WorldWideScience

Sample records for sculpturing digit shape

  1. Digital Sculpture Installations

    Science.gov (United States)

    Sherwood, Catherine

    2006-01-01

    This author relates how she came upon the idea of using an image-editing program to virtually install monumental sculptures into real-life landscapes in her desire to bring technology and sculpture together in her art class. In this article, she describes how she made her class create tabletop-sized sculptures and photographs of digital…

  2. Shaping space: facial asymmetries in fifth-century Greek sculpture

    NARCIS (Netherlands)

    Hochscheid, H.; Hamel, R.; Wootton, W.; Russell, B.; Libonati, E.

    2015-01-01

    The phenomenon of optical correction in Classical Greek sculpture has been attested by both ancient authors and modern scholars. Despite the apparent normalcy of optical correction in sculpture, however, there are no obvious reasons for it and how such correction worked in statues is a question

  3. Three-Dimensional Interpretation of Sculptural Heritage with Digital and Tangible 3D Printed Replicas

    Science.gov (United States)

    Saorin, José Luis; Carbonell-Carrera, Carlos; Cantero, Jorge de la Torre; Meier, Cecile; Aleman, Drago Diaz

    2017-01-01

    Spatial interpretation features as a skill to acquire in the educational curricula. The visualization and interpretation of three-dimensional objects in tactile devices and the possibility of digital manufacturing with 3D printers, offers an opportunity to include replicas of sculptures in teaching and, thus, facilitate the 3D interpretation of…

  4. Digital pulse shape discrimination

    International Nuclear Information System (INIS)

    Miller, L. F.; Preston, J.; Pozzi, S.; Flaska, M.; Neal, J.

    2007-01-01

    Pulse-shape discrimination (PSD) has been utilised for about 40 years as a method to obtain estimates for dose in mixed neutron and photon fields. Digitizers that operate close to GHz are currently available at a reasonable cost, and they can be used to directly sample signals from photomultiplier tubes. This permits one to perform digital PSD rather than the traditional, and well-established, analogous techniques. One issue that complicates PSD for neutrons in mixed fields is that the light output characteristics of typical scintillators available for PSD, such as BC501A, vary as a function of energy deposited in the detector. This behaviour is more easily accommodated with digital processing of signals than with analogous signal processing. Results illustrate the effectiveness of digital PSD. (authors)

  5. Kinetic sculpture

    OpenAIRE

    Joneta Witabora; Jonata Witabora

    2014-01-01

    Kinetic Sculpture was born from a long process of searching new approach in sculpture. The artists tried to escape from 'static' paradigm and tried to implement movement into their works: a sculpture that is mobile. Movement is always a fascinating phenomenon to eyes. Kinetic sculpture strength lies in its unique character in combining science and art. Kinetic Sculptures are really interesting pieces of art. It succeeds to fascinate human everytime. 

  6. Relief Sculpture

    Science.gov (United States)

    Lawrence, Trudy

    2005-01-01

    Relief sculpture is an art form that is midway between painting and sculpture in the round. It is a process in which the subject stands out or projects a surface from the background. The surface has several levels. It can be low relief or high relief (deep or almost round) or anywhere in between. The most common example of low relief is a coin…

  7. Telling Stories through Sculpture.

    Science.gov (United States)

    Greenman, Geri

    2000-01-01

    Describes an art activity that incorporates storytelling with sculpture. Intermediate-level sculpture students create a sculpture that represents a family story, memory, or event. Describes the process and provides four examples, including stories and sculptures. (CMK)

  8. Symmetry and scale orient Min protein patterns in shaped bacterial sculptures

    Science.gov (United States)

    Wu, Fabai; van Schie, Bas G. C.; Keymer, Juan E.; Dekker, Cees

    2015-08-01

    The boundary of a cell defines the shape and scale of its subcellular organization. However, the effects of the cell's spatial boundaries as well as the geometry sensing and scale adaptation of intracellular molecular networks remain largely unexplored. Here, we show that living bacterial cells can be ‘sculpted’ into defined shapes, such as squares and rectangles, which are used to explore the spatial adaptation of Min proteins that oscillate pole-to-pole in rod-shaped Escherichia coli to assist cell division. In a wide geometric parameter space, ranging from 2 × 1 × 1 to 11 × 6 × 1 μm3, Min proteins exhibit versatile oscillation patterns, sustaining rotational, longitudinal, diagonal, stripe and even transversal modes. These patterns are found to directly capture the symmetry and scale of the cell boundary, and the Min concentration gradients scale with the cell size within a characteristic length range of 3-6 μm. Numerical simulations reveal that local microscopic Turing kinetics of Min proteins can yield global symmetry selection, gradient scaling and an adaptive range, when and only when facilitated by the three-dimensional confinement of the cell boundary. These findings cannot be explained by previous geometry-sensing models based on the longest distance, membrane area or curvature, and reveal that spatial boundaries can facilitate simple molecular interactions to result in far more versatile functions than previously understood.

  9. Prosthetically guided bone sculpturing for a maxillary complete-arch implant-supported monolithic zirconia fixed prosthesis based on a digital smile design: A clinical report.

    Science.gov (United States)

    Rojas-Vizcaya, Fernando

    2017-11-01

    A digital smile design was used to create an average smile and to develop a removable interim restoration for an edentulous patient with a high smile line and different bone levels in the maxilla. The interim restoration was used as a guide to perform bone sculpturing to create space for the biological width and to restore a monolithic zirconia implant-supported fixed restoration. Copyright © 2017 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.

  10. Digital Modeling and Shaping of Design Practices

    DEFF Research Database (Denmark)

    Reijonen, Satu

    This paper focuses on the role of digital modeling in shaping coordinative practices between architects and energy engineers in construction design. The paper presents a case study of the use of an energy performance calculation programme, a numeric digital modeling tool, that not only enables...... coordination between the two communities but also shapes coordinative practices around the emerging building. The paper draws on two interlinked strands of literature that have engaged in the role of material artefacts in the social: the entanglement of technology in organizing and management (Orlikowski 2000......, 2010), and the socio-material constructivist studies of technology (Akrich 1992, Akrich et al. 2000, Latour 1991). The programme influences the coordinative practices in following ways: it shapes the modus of interaction between energy engineers and architects and enforces particular jurisdictional...

  11. Self-Portrait Sculpture.

    Science.gov (United States)

    Gorberg, Sharon

    2002-01-01

    Describes a project where eighth-grade girls create self-portrait sculptures made out of papier-mache and other materials. Explains that the sculptures serve as an outlet for the students to express something about their own personal identities. Discusses in detail the process of creating the sculptures. (CMK)

  12. Design and Applications of In-Cavity Pulse Shaping by Spectral Sculpturing in Mode-Locked Fibre Lasers

    Directory of Open Access Journals (Sweden)

    Sonia Boscolo

    2015-11-01

    Full Text Available We review our recent progress on the realisation of pulse shaping in passively-mode-locked fibre lasers by inclusion of an amplitude and/or phase spectral filter into the laser cavity. We numerically show that depending on the amplitude transfer function of the in-cavity filter, various regimes of advanced waveform generation can be achieved, including ones featuring parabolic-, flat-top- and triangular-profiled pulses. An application of this approach using a flat-top spectral filter is shown to achieve the direct generation of high-quality sinc-shaped optical Nyquist pulses with a widely tunable bandwidth from the laser oscillator. We also present the operation of an ultrafast fibre laser in which conventional soliton, dispersion-managed soliton (stretched-pulse and dissipative soliton mode-locking regimes can be selectively and reliably targeted by adaptively changing the dispersion profile and bandwidth programmed on an in-cavity programmable filter. The results demonstrate the strong potential of an in-cavity spectral pulse shaper for achieving a high degree of control over the dynamics and output of mode-locked fibre lasers.

  13. Structures in sculptures

    DEFF Research Database (Denmark)

    Vanggaard, Ole

    the different concepts and find a final synthesis, but the problem is known. Large sculptures represent structural challenges. The design of the supports inside the structures reveals often a very different world from the outside view of the sculpture. The piece of art and its structure may have two very...... different lives. A sculpture of today may be very dissimilar from what we have seen earlier. The structure becomes sometimes a visual part of the art. Ultimately, there may not be any distinction between structure and art. The technical demand, the durability and the safety are just as important for a large...... sculpture as in all other structures. The problem presented by the artist involves sometimes quite new structural themes. The dialog between the engineer and the artist brings the engineer close into the creative work of the artist. Neither the artist nor the engineer can rely upon any tradition...

  14. Descriptor Based Analysis of Digital 3D Shapes

    DEFF Research Database (Denmark)

    Welnicka, Katarzyna

    Analysis and processing of 3D digital shapes is a significant research area with numerous medical, industrial, and entertainment applications which has gained enormously in importance as optical scanning modalities have started to make acquired 3D geometry commonplace. The area holds many...... challenges. One such challenge, which is addressed in this thesis, is to develop computational methods for classifying shapes which are in agreement with the human way of understanding and classifying shapes. In this dissertation we first present a shape descriptor based on the process of diffusion...

  15. Mismatch-Shaping Serial Digital-to-Analog Converter

    DEFF Research Database (Denmark)

    Steensgaard-Madsen, Jesper; Moon, Un-Ku; Temes, Gabor C.

    1999-01-01

    A simple but accurate pseudo-passive mismatch-shaping D/A converter is described. A digital state machine is used to control the switching sequence of a symmetric two-capacitor network that performs the D/A conversion. The error caused by capacitor mismatch is uncorrelated with the input signal...

  16. Digitizing the Seminar Paper. A graduate student perspective on how digital tools shape scholarship

    Directory of Open Access Journals (Sweden)

    Brian Sarnacki

    2012-06-01

    Full Text Available In the early twentieth century, Grand Rapids, Michigan addressed a major political scandal, which was the tipping point of municipal politics in Grand Rapids between politics rooted in personal connections and those centered on business-like administration. However, reform moved slowly, hindered by the social and spatial relationships of the élite. Using digital tools in a digital history seminar shaped my analysis of these personal and spatial relations. As a vital step in my research process, the construction of a digital project not only informed my written argument, but also fundamentally shaped it. It also reveals the importance of small scale digital research projects, made accessible through the use of open access tools, in the ultimate widespread adoption of the digital humanities.

  17. Sculpture Sketches in Bloom

    Science.gov (United States)

    DiJulio, Betsy

    2009-01-01

    The best artistic challenges open students' eyes, hearts, and minds by combining both formal and conceptual concerns. In this article, the author describes a project inspired by a temporary exhibition of African Shona sculpture entitled "Mutambo! (Celebrate!)" at the Norfolk Botanical Gardens in Norfolk, Virginia. (Contains 2 online…

  18. Wood Sculpture Characters

    Science.gov (United States)

    Hubbert, Beth

    2006-01-01

    Whenever possible, the author tries to incorporate the work of artists who are included in the collection of nearby museums. The school is close to the Dallas area and visiting the Dallas Museum of Arts (DMA) is in the realm possibility. The DMA has a sculpture in their collection by artist David Bates called "Seated Man #4." The fact…

  19. 3D Reconstruction and Restoration Monitoring of Sculptural Artworks by a Multi-Sensor Framework

    Directory of Open Access Journals (Sweden)

    Sandro Barone

    2012-12-01

    Full Text Available Nowadays, optical sensors are used to digitize sculptural artworks by exploiting various contactless technologies. Cultural Heritage applications may concern 3D reconstructions of sculptural shapes distinguished by small details distributed over large surfaces. These applications require robust multi-view procedures based on aligning several high resolution 3D measurements. In this paper, the integration of a 3D structured light scanner and a stereo photogrammetric sensor is proposed with the aim of reliably reconstructing large free form artworks. The structured light scanner provides high resolution range maps captured from different views. The stereo photogrammetric sensor measures the spatial location of each view by tracking a marker frame integral to the optical scanner. This procedure allows the computation of the rotation-translation matrix to transpose the range maps from local view coordinate systems to a unique global reference system defined by the stereo photogrammetric sensor. The artwork reconstructions can be further augmented by referring metadata related to restoration processes. In this paper, a methodology has been developed to map metadata to 3D models by capturing spatial references using a passive stereo-photogrammetric sensor. The multi-sensor framework has been experienced through the 3D reconstruction of a Statue of Hope located at the English Cemetery in Florence. This sculptural artwork has been a severe test due to the non-cooperative environment and the complex shape features distributed over a large surface.

  20. Digital pulse shape discrimination of detector data using fuzzy clustering

    International Nuclear Information System (INIS)

    Kumar, Abhinav; Chatterjee, A.; Ramachandran, K.; Shrivastava, A.; Mahata, K.

    2011-01-01

    In accelerator based experiments, data acquisition is done by CAMAC, VME and other systems. The current trend is to digitize the pulse shapes and not just the peak heights of all the input channels, by means of Flash ADCs. In view of the large number of channels involved, this leads to unprecedented data volumes. Therefore, attempts to perform a first level of analysis in real time using algorithms implemented in FPGA have become important. In the present work, digital pulse shape discrimination using fuzzy clustering has been investigated. The attempt has been to devise general purpose PSD Techniques, loosely coupled with the characteristics of detector or particle type, for particle identification. The method is applicable to neutron-gamma discrimination for liquid scintillators and charged particles detected by Si detectors

  1. Comparison of analog and digital pulse-shape-discrimination systems

    Energy Technology Data Exchange (ETDEWEB)

    Sosa, C.S., E-mail: cssosa@umich.edu; Flaska, M.; Pozzi, S.A.

    2016-08-01

    Pulse shape discrimination (PSD) performance of two optimized PSD systems (one digital and one analog) is compared in this work. One system uses digital charge integration, while the other system uses analog zero crossing. Measurements were conducted with each PSD system using the CAEN V1720 (250 MHz) data acquisition system. An organic-liquid scintillator, coupled to a photo-multiplier tube, was used to detect neutrons and gamma rays from a Cf-252 spontaneous-fission source. The PSD performance of both systems was optimized and quantified using a traditional figure-of-merit (FOM) approach. FOM's were found for three, 300 keVee light-output bins, spanning from 100 to 1000 keVee, and one larger bin from 100 to 1800 keVee. Digital PSD outperformed analog PSD in the lowest light-output bin by approximately 50%, and by 11% for the highest light-output bin.

  2. Sculpture Versus Architecture?

    Directory of Open Access Journals (Sweden)

    Alexander Rappaport

    2007-07-01

    Full Text Available Many critics consider Richard Serra the leading sculptor of the 20th century. He is famous not only for inventing something new in sculpture (abstract sculpture compositions existed before him, having been opened by constructivist vanguard of the beginning of the 20th century. Material selections by Vladimir Tatlin and sculptures by Osip Tsadkin, as well as compositions by Henry Moor appeared before Serra. Serra is famous for transferring his works' accent from the works as they are, which could be installed in any place, to their environment. That is he saw in the sculpture a key to understanding the urban space. His crude metal sheets and profiles, rectangular and curvilinear, exceeding regular scale of sculpture, come closer to architecture. Richard Serra places them near architectural constructions as checkpoints of intermediate scale category of space located between so-called «street furniture» – lamp posts, stalls, fountains and benches – and buildings, especially huge modern ones.But the matter is not only in the scale. Serra's sculptures are not only abstract compositions that harmoniously add to the space with their spacious scale. They have some mystery, some implicit sense appearing before a pedestrian as an enigma. Their mystique opposes both street furniture and architecture. But first of all it opposes the historical sculpture with its enigma always overshadowed by historical or biographical topic. Krylov's sculpture in the Summer Garden or Minin and Pozharsky's monument on the Red Square do not strike us, because we know that those monuments are erected IN COMMEMORATION of prominent people, as fellow citizens' tribute to their great contribution to the national history. But the crude metal sheets welded at different angles – what are they for? Who needs them?As an art critic, Edward Goldman, said, fame came to Richard Serra in 1989, when the sculpture composition Tilted Arc erected eight years before it was demolished by

  3. Chihuly-Inspired Balloon Sculptures

    Science.gov (United States)

    Morice, Erin

    2009-01-01

    When the glass artist Dale Chihuly exhibited his work at the Missouri Botanical Garden, the author took a class of fourth-grade students to view the artist's extraordinary sculptures. Just as the author predicted, the students were in awe of Chihuly's organic three-dimensional sculptures. Before taking the field trip to the Missouri Botanical…

  4. Sculpturing Surfaces with Cartan Ribbons

    DEFF Research Database (Denmark)

    Raffaelli, Matteo; Bohr, Jakob; Markvorsen, Steen

    2016-01-01

    Using the concepts of Cartan development and rolling from differential geometry we develop a method for sculpturing any surface with the use of Cartan ribbons.......Using the concepts of Cartan development and rolling from differential geometry we develop a method for sculpturing any surface with the use of Cartan ribbons....

  5. Multi-shape active composites by 3D printing of digital shape memory polymers.

    Science.gov (United States)

    Wu, Jiangtao; Yuan, Chao; Ding, Zhen; Isakov, Michael; Mao, Yiqi; Wang, Tiejun; Dunn, Martin L; Qi, H Jerry

    2016-04-13

    Recent research using 3D printing to create active structures has added an exciting new dimension to 3D printing technology. After being printed, these active, often composite, materials can change their shape over time; this has been termed as 4D printing. In this paper, we demonstrate the design and manufacture of active composites that can take multiple shapes, depending on the environmental temperature. This is achieved by 3D printing layered composite structures with multiple families of shape memory polymer (SMP) fibers - digital SMPs - with different glass transition temperatures (Tg) to control the transformation of the structure. After a simple single-step thermomechanical programming process, the fiber families can be sequentially activated to bend when the temperature is increased. By tuning the volume fraction of the fibers, bending deformation can be controlled. We develop a theoretical model to predict the deformation behavior for better understanding the phenomena and aiding the design. We also design and print several flat 2D structures that can be programmed to fold and open themselves when subjected to heat. With the advantages of an easy fabrication process and the controllable multi-shape memory effect, the printed SMP composites have a great potential in 4D printing applications.

  6. Noise Shaping Filter Compensating PWM Distortion for Fully Digital Amplifier

    Science.gov (United States)

    Yoneya, Akihiko

    The full-digital audio amplifiers have several merits such as a high power enabling a small size of the amplifier and digital implementation of the signal processing which allows desired precision of the processing except for the final stage switching amplifiers. Unfortunately, the pulse width modulation (PWM) causes signal distortions because of the non-linearity of the modulation from the viewpoint of the transient response. This paper proposes a compensation method of the PWM distortion with feedback approach. In the noise-shaping filter of the delta-sigma modulator to calculate the pulse codes for the PWM, the distortion caused by the PWM is evaluated and fed it back to compensate the distortion. Eventually the filter is implemented as a state-variable filter with non-linear feedback from the quantizer. The calculation of the filter elements is also described. By using proposed filters, PWM signals with small distortions and small floor noise can be obtained to realize high-fidelity audio amplifiers.

  7. Machining of Complex Sculptured Surfaces

    CERN Document Server

    2012-01-01

    The machining of complex sculptured surfaces is a global technological topic in modern manufacturing with relevance in both industrialized and emerging in countries particularly within the moulds and dies sector whose applications include highly technological industries such as the automotive and aircraft industry. Machining of Complex Sculptured Surfaces considers new approaches to the manufacture of moulds and dies within these industries. The traditional technology employed in the manufacture of moulds and dies combined conventional milling and electro-discharge machining (EDM) but this has been replaced with  high-speed milling (HSM) which has been applied in roughing, semi-finishing and finishing of moulds and dies with great success. Machining of Complex Sculptured Surfaces provides recent information on machining of complex sculptured surfaces including modern CAM systems and process planning for three and five axis machining as well as explanations of the advantages of HSM over traditional methods ra...

  8. A strategy for field shape evaluation in digital portal imaging

    International Nuclear Information System (INIS)

    Vos, P.H.; Quist, M.; Weistra, J.; Vossepoel, A.M.

    1995-01-01

    Digital portal imagers allow accurate measurement of the field shape in radiotherapy. A strategy is introduced to determine origin and magnitude of discrepancies between the prescribed and measured field outline. After measurement of the actual detector position relative to the beam a conversion is made from pixels in the image matrix to mm in the plane of the isocenter, without using information from the imaged field. Using a distance transform a quick check is performed: the outline is accepted if all outline points deviate less then a predefined minimum (usually 5 mm). Subsequent evaluation starts if somewhere in the outline this minimum is exceeded. The collimator defined parts in the field outline are discriminated from the shielding blocks using an enclosing rectangle of the portal outline. This rectangle is found by minimization of the area as a function of rotation. If more than one solution is available, minimization of the entropy of the field outline projections determines which rectangle corresponds best to the field outline. A check for the validity of the determined collimator parts is performed with a separate linear fit through these parts. An outline part is accepted as a collimator outline part if it is longer than a predefined length. Using this procedure the position for each of the collimator jaws can be individually measured and compared with its prescription, thus allowing discrimination between symmetric and asymmetric collimator set-ups. Using the distance transform again, for each of the detected (secondary) shielding blocks the largest discrepancy or the area giving underdosage or overdosage can be computed to evaluate their shape and position. Parameter(s) and criteria that should be used to evaluate the field set-up are specified in clinical protocols. For standard shielding blocks usually only a maximum tolerated difference is specified, whereas for mantle fields also maximum allowed over- and underdose areas are specified. The

  9. From “The New Sculpture” to Garden Statuary: the suppression of Abstract Expressionist sculpture

    Directory of Open Access Journals (Sweden)

    Meghan Bissonnette

    2015-12-01

    Full Text Available In the 1940s, David Smith, David Hare, Herbert Ferber, Ibram Lassaw, Seymour Lipton and Theodore Roszak were part of a new generation of sculptors working in New York who used welding and other direct-metal techniques to make abstract sculpture. In the 1950s, Abstract Expressionist sculpture was praised for its vitality and inventiveness, yet beginning in the 1960s these works gradually fell out of favour. The sole exception is David Smith, who has been upheld as the only sculptor of merit from this period. This study will contend that the suppression of Abstract Expressionist sculpture is largely due to Clement Greenberg and the lasting impact of his writings. Furthermore, his critique of the new sculpture has shaped subsequent assessments by Michael Leja, Kirk Varnedoe, and Edward Lucie-Smith. It has also contributed to the belief, still current today, that Abstract Expressionism is a movement of painters with no comparable counterparts in sculpture.

  10. African Traditional Sculpture and Aesthetic Realism | Mangiri ...

    African Journals Online (AJOL)

    Traditional African sculpture which is one of the essences of modern art movements in the world of art has not been attributed with that aesthetic identity. However, a close look at the traditional African sculpture reveals the artistic and aesthetic qualities. African traditional sculpture was regarded as mere objects or crafts.

  11. The Sculpture, man and word

    OpenAIRE

    Madjar, Neda

    2016-01-01

    In the diploma work entitled The Sculpture, Man and Word I explore the practices of the modern and the contemporary art. The theoretical part begins with sculpture, wire and iron as materials and with the artists that have been active within this particular field. These artists are Picasso, Gonzalez and Calder in the 1920s and 1930s, and David Smith at the turn of the century. I continue by taking a look at the following practices: readymade, fluxus, performance and conceptual art. These a...

  12. Analysis of pulse-shape discrimination techniques for BC501A using GHz digital signal processing

    International Nuclear Information System (INIS)

    Rooney, B.D.; Dinwiddie, D.R.; Nelson, M.A.; Rawool-Sullivan, Mohini W.

    2001-01-01

    A comparison study of pulse-shape analysis techniques was conducted for a BC501A scintillator using digital signal processing (DSP). In this study, output signals from a preamplifier were input directly into a 1 GHz analog-to-digital converter. The digitized data obtained with this method was post-processed for both pulse-height and pulse-shape information. Several different analysis techniques were evaluated for neutron and gamma-ray pulse-shape discrimination. It was surprising that one of the simplest and fastest techniques resulted in some of the best pulse-shape discrimination results. This technique, referred to here as the Integral Ratio technique, was able to effectively process several thousand detector pulses per second. This paper presents the results and findings of this study for various pulse-shape analysis techniques with digitized detector signals.

  13. Study of time-domain digital pulse shaping algorithms for nuclear signals

    International Nuclear Information System (INIS)

    Zhou Jianbin; Tuo Xianguo; Zhu Xing; Liu Yi; Zhou Wei; Lei Jiarong

    2012-01-01

    With the development on high-speed integrated circuit, fast high resolution sampling ADC and digital signal processors are replacing analog shaping amplifier circuit. This paper firstly presents the numerical analysis and simulation on R-C shaping circuit model and C-R shaping circuit model. Mathematic models are established based on 1 st order digital differential method and Kirchhoff Current Law in time domain, and a simulation and error evaluation experiment on an ideal digital signal are carried out with Excel VBA. A digital shaping test for a semiconductor X-ray detector in real time is also presented. Then a numerical analysis for Sallen-Key(S-K) low-pass filter circuit model is implemented based on the analysis of digital R-C and digital C-R shaping methods. By applying the 2 nd order non-homogeneous differential equation,the authors implement a digital Gaussian filter model for a standard exponential-decaying signal and a nuclear pulse signal. Finally, computer simulations and experimental tests are carried out and the results show the possibility of the digital pulse processing algorithms. (authors)

  14. Eurasia International Sculpture Biennale, Kazakhstan

    OpenAIRE

    Heywood, Anthony

    2017-01-01

    The first Eurasia International Sculpture Biennale was held from 4 July to 4 August 2017 in the atrium of the Palace of Peace and Reconciliation as one of the most important events of the cultural program EXPO-2017, commissioned by the Ministry of Culture and Sports of the Republic of Kazakhstan.

  15. Formulate, Formalize and Run! How Narrative Theories shape and are shaped by Interactive Digital Narrative

    OpenAIRE

    Szilas, Nicolas

    2016-01-01

    What are the links between narrative theories and computing? Narrative works are countless in the digital world: narrative hypertext and hypermedia, interactive fiction, video games, blogs, location-based narrative, etc. They not only form new analytical objects for narrative theories, but also may extend existing narrative theories. One specific type of digital narratives, AI-based Interactive Digital Narrative (IDN), plays a special role in this landscape because it makes use of narrative t...

  16. Three-Dimensional Utah: 100 Years of Sculpture

    OpenAIRE

    Nora Eccles Harrison Museum of Art

    1996-01-01

    Three-Dimensional Utah: 100 Years of Sculpture began as a series of conversations about sculptors and sculpture nearly six years ago. Specific development of the exhibition began three years ago during the process of creating a national inventory of outdoor sculpture for a program called Save Outdoor Sculpture (SOS)! Utah is home to more than 200 pieces of outdoor sculpture.

  17. The Iberian sculpture from Fabara (Zaragoza

    Directory of Open Access Journals (Sweden)

    Ignacio Simón Cornago

    2017-12-01

    Full Text Available The aim of this paper is to study again the Iberian sculpture from Fabara, because it was catalogued as a lion, while in fact it seems to be a horse. It’s one of few stone sculptures that have been documented in the northern part of the Iberian areas in the Peninsula, because the vast majority of Iberian stone sculptures are found in the South.

  18. A fully integrated 16 channel digitally trimmed pulse shaping amplifier

    Energy Technology Data Exchange (ETDEWEB)

    Hearn, W.E.; Wright, M.E.

    1993-11-01

    A fully integrated CMOS pulse shaping amplifier has been developed at LBL. All frequency dependent networks are included on the chip. Provision is made for tuning to compensate for process variations. The overall architecture and details of the circuitry are discussed. Test results are presented.

  19. A fully integrated 16 channel digitally trimmed pulse shaping amplifier

    International Nuclear Information System (INIS)

    Hearn, W.E.; Wright, M.E.

    1993-11-01

    A fully integrated CMOS pulse shaping amplifier has been developed at LBL. All frequency dependent networks are included on the chip. Provision is made for tuning to compensate for process variations. The overall architecture and details of the circuitry are discussed. Test results are presented

  20. A pulse-shape discrimination method for improving Gamma-ray spectrometry based on a new digital shaping filter

    Science.gov (United States)

    Qin, Zhang-jian; Chen, Chuan; Luo, Jun-song; Xie, Xing-hong; Ge, Liang-quan; Wu, Qi-fan

    2018-04-01

    It is a usual practice for improving spectrum quality by the mean of designing a good shaping filter to improve signal-noise ratio in development of nuclear spectroscopy. Another method is proposed in the paper based on discriminating pulse-shape and discarding the bad pulse whose shape is distorted as a result of abnormal noise, unusual ballistic deficit or bad pulse pile-up. An Exponentially Decaying Pulse (EDP) generated in nuclear particle detectors can be transformed into a Mexican Hat Wavelet Pulse (MHWP) and the derivation process of the transform is given. After the transform is performed, the baseline drift is removed in the new MHWP. Moreover, the MHWP-shape can be discriminated with the three parameters: the time difference between the two minima of the MHWP, and the two ratios which are from the amplitude of the two minima respectively divided by the amplitude of the maximum in the MHWP. A new type of nuclear spectroscopy was implemented based on the new digital shaping filter and the Gamma-ray spectra were acquired with a variety of pulse-shape discrimination levels. It had manifested that the energy resolution and the peak-Compton ratio were both improved after the pulse-shape discrimination method was used.

  1. Digital generation of stochastic signals of arbitrary spectral shape

    International Nuclear Information System (INIS)

    Behringer, K.; Nishihara, H.; Spiekerman, G.

    1986-10-01

    For computer-simulation experiments in the development of noise monitoring systems three methods of generating ergodic Gaussian random noise with specified spectral properties have been investigated: digital filtering of white noise optimum symmetric FIR filters, a modified Rice formulation and an approximation of the Kac representation of noise. The proposed modified Rice formulation is a new noise generation method which is most efficient with regard to the computation time. By windowing subsequent Rice sequences a smooth noise record of any desired length can be produced. (author)

  2. Interactive generation of digital anthropomorphic phantoms from XCAT shape priors

    Science.gov (United States)

    Lindsay, C.; Gennert, M. A.; Connolly, C. M.; Konik, A.; Dasari, P. K.; Segars, W. P.; King, M. A.

    2012-03-01

    In SPECT imaging, patient respiratory and body motion can cause artifacts that degrade image quality. Developing and evaluating motion correction algorithms are facilitated by simulation studies where a numerical phantom and its motion are precisely known, from which image data can be produced. Previous techniques to test motion correction methods generated XCAT phantoms modeled from MRI studies and motion tracking but required manually segmenting the major structures within the whole upper torso, which can take 8 hours to perform. Additionally, segmentation in two dimensional MRI slices and interpolating into three dimensional shapes can lead to appreciable interpolation artifacts as well as requiring expert knowledge of human anatomy in order to identify the regions to be segmented within each slice. We propose a new method that mitigates the long manual segmentation times for segmenting the upper torso. Our interactive method requires that a user provide only an approximate alignment of the base anatomical shapes from the XCAT model with an MRI data. Organ boundaries from aligned XCAT models are warped with displacement fields generated from registering a baseline MR image to MR images acquired during pre-determined motions, which amounts to automated segmentation each organ of interest. With our method we can show the quality of segmentation is equal that of expert manual segmentation does not require a user who is an expert in anatomy, and can be completed in minutes not hours. In some instances, due to interpolation artifacts, our method can generate higher quality models than manual segmentation.

  3. Analysis of Shape Nonconformity between Embroidered Element and Its Digital Image

    Directory of Open Access Journals (Sweden)

    Svetlana RADAVIČIENĖ

    2014-04-01

    Full Text Available Embroidery technologies are widely applied for developing decorative elements of original design in garments, for integrating threads intended for protection into garments and other articles. Nonconformity of the shape and dimensions of the embroidered element with the designed digital image is influenced by properties of embroidery threads and fibres, by the filling type, density of stitches and other technological parameters. The objective of the paper is to explore the influence made by properties of fabrics and by the direction of stitches of the actual embroidered element on conformity of the shape with one of the designed digital image. For the research, embroidery threads of different purpose as well as three woven fabrics have been selected. For preparation of test samples, round digital images have been designed filling the embroidery area in different stitch directions. Analysis of the results of the investigations has demonstrated that the shape and dimensions of the embroidered element failed to conform to the shape and dimensions of the designed digital image in most cases. In certain cases, e.g. when the stitch direction goes towards the middle of the embroidered element, a defect, i. e. hole, is observed due to considerable concentration of stitches in the centre of the element.DOI: http://dx.doi.org/10.5755/j01.ms.20.1.2911

  4. Surface shape measurement by multi-illumination lensless Fourier transform digital holographic interferometry

    Science.gov (United States)

    Dong, Jun; Jia, Shuhai; Jiang, Chao

    2017-11-01

    This paper presents a multi-illumination lensless Fourier transform digital holographic interferometry method for surface shape measurement. In this method, the interference phases with different effective synthetic wavelengths are obtained by tilting the illumination angle several times, and all are wrapped. A Fourier-transform demodulation algorithm employing all these wrapped phases simultaneously is used to determine the object surface shape. No phase unwrapping procedure is required, and the shape information of each point is calculated independently, thereby offering great flexibility for measuring objects with discontinuities surface, such as holes, steps and gaps. Experimental results demonstrate the validity of the principle.

