. The review highlights some of the key papers in this field and gives the reader a general overview of the current state-of-the-art.

  18. Innovative Arts Programs Require Innovative Partnerships: A Case Study of STEAM Partnering between an Art Gallery and a Natural History Museum

    Science.gov (United States)

    Grant, Jacqualine; Patterson, Delaney

    2016-01-01

    The arts animate learning because they are inherently experiential and because of their potential to develop creative and critical thinking skills in students. These same skills are valued in science, technology, engineering, and math (STEM) education, but the arts have not been consistently included in STEM lessons. We transformed our STEM…

  19. Rael Artel Gallery Tartus ja Varssavis

    Index Scriptorium Estoniae

    2006-01-01

    Rael Artel Gallery : Non-Profit Project Space'i tegevusest Tartus. 27.04-27.05. 2006 Varssavis Warszawski Aktyw Artystov'i ruumides näitus "Estonian Video Art. The blood project", osalesid Flo Kasearu, Gert Hatsukov, Külli K. Kaats, Allan Tõnissoo, Marko Nautras, Tanja Muravskaja ja Airi Triisberg

  20. NAIP Status Maps Gallery

    Data.gov (United States)

    Farm Service Agency, Department of Agriculture — NAIP Status Maps Gallery. These maps illustrate what aerial imagery collection is planned, whats been collected, when it is available and how it is available. These...

  1. Lunar Orbiter Photo Gallery

    Data.gov (United States)

    National Aeronautics and Space Administration — The Lunar Orbiter Photo Gallery is an extensive collection of over 2,600 high- and moderate-resolution photographs produced by all five of the Lunar Orbiter...

  2. The Hasler Gallery

    OpenAIRE

    2015-01-01

    Five artists and designers were given free rein of the Museum of Domestic Design and Architecture, as part of a local regeneration project in the Hasler Gallery, North Finchley. This was an exciting opportunity to develop new work inspired by the Museum's collections, and to show it in an unusual location. The site itself, the Hasler Gallery, was crucial to the success of the project and proved to be a catalyst for some of the work's development. As this book shows, all of the artists made c...

  3. An HI Rogues Gallery

    CERN Document Server

    Hibbard, J E; Rupen, M P; Schiminovich, D

    2001-01-01

    We have begun a compilation of HI maps of peculiar galaxies kindly contributed by individual investigators, many as part of the ``Gas & Galaxy Evolution'' conference. In this gallery we present images of the first 181 objects, which includes over 400 individually cataloged galaxies. The images consist of a greyscale representation of the optical morphology and an accompanying optical image with HI contours superimposed. A web-based ``living Gallery'' is being maintained on the NRAO homepage (presently at http://www.nrao.edu/astrores/HIrogues/).

  4. Advertising identities: virtual galleries as places of identity

    Directory of Open Access Journals (Sweden)

    Alexandra Zontea

    2010-10-01

    Full Text Available This paper is focused on the public presentation of self through virtual art galleries, singling out the field of photography. Photography has always been disputed as being part of the highbrow arts because of its popular character. Today, anyone who owes a photo camera can experience photography as art, without a rigorous training. Everybody is able to expose the photos freely to a large number of people, on the Internet. Consequently, the Internet opens up a virtual space, in which photo artists and amateurs can promote their works and exhibit them in a personal online gallery, which represents their place in the virtual vastness. Therefore, my research approaches the matter of the virtual gallery as an identitary place, being focused on finding out why artists choose to exhibit in virtual galleries. I asked myself what are the new functions of the virtual art galleries?Are they understood as online markers that distinguish the owners in these virtual environments? In other words, are these personal galleries a way of expressing online identities?

  5. Triumphs Show: What Makes Art History? Year 7 Exploit the Resources of the Victoria and Albert Museum's Medieval Gallery to Create and Curate Their Own Answer

    Science.gov (United States)

    Copsey, Sarah

    2014-01-01

    What do 14 Year 7 students, an art teacher, a history teacher and the Victoria and Albert Museum have in common? They are all part of the "Stronger Together" Museum Champion project run by The Langley Academy and the River & Rowing Museum and supported by Arts Council England, designed to engage students, teachers and museum staff…

  6. The Habitable Zone Gallery

    CERN Document Server

    Kane, Stephen R

    2012-01-01

    The Habitable Zone Gallery (www.hzgallery.org) is a new service to the exoplanet community which provides Habitable Zone (HZ) information for each of the exoplanetary systems with known planetary orbital parameters. The service includes a sortable table with information on the percentage of orbital phase spent within the HZ, planetary effective temperatures, and other basic planetary properties. In addition to the table, we also plot the period and eccentricity of the planets with respect to their time spent in the HZ. The service includes a gallery of known systems which plot the orbits and the location of the HZ with respect to those orbits. Also provided are animations which aid in orbit visualization and provide the changing effective temperature for those planets in eccentric orbits. Here we describe the science motivation, the under-lying calculations, and the structure of the web site.

  7. Neutron whispering gallery

    Science.gov (United States)

    Nesvizhevsky, Valery V.; Voronin, Alexei Yu.; Cubitt, Robert; Protasov, Konstantin V.

    2010-02-01

    The `whispering gallery' effect has been known since ancient times for sound waves in air, later in water and more recently for a broad range of electromagnetic waves: radio, optics, Roentgen and so on. It consists of wave localization near a curved reflecting surface and is expected for waves of various natures, for instance, for atoms and neutrons. For matter waves, it would include a new feature: a massive particle would be settled in quantum states, with parameters depending on its mass. Here, we present for the first time the quantum whispering-gallery effect for cold neutrons. This phenomenon provides an example of an exactly solvable problem analogous to the `quantum bouncer'; it is complementary to the recently discovered gravitationally bound quantum states of neutrons . These two phenomena provide a direct demonstration of the weak equivalence principle for a massive particle in a pure quantum state. Deeply bound whispering-gallery states are long-living and weakly sensitive to surface potential; highly excited states are short-living and very sensitive to the wall potential shape. Therefore, they are a promising tool for studying fundamental neutron-matter interactions, quantum neutron optics and surface physics effects.

  8. The Water Supply and Drainage System Design of the Environmental Protection Building——POLA Art Gallery%POLA美术馆环保型建筑给排水系统设计

    Institute of Scientific and Technical Information of China (English)

    杨熹微; 长谷川严

    2012-01-01

    POLA Art Gallery is an environmental protection building, which has been assessed by comprehensive assessment system for building environmental efficiency ( I. E. CASBEE). It is designed as a green building for two aspects of environmental quality and performance, and reducing the environmental load. In the design of green building, the design of water supply and drainage system is highlight. The system constitutes of supply water of city, rainwater and water inflow, these constitution can be used effectively by comprehensively thinking about their characteristics and in detail design.%POLA美术馆是一座环保型美术馆,显著特征主要表现在,引入综合环境性能评估系统(CASBEE)等评估方法,并从注重品质与性能以及降低负荷两方面进行设计.给排水系统是本工程的特色.给水系统由城市供水、雨水和涌水部分构成,通过综合考虑和仔细设计,发挥各自长处实现水资源的有效利用.

  9. 目的论视角下旅游文本的翻译%Translation of Tourism Texts from the Perspectiveof Skopos Theory:with the Translation of Tourism Text of China Shen Shou Art Gallery as a Case Study

    Institute of Scientific and Technical Information of China (English)

    张云

    2014-01-01

    The colorful exotic culture of China attracts millions of tourists .As the immediate tool of propaganda ,tourism texts assume the responsibility of communicating culture and attracting tourists .Skopos theory takes readers as the core of translation ,claiming that translators should convey the cultural information in source texts according to the purpose of trans-lation .Skopos theory highlights the purposes and functions of translation ;therefore ,it is an operational and instructive guideline of the tourism translation .With the translation of tourism text of China Shen Shou Art Gallery as a case study , this thesis attempts to discuss the effective strategies to the translation of tourism texts in the context of Skopos theory ,in attempts to improve the propagating effect of tourism texts and realize the expected communicative purpose of tourism texts .%试图在目的论的关照下,以中国沈寿艺术馆的旅游资料英译为例,探讨如何通过有效的翻译策略提高旅游资料英译文本的宣传效果,以实现它的预期交际目的。

  10. O mercado de galerias e o comércio de arte moderna: São Paulo e Rio de Janeiro nos anos 1950-1960 The gallery market and commerce of modern art: São Paulo and Rio de Janeiro in the 1950's-1960's

    Directory of Open Access Journals (Sweden)

    Maria Lúcia Bueno

    2005-08-01

    Full Text Available Os anos 50 no Brasil transitaram do Nacionalismo de Vargas ao Desenvolvimento de JK, passando pela implantação definitiva de uma sociedade urbana modernizada. Sintonizada com a atmosfera desponta uma geração, imbuída de uma nova sensibilidade estética e novos hábitos de consumo. Neste universo criou-se a base da primeira estrutura de mercado de arte no país, nas cidades de São Paulo e Rio de Janeiro, tendo como condutor as galerias privadas de arte moderna e comtemporânea.In Brazil, the 1950's from the nationalism of Vargas to the developmentism of JK, passing through the definitive implantation of a modernized urban society. Tuned with the atmosphere, a generation is born, impregnated with a new habit of consumption. In this universe, the basis for the first structure of art market in the country was created in the cities of São Paulo and Rio de Janeiro, having as conductores the private galleries of modern and contemporary art.

  11. What's wrong with cinema in the gallery?

    OpenAIRE

    Hamlyn, Nicky

    2012-01-01

    This article builds on my earlier research (e.g. on William Raban's site-specific work) into the contemporary problem of showing moving image work in art galleries. The misfit between works' formal strategies and their mode of presentation is an ongoing issue. The essay is based on a review of two exhibitions held in London in 2011 of video works by Philippe Parreno, and Douglas Gordon. Parreno's show was praised as novel and exemplary for the way in which it marshalled its audience from...

  12. How Long is the SLAC Gallery?

    Energy Technology Data Exchange (ETDEWEB)

    Imfeld, Hans; /SLAC

    2007-08-24

    How long is the gallery? Since the two methods of observation have similar accuracy and in the interest of keeping it simple, AEG averaged the two methods and determined that the length of the Gallery is 3073.72m.

  13. Whispering Gallery States of Antihydrogen

    CERN Document Server

    Voronin, A Yu; Reynaud, S

    2011-01-01

    We present a theoretical study of the motion of an antihydrogen atom ($\\bar{H}$) near a curved material surface. We predict existence of $\\bar{H}$ atom long-living quasistationary states, localized near the surface due to quantum reflection from the Casimir-Polder/van der Waals potential. Such states are an atom-wave analog of the whispering gallery modes, known in acoustics, optics and neutron physics. We argue that the whispering gallery states of $\\bar{H}$ atoms could be regarded as a full analog of recently predicted gravitational states of $\\bar{H}$, where the centrifugal potential plays a role of the linear gravitational potential.

  14. MoMLA: From Panel to Gallery

    Science.gov (United States)

    Vitanza, Victor, Ed.; Kuhn, Virginia, Ed.

    2013-01-01

    The work presented here in this "Panel to Gallery" was originally produced and assembled for the 2012 Modern Language Association Conference in Seattle, Washington. Similar to "From Gallery to Webtext", the event Victor curated for the 2006 College Composition and Communication Conference, this "Panel to Gallery" event at MLA set aside the…

  15. Artfulness

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    2011-01-01

    a collage of previously published materials on Artfulness, in this journal targeted teachers for dysfunctional behaviour children.......a collage of previously published materials on Artfulness, in this journal targeted teachers for dysfunctional behaviour children....

  16. Triumphs Show: What Makes Art History? Year 7 Exploit the Resources of the Victoria and Albert Museum's Medieval Gallery to Create and Curate Their Own Answer

    Science.gov (United States)

    Copsey, Sarah

    2014-01-01

    What do 14 Year 7 students, an art teacher, a history teacher and the Victoria and Albert Museum have in common? They are all part of the "Stronger Together" Museum Champion project run by The Langley Academy and the River & Rowing Museum and supported by Arts Council England, designed to engage students, teachers and museum staff…

  17. ARTS

    DEFF Research Database (Denmark)

    Mahadevan, Shankar; Virk, Kashif M.; Madsen, Jan

    2007-01-01

    . We present an abstract system-level modelling and simulation framework (ARTS) which allows for cross-layer modelling and analysis covering the application layer, middleware layer, and hardware layer. ARTS allows MPSoC designers to explore and analyze the network performance under different traffic...... and load conditions, consequences of different task mappings to processors (software or hardware) including memory and power usage, and effects of RTOS selection, including scheduling, synchronization and resource allocation policies. We present the application and platform models of ARTS as well...... as their implementation in SystemC. We present the usage of the ARTS framework as seen from platform developers’ point of view, where new components may be created and integrated into the framework, and from application designers’ point of view, where existing components are used to explore possible implementations...

  18. Gallery of Portraits and Other Pictures

    Science.gov (United States)

    Velarde, M. G.

    Colleagues, scientific collaborators and visitors, and places… of significance in the life of Prof. M.G. Velarde. The gallery also illustrates the cosmopolitan life at Instituto Pluridisciplinar of Universidad Complutense of Madrid. Science is part of Culture.

  19. Nanofabricated Optomechanical Whispering Gallery Mode Resonators Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Strong interest in whispering gallery mode resonators (WGMR) for use in chip-scale photonic devices is motivated by their high optical quality, mechanical simplicity...

  20. Art Appreciation

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    Modern embossed forged copper has an elegant character. This art form works well as decoration for the walls of buildings. Chen Chuan, the designer, pursues a look of simplicity and powerfulness in his works Auspiciousness and Harmony, which is based on the themes of man and nature. Chen carefully plans the arrangement of convex and concave parts, adding texture by hammering or scraping in many small points and fine lines. With a steel pick, the artist creates a surface sometimes rough and matte, sometimes smooth and shiny. Chen Chuan graduated from the Hubei Institute of Arts in 1965, and was deputy director of the Shandong Provincial Art Gallery from 1984 to 1991. A member of the China Artists Association and the China Graphic Art Association, Chen Chuan is ranked as a first-class artisan, and currently serves as director of the forge copper art office of the Shandong Academy. He has won awards at exhibitions held both at home and abroad.

  1. Gallery of Planetary Nebula Spectra

    CERN Document Server

    Kwitter, K B; Kwitter, Karen B.; Henry, Richard B.C.

    2006-01-01

    We present the Gallery of Planetary Nebula Spectra now available at http://oitwilliams.edu/nebulae. The website offers high-quality, moderate resolution (~7-10 A FWHM) spectra of 128 Galactic planetary nebulae from 3600-9600 A, obtained by Kwitter, Henry, and colleagues with the Goldcam spectrograph at the KPNO 2.1-m or with the RC spectrograph at the CTIO 1.5-m. The master PN table contains atlas data and an image link. A selected object's spectrum is displayed in a zoomable window; line identification templates are provided. In addition to the spectra themselves, the website also contains a brief discussion of PNe as astronomical objects and as contributors to our understanding of stellar evolution. We envision that this website, which concentrates a large amount of data in one place, will be of interest to a variety of users: researchers might need to check the spectrum of a particular object of interest; the non-specialist astronomer might simply be interested in perusing such a collection of spectra; and...

  2. An enquiry into passive and active exclusion from sensory aesthetics in museums and on the Web: two case studies of final year students at California School for the Blind studying art works through galleries and on the web

    OpenAIRE

    Hayhoe, S

    2014-01-01

    Two case studies of students from California School for the Blind studying artworks in museums and on the Web are discussed. The analysis focuses on the traditional understanding that unreachable artworks in the museum are deciphered by non-intellectual elites primarily from the perspective of visual perception and museums are simple vessels of art, as contended by Ernst Gombrich and Pierre Bourdieu, and that exclusion is either passive or active. It is also argued that there is a bridge betw...

  3. Expanding the Spanish Classroom: The "Art" in Liberal Arts

    Science.gov (United States)

    Díaz, Erin M.

    2016-01-01

    Supplementing the foreign language curriculum with the incorporation of art museum visits has benefits for students, faculty, the campus art gallery, and the institution. Such a collaborative program serves to expand the classroom and complement instruction by providing learners with a new space to engage in authentic practice in the target…

  4. Multimedia for Art ReTrieval (M4ART)

    NARCIS (Netherlands)

    Broek, E.L. van den; Schouten, T.E.; Kok, T.; Hoenkamp, E.C.M.

    2006-01-01

    The prototype for an online Multimedia for Art ReTrieval (M4ART) system is introduced, that provides entrance to the digitized collection of the National Gallery of the Netherlands (the Rijksmuseum). The current online system of the Rijksmuseum is text-based and requires expert knowledge concerning

  5. Shooting Gallery Notes. Working Paper #22. Preliminary.

    Science.gov (United States)

    Bourgois, Philippe

    This paper contains ethnographic participant-observation field notes taken on a one-night visit to a "shooting gallery" in East Harlem (New York City) along with background information and commentary. East Harlem, also referred to as "El Barrio" or Spanish Harlem, is a 200-square block neighborhood on the upper East Side of Manhattan in New York…

  6. Staging scientific controversies: a gallery test on science museums' interactivity.

    Science.gov (United States)

    Yaneva, Albena; Rabesandratana, Tania Mara; Greiner, Birgit

    2009-01-01

    The "transfer" model in science communication has been addressed critically from different perspectives, while the advantages of the interactive model have been continuously praised. Yet, little is done to account for the specific role of the interactive model in communicating "unfinished science." The traditional interactive methods in museums are not sufficient to keep pace with rapid scientific developments. Interactive exchanges between laypeople and experts are thought mainly through the lens of a dialogue that is facilitated and framed by the traditional "conference room" architecture. Drawing on the results of a small-scale experiment in a gallery space, we argue for the need for a new "architecture of interaction" in museum settings based on art installation and simulation techniques, which will enhance the communication potentials of science museums and will provide conditions for a fruitful even-handed exchange of expert and lay knowledge.

  7. A Phenomenological Reading of Hegel's Concept of History of Philosophy:An Analysis of "The Gallery of Opinions","The Gallery of Knowledge" and "The Gallery of Dresden"

    Institute of Scientific and Technical Information of China (English)

    Ke Xiaogang

    2006-01-01

    From a phenomenological perspective of game-space and horizon,this paper tries to make a deconstructive reading of Hegel's "two galleries",namely,"the gallery of opinions"and "the gallery of knowledge",which are mentioned in the introduction of Hegel's Lectures on the History of Philosophy.The reading shows that the Game-space or the ab-gruendiger Grund of the Hegelian concept of philosophical history lies in an originally differencing space that is keeping in absence,which is called by Edmund Husserl and Jacques Derrida "the gallery of Dresden".

  8. Publicly Accessible Art Collections in Copenhagen during the Napoleonic Era

    DEFF Research Database (Denmark)

    Svenningsen, Jesper

    2015-01-01

    This article describes the increasing accessibility of private galleries in Copenhagen during the early years of the nineteenth century, which formed an important prelude to the formation of a formal public art gallery in 1824-25. After a period of gradually increasing openness of a few private c...

  9. Older People Learning through Contemporary Visual Art--Engagement and Barriers

    Science.gov (United States)

    Goulding, Anna

    2013-01-01

    This article addresses how older people understand and engage with contemporary art in the gallery context--whether there is something unique to the art, the format of the visits, the pedagogical approaches used by gallery educators, the social contact, or a combination of all these factors. It also addresses the psychosocial barriers to…

  10. Researching Student Experiences of Digital Workshops in Art Gallery Education

    DEFF Research Database (Denmark)

    Kobbernagel, Christian

    2012-01-01

    to investigate shared patterns among students’ experiences. The integration of a qualitative approach with quantitative technique provides a special interview and ensures that the analysis remains focused on the students’ perspective. This approach offers a way to overcome problems with weak links between data......In the development of methods to explore student views on creative learning processes using digital media, Q methodology and its applications offer a promising framework. The method addresses the complexity of subjective viewpoints by applying a technique and analysis that combine materials...... materials in mixed-method studies, as the viewpoints expressed by study participants are initially mapped by a quantification procedure designed to integrate open-ended questioning and survey technique. The study presented here illustrates the use of this approach in an enquiry into students’ experiences...

  11. Dazzling Physics Gallery Opens in Dallas Art Deco Building.

    Science.gov (United States)

    Gifted Child Today (GCT), 1989

    1989-01-01

    The Dallas Science Place contains 55 interactive displays on observable phenomena, organized into 7 topic areas: motion, waves, matter, electromagnetism, energy, change, and entropy. Attempts were made to keep the exhibits' forms elemental, so that the underlying physical phenomena could be readily observed and experienced. (JDD)

  12. Art and Architectural Space

    DEFF Research Database (Denmark)

    Unterrainer, Walter

    2014-01-01

    art and architectural space museums and other exhibition spaces or how artists learn to love architects Over the last two decades, innumerable new museums, art galleries and other exhibition spaces have been built and opened all over the globe. The most extreme growth happened in China, where...... historically considered even the mother of all arts) - but more relevant: what are appropriate architectural spaces for presenting, exhibiting, contemplating, reflecting, meditating, discussing, enjoying, dissenting, debating creations of art. Simplified, this is a question about the relation between package...... and its content. The urban and spatial question goes far beyond museums and other buildings for art: how in democratic societies should public spaces be supported by art and how can public art support ´cityness´ and meaning versus spaces of consumerism. Famous but egocentric buildings with the main...

  13. Demonstration of LED Retrofit Lamps at the Smithsonian American Art Museum, Washington, DC

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Naomi J.; Rosenfeld, Scott M.

    2012-06-22

    This report documents observations and results obtained from a lighting demonstration project conducted under the U.S. Department of Energy GATEWAY Solid-State Lighting (SSL) Technology Demonstration Program at the Smithsonain American Art Museum in Washington, DC. LED Lamp samples were tested in the museum workshop, temporarily installed in a gallery for feedback, and ultimately replaced all traditional incandescent lamps in one gallery of modernist art at the American Art Museum and partially replacing lamps in two galleries at the Musesum's Renwick Gallery. This report describes the selection and testing process, technology challenges, perceptions, economics, energy use, and mixed results of usign LED replacement lamps in art galleries housing national treasures.

  14. Coral Reefs: A Gallery Program, Grades 7-12.

    Science.gov (United States)

    National Aquarium in Baltimore, MD. Dept. of Education.

    Gallery classes at the National Aquarium in Baltimore give the opportunity to study specific aquarium exhibits which demonstrate entire natural habitats. The coral reef gallery class features the gigantic western Atlantic coral reef (325,000 gallons) with over 1,000 fish. The exhibit simulates a typical Caribbean coral reef and nearby sandy…

  15. Reconfigurable Optical Spectra from Perturbations on Elliptical Whispering Gallery Resonances

    Science.gov (United States)

    Mohageg, Makan; Maleki, Lute

    2008-01-01

    Elastic strain, electrical bias, and localized geometric deformations were applied to elliptical whispering-gallery-mode resonators fabricated with lithium niobate. The resultant perturbation of the mode spectrum is highly dependant on the modal indices, resulting in a discretely reconfigurable optical spectrum. Breaking of the spatial degeneracy of the whispering-gallery modes due to perturbation is also observed.

  16. Designing whispering gallery modes via transformation optics

    Science.gov (United States)

    Kim, Yushin; Lee, Soo-Young; Ryu, Jung-Wan; Kim, Inbo; Han, Jae-Hyung; Tae, Heung-Sik; Choi, Muhan; Min, Bumki

    2016-10-01

    In dielectric cavities with a rotational symmetry, whispering gallery modes (WGMs) with an extremely long lifetime (that is, a very high Q factor) can be formed by total internal reflection of light around the rim of the cavities. The ultrahigh Q factor of WGMs has enabled a variety of impressive photonic systems, such as ultralow threshold microlasers, bio-sensors with unprecedented sensitivity and cavity optomechanical devices. However, the isotropic emission of WGMs, which is due to the rotational symmetry, is a serious drawback in applications that require directional light sources. Considerable efforts have thus been devoted to achieving directional emission by intentionally breaking the rotational symmetry. However, all of the methods proposed so far have suffered from substantial Q-spoiling. Here, we show how the mode properties of dielectric whispering gallery cavities, such as the Q factor and emission directionality, can be tailored at will using transformation optics. The proposed scheme will open a new horizon of applications beyond the conventional WGMs.

  17. ART STAGE SINGAPORE THE NEW DESTINATION FOR THE ART WORLD

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    ASlA’S NEW INTERNATIONAL TOP CONTEMPORARY ART FAIR Art Stage Singapore supports and protects the interests of Asian galleries by elevating them to a level of international importance in order to help propel them as strong and competitive players in the global market. Therefore,the heart of the fair is made up of the best and most exciting of Asia’s artistic creativity,showcasing Asia’s most important

  18. Art Medium and Art Infrastructure Development in Contemporary Indonesian Art

    Directory of Open Access Journals (Sweden)

    A. Rikrik Kusmara

    2013-11-01

    Full Text Available This research review Indonesian contemporary artists that used the various media in the presentation in his works over the years since 2000 until now. Survey at Pameran Besar Indonesia "Manifesto" in May 2008, were around 670 Indonesian living artists, 350 are consistently professional artists, 41 artists who utilize a variety of media in each works and 6 of them are artists who used a various of media on their solo exhibition including combining conventional media with new media and installation approaches. 6 artists are analyzed on the structure of the media presentation configuration their used, and generally they used more than 3 types of media in their solo exhibition, first, painting/drawing, second, sculpture/object/installation, and third video/photography. In the study of each exhibition process, generally utilizing the curatorial and sponsored by promotor (gallery. This research shows a rapid development of economic infrastructure in Indonesian the art in 2000-an era with the emergence of many auction hall, a new generation of collectors and galleries, and the Asian art market and global orientation, it became one of the holding in contemporary art of Indonesia, has been shifting art situation from cultural appreciation in the era of 90-to an era to cultural production.

  19. Art phenomena and cultural heritage

    OpenAIRE

    Mahne, Nal

    2011-01-01

    The purpose of this diploma was to outline the curriculum of art workshops on cultural heritage, organized in gallery Krpan in Cerknica. The paper is composed of two parts. It links field of cultural heritage in connection with art planning. In the theoretical part we introduced the concept of cultural heritage, its various forms as well as its protection and preservation with our relation to cultural heritage. Further it reflects field of etnographic record connected with still usefull p...

  20. Promenade Among Words and Things: The Gallery as Catalogue, the Catalogue as Gallery

    Directory of Open Access Journals (Sweden)

    Mari Lending

    2015-12-01

    Full Text Available In the mid nineteenth century new casting techniques allowed for the production of huge architectural fragments. Well-selected collections could ideally display perfect series in galleries in which the visitor could wander among monuments and experience architecture history on full scale. The disembodied material of plaster was considered capable of embodying a number of modern historical taxonomies and aesthetical programs, most importantly chronology, comparison, style, and evolution. Veritable showcases of historicism, the casts could illustrate in spatial arrangements new conceptions on the history, contemporaneity and future of architecture. Plaster cast became a main medium in which to publish antiquities as novelties for grand audiences, taking the printed and published beyond the two-dimensional space of words and images. However, due to the increasing market of casts and their sheere size and weight, the reproductions as mounted in the galleries often behaved as unruly as architecture does outside curatorial control. In the end only the catalogues, the paper versions of these imaginary museums were capable to create the orders that their plaster referents constantly aspired to destroy. An important chapter in the history of the architecture museum these plaster monuments belong to a part of architectural print culture in which catalogues were curated and galleries edited. Metaphors drawn from the realm of writing saturated the discourse on the display of casts. Images and texts fluctuated and the image-objects were compared to books, paper, pages, documents and libraries but above all to illustrations inviting promenades in time and space.

  1. Aptasensors Based on Whispering Gallery Mode Resonators

    Science.gov (United States)

    Nunzi Conti, Gualtiero; Berneschi, Simome; Soria, Silvia

    2016-01-01

    In this paper, we review the literature on optical evanescent field sensing in resonant cavities where aptamers are used as biochemical receptors. The combined advantages of highly sensitive whispering gallery mode resonator (WGMR)-based transducers, and of the unique properties of aptamers make this approach extremely interesting in the medical field, where there is a particularly high need for devices able to provide real time diagnosis for cancer, infectious diseases, or strokes. However, despite the superior performances of aptamers compared to antibodies and WGMR to other evanescent sensors, there is not much literature combining both types of receptors and transducers. Up to now, the WGMR that have been used are silica microspheres and silicon oxynitride (SiON) ring resonators. PMID:27438861

  2. Optical rogue waves in whispering-gallery-mode resonators

    Science.gov (United States)

    Coillet, Aurélien; Dudley, John; Genty, Goëry; Larger, Laurent; Chembo, Yanne K.

    2014-01-01

    We report a theoretical study showing that rogue waves can emerge in whispering-gallery-mode resonators as the result of the chaotic interplay between Kerr nonlinearity and anomalous group-velocity dispersion. The nonlinear dynamics of the propagation of light in a whispering-gallery-mode resonator is investigated using the Lugiato-Lefever equation, and we give evidence of a range of parameters where rare and extreme events associated with non-Gaussian statistics of the field maxima are observed.

  3. Optical Rogue Waves in Whispering-Gallery-Mode Resonators

    CERN Document Server

    Coillet, Aurélien; Genty, Goery; Larger, Laurent; Chembo, Yanne K

    2014-01-01

    We report a theoretical study showing that rogue waves can emerge in whispering gallery mode resonators as the result of the chaotic interplay between Kerr nonlinearity and anomalous group-velocity dispersion. The nonlinear dynamics of the propagation of light in a whispering gallery-mode resonator is investigated using the Lugiato-Lefever equation, and we evidence a range of parameters where rare and extreme events associated with a non-gaussian statistics of the field maxima are observed.

  4. Fine Art Fair Held in September

    Institute of Scientific and Technical Information of China (English)

    Guo Yan

    2011-01-01

    "Ihe Art Beijing 2011· Fine Art Fair was held at the National Agricultural Exhibition Center in Beijing from September 15 to 18, 2011. Bringing together over 40 galleries and art institutions, this year's Fine Art Beijing offers a strong lineup. It presented an extraordinary exhibition of both classical and modem art from West and East. Compared with previous fairs, the exhibits at the Fine Art Beijing 2011 are richer in form and more diversified in style. Attending the fair,

  5. Reconfigurable Liquid Whispering Gallery Mode Microlasers

    Science.gov (United States)

    Yang, Shancheng; Ta, Van Duong; Wang, Yue; Chen, Rui; He, Tingchao; Demir, Hilmi Volkan; Sun, Handong

    2016-06-01

    Engineering photonic devices from liquid has been emerging as a fascinating research avenue. Reconfigurably tuning liquid optical micro-devices are highly desirable but remain extremely challenging because of the fluidic nature. In this article we demonstrate an all-liquid tunable whispering gallery mode microlaser floating on a liquid surface fabricated by using inkjet print technique. We show that the cavity resonance of such liquid lasers could be reconfigurably manipulated by surface tension alteration originated from the tiny concentration change of the surfactant in the supporting liquid. As such, remarkable sensing of water-soluble organic compounds with a sensitivity of free spectral range as high as 19.85 THz / (mol · mL-1) and the detectivity limit around 5.56 × 10-3 mol · mL-1 is achieved. Our work provides not only a novel approach to effectively tuning a laser resonator but also new insight into potential applications in biological, chemical and environmental sensing.

  6. CFD analysis of heat collection in a glazed gallery

    Energy Technology Data Exchange (ETDEWEB)

    Suarez, Maria Jose; Gutierrez, Antonio Jose; Pistono, Jorge; Blanco, Eduardo [Universidad de Oviedo, EDZE (Energia), Campus de Viesques, 33271 Gijon, Asturias (Spain)

    2011-01-15

    A glazed gallery in most old buildings is a space located on the first floor (and/or higher floors), facing south and almost fully glazed. As a result of the large glazed area and the orientation of the gallery, its temperature is warmer than the exterior and, in cold weather, it is used both as a space to insulate the adjacent rooms and as a leisure area, among other applications. In the framework of the ARFRISOL project (Bioclimatic Architecture and Solar Cooling), a demonstration container has been constructed in northern Spain (Asturias) which includes, among other bioclimatic elements, a glazed gallery. This gallery is considered as an element of Bioclimatic Architecture that enables solar radiation to be collected and the energy obtained to be used to support the building's air conditioning system. It consists of a south-facing glazed exterior wall, an intermediate space or passage and a partially glazed interior wall. Dampers located in the floor and ceiling of the intermediate space and connected to the air ducts enable the air circulating inside the gallery to be heated or cooled, depending on the season of the year, before it is further conditioned and conveyed to the rooms. This paper focuses on the three-dimensional numerical simulation of the airflow inside the gallery. The aim is to obtain a model to evaluate the thermal energy obtained in this architectural feature, integrating the effect of certain variables, such as the incident solar irradiation, the outdoor temperature and the air flow rate circulating in the gallery. (author)

  7. Dia de los Muertos: Images, Art, and Altar on display at Squires Student Center

    OpenAIRE

    Broughton, Sandra S.

    2008-01-01

    Dia de los Muertos: Images, Art, and Altar, an exhibition featuring photographs from Mexico, artifacts from the festival, and both traditional and contemporary altars, will be on display at the Perspective Gallery in Squires Student Center through Saturday, Nov. 8.

  8. Art + Bioéthique : expériences interdisciplinaires dans une galerie émergente

    Directory of Open Access Journals (Sweden)

    Lorrain, Aïda

    2016-09-01

    Full Text Available This review retraces the exhibition and the principle events of the collaborative project Art + Bioéthique. These were held at the Montreal gallery Espace Projet from February 25 to March 21, 2016.

  9. Art imitating high-energy physics

    CERN Multimedia

    Abbott, A

    2000-01-01

    Artists have been brought to CERN to learn about particle physics. In response they will each create an original piece of art which will be exhibited in "Signatures of the Invisible", a roadshow that will visit galleries across Europe next year (1/2 page).

  10. The Art of Buddhism. A Teacher's Guide.

    Science.gov (United States)

    Forsgren, Krista; Benskin, Elizabeth

    While the art of Buddhism has an enduring tradition throughout Asia, this teaching guide focuses on the cultures of three countries in which the Smithsonian's Freer and Sackler Galleries' collections are particularly strong: India, China, and Japan. The guide identifies grade level appropriateness for some lessons and activities. It contains 15…

  11. Qiao Xiaoguang’s paper-cut Art

    Institute of Scientific and Technical Information of China (English)

    MaFu

    2002-01-01

    Qiao Xiaoguang, a professor with the Central Academy of Fine Arts and director of the China Folk Paper-cut Research Society, recently held a solo exhibition at Beijing Century Art Gallery, showcasing some 30 new paper-cut works including "The Sun and the Old Man", "Auspicious Himalayas", "Bach’s Mass" and "Salute to Jorge Borges".

  12. De oorsprong van Art Nouveau - Het Bing imperium

    NARCIS (Netherlands)

    Weisberg, Gabriel P.; Becker, Edwin; Posseme, Evelyne

    2004-01-01

    The opening of Sigmund Bing's gallery L'Art Nouveau had been an eagerly expected event in the Paris art world throughout the latter half of 1895, since Bing first announced that he would be soon exhibiting artistic furniture. The doors finally opened on 26 December 1895 as visitors poured in at 22 R

  13. Portion of Enhanced 360-degree Gallery Pan

    Science.gov (United States)

    1997-01-01

    This is a sub-section of the 'geometrically improved, color enhanced' version of the 360-degree panorama heretofore known as the 'Gallery Pan', the first contiguous, uniform panorama taken by the Imager for Mars Pathfinder (IMP) over the course of Sols 8, 9, and 10. Different regions were imaged at different times over the three Martian days to acquire consistent lighting and shadow conditions for all areas of the panorama.The IMP is a stereo imaging system that, in its fully deployed configuration, stands 1.8 meters above the Martian surface, and has a resolution of two millimeters at a range of two meters. In this geometrically improved version of the panorama, distortion due to a 2.5 degree tilt in the IMP camera mast has been removed, effectively flattening the horizon.The IMP has color capability provided by 24 selectable filters -- twelve filters per 'eye'. Its red, green, and blue filters were used to take this image. The color was digitally balanced according to the color transmittance capability of a high-resolution TV at the Jet Propulsion Laboratory (JPL), and is dependent on that device. In this color enhanced version of the panorama, detail in surface features are brought out via changes to saturation and intensity, holding the original hue constant. A threshold was applied to avoid changes to the sky.At left is a Lander petal and a metallic mast which is a portion of the low-gain antenna. Misregistration in the antenna and other Lander features is due to parallax in the extreme foreground. Another Lander petal is at the right, showing the fully deployed forward ramp.Mars Pathfinder is the second in NASA's Discovery program of low-cost spacecraft with highly focused science goals. The Jet Propulsion Laboratory, Pasadena, CA, developed and manages the Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. JPL is a division of the California Institute of Technology (Caltech). The IMP was developed by the University of Arizona Lunar

  14. Art for All

    Directory of Open Access Journals (Sweden)

    Aksinja Kermauner

    2014-12-01

    Full Text Available The aim of spatial planning on the principles of “design for all” is to ensure that every individual, regardless of obstacle, can participate in the information society. It combines the principles of how as many people as possible could use products, services and systems without adjusting them. Why should we not transfer the concept of “design for all” also to other areas, such as the field of art? In this article we consider how a work of art, especially a two-dimensional one, could be adapted for blind or visually impaired visitors of a gallery or to a museum, and list what has already been done in this area. We also describe a textbook for teaching fine arts, adapted for blind and partially sighted students.

  15. The Strossmayer Gallery in Zagreb in the interwar period: from a utopian project to a renowned institution

    Directory of Open Access Journals (Sweden)

    Ljerka Dulibic

    2016-12-01

    Full Text Available The basis of today’s Strossmayer Gallery’s collection is the bequest of European Old Masters’ paintings collected by Bishop J. J. Strossmayer (1815-1905, with the fundamental desire to enlarge the scope of the Croatian cultural tradition through the appropriation of European elite culture. The meaning and function of the Gallery changed considerably over time. Before WWI, the Strossmayer Gallery was a utopian project in the sense that its mission was not only to fabricate what was seen to be a missing artistic past, but also to create the foundations for a future, native art. After WWI, with the formation of the Kingdom of Serbs, Croats and Slovenes, the national state was, at least in some form, realized, and the Gallery now turned its attention to concrete matters. In this paper, we follow the paths of intensive professionalization of the wide range of activities in the interwar period, retracing not only the history of museum presentation, or the history of Art History and of Art Conservation in Croatia, but also some traces of the general development of the dynamic, intertwined and significant relationship between Art History, Art Conservation and the museum. Il nucleo dell’odierna collezione della Galleria Strossmayer è costituito dal lascito delle opere dei maestri antichi europei raccolti dal vescovo J.J. Strossmayer (1815-1905, il cui scopo fondamentale fu di allargare la tradizione culturale croata con l’appropriazione della cultura elitaria europea. Con il passare del tempo, il signifi cato e la funzione della Galleria cambiò considerevolmente. Prima della Prima guerra mondiale la Galleria Strossmayer fu un progetto utopistico nel senso che la sua missione non era solo di riempire il vuoto visto come il passato artistico mancante, ma anche di creare le fondamenta per una futura arte locale. Dopo la guerra, con la formazione del Regno dei Serbi, Croati e Sloveni, lo stato nazionale fu, almeno in un certo senso, realizzato, e

  16. From GUI to Gallery: A Study of Online Virtual Environments.

    Science.gov (United States)

    Guynup, Stephen Lawrence

    This paper began as an attempt to clarify and classify the development of Web3D environments from 1995 to the present. In that process, important facts came to light. A large proportion of these sites were virtual galleries and museums. Second, these same environments covered a wide array of architectural interpretations and represented some of…

  17. Characterization of optical whispering gallery mode resonance and applications

    Science.gov (United States)

    Quan, Haiyong

    The whispering-gallery mode microdisk or microsphere resonators have supercompact size, high energy storage, very narrow resonance bandwidth, and high sensitivity. These appealing properties have attracted much attention in the realization of microlasers, narrow filters, optical switching, biosensing, high resolution spectroscopy, and so on. In this dissertation, the optical and energy transport phenomena of whispering-gallery mode resonance and its potentials in some optical sensing applications will be characterized. A 2D theoretical analysis is first presented based on the method of separation of variables and by deriving several appropriate and reasonable boundary conditions to describe the electrical field distribution at resonance modes. This analytical model can precisely predict the intrinsic resonance frequencies of isolated whispering-gallery mode resonators. To consider the coupling of light-delivery waveguides with resonators and investigate the resonance phenomena of the resonator-waveguide system and/or device, simulations using a Finite Element Method solver of Maxwell's equations are conducted. The results indicate the influences of the geometric dimensions, refractive indices, gap distances, and excitation wavelengths on the main characteristics of the resonance modes such as the quality factor Q, the finesse, the mode intensity, and so on. Furthermore, the gap effects are detailedly studied by both theoretical analysis and simulation modeling. The optimal gap for the maximum coupling efficiency and the optimum gap for the best sensing application of the whispering gallery mode resonators are introduced and discussed based on simulation data and theoretical estimations. Three prospective applications of the whispering gallery mode-based sensors are introduced and proof-of-concept studies are demonstrated. The design schemes and fabrication process of the on-chip resonance device made of the Si3N4/SiO2 material system using nanofabrication

  18. QUANTUM LANGEVIN THEORY OF WHISPERING-GALLERY-MODE MICROSPHERE LASER

    Institute of Scientific and Technical Information of China (English)

    CHAI JIN-HUA; LU YI-QUN; LEUNG PUI-TANG

    2000-01-01

    A quantum Langevin theory of whispering-gallery-mode microsphere laser theory is developed. The linear and nonlinear analysis are made for laser operation below and above the threshold. In these analysis, corresponding to the specific property of microsphere, the effect of inversion fluctuation is treated. The coherence functions of laser field are calculated, and the intensity, the amplitude fluctuation and the linewidth of the field are obtained, which are connected with the enhancement factor of whispering-gallery-mode microsphere. It is shown that the strong couple and strong pumping are useful for the amplification of intensity and the decrease of linewidth below the threshold. It is also shown that, for the laser action above threshold, the variances of photon number and the linewidth of internal field are related to the enhancement factor and the square of the enhancement factor, respectively.

  19. Low-Q whispering gallery modes in anisotropic metamaterial shells

    CERN Document Server

    Díaz-Rubio, Ana; Torrent, Daniel; Sánchez-Dehesa, José

    2013-01-01

    Anisotropic and inhomogeneous metamaterial shells are studied in order to exploit all their resonant mode richness. These multilayer structures are based on a cylindrical distribution of radially dependent constitutive parameters including an inner void cavity. Shell, cavity and whispering gallery modes are characterized, and special attention is paid to the latter ones. The whispering gallery modes are created at the boundary layers of the shell with the background and energy localization is produced with highly radiative characteristics. These low-Q resonant states have frequencies that are independent of the shell thickness. However, their quality factors can be controlled by the number of layers forming the shell, which allows confining electromagnetic waves at the interface layers (internal or external), and make them suitable for the harvesting of electromagnetic energy.

  20. MULTIMODE THEORY OF WHISPERING GALLERY-MODE MICROSPHERE LASER

    Institute of Scientific and Technical Information of China (English)

    CHAI JIN-HUA; LU YI-QUN; LEUNG PUI-TANG

    2000-01-01

    A multimode theory of whispering-gallery-mode microsphere laser is developed based on the linear and nonlinear semiclassical theory of the microsphere laser. The average photon-number of each lasing mode and the pumping level requirement for multimode coexistence are derived. The comparison between the theory and experimental results shows that the theory can be used to treat the practical problems on microsphere laser.

  1. Phone-sized whispering-gallery microresonator sensing system

    Science.gov (United States)

    Xu, Xiangyi; Jiang, Xuefeng; Zhao, Guangming; Yang, Lan

    2016-11-01

    We develop a compact whispering-gallery-mode (WGM) sensing system by integrating multiple components, including a tunable laser, a temperature controller, a function generator, an oscilloscope, a photodiode detector, and a testing computer, into a phone-sized embedded system. We demonstrate a thermal sensing experiment by using this portable system. Such a system successfully eliminates bulky measurement equipment required for characterizing optical resonators and will open up new avenues for practical sensing applications by using ultra-high Q WGM resonators.

  2. Phone-sized whispering-gallery microresonator sensing system

    CERN Document Server

    Xu, Xiangyi; Zhao, Guangming; Yang, Lan

    2016-01-01

    We develop a compact whispering-gallery-mode (WGM) sensing system by integrating multiple components, including a tunable laser, a temperature controller, a function generator, an oscilloscope, a photodiode detector, and a testing computer, into a phone-sized embedded system. We demonstrate a thermal sensing experiment by using this portable system. Such a system successfully eliminates bulky measurement equipment required for characterizing optical resonators and will open up new avenues for practical sensing applications by using ultra-high Q WGM resonators.

  3. Modern Masters from the Smithsonian American Art Museum

    Science.gov (United States)

    Johnson, Mark M.

    2009-01-01

    A new traveling exhibition and catalogue produced by the Smithsonian's American Art Museum features works by 31 artists from the United States who came to maturity in the mid-20th century. These artists have become the most significant and influential artists over the past 50 years as their works adorn the modern galleries of hundreds of museums.…

  4. Artful creation

    DEFF Research Database (Denmark)

    Darsø, Lotte

    2013-01-01

    An introduction to the field of Arts-in-Business outlining 4 different approaches: 1) Art as decoration, 2) Art as intertainment, 3) Arts as instrumental, 4) Art as strategic......An introduction to the field of Arts-in-Business outlining 4 different approaches: 1) Art as decoration, 2) Art as intertainment, 3) Arts as instrumental, 4) Art as strategic...

  5. Globalization of markets for contemporary art: why local ties remain dominant in Amsterdam and Berlin

    NARCIS (Netherlands)

    O. Velthuis

    2013-01-01

    Drawing on both qualitative and quantitative data, this article explores the extent to which Western art markets are globalized by focusing on the nationality of contemporary artists represented by art galleries in Amsterdam and Berlin. Far from the borderless world presupposed in the globalization

  6. Charm of Cotton Art COTTON USA: Naturally Color Your Life: Cotton & Patchwork Exhibition

    Institute of Scientific and Technical Information of China (English)

    Flora Zhao

    2012-01-01

    The grand opening of Cotton Council International's (CCI) finale event Naturally Color YourLife: Cotton & Patchwork by CO-FFON USA took place in Beijing's 798 Art Bridge Gallery on May 25th, 2012. The exhibition was a perfect marriage of the constant pursuit of traditional patchwork art with the fantastic imagination of modern design.

  7. The influence of genetics on contemporary art.

    Science.gov (United States)

    Nelkin, Dorothy; Anker, Suzanne

    2002-12-01

    Contemporary visual artists are incorporating genetic concepts into their work, and this work has become prominently featured in numerous museum and gallery exhibitions. Such art uses visual images that represent the language of genomics, the values affected by genetic understanding of the body and the implications of bioengineering. Here, we present various examples of how artists depict aspects of genetics as cultural icons and symbols; in particular, their focus on DNA as information and on the commercialization of genetics research material.

  8. Quantum Light from a Whispering-Gallery-Mode Disk Resonator

    DEFF Research Database (Denmark)

    Fürst, J. U.; Strekalov, D. V.; Elser, D.;

    2011-01-01

    Optical parametric down-conversion has proven to be a valuable source of nonclassical light. The process is inherently able to produce twin-beam correlations along with individual intensity squeezing of either parametric beam, when pumped far above threshold. Here, we present for the first time...... the direct observation of intensity squeezing of -1.2 dB of each of the individual parametric beams in parametric down-conversion by use of a high quality whispering-gallery-mode disk resonator. In addition, we observed twin-beam quantum correlations of -2.7 dB with this cavity. Such resonators feature...

  9. Microtorus a High Finesse Microcavity with Whispering-Gallery Modes

    CERN Document Server

    Ilchenko, V S; Yao, X S; Maleki, L; Ilchenko, Vladimir S.; Gorodetsky, Michael L.; Maleki, Lute

    2000-01-01

    We have demonstrated a 165 micron oblate spheroidal microcavity with free spectral range 383.7 GHz (3.06nm), resonance bandwidth 25 MHz (Q ~ 10^7) at 1550nm, and finesse F > 10^4. The highly oblate spheroidal dielectric microcavity combines very high Q-factor, typical of microspheres, with vastly reduced number of excited whispering-gallery (WG) modes (by two orders of magnitude). The very large free spectral range in the novel microcavity - few hundred instead of few GigaHertz in typical microspheres - is desirable for applications in spectral analysis, narrow-linewidth optical and RF oscillators, and cavity QED.

  10. Method of fabricating a whispering gallery mode resonator

    Science.gov (United States)

    Savchenkov, Anatoliy A. (Inventor); Matkso, Andrey B. (Inventor); Iltchenko, Vladimir S. (Inventor); Maleki, Lute (Inventor)

    2011-01-01

    A method of fabricating a whispering gallery mode resonator (WGMR) is provided. The WGMR can be fabricated from a particular material, annealed, and then polished. The WGMR can be repeatedly annealed and then polished. The repeated polishing of the WGMR can be carried out using an abrasive slurry. The abrasive slurry can have a predetermined, constant grain size. Each subsequent polishing of the WGMR can use an abrasive slurry having a grain size that is smaller than the grain size of the abrasive slurry of the previous polishing iteration.

  11. Optical combs with a crystalline whispering gallery mode resonator

    CERN Document Server

    Savchenkov, Anatoliy A; Ilchenko, Vladimir S; Solomatine, Iouri; Seidel, David; Maleki, Lute

    2008-01-01

    We report on the experimental demonstration of a tunable monolithic optical frequency comb generator. The device is based on the four-wave mixing in a crystalline calcium fluoride whispering gallery mode resonator. The frequency spacing of the comb is given by an integer number of the free spectral range of the resonator. We select the desired number by tuning the pumping laser frequency with respect to the corresponding resonator mode. We also observe interacting optical combs and high-frequency hyperparametric oscillation, depending on the experimental conditions. A potential application of the comb for generating narrowband frequency microwave signals is demonstrated.

  12. High-Q silk fibroin whispering gallery microresonator

    Science.gov (United States)

    Xu, Linhua; Jiang, Xuefeng; Zhao, Guangming; Ma, Ding; Tao, Hu; Liu, Zhiwen; Omenetto, Fiorenzo G.; Yang, Lan

    2016-09-01

    We have experimentally demonstrated an on-chip all-silk fibroin whispering gallery mode microresonator by using a simple molding and solution-casting technique. The quality factors of the fabricated silk protein microresonators are up to 10^5. A high-sensitivity thermal sensor was realized in this silk fibroin microtoroid with sensitivity of 1.17 nm/K, 8 times higher than previous WGM resonator based thermal sensors. This opens the way to fabricate biodegradable and biocompatible protein based microresonators on a flexible chip for biophotonics applications.

  13. Optical sum-frequency generation in whispering gallery mode resonators

    CERN Document Server

    Strekalov, Dmitry V; Huang, Yu-Ping; Kumar, Prem

    2013-01-01

    We demonstrate sum-frequency generation in a nonlinear whispering gallery mode resonator between a telecom wavelength and the Rb D2 line, achieved through natural phase matching. Due to the strong optical field confinement and ultra high Q of the cavity, we achieve a 1000-fold enhancement in the conversion efficiency compared to existing waveguide-based devices. The experimental data are in agreement with the nonlinear dynamics and phase matching theory in the spherical geometry employed. The experimental and theoretical results point to a new platform to manipulate the color and quantum states of light waves toward applications such as atomic memory based quantum networking and logic operations with optical signals.

  14. Interferometric detection of mode splitting for whispering gallery mode biosensors

    CERN Document Server

    Knittel, Joachim; Lee, Kwan H; Bowen, Warwick P

    2010-01-01

    Sensors based on whispering gallery mode resonators can detect single nanoparticles and even single molecules. Particles attaching to the resonator induce a doublet in the transmission spectrum which provides a self-referenced detection signal. However, in practice this spectral feature is often obscured by the width of the resonance line which hides the doublet structure. This happens particularly in liquid environments that reduce the effective Q factor of the resonator. In this paper we demonstrate an interferometric set-up that allows the direct detection of the hidden doublet and thus provides a pathway for developing practical sensor applications.

  15. Detection limits in plasmonic whispering gallery mode biosensors

    CERN Document Server

    Swaim, Jon D; Bowen, Warwick P

    2011-01-01

    We analyze a whispering gallery mode biosensor with a metallic nanorod bound to its surface. It is found that a localized surface plasmon resonance in the nanorod can reduce the optical mode volume of the resonator by as much as four orders of magnitude via a local enhancement of the electric field, thus improving the detection sensitivity. Optical frequency shifts as large as 15 MHz are predicted for typical proteins and, for typical experimental parameters, the biosensor is predicted to be limited by laser frequency noise, leading to a minimum detectable polarizability on the order of 10 cubic angstroms.

  16. Women’s Art and Women Artists in Cultural Change

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    ON March 3rd, 1998, an exhibition titled "Century · Women" drew up its curtain at the China Arts Gallery in Beijing, and attracted a vast number of visitors with its large scale, historical overview, and representation of a great number of painters with various styles. While people strolled in the gallery, a lively forum on the topic of "Visual Angle of Gender: Women’s Arts and Women Artists in Cultural Change" was also taking place in Beijing. The purpose of the forum was to corroborate the academic value of the exhibition, as well as to analyze the cultural significance of women’s art through the exploration of the history and present situation of Chinese women’s art, Over 30 scholars and artists presented speeches on the topic; the audience numbered in the hundreds.

  17. Cylindrical Beam Propagation Modelling of Perturbed Whispering-Gallery Mode Microcavities

    CERN Document Server

    Shirazi, Mohammad Amin Cheraghi; Vincent, Serge; Lu, Tao

    2013-01-01

    We simulate light propagation in perturbed whispering-gallery mode microcavities using a two-dimensional finite-difference beam prop- agation method in a cylindrical coordinate system. Optical properties of whispering-gallery microcavities perturbed by polystyrene nanobeads are investigated through this formulation. The light perturbation as well as quality factor degradation arising from cavity ellipticity are also studied.

  18. Directly mapping whispering gallery modes in a microsphere through modal coupling and directional emission

    Institute of Scientific and Technical Information of China (English)

    Chunhua Dong; Yunfeng Xiao; Yong Yang; Zhengfu Han; Guangcan Guo; Lan Yang

    2008-01-01

    @@ We fabricate slightly deformed fused-silica microspheres in which whispering gallery modes possess remarkably directional escape emission from the microsphere boundary. With efficient flee-space excitation and collection, the lateral spatial distribution of whispering gallery modes with different azimuthal mode numbers, rn, is directly observed through modal coupling and directional emission. Excellent agreement with theory is obtained.

  19. Flow sensor using a hollow whispering gallery mode microlaser

    Science.gov (United States)

    Ward, Jonathan M.; Yang, Yong; Chormaic, Síle N.

    2016-03-01

    Flow sensing using the concept of a hot whispering gallery microlaser is presented. Silica microcapillaries or microbubbles, coated with a layer of erbium:ytterbium (Er:Yb) doped phosphate laser glass, result in a hollow, microbottle-shaped laser geometry. The Er:Yb doped glass outer layer is pumped at 980 nm via a tapered optical fiber and whispering gallery mode (WGM) lasing is recorded at 1535 nm. When gas passes through the capillary, the WGMs shift toward shorter wavelengths due to the cooling effect of the fluid flow. In this way, thermal tuning of the lasing modes over 70 GHz can be achieved. The output end of the capillary is connected to a mass flow sensor and the WGM shift rate as a function of flow rate and pump laser power is measured, with the results fitted using hot wire anemometry theory. Flow sensing can also be realized when the cavity is passively probed at 780 nm, with the estimated Q-factor of the WGMs being in excess of 105.

  20. Constraining the age of rock art by dating a rockfall event using sediment and rock-surface luminescence dating techniques

    DEFF Research Database (Denmark)

    Chapot, Melissa; Sohbati, Reza; Murray, A.S.

    2012-01-01

    Optically stimulated luminescence (OSL) is used to determine the age of a rockfall event that removed part of the pictograph figures at the Great Gallery rock art panel in Canyonlands National Park, Utah, USA. Analyses from the outer millimeter of the buried surface of a rockfall boulder and quar...... rock art with a controversial and unknown origin.......Optically stimulated luminescence (OSL) is used to determine the age of a rockfall event that removed part of the pictograph figures at the Great Gallery rock art panel in Canyonlands National Park, Utah, USA. Analyses from the outer millimeter of the buried surface of a rockfall boulder and quartz...

  1. Beijing Experimental Electronic Musicians on the Phenomenon of Commercialization and Tourism in the Contemporary Chinese Art

    Directory of Open Access Journals (Sweden)

    Matic Urbanija

    2014-12-01

    Full Text Available The article provides opinions of some Beijing experimental electronic musicians about the situation of contemporary art in China and in the world, primarily about the background of the so called Christmas performance in Art District 798's gallery UCCA in Beijing. This was a sort of protest against destroying art with commercialization as the only measure of art gallery's success. The article first describes the situation of contemporary art in the world at the beginning of 21st century as it is described in Julian Stallabrass' book Art Incorporated. It can be deduced from the words of experimental electronic musicians in Beijing that the situation is similar in China. During the debate about the Christmas performance in UCCA gallery, a problem with galleries was emphasize. These became more similar to tourist venues than places for enriching one's thoughts and awareness about the world surrounding us, through artwork. Therefore, the Christmas performance tried to express this sentiment. It offered visitors a tourist show brought to the point of absurd. The employees and the leader of UCCA couldn't comprehend the symbolic meaning of this happening, which, symbolically, took place on Christmas, the most commercialized holiday in the West as well as in China.

  2. Predicting the whispering gallery mode spectra of microresonators

    CERN Document Server

    Hall, Jonathan M M; Henderson, Matthew R; Francois, Alexandre; Reynolds, Tess; Riesena, Nicolas; Monro, Tanya M

    2015-01-01

    The whispering gallery modes (WGMs) of optical resonators have prompted intensive research efforts due to their usefulness in the field of biological sensing, and their employment in nonlinear optics. While much information is available in the literature on numerical modeling of WGMs in microspheres, it remains a challenging task to be able to predict the emitted spectra of spherical microresonators. Here, we establish a customizable Finite- Difference Time-Domain (FDTD)-based approach to investigate the WGM spectrum of microspheres. The simulations are carried out in the vicinity of a dipole source rather than a typical plane-wave beam excitation, thus providing an effective analogue of the fluorescent dye or nanoparticle coatings used in experiment. The analysis of a single dipole source at different positions on the surface or inside a microsphere, serves to assess the relative efficiency of nearby radiating TE and TM modes, characterizing the profile of the spectrum. By varying the number, positions and a...

  3. Elementary modes of coupled oscillators as whispering-gallery microresonators

    Science.gov (United States)

    Banerjee, Rabin; Mukherjee, Pradip

    2015-10-01

    We obtain the elementary modes of a system of parity-time reversal (PT)-symmetric coupled oscillators with balanced loss and gain. These modes are used to give a physical picture of the phase transition recently reported [C. M. Bender, M. Gianfreda, B. Peng, S. K. Özdemir and L. Yang, Phys. Rev. A 88, 062111 (2013); L. Yang, S. K. Özdemir and B. Peng, 12th Int. Workshop and Conf. Pseudo-Hermitian Hamiltonians in Quantum Physics, Istanbul, Turkey, July 2013; B. Peng, S. K. Özdemir, F. Lei, F. Monifi, M. Gianfreda, G. L. Long, S. Fan, F. Nori, C. M. Bender and L. Yang, Nat. Phys. 10, 394 (2014)] in experiments with whispering-gallery microresonators.

  4. Detecting single viruses and nanoparticles using whispering gallery microlasers

    CERN Document Server

    He, Lina; Zhu, Jiangang; Kim, Woosung; Yang, Lan

    2011-01-01

    Detection and characterization of individual nano-scale particles, virions, and pathogens are of paramount importance to human health, homeland security, diagnostic and environmental monitoring[1]. There is a strong demand for high-resolution, portable, and cost-effective systems to make label-free detection and measurement of individual nanoparticles, molecules, and viruses [2-6]. Here, we report an easily accessible, real-time and label-free detection method with single nanoparticle resolution that surpasses detection limit of existing micro- and nano-photonic devices. This is achieved by using an ultra-narrow linewidth whispering gallery microlaser, whose lasing line undergoes frequency splitting upon the binding of individual nano-objects. We demonstrate detection of polystyrene and gold nanoparticles as small as 15 nm and 10 nm in radius, respectively, and Influenza A virions by monitoring changes in self-heterodyning beat note of the split lasing modes. Experiments are performed in both air and aqueous ...

  5. Nonlinear and Quantum Optics with Whispering Gallery Resonators

    CERN Document Server

    Strekalov, Dmitry V; Matsko, Andrey B; Schwefel, Harald G L; Leuchs, Gerd

    2016-01-01

    Optical Whispering Gallery Modes (WGMs) derive their name from a famous acoustic phenomenon of guiding a wave by a curved boundary observed nearly a century ago. This phenomenon was later realized to have a rather general nature, equally applicable to sound and all other waves, but in particular also to electromagnetic waves ranging from radio frequencies to ultraviolet light. Very high quality factors of optical WGM resonators persisting in a wide wavelength range, their small mode volume, and tunable in- and out- coupling make them exceptionally efficient for nonlinear optical applications. Nonlinear optics facilitates interaction of photons with each other and with other physical systems, and is of prime importance in quantum optics. In this paper we review numerous applications of WGM resonators in nonlinear and quantum optics. We outline the current areas of interest, summarize progress, highlight difficulties, and discuss possible future development trends in these areas.

  6. Nonlinear and quantum optics with whispering gallery resonators

    Science.gov (United States)

    Strekalov, Dmitry V.; Marquardt, Christoph; Matsko, Andrey B.; Schwefel, Harald G. L.; Leuchs, Gerd

    2016-12-01

    Optical whispering gallery modes (WGMs) derive their name from a famous acoustic phenomenon of guiding a wave by a curved boundary observed nearly a century ago. This phenomenon has a rather general nature, equally applicable to sound and all other waves. It enables resonators of unique properties attractive both in science and engineering. Very high quality factors of optical WGM resonators persisting in a wide wavelength range spanning from radio frequencies to ultraviolet light, their small mode volume, and tunable in- and out- coupling make them exceptionally efficient for nonlinear optical applications. Nonlinear optics facilitates interaction of photons with each other and with other physical systems, and is of prime importance in quantum optics. In this paper we review numerous applications of WGM resonators in nonlinear and quantum optics. We outline the current areas of interest, summarize progress, highlight difficulties, and discuss possible future development trends in these areas.

  7. Highly Efficient Boundary Element Analysis of Whispering Gallery Microcavities

    CERN Document Server

    Pan, Leyuan

    2014-01-01

    We demonstrate that the efficiency of the boundary element whispering gallery microcavity analysis can be improved by orders of magnitude with the inclusion of Fresnel approximation. Using this formulation, simulation of a microdisk with wave-number-radius product as large as $kR\\approx8,000$ was demonstrated in contrast to a previous record of $kR\\approx100$. In addition to its high accuracy on computing the modal field distribution and resonance wavelength, this method yields a relative error of $10%$ in calculating the quality factor as high as $10^{11}$ through a direct root searching method where the conventional boundary element method failed to achieve. Finally, quadrupole shaped cavities and double disks as large as $100 {\\mu}m$ in diameter were modeled by employing as few as $512$ boundary elements whilst the simulation of such large cavities using conventional boundary element method were not reported previously.

  8. Video gallery of educational lectures integrated in faculty's portal

    Directory of Open Access Journals (Sweden)

    Jaroslav Majerník

    2013-05-01

    Full Text Available This paper presents a web based educational video-clips exhibition created to share various archived lectures for medical students, health care professionals as well as for general public. The presentation of closely related topics was developed as video gallery and it is based solely on free or open source tools to be available for wide academic and/or non-commercial use. Even if the educational video records can be embedded in any websites, we preferred to use our faculty’s portal, which should be a central point to offer various multimedia educational materials. The system was integrated and tested to offer open access to infectology lectures that were captured and archived from live-streamed sessions and from videoconferences.

  9. Structural Protein-based Flexible Whispering Gallery Mode Resonators

    CERN Document Server

    Yilmaz, Huzeyfe; Shreiner, Robert; Szwejkowski, Chester J; Jung, Huihun; Hopkins, Patrick; Ozdemir, Sahin Kaya; Yang, Lan; Demirel, Melik C

    2016-01-01

    Nature provides a set of solutions for photonic structures that are finely tuned, organically diverse and optically efficient. Exquisite knowledge of structure-property relationships in proteins aids in the design of materials with desired properties for building devices with novel functionalities, which are difficult to achieve or previously unattainable. Recent bio-inspired photonic platforms made from proteinaceous materials lay the groundwork for many functional device applications, such as electroluminescence in peptide nucleic acids1, multiphoton absorption in amyloid fibers2 and silk waveguides and inverse opals3-5. Here we report whispering-gallery-mode (WGM) microresonators fabricated entirely from semi-crystalline structural proteins (i.e., squid ring teeth, SRT, from Loligo vulgaris and its recombinant, and silk from Bombyx mori) with unconventional thermo-optic response. We present a striking example of how small modifications at the molecular level lead to structural changes and alter macroscopic...

  10. Polarization-selective out-coupling of whispering gallery modes

    CERN Document Server

    Sedlmeir, Florian; Vogl, Ulrich; Zeltner, Richard; Schunk, Gerhard; Strekalov, Dmitry V; Marquardt, Christoph; Leuchs, Gerd; Schwefel, Harald G L

    2016-01-01

    Whispering gallery mode (WGM) resonators are an important building block for linear, nonlinear and quantum optical experiments. In such experiments, independent control of coupling rates to different modes can lead to improved conversion efficiencies and greater flexibility in generation of non-classical states based on parametric down conversion. In this work, we introduce a scheme which enables selective out-coupling of WGMs belonging to a specific polarization family, while the orthogonally polarized modes remain largely unperturbed. Our technique utilizes material birefringence in both the resonator and coupler such that a negative (positive) birefringence allows selective coupling to TE (TM) polarized WGMs. We formulate a new coupling condition suitable for describing the case where the refractive indices of the resonator and the coupler are almost the same, from which we derive the criterion for polarization-selective coupling. We experimentally demonstrate our proposed method using a lithium niobate di...

  11. Broadband second harmonic generation in whispering gallery mode resonators

    CERN Document Server

    Lin, Guoping; Strekalov, Dmitry V; Yu, Nan

    2013-01-01

    Optical frequency conversion processes in nonlinear materials are limited in wavelength by the accessible phase matching and the required high pump powers. In this letter, we report a novel broadband phase matching (PM) technique in high quality factor (Q) whispering gallery mode (WGM) resonators made of birefringent crystalline materials. This technique relies on two interacting WGMs, one with constant and the other with spatially oscillating phase velocity. Thus, phase matching occurs cyclically. The technique can be implemented with a WGM resonator with its disk plane parallel to the optic axis of the crystal. With a single beta barium borate (BBO) resonator in that configuration, we experimentally demonstrated efficient second harmonic generation (SHG) to harmonic wavelengths from 780 nm in the near infrared to 317 nm in the ultraviolet (UV). The observed SHG conversion efficiency is as high as 4.6% (mW)-1. This broadband PM technique opens a new way for nonlinear optics applications in WGM resonators. Th...

  12. How to use The National Gallery as a cross curricular approach to weather and climate studies at primary level.

    Science.gov (United States)

    Hansen, P. J. K.

    2009-09-01

    How to use The National Gallery as a cross curricular approach to weather and climate studies at primary level. Pål J. Kirkeby Hansen Faculty of Education and International Studies, Oslo University College (PalKirkeby.Hansen@lui.hio.no) Weather and climate are topics in natural science and geography in primary and secondary education in most countries. The pupils are often doing own weather observations and measurements and are presenting the results oral, by posters or with digital aids. They also use the Internet with all its relevant resources in their studies to develop vocabulary, practical and conceptual knowledge. Knowledge about weather and climate is parts of liberal education and could be projected to other topics in science and to topics in other subjects, for instance: history, social geography, literature and arts. This article reports from a case study in grade 3 classes (age 9 year) during their Weather Week. Their science teacher was, quite untypical, also educated in art history. She arranged a visited to The National Gallery with the double agenda: 1. To introduce the pupils to Norwegian canon paintings from the national romantic period, our so-called "golden age”. 2. To look for and discuss weather elements in this paintings. For one hour the museum curator guided the pupils around the water cycle by using the paintings. While the pupils' own observations of weather, clouds and wind and measurements of temperature and precipitation during the Weather Week only are point checks, the guided tour in The National Gallery gave literally "the whole picture” of the Norwegian weather and climate and of the water cycle. During the tour, the curator constantly invited the pupils to tell about and discuss what weather and water elements they were looking at when standing in front of a painting. The pupils were responsive and interested all the time. Back at school, they demonstrated that they had learned much about both weather elements, the water

  13. Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

    Science.gov (United States)

    Coillet, Aurélien; Henriet, Rémi; Phan Huy, Kien; Jacquot, Maxime; Furfaro, Luca; Balakireva, Irina; Larger, Laurent; Chembo, Yanne K.

    2013-01-01

    Microwave photonics systems rely fundamentally on the interaction between microwave and optical signals. These systems are extremely promising for various areas of technology and applied science, such as aerospace and communication engineering, sensing, metrology, nonlinear photonics, and quantum optics. In this article, we present the principal techniques used in our lab to build microwave photonics systems based on ultra-high Q whispering gallery mode resonators. First detailed in this article is the protocol for resonator polishing, which is based on a grind-and-polish technique close to the ones used to polish optical components such as lenses or telescope mirrors. Then, a white light interferometric profilometer measures surface roughness, which is a key parameter to characterize the quality of the polishing. In order to launch light in the resonator, a tapered silica fiber with diameter in the micrometer range is used. To reach such small diameters, we adopt the "flame-brushing" technique, using simultaneously computer-controlled motors to pull the fiber apart, and a blowtorch to heat the fiber area to be tapered. The resonator and the tapered fiber are later approached to one another to visualize the resonance signal of the whispering gallery modes using a wavelength-scanning laser. By increasing the optical power in the resonator, nonlinear phenomena are triggered until the formation of a Kerr optical frequency comb is observed with a spectrum made of equidistant spectral lines. These Kerr comb spectra have exceptional characteristics that are suitable for several applications in science and technology. We consider the application related to ultra-stable microwave frequency synthesis and demonstrate the generation of a Kerr comb with GHz intermodal frequency. PMID:23963358

  14. Rarefying Spectra of Whispering-Gallery-Mode Resonators

    Science.gov (United States)

    Savchenkov, Anatoliy; Matsko, Andrey; Strekalov, Dmitri; Iltchenko, Vladimir; Maleki, Lute

    2007-01-01

    A method of cleaning the mode spectra of whispering-gallery-mode (WGM) optical resonators has been devised to make such resonators more suitable for use as narrow-band optical filters. The method applies, more specifically, to millimeter- sized whispering-gallery-mode optical resonators that are made of crystalline electro-optical materials and have ultrahigh values of the resonance quality factor (Q). The mode spectrum of such a resonator is typically dense, consisting of closely spaced families of modes; as such, the spectrum is not well suited for narrow-band filtering, in which there is a need for strong rejection of side modes. Cleaning as used here signifies rarefying the spectrum so that what remains consists mostly of a single desired family of modes or, at worst, a few mode families that are more widely spaced in frequency than are the mode families in the original, non-rarefied spectrum. The spectrum-cleaning method exploits the fact that various WGM mode families occupy various positions near the equator at the rim of a resonator disk. In this method, a damper in the form of a prism or other polished piece of material having an index of refraction greater than that of the resonator material is placed in contact with the rim of the resonator at such a position that the Qs of most or all of the undesired mode families are greatly reduced while the Q of the desired mode family is reduced by only a tolerably small amount. In an alternative method that has been considered, the mode spectrum would be cleaned through special design of the shape of the rim, but fabrication of the rim in a special shape is a complicated task. The advantage of the present method, relative to the alternative method, is that special shaping of the rim is not necessary and the damping prism can be emplaced after the resonator has been fabricated.

  15. Microwave photonics systems based on whispering-gallery-mode resonators.

    Science.gov (United States)

    Coillet, Aurélien; Henriet, Rémi; Phan Huy, Kien; Jacquot, Maxime; Furfaro, Luca; Balakireva, Irina; Larger, Laurent; Chembo, Yanne K

    2013-08-05

    Microwave photonics systems rely fundamentally on the interaction between microwave and optical signals. These systems are extremely promising for various areas of technology and applied science, such as aerospace and communication engineering, sensing, metrology, nonlinear photonics, and quantum optics. In this article, we present the principal techniques used in our lab to build microwave photonics systems based on ultra-high Q whispering gallery mode resonators. First detailed in this article is the protocol for resonator polishing, which is based on a grind-and-polish technique close to the ones used to polish optical components such as lenses or telescope mirrors. Then, a white light interferometric profilometer measures surface roughness, which is a key parameter to characterize the quality of the polishing. In order to launch light in the resonator, a tapered silica fiber with diameter in the micrometer range is used. To reach such small diameters, we adopt the "flame-brushing" technique, using simultaneously computer-controlled motors to pull the fiber apart, and a blowtorch to heat the fiber area to be tapered. The resonator and the tapered fiber are later approached to one another to visualize the resonance signal of the whispering gallery modes using a wavelength-scanning laser. By increasing the optical power in the resonator, nonlinear phenomena are triggered until the formation of a Kerr optical frequency comb is observed with a spectrum made of equidistant spectral lines. These Kerr comb spectra have exceptional characteristics that are suitable for several applications in science and technology. We consider the application related to ultra-stable microwave frequency synthesis and demonstrate the generation of a Kerr comb with GHz intermodal frequency.

  16. Fungus symbionts colonizing the galleries of the ambrosia beetle Platypus quercivorus.

    Science.gov (United States)

    Endoh, Rikiya; Suzuki, Motofumi; Okada, Gen; Takeuchi, Yuko; Futai, Kazuyoshi

    2011-07-01

    Isolations were made to determine the fungal symbionts colonizing Platypus quercivorus beetle galleries of dead or dying Quercus laurifolia, Castanopsis cuspidata, Quercus serrata, Quercus crispula, and Quercus robur. For these studies, logs from oak wilt-killed trees were collected from Kyoto Prefecture, Japan. Fungi were isolated from the: (1) entrances of beetle galleries, (2) vertical galleries, (3) lateral galleries, and (4) the larval cradle of P. quercivorus in each host tree. Among the fungus colonies which appeared on YM agar plates, 1,219 were isolated as the representative isolates for fungus species inhabiting in the galleries based on their cultural characteristics. The validity of the visual classification of the fungus colonies was checked and if necessary properly corrected using microsatellite-primed PCR fingerprints. The nucleotide sequence of the D1/D2 region of the large subunit nuclear rRNA gene detected 38 fungus species (104 strains) of which three species, i.e., Candida sp. 3, Candida kashinagacola (both yeasts), and the filamentous fungus Raffaelea quercivora were isolated from all the tree species. The two yeasts were most prevalent in the interior of galleries, regardless of host tree species, suggesting their close association with the beetle. A culture-independent method, terminal restriction fragment length polymorphism (T-RFLP) analysis was also used to characterize the fungus flora of beetle galleries. T-RFLP patterns showed that yeast species belonging to the genus Ambrosiozyma frequently occurred on the gallery walls along with the two Candida species. Ours is the first report showing the specific fungi inhabiting the galleries of a platypodid ambrosia beetle.

  17. ANOUSH ABRAR & AIMéE HOVING -WE'RE HEADING FOR ARTS%要走到艺术

    Institute of Scientific and Technical Information of China (English)

    草雉

    2007-01-01

    @@ "We want to be creative, innovative, that our fashion pictures can be interpreted as art, and that art can be interpreted as fashion. When one of our fashion pictures is exposed in a gallery we feel that we have accomplished what we are looking for."

  18. COMMON GROUNDS BETWEEN PRINTMAKING AND STREET ART

    Directory of Open Access Journals (Sweden)

    Burcak Balamber

    2016-09-01

    Full Text Available Graffiti movement, born as a result of an effort of the youth, who felt themselves socially excluded and alone, to show their existence and identities during the 1960s, expanded its scope owing to street based artists such as Keith Haring and Jean-Michel Basquiat entering to the galleries, and transformed into an artistic manner of expression having aesthetic concerns by adopting a more inclusive definition ‘street art’. During this transformation of street art,street artists experimented with various methods from many different disciplines and hence created works in a wide range of varieties in terms of plastic and artistic values. Among these disciplines, printmakinghastaken its own place in street artas a discipline thatdeeply influenced street artists.Printmaking has fascinated street artists and become a part of their production process, not only with its philosophy sharing common grounds with street art and advantages in terms of its tecnical practices but also its unique plastic and linear values.Thanks to the opportunities of printmaking, street art has succeeded creating a tremendous impression worldwide, and even positioned itself into today’s greatest museums/gallery halls. This article aims to show how and in what way printmaking has influenced street art being in a transformation since the 1960s, and to put an emphasis on theimportance of printmaking on today’s street art.

  19. TeraHz tuning of whispering gallery modes in a PDMS, stand-alone, stretchable microsphere

    CERN Document Server

    Madugani, Ramgopal; Ward, Jonathan M; Riordan, John Daniel; Coppola, Sara; Vespini, Veronica; Grilli, Simonetta; Finizio, Andrea; Ferraro, Pietro; Chormaic, Síle Nic

    2012-01-01

    We report on tuning the optical whispering gallery modes in a poly dimethyl siloxane-based (PDMS) microsphere resonator by more than a THz. The PDMS microsphere system consists of a solid spherical resonator directly formed with double stems on either side. The stems act like tie-rods for simple mechanical stretching of the microresonator over tens of microns, resulting in tuning of the whispering gallery modes by one free spectral range. Further investigations demonstrate that the whispering gallery mode shift has a higher sensitivity (0.13 nm/{\\mu}N) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.

  20. Fing Art fair (c)eld in september

    Institute of Scientific and Technical Information of China (English)

    Guo Yan

    2011-01-01

    The Art Beijing 2011 · Fine Art Fair was held at the National Agricultural Exhibition Center in Beijing from September 15 to 18,2011.Bringing together over 40 galleries and art institutions,this year's Fine Art Beijing offers a strong lineup.It presented an extraordinary exhibition of both classical and modem art from West and East.Compared with previous fairs,the exhibits at the Fine Art Beijing 2011 are richer in form and more diversified in style.Attending the fair,you would be able to travel from the ancient pastto the contemporary art world,enjoying classical Western paintings,modem Chinese paintings,modem and contemporary oil paintings,Japanese paintings,and Russian oil paintings,all of which havehad an enormous impact on contemporary Chinese art.

  1. Arte precolombino, arte moderno y arte latinoamericano

    OpenAIRE

    Gamboa Hinestrosa, Pablo

    2014-01-01

    ¿Cuál es la vigencia del arte precolombino? ¿Qué ha aportado ala corriente del arte universal? ¿Qué se deben mutuamente arte modernoy arte precolombino? Estos planteamientos nos sirven para establecerla vigencia del arte precolombino en Latinoamérica, buscandoantecedentes desde los tiempos de la Conquista hasta nuestros días.

  2. Earth Resources Observation and Science (EROS) Center's Earth as Art Image Gallery

    Data.gov (United States)

    National Aeronautics and Space Administration — The Earth Resources Observation and Science (EROS) Center manages this collection of Landsat 7 scenes created for aesthetic purposes rather than scientific...

  3. An Manufactory Surrounded by Art Galleries%被美术馆环绕的工厂

    Institute of Scientific and Technical Information of China (English)

    陈子祺

    2005-01-01

    2005年4月中旬,应EIZO Nanao Corporation的邀请,我们来到日本对EIZO公司进行了参观访问。以为只是一个例行公务的采访,没想到的是,几天的行程下来,又因为几座美术馆,而让我对EIZO有了新的看法,并且有了意外的收获。

  4. Earth Resources Observation and Science (EROS) Center's Earth as Art Image Gallery 2

    Data.gov (United States)

    National Aeronautics and Space Administration — The Earth Resources Observation and Science (EROS) Center manages this collection of forty-five new scenes developed for their aesthetic beauty, rather than for...

  5. Earth Resources Observation and Science (EROS) Center's Journey of Lewis and Clark Gallery

    Data.gov (United States)

    National Aeronautics and Space Administration — The Earth Resources Observation and Science (EROS) Center manages the this gallery of Landsat-derived images of one of the most remarkable and productive scientific...

  6. 75 FR 15740 - Gallery Leather Company, Inc., Trenton, ME; Notice of Termination of Investigation

    Science.gov (United States)

    2010-03-30

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF LABOR Employment and Training Administration Gallery Leather Company, Inc., Trenton, ME; Notice of Termination of... Leather Company, Inc., Trenton, Maine. The petitioner has requested that the petition be...

  7. PAO Image Gallery = Public Affairs Photos of EROS Projects: 1972 - 2005

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The EROS Image Gallery collection is composed of a wide variety of images ranging from low altitude aircraft to satellite and NASA imagery; oblique photographs and...

  8. Earth Resources Observation and Science (EROS) Center's Landsat State Mosaics Gallery

    Data.gov (United States)

    National Aeronautics and Space Administration — The Earth Resources Observation and Science (EROS) Center manages the this gallery of images of the 50 U.S. states plus Puerto Rico as derived by Landsat data.

  9. A arte psicodélica e sua relação com a arte contemporânea norte-americana e inglesa dos anos 1960: uma dissolução de fronteiras

    OpenAIRE

    2014-01-01

    Our goal is to find the relationship between psychedelic art, which was a part of the 1960’s counterculture movement, and the so called contemporary art, whose first expressions were coming out at the same time. Contemporary art can be assumed to be a mainstream art because it was found at the main galleries and museums and is a well known movement in the History of Art. Psychedelic art, on the contrary, was also known as a kind of underground expression, and is linked with outsider art, whic...

  10. "Why is it art?" : a talk by Christian Bernard, current director of the Geneva contemporary art gallery Mamco

    CERN Multimedia

    Patrice Loiez

    2000-01-01

    Christian Bernard (right) being welcomed to CERN by Claude Detraz, Director for Fixed Target and Future Programmes, Michel Benot, Vice-President of the Staff Association, who is organising the talk on 21 March, and Jean-Pierre Merlo, physicist and member of the Friends of Mamco committee.

  11. Optothermal transport behavior in whispering gallery mode optical cavities

    Energy Technology Data Exchange (ETDEWEB)

    Soltani, Soheil [Ming Hsieh Department of Electrical Engineering-Electrophysics, University of Southern California, Los Angeles, California 90089 (United States); Armani, Andrea M., E-mail: armani@usc.edu [Ming Hsieh Department of Electrical Engineering-Electrophysics, University of Southern California, Los Angeles, California 90089 (United States); Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089 (United States)

    2014-08-04

    Over the past century, whispering gallery mode optical cavities have enabled numerous advances in science and engineering, such as discoveries in quantum mechanics and non-linear optics, as well as the development of optical gyroscopes and add drop filters. One reason for their widespread appeal is their ability to confine light for long periods of time, resulting in high circulating intensities. However, when sufficiently large amounts of optical power are coupled into these cavities, they begin to experience optothermal or photothermal behavior, in which the optical energy is converted into heat. Above the optothermal threshold, the resonance behavior is no longer solely defined by electromagnetics. Previous work has primarily focused on the role of the optothermal coefficient of the material in this instability. However, the physics of this optothermal behavior is significantly more complex. In the present work, we develop a predictive theory based on a generalizable analytical expression in combination with a geometry-specific COMSOL Multiphysics finite element method model. The simulation couples the optical and thermal physics components, accounting for geometry variations as well as the temporal and spatial profile of the optical field. To experimentally verify our theoretical model, the optothermal thresholds of a series of silica toroidal resonant cavities are characterized at different wavelengths (visible through near-infrared) and using different device geometries. The silica toroid offers a particularly rigorous case study for the developed optothermal model because of its complex geometrical structure which provides multiple thermal transport paths.

  12. High-Q whispering-gallery mode sensor in liquids

    Science.gov (United States)

    Nadeau, Jay L.; Ilchenko, Vladimir S.; Kossakovski, Dmitri; Bearman, Gregory H.; Maleki, Lute

    2002-06-01

    Optical sensing of biomolecules on microfabricated glass surfaces requires surface coatings that minimize nonspecific binding while preserving the optical properties of the sensor. Microspheres with whispering-gallery (WG) modes can achieve quality factor (Q) levels many orders of magnitude greater than those of other WG-based microsensors: greater than 1010 in air, and greater than 109 in a variety of solvents, including methanol, H2O and phosphate buffered saline (PBS). The presence of dyes that absorb in the wavelength of the WG excitation in the evanescent zone can cause this Q value to drop by almost 3 orders of magnitude. Silanization of the surface with mercapto-terminal silanes is compatible with high Q (>109), but chemical cross-linking of streptavidin reduces the Q to 105-106 due to build-up of a thick, irregular layer of protein. However, linkage of biotin to the silane terminus preserves the Q at a ~2x107 and yields a reactive surface sensitive to avidin-containing ligands in a concentration-dependent manner. Improvements in the reliability of the surface chemistry show promise for construction of an ultrasensitive biosensor.

  13. Protein-based flexible whispering gallery mode resonators

    Science.gov (United States)

    Yilmaz, Huzeyfe; Pena-Francesch, Abdon; Xu, Linhua; Shreiner, Robert; Jung, Huihun; Huang, Steven H.; Özdemir, Sahin K.; Demirel, Melik C.; Yang, Lan

    2016-02-01

    The idea of creating photonics tools for sensing, imaging and material characterization has long been pursued and many achievements have been made. Approaching the level of solutions provided by nature however is hindered by routine choice of materials. To this end recent years have witnessed a great effort to engineer mechanically flexible photonic devices using polymer substrates. On the other hand, biodegradability and biocompatibility still remains to be incorporated. Hence biomimetics holds the key to overcome the limitations of traditional materials in photonics design. Natural proteins such as sucker ring teeth (SRT) and silk for instance have remarkable mechanical and optical properties that exceed the endeavors of most synthetic and natural polymers. Here we demonstrate for the first time, toroidal whispering gallery mode resonators (WGMR) fabricated entirely from protein structures such as SRT of Loligo vulgaris (European squid) and silk from Bombyx mori. We provide here complete optical and material characterization of proteinaceous WGMRs, revealing high quality factors in microscale and enhancement of Raman signatures by a microcavity. We also present a most simple application of a WGMR as a natural protein add-drop filter, made of SRT protein. Our work shows that with protein-based materials, optical, mechanical and thermal properties can be devised at the molecular level and it lays the groundwork for future eco-friendly, flexible photonics device design.

  14. Optofluidic whispering gallery mode microcapillary lasers for refractive index sensing

    Science.gov (United States)

    François, Alexandre; Riesen, Nicolas; Gardner, Kristy; Monro, Tanya M.; Meldrum, Al

    2016-12-01

    Whispering gallery modes (WGMs) allow for remarkable refractive index sensing performance with extremely low detection limits, and thus have found use in various emerging label free biosensing applications. Among the different types of resonators which have been studied, microcapillaries have the unique property of having the evanescent fields extend into and sample the medium inside the resonator, which is particularly interesting because the resonator itself serves as a microfluidic channel. Here, lasing of the WGMs in fluorescent microcapillaries is demonstrated for the first time, and their application to refractive index sensing is investigated. The laser gain medium used here is embedded inside a high refractive index polymer coating deposited onto the inner surface of the capillary. Lasing can only be realized for thick polymer coatings (in this case >= 800 nm), with higher Q factor but also stronger confinement of the propagating wave, which lowers the refractive index sensitivity compared to non-lasing capillaries which can have thinner polymer coatings. We however find that the large improvement in signal-to-noise ratio and Q factor realized upon lasing more than compensates for the reduced sensitivity, resulting in an order-of-magnitude improvement in the detection limit for refractive index sensing.

  15. Whispering Gallery Modes in Hexagonal Zinc Oxide Micro- and Nanocrystals

    Science.gov (United States)

    Nobis, Thomas; Kaidashev, Evgeni M.; Rahm, Andreas; Lorenz, Michael; Grundmann, Marius

    The resonator properties of zinc oxide (ZnO) micro- and nanocrystals grown by a novel high pressure pulsed laser deposition process have been investigated at room temperature by cathodoluminescence (CL), spatially resolved CL-imaging and polarization resolved micro-photoluminescence (μ-PL) within the visible spectral range. The spectra exhibit a series of comparatively sharp and almost equidistant resonance lines. Using a simple plane wave interference model and taking into account the spectral characteristic n(ω) of the refractive index of ZnO, we can unambiguously attribute those lines to whispering gallery modes (WGMs) of a two dimensional hexagonal resonator. The predicted resonator diameters agree well with the measured crystal sizes. Tapered, high aspect ratio ZnO nanoneedles furthermore allow systematic investigations of the WGMs as a function of cavity diameter D down to zero. Hence, the transition from a multi-mode to a single mode cavity is directly observed. μ-PL experiments demonstrate that the WGMs are mainly TM polarized.

  16. Shooting gallery attendance among IDUs in Tijuana and Ciudad Juarez, Mexico: correlates, prevention opportunities, and the role of the environment.

    Science.gov (United States)

    Philbin, Morgan; Pollini, Robin A; Ramos, Rebecca; Lozada, Remedios; Brouwer, Kimberly C; Ramos, Maria Elena; Firestone-Cruz, Michelle; Case, Patricia; Strathdee, Steffanie A

    2008-07-01

    We identified factors associated with shooting gallery attendance among injection drug users (IDUs) in two Mexico-US border cities. IDUs in Tijuana (n=222) and Ciudad Juarez (n=205), Mexico, who were >or=18 years and injected illicit drugs in the last month were recruited using respondent-driven sampling (RDS). An interviewer-administered survey collected sociodemographic and behavioral data. Logistic regression was used to examine correlates of shooting gallery attendance in each of the two cities. Homelessness and being arrested for syringe possession--both structural level factors--were associated with shooting gallery use in both cities. In Ciudad Juarez, younger age and having overdosed were also associated with shooting gallery use. Our study highlights the need for structural interventions that mitigate homelessness among IDUs and facilitate changes in law enforcement practices associated with shooting gallery use. Harm reduction interventions based within shooting galleries should also be considered to prevent transmission of blood-borne pathogens among IDUs.

  17. The Noble Path: Buddhist Art of South Asia and Tibet. Teacher's Packet.

    Science.gov (United States)

    Sierra Community Coll., Rocklin, CA. Mathematics Dept.

    A teaching packet was developed in association with the exhibition, "The Noble Path: Buddhist Art of South Asia and Tibet," held at the Arthur M. Sackler Gallery, Smithsonian Institution, Washington, D.C., from October 1, 1989 to March 31, 1990. The packet aims to provide students in middle and secondary schools with introductory…

  18. Art Imitating Art

    Directory of Open Access Journals (Sweden)

    Eric Brook

    2008-01-01

    Full Text Available Using as a contextual reference my experience of seeing the original and copy of Michelangelo's David in Florence, I briefly introduce how the Platonic legacy has affected that discourse. The Western preference in art and aesthetics is typically in favor of the original over the copy, despite whatever indiscernibility may exist between them. Since Arthur Danto has treated this phenomenon in his text The Transfiguration of the Commonplace, his relevant comments are considered and adapted for the purpose of working through how one understands the relationship between the original and copy in terms of a criterion for defining art.

  19. On the Economy of Symbolic Goods. Ethnographical Explorations at the Art Basel

    OpenAIRE

    Schultheis, Franz; Mazzurana, Thomas

    2016-01-01

    Art fairs play today a central role in the art market, particularly in the trade of contemporary art. In the wake of the art fair boom since the turn of the millennium, they have grown to become one of the most important sales and marketing channels for art dealers. Through this distribution channel the gallery owners are able to gain access to new markets and reach new collectors. In 2012 for example, 36 per cent of sales by dealers were made through local or international fairs. Our rese...

  20. Come to Daddy? Claiming Chris Cunningham for British Art Cinema

    OpenAIRE

    Leggott, James

    2016-01-01

    Twenty years after he came to prominence via a series of provocative, ground-breaking music videos, Chris Cunningham remains a troubling, elusive figure within British visual culture. His output – which includes short films, advertisements, art gallery commissions, installations, music production and a touring multi-screen live performance – is relatively slim, and his seemingly slow work rate (and tendency to leave projects uncompleted or unreleased) has been a frustration for fans and comme...