  5. Determination of poles and zeroes using SAVOSIM for digital impulse-shaping

    International Nuclear Information System (INIS)

    Mohamad Idris Taib; Abu Bakar Ghazali; Salina Abdul Samad; Azah Mohamed

    2002-01-01

    Digital impulse pulse-shaping can be used to correct the pile-up for pulse-height (Energy) analyzer because of its fast processing speed. In this initial work on digital impulse pulse-shaping, a study is made on the input signals obtained from combination of preamplifier and prefilter of nuclear instrumentation with specific and general transfer function. Three types of pulses that are commonly produced by a nuclear detection preamplifier and prefilter are used for this application. For the determination of zeros and poles in z-transform, the summation of absolute value of output signal is minimum (SAVOSIM) method is used. Simulations for this type of signal are carried out using the MATLAB software and the TMS320C6701 evaluation module and the results are presented in this paper. Initial results show that the method can be expanded to design and develop for a nuclear spectroscopy based on digital signal processor. (Author)

  6. Roman period portrait habit in the funerary sculpture of northern Jordan: Local and foreign influences and their implications

    DEFF Research Database (Denmark)

    Lichtenberger, Achim; Raja, Rubina

    Funerary portraiture in the Near East has become a topic of discussion in the last years’ of scholarship once again. However, the funerary sculpture of Northern Jordan has received little attention in this connection. There are several reasons for that. For one the sculpture, often in the shape...... of funerary busts, are not of what we perceive as a high quality and secondly it has not been collected in a corpus and thirdly a strict typology and chronology of the sculpture does not exist. Nonetheless this portraiture, which it was, no matter the quality, deserves attention as a group of its own...

  7. Noise-shaping all-digital phase-locked loops modeling, simulation, analysis and design

    CERN Document Server

    Brandonisio, Francesco

    2014-01-01

    This book presents a novel approach to the analysis and design of all-digital phase-locked loops (ADPLLs), technology widely used in wireless communication devices. The authors provide an overview of ADPLL architectures, time-to-digital converters (TDCs) and noise shaping. Realistic examples illustrate how to analyze and simulate phase noise in the presence of sigma-delta modulation and time-to-digital conversion. Readers will gain a deep understanding of ADPLLs and the central role played by noise-shaping. A range of ADPLL and TDC architectures are presented in unified manner. Analytical and simulation tools are discussed in detail. Matlab code is included that can be reused to design, simulate and analyze the ADPLL architectures that are presented in the book.   • Discusses in detail a wide range of all-digital phase-locked loops architectures; • Presents a unified framework in which to model time-to-digital converters for ADPLLs; • Explains a procedure to predict and simulate phase noise in oscil...

  8. Walter Pater and the Language of Sculpture

    DEFF Research Database (Denmark)

    Østermark-Johansen, Lene

    Walter Pater and the Language of Sculpture is the first monograph to discuss the Victorian critic Walter Pater's attitude to sculpture. It brings together Pater's aesthetic theories with his theories on language and writing, to demonstrate how his ideas of the visual and written language...... are closely linked. Going beyond Pater's views on sculpture as an art form, this study traces the notion of relief (rilievo) and hybrid form in Pater, and his view of the writer as sculptor, a carver in language. Alongside her treatment of rilievo as a pervasive trope, Lene Østermark-Johansen also employs...... the idea of rivalry (paragone) more broadly, examining Pater's concern with positioning himself as an art critic in the late Victorian art world. Situating Pater within centuries of European aesthetic theories as never before done, Walter Pater and the Language of Sculpture throws new light...

  9. Ceramics And Sculpture Interface With Architecture.

    OpenAIRE

    Peters Edem E.; Henry Asante

    2015-01-01

    This work is an inter-disciplinary discourse that examines the role that their collective efforts it properly harassed can play in the development of modern architecture to meet the quest for safe and comfortable homes. The paper aims at assessing how much presence there are sculpture and ceramics in architecture. Sculpture and ceramics are disciplines in fine art and industrial art respectively. The paper identifies the specific contributions each discipline gives to the making of modern arc...

  10. An online detection system for aggregate sizes and shapes based on digital image processing

    Science.gov (United States)

    Yang, Jianhong; Chen, Sijia

    2017-02-01

    Traditional aggregate size measuring methods are time-consuming, taxing, and do not deliver online measurements. A new online detection system for determining aggregate size and shape based on a digital camera with a charge-coupled device, and subsequent digital image processing, have been developed to overcome these problems. The system captures images of aggregates while falling and flat lying. Using these data, the particle size and shape distribution can be obtained in real time. Here, we calibrate this method using standard globules. Our experiments show that the maximum particle size distribution error was only 3 wt%, while the maximum particle shape distribution error was only 2 wt% for data derived from falling aggregates, having good dispersion. In contrast, the data for flat-lying aggregates had a maximum particle size distribution error of 12 wt%, and a maximum particle shape distribution error of 10 wt%; their accuracy was clearly lower than for falling aggregates. However, they performed well for single-graded aggregates, and did not require a dispersion device. Our system is low-cost and easy to install. It can successfully achieve online detection of aggregate size and shape with good reliability, and it has great potential for aggregate quality assurance.

  11. Characterization of liquid scintillation detector (BC-501A) and digital pulse shape discrimination (DPSD) system

    Energy Technology Data Exchange (ETDEWEB)

    Lombigit, L., E-mail: lojius@nm.gov.my; Yussup, N., E-mail: nolida@nm.gov.my; Ibrahim, Maslina Mohd; Rahman, Nur Aira Abd; Rawi, M. Z. M. [Instrumentation Group, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor (Malaysia)

    2015-04-29

    A digital n/γ pulse shape discrimination (PSD) system is currently under development at Instrumentation and Automation Centre, Malaysian Nuclear Agency. This system aims at simultaneous detection of fast neutron and gamma ray in mixed radiations environment. This work reports the system characterization performed on the liquid scintillation detector (BC-501A) and digital pulse shape discrimination (DPSD) system. The characterization involves measurement of electron light output from the BC-501A detector and energy channels calibration of the pulse height spectra acquired with DPSD system using set of photon reference sources. The main goal of this experiment is to calibrate the ADC channel of our DPSD system, characterized the BC-501 detector and find the position of Compton edge which later could be used as threshold for the n/γ PSD experiment. The detector resolution however is worse as compared to other published data but it is expected as our detector has a smaller active volume.

  12. Tests on a digital neutron-gamma pulse shape discriminator with NE213

    International Nuclear Information System (INIS)

    Bell, Z.W.

    1981-01-01

    A technique using charge sensitive analog-to-digital converters to do neutron-gamma pulse shape discrimination is reported. The converters are gated by short (135 ns) pulses so as to reduce pile-up and the timing is such that the slow and total light output from the scintillator are measured. Preliminary tests indicate that the system performs reasonably well but poorer than some reported analog systems employing gated integrators or cross-over techniques. (orig.)

  13. Real-time 3D shape recording by DLP-based all-digital surface encoding

    Science.gov (United States)

    Höfling, Roland; Aswendt, Petra

    2009-02-01

    The use of computer generated sinusoidal fringe patterns has found wide acceptance in optical metrology. There are corresponding software solutions that reconstruct the phase field encoded in the fringe pattern in order to get 3D-shape data via triangulation and deflection measuring setups, respectively. Short recording time is a common issue of high importance for all tasks on the factory shop floor as well as in medical applications and for security. Recent high-speed implementations take advantage of MEMS based spatial light modulators and the digital micro mirror chipset DLP DiscoveryTM* is the fastest proven component currently available for this aim. Being a bi-stable on-off-state system, the sinusoidal gray level pictures are generated by controlling the mirrors ON-time period during which an analogue detector is exposed. This digital generation of light intensity distributions provides outstanding precision and long-term stability. It is used in leading edge technology solutions that produce video type streams of 3D surface data with a sustained repetition rate of 40 Hz. A new proposal is discussed in this paper that goes beyond this state of the art by considering the optical encoding of the surface as an all-digital communication link. After a brief classification of state-of- the-art systems, the authors describe how future all-digital encoding leads to extremely high speed and precision in 3D shape acquisition.

  14. Structural aspects of Imbrium sculpture, part G

    Science.gov (United States)

    Scott, D. H.

    1972-01-01

    Apollo 16 metric photographs taken at low to high sun angles provided the first stereographic coverage of the distinctive landforms collectively referred to as Imbrium sculpture. The sculpture consists of a series of nearly linear ridges and troughs extending radially outward for more than 1000 km from the rim of the Imbrium Basin. The origin of the ridges and troughs, whether by deposition and impact scoring by fluidized clouds of ejecta from the Imbrium Basin or by faulting and volcanism during and subsequent to basin formation, is controversial. Evidence indicative of the mode of origin of Imbrium sculpture is summarized as follows. Evidence of volcano-tectonic mode of origin is favored by: (1) wide variation in relative age of parts of the sculpture; (2) furrows without rims; (3) absence of ballistic shielding; (4) asymmetry of sculpture; (5) absence of randomly oriented clusters; and (6) association with other features of structural origin. An origin by ejecta scoring and deposition is favored by the gradational ejecta with a Fra Mauro-type texture. Features that are ambiguous as to mode or origin are furrows made of coalesced crater chains and prominent rims on furrows.

  15. EDXRF analysis of sculptures on polychrome wood

    International Nuclear Information System (INIS)

    Felix, Valter de Souza; Calza, Cristiane; Lopes, Ricardo Tadeu; Freitas, Renato P.

    2015-01-01

    In the last years, the analysis of sacred sculptures, belonging to museums, churches and private collectors has gained an increasing interest. This kind of analysis can be extremely valuable to conservation and restoration treatments; it can also supply important information that makes possible to identify an artist, to date a sculpture and to identify forgeries. By means of techniques such as XRF, PIXE or XRD, is possible to identify the composition of materials employed in the manufacturing of the pieces, pigments used in the polychromy and also the presence of ancient or modern retouchings. However, the fact that every artwork is a unique piece emphasizes the necessity of working with non-destructive techniques. This work reports the analysis of two sacred images on polychrome wood - portraying Our Lady (XIX century) and Saint Anthony (XVIII century) - using EDXRF. The analyses were performed with a portable system, consisting of Amptek 123-SDD detector and Mini-X X-Ray tube, with W anode, operating at 30 kV and 40 μA. The analysis of the sculpture of Our Lady revealed the use of the following pigments: lead white, lithopone, vermilion, red ochre, umber and Prussian blue. The analysis of Saint Anthony revealed: lead white, vermilion, brown ochre, bone black and Prussian blue. In both sculptures the use of gold foils for gilding was proved by the presence of Au in the spectra. These results were used to assist the restoration procedures of the sculptures. (author)

  16. EDXRF analysis of sculptures on polychrome wood

    Energy Technology Data Exchange (ETDEWEB)

    Felix, Valter de Souza; Calza, Cristiane; Lopes, Ricardo Tadeu, E-mail: ccalza@lin.ufrj.br, E-mail: ricardo@lin.ufrj.br [Coordenacao dos Programas de Pos-Graduacao em Engenharia (PEN/COPPE/UFRJ), Rio de Janeiro, RJ (Brazil); Freitas, Renato P., E-mail: renato.freitas@ifrj.edu.br, E-mail: valter.felix@ifrj.edu.br [Instituto Federal do Rio de Janeiro (IFRJ), Paracambi, RJ (Brazil)

    2015-07-01

    In the last years, the analysis of sacred sculptures, belonging to museums, churches and private collectors has gained an increasing interest. This kind of analysis can be extremely valuable to conservation and restoration treatments; it can also supply important information that makes possible to identify an artist, to date a sculpture and to identify forgeries. By means of techniques such as XRF, PIXE or XRD, is possible to identify the composition of materials employed in the manufacturing of the pieces, pigments used in the polychromy and also the presence of ancient or modern retouchings. However, the fact that every artwork is a unique piece emphasizes the necessity of working with non-destructive techniques. This work reports the analysis of two sacred images on polychrome wood - portraying Our Lady (XIX century) and Saint Anthony (XVIII century) - using EDXRF. The analyses were performed with a portable system, consisting of Amptek 123-SDD detector and Mini-X X-Ray tube, with W anode, operating at 30 kV and 40 μA. The analysis of the sculpture of Our Lady revealed the use of the following pigments: lead white, lithopone, vermilion, red ochre, umber and Prussian blue. The analysis of Saint Anthony revealed: lead white, vermilion, brown ochre, bone black and Prussian blue. In both sculptures the use of gold foils for gilding was proved by the presence of Au in the spectra. These results were used to assist the restoration procedures of the sculptures. (author)

  17. Digital pulse shape discrimination between fast neutrons and gamma rays with para-terphenyl scintillator

    Science.gov (United States)

    Chepurnov, A. S.; Kirsanov, M. A.; Klenin, A. A.; Klimanov, S. G.; Kubankin, A. S.

    2017-12-01

    In the presented work, we investigated several digital methods of a discrimination signals from fast neutrons and gamma quanta. The experimental setup consists of a Pu-Be neutron source, a scintillation detector with an organic para-terphenyl monocrystal, and a digitizer (CAEN DT5730, 500 MS/s). Mixed waveform sequences were stored and then separated by pulse shape. Four methods were used for signals separation. Comparison of the traditional and the new methods of Figure of Merit (FOM) calculation is given. FOM = 1.5 was obtained in our setup for the minimum threshold value. A scintillation detector with a para-terphenyl crystal was used to measure neutron yield in the neutron generator with carbon nanotubes.

  18. Trends in Owo traditional sculpture: 1995-2010 | Aseniserare ...

    African Journals Online (AJOL)

    This study probes into the origin, style and patronage of the traditional sculptures in Owo kingdom between 1950 and 2010. It examines comparatively the sculpture of the people and its affinity with Benin and Ife before and during the period in question with a view to predicting the future of the sculptural arts of the people in ...

  19. Atomic Oxygen Cleaning of Unpainted Plaster Sculptures

    Science.gov (United States)

    Banks, Bruce A.; Miller, Sharon K.

    2017-01-01

    Atomic oxygen erosion of polymers has been found to be a threat to spacecraft in low Earth orbit. As a result ground facilities have been developed to identify coatings to protect polymers such as used for solar array blankets. As a result of extensive laboratory testing, it was discovered that soot and other organic contamination on paintings could be readily removed by atomic oxygen interactions with minimal damage to the artwork. No method, other than dusting, has been found to be effective in the cleaning of unpainted plaster sculptures This presentation discusses the atomic oxygen interaction processes and how effective they are for cleaning soot damaged unpainted plaster sculptures.

  20. Ceramics And Sculpture Interface With Architecture.

    Directory of Open Access Journals (Sweden)

    Peters Edem E.

    2015-08-01

    Full Text Available This work is an inter-disciplinary discourse that examines the role that their collective efforts it properly harassed can play in the development of modern architecture to meet the quest for safe and comfortable homes. The paper aims at assessing how much presence there are sculpture and ceramics in architecture. Sculpture and ceramics are disciplines in fine art and industrial art respectively. The paper identifies the specific contributions each discipline gives to the making of modern architecture and offers suggestions for future improvement that will lead to entrepreneurial skill and its development.

  1. Walter Pater and the Language of Sculpture

    DEFF Research Database (Denmark)

    Østermark-Johansen, Lene

    are closely linked. Going beyond Pater's views on sculpture as an art form, this study traces the notion of relief (rilievo) and hybrid form in Pater, and his view of the writer as sculptor, a carver in language. Alongside her treatment of rilievo as a pervasive trope, Lene Østermark-Johansen also employs...... the idea of rivalry (paragone) more broadly, examining Pater's concern with positioning himself as an art critic in the late Victorian art world. Situating Pater within centuries of European aesthetic theories as never before done, Walter Pater and the Language of Sculpture throws new light...

  2. Implementation of a real-time adaptive digital shaping for nuclear spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Regadío, Alberto, E-mail: aregadio@srg.aut.uah.es [Department of Computer Engineering, Space Research Group, Universidad de Alcalá, 28805 Alcalá de Henares (Spain); Electronic Technology Area, Instituto Nacional de Técnica Aeroespacial, 28850 Torrejón de Ardoz (Spain); Sánchez-Prieto, Sebastián, E-mail: ssanchez@srg.aut.uah.es [Department of Computer Engineering, Space Research Group, Universidad de Alcalá, 28805 Alcalá de Henares (Spain); Prieto, Manuel, E-mail: mprieto@srg.aut.uah.es [Department of Computer Engineering, Space Research Group, Universidad de Alcalá, 28805 Alcalá de Henares (Spain); Tabero, Jesús, E-mail: taberogj@inta.es [Electronic Technology Area, Instituto Nacional de Técnica Aeroespacial, 28850 Torrejón de Ardoz (Spain)

    2014-01-21

    This paper presents the structure, design and implementation of a new adaptive digital shaper for processing the pulses generated in nuclear particle detectors. The proposed adaptive algorithm has the capacity to automatically adjust the coefficients for shaping an input signal with a desired profile in real-time. Typical shapers such as triangular, trapezoidal or cusp-like ones can be generated, but more exotic unipolar shaping could also be performed. A practical prototype was designed, implemented and tested in a Field Programmable Gate Array (FPGA). Particular attention was paid to the amount of internal FPGA resources required and to the sampling rate, making the design as simple as possible in order to minimize power consumption. Lastly, its performance and capabilities were measured using simulations and a real benchmark.

  3. Design of FIR digital filters for pulse shaping and channel equalization using time-domain optimization

    Science.gov (United States)

    Houts, R. C.; Vaughn, G. L.

    1974-01-01

    Three algorithms are developed for designing finite impulse response digital filters to be used for pulse shaping and channel equalization. The first is the Minimax algorithm which uses linear programming to design a frequency-sampling filter with a pulse shape that approximates the specification in a minimax sense. Design examples are included which accurately approximate a specified impulse response with a maximum error of 0.03 using only six resonators. The second algorithm is an extension of the Minimax algorithm to design preset equalizers for channels with known impulse responses. Both transversal and frequency-sampling equalizer structures are designed to produce a minimax approximation of a specified channel output waveform. Examples of these designs are compared as to the accuracy of the approximation, the resultant intersymbol interference (ISI), and the required transmitted energy. While the transversal designs are slightly more accurate, the frequency-sampling designs using six resonators have smaller ISI and energy values.

  4. Fast neutron flux analyzer with real-time digital pulse shape discrimination

    Energy Technology Data Exchange (ETDEWEB)

    Ivanova, A.A., E-mail: a.a.ivanova@inp.nsk.su [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Zubarev, P.V. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State Technical University, 630092 Novosibirsk (Russian Federation); Ivanenko, S.V. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Khilchenko, A.D. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State Technical University, 630092 Novosibirsk (Russian Federation); Kotelnikov, A.I. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Polosatkin, S.V. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State Technical University, 630092 Novosibirsk (Russian Federation); Novosibirsk State University, 630090 Novosibirsk (Russian Federation); Puryga, E.A.; Shvyrev, V.G. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State Technical University, 630092 Novosibirsk (Russian Federation); Sulyaev, Yu.S. [Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State University, 630090 Novosibirsk (Russian Federation)

    2016-08-11

    Investigation of subthermonuclear plasma confinement and heating in magnetic fusion devices such as GOL–3 and GDT at the Budker Institute (Novosibirsk, Russia) requires sophisticated equipment for neutron-, gamma- diagnostics and upgrading data acquisition systems with online data processing. Measurement of fast neutron flux with stilbene scintillation detectors raised the problem of discrimination of the neutrons (n) from background cosmic particles (muons) and neutron-induced gamma rays (γ). This paper describes a fast neutron flux analyzer with real-time digital pulse-shape discrimination (DPSD) algorithm FPGA-implemented for the GOL–3 and GDT devices. This analyzer was tested and calibrated with the help of {sup 137}Cs and {sup 252}Cf radiation sources. The Figures of Merit (FOM) calculated for different energy cuts are presented. - Highlights: • Electronic equipment for measurement of fast neutron flux with stilbene scintillator is presented. • FPGA-implemented digital pulse-shape discrimination algorithm by charge comparison method is shown. • Calibration of analyzer was carried out with {sup 137}Cs and {sup 252}Cf. • Figures of Merit (FOM) values for energy cuts from 1/8 Cs to 2 Cs are from 1.264 to 2.34 respectively.

  5. HINTS IN OMABE BASED SCULPTURE INSTALLATIONS ...

    African Journals Online (AJOL)

    ASOGWA IFEANYI

    2017-02-02

    Feb 2, 2017 ... refractive gaze approach, was developed and used, in realizing the conceptual forms in sculpture ... Introduction. Contemporary trends in art academia tend to be shifting in favour of multiple or collaborative approaches, where cultural perceptions and ..... as part and parcel of him, in his course of action.

  6. Instructional Resources: Issues in Public Sculpture.

    Science.gov (United States)

    Hill, Julie Lasater; And Others

    1988-01-01

    Presents four lesson plans for teaching K-12 students about public sculpture and contemporary sculptors. Highlights the following works: "Playscapes" by Isamu Noguchi, "The Dallas Piece" by Henry Moore, "Old Glory" by Mark di Suvero, and "Face of the Earth" by Vito Acconci. Includes background information on…

  7. The Joy of Creating Virtual Mathematical Sculptures.

    Science.gov (United States)

    Chuan, Jen-chung

    The process of turning symbols into a mathematical sculpture has never been easier. A copy of Maple V release five and a Web browser configured with a VRML plug-in such as the Cosmo Player is necessary to do these activities. Maple V furnishes the computing environment with the capability of allowing for concentration on the mathematical…

  8. Some Call It Stone: Teaching Abstract Sculpture

    Science.gov (United States)

    Asher, Rikki

    2004-01-01

    Abstract visual art is not for everybody. Some people find it threatening, uncomfortable, and often, inaccessible. Understandably, this can result in a lack of attention paid to nonrepresentational works of art in the visual arts curriculum. This article describes an experiential, hands-on, field trip that sought to demystify abstract sculpture,…

  9. A 16-channel real-time digital processor for pulse-shape discrimination in multiplicity assay

    International Nuclear Information System (INIS)

    Joyce, Malcolm J.; Aspinall, M.D.; Cave, F.D.; Lavietes, A.

    2013-06-01

    In recent years, real-time neutron/γ-ray pulse-shape discrimination has become feasible for use with scintillator-based detectors that respond extremely quickly, on the order of 25 ns in terms of pulse width, and their application to a variety of nuclear material assays has been reported. For the in-situ analysis of nuclear materials, measurements are often based on the multiplicity assessment of spontaneous fission events. An example of this is the 240 Pu eff assessment stemming from long-established techniques developed for 3 He-based neutron coincidence counters when 3 He was abundant and cheap. However, such measurements when using scintillator detectors can be plagued by low detection efficiencies and low orders of coincidence (often limited to triples) if the number of detectors in use is similarly limited to 3-4 detectors. Conversely, an array of >10 detector modules arranged to optimize efficiency and multiplicity sensitivity, shifts the emphasis in terms of performance requirement to the real-time digital analyzer and, critically, to the scope remaining in the temporal processing window of these systems. In this paper we report on the design, development and commissioning of a bespoke, 16-channel real-time pulse-shape discrimination analyzer specified for the materials assay challenge summarized above. The analyzer incorporates 16 dedicated and independent high-voltage supplies along with 16 independent digital processing channels offering pulse-shape discrimination at a rate of 3 x 10 6 events per second. These functions are configured from a dedicated graphical user interface, and all settings can be adjusted on-the-fly with the analyzer effectively configured one-time-only (where desired) for subsequent plug-and-play connection, for example to a fuel bundle organic scintillation detector array. (authors)

  10. Neutron-Gamma Pulse Shape Discrimination With Ne-213 Liquid Scintillator By Using Digital Signal Processing Combined With Similarity Method

    International Nuclear Information System (INIS)

    Mardiyanto

    2008-01-01

    Neutron-Gamma Pulse Shape Discrimination with a NE-213 Liquid Scintillator by Using Digital Signal Processing Combined with Similarity Method. Measurement of mixed neutron-gamma radiation is difficult because a nuclear detector is usually sensitive to both radiations. A new attempt of neutron-gamma pulse shape discrimination for a NE-213 liquid scintillator is presented by using digital signal processing combined with an off-line similarity method. The output pulse shapes are digitized with a high speed digital oscilloscope. The n-γ discrimination is done by calculating the index of each pulse shape, which is determined by the similarity method, and then fusing it with its corresponding pulse height. Preliminary results demonstrate good separation of neutron and gamma-ray signals from a NE-213 scintillator with a simple digital system. The results were better than those with a conventional rise time method. Figure of Merit is used to determine the quality of discrimination. The figure of merit of the discrimination using digital signal processing combined with off-line similarity method are 1.9; 1.7; 1.1; 1.1; and 0.8; on the other hand by using conventional method the rise time are 0.9; 0.9; 0.9; 0.7; and 0.4 for the equivalent electron energy of 800; 278; 139; 69; and 30 keV. (author)

  11. High frequency mode shapes characterisation using Digital Image Correlation and phase-based motion magnification

    Science.gov (United States)

    Molina-Viedma, A. J.; Felipe-Sesé, L.; López-Alba, E.; Díaz, F.

    2018-03-01

    High speed video cameras provide valuable information in dynamic events. Mechanical characterisation has been improved by the interpretation of the behaviour in slow-motion visualisations. In modal analysis, videos contribute to the evaluation of mode shapes but, generally, the motion is too subtle to be interpreted. In latest years, image treatment algorithms have been developed to generate a magnified version of the motion that could be interpreted by naked eye. Nevertheless, optical techniques such as Digital Image Correlation (DIC) are able to provide quantitative information of the motion with higher sensitivity than naked eye. For vibration analysis, mode shapes characterisation is one of the most interesting DIC performances. Full-field measurements provide higher spatial density than classical instrumentations or Scanning Laser Doppler Vibrometry. However, the accurateness of DIC is reduced at high frequencies as a consequence of the low displacements and hence it is habitually employed in low frequency spectra. In the current work, the combination of DIC and motion magnification is explored in order to provide numerical information in magnified videos and perform DIC mode shapes characterisation at unprecedented high frequencies through increasing the amplitude of displacements.

  12. Reconstruction of sculpture from its profiles with unknown camera positions.

    Science.gov (United States)

    Wong, Kwan-Yee Kenneth; Cipolla, Roberto

    2004-03-01

    Profiles of a sculpture provide rich information about its geometry, and can be used for shape recovery under known camera motion. By exploiting correspondences induced by epipolar tangents on the profiles, a successful solution to motion estimation from profiles has been developed in the special case of circular motion. The main drawbacks of using circular motion alone, namely the difficulty in adding new views and part of the object always being invisible, can be overcome by incorporating arbitrary general views of the object and registering its new profiles with the set of profiles resulted from the circular motion. In this paper, we describe a complete and practical system for producing a three-dimensional (3-D) model from uncalibrated images of an arbitrary object using its profiles alone. Experimental results on various objects are presented, demonstrating the quality of the reconstructions using the estimated motion.

  13. Application of neural networks to digital pulse shape analysis for an array of silicon strip detectors

    Energy Technology Data Exchange (ETDEWEB)

    Flores, J.L. [Dpto de Ingeniería Eléctrica y Térmica, Universidad de Huelva (Spain); Martel, I. [Dpto de Física Aplicada, Universidad de Huelva (Spain); CERN, ISOLDE, CH 1211 Geneva, 23 (Switzerland); Jiménez, R. [Dpto de Ingeniería Electrónica, Sist. Informáticos y Automática, Universidad de Huelva (Spain); Galán, J., E-mail: jgalan@diesia.uhu.es [Dpto de Ingeniería Electrónica, Sist. Informáticos y Automática, Universidad de Huelva (Spain); Salmerón, P. [Dpto de Ingeniería Eléctrica y Térmica, Universidad de Huelva (Spain)

    2016-09-11

    The new generation of nuclear physics detectors that used to study nuclear reactions is considering the use of digital pulse shape analysis techniques (DPSA) to obtain the (A,Z) values of the reaction products impinging in solid state detectors. This technique can be an important tool for selecting the relevant reaction channels at the HYDE (HYbrid DEtector ball array) silicon array foreseen for the Low Energy Branch of the FAIR facility (Darmstadt, Germany). In this work we study the feasibility of using artificial neural networks (ANNs) for particle identification with silicon detectors. Multilayer Perceptron networks were trained and tested with recent experimental data, showing excellent identification capabilities with signals of several isotopes ranging from {sup 12}C up to {sup 84}Kr, yielding higher discrimination rates than any other previously reported.

  14. Fast neutron flux analyzer with real-time digital pulse shape discrimination

    Science.gov (United States)

    Ivanova, A. A.; Zubarev, P. V.; Ivanenko, S. V.; Khilchenko, A. D.; Kotelnikov, A. I.; Polosatkin, S. V.; Puryga, E. A.; Shvyrev, V. G.; Sulyaev, Yu. S.

    2016-08-01

    Investigation of subthermonuclear plasma confinement and heating in magnetic fusion devices such as GOL-3 and GDT at the Budker Institute (Novosibirsk, Russia) requires sophisticated equipment for neutron-, gamma- diagnostics and upgrading data acquisition systems with online data processing. Measurement of fast neutron flux with stilbene scintillation detectors raised the problem of discrimination of the neutrons (n) from background cosmic particles (muons) and neutron-induced gamma rays (γ). This paper describes a fast neutron flux analyzer with real-time digital pulse-shape discrimination (DPSD) algorithm FPGA-implemented for the GOL-3 and GDT devices. This analyzer was tested and calibrated with the help of 137Cs and 252Cf radiation sources. The Figures of Merit (FOM) calculated for different energy cuts are presented.

  15. Fast-Neutron Spectrometry Using a 3He Ionization Chamber and Digital Pulse Shape Analysis

    Energy Technology Data Exchange (ETDEWEB)

    D. L. Chichester; J. T. Johnson; E. H. Seabury

    2010-05-01

    Digital pulse shape analysis (dPSA) has been used with a Cuttler-Shalev type 3He proportional counter to measure the fast neutron spectra of bare 252Cf and 241AmBe neutron sources. Measurements have also been made to determine the attenuated fast neutron spectra of 252Cf shielded by several materials including water, graphite, liquid nitrogen, magnesium, and tungsten. Rise-time dPSA has been employed using the common rise-time approach for analyzing n +3He ? 1H + 3H ionization events and a new approach has been developed to improve the fidelity of these measurements. Simulations have been performed for the different experimental arrangements and are compared, demonstrating general agreement between the dPSA processed fast neutron spectra and predictions.

  16. Generic nonsinusoidal phase error correction for three-dimensional shape measurement using a digital video projector.

    Science.gov (United States)

    Zhang, Song; Yau, Shing-Tung

    2007-01-01

    A structured light system using a digital video projector is widely used for 3D shape measurement. However, the nonlinear gamma of the projector causes the projected fringe patterns to be nonsinusoidal, which results in phase error and therefore measurement error. It has been shown that, by using a small look-up table (LUT), this type of phase error can be reduced significantly for a three-step phase-shifting algorithm. We prove that this algorithm is generic for any phase-shifting algorithm. Moreover, we propose a new LUT generation method by analyzing the captured fringe image of a flat board directly. Experiments show that this error compensation algorithm can reduce the phase error to at least 13 times smaller.

  17. Characteristics of digital micromirror projection for 3D shape measurement at extreme speed

    Science.gov (United States)

    Höfling, Roland; Aswendt, Petra; Leischnig, Frank; Förster, Matthias

    2015-03-01

    3D shape measurement is one of the growing industrial applications of the Texas Instruments DLP® micro-mirror device. This paper presents investigations on precision and repeatability of that spatial light modulators output when it is driven up to its high-speed limit. The study concerns the basic switching behavior of the individual micro-mirror at different frame rates ranging over three orders of magnitude. The 3D shape measuring methodologies are focused on phase encoded triangulation, i.e. the projection of sinusoidal patterns. The DLP chip is a bi-stable device providing an on/off pattern at each certain moment in time, i.e. it has a native binary output. Sinusoidal patterns are the result of either a temporal integration of multiple on/off patterns or a spatial integration within one on/off pattern. Both approaches are studied experimentally with respect to precision and stability of the pattern output. The STAR-07 industrial projection unit, based upon the 0.7" DLP Discovery™4100 chipset, has been used for this work and the pattern frame rates cover the range from 225 frames per second (fps) to 50,000 fps. The STAR-07 output is detected by a photodiode, amplified, and analyzed in a Yokogawa digital storage oscilloscope. All results prove the very high precision and repeatability of the STAR-07 pattern projection, up to the extreme speed of 50,000 fps.

  18. 3D shape, deformation, and vibration measurements using infrared Kinect sensors and digital image correlation.