  1. Whispering Gallery Mode Microresonators for Lasing and Single Nanoparticle Detection

    Science.gov (United States)

    He, Lina

    Whispering gallery mode (WGM) microresonators have attracted great interests due to the significantly enhanced light-matter interactions originating from their high quality factors and small mode volumes. They are suitable for a wide range of applications including sensing, lasing, nonlinear optics, and so forth. However, temperature fluctuations as one of the most common environmental noises disturb the cavity resonances and thus degrade the device stability and sensitivity. We introduce a wetting technique to coat the silica resonator with a thin layer of polymer which has the negative thermo-optic coefficient to compensate for the thermal effect in silica, and demonstrate complete thermal compensation. WGM microresonators have shown great promise for ultra-sensitive and label-free chemical and biological sensing by probing the surroundings with evanescent waves leaking out of the resonator. Sensing is achieved by monitoring the shift or splitting of a resonant frequency. The detection limit is determined by the linewidth of the resonant mode which is ultimately limited by material absorption induced loss. To surpass the limit of passive resonators, we report real-time single nanoparticle detection using on-chip WGM microcavity lasers. The ultra-low threshold microlasers are prepared by doping WGM resonators with rare-earth ions through the sol-gel method, and their linewidths are much narrower than the passive counterparts. The detection approach relies on measuring changes in the heterodyne beat note of two split modes originating from splitting of a narrow emission line in the microlaser induced by nanoscale objects. We demonstrate detection of polystyrene and gold nanoparticles as small as 15 nm and 10 nm in radius, respectively, and Influenza A virions by monitoring changes in the beat note of the split lasing modes. The self-heterodyne interferometric method achieved in the on-chip microlaser provides a self-referencing scheme with extraordinary sensitivity

  2. Beyond the Museum Walls : Situating Art in Virtual Space (Polemic Overlay and Three Movements

    Directory of Open Access Journals (Sweden)

    Vince Dziekan

    2005-01-01

    Full Text Available In recognition of digital communication’s profound effects on social relations and institutions, this paper explores the influence of digitisation on our notions of art through the design of its institutions. No longer can the museum, as the primary technology of art, be viewed as just a physical container. With the additional of the hidden infrastructure of electronic and multimedia technologies that are to be found “behind the walls”, as it were, the architectural issues of negotiating spaces and manipulating locative settings for displaying artworks are as much virtual as physical.As a contribution to the negotiation of a distributed aesthetics, this paper entertains the possibility that transplanting art to the virtual site of the Internet disrupts our understanding of art itself. From presence on the gallery wall to the plane of the screen, if this translation offers an alternative way of seeing, then what does the Web offer to a different apperception of art? How to position the digital in the discourse surrounding art and the role it plays within contemporary cultural practice?In an attempt to ground these concerns, I will frame the subsequent discussion by focussing my attention upon one particularly representative instance: The National Gallery of Victoria’s Ian Potter Gallery of Australian Art; recognising in this localised, site-specific experience a microexample of a much more ubiquitous phenomenon.

  3. Digital Mayhem 3D machine techniques where inspiration, techniques and digital art meet

    CERN Document Server

    Evans, Duncan

    2014-01-01

    From Icy Tundras to Desert savannahs, master the art of landscape and environment design for 2D and 3D digital content. Make it rain, shower your digital scene with a snow storm or develop a believable urban scene with a critical eye for modeling, lighting and composition. Move beyond the limitations of gallery style coffee table books with Digital Mayhem: 3D Landscapes-offering leading professional techniques, groundbreaking inspiration, and artistic mastery from some of the greatest digital artists. More than just a gallery book - each artist has written a breakdown overview, with supporting

  4. Art Museums in Australia: A Personal Retrospect

    Directory of Open Access Journals (Sweden)

    Daniel Thomas

    2011-06-01

    Full Text Available A survey of, and reflections on, the growth of art museums in Australia based on personal experience and involvement. It starts with the early art collections and state galleries and their organisation. It looks at changing patterns of leadership and governance. It considers the roles of inter-state competition, the varying patters of organisation and support and the impact of federal institutions. It reflects on factors of race, gender and ethnicity and also the situation of Australian exhibitions and collections in the Global Village. It considers the effects of popularisation, commercialisation and celebrity culture on exhibition practices. It concludes that Australia’s art museums, more perhaps than any others, have become unusually well-suited to a post-European or post-North Atlantic age.

  5. Contemporary art and compulsory elective contents

    Directory of Open Access Journals (Sweden)

    Metoda Kemperl

    2013-08-01

    Full Text Available Contemporary art differs from modern art, which preceded it, in that it strives for a return to society and everyday life, while concerning itself with current issues that the individual faces in the here and now. One of contemporary art’s more common topics is sustainable development, along with the accompanying issues of environment, values, relation to others, etc. All of these topics are simultaneously part of the concept of active citizenship, which is why understanding contemporary art calls for active citizenship. This is particularly true of relational art, which demands the viewer’s active participation. A link between contemporary art and elective high school subjects or topics can be achieved by means of intensive inter-institutional linking of schools and galleries and museums that exhibit contemporary art.Using three examples of participatory practices (Proletarians of All Countries, Beggar Robot and EU/Others, this paper points to potential cross-curricular links in terms of subject matter. It draws attention to the fact that, from an often-overlooked pedagogical perspective, we experience contemporary art in the here and now; it also points out that the post-structural approaches are most conducive to the appreciation of contemporary art.

  6. Topological Galleries: A High Level User Interface for Topology Controlled Volume Rendering

    Energy Technology Data Exchange (ETDEWEB)

    MacCarthy, Brian; Carr, Hamish; Weber, Gunther H.

    2011-06-30

    Existing topological interfaces to volume rendering are limited by their reliance on sophisticated knowledge of topology by the user. We extend previous work by describing topological galleries, an interface for novice users that is based on the design galleries approach. We report three contributions: an interface based on hierarchical thumbnail galleries to display the containment relationships between topologically identifiable features, the use of the pruning hierarchy instead of branch decomposition for contour tree simplification, and drag-and-drop transfer function assignment for individual components. Initial results suggest that this approach suffers from limitations due to rapid drop-off of feature size in the pruning hierarchy. We explore these limitations by providing statistics of feature size as function of depth in the pruning hierarchy of the contour tree.

  7. Seasonal feeding ecology of ring-tailed lemurs: a comparison of spiny and gallery forest habitats.

    Science.gov (United States)

    LaFleur, Marni; Sauther, Michelle L

    2015-01-01

    Although Lemur catta persists in many habitat types in southern Madagascar, its ecology has been primarily studied within gallery forests. We compare plant food selection and properties for ring-tailed lemurs in the spiny and gallery forests over the synchronized lactation period (September to March) that includes both the dry and wet seasons. We found no significant habitat-specific differences in the type of plant part consumed per month (i.e. flower, fruit, leaf) or between the intake of soluble carbohydrates. However, the presence and use of Tamarindus indica plants appear to elevate protein and fiber intake in the gallery forest lemurs' diets. Protein is especially important for reproductive females who incur the added metabolic costs associated with lactation; however, fiber can disrupt protein digestion. Future work should continue to investigate how variations of protein and fiber affect ring-tailed lemur dietary choice and nutrient acquisition.

  8. Stress Distribution on Blasting Gallery Barrier Pillar due to Goaf Formation During Extraction

    Science.gov (United States)

    Kumar Reddy, Sandi; Sastry, Vedala Rama

    2015-09-01

    Semi-mechanised blasting gallery mining is a sustainable option to achieve higher production and productivity from underground thick coal seams. Judicious design of underground blasting gallery panel requires understanding of stress distribution on barrier pillars during different stages of extraction. This paper presents a study of stress distribution in and around barrier pillar for the different stages of extraction in the blasting gallery panel. Finite difference analysis taken up for final excavation (depillaring) in the panel with different stages of extraction. Analysis revealed that the stress transferred on barrier pillar increased as progress of excavation increased. Maximum stress was observed at a distance of 10 and 12 m from the pillar edge for virgin and goaved out panel sideby respectively, which gradually decreased towards centre of the pillar.

  9. Stress Distribution on Blasting Gallery Barrier Pillar due to Goaf Formation During Extraction

    Science.gov (United States)

    Kumar Reddy, Sandi; Sastry, Vedala Rama

    2016-10-01

    Semi-mechanised blasting gallery mining is a sustainable option to achieve higher production and productivity from underground thick coal seams. Judicious design of underground blasting gallery panel requires understanding of stress distribution on barrier pillars during different stages of extraction. This paper presents a study of stress distribution in and around barrier pillar for the different stages of extraction in the blasting gallery panel. Finite difference analysis taken up for final excavation (depillaring) in the panel with different stages of extraction. Analysis revealed that the stress transferred on barrier pillar increased as progress of excavation increased. Maximum stress was observed at a distance of 10 and 12 m from the pillar edge for virgin and goaved out panel sideby respectively, which gradually decreased towards centre of the pillar.

  10. Colloid-borne uranium and other heavy metals in the water of a mine drainage gallery

    Energy Technology Data Exchange (ETDEWEB)

    Zaenker, H.; Richter, W.; Brendler, V.; Nitsche, H. [Forschungszentrum Rossendorf e.V. (FZR) (Germany). Inst. fuer Radiochemie

    2000-07-01

    The water of a mine drainage gallery was investigated for its contents of colloid-borne heavy metals with emphasis on uranium. About 1 mg/L of colloid particles of 100 to 300 nm were found. They consist of a matrix of Fe and Al oxyhydroxides and are formed when anoxic slightly acidic shaft waters mix with oxic near-neutral gallery water. The colloid particles bear toxic trace elements such as As, Pb, and Cu. Almost 100% of the As and Pb and about 70% of the Cu contained in the water are colloid-borne. Carbonato complexes prevent the uranyl from being adsorbed on the colloids in the unaltered gallery water. Acidification destroys these complexes: up to 50% of the uranium is attached to the colloids in the slightly acidic pH region. Further acidification converts the uranyl again to a 'non-colloidal' form. (orig.)

  11. Using Whispering-Gallery-Mode Resonators for Refractometry

    Science.gov (United States)

    Matsko, Andrey; Savchenkov, Anatoliy; Strekalov, Dmitry; Iltchenko, Vladimir; Maleki, Lute

    2010-01-01

    A method of determining the refractive and absorptive properties of optically transparent materials involves a combination of theoretical and experimental analysis of electromagnetic responses of whispering-gallery-mode (WGM) resonator disks made of those materials. The method was conceived especially for use in studying transparent photorefractive materials, for which purpose this method affords unprecedented levels of sensitivity and accuracy. The method is expected to be particularly useful for measuring temporally varying refractive and absorptive properties of photorefractive materials at infrared wavelengths. Still more particularly, the method is expected to be useful for measuring drifts in these properties that are so slow that, heretofore, the properties were assumed to be constant. The basic idea of the method is to attempt to infer values of the photorefractive properties of a material by seeking to match (1) theoretical predictions of the spectral responses (or selected features thereof) of a WGM of known dimensions made of the material with (2) the actual spectral responses (or selected features thereof). Spectral features that are useful for this purpose include resonance frequencies, free spectral ranges (differences between resonance frequencies of adjacently numbered modes), and resonance quality factors (Q values). The method has been demonstrated in several experiments, one of which was performed on a WGM resonator made from a disk of LiNbO3 doped with 5 percent of MgO. The free spectral range of the resonator was approximately equal to 3.42 GHz at wavelengths in the vicinity of 780 nm, the smallest full width at half maximum of a mode was approximately equal to 50 MHz, and the thickness of the resonator in the area of mode localization was 30 microns. In the experiment, laser power of 9 mW was coupled into the resonator with an efficiency of 75 percent, and the laser was scanned over a frequency band 9 GHz wide at a nominal wavelength of

  12. Viability of microcomputed tomography to study tropical marine worm galleries in humid muddy sediments

    Energy Technology Data Exchange (ETDEWEB)

    Pennafirme, Simone F., E-mail: sipennafirme@gmail.com [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Inst. de Biologia. Dept. de Biologia Marinha; Machado, Alessandra S.; Lima, Inaya; Suzuki, Katia N.; Lopes, Ricardo T., E-mail: machado@lin.ufrj.br, E-mail: inaya@lin.ufrj.br, E-mail: norisuzuki6@yahoo.com.br, E-mail: ricardo@lin.ufj.br [Coordenacao dos Programas de Pos-Graduacao em Engenharia (COPPE/UFRJ), RJ (Brazil). Lab. de Instrumentacao Nuclear

    2013-07-01

    Bioturbation is an ecological process driven by organisms, which transports nutrients and gases from air/water to sediment through their galleries, by the time they feed, burrow and/or construct galleries. This exchange is vital to the maintenance of micro and macrobenthic organisms, mainly in muddy flat environments. Species with distinct galleries could create levels of bioturbation, affecting the benthic interactions. In this sense, it is fundamental developing a non-destructive method that permits identifying/quantifying the properties of these galleries. The recent advances in micro-computed tomography are allowing the high resolution 3D images generation. However, once muddy sediments are rich in organic matter and interstitial water, these would lead to motion artifacts which could, in turn, decrease the accuracy of galleries identification/quantification. In this context, the aim of this study was to develop a protocol which combines laboratory experiments and microtomography analysis in order to generate accurate 3D images of the small marine worm's galleries within humid muddy sediments. The sediment was collected at both muddy flats of Surui's and Itaipu lagoon's mangroves (RJ-Brazil), sieved (0.5mm mesh) and introduced with one individual of the marine worm Laeonereis acuta (Nereididae, Polychaeta) in each acrylic corer holders (4.4cm of internal diameter). High energy microtomography scanner was used to obtain 3D images and the setup calibration was 130 kV and 61 mA. Each acquisition image time was among 4h and 6h. Several procedures of drying remained water inside the cores were performed aiming obtaining images without movement artifacts due to circulating water, and this issue was one of the main studied parameter. In order to investigate possible chemical effects, 2ml of formalin (35%) with menthol were added to the surface of the cores. The results show that although the drying time was appropriated, the chemicals created bubbles

  13. Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern

    DEFF Research Database (Denmark)

    Schunk, Gerhard; Fuerst, Josef U.; Förtsch, Michael;

    2014-01-01

    Identifying the mode numbers in whispering-gallery mode resonators (WGMRs) is important for tailoring them to experimental needs. Here we report on a novel experimental mode analysis technique based on the combination of frequency analysis and far-field imaging for high mode numbers of large WGMRs....... The radial mode numbers q and the angular mode numbers p = l-m are identified and labeled via far-field imaging. The polar mode numbers l are determined unambiguously by fitting the frequency differences between individual whispering gallery modes (WGMs). This allows for the accurate determination...

  14. Whispering gallery mode resonators for frequency metrology applications

    Science.gov (United States)

    Baumgartel, Lukas

    This dissertation describes an investigation into the use of whispering gallery mode (WGM) resonators for applications towards frequency reference and metrology. Laser stabilization and the measurement of optical frequencies have enabled myriad technologies of both academic and commercial interest. A technology which seems to span both motivations is optical atomic clocks. These devices are virtually unimaginable without the ultra stable lasers plus frequency measurement and down-conversion afforded by Fabry Perot (FP) cavities and model-locked laser combs, respectively. However, WGM resonators can potentially perform both of these tasks while having the distinct advantages of compactness and simplicity. This work represents progress towards understanding and mitigating the performance limitations of WGM cavities for such applications. A system for laser frequency stabilization to a the cavity via the Pound-Drever-Hall (PDH) method is described. While the laser lock itself is found to perform at the level of several parts in 1015, a variety of fundamental and technical mechanisms destabilize the WGM frequency itself. Owing to the relatively large thermal expansion coefficients in optical crystals, environmental temperature drifts set the stability limit at time scales greater than the thermal relaxation time of the crystal. Uncompensated, these drifts pull WGM frequencies about 3 orders of magnitude more than they would in an FP cavity. Thus, two temperature compensation schemes are developed. An active scheme measures and stabilizes the mode volume temperature to the level of several nK, reducing the effective temperature coefficient of the resonator to 1.7x10-7 K-1; simulations suggest that the value could eventually be as low as 3.5x10-8 K-1, on par with the aforementioned FP cavities. A second, passive scheme is also described, which employs a heterogeneous resonator structure that capitalizes on the thermo-mechanical properties of one material and the optical

  15. Demonstration of whispering-gallery-mode resonant enhancement of optical forces

    CERN Document Server

    Li, Yangcheng; Limberopoulos, Nicholaos I; Astratov, Vasily N

    2015-01-01

    We experimentally studied whispering-gallery modes(WGMs) and demonstrated resonance enhancement of optical forces evanescently exerted on dielectric microspheres. We showed that the resonant light pressure can be used for optical sorting of microparticles with extraordinary uniform resonant properties that is unachievable by conventional sorting techniques.

  16. Crystalline Whispering Gallery Mode Resonators: In Search of The Optimal Material

    CERN Document Server

    Ilchenko, V S; Matsko, A B; Maleki, L

    2014-01-01

    Different applications of crystalline whispering gallery mode resonators call for different properties of the resonator host material. We report on our recent study of resonators made out of sapphire, diamond, and quartz crystals and discuss possible applications of these resonators. In particular, we demonstrate Kerr frequency comb generation in sapphire microresonators.

  17. Highly Stable On-Chip Embedded Organic Whispering Gallery Mode Lasers

    NARCIS (Netherlands)

    Lu, Shi-Yang; Fang, Hong-Hua; Feng, Jing; Xia, Hong; Zhang, Tie-Qiang; Chen, Qi-Dai; Sun, Hong-Bo; Fang, Honghua

    2014-01-01

    Chip-embedded organic resonator is fabricated with 2,5-Bis(4-biphenylyl)thiophene (BP1T) crystals encapsulated with polydimethylsiloxane (PDMS). Whispering gallery mode lasing is demonstrated in these on-chip embedded crystalline microresonators, without decline in the spectral properties, and perfo

  18. All-optical Photonic Oscillator with High-Q Whispering Gallery Mode Resonators

    Science.gov (United States)

    Savchenkov, Anatoliy A.; Matsko, Andrey B.; Strekalov, Dmitry; Mohageg, Makan; Iltchenko, Vladimir S.; Maleki, Lute

    2004-01-01

    We demonstrated low threshold optical photonic hyper-parametric oscillator in a high-Q 10(exp 10) CaF2 whispering gallery mode resonator which generates stable 8.5 GHz signal. The oscillations result from the resonantly enhanced four wave mixing occurring due to Kerr nonlinearity of the material.

  19. All-optical switching and strong coupling using tunable whispering-gallery-mode microresonators

    NARCIS (Netherlands)

    O'Shea, D.; Junge, C.; Poellinger, M.; Vogler, A.; Rauschenbeutel, A.

    2011-01-01

    We review our recent work on tunable, ultra-high quality factor whispering-gallery-mode bottle microresonators and highlight their applications in non-linear optics and in quantum optics experiments. Our resonators combine ultra-high quality factors of up to Q=3.6x10(8), a small mode volume, and nea

  20. Brillouin Lasing with a CaF_2 Whispering Gallery Mode Resonator

    CERN Document Server

    Grudinin, Ivan S; Maleki, Lute

    2008-01-01

    Stimulated Brillouin scattering with both pump and Stokes beams in resonance with whispering gallery modes of an ultra high Q CaF_2 resonator is demonstrated for the first time. The resonator is pumped with 1064 nm light and has a Brillouin lasing threshold of 3.5 microwatt. Potential applications include optical generation of microwaves and sensitive gyros.

  1. Durability of visitable concrete sewer gallery under the effect of domestic wastewater

    Science.gov (United States)

    Salhi, Aimed; Kriker, Abdelouahed; Tioua, Tahar; Abimiloud, Youcef; Barluenga, Gonzalo

    2016-07-01

    The durability of concrete structures for the disposal of wastewater depends on their behavior when faced to different aggressions such as mechanics, chemical and biological, causing a deterioration often cementing matrix. The deterioration of recent evacuations wastewater infrastructure, made of reinforced concrete less than 15 years ago, has become an important concern. The aim of this study was to investigate the degradation and the factors responsible for the deterioration of the concrete visitable gallery of sewage from the town of Touggourt (south-east of Algeria). Thus, samples from different parts of the gallery were extracted and unaltered samples were selected as a reference. A degraded sample exposed to H2S gas and another sample of the gallery submerged into wastewater were analyzed to characterize the internal and external damage to the gallery as well as the chemical and mineralogical changes. These tests were complemented by a physical and mechanical characterization of the samples. The experimental results showed the strong anisotropy of both internal and external damage.

  2. The Spiral Gallery: Non-Market Creativity and Belonging in an Australian Country Town

    Science.gov (United States)

    Waitt, Gordon; Gibson, Chris

    2013-01-01

    This paper seeks to explore creative practice in an Australian country town, and in so doing, to unsettle market-orientated interpretations of creativity that privilege the urban. Instead of focusing on creative practice as a means to develop industries, we focus on how creativity is a means to establish a cooperative gallery space that helps to…

  3. Fra Bartolomeo della Porta detto Fra Bartolomeo, Adorazione del Bambino, National Gallery, London

    DEFF Research Database (Denmark)

    Fischer, Chris

    2014-01-01

    En artikel om et maleri af Fra Bartolomeo i National Gallery i London udlånt til en udstilling i Museo Tosio Martinengo I Brescia i forbindelse med opdagelsen af et fuldstændigt overensstemmende maleri i dette museums magasiner. Hypotesen var at Bresciabilledet var et værkstedsarbejde lavet på...

  4. Organisational Art

    DEFF Research Database (Denmark)

    Ferro-Thomsen, Martin

    creation of a practical utopia (?heterotopia?) in the organisational context. The case study makes use of both art- and organisational theory. The thesis concludes with an outline of a framework for OA that is derived from contemporary theory of mainly Relational Aesthetics (Bourriaud), Conceptual Art......University of Copenhagen / Learning Lab Denmark. 2005 Kort beskrivelse: Organisational Art is a tentative title for an art form that works together with organisations to produce art. This is most often done together with non-artist members of the organisation and on-site in their social context. OA...... is characterised as socially engaged, conceptual, discursive, site-specific and contextual. Abstract: This investigation is about Organisational Art (OA), which is a tentative title for an art form that works together with organisations (companies, institutions, communities, governments and NGOs) to produce art...

  5. Rock Art

    Science.gov (United States)

    Henn, Cynthia A.

    2004-01-01

    There are many interpretations for the symbols that are seen in rock art, but no decoding key has ever been discovered. This article describes one classroom's experiences with a lesson on rock art--making their rock art and developing their own personal symbols. This lesson allowed for creativity, while giving an opportunity for integration…

  6. CURATORIAL PRACTICES IN THE MODERN ART ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    Cagatay AKENGIN

    2014-08-01

    Full Text Available The curatorship has become a profession in the visual art field during the period from 1960s to today. In this context, it is aimed to explain the development of curatorship and job description of it which is/is tried to be imposed to it as well as the history of curatorship. A reflection of social and political events by the end of 1960s, of course, showed itself in the artistic events. It was started to be questioned the positions of institutions such as museum and gallery through or via different movements occurred during those periods. When it is examined in the processual aspect, the new and alternative searches have been initiated and thus, the profession, curatorship, was subjected to a change. In the scope of this change, it is observed that the curatorship is transformed into a creating field in the visual art through the important exhibitions.

  7. [Art therapy and "art brut"].

    Science.gov (United States)

    Kovács, Emese; Simon, Lajos

    2010-01-01

    The authors in this article explor the most important steps of the development of the research on the psychopathology of expression. They introduce the development of Art Brut and it's place in art history. They deal with the characteristics of art therapy.

  8. Art Rocks with Rock Art!

    Science.gov (United States)

    Bickett, Marianne

    2011-01-01

    This article discusses rock art which was the very first "art." Rock art, such as the images created on the stone surfaces of the caves of Lascaux and Altimira, is the true origin of the canvas, paintbrush, and painting media. For there, within caverns deep in the earth, the first artists mixed animal fat, urine, and saliva with powdered minerals…

  9. Dalla parola all'immagine: il linguaggio della critica d'arte: Per la traduzione di una "traduzione"

    OpenAIRE

    De Martin, Maria Pia

    1994-01-01

    Negli ultimi decenni i musei e le gallerie d'arte di tutta Europa hanno visto crescere continuamente l'afflusso dei visitatori: basti pensare alle grandi mostre degli ultimi anni e alle interminabili code per accedervi (per esempio Kandinsky a Parigi e a Milano nel 1985). Laddove, in passato, la fruizione delle opere d'arte era limitata ad una stretta cerchia di persone, esse sembrano aver risvegliato oggi l'interesse del grande pubblico. Insieme all'interesse generale cres...

  10. Installation Art

    DEFF Research Database (Denmark)

    Petersen, Anne Ring

    Despite its large and growing popularity – to say nothing of its near-ubiquity in the world’s art scenes and international exhibitions of contemporary art –installation art remains a form whose artistic vocabulary and conceptual basis have rarely been subjected to thorough critical examination....... In Installation Art: Between Image and Stage, Anne Ring Petersen aims to change that. She begins by exploring how installation art developed into an interdisciplinary genre in the 1960s, and how its intertwining of the visual and the performative has acted as a catalyst for the generation of new artistic...... phenomena. It investigates how it became one of today’s most widely used art forms, increasingly expanding into consumer, popular and urban cultures, where installation’s often spectacular appearance ensures that it meets contemporary demands for sense-provoking and immersive cultural experiences. The main...

  11. Mindful art.

    Science.gov (United States)

    Malafouris, Lambros

    2013-04-01

    Bullot & Reber (B&R) begin asking if the study of the mind's inner life can provide a foundation for a science of art. Clearly there are many epistemological problems involved in the study of the cognitive and affective basis of art appreciation. I argue that context is key. I also propose that as long as the "mind's life" continues to be perceived as an "inner" intracranial phenomenon, little progress can be made. Mind and art are one.

  12. Nest-Gallery Development and Caste Composition of Isolated Foraging Groups of the Drywood Termite, Incisitermes minor (Isoptera: Kalotermitidae

    Directory of Open Access Journals (Sweden)

    S. Khoirul Himmi

    2016-07-01

    Full Text Available An X-ray computed-tomographic examination of nest-gallery development from timbers naturally infested by foraging groups of Incisitermes minor colonies was conducted. This study documents the colonization process of I. minor to new timbers and how the isolated groups maintain their nest-gallery system. The results suggested that development of a nest-gallery within a suitable wood item is not random, but shows selection for softer substrate and other adaptations to the different timber environments. Stigmergic coordinations were expressed in dynamic changes of the nest-gallery system; indicated by fortification behavior in sealing and re-opening a tunnel approaching the outer edge of the timber, and accumulating fecal pellets in particular chambers located beneath the timber surface. The study also examines the caste composition of isolated groups to discover how I. minor sustains colonies with and without primary reproductives.

  13. Nest-Gallery Development and Caste Composition of Isolated Foraging Groups of the Drywood Termite, Incisitermes minor (Isoptera: Kalotermitidae).

    Science.gov (United States)

    Himmi, S Khoirul; Yoshimura, Tsuyoshi; Yanase, Yoshiyuki; Oya, Masao; Torigoe, Toshiyuki; Akada, Masanori; Imadzu, Setsuo

    2016-07-22

    An X-ray computed-tomographic examination of nest-gallery development from timbers naturally infested by foraging groups of Incisitermes minor colonies was conducted. This study documents the colonization process of I. minor to new timbers and how the isolated groups maintain their nest-gallery system. The results suggested that development of a nest-gallery within a suitable wood item is not random, but shows selection for softer substrate and other adaptations to the different timber environments. Stigmergic coordinations were expressed in dynamic changes of the nest-gallery system; indicated by fortification behavior in sealing and re-opening a tunnel approaching the outer edge of the timber, and accumulating fecal pellets in particular chambers located beneath the timber surface. The study also examines the caste composition of isolated groups to discover how I. minor sustains colonies with and without primary reproductives.

  14. Art & Science duality in Fluid Mechanics

    Science.gov (United States)

    Chomaz, Jean-Marc

    2014-11-01

    The connections between Art & Science is analysed through examples of my research both in Fluid Mechanics and in Art & Science. Working as a member of the artist group Labofactory and collaborating with more than twenty different artists, I have been exploring for more than twenty-four years a path between art and science that mixes both scientific and artistic imaginations. Formulating questions in science is pure imagination and intuition that does not involve only the sensible side of the brain but the sensitive side, which is able to be non incremental, to understand faster and anticipate. Instead of showing scientific proof or technique, it is possible with Art & Science to directly attempt to share this sensitive side. I will show ten recent installations that involve vortex rings, tornado generators, music propagated in shallow layers, wave tanks used as silent soft drums, boundary layer on a rotating sphere to question climate change, plum ever evolving over a nuclear plan in an water tank, a bubbly fountain in microfluidic... Two installations on the thermohaline circulation staged in a stratified tank and on the generation of earthquake are part of the exhibit ``LOST IN FATHOMS'' with the artist Anaïs Tondeur from 17 October until 29 November 2014 at the GV Art gallery, London. These pieces are like writing poems using fluid mechanics and by doing so re-interrogating our scientific practice and the societal role of science. They symmetrize the relation with the public that involve not only ``outreach'' but ``inreach'' or sharing.

  15. [The role of art therapy in the rehabilitation of psycho-socially disabled people].

    Science.gov (United States)

    Simon, Lajos; Kovács, Emese

    2015-01-01

    The present review focuses on the generally accepted and applied community psychiatry based models of psycho-social rehabilitation. The basics of the Strenghts model and the Recovery based model are introduced in this paper. Both models can be assisted by art therapy in various ways. The forms and the therapeutic factors of art therapy are also discussed, as well as the effects of the creating experience during the art therapy sessions. The authors introduce the good practice of the Moravcsik Foundation with highlights in two special areas that are beyond the generally applied art therapy work and representing important support in reaching the goals set during the rehabilitation process. Further, the authors describe the Budapest Art Brut Gallery and the PsychArt24 art marathon project in details.

  16. Sala do Artista Popular: Tradição, Identidade e Mercado / Gallery of the Popular Artist: tradition, identity, market

    OpenAIRE

    Luiz César dos Santos Baía

    2009-01-01

    BAIA, Luiz César dos Santos. Sala do Artista Popular: Tradição, Identidade e Mercado. 2008. Dissertação (Mestrado) – Programa de Pós-Graduação em Museologia e Patrimônio, UNIRIO/MAST, Rio de Janeiro, 2008. 105p. Orientador: Prof. Dr. Nilson Alves de Moraes. .......................................................................................... Gallery of the Popular Artist: tradition, identity, market. BAIA, Luiz César dos Santos. Gallery of the Popular Artist: tradition, ident...

  17. Detection and identification of microparticles/nanoparticles and blood components using optical resonance of whispering-gallery modes in microspheres

    Science.gov (United States)

    Tcherniavskaia, E. A.; Saetchnikov, V. A.

    2010-11-01

    We present experimental data on the dependence of optical resonance spectra of whispering-gallery modes in dielectric microspheres on the constituent composition of solutions modeling blood plasma and also containing disease indicators and virus ghosts. We observe substantial changes in the optical resonance spectra of whispering-gallery modes, associated both with a change in the macroscopic parameters of the microsphere environment and with possible interaction between the microsphere surface and components of the solution.

  18. Surface optomechanics: Calculating optically excited acoustical whispering gallery modes in microspheres

    CERN Document Server

    Zehnpfennig, John; Tomes, Matthew; Carmon, Tal

    2011-01-01

    Stimulated Brillouin scattering recently allowed experimental excitation of surface acoustic resonances in micro-devices, enabling vibration at rates in the range of 50 MHz to 12 GHz. The experimental availability of such mechanical whispering gallery modes in photonic-MEMS raises questions on their structure and spectral distribution. Here we calculate the form and frequency of such vibrational surface whispering gallery modes, revealing diverse types of surface vibrations including longitudinal, transverse, and Rayleigh-type deformations. We parametrically investigate these various modes by changing their orders in the azimuthal, radial, and polar directions to reveal different vibrational structures including mechanical resonances that are localized near the interface with the environment where they can sense changes in the surroundings.

  19. Induced caving by blasting: innovative experiments in blasting gallery panels of underground coal mines of India

    Energy Technology Data Exchange (ETDEWEB)

    Roy, P.P.; Sawmliana, C.; Bhagat, N.K.; Madhu, M. [CMRI, Dhanbad (India). Blasting Dept.

    2003-04-01

    Induced caving by blasting during depillaring of panels in underground coal mines has received limited attention. This technique has become an integral part of a mining operation known as the blasting gallery (BG) method in India. Systematical deep hole (16-30 m) blasting has been successfully carried out from underground split galleries in BG panels. A study of drilling and blasting parameters, gas hazards, strata behaviour and ground vibration was undertaken as part of a research project for the Indian Ministry of Coal and Mines. Strata behaviour during blasting and ground movements were critically investigated. All experiments were conducted using newly developed explosive and detonating cord systems. A new blast damage index is proposed for damage assessment of the underground roof and pillars of BG panels. Useful mathematical formulas are described as an aid to future design.

  20. High-Q MgF₂ whispering gallery mode resonators for refractometric sensing in aqueous environment.

    Science.gov (United States)

    Sedlmeir, Florian; Zeltner, Richard; Leuchs, Gerd; Schwefel, Harald G L

    2014-12-15

    We present our experiments on refractometric sensing with ultrahigh-Q, crystalline, birefringent magnesium fluoride (MgF₂) whispering gallery mode resonators. The difference to fused silica which is most commonly used for sensing experiments is the small refractive index of MgF₂ which is very close to that of water. Compared to fused silica this leads to more than 50% longer evanescent fields and a 4.25 times larger sensitivity. Moreover the birefringence amplifies the sensitivity difference between TM and TE type modes which will enhance sensing experiments based on difference frequency measurements. We estimate the performance of our resonators and compare them with fused silica theoretically and present experimental data showing the interferometrically measured evanescent field decay and the sensitivity of mm-sized MgF₂ whispering gallery mode resonators immersed in water. These data show reasonable agreement with the developed theory. Furthermore, we observe stable Q factors in water well above 1 × 10⁸.

  1. White-Light Whispering Gallery Mode Optical Resonator System and Method

    Science.gov (United States)

    Matsko, Andrey B. (Inventor); Savchenkov, Anatoliy A. (Inventor); Maleki, Lute (Inventor)

    2009-01-01

    An optical resonator system and method that includes a whispering-gallery mode (WGM) optical resonator that is capable of resonating across a broad, continuous swath of frequencies is provided. The optical resonator of the system is shaped to support at least one whispering gallery mode and includes a top surface, a bottom surface, a side wall, and a first curved transition region extending between the side wall and the top surface. The system further includes a coupler having a coupling surface which is arranged to face the transition region of the optical resonator and in the vicinity thereof such that an evanescent field emitted from the coupler is capable of being coupled into the optical resonator through the first curved transition region

  2. Physics. Creating and probing electron whispering-gallery modes in graphene.

    Science.gov (United States)

    Zhao, Yue; Wyrick, Jonathan; Natterer, Fabian D; Rodriguez-Nieva, Joaquin F; Lewandowski, Cyprian; Watanabe, Kenji; Taniguchi, Takashi; Levitov, Leonid S; Zhitenev, Nikolai B; Stroscio, Joseph A

    2015-05-01

    The design of high-finesse resonant cavities for electronic waves faces challenges due to short electron coherence lengths in solids. Complementing previous approaches to confine electronic waves by carefully positioned adatoms at clean metallic surfaces, we demonstrate an approach inspired by the peculiar acoustic phenomena in whispering galleries. Taking advantage of graphene's gate-tunable light-like carriers, we create whispering-gallery mode (WGM) resonators defined by circular pn junctions, induced by a scanning tunneling probe. We can tune the resonator size and the carrier concentration under the probe in a back-gated graphene device over a wide range. The WGM-type confinement and associated resonances are a new addition to the quantum electron-optics toolbox, paving the way to develop electronic lenses and resonators.

  3. Spectral Singularities and Whispering Gallery Modes of a Cylindrical Gain Medium

    OpenAIRE

    Mostafazadeh, Ali; Sarısaman, Mustafa

    2013-01-01

    PHYSICAL REVIEW A 87, 063834 (2013) Spectral singularities and whispering gallery modes of a cylindrical gain medium Ali Mostafazadeh* and Mustafa Sarısaman Department of Mathematics, Koc¸ University, Sarıyer 34450, Istanbul, Turkey (Received 11 February 2013; published 20 June 2013) Complex scattering potentials can admit scattering states that behave exactly like a zero-width resonance. Their energy is what mathematicians call a spectral singularity. This phenomenon admits...

  4. Whispering-gallery microcavity semiconductor lasers suitable for photonic integrated circuits and optical interconnects

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The characteristics of whispering-gallery-like modes in the equilateral triangle and square microresonators are introduced,including directional emission triangle and square microlasers connected to an output waveguide.We propose a photonic interconnect scheme by connecting two directional emission microlasers with an optical waveguide on silicon integrated circuit chip.The measurement indicates that the triangle microlasers can work as a resonance enhanced photodetector for optical interconnect.

  5. Art Appreciation

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    Zhuo Dehui graduated from Guangzhou Academy of Fine Arts in 1973 with a specialty in lacquer painting, and shortly thereafter began teaching at the school. Zhuo has conducted research and actively created decorative art for many decades, and has often led groups of students deep into the areas inhabited by minority nationalities, The two paintings shown here represent his impressions and depictions of

  6. Art Photography

    OpenAIRE

    Bate, D.

    2015-01-01

    The book introduces the key themes central to the interactions between photography and art, from the earliest days of photography in the 1830s to the present day, examining the many ways in which photography has become central to the development of modern and contemporary art.

  7. Art Markets

    NARCIS (Netherlands)

    P.A. Arora (Payal); F.R.R. Vermeylen (Filip)

    2013-01-01

    textabstractThe advent of digitization has had a profound impact on the art market and its institutions. In this chapter, we focus on the market for visual arts as it finds its expression in (among other) paintings, prints, drawings, photographs, sculpture and the like. These artistic disciplines cl

  8. Coffee, Cake & Culture: Evaluation of an art for health programme for older people in the community.

    Science.gov (United States)

    Roe, Brenda; McCormick, Sheila; Lucas, Terri; Gallagher, Wendy; Winn, Andrea; Elkin, Sophie

    2016-07-01

    Arts for health initiatives and networks are being developed in a number of countries and an international literature is emerging on the evidence of their benefits to people's health, wellbeing and quality of life. Engagement in cultural and creative arts by older people can increase their morale and self-confidence and provides opportunities for social connection. Museums and galleries are increasingly required to justify their expenditure, reach and impact and some are working in partnership with local councils, hospitals, schools and communities to improve access to their collections. There is a body of literature emerging that describes such initiatives but empirical evidence of their benefits is less developed. This article reports an evaluation of an art for health initiative - Coffee, Cake & Culture organised and delivered by Whitworth Art Gallery and Manchester Museum in 2012 for older people living in a care home and a supported living facility. The study has identified the benefits and impacts of the arts for health programme and its feasibility for older people, with or without diagnosed memory loss - dementia, living in a care home or supported living facility and their care staff. The findings demonstrate there were benefits to the older people and their care staff in terms of wellbeing, social engagement, learning, social inclusion and creativity. These benefits were immediate and continued in the short term on their return home. The majority of older people and care staff had not previously been to the art gallery or museum and the programme encouraged creative arts and cultural appreciation which promoted social inclusion, wellbeing and quality of life. The programme is feasible and important lessons were identified for future planning. Further research involving partnerships of researchers, arts for health curators, artists, care staff, older people and their families is warranted.

  9. "Equality of Intelligences": Exploring the Barriers to Engagement in Modern and Contemporary Art through a Peer-to-Peer Workshop at Tate Modern

    Science.gov (United States)

    Sayers, Esther

    2014-01-01

    The data presented in this article explores the effect on pedagogy when inclusion initiatives are bound up with learning objectives. It explores the generation of critical thinking skills in learning programmes at Tate Modern. Effective art education empowers young people to take a critical stance and in gallery education a decision has to be…

  10. Opening New Doors: Hands-On Participation Brings a New Audience to the Clay Studio. Wallace Studies in Building Arts Audiences

    Science.gov (United States)

    Harlow, Bob; Heywood, Tricia

    2015-01-01

    This case study examines how The Clay Studio, a ceramic-arts studio, gallery and shop in Philadelphia, attracted younger audiences to its workshops and exhibits. In 2007, the studio became concerned that its audience was getting older and few newcomers were signing up for classes or making purchases. The studio had to engage younger professionals…

  11. The Construction of an exhibition within architecture culture deconstructivist architecture, The Museum of Modern Art, 1988

    OpenAIRE

    2016-01-01

    The 1988 Deconstructivist Architecture exhibition at the Museum of Modern Art, New York, curated by Philip Johnson and Mark Wigley, was a minor exhibition that forced architecture to change directions. The tenweek exhibition showed ten projects by seven architects, staged in three galleries. Polemics surrounded the exhibition. These polemics, coupled with Johnson’s reputation and the extreme formal reduction of the show, fueled interest within the press. The exhibition recei...

  12. Arts Entrepreneurship

    DEFF Research Database (Denmark)

    Gartner, Bill

    2015-01-01

    Contribution to the opinion series “Perspectives” on arts entrepreneurship; how arts entrepreneurship is situated in relation to other disciplines or fields; what problems we are grappling with as scholars, practitioners, teachers, and artists; and what are the research questions we are attempting...... to answer individually or as a field. Under the headline “Perspectives on Arts Entrepreneurship, part 2”, are responses from: William B. Gartner, Professor of Entrepreneurship at Copenhagen Business School and California Lutheran University; Joseph Roberts, Director of the Coleman Fellows Program, Associate...

  13. Multispectral Analysis of Indigenous Rock Art Using Terrestrial Laser Scanning

    Science.gov (United States)

    Skoog, B.; Helmholz, P.; Belton, D.

    2016-06-01

    Multispectral analysis is a widely used technique in the photogrammetric and remote sensing industry. The use of Terrestrial Laser Scanning (TLS) in combination with imagery is becoming increasingly common, with its applications spreading to a wider range of fields. Both systems benefit from being a non-contact technique that can be used to accurately capture data regarding the target surface. Although multispectral analysis is actively performed within the spatial sciences field, its extent of application within an archaeological context has been limited. This study effectively aims to apply the multispectral techniques commonly used, to a remote Indigenous site that contains an extensive gallery of aging rock art. The ultimate goal for this research is the development of a systematic procedure that could be applied to numerous similar sites for the purpose of heritage preservation and research. The study consisted of extensive data capture of the rock art gallery using two different TLS systems and a digital SLR camera. The data was combined into a common 2D reference frame that allowed for standard image processing to be applied. An unsupervised k-means classifier was applied to the multiband images to detect the different types of rock art present. The result was unsatisfactory as the subsequent classification accuracy was relatively low. The procedure and technique does however show potential and further testing with different classification algorithms could possibly improve the result significantly.

  14. Art Appreciation

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    Luo Zhongli. now a professor with the Oil Painting Department in the Sichuan Academy of Fine Arts became famous in the Chinese painters’ circle in 1980 with his enormous painting, Father. This painting also led the rise

  15. Art & Alchemy

    DEFF Research Database (Denmark)

    -century portrayals of alchemists, and alchemy's tortured status as a forerunner of photography. Art and Alchemy indicates that alchemy indeed has several connections with art by examining some of the pictorial and literary books that disseminated alchemical symbols and ideas, delving into images, which in one way......Partly because of alchemy's dismissal from the Parnassus of rational sciences, the interplay between this esoteric knowledge and the visual arts is still a surprisingly neglected research area. This collection of articles covering the time span from the Late Middle Ages to the twentieth century...... intends, however, to challenge the current neglect. Areas on which its twelve authors cast new light include alchemical gender symbolism in Renaissance, Mannerist and modernist art, alchemical ideas of transformation in Italian fifteenth-century landscape imagery, Netherlandish seventeenth...

  16. Rock Art

    OpenAIRE

    Huyge, Dirk

    2009-01-01

    Rock art, basically being non-utilitarian, non-textual anthropic markings on natural rock surfaces, was an extremely widespread graphical practice in ancient Egypt. While the apogee of the tradition was definitely the Predynastic Period (mainly fourth millennium BCE), examples date from the late Palaeolithic (c. 15,000 BCE) until the Islamic era. Geographically speaking, “Egyptian” rock art is known from many hundreds of sites along the margins of the Upper Egyptian and Nubian Nile Valley and...

  17. ART APPRECIATION

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    In Naive Girls, Zhang Nan portrays three country girls with brightly decorative colors commonly seen in Chinese folk art. Their individuality is portrayed with the contrasting colors of their clothing, yet the whole picture is harmonious. The naivete of country girls is distilled into art. Delight portrays a fishing girl drying fish in the open air. On her bamboo hat hang strings of fish. The background is painted with skills used in traditional Chinese water and ink painting.

  18. Guerilla Science: Outreach at music and art festival

    Science.gov (United States)

    Rosin, Mark

    2012-10-01

    Guerilla Science a non-profit science education organization that, since 2007, has brought live events to unconventional venues for science, such as music festivals, art galleries, banquets, department stores and theaters. Guerilla Science sets science free by taking it out of the lab and into the traditional domains of the arts. By producing events that mix science with art, music and play, they create unique opportunities for adult audiences to experience science in unorthodox ways, such as interactive events, games, live experiments, demonstrations and performances by academics, artists, musicians, actors, and professional science communicators. Much of Guerilla Science's work has focused on astrophysical and terrestrial plasmas, and this presentation will provide an overview of Guerilla Science's work in this area. Guerilla Science has produced over twenty events, receiving international media coverage, and directly reached over fifteen thousand members of the public.

  19. High-Q whispering gallery modes in a polymer microresonator with broad strain tuningHigh-Q whispering gallery modes in a polymer microresonator with broad strain tuning

    Institute of Scientific and Technical Information of China (English)

    ZHOU ZhongHao[1,3; SHU FangJie[1,2; SHEN Zhen[1,3; DONG ChunHua[1,3; GUO GuangCan[1,3

    2015-01-01

    We have reported the high-Q whispering gallery modes (WGMs) in a polydimethylsiloxane (PDMS) optical microresonators with broad tuning range. The PDMS microresonators are fabricated at the center of two collimating fiber tips, which can be controlled by the piezoelectric stage. Through stretching the fiber stem, the tuning range of WGMs are demonstrated more than 50 nm. Further investigations demonstrated that the WGM shift has a high force sensitivity (- 19.7 pm/p.N) of the gravitation when the microcavity is stretched by a weight. The theoretical analysis reveals that the high force sensitivity of polymer microresonator can be used for the weak force or height measurement.

  20. Trip Fuels Imagination of Art Students

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    THE colorful paintings exhibited at the China’s Art Gallery were done by the children’s painting class at the Beijing Children’s Palace. They project the innocence and joy of childhood. Little Artists Painting classes at the Children’s Palace started in 1987. To date nearly 1,000 primary school students have learned received basic painting skills. The teachers have developed a curriculum geared toward children aged 5-12. The children learn how to sketch, paint in watercolor and in oils. Many talented students have emerged from these classes to go on to win painting competitions at home and abyoad. Sun Enqi, 51, is a kind teacher who is serious about his work and has the kind of face that has been marked by the passing years. He has devoted his life to teaching children how to paint.

  1. Contemporary Romanian Art in the United States1

    Directory of Open Access Journals (Sweden)

    Altman Dana

    2014-08-01

    Full Text Available The article discusses the recent international interest in contemporary Romanian art and its growth in market share, with a focus on the United States. The theme is followed thorough in numerous museum exhibitions, increased collector following, art fair presence, gallery representation and auction activity initially in Europe and the United States. The phenomenon is discussed both in the context of the larger international movement conducive to the contemporary art price bubble, and in that of the local socio-economic changes. My chief interest lies in the factors leading up to the entry of post 1989 Romanian art in the global arena as a manifestation of market forces in the field. The analysis follows its grass roots local emergence through non-profit institutions, individual artists, small publications, low budget galleries, as well as the lack of contribution (with few notable exceptions of state institutions, while pointing out the national context of increasing deregulation of social support systems resulting in lack of focus on cultural manifestations. The conclusion is that the recent ascent of contemporary Romanian art (and coincidentally, the award winning contemporary Romanian cinematography is a fortuitous convergence of various factors, among which, increased international mobility and sharing. At the same time, it is also the result of the evolution of various individual artists that pursued a form of art rooted in Romanian artistic tradition but with a focus on the symbolic figurative. The result is a personal semiotics of raising the mundane to extraordinary levels that reconfigured the anxiety of entering a new system into an unmistakable and lasting visual language.

  2. High diversity and low specificity of chaetothyrialean fungi in carton galleries in a neotropical ant-plant association.

    Directory of Open Access Journals (Sweden)

    Maximilian Nepel

    Full Text Available New associations have recently been discovered between arboreal ants that live on myrmecophytic plants, and different groups of fungi. Most of the - usually undescribed - fungi cultured by the ants belong to the order Chaetothyriales (Ascomycetes. Chaetothyriales occur in the nesting spaces provided by the host plant, and form a major part of the cardboard-like material produced by the ants for constructing nests and runway galleries. Until now, the fungi have been considered specific to each ant species. We focus on the three-way association between the plant Tetrathylacium macrophyllum (Salicaceae, the ant Azteca brevis (Formicidae: Dolichoderinae and various chaetothyrialean fungi. Azteca brevis builds extensive runway galleries along branches of T. macrophyllum. The carton of the gallery walls consists of masticated plant material densely pervaded by chaetothyrialean hyphae. In order to characterise the specificity of the ant-fungus association, fungi from the runway galleries of 19 ant colonies were grown as pure cultures and analyzed using partial SSU, complete ITS, 5.8S and partial LSU rDNA sequences. This gave 128 different fungal genotypes, 78% of which were clustered into three monophyletic groups. The most common fungus (either genotype or approximate species-level OTU was found in the runway galleries of 63% of the investigated ant colonies. This indicates that there can be a dominant fungus but, in general, a wider guild of chaetothyrialean fungi share the same ant mutualist in Azteca brevis.

  3. Shadow art

    KAUST Repository

    Mitra, Niloy J.

    2009-01-01

    "To them, I said, the truth would be literally nothing but the shadows of the images." - Plato, The Republic Shadow art is a unique form of sculptural art where the 2D shadows cast by a 3D sculpture are essential for the artistic effect. We introduce computational tools for the creation of shadow art and propose a design process where the user can directly specify the desired shadows by providing a set of binary images and corresponding projection information. Since multiple shadow images often contradict each other, we present a geometric optimization that computes a 3D shadow volume whose shadows best approximate the provided input images. Our analysis shows that this optimization is essential for obtaining physically realizable 3D sculptures. The resulting shadow volume can then be modified with a set of interactive editing tools that automatically respect the often intricate shadow constraints. We demonstrate the potential of our system with a number of complex 3D shadow art sculptures that go beyond what is seen in contemporary art pieces. © 2009 ACM.

  4. 'The journey to Rye on the train' The Crypt Gallery and Arts in Healthcare NHS East Sussex

    OpenAIRE

    Mullaniff, Kathleen

    2015-01-01

    Kathleen presented a painting as a featured artist from the series 'Fade in Fade out'. Over the last few decades, green has become an ideological and political colour as never before. At other times in history it has been associated with a host of contradictory ideas, which range from evil superstition and bad luck to love rebirth and health. It has been a courtly colour, a romantic colour, a dangerous colour, and a symbol of fecundity. For their exhibition ‘The Language of Green’, SoC...

  5. Embedding plurality: exploring participatory practice in the development of a new permanent gallery

    Directory of Open Access Journals (Sweden)

    Katy Bunning

    2015-05-01

    Full Text Available Increasing numbers of museums and galleries worldwide have developed an array of working practices that might be termed 'participatory' or 'co-creative', which seek to involve visitors, non-visitors, community and interest groups with diverse forms of expertise and perspective in their activities. Frequently the central aim of such practices has been to strengthen relationships between a museum and its audiences through projects that are jointly conceived and developed with local communities. However, relatively little attention has been given to participatory practice within the work of larger institutions, particularly those with a national and international remit, reach and audience base, where participatory practices are adopted to enrich the development and content of new permanent displays (aimed at large and diverse audiences. Drawing on a single case study – the development of the permanent Information Age gallery at the Science Museum in London, which opened in 2014 – this paper aims to reflect upon the extent to which existing concepts, theories and approaches to participation and co-creation resonate with museum work of this kind. Unlike many participatory practices internationally, the range of projects and activities utilised in the development of Information Age were driven less by a desire to share authority and decision-making with communities outside the museum and more by a concern to foster involvement with diverse communities of interest in the making of a major gallery and to generate and embed plural perspectives on the objects and stories presented within it. This paper raises further questions around how participatory work is perceived, valued and shared across the sector.

  6. The emergence of new latitudes in the art world: the Latitude project and the insertion of Brazilian art in a global market

    Directory of Open Access Journals (Sweden)

    Bruna Wulff Fetter

    2014-12-01

    Full Text Available Based on the increasing participation of Brazilian contemporary art in the international market, this article aims to understand the role of the Latitude project as a major tool of internationalization of this production. Acting under the setting of public-private partnership, the Latitude project presents itself as a business platform (for galleries and also as a visibility one (for artists that range from assistance in exportation bureaucratic issues to organizingvisits of institution directors and international collectors to Brazilian museums, institutions, fairs and galleries. However, this type of partnership leads us to question the current public policies for the development of the sector, its sphere of action, results and actual beneficiaries.

  7. Quantum information transfer with nitrogen-vacancy centers coupled to a whispering-gallery microresonator

    CERN Document Server

    Li, Pengbo

    2010-01-01

    We propose an efficient scheme for the realization of quantum information transfer and entanglement with nitrogen-vacancy (NV) centers coupled to a high-Q microspherical resonator. We show that, based on the effective dipole-dipole interaction between the NV centers mediated by the whispering-gallery mode (WGM), quantum information can be transferred between the NV centers through Raman transitions combined with laser fields. This protocol may open up promising possibilities for quantum communications with the solid state cavity QED system.

  8. Tunable add-drop filter using an active whispering gallery mode microcavity

    CERN Document Server

    Monifi, Faraz; Yang, Lan

    2013-01-01

    An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator. Here, we show that introducing gain medium in the resonator and optically pumping it below the lasing threshold not only allows loss compensation to achieve similar and lower crosstalks but also tunability in bandwidth and add-drop efficiency. For an active ADF fabricated using an erbium-ytterbium co-doped microsphere, we achieved 24-fold enhancement in the intrinsic quality factor, 3.5-fold increase in drop efficiency, bandwidth tunability of 35 MHz and a crosstalk of only 2%.

  9. Coupled-mode induced transparency in aerostatically-tuned microbubble whispering gallery resonators

    CERN Document Server

    Yang, Yong; Ward, Jonathan; Chormaic, Síle Nic

    2015-01-01

    Coupled-mode induced transparency is realized in a single microbubble whispering gallery mode resonator. Using aerostatic tuning, we find that the pressure induced shifting rates are different for different radial order modes. A finite element simulation considering both the strain and stress effects shows a GHz/bar difference and this is confirmed by experiments. A transparency spectrum is obtained when a first order mode shifts across a higher order mode through precise pressure tuning. The resulting lineshapes are fitted with the theory. This work lays a foundation for future applications in microbubble sensing.

  10. Formation of whispering gallery modes by scattering of an electromagnetic plane wave by two cylinders

    Science.gov (United States)

    Abramov, Arnold; Kostikov, Alexander

    2017-03-01

    We report the effect of scattering of electromagnetic plane waves by two cylinders on whispering gallery mode (WGM) formation in a cylinder. WGM can occur because of the presence of additional cylinder scatterers at specific location, while WGMs can only form in a single cylinder for specific cylinder radius and/or wavelength values, the matching accuracy required would be much greater than that required in our model for the additional cylinders locations. Analysis of the general solution to the problem showed that the effect can be explained by the interference of waves scattered by additional cylinders and incident on the main cylinder.

  11. Whispering-gallery-mode microdisk lasers produced by femtosecond laser direct writing.

    Science.gov (United States)

    Ku, Jin-Feng; Chen, Qi-Dai; Zhang, Ran; Sun, Hong-Bo

    2011-08-01

    We report in this Letter fabrication of whispering-gallery-mode microdisk lasers by femtosecond laser direct writing of dye-doped resins. Not only is well-defined disk shape upheld on an inverted cone-shaped supporter, but the disk also exhibits significant lasing actions characteristic of an abrupt increase of light output and the significant narrowing of the spectral lines when the threshold is approached. This work shows that the laser micronanofabrication technology is not only applicable to passive micro-optical components, but also it may play an important role in fabrication of active optoelectronic devices and their integrated photonic circuits.

  12. Orchid bee (Hymenoptera: Apidae) community from a gallery forest in the Brazilian Cerrado.

    Science.gov (United States)

    Silva, Francinaldo S

    2012-06-01

    The orchid bees are a very important group of pollinators distributed in the Neotropics. Although a lot of studies concerning male euglossine bees have been done in this region, few works have so far been carried out in the Cerrado biome. This manuscript has the main objective to present the orchid bee community from a Gallery Forest in the Northeastern Brazilian Cerrado landscape, taking account the species composition, abundance, seasonality and hourly distribution. Male euglossine bees were collected monthly from October 2007 to May 2009, in the Reserva Florestal da Itamacaoca belonging to the Companhia de Agua e Esgoto do Maranhão, in Chapadinha municipality, Maranhão State. The scents eucalyptol, eugenol and vanillin were utilized, between 07:00 and 17:00hr, to attract the euglossine males. Cotton balls were dampened with the scents and suspended by a string on tree branches 1.5m above soil level, set 8m from one another. The specimens were captured with entomological nets, killed with ethyl acetate and transported to the laboratory to be identified. A total of 158 individuals and 14 species of bees were recorded. The genus Eulaema was the most representative group of euglossine bees in relation to the total number of the sampled individuals, accounting for 50.6% of bees followed by Euglossa (26.6%), Eufriesea (15.2%) and Exaerete (7.6%). The most frequent species were Eulaema nigrita (27.8%), Eulaema cingulara (19%) and Euglossa cordata (18.3%). Many species typical of forested environments were found in samples, like Euglossa avicula, Euglossa violaceifrons and Eulaema meriana, emphasizing the role played by the Gallery Forests as bridge sites to connect the two great biomes of Amazonia and Atlantic Forest. The occurrence of Exaerete guaykuru represents the second record of this species for the Neotropical region, and both records coming from the Gallery Forest zones. The male euglossine bees were sampled mainly in the dry season, where 62.5% of the

  13. Highly efficient generation of single-mode photon pairs using a crystalline whispering gallery mode resonator

    CERN Document Server

    Förtsch, Michael; Fürst, Josef U; Strekalov, Dmitry; Gerrits, Thomas; Stevens, Martin J; Sedlmeir, Florian; Schwefel, Harald G L; Nam, Sae Woo; Leuchs, Gerd; Marquardt, Christoph

    2014-01-01

    We report a highly efficient source of narrow-band photon pairs based on parametric down-conversion in a crystalline whispering gallery mode resonator. Remarkably, each photon of a pair is strictly emitted into a single spatial and temporal mode, as witnessed by Glaubers autocorrelation function. We explore the phase-matching conditions in spherical geometries, and determine the requirements of the single-mode operation. Understanding these conditions has allowed us to experimentally demonstrate a single-mode pair-detection rate of $0.97 \\cdot 10^6$ pairs/s per mW pump power per 20 MHz bandwidth without the need of additional filter cavities.

  14. Victorian era esthetic and restorative dentistry: an advertising trade card gallery.

    Science.gov (United States)

    Croll, Theodore P; Swanson, Ben Z

    2006-01-01

    A chief means of print advertising in the Victorian era was the "trade card." Innumerable products, companies, and services were highlighted on colorful chromolithographic trade cards, and these became desirable collectible objects which were pasted into scrapbooks and enjoyed by many families. Dentistry- and oral health-related subjects were often depicted on Victorian trade cards, and esthetic and restorative dentistry themes were featured. This review describes the history of advertising trade cards and offers a photographic gallery of dentistry-related cards of the era.

  15. Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide

    Science.gov (United States)

    Neilson, Jeffrey M

    2015-02-24

    A cylindrical waveguide with a mode converter transforms a whispering gallery mode from a gyrotron cylindrical waveguide with a helical cut launch edge to a quasi-Gaussian beam suitable for conveyance through a corrugated waveguide. This quasi-Gaussian beam is radiated away from the waveguide using a spiral cut launch edge, which is in close proximity to a first mode converting reflector. The first mode converting reflector is coupled to a second mode converting reflector which provides an output free-space HE11 mode wave suitable for direct coupling into a corrugated waveguide. The radiated beam produced at the output of the second mode converting reflector is substantially circular.

  16. Cascaded Brillouin lasing in monolithic barium fluoride whispering gallery mode resonators

    CERN Document Server

    Lin, Guoping; Saleh, Khaldoun; Martinenghi, Romain; Beugnot, Jean-Charles; Sylvestre, Thibaut; Chembo, Yanne K

    2015-01-01

    We report the observation of stimulated Brillouin scattering and lasing at 1550~nm in barium fluoride (BaF$_2$) crystal. Brillouin lasing was achieved with ultra-high quality ($Q$) factor monolithic whispering gallery mode (WGM) mm-size disk resonators. Overmoded resonators were specifically used to provide cavity resonances for both the pump and all Brillouin Stokes waves. Single and multiple Brillouin Stokes radiations with frequency shift ranging from $8.2$ GHz up to $49$ GHz have been generated through cascaded Brillouin lasing. BaF$_2$ resonator-based Brillouin lasing can find potential applications for high-coherence lasers and microwave photonics.

  17. Vertically-coupled Whispering Gallery Mode Resonator Optical Waveguide, and Methods

    Science.gov (United States)

    Matsko, Andrey B. (Inventor); Savchenkov, Anatolly A. (Inventor); Matleki, Lute (Inventor)

    2007-01-01

    A vertically-coupled whispering gallery mode (WGM) resonator optical waveguide, a method of reducing a group velocity of light, and a method of making a waveguide are provided. The vertically-coupled WGM waveguide comprises a cylindrical rod portion having a round cross-section and an outer surface. First and second ring-shaped resonators are formed on the outer surface of the cylindrical rod portion and are spaced from each other along a longitudinal direction of the cylindrical rod. The first and second ringshaped resonators are capable of being coupled to each other by way an evanescent field formed in an interior of the cylindrical rod portion.

  18. High-Q silk fibroin whispering gallery microresonator on a flexible chip

    CERN Document Server

    Xu, Linhua; Zhao, Guangming; Liu, Zhiwen; Yang, Lan

    2016-01-01

    We have experimentally demonstrated on-chip all silk fibroin whispering gallery mode microresonator by using the molding and solution casting technique. The quality factors of the fabricated silk protein microresonators are up to 0.9*10^5. A high-sensitivity thermal sensor was realized in this silk fibroin microtoroid with the sensitivity of 1.17 nm/K, 8 times higher than previous WGM resonantor based thermal sensors. This opens the way to fabricate the biodegradable and biocompatible protein based microresonators on a flexible chip for biophotonics applications in vivo.

  19. Spatiotemporal Lugiato-Lefever formalism for Kerr-comb generation in whispering-gallery-mode resonators

    Science.gov (United States)

    Chembo, Yanne K.; Menyuk, Curtis R.

    2013-05-01

    We demonstrate that frequency (Kerr) comb generation in whispering-gallery-mode resonators can be modeled by a variant of the Lugiato-Lefever equation that includes higher-order dispersion and nonlinearity. This spatiotemporal model allows us to explore pulse formation in which a large number of modes interact cooperatively. Pulse formation is shown to play a critical role in comb generation, and we find conditions under which single pulses (dissipative solitons) and multiple pulses (rolls) form. We show that a broadband comb is the spectral signature of a dissipative soliton, and we also show that these solitons can be obtained by using a weak anomalous dispersion and subcritical pumping.

  20. Highly tunable low-threshold optical parametric oscillation in radially poled whispering gallery resonators

    CERN Document Server

    Beckmann, T; Steigerwald, H; Sturman, B; Haertle, D; Buse, K; Breunig, I

    2010-01-01

    Tunability of optical parametric oscillation in a radially structured whispering gallery resonator made of lithium niobate is investigated experimentally and theoretically. With a 1.04-\\mu m pump wave, the signal and idler waves are tuned from 1.78 to 2.5 \\mu m -- including the point of degeneracy -- by varying the temperature between 20 and 62{\\deg}C. A weak off-centering of the radial domain structure extends considerably the tuning capabilities. The oscillation threshold lies in the mW-power range.

  1. Whispering gallery mode photoemission from self-assembled poly-para-phenylenevinylene microspheres

    Energy Technology Data Exchange (ETDEWEB)

    Kushida, Soh; Yamamoto, Yohei [Division of Materials Science and Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 (Japan); Braam, Daniel; Lorke, Axel [Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstraße 1, Duisburg, D-47048 (Germany)

    2015-12-31

    Poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMOPPV) self-assembles to form well-defined spheres with several micrometers in diameter upon addition of a methanol vapor into a chloroform solution of MDMOPPV. The single sphere of MDMOPPV with 5.7 µm diameter exhibits whispering gallery mode (WGM) photoemission upon excitation with focused laser beam. The periodic emission lines are characterized by transverse electric and magnetic WGMs, and Q-factor reaches ∼345 at the highest.

  2. Art Therapy

    DEFF Research Database (Denmark)

    Skov, Vibeke; Pedersen, Inge Nygaard

    2014-01-01

    Abstract Based on a Jungian approach, this article will introduce an integrative model to therapeutic change using art therapy methods as practical tools, with the aim of improving quality of life and in the prevention of depression. In a research study involving six participants, painting, clay......, was that participants gained a new understanding about their personal life. In addition, some participants were able to continue to use art therapy experiences as selfdevelopmental tools after the research study terminated. Jung’s description of the interactive relationship between the two living parts of the psyche...... work and drumming were used together with imagination and personal dialogues linked to the artwork. These art therapy processes attempted to combine the participant’s experience of inner and outer reality. The effect of gaining more knowledge about their inner reality using dreams and symbols...

  3. Art Academy

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Created in 1996 by Mauritians Anna Patten and Sanedhip Bhimjee,Art Academy has gained a high profile due to its dance creation Katha’zz.Mixing new styles with traditional Kathak,the academy produces visual poetry that keeps it busy traveling around the world. Last September,along with the Mauritian presidential delegation,Art Academy presented Chinese audiences a real taste of Mauritian culture. Choreographer,dancer and set designer Bhimjee spoke to ChinAfrica from Mauritius about Katha’zz and its fusion with Chinese folk music.

  4. Contemporary art in public-politic urban space

    Directory of Open Access Journals (Sweden)

    Danilović-Hristić Nataša

    2012-01-01

    Full Text Available '(…The discourse about public art is itself a political site - a site, that is, of contests over the meaning of democracy and, importantly, the meaning of the political.'' Rosalyn Deutsche The text is researching the significance of art compositions that are presented in unconventional way, outside of museums and galleries, displayed in the urban public spaces and specially dealing with criterias for evaluation and final election of appropriate locations and modern art masterpieces, their compatibility and forming special and unrepeatable ambients. Analyze is about the most suitable public spaces, which deserve or need art interventions. It gives overview of different critique attitudes connected with choise of art peaces, interpretation of their value and symbolism, as reaction of the citizens. No matter if their character is permanent or temporary art subjects can fundamentally change appearance and nature of space, give it new dimension, or design it in the different manner. The fact is that the public space is actually the politic realm, so all interventions require certan steps, from iniciatives to decisions making and realization. As case study of procedures is stated example of work of Commission for sculptures of Belgrade's City Assemble, that started in 2008, with a task to elect 10 art compositions and to opt for becomingly exibition locations, with verification of all urbanistic or technical possibilities.

  5. PHYTOSSOCIOLOGY AND DIAMETRIC ESTRUCTURE IN THE GALLERY FOREST OF PITOCO, IN THE ECOLOGICAL RESERVE OF IBGE, DF

    Directory of Open Access Journals (Sweden)

    Manoel Cláudio da Silva Júnior

    2005-06-01

    Full Text Available The gallery forest, in the cerrado region, has a very important function on the environmental and social equilibrium.Despite been protected by law, gallery forests have been systematically replaced by agriculture and other regional uses. One thousandtrees (DAP 5cm were sampled using point centered-quarter (PCQ method. Sampling lines were established, from the head to themouth of the stream and from the stream margins to the forest-cerrado border, of the Pitoco gallery forest, in the IBGE EcologicalReserve, in Federal District, Brazil. Results showed 99 species of 46 families in the area. The most important families were:Leguminosae, Vochysiaceae, Rubiaceae, Anacardiaceae, Euphorbiaceae, Lauraceae, Burseraceae, Moraceae, Annonaceae eSymplocaceae, while the most important species were: Callisthene major, Tapirira guianensis, Protium almecega, Copaifera langsdorffii,Sclerolobium paniculatum var. rubiginosum, Pseudolmedia guaranítica, Faramea cyanea, Emmotum nitens, Lamanonia ternata,Maprounea guianensis, excluding the group of dead trees which was ranked in the 5th position. Density and basal area were estimatedas 1971 trees.ha-1 and 38,8 m².ha-1 ,respectively. Diameter distribution showed a tendency to an inverted J curve revealing low levelsof disturbance in this gallery forest. A floristic comparison carried out with 21 gallery forests in the Federal District indicated Pitocogallery forest as a rich site including 99 (26,2% of the total of 378 species recorded, a Shannon & Weaver diversity index estimatedas 3,86 nats.ind-1 and Sørensen similarities ranging from 0,29 to 0,80 with DF gallery forests.

  6. Chicken Art

    Science.gov (United States)

    Bickett, Marianne

    2009-01-01

    In this article, the author describes how a visit from a flock of chickens provided inspiration for the children's chicken art. The gentle clucking of the hens, the rooster crowing, and the softness of the feathers all provided rich aural, tactile, visual, and emotional experiences. The experience affirms the importance and value of direct…

  7. Scanner Art

    Science.gov (United States)

    Jaworski, Joy; Murphy, Kris

    2009-01-01

    In this article, the authors describe how they incorporated environmental awareness into their art curriculum. Here, they describe a digital photography project in which their students used flatbed scanners as cameras. Their students composed their objects directly on the scanner. The lesson enabled students to realize that artists have voices…

  8. Art Appreciation

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    Cheng Lei has lived in an artistic environment since childhood. In 1991 she graduated from the Central Institute of Fine Arts in Beijing. She loves, raises and paints cats. Cheng is adept at revealing the beauty and intelligence of felines using light and neutral tones in her watercolors "In my paintings I’m more concerned with expressing my own feelings, my understanding of

  9. Art Lessons

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Art exhibitions in China are now an important way to engage with Africa THE African Museum at China’s Zhejiang Normal University(ZJNU) is the first of its kind on the Chinese mainland with the theme of African civilization.ZJNU is also the first Chinese university to set up a comprehensive institute of African studies.The museum was completed on

  10. Deconstructing the Children’s Art Pavilion

    Directory of Open Access Journals (Sweden)

    Chris Tucker

    2014-02-01

    Full Text Available This paper discusses the design, construction and eventual deconstruction of the Children’s Art Pavilion at the Newcastle Region Art Gallery in Australia. As a space for children to experiment with art, the Pavilion metaphorically engaged the verandah as a space that has historically (albeit minimally mediated the zone where inside and outside meet. Its process of deconstruction referenced the work of Gordon Matta-Clark, and was testament to how the architectural design process continues through this phase, albeit uninhibited by the need to create a functioning object. In the time leading up to its deconstruction, the Pavilion became perfectly functionless, while its form and architectural content remained critically intact. Cutting into its surface, as a continuation of the design process, framed the void. Security was replaced with instability, not just physically but emotionally. At this point, the ground became cliff, or broke against the surf, and indeterminacy destroyed the purpose of even the most elementary architectural space. The new construction immediately suggested the possibilities of another architecture. As an intriguing social and architectural experiment, undergone by a building that could have quietly been loaded into a bin within a few hours, this project illuminated the social responsibility invested within architecture.

  11. Balinese Art versus Global Art

    OpenAIRE

    Adrian Vickers

    2015-01-01

    AbstractThere are two reasons why “Balinese art” is not a global art form, firstbecause it became too closely subordinated to tourism between the 1950sand 1970s, and secondly because of confusion about how to classify“modern” and “traditional” Balinese art. The category of ‘modern’ artseems at first to be unproblematic, but looking at Balinese paintingfrom the 1930s to the present day shows that divisions into ‘traditional’,‘modern’ and ‘contemporary’ are anything but straight-forward. Indism...

  12. Dark-field imaging as a non-invasive method for characterization of whispering gallery modes in microdisk cavities

    CERN Document Server

    Baranov, D A; Shishkin, I I; Samusev, A K; Belov, P A; Bogdanov, A A

    2016-01-01

    Whispering gallery mode microdisk cavities fabricated by direct laser writing are studied using dark-field imaging and spectroscopy in the visible spectral range. {Dark-field imaging allows us to directly visualize the spatial intensity distribution of whispering gallery modes. We extract their azimuthal and radial mode indices from dark-field images, and find the axial mode number from the dispersion relation. The scattering spectrum obtained in the confocal arrangement provides information on the density of optical states in the resonator. The proposed technique is a simple non-invasive way to characterize the optical properties of microdisk cavities.

  13. Flow cytometer system for single-shot biosensing based on whispering gallery modes of fluorescent microspheres

    Science.gov (United States)

    Lessard, Reno; Rousseau-Cyr, Olivier; Charlebois, Maxime; Riviere, Christophe; Mermut, Ozzy; Allen, Claudine Nı.

    2013-02-01

    We report an innovative label-free biosensor based on statistical analysis of several whispering gallery modes spectral shifts in polystyrene fluorescent microspheres using a custom microflow cytometer. Whispering gallery modes analysis enables detection of nanometer-sized analytes showing promising possibilities for virus, bacteria and molecular detection. To demonstrate this, fluorophore-doped microspheres of the appropriate size parameter are mixed in an aqueous solution. Then, a syringe pump pushes the solution through a fiber optic flow cell where a laser beam illuminates the analysis area to excite the microspheres and their fluorescence is collected. This device provides a low-cost and user friendly solution that could enhance spectrum acquisition rates up to 5 spectra per second thanks to the considerable amount of microspheres flowing through the excitation area per unit time. Finally, the fluorescence spectra are statistically investigated using an instantaneous measurement of apparent refractive index algorithm to determine a reliable value for the refractive index of the environment since the exact radius of the microsphere scanned is unknown. This refractive index becomes an effective value for the local perturbation caused by inhomogeneities on the microsphere surface and hence, determines whether or not inhomogeneities, such as bacteria, are adsorbed by comparing to a control sample. Combining a flow cell with our detection algorithm, we reduce the period of a 50 microspheres experiment from 161 minutes to 14 minutes when the flow rate is 2000 µl/h and the microsphere concentration is 5 µsphere/µl.

  14. Shielding design of the linear accelerator at RAON: Accelerator tunnel and utility gallery

    Science.gov (United States)

    Kim, Suna; Kang, Bo Sun; Lee, Sangjin; Nam, Shinwoo; Chung, Yeonsei

    2015-10-01

    RAON is the first Korean heavy-ion accelerator for various rare-isotope experiments and will be constructed by the year of 2021. The building for the about 550-m-long superconducting linear accelerator at RAON has three divisions in the vertical layout: accelerator tunnel, intermediate tunnel, and utility gallery. One of the requirements for the building design is that the effective dose rate in the utility gallery should be well below the dose limit for workers. Other parts of the building underground are classified as high-radiation zones where access is strictly controlled. The radiation dose distribution in the building has been calculated by using the Monte Carlo transport code MCNPX including the radiation streaming effects through the intermediate tunnel and penetrating holes. We have applied a point beam loss model in which the continuous beam loss along the beam line is treated as an equivalent point loss with a simple target. We describe the details of the calculation and discuss the results.

  15. Optical method for measuring thermal accommodation coefficients using a whispering-gallery microresonator

    Science.gov (United States)

    Ganta, D.; Dale, E. B.; Rezac, J. P.; Rosenberger, A. T.

    2011-08-01

    A novel optical method has been developed for the measurement of thermal accommodation coefficients in the temperature-jump regime. The temperature dependence of the resonant frequency of a fused-silica microresonator's whispering-gallery mode is used to measure the rate at which the microresonator comes into thermal equilibrium with the ambient gas. The thermal relaxation time is related to the thermal conductivity of the gas under some simplifying assumptions and measuring this time as a function of gas pressure determines the thermal accommodation coefficient. Using a low-power tunable diode laser of wavelength around 1570 nm to probe a microsphere's whispering-gallery mode through tapered-fiber coupling, we have measured the accommodation coefficients of air, helium, and nitrogen on fused silica at room temperature. In addition, by applying thin-film coatings to the microsphere's surface, we have demonstrated that accommodation coefficients can be measured for various gases on a wide range of modified surfaces using this method.

  16. The BOSS Emission-Line Lens Survey. IV. : Smooth Lens Models for the BELLS GALLERY Sample

    CERN Document Server

    Shu, Yiping; Mao, Shude; Kochanek, Christopher S; Pérez-Fournon, Ismael; Oguri, Masamune; Montero-Dorta, Antonio D; Cornachione, Matthew A; Marques-Chaves, Rui; Zheng, Zheng; Brownstein, Joel R; Ménard, Brice

    2016-01-01

    We present \\textsl{Hubble Space Telescope} (\\textsl{HST}) F606W-band imaging observations of 21 galaxy-Ly$\\alpha$ emitter lens candidates in the Baryon Oscillation Spectroscopic Survey (BOSS) Emission-Line Lens Survey (BELLS) for GALaxy-Ly$\\alpha$ EmitteR sYstems (BELLS GALLERY) survey. 17 systems are confirmed to be definite lenses with unambiguous evidence of multiple imaging. The lenses are primarily massive early-type galaxies (ETGs) at redshifts of approximately $0.55$, while the lensed sources are Ly$\\alpha$ emitters (LAEs) at redshifts from 2 to 3. Although the \\textsl{HST} imaging data are well fit by smooth lens models consisting of singular isothermal ellipsoids in an external shear field, a thorough exploration of dark substructures in the lens galaxies is required. The Einstein radii of the BELLS GALLERY lenses are on average $60\\%$ larger than those of the BELLS lenses because of the much higher source redshifts which will allow a detailed investigation of the radius evolution of the mass profile...

  17. The Dynamics of Visual Art Dialogues: Experiences to Be Used in Hospital Settings with Visual Art Enrichment

    Directory of Open Access Journals (Sweden)

    Britt-Maj Wikström

    2011-01-01

    Full Text Available Objectives. Given that hospitals have environmental enrichment with paintings and visual art arrangement, it would be meaningful to develop and document how hospital art could be used by health professionals. Methods. The study was undertaken at an art site in Sweden. During 1-hour sessions, participants (=20 get together in an art gallery every second week five times. Results. According to the participants a new value was perceived. From qualitative analyses, three themes appear: raise association, mentally present, and door-opener. In addition 72% of the participants reported makes me happy and gives energy and inspiration, and 52% reported that dialogues increase inspiration, make you involved, and stimulate curiosity. Conclusion. The present study supported the view that visual art dialogue could be used by health care professionals in a structured manner and that meaningful art stimulation, related to a person’s experiences, could be of importance for the patients. Implementing art dialogues in hospital settings could be a fruitful working tool for nurses, a complementary manner of patient communication.

  18. Daryl Lindsay and the appreciation of indigenous art: no mere collection of interesting curiosities

    Directory of Open Access Journals (Sweden)

    Benjamin Thomas

    2011-06-01

    Full Text Available In an era when the acceptance of Indigenous art within our galleries is assumed confidently as self-evident, it is easy to overlook how such a remarkable transformation occurred almost within the space of a decade. Even more misunderstood is the prominent role Daryl Lindsay played in the early acceptance and legitimisation of Australian indigenous art. Within months of becoming director of the NGV, Lindsay prepared a major exhibition of primitive art, including Australian indigenous works, an event that became the defining catalyst for a cultural shift towards indigenous art. In the early 1960s, in the influential role of chair of the Commonwealth Art Advisory Board, Lindsay advocated for the inclusion of Australian Aboriginal art, chosen for aesthetic merit as a dedicated collecting stream in the future NGA. It was a decisive objective, and one that was a central tenet of his vision for Australian art. Yet it is clear that Lindsays role in encouraging the re-evaluation of Australian Indigenous art remains poorly understood within the field of Australian gallery practice. Even within recent years, art historians have misattributed later events as being the catalyst for change, either positioning Lindsay as a reactionary late in his term as director, or placing him outside the formative years of the shift in attitude altogether. This paper explores Lindsays young adult experiences in Central Australia, the backdrop for his empathy with Australian Indigenous culture, and the remarkable shift in Australian Art Museum practice undertaken during his directorship that saw Indigenous artefacts exhibited and appreciated for their artistic merit.

  19. Brilliant! New Art from London, Walker Art Center, 1995–96

    Directory of Open Access Journals (Sweden)

    Richard Flood

    2016-07-01

    Full Text Available There can be little doubt that the accepted origins of the Young British Artists (YBAs began with Freeze, the exhibition organized by Damian Hirst in 1988. It was packed with graduates of Goldsmiths College where the artist and educator Michael Craig-Martin had recently revamped the curriculum to allow students to choose from a buffet of courses, rather than using the prix fixe menu. Hirst turned out to be a natural entrepreneur and guided his fellow Goldsmiths’ graduates into the public eye well before the traditional art world machinations would have allowed. After Freeze came Modern Medicine, spearheaded by Hirst, Carl Freedman, and Billee Sellman, and East Country Yard Show, devised by Sarah Lucas and Henry Bond, both in 1990. A year later, the Serpentine Gallery endorsed what was beginning to feel something like a movement in its Broken English exhibition, overseen by Hirst.

  20. Raman-gain induced loss-compensation in whispering-gallery-microresonators and single-nanoparticle detection with whispering-gallery Raman-microlasers

    CERN Document Server

    Ozdemir, Sahin Kaya; Yang, Xu; Peng, Bo; Yilmaz, Huzeyfe; He, Lina; Monifi, Faraz; Long, Gui Lu; Yang, Lan

    2014-01-01

    Recently optical whispering-gallery-mode resonators (WGMRs) have emerged as promising platforms to achieve label-free detection of nanoscale objects and to reach single molecule sensitivity. The ultimate detection performance of WGMRs are limited by energy dissipation in the material they are fabricated from. Up to date, to improve detection limit, either rare-earth ions are doped into the WGMR to compensate losses or plasmonic resonances are exploited for their superior field confinement. Here, we demonstrate, for the first time, enhanced detection of single-nanoparticle induced mode-splitting in a silica WGMR via Raman-gain assisted loss-compensation and WGM Raman lasing. Notably, we detected and counted individual dielectric nanoparticles down to a record low radius of 10 nm by monitoring a beatnote signal generated when split Raman lasing lines are heterodyne-mixed at a photodetector. This dopant-free scheme retains the inherited biocompatibility of silica, and could find widespread use for sensing in bio...

  1. ARTS@CERN Dance Session At Restaurant 1

    CERN Multimedia

    Anna Pantelia

    2012-01-01

    Walls and floors are the surfaces on which the German ar5st Gerhard Mayer draws large scale works. From art galleries to public buildings in Europe and the US, including even churches, Gerhard Mayer makes site specific drawings, with energe5c flowing lines of ink. He is par5cularly aEracted to drawing clouds, twisted swirls , shapes and eddies, reflec5ng flow in the micro and macro world. He also works in sculpture and pain5ng too – crea5ng complex puzzles and collages with an intensity reminiscent of Brueghel. On the occasion of his visit to CERN curated by Arts@CERN, Gerhard Mayer will talk about his love of drawing, his aErac5on to making work in public spaces and present his work for Nürnbergs Neues Museum called LHC. See examples of Gerhard Mayer’s work here hEp://www.gerhard-­‐mayer.com/

  2. Guerilla Science: Mixing Science with Art, Music and Play

    Science.gov (United States)

    Rosin, Mark; Koski, Olivia; Science, Guerilla

    2013-01-01

    Guerilla Science is an international organization at the boundaries of adult/teen science education and live entertainment. Dedicated to science by stealth we mix science with art, music and play in unconventional environments like music festivals, art galleries, banquets, department stores and theaters. Over the last five years, Guerilla Science has impacted over 11 thousand members of the public and worked with more than one hundred science-partners. Findings from three external evaluations confirm that these events have been successful, and Guerilla Science has been featured in international media including Wired, Scientific American, Getty Images, and the BBC. In this presentation, the US director, Mark Rosin, will discuss Guerilla Science's astronomical outreach efforts, including events like the Intergalactic Travel Bureau, Extra-Terrestrial Broadcasting, and Sex on other Planets. He will also discuss how to get involved with the project.

  3. The Dallas Pavilion: Contemporary Art and Urban Identity

    Directory of Open Access Journals (Sweden)

    Jaspar Joseph-Lester

    2014-02-01

    Full Text Available In the following statement, Jaspar Joseph-Lester and Michael Corris lay out the intentions of their project for the Dallas Pavilion at the 55th Venice Biennale in 2013. By contrast with the national pavilions for which the Biennale is renowned, this pavilion represented a city, and was published in the form of a book rather than temporarily staged on the interior of a building. Available to visitors from a stall placed just outside the American pavilion in the Giardini, this little book is a curated selection of works and texts, intervening within the Biennale’s official structure of curated national pavilions. It colourfully surveys the expansive art world of Dallas’ artists, critics, curators, collectors, galleries, museums and educators, while raising questions about contemporary urban identity vis-à-vis an aging architectural apparatus such as Venice’s international art exposition.

  4. Reporting on What Jane Saw 2.0: Female Celebrity and Sensationalism in Boydell’s Shakespeare Gallery

    Directory of Open Access Journals (Sweden)

    Janine Barchas

    2015-03-01

    Full Text Available This essay reports on ongoing efforts to build an accurate digital model of John Boydell’s popular Shakespeare Gallery precisely as it looked in August 1796—when a 20-year-old Jane Austen visited London’s sites, staying within a ten-minute walk from the gallery. The essay argues for the substantial difference between studying Boydell’s pictures in a paper volume (whether as lists, illustrations in books, or engraved folio plates and viewing them as an exhibition of paintings on walls, albeit virtual ones. For example, the digital reconstruction illuminated commissions from several female participants in Boydell’s male-dominated gallery, especially Angelica Kauffman (1741-1807 and Anne Seymour Damer (1749-1828. In addition, the essay also recounts how the celebrity of model Emma Hart/Hamilton (1765-1815 safeguarded one Boydell painting from oblivion while The Shakespeare Gallery proved the site of a strange form of self-promotion practiced by actress Mary Wells (1762-1829. Our digital visualization of an historic exhibition in 1796 brought the controversial celebrity of a few women artists into focus. In sum, this essay shows DH methodology in action while sampling what might be gleaned when digital tools serve historical scholarship in the humanities.

  5. Rael Artel Gallery: Non-Profit Project Space : short tale of an experimental project's space tactics / Kiwa

    Index Scriptorium Estoniae

    Kiwa, pseud., 1975-

    2009-01-01

    Aastatel 2004-2008 Pärnus ja aastatel 2006-2008 Tartus tegutsenud Rael Artel Galeriist, mille looja ja moderaator oli Rael Artel. Galerii tegevus lõppes kunstialbumi "Hotell Pärnu : Rael Arel Gallery : Non Profit Project Space 2004-2008 / kontseptsioon ja toimetamine: Rael Artel" ilmumisega 2009. aastal

  6. Building a Community for Art and Geoscience

    Science.gov (United States)

    Eriksson, S. C.; Ellins, K. K.

    2014-12-01

    Several new avenues are in place for building and supporting a community of people interested in the art and geoscience connections. Although sessions advocating for art in teaching geoscience have been scattered through geoscience professional meetings for several decades, there is now a sustained presence of artists and geoscientists with their research and projects at the annual meeting of the American Geophysical Union. In 2011, 13 abstracts were submitted and, in 2013, 20 talks and posters were presented at the annual meeting. Participants have requested more ways to connect with each other as well as advocate for this movement of art and science to others. Several words can describe new initiatives to do this: Social, Collaborative, Connected, Informed, Networked, and Included. Social activities of informal dinners, lunches, and happy hour for interested people in the past year have provided opportunity for presenters at AGU to spend time getting to know one another. This has resulted in at least two new collaborative projects. The nascent Bella Roca and more established Geology in Art websites and their associated blogs at www.bellaroca.org and http://geologyinart.blogspot.com, respectively are dedicated to highlighting the work of artists inspired by the geosciences, connecting people and informing the community of exhibits and opportunities for collaboration. Bella Roca with its social media of Facebook (Bella Roca) and Twitter (@BellRocaGeo), is a direct outgrowth of the recent 2012 and 2013 AGU sessions and, hopefully, can be grown and sustained for this community. Articles in professional journals will also help inform the broader geoscience community of the benefit of engaging with artists and designers for both improved science knowledge and communication. Organizations such as Leonardo, the International Society for the Arts, Sciences and Technology, the Art Science Gallery in Austin, Texas also promote networking among artists and scientists with

  7. Art and Finance: Fine Art Derivatives

    Directory of Open Access Journals (Sweden)

    Francesco Strati

    2014-04-01

    Full Text Available This work is intended to introduce a new kind of asset, the so called art asset. This financial tool is an asset whose value is related to an art-work, and in particular to the artist reputation. It will be shown the evaluation of an art asset by using a particular kind of volatility, the α-hedging. This tool normalizes the prices volatility of the art-works of an artist (or an art-movement by a sentiment index referred to the Art Market. At last I shall show how the art assets’ values are related to an art-call option.

  8. Abundance and frugivory of the toco toucan (Ramphastos toco in a gallery forest in Brazil's Southern Pantanal

    Directory of Open Access Journals (Sweden)

    J. Ragusa-Netto

    Full Text Available Unlike other toucan species, the Toco toucan (Ramphastos toco - the largest Ramphastidae - usually inhabits dry semi-open areas. This conspicuous canopy frugivore uses a large home range that includes a variety of vegetation types, among which gallery forests are widely cited as important to this species. However, the factors relating to the occurrence of Toco toucans in such habitats are unclear. I studied the abundance of Toco toucans as well as the availability of fleshy fruit in a gallery forest in the southern Pantanal (sub-region of Miranda, Brazil, in order to assess the relationship between these parameters. Also, I examined toucan foraging activity to analyze its relationship with both toucan abundance and fruit availability. The presence of the Toco toucan was more common in the gallery forest from the middle to the end of the dry season and during the middle of the wet season. Toucans foraged for fleshy fruits, mainly Genipa americana, Ficus luschnatiana, and Cecropia pachystachya fruits, feeding mostly on G. americana (by far the favorite food resource and F. luschnatiana fruits during the dry season, while C. pachystachya fruits were important in the wet season. Toco toucans foraged particularly heavily (> 80% of foraging activity on G. americana fruits during the latter part of the dry season, when fleshy fruit availability declined sharply. Toco toucan abundance in the gallery forest was associated with the availability of the most commonly consumed fleshy fruits, and also with its foraging activity. This finding suggests that the Toco toucan moved to the gallery forest periodically in response to the availability of abundant food resources, especially the G. americana fruits widely available and exploited during the severely dry season. Therefore, these fruits potentially contribute to Toco toucan persistence in the South Pantanal during the harshest period of the year.

  9. Chaco Chachalaca (Ortalis canicollis, Wagler, 1830) feeding ecology in a gallery forest in the South Pantanal (Brazil).

    Science.gov (United States)

    Ragusa-Netto, J

    2015-01-01

    Cracids are generalist frugivores, which often exploit plant food resources such as flowers and leaves, mainly when fruit production declines. The Chaco chachalaca (Ortalis canicollis) is the most abundant cracid in the Pantanal (Brazil), and particularly common in the gallery forests. However, the factors related to their occurrence in this habitat type are unclear. In this study I describe the feeding habits and feeding niche breadth fluctuations of the Chaco chachalaca in relation to food resources abundance and diversity at the Miranda river gallery forest (Southern Pantanal). I also analyzed the relationships between Chaco chachalacas feeding activity and food resources abundance. This parameter (flowers and fruits) exhibited significant seasonal differences of abundance in which flowers were plentiful at the end of the dry, while fruits were abundant during the early wet season. However, food resources diversity to Chaco chachalacas exhibited no seasonal difference. Their feeding activity paralleled the availability of food resources, so that when some items were massively available an enhanced number of Chaco chachalacas foraged in the gallery forest, particularly during the prolonged dry season when they extensively used flowers and Genipa americana fruits. In fact, the Chaco chachalaca feeding niche breadth value presented low values in this period, while high values were common in the rest of the year. The flexible diet of this cracid, potentially favors their year round presence in the gallery forest, mainly during the prolonged dry season when the propensity for famine might be high. Since the Chaco chachalaca is among the largest and most abundant canopy frugivores in the gallery forest, it may contribute to forest regeneration, an underscored role due to the impact of annual floods and meandering dynamics on tree loss.