    Science.gov (United States)

    Nguyen, Hieu; Wang, Zhaoyang; Jones, Patrick; Zhao, Bing

    2017-11-10

    Consumer-grade red-green-blue and depth (RGB-D) sensors, such as the Microsoft Kinect and the Asus Xtion, are attractive devices due to their low cost and robustness for real-time sensing of depth information. These devices provide the depth information by detecting the correspondences between the captured infrared (IR) image and the initial image sent to the IR projector, and their essential limitation is the low accuracy of 3D shape reconstruction. In this paper, an effective technique that employs the Kinect sensors for accurate 3D shape, deformation, and vibration measurements is introduced. The technique involves using the RGB-D sensors, an accurate camera calibration scheme, and area- and feature-based image-matching algorithms. The IR speckle pattern projected from the Kinect projector considerably facilitates the digital image correlation analysis in the regions of interest with enhanced accuracy. A number of experiments have been carried out to demonstrate the validity and effectiveness of the proposed technique and approach. It is shown that the technique can yield measurement accuracy at the 10 μm level for a typical field of view. The real-time capturing speed of 30 frames per second makes the proposed technique suitable for certain motion and vibration measurements, such as non-contact monitoring of respiration and heartbeat rates.

  19. The StorySpinner Sculptural Reader

    OpenAIRE

    Hooper, Clare; Weal, Mark

    2005-01-01

    This demo is of a hypertext reading system called StorySpinner. It follows the sculptural hypertext methodology and has been used as a test bed for experimenting with the authoring of narrative flow in automatically generated stories. Readers are able to select and read one of two available stories. Reading a story involves selecting tarot cards which are mapped to chunks of story text based on possible interpretations of the cards and information concerning current story state.

  20. ' "Life is Movement": Vernon Lee and Sculpture'

    DEFF Research Database (Denmark)

    Østermark-Johansen, Lene

    2018-01-01

    How do living, breathing human bodies respond to the inert bodies of sculpture? This article examines some of the art-theoretical and psychological writings of Violet Paget (‘Vernon Lee’) and Clementina Anstruther-Thomson of the 1880s and 1890s in an attempt to map the evolution of their formalist...... from Lee’s early essays in Belcaro: Being Essays on Sundry Aesthetical Questions (1881) to the late collaborative volume Art and Man (1924)....

  1. Beauty and ugliness in Olmec monumental sculpture

    OpenAIRE

    Baudez, Claude-François

    2015-01-01

    Beauty and ugliness in Olmec monumental sculpture. Since our Western art tradition has put such a prize on naturalism, we tend to think that other civilizations valued it as much as we did and do. I contend that Olmec monumental art illustrates the opposite, and suggest that the Olmecs most appreciated the anthropomorphic statues that incorporated feline features, and disliked the very naturalistic style of the colossal heads. The latter represented the severed heads of opponents who probably...

  2. Visual Identity of Malaysian Modern Sculpture

    Directory of Open Access Journals (Sweden)

    Abdul Halim Husain

    2014-10-01

    Full Text Available An artwork is the manifestation of an artist’s utilization of a variety of approaches, which is closely related to the idea of an artist, media and technique. The manipulation of an artwork is based on the relationship of an artist, idea and media, through formalistic approaches and the surrounding community. Understanding of the visual identity is related to other disciplines in fine art, such as painting, printing and drawing, and new media because of the nature of its context, which is based on the physical form and space. The aim of this research is to generate knowledge on visual identity through sculpture. The research explores the forms and the symbolic meanings based on the influence of the local community and social system. This study employs the cultural concept as a system to create an understanding framework to the process of creating artwork. The qualitative approach is used as the methodology framework, which is deemed as suitable to the problem of investigating the visual identity in sculptures. The findings uncover that Malaysian sculptures synergize harmoniously the value system with modern expression, through belief, surroundings, needs and social requirements. These findings contribute to the knowledge of art, generally, that can be used in other fields of art in the process of creation and appreciation.

  3. Agreement in the determination of preformed wire shape templates on plaster models and customized digital arch form diagrams on digital models.

    Science.gov (United States)

    Camardella, Leonardo Tavares; Sá, Maiara da Silva Bezerra; Guimarães, Luciana Campos; Vilella, Beatriz de Souza; Vilella, Oswaldo de Vasconcellos

    2018-03-01

    The aim of this study was to verify the accuracy of preformed wire shape templates on plaster models and those of customized digital arch form diagrams on digital models. Twenty pairs of dental plaster models were randomly selected from the archives of the Department of Orthodontics of Federal Fluminense University, Niterói, Rio de Janeiro, Brazil. All plaster model samples were scanned in a plaster model scanner to create the respective digital models. Three examiners defined the arch form on the mandibular arch of these models by selecting the ideal preformed wire shape template on each plaster model or by making a customized digital arch form on the digital models using a digital arch form customization tool. These 2 arch forms were superimposed by the best-fit method. The greatest differences in the 6 regions on the superimposed arches were evaluated. Each examiner presented a descriptive analysis with the means, standard deviation, and minimum and maximum intervals of the differences on the superimpositions. Intraclass correlation coefficient and paired t tests were used to evaluate the accuracy of the superimpositions. Among the 6 regions analyzed in the superimpositions, the largest differences in the anterior and premolar regions were considered clinically insignificant, whereas the largest differences in the right molar region, especially the second molar area, were considered clinically significant by all 3 examiners. The intraclass correlation coefficients showed a weak correlation in the premolar region and moderate correlations in the anterior and molar regions. The paired t test showed statistically significant differences in the left anterior and premolar regions. The superimpositions between the arch forms on plaster and digital models were considered accurate, and the differences were not clinically significant, with the exception of the second molar area. Despite the favorable results, the requirement of correcting some software problems may

  4. Seed sculpture of Polish species of the genus Plantago L.

    Directory of Open Access Journals (Sweden)

    Małgorzata Klimko

    2011-01-01

    Full Text Available The paper presents results of research on seed sculpture of Plantago major, P. intermedia, P. media, P. coronopus subsp. coronopus, P. maritima subsp. maritima, P. atrata subsp. carpatica, P. lanceolata and P. arenaria. Special attention was paid to the sculpture of the external layer of the testa. Observations were made under a light microscope and a scanning electron microscope. The sculpture typical for each species was presented in micrographs. The results indicate that seed sculpture is a very good interspecific identification feature. The study also confirmed that P. maritima should not be assigned to the section Coronopus DC., but to a separate section Maritima Rahn.

  5. Some important aspects of the amplitude, charge and shape analog signals digitization in nuclear physics experiment

    International Nuclear Information System (INIS)

    Kulka, Z.

    1995-01-01

    One of the fundamental reasons of the special requirements concerning analog-to-digital converters (ADC's) used in nuclear experimental physics, especially in nuclear spectroscopy, in comparison to the conventional ADC's is a fact that they are utilized for continuous distribution measurements which are the nuclear radiation spectra. The ADC's used for distribution registration in form of amplitude or charge histogram spectra should have the differential linearity of two orders of magnitude better than that for conventional ADC's. Moreover, the problem of achievement the acceptable differential linearity (as well as stability) in nuclear spectroscopy is much more complicated because high resolution and high speed of the converters are also required. The first requirement comes out from application of semiconductor detectors, the second one comes from the statistical character of the nuclear processes, as well as, a necessity of collection of huge amount of nuclear data - often in a short time. In this report the influence of the specific needs of the nuclear experiments on the conversion methods selection and construction principles of the pulse ADC's is analyzed. Focus is taken on these ADC's which are used mainly to digital amplitude and charge detector signals measurements in nuclear spectroscopy. Based on the chosen examples of different types of ADC's it is shown how to obtain the required metrological parameters by using enlarged converter's structures and proper choice of the electronics components. In addition, a problem of the detector signals shape measurements in particle physics using the high speed flash ADC's is also discussed. (author). 196 refs, 99 figs, 7 tabs

  6. Review of the research on “structural bionic” method of large sculpture

    Science.gov (United States)

    Yin, Jiang; Yang, Wenchang

    2017-09-01

    This paper presented the basic concept of bionic sculpture and summarized the application status of “structural bionic”theory in large bionic sculpture field. Introduced the development trend and challenges of large bionic sculpture and pointed out that the sculpture's “structural bionic” can bring higher mechanical performance of the new structure and system, The evaluation method and structure design for large bionic sculpture are urgently needed.Finally prospected the market of the large bionic sculpture.

  7. The use of linear programming techniques to design optimal digital filters for pulse shaping and channel equalization

    Science.gov (United States)

    Houts, R. C.; Burlage, D. W.

    1972-01-01

    A time domain technique is developed to design finite-duration impulse response digital filters using linear programming. Two related applications of this technique in data transmission systems are considered. The first is the design of pulse shaping digital filters to generate or detect signaling waveforms transmitted over bandlimited channels that are assumed to have ideal low pass or bandpass characteristics. The second is the design of digital filters to be used as preset equalizers in cascade with channels that have known impulse response characteristics. Example designs are presented which illustrate that excellent waveforms can be generated with frequency-sampling filters and the ease with which digital transversal filters can be designed for preset equalization.

  8. An optimized toolchain for predicting directivity patterns from digital representations of biological shapes

    Science.gov (United States)

    Müller, Rolf

    2005-09-01

    Animals have evolved intricate shapes which diffract emitted or received sound and thereby generate a specific directivity pattern. Computer-tomographic methods can generate high-resolution digital representations of these morphological structures in the form of three-dimensional voxel arrays. However, predicting acoustic directivity patterns from these representations with numerical methods can incur high computational cost, e.g., for large structures with fine detail and/or high wave numbers (as in bats and dolphins). Here, the design of a toolchain is described which can handle all steps of deriving a directivity prediction from a voxel representation: generation of a finite-element mesh, assembly of the system matrix, computation of an approximate solution, forward projection into the far field. All individual operations are performed by self-contained tools, which communicate through files. This gives access to intermediate results and limits re-execution upon parameter changes to downstream steps. At each stage, optimizations can be made based on the specifics of the problem such as the regular structure of the voxel array and the distance independence of the directivity. Use of these optimizations has resulted in a highly efficient performance, which is documented by measures for execution speed, memory usage, and accuracy.

  9. Separating Morphologically Similar Pollen Types Using Basic Shape Features from Digital Images: A Preliminary Study

    Directory of Open Access Journals (Sweden)

    Katherine A. Holt

    2014-08-01

    Full Text Available Premise of the study: One of the many advantages offered by automated palynology systems is the ability to vastly increase the number of observations made on a particular sample or samples. This is of particular benefit when attempting to fully quantify the degree of variation within or between closely related pollen types. Methods: An automated palynology system (Classifynder has been used to further investigate the variation in pollen morphology between two New Zealand species of Myrtaceae (Leptospermum scoparium and Kunzea ericoides that are of significance in the New Zealand honey industry. Seven geometric features extracted from automatically gathered digital images were used to characterize the range of shape and size of the two taxa, and to examine the extent of previously reported overlap in these variables. Results: Our results indicate a degree of overlap in all cases. The narrowest overlap was in measurements of maximum Feret diameter (MFD in grains oriented in polar view. Multivariate statistical analysis using all seven factors provided the most robust discrimination between the two types. Discussion: Further work is required before this approach could be routinely applied to separating the two pollen types used in this study, most notably the development of comprehensive reference distributions for the types in question.

  10. Two-dimensional analysis of shape-fabric using projections of digitized lines in a plane

    Science.gov (United States)

    Panozzo, Renée H.

    1983-06-01

    A method of two-dimensional shape-fabric analysis is presented which is based on the projection of lines or ellipses on the x-axis. If a set of lines or ellipses displays a preferred orientation, the average length of projection of the lines or ellipses on the x-axis changes with direction in the x- y plane. The proposed method involves use of Fortran programs which evaluate the average length of projection of lines (e.g., outlines of ooides, pressure solution seams) while the fabric is rotated by small increments in a counterclockwise sense about the origin of the x - y plane. Data acquisition is by digitizing the lines on an enlarged photograph. The sets of x- y coordinates that are thus obtained serve as input for the programs. The basic equations of the method are explained and application to a sedimentary fabric is demonstrated. The proposed method is both fast and sensitive. It is especially useful if the particle outlines are closely spherical or if the fabric is only weakly developed. Yet, the method is not restricted to weak fabrics only. Also, if the fabric is due to deformation this method yields the axes of the two-dimensional strain ellipse.

  11. Adaptive digital fringe projection technique for high dynamic range three-dimensional shape measurement.

    Science.gov (United States)

    Lin, Hui; Gao, Jian; Mei, Qing; He, Yunbo; Liu, Junxiu; Wang, Xingjin

    2016-04-04

    It is a challenge for any optical method to measure objects with a large range of reflectivity variation across the surface. Image saturation results in incorrect intensities in captured fringe pattern images, leading to phase and measurement errors. This paper presents a new adaptive digital fringe projection technique which avoids image saturation and has a high signal to noise ratio (SNR) in the three-dimensional (3-D) shape measurement of objects that has a large range of reflectivity variation across the surface. Compared to previous high dynamic range 3-D scan methods using many exposures and fringe pattern projections, which consumes a lot of time, the proposed technique uses only two preliminary steps of fringe pattern projection and image capture to generate the adapted fringe patterns, by adaptively adjusting the pixel-wise intensity of the projected fringe patterns based on the saturated pixels in the captured images of the surface being measured. For the bright regions due to high surface reflectivity and high illumination by the ambient light and surfaces interreflections, the projected intensity is reduced just to be low enough to avoid image saturation. Simultaneously, the maximum intensity of 255 is used for those dark regions with low surface reflectivity to maintain high SNR. Our experiments demonstrate that the proposed technique can achieve higher 3-D measurement accuracy across a surface with a large range of reflectivity variation.

  12. Separating morphologically similar pollen types using basic shape features from digital images: A preliminary study1

    Science.gov (United States)

    Holt, Katherine A.; Bebbington, Mark S.

    2014-01-01

    • Premise of the study: One of the many advantages offered by automated palynology systems is the ability to vastly increase the number of observations made on a particular sample or samples. This is of particular benefit when attempting to fully quantify the degree of variation within or between closely related pollen types. • Methods: An automated palynology system (Classifynder) has been used to further investigate the variation in pollen morphology between two New Zealand species of Myrtaceae (Leptospermum scoparium and Kunzea ericoides) that are of significance in the New Zealand honey industry. Seven geometric features extracted from automatically gathered digital images were used to characterize the range of shape and size of the two taxa, and to examine the extent of previously reported overlap in these variables. • Results: Our results indicate a degree of overlap in all cases. The narrowest overlap was in measurements of maximum Feret diameter (MFD) in grains oriented in polar view. Multivariate statistical analysis using all seven factors provided the most robust discrimination between the two types. • Discussion: Further work is required before this approach could be routinely applied to separating the two pollen types used in this study, most notably the development of comprehensive reference distributions for the types in question. PMID:25202650

  13. Separating morphologically similar pollen types using basic shape features from digital images: A preliminary study(1.).

    Science.gov (United States)

    Holt, Katherine A; Bebbington, Mark S

    2014-08-01

    One of the many advantages offered by automated palynology systems is the ability to vastly increase the number of observations made on a particular sample or samples. This is of particular benefit when attempting to fully quantify the degree of variation within or between closely related pollen types. • An automated palynology system (Classifynder) has been used to further investigate the variation in pollen morphology between two New Zealand species of Myrtaceae (Leptospermum scoparium and Kunzea ericoides) that are of significance in the New Zealand honey industry. Seven geometric features extracted from automatically gathered digital images were used to characterize the range of shape and size of the two taxa, and to examine the extent of previously reported overlap in these variables. • Our results indicate a degree of overlap in all cases. The narrowest overlap was in measurements of maximum Feret diameter (MFD) in grains oriented in polar view. Multivariate statistical analysis using all seven factors provided the most robust discrimination between the two types. • Further work is required before this approach could be routinely applied to separating the two pollen types used in this study, most notably the development of comprehensive reference distributions for the types in question.

  14. Glancing angle deposition of sculptured thin metal films at room temperature

    Science.gov (United States)

    Liedtke, S.; Grüner, Ch; Lotnyk, A.; Rauschenbach, B.

    2017-09-01

    Metallic thin films consisting of separated nanostructures are fabricated by evaporative glancing angle deposition at room temperature. The columnar microstructure of the Ti and Cr columns is investigated by high resolution transmission electron microscopy and selective area electron diffraction. The morphology of the sculptured metallic films is studied by scanning electron microscopy. It is found that tilted Ti and Cr columns grow with a single crystalline morphology, while upright Cr columns are polycrystalline. Further, the influence of continuous substrate rotation on the shaping of Al, Ti, Cr and Mo nanostructures is studied with view to surface diffusion and the shadowing effect. It is observed that sculptured metallic thin films deposited without substrate rotation grow faster compared to those grown with continuous substrate rotation. A theoretical model is provided to describe this effect.

  15. Virtual Steel Connection Sculpture--Student Learning Assessment

    Science.gov (United States)

    Chou, Karen C.; Moaveni, Saeed; Drane, Denise

    2016-01-01

    A Virtual Steel Connection Sculpture was developed through a grant from the National Science Foundation. The Virtual Sculpture is an interactive tool that shows students and anyone interested in connections how steel members are connected. This tool is created to complement students' steel design courses. The features of this educational tool,…

  16. The Sculptural Elements in Kwagh-Hir Popular Theatre: The ...

    African Journals Online (AJOL)

    Moreover, recent study has registered an increasing (influence of globalization) on aspects of Kwagh-hir sculpturing and themes. This paper attempts a scrutiny of the sculptural element in Kwagh-hir theatre as a complement to its other features, identifying and tracing its growth from its beginning to its current stage within ...

  17. Apical Shell Sculpture of some African Freshwater Limpets ...

    African Journals Online (AJOL)

    A Scanning Electron Microscope has been used to describe in detail the apical shell sculpture of sevenAfrican species (three genera) of freshwater limpet snails (Ancylidae). The apical sculpture of Ancylus fluviatilis (? syn. strigatus and ? brondeli) is striate, but quite different in basic pattern from the other three striate ...

  18. Mother goddesses with boat motifs on stone sculptures from Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Kerkar, R.; Gaur, A.S.

    to assign a particular date for these sculptures on the style basis as they belong local folk tradition. However, there state of present condition and comparison with modern sculpture indicate that these could be much older which need to be debated...

  19. Hybridization of phase retrieval and off-axis digital holography for high resolution imaging of complex shape objects

    Science.gov (United States)

    Wang, Fengpeng; Wang, Dayong; Rong, Lu; Wang, Yunxin; Zhao, Jie

    2017-05-01

    In this paper, a hybrid method of phase retrieval and off-axis digital holography is proposed for imaging of the complex shape objects. Off-axis digital hologram and in-line hologram are recorded. The approximate phase distributions in the recording plane and object plane are obtained by constrained optimization approach from the off-axis hologram, and they are used as the initial value and the constraints in the phase retrieval for eliminating the twin image of in-line holography. Numerical simulations and optical experiments were carried out to validate the proposed method.

  20. Digital Pulse Shape Analysis with Phoswich Detectors to Simplify Coincidence Measurements of Radioactive Xenon

    International Nuclear Information System (INIS)

    Hennig, Wolfgang; Tan, Hui; Warburton, William K.; McIntyre, Justin I.

    2005-01-01

    The Comprehensive Nuclear-Test-Ban Treaty establishes a network of monitoring stations to detect radioactive Xenon in the atmosphere from nuclear weapons testing. One such monitoring system is the Automated Radio-xenon Sampler/Analyzer (ARSA) developed at Pacific Northwest National Laboratory, which uses a complex arrangement of separate beta and gamma detectors to detect beta-gamma coincidences from the Xe isotopes of interest. The coincidence measurement is very sensitive, but the large number of detectors and photomultiplier tubes require careful calibration which makes the system hard to use. It has been suggested that beta-gamma coincidences could be detected with only a single photomultiplier tube and electronics channel by using a phoswich detector consisting of optically coupled beta and gamma detectors (Ely, 2003). In that work, rise time analysis of signals from a phoswich detector was explored as a method to determine if interactions occurred in either the beta or the gamma detector or in both simultaneously. However, this approach was not able to detect coincidences with the required sensitivity or to measure the beta and gamma energies with sufficient precision for Xenon monitoring. In this paper, we present a new algorithm to detect coincidences by pulse shape analysis of the signals from a BC-404/CsI(Tl) phoswich detector. Implemented on fast digital readout electronics, the algorithm achieves clear separation of beta only, gamma only and coincidence events, accurate measurement of both beta and gamma energies, and has an error rate for detecting coincidences of less than 0.1%. Monte Carlo simulations of radiation transport and light collection were performed to optimize design parameters for a replacement detector module for the ARSA system, obtaining an estimated coincidence detection efficiency of 82-92% and a background rejection rate better than 99%. The new phoswich/pulse shape analysis method is thus suitable to simplify the existing ARSA

  1. Digital and optical shape representation and pattern recognition; Proceedings of the Meeting, Orlando, FL, Apr. 4-6, 1988

    Science.gov (United States)

    Juday, Richard D. (Editor)

    1988-01-01

    The present conference discusses topics in pattern-recognition correlator architectures, digital stereo systems, geometric image transformations and their applications, topics in pattern recognition, filter algorithms, object detection and classification, shape representation techniques, and model-based object recognition methods. Attention is given to edge-enhancement preprocessing using liquid crystal TVs, massively-parallel optical data base management, three-dimensional sensing with polar exponential sensor arrays, the optical processing of imaging spectrometer data, hybrid associative memories and metric data models, the representation of shape primitives in neural networks, and the Monte Carlo estimation of moment invariants for pattern recognition.

  2. Restitution of sculptural groups using 3D scanners.

    Science.gov (United States)

    Merchán, Pilar; Salamanca, Santiago; Adán, Antonio

    2011-01-01

    Imagine for a moment that you have to solve a 3D jigsaw of which you have lost several pieces. You have also lost the original box-top showing the final picture, and as if that were not enough, some of the pieces you do have may belong to some other jigsaw. This is in essence the sort of challenge that we faced in the novel project that we shall be describing in this paper. The final aim of the project was, with the help of 3D scanners, to digitalize and reconstruct multi-piece classical sculptures. Particularly, we tackle the restitution of the so-called "Aeneas Group", a famous iconographic reference during the Roman Empire. We have undertaken this ambitious project in collaboration with the research department of the Spanish National Museum of Roman Art (MNAR). This paper summarizes the real problems that arose and had to be solved, the innovations, and the main results of the work that we have carried out over these recent years.

  3. Restitution of Sculptural Groups Using 3D Scanners

    Science.gov (United States)

    Merchán, Pilar; Salamanca, Santiago; Adán, Antonio

    2011-01-01

    Imagine for a moment that you have to solve a 3D jigsaw of which you have lost several pieces. You have also lost the original box-top showing the final picture, and as if that were not enough, some of the pieces you do have may belong to some other jigsaw. This is in essence the sort of challenge that we faced in the novel project that we shall be describing in this paper. The final aim of the project was, with the help of 3D scanners, to digitalize and reconstruct multi-piece classical sculptures. Particularly, we tackle the restitution of the so-called “Aeneas Group”, a famous iconographic reference during the Roman Empire. We have undertaken this ambitious project in collaboration with the research department of the Spanish National Museum of Roman Art (MNAR). This paper summarizes the real problems that arose and had to be solved, the innovations, and the main results of the work that we have carried out over these recent years. PMID:22164088

  4. Making Sense: Interactive Sculptures as Tangible Design Material

    DEFF Research Database (Denmark)

    Jensen, Mads Vedel; Stienstra, Marcelle

    2007-01-01

    is experienced. The exercise utilizes the designer’s own bodily experiences in the design of new tangible interfaces. The design exercise was done with a group of design students. We asked them to design interactive sculptures to convey the interaction qualities they had extracted from video material....... The interactive sculptures served as a physical reflective tool that allowed the students to test and experience the qualities of interaction they wanted to bring into a new design, before they moved on to designing the actual product. We conclude that interactive sculptures serve as a rich design material...

  5. Handedness, Hinduism and sculpture: searching for evidence of lateralisation.

    Science.gov (United States)

    Bhushan, Braj; Rai Sapru, Shikha

    2008-07-01

    The majority of people throughout the world show extreme preference for the right hand. We studied lateral bias depicted in ancient Indian sculptures dating between the 7th and 9th centuries ad. A total of 288 sculptures were selected from various excavation sites/museums and the frequencies were computed on 13 different criteria in order to see the preferential bias for hand depicted in sculptures of male and female figures. The findings are discussed in the light of Hindu mythology and rituals.

  6. A natural approach to convey numerical digits using hand activity recognition based on hand shape features

    Science.gov (United States)

    Chidananda, H.; Reddy, T. Hanumantha

    2017-06-01

    This paper presents a natural representation of numerical digit(s) using hand activity analysis based on number of fingers out stretched for each numerical digit in sequence extracted from a video. The analysis is based on determining a set of six features from a hand image. The most important features used from each frame in a video are the first fingertip from top, palm-line, palm-center, valley points between the fingers exists above the palm-line. Using this work user can convey any number of numerical digits using right or left or both the hands naturally in a video. Each numerical digit ranges from 0 to9. Hands (right/left/both) used to convey digits can be recognized accurately using the valley points and with this recognition whether the user is a right / left handed person in practice can be analyzed. In this work, first the hand(s) and face parts are detected by using YCbCr color space and face part is removed by using ellipse based method. Then, the hand(s) are analyzed to recognize the activity that represents a series of numerical digits in a video. This work uses pixel continuity algorithm using 2D coordinate geometry system and does not use regular use of calculus, contours, convex hull and datasets.

  7. Examining “Digital Development”:The Shape of Things to Come?

    OpenAIRE

    Heeks, Richard

    2016-01-01

    For at least a generation, the current ICT4D paradigm will dominate the relationship between digital technologies and international development. But there are signs of change. Diffusion and use of ICTs is such that we can start to talk about a “digital nervous system” for development. And ICTs are becoming more deeply integrated into all aspects of development. So we can foresee a “digital development” paradigm in which ICTs are no longer just tools to enable particular aspects of development...

  8. Suture techniques in nasal tip sculpture: current concepts.

    Science.gov (United States)

    Lo, S; Rowe-Jones, J

    2007-08-01

    The three-dimensional anatomy and conspicuous location of the nasal tip makes it one of the most challenging sites of facial plastic surgery. This article reviews literature on nasal tip sculpture using suture techniques, as well as the authors' own experience. A search was conducted using Pubmed, the Google internet search engine and the authors' files, using the keywords 'nasal tip', 'suture', 'rhinoplasty' and 'septorhinoplasty'. Common nasal tip suture techniques and suture algorithms are presented, along with a summary of the indications and side effects of each technique. Predictable long-term results are more likely to occur with minimal local tissue excision. Suture techniques remodel the shape of the nasal tip by altering the configuration of, and the relationship between, the tip cartilages and their supporting structures; they also preserve nasal tip anatomy and limit resection. Intra-operatively, the effects are immediately visible, and can be adjusted or reversed. Tip sutures should therefore be considered instead of tissue excision whenever possible.

  9. 4D Visualization of Painted Sculpture and Murals

    Science.gov (United States)

    Ai, M. Y.; Tong, H.; Shen, L.; Wang, R. X.; Zhang, F.; Zhang, Z. C.; Hu, Q. W.; Zhu, Y. X.; Zhang, H.

    2015-08-01

    Most cultural heritage applications address visualization with using various media or platforms: desktop-based multimedia presentations, museum kiosks, or videos produced with computer animation. However, these techniques can not directly reveal or show the course that the colorful surface of painted sculpture and murals becomes faint along with the change of the climate and time. Most current techniques just preserve the current appearance and disseminate the current situation of the painted sculpture and murals. The course how these forms of cultural heritage change along the time has not been visualized. In this paper we developed an approach to modelling of painted sculpture and murals that has undergone changes over the years. Different hypotheses has also be given if there is uncertainty. A painted sculpture of Mogao Grottoes is used to demonstate this approach.

  10. Photogeology: Part G: structural aspects of Imbrium sculpture

    Science.gov (United States)

    Scott, David H.

    1972-01-01

    Apollo 16 metric photographs taken at low to high Sun angles (from approximately 7° to 40°) provide the first stereographic coverage of the distinctive landforms collectively referred to as "Imbrium sculpture" (refs. 29-40 and 29-41). The sculpture consists of a series of nearly linear ridges and troughs extending radially outward for more than 1000 km from the rim of the Imbrium Basin. The sculpture is particularly well developed in the highlands southwest of the basin, where individual segments have lengths measured in tens of kilometers. THe origin of the ridges and troughs, whether by deposition and impact scoring by fluidized clouds of ejecta from the Imbrium Basin or by faulting and volcanism during and subsequent to basin formation, is controversial. Similar appearing features occur around other large basins on both the near and far sides of the Moon; thus, information leading to a better interpretation of Imbrium sculpture has significance throughout the Moon.

  11. A triple-crystal phoswich detector with digital pulse shape discrimination for alpha/beta/gamma spectroscopy

    International Nuclear Information System (INIS)

    White, Travis L.; Miller, William H.

    1999-01-01

    Researchers at the University of Missouri - Columbia have developed a three-crystal phoswich detector coupled to a digital pulse shape discrimination system for use in alpha/beta/gamma spectroscopy. Phoswich detectors use a sandwich of scintillators viewed by a single photomultiplier tube to simultaneously detect multiple types of radiation. Separation of radiation types is based upon pulse shape difference among the phosphors, which has historically been performed with analog circuitry. The system uses a GaGe CompuScope 1012, 12 bit, 10 MHz computer-based oscilloscope that digitally captures the pulses from a phoswich detector and subsequently performs pulse shape discrimination with cross-correlation analysis. The detector, based partially on previous phoswich designs by Usuda et al., uses a 10 mg/cm 2 thick layer of ZnS(Ag) for alpha detection, followed by a 0.254 cm CaF 2 (Eu) crystal for beta detection, all backed by a 2.54 cm NaI(Tl) crystal for gamma detection. Individual energy spectra and count rate information for all three radiation types are displayed and updated periodically. The system shows excellent charged particle discrimination with an accuracy of greater than 99%. Future development will include a large area beta probe with gamma-ray discrimination, systems for low-energy photon detection (e.g. Bremsstrahlung or keV-range photon emissions), and other health physics instrumentation

  12. Cross Sectional Attitudes of Public Sculpture Matrix in Southwestern Nigeria

    Directory of Open Access Journals (Sweden)

    Moses Akintunde Akintonde

    2016-06-01

    Full Text Available Public outdoor sculpture practice in the Southwestern Nigeria entails different types of attitudes. These attitudes are discernable from the stage of commissioning of work, its conceptualization to the display and uses in the public sphere generated diverse fundamental, constant technical issues. Some are explicitly alluring while others are absurd, fleeting and injurious to the practice. However, whatever attitude advanced in the public outdoor sculpture practice, it has not been discussed cross sectionally. The inadequate scholarship attention on the attitudinal issues in outdoor sculpture certainly created art historical gap apt to make the study of contemporary Nigeria art incoherent. Apparently, attitudinal studies certainly involve psychological measurement - a type of instrument that does not required descriptive survey. For this reason, the study was based on qualitative methods. The study categorised various attitudes in outdoor sculpture practice in the studied area into pre-unveiling, unveiling and post unveiling stages and critically examined them. Some attitudes in the practice of the art were observed to be stimulant for advancement; invariably others are clearly incongruous to the spirit of typical Yoruba societal value orientation in orderliness, therefore degrading and detrimental to the development of the outdoor sculpture in the public sphere.Keywords: Art patron; cross sectional attitude; outdoor sculpture; post-unveiling; pre-unveiling; public art; Southwestern Nigeria; unveiling.

  13. The thinker: opposing directionality of lighting bias within sculptural artwork

    Science.gov (United States)

    Sedgewick, Jennifer R.; Weiers, Bradley; Stewart, Aaron; Elias, Lorin J.

    2015-01-01

    Individuals tend to perceive the direction of light to come from above and slightly from the left; it has been speculated that this phenomenon is also producing similar lighting preferences within 2-dimensional artworks (e.g., paintings, advertisements). The purpose of the present study was to address if lighting bias was present in the 3-dimensional medium of sculpture by implementing a virtual art gallery lighting paradigm. Thirty-nine participants completed a computer task that consisted of 48 galleries each containing one sculpture (24 original sculptures, 24 mirror-reversed) which was surrounded by eight lights (above/below, left/right, front/back). Participants would select one light source to illuminate the sculpture in a manner they perceived to be the most aesthetically pleasing. The results indicated a significant preference for lights positioned from above and from the right, a finding that is contradictory to previous lighting bias research examining artworks. An interpretation for the rightward bias applies the perceptual concept of subjective lighting equality. Objects illuminated from the left typically appear brighter in comparison to right-side lighting; in sculpture, however, increased luminosity can reduce the sculptural detail, and may have been compensated via right-side lighting choices within the lighting task. PMID:25999840

  14. Shaving a Shell: Effect of Manipulated Sculpture and Feeding on Shell Growth and Sculpture Development in Nucella lamellosa (Muricidae: Ocenebrinae).