  10. Cavity ring-up spectroscopy for dissipative and dispersive sensing in a whispering gallery mode resonator

    CERN Document Server

    Yang, Yong; Kasumie, Sho; Ward, Jonathan M; Chormaic, Síle Nic

    2016-01-01

    In whispering gallery mode resonator sensing applications, the conventional way to detect a change in the parameter to be measured is by observing the steady state transmission spectrum through the coupling waveguide. Alternatively, cavity ring-up spectroscopy (CRUS) sensing can be achieved transiently. In this work, we investigate CRUS using coupled mode equations and find analytical solutions with a large spectral broadening approximation of the input pulse. The relationships between the frequency detuning, coupling gap and ring-up peak height are determined and experimentally verified using an ultrahigh \\textit{Q}-factor silica microsphere. This work shows that distinctive dispersive and dissipative transient sensing can be realised by simply measuring the peak height of the CRUS signal, which might improve the data collection rate.

  11. Tikutõmbeid kottpimedas galeriis = Striking matches in a pitch-dark gallery : [luuletused] / Artur Alliksaar

    Index Scriptorium Estoniae

    Alliksaar, Artur, 1923-1966

    2001-01-01

    Tekst eesti ja inglise k. A. Alliksaare lühibiograafia eesti ja inglise k. lk. 55. Sisu: Tikutõmbeid kottpimedas galeriis = Striking matches in a pitch-dark gallery ; "Olen määratusuur mets..." = "I am infinitely vast forest..." ; "Olen koredate külgedega kalju..." = "I am rough-sided cliff..." ; "Olen meri, millel puudub äär..." = "I am sea that knows no bounds..." ; "Liikumine on niivõrd liitunud mu loomusega..." = "Movement is so much part of me..." ; "Ma ei söandaks öelda, et olen rikas..." = "I would not claim that I am rich..." ; Pöördehetk = Turning point ; Kuigi on nii palju lilli... = Though there are so many flowers ; Antidolorosum

  12. Analysis of borehole expansion and gallery tests in anisotropic rock masses

    Science.gov (United States)

    Amadei, B.; Savage, W.Z.

    1991-01-01

    Closed-form solutions are used to show how rock anisotropy affects the variation of the modulus of deformation around the walls of a hole in which expansion tests are conducted. These tests include dilatometer and NX-jack tests in boreholes and gallery tests in tunnels. The effects of rock anisotropy on the modulus of deformation are shown for transversely isotropic and regularly jointed rock masses with planes of transverse isotropy or joint planes parallel or normal to the hole longitudinal axis for plane strain or plane stress condition. The closed-form solutions can also be used when determining the elastic properties of anisotropic rock masses (intact or regularly jointed) in situ. ?? 1991.

  13. Origin of optical losses in gallium arsenide disk whispering gallery resonators

    CERN Document Server

    Parrain, David; Wang, Guillaume; Guha, Biswarup; Santos, Eduardo Gil; Lemaitre, Aristide; Senellart, Pascale; Leo, Giuseppe; Ducci, Sara; Favero, Ivan

    2015-01-01

    Whispering gallery modes in GaAs disk resonators reach half a million of optical quality factor. These high Qs remain still well below the ultimate design limit set by bending losses. Here we investigate the origin of residual optical dissipation in these devices. A Transmission Electron Microscope analysis is combined with an improved Volume Current Method to precisely quantify optical scattering losses by roughness and waviness of the structures, and gauge their importance relative to intrinsic material and radiation losses. The analysis also provides a qualitative description of the surface reconstruction layer, whose optical absorption is then revealed by comparing spectroscopy experiments in air and in different liquids. Other linear and nonlinear optical loss channels in the disks are evaluated likewise. Routes are given to further improve the performances of these miniature GaAs cavities.

  14. Microtorus: a high-finesse microcavity with whispering-gallery modes.

    Science.gov (United States)

    Ilchenko, V S; Gorodetsky, M L; Yao, X S; Maleki, L

    2001-03-01

    We demonstrate a 165-mu;m oblate spheroidal microcavity with a free spectral range of 383.7 GHz (3.06 nm), a resonance bandwidth of 23 MHz (quality factor Q approximately 10(7)) at 1550 nm, and finesse F>/=10(4) . The highly oblate spheroidal dielectric microcavity combines a very high Q factor, typical of microspheres, with a vastly reduced number of excited whispering-gallery modes (by 2 orders of magnitude). The very large free spectral range in this novel microcavity-a few hundred gigahertz instead of a few gigahertz as in typical microspheres-is desirable for applications in spectral analysis, narrow-linewidth optical and rf oscillators, and cavity QED.

  15. Diversity and Structure of the Gama Gallery Forest in Central Brazil in 2009

    Directory of Open Access Journals (Sweden)

    Roberto Tramontina Araujo

    2016-06-01

    Full Text Available The objective of this study was to evaluate the diversity and structure of the tree community of the Gama gallery forest, in the Federal District, in 2009. A total of 151 permanent plots of 10×20 m were allocated continually along ten lines perpendicular to the watercourse. All individuals with diameter at breast height (DBH equal or greater than 10 cm were tagged and measured. In total, 114 species in 52 families and 96 genera were identified. The density was 643 ind.ha-1, the basal area was 31.52 m2.ha-1 and 13 species were frequently at least in 25% of the plots. The Shannon index was 3.91 nats.ind-1 and the Pielou index was 82%, expressing the good conservation condition and the high diversity of the vegetation. The diameter distribution curve showed an "inverted J" pattern.

  16. PENINGKATAN AKTIVITAS DAN HASIL BELAJAR AKUNTANSI MATERI LAPORAN KEUANGAN MELALUI METODE GALLERY WALK DUATI-DUATA

    Directory of Open Access Journals (Sweden)

    Nining Mariyaningsih

    2015-03-01

    Full Text Available In learning accounting, conventional learning models are still frequently used by the teacher. As a result, the learning become monotonous and it’s not maximum. The problem of this study is wheather through Gallery Walk Duati-Duata can improve the activity and learning outcomes of accounting students.This study was class action research which was designed into two main cycles. Each cycle consisted of four stages started from planning, acting, observing and reflecting. The result showed that : (1 Learning activities increase from 27,78% before cycle, 69,45% in first cycle and 93,88% in second cycle, (2 The learning outcomes increase, from 22,22% before siklus, 75% in first cycle and 94,44% in second cycle. Therefore the use of this methods could be one of the reference of teachers in implementing the learning process.

  17. Whispering gallery mode single nano-particle detection and sizing: the validity of the dipole approximation

    CERN Document Server

    Foreman, Matthew R; Treasurer, Eshan; Lopez, Jehovani; Arnold, Stephen

    2016-01-01

    Interactions between whispering gallery modes (WGMs) and small nanoparticles are commonly modelled by treating the particle as a point dipole scatterer. This approach is assumed to be accurate as long as the nanoparticle radius, $a$, is small compared to the WGM wavelength $\\lambda$. In this article, however, we show that the large field gradients associated with the evanescent decay of a WGM causes the dipole theory to significantly underestimate the interaction strength, and hence induced WGM resonance shift, even for particles as small as $a\\sim \\lambda/10$. To mitigate this issue we employ a renormalized Born approximation to more accurately determine nanoparticle induced resonance shifts and hence enable improved particle sizing. The domain of validity of this approximation is investigated and supporting experimental results are presented.

  18. Refractometric sensor based on whispering-gallery modes of thin capillarie.

    Science.gov (United States)

    Zamora, Vanessa; Díez, Antonio; Andrés, Miguel V; Gimeno, Benito

    2007-09-17

    Whispering-gallery modes resonances of submicron wall thickness capillaries exhibit very large wavelength shifts as a function of the refractive index of the medium that fills the inside. The sensitivity to refractive index changes is larger than in other optical microcavities as microspheres, microdisks and microrings. The outer surface where total internal reflection takes place remains always in air, enabling the measure of refractive index values higher than the refractive index of the capillary material. The fabrication of capillaries with submicron wall thickness has required the development of a specific technique. A refractometer with a response higher than 390 nm per refractive index unit is demonstrated. These sensors are readily compatible with microfluidic systems.

  19. Efficient single sideband microwave to optical conversion using an electro-optical whispering gallery mode resonator

    CERN Document Server

    Rueda, Alfredo; Collodo, Michele C; Vogl, Ulrich; Stiller, Birgit; Schunk, Gerhard; Strekalov, Dmitry V; Marquardt, Christoph; Fink, Johannes M; Painter, Oskar; Leuchs, Gerd; Schwefel, Harald G L

    2016-01-01

    Linking classical microwave electrical circuits to the optical telecommunication band is at the core of modern communication. Future quantum information networks will require coherent microwave-to-optical conversion to link electronic quantum processors and memories via low-loss optical telecommunication networks. Efficient conversion can be achieved with electro-optical modulators operating at the single microwave photon level. In the standard electro-optic modulation scheme this is impossible because both, up- and downconverted, sidebands are necessarily present. Here we demonstrate true single sideband up- or downconversion in a triply resonant whispering gallery mode resonator by explicitly addressing modes with asymmetric free spectral range. Compared to previous experiments, we show a three orders of magnitude improvement of the electro-optical conversion efficiency reaching 0.1% photon number conversion for a 10GHz microwave tone at 0.42mW of optical pump power. The presented scheme is fully compatible...

  20. Phase noise of whispering gallery photonic hyper-parametric microwave oscillators.

    Science.gov (United States)

    Savchenkov, Anatoliy A; Rubiola, Enrico; Matsko, Andrey B; Ilchenko, Vladimir S; Maleki, Lute

    2008-03-17

    We report on the experimental study of phase noise properties of a high frequency photonic microwave oscillator based on four wave mixing in calcium fluoride whispering gallery mode resonators. Specifically, the oscillator generates approximately 8.5 GHz signals with -120 dBc/Hz at 100 kHz from the carrier. The floor of the phase noise is limited by the shot noise of the signal received at the photodetector. We argue that the performance of the oscillator can be significantly improved if one uses extremely high finesse resonators, increases the input optical power, supersaturates the oscillator, and suppresses the residual stimulated Raman scattering in the resonator. We also disclose a method of extremely sensitive measurement of the integral dispersion of millimeter scale dielectric resonators.

  1. Barium fluoride whispering-gallery-mode disk-resonator with one billion quality-factor

    CERN Document Server

    Lin, Guoping; Henriet, Rémi; Jacquot, Maxime; Chembo, Yanne K

    2015-01-01

    We demonstrate a monolithic optical whispering gallery mode resonator fabricated with barium fluoride (BaF$_2$) with an ultra-high quality ($Q$) factor above $10^9$ at $1550$ nm, and measured with both the linewidth and cavity-ring-down methods. Vertical scanning optical profilometry shows that the root mean square surface roughness of $2$ nm is achieved for our mm-size disk. To the best of our knowledge, we show for the first time that one billion $Q$-factor is achievable by precision polishing in relatively soft crystals with mohs hardness of ~$3$. We show that complex thermo-optical dynamics can take place in these resonators. Beside usual applications in nonlinear optics and microwave photonics, high energy particle scintillation detection utilizing monolithic BaF$_2$ resonators potentially becomes feasible.

  2. 3-D density imaging with muon flux measurements from underground galleries

    Science.gov (United States)

    Lesparre, N.; Cabrera, J.; Marteau, J.

    2017-03-01

    Atmospheric muon flux measurements provide information on subsurface density distribution. In this study, muon flux was measured underground, in the Tournemire experimental platform (France). The objective was to image the medium between the galleries and the surface and evaluate the feasibility to detect the presence of discontinuities, for example, produced by secondary subvertical faults or by karstic networks. Measurements were performed from three different sites with a partial overlap of muon trajectories, offering the possibility to seek density variations at different depths. The conversion of the measured muon flux to average density values showed global variations further analysed through a 3-D nonlinear inversion procedure. Main results are the presence of a very low density region at the level of the upper aquifer, compatible with the presence of a karstic network hosting local cavities, and the absence of secondary faults. We discuss the validity of the present results and propose different strategies to improve the accuracy of such measurements and analysis.

  3. Dielectric tuning and coupling of whispering gallery modes using an anisotropic prism

    CERN Document Server

    Foreman, Matthew R; Schwefel, Harald G L; Leuchs, Gerd

    2016-01-01

    Optical whispering gallery mode (WGM) resonators are a powerful and versatile tool used in many branches of science. Fine tuning of the central frequency and line width of individual resonances is however desirable in a number of applications including frequency conversion, optical communications and efficient light-matter coupling. To this end we present a detailed theoretical analysis of dielectric tuning of WGMs supported in axisymmetric resonators. Using the Bethe-Schwinger equation and adopting an angular spectrum field representation we study the resonance shift and mode broadening of high $Q$ WGMs when a planar dielectric substrate is brought close to the resonator. Particular focus is given to use of a uniaxial substrate with an arbitrarily aligned optic axis. Competing red and blue resonance shifts ($\\sim 30$ MHz), deriving from generation of a near field material polarisation and back action from the radiation continuum respectively, are found. Anomalous resonance shifts can hence be observed depend...

  4. Spatiotemporal Model for Kerr Comb Generation in Whispering Gallery Mode Resonators

    CERN Document Server

    Chembo, Yanne K

    2012-01-01

    We establish an exact partial differential equation to model Kerr comb generation in whispering-gallery mode resonators. This equation is a variant of the Lugiato-Lefever equation that includes higher-order dispersion and nonlinearity. This spatio-temporal model, whose main variable is the total intracavity field, is significantly more suitable than the modal expansion approach for the theoretical understanding and the numerical simulation of wide-span combs. It allows us to explore pulse formation in which a large number of modes interact cooperatively. This versatile approach can be straightforwardly extended to include higher-order dispersion, as well as other phenomena like Raman, Brillouin and Rayleigh scattering. We demonstrate for the first time that when the dispersion is anomalous, Kerr comb generation can arise as the spectral signature of dissipative cavity solitons, leading to wide-span combs with low pumping.

  5. Soliton Formation in Whispering-Gallery-Mode Resonators via Input Phase Modulation

    CERN Document Server

    Taheri, Hossein; Wiesenfeld, Kurt; Adibi, Ali

    2014-01-01

    We propose a method for soliton formation in whispering-gallery-mode (WGM) resonators through input phase modulation. Our numerical simulations of a variant of the Lugiato-Lefever equation suggest that modulating the input phase at a frequency equal to the resonator free-spectral-range and at modest modulation depths provides a deterministic route towards soliton formation in WGM resonators without undergoing a chaotic phase. We show that the generated solitonic state is sustained when the modulation is turned off adiabatically. Our results support parametric seeding as a powerful means of control, besides input pump power and pump-resonance detuning, over frequency comb generation in WGM resonators. Our findings also help pave the path towards ultra-short pulse formation on a chip.

  6. Visible Photoluminescence from Cubic (3C) Silicon Carbide Microdisks Coupled to High Quality Whispering Gallery Modes

    CERN Document Server

    Radulaski, Marina; Müller, Kai; Lagoudakis, Konstantinos G; Zhang, Jingyuan Linda; Buckley, Sonia; Kelaita, Yousif A; Alassaad, Kassem; Ferro, Gabriel; Vučković, Jelena

    2014-01-01

    We present the design, fabrication and characterization of cubic (3C) silicon carbide microdisk resonators with high quality factor modes at visible and near infrared wavelengths (600 - 950 nm). Whispering gallery modes with quality factors as high as 2,300 and corresponding mode volumes V ~ 2 ({\\lambda}/n)^3 are measured using laser scanning confocal microscopy at room temperature. We obtain excellent correspondence between transverse-magnetic (TM) and transverse-electric (TE) polarized resonances simulated using Finite Difference Time Domain (FDTD) method and those observed in experiment. These structures based on ensembles of optically active impurities in 3C-SiC resonators could play an important role in diverse applications of nonlinear and quantum photonics, including low power optical switching and quantum memories.

  7. III-nitride tunable cup-cavities supporting quasi whispering gallery modes from ultraviolet to infrared

    Science.gov (United States)

    Shubina, T. V.; Pozina, G.; Jmerik, V. N.; Davydov, V. Yu.; Hemmingsson, C.; Andrianov, A. V.; Kazanov, D. R.; Ivanov, S. V.

    2015-12-01

    Rapidly developing nanophotonics needs microresonators for different spectral ranges, formed by chip-compatible technologies. In addition, the tunable ones are much in demand. Here, we present site-controlled III-nitride monocrystal cup-cavities grown by molecular beam epitaxy. The cup-cavities can operate from ultraviolet to near-infrared, supporting quasi whispering gallery modes up to room temperature. Besides, their energies are identical in large ’ripened’ crystals. In these cavities, the refractive index variation near an absorption edge causes the remarkable effect of mode switching, which is accompanied by the spatial redistribution of electric field intensity with concentration of light into a subwavelength volume. Our results shed light on the mode behavior in semiconductor cavities and open the way for single-growth-run manufacturing the devices comprising an active region and a cavity with tunable mode frequencies.

  8. Study On Planar Whispering Gallery Dielectric Resonators; 2, A Multiple-Band Device

    CERN Document Server

    Annino, G; Martinelli, M

    2002-01-01

    The basic theory underlying the realization of simple multiple-band non-homogeneous dielectric resonators, whose spectral response is the overlap of single-resonator frequency bands, is developed exploiting a general approach discussed in the previous companion paper. The limit frequencies of the proposed devices, given only by the dielectric properties of the involved materials, can differ in principle by several decades. Experimental confirmations have been obtained on a composite structure built up with teflon and polyethylene; as predicted by the theory, the overall band includes frequencies which range about from 20 GHz to more than 400 GHz, when high frequency resonances are selectively excited. The localization of the higher frequency radiation between the positive steps of the dielectric constant, which is the basic properties of these non-homogeneous resonators, has been experimentally verified by mapping the electromagnetic field intensity. Possible applications of multiple-band Whispering Gallery d...

  9. Yield enhancement in whispering gallery mode biosensors: microfluidics and optical forces

    CERN Document Server

    Khosla, Kiran; Knittel, Joachim; Bowen, Warwick P

    2010-01-01

    A microfluidic whispering gallery mode (WGM) biosensing system is proposed for enhanced delivery and detection of target molecules. A microtoroid resonator coupled to a tapered optical fiber is immersed within a microfluidic channel, and supplied with target molecules at various flow rates. We show through Monte Carlo simulations that the flow characteristics and resonantly enhanced optical forces of the sensor substantially improve both the sensing time and yield. When compared to a diffusion-limited sensing modality, the average time required to detect a single molecule is reduced from more than 100 minutes to less than 10 seconds, and the overall yield of the device is enhanced from less than 5% to a maximum of 70.6% for femtomolar concentrations of analyte.

  10. Phase-locking transition in Raman combs generated with whispering gallery mode resonators.

    Science.gov (United States)

    Lin, Guoping; Chembo, Yanne K

    2016-08-15

    We investigate the mechanisms leading to phase locking in Raman optical frequency combs generated with ultrahigh Q crystalline whispering gallery mode disk resonators. We show that several regimes can be triggered depending on the pumping conditions, such as single-frequency Raman lasing, multimode operation involving more than one family of cavity eigenmodes, and Kerr-assisted Raman frequency comb generation. The phase locking and coherence of the combs are experimentally monitored through the measurement of beat signal spectra. These phase-locked combs, which feature high coherence and wide spectral spans, are obtained with pump powers in the range of a few tens of mW. In particular, Raman frequency combs with multiple free-spectral range spacings are reported, and the measured beat signal in the microwave domain features a 3 dB linewidth smaller than 50 Hz, thereby indicating phase locking.

  11. Strike-slip faults imaging from galleries with seismic waveform imaging methods

    Science.gov (United States)

    Bretaudeau, F.; Gélis, C.; Leparoux, D.; Cabrera, J.; Côte, P.

    2011-12-01

    Deep argillaceous formations are potential host media for radioactive waste due to their physical properties such as low intrinsic permeability and radionuclide retention (Boisson et al 2001). The experimental station of Tournemire is composed of an old tunnel excavated in 1885 in a 250m thick Toarcien argilitte layer, and of several galleries excavated more recently in directions perpendicular and parallel to the tunnel. This station is operated by the French Institute for Radiological protection and Nuclear Safety (IRSN) in order to expertise possible projects of radioactive waste disposal in a geological clay formation. The presence of secondary strike-slip faults in argillaceous formations must be well assessed since they could change any rock properties such as permeability. The ones with small vertical offsets as observed in the station cannot be seen from the surface, indeed we investigate on new approaches to image them directly from the underground works. We investigate here on the potential of new imaging methods that take advantage of the full seismic waveforms in order to optimise the imaging performances: Full Waveform Inversion (FWI) and Reverse Time Migration (RTM). We try to assess the capacities and limits of those methods in this specific context, and to determine the optimum acquisition and processing parameters. The subvertical fault in the nearly homogeneous subhorizontal structure of the clay layer allows us to consider a 2D imaging problem with no anisotropy where the fault is surrounded by three galleries. The waveform inversion strategy used is based on the frequency domain formulation proposed by Pratt et al. (1990). Non linearity is mitigated by introducing sequentially information from 50Hz to 1000Hz and starting from an homogeneous medium as initial model. Preliminary tests on synthetic data (fig. 1) show the ability of FWI to quantitatively image the fault zone and illustrate the impact of the illumniation configuration. RTM suceeds to

  12. Defining Art Appreciation.

    Science.gov (United States)

    Seabolt, Betty Oliver

    2001-01-01

    Discusses the differences and goals of four areas: (1) art appreciation; (2) art history; (3) art aesthetics; and (4) art criticism. Offers a definition of art appreciation and information on how the view of art appreciation in education has changed over time. (CMK)

  13. Art Therapy Teaching as Performance Art

    Science.gov (United States)

    Moon, Bruce L.

    2012-01-01

    This viewpoint asserts that art therapy education is a form of performance art. By designing class sessions as performance artworks, art therapy educators can help their students become more fully immersed in their studies. This view also can be extended to conceptualizing each semester--and the entire art therapy curriculum--as a complex and…

  14. Art Supply Inventors. Children's Art Diary.

    Science.gov (United States)

    Szekely, George

    2001-01-01

    Discusses types of art materials that children enjoy using in their artworks. Explores the art materials such as tasty art supplies, such as candy; peeled supplies, such as pencil shavings; sticky art supplies, such as Band-Aids; and fast-food supplies, such as forks and spoons. (CMK)

  15. Demonstration of LED Retrofit Lamps at the Jordan Schnitzer Museum of Art

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Naomi J.

    2011-09-01

    The Jordan Schnitzer Museum of Art in Eugene, Oregon, houses a remarkable permanent collection of Asian art and antiquities, modern art, and sculpture, and also hosts traveling exhibitions. In the winter and spring of 2011, a series of digital photographs by artist Chris Jordan, titled "Running the Numbers," was exhibited in the Coeta and Donald Barker Special Exhibitions Gallery. These works graphically illustrate waste (energy, money, health, consumer objects, etc.) in contemporary culture. The Bonneville Power Administration and the Eugene Water and Electricity Board provided a set of Cree 12W light-emitting diode (LED) PAR38 replacement lamps (Cree LRP38) for the museum to test for accent lighting in lieu of their standard Sylvania 90W PAR38 130V Narrow Flood lamps (which draw 78.9W at 120V). At the same time, the museum tested LED replacement lamps from three other manufacturers, and chose the Cree lamp as the most versatile and most appropriate color product for this exhibit. The lamps were installed for the opening of the show in January 2011. This report describes the process for the demonstration, the energy and economic results, and results of a survey of the museum staff and gallery visitors on four similar clusters of art lighted separately by four PAR38 lamps.

  16. Towards art content in original graphic arts

    OpenAIRE

    2011-01-01

    Contemporary Graphic art defines numerous graphic art techniques; from classical original graphic art techniques to the new media techniques. The new media reproduction and communication capacity influences contemporary art works in such way that more attention is on non-artistic content, while artistic content with its visual efficiency becomes less important. Reproductibility is one of the non-artistic contents which plays a key role in original graphic arts, where it is a means of making o...

  17. Invisible waves and hidden realms: augmented reality and experimental art

    Science.gov (United States)

    Ruzanka, Silvia

    2012-03-01

    Augmented reality is way of both altering the visible and revealing the invisible. It offers new opportunities for artistic exploration through virtual interventions in real space. In this paper, the author describes the implementation of two art installations using different AR technologies, one using optical marker tracking on mobile devices and one integrating stereoscopic projections into the physical environment. The first artwork, De Ondas y Abejas (The Waves and the Bees), is based on the widely publicized (but unproven) hypothesis of a link between cellphone radiation and the phenomenon of bee colony collapse disorder. Using an Android tablet, viewers search out small fiducial markers in the shape of electromagnetic waves hidden throughout the gallery, which reveal swarms of bees scattered on the floor. The piece also creates a generative soundscape based on electromagnetic fields. The second artwork, Urban Fauna, is a series of animations in which features of the urban landscape become plants and animals. Surveillance cameras become flocks of birds while miniature cellphone towers, lampposts, and telephone poles grow like small seedlings in time-lapse animation. The animations are presented as small stereoscopic projections, integrated into the physical space of the gallery. These two pieces explore the relationship between nature and technology through the visualization of invisible forces and hidden alternate realities.

  18. How cultural capital, habitus and class influence the responses of older adults to the field of contemporary visual art.

    Science.gov (United States)

    Newman, Andrew; Goulding, Anna; Whitehead, Christopher

    2013-10-01

    This article explores the responses of 38 older people to contemporary visual art through the results of a 28-month study entitled, Contemporary Visual Art and Identity Construction: Wellbeing amongst Older People. A framework for the analysis is provided by previous work on the consumption of art and by Bourdieu's constructs of cultural capital, habitus and field. Five groups of older people, with a range of different backgrounds, were taken to galleries and their responses were recorded, transcribed and analysed. It is concluded that participants' responses are influenced by their cultural capital, habitus and class-which, in turn, are affected by their life course experiences. Those who could not recognise the field (e.g., did not view contemporary art as "art") created their own meanings that they associated with the artworks. Evidence indicates that group dynamics and class mobility are likewise important. Participants also used the experience to respond to real or anticipated age-associated deficits.

  19. Termite (Insecta, Isoptera assemblage of a gallery forest relic from the Chaco province (Argentina: taxonomic and functional groups

    Directory of Open Access Journals (Sweden)

    Godoy, M. C.

    2013-04-01

    Full Text Available Termite fauna of the gallery forest in the Colonia Benitez Reserve (Chaco province, Argentina were analyzed using the rapid diversity assessment protocol (100 x 2 m transects. Twelve species, 10 genera and two families (Kalotermitidae and Termitidae, were detected, comprising the four feeding groups recognized for termites. True soil–feeders (IV showed the highest species richness, and dead wood and grasses feeders (II had the highest relative abundance. The most frequently occupied microhabitats were dead wood pieces lying on the ground. These results indicate that the Reserve harbors a diverse termite community similar to the ‘monte fuerte’ isopteran fauna (91.6% shared species. Our findings also support the Reserve´s value as a well–preserved fragment of the original gallery forest and emphasize the need to promote its conservation.

  20. An ultra-narrow-band optical filter based on whispering-gallery-mode hybrid-microsphere-cavity

    Science.gov (United States)

    Wan, Hongdan; Zhu, Haohan; Liu, Linqian; Xu, Ji; Wang, Jin

    2016-10-01

    We demonstrate an ultra-narrow-band mode-selection method based on a hybrid-microsphere-cavity which consists of a coated silica microsphere. Optical field distribution and narrow-band transmission spectrum of the whispering gallery modes (WGM) are investigated by finite-difference time-domain method. WGM transmission spectra are measured for microsphere and tapered fibers with different diameters. A high refractive index layer coated on the microsphere-cavity make the Q factor increased, the transmission spectrum bandwidth compressed and the side-mode suppression ratio increased. Parameters of the hybrid-microsphere-cavity, namely, the coated shell thickness and its refractive index are optimized under different excitation light source as to investigate the whispering-gallery-modes' transmission spectrum. The 3dB bandwidth of the proposed filter can be less than MHz which will have great potential for applications in all-optical sensing and communication systems.

  1. High-Q MgF$_2$ whispering gallery mode resonators for refractometric sensing in aqueous environment

    CERN Document Server

    Sedlmeir, Florian; Leuchs, Gerd; Schwefel, Harald G L

    2014-01-01

    We present our experiments on refractometric sensing with ultrahigh-Q, crystalline, birefringent magnesium fluoride (MgF$_2$) whispering gallery mode resonators. The difference to fused silica which is most commonly used for sensing experiments is the small refractive index of MgF$_2$ which is very close to that of water. Compared to fused silica this leads to more than 50% longer evanescent fields and a 4.25 times larger sensitivity. Moreover the birefringence amplifies the sensitivity difference between TM and TE type modes which will enhance sensing experiments based on difference frequency measurements. We estimate the performance of our resonators and compare them with fused silica theoretically and present experimental data showing the interferometrically measured evanescent decay and the sensitivity of mm-sized MgF$_2$ whispering gallery mode resonators immersed in water. They show reasonable agreement with the developed theory. Furthermore, we observe stable Q factors in water well above $1 \\times 10^...

  2. High Q-factor Sapphire Whispering Gallery Mode Microwave Resonator at Single Photon Energies and milli-Kelvin Temperatures

    CERN Document Server

    Creedon, Daniel L; Farr, Warrick; Martinis, John M; Duty, Timothy L; Tobar, Michael E

    2011-01-01

    The microwave properties of a crystalline sapphire dielectric whispering gallery mode resonator have been measured at very low excitation strength (E/hf=1) and low temperatures (T = 30 mK). The measurements were sensitive enough to observe saturation due to a highly detuned electron spin resonance, which limited the loss tangent of the material to about 2e-8 measured at 13.868 and 13.259 GHz. Small power dependent frequency shifts were also measured which correspond to an added magnetic susceptibility of order 1e-9. This work shows that quantum limited microwave resonators with Q-factors > 1e8 are possible with the implementation of a sapphire whispering gallery mode system.

  3. Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors

    CERN Document Server

    Förtsch, Michael; Stevens, Martin J; Strekalov, Dmitry; Schunk, Gerhard; Fürst, Josef U; Vogl, Ulrich; Sedlmeir, Florian; Schwefel, Harald G L; Leuchs, Gerd; Nam, Sae Woo; Marquardt, Christoph

    2014-01-01

    We demonstrate a method to perform spectroscopy of near-infrared single photons without the need of dispersive elements. This method is based on a photon energy resolving transition edge sensor and is applied for the characterization of widely wavelength tunable narrow-band single photons emitted from a crystalline whispering gallery mode resonator. We measure the emission wavelength of the generated signal and idler photons with an uncertainty of up to 2 nm.

  4. Beyond the Gallery Forest: Contrasting Habitat and Diet in Lemur catta Troops at Bezà Mahafaly Special Reserve.

    Science.gov (United States)

    Yamashita, Nayuta; Sauther, Michelle L; Cuozzo, Frank P; Youssouf Jacky, Ibrahim Antho

    2015-01-01

    Ring-tailed lemurs have been studied intensively in the Parcel 1 gallery forest of Bezà Mahafaly Special Reserve. Here, we report on lemur groups in a mixture of deciduous dry forest and spiny forest just 5 km to the west. Compared to Parcel 1, Parcel 2 (P2) has a lower density of Tamarindus indica, a major dietary plant species for gallery forest lemurs. Recent studies in drier habitats have called into question the association of lemur density and tamarind presence. In order to address this question, we measured forest structure and composition of plant plots between parcels and conducted lemur feeding observations. The trees and shrubs within the parcels did not differ in height or diameter at breast height, but the frequencies of plant species that were common between parcels were significantly different. Numbers of feeding observations on foods common to both parcels did not differ, but their relative rankings within parcels did. Frequencies of food plants corresponded to earlier reports of lemur population densities. However, we found that the ring-tailed lemur diet is a mixture of plants that are eaten in abundance regardless of frequency and those that are locally available. In terms of their reliance on Tamarindus, P2 animals appear intermediate between those in gallery forests and nontamarind sites.

  5. The art of discovery

    Directory of Open Access Journals (Sweden)

    Susie J. Lee

    2009-06-01

    Full Text Available "The Art of Discovery" discusses an ambitious educational program taught by the artist which incorporated locative media, contemporary art, site specificity, and creative work as a proposal for the integration of art, technology and science.

  6. National ART Success Rates

    Science.gov (United States)

    ... ART and Birth Defects ART and Autism 2013 Assisted Reproductive Technology National Summary Report Recommend on Facebook Tweet Share ... live-birth rate? [PDF - 1.37MB] Section 2: ART Cycles using fresh nondonor eggs or embryos What ...

  7. The Liberal Arts and the Martial Arts.

    Science.gov (United States)

    Levine, Donald N.

    1984-01-01

    Liberal arts and the martial arts are compared from the perspective that courses of training in the martial arts often constitute exemplary educational programs and are worth examining closely. Program characteristics, individual characteristics fostered by them, the relationship between liberal and utilitarian learning, and the moral…

  8. Teaching Art with Art: Grotesque Visions.

    Science.gov (United States)

    Hubbard, Guy

    2001-01-01

    Discusses a type of visual art called grotesque art and includes four different examples of grotesque art: (1) the painting "Head of Medusa" by Peter Paul Rubens; (2) Rangda, the widow witch from Bali (Indonesia); (3) totem poles; and (4) grotesque sculptures from the Cathedral of Notre Dame (Paris, France). (CMK)

  9. Macroscopic Center-of-mass Cooling using Whispering Gallery Mode Resonances

    CERN Document Server

    Li, Ying Lia; Barker, P F

    2015-01-01

    We demonstrate simultaneous center-of-mass cooling of two coupled oscillators, consisting of a microsphere-cantilever and a tapered optical fiber. Excitation of a whispering gallery mode (WGM) of the microsphere, via the evanescent field of the taper, provides a transduction signal that continuously monitors the relative motion between these two microgram objects with a sensitivity of 3\\,pm. The cavity enhanced optical dipole force is used to provide feedback damping on the motion of the micron-diameter taper, whereas a piezo stack is used to damp the motion of the much larger (up to $ 180\\,\\mu$m in diameter), heavier (up to $1.5\\times 10^{-7}\\,$kg) and stiffer microsphere-cantilever. In each feedback scheme multiple mechanical modes of each oscillator can be cooled, and mode temperatures below 10\\,K are reached for the dominant mode, consistent with limits determined by the measurement noise of our system. This indicates stabilization on the $10^{-12}$ m level and is the first demonstration of using WGM reso...

  10. Method for predicting whispering gallery mode spectra of active spherical microresonators

    CERN Document Server

    Hall, Jonathan M M; Henderson, Matthew R; Francois, Alexandre; Reynolds, Tess; Riesen, Nicolas; Monro, Tanya M

    2014-01-01

    A full three-dimensional Finite-Difference Time-Domain (FDTD)-based toolkit is developed to simulate the whispering gallery modes of a microsphere in the vicinity of a dipole source, placed on the surface. This provides a guide for experiments that rely on coupling to active microspheres. The resultant spectra are compared to those of analytic models used in the field. In contrast to the analytic models, the FDTD method is able to collect flux from an arbitrary collection region, such as a disk-shaped region, analogous to an optical fibre. The flux collection time may also be altered to access transient phenomena that may not appear at long collection times. The customisability of the technique allows one to consider a variety of mode excitation scenarios, such as refractive index inhomogeneity in the material, and different resonator shapes, such as shells and ellipsoids. The coupling efficiency to specific modes within wavelength regions can thus be optimized, preselecting the desired optical properties pri...

  11. Biochemical component identification by light scattering techniques in whispering gallery mode optical resonance based sensor

    Science.gov (United States)

    Saetchnikov, Vladimir A.; Tcherniavskaia, Elina A.; Saetchnikov, Anton V.; Schweiger, Gustav; Ostendorf, Andreas

    2014-03-01

    Experimental data on detection and identification of variety of biochemical agents, such as proteins (albumin, interferon, C reactive protein), microelements (Na+, Ca+), antibiotic of different generations, in both single and multi component solutions under varied in wide range concentration are represented. Analysis has been performed on the light scattering parameters of whispering gallery mode (WGM) optical resonance based sensor with dielectric microspheres from glass and PMMA as sensitive elements fixed by spin - coating techniques in adhesive layer on the surface of substrate or directly on the coupling element. Sensitive layer was integrated into developed fluidic cell with a digital syringe. Light from tuneable laser strict focusing on and scattered by the single microsphere was detected by a CMOS camera. The image was filtered for noise reduction and integrated on two coordinates for evaluation of integrated energy of a measured signal. As the entrance data following signal parameters were used: relative (to a free spectral range) spectral shift of frequency of WGM optical resonance in microsphere and relative efficiency of WGM excitation obtained within a free spectral range which depended on both type and concentration of investigated agents. Multiplexing on parameters and components has been realized using spatial and spectral parameters of scattered by microsphere light with developed data processing. Biochemical component classification and identification of agents under investigation has been performed by network analysis techniques based on probabilistic network and multilayer perceptron. Developed approach is demonstrated to be applicable both for single agent and for multi component biochemical analysis.

  12. Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities

    CERN Document Server

    Peng, Bo; Lei, Fuchuan; Monifi, Faraz; Gianfreda, Mariagiovanna; Long, Gui Lu; Fan, Shanhui; Nori, Franco; Bender, Carl M; Yang, Lan

    2013-01-01

    Optical systems combining balanced loss and gain profiles provide a unique platform to implement classical analogues of quantum systems described by non-Hermitian parity-time- (PT-) symmetric Hamiltonians and to originate new synthetic materials with novel properties. To date, experimental works on PT-symmetric optical systems have been limited to waveguides in which resonances do not play a role. Here we report the first demonstration of PT-symmetry breaking in optical resonator systems by using two directly coupled on-chip optical whispering-gallery-mode (WGM) microtoroid silica resonators. Gain in one of the resonators is provided by optically pumping Erbium (Er3+) ions embedded in the silica matrix; the other resonator exhibits passive loss. The coupling strength between the resonators is adjusted by using nanopositioning stages to tune their distance. We have observed reciprocal behavior of the PT-symmetric system in the linear regime, as well as a transition to nonreciprocity in the PT symmetry-breaking...

  13. Robust Whispering-Gallery-Mode Microbubble Lasers from Colloidal Quantum Dots.

    Science.gov (United States)

    Wang, Yue; Ta, Van Duong; Leck, Kheng Swee; Tan, Beng Hau Ian; Wang, Zeng; He, Tingchao; Ohl, Claus-Dieter; Demir, Hilmi Volkan; Sun, Handong

    2017-03-21

    Microlasers hold great promise for the development of photonics and optoelectronics. Among the discovered optical gain materials, colloidal quantum dots (CQDs) have been recognized as the most appealing candidate due to the facile emission tunability and solution processability. However, to date, it is still challenging to develop CQD-based microlasers with low cost yet high performance. Moreover, the poor long-term stability of CQDs remains to be the most critical issue, which may block their laser aspirations. Herein, we developed a unique but generic approach to forming a novel type of a whispering-gallery-mode (WGM) microbubble laser from the hybrid CQD/poly(methyl methacrylate) (PMMA) nanocomposites. The formation mechanism of the microbubbles was unraveled by recording the drying process of the nanocomposite droplets. Interestingly, these microbubbles naturally serve as the high-quality WGM laser resonators. By simply changing the CQDs, the lasing emission can be tuned across the whole visible spectral range. Importantly, these microbubble lasers exhibit unprecedented long-term stability (over one year), sufficient for practical applications. As a proof-of-concept, the potential of water vapor sensing was demonstrated. Our results represent a significant advance in microlasers based on the advantageous CQDs and may offer new possibilities for photonics and optoelectronics.

  14. Ultrahigh Q whispering gallery mode electro-optic resonators on a silicon photonic chip.

    Science.gov (United States)

    Soltani, Mohammad; Ilchenko, Vladimir; Matsko, Andrey; Savchenkov, Anatoliy; Schlafer, John; Ryan, Colm; Maleki, Lute

    2016-09-15

    Crystalline whispering gallery mode (WGM) electro-optic resonators made of LiNbO3 and LiTaO3 are critical for a wide range of applications in nonlinear and quantum optics, as well as RF photonics, due to their remarkably ultrahigh Q(>108) and large electro-optic coefficient. Achieving efficient coupling of these resonators to planar on-chip optical waveguides is essential for any high-yield and robust practical applications. However, it has been very challenging to demonstrate such coupling while preserving the ultrahigh Q properties of the resonators. Here, we show how the silicon photonic platform can overcome this long-standing challenge. Silicon waveguides with appropriate designs enable efficient and strong coupling to these WGM electro-optic resonators. We discuss various integration architectures of these resonators onto a silicon chip and experimentally demonstrate critical coupling of a planar Si waveguide and an ultrahigh QLiTaO3 resonator (Q∼108). Our results show a promising path for widespread and practical applications of these resonators on a silicon photonic platform.

  15. High-power solid-state sapphire whispering gallery mode maser.

    Science.gov (United States)

    Creedon, Daniel L; Benmessaï, Karim; Tobar, Michael E; Hartnett, John G; Bourgeois, Pierre-Yves; Kersale, Yann; Le Floch, Jean-Michel; Giordano, Vincent

    2010-03-01

    We present new results on a cryogenic solid-state maser frequency standard, which relies on the excitation of whispering gallery (WG) modes within a doped monocrystalline sapphire resonator (alpha-Al2O3). Included substitutively within the highest purity HEMEX-grade sapphire crystal lattice are Fe2+ impurities at a concentration of parts per million, an unavoidable result of the manufacturing process. Mass conversion of Fe2+ to Fe3+ ions was achieved by thermally annealing the sapphire in air. Above-threshold maser oscillation was then excited in the resonator at zero applied DC magnetic field by pumping high-Q WG modes coincident in frequency with the electron spin resonance (ESR) energy levels of the Fe3+ spin population. A 2 stage annealing process was undertaken for a sapphire resonator with exceptionally low Fe3+ concentration, resulting in an improvement of 6 orders of magnitude in output power for this particular crystal, and exceeding the previous best implementation of our scheme in another crystal by nearly 20 dB. This represents an output signal 7 orders of magnitude more powerful than a typical commercial hydrogen maser. At this power level, we estimate a limit on the frequency stability of order 1 x 10(-17)/square root(tau) due to the Schawlow-Townes fundamental thermal noise limit.

  16. LOCAL DEFORMATION AND RHEOLOGICAL PARAMETERS BY MEASUREMENTS IN TALAYA STATION GALLERY (BAIKAL REGION

    Directory of Open Access Journals (Sweden)

    V. Yu. Timofeev

    2015-09-01

    Full Text Available Tilt measurements have been taken in the underground gallery at Talaya Seismological Station for almost three decades, from March 1985 till 2014. Based on such data, deformation curves were constructed and analysed in the frame of elastic and viscous-elastic models of the geological medium. From estimated annual deformation rates, it became possible to reveal deformation cycles ranging from 3 to 18 years with amplitudes up to 5 arc-seconds (2·10–5. For the bedrock in the Talaya stream valley, the elastic modulus was estimated at 20 GPa. In frame of the Kelvin viscoelastic model, the apparent viscosity of the medium was estimated at 1019 Pa·sec by deformation delay curve for 1989–2014 epoch. Observed vertical rates were used to estimate the size of the studied area (from 0.1 km to 6.0 km. The values estimated in our experimental investigation are used in a wide range of geophysical studies: modelling tectonic, co-seismic and post-seismic processes.

  17. Whispering Gallery Mode Resonances from Ge Micro-Disks on Suspended Beams

    Directory of Open Access Journals (Sweden)

    Abdelrahman Zaher Al-Attili

    2015-05-01

    Full Text Available Ge is considered to be one of the most promising materials for realizing full monolithic integration of a light source on a silicon (Si photonic chip. Tensile-strain is required to convert Ge into an optical gain material and to reduce the pumping required for population inversion. Several methods of strain application to Ge are proposed in literature, of which the use of free-standing beams fabricated by micro-electro-mechanical systems (MEMS processes are capable of delivering very high strain values. However, it is challenging to make an optical cavity within free-standing Ge beams, and here, we demonstrate the fabrication of a simple cavity while imposing tensile strain by suspension using Ge-On-Insulator (GOI wafers. Ge micro-disks are made on top of suspended SiO$_{2}$ beams by partially removing the supporting Si substrate. According to Raman spectroscopy, a slight tensile strain was applied to the Ge disks through the bending of the SiO2 beams. Whispering-Gallery-Mode (WGM resonances were observed from a disk with a diameter of 3um, consistent with the finite-domain time-difference simulations. The quality (Q factor was 192, and upon increasing the pumping power, the Q-factor was degraded due to the red-shift of Ge direct-gap absorption edge caused by heating.

  18. [Review on label-free optical bio-sensing technology based on whisper-gallery-mode].

    Science.gov (United States)

    Jiang, Jun-feng; Liu, Tie-gen; Li, Hai-wei; Hui, Rong-qing; Liu, Kuni; Zhang, Yi-mo

    2010-11-01

    Optical biosensors are becoming an important tool for drug research and life science, and the label-free optical biosensor based on whisper-gallery-mode (WGM) is reviewed in the present paper. The WGM-based sensors are categorized into three types according to the microcavity structure. The biosensor using microsphere got extensive research because of high quality factor, and its response to protein, virus, and bacteria had been studied. The models based on single photon resonant state and perturbation theory were established. The biosensor using microdisk was proposed early since it can make use of mature lithography technology; however, the quality factor was increased greatly only after the thermal reflow process was introduced and single molecule measurement was then realized. The biosensor using microring has simpler mode structure and materials such as polymer, silicon nitride and silicon-on-insulator had been used for sensor fabrication. As a 3-dimension expansion, sensor using microtube can combine the optical channel and fluidic channel, which attracting more and more attention.

  19. Integrating Nanostructured Artificial Receptors with Whispering Gallery Mode Optical Microresonators via Inorganic Molecular Imprinting Techniques.