    Science.gov (United States)

    Webster, Nicole B; Palmer, A Richard

    2016-02-01

    Gastropod shell sculpture offers a novel tool for studying morphological patterning. Existing shell features may be manipulated experimentally to test how alteration affects subsequent shell growth and form. Axial sculpture occurs in many gastropod groups, and spacing of sculpture may be regular or irregular. But how gastropods control sculpture placement during shell growth is unknown. We studied the growth and positioning of axial lamellae in the muricid Nucella lamellosa, and compared these to the superficially similar axial varices seen in other muricids. First, we tested whether the feeding rate had any effect on the rate of addition or positioning of new lamellae. Second, we tested what effect previous shell sculpture had on lamellar placement, and shell growth in general, by removing all shell sculpture and allowing snails to grow over the "shaved" shell surface. Lamellar growth appeared to be relatively plastic; spacing was highly variable both within and among individual snails, and 1-2 weeks were required to complete the addition of a new lamella. Body growth rate was the primary determinant of lamellar growth; past lamellae had no effect on placement of new lamellae or rate of shell length increase. Feeding rate and body size affected only growth in shell length, and had no direct effect on spacing or on the rate of addition of new lamellae. The growth of axial lamellae in N. lamellosa differed from that of varices by exhibiting neither a) regular spacing nor b) a growth hiatus after completion of a lamella. Significantly, despite the obvious impediment of previous sculpture to future shell growth, removal of this sculpture had no observable effect on the rate of body growth or on any aspect of subsequent lamellar growth. © 2016 Marine Biological Laboratory.

  15. Spines vs. microspines: an overview of the sculpture exine in selected basal and derived Asteraceae with focus on Asteroideae.

    Science.gov (United States)

    Tellería, María C

    2017-11-01

    This study presents a detailed examination of the echinate and microechinate sculpturing in relation to the size of pollen grains in 31 selected species of Asteraceae belonging to the subfamilies Barnadesioideae, Mutisioideae, Carduoideae and Asteroideae. The aims were to recognize sculpturing patterns, under LM and SEM, within large and small pollen of both basal and derived species and to explore the features that could have taxonomic value to apply in palynological disciplines. The detailed examination of the exine surface showed both the relevance and limits of sculptural patterns for taxonomy. Under LM, the microechinate sculpture gave little taxonomic information, whereas in the echinate sculpture, three exine types and two subtypes were recognized. Type I included microechinate exine, which is commonly present in large pollen grains of the basal lineages. Types II (subtypes IIa and IIb) and III included echinate and smaller pollen grains. In these types, spines were always regularly arranged and, were characterized by the length, shape, tip, perforations and distribution. Type IIa included more or less conical spines usually with a distended base, less than 4 µm in length, present in species of different tribes like Astereae, Eupatorieae, Helenieae, Gnaphalieae, Senecioideae and Heliantheae to a lesser extent. Type IIb includes slender spines with narrower bases, longer than 4 µm, present in species of Coreopsideae, Heliantheae, Tageteae and Eupatorieae to a lesser extent. Type III included spines with swollen base, blunt tip and perforations over their entire surface. This type was present in only one of the basal species-Carduus thoermeri-and in one species of the derived tribe Helenieae, Gaillardia megapotamica. Probably, this is due to evolutionary convergence.

  16. Influence of sampling properties of fast-waveform digitizers on neutron−gamma-ray, pulse-shape discrimination for organic scintillation detectors

    International Nuclear Information System (INIS)

    Flaska, Marek; Faisal, Muhammad; Wentzloff, David D.; Pozzi, Sara A.

    2013-01-01

    One of the most important questions to be answered with regard to digital pulse-shape discrimination (PSD) systems based on organic scintillators is: What sampling properties are required for a fast-waveform digitizer used for digitizing neutron/gamma-ray pulses, while an accurate PSD is desired? Answering this question is the main objective of this paper. Specifically, the paper describes the influence of the resolution and sampling frequency of a waveform digitizer on the PSD performance of organic scintillators. The results presented in this paper are meant to help the reader choosing a waveform digitizer with appropriate bit resolution and sampling frequency. The results presented here show that a 12-bit, 250-MHz digitizer is a good choice for applications that require good PSD performance. However, when more accurate PSD performance is the main requirement, this paper presents PSD figures of merit to qualify the impact of further increasing either sampling frequency or resolution of the digitizer

  17. Microanalysis of pictorial layers in polychrome sculptures

    International Nuclear Information System (INIS)

    Mendoza Cuevas, Ariadna

    2008-01-01

    Cross section samples from polychrome wood sculpture are analyzed by optical microscopy, the nuclear techniques: micro X Ray Fluorescence, micro Proton induced Xray Emission coupled with Rutherford Backscattering and the traditional method by Scanning Electronic Microscopy with Energy Dispersive Xray fluorescence detection (SEMEDX) microanalytical methods. Special emphasis is dedicated to mXRF, a novel advanced technique developed thanks to the last achievements of the Xray optics that can be available by modifying conventional laboratory XRF spectrometer, representing an alternative to the traditional and expensive SEMEDX stratigraphic analysis of pictorial works. The results are compared with respect to spatial resolution to differentiate pictorial layer structure and elemental sensitivity. Number of layer, relative position of layer, layer thickness and chemical composition of pigments are determined in the characterization of valuable polychromes of once church San Juan de Letrán in order to obtain information about their “material history” that should contribute to its provenance and attribution research. The pigments used in this artistic works were identified by their characteristic elements. The elemental distribution maps obtained by the used nuclear techniques precisely reproduced microphotographies obtained by means of Light Microscopy. (author)

  18. An Efficient Digital Pulse Shape Discrimination Technique for Scintillation Detectors Based on FPGA

    International Nuclear Information System (INIS)

    Kamel, M.S.

    2014-01-01

    Different techniques for pulse discrimination (PSD) of the scintillation pulses have been developed. The PSD of scintillation pulese can been used in several applications as Positron Emission Topography (PET) system. Each technique analyzes the resulting pulses from the absorption of radiation in the scintillation pulses were filtered and digitized then it is captured using DAQ, and it sent to the host computer for processing. The spatial resolution of images that generated in PET system can be improved by applying the proposed PSD. In this thesis various digital PSD techniques are proposed to discriminate the scintillation pulses. These techniques are based on discrete sine transform (DST). discrete cosine transform (DCT). Discrete hartley transform (DHT), Discrete Goertzel transform (DGT),and principal component analysis (PCA). Then the output coefficients of the discrete transforms are classified using one of the following classifiers T-test,tuned, or support vector machine (SVM).

  19. Real-time digital control of plasma position and shape on the TEXTOR tokamak

    International Nuclear Information System (INIS)

    Mitri, Mikhael

    2009-01-01

    Beside the objective of contributing to the controlled thermonuclear fusion research and ultimately the development of a fusion based power plant, the main objectives of the thesis are a substantial improvement of plasma vertical position control and plasma shape control as well as a better understanding of formerly unexplained effects, e.g. disturbance fields. As for the vertical position control, a deep analysis has to be undertaken to identify the problem sources. Accurate control of the plasma position is very difficult to achieve. This is mainly due to the complexity of the tokamak and the difficulty in measuring or modelling all relevant discharge variables. Any models would be highly nonlinear and time varying. Thus, for simulation and controller design, a simplified, but nevertheless accurate model has to be developed, based on physics and measured data of the process. Furthermore, the quality of the measured position has to be improved by using new inductive sensors, integrators, and hardware. The integration drift problem has to be analysed and resolved by developing a drift-free integration method. Concerning the shape control, a better understanding of the relation between the stray fields and the iron core saturation is required. Furthermore, the influence on the plasma elongation has to be determined. Upon this, a shape compensation algorithm has to be developed accordingly. The accuracy of the shape control has to be better than 1%. (orig.)

  20. Sub-wavelength antireflection coatings from nanostructure sculptured thin films

    International Nuclear Information System (INIS)

    Schubert, E.

    2007-01-01

    Nanostructure sculptured thin films from SiO 2 are grown on quartz substrates by ion beam sputter deposition using rotating substrate motion accommodated to an oblique angle of incidence for the particle flux. Structural peculiarities of sculptured thin films have an intriguing impact on the optical response upon reflection of light with different wavelengths. The reflectivity of quartz substrates coated with SiO 2 sub-wavelength nanostructures is simulated by means of effective medium theory and antireflection is predicted for the deep ultraviolet spectral region. Spectroscopic ellipsometry and reflectivity measurements are performed on SiO 2 sculptured thin films and antireflection near λ = 193 nm is found. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  1. Waiting for Art: The Experience of Real Time in Sculpture

    Directory of Open Access Journals (Sweden)

    Elizabeth Buhe

    2011-05-01

    Full Text Available Why and how does some contemporary art make us wait, and why does the beholder choose to stay? This study seeks to answer this question by exploring what happens to the viewer while waiting in front of a “time sculpture,” a term coined here to mean a three-dimensional artwork that is dynamic over a set period of time. Through an analysis of select works by artists Anish Kapoor, Amelia Whitelaw, Michael Sailstorfer, and Roman Signer, the article posits that while in front of these time sculptures, the viewer experiences an anxiety of waiting and temporal confusion that glues him to the spot. Ultimately, by drawing upon Henri Bergson’s concept of duration, the essay suggests that the viewership of time sculpture allows for a heightened state of perception. Normal 0 false false false EN-US X-NONE X-NONE

  2. THE DANCING SCULPTURES OF THE 19TH CENTURY EUROPEAN ART

    Directory of Open Access Journals (Sweden)

    Sibel ALMELEK ISMAN

    2015-04-01

    Full Text Available Dance has been an indispensable element of human life for centuries. Painters and sculptors have created the dynamism of dance steps either on the canvas or stone with the same excitement. Charits, Nymphs, Bacchantes and Satyrs, the Greek and Roman mythological figures who attract attention with their dances have been a source of inspiration for artists. In this research, the dancing sculptures of the 19th century which is an interesting period in European art because of its witnessing of long term styles like Neoclassicism and Romanticism and short term movements such as Realism and Impressionism are examined. Examples of sculptures which brings dance to life before and after the 19th century have also been mentioned. The likenesses as well as dissimilarities in the way the arts of painting and sculpture approach to the theme of dance has been briefly evaluated.

  3. A Virtual Steel Sculpture for Structural Engineering Education: Development and Initial Findings

    Science.gov (United States)

    Dib, Hazar Nicholas; Adamo-Villani, Nicoletta

    2016-01-01

    We describe the development and evaluation of a virtual steel sculpture for engineering education. A good connection design requires the engineer to have a solid understanding of the mechanics and steel behavior. To help students better understand various connection types, many schools have acquired steel sculptures. A steel sculpture is a…

  4. Sculpture africaine. Blessures et altérité

    Directory of Open Access Journals (Sweden)

    Gaetano Speranza

    2009-03-01

    Full Text Available Au delà de la notion de “blessure” relative à l’objet, l’auteur s’attache aux traumatismes culturels résultant de la rencontre entre la sculpture africaine et le monde occidental. Un exemple particulier est celui des instruments de musique ethnographiques, dont la restauration est souvent tributaire des conceptions occidentales.Beyond the notion of « injury » for the object, the author dwells on cultural traumatisms resulting from the meeting between African sculpture and the western world. A particular example is the one of ethnographical musical instruments for which restoration is often tributary of western conceptions.

  5. Compact multimode fiber beam-shaping system based on GPU accelerated digital holography.

    Science.gov (United States)

    Plöschner, Martin; Čižmár, Tomáš

    2015-01-15

    Real-time, on-demand, beam shaping at the end of the multimode fiber has recently been made possible by exploiting the computational power of rapidly evolving graphics processing unit (GPU) technology [Opt. Express 22, 2933 (2014)]. However, the current state-of-the-art system requires the presence of an acousto-optic deflector (AOD) to produce images at the end of the fiber without interference effects between neighboring output points. Here, we present a system free from the AOD complexity where we achieve the removal of the undesired interference effects computationally using GPU implemented Gerchberg-Saxton and Yang-Gu algorithms. The GPU implementation is two orders of magnitude faster than the CPU implementation which allows video-rate image control at the distal end of the fiber virtually free of interference effects.

  6. Origin and implications of non-radial Imbrium Sculpture on the Moon.

    Science.gov (United States)

    Schultz, Peter H; Crawford, David A

    2016-07-21

    Rimmed grooves, lineations and elongate craters around Mare Imbrium shape much of the nearside Moon. This pattern was coined the Imbrium Sculpture, and it was originally argued that it must have been formed by a giant oblique (~30°) impact, a conclusion echoed by later studies. Some investigators, however, noticed that many elements of the Imbrium Sculpture are not radial to Imbrium, thereby implicating an endogenic or structural origin. Here we use these non-radial trends to conclude that the Imbrium impactor was a proto-planet (half the diameter of Vesta), once part of a population of large proto-planets in the asteroid belt. Such independent constraints on the sizes of the Imbrium and other basin-forming impactors markedly increase estimates for the mass in the asteroid belt before depletion caused by the orbital migration of Jupiter and Saturn. Moreover, laboratory impact experiments, shock physics codes and the groove widths indicate that multiple fragments (up to 2% of the initial diameter) from each oblique basin-forming impactor, such as the one that formed Imbrium, should have survived planetary collisions and contributed to the heavy impact bombardment between 4.3 and 3.8 billion years ago.

  7. Effects of Photography on Acquisition of Sculpture Skills among ...

    African Journals Online (AJOL)

    The study investigated the effects of photography on acquisition of sculpture skills among Junior Secondary School Students in Osun State. Forty students were randomly selected from two schools. The two schools were purposefully selected from fifty secondary schools in Ife Central Local Government Council Area of Osun ...

  8. The Eco-Sculpture Assignment: Using Art to Scaffold Metacognition

    Science.gov (United States)

    Polegato, Rosemary

    2014-01-01

    The Eco-Sculpture Assignment demonstrates that art may be used as a conduit to scaffold metacognition in marketing courses. Theoretical underpinnings are drawn from the literature on pedagogy used in general, marketing, and art education contexts. The assignment is described in detail, followed by examples of learner response that illustrate…

  9. Sculpture: Creative Designs with Modern Materials (Tentative Course Outline).

    Science.gov (United States)

    Dubocq, Edward R.

    This document reports on a course in comprehension and application of various techniques of sculpture and collage, using a contemporary point of view. Students will work with contemporary materials such as wood, metals, plaster, plastics, styrofoam, and many other cardboard basic materials suitable for creative design products. This unit will…

  10. 37 CFR 202.10 - Pictorial, graphic, and sculptural works.

    Science.gov (United States)

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Pictorial, graphic, and... Pictorial, graphic, and sculptural works. (a) In order to be acceptable as a pictorial, graphic, or... utility or design patent will not affect the registrability of a claim in an original work of pictorial...

  11. Afterword: Victorian Sculpture for the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    David J. Getsy

    2016-06-01

    Full Text Available Commenting on the directions proposed by this issue of '19', the afterword discusses the broad trends in twenty-first century studies of Victorian sculpture and the opportunity for debate arising from the first attempt at a comprehensive exhibition.

  12. Ken Okoli's absracted landscape sculptures: The Zaria influence ...

    African Journals Online (AJOL)

    In art history scholarship the study of landscape has always been focused on the representation of beautiful sceneries in painting. Most of the attempt to represent landscape in relief sculpture has also been centered on the representation of human figures, animal forms, and generally on decorative patterns which form the ...

  13. NATURE AND SCULPTURE IN THE CREATION OF AFRICAN ...

    African Journals Online (AJOL)

    sculptural images of African gods and other handicrafts have also been quite vocal. The combination of these .... architectural perspective, or as the representation of domicile structures, we may say those types of setting .... Nigerian theatre had evolved three noticeable genres with the full influence of European technical ...

  14. TRENDS IN OWO TRADITIONAL SCULPTURES: 1995 – 2010 ...

    African Journals Online (AJOL)

    HON DEJI

    techniques and styles of Owo traditional sculptures, their resemblances and relationship with. Benin and Ife ... titles, socials, cults, street names, music, dance and royal costumes etcetera propelled, rekindled and influenced the ... These trees are very good for various types of carving such as veranda posts, doors, pillars ...

  15. Digital Morphing Wing: Active Wing Shaping Concept Using Composite Lattice-Based Cellular Structures.

    Science.gov (United States)

    Jenett, Benjamin; Calisch, Sam; Cellucci, Daniel; Cramer, Nick; Gershenfeld, Neil; Swei, Sean; Cheung, Kenneth C

    2017-03-01

    We describe an approach for the discrete and reversible assembly of tunable and actively deformable structures using modular building block parts for robotic applications. The primary technical challenge addressed by this work is the use of this method to design and fabricate low density, highly compliant robotic structures with spatially tuned stiffness. This approach offers a number of potential advantages over more conventional methods for constructing compliant robots. The discrete assembly reduces manufacturing complexity, as relatively simple parts can be batch-produced and joined to make complex structures. Global mechanical properties can be tuned based on sub-part ordering and geometry, because local stiffness and density can be independently set to a wide range of values and varied spatially. The structure's intrinsic modularity can significantly simplify analysis and simulation. Simple analytical models for the behavior of each building block type can be calibrated with empirical testing and synthesized into a highly accurate and computationally efficient model of the full compliant system. As a case study, we describe a modular and reversibly assembled wing that performs continuous span-wise twist deformation. It exhibits high performance aerodynamic characteristics, is lightweight and simple to fabricate and repair. The wing is constructed from discrete lattice elements, wherein the geometric and mechanical attributes of the building blocks determine the global mechanical properties of the wing. We describe the mechanical design and structural performance of the digital morphing wing, including their relationship to wind tunnel tests that suggest the ability to increase roll efficiency compared to a conventional rigid aileron system. We focus here on describing the approach to design, modeling, and construction as a generalizable approach for robotics that require very lightweight, tunable, and actively deformable structures.

  16. Non-destructive Investigation of "The Violinist" a Lead Sculpture by Pablo Gargallo, Using the Neutron Imaging Facility NEUTRA in the Paul Scherrer Institute

    Science.gov (United States)

    Masalles, Alex; Lehmann, Eberhard; Mannes, David

    The Violinist (1920), the only sculpture made by Gargallo using lead sheet and wood, is being corroded by carbonation, most probably due to the organic vapours released by the wood inside, a material not chemically compatible with lead. Hydrogen plasma has been tested and proved to be an effective treatment meaning that the sculpture has to be dismantled in order to give the plasma gas access to the lead carbonate crusts on the inner surface of the lead sheet. Prior to dismantling, a complete exploration and diagnosis of this lead sculpture has been carried out through neutron imaging at the Paul Scherrer Institute. This non-destructive technique has produced different sets of images including radiography, tomography and 3D reconstruction. Despite the presence of a core made of an organic material such as wood, the digital processing of the images and their in depth visual analysis have yielded new three-dimensional information of inaccessible details of the sculpture, allowing us to assess its present state of conservation and the manufacturing technique and materials used by the artist. The results presented in this article highlight how information from neutron imaging can be of great value when it comes to set the strategies for future conservation treatment

  17. The Golden Beauty: Brain Response to Classical and Renaissance Sculptures

    Science.gov (United States)

    Di Dio, Cinzia; Macaluso, Emiliano; Rizzolatti, Giacomo

    2007-01-01

    Is there an objective, biological basis for the experience of beauty in art? Or is aesthetic experience entirely subjective? Using fMRI technique, we addressed this question by presenting viewers, naïve to art criticism, with images of masterpieces of Classical and Renaissance sculpture. Employing proportion as the independent variable, we produced two sets of stimuli: one composed of images of original sculptures; the other of a modified version of the same images. The stimuli were presented in three conditions: observation, aesthetic judgment, and proportion judgment. In the observation condition, the viewers were required to observe the images with the same mind-set as if they were in a museum. In the other two conditions they were required to give an aesthetic or proportion judgment on the same images. Two types of analyses were carried out: one which contrasted brain response to the canonical and the modified sculptures, and one which contrasted beautiful vs. ugly sculptures as judged by each volunteer. The most striking result was that the observation of original sculptures, relative to the modified ones, produced activation of the right insula as well as of some lateral and medial cortical areas (lateral occipital gyrus, precuneus and prefrontal areas). The activation of the insula was particularly strong during the observation condition. Most interestingly, when volunteers were required to give an overt aesthetic judgment, the images judged as beautiful selectively activated the right amygdala, relative to those judged as ugly. We conclude that, in observers naïve to art criticism, the sense of beauty is mediated by two non-mutually exclusive processes: one based on a joint activation of sets of cortical neurons, triggered by parameters intrinsic to the stimuli, and the insula (objective beauty); the other based on the activation of the amygdala, driven by one's own emotional experiences (subjective beauty). PMID:18030335

  18. Documentation and dissemination of the sculptural elements of Canada's Parliamentary Buildings: Methodology development and evolution, a case study

    Directory of Open Access Journals (Sweden)

    C. Ouimet

    2015-08-01

    Full Text Available Parliament Hill consists of four historic gothic revival buildings, which form part of the Parliament Buildings National Historic Site of Canada in the National Capital of Ottawa. There are more than 2000 masonry sculptural elements throughout the four buildings. Three of the buildings are in the middle of multi-year rehabilitation projects. Extensive Heritage Documentation is being undertaken to support various activities and conservation teams throughout the interior and exterior of the buildings while also serving as a key posterity records. One of the significant heritage documentation projects is the 3D digitization of the 2000+ heritage character defining sculptural elements. The Heritage Conservation Directorate (HCD of Public Works and Government Services Canada (PWGSC was tasked by the Parliamentary Precinct Branch (PPB of PWGSC to document these character defining elements. The sculptures vary in size from as small as 100mm in width to up to 2 meters in size. This project is in its third year and much has been learned and researched about the most appropriate and efficient means by which to document these elements. Although a methodology was in place to document the sculptures at the inception of the project, it has gone through several iterations in order to improve the gathered data, and in turn increase the efficiency, quality and speed of data acquisition. This paper will describe the evolution of the methodology, as well as the rationale for the alterations in technique. With over 600 of the approximate 2000 (heritage character defining sculptural elements captured to date, the project is entering a critical phase where an efficient and effective method for sharing and disseminating the information to a wide audience is being explored and evaluated. The end result is intended to allow the client (PPB and the general public a way to look at and interactively manipulate the viewpoint of each digital model. This will provide a unique

  19. Documentation and dissemination of the sculptural elements of Canada's Parliamentary Buildings: Methodology development and evolution, a case study

    Science.gov (United States)

    Ouimet, C.; Gregg, J.; Kretz, S.; Chandler, C.; Hayes, J.

    2015-08-01

    Parliament Hill consists of four historic gothic revival buildings, which form part of the Parliament Buildings National Historic Site of Canada in the National Capital of Ottawa. There are more than 2000 masonry sculptural elements throughout the four buildings. Three of the buildings are in the middle of multi-year rehabilitation projects. Extensive Heritage Documentation is being undertaken to support various activities and conservation teams throughout the interior and exterior of the buildings while also serving as a key posterity records. One of the significant heritage documentation projects is the 3D digitization of the 2000+ heritage character defining sculptural elements. The Heritage Conservation Directorate (HCD) of Public Works and Government Services Canada (PWGSC) was tasked by the Parliamentary Precinct Branch (PPB) of PWGSC to document these character defining elements. The sculptures vary in size from as small as 100mm in width to up to 2 meters in size. This project is in its third year and much has been learned and researched about the most appropriate and efficient means by which to document these elements. Although a methodology was in place to document the sculptures at the inception of the project, it has gone through several iterations in order to improve the gathered data, and in turn increase the efficiency, quality and speed of data acquisition. This paper will describe the evolution of the methodology, as well as the rationale for the alterations in technique. With over 600 of the approximate 2000 (heritage character defining) sculptural elements captured to date, the project is entering a critical phase where an efficient and effective method for sharing and disseminating the information to a wide audience is being explored and evaluated. The end result is intended to allow the client (PPB) and the general public a way to look at and interactively manipulate the viewpoint of each digital model. This will provide a unique opportunity

  20. Spectrally shaped DP-16QAM super-channel transmission with multi-channel digital back-propagation.

    Science.gov (United States)

    Maher, Robert; Xu, Tianhua; Galdino, Lidia; Sato, Masaki; Alvarado, Alex; Shi, Kai; Savory, Seb J; Thomsen, Benn C; Killey, Robert I; Bayvel, Polina

    2015-02-03

    The achievable transmission capacity of conventional optical fibre communication systems is limited by nonlinear distortions due to the Kerr effect and the difficulty in modulating the optical field to effectively use the available fibre bandwidth. In order to achieve a high information spectral density (ISD), while simultaneously maintaining transmission reach, multi-channel fibre nonlinearity compensation and spectrally efficient data encoding must be utilised. In this work, we use a single coherent super-receiver to simultaneously receive a DP-16QAM super-channel, consisting of seven spectrally shaped 10GBd sub-carriers spaced at the Nyquist frequency. Effective nonlinearity mitigation is achieved using multi-channel digital back-propagation (MC-DBP) and this technique is combined with an optimised forward error correction implementation to demonstrate a record gain in transmission reach of 85%; increasing the maximum transmission distance from 3190 km to 5890 km, with an ISD of 6.60 b/s/Hz. In addition, this report outlines for the first time, the sensitivity of MC-DBP gain to linear transmission line impairments and defines a trade-off between performance and complexity.

  1. a Target Aware Texture Mapping for Sculpture Heritage Modeling

    Science.gov (United States)

    Yang, C.; Zhang, F.; Huang, X.; Li, D.; Zhu, Y.

    2017-08-01

    In this paper, we proposed a target aware image to model registration method using silhouette as the matching clues. The target sculpture object in natural environment can be automatically detected from image with complex background with assistant of 3D geometric data. Then the silhouette can be automatically extracted and applied in image to model matching. Due to the user don't need to deliberately draw target area, the time consumption for precisely image to model matching operation can be greatly reduced. To enhance the function of this method, we also improved the silhouette matching algorithm to support conditional silhouette matching. Two experiments using a stone lion sculpture of Ming Dynasty and a potable relic in museum are given to evaluate the method we proposed. The method we proposed in this paper is extended and developed into a mature software applied in many culture heritage documentation projects.

  2. ARTISTIC AND PRODUCTION FEATURES OF PORCELAIN SCULPTURE BY AUGUST SPIESS

    Directory of Open Access Journals (Sweden)

    Екатерина Сергеевна Хмельницкая

    2014-02-01

    Full Text Available The article deals with the identification and attribution of artistic production and features of porcelain sculpture created by the chief scultor of the Imperial Porcelain Factory in St. Petersburg August K. Spiess . Porcelain through creativity of Spies become so amazingly diverse, as it used to be in the XVIII century . Creative heritage of A. Spiess could be identified as a phenomenon that naturally associated with the broader social and cultural processes , typical for Russian art of the second half of the XIX century. However , in contrast to the next generation of sculptors , Spies activity does not go beyond the existence of porcelain production , and the sculptor has not sought to create works that can approve a porcelain sculpture in the eyes of a higher status.DOI: http://dx.doi.org/10.12731/2218-7405-2014-1-6

  3. Typical conservation problems of polychrome wooden sculptures in Slovenia

    Directory of Open Access Journals (Sweden)

    Martina Vuga

    2015-01-01

    Full Text Available The Slovene ethnic territory lies at the contact of Italian and German cultural influences, which can also be traced in gilded works of art. The majority of wooden Gothic art heritage has been lost for good, but a great number of wooden "golden altars" from the 17th century and large 18th century baroque altarpieces with outstanding sculptures survive. Conservators-restorers face great problems resulting from repeated restoration interventions of a great deal of these works of art. The paper describes a recent treatment undertaken at the National Gallery of Slovenia of an 18th century water gilded sculpture from no more existing altar, which was subsequently and typically overpainted several times. The case study is used to illustrate the problems encountered in overpaint removal from gilded areas.

  4. Metal corrosion in polychrome baroque lead sculptures: a case study

    OpenAIRE

    Faria,Dalva L. A. de; Puglieri,Thiago S.; Souza,Luiz Antonio C.

    2013-01-01

    Polychrome lead sculptures from Oratory Museum in Ouro Preto (Minas Gerais, Brazil) kept inside a glass showcase were severely degraded. The formed corrosion products were analyzed by X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray fluorescence (EDX) and Raman microscopy and proved to be mostly Pb carbonates and formates. Although carbonate is a very common finding in Pb atmospheric corrosion, Pb formates ...

  5. Rock Engravings and Sculptures of North Guwahati, Assam

    Directory of Open Access Journals (Sweden)

    Dwipen Bezbaruah

    2016-02-01

    Full Text Available Evidences of rock engravings and sculptures, in Assam, are predominantly found to occur in the vicinity of the temples. Incidence of images of Gods and Goddesses, faunal and floral motif are invariably more. Apart from these, some geometric designs are also perceived. Such tangible archaeological heritages are considered important evidences for understanding the past in a more meaningful way. Therefore, it is pertinent to systematically document these sites and the remains before natural and anthropogenic obliteration. The objective of the present paper is to record and document the rock engravings and sculptures observed in the archaeological sites, namely Dirgheswari, Aswakranta, Manikarneswar, Rudreswar and Kanai Boroshi bowa of North Guwahati in Kamrup district, Assam, which are protected and preserved by the Directorate of Archaeology, Assam and to understand the archaeological context of the sites and their remains. The data for the present paper have been collected through field visit and Exploration was conducted in dry and winter season. The findings of the present work comprises of some sculptures of Ganesa, Yama, Sage, Kali, deities, bull without head, human figures, broken piece of a tiger, remains of door frame or pillar and shrines. Series of dot marks, cut marks, inscription, image of Shiva, foot impression, chess board, square, bow, signs, female figurine, and elephant engravings constitute the rock engravings observed in the area.

  6. External-beam PIXE analysis of small sculptures

    Energy Technology Data Exchange (ETDEWEB)

    Gyodi, I.; Demeter, I.; Hollos-Nagy, K.; Kovacs, I.; Szokefalvi-Nagy, Z. E-mail: sznagy@rmki.kfki.hu

    1999-04-02

    Non-destructive analysis of precious art objects is an important tool to solve provenance problems or to facilitate restoration. External beam PIXE analysis is one of the most powerful and popular methods used in this respect. The paper summarises the external beam PIXE set-up at the Accelerator Laboratory in Budapest, and two selected applications are described. Different parts of a small Cambodian metal sculpture probably made in the 11th century were analysed. It was observed that the sculpture was composed of an iron core and an outer bronze shell. This sculptural technique was well known in the Middle-East but no indication has been found about its use in the Far-East, yet. Before its restoration paint traces on a wooden relief of St. Jerome made by an unknown artist in about 1600 were analysed. Different white and red paints were distinguished at selected points and the presence of titanium on a certain part of the relief was attributed to a repainting in modern times.

  7. Introduction to British Sculpture Abroad in the 1960s

    Directory of Open Access Journals (Sweden)

    Jon Wood

    2016-07-01

    Full Text Available In the 1960s, British sculpture enjoyed a complex transitional life, taking on a new, bold, and increasingly internationalized profile, at the very same time that its forms and meanings were being challenged and contested. Both in Britain and beyond its shores, sculpture experienced substantial reorientation at the same time as it developed a rich and complicated “import” and “export” life, conceptually, commercially, and curatorially. When “Sculpture” was “British” and “Abroad”, its “abroad-ness” was not always so explicitly visible, since its forms and concerns frequently chimed with sensibilities and approaches that were emerging elsewhere too, whether they were figurative or abstract, Constructivist or Pop. At the same time, when sculpture was being displayed in Britain, whether in terms of groups, schools, and/or recent tendencies, it was increasingly described as “British Sculpture”. Visual evidence of foreign impact and exchange gradually emerged at the same time as this national and generational trope became a cultural identifier on a broader cultural landscape.

  8. Comparative study of various pixel photodiodes for digital radiography: Junction structure, corner shape and noble window opening

    Science.gov (United States)

    Kang, Dong-Uk; Cho, Minsik; Lee, Dae Hee; Yoo, Hyunjun; Kim, Myung Soo; Bae, Jun Hyung; Kim, Hyoungtaek; Kim, Jongyul; Kim, Hyunduk; Cho, Gyuseong

    2012-05-01

    Recently, large-size 3-transistors (3-Tr) active pixel complementary metal-oxide silicon (CMOS) image sensors have been being used for medium-size digital X-ray radiography, such as dental computed tomography (CT), mammography and nondestructive testing (NDT) for consumer products. We designed and fabricated 50 µm × 50 µm 3-Tr test pixels having a pixel photodiode with various structures and shapes by using the TSMC 0.25-m standard CMOS process to compare their optical characteristics. The pixel photodiode output was continuously sampled while a test pixel was continuously illuminated by using 550-nm light at a constant intensity. The measurement was repeated 300 times for each test pixel to obtain reliable results on the mean and the variance of the pixel output at each sampling time. The sampling rate was 50 kHz, and the reset period was 200 msec. To estimate the conversion gain, we used the mean-variance method. From the measured results, the n-well/p-substrate photodiode, among 3 photodiode structures available in a standard CMOS process, showed the best performance at a low illumination equivalent to the typical X-ray signal range. The quantum efficiencies of the n+/p-well, n-well/p-substrate, and n+/p-substrate photodiodes were 18.5%, 62.1%, and 51.5%, respectively. From a comparison of pixels with rounded and rectangular corners, we found that a rounded corner structure could reduce the dark current in large-size pixels. A pixel with four rounded corners showed a reduced dark current of about 200fA compared to a pixel with four rectangular corners in our pixel sample size. Photodiodes with round p-implant openings showed about 5% higher dark current, but about 34% higher sensitivities, than the conventional photodiodes.

  9. Comparative study of various pixel photodiodes for digital radiography: junction structure, corner shape and noble window opening

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Dong-Uk; Cho, Min-Sik; Lee, Dae-Hee; Yoo, Hyun-Jun; Kim, Myung-Soo; Bae, Jun-Hyung; Kim, Hyoung-Taek; Kim, Jong-Yul; Kim, Hyun-Duk; Cho, Gyu-Seong [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of)

    2012-05-15

    Recently, large-size 3-transistors (3-Tr) active pixel complementary metal-oxide silicon (CMOS) image sensors have been being used for medium-size digital X-ray radiography, such as dental computed tomography (CT), mammography and nondestructive testing (NDT) for consumer products. We designed and fabricated 50 μm x 50 μm 3-Tr test pixels having a pixel photodiode with various structures and shapes by using the TSMC 0.25-m standard CMOS process to compare their optical characteristics. The pixel photodiode output was continuously sampled while a test pixel was continuously illuminated by using 550-nm light at a constant intensity. The measurement was repeated 300 times for each test pixel to obtain reliable results on the mean and the variance of the pixel output at each sampling time. The sampling rate was 50 kHz, and the reset period was 200 msec. To estimate the conversion gain, we used the mean-variance method. From the measured results, the n-well/p-substrate photodiode, among 3 photodiode structures available in a standard CMOS process, showed the best performance at a low illumination equivalent to the typical X-ray signal range. The quantum efficiencies of the n+/p-well, n-well/p-substrate, and n+/p-substrate photodiodes were 18.5%, 62.1%, and 51.5%, respectively. From a comparison of pixels with rounded and rectangular corners, we found that a rounded corner structure could reduce the dark current in large-size pixels. A pixel with four rounded corners showed a reduced dark current of about 200 fA compared to a pixel with four rectangular corners in our pixel sample size. Photodiodes with round p-implant openings showed about 5% higher dark current, but about 34% higher sensitivities, than the conventional photodiodes.

  10. Comparative study of various pixel photodiodes for digital radiography: junction structure, corner shape and noble window opening

    International Nuclear Information System (INIS)

    Kang, Dong-Uk; Cho, Min-Sik; Lee, Dae-Hee; Yoo, Hyun-Jun; Kim, Myung-Soo; Bae, Jun-Hyung; Kim, Hyoung-Taek; Kim, Jong-Yul; Kim, Hyun-Duk; Cho, Gyu-Seong

    2012-01-01

    Recently, large-size 3-transistors (3-Tr) active pixel complementary metal-oxide silicon (CMOS) image sensors have been being used for medium-size digital X-ray radiography, such as dental computed tomography (CT), mammography and nondestructive testing (NDT) for consumer products. We designed and fabricated 50 μm x 50 μm 3-Tr test pixels having a pixel photodiode with various structures and shapes by using the TSMC 0.25-m standard CMOS process to compare their optical characteristics. The pixel photodiode output was continuously sampled while a test pixel was continuously illuminated by using 550-nm light at a constant intensity. The measurement was repeated 300 times for each test pixel to obtain reliable results on the mean and the variance of the pixel output at each sampling time. The sampling rate was 50 kHz, and the reset period was 200 msec. To estimate the conversion gain, we used the mean-variance method. From the measured results, the n-well/p-substrate photodiode, among 3 photodiode structures available in a standard CMOS process, showed the best performance at a low illumination equivalent to the typical X-ray signal range. The quantum efficiencies of the n+/p-well, n-well/p-substrate, and n+/p-substrate photodiodes were 18.5%, 62.1%, and 51.5%, respectively. From a comparison of pixels with rounded and rectangular corners, we found that a rounded corner structure could reduce the dark current in large-size pixels. A pixel with four rounded corners showed a reduced dark current of about 200 fA compared to a pixel with four rectangular corners in our pixel sample size. Photodiodes with round p-implant openings showed about 5% higher dark current, but about 34% higher sensitivities, than the conventional photodiodes.

  11. Ice sculpture in the Martian outflow channels

    Science.gov (United States)

    Lucchitta, B. K.

    1982-01-01

    Viking Orbiter and terrestrial satellite images are examined at similar resolution to compare features of the Martian outflow channels with features produced by the movement of ice on earth, and many resemblances are found. These include the anastomoses, sinuosities, and U-shaped cross profiles of valleys; hanging valleys; linear scour marks on valley walls; grooves and ridges on valley floors; and the streamlining of bedrock highs. Attention is given to the question whether ice could have moved in the Martian environment. It is envisaged that springs or small catastrophic outbursts discharged fluids from structural outlets or chaotic terrains. These fluids built icings that may have grown into substantial masses and eventually flowed like glaciers down preexisting valleys. An alternative is that the fluids formed rivers or floods that in turn formed ice jams and consolidated into icy masses in places where obstacles blocked their flow.

  12. Author's rights in the digital age: how Internet and peer-to-peer file sharing technology shape the perception of copyrights and copywrongs

    Directory of Open Access Journals (Sweden)

    Milijana Micunovic

    2016-01-01

    Full Text Available Author's rights and copyright law have gone through quite a few changes in the 'post-print' culture of binary systems, digital formations and techno-practices. Technological development supports new concept of author's rights by promoting free internet and digital market, as well as new contemporary experience of culture that is being rooted in digital technology, mass communication and the world of multimedia and virtuality. Though computer and digital technology have served both authors and users in various ways, they have also served as a very fertile ground for sharing copyrighted content thus leading to numerous copyright infringements and conflicts with the copyright law. The aim of this paper is to identify and analyze the ways in which computer and digital technology have given rise to new trends in the production (e.g. remix culture and consumption (e.g. peer-to-peer file sharing technology of culture, but also to determine how new forms of distribution, use and sharing of digital content changed and shaped the perception of authorship in the 21st century. In order to analyze the dynamic, nature and structure by which new digital and networking technologies are affecting the concept of authorship and author's rights and to test the consistency of previously established hypotheses, we conducted a survey amongst general public. Altogether 535 questionnaires were completed. Data was analyzed using SPSS tool and quantitative method of analysis. In the analysis special attention was given to both, the concept of authorship in the digital environment and the concept of peer-to-peer file sharing technology as not so new, but still very popular networked architecture for distributing, using and sharing digital content. Results have shown that most of the respondents use peer-to-peer file sharing technology to access, consume and/or share different cultural content (e.g. movies, music, books, etc. while violating the rights of copyright holders

  13. Simple, Inexpensive, and Rapid Approach to Fabricate Cross-Shaped Memristors Using an Inorganic-Nanowire-Digital-Alignment Technique and a One-Step Reduction Process.

    Science.gov (United States)

    Xu, Wentao; Lee, Yeongjun; Min, Sung-Yong; Park, Cheolmin; Lee, Tae-Woo

    2016-01-20

    A rapid, scalable, and designable approach to produce a cross-shaped memristor array is demonstrated using an inorganic-nanowire digital-alignment technique and a one-step reduction process. Two-dimensional arrays of perpendicularly aligned, individually conductive Cu-nanowires with a nanometer-scale Cux O layer sandwiched at each cross point are produced. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  14. Using Soft Sculpture Microfossils and Other Crafted Models to Teach Geoscience

    Science.gov (United States)

    Spinak, N. R.

    2017-12-01

    For the past 5 years, the International Ocean Discovery Program (IODP) has been using the author's sewn models of microfossils to help learners understand the shapes and design of these tiny fossils. These tactile objects make the study of ancient underwater life more tangible. Multiple studies have shown that interactive models can help many learners understand science. The Montessori and Waldorf education programs are based in large part on earlier insights into meeting these needs. The act of drawing has been an essential part of medical education. The STEAM (Science, Technology, Engineering, Arts and Math) movement has advocated for STEM supporters to recognize the inseparability of science and art. This presentation describes how the author's knitted or sewn models of microfossils incorporate art and design into geoscience education. The geoscience research and art processes used in developing and creating these educational soft sculptures will be described. In multiple entry points to science study, specific reciprocal benefits to boundary crossing among the arts and sciences for those who have primary talents in a particular area of study will be discussed. Geoscience education can benefit from using art and craft items such as models. Many websites now offer soft sculptures for biology study such as organs and germs (e.g. (https://www.giantmicrobes.com/us/main/nasty-germs). The Wortheim project involving community and crochet is another approach (http://crochetcoralreef.org/). These tactile artifacts give learners an entry-level experience with biology. Three dimensional models are multisensory. The enlarged manipulative microfossil models invite learners to make comparisons and gain insights when microscopes are not available or appropriate for the audience. Adding the physical involvement of creating a microfossil yourself increases the multi-sensory experience even further. Learning craft skills extends the cross-cutting concepts of the NGSS to a mutual

  15. Moving into Uncertainty: Sculpture with Three- to Five-Year-Olds

    Science.gov (United States)

    Wien, Carol Anne

    2008-01-01

    This article describes a six-month emergent curriculum project on sculpture in a Reggio-inspired program and the thinking behind teachers' decisions in supporting the children's developing ideas. ["Moving into Uncertainty: Sculpture with Three- to Five-Year-Olds" was written with Bobbi-Lynn Keating, Annette Coates, and Barbara Bigelow.

  16. Analysis of a Brazilian baroque sculpture using Raman spectroscopy and FT-IR.

    Science.gov (United States)

    Freitas, Renato P; Ribeiro, Iohanna M; Calza, Cristiane; Oliveira, Ana L; Felix, Valter S; Ferreira, Douglas S; Pimenta, André R; Pereira, Ronaldo V; Pereira, Marcelo O; Lopes, Ricardo T

    2016-02-05

    In this study, samples were taken from the sculpture of Our Lady of Sorrows and analyzed by Raman spectroscopy and FT-IR. This sculpture has been dated to the early eighteenth century. Samples were also examined using optical microscopy and Energy Dispersive Spectroscopy (EDS). Based on chemical analysis, the pigments vermilion [HgS], massicot [PbO] and azurite [Cu3(CO3)2(OH)2]were found in the sculpture polychrome. The results indicate that the green polychrome of the sculpture's mantle comes from the blending of massicot and azurite. Because the literature reports that the mantle of the Our Lady of Sorrows sculpture is blue, the mixing of these pigments results from a production error. The results also indicate the presence of Au in the sculpture, which indicates the originality of the piece. The results from this study helped restorers to choose the appropriate procedures for intervening in the sculpture and contributed to the knowledge about the manufacturing process of Brazilian baroque sculptures. Copyright © 2015 Elsevier B.V. All rights reserved.

  17. Analysis of a Brazilian baroque sculpture using Raman spectroscopy and FT-IR

    Science.gov (United States)

    Freitas, Renato P.; Ribeiro, Iohanna M.; Calza, Cristiane; Oliveira, Ana L.; Felix, Valter S.; Ferreira, Douglas S.; Pimenta, André R.; Pereira, Ronaldo V.; Pereira, Marcelo O.; Lopes, Ricardo T.

    2016-02-01

    In this study, samples were taken from the sculpture of Our Lady of Sorrows and analyzed by Raman spectroscopy and FT-IR. This sculpture has been dated to the early eighteenth century. Samples were also examined using optical microscopy and Energy Dispersive Spectroscopy (EDS). Based on chemical analysis, the pigments vermilion [HgS], massicot [PbO] and azurite [Cu3(CO3)2(OH)2] were found in the sculpture polychrome. The results indicate that the green polychrome of the sculpture's mantle comes from the blending of massicot and azurite. Because the literature reports that the mantle of the Our Lady of Sorrows sculpture is blue, the mixing of these pigments results from a production error. The results also indicate the presence of Au in the sculpture, which indicates the originality of the piece. The results from this study helped restorers to choose the appropriate procedures for intervening in the sculpture and contributed to the knowledge about the manufacturing process of Brazilian baroque sculptures.

  18. Stone sculptures of goddesses on the boats from Goa, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A; Kerkar, R.

    goddess panels. A few sculptures reflect influence of folk art traditions in Goa. On the basis of lion figures in a few sculptured panels indicate that these boat motifs must have been engraved during the Kadamba period (10 th - 13 th) when Goa witnessed...

  19. Go with the flow: conservation of a floating sculpture from 1961 made from glass fibre-reinforced polyester resin

    NARCIS (Netherlands)

    Beerkens, L.; Stigter, S.; van Oosten, T.; van Keulen, H.; Keneghan, B.; Egan, L.

    2008-01-01

    Marta Pan’s Sculpture flottante, Otterlo was commissioned by the Kröller-Müller Museum for a pond at the entrance of the new sculpture garden that opened in June 1961. The floating sculpture is made from glass fibre-reinforced polyester resin and is now coated with white paint layers. The top is

  20. 25 CFR 309.20 - What are examples of sculpture, carving, and pipes that are Indian products?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false What are examples of sculpture, carving, and pipes that... INTERIOR PROTECTION OF INDIAN ARTS AND CRAFTS PRODUCTS § 309.20 What are examples of sculpture, carving, and pipes that are Indian products? (a) Sculpture, carving, and pipes made by an Indian, including...

  1. Interlocked by nanoscale sculpturing: pure aluminum copper contacts (Conference Presentation)

    Science.gov (United States)

    Gerngross-Baytekin, Melike; Gerngross, Mark Daniel; Carstensen, Jürgen; Adelung, Rainer

    2017-06-01

    Connecting metals reliable with different corrosion potential is a well-known challenge. An extreme example are copper aluminum contacts. Galvanic corrosion occurs if the two different metals are in contact with each other and an electrolyte, the aluminum becomes susceptible to corrosion under current flow. Usually, antioxidant pastes containing metals are employed but create difficulties e.g. for fatigue resistant power electronic connections. The recently described process of nanoscale sculpturing [1] offers an alternative. Usually, if the surface of metals like aluminium are prepared they are just arbitrary cuts through the bulk. There is no optimization of the surface grain structure towards stability at all. Neither the crystalline facets in the grains are in their most stable orientation nor is the protective oxide shell the most stable one. The nanoscale sculpturing approach is carving out the most stable grains and planes by chemical or electrochemical treatment. The decisive trick is that the chemistry is targeting towards the instable oxide and not the metal. Aluminium sample surfaces including alloys like AA575 exhibit afterwards single crystalline surface facets covered with nanoscale stable oxide films. Galvanically deposited copper forms extremely reliable interlocked connections on top, even allowing for soldering on top of their surface.

  2. Vapor and liquid optical monitoring with sculptured Bragg microcavities

    Science.gov (United States)

    Oliva-Ramirez, Manuel; Gil-Rostra, Jorge; López-Santos, Maria Carmen; González-Elipe, Agustín R.; Yubero, Francisco

    2017-10-01

    Sculptured porous Bragg microcavities (BMs) formed by the successive stacking of columnar SiO2 and TiO2 thin films with a zig-zag columnar microstructure are prepared by glancing angle deposition. These BMs act as wavelength-dependent optical retarders. This optical behavior is attributed to a self-structuration of the stacked layers involving the lateral association of nanocolumns in the direction perpendicular to the main flux of particles during the multilayer film growth, as observed by focused ion beam scanning electron microscopy. The retardance of these optically active BMs can be modulated by dynamic infiltration of their open porosity with vapors, liquids, or solutions with different refractive indices. The tunable birefringence of these nanostructured photonic systems has been successfully simulated with a simple model that assumes that each layer within the BMs stack has uniaxial birefringence. The sculptured BMs have been incorporated as microfluidic chips for optical transduction for label-free vapor and liquid sensing. Several examples of the detection performance of these chips, working either in reflection or transmission configuration, for the optical monitoring of vapor and liquids of different refractive indices and aqueous solutions of glucose flowing through the microfluidic chips are described.

  3. Three dimensional computerized microtomography in the analysis of sculpture.

    Science.gov (United States)

    Badde, Aurelia; Illerhaus, Bernhard

    2008-01-01

    The Alte Nationalgalerie, Staatliche Museen zu Berlin (SMB) and the Federal Institute for Materials Research and Testing (BAM) tested the accomplishment of the three dimensional computerized microtomography (3D-microCT)-a new flat panel detector computerized tomography (CT) system at the BAM with extended energy range, with high voltage X-ray tubes (330 and 225 kV), with micrometer focal spot size and micrometer resolution and enlarged object size (up to 70 cm diameter)-for examining plaster statues. The high spatial and density resolution of the tomograph enable detailed insights into the individual work processes of the investigated cast plaster statues. While initiated in support of the conservation process, computed tomography (CT) analysis has assisted in revealing relative chronologies within the series of the cast works of art, thus serving as a valuable tool in the art-historical appraisal of the oeuvres. The image-processing systems visualize the voids and cracks within and the cuts through the original cast works. Internal structures, armoring, sculptural reworking as well as restorative interventions are virtually reconstructed. The authors are currently employing the 3D-microCT systems at the BAM into the detection of defects in Carrara marble sculpture. Microcracks, fractures, and material flaws are visualized at spatial resolution down to 10 microm. Computerized reconstruction of ultrasound tomography is verified by analyzing correlations in the results obtained from the complementary application of these two non-destructive testing (NDT) methods of diagnosis.

  4. Socio-Psychological Impact of Outdoor Sculptures in Nigeria Urban Cities

    Directory of Open Access Journals (Sweden)

    Allan Francis Ebunola Oladugbagbe

    2016-06-01

    Full Text Available One major element that finds expression at road intersections, parks, gardens, square and open spaces in the urban landscape are outdoor sculptures. Of great significance is the historical information they disseminate, the visual impressions they convey and the aesthetic value they add to the quality of the city. From 1960s and after the civil war, the uses of sculptures for embellishments in public places have increased tremendously in Nigeria. However, outdoor sculpture for the purpose of recreation and relaxation in our built environment has not been adequately addressed scholastically in Nigeria. This paper, therefore, focuses on the social values derivable from the use of sculpture in urban design and the losses that could accrue to the social system if not adequately managed. The values of these sculptures to the socio-psychological development of Nigerians and the beautification of the urban environment are equally emphasized. The study shows that incorporating sculptures into public places without doubt will heighten public appreciation and aesthetic perception and make Nigerian cities unique and vibrant.Keywords: Nigeria urban cities; socio-psychological impact; outdoor sculptures.

  5. Development of collection precedes targeted reaching: resting shapes of the hands and digits in 1-6-month-old human infants.

    Science.gov (United States)

    Sacrey, Lori-Ann R; Whishaw, Ian Q

    2010-12-06

    Hand shaping is an important part of many skilled hand movements and includes a number of hand shapes prominent amongst which is collection. In collection, the hand is held with the digits lightly closed and flexed. It occurs when the hand is at rest and it occurs as the hand is transported to a target in behaviors such as reaching for an object, crawling, and climbing a ladder. Collection also frequently precedes hand gestures associated with speaking. The development of collection in infancy has not been described but it might be predicted that collection should develop before grasping and reaching movements. The present study examines the development of collection and arm position during the first 6 months of infant development. Infants were filmed while awake and photographed while asleep and hand shape and the hands location relative to the torso was documented. Collection associated with a relaxed position of the arm became increasingly prominent over the first 4 weeks of life in both awake and sleeping infants. It replaces a clenched (spastic) fist that was typically held proximal to the upper torso. The results are discussed in relation to the idea that the development of collection is an important antecedent to other hand shaping movements, especially skilled movements of grasping and reaching. Copyright 2010 Elsevier B.V. All rights reserved.

  6. Applications of petrography and electron microprobe analysis to the study of Indian stone sculpture

    International Nuclear Information System (INIS)

    Newman, R.

    1992-01-01

    Examples of research on ancient Indian stone artefacts utilizing petrographic examination coupled with qualitative and quantitative electron beam microprobe analysis of specific minerals are described. Types of artefacts discussed include Gandharan schist sculptures, Pala dynasty phyllite and schist objects from eastern India. Hoysala sculptures from Karnataka state (southern India), and sandstone objects from northern India. In spite of the rich history of stone sculpture in the Indian subcontinent, characterization studies to date have been limited in scope, typically involving unprovenanced artefacts. The examples described point to areas in which more extensive research could produce useful information for the provenancing of artefacts. (author)

  7. Stèles et sculptures protohistoriques du Languedoc occidental

    OpenAIRE

    Gailledrat, Éric

    2017-01-01

    Fig. 1 : Carte de situation des sites mentionnés dans le texte Au regard d’autres régions méridionales, et plus précisément la Provence et le Languedoc oriental, l’ensemble culturellement cohérent que forment à l’âge du Fer les terres comprises entre les vallées de l’Hérault et du Lez au Nord, les Pyrénées au Sud, se caractérise par la relative indigence des documents matériels évoquant cultes et croyances situés hors de la sphère domestique (fig. 1). Le corpus des stèles, sculptures et autr...

  8. Sandscape - engaging people in Met Office science through sand sculpture

    Science.gov (United States)

    Liggins, Felicity; Dowell, Ellen; Wardley, Jamie; Jamieson, Claire

    2017-04-01

    In 2015, the Met Office's award-winning outreach programme, designed to inspire the next generation of scientists and engineers, delivered one of its most ambitious and creative activities to date. It explored how scientists and artists can come together to create an engaging experience for young people and families. This activity was called Sandscape. Sandscape is an interactive sand sculpture workshop exploring how weather and climate affect our health. Budding sand sculptors are shown how to fashion elaborate structures from sand and water - creating a landscape with bridges, skyscrapers, forests and factories. As they work, participants are encouraged by the scientists delivering the activity to reflect on what makes a healthy city, considering how the natural and built environments influence air quality and circulation and how this impacts our health. Topics discussed include urban heat islands, air pollution and dispersion modelling, pollen forecasting and predicting the wind-borne spread of animal diseases. Each hour long workshop culminates in a dramatic demonstration that uses dry ice to represent clean air circulating from mountains, along rivers and into cities. Here we present an overview of Sandscape, identify the strengths and challenges of such a collaborative, innovative and playful approach to public engagement and share the results of our evaluation. Sandscape was originally supported by the Met Office and the Wellcome Trust, and produced by Einstein's Garden in collaboration with the Met Office, scientists from the University of Exeter and sand sculptors from Sand in Your Eye. It was first presented in Einstein's Garden at Green Man festival 2015, an independent music and arts festival held annually in Wales, and has since been invited to run at the 2015 Bournemouth Arts By the Sea Festival and Teignmouth's TRAIL Sculpture Festival in the summer of 2016.

  9. Shape language - How people describe shapes and shape operations

    NARCIS (Netherlands)

    Wiegers, T.; Langeveld, L.H.; Vergeest, J.S.M.

    2001-01-01

    Many designers do not use CAD tools for shape ideation. They consider CAD systems not appropriate for the ideation phase. This research investigates how designers ideate shape, in particular which terms they use to exteriorize shape. The goal is to be able to propose digital tools that are useful

  10. Geometry of an inflated membrane in elliptic bulge tests: Evaluation of an ellipsoidal shape approximation by stereoscopic digital image correlation measurements.

    Science.gov (United States)

    Jayyosi, C; Bruyère-Garnier, K; Coret, M

    2017-10-01

    Elliptic bulge tests are conducted on liver capsule, a fibrous connective membrane, associated with a field measurement method to assess the global geometry of the samples during the tests. The experimental set up is derived from a previous experimental campaign of bulge tests under microscope. Here, a stereoscopic Digital Image Correlation (DIC) system is used to measure global parameters on the test and investigate some assumptions made on the testing conditions which could not been assessed with microscopic measurements. In particular, the assumption of an ellipsoidal shape of the inflated membrane is tested by comparing the actual sample shape measured by stereoscopic DIC with an idealized ellipsoidal shape. Results indicate that a rather constant gap exists between the idealized and actual position. The approximation in the calculation of a macroscopic strain through analytical modeling of the test is estimated here. The study of the liver capsule case shows that important differences can be observed in strain calculation depending on the method and assumptions taken. Therefore, analytical modeling of mechanical tests through ellipsoidal approximation needs to be carefully evaluated in every application. Here the field measurement allows assessing the validity of these modeling assumptions. Moreover, it gives precious details about the boundary conditions of the bulge test and revealed the heterogeneous clamping, highlighted by strain concentrations. Copyright © 2017 IPEM. Published by Elsevier Ltd. All rights reserved.

  11. Co-occurrence of linear and circular dichroism in chiral sculptured ZrO2 thin films

    Science.gov (United States)

    Muhammad, Zahir; Wali, Faiz; Song, Li

    2018-01-01

    Three dimensional chiral metamaterials, have unique helical shaped morphologies and periodically varying permittivity, possess inherent fascinatingly chiroptical activity in developing potential photonic applications. Herein, we demonstrate a systemic simulations of optical activity in chiral sculptured thin films (CSTFs) made of ZrO2 . In particular, a circular dichroism (CD) and linear dichroism (LD) are scrutinized for the proposed ZrO2 CSTFs. From the calculated differential absorption, LD and CD spectrum is computed using linear and circular polarized light beams respectively. The signated mode of different peaks for LD and CD is observed at different sweep angles with a large LD effect. Moreover, the CD diminishes at large sweep angle. This finding strongly indicates high potential of our proposed helical ZrO2 nanostructures as a perfect polarization converter. Simultaneously, optical remittance of different helical nanostructures are also compared.

  12. Real-time 3D shape measurement with digital stripe projection by Texas Instruments Micro Mirror Devices DMD

    Science.gov (United States)

    Frankowski, Gottfried; Chen, Mai; Huth, Torsten

    2000-03-01

    The fast, contact-free and highly precise shape measurement of technical objects is of key importance in the scientific- technological area as well as the area of practical measurement technology. The application areas of contact- free surface measurement extend across widely different areas, e.g., the automation of production processes, the measurement and inspection of components in microsystem technology or the fast 3D in-vivo measurement of human skin surfaces in cosmetics and medical technology. This paper describes methodological and technological possibilities as well as measurement technology applications for fast optical 3D shape measurements using micromirror-based high-velocity stripe projection. Depending on the available projector and camera facilities, it will be possible to shoot and evaluate compete 3D surface profiles within only a few milliseconds.

  13. Digital fast pulse shape and height analysis on cadmium-zinc-telluride arrays for high-flux energy-resolved X-ray imaging.

    Science.gov (United States)

    Abbene, Leonardo; Principato, Fabio; Gerardi, Gaetano; Bettelli, Manuele; Seller, Paul; Veale, Matthew C; Zambelli, Nicola; Benassi, Giacomo; Zappettini, Andrea

    2018-01-01

    Cadmium-zinc-telluride (CZT) arrays with photon-counting and energy-resolving capabilities are widely proposed for next-generation X-ray imaging systems. This work presents the performance of a 2 mm-thick CZT pixel detector, with pixel pitches of 500 and 250 µm, dc coupled to a fast and low-noise ASIC (PIXIE ASIC), characterized only by the preamplifier stage. A custom 16-channel digital readout electronics was used, able to digitize and process continuously the signals from each output ASIC channel. The digital system performs on-line fast pulse shape and height analysis, with a low dead-time and reasonable energy resolution at both low and high fluxes. The spectroscopic response of the system to photon energies below ( 109 Cd source) and above ( 241 Am source) the K-shell absorption energy of the CZT material was investigated, with particular attention to the mitigation of charge sharing and pile-up. The detector allows high bias voltage operation (>5000 V cm -1 ) and good energy resolution at moderate cooling (3.5% and 5% FWHM at 59.5 keV for the 500 and 250 µm arrays, respectively) by using fast pulse shaping with a low dead-time (300 ns). Charge-sharing investigations were performed using a fine time coincidence analysis (TCA), with very short coincidence time windows up to 10 ns. For the 500 µm pitch array (250 µm pitch array), sharing percentages of 36% (52%) and 60% (82%) at 22.1 and 59.5 keV, respectively, were measured. The potential of the pulse shape analysis technique for charge-sharing detection for corner/border pixels and at high rate conditions (250 kcps pixel -1 ), where the TCA fails, is also shown. Measurements demonstrated that significant amounts of charge are lost for interactions occurring in the volume of the inter-pixel gap. This charge loss must be accounted for in the correction of shared events. These activities are within the framework of an international collaboration on the development of energy

  14. [Model creation in art therapy. A sculpture project at a psychiatric clinic].

    Science.gov (United States)

    Erazo, N; van der Lee, T; Greil, W

    2000-01-01

    Therapeutic modelling has found little attention in the literature. For the first time, the present article reports about sculptural work in psychiatric art therapy. Since 1994 the Psychiatric Hospital Kilchberg/Zürich is carrying out a sculpture project, in which about 30 patients work with sand- or limestone for 2 1/2 hours daily, cared for by eight therapists and protected by detailed safety regulations. At the beginning and the end of each afternoon the patients stand in a circle to communicate inner mood and ideas about the work. An exposition at the end of the project gives the opportunity to demonstrate the sculptures to family, friends and clinical staff. Until now there have been only positive experiences, which speak in favour of a wider use of sculpture in psychiatric art therapy. Sculptural work stimulates the vitality of the patients, who are challenged to use their willpower adaptedly and rhythmically. Especially on patients with autodestructive tendencies sculptural work seems to exert a beneficial influence.

  15. A CAMAC unit for charge measuring and pulse shape recording based on a fast, 8-bit parallel analog-to-digital converter

    International Nuclear Information System (INIS)

    Kulka, Z.; Kreciejewski, M.; Nadachowski, M.

    1990-08-01

    A device designed mainly for measuring systems for testing parameters of some type of detectors used in the high energy physics is described. The device is one-module CAMAC unit. It is equipped in a fast, 8-bit parallel analog-to-digital converter ''flash''type with a gated integrator at the input and a static RAM (4096 x 8 bit) at the output. The device enables measurements of the charge in pulses from detectors or registration of the shape of these pulses. The construction, operation and parameters of the circuits of the device are described and the way of programming functions using CAMAC dataway is given. 8 refs., 9 figs. (author)

  16. Numerical Models for Exact Description of in-situ Digital In-Line Holography Experiments with Irregularly-Shaped Arbitrarily-Located Particles

    Directory of Open Access Journals (Sweden)

    Marc Brunel

    2015-04-01

    Full Text Available We present the development of a numerical simulator for digital in-line holography applications. In-line holograms of arbitrarily shaped and arbitrarily located objects are calculated using generalized Huygens-Fresnel integrals. The objects are 2D opaque or phase objects. The optical set-up is described by its optical transfer matrix. A wide variety of optical systems, involving windows, spherical or cylindrical lenses, can thus be taken into account. It makes the simulator applicable for design and description of in situ experiments. We discuss future applications of this simulator for detection of nanoparticles in droplets, or calibration of airborne instruments that detect and measure ice crystals in the atmosphere.

  17. Digital, three-dimensional average shaped atlas of the heliothis virescens brain with integrated gustatory and olfactory neurons

    Directory of Open Access Journals (Sweden)

    Pål Kvello

    2009-10-01

    Full Text Available We use the moth Heliothis virescens as model organism for studying the neural network involved in chemosensory coding and learning. The constituent neurons are characterised by intracellular recordings combined with staining, resulting in a single neuron identified in each brain preparation. In order to spatially relate the neurons of different preparations a common brain framework was required. We here present an average shaped atlas of the moth brain. It is based on 11 female brain preparations, each stained with a fluorescent synaptic marker and scanned in confocal laser-scanning microscope. Brain neuropils of each preparation were manually reconstructed in the computer software AMIRA, followed by generating the atlas using the Iterative Shape Average Procedure. To demonstrate the application of the atlas we have registered two olfactory and two gustatory interneurons, as well as the axonal projections of gustatory receptor neurons into the atlas, visualising their spatial relationships. The olfactory interneurons, showing the typical morphology of inner-tract antennal lobe projection neurons, projected in the calyces of the mushroom body and laterally in the protocerebral lobe. The two gustatory interneurons, responding to sucrose and quinine respectively, projected in different areas of the brain. The wide projections of the quinine responding neuron included a lateral area adjacent to the projections of the olfactory interneurons. The sucrose responding neuron was confined to the suboesophageal ganglion with dendritic arborizations overlapping the axonal projections of the gustatory receptor neurons on the proboscis. By serving as a tool for the integration of neurons, the atlas offers visual access to the spatial relationship between the neurons in three dimensions, and thus facilitates the study of neuronal networks in the Heliothis virescens brain. The moth standard brain is accessible at http://www.nt.ntnu.no/users/kvello/H_virescens_standardbrain/

  18. Validation of Shape Context Based Image Registration Method Using Digital Image Correlation Measurement on a Rat Stomach

    DEFF Research Database (Denmark)

    Liao, Donghua; Wang, P; Zhao, Jingbo

    2014-01-01

    needs to be further verified by using a feature tracking measurement. Hence, the aim of this study was to verify the SC method-based calculation by using digital image correlation (DIC) measurement on a rat stomach. The rat stomach exposed to distension pressures 0.0, 0.2, 0.4, and 0.6 kPa were studied...... using both 3D DIC system and SC-based image registration calculation. Three different surface sample counts between the reference and the target surfaces were usedto gauge the effect of the surface sample counts on the calculation. Each pair of the surface points between the DIC measured target surface...... and the SC calculated correspondence surface was compared. Compared with DIC measurement, the SC calculated surface had errors from 5% to 23% at pressures from 0.2 to 0.6 kPa with different surface sample counts between the reference surface and the target surface. This indicates good qualitative...