    Science.gov (United States)

    Hammond, G Denise; Vojta, Adam L; Grant, Sheila A; Hunt, Heather K

    2016-06-15

    The creation of label-free biosensors capable of accurately detecting trace contaminants, particularly small organic molecules, is of significant interest for applications in environmental monitoring. This is achieved by pairing a high-sensitivity signal transducer with a biorecognition element that imparts selectivity towards the compound of interest. However, many environmental pollutants do not have corresponding biorecognition elements. Fortunately, biomimetic chemistries, such as molecular imprinting, allow for the design of artificial receptors with very high selectivity for the target. Here, we perform a proof-of-concept study to show how artificial receptors may be created from inorganic silanes using the molecular imprinting technique and paired with high-sensitivity transducers without loss of device performance. Silica microsphere Whispering Gallery Mode optical microresonators are coated with a silica thin film templated by a small fluorescent dye, fluorescein isothiocyanate, which serves as our model target. Oxygen plasma degradation and solvent extraction of the template are compared. Extracted optical devices are interacted with the template molecule to confirm successful sorption of the template. Surface characterization is accomplished via fluorescence and optical microscopy, ellipsometry, optical profilometry, and contact angle measurements. The quality factors of the devices are measured to evaluate the impact of the coating on device sensitivity. The resulting devices show uniform surface coating with no microstructural damage with Q factors above 10⁶. This is the first report demonstrating the integration of these devices with molecular imprinting techniques, and could lead to new routes to biosensor creation for environmental monitoring.

  20. Integrating Nanostructured Artificial Receptors with Whispering Gallery Mode Optical Microresonators via Inorganic Molecular Imprinting Techniques

    Directory of Open Access Journals (Sweden)

    G. Denise Hammond

    2016-06-01

    Full Text Available The creation of label-free biosensors capable of accurately detecting trace contaminants, particularly small organic molecules, is of significant interest for applications in environmental monitoring. This is achieved by pairing a high-sensitivity signal transducer with a biorecognition element that imparts selectivity towards the compound of interest. However, many environmental pollutants do not have corresponding biorecognition elements. Fortunately, biomimetic chemistries, such as molecular imprinting, allow for the design of artificial receptors with very high selectivity for the target. Here, we perform a proof-of-concept study to show how artificial receptors may be created from inorganic silanes using the molecular imprinting technique and paired with high-sensitivity transducers without loss of device performance. Silica microsphere Whispering Gallery Mode optical microresonators are coated with a silica thin film templated by a small fluorescent dye, fluorescein isothiocyanate, which serves as our model target. Oxygen plasma degradation and solvent extraction of the template are compared. Extracted optical devices are interacted with the template molecule to confirm successful sorption of the template. Surface characterization is accomplished via fluorescence and optical microscopy, ellipsometry, optical profilometry, and contact angle measurements. The quality factors of the devices are measured to evaluate the impact of the coating on device sensitivity. The resulting devices show uniform surface coating with no microstructural damage with Q factors above 106. This is the first report demonstrating the integration of these devices with molecular imprinting techniques, and could lead to new routes to biosensor creation for environmental monitoring.

  1. Real-Time Detection of Staphylococcus Aureus Using Whispering Gallery Mode Optical Microdisks

    Directory of Open Access Journals (Sweden)

    Hala Ghali

    2016-05-01

    Full Text Available Whispering Gallery Mode (WGM microresonators have recently been studied as a means to achieve real-time label-free detection of biological targets such as virus particles, specific DNA sequences, or proteins. Due to their high quality (Q factors, WGM resonators can be highly sensitive. A biosensor also needs to be selective, requiring proper functionalization of its surface with the appropriate ligand that will attach the biomolecule of interest. In this paper, WGM microdisks are used as biosensors for detection of Staphylococcus aureus. The microdisks are functionalized with LysK, a phage protein specific for staphylococci at the genus level. A binding event on the surface shifts the resonance peak of the microdisk resonator towards longer wavelengths. This reactive shift can be used to estimate the surface density of bacteria that bind to the surface of the resonator. The limit of detection of a microdisk with a Q-factor around 104 is on the order of 5 pg/mL, corresponding to 20 cells. No binding of Escherichia coli to the resonators is seen, supporting the specificity of the functionalization scheme.

  2. Optimally Coherent Kerr Combs Generated with Crystalline Whispering Gallery Mode Resonators for Ultrahigh Capacity Fiber Communications

    Science.gov (United States)

    Pfeifle, Joerg; Coillet, Aurélien; Henriet, Rémi; Saleh, Khaldoun; Schindler, Philipp; Weimann, Claudius; Freude, Wolfgang; Balakireva, Irina V.; Larger, Laurent; Koos, Christian; Chembo, Yanne K.

    2015-03-01

    Optical Kerr frequency combs are known to be effective coherent multiwavelength sources for ultrahigh capacity fiber communications. These combs are the frequency-domain counterparts of a wide variety of spatiotemporal dissipative structures, such as cavity solitons, chaos, or Turing patterns (rolls). In this Letter, we demonstrate that Turing patterns, which correspond to the so-called primary combs in the spectral domain, are optimally coherent in the sense that for the same pump power they provide the most robust carriers for coherent data transmission in fiber communications using advanced modulation formats. Our model is based on a stochastic Lugiato-Lefever equation which accounts for laser pump frequency jitter and amplified spontaneous emission noise induced by the erbium-doped fiber amplifier. Using crystalline whispering-gallery-mode resonators with quality factor Q ˜109 for the comb generation, we show that when the noise is accounted for, the coherence of a primary comb is significantly higher than the coherence of their solitonic or chaotic counterparts for the same pump power. In order to confirm this theoretical finding, we perform an optical fiber transmission experiment using advanced modulation formats, and we show that the coherence of the primary comb is high enough to enable data transmission of up to 144 Gbit /s per comb line, the highest value achieved with a Kerr comb so far. This performance evidences that compact crystalline photonic systems have the potential to play a key role in a new generation of coherent fiber communication networks, alongside fully integrated systems.

  3. Superpersistent currents and whispering gallery modes in relativistic quantum chaotic systems.

    Science.gov (United States)

    Xu, Hongya; Huang, Liang; Lai, Ying-Cheng; Grebogi, Celso

    2015-03-11

    Persistent currents (PCs), one of the most intriguing manifestations of the Aharonov-Bohm (AB) effect, are known to vanish for Schrödinger particles in the presence of random scatterings, e.g., due to classical chaos. But would this still be the case for Dirac fermions? Addressing this question is of significant value due to the tremendous recent interest in two-dimensional Dirac materials. We investigate relativistic quantum AB rings threaded by a magnetic flux and find that PCs are extremely robust. Even for highly asymmetric rings that host fully developed classical chaos, the amplitudes of PCs are of the same order of magnitude as those for integrable rings, henceforth the term superpersistent currents (SPCs). A striking finding is that the SPCs can be attributed to a robust type of relativistic quantum states, i.e., Dirac whispering gallery modes (WGMs) that carry large angular momenta and travel along the boundaries. We propose an experimental scheme using topological insulators to observe and characterize Dirac WGMs and SPCs, and speculate that these features can potentially be the base for a new class of relativistic qubit systems. Our discovery of WGMs in relativistic quantum systems is remarkable because, although WGMs are common in photonic systems, they are relatively rare in electronic systems.

  4. Astronomy Classroom Activities Using the ``Ultraviolet/Visible Sky Gallery" CD-ROM

    Science.gov (United States)

    Cheng, K.-P.; Angione, R.; Talbert, F.; Sievers, J.; Jang, C.

    1998-05-01

    The ``Ultraviolet/Visible Sky Gallery" CD-ROM we published in April 1997 contains hundreds of images of astronomical objects such as galaxies, cluster of galaxies, globular clusters, associations of stars, supernova remnants, planetary nebulae, and selected fields of the Large and Small Magellanic clouds. This CD is a unique dataset that combines science data from space and ground-based missions. All the ultraviolet (UV) images on the CD were observed by the Ultraviolet Imaging Telescope during the ASTRO-1 Space Shuttle mission, and the matching visible images were obtained by us from Kitt Peak, Cerro Tololo, and Mount Laguna Observatories. The view of the ``invisible" UV sky has lead to many important discoveries, such as previously undetected hot stars in globular clusters, starburst nuclei in barred spirals, and faint external dust arms in spiral galaxies. Our UV and visible comparisons have provided new insights on these cosmic phenomena. We have developed some educational exercises that make use of this CD. These curriculum-related activities are designed to be used interactively by students for understanding astronomical concepts. Each of these exercises has two versions, one for college and another for high school students. They will be fully tested then donated to the Astronomical Society of the Pacific along with our CD.

  5. Using whispering gallery mode micro lasers for biosensing within undiluted serum

    Science.gov (United States)

    Reynolds, Tess; François, Alexandre; Riesen, Nicolas; Turvey, Michelle E.; Nicholls, Stephen J.; Hoffmann, Peter; Monro, Tanya M.

    2016-11-01

    Although whispering gallery mode (WGM) biosensors have shown tremendous potential, they are still yet to find practical use as biomedical diagnostic tools. This is primarily due to the nature of the interrogation mechanism itself which relies on indirect measurement of the binding of a specific biomolecule onto the sensor through the associated refractive index change. Since nonspecific binding cannot be differentiated from the specific interaction of interest, this can result in a high rate of false positive readings when the detection is performed in complex biological samples. Here we show that this inherent limitation can be solved using a relatively simple approach. This approach involves the development of a self-referenced biosensor consisting of two almost identically sized dye-doped polystyrene microspheres placed on adjacent holes at the tip of a suspended core optical fiber. Here self-referenced biosensing is demonstrated with the detection of Neutravidin in undiluted human serum samples. The fiber allows remote excitation and collection of the WGMs of the microspheres in a dip sensing setting. By taking advantage of surface functionalization techniques, one microsphere acts as a dynamic reference, compensating for nonspecific binding events, while the other microsphere is functionalized to detect the specific interaction. The almost identical size allows the two spheres to have virtually identical refractive index sensitivity and surface area. This ensures their responses to nonspecific binding and environmental changes are almost identical, whereby any specific changes such as binding events, can be monitored via the relative movement between the two sets of WGM peaks.

  6. La "Historia del Arte" de Ernst Gombrich

    Directory of Open Access Journals (Sweden)

    Antón Capitel

    2012-12-01

    Full Text Available

    Resumen

    El texto es una crítica del libro de Ernst Gombrich “Historia del  Arte”, obra antigua y traducida a muchos idiomas, pero que en 2011 ha publicado la edición de bolsillo en castellano. La crítica no entra mucho en el contenido, sólo en algunos aspectos, y se centra en los comentarios acerca de la antología de la historia del arte universal que el autor hace. Así se critica el hecho de la poca presencia del arte español, en general, y sobre todo de la poca presencia de la colección española de pintura en el Museo del Prado, la mejor pinacoteca del mundo. También, de la poco acertada elección de algunos ejemplos y de la sobreabundancia de referencias al arte de carácter menor del Reino Unido o de Holanda. El autor deplora igualmente la falta de sentido de las referencias a la arquitectura a partir del barroco, y, en cuanto al contenido, al mantenimiento de la vieja y ofensiva tesis de la  supremacía del arte de los países protestantes sobre el de los católicos.

    Palabras clave

    historia del arte, arte, arquitectura, crítica, referencias

    Abstract

    The text is a critique of Ernst Gombrich´s book “History of Art”, old work translated into many languages, which in 2011 was published as a pocket edition in Spanish. Rather than providing  a criticism of the content, only certain aspects are mentioned, the critique is centered around comments on the author´s choice of anthology taken from the universal history of art. In this way not only does the lack of presence of Spanish art in general come under particular criticism, but most of all the feeble  representation of the Spanish collection of the Prado museum, the finest gallery in the world. Under scrutiny also come the  unwise choice of several examples and the overabundance of British and Dutch art of a minor character. Similarly, the author deplores

  7. Feasibility of Gallery Intake Systems for Seawater Reverse Osmosis Facilities along the Northern Red Sea Coast of Saudi Arabia

    KAUST Repository

    Dehwah, Abdullah

    2012-03-01

    The Kingdom of Saudi Arabia is dependent on desalination of seawater to provide new water supplies for the future. Desalination is expensive and it is very important to reduce the cost and lower the energy consumption. Most seawater reverse osmosis facilities use open-ocean intakes, which require extensive pre-treatment processes to remove particulate and biological materials that cause operating problems. An alternative intake is the subsurface system which utilizes the concept of riverbank filtration using wells or galleries and provides natural filtration to improve the quality of feedwater before it enters the desalination plant. This reduces operating cost and lowers energy consumption. Research was focused on evaluating gallery-type intakes (beach and seabed galleries) that could be used along the Northern Red Sea shoreline to provide a better quality feedwater for desalination. The geological characteristics of the visited sites were favorable for the development of seabed filter systems (offshore), but not for beach gallery intakes. The low wave energy along the shoreline and the presence of mud or rocky coasts made beach galleries infeasible. One of the potentially favorable sites for a seabed filter was located in the nearshore area at King Abdullah Economic City (KAEC). This site has a predominantly sandy offshore bottom with shallow water depths, and a low tide range. In addition, the bottom is always covered with water and contains soft limestone unit below the sand mantle that could be easy excavated to facilitate the construction of a seabed filter. About 50 sediment samples were collected from the site and laboratory measurements were performed on them. Grain size distribution, porosity and hydraulic conductivity measurements were performed on the sediment samples. In addition, six statistical methods were used to estimate the hydraulic conductivity values. Based on results of lab measurements, field observations, tide ranges and sediment types, it

  8. Fluids in motion: Contemporary artScience- inspiration and realization

    CERN Document Server

    Zabusky, Norman

    2013-01-01

    I examine contemporary work in fluids in motion to demonstrate strong connections between art, science and technology. In one burgeoning domain, falling liquid drops impacting solid substrates or pools it is valuable to compare how artists and scientists describe their goals and their use of high speed digital photography to capture and measure events. I also examine the use of devices beyond paint brushes to create pictures and views, including installations and projections from computer simulations. In particular, Ned Kahn whose installations in the public domain show various fluids in motion - water, sand, fog, fire as turbulent boundary layers, vortex rings, whirlpools, waterfalls, etc. Finally, I examine aspects of the role of digital technology and its utilization by artists, museums and galleries for innovative displays.

  9. Incorporation And Exploration Of Local Imageries And Identities In Malaysia's Graffiti Art

    Directory of Open Access Journals (Sweden)

    Sarena Abdullah

    2015-09-01

    Full Text Available The production of graffiti art in Malaysia can be traced back to the late 1990’s. Since then, graffiti art has beenembraced by local municipalities as well as the National Visual Art Gallery (NVAG in their public programming and activities. Despite these positive developments, how the local graffiti artists infused local imageries and indentities in their work had not been examined. The parallels between graffiti art practices and the development of modern art in Malaysia, made the emergence of forms  and themes that reflect local identity in graffiti art  not a surprise, as these were also the inherent issues explored by local artists in the domain of fine arts. This paper hence, discusses the different approaches taken by Malaysia’s graffiti artists, how they incorporate and explored their visual ideas rooted in hip hop culture and the New York City Subway graffiti, with local imageries and identities. This paper will also discuss the history and background of Malaysia’s graffiti art as well as how Malaysian graffiti artists employedvarious local imageries and identity.

  10. Technical feasibility of using gallery intakes for seawater RO facilities, northern Red Sea coast of Saudi Arabia: The King Abdullah Economic City site

    KAUST Repository

    Dehwah, Abdullah

    2013-02-13

    The Kingdom of Saudi Arabia is dependent on desalination of seawater to provide new water supplies for the future. Desalination is expensive and it is very important to reduce the cost and lower the energy consumption. Most seawater reverse osmosis facilities use open-ocean intakes, which require extensive pretreatment processes to remove particulate and biological materials that cause operating problems such as membrane fouling or shutdown during algal blooms. Subsurface systems, using the concept of riverbank filtration, can be used as intakes. These systems include wells of various designs and galleries that provide natural filtration and biological treatment to improve the quality of feed water before it enters the desalination plant. This reduces operating cost, lowers chemical and energy consumption, and reduces environmental impacts. Technical feasibility of gallery-type intakes, beach and seabed types, for use as intakes to seawater reverse osmosis (RO) facilities was evaluated along the northern Red Sea shoreline of Saudi Arabia. The geological characteristics of the offshore ocean bottom were found to be favorable for the development of seabed gallery systems, but the shoreline geology was not adequate for the development of beach gallery intakes. One of the potentially favorable sites for a seabed gallery system was located in the nearshore area at King Abdullah Economic City (KAEC). Detailed investigation of the site hydrology (tides and wave action), sediment grain size characteristics, and sediment hydraulic conductivity, and access for construction were assessed. It was determined that seabed gallery development is favorable at the site. Based on the seawater that has a salinity of about 41,000 mg/L and a conversion rate of 40%, a conservatively designed gallery cell with dimensions of 100 by 50 m would produce about 25,000 m3/day of filtered seawater and seven cells (6 primary and 1 standby) could support a 60,000 m3/day (permeate) seawater RO plant

  11. CERN Inspires Art in Major New Exhibition

    CERN Multimedia

    2001-01-01

    Signatures of the Invisible, an exhibition inspired by CERN, opened at the Atlantis Gallery in London on Thursday, 1 March before going on a world tour. The fruit of a close collaboration between CERN and the London Institute, the exhibition brings together works from many leading European contemporary artists. White wooden boxes on a grey floor... the lids opened, unveiling brilliant white light from a bunch of optical fibres carefully stuck together in the shape of a square. Another holds a treasure of lead glass surrounded by enigmatic black mirrors. What's it all about? Signatures of the Invisible, that's what, a joint project organised by the London Institute, one of the world's largest college of art, and our Laboratory. Damien Foresy from the EST workshop putting finishing touches to the spinning tops of French artist Jérôme Basserode. Monica Sand's boxes are just one of the many works based around materials used in particle detection at CERN that was admired at the opening o...

  12. Talking about a Christine Borland sculpture: effective empathy in contemporary anatomy art (and an emerging counterpart in medical training?).

    Science.gov (United States)

    Richardson, Craig; Borland, Christine

    2015-05-04

    This Introduction and interview discusses the poetical and empathic insights that are a key to the effectiveness of contemporary artist Christine Borland's practice and its relevance to the medical humanities, visual art research and medical students' training. It takes place in a context of intensive interest in reciprocity and conversation as well as expert exchange between the fields of Medicine and Contemporary Arts. The interview develops an understanding of medical research and the application of its historical resources and contemporary practice-based research in contemporary art gallery exhibitions. Artists tend not to follow prescriptive programmes towards new historical knowledge, however, a desire to form productive relationships between history and contemporary art practice does reveal practical advantages. Borland's research also includes investigations in anatomy, medical practices and conservation.

  13. Arts Education Beyond Art : Teaching Art in Times of Change

    NARCIS (Netherlands)

    van Heusden, Bernard; Gielen, Pascal

    2015-01-01

    People and societies thrive on a versatile and imaginative awareness. Yet the critical debate on arts education is still too often about the qualities of artefacts and technical skills, and tends to neglect issues such as the critical function of the arts in society, artistic cognition and cognitive

  14. Taking the Arts Seriously

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    what makes art special in an anthropologic and evolutionary biologic point of view. Cases on the emerging field of arts-in-business in Denmark.......what makes art special in an anthropologic and evolutionary biologic point of view. Cases on the emerging field of arts-in-business in Denmark....

  15. Art Therapy Verses Psychotherapy

    Science.gov (United States)

    Del Giacco, Maureen

    2009-01-01

    The purpose of my paper is to identify the difference between psychotherapy and art therapy. Then to introduce a technique within the field of art therapy that is relevant to neuro-plasticity Del Giacco Neuro Art Therapy. The paper identifies the importance of the amygdala and the hippocampus within the role of art therapy. Supporting…

  16. Art and Religion

    Science.gov (United States)

    Shusterman, Richard

    2008-01-01

    Since the nineteenth century's interest in "art for art's sake," many thinkers have argued that art would supplant traditional religion as the spiritual locus of the increasingly secular society of Western modernity. If art can capture the sort of spirituality, idealism, and expressive community of traditional religions but without being ensnared…

  17. When Art & Finance Collide

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Fine art and big finance are proving a profitable combination in China but questions of authenticity need to be addressed CHINA’S art market is on fire.As sales and prices break records,a new force has appeared in the market - organized art finance in the form of art trust funds and artwork exchanges.

  18. The Restoration of Paintings at the Beginning of the Nineteenth Century in the Imperial Gallery

    Directory of Open Access Journals (Sweden)

    Alice Hoppe-Harnoncourt

    2012-04-01

    Full Text Available Les tableaux de la collection impériale à Vienne ont subi différentes phases de restauration. Dans la plupart des cas, celles-ci sont en rapport avec des évènements dans l´histoire de la galerie. Autour de l´année 1800, les traitements avaient généralement pour fonction d’adapter les peintures au goût du jour : beaucoup de changements de formats peuvent être retracés jusqu’à cette date ou les années précédentes. En revanche, après les guerres napoléoniennes, les interventions étaient de nature différente : la plupart des tableaux sur bois de la galerie ont été parquetés durant cette période. Appliquée systématiquement, cette méthode était apparemment considérée comme une solution de conservation à long terme.The paintings in the Imperial collection in Vienna underwent several phases of restoration treatments. In most cases they can be linked to events in the history of the picture gallery. In the years around 1800 the treatments seemed to be caused mainly by aesthetical aspects: many changes to the format of the paintings can be traced to that time. However, the treatments after the era of the Napoleonic wars were different: Most of the gallery’s panel paintings were cradled at that time. Since this method was applied systematically, it was probably considered as solution for a long lasting conservation.

  19. An optical wall shear stress sensor based on whispering gallery modes of dielectric microspheres

    Science.gov (United States)

    Ayaz, Ulas Kemal

    In recent years, whispering gallery modes (WGM) of dielectric resonators have received significant attention. Based on this phenomenon, many applications have been proposed ranging from spectroscopy [1], micro-cavity laser technology [2] and optical communications (switching [3], filtering [4] and wavelength division and multiplexing [5]). WGM phenomenon have also been exploited in several sensor concepts such as protein adsorption [6,7], trace gas detection [8], impurity detection in liquids [9], structural health monitoring of composite materials [10], detection of electric fields [11], magnetic fields [12, 13] and temperature [14, 15] as well as mechanical sensing, such as pressure [16] and force [17,18]. A remarkable feature of the WGMs of dielectric microspheres is that they can exhibit extremely high quality factors (Q -factors). In literature, Q-factors as high as ˜10 10 have been reported [19]. In sensor applications, Q-factors determine the resolution of the sensor. Since WGMs of dielectric microspheres exhibit such high Q values, proposed WGM based sensors have extremely good sensing resolutions. In this dissertation, a WGM based wall shear stress sensor that is capable of measuring the shear stress directly is presented. The proposed sensor's feasibility is studied both analytically and experimentally. The experimental study included sensor development, fabrication, calibration, frequency response, dynamic range and proof of concept. The sensor showed that it has potential to measure the shear stress in a wide range of Reynolds numbers. Finally, the sensor is tested in a real flow environment to provide the first direct shear stress measurement in a real flow.

  20. Broadband optical absorbance spectroscopy using a whispering gallery mode microsphere resonator

    Science.gov (United States)

    Westcott, Sarah L.; Zhang, Jiangquan; Shelton, Robert K.; Bruce, Nellie M. K.; Gupta, Sachin; Keen, Steven L.; Tillman, Jeremy W.; Wald, Lara B.; Strecker, Brian N.; Rosenberger, A. T.; Davidson, Roy R.; Chen, Wei; Donovan, Kevin G.; Hryniewicz, John V.

    2008-03-01

    We demonstrate the ability to excite and monitor many whispering gallery modes (WGMs) of a microsphere resonator simultaneously in order to make broadband optical absorbance measurements. The 340μm diameter microsphere is placed in a microfluidic channel. A hemispherical prism is used for coupling the WGMs into and out of the microsphere. The flat surface of the prism seals the microfluidic channel. The slight nonsphericity in the microsphere results in coupling to precessed modes whose emission is spatially separated from the reflected excitation light. The evanescent fields of the light trapped in WGMs interact with the surrounding environment. The change in transmission observed in the precessed modes is used to determine the absorbance of the surrounding environment. In contrast to our broadband optical absorbance measurements, previous WGM sensors have used only a single narrow mode to measure properties such as refractive index. With the microfluidic cell, we have measured the absorbance of solutions of dyes (lissamine green B, sunset yellow, orange G, and methylene blue), aromatic molecules (benzylamine and benzoic acid), and biological molecules (tryptophan, phenylalanine, tyrosine, and o-phospho-L-tyrosine) at visible and ultraviolet wavelengths. The microsphere surface was reacted with organosilane molecules to attach octadecyl groups, amino groups, and fluorogroups to the surface. Both electrostatic and hydrophobic interactions were observed between the analytes and the microsphere surface, as indicated by changes in the measured effective pathlength with different organosilanes. For a given analyte and coated microsphere, the pathlength measurement was repeatable within a few percent. Methylene blue dye had a very strong interaction with the surface and pathlengths of several centimeters were measured. Choosing an appropriate surface coating to interact with a specific analyte should result in the highest sensitivity detection.

  1. A arte que anda

    OpenAIRE

    Moreira, Antônio Sérgio

    2016-01-01

    Odeslocamento de objetos sagrados da cultura africana para o novo mundo serve como início de uma reflexão sobre o mercado de arte africana. O texto faz uma análise da influência desses objetos na arte. E ainda nos questiona sobre a arte produzida por artistas afro-brasileiros (arte afro-brasileira ou negra brasileira? Ou apenas arte brasileira?). Palavras-chave: Cultura africana; Objetos sagrados; Arte afro-brasileira; Mercado de arte.

  2. Age of Barrier Canyon-style rock art constrained by cross-cutting relations and luminescence dating techniques

    Science.gov (United States)

    Pederson, Joel L.; Chapot, Melissa S.; Simms, Steven R.; Sohbati, Reza; Rittenour, Tammy M.; Murray, Andrew S.; Cox, Gary

    2014-09-01

    Rock art compels interest from both researchers and a broader public, inspiring many hypotheses about its cultural origin and meaning, but it is notoriously difficult to date numerically. Barrier Canyon-style (BCS) pictographs of the Colorado Plateau are among the most debated examples; hypotheses about its age span the entire Holocene epoch and previous attempts at direct radiocarbon dating have failed. We provide multiple age constraints through the use of cross-cutting relations and new and broadly applicable approaches in optically stimulated luminescence dating at the Great Gallery panel, the type section of BCS art in Canyonlands National Park, southeastern Utah. Alluvial chronostratigraphy constrains the burial and exhumation of the alcove containing the panel, and limits are also set by our related research dating both a rockfall that removed some figures and the rock's exposure duration before that time. Results provide a maximum possible age, a minimum age, and an exposure time window for the creation of the Great Gallery panel, respectively. The only prior hypothesis not disproven is a late Archaic origin for BCS rock art, although our age result of A.D. ∼1-1100 coincides better with the transition to and rise of the subsequent Fremont culture. This chronology is for the type locality only, and variability in the age of other sites is likely. Nevertheless, results suggest that BCS rock art represents an artistic tradition that spanned cultures and the transition from foraging to farming in the region.

  3. Age of Barrier Canyon-style rock art constrained by cross-cutting relations and luminescence dating techniques.

    Science.gov (United States)

    Pederson, Joel L; Chapot, Melissa S; Simms, Steven R; Sohbati, Reza; Rittenour, Tammy M; Murray, Andrew S; Cox, Gary

    2014-09-09

    Rock art compels interest from both researchers and a broader public, inspiring many hypotheses about its cultural origin and meaning, but it is notoriously difficult to date numerically. Barrier Canyon-style (BCS) pictographs of the Colorado Plateau are among the most debated examples; hypotheses about its age span the entire Holocene epoch and previous attempts at direct radiocarbon dating have failed. We provide multiple age constraints through the use of cross-cutting relations and new and broadly applicable approaches in optically stimulated luminescence dating at the Great Gallery panel, the type section of BCS art in Canyonlands National Park, southeastern Utah. Alluvial chronostratigraphy constrains the burial and exhumation of the alcove containing the panel, and limits are also set by our related research dating both a rockfall that removed some figures and the rock's exposure duration before that time. Results provide a maximum possible age, a minimum age, and an exposure time window for the creation of the Great Gallery panel, respectively. The only prior hypothesis not disproven is a late Archaic origin for BCS rock art, although our age result of A.D. ∼ 1-1100 coincides better with the transition to and rise of the subsequent Fremont culture. This chronology is for the type locality only, and variability in the age of other sites is likely. Nevertheless, results suggest that BCS rock art represents an artistic tradition that spanned cultures and the transition from foraging to farming in the region.

  4. Arquitectura, arte funcional

    OpenAIRE

    Monjo Carrió, Juan

    1985-01-01

    The begining of this work is devoted to the analysis of the concepts of Art, Science and Technique and their historical evolution, distinguishing between "fine arts" and "technique arts". Following, Architect and Architecture terms are defined both conceptual and professionally, analysing as well its historical evolution and pointing out the interdependence between the architectural conception as "fine art" and the constructive technology as "technique art", finally reminding the necessary sc...

  5. Classification of antibiotics by neural network analysis of optical resonance data of whispering gallery modes in dielectric microspheres

    Science.gov (United States)

    Saetchnikov, Vladimir A.; Tcherniavskaia, Elina A.; Schweiger, Gustav; Ostendorf, Andreas

    2012-04-01

    A novel emerging technique for the label-free analysis of nanoparticles and biomolecules in liquid fluids using optical micro cavity resonance of whispering-gallery-type modes is being developed.A scheme based on polymer microspheres fixed by adhesive on the evanescence wave coupling element has been used. We demonstrated that the only spectral shift can't be used for identification of biological agents by developed approach. So neural network classifier for biological agents and micro/nano particles classification has been developed. The developed technique is the following. While tuning the laser wavelength images were recorded as avi-file. All sequences were broken into single frames and the location of the resonance was allocated in each frame. The image was filtered for noise reduction and integrated over two coordinates for evaluation of integrated energy of a measured signal. As input data normalized resonance shift of whispering-gallery modes and the relative efficiency of whispering-gallery modes excitation were used. Other parameters such as polarization of excited light, "center of gravity" of a resonance spectra etc. are also tested as input data for probabilistic neural network. After network designing and training we estimated the accuracy of classification. The classification of antibiotics such as penicillin and cephasolin have been performed with the accuracy of not less 97 %. Developed techniques can be used for lab-on-chip sensor based diagnostic tools as for identification of different biological molecules, e.g. proteins, oligonucleotides, oligosaccharides, lipids, small molecules, viral particles, cells and for dynamics of a delivery of medicines to bodies.

  6. DNA as a Work of Art: Processes of Semiosis between Contemporary Art and Biology

    Science.gov (United States)

    Fulkova, Marie; Tipton, Teresa M.

    2013-01-01

    When "A Genomic Portrait--Sir John Sulston" by Mark Quinn appeared in the London National Portrait Gallery's exhibition in 2001/2, the ensuing public controversy over its portrayal raised a number of questions about the representation of a publicly known figure. Because the portrait was the Gallery's first contemporary commission using…

  7. Retóricas de la pandemia. Derivas y resistencias en torno al arte argentino frente a la crisis del sida

    Directory of Open Access Journals (Sweden)

    Francisco Lemus

    2015-06-01

    Full Text Available This paper investigates the political-discourse relations between Grupo de Acción Gay (1984-1985 and the aesthetic and curatorial model devised by Jorge Gumier Maier in the Gallery of Visual Arts of Centro Cultural Rojas (1989-1997 in order to reflect on gay subjectivity processes generated from the impact of AIDS in Buenos Aires and resistance strategies into the art scene of the nineties. From these ideas, this work analyzes a group of images produced by Marcelo Pombo between 1982 and 1989 that introduce some questions about the troubled socio-sexual identity of homosexuality and the rhetoric of elimination on the AIDS pandemic.

  8. Whispering gallery mode bio-sensor for label-free detection of single molecules: thermo-optic vs. reactive mechanism.

    Science.gov (United States)

    Arnold, S; Shopova, S I; Holler, S

    2010-01-04

    Thermo-optic and reactive mechanisms for label-free sensing of bio-particles are compared theoretically for Whispering Gallery Mode (WGM) resonators (sphere, toroid) formed from silica and stimulated into a first order equatorial mode. Although it has been expected that a thermo-optic mechanism should "greatly enhance" wavelength shift signals [A.M. Armani et al, Science 317, 783-787 (2007)] accompanying protein binding on a silica WGM cavity having high Q (10(8)), for a combination of wavelength (680 nm), drive power (1 mW), and cavity size (43 microm radius), our calculations find no such enhancement. The possible reasons for this disparity are discussed.

  9. Use of beach galleries as an intake for future seawater desalination facilities in Florida and globally similar areas

    KAUST Repository

    Missimer, Thomas M.

    2013-06-17

    Desalination of seawater using the reverse osmosis process can be made less costly by the use of subsurface intake systems. Use of conventional open-ocean intakes requires the addition of a number of pretreatment processes to protect the primary RO process. Despite using the best designs possible for the pretreatment, seawater RO membranes tend to biofoul because of the naturally-occurring organic material and small bacteria present in seawater. These materials are not completely removed by the pretreatment system and they pass through the cartridge filters into the membranes, thereby causing frequent and expensive cleaning of the membranes. Quality of the raw water can be greatly improved by the use of subsurface intakes which can substantially reduce the overall treatment cost. There are a number of possible subsurface designs that can be used including conventional vertical wells, horizontal wells, collector wells, beach galleries, and seabed filters. The key selection criteria for the type of subsurface intake most suited and most cost-effective for a site are based on the required volume of raw water and the local geology. The active shorelines of Florida are very well-suited for the development of beach gallery intake systems. These systems are installed beneath the active beach between the high and low tide zones of the beach. Since they are constructed with a depth to the screens between 3 and 5 m, they cannot be observed at surface and persons using the beach would be unaware of their existence. These galleries are simple to construct and they tend not to clog because the active wave action within the intertidal zone provides mechanical energy that continuously cleans the filter face. They also have other advantages, including: the water quality is seawater unaffected by substances present in freshwater aquifers occurring landward of the shoreline, the salinity of the water is generally constant, and there are no impacts on water users located inland from

  10. THz Pyro-Optical Detector Based on LiNbO3 Whispering Gallery Mode Microdisc Resonator

    Science.gov (United States)

    Cosci, Alessandro; Cerminara, Matteo; Nunzi Conti, Gualtiero; Soria, Silvia; Righini, Giancarlo C.; Pelli, Stefano

    2017-01-01

    This study analyzes the capabilities of a LiNbO3 whispering gallery mode microdisc resonator as a potential bolometer detector in the THz range. The resonator is theoretically characterized in the stationary regime by its thermo-optic and thermal coefficients. Considering a Q-factor of 107, a minimum detectable power of 20 μW was evaluated, three orders of magnitude above its noise equivalent power. This value opens up the feasibility of exploiting LiNbO3 disc resonators as sensitive room-temperature detectors in the THz range. PMID:28134857

  11. Eco-aesthetic dimensions: Herbert Marcuse, ecology and art

    Directory of Open Access Journals (Sweden)

    Malcolm Miles

    2016-12-01

    Full Text Available In his last book, The Aesthetic Dimension (1978, Marcuse argued that a concern for aesthetics is justified when political change is unlikely. But the relation between aesthetics and politics is oblique: “Art cannot change the world, but it can contribute to changing the consciousness … of the men and women who could change the world.” (p. 33. Marcuse also linked his critique of capitalism to environmentalism in the early 1970s: “the violation of the Earth is a vital aspect of the counterrevolution.” (Ecology and Revolution, in The New Left and the 1960s, Collected Papers 3, 2005, p. 173. This article revisits Marcuse’s ideas on aesthetics and ecology, and reviews two recent art projects which engage their audiences in ecological issues: The Jetty Project (2014 by Wolfgang Weileder—which used recycled material and community participation to construct a temporary monument within a wider conservation project on the Tyne, N-E England—and Fracking Futures by HeHe (Helen Evans and Heiko Hansen—which turned the interior of the gallery at FACT, Liverpool, into what appeared to be a fracking site. The aim is not to evaluate the projects, nor to test the efficacy of Marcuse’s ideas, more to ask again whether art has a role in a shift of attitude which might contribute to dealing with the political and economic causes of climate change.

  12. Inspired Spirals. Teaching Art with Art.

    Science.gov (United States)

    Hubbard, Guy

    2001-01-01

    Discusses spirals in nature, man-made objects, and art. Focuses on art that incorporates the spiral, including works by M. C. Escher and Frank Lloyd Wright, an African headdress, and a burial urn. Describes activities to help students make spirals of their own, such as constructing a coil clay pot. (CMK)

  13. Digitization of Cultural Heritage and Business Model Innovation: The Case of the Uffizi Gallery in Florence

    Directory of Open Access Journals (Sweden)

    Luciana Lazzeretti

    2016-12-01

    Full Text Available Recently, digitization has attracted increasing interest not only in museology and computer science, but also in economics and managerial literature. Scholars have tried to analyse how technological innovation is reshaping the role and mission of museums as producers and distributors of cultural content and investigate the new business model that emerges. The present work aims to investigate the adoption of ICT and innovation processes in museums, and their interaction dynamics between curators and technology developers. We analyse an Italian successful museum case study, the Uffizi Gallery in Florence, where digitization has been developed through a long-term partnership among the local University, a creative ICT enterprise and other technical partners. Data collection integrates some semi-structured interviews with information from websites, documents, publications, and the museum’s institutional communication. The main results show that this case can be defined as a Virtual Value Chain Model according to a curatorial approach at European level. Reecentemente, la digitalizzazione ha attratto un interesse crescente non solo nelle discipline museologiche e informatiche, ma anche nella letteratura economica e manageriale. Gli studiosi hanno provato ad analizzare quanto  l’innovazione tecnologica stia ridisegnando il ruolo e la mission dei musei come produttori e distributori di contenuti culturali, analizzando nel contempo  i nuovi modelli imprenditoriali che emergono. Questo contributo intende investigare l’adozione delle tecnologie dell’informazione e di nuovi processi nei musei, e le dinamiche di interazione tra curatori e sviluppatori di tecnologie. Si analizza un caso di successo italiano, la galleria degli Uffizi di Firenze, dove la digitalizzazione è stata sviluppata nell’ambito di una lunga collaborazione con la locale Università, un’impresa creativa e altri partner tecnici. La raccolta di dati integra le interviste semi

  14. Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors

    Science.gov (United States)

    Ioppolo, Tindaro; Ötügen, Volkan; Ayaz, Ulas

    2013-01-01

    Optical modes of dielectric micro-cavities have received significant attention in recent years for their potential in a broad range of applications. The optical modes are frequently referred to as "whispering gallery modes" (WGM) or "morphology dependent resonances" (MDR) and exhibit high optical quality factors. Some proposed applications of micro-cavity optical resonators are in spectroscopy1, micro-cavity laser technology2, optical communications3-6 as well as sensor technology. The WGM-based sensor applications include those in biology7, trace gas detection8, and impurity detection in liquids9. Mechanical sensors based on microsphere resonators have also been proposed, including those for force10,11, pressure12, acceleration13 and wall shear stress14. In the present, we demonstrate a WGM-based electric field sensor, which builds on our previous studies15,16. A candidate application of this sensor is in the detection of neuronal action potential. The electric field sensor is based on polymeric multi-layered dielectric microspheres. The external electric field induces surface and body forces on the spheres (electrostriction effect) leading to elastic deformation. This change in the morphology of the spheres, leads to shifts in the WGM. The electric field-induced WGM shifts are interrogated by exciting the optical modes of the spheres by laser light. Light from a distributed feedback (DFB) laser (nominal wavelength of ~ 1.3 μm) is side-coupled into the microspheres using a tapered section of a single mode optical fiber. The base material of the spheres is polydimethylsiloxane (PDMS). Three microsphere geometries are used: (1) PDMS sphere with a 60:1 volumetric ratio of base-to-curing agent mixture, (2) multi layer sphere with 60:1 PDMS core, in order to increase the dielectric constant of the sphere, a middle layer of 60:1 PDMS that is mixed with varying amounts (2% to 10% by volume) of barium titanate and an outer layer of 60:1 PDMS and (3) solid silica sphere

  15. Creating Art Appreciation Activities.

    Science.gov (United States)

    Heidt, Ann H.

    1986-01-01

    The experiences of college students enrolled as majors in elementary education in designing art appreciation activities for use in elementary classrooms are described. The college students had no art background. (RM)

  16. Nordic (Art) Photography

    DEFF Research Database (Denmark)

    Sandbye, Mette

    2013-01-01

    A description of the rise of the role of photography on the Scandinavian art scene the last 25 years......A description of the rise of the role of photography on the Scandinavian art scene the last 25 years...

  17. Fine Arts Database (FAD)

    Data.gov (United States)

    General Services Administration — The Fine Arts Database records information on federally owned art in the control of the GSA; this includes the location, current condition and information on artists.

  18. Art Taipei, 2007

    Institute of Scientific and Technical Information of China (English)

    Jade; Franklin

    2007-01-01

    ■The boom of Chinese contemporary art in recent years has been greatly assisted by the purchasing power of Taiwanese collectors. They constitute the largest art buyers in the Asian market and without them the scene would look

  19. MUF architecture /art London

    DEFF Research Database (Denmark)

    Svenningsen Kajita, Heidi

    2009-01-01

    Om MUF architecture samt interview med Liza Fior og Katherine Clarke, partnere i muf architecture/art......Om MUF architecture samt interview med Liza Fior og Katherine Clarke, partnere i muf architecture/art...

  20. "small problems, Big Trouble": An Art and Science Collaborative Exhibition Reflecting Seemingly small problems Leading to Big Threats

    Science.gov (United States)

    Waller, J. L.; Brey, J. A.

    2014-12-01

    "small problems, Big Trouble" (spBT) is an exhibition of artist Judith Waller's paintings accompanied by text panels written by Earth scientist Dr. James A. Brey and several science researchers and educators. The text panels' message is as much the focus of the show as the art--true interdisciplinarity! Waller and Brey's history of art and earth science collaborations include the successful exhibition "Layers: Places in Peril". New in spBT is extended collaboration with other scientists in order to create awareness of geoscience and other subjects (i.e. soil, parasites, dust, pollutants, invasive species, carbon, ground water contaminants, solar wind) small in scale which pose significant threats. The paintings are the size of a mirror, a symbol suggesting the problems depicted are those we increasingly need to face, noting our collective reflections of shared current and future reality. Naturalistic rendering and abstract form in the art helps reach a broad audience including those familiar with art and those familiar with science. The goal is that gallery visitors gain greater appreciation and understanding of both—and of the sober content of the show as a whole. "small problems, Big Trouble" premiers in Wisconsin April, 2015. As in previous collaborations, Waller and Brey actively utilize art and science (specifically geoscience) as an educational vehicle for active student learning. Planned are interdisciplinary university and area high school activities linked through spBT. The exhibition in a public gallery offers a means to enhance community awareness of and action on scientific issues through art's power to engage people on an emotional level. This AGU presentation includes a description of past Waller and Brey activities: incorporating art and earth science in lab and studio classrooms, producing gallery and museum exhibitions and delivering workshops and other presentations. They also describe how walking the paths of several past earth science

  1. Whispering gallery states of neutrons and anti-hydrogen atoms and their applications to fundamental and surface physics

    Science.gov (United States)

    Nesvizhevsky, Valery

    2013-03-01

    The `whispering gallery' effect has been known since ancient times for sound waves in air, later in water and more recently for a broad range of electromagnetic waves: radio, optics, Roentgen and so on. It is intensively used and explored due to its numerous crucial applications. It consists of wave localization near a curved reflecting surface and is expected for waves of various natures, for instance, for neutrons and (anti)atoms. For (anti)matter waves, it includes a new feature: a massive particle is settled in quantum states, with parameters depending on its mass. In this talk, we present the first observation of the quantum whispering-gallery effect for matter particles (cold neutrons) 1-2. This phenomenon provides an example of an exactly solvable problem analogous to the `quantum bouncer'; it is complementary to recently discovered gravitational quantum states of neutrons3. These two phenomena provide a direct demonstration of the weak equivalence principle for a massive particle in a quantum state. Deeply bound long-living states are weakly sensitive to surface potential; highly excited short-living states are very sensitive to the wall nuclear potential shape. Therefore, they are a promising tool for studying fundamental neutron-matter interactions, quantum neutron optics and surface physics effects. Analogous phenomena could be measured with atoms and anti-atoms 4-5.

  2. Controllable Optical Switch in a One-Dimensional Resonator Waveguide Coupled to a Whispering-Gallery Resonator

    Institute of Scientific and Technical Information of China (English)

    LANG Jia-Hong

    2011-01-01

    Single photon transport properties in a one-dimensional array of coupled microcavities waveguide coupled to a whispering-gallery resonator interacting with a A-type system are theoretically investigated.The calculations reveal that the transport properties of single photons with arbitrary energy can be controlled by varying the Rabi frequency and detuning the control optical field.This phenomenon can be used for controllable optical switching.Single photon transport properties in a onedimensional waveguide coupled to a two-level[1-10] or multi-level[11-17] system have been studied theoretically and experimentally for their potential applications in quantum information and all-optical devices.A coupled cavity array is considered as a one-dimensional waveguide and the single photon transport properties in such a system coupled to a two-level and multi-level system have been studied.%Single photon transport properties in a one-dimensional array of coupled microcavities waveguide coupled to a whispering-gallery resonator interacting with a A-type system are theoretically investigated. The calculations reveal that the transport properties of single photons with arbitrary energy can be controlled by varying the Rabi frequency and detuning the control optical field. This phenomenon can be used for controllable optical switching.

  3. Natural air ventilation in underground galleries as a tool to increase radon sampling volumes for geologic monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Eff-Darwich, Antonio [Departamento de Edafologia y Geologia, Universidad de La Laguna, Av. Astrofisico Francisco, Sanchez s/n, 38206 La Laguna, Tenerife (Spain); Instituto de Astrofisica de Canarias, c/Via Lactea s/n, 38205 La Laguna, Tenerife (Spain)], E-mail: adarwich@ull.es; Vinas, Ronaldo [Departamento de Edafologia y Geologia, Universidad de La Laguna, Av. Astrofisico Francisco, Sanchez s/n, 38206 La Laguna, Tenerife (Spain); Soler, Vicente [Estacion Volcanologica de Canarias, IPNA-CSIC, Av. Astrofisico Francisco Sanchez s/n, 38206 La Laguna, Tenerife (Spain); Nuez, Julio de la; Quesada, Maria L. [Departamento de Edafologia y Geologia, Universidad de La Laguna, Av. Astrofisico Francisco, Sanchez s/n, 38206 La Laguna, Tenerife (Spain)

    2008-09-15

    A simple numerical model was implemented to infer airflow (natural ventilation) in underground tunnels from the differences in the temporal patterns of radon, {sup 222}Rn, concentration time-series that were measured at two distant points in the interior of the tunnels. The main purpose of this work was to demonstrate that the installation of radon monitoring stations closer to the entrance of the tunnels was sufficient to remotely analyse the distribution of radon concentration in their interiors. This could ease the monitoring of radon, since the effective sampling volume of a single monitoring station located closer to the entrance of a tunnel is approximately 30,000 times larger than the sampling volume of a sub-soil radon sensor. This methodology was applied to an underground gallery located in the volcanic island of Tenerife, Canary Islands. This island constitutes an ideal laboratory to study the geo-dynamical behaviour of radon because of the existence of a vast network of galleries that conforms the main water supply of the island.

  4. Discover Shoowa Design: Gallery Activities for Children and Adults, Ages 8 to Adult.

    Science.gov (United States)

    Blechman, Margaret

    This booklet contains examples of textile designs created by the Shoowa, a subgroup of the Kuba people of Zaire, Africa; the examples were part of the National Museum of African Art exhibition, "Shoowa Design: Raffia Textiles from Zaire." Additional information is provided about the Shoowa people and how Shoowa textiles are used, made, colored,…

  5. Night Gallery: An Innovative Multimedia Strategy for Delivering a General Microbiology Lecture

    Science.gov (United States)

    Dahl, John; Mixter, Phil

    2008-01-01

    In delivering a core science course to pre-health-related majors, the authors sought ways to engage students, make material relevant to life-long learning, and present it in a memorable way. Their goals were to present scientific content fused with history, ethics, public policy, and art in such a way that the students would be provided a unique…

  6. Development of the concept of the festival of street arts as an instrument to enhance the attractiveness of the modern city

    Directory of Open Access Journals (Sweden)

    Dubinkina Ekaterina

    2016-06-01

    Full Text Available The article is devoted to the organisation and holding of festivals. Festival projects today are a way of formation and promotion of brands, attracting tourists, advertising goods and services, forming the image of the region, the city, transformation of the urban environment, drawing attention to various problems. The purpose of this research is to describe the features of the development and holding of the festival of street arts as an instrument to enhance the attractiveness of the modern city. The object of this research is the concept of the festival of street arts on the basis of the gallery "Sweater", which can be used as a practical guide to the implementation of the project, as well as the methodical basis for the development of social and cultural projects, such as festivals. The article reveals the concept of street art not only as a form of painting – graffiti, but the art, born in the streets, and comprising street musicians, singers, actors, photographers and dancers. The concept of the festival, its functions and types have been disclosed, the possibility of the organisation of the festival on the basis of the gallery "Sweater" and organisational content for it have been also analysed. There has been created the concept of the event. All the stages of its organisation and implementation have been examined. Expected results of the "festival of street arts" have been determined, and the prospects for its further development have been outlined.

  7. Arte, derecho y derecho al arte

    Directory of Open Access Journals (Sweden)

    Rubén Martínez Dalmau

    2014-07-01

    Full Text Available El artículo defiende que existe un derecho subjetivo al arte fundamentado en la autonomía del arte, que lo diferencia de otras formas expresivas; en la capacidad de apropiación subjetiva del arte exclusivamente por parte de los seres humanos; en las posibilidades del arte para la construcción de formas de expresión varias; y en el potencial uso del arte en políticas públicas propias de los sistemas democráticos, que ayudaría al derecho a la paz y a la reconciliación, así como formas alternativas de reparación y rehabilitación en sociedad. La exclusividad de la relación del hombre con el arte fundamentaría su objetivación y, por ello, lo convertiría en un derecho jurídicamente exigible.

  8. Gombrich, Art and Psychoanalysis

    OpenAIRE

    Stefano Ferrari

    2014-01-01

    Ernst H. Gombrich has always shown particular attention to the psychology of art as psychology of representation (and enjoyment) of art. In addition, through his friendship with Ernst Kris, who had been a respected art historian in the staff of the Kunsthisthoriches Museum in Vienna before becoming an important psychoanalyst, Gombrich devoted some fundamental essays on the contribution of psychoanalysis to the study of art.The main novelty and the most original feature of his contribution to ...

  9. Technical feasibility of a seabed gallery system for SWRO facilities at Shoaiba, Saudi Arabia, and regions with similar geology

    KAUST Repository

    Rodri­guez, Luis R. Lujan

    2013-09-02

    Subsurface intakes can be used as part of the pretreatment system for seawater reverse osmosis facilities. Wells of various designs and galleries are being used for intakes at many sites globally to reduce pretreatment costs, chemical usage, biofouling potential, and environmental impacts (entrainment and impingement). The goal of using a subsurface intake is to reduce or replace conventional pretreatment processes. A field and laboratory investigation was undertaken to assess the feasibility of developing a seabed gallery intake offshore near the Shoaiba seawater RO (SWRO) plant site (150,000 m3/d treatment capacity) that could be used to replace the current intake used for only the RO capacity. A survey of the beach and offshore area was made and 51 sediment samples were collected from the seabed for laboratory analysis of grain size distribution, porosity, and hydraulic conductivity. Field observations showed that the marine bottom has a low slope from the shoreline seaward a distance of about 100 m to a depth of about 1.0 m before it steepens to a depth of over 2 m at 150 m from shore. The site has a relativity thin cover of unlithified carbonate sands, 2-5 cm thick, sitting on a soft coralline limestone of Pleistocene age. The sediments investigated were found to be clean carbonate or slightly muddy carbonate sands with mean grain diameters ranging mostly between 0.25 and 0.5 mm. Most of the area investigated contained a mud percentage between 0 and 5%. The measured porosity values range between 0.33 and 0.45 and measured hydraulic conductivity values from about 1.6 to 79.5 m/d with 64.6 m/d being the maximum offshore value. A preliminary design was developed to meet the full operational capacity of the Shoaiba SWRO treatment plant which would require 375,000 m3/d of raw water to produce 150,000 m3/d of permeate (40% conversion assumed for Red Sea water with a TDS of 41,000 mg/L). The design of the RO plant uses 10 trains to produce the 150,000 m3/d of product

  10. Danto and Art Criticism

    Directory of Open Access Journals (Sweden)

    Cynthia Freeland

    2008-01-01

    Full Text Available In this article I examine the relationship between Arthur Danto's philosophy of art and his practice of art criticism. Danto has said that he included many actual examples of discussions of art in The Transfiguration of the Commonplace because of the feeling that, previously, philosophers had theorized about art in a vacuum. And since the time of publishing that book, he has written on a wide variety of both historical and contemporary artists and art practices. Danto's philosophy of art commits him to an account of the practice of art criticism as interpretation. However, I question whether the Danto-esque interpretive essay can serve as an adequate model for art criticism. My primary claim is that art criticism must include a more strongly evaluative element than Danto's theory leaves room for, since on his view, the critic primarily explains meaning by examining how it is embodied in a work. This leaves open the question of which meanings count as valuable or important. In his more recent work Danto has explored a "Hegelian" view that art is primarily about art, but this view too does not allow for art to be evaluated or "criticized" on the basis of whether or how well it tackles the more profound questions of meaning.

  11. Arts and Technology

    DEFF Research Database (Denmark)

    This book constitutes the thoroughly refereed post-conference proceedings of the Second International Conference on Arts and Technology, ArtsIT 2011, which was held in December 2011 in Esbjerg, Denmark. The 19 revised full papers and the two poster papers cover various topics such as Interaction...... and Art, Music and Performance, and Digital Technology....

  12. Ancient Art Form Revisited

    Institute of Scientific and Technical Information of China (English)

    Liu Jian

    2011-01-01

    @@ A CHINESE New Year painting exhibition has offered thousands of art lovers a traditional folk art feast in Beijing this past January and February.With the theme of "Door Gods," over 300 works of art were on display, representing various styles in China's different regions.

  13. "I like Art Because..."

    Science.gov (United States)

    Leishear, Christina Chiddo

    2012-01-01

    There is a lot of creative energy between students and their art materials. In this lesson, the author discusses materials an artist may use to create a work of art--paint, a paintbrush, a palette, crayons, markers, pastels, and so on. Each student sketched a picture of themselves holding some tools that can be used in art. The objectives of this…

  14. Arts Opportunity Gap

    Science.gov (United States)

    Principal, 2012

    2012-01-01

    The increasing focus on arts education during the past few years has brought much-needed attention to the benefits it affords to students of all ages. Past research has proved time and again that the arts support teaching and learning in numerous ways, and recommendations abound that schools should find ways to integrate the arts in classrooms.…

  15. Catalyst--The Arts.

    Science.gov (United States)

    Feldman, Edmund Burke

    1978-01-01

    Throughout European history, artists have celebrated the values of their patrons. Today, the schools are the largest employer of artists. To justify art education according to current Back-to-Basics values, art teachers should explain visual art as a language, which they can teach students to read and use. (SJL)

  16. Arts and Education.

    Science.gov (United States)

    Berube, Maurice R.

    1999-01-01

    Describes the American public's growing interest in art after World War II. Discusses the problematic history of arts in the public school curricula, in which arts programs are seen as a last priority in school reform and are the first to be eliminated in school districts facing financial retrenchment. (SR)

  17. The Art of Running

    Science.gov (United States)

    Brown, Jill Harris

    2007-01-01

    Every year, the Parent-Teacher Association of Ferndale Elementary School in Atlanta, Georgia sponsors a fun road race for the students, teachers, families, and community. This annual event has inspired the author to develop the Running and Art project to show off her students' art and squeeze in a little art history, too. In this article, the…

  18. In/Visible Art

    Directory of Open Access Journals (Sweden)

    Marina Tkacheva

    2015-07-01

    Full Text Available The article analyses different forms of easel painting, monumental and decorative art and photography existing in modern universities. It observes how the function of art changes in the context of modernization of culture and higher education. The role of initiators of art spaces in universities is also featured. 

  19. The Arts Advantage.

    Science.gov (United States)

    Deasy, Richard J.; Fulbright, Harriet Mayor

    1999-01-01

    Findings from a 2-year study of arts education reveal that the first and most important factor in a school district's ability to provide strong arts education is the community's support and involvement. Districts with strong arts education also require a supportive school board, superintendent, and a cadre of principals, teachers, and parents.…

  20. From soil in art towards Soil Art

    Science.gov (United States)

    Feller, C.; Landa, E. R.; Toland, A.; Wessolek, G.

    2015-02-01

    The range of art forms and genres dealing with soil is wide and diverse, spanning many centuries and artistic traditions, from prehistoric painting and ceramics to early Renaissance works in Western literature, poetry, paintings, and sculpture, to recent developments in cinema, architecture and contemporary art. Case studies focused on painting, installation, and cinema are presented with the view of encouraging further exploration of art about, in, with, or featuring soil or soil conservation issues, created by artists, and occasionally scientists, educators or collaborative efforts thereof.

  1. Arte corporal (Body Art y videoperformance

    Directory of Open Access Journals (Sweden)

    Celia Balbina Fernández Consuegra

    2015-01-01

    Full Text Available Tomando en consideración que el Body Art es el lenguaje expresivo del género Performance Art, se plantea como objetivo de este trabajo, una reflexión sobre aquellas acciones artísticas que dieron origen a lo que hoy conocemos como videoperformance. En un principio, con el objeto de documentar las acciones, se comenzaron realizar grabaciones videográficas. Después, los artistas empezaron a incorporar determinadas imágenes a sus acciones, lo que planteó la posibilidad de realizar obras con el único objetivo de ser registradas; esto dio origen al videoperformance.

  2. Art Priori = Art Priori / Kristel Jakobson

    Index Scriptorium Estoniae

    Jakobson, Kristel, 1983-

    2015-01-01

    Restoran Art Priori Tallinna vanalinnas Olevimägi 7. Sisekujunduse autor Kristel Jakobson (Haka Disain). Eesti Sisearhitektide Liidu aastapreemia 2014/2015 parima restorani eest. Lühidalt Kristel Jakobsonist

  3. Art Therapy: What Is Art Therapy?

    Science.gov (United States)

    ... skills, improve reality orientation, reduce anxiety, and increase self-esteem. A goal in art therapy is to improve ... supports federal and state policies, legislation, regulations, judicial actions, and initiatives that encourage, promote, and support efforts ...

  4. What is Pop Art?

    OpenAIRE

    2013-01-01

    In this project we have theoretically investigated the concept of art and how it is perceived. We have tried to prove the claim that art reflects the changes and dynamics that pervade in a society. We have accomplished this by taking a closer look at two art streams, Abstract Expressionism and Pop Art, with our focus mainly on the latter. The concluding comparative analysis was carried out by juxtaposing the works of the two main representatives of their respective art streams, the Pop Artist...

  5. Critical Zen art history

    Directory of Open Access Journals (Sweden)

    Gregory P. A. Levin

    2016-12-01

    Full Text Available This essay sketches a history of the study of Zen art from the late nineteenth century to post-war reconsiderations, leading towards what I term “critical Zen art studies.” The latter, I suggest, has been undertaken by historians of art and others to challenge normative definitions of Zen art based on modern constructs, revise understanding of the types and functions of visual art important to Chan/Sŏn/Zen Buddhist monasteries, and study iconographies and forms not as a transparent aesthetic indices to Zen Mind or No Mind but as rhetorically, ritually, and socially complex, even unruly, events of representation.

  6. Ancient Art Form Revisited

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Chinese New Year painting exhibition reveals the beauty of folk art A CHINESE New Year painting exhibition has offered thousands of art lovers a traditional folk art feast in Beijing this past January and February.With the theme of "Door Gods," over 300 works of art were on display,representing various styles in China’s different regions. Woodcut prints,each a piece of special handmade folk art featuring auspicious subjects,are characterized by their concise lines, bright colors,and joyful scenes embodying people’s best wishes for the New Year.

  7. Lo Studio d’Arte Palma: Storia di un’impresa per il commercio artistico nell’Italia del dopoguerra

    Directory of Open Access Journals (Sweden)

    Viviana Pozzoli

    2016-12-01

    Full Text Available Inaugurato a Roma nel maggio 1944, a poche settimane dalla Liberazione, lo Studio d’Arte Palma ha costituito un inedito esperimento di organizzazione artistica capace di coniugare attività espositive, mercantili e di centro di restauro, nell’ottica congiunta di un’esigenza di valorizzazione del patrimonio e delle produzioni d’arte italiane e della proposta di un nuovo gusto, espressione dei valori del mondo contemporaneo. Questo contributo intende, per la prima volta, tracciarne il profilo, mettendo in luce la specificità dell’iniziativa nel coevo panorama delle gallerie d’arte. A partire dall’analisi delle fonti d’archivio, si precisano la storia, la progettualità e la programmazione della “Palma”, a cui collaborarono, raccolte attorno alla figura del suo fondatore, Pietro Maria Bardi, alcune tra le personalità di maggiore rilievo del sistema delle arti del tempo.

  8. The art of scent

    DEFF Research Database (Denmark)

    Stenslund, Anette

    2017-01-01

    At the Museum of Art and Design in New York the The Art of Scent (1889–2012) exhibition announced its declared aim of bringing to the forefront of the arts what has long been considered the fallen angel of the senses: it would inscribe scent into fine art through a display characterised by its ex...... situ superiority detached from everyday culture in situ. The exhibition would thus give cause to sketch in a phenomenology of the art of scent that opts for greater inclusion of visitors’ experienced noses. Unfolding within the framework of Martin Heidegger’s critique of aesthetics and the advocacy...... of art, this paper argues that scent that is not of high culture may yet, phenomenologically speaking, be considered great art....

  9. The Origins of Art

    Directory of Open Access Journals (Sweden)

    Aleksandre P. Lobodanov

    2015-12-01

    Full Text Available The origins of artistic activities or rather art, and in recent decades the processing and consolidation of a new field in art history, art semiotics, are grouped together in the semiotic systems of applied and non-applied arts.In this paper, in particular, an analysis is made of the non-applied arts, in which non-verbal signs are used to express the form of human thought.The discussion focuses on the origins of non-applied arts, the image-forming process, the psychology of perception, the perception of sound and reproduction of sounds, the development of music and the development of dance in their entirety, as an expression of the inner condition that influences the body through movement: it thus provides a valuable contribution to the study of the non-applied arts.

  10. A gallery of oil components, their metals and Re-Os signatures

    Science.gov (United States)

    Stein, Holly J.; Hannah, Judith L.

    2016-04-01

    Most sediment-hosted metallic ore deposits are one degree of freedom from hydrocarbon. That is, sulfide fluid inclusions may contain vestiges of travel in tandem with hydrocarbon-bearing fluids. For metallic ore deposits of stated metamorphic and magmatic origin, the degrees of freedom are several times more or, in some cases, no relationship exists. Still, the fetish for stereotyping and classifying ore types into hardline ore deposit models (or hybrid models when the data are wildly uncooperative) impedes our ability to move toward a better understanding of source rock. Fluids in the deeper earth, fluids in the crust, and the extraterrestrial rain of metals provide the Re-Os template for oil. So, too, this combination ultimately drives the composition of many metallic ore deposits. The world of crude oil and its complex history of maturation, migration, mixing, metal-rich asphaltene precipitation, and subsequent mobility of lighter and metal-poor components, is an untapped resource for students of ore geology. In the same way that Mississippi Valley-type lead and zinc deposits are described as the outcome of two converging and mixing fluids (metal-bearing and sulfur-bearing fluids), asphaltene precipitation can be an outcome of a lighter oil meeting and mixing with a heavier one. In the petroleum industry, this can spell economic disaster if the pore-space becomes clogged with a non-producible heavy oil or solid bitumen. In ore geology, sulfide precipitation on loss of permeability may create a Pb-Zn deposit. Petroleum systems provide a gallery of successive time-integrated Re-Os results. Heavy or biodegraded oils, if intersected by lighter oil or gas, can generate asphaltite or tar mats, and release a reservoir of still lighter oil (or gas). During this process there are opportunities for separation of metal-enriched aqueous fluids that may retain an imprint of their earlier hydrocarbon history, ultimately trapped in fluid inclusions. Salinity, temperature and p

  11. Passion Trumps Pay: A Study of the Future Skills Requirements of Information Professionals in Galleries, Libraries, Archives and Museums in Australia

    Science.gov (United States)

    Howard, Katherine; Partridge, Helen; Hughes, Hilary; Oliver, Gillian

    2016-01-01

    Introduction: This paper explores the current and future skills and knowledge requirements of contemporary information professionals in a converged gallery, library, archive and museum sector (also referred to as the GLAM sector) in Australia. This research forms part of a larger study that investigated the education needs of information…

  12. An application of SPIV technique to experimental validation of the turbulence model for the air flow in the intersection of the mining face with the ventilation gallery

    Energy Technology Data Exchange (ETDEWEB)

    Jaszczur, Marek; Nowak, Remigiusz; Szmyd, Janusz [Faculty of Energy and Fuels, AGH University of Science and Technology (Poland); Branny, Marian; Karch, Michal; Wodziak, Waldemar, E-mail: marek.jaszczur@agh.edu.pl [Faculty of Mining and Geoengineering, AGH University of Science and Technology (Poland)

    2011-12-22

    This paper presents a comparison between results obtained using SPIV experimental technique and numerical simulations approach. An analysis has been performed to validate the turbulent models used in mining ventilation systems. The flow of air across the intersection of the mining face with the ventilation gallery has been examined.

  13. El mundo del arte

    Directory of Open Access Journals (Sweden)

    Arthur Danto

    2013-12-01

    Full Text Available [ES] Este famoso ensayo de Arthur Danto, que se presenta aquí traducido al español, fue el primer desarrollo de su concepto de «mundo del arte» como un marco contextual que da sentido, por medio de sus usos teóricos-lingüísticos, a toda forma de arte reconocible en el mundo. Este concepto tendría una influencia enorme en todo el mundo, y fue la base de todo el pensamiento posterior de Danto acerca del arte, y su principal herramienta filosófica para vender en todas partes la idea de que las obras de Andy Warhol no sólo eran legítimas obras de arte, sino incluso, obras importantes de arte. ; [EN] This famous essay by Arthur Danto, presented here entirely translated into Spanish, was the first development of his concept of “art world” as a contextual framework that gives meaning, through its theoretical-linguistic uses, to all forms of recognizable art in the world. This concept would have a huge influence around the world, and was the basis of all subsequent Danto’s thought about art, and his main philosophical tool to sell everywhere the idea that the works of Andy Warhol were not only legitimate works of art, but even important works of art.

  14. Medical Art Therapy

    Directory of Open Access Journals (Sweden)

    Birgul Aydin

    2012-03-01

    Full Text Available Art therapy is a form of expressive therapy that uses art materials. Art therapy combines traditional psychotherapeutic theories and techniques with an understanding of the psychological aspects of the creative process, especially the affective properties of the different art materials. Medical art therapy has been defined as the clinical application of art expression and imagery with individuals who are physically ill, experiencing physical trauma or undergoing invasive or aggressive medical procedures such as surgery or chemotherapy and is considered as a form of complementary or integrative medicine. Several studies have shown that patients with physical illness benefit from medical art therapy in different aspects. Unlike other therapies, art therapy can take the patients away from their illness for a while by means of creative activities during sessions, can make them forget the illness or lost abilities. Art therapy leads to re-experiencing normality and personal power even with short creative activity sessions. In this article definition, influence and necessity of medical art therapy are briefly reviewed.

  15. Art Toys in the contemporary art scene

    Directory of Open Access Journals (Sweden)

    Laura Sernissi

    2014-03-01

    Full Text Available The Art Toys phenomenon, better known as Art Toy Movement, was born in China in the mid-nineties and quickly spread out to the rest of the world. The toys are an artistic production of serial sculpture, made by handcrafts or on an industrial scale. There are several types of toys, such as custom toys and canvas toys, synonyms of designer toys, although they are often defined according to the constituent material, such as vinyl toys (plastic and plush toys (fabric. Art toys are the heirs of an already pop-surrealist and neo-pop circuit, which since the eighties of the twentieth century has pervaded the Japanese-American art scene, winking to the playful spirit of the avant-garde of the early century. Some psychoanalytic, pedagogical and anthropological studies about “play theories”, may also help us to understand and identify these heterogeneous products as real works of art and not simply as collectible toys.

  16. Martial Arts Club

    CERN Multimedia

    Martial Arts Club

    2010-01-01

    In July 2010, after five years of activity, the CERN Martial Arts held its first international Bujutsu seminar, gathering more than 40 participants from France, Switzerland, Sweden and Japan. The seminar was led by Master Shimazu Kenji, world-renowned martial arts expert based in Tokyo and headmaster of the Yagyu Shingan Ryu school, present in Europe specifically for the occasion. During nine days, participants got to discover the wide array of Bujutsu techniques and traditions of an ancestral martial art that finds its roots in the art and lives of Japanese samurais. Covering such varied subjects as self-defense techniques (Jujitsu), swordsmanship (Kenjutsu), through to healing techniques and etiquette, it encompasses all aspects of a way of life that still find echoes in today's modern Japanese society. The CERN Martial Arts club wishes to thank particularly the CERN Clubs Committee and its president Rachel Bray for their support in organizing this event. The CERN Martial Arts club, led by Sylvai...

  17. Art, Technology and Nature

    DEFF Research Database (Denmark)

    Since 1900, the connections between art and technology with nature have become increasingly inextricable. Through a selection of innovative readings by international scholars, this book presents the first investigation of the intersections between art, technology and nature in post-medieval times....... Transdisciplinary in approach, this volume’s 14 essays explore art, technology and nature’s shifting constellations that are discernible at the micro level and as part of a larger chronological pattern. Included are subjects ranging from Renaissance wooden dolls, science in the Italian art academies, and artisanal...... Camilla Skovbjerg Paldam and Jacob Wamberg trace the Kantian heritage of radically separating art and technology, and inserting both at a distance to nature, suggesting this was a transient chapter in history. Thus, they argue, the present renegotiation between art, technology and nature is reminiscent...

  18. Pragmatics of Raw Art

    DEFF Research Database (Denmark)

    Wilson, Alexander

    2014-01-01

    In the last several decades, art has seen the dissolution of the old avant-garde critical grid. Gone are the days of absolutes and manifestos. The most varied styles have been absorbed into the postmodern pastiche, outsider artworks have been traded for large sums on the fine-art market......, and a contemporary zeitgeist marked by a general relativisation of aesthetic values has emerged, exploding into a plethora of parallel discourses on art. Perhaps there is no longer such a thing (if there ever was) as Culture with a capital C, which Dubuffet so vehemently opposed in his championing of art brut....... The concepts of raw art and outsider art were typical of a time when oppositional politics still infused artistic and academic discourses. But modernity seems to have ‘grown out’ of its adolescence, so to speak: out of politics of opposition and absolutes. Of course, it is neither desirable nor possible...

  19. Thermo-Optical Tuning of Whispering Gallery Modes in Er:Yb Doped Glass Microspheres to Arbitrary Probe Wavelengths

    CERN Document Server

    Watkins, Amy; Chormaic, Síle Nic

    2012-01-01

    We present experimental results on an all-optical, thermally-assisted technique for broad range tuning of microsphere cavity resonance modes to arbitrary probe wavelengths. An Er:Yb co-doped phosphate glass (Schott IOG-2) microsphere is pumped at 978 nm via the supporting stem and the heat generated by absorption of the pump light expands the cavity and changes the refractive index. This is a robust tuning method that decouples the pump from the probe and allows fine tuning of the microsphere's whispering gallery modes. Pump/probe experiments were performed to demonstrate thermo-optical tuning to specific probe wavelengths, including the 5S1/2 F = 3 to 5P3/2 F' = 4 laser cooling transition of 85Rb. This is of particular interest for cavity QED-type experiments, while the broad tuning range achievable is useful for integrated photonic devices, including sensors and modulators.

  20. Coupling of a single diamond nanocrystal to a whispering-gallery microcavity: Photon transport benefitting from Rayleigh scattering

    Energy Technology Data Exchange (ETDEWEB)

    Liu Yongchun; Xiao Yunfeng; Li Beibei; Jiang Xuefeng; Li Yan; Gong Qihuang [State Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)

    2011-07-15

    We study the Rayleigh scattering induced by a diamond nanocrystal in a whispering-gallery-microcavity-waveguide coupling system and find that it plays a significant role in the photon transportation. On the one hand, this study provides insight into future solid-state cavity quantum electrodynamics aimed at understanding strong-coupling physics. On the other hand, benefitting from this Rayleigh scattering, effects such as dipole-induced transparency and strong photon antibunching can occur simultaneously. As a potential application, this system can function as a high-efficiency photon turnstile. In contrast to B. Dayan et al. [Science 319, 1062 (2008)], the photon turnstiles proposed here are almost immune to the nanocrystal's azimuthal position.

  1. 'INCAB' - induced caving by blasting: software for blasting gallery (BG) panel of underground mines

    Energy Technology Data Exchange (ETDEWEB)

    Roy, P.P.; Kumar, A.; Sawmliana, C.; Bhagat, N.K. [Central Mining Research Institute, Dhanbad (India). Blasting Department

    2002-03-01

    In this paper, a brief methodology of induced caving by blasting is discussed in the perspective of one indigenously developed software package 'INCAB' for carrying out successful induced blasting in blasting gallery panels. The development is basically a part of one S & T project jointly sponsored by the Ministry of Coal (GOI) and Singareni Collieries Company Ltd. (SCCL). 'INCAB' is a comprehensive, menu-driven, graphics software package developed in JAVA (Swing) language under Windows environment for designing and analyzing induced caving by blasting in BG panels of underground coal mines. It can be operative in any standard Pentium based IBM compatible system with VGA display unit. Practical validity of the programme was tested in 4 operating BG panels in the country. 2 refs., 5 figs.

  2. Light-controlled microwave whispering-gallery-mode quasi-optical resonators at 50W LED array illumination

    Directory of Open Access Journals (Sweden)

    V. B. Yurchenko

    2015-08-01

    Full Text Available We present experimental observations of light-controlled resonance effects in microwave whispering-gallery-mode quasi-optical dielectric-semiconductor disk resonators in the frequency band of 5 GHz to 20 GHz arising due to illumination from a light emitting diode (LED of 50W power range. We obtain huge enhancement of photo-sensitivity (growing with the resonator Q-factor that makes light-microwave interaction observable with an ordinary light (no laser at conventional brightness (like an office lighting in quasi-optical microwave structures at rather long (centimeter-scale wavelength. We also demonstrate non-conventional photo-response of Fano resonances when the light suppresses one group of resonances and enhances another group. The effects could be used for the optical control and quasi-optical switching of microwave propagation through either one or another frequency channel.

  3. Richness of ferns and lycophytes in a gallery forest in the central region of Mato Grosso do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Carlos Rodrigo Lehn

    2013-03-01

    Full Text Available This paper presents the floristic survey of ferns and lycophytes occurring in a gallery forest in the central region of Mato Grosso do Sul, Brazil. In the study area, 29 species and 2 varieties were recorded. Dryopteridaceae and Pteridaceae were the richest families (8 and 5 species, respectively and Elaphoglossum and Blechnum were the richest genera (3 species each one. Preferably, the listed species occur within the forest (68%, they occupy the terrestrial substrate (77.4%, and they are hemicryptophyte (77.4% and rosulate (64.5%. We observed four species still not mentioned for Mato Grosso do Sul, which are Blechnum lanceola L., Elaphoglossum pachydermum (Fée T. Moore, Lindsaea lancea (L. Bedd var lancea, and Mickelia nicotianifolia (Sw. R. C. Moran et al., which has its southern limit of distribution in Brazil, in the study area.

  4. Tunable waveguide and cavity in a phononic crystal plate by controlling whispering-gallery modes in hollow pillars

    DEFF Research Database (Denmark)

    Jin, Yabin; Fernez, Nicolas; Pennec, Yan;

    2016-01-01

    We investigate the properties of a phononic crystal plate with hollow pillars and introduce the existence of whispering-gallery modes (WGMs). We show that by tuning the inner radius of the hollow pillar, these modes can merge inside both Bragg and low frequency band gaps, deserving phononic crystal...... and acoustic metamaterial applications. These modes can be used as narrow pass bands for which the quality factor can be greatly enhanced by the introduction of an additional cylinder between the hollow cylinder and the plate. We discuss some functionalities of these confined WGM in both Bragg and low...... frequency gaps for wavelength division in multiplexer devices using heteroradii pillars introduced into waveguide and cavity structures....

  5. Frequency tuning of the whispering-gallery modes of silica microspheres for cavity quantum electrodynamics and spectroscopy.

    Science.gov (United States)

    von Klitzing, W; Long, R; Ilchenko, V S; Hare, J; Lefèvre-Seguin, V

    2001-02-01

    We have tuned the whispering-gallery modes of a fused-silica microresonator over nearly 1 nm at 800 nm, i.e., over half a free spectral range, or 10(6) linewidths of the resonator. This result has been achieved by use of a new method based on the stretching of a two-stem microsphere. We describe devices that will permit new cavity QED experiments with this high- Q optical resonator when it is desirable to optimize its coupling to emitters with given transition frequencies. The demonstrated tuning capability is compatible with both UHV and low-temperature operation, which should be useful for future experiments with laser-cooled atoms or single quantum dots.

  6. Tailoring the plasmonic whispering gallery modes of a metal-coated resonator for potential application as a refractometric sensor.

    Science.gov (United States)

    Guo, Chang-Lei; Che, Kai-Jun; Gu, Guo-Qiang; Cai, Guo-Xiong; Cai, Zhi-Ping; Xu, Hui-Ying

    2015-02-20

    Plasmonic whispering gallery (WG) modes confined in metal-coated resonators are theoretically investigated by electromagnetic analyses. The resonance can be tuned from internal surface plasmonic WG modes to the hybrid state of the plasmonic mode by an introduced isolation layer. As the coated metal is reduced in size, the optical resonance is shifted out by the mode coupling of the internal and external surface plasmonic WG modes. Based on the optical leak of the plasmonic WG mode, the optical influences led by the surroundings with a variable refractive index are considered. Device performance criteria such as optical power leak, resonant wavelength shift, and threshold gain are studied. Full wave simulations are also employed and the results present good consistency with analytic solutions. The metal-coated resonator assisted by an active material is expected to provide promising performance as a refractometric sensor.

  7. Frequency tuning of single photons from a whispering-gallery mode resonator to MHz-wide transitions

    DEFF Research Database (Denmark)

    Schunk, G.; Vogl, U.; Sedlmeir, F.

    2016-01-01

    Quantum repeaters rely on interfacing flying qubits with quantum memories. The most common implementations include a narrowband single photon matched in bandwidth and central frequency to an atomic system. Previously, we demonstrated the compatibility of our versatile source of heralded single...... photons, which is based on parametric down-conversion in a triply resonant whispering-gallery mode resonator, with alkaline transitions [Schunk et al., Optica 2015, 2, 773]. In this paper, we analyse our source in terms of phase matching, available wavelength-tuning mechanisms and applications...... to narrowband atomic systems. We resonantly address the D1 transitions of caesium and rubidium with this optical parametric oscillator pumped above its oscillation threshold. Below threshold, the efficient coupling of single photons to atomic transitions heralded by single telecom-band photons is demonstrated...

  8. Integrating a DNA Strand Displacement Reaction with a Whispering Gallery Mode Sensor for Label-Free Mercury (II) Ion Detection.

    Science.gov (United States)

    Wu, Fengchi; Wu, Yuqiang; Niu, Zhongwei; Vollmer, Frank

    2016-07-29

    Mercury is an extremely toxic chemical pollutant of our environment. It has attracted the world's attention due to its high mobility and the ease with which it accumulates in organisms. Sensitive devices and methods specific for detecting mercury ions are, hence, in great need. Here, we have integrated a DNA strand displacement reaction with a whispering gallery mode (WGM) sensor for demonstrating the detection of Hg(2+) ions. Our approach relies on the displacement of a DNA hairpin structure, which forms after the binding of mercury ions to an aptamer DNA sequence. The strand displacement reaction of the DNA aptamer provides highly specific and quantitative means for determining the mercury ion concentration on a label-free WGM sensor platform. Our approach also shows the possibility for manipulating the kinetics of a strand displacement reaction with specific ionic species.

  9. Temporal Dynamics and Resource Availability for Drosophilid Fruit Flies (Insecta, Diptera in a Gallery Forest in the Brazilian Savanna

    Directory of Open Access Journals (Sweden)

    Henrique Valadão

    2010-01-01

    Full Text Available Seasonality can cause severe bottlenecks in natural populations, even leading to local extinction. Large variation in resource availability may explain the bottlenecks, but the role of these variations is still poorly understood. The goal of this study was to analyze if temporal variations in the guild of drosophilids breeding in fruits of Mauritia flexuosa (Arecaceae can be explained by the shortage of this resource during the dry season. Fruits of M. flexuosa were collected over one year in a gallery forest located in the Central Brazilian Savanna. The drosophilid assemblage varied over time, with a lower density of species and of individuals in the dry season, when the percentage of colonized fruits was also smaller. These findings suggest that although the fruits were available during the dry season, they were underused. This way, the resource availability does not seem to regulate the community in the dry season.

  10. Selective excitation of Fabry-Perot or whispering-gallery mode-type lasing in GaN microrods

    Energy Technology Data Exchange (ETDEWEB)

    Baek, Hyeonjun; Hyun, Jerome K.; Chung, Kunook; Oh, Hongseok; Yi, Gyu-Chul, E-mail: gcyi@snu.ac.kr [Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)

    2014-11-17

    Lasing from long semiconductor nanorods is dictated by Fabry-Perot (FP) resonances whereas that from large-diameter microrods is determined by whispering gallery modes (WGMs). Lengths and diameters intermediate between the two systems represent an important size regime for photonics and electronics, but have not been studied in detail. Here, we report on the detection of FP and WGM lasing emissions from a single GaN microrod, and demonstrate the ability to switch between the two lasing mechanisms by translating the excitation beam along the microrod. The competition between FP and WGM-type lasing was studied by finite-difference time-domain simulation and statistical analysis by measuring microrods of various diameters. Finally, control over the relative lasing intensities originating from either FPs or WGMs was demonstrated by tuning the polarization of the emission.

  11. Thermo-Optical Tuning of Whispering Gallery Modes in Erbium:Ytterbium Doped Glass Microspheres to Arbitrary Probe Wavelengths

    Science.gov (United States)

    Watkins, Amy; Ward, Jonathan; Chormaic, Síle Nic

    2012-05-01

    We present experimental results on an all-optical, thermally-assisted technique for broad range tuning of microsphere cavity resonance modes to arbitrary probe wavelengths. An erbium:ytterbium co-doped phosphate glass (Schott IOG-2) microsphere is pumped at 978 nm via the supporting stem and the heat generated by absorption of the pump light expands the cavity and changes the refractive index. This is a robust tuning method that decouples the pump from the probe and allows fine tuning of the microsphere's whispering gallery modes. Pump/probe experiments were performed to demonstrate thermo-optical tuning to specific probe wavelengths, including the 5S1/2 F= 3 to 5P3/2 F'= 4 laser cooling transition of rubidium-85. This is of particular interest for cavity quantum electrodynamics (QED)-type experiments, while the broad tuning range achievable is useful for integrated photonic devices, including sensors and modulators.

  12. Detection and size measurement of individual hemozoin nanocrystals in aquatic environment using a whispering gallery mode resonator

    CERN Document Server

    Kim, Woosung; Zhu, Jiangang; Faraz, Monifi; Coban, Cevayir; Yang, Lan; 10.1364/OE.20.029426

    2013-01-01

    We, for the first time, report the detection and the size measurement of single nanoparticles (i.e. polystyrene) in aquatic environment using mode splitting in a whispering gallery mode (WGM) optical resonator, namely a microtoroid resonator. Using this method we achieved detecting and measuring individual synthetic hemozoin nanocrystals, which are a hemoglobin degradation by-product of malarial parasites, dispersed in a solution or in air. The results of size measurement in solution and in air agree with each other and with those obtained using scanning electron microscope and dynamic light scattering. Moreover, we compare the sensing capabilities of the degenerate (single resonance) and non-degenerate (split mode, doublet) operation regimes of the WGM resonator.

  13. Technical feasibility of a seabed gallery seawater intake at Ras Abu Ali Island, Arabian Gulf, Saudi Arabia

    KAUST Repository

    Rachman, Rinaldi

    2014-07-23

    (less than 1%) with porosity ranging between 0.29 and 0.41 and hydraulic conductivities up to 22.5 m3/d. It was determined that seabed gallery development is suitable at this location. Preliminary design for a seabed gallery filter was developed using a series of cells. Each gallery cell represents a unit that can be simply duplicated to meet the overall intake capacity requirement. Each gallery cell is designed to have minimum 8 m/d infiltration rate through five layers of engineered sand and gravel. The total thickness of the filter bed is 4.5 m (2 m top layer). The dimensions of the proposed cells are 100 × 30 m and each cell will conservatively provide 24,000 m3/d of filtered water. The design is flexible to meet the required capacity. For example, a SWRO desalination plant which produces 54,000 m3/d product water from 38,000 mg/L salinity seawater at a 45% conversion rate will require a minimum of 6 cells using the preliminary design. © 2014 © 2014 Balaban Desalination Publications. All rights reserved.

  14. Efficient analysis and design of low-loss whispering-gallery-mode coupled resonator optical waveguide bends

    CERN Document Server

    Pishko, Svetlana V; Benson, Trevor M; Boriskina, Svetlana V

    2007-01-01

    Waveguides composed of electromagnetically-coupled optical microcavities (coupled resonator optical waveguides or CROWs) can be used for light guiding, slowing and storage. In this paper, we present a two-dimensional analysis of finite-size straight and curved CROW sections based on a rigorous Muller boundary integral equations method. We study mechanisms of the coupling of whispering gallery (WG) modes and guiding light around bends in CROWs composed of both identical and size-mismatched microdisk resonators. Our accurate analysis reveals differences in WG modes coupling in the vicinity of bends in CROWs composed of optically-large and wavelength-scale microcavities. We propose and discuss possible ways to design low-loss CROW bends and to reduce bend losses. These include selecting specific bend angles depending on the azimuthal order of the WG mode and tuning the radius of the microdisk positioned at the CROW bend.

  15. Arquitectura, arte funcional

    Directory of Open Access Journals (Sweden)

    Monjo Carrió, Juan

    1985-10-01

    Full Text Available The begining of this work is devoted to the analysis of the concepts of Art, Science and Technique and their historical evolution, distinguishing between "fine arts" and "technique arts". Following, Architect and Architecture terms are defined both conceptual and professionally, analysing as well its historical evolution and pointing out the interdependence between the architectural conception as "fine art" and the constructive technology as "technique art", finally reminding the necessary scientific base of this one (Construction Physics. Consequently, the need for architecture professionals of constructive technology knowledge, is also reminded. At last, the functional character of the Architecture (Architecture as a "functional art" is analysed, going over the three basic aspects of this functionality (Integrity-firmitas, Habitability-utilitas and Aesthetics-venustas.Se inicia el trabajo analizando los conceptos de Arte, Ciencia y Técnica y su evolución histórica, distinguiendo entre ¡as "bellas artes" y las "artes técnicas". A continuación se definen los conceptos de Arquitecto y Arquitectura, tanto conceptual como profesionalmente, analizando, asimismo, su evolución histórica y haciendo hincapié en la interdependencia entre la concepción arquitectónica como "bella arte" y la tecnología constructiva como "arte técnica", para terminar recordando la necesaria base científica de esta última (la Física de la Construcción. Como consecuencia, se recuerda la necesidad de los conocimientos de la tecnología constructiva en los arquitectos profesionales. Por último, se analiza el carácter funcional de la Arquitectura (Arquitectura como "arte funcional" y se hace un breve recorrido por los tres aspectos básicos de esa funcionalidad (Integridad-firmitas, Habitabilidad-utilitas y Estética-venustas.

  16. When Art & Finance Collide

    Institute of Scientific and Technical Information of China (English)

    Yu Lintao

    2011-01-01

    CHINA'S art market is on fire.As sales and prices break records,a new force has appeared in the market-organized art finance in the form of art trust funds and artwork exchanges.It was reported that the anonymous winner of the bid for the Song Dynasty calligraphy work Dizhuming by Huang Tingjian (1045-1105).which was sold for a staggering 436.

  17. The martial arts.

    Science.gov (United States)

    Terry, Charles M

    2006-08-01

    Given the increasing popularity of the martial arts, it is likely that physicians in all specialties encounter patients who participate. From pediatric patients, to geriatric patients, to those living with various disabilities, the martial arts may offer physical, psychologic, and therapeutic benefits. An appreciation of the physical demands of the martial arts is crucial to understanding the pathogenesis of injury as well as to planning treatment and prevention strategies and to determining safe return to participation after injury.

  18. Characteristics of Matisse art

    Institute of Scientific and Technical Information of China (English)

    葛环玉

    2012-01-01

      Henri Matisse, a rewritten history of modern art, is a deserved leader of Fauvism. Not subject to the limitations inherent color on color relationships, There is an decorative effect on the screen with Matisse. The u-nity of pure colors and lines, characters and background fusion in a decorative techniques. Matisse embarked on a far-reaching impact on 20th-century art, the avant-garde art of the road, the influence of his art and ideas to the younger generation is inestimable

  19. Art in Hospitals Project

    DEFF Research Database (Denmark)

    Baceviciute, Sarune; Bruni, Luis Emilio; Burelli, Paolo

    in hospitals. Most of these guidelines favor figurative over abstract art, based on ideas leaning to the emotional congruence theory, which would claim that abstract art leads to ambiguity and therefore it could augment the current emotional base-line of an already stressed patient. The early ethnographic...... studies of the “Art in Hospitals” project challenged this perspective by investigating the positive or negative effects of “lower-level” specific features (e.g.: bright colors vs. darker, contrast, predominant shapes) independent of whether they were present in abstract or figurative art, which...

  20. Computer Games and Art

    Directory of Open Access Journals (Sweden)

    Anton Sukhov

    2015-10-01

    Full Text Available This article devoted to the search of relevant sources (primary and secondary and characteristics of computer games that allow to include them in the field of art (such as the creation of artistic games, computer graphics, active interaction with other forms of art, signs of spiritual aesthetic act, own temporality of computer games, “aesthetic illusion”, interactivity. In general, modern computer games can be attributed to commercial art and popular culture (blockbuster games and to elite forms of contemporary media art (author’s games, visionary games.

  1. Art Meta-4

    DEFF Research Database (Denmark)

    Mehlsen, Camilla; Jensen, Hans Siggaard

    2003-01-01

    Managing through Variety: The European Style. 3rd European Academy of Management (EURAM) Conference , Milan (Italy). 2003 Short description: This paper focuses on the use of art metaphors in today?s world of management and organizational practice. Abstract: This paper focuses on the use of art...... metaphors in today?s world of management and organizational practice. It tells the story of how art has entered the organizational stage as a metaphorical role model and how art is a metaphor we live and manage by. The story is in particular concerned with artistic images of organizations that frame...

  2. School of the Arts seeks arts organizations and artists for participation in ArtsFusion 2008

    OpenAIRE

    Adams, Louise

    2008-01-01

    Virginia Tech School of the Arts announces ArtsFusion 2008, a weeklong celebration of the arts throughout the New River Valley scheduled for April 12 through April 19. ArtsFusion 2008 is seeking participation by arts organizations and artists both on campus and throughout the New River Valley working in music, film, theatre, dance, creative writing, and the visual arts.

  3. Influence Of Art System Of Environmental Art And Design

    Institute of Scientific and Technical Information of China (English)

    贾弱苗

    2015-01-01

    Environmental art design refers to the construction of indoor and outdoor space environment, integration design a practical way of art through art and design.Art system is the existence of a specific period of art ideas and knowledge systems, as well as artwork for the existence of production, dissemination, complete social mechanisms consumption evaluation. Environmental art design in its production to consumption process, restriction and help inseparable art system.

  4. Will Hungarian Private Collectors Turn International? Private Engagement in Contemporary Art in East Central Europe

    Directory of Open Access Journals (Sweden)

    Gábor Ébli

    2012-01-01

    Full Text Available The recent spectacular surge in private collecting in Hungary – which began around the fall of Communism and abated only with the current financial crisis – can be seen as part of the steady expansion of private involvement in the art scene, with some of these developments pointing beyond local significance. This paper examines the historical roots and the current structural characteristics of this spread by looking at the motifs and the choices of collectors, their co-operation with commercial galleries and public museums, as well as the advantages and side-effects of blossoming art patronage. Based on ten years of research, including close to two-hundred interviews with the actors in the art world in Hungary, I argue that private collecting, which had already strongly benefitted from the cultural thaw of the last decades of the Communist regime in the country, has earned over the past quarter-century high social status, the promise of lucrative investment and the liberty of creative self-expression for buyers of modern and, subsequently, contemporary art. The paper aims briefly to place these multiple factors in an international context; further research into art collecting in Eastern Europe will be needed to yield a more complete comparative regional study.