  19. Digital Sculpting with Mudbox Essential Tools and Techniques for Artists

    CERN Document Server

    de la Flor, Mike

    2010-01-01

    Digital sculpting is the use of tools to push, pull, smooth, grab, pinch or otherwise manipulate a digital object as if it were made of a real-life substance such as clay. Mudbox is the premier sculpting solution for digital artists, allowing them to naturally and easily sculpt detailed, organic characters and models in a way that feels like traditional sculpting.This book guides CG professionals through the process of creating amazing digital sculptures using the Mudbox arsenal of ground-breaking digital sculpting and 3D painting tools, and porting the models into their Maya or Max work.Artis

  20. PIXE analysis of museum soapstone sculptures from Esie, south west Nigeria

    International Nuclear Information System (INIS)

    Olabanji, S.O.; Olarewaju, V.O.; Onabajo, O.

    1989-05-01

    The PIXE technique was employed for the study of Esie museum stone sculptures using 2.55 MeV protons from the 3 MeV tandem accelerator (NEC 3 UDH) in Lund, coupled with the geological and archaeological findings. The aim is to elucidate and decipher the prodigious but rather enigmatic and bewildering stone sculptures. PIXE results show that the composition of the stone sculptures are 40.69% talc-tremolite schist, 30.88% talc-chlorite schist, 15.20% talc-tremolite-anthophyllite schist and 13.24% talc-amphibolite schist. Thus the composition of Esie sculptures are found to be the same with the locally available talc-schists present around Esie. The geological evidence (mineralogical results) corroborated this as there was no textural or mineralogical difference between the talc-bearing country rock (outcrop) in Esie and the museum soapstone samples studied. Consequently, there is a very high probability that the sculptures were carved using the locally available talc-schists. (author). 7 refs, 4 figs, 2 tabs

  1. Effects of sculpture based art therapy in dementia patients-A pilot study.

    Science.gov (United States)

    Seifert, Kathrin; Spottke, Annika; Fliessbach, Klaus

    2017-11-01

    Art and art therapy open up interesting possibilities for dementia patients. However, it has not been evaluated scientifically so far, whether the art of sculpting has any benefits. In this non-randomized pilot study with twelve participants, we investigated the feasibility and acceptance of sculptural activity in patients with dementia and the effects on their well-being. A questionnaire was custom-designed to investigate five key aspects of well-being: mental state and concentration, corporeal memory, self-reliance, self-esteem and physicality. Remarkable improvements were seen in several subscales in the sculptural activity group, but not the control group: Mental state and concentration (nine of thirteen key aspects), self-reliance (four of five), self-esteem (one of one) and physicality (two of two). The results of this pilot study indicate the multidimensional effects of sculptural activity on patients living with dementia. The field would benefit greatly from further research.

  2. Henry Moore’s Public Sculpture in the US: The Collaborations with I. M. Pei

    Directory of Open Access Journals (Sweden)

    Alex Potts

    2016-07-01

    Full Text Available The many commissions Henry Moore received for public sculpture in the United States provided the occasion for several quite distinctive works. While not site specific, these were unique, and their final form, scale, and disposition was elaborated with a particular setting in mind. This aspect of Moore’s work in the US, which began with the monumental piece he designed for the Lincoln Center in New York in 1963–65, is examined here by focusing on the productive relationship he forged with the architect I. M. Pei in the 1970s. The sculptures Moore produced in collaboration with Pei respond in suggestive ways to the spatial environments created in American cities by late modern architectural developments. They also realize an oddly effective combination of the biomorphic and abstract that differs both from the bodily conception of Moore’s earlier work and the non-figurative character of much public sculpture of the time.

  3. A few words about the founder of the Macedonian modern sculpture

    Directory of Open Access Journals (Sweden)

    Marković Kamenko M.

    2016-01-01

    Full Text Available This paper discusses the life and work of Dima Todorovski, the founder of the Macedonian modern sculpture. Dimo Todorovski was born in Thessaloniki in 1910. He finished the Art School, the sculpture department, in Belgrade in 1935. He lived and worked in Skopje from 1942 until his death in 1983. During his career, he made an impressive number of sculptures among which are portraits, lovely female nudes, figures of men in motion, and other pieces related to the WWII. His best pieces include: The Portrait of the Artist's Mother, A Peasant Woman Portrait, The Pit, The Macedonian Pieta, A Girl, A monument in honour of Koco Racin, The Miladinov Brothers, St. Kliment Ohridski.

  4. Examinations of wooden sculptures from the altar of Veit Stoss in Cracow

    Energy Technology Data Exchange (ETDEWEB)

    Braziewicz, J. [Institute of Physics, Swietokrzyska, Academy in Kielce, Swietokrzyska 15, 25-406 Kielce (Poland)]. E-mail: janusz.braziewicz@pu.kielce.pl; Dudzik, R. [Institute of Physics, Swietokrzyska, Academy in Kielce, Swietokrzyska 15, 25-406 Kielce (Poland); JaskoIa, M. [The Andrzej Soltan Institute for Nuclear Studies, 05-400 Otwock-Swierk (Poland); Kubala-Kukus, A. [Institute of Physics, Swietokrzyska, Academy in Kielce, Swietokrzyska 15, 25-406 Kielce (Poland); Kretschmer, W. [Physikalisches Institut, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany); Rutkowski, J. [Faculty of Conservation and Restoration of Works of Art, Academy of Fine Arts, 31-108 Cracow (Poland); Semaniak, J. [Institute of Physics, Swietokrzyska, Academy in Kielce, Swietokrzyska 15, 25-406 Kielce (Poland); Scharf, A. [Physikalisches Institut, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany); Stankiewicz, M. [Institute of Physics, Jagiellonian University, 30-059 Cracow (Poland); Uhl, T. [Physikalisches Institut, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany)

    2005-10-15

    The AMS facility at Erlangen University was used for dating samples from a wooden coping of the Veit Stoss's altar, one taken from its component originating from the 15th century and another one taken from its newer renovated part. The XRF method has been used to investigate trace element distribution inwards the sculptures. Concentrations of some elements, including Cl and Pb, show systematic increase while approaching the front or back side of the sculptures. The measured distributions are discussed in the context of history of the altar, in particular renovation and restoration procedures it underwent over the years.

  5. Examinations of wooden sculptures from the altar of Veit Stoss in Cracow

    International Nuclear Information System (INIS)

    Braziewicz, J.; Dudzik, R.; JaskoIa, M.; Kubala-Kukus, A.; Kretschmer, W.; Rutkowski, J.; Semaniak, J.; Scharf, A.; Stankiewicz, M.; Uhl, T.

    2005-01-01

    The AMS facility at Erlangen University was used for dating samples from a wooden coping of the Veit Stoss's altar, one taken from its component originating from the 15th century and another one taken from its newer renovated part. The XRF method has been used to investigate trace element distribution inwards the sculptures. Concentrations of some elements, including Cl and Pb, show systematic increase while approaching the front or back side of the sculptures. The measured distributions are discussed in the context of history of the altar, in particular renovation and restoration procedures it underwent over the years

  6. Politics of Participation in Benoît Maubrey’s Speaker Sculptures

    DEFF Research Database (Denmark)

    Keylin, Vadim

    Speaker Sculptures is a series of works by Benoît Maubrey, created in 1983-2015. All of them are large-scale architecture-like constructions (often modelled after existing historical buildings or building types) built of recycled loudspeakers. The public could connect to the work by calling...... Sculptures connect the public space to the electronic media, subverting their antagonism and creating a single space of social interactions. This offers a possibility of political presence in public space to those, who are unable to do so in person due to physical or mental disabilities, or other personal...

  7. SMALL ARCHITECTURAL AND SCULPTURAL FORMS ARE IN DESIGN OF INTERIORS OF AIR TERMINALS

    Directory of Open Access Journals (Sweden)

    B.А. Зеленкова

    2012-10-01

    Full Text Available  Determination of small forms is considered in architecture and in a sculpture. Certainly difference between national and international style in a design. Their use is considered in the design of interiors of passenger spaces of air terminals on existent examples. Connection is analysed between architectural small forms and by the sculpture of small forms, which consists in the transmission of the general semantic and aesthetically beautiful loading on a man, namely to create feeling of comfort, national self-esteem, national pride, and but to consciousness

  8. The history of the "Virgin with Child" sculpture (Ottaviano, Naples, southern Italy)

    DEFF Research Database (Denmark)

    Balassone, Giuseppina; Toscano, Maria; Cavazzini, Giancarlo

    2014-01-01

    historical context. Historical documents testify that the sculpture was a property of the cadet branch of noble Tuscan family of the Medici, the Medici of Ottaviano. A multianalytical approach has been used to try to indicate the supply area of the white marble of the studied sculpture. Considering the whole......A life-size whitish marble statue of a "Virgin with Child" has been recently rediscovered in the St.Rosario church located in Ottaviano, a small town near Naples (southern Italy). This artwork shows stylistic features of the Tuscan-Roman school of the 16th century, and is framed in an intriguing...

  9. Acid rain attack on outdoor sculpture in perspective

    Science.gov (United States)

    Livingston, Richard A.

    2016-12-01

    A major concern motivating research in acid rain materials effects has been the potential for damage to cultural heritage, particularly outdoor marble and bronze sculpture. However, a combination of field and laboratory studies has failed to show a correlation between rain pH and loss of materials. In order to understand this counterintuitive lack of acid rain effect, an aqueous geochemical modeling approach was used to analyze rain runoff chemistry for the relative importance of acid rain neutralization, dry deposition, and in the case of marble, natural carbonate dissolution. This approach involved the development of pH - SO42- phase diagrams for marble (calcium carbonate) and bronze (copper) under ambient environmental conditions. This then enabled reaction path modeling of the acid neutralization process using the pH range typically found in wet deposition (3.5-6). The results were for marble that the theoretical maximum amount of Ca2+ ion that could be lost due acid rain neutralization would be 0.158 mmol/l compared to 10.5 mmol/l by dry deposition, and for bronze, the Cu2+ ion losses would be 0.21 mmol/l and 47.3 mmol/l respectively. Consequently dry deposition effects on these materials have the potential to dominate over wet deposition effects. To test these predictions the geochemical models were applied to examples of data sets from mass balance (runoff vs rainfall) studies on a marble statue in New York City and some bronze memorial plaques at Gettysburg PA. Although these data sets were collected in the early 1980s they remain valid for demonstrating the mass balance method. For the marble statue, the mean Ca2+ losses by dry deposition was about 69% of the total compared 0.3% for acid rain neutralization, which was less than the natural carbonate dissolution losses of 0.8%. For the bronze, the mean Cu2+ losses were 70.6% by SO42- dry deposition and 23% by NO3- dry deposition compared to 6.4% by acid rain neutralization. Thus for both cases the wet

  10. Study of Italian Renaissance sculptures using an external beam nuclear microprobe

    International Nuclear Information System (INIS)

    Zucchiatti, A.; Bouquillon, A.; Moignard, B.; Salomon, J.; Gaborit, J.R.

    2000-01-01

    The use of an extracted proton micro-beam for the PIXE analysis of glazes is discussed in the context of the growing interest in the creation of an analytical database on Italian Renaissance glazed terracotta sculptures. Some results concerning the frieze of an altarpiece of the Louvre museum, featuring white angels and cherubs heads, are presented

  11. From Postmodernism to Milk Cartons: Junk Art Sculptures and Pre-Service Teachers' Philosophies of Schooling

    Science.gov (United States)

    McDermott, Morna

    2008-01-01

    This essay focuses of an arts-informed inquiry performed by sixteen pre-service teachers who created sculptures to explore their teaching philosophies. Through this creative process changes occurred in their assumptions and expectations about what is of value in teaching and relationships between themselves, their students, and the community. The…

  12. Stereoscan electron microscope observations on opisthobranch radulae and shell-sculpture

    NARCIS (Netherlands)

    Thompson, T.E.; Hinton, H.E.

    1968-01-01

    Traditional methods of observation applied to the sculpture of tectibranch shells and to the radulae of gastropods in general, have yielded a great deal of information regarding the structure of these organs, which are so important in taxonomy. In the genus Philine, for instance, the numerous

  13. Dress Fashion in Feminist and Child Rights Campaigns in Ghanaian Public Sculptures of the 1990s

    Science.gov (United States)

    Essel, Osuanyi Quaicoo; Opoku-Mensah, Isaac

    2017-01-01

    This article examines how dress fashion in outdoor sculptures of the 1990s in the Accra cityscape accentuated feminist activism, sensitised child right campaigns, and encouraged girl-child education in support of governmental efforts and activism of civil society organisations in Ghana. It gives attention to how dress fashion of the time was used…

  14. Nature and sculpture in the creation of African theatre scenery | Iwuh ...

    African Journals Online (AJOL)

    The meaning of space is defined by the images contained in that space. Creating scenery for the theatre as an indoor activity involves either the creation of imaginary forms or the replication of existing images around the creator's environment. These imported items include natural vegetation, architecture, sculpture and ...

  15. Chronologies in wood and resin: AMS 14C dating of pre-Hispanic Caribbean Wood Sculpture

    Science.gov (United States)

    Joanna Ostapkowicz; Christopher Bronk-Ramsey; Fiona Brock; Tom Higham; Alex C. Wiedenhoeft; Erika Ribechini; Jeannette J. Lucejko; Samuel. Wilson

    2012-01-01

    This paper establishes a chronological framework for selected pieces of Caribbean (Tafno/Lucayan) wooden sculpture, enabling previously ahistoric artefacts to fit back into the wider corpus of pre-colonial material culture. Seventy-two 14C AMS determinations from 56 artefacts held in museum collections are reported, including 32 ceremonial

  16. A likely cranial osteodystrophy (Paget's disease of bone) in a Precolumbian, Mesoamerican stone sculpture.

    Science.gov (United States)

    Toni, R; Ceglia, L

    2017-07-01

    This short note illustrates facial and head features found in a stone sculpture of the ancient, Precolumbian period in a temple of the Mayan city of Copan (Honduras). The authors believe that this observation may support paleoanthropological evidence of Paget's disease of bone, an osteodystrophy described in the Mesoamerican Indian populations before the first millennium A.D.

  17. Data-Driven Analysis of Virtual 3D Exploration of a Large Sculpture Collection in Real-World Museum Exhibitions

    KAUST Repository

    Agus, Marco

    2018-01-29

    We analyze use of an interactive system for the exploration of highly detailed three-dimensional (3D) models of a collection of protostoric Mediterranean sculptures. In this system, when the object of interest is selected, its detailed 3D model and associated information are presented at high resolution on a large display controlled by a touch-enabled horizontal surface at a suitable distance. The user interface combines an object-Aware interactive camera controller with an interactive point-ofinterest selector and is implemented within a scalable implementation based on multiresolution structures shared between the rendering and user interaction subsystems. The system was installed in several temporary and permanent exhibitions and was extensively used by tens of thousands of visitors. We provide a data-driven analysis of usage experience based on logs gathered during a 27-month period at four exhibitions in archeological museums for a total of more than 75K exploration sessions. We focus on discerning the main visitor behaviors during 3D exploration by employing tools for deriving interest measures on surfaces and tools for clustering and knowledge discovery from high-dimensional data. The results highlight the main trends in visitor behavior during the interactive sessions. These results provide useful insights for the design of 3D exploration user interfaces in future digital installations.© 2017 ACM 1556-4673/2017/12-ART2 $15.00.

  18. Analysis of the body mass index and leg profiles of Asian women after total leg sculpture.

    Science.gov (United States)

    Tsai, Feng-Chou; Chen, Chien-Hao; Lin, Chan-Yi; Ho, Li-Yung

    2009-08-01

    In addition to the conventional methods used to improve leg contours, total leg sculpture, including liposuction, selective neurectomy, and transilluminated powered phlebectomy, provides a one-time solution of leg contour problems, which is a major aesthetic concern among Asian women. The authors present the postoperative results of total leg sculpture and determine any significance and correlation between the leg variables and body mass index by statistical analysis. Thirty female patients who underwent total leg sculpture between 2005 and 2008 were included in the study, and prospective analysis of the patients' data was performed during a follow-up period of 1 year. Local measurement variables and body mass index were recorded, and the correlation between them was determined by Pearson's correlation and regression analysis. A paired t test was used to compare the postoperative outcomes. Subjectively, all patient results were satisfactory. There were significant differences between preoperative and postoperative measurements for all variables for total leg sculpture. Body mass index was strongly correlated with all leg indexes, and there was a significant positive correlation between the index and variables related to the buttocks and upper thigh. The satisfactory postoperative leg variables were buttocks circumference (87.85 cm), thigh circumference (T60, 44.20 cm), maximal calf circumference (32.24 cm), and calf ratio (0.78). Each preoperative body mass index increment represents a 0.3 percent circumference improvement around the buttocks after surgery. No obvious morbidities or long-term hospital stays were noted. Total leg sculpture provides a combined aesthetic solution for improving limb contours with minimal morbidity. Patients with larger body mass index values exhibit better aesthetic improvement than those with smaller values.

  19. Pyro-expanded black slate in sculptural art Ardósia piroexpandida em arte escultórica

    Directory of Open Access Journals (Sweden)

    J. C. e Costa

    2013-03-01

    Full Text Available Black slate transformed through a pyroplastic process named pyro-expansion or exfoliation has been explored in the present work in order to be used as sculptural material. Black slate is a highly fissile, fine grained and organic matter rich rock that is the product of the action of low-grade regional metamorphism on black shale (a sedimentary clay and organic matter rich, also fissile and fine grained rock. Black slate if fired at an adequate firing rate up to the temperature range 1000 ºC-1240 ºC shows great potential for the manufacture of sculptural pieces. The technical possibilities of the shaping or conformation of pyro-expanded black slate have also been studied, including the reactions that take place when two different black slate pieces are closely associated with each other, or when black slate pieces are closely associated to other materials, such as metals and ceramics. These interactions, while associating different materials that react with each other, emphasize the unique characteristics of new sculptural compositions increasing the plastic capacities of the pyro-expanded black slate. Some examples of the associations referred to will be shown, which highlight the close functional relationship between art and science; research involves the approach to new techniques and materials, looking at the development of unique plastic configurations.No presente artigo são divulgados os resultados da investigação do comportamento para fins escultóricos da ardósia (rocha de cor negra, granularidade fina e clivagem fina que resulta da acção de metamorfismo regional de baixo grau sobre rocha sedimentar, argilito laminado rico em matéria orgânica transformada piroplasticamente. O material resultante é denominado ardósia piro-expandida ou exfoliada, depois da ardósia natural ser tratada termicamente a temperaturas até 1000 °C-1240 ºC. A investigação subjacente fez uso e desenvolveu conhecimentos do domínio da geologia, mais

  20. From Soft Sculpture to Soft Robotics: Retracing a Physical Aesthetics of Bio-Morphic Softness

    DEFF Research Database (Denmark)

    Jørgensen, Jonas

    2017-01-01

    the soft sculpture that started proliferating in the late 1960s. Critical descriptions of these works, interestingly, frequently emphasize their similarities with living organisms and bodies as a central tenet of their aesthetics. The paper seeks to articulate aspects of a contiguity between softness...... science. Recently, soft robotics technology has also started to make its way into art, design, and architecture. This paper attempts to think an aesthetics of softness and the life-like through an artistic tradition deeply imbricated with an interrogation of softness and its physical substrates, namely...... and the life-like in these works through readings that draw on concepts from technical soft robotics research and the description of life in physics (via entropy). It is argued, that fractions of soft sculpture anticipate central interests and notions present in contemporary technical soft robotics research....

  1. High Rise Building: The Mega Sculpture Made Of Steel, Concrete and Glass

    Science.gov (United States)

    Stefańska, Alicja; Załuski, Daniel

    2017-10-01

    High rise building has transformed from providing not only the expansion of floor space but functioning as mega sculpture in the city. The shift away from economic efficiency driven need is only expected to grow in the future. Based on literature studies; after analysing planning documents and case studies, it was examined whether the presumption that gaining the maximum amount of usable area is the only driving factor; or if the need for the creation of an image for the city provided a supplementary reason. The results showed that forming high rise buildings as three-dimensional sculptures is influenced not only by aesthetics, but also marketing. Visual distinction in the city skyline is economically beneficial for investors gaining not only functionality but art, enriching the cultural landscape. Organizing architectural competitions, public debates and following the latest art trends is therefore possible due to large budgets of such projects.

  2. PIXE and μ-PIXE analysis of glazes from terracotta sculptures of the della Robbia workshop

    International Nuclear Information System (INIS)

    Zucchiatti, Alessandro; Bouquillon, Anne; Lanterna, Giancarlo; Franco, Lucarelli; Mando, Pier Andrea; Prati, Paolo; Salomon, Joseph; Vaccari, Maria Grazia

    2002-01-01

    A series of PIXE analyses has been performed on glazes from terracotta sculptures of the Italian Renaissance and on reference standards. The problems related to the investigation of such heterogeneous materials are discussed and the experimental uncertainties are evaluated, for each element, from the PIXE analysis of standard glasses. Some examples from artefacts coming from Italian collections are given. This research has been conducted in the framework of the COST-G1 European action

  3. Local Treatment for Monochrome Outdoor Painted Metal Sculptures: Assessing the suitability of conservation paints for retouching

    OpenAIRE

    van Basten, Nikki; Defeyt, Catherine; Rivenc, Rachel

    2015-01-01

    When outdoor painted sculptures get chipped, scratched or abraded, conservators might consider local retouching treatments as an option that would protect the exposed metal substrate and restore the aesthetic integrity, thus postponing a very costly and invasive overall repainting. Unfortunately, matching colour gloss and texture on large monochrome surfaces is always challenging. This paper reports on research undertaken to investigate some of the materials and application techniques that co...

  4. Visiting Richard Serra's "Promenade" sculpture improves postural control and judgment of subjective visual vertical.

    Science.gov (United States)

    Kapoula, Zoï; Lang, Alexandre; Lê, Thanh-Thuan; Adenis, Marie-Sarah; Yang, Qing; Lipede, Gabi; Vernet, Marine

    2014-01-01

    Body sway while maintaining an upright quiet stance reflects an active process of balance based on the integration of visual, vestibular, somatosensory, and proprioceptive inputs. Richard Serra's Promenade sculpture featured in the 2008 Monumenta exhibition at the Grand Palais in Paris, France is herein hypothesized to have stimulated the body's vertical and longitudinal axes as it showcased five monumental rectangular solids pitched at a 1.69(°) angle. Using computerized dynamic posturography we measured the body sway of 23 visitors when fixating a cross, or when observing the artwork (fixating it or actively exploring it with eye movements) before and after walking around and alongside the sculpture (i.e., before and after a promenade). A first fixation at the sculpture increased medio-lateral stability (in terms of spectral power of body sway). Eye movement exploration in the depth of the sculpture increased antero-posterior stability [in terms of spectral power and canceling time (CT) of body sway] at the expense of medio-lateral stability (in terms of CT). Moreover, a medio-lateral instability associated with eye movement exploration before the promenade (in terms of body sway sensu stricto) was canceled after the promenade. Finally, the overall medio-lateral stability (in terms of spectral power) increased after the promenade. Fourteen additional visitors were asked to stand in a dark room and adjust a luminous line to what they considered to be the earth-vertical axis. The promenade executed within the sculpted environment afforded by Serra's monumental statuary works resulted in significantly improved performances on the subjective visual vertical test. We attribute these effects to the sculpted environment provided by the exhibition which may have acted as a kind of physiologic "training ground" thereby improving the visitors' overall sense of visual perspective, equilibrium, and gravity.

  5. Visiting Richard Serra’s Promenade sculpture improves postural control and judgment of subjective visual vertical.

    Directory of Open Access Journals (Sweden)

    Zoï eKapoula

    2014-12-01

    Full Text Available Body sway while maintaining an upright quiet stance reflects an active process of balance based on the integration of visual, vestibular, somatosensory and proprioceptive inputs. Richard Serra’s Promenade sculpture featured in the 2008 Monumenta exhibition at the Grand Palais in Paris, France is herein hypothesised to have stimulated the body’s vertical and longitudinal axes as it showcased 5 monumental rectangular solids pitched at a 1.69° angle.Using computerised dynamic posturography we measured the body sway of 23 visitors when fixating a cross, or when observing the artwork (fixating it or actively exploring it with eye movements before and after walking around and alongside the sculpture (i.e., before and after a promenade. A first fixation at the sculpture increased medio-lateral stability (in terms of spectral power of body sway. Eye movement exploration in the depth of the sculpture increased antero-posterior stability (in terms of spectral power and cancelling time of body sway at the expense of medio-lateral stability (in terms of cancelling time. Moreover, a medio-lateral instability associated with eye movement exploration before the promenade (in terms of body sway sensu stricto was cancelled after the promenade. Finally, the overall medio-lateral stability (in terms of spectral power increased after the promenade.Fourteen additional visitors were asked to sit in a dark room and adjust a luminous line to what they considered to be the earth-vertical axis. The promenade executed within the sculpted environment afforded by Serra’s monumental statuary works resulted in significantly improved performances on the subjective visual vertical test.We attribute these effects to the sculpted environment provided by the exhibition which may have acted as a kind of physiologic training ground thereby improving the visitors’ overall sense of visual perspective, equilibrium and gravity.

  6. Wildlife art and illustration: stone sculpture and painting - some experiments in Auroville, Tamil Nadu, India

    Directory of Open Access Journals (Sweden)

    M.E. Ramanujam

    2014-09-01

    Full Text Available The métier of combining granite stone carving with painting of wildlife subjects in Pitchandikulam at Auroville International Township has been rather innovative, and some works are described and analyzed. The basic history of stone carving, and especially of those sculptures with animal motifs, is recounted, and the applications, especially in the context of enhancing landscape architecture, are discussed and highlighted.

  7. The microbial community characteristics of ancient painted sculptures in Maijishan Grottoes, China.

    Science.gov (United States)

    Duan, Yulong; Wu, Fasi; Wang, Wanfu; He, Dongpeng; Gu, Ji-Dong; Feng, Huyuan; Chen, Tuo; Liu, Guangxiu; An, Lizhe

    2017-01-01

    In this study, a culture-independent Illumina MiSeq sequencing strategy was applied to investigate the microbial communities colonizing the ancient painted sculptures of the Maijishan Grottoes, a famous World Cultural Heritage site listed by UNESCO in China. Four mixed samples were collected from Cave 4-4 of the Maijishan Grottoes, the so-called Upper Seven Buddha Pavilion, which was built during the Northern Zhou Dynasty (557-581AD). The 16/18S rRNA gene-based sequences revealed a rich bacterial diversity and a relatively low fungal abundance, including the bacterial groups Actinobacteria, Acidobacteria, Bacteroidetes, Cyanobacteria, Chloroflexi, Firmicutes, Proteobacteria and Verrucomicrobia and the fungal groups Ascomycota, Basidiomycota and Chytridiomycota. Among them, the bacteria genera of Pseudonocardia and Rubrobacter and unclassified fungi in the order of Capnodiales were dominant. The relative abundance of Pseudonocardia in the painted layer samples was higher than that in the dust sample, while Cyanobacteria dominated in the dust sample. Many of them have been discovered at other cultural heritage sites and associated with the biodeterioration of cultural relics. The presence and activity of these pioneering microorganisms may lead to an unexpected deterioration of the painted sculptures that are preserved in this heritage site. Thus, proper management strategies and potential risk monitoring should be used in the Maijishan Grottoes to improve the conservation of these precious painted sculptures.

  8. Photographs of Sculpture: Greek Slave’s ‘complex polyphony’, 1847–77

    Directory of Open Access Journals (Sweden)

    Patrizia Di Bello

    2016-06-01

    Full Text Available This article explores some of the representations, iterations, and appearances of Hiram Powers’s 'Greek Slave' in London in the decades after its first exhibition in 1845, years in which a variety of new ‘engines of the fine arts’ were fuelling a widening market for art objects of all kinds, and popular culture could turn statues into celebrities appearing everywhere — exhibitions, photographers’ studios, newspapers, 'tableau-vivant' shows, even confectionery shops. The article’s focus is on how sculpture was used in the reception and understanding of photography as a new medium of reproduction, and how the materiality of specific photographic ‘objects’ — daguerreotypes, paper prints, and stereographs — interacted with that of sculpture to affect the viewer, at a time when sculptural objects themselves blurred the boundaries between original and reproduction. The article ends with an analysis of stereoscopic cards of 'Greek Slave', as the first photographic reproductions that could really compete with wood engravings and statuettes in the dissemination and circulation of statues, arguing for their pleasurable interactivity as key to their success.

  9. DOUBLE BOSS SCULPTURED DIAPHRAGM EMPLOYED PIEZORESISTIVE MEMS PRESSURE SENSOR WITH SILICON-ON-INSULATOR (SOI

    Directory of Open Access Journals (Sweden)

    D. SINDHANAISELVI

    2017-07-01

    Full Text Available This paper presents the detailed study on the measurement of low pressure sensor using double boss sculptured diaphragm of piezoresistive type with MEMS technology in flash flood level measurement. The MEMS based very thin diaphragms to sense the low pressure is analyzed by introducing supports to achieve linearity. The simulation results obtained from Intellisuite MEMS CAD design tool show that very thin diaphragms with rigid centre or boss give acceptable linearity. Further investigations on very thin diaphragms embedded with piezoresistor for low pressure measurement show that it is essential to analyse the piezoresistor placement and size of piezoresistor to achieve good sensitivity. A modified analytical modelling developed in this study for double boss sculptured diaphragm results were compared with simulated results. Further the enhancement of sensitivity is analyzed using non uniform thickness diaphragm and Silicon-On-Insulator (SOI technique. The simulation results indicate that the double boss square sculptured diaphragm with SOI layer using 0.85μm thickness yields the higher voltage sensitivity, acceptable linearity with Small Scale Deflection.

  10. Comparing Compositions of Modern Cast Bronze Sculptures: Optical Emission Spectroscopy Versus x-Ray Fluorescence Spectroscopy

    Science.gov (United States)

    Young, M. L.; Dunand, D. C.

    2015-07-01

    Bulk elemental compositions of 74 modern cast bronze sculptures from the collection at the Art Institute of Chicago, the Philadelphia Museum of Art, and the Rodin Museum (Philadelphia, PA) were determined using inductively coupled plasma-optical emission spectroscopy (ICP-OES) and a handheld x-ray fluorescence (XRF) spectrometer. The elemental compositions of the cast sculptures as measured previously by ICP-OES and presently by XRF are compared: A good match is found between the two methods for the base metal (Cu) and the two majority alloying elements (Zn and Sn). For both ICP-OES and XRF data, when the Zn composition is plotted versus the Sn composition, three discernable clusters are found that are related to the artist, foundry, casting date, and casting method; they consist of (A) high-zinc brass, (B) low-zinc, low-tin brass, and (C) low-zinc, tin bronze. Thus, our study confirms that the relatively fast, nondestructive XRF spectrometry can be used effectively over slower and invasive, but more accurate, ICP-OES to help determine a sculpture's artist, foundry, date of creation, date of casting, and casting method.

  11. Micro-analytical study of a rare papier-mâché sculpture.

    Science.gov (United States)

    Manso, Marta; Bidarra, Ana; Longelin, Stéphane; Pessanha, Sofia; Ferreira, Adriana; Guerra, Mauro; Coroado, João; Carvalho, Luísa

    2015-02-01

    The analysis of a Portuguese "papier-mâché" sculpture depicting Saint Anthony is presented in this case study. Several questions were addressed such as the characteristics of the support, pigments used, and artistic technique in order to establish a possible timeline for its production. Qualitative analyses of the cross-sections and of the paper support were performed by optical microscopy using reflected light. Two polychrome layers from different periods and a rag pulped support were identified on the sculpture. The use of micro X-ray fluorescence and Raman microscopy techniques enabled the differentiation of coloring materials used in both polychromies. Semi-quantitative analyses of the gilded samples were also performed by scanning electron microscopy in combination with energy-dispersive spectroscopy allowing the determination of a common Au-Ag-Cu alloy with differences in the purity of the gold. The identified coloring materials lead us to believe that the sculpture was produced in the 19th century, being overpainted in the first half of the 20th century.