  5. "History of art" by Ernst Gombrich" (en inglés

    Directory of Open Access Journals (Sweden)

    Antón Capitel

    2012-12-01

    Full Text Available Abstract The text is a critique of Ernst Gombrich´s book “History of Art”, old work translated into many languages, which in 2011 was published as a pocket edition in Spanish. Rather than providing  a criticism of the content, only certain aspects are mentioned, the critique is centered around comments on the author´s choice of anthology taken from the universal history of art. In this way not only does the lack of presence of Spanish art in general come under particular criticism, but most of all the feeble  representation of the Spanish collection of the Prado museum, the finest gallery in the world. Under scrutiny also come the  unwise choice of several examples and the overabundance of British and Dutch art of a minor character. Similarly, the author deplores the little sense of references to architecture since the  Baroque, and, with reference to the content, the maintaining of the old and offensive thesis regarding the supremacy of art in Protestant countries over that of Catholic ones.Key wordsart history, art, architecture, critique, reference

  6. Is this a "Fettecke" or just a "greasy corner"? About the capability of laypersons to differentiate between art and non-art via object's originality.

    Science.gov (United States)

    Haertel, Manuela; Carbon, Claus-Christian

    2014-01-01

    Which components are needed to identify an object as an artwork, particularly if it is contemporary art? A variety of factors determining aesthetic judgements have been identified, among them stimulus-related properties such as symmetry, complexity and style, but also person-centred as well as context-dependent variables. We were particularly interested in finding out whether laypersons are at all able to distinguish between pieces of fine art endorsed by museums and works not displayed by galleries and museums. We were also interested in analysing the variables responsible for distinguishing between different levels of artistic quality. We ask untrained (Exp.1) as well as art-trained (Exp.2) people to rate a pool of images comprising contemporary art plus unaccredited objects with regard to preference, originality, ambiguity, understanding and artistic quality. Originality and ambiguity proved to be the best predictor for artistic quality. As the concept of originality is tightly linked with innovativeness, a property known to be appreciated only by further, and deep, elaboration (Carbon, 2011i-Perception, 2, 708-719), it makes sense that modern artworks might be cognitively qualified as being of high artistic quality but are meanwhile affectively devaluated or even rejected by typical laypersons-at least at first glance.

  7. Interpretation of the 21st century art gallery in Jinze city of Japan%对日本金泽21世纪美术馆的解读

    Institute of Scientific and Technical Information of China (English)

    董大伟

    2010-01-01

    以日本金泽市21世纪美术馆为例,介绍了妹岛和世与西泽立卫合作设计的方案,结合建筑师特有建筑设计风格从空间组织和结构元素两个方面来对这个作品进行解读,力图透过这座建筑的现代甚至是先锋的外表发现其隐藏的传统特征.

  8. Tactics of Remodeling for the Art Gallery of OCT Inter-continental Hotel%"华"美术馆改造策略

    Institute of Scientific and Technical Information of China (English)

    孟岩

    2009-01-01

    @@ "华"美术馆现址原是建于20世纪80年代早期的深圳湾大酒店的洗衣房.深圳湾大酒店在建成后20年的时间里曾经是华侨城一座地标式建筑,它简洁明晰的现代建筑风格和优质的酒店服务在很多深圳人的记忆中都留下了深刻印象.

  9. A Record of the Finishing Works Design for Remodeling of the National Art Gallery%中国美术馆改造装修工程设计

    Institute of Scientific and Technical Information of China (English)

    庄惟敏; 宿利群

    2003-01-01

    本文结合中国美术馆改造装修工程,以工程报告的方式论述了该改造项目保持风格,提高标准,完善功能的指导思想,展示了改造装修完成后的中国美术博物馆的新的风貌.

  10. Keiserlikud portreegaleriid : kujunemislugu ning osa poliitilises ja kunstielus = Russian Imperial Portrait Galleries - Their History and Role in Art and Politics / Jelizaveta Renne

    Index Scriptorium Estoniae

    Renne, Jelizaveta, 1951-

    2008-01-01

    Portreemaalide kollektsioneerimisest Venemaal 18. sajandil - era- ja keiserlike portreegaleriide loomisest, kogude komplekteerimisest, ajaloolisest tähtsusest ja saatusest. Çeşme paleest ja kogust, Marmorpalee pildigaleriist, Romanovite portreegaleriist

  11. Art Literature and Theory of Art

    NARCIS (Netherlands)

    Weststeijn, T.

    2013-01-01

    In contrast to theories of poetry or rhetoric, no complete ancient theory of the figurative arts survives. Renaissance authors wishing to underpin the "rebirth" of painting therefore had to resort to a variety of strategies to invent a new genre. Literary metaphors and fragments from artists’ biogra

  12. Wearable Arts of Japan: Seattle Art Museum.

    Science.gov (United States)

    Loudon, Sarah

    1996-01-01

    Presents four lesson plans centered around artworks involving Japanese clothing. Instructional materials include color plates of a 19th century print showing women's clothing, two beautifully handcrafted coats, and a coverlet in kimono form. The lesson plans discuss Japanese clothing, art, society, and culture. (MJP)

  13. Segmented ART - The new era in ART?

    Science.gov (United States)

    Ozgur, Kemal; Humaidan, Peter; Coetzee, Kevin

    2016-06-01

    Currently up to 4% of infants born in developing countries are conceived through assisted reproductive technology (ART). Even though most of these conceptions occur and progress without complications, ART procedures and processes may increase iatrogenesis through complications in - and after conception. We herein review and discuss the clinically and scientific implications and evidence of iatrogenesis, and show how the evolution in ART technologies and procedures has led to the current presumption that frozen embryo transfer might be a more optimal strategy than fresh embryo transfer, in terms of not only reproduction, but also of maternal and fetal outcomes. There is increasing scientific evidence to support the notion that controlled ovarian stimulation could induce significant changes to the endocrine profile of a reproductive cycle, especially to the reproductively important early luteal phase. These changes may not only have a negative effect on implantation and early placentation, but also on the mother, the fetus, and the infant. The overt consequences of controlled ovarian stimulation include ovarian hyperstimulation syndrome, reduced embryo implantation, increased ectopic pregnancy, and altered placentation and fetal growth. The cumulative scientific evidence from this review suggests that GnRHa trigger in segmented ART might constitute the future routine treatment regimen for IVF patients, providing a safe, effective, and patient friendly treatment.

  14. Sequencing Events: Exploring Art and Art Jobs.

    Science.gov (United States)

    Stephens, Pamela Geiger; Shaddix, Robin K.

    2000-01-01

    Presents an activity for upper-elementary students that correlates the actions of archaeologists, patrons, and artists with the sequencing of events in a logical order. Features ancient Egyptian art images. Discusses the preparation of materials, motivation, a pre-writing activity, and writing a story in sequence. (CMK)

  15. I: Making Art

    Science.gov (United States)

    Rosenfeld, Malke; Johnson, Marquetta; Plemons, Anna; Makol, Suzanne; Zanskas, Meghan; Dzula, Mark; Mahoney, Meg Robson

    2014-01-01

    Writing about the teaching artist practice should mean writing about art making. As both teacher and artist, the authors are required to be cognizant of their own art-making processes, both how it works and why it is important to them, in order to make this process visible to their students. They also need the same skills to write about how and…

  16. Experiencing affective interactive art

    NARCIS (Netherlands)

    Bialoskorski, Leticia S.S.; Westerink, Joyce H.D.M.; Broek, van den Egon L.

    2010-01-01

    The progress in the field of affective computing enables the realization of affective art. This paper describes the affective interactive art system Mood Swings, which interprets and visualizes affect expressed by a person. Mood Swings is founded on the integration of a framework for affective move

  17. PLANNING THE ART ROOM.

    Science.gov (United States)

    POPOLIZIO, VINCENT J.; AND OTHERS

    FACILITIES FOR CARRYING OUT AN ART PROGRAM MUST BE DESIGNED TO MEET THE NEEDS OF STUDENTS IN SCHOOL AND THOSE ENROLLED IN ADULT PROGRAMS. PROVISIONS MUST BE INCLUDED FOR PAINTING AND DRAWING, THE GRAPHIC ARTS, GENERAL CRAFTS, MODELING, SCHULPTURING, PHOTOGRAPHY, SERIGRAPHY, AND MECHANICAL DRAWING. WORK CENTERS AND TRAFFIC FLOW NEED CAREFUL…

  18. Messurement, Diagram, Art

    DEFF Research Database (Denmark)

    May, Michael; Stjernfelt, Frederik

    1996-01-01

    Discussion of the semiotic concept of the iconic sign according to Charles S. Peirce and its importance for the understanding of "diagrammatic reasoning" in science and art.......Discussion of the semiotic concept of the iconic sign according to Charles S. Peirce and its importance for the understanding of "diagrammatic reasoning" in science and art....

  19. Sentiment and art prices

    NARCIS (Netherlands)

    Penasse, J.N.G.; Renneboog, L.D.R.; Spaenjers, C.

    2014-01-01

    We hypothesize the existence of a slow-moving fad component in art prices. Using unique panel survey data on art market participants’ confidence levels in the outlook for a set of artists, we find that sentiment indeed predicts short-term returns.

  20. Bringing Art to Schools.

    Science.gov (United States)

    Butterfield, Eric

    2000-01-01

    Discusses the Art and Architecture program that involves K-12 students in the creation of public art. The program provides students with a sense of ownership through design and construction assignments created as part of an integrated curriculum, including mock bids and interpreting a floor plan into an elevation. Tips on how architects can start…

  1. Arte Brasileno Erudito y Arte Brasileno Popular. (Brazilian Fine Art and Brazilian Popular Art)

    Science.gov (United States)

    Valladares, Clarival Do Prado

    1969-01-01

    Class differences in Brazil explain the inequality between the art produced in the high strata of society and that originating in the economically inferior communities. Genuine expression of art degenerates for two reasons: the influence of modern industrial civilization and the tendency to satisfy the taste of the acquisitive group. (Author/MF)

  2. Elegant Art Nouveau

    Science.gov (United States)

    Fontes, Kris

    2005-01-01

    Gustav Klimt (1862-1918), a Viennese painter, was the founder of the Vienna Secession, the Austrian Art Nouveau movement. Art Nouveau is characterised by flowing lines and flat designs based on organic structures. This style is found in the symbolic aspect of Klimt's later work, and in the works of other artists of the late 1890s and early 1900s…

  3. Migrating Art History

    DEFF Research Database (Denmark)

    Ørum, Tania

    2012-01-01

    Review of Hiroko Ikegami, The Great Migrator. Robert Rauschenberg and the Global Rise of American Art. Cambridge Mass., The MIT Press, 2010. 277 pages. ISBN 978-0-262-01425-0.......Review of Hiroko Ikegami, The Great Migrator. Robert Rauschenberg and the Global Rise of American Art. Cambridge Mass., The MIT Press, 2010. 277 pages. ISBN 978-0-262-01425-0....

  4. Art Education Is Violent

    Science.gov (United States)

    Tavin, Kevin

    2014-01-01

    In an era that is rife with aggression and hostility, most art educators hold close to their hearts the belief that they, and their students, can contribute to making the world a better place. Through their acts as teachers and the daily work of art education, they often strive toward creating a space of "non-violence." For K-12…

  5. Art Education with Attitude

    Science.gov (United States)

    Williams, Jere

    2016-01-01

    Purpose: This paper explores the way in which art education advances the goals of citizenship education. In the first section of this paper the similarities between ethical and aesthetic concepts will be outlined and the visual art symbol system will be carefully examined. Findings: It will be argued that the transference of a value-adaptive…

  6. Art and Money

    NARCIS (Netherlands)

    Goetzmann, W.; Renneboog, L.D.R.; Spaenjers, C.

    2009-01-01

    This paper investigates the impact of equity markets and top incomes on art prices. Using a long-term art market index that incorporates information on repeated sales since the eighteenth century, we demonstrate that both same-year and lagged equity market returns have a significant impact on the pr

  7. Art as Peace Building

    Science.gov (United States)

    Marshall, Laurie

    2014-01-01

    Art educators can "critique" senseless violence--mistreatment, exclusion, intimidation, bullying, violation, abuse, corruption, murder, and war--by unleashing the power of students' creativity. In this article, the author, sharing her philosophical context, discusses how art is preventative medicine with the power to transform the cycle…

  8. Parallels in the Arts

    Science.gov (United States)

    Laffey, Grace

    1972-01-01

    A mini-course of nine weeks was organized as a laboratory course to survey relationships in literature, music, and art. Three periods in the arts (Romanticism, Impressionism, and Contemporary) were matched with three major activities; the basic areas of study and activity were poetry, short story, and novel. (Author)

  9. The Talking Art Museum

    Science.gov (United States)

    Bundy, Jacqui

    2009-01-01

    Every year, fourth graders at Sterling Morton Elementary School in Ohio present a talking art museum for the school and community. In this article, the author describes a lesson on art history which culminates in an activity showcasing all the students' finished paintings in gold frames. A student stands behind the painting and pokes his or her…

  10. The Art of Mexico.

    Science.gov (United States)

    Saccardi, Marianne

    1997-01-01

    Provides an annotated bibliography of books for grades K and up which explores the folklore, poetry, fiction, and art of Mexico, and focuses on the Mayans and Aztecs and Diego Rivera and Frida Kahlo. Also suggests various research, reading, drama, music, social studies, physical education, and art activities and lists related videos and Internet…

  11. Arte, só na aula de arte? = Art, only in the art class?

    Directory of Open Access Journals (Sweden)

    Martins, Mirian Celeste

    2011-01-01

    Full Text Available A pergunta que dá título ao artigo é o mote da conversa que o texto deseja compartilhar. O convite é para percorrer trajetos em encontros com a arte, com a palavra “estética”, com a potencialidade da arte contemporânea, com o “olhar de missão francesa” que teima em considerar a arte como expressão da beleza. No percurso, a proposição da leitura de uma imagem incompleta, tenta provocar idas e voltas conceituais na percepção do próprio ato de leitura oferecida como curadoria educativa na processualidade da mediação cultural. Declanchar, tirar a tranca. Não será esta a tarefa maior da mediação cultural: abrir o que estava travado, libertar o olhar amarrado ao já conhecido para ver além? Não será este o sentido da educação estética? Os territórios de arte de arte & cultura, instigando o pensamento rizomático, não seriam nutrição estética para ir além das obras de arte conhecidas e das biografias dos artistas? Na ampliação de horizontes, cabe ao leitor a resposta: Afinal, arte, só na aula de arte?

  12. Art Meta-4

    DEFF Research Database (Denmark)

    Mehlsen, Camilla; Jensen, Hans Siggaard

    2003-01-01

    Managing through Variety: The European Style. 3rd European Academy of Management (EURAM) Conference , Milan (Italy). 2003 Short description: This paper focuses on the use of art metaphors in today?s world of management and organizational practice. Abstract: This paper focuses on the use of art me...

  13. Contemporary Danish book art

    DEFF Research Database (Denmark)

    Larsen, Poul Steen

    the Metropolitan Museum of Art, Thomas J. Watson Library, Helge Ernst, illustrator, Poul Kristensen, printer, Ole Olsen, bookbinder, exhibition catalog......the Metropolitan Museum of Art, Thomas J. Watson Library, Helge Ernst, illustrator, Poul Kristensen, printer, Ole Olsen, bookbinder, exhibition catalog...

  14. Translation is Art

    Institute of Scientific and Technical Information of China (English)

    苟婧妤

    2004-01-01

    This paper focuses on the art in translation.First,the translation and art are defined and some historic views are illustrated.Then the author lays emphasis on how to convey the artistic information and provides some methods on how to achieve artistic effect in translation.

  15. Big Ideas in Art

    Science.gov (United States)

    Day, Kathleen

    2008-01-01

    In this article, the author shares how she was able to discover some big ideas about art education. She relates how she found great ideas to improve her teaching from the book "Rethinking Curriculum in Art." She also shares how she designed a "Big Idea" unit in her class.

  16. Tangrams: Puzzles of Art

    Science.gov (United States)

    Fee, Brenda

    2009-01-01

    Challenging one's brain is the beginning of making great art. Tangrams are a great way to keep students thinking about their latest art project long after leaving the classroom. A tangram is a Chinese puzzle. The earliest known reference to tangrams appears in a Chinese book dated 1813, but the puzzles existed long before that date. The puzzle…

  17. Gerontology and the Arts.

    Science.gov (United States)

    Jones, Jean Ellen, Ed.

    1982-01-01

    Reviews research on the place of the arts in programs for the elderly. In nine articles deals with characteristics and attitudes of adult students in art and music, dance therapy, and creativity. Discusses the aging advocacy movement and suggests it can be useful to program planners and gerontologists. (JAC)

  18. Thinking about Art: Encouraging Art Appreciation in Early Childhood Settings.

    Science.gov (United States)

    Epstein, Ann S.

    2001-01-01

    Examines the place of art appreciation in early childhood education programs. Discusses historical changes in philosophies of art education and young children's capability for appreciating art. Presents suggestions for including art appreciation in the preschool curriculum, and describes ways to tie art activities to children's interests,…

  19. Support for Arts Education. State Arts Agency Fact Sheet

    Science.gov (United States)

    National Assembly of State Arts Agencies, 2011

    2011-01-01

    Supporting lifelong learning in the arts is a top priority for state arts agencies. By supporting arts education in the schools, state arts agencies foster young imaginations, address core academic standards, and promote the critical thinking and creativity skills essential to a 21st century work force. State arts agencies also support…

  20. Old Friends, Bookends: Art Educators and Art Therapists

    Science.gov (United States)

    Allison, Amanda

    2013-01-01

    This viewpoint presents a reflection on a meaningful relationship that developed between a university art education department and a local art therapy studio. Such partnerships are desirable and mutually beneficial because of the significant interest many art educators have in the field of art therapy. The author, an art educator, describes the…

  1. Authenticity in Anatomy Art.

    Science.gov (United States)

    Adkins, Jessica

    2017-01-12

    The aim of this paper is to observe the evolution and evaluate the 'realness' and authenticity in Anatomy Art, an art form I define as one which incorporates accurate anatomical representations of the human body with artistic expression. I examine the art of 17th century wax anatomical models, the preservations of Frederik Ruysch, and Gunther von Hagens' Body Worlds plastinates, giving consideration to authenticity of both body and art. I give extra consideration to the works of Body Worlds since the exhibit creator believes he has created anatomical specimens with more educational value and bodily authenticity than ever before. Ultimately, I argue that von Hagens fails to offer Anatomy Art 'real human bodies,' and that the lack of bodily authenticity of his plastinates results in his creations being less pedagogic than he claims.

  2. Art-in-Design

    DEFF Research Database (Denmark)

    Degn Johansson, Troels

    This article outlines the author's continuous collaboration with the Danish art collective Superflex; an internationally recognised example of how contemporary art has taken interest in design practice in order to realise visions of change and empowerment. Setting off from Frayling's infamous...... distinction between research in, for, and through art and design, the author lays out this collaboration as a series of stepping back from an initial action research situation, that is, a case of research through design where the researcher is involved by means of strategic interest. However, by gradually...... distancing himself, by taking steps back from this situation, the author has sought to map out systematically the institutional contexts in which the art collective has been operating. In this way, it has become possible to understand further why art may maintain its original empowering role in design...

  3. Origins: science inspires art

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    From 8 December 2011 to 17 February 2012, Geneva University's physics faculty will be holding an exhibition called "L'Origine – un voyage entre la Science et l'Art". Thirty artists from Europe and Africa will be exhibiting their work.   The aim of the exhibition is to take the visitor on an imaginary journey to the origins of mankind and to show how science and art approach the same theme from different angles. The works on display will include pieces of Makonde art, a traditional art form native to Mozambique, created by artists of the Nairucu Arts centre. The cultural programme that will run alongside the exhibition will include lectures on contemporary scientific themes aimed at the general public. Visitors will also have the opportunity to discover "L’Origine", a book of poetry by Beatrice Bressan (Ed. Loreleo, Geneva, 2010), which was awarded the third prize in the “Poeti nella società&...

  4. Art and human nature

    Directory of Open Access Journals (Sweden)

    Mirta Toledo

    2008-06-01

    Full Text Available This article presents a visual artist’s point of view about art. This view confronts the Eurocentric traditional cannon with some ignored, but valuable traditions, thus proposing a contra-canon. These ideas are examined on the light of a variety of sources, including prehistoric, pre-Columbian, and 20th century art expressions, in a variety of media, from sculpture to literature. Recent art expressions are characterized by their incorporation of minority values and perspectives that challenge “universal” views. Using samples of works from Latino and African American artists, the author shows that, even today, art is a means to know the world and its people, to exhibit personal life, to create personal symbolism, and to show one’s identity or the search for it. Like the human nature it represents, art has multiple faces.

  5. Contemporary Art and Citizenship Education: The Possibilities of Cross-Curricular Links on the Level of Content

    Directory of Open Access Journals (Sweden)

    Metoda Kemperl

    2013-01-01

    Full Text Available Unlike the previous phenomenon of modern art, contemporary art strives to return to society and everyday life, while thematising the current issues that the individual faces here and now. One of its more frequent topics is that of sustainable development, and the accompanying issues of environment, values, relations to others, etc. All such topics are part of the concept of active citizenship, which is why understanding contemporary art calls for active citizenship. This particularly holds true for relational art, which demands active participation on the part of the viewer. This paper inquires into the possibilities of the connection of contemporary art and citizenship education in elementary schools. Contemporary pedagogic doctrine highly encourages cross-curricular teaching; therefore, I have focused my analysis on the curricula of the subjects of Art Education, and Citizenship and Patriotic Education and Ethics, determining that (from this perspective their link is quite troublesome. The absence of contemporary art from the curriculum of Art Education has been criticised on many occasions, but the problem of its curriculum seems to be of a conceptual nature. Only by a more intense inter-institutional link between schools and contemporary art galleries and museums can the common goals of art education and citizenship education be realised. This paper will, therefore, strive to show potential cross curricular links in content on three examples of participatory practices (Proletarians of All Countries, Beggar Robot and EU/Others, while warning (from the pedagogic perspective against the often neglected fact that contemporary art is experienced here and now.

  6. Dumbing down Art in America.

    Science.gov (United States)

    Swanger, David

    1993-01-01

    Argues that art education does not meet its objective of creativity and instead is replicative rather than original. Contends educational journals such as "Instructor" and "Good Apple" reduce fine art to its antithesis, popular art. Concludes that art educators must work diligently to protect fine art from becoming "dumb…

  7. Essays on Art and Education.

    Science.gov (United States)

    Geering, Adrian D.

    This document contains 10 essays which focus on various aspects of art education in the elementary, secondary, and postsecondary educational institutions of Australia. Titles are "Art Education in Australia," The Visual Arts and Society,""The Parallels Between Primitive Art and Child Art,""The Mildura Sculpture…

  8. Crush-2: Communicating research through a science-art collaboration

    Science.gov (United States)

    Mair, K.; Barrett, N.; Schubnel, A. J.; Abe, S.

    2011-12-01

    Historically, the Earth's environment and dynamics have influenced and inspired the arts. Art in turn is a powerful vehicle for expression of the natural world. It lends itself to public presentation in many forms and appeals to a diverse audience. Science-art collaborations provide a unique opportunity to connect with the public by taking science out of the classroom and into museums, galleries and public spaces. Here we investigate the use of contemporary digital sound-art in communicating geoscience research to the general public through the installation Crush-2. Crush-2, is an interactive sound-art installation exploring the microscopic forces released during the crushing of rock. Such processes have a strong influence on the sliding behaviour and hence earthquake potential of active faults. This work is a collaboration between sound artist and composer Natasha Barrett (Oslo) and geoscientists Karen Mair (University of Oslo), Alexandre Schubnel (Ecole Normale Superieure, Paris) and Steffen Abe (RWTH Aachen). Using a sonification technique, Barrett has assigned sound recorded from rocks, of different pitches, timbres and durations, to individual fracturing events produced in our 3D fault fragmentation models and laboratory rock breaking experiments. In addition, ultrasonic acoustic emissions recorded directly in the laboratory are made audible for our hearing and feature in the work. The installation space comprises a loudspeaker array and sensor enabled helmet with wireless headphones. By wearing the helmet, moving and listening, the audience explores an artistic interpretation of the scientific data in physical space. On entering the space, one is immediately immersed in a 3D cacophony of sound. Sustained or intermittent pings, burrs, plops and tingles jostle for position in our heads whilst high pitched delicate cascades juxtapose with deep thunder like rumbles. Depending on the user's precise path through the soundscape, the experience changes accordingly

  9. CREATIVE COLLISIONS: ARTS @CERN

    CERN Document Server

    CERN. Geneva

    2012-01-01

    In 2000, CERN hosted Signatures of the Invisible – one of the landmark initiatives in arts and science. In 2012, CERN is now initiating its own science/arts programme Collide@CERN in different arts disciplines. The first of these is in digital arts, and the international competition to find the winning artist is called the Prix Ars Electronica Collide@CERN. It was announced September 2011 at CERN’s first collaboration with an international arts festival – Ars Electronica in Linz. The competition attracted over 395 entries from 40 countries around the world. The winning artist, Julius Von Bismarck, will begin his two month residency here at CERN next month. Ariane Koek who leads on this initiative, discusses the residency programme, as well as the background about Art@CERN. History has shown that particle physics and the arts are great inspiration partners. The publication of the paper by Max Planck which gave birth to quantum mechanics as well as those by Einstein, heavily influenced some of the grea...

  10. Arte politécnico = Polytechnic art

    Directory of Open Access Journals (Sweden)

    María Eugenia Blázquez Rodríguez

    2014-12-01

    Full Text Available El diseño industrial desde la segunda mitad del siglo XX empieza a entenderse también como catalizador cultural, capaz de actuar como una forma de crítica cultural y social. Este papel se pone de manifiesto igualmente en una parte del arte contemporáneo. Sus caminos a menudo se cruzan, no sólo en este aspecto relativo a la funcionalidad social sino en otras cuestiones relativas a la manera de analizar la relación de los objetos con el espacio, es decir con nuestro entorno. El título hace mención a unas obras de arte basadas en las cualidades formales y simbólicas de los objetos provenientes de la tecnología y el diseño industrial, para ser llevadas al campo de la estética y de la percepción.  Abstract The industrial design from the second half of the 20th century starts being understood also as cultural ca-talyst, capable of acting as a form of cultural and social critique. This role is manifest equally for a part of the contemporary art. Their ways often cross, not only in this aspect relative to the social functionality but in other relative questions like analyzing the relation of the objects with the space, that is to say with our environment. The title make refernce to a few works of art based on the formal and symbolic qualities of the objects from the technology and the industrial design, to be taken to the field of the aesthetics and of the perception.

  11. Adding Insult to Imagery? Art Education and Censorship

    Science.gov (United States)

    Sweeny, Robert W.

    2007-01-01

    The "Adding Insult to Imagery? Artistic Responses to Censorship and Mass-Media" exhibition opened in January 16, 2006, Kipp Gallery on the Indiana University of Pennsylvania campus. Eleven gallery-based works, 9 videos, and 10 web-based artworks comprised the show; each dealt with the relationship between censorship and mass mediated…

  12. Adding Insult to Imagery? Art Education and Censorship

    Science.gov (United States)

    Sweeny, Robert W.

    2007-01-01

    The "Adding Insult to Imagery? Artistic Responses to Censorship and Mass-Media" exhibition opened in January 16, 2006, Kipp Gallery on the Indiana University of Pennsylvania campus. Eleven gallery-based works, 9 videos, and 10 web-based artworks comprised the show; each dealt with the relationship between censorship and mass mediated images. Many…

  13. ART ADVENTURE OF PHOTOGRAPHY

    Directory of Open Access Journals (Sweden)

    Atilla ILKYAZ

    2014-11-01

    Full Text Available The question whether camera should be regarded as a technical device that only enables opportunity of duplicating images mechanically or an instrument that express artistic sensation of individual has strained the minds of artists, photographers, critics for years. The argument whether photograph is an art or not has enabled photograph a different dimension and has been discussed in details. In this essay, first of all short history of photograph was mentioned, then area of use of photograph in the field of art and views on photograph-art relation will be mentioned.

  14. Global art history

    DEFF Research Database (Denmark)

    Petersen, Anne Ring

    2015-01-01

    “Southern” perspectives on unequal development are undeniably much needed. Yet, Southern perspectives on art and culture sometimes construct a homogenising image of the West. As a result, they are prone to uphold and perhaps even reinforce the dichotomy between “the North” and “the South” rather...... scholars based in this region with a productive entry point into the study of the globalised art forms of today. By consciously and self-critically positioning ourselves in the semi-periphery of the global art world, we may be able to develop a kind of inside–outside perspective similar to the “stereo...

  15. Facing Sound - Voicing Art

    DEFF Research Database (Denmark)

    Lønstrup, Ansa

    2013-01-01

    This article is based on examples of contemporary audiovisual art, with a special focus on the Tony Oursler exhibition Face to Face at Aarhus Art Museum ARoS in Denmark in March-July 2012. My investigation involves a combination of qualitative interviews with visitors, observations of the audienc......´s interactions with the exhibition and the artwork in the museum space and short analyses of individual works of art based on reception aesthetics and phenomenology and inspired by newer writings on sound, voice and listening....

  16. Robots and Art

    DEFF Research Database (Denmark)

    2015-01-01

    We describe the design of an undergraduate course in art and robotics that aims to integrate basic concepts of computer science, robotics and art installation for undergraduate students within the problem-based learning model. Our methodology aims to bridge the gap that separates humanities from...... computer science and engineering education to prepare students to address real world problems in robotics, including human-robotic interaction and HCI. Given the proliferation of interactive, systems-based art works and the continued interest in human-centered factors in robotics research (such...

  17. Arts Teachers' Perceptions and Attitudes on Arts Integration While Participating in a Statewide Arts Integration Initiative

    Science.gov (United States)

    May, Brittany Nixon; Robinson, Nicole R.

    2016-01-01

    The purpose of this study was to examine the perceptions and attitudes of the Beverley Taylor Sorenson Arts Learning Program (BTSALP) arts specialists on arts integration. BTSALP arts specialists (N = 50) throughout the state of Utah responded to a 20-item survey. Results indicated that a majority of BTSALP arts specialists believe that arts…

  18. Genetics Home Reference: Arts syndrome

    Science.gov (United States)

    ... Me Understand Genetics Home Health Conditions Arts syndrome Arts syndrome Enable Javascript to view the expand/collapse boxes. Download PDF Open All Close All Description Arts syndrome is a disorder that causes serious neurological ...

  19. Feasibility for Use of a Seabed Gallery Intake for the Shuqaiq-II SWRO Facility, Saudi Arabia

    KAUST Repository

    Mantilla, David

    2013-04-01

    Shuqaiq-II IWP is a combined RO water desalination and power plant facility. It operates with an open intake that feeds the plant with 100,000 m3/h of raw water. The facility is located 140 km north of Jizan, in a small bay where the run-off discharges of two wadis converge. The run-off coming from the wadis are rich in alluvial sediments that dramatically decrease the raw water quality at the intake point, causing periodic shutdowns of the plant and increasing the operational cost due to membrane replacement. Subsurface water intakes are an alternative for improving raw water quality, as they provide natural filtering of the feed water as it flows through the systems. In this type of system water flow through the sediment matrix is induced and during the percolation, several physical, chemical and biological processes take place, cleaning the water from particulate matter, resulting in high quality feed water that can be directly sent to the RO process without any additional pretreatment. A full hydrogeological profile of the seabed needs to be performed in order to determine the applicability of one of these systems in each particular location. In this study, 1 km of beach area at Shuqaiq-II IWP was surveyed. Ninety-one (91) samples from the shore and offshore sediments were collected and analyzed for hydraulic conductivity, porosity and grain size distribution. The laboratory analysis showed that the construction of the seabed galleries was technically feasible, and the proposed intake system was design to meet the feed water requirements for the RO facility (530.000 m3/d). The preliminary design consists of 17 cells in total, 16 of which will be in constant operation, and 1 alternate for whenever maintenance is needed in one of the other cells. The seabed gallery design includes 5 layers of sands with a total depth of 5 m. A detailed underdrain design methodology is presented. The system would be operated at an infiltration rate of 10 m/d and an average

  20. Optical Comb from a Whispering Gallery Mode Resonator for Spectroscopy and Astronomy Instruments Calibration

    Science.gov (United States)

    Strekalov, Dmitry V.; Yu, Nam; Thompson, Robert J.

    2012-01-01

    The most accurate astronomical data is available from space-based observations that are not impeded by the Earth's atmosphere. Such measurements may require spectral samples taken as long as decades apart, with the 1 cm/s velocity precision integrated over a broad wavelength range. This raises the requirements specifically for instruments used in astrophysics research missions -- their stringent wavelength resolution and accuracy must be maintained over years and possibly decades. Therefore, a stable and broadband optical calibration technique compatible with spaceflights becomes essential. The space-based spectroscopic instruments need to be calibrated in situ, which puts forth specific requirements to the calibration sources, mainly concerned with their mass, power consumption, and reliability. A high-precision, high-resolution reference wavelength comb source for astronomical and astrophysics spectroscopic observations has been developed that is deployable in space. The optical comb will be used for wavelength calibrations of spectrographs and will enable Doppler measurements to better than 10 cm/s precision, one hundred times better than the current state-of-the- art.

  1. Folkloristic Art Deco and Latvia

    OpenAIRE

    Čaupale, Renāte

    2013-01-01

    Analysing terminology existing in the art theory today and considering eclectic expressions in Art Deco aesthetics in the20-30s in connection with nationally ethnographic style elements or their stylisation, it is offered to use the term Folkloristic Art Deco. To show essential contention and esthetical difference between national romanticism and folkloristic Art Deco, the examples of Latvian architecture and art of the beginning of the 20th century are given. The term Folkloristic Art Deco a...

  2. Martial arts club

    CERN Multimedia

    Martial arts club

    2012-01-01

    In July 2012, after seven years of activity at CERN, the CERN Martial Arts held its first international Bujutsu seminar, gathering more than 30 participants from France, Switzerland, Germany, Sweden and Japan. The seminar was led by Master Shimazu Kenji, world-renowned martial arts expert based in Tokyo and headmaster of the Yagyu Shingan Ryu school, present in Europe specifically for the occasion. During seven days, participants got to discover the practice of Odachi (Large/Long Sword) and review the wide array of Bujutsu techniques and traditions of an ancestral martial art that finds its roots in the art and lives of Japanese samurais. Covering such varied subjects as self-defense techniques (Jujitsu), swordsmanship (Kenjutsu), through to stamina recovery techniques and etiquette, it encompasses all aspects of a way of life that still finds echoes in today's modern Japanese society. This year, three shodan grades (the lowest rank of black belts) have been awarded to students of the CERN Mart...

  3. Workshop: Teaching Primitive Arts.

    Science.gov (United States)

    Jordison, Jerry

    1999-01-01

    Discusses the concrete and spiritual aspects of teaching workshops on survival skills or primitive arts. Gives details on lostproofing, or ways to teach a child not to get lost in the outdoors; building a survival shelter; and wilderness cooking. (CDS)

  4. To betray art history

    Directory of Open Access Journals (Sweden)

    Jae Emerling

    2016-12-01

    Full Text Available The work of Donald Preziosi represents one of the most sustained and often brilliant attempts to betray the modern discipline of art history by exposing its skillful shell game: precisely how and why it substitutes artifice, poetry, and representational schemes for putative facticity and objectivity (that desirous and yet ever elusive Kunstwissenschaft that art historians prattle on about. This attempt is inseparable from a sinuous, witty, involutive writing style that meanders between steely insight and coy suggestions of how art history could be performed otherwise. Preziosi’s writes art history. In doing so he betrays its disciplinary desires. It is this event of betrayal that has made his work so exciting to some, so troubling to others.

  5. Varieties of Art Curriculum.

    Science.gov (United States)

    Feldman, Edmund Burke

    1982-01-01

    Describes the four main types of British art curricula. The content, objectives, and underlying principles are examined. Available from Carfax Publishing Company, P.O. Box 25, Abingdon, Oxfordshire OX14 1RW England. (AM)

  6. Art Criticism and Reading.

    Science.gov (United States)

    Feldman, Edmund Burke; Woods, Don

    1981-01-01

    The authors review a body of theory and accumulating evidence which suggests that critical study of the arts facilitates the development of cognitive skills, including those essential to reading. (Author/SJL)

  7. Frenchwomen Loving Art

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    I have been to many countries on business, and out of all of them, France impressed me most. With its rich soil for literature and art, France has nurtured not only the great writers Victor Hugo and Honore de

  8. On Translation of Chinese Folk Culture Based on Skopos Theory-A Case Study of Commentary of Folk Custom Gallery in Ningbo Museum

    Institute of Scientific and Technical Information of China (English)

    LI Tang

    2016-01-01

    Folk culture plays an indispensable role in the Chinese culture. Therefore, as cultural exchanges between countries be-come more and more frequent, promoting the folk culture has a profound effect on enhancement of cultural soft power. Further-more, this paper has explored translation of commentary of Folk Custom Gallery in Ningbo Museum and summarized six trans-lation methods based on Skopos theory.

  9. Pop-Art Panels

    Science.gov (United States)

    Alford, Joanna

    2012-01-01

    James Rosenquist's giant Pop-art panels included realistic renderings of well-known contemporary foods and objects, juxtaposed with famous people in the news--largely from the 1960s, '70s and '80s--and really serve as visual time capsules. In this article, eighth-graders focus on the style of James Rosenquist to create their own Pop-art panel that…

  10. Memories of art.

    Science.gov (United States)

    Hirstein, William

    2013-04-01

    Although the art-historical context of a work of art is important to our appreciation of it, it is our knowledge of that history that plays causal roles in producing the experience itself. This knowledge is in the form of memories, both semantic memories about the historical circumstances, but also episodic memories concerning our personal connections with an artwork. We also create representations of minds in order to understand the emotions that artworks express.

  11. The uses of art

    DEFF Research Database (Denmark)

    Eriksson, Birgit

    2011-01-01

    In recent years aesthetics and cosmopolitanism has been linked in new ways. On the one hand contemporary research in sociology of art appears to indicate an increasing openness and a potential cosmopolitanism in aesthetic taste and consumption. On the other hand aesthetic concepts and ideals play...... implications of the apparent new openness. Does it indicate an increasing tolerance and commonality? Or does it rather point towards a new and more individualized understanding of the social function and legitimacy of art?...

  12. The Experimental Art School

    DEFF Research Database (Denmark)

    Ørum, Tania

    2014-01-01

    The article describes the Experimental Art School from its early beginnings, its development from formal experiments to political action, the question of gender and politics, and the power of the self-organised......The article describes the Experimental Art School from its early beginnings, its development from formal experiments to political action, the question of gender and politics, and the power of the self-organised...

  13. Artes y posconflicto

    Directory of Open Access Journals (Sweden)

    PENSAMIENTO, PALABRA Y OBRA

    2014-12-01

    No bastará que las artes estén presentes en el nuevo escenario social. Tenemos que formular política y tenemos que formar  a  quienes  se  encargarán  de darle sentido a las artes en la escuela, en los espacios comunitarios, en los medios masivos, en fin, en la vida.

  14. Cerebro arte y creatividad

    OpenAIRE

    Brainsky, Simón; Guzmán Cervantes, Eugenia; Matallana, Diana; Montaña, Clemencia; Montañés, Patricia; Morales, Hernando de (S.I.); Moreno Cardozo, Belén del Rocío; Morillo, Anibal; Pardo, Rodrigo; Rojas, Alejandro; Ruiz, Edwin

    2001-01-01

    En el seminario Cerebro, Arte y Creatividad, realizado en mayo del 2000, en la Universidad Nacional, cuyas conferencias hemos integrado en este libro, hemos querido aproximamos a diversas manifestaciones del arte, diversas variedades de creatividad, desde la perspectiva de las funciones cerebrales y desde la perspectiva de los principios psicológicos que gobiernan la actividad creativa. Se explora cómo los hallazgos relativos al funcionamiento y especialización funcional de los hemisferi...

  15. Aboriginal Art: Who was interested?

    Directory of Open Access Journals (Sweden)

    Daniel Thomas

    2011-06-01

    Full Text Available This paper addresses the common assumption that Aboriginal art has been absent from Australian art histories and demonstrates how this is not so. It criticises the notion that art history should be represented by specialised art-history books and argues for the important of art museum displays as texts. It also examines the ways in which Aboriginal art has been examined in literature devoted to Australian history and anthropology. It foregrounds the idea that arts history is not necessarily best represented by official art historical texts.

  16. Non-destructive testing of works of art by stimulated infrared thermography

    Science.gov (United States)

    Candoré, J. C.; Bodnar, J. L.; Detalle, V.; Grossel, P.

    2012-02-01

    In this work, we present various examples of assistance to the restoration of works of art by stimulated infrared thermography. We show initially that the method allows the detection of delamination located in mural paintings, such as in the "Saint Christophe" of the Campana collection of the Louvre French museum. We show then that it also makes it possible to detect delaminations or galleries of worms in marquetries. We show in a third stage that it provides for the detection of detachment of grayness in stained glasses. We show in a fourth stage that it allows the visualization of shards or metal inserts located in a Greek "panathénaque" amphora of the French National museum of the Ceramics of Sevres. We show finally, that the method permits the detection of a crack located in an ovoid vase of the same French National museum of the Ceramics of Sevres.

  17. Lasing mode regulation and single-mode realization in ZnO whispering gallery microcavities by the Vernier effect.

    Science.gov (United States)

    Wang, Y Y; Xu, C X; Jiang, M M; Li, J T; Dai, J; Lu, J F; Li, P L

    2016-10-07

    The wide direct bandgap and strong exciton binding energy of ZnO have inspired examinations of ultraviolet lasing over the previous decades. However, regulation of the lasing mode, especially the realization of single mode lasing, is still a challenge. In this study, a ZnO comb-like structure with an array of microrods was selected to design coupled whispering-gallery-mode cavities, wherein the naturally varied air-gap between the adjacent microrods created a flexible condition for optical field coupling without any complicated micromanipulation. Spectral behaviour of lasing and coupling interaction between coupled ZnO microrods were systematically investigated. By regulating the nano-scale inter-space of dual coupled microrods, stable single-mode lasing with a higher Q factor and lower threshold was obtained successfully based on the Vernier effect. The formation conditions and the mechanism of single-mode lasing derived from the coupled ZnO microrods were discussed in detail. It also demonstrated an approach to construct high quality single-mode lasing by tuning the diameters of the coupled ZnO microrods.

  18. Whispering-gallery-mode based CH3NH3PbBr3 perovskite microrod lasers with high quality factors

    CERN Document Server

    Wang, Kaiyang; Zhang, Chen; Sun, Wenzhao; Gu, Zhiyuan; Xiao, Shumin; Song, Qinghai

    2016-01-01

    Lead halide perovskite based micro- and nano- lasers have been widely studied in past two years. Due to their long carrier diffusion length and high external quantum efficiency, lead halide perovskites have been considered to have bright future in optoelectronic devices, especially in the "green gap" wavelength region. However, the quality (Q) factors of perovskite lasers are unspectacular compared to conventional microdisk lasers. The record value of full width at half maximum (FWHM) at threshold is still around 0.22 nm. Herein we synthesized solution-processed, single-crystalline CH3NH3PbBr3 perovskite microrods and studied their lasing actions. In contrast to entirely pumping a microrod on substrate, we partially excited the microrods that were hanging in the air. Consequently, single-mode or few-mode laser emissions have been successfully obtained from the whispering-gallery like diamond modes, which are confined by total internal reflection within the transverse plane. Owning to the better light confinem...

  19. [Concordance among analysts from Latin-American laboratories for rice grain appearance determination using a gallery of digital images].

    Science.gov (United States)

    Avila, Manuel; Graterol, Eduardo; Alezones, Jesús; Criollo, Beisy; Castillo, Dámaso; Kuri, Victoria; Oviedo, Norman; Moquete, Cesar; Romero, Marbella; Hanley, Zaida; Taylor, Margie

    2012-06-01

    The appearance of rice grain is a key aspect in quality determination. Mainly, this analysis is performed by expert analysts through visual observation; however, due to the subjective nature of the analysis, the results may vary among analysts. In order to evaluate the concordance between analysts from Latin-American rice quality laboratories for rice grain appearance through digital images, an inter-laboratory test was performed with ten analysts and images of 90 grains captured with a high resolution scanner. Rice grains were classified in four categories including translucent, chalky, white belly, and damaged grain. Data was categorized using statistic parameters like mode and its frequency, the relative concordance, and the reproducibility parameter kappa. Additionally, a referential image gallery of typical grain for each category was constructed based on mode frequency. Results showed a Kappa value of 0.49, corresponding to a moderate reproducibility, attributable to subjectivity in the visual analysis of grain images. These results reveal the need for standardize the evaluation criteria among analysts to improve the confidence of the determination of rice grain appearance.

  20. Frequency tuning of single photons from a whispering-gallery mode resonator to MHz-wide transitions

    Science.gov (United States)

    Schunk, G.; Vogl, U.; Sedlmeir, F.; Strekalov, D. V.; Otterpohl, A.; Averchenko, V.; Schwefel, H. G. L.; Leuchs, G.; Marquardt, Ch.

    2016-11-01

    Quantum repeaters rely on interfacing flying qubits with quantum memories. The most common implementations include a narrowband single photon matched in bandwidth and central frequency to an atomic system. Previously, we demonstrated the compatibility of our versatile source of heralded single photons, which is based on parametric down-conversion in a triply resonant whispering-gallery mode resonator, with alkaline transitions [Schunk et al., Optica 2015, 2, 773]. In this paper, we analyse our source in terms of phase matching, available wavelength-tuning mechanisms and applications to narrowband atomic systems. We resonantly address the D1 transitions of caesium and rubidium with this optical parametric oscillator pumped above its oscillation threshold. Below threshold, the efficient coupling of single photons to atomic transitions heralded by single telecom-band photons is demonstrated. Finally, we present an accurate analytical description of our observations. Providing the demonstrated flexibility in connecting various atomic transitions with telecom wavelengths, we show a promising approach to realize an essential building block for quantum repeaters.