  12. "Lesbians are not women": feminine and lesbian sensibilities in Harmony Hammond's late-1970s sculpture.

    Science.gov (United States)

    Thompson, Margo Hobbs

    2008-01-01

    Harmony Hammond's wrapped fabric sculptures are placed in context of the theories of gender and sexuality that circulated among lesbian and straight feminists at the time they were made, the late 1970s. Hammond has cited in particular Monique Wittig's novels, such as The Lesbian Body, and her essays including "The Straight Mind" where Wittig concludes that the lesbian is not a woman. The critique to which Wittig's lesbian separatism has been subjected by Judith Butler in her consideration of the appeal and limitations of essentialism also applies to Hammond's art. Hammond's use of vaginal imagery was instrumental to visualizing a lesbian sensibility, but the proposition of such a sensibility established a new problematic: a new essential category. The article concludes that because Hammond's work was produced in the context of a complex set of discourses, lesbian, feminist, and aesthetic, it resisted reduction to a singular meaning. Her sculptures avoided the pitfall of substituting one essence for another, lesbian for feminine sensibility, but activated both. The sculptures effectively queered vaginal imagery: When Hammond used vaginal imagery to represent lesbian sensibility, she subverted the equation of sex and gender and the essentialist notion of feminine sensibility.

  13. Pride and memory: perceptions of individuality in Iberian sculpture around 1400

    Directory of Open Access Journals (Sweden)

    Javier Martínez de Aguirre

    2017-12-01

    Full Text Available In the Iberian kingdoms of Castile-Leon and Navarre, the development of individualized sculptural representations at the beginning of fifteenth-century was directly conditioned by the interest of patrons. Castilian kings and many nobles of the most powerful lineages gave no importance to the commissioning of funerary statues. On the other hand, King Charles the Noble of Navarre and some prelates and nobles, raised to the highest positions because of their services to the monarchs, felt more attracted by the idea of leaving a memory including their physical appearance. The depiction of physical likeness depended, secondly, on the training and ability of the artists, as well as on the existence or not of the sitter at the time the work was executed. In Navarra, sculptural fidelity to facial features enjoyed wide acceptance, while the contemporary literature showed no signs of interest in these personality traits. In Castile, however, writers of classical training had provided physical descriptions of the main characters in history since the 14th century, while sculptural depiction of individualized features came later.

  14. Archaeometric characterization and provenance determination of sculptures and architectural elements from Gerasa, Jordan

    Science.gov (United States)

    Al-Bashaireh, Khaled

    2018-02-01

    This study aims at the identification of the provenance of white marble sculptures and architectural elements uncovered from the archaeological site of Gerasa and neighboring areas, north Jordan. Most of the marbles are probably of the Roman or Byzantine periods. Optical microscopy, X-ray diffraction, and mass spectrometry were used to investigate petrographic, mineralogical and isotopic characteristics of the samples, respectively. Analytical results were compared with the main reference databases of known Mediterranean marble quarries exploited in antiquity. The collected data show that the most likely main sources of the sculptures were the Greek marble quarries of Paros-2 (Lakkoi), Penteli (Mount Pentelikon, Attica), and Thasos-3 (Thasos Island, Cape Vathy, Aliki); the Asia Minor marble quarries of Proconessus-1 (Marmara) and Aphrodisias (Aphrodisias); and the Italian quarry of Carrara (Apuan Alps). Similarly, the Asia Minor quarries of the fine-grained Docimium (Afyon) and the coarse-grained Proconessus-1 (Marmara) and Thasos-3 are the most likely sources of the architectural elements. The results agree with published data on the wide use of these marbles for sculpture and architectural elements.

  15. Toward a new concept of the "cultural elite state": Cultural capital and the urban sculpture planning authority in elite coalition in Shanghai

    OpenAIRE

    Zheng, Jane

    2016-01-01

    The emergence of an attractive public art scene in urban public areas (termed urban sculpture in the Chinese context) is a recent phenomenon in Shanghai. The role of the local state in urban sculpture planning and development has not been critically examined. This article proposes a model entitled "cultural elite state" to conceptualize the characteristics of urban sculpture authority. The main argument is that the cultural capital held by individual political and social eli...

  16. Cartography of irregularly shaped satellites

    Science.gov (United States)

    Batson, R. M.; Edwards, Kathleen

    1987-01-01

    Irregularly shaped satellites, such as Phobos and Amalthea, do not lend themselves to mapping by conventional methods because mathematical projections of their surfaces fail to convey an accurate visual impression of the landforms, and because large and irregular scale changes make their features difficult to measure on maps. A digital mapping technique has therefore been developed by which maps are compiled from digital topographic and spacecraft image files. The digital file is geometrically transformed as desired for human viewing, either on video screens or on hard copy. Digital files of this kind consist of digital images superimposed on another digital file representing the three-dimensional form of a body.

  17. Digital Creativity

    DEFF Research Database (Denmark)

    Petersson Brooks, Eva; Brooks, Anthony Lewis

    2014-01-01

    This paper reports on a study exploring the outcomes from children’s play with technology in early childhood learning practices. The paper addresses questions related to how digital technology can foster creativity in early childhood learning environments. It consists of an analysis of children......’s interaction with the KidSmart furniture focusing on digital creativity potentials and play values suggested by the technology. The study applied a qualitative approach and included125 children (aged three to five), 10 pedagogues, and two librarians. The results suggests that educators should sensitively...... consider intervening when children are interacting with technology, and rather put emphasize into the integration of the technology into the environment and to the curriculum in order to shape playful structures for children’s digital creativity....

  18. Wetting and elasto-plasticity based sculpture of liquid marbles.

    Science.gov (United States)

    Liu, Jianlin; Zuo, Pingcheng

    2016-02-01

    As an emerging material with exotic properties, liquid marble holds great potential for such areas as microfluidics, stimuli-responsive sensors, micro-chemical reactors, micro-bioreactors, energy harvesting devices, and mechanical structures. In this study, we mainly concentrate on the mechanical behaviors, such as elasto-plasticity of liquid marble with the decrease of liquid volume. The contact radius with the substrate and Young's contact angle of liquid marble are both measured with the change of water volume, and those of a water droplet are compared. The mechanism for the different responses for liquid marble and water droplet is clarified according to the mechanics analysis. Moreover, it is found that liquid marble can behave like an elasto-plastic material when the particle surface density is big enough. Based upon this fact, liquid marble can be sculpted to all kinds of special shapes as expected. These investigations may cast new light on how to engineer multifunctional materials and devices, which are beneficial to microprinting and micromachining.

  19. The Materials and Techniques of Polychrome Baroque Wooden Sculpture: Three Works From Baião, Portugal

    Directory of Open Access Journals (Sweden)

    C. Barata

    2010-03-01

    Full Text Available Three polychrome wooden sculptures, made between the last quarter of the 17th century and the first half of the 18th century, from a monastery in Northern Portugal, representing an episode of the Passion of Christ, were analysed with three aims: to identify the materials and techniques employed; to clarify the relationship between the three sculptures; to reveal previous restorations. Techniques such as radiography, energy dispersive X-ray spectrometry, optical and polarized light microscopy and Fourier Transform infrared spectroscopy were employed. White lead, vermillion, umber, carbon black, gypsum, anhydride and chalk were identified as pigments and fillers. These materials and the layer structure led to the conclusion that sculptures 1 and 2 were treated as a pair of sculptures and that they underwent at least two restorations: the first was probably done in the workshop where they were made. During the second restoration, the heads were replaced. Sculpture 3 is not restored and its poorer style seems to have correspondence to materials of lower quality.

  20. The great beauty: a neuroaesthetic study by neuroelectric imaging during the observation of the real Michelangelo's Moses sculpture.

    Science.gov (United States)

    Babiloni, F; Cherubino, P; Graziani, I; Trettel, A; Bagordo, G M; Cundari, C; Borghini, G; Arico, P; Maglione, A G; Vecchiato, G

    2014-01-01

    Recent studies have been showed as the perception of real or displayed masterpieces by ancient or modern painters generate stable neuroelectrical correlates in humans. In this study, we collected the neuroelectrical brain activity correlated with the observation of the real sculpture of Michelangelo's Moses within the church where it is actually installed in a group of healthy subjects. In addition to the cerebral activity also the heart rate (HR) and the galvanic skin response (GSR) were collected simultaneously, to assess the emotional engage of the investigated population. The Moses sculpture was observed by the group from three different point of views, each one revealing different details of the sculpture. In addition, in each location the light conditions related to the specific observation of the sculpture were explicitly changed. Results showed that cerebral activity of the subjects varied significantly across the three different views and for light condition against no light condition (psculpture could be easily grab by the eyes. Results suggested how the perception of the sculpture depends critically by the point of view of the observers and how such point of view can produce separate emotional and cerebral responses.

  1. The Relevance of the Organic Tradition in Architecture in the Digital Age

    DEFF Research Database (Denmark)

    Jaeger, Thomas Arvid; Carter, Adrian Stanley

    2017-01-01

    Abstract The paper will propose that as the digital technology evolves, enabling us to increasingly emulate the forms of nature within our built environment, as we see in the parametric design, it will be ever more important to understand the origins of nature and organic growth in form and concept...... - and what this means for our perception of architecture. The Digital Age has been introducing a new wave of sculptural, organic curved architecture – often placed as iconic landmarks in the city. These buildings represent a new kind of aesthetics in contrast to the rectangular Euclidian rationalistic...... architecture, which has been the hallmark of the modernist architecture since Bauhaus– but also a revival of the organic sculptural architecture of the middle of the 20th cent. In order to understand the nature of this new “digital organic” language of form, we propose a study of the short but significant...

  2. Implementation of a neural network for digital pulse shape analysis on a FPGA for on-line identification of heavy ions

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez, R., E-mail: naharro@uhu.es [Departamento de Ingenieria Eletronica, Sistemas Informaticos y Automatica, Universidad de Huelva, 21071 Huelva (Spain); Sanchez-Raya, M.; Gomez-Galan, J.A. [Departamento de Ingenieria Eletronica, Sistemas Informaticos y Automatica, Universidad de Huelva, 21071 Huelva (Spain); Flores, J.L. [Departamento Ingenieria Electrica y Termica, Universidad de Huelva, 21071 Huelva (Spain); Duenas, J.A.; Martel, I. [Departamento de Fisica Aplicada, Universidad de Huelva, 21071 Huelva (Spain)

    2012-05-11

    Pulse shape analysis techniques for the identification of heavy ions produced in nuclear reactions have been recently proposed as an alternative to energy loss and time of flight methods. However this technique requires a large amount of memory for storing the shapes of charge and current signals. We have implemented a hardware solution for fast on-line processing of the signals producing the relevant information needed for particle identification. Since the pulse shape analysis can be formulated in terms of a pattern recognition problem, a neural network has been implemented in a FPGA device. The design concept has been tested using {sup 12,13}C ions produced in heavy ion reactions. The actual latency of the system is about 20 {mu}s when using a clock frequency of 50 MHz.

  3. Soluble salt sources in medieval porous limestone sculptures: A multi-isotope (N, O, S) approach

    Energy Technology Data Exchange (ETDEWEB)

    Kloppmann, W., E-mail: w.kloppmann@brgm.fr [BRGM, Direction des Laboratoires, Unité Isotopes, BP 6009, F-45060 Orléans cedex 2 (France); Rolland, O., E-mail: olivierrolland@wanadoo.fr [Montlouis-sur-Loire (France); Proust, E.; Montech, A.T. [BRGM, Direction des Laboratoires, Unité Isotopes, BP 6009, F-45060 Orléans cedex 2 (France)

    2014-02-01

    The sources and mechanisms of soluble salt uptake by porous limestone and the associated degradation patterns were investigated for the life-sized 15th century “entombment of Christ” sculpture group located in Pont-à-Mousson, France, using a multi-isotope approach on sulphates (δ{sup 34}S and δ{sup 18}O) and nitrates (δ{sup 15}N and δ{sup 18}O). The sculpture group, near the border of the Moselle River, is within the potential reach of capillary rise from the alluvial aquifer. Chemical analyses show a vertical zonation of soluble salts with a predominance of sulphates in the lower parts of the statues where crumbling and blistering prevail, and higher concentrations of nitrates and chloride in the high parts affected by powdering and efflorescence. Isotope fingerprints of sulphates suggest a triple origin: (1) the lower parts are dominated by capillary rise of dissolved sulphate from the Moselle water with characteristic Keuper evaporite signatures that progressively decreases with height; (2) in the higher parts affected by powdering the impact of atmospheric sulphur becomes detectable; and (3) locally, plaster reparations impact the neighbouring limestone through dissolution and re-precipitation of gypsum. Nitrogen and oxygen isotopes suggest an organic origin of nitrates in all samples. N isotope signatures are compatible with those measured in the alluvial aquifer of the Moselle River further downstream. This indicates contamination by sewage or organic fertilisers. Significant isotopic contrasts are observed between the different degradation features depending on the height and suggest historical changes of nitrate sources. - Highlights: • We use S, N and O isotopes to distinguish salt sources in limestone sculptures. • Vertical zonation of degradation is linked to capillary rise and air pollution. • Sulphate salts in lower parts are derived from river/groundwater. • Sulphate salts in higher parts show signature of air pollution. • Nitrates

  4. Nondestructive insights into composition of the sculpture of Egyptian Queen Nefertiti with CT.

    Science.gov (United States)

    Huppertz, Alexander; Wildung, Dietrich; Kemp, Barry J; Nentwig, Tanja; Asbach, Patrick; Rasche, Franz Maximilian; Hamm, Bernd

    2009-04-01

    To assess the conservation status of, to gain information on the creation of, and to provide surface reformations of the core and the surface of the bust of the pharaoh-queen Nefertiti, considered to be one of the greatest treasures of ancient Egyptian art, with computed tomography (CT). Multisection CT was performed with 0.6-mm section thickness. Two- and three-dimensional reformations were made to depict the core and the surface separately. The stucco layer on the face and the ears was very thin, a maximum of 1-2 mm thick. The rear part of the reconstructed crown showed two thick stucco layers of different attenuation values, indicating that a multistep process was used to create the sculpture. Within the stucco, a great number of air-equivalent hypoattenuating areas, filamentous fissures parallel to the surface, and an inhomogeneous bonding between the layers were delineated. Nefertiti's inner face was not anonymous, but rather delicately sculpted by the royal sculptor Thutmose. The comparison to the outer face revealed differences, including the angles of the eyelids, creases around the corners of the mouth on the limestone surface, and a slight bump on the ridge of the nose. According to the beauty ideals of the Amarna period, the differences had positive and negative effects and can be read as signs of individualization of the sculpture. The potential material-related weaknesses of the sculpture that were revealed at imaging necessitate careful handling, with the avoidance of any focal pressure and shearing forces in the crown and the shoulders. CT imaging revealed construction techniques in Nefertiti's bust that had implications for conservation, as well as for an understanding of the artistic methods used in the creation of this masterpiece of art of the 18th dynasty.

  5. Perspectives in shape analysis

    CERN Document Server

    Bruckstein, Alfred; Maragos, Petros; Wuhrer, Stefanie

    2016-01-01

    This book presents recent advances in the field of shape analysis. Written by experts in the fields of continuous-scale shape analysis, discrete shape analysis and sparsity, and numerical computing who hail from different communities, it provides a unique view of the topic from a broad range of perspectives. Over the last decade, it has become increasingly affordable to digitize shape information at high resolution. Yet analyzing and processing this data remains challenging because of the large amount of data involved, and because modern applications such as human-computer interaction require real-time processing. Meeting these challenges requires interdisciplinary approaches that combine concepts from a variety of research areas, including numerical computing, differential geometry, deformable shape modeling, sparse data representation, and machine learning. On the algorithmic side, many shape analysis tasks are modeled using partial differential equations, which can be solved using tools from the field of n...

  6. The influence of the analog-to-digital conversion error on the JT-60 plasma position/shape feedback control system

    International Nuclear Information System (INIS)

    Yoshida, Michiharu; Kurihara, Kenichi

    1995-12-01

    In the plasma feedback control system (PFCS) and the direct digital controller (DDC) for the poloidal field coil power supply in the JT-60 tokamak, it is necessary to observe signals of all the poloidal field coil currents. Each of the signals, originally measured by a single sensor, is distributed to the PFCS and DDC through different cable routes and different analog-to-digital converters from each other. This produces the conversion error to the amount of several bits. Consequently, proper voltage from feedback calculation cannot be applied to the coil, and hence the control performance is possibly supposed to deteriorate to a certain extent. This paper describes how this error makes an influence on the plasma horizontal position control and how to improve the deteriorated control performance. (author)

  7. SPECIFIC FEATURES OF THE PORTRAIT IN NATIONAL PAINTING AND SCULPTURE (1945-1960

    Directory of Open Access Journals (Sweden)

    LOZOVANU VLADIMIR

    2016-12-01

    Full Text Available The present article is devoted to the peculiarities of the portrait in national painting and sculpture in the period of the 1950s. The text refl ects the creation of prominent artists who have realized the most famous portrait works. The author presents examples of representative portraits and they are analysed in the context of the period we refer to. He identifies both the methods, techniques, the ideas and aspiration of plastic artists who have practised portrait art. the presented information is useful to artists and teachers working in the fi eld of visual arts and to students who are interested in portrait painting.

  8. On Penelope Curtis’ Patio and Pavilion: The Place of Sculpture in Modern Architecture

    Directory of Open Access Journals (Sweden)

    Brian Hatton

    2014-02-01

    Full Text Available This is more of an engagement with Curtis’ classic text than a book review, its author being more concerned with expanding on the significance of some of the points made in Patio and Pavilion. Hatton explores the relationship between the artwork (mostly examples of sculpture and its architectural container (that is, the pavilion, museum or gallery, and way in which that binary is deconstructed in the work of a number of architect-artists from Mies van der Rohe through to Dan Graham, where the pavilion itself becomes the object of display.

  9. Teachingless spray-painting of sculptured surface by an industrial robot

    OpenAIRE

    Asakawa, Naoki; Takeuchi, Yoshimi

    1997-01-01

    The study deals with the automatic spray-painting by a 6-DOF industrial robot equipped with an air spray gun. Since the robot control commands generation for the spray-painting is manually performed by skilled workers using a teaching-playback function of a robot controller, the time, experience and patience are required. The study aims at making robot control commands without any special knowledge on spray-painting, in the case of bumpers of a car as an example of sculptured surfaces. The sy...

  10. Study of the laser cleaning on plaster sculptures. The effect of laser irradiation on the surfaces

    Science.gov (United States)

    Pelosi, C.; Fodaro, D.; Sforzini, L.; Rubino, A. R.; Falqui, A.

    2013-06-01

    The focus of this paper is to study the effects caused by the laser irradiation on nineteenth and twentieth century plaster sculptures. Before applying the laser cleaning on the sculptures, it was tested on samples prepared in laboratory according to the results of the scientific investigation carried out on the selected works of art. The characterization of the surface finishing materials of the sculptures was performed by Fourier Transform Infrared spectrometry (FTIR), X-ray Fluorescence spectroscopy (XRF), UV fluorescence photography, and internal micro stratigraphic analysis. Regarding the finishing materials, shellac, zinc white, siccative oil and proteins were found on the surfaces. The results of the scientific investigation, together with the examination of the ancient technical manuals, were used to create the laboratory samples to carry out the irradiation tests with laser. The laser irradiation and cleaning tests were carried out with a Q-switched Nd:YAG system. The irradiated surfaces were analyzed before and after the laser tests with the aid of a video microscope and a reflectance spectrophotometer, in order to evaluate the color changes of the surfaces. The possible morphological modifications caused by laser irradiation were also investigated by Scanning Electron Microscopy (SEM) together with ancillary Energy Dispersive Spectroscopy (EDS) elemental analysis. Concerning the laser cleaning test on the samples, in general little color changes were observed both with the 532 and 1064 nm wavelength. Total color changes, expressed as Δ E*, are always small apart from the samples made of shellac and zinc white in linseed oil, as finishing layer. As regards these samples the surface irradiated with the laser greyed lightly, corresponding to a decrease of L* parameter (lightness). SEM imaging of the treated and not-treated samples, both at low and high magnification, does not show evidence of significant morphological differences due to the laser beam

  11. 3DMADMAC|SPECTRAL: Hardware and Software Solution for Integrated Digitization of 3D Shape, Multispectral Color and BRDF for Cultural Heritage Documentation

    Directory of Open Access Journals (Sweden)

    Robert Sitnik

    2011-12-01

    Full Text Available In this article a new 3D measurement system along with the study on 3D printing technology is presented from the perspective of quality of reproduction. In the first part of the paper the 3DMADMAC|SPECTRAL system which integrates 3D shape with additional color and angular reflectance measurement capabilities is presented (see Figure 1. The shape measurement system is based on structured light projection with the use of a DLP projector. The 3D shape measurement method is based on sinusoidal fringes and Gray codes projection. Color is being measured using multispectral images with a set of interference filters to separate spectral channels. Additionally the set up includes an array of compact light sources for measuring angular reflectance based on image analysis and 3D data processing. All three components of the integrated system use the same greyscale camera as a detector. The purpose of the system is to obtain complete information about shape, color and reflectance characteristic of mea sured surface, especially for cultural heritage objects - in order to create high quality 3D documentation. In the second part of the paper the 3D printing technology will be tested on real measured cultural heritage objects. Tests allow to assess measurement and color accuracy of reproduction by selected 3D printing technology and shed some light on how current 3D printing technology can be applied into cultural heritage.

  12. Shaping light with MOEMS

    Science.gov (United States)

    Noell, W.; Weber, S.; Masson, J.; Extermann, J.; Bonacina, L.; Bich, A.; Bitterli, R.; Herzig, H. P.; Kiselev, D.; Scharf, T.; Voelkel, R.; Weible, K. J.; Wolf, J.-P.; de Rooij, N. F.

    2011-03-01

    Shaping light with microtechnology components has been possible for many years. The Texas Instruments digital micromirror device (DMD) and all types of adaptive optics systems are very sophisticated tools, well established and widely used. Here we present, however, two very dedicated systems, where one is an extremely simple MEMS-based tunable diffuser, while the second device is complex micromirror array with new capabilities for femtosecond laser pulse shaping. Showing the two systems right next to each other demonstrates the vast options and versatility of MOEMS for shaping light in the space and time domain.

  13. Étude et restauration de deux sculptures de jardin en terre cuite

    Directory of Open Access Journals (Sweden)

    Sabrina Vétillard

    2012-06-01

    Full Text Available L’étude et la restauration de deux sphynges en terre cuite, particulièrement dégradées par leur installation en extérieur, ont permis d’approfondir la connaissance des techniques d’estampage, de caractériser les propriétés des terres cuites et les mécanismes de dégradation liés au gel. Les différentes techniques mises en oeuvre ont été l’occasion de réfléchir aux limites d’intervention pour des sculptures de jardin.The study and the restoration of two sphynges in terra-cotta, particularly degraded by their outdoor installation, allowed to deepen the knowledge of stamping techniques, to characterize the properties of terra-cottas and mechanisms of degradation bound to the frost. The different techniques used were the opportunity to think about limits of intervention for garden installed sculptures.

  14. Model Making and Anti-Competitive Practices in the Late Eighteenth-Century London Sculpture Trade

    Directory of Open Access Journals (Sweden)

    Craske, Matthew

    2014-03-01

    Full Text Available This article concerns the generation of anti-competitive practices, and the associated discontents, that rose to the fore in the London sculpture trade in the late eighteenth century (1770-1799. It charts the business strategies and technical procedures of the most economically successful practitioners, whose workshops had some of the characteristics of manufactories, and whose critics accused them of conducting a "monopoly" trade. Small-scale practitioners lost out in the competition for great public contracts on account of their design processes and their inability to represent any manifestation of "establishment". A combination of three factors increased the gap between a handful of powerful "manufacturers" and the rest of the trade: the foundation of the Royal Academy, shifts in the ways designs were evaluated, and a growing number of very lucrative contracts for public sculpture. I conclude that such were the discontents within the London trade that by the 1790s, there was a marked tendency for practitioners who were not manufacturers to be attracted to democratic political movements, to the Wilkite call for liberty and the rise of civic radicalism in the merchant population of London.

  15. Soluble salt sources in medieval porous limestone sculptures: a multi-isotope (N, O, S) approach.

    Science.gov (United States)

    Kloppmann, W; Rolland, O; Proust, E; Montech, A T

    2014-02-01

    The sources and mechanisms of soluble salt uptake by porous limestone and the associated degradation patterns were investigated for the life-sized 15th century "entombment of Christ" sculpture group located in Pont-à-Mousson, France, using a multi-isotope approach on sulphates (δ(34)S and δ(18)O) and nitrates (δ(15)N and δ(18)O). The sculpture group, near the border of the Moselle River, is within the potential reach of capillary rise from the alluvial aquifer. Chemical analyses show a vertical zonation of soluble salts with a predominance of sulphates in the lower parts of the statues where crumbling and blistering prevail, and higher concentrations of nitrates and chloride in the high parts affected by powdering and efflorescence. Isotope fingerprints of sulphates suggest a triple origin: (1) the lower parts are dominated by capillary rise of dissolved sulphate from the Moselle water with characteristic Keuper evaporite signatures that progressively decreases with height; (2) in the higher parts affected by powdering the impact of atmospheric sulphur becomes detectable; and (3) locally, plaster reparations impact the neighbouring limestone through dissolution and re-precipitation of gypsum. Nitrogen and oxygen isotopes suggest an organic origin of nitrates in all samples. N isotope signatures are compatible with those measured in the alluvial aquifer of the Moselle River further downstream. This indicates contamination by sewage or organic fertilisers. Significant isotopic contrasts are observed between the different degradation features depending on the height and suggest historical changes of nitrate sources. © 2013.

  16. Alison Gill – "To See a World", an exhibition of new sculpture and works on paper

    CERN Multimedia

    2013-01-01

    Wednesday, 11 December 2013 from 4 p.m. to 5 p.m. in the Library, bldg. 52 1-052 "Sculpture stories and invisible things" How might the presence of an artist influence the CMS experiment? And how does the LHC change the artist and the work they make? Over the last two decades, I have worked with a wide range of media to create both sculpture and drawing. The interdisciplinary approach that I have taken has often involved engagement and dialogues with scientists. Through my art, I explore the stories we tell to make sense of things that seem beyond our conscious grasp, taking familiar objects and materials and re-purposing, casting or altering the meaning. Underlying themes have included folklore, beliefs and methods used in the pursuit of transcendence. Knots, Klein bottles and Möbius strips have also been used for their topological, emotive and metaphysical associations. I try to scrutinise the world around me to find hidden meanings and use humour to provoke thought, elicit c...

  17. Digital broadcasting

    International Nuclear Information System (INIS)

    Park, Ji Hyeong

    1999-06-01

    This book contains twelve chapters, which deals with digitization of broadcast signal such as digital open, digitization of video signal and sound signal digitization of broadcasting equipment like DTPP and digital VTR, digitization of equipment to transmit such as digital STL, digital FPU and digital SNG, digitization of transmit about digital TV transmit and radio transmit, digital broadcasting system on necessity and advantage, digital broadcasting system abroad and Korea, digital broadcasting of outline, advantage of digital TV, ripple effect of digital broadcasting and consideration of digital broadcasting, ground wave digital broadcasting of DVB-T in Europe DTV in U.S.A and ISDB-T in Japan, HDTV broadcasting, satellite broadcasting, digital TV broadcasting in Korea, digital radio broadcasting and new broadcasting service.

  18. Joep van Lieshout's Mobile Home for Kröller-Müller: outdoor polyester sculpture in transit

    NARCIS (Netherlands)

    Stigter, S.; Beerkens, L.; Schellen, H.L.; Kuperholc, S.; Bridgland, J.

    2008-01-01

    The nature and condition of the large scale glass fibre reinforced polyester resin outdoor sculpture by Dutch artist Joep van Lieshout: Mobile Home for Kröller-Müller (1995) is challenging traditional conservation ethics. Chemists, physicists, art historians, conservators specialised in different

  19. Ars Moriendi Tradition and Visualization of Death in Roman Baroque Sculpture: Death Education in the Seventeenth Century.

    Science.gov (United States)

    Westin, Robert H.

    1980-01-01

    The tradition of the Ars Moriendi influenced art by creating a new reality in which the dead could appear eternally alive. A good death was seen as an act of faith. The literature of Ars Moriendi influenced baroque sculpture which today is viewed as almost bizarre. (JAC)

  20. Photographer: NASA Ames On 20 December 1989, Ames buried a time capsule and unveiled a sculpture at

    Science.gov (United States)

    1989-01-01

    Photographer: NASA Ames On 20 December 1989, Ames buried a time capsule and unveiled a sculpture at the spot where, fifty years earlier, Russel Robinson had turned the first spade of dirt for the Ames construction shack: Robinson (left) Ames Director Dale Compton (center) and Ames Deputy Director Sy Syvertson (right)

  1. The Relevance of the Organic Tradition in Architecture in the Digital Age

    DEFF Research Database (Denmark)

    Jaeger, Thomas Arvid; Carter, Adrian Stanley

    2017-01-01

    - and what this means for our perception of architecture. The Digital Age has been introducing a new wave of sculptural, organic curved architecture – often placed as iconic landmarks in the city. These buildings represent a new kind of aesthetics in contrast to the rectangular Euclidian rationalistic...... architecture, which has been the hallmark of the modernist architecture since Bauhaus– but also a revival of the organic sculptural architecture of the middle of the 20th cent. In order to understand the nature of this new “digital organic” language of form, we propose a study of the short but significant...... production and was in fact able to develop a prefabricated system for double curved form. This paper shows how Utzon’s major work collects the threads from the past and actually fulfils the goals in the architectural scale for new organic form – as Noyes defined it in 1941. This article will present some...

  2. Adaptive Digital Scan Variable Pixels

    OpenAIRE

    Sugathan, Sherin; Scaria, Reshma; James, Alex Pappachen

    2015-01-01

    The square and rectangular shape of the pixels in the digital images for sensing and display purposes introduces several inaccuracies in the representation of digital images. The major disadvantage of square pixel shapes is the inability to accurately capture and display the details in the objects having variable orientations to edges, shapes and regions. This effect can be observed by the inaccurate representation of diagonal edges in low resolution square pixel images. This paper explores a...

  3. A highly sensitive multiplasmonic sensor using hyperbolic chiral sculptured thin films

    Science.gov (United States)

    Abbas, Farhat; Faryad, Muhammad

    2017-11-01

    Surface plasmon-polariton (SPP) waves guided by an interface of a metal and a hyperbolic chiral sculptured thin film (STF) were theoretically investigated for optical sensing of an analyte. The chiral STF was infiltrated with the analyte to be sensed, and the resulting change in the incidence angle of excitation of the SPP waves in the prism-coupled configuration was computed. The results indicated the potential of this configuration for a plasmonic sensor with sensitivity up to 6000 degrees per refractive index units of the infiltrating fluid in the angular investigation scheme, with multiple SPP waves of the same frequency but different phase speeds, spatial profiles, and sensitivities. The enhancement in the sensitivity is attributed to the high field strength of the SPP waves near the interface. A multiplasmonic sensor is advantageous because of its potential for higher confidence in the measurement of the same analyte.

  4. Non-exhibition of Bragg phenomenon by chevronic sculptured thin films

    Science.gov (United States)

    Vepachedu, Vikas; McAtee, Patrick D.; Lakhtakia, Akhlesh

    2017-08-01

    The unit cell of a chevronic sculptured thin film (ChevSTF) comprises two identical columnar thin films (CTFs) except that the nanocolumns of the first are oriented at an angle Χ and nanocolumns of the second are oriented at an angle π - χ with respect to the interface of the two CTFs. A ChevSTF containing 10 unit cells was fabricated and its planewave reflectance and transmittance spectrums of this ChevSTF were measured. Despite its structural periodicity, the ChevSTF did not exhibit the Bragg phenomenon. Theoretical calculations with the CTFs modeled as biaxial dielectric materials indicated that the Bragg phenomenon would not be manifested for normal and near-normal incidence, but vestigial manifestation was possible for sufficiently oblique incidence.

  5. Homogeneity analysis of sculptured thin films deposited in symmetric style through glancing angle deposition technique

    International Nuclear Information System (INIS)

    Wang Bin; Qi Hong-Ji; Sun Wei; He Jun; Zhao Jiao-Ling; Wang Hu; Hou Yong-Qiang

    2014-01-01

    The symmetric deposition technique is often used to improve the uniformity of sculptured thin film (STF). In this paper, optical properties of STF with the columnar angles ±β are analyzed theoretically, based on the characteristic matrix method for extraordinary waves. Then, the transmittances of uniformity monolayer and bilayer STF in symmetrical style are calculated to show the effect of the bilayer structure on the optical properties of STF. The inhomogeneity of STF is involved in analyzing the differences in transmittance and phase retardation between monolayer and bilayer STF deposited in symmetric style. The results show that optical homogeneity of STF can be improved by depositing in symmetric style at the normal incidence, but it is not the same case as the oblique incidence. (condensed matter: electronic structure, electrical, magnetic, and optical properties)

  6. Report of digital Resources

    Directory of Open Access Journals (Sweden)

    Redazione Reti Medievali (a cura di

    2009-12-01

    Full Text Available Report of digital Resources. Making history. The changing face of the profession in Britain[12/09] Dictionary of Art Historians. A Biographical Dictionary of Historic Scholars, Museum Professionals and Academic Historians of Art  [12/09] Prosopography of Anglo-Saxon England  [12/09] Prosopography of the Byzantine World [12/09] du Cange, et al., Glossarium mediae et infimae latinitatis [12/09] Adriano Cappelli, Dizionario di abbreviature latine e italiane [12/09] Adriano Cappelli, Dizionario di abbreviature latine e italiane [12/09] Adriano Cappelli, Dizionario di abbreviature latine e italiane [12/09] La Cour de France du Moyen Age au XIXe siécle [12/09] Sculpture médiévale dans les Alpes [12/09] Associazione culturale Ad fontes [12/09] Sistema informativo degli Archivi di Stato [12/09] Archivio di Stato di Firenze [12/09] CODEX - Inventario dei manoscritti medievali della Toscana [12/09] Banche dati per la storia di Venezia dalle origini al XIX secolo [12/09] Opera di Santa Maria del Fiore, Firenze. Gli anni della Cupola. 1417-1436 [12/09] La casa delle Compere e dei Banchi di San Giorgio. 1407-1805 [12/09] Oratorio dei disciplinanti di Moneglia [12/09] Decretales di Gregorio IX [12/09] Corpus iuris canonici [12/09] Atlante della documentazione comunale (secoli XII-XIV [12/09

  7. From School to Science: Shapes and Colors of Galaxies

    Science.gov (United States)

    Fulco, M. T.; Iodice, E.

    2014-05-01

    The international conference Multi-Spin Galaxies, held at the Astronomical Observatory of Capodimonte, Naples, from September 30th to October 3rd, 2013, hosted an art competition for children of the primary schools of Naples and Caserta. They were asked to create an artistic product inspired to the theme Shapes and Colors of Galaxies. They were allowed to use any type of painting (e.g., crayons, watercolors, and pencils) or sculpture technique (e.g., clay, construction, and poor recyclable material) to express their manual skills and imagination about the most popular science among children: Astronomy.

  8. Analog/RF performance of L- and U-shaped channel tunneling field-effect transistors and their application as digital inverters

    Science.gov (United States)

    Wang, Qianqiong; Wang, Shulong; Liu, Hongxia; Li, Wei; Chen, Shupeng

    2017-06-01

    The inverter performance comparisons of L- and U-shaped channel tunneling field-effect transistors (LTFET and UTFET) are investigated by using Sentaurus TCAD tool. The RF figures of merit for these two TFETs are analyzed in terms of transconductance (g m), output conductance (g ds), gate capacitance (C gg), gate-to-source capacitance (C gs), gate-to-drain capacitance (C gd), unit-gain cut-off frequency (f T), the maximum frequency of oscillation (f MAX) and gain bandwidth product (GBW). The simulation results reveal that LTFET and UTFET have the similar DC characteristic due to the identical tunneling process. And the better RF performance LTFET provides due to it has the much smaller C gd than UTFET. Meanwhile, this work uses mixed device-circuit simulations to predict the performance of inverter circuit implemented with LTFET and UTFET for the first time. And the calculated results demonstrate LTFET is more optimization for inverter circuit design in the novel generation transistors. And all the simulation results in this paper can be used as a reference to choose the characteristic parameters of novel TFETs for inverter applications.

  9. Advanced digital optical communications

    CERN Document Server

    Binh, Le Nguyen

    2015-01-01

    This book provides a fundamental understanding of digital communication applications in optical communication technologies. Emphasizing operation principles versus mathematical analysis, the Second Edition includes new coverage of superchannel optical transmission systems, metropolitan and long-haul optical systems and networks, and Nyquist pulse shaping and high spectral efficiency of optical transmission systems, as well as new homework problems and examples. Featuring theoretical foundations as well as practical case studies, the text focuses on enhancements to digital technologies that are

  10. Thin-section microscopy of decayed crystalline marble from the garden sculptures of Schoenbrunn Palace in Vienna

    International Nuclear Information System (INIS)

    Weber, J.; Beseler, S.; Sterflinger, K.

    2007-01-01

    Sterzing marble, a crystalline white marble used in the late-Baroque garden sculptures of Schoenbrunn Palace in Vienna, was studied by means of thin-section and scanning electron microscopy in order to obtain a better understanding of its surface decay caused by atmospheric weathering. Following the classification of distinct phenomena of deterioration by visual on-site inspection, the microstructural features including surface erosion, micro-cracking, soiling, black crust formation, and microbiological infestation are exemplified by microscopical images and are briefly discussed. The results proved useful for evaluating and understanding the various types of marble decay for creating a safer basis for establishing the procedural principles aimed at conservation and maintenance of the sculptures

  11. Painted Fiberglass-Reinforced Contemporary Sculpture: Investigating Composite Materials, Techniques and Conservation Using a Multi-Analytical Approach.

    Science.gov (United States)

    Salvadori, Barbara; Cantisani, Emma; Colombini, Maria Perla; Tognon, Cecilia Gaia Rachele

    2016-01-01

    A multi-analytical approach was used to study the constituent materials, manufacturing technique, and state of conservation of a contemporary sculpture. This sculpture, entitled Nuredduna, was created by Aligi Sassu in 1995 and is located in the "Bellariva garden" in Florence (Italy). Fourier transform infrared spectroscopy (FT-IR), optical and electronic microscopy (OM and SEM-EDS), X-ray diffraction (XRD), and portable X-ray fluorescence (XRF) highlighted the multi-layered structure of the statue: fiberglass and an overlay of different layers (gel coat) applied with an unsaturated polyester resin added with aggregate materials and bromine compounds. A top-coat in acrylic black varnish, used as a finish, was also found. The combination of these materials with their different compositions, environmental impact, and even vandalism have negatively affected the state of conservation of Nuredduna, causing the loss of strata in its lower parts (legs and feet). © The Author(s) 2015.

  12. The conservation treatment of a contemporary collaged sculpture by Jiří Kolář (1914-2002

    Directory of Open Access Journals (Sweden)

    Jessica Crann

    2010-11-01

    Full Text Available Une sculpture représentant une pomme réalisée par collage de l’artiste tchèque Jiří Kolář et datant de 1972, a été soumise à un traitement de conservation-restauration. La sculpture présentait des dommages structurels causés par des facteurs externes ainsi que des surfaces encrassées. Les interrogations déontologiques soulevées lors de la restauration d’une œuvre d’art contemporain ont représenté un aspect important de l’étude. Par conséquent, la majeure partie des recherches a été dévolue à  la compréhension du matériau et de la structure, celle des intentions de l’artiste,tout comme du concept et de la signification de l’œuvre. Ce travail a été étayé par une recherche scientifique ayant pour but d’évaluer l’efficacité du Triammonium citrate comme agent de nettoyage à base aqueuse, ainsi que par une analyse de la construction en trois dimensions de l’œuvre d’art.A collaged sculpture of an apple by the Czech artist Jiří Kolář, dated 1972 was presented for conservation. The sculpture suffered from structural damage caused by external factors and ingrained surface dirt. The ethical implications raised in conserving a contemporary artwork were an important aspect and subsequently an understanding of the materials and structure, the artist’s intentions, concept and meaning of the artwork formed a large part of the research. Combined with this was scientific research into the effectiveness of Tri-ammonium Citrate as an aqueous surface cleaning agent and analysing construction of 3-Dimensional artworks.

  13. Visiting Richard Serra’s “Promenade” sculpture improves postural control and judgment of subjective visual vertical

    Science.gov (United States)

    Kapoula, Zoï; Lang, Alexandre; Lê, Thanh-Thuan; Adenis, Marie-Sarah; Yang, Qing; Lipede, Gabi; Vernet, Marine

    2014-01-01

    Body sway while maintaining an upright quiet stance reflects an active process of balance based on the integration of visual, vestibular, somatosensory, and proprioceptive inputs. Richard Serra’s Promenade sculpture featured in the 2008 Monumenta exhibition at the Grand Palais in Paris, France is herein hypothesized to have stimulated the body’s vertical and longitudinal axes as it showcased five monumental rectangular solids pitched at a 1.69° angle. Using computerized dynamic posturography we measured the body sway of 23 visitors when fixating a cross, or when observing the artwork (fixating it or actively exploring it with eye movements) before and after walking around and alongside the sculpture (i.e., before and after a promenade). A first fixation at the sculpture increased medio-lateral stability (in terms of spectral power of body sway). Eye movement exploration in the depth of the sculpture increased antero-posterior stability [in terms of spectral power and canceling time (CT) of body sway] at the expense of medio-lateral stability (in terms of CT). Moreover, a medio-lateral instability associated with eye movement exploration before the promenade (in terms of body sway sensu stricto) was canceled after the promenade. Finally, the overall medio-lateral stability (in terms of spectral power) increased after the promenade. Fourteen additional visitors were asked to stand in a dark room and adjust a luminous line to what they considered to be the earth-vertical axis. The promenade executed within the sculpted environment afforded by Serra’s monumental statuary works resulted in significantly improved performances on the subjective visual vertical test. We attribute these effects to the sculpted environment provided by the exhibition which may have acted as a kind of physiologic “training ground” thereby improving the visitors’ overall sense of visual perspective, equilibrium, and gravity. PMID:25566107

  14. Treasures ... of black wood, brilliantly polished : five examples of Taino sculpture from the tenth-sixteenth century Caribbean.

    Science.gov (United States)

    Joanna Ostapkowicz; Alex Wiedenhoeft; Christopher Bronk Ramsey; Erika Ribechini; Samuel Wilson; Fiona Brock; Tom Higham

    2011-01-01

    Five wooden sculptures from the pre-contact Caribbean, long held in museum collections, are here dated and given a context for the first time. The examples studied were made from dense Guaiacum wood, carved, polished and inlaid with shell fastened with resin. Dating the heartwood, sapwood and resins takes key examples of ‘Classic’ Ta´ýno art back to the tenth century...

  15. Digital landscapes of imagination

    Directory of Open Access Journals (Sweden)

    Starlight Vattano

    2014-05-01

    Full Text Available Urban landscapes that exist in the expression of an imaginative sequence define their shape through the digital representation. These hyperreal dimensions, combine imagination and representation as constituents a new reality, which follows the utopian, suprematist and constructivist theories, where the two-dimensional dynamics is transformed into an infinite space in which the imagination creates new forms. Although interpretations of the urban landscape film, put in place a correspondence between reality and virtuality, into the modeling of spatial movements, from which do not arise contraries, but only interdependencies. It is a particular type of representation that takes shape via the digital in motion and provides new tools for urban representation.

  16. FTIR spectroscopy of woods: A new approach to study the weathering of the carving face of a sculpture.

    Science.gov (United States)

    Emmanuel, Vartanian; Odile, Barres; Céline, Roque

    2015-02-05

    Fourier transform infrared spectroscopy (FTIR), a useful method to study woods, has been applied in order to measure an eventual gradient of water absorbed (more precisely, hydroxyl groups, OH) between the surface and the inner part of an ancient and a modern wooden sculptures. The methodology adopted has consisted in comparing FTIR bands within two spectral ranges, one corresponding to the OH content in the wood (around 3400cm(-1)) and the other to the lignin molecules (aromatic CC, around 1610cm(-1)). The ratio between the intensities of the peaks leads to a self-normalization of the measurements which avoids the effects of some experimental parameters (such as sample preparation). The results obtained show that there is a significant and progressive penetration of OH groups from the surface to the inside part of the ancient sculpture (more OH on the surface than inside the wood, due to the aging of the surface and the creation of sites which are able to fix OH groups). In contrary, for the modern one, we measure an increase of OH contents from the surface to the inner part of the sculpture. Copyright © 2014 Elsevier B.V. All rights reserved.

  17. Petrographic characterization and provenance determination of the white marbles used in the Roman sculptures of Forum Sempronii (Fossombrone, Marche, Italy)

    Science.gov (United States)

    Antonelli, Fabrizio; Columbu, Stefano; Lezzerini, Marco; Miriello, Domenico

    2014-06-01

    The Roman municipium of Forum Sempronii (Fossombrone, Marche) was located along the `Via Consolare Flaminia', in the stretch of road where it ran along the final sector of the valley of the River Metauro ( Mataurus). The ancient colony of Forum Sempronii, which is cited by Strabo, Pliny, and Ptolemy, was found in the second century BC, probably on the site of an earlier community and its activity continued until the end of the fifth century AD. During ancient and more recent archaeological excavations, many fragments of coloured stones and marbles, and some white marble sculptures have been unearthed. In this paper, we report the results of the provenance identification of the white marbles used for the sculptures found in the archaeological site of Forum Sempronii and now displayed at the local archaeological museum. The determination of the source origin of the white marbles used for the sculptures has been established by mineralogical-petrographic and geochemical analyses. Microscopic study of thin sections together with carbon and oxygen stable isotope ratios indicate that more than one type of white marbles was used: Pentelikon, Lunense, and Thasian.

  18. Incompatible building materials within the stereotomic Avalos sculptures of the Valley of Fallen (Madrid, Spain

    Directory of Open Access Journals (Sweden)

    García-Guinea, J.

    2013-03-01

    Full Text Available The examination of the recently open pit in top of head of the La Piety sculpture of Avalos confirms that the external outer of Black Limestone Calatorao (BLC composite is made by slabs 20 cm thick joined with gypsum mortars without aggregates. The analyses of these mortars samples performed by optical microscopy (OM, X-ray diffraction (XRD and Environmental Scanning Electron Microscopy with Energies Dispersive Spectrometry (ESEM-EDS techniques show hydrous admixtures composed by portlandite, mirabilite, ettringite, thaumasite and gypsum, all of them are well-know dangerous phases for a suitable preservation of the architectural heritage. The huge stereotomic structures have open access to the raining waters reaching the internal core of the sculptures made by concrete with weathered alkali-feldspar aggregates providing sodium to the surrounding sulfated environment facilitating the formation of hydrous calcium and sodium sulfates such as ettringite and mirabilite which reduces the inter-grains adherence.

    El estudio de un boquete abierto recientemente en la cabeza de la escultura de la Piedad de Avalos confirma que está recubierta por placas caliza negra de Calatorao (CNC de unos 20 cm de espesor sujetas con morteros de yeso sin áridos. El análisis de estas muestras de morteros mediante microscopía óptica (MO, difracción de rayos X (DRX y Microscopía Electrónica de Barrido Ambiental con Espectroscopia de Dispersión de Energías dispersivas de rayos X (MEBA-EDS muestra mezclas de portlandita, mirabilita, etringita, taumasita y yeso, es decir, fases hidratadas bien conocidas por ser peligrosas para una adecuada preservación del patrimonio arquitectónico. Las gigantescas estructuras estereotómicas de Avalos están abiertas a las aguas de lluvia llegando a alcanzar sus núcleos de hormigón, que tienen áridos de granitos con feldespatos alcalinos alterados que están aportando sodio al ambiente sulfatado formando nuevos sulfatos

  19. Dye sensitized solar cells based on nanowire sculptured thin film titanium dioxide photoanodes

    Science.gov (United States)

    Pursel, Sean M.

    Energy harvested from the sun using photovoltaics (PVs) is a renewable resource in high demand. Photovoltaics convert photons into electron-hole pairs which are then separated and used for electrical power. 75 TW of energy arrives from the sun every year onto US soil. Harvesting it all would provide enough energy to power the entire world for more than five years. It is this abundance of energy that makes PVs an attractive alternative to fossil fuels. PVs currently produce 0.15% of the energy consumed in the US. Production needs to grow as the worldwide demand for energy is projected to almost double by 2050. Fundamental and device based PV research have made steady efficiency gains in silicon based devices and thin film devices have started to become commercially viable. However, less expensive devices with suitable efficiency have not been fully developed. Dye sensitized solar cells (DSSCs) are one such device which has been optimized using standard components. However, device efficiency has not increased significantly since DSSCs were first conceived in 1991. Interestingly, none of the standard components are optimized, but act in a synergistic way in the most efficient devices. This research, along with other parallel research, attempts to optimize a single component of DSSCs with the goal of combining efforts to produce a device with increased efficiency. This research attempts to optimize the TiO2 photoanode used in DSSCs in terms of electron collection, dye coverage, light harvesting, and novel electrolyte infiltration by replacing the standard colloidal structure with nanowires deposited using physical vapor deposition at an oblique angle to form sculptured thin films. The results are quantified through standard photovoltaic testing, electrochemical impedance spectroscopy, UV-Vis-NIR spectroscopy, and general materials characterization techniques. The nanowire photoanodes are engineered during deposition using reactive evaporation, substrate heating

  20. Application of digital radiography in the analysis of cultural heritage

    International Nuclear Information System (INIS)

    Oiveira, Davi F.; Calza, Cristiane; Rocha, Henrique S.; Nascimento, Joseilson R.; Lopes, Ricardo T.

    2013-01-01

    The scientific examination of artworks has gained increasing interest in the last years, allowing the characterization of materials and techniques employed by the artists. This analysis can be extremely valuable to conservation and restoration treatments. However, the fact that every artworks is a unique piece emphasizes the necessity of working with non-destructive techniques. Although radiography has been used in the technical examination of museum objects for many decades, digital radiography is rapidly becoming a preferred modality for this essential tool in the advanced examination of works of art. The ability to electronically combine images from the large painting into a single composite image file was extremely valuable and results in higher quality images than those achieved with conventional radiography. These images can be also processed and improved using adequate software. Additional advantages of digital radiography include the possibility of an almost immediate analysis of the results, use of an only recording film and absence of chemical processing. Radiographic imaging can be applied to the analysis of virtually all media including paintings, sculptures, woodworks, engravings, etc. This paper reports some case studies of the use of digital radiography in the study of paintings and sculptures, showing the feasibility and advantages of this technique for this kind of purpose. The radiographic images revealed the conservation state of the analyzed objects and various details of its execution in order to assist recently restoration processes. (author)

  1. Application of digital radiography in the analysis of cultural heritage

    Energy Technology Data Exchange (ETDEWEB)

    Oiveira, Davi F.; Calza, Cristiane; Rocha, Henrique S.; Nascimento, Joseilson R.; Lopes, Ricardo T., E-mail: davi@lin.ufrj.br, E-mail: ccalza@lin.ufrj.br, E-mail: henrique@lin.ufrj.br, E-mail: joseilson@lin.ufrj.br, E-mail: ricardo@lin.ufrj.br [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Lab. de Instrumentacao Nuclear

    2013-07-01

    The scientific examination of artworks has gained increasing interest in the last years, allowing the characterization of materials and techniques employed by the artists. This analysis can be extremely valuable to conservation and restoration treatments. However, the fact that every artworks is a unique piece emphasizes the necessity of working with non-destructive techniques. Although radiography has been used in the technical examination of museum objects for many decades, digital radiography is rapidly becoming a preferred modality for this essential tool in the advanced examination of works of art. The ability to electronically combine images from the large painting into a single composite image file was extremely valuable and results in higher quality images than those achieved with conventional radiography. These images can be also processed and improved using adequate software. Additional advantages of digital radiography include the possibility of an almost immediate analysis of the results, use of an only recording film and absence of chemical processing. Radiographic imaging can be applied to the analysis of virtually all media including paintings, sculptures, woodworks, engravings, etc. This paper reports some case studies of the use of digital radiography in the study of paintings and sculptures, showing the feasibility and advantages of this technique for this kind of purpose. The radiographic images revealed the conservation state of the analyzed objects and various details of its execution in order to assist recently restoration processes. (author)

  2. Irregular Shaped Building Design Optimization with Building Information Modelling

    Directory of Open Access Journals (Sweden)

    Lee Xia Sheng

    2016-01-01

    Full Text Available This research is to recognise the function of Building Information Modelling (BIM in design optimization for irregular shaped buildings. The study focuses on a conceptual irregular shaped “twisted” building design similar to some existing sculpture-like architectures. Form and function are the two most important aspects of new buildings, which are becoming more sophisticated as parts of equally sophisticated “systems” that we are living in. Nowadays, it is common to have irregular shaped or sculpture-like buildings which are very different when compared to regular buildings. Construction industry stakeholders are facing stiff challenges in many aspects such as buildability, cost effectiveness, delivery time and facility management when dealing with irregular shaped building projects. Building Information Modelling (BIM is being utilized to enable architects, engineers and constructors to gain improved visualization for irregular shaped buildings; this has a purpose of identifying critical issues before initiating physical construction work. In this study, three variations of design options differing in rotating angle: 30 degrees, 60 degrees and 90 degrees are created to conduct quantifiable comparisons. Discussions are focused on three major aspects including structural planning, usable building space, and structural constructability. This research concludes that Building Information Modelling is instrumental in facilitating design optimization for irregular shaped building. In the process of comparing different design variations, instead of just giving “yes or no” type of response, stakeholders can now easily visualize, evaluate and decide to achieve the right balance based on their own criteria. Therefore, construction project stakeholders are empowered with superior evaluation and decision making capability.

  3. Artificial immune algorithm implementation for optimized multi-axis sculptured surface CNC machining

    Science.gov (United States)

    Fountas, N. A.; Kechagias, J. D.; Vaxevanidis, N. M.

    2016-11-01

    This paper presents the results obtained by the implementation of an artificial immune algorithm to optimize standard multi-axis tool-paths applied to machine free-form surfaces. The investigation for its applicability was based on a full factorial experimental design addressing the two additional axes for tool inclination as independent variables whilst a multi-objective response was formulated by taking into consideration surface deviation and tool path time; objectives assessed directly from computer-aided manufacturing environment A standard sculptured part was developed by scratch considering its benchmark specifications and a cutting-edge surface machining tool-path was applied to study the effects of the pattern formulated when dynamically inclining a toroidal end-mill and guiding it towards the feed direction under fixed lead and tilt inclination angles. The results obtained form the series of the experiments were used for the fitness function creation the algorithm was about to sequentially evaluate. It was found that the artificial immune algorithm employed has the ability of attaining optimal values for inclination angles facilitating thus the complexity of such manufacturing process and ensuring full potentials in multi-axis machining modelling operations for producing enhanced CNC manufacturing programs. Results suggested that the proposed algorithm implementation may reduce the mean experimental objective value to 51.5%

  4. Ancient lenses in art and sculpture and the objects viewed through them, dating back 4500 years

    Science.gov (United States)

    Enoch, Jay M.

    1998-07-01

    The early history of lenses is controversial. The author has sought to address the problem by identifying lens elements (mainly convex/plano) which remain associated with objects intended to be viewed through them (i.e., in their original context). These are found in museums in sculptures, rings, pendants, etc. A number of outstanding examples will be illustrated in the talk; these sophisticated pieces of art are certainly not first constructs. Most are of rock crystal, rose quartz, or glass. Lenses have origin among artisans rather than scientists. Clearly, skills were often lost and rediscovered. Early lens-like objects have been found broadly in the eastern Mediterranean area/Middle East, in France, in Italy (Rome), and possibly in Peru and Scandinavia, etc. To date, the earliest lenses identified in context are from the IV/V Dynasties of Egypt, dating back to about 4500 years ago (e.g., the superb `Le Scribe Accroupi' and `the Kai' in the Louvre; added fine examples are located in the Cairo Museum). Latter examples have been found in Knossos (Minoan [Herakleion Museum]; ca. 3500 years ago); others had origin in Greece (examples in the Athens National Archeological Museum and the British Museum equals BM), in Rome (Metropolitan Museum, NY; BM; Vatican Museums; Bologna Archeological Museum), etc. Also. of great interest is the study of possible lens applications. This is a fascinating scientific, artistic and intellectual project.

  5. Stereoscopic CAD and Environmental Sculpture: Enhancement of the Design Process in the Visual Arts

    Science.gov (United States)

    Fisher, Robert N.; Bandini, Pier L.

    1989-09-01

    In this paper, co-authors Robert Fisher and Pier Luigi Bandini describe their personal observations concerning stereo enhancements of computer graphics images employed in their research. in Part One, Robert Fisher, a professional sculptor, Professor and Artist-in-Residence in the College of Engineering at Penn State, cites three recent environmental sculpture projects: "See-scape," "A Page from the Book of Skies," and an as yet untitled work. Wireframe images, interior views of architectural spaces, and complex imagery are rendered comprehensible by stereo 3-D. In Part Two, Pier L. Bandini, Associate Professor of Architecture and Director of the Architecture CAD Lab at Penn State, describes the virtues of the stereo-enhanced wireframe model--the benefits of the "see-through coupled with a complete awareness of the whole space." The final example, of a never-realized XVIII-century project, suggests a new and profound application of stereo 3-D to historical inquiry, namely, the experience of ancient spaces and structures that are no longer existing or that were never constructed.

  6. Nonexhibition of Bragg phenomenon by chevronic sculptured thin films: experiment and theory

    Science.gov (United States)

    Vepachedu, Vikas; McAtee, Patrick D.; Lakhtakia, Akhlesh

    2017-07-01

    The unit cell of a chevronic sculptured thin film (ChevSTF) comprises two identical columnar thin films (CTFs) except that the nanocolumns of the first are oriented at an angle χ and nanocolumns of the second are oriented at an angle π-χ with respect to the interface of the two CTFs. A ChevSTF containing 10 unit cells was fabricated using resistive-heating physical vapor deposition of zinc selenide. Planewave reflectance and transmittance spectrums of this ChevSTF were measured for a wide variety of incidence conditions over the 500- to 900-nm range of the free-space wavelength. Despite its structural periodicity, the ChevSTF did not exhibit the Bragg phenomenon. Theoretical calculations with the CTFs modeled as biaxial dielectric materials indicated that the Bragg phenomenon would not be manifested for normal and near-normal incidence, but vestigial manifestation was possible for sufficiently oblique incidence. Thus, structural periodicity does not always lead to electromagnetic periodicity that underlies the exhibition of the Bragg phenomenon.

  7. Three Essays on Digital Evolution

    Science.gov (United States)

    Zhang, Zhewei

    2016-01-01

    Digital products are rapidly shaping our world into a ubiquitous computing world. Because of its unique characteristics, digital artifacts are generative and highly evolving through the recombination of existing elements as well as by the invention of new elements. In this thesis, I first propose an evolutionary view to examine how digital…

  8. Schapiro Shapes

    Science.gov (United States)

    O'Connell, Emily

    2009-01-01

    This article describes a lesson on Schapiro Shapes. Schapiro Shapes is based on the art of Miriam Schapiro, who created a number of works of figures in action. Using the basic concepts of this project, students learn to create their own figures and styles. (Contains 1 online resource.)

  9. Digital Media Shapes Youth Participation in Politics

    Science.gov (United States)

    Kahne, Joseph; Middaugh, Ellen

    2012-01-01

    Will those who Tweet vote? Social media clearly create new opportunities for voice, for agency, and potentially for influence. But they create risks as well, because there is no reason to assume that engagement with participatory politics will inevitably or organically develop in positive ways. That's where schools come into the picture, playing…

  10. Optimization of digitization procedures in cultural heritage preservation

    Science.gov (United States)

    Martínez, Bea; Mitjà, Carles; Escofet, Jaume

    2013-11-01

    The digitization of both volumetric and flat objects is the nowadays-preferred method in order to preserve cultural heritage items. High quality digital files obtained from photographic plates, films and prints, paintings, drawings, gravures, fabrics and sculptures, allows not only for a wider diffusion and on line transmission, but also for the preservation of the original items from future handling. Early digitization procedures used scanners for flat opaque or translucent objects and camera only for volumetric or flat highly texturized materials. The technical obsolescence of the high-end scanners and the improvement achieved by professional cameras has result in a wide use of cameras with digital back to digitize any kind of cultural heritage item. Since the lens, the digital back, the software controlling the camera and the digital image processing provide a wide range of possibilities, there is necessary to standardize the methods used in the reproduction work leading to preserve as high as possible the original item properties. This work presents an overview about methods used for camera system characterization, as well as the best procedures in order to identify and counteract the effect of the lens residual aberrations, sensor aliasing, image illumination, color management and image optimization by means of parametric image processing. As a corollary, the work shows some examples of reproduction workflow applied to the digitization of valuable art pieces and glass plate photographic black and white negatives.

  11. Determination of weathering and conservation of sculptured stone by use of the laser method

    International Nuclear Information System (INIS)

    Aaberg, G.; Stijfhoorn, D.E.

    1996-09-01

    Weathering and deterioration of sculptured stone and masonry is a natural process which stars at the same moment the stone is quarried and exposed to exogenous conditions. This process of natural decay has, however, been accelerated due to the emission of different man-made pollutants, domestic and industrial, local and global. The ISOLASER project is based on the laser microprobe technique for determining the depth of natural and induced weathering and the effect of conservation measures of cultural objects of carbonaceous sandstone and marble/limestone. The purpose of the project is to determine the depth of weathering and depth of penetration of conservation agents in unweathered calcite-cemented stone and the weathering profile in linseed oil-treated stone after accelerated weathering cycles in a climatic chamber. The analytical results show that even after such a short period as five weeks of exposure the effect of SO 2 , NO 2 and elevated humidity on Gotland sandstone can be easily observed in a change of the δ 13 C values in the outermost 2 mm of the stone. Treating the sample with linseed oil has a preserving effect on the rock and hinders the deteriorating effect of SO 2 and NO 2 . The oil treatment even preserves the signature of previously incorporated organic carbon. Compilation of a questionnaire representing a broad field within natural sciences in cultural heritage research in Europe, shows an overwhelming positive approach to the project as such. The questioned researchers consider the laser method particularly useful as a complementary method in other investigations and states that the method can without doubt give new dimensions to the analysis of important cultural objects. 2 refs., 6 figs

  12. [Digital cephalometrics

    NARCIS (Netherlands)

    Ongkosuwito, E.M.; Katsaros, C.; Bodegom, J.C.; Kuijpers-Jagtman, A.M.

    2004-01-01

    There are different methods to produce digital head films and all have advantages and disadvantages. With a digital head film and a computer programme for digital cephalometry an analysis can be performed easily. All existing computer programmes for digital cephalometry use reference values to

  13. Critical Digital Tourism Studies

    DEFF Research Database (Denmark)

    Gyimóthy, Szilvia; Munar, Ana María

    2013-01-01

    dimensions, ethics, and cultural values shaping digital tourism). This proposal contributes to increasing research reflexivity in understanding how tourism is enacted through digital worlds and how digital technologies evolve through tourism practices. Critical-thinking and socio-political engagement......This paper advocates the need for a critical and cross-disciplinary research agenda on the field of digital technologies and tourism. The changing virtual landscape of tourism has received increased attention by tourism scholars. However, contemporary studies on information technologies (IT......) are approached mostly from a business administration perspective and informed by conceptual frameworks developed in management and marketing. IT studies in tourism are still at a stage similar to the first advocacy phase of tourism research in general (Jafari, 1990) and are seldom inspired by relevant...

  14. Digital squares

    DEFF Research Database (Denmark)

    Forchhammer, Søren; Kim, Chul E

    1988-01-01

    Digital squares are defined and their geometric properties characterized. A linear time algorithm is presented that considers a convex digital region and determines whether or not it is a digital square. The algorithm also determines the range of the values of the parameter set of its preimages. ....... The analysis involves transforming the boundary of a digital region into parameter space of slope and y-intercept......Digital squares are defined and their geometric properties characterized. A linear time algorithm is presented that considers a convex digital region and determines whether or not it is a digital square. The algorithm also determines the range of the values of the parameter set of its preimages...

  15. Pigment identification on "Pietà" of Barletta, example of Renaissance Apulian sculpture: a Raman microscopy study.

    Science.gov (United States)

    Marano, D; Catalano, I M; Monno, A

    2006-08-01

    A study of the original painting layer of the "Pietà" of Barletta, a polychrome statue, important example of Renaissance Apulian sculpture, was performed by mu-Raman spectroscopy. Vermilion was identified in the original layer of the blood drops on Jesus knee. Lazurite was identified as the original blue pigment on Our Lady's veil and lace, currently a yellow ochre-like color. The use of lazurite demonstrates the historical-artistic importance of this polychrome statue, and supports the hypothesis that this artwork was probably commissioned by Our Lady's devotees to itinerant artists inspired by the more precious Vesperbilder model.

  16. Fabrication of graded helical square tower-like Mn sculptured thin films and investigation of their electrical properties: comparison with perturbation theory

    Science.gov (United States)

    Fakharpour, Mahsa; Savaloni, Hadi

    2017-06-01

    Mn sculptured thin films were fabricated in form of graded helical square tower-like terraced sculptured Mn thin films (GHSTTS) using oblique angle deposition together with rotation of substrate about its surface normal with fixed rotation angle (90°) and a shadowing block which was fixed at the centre of the substrate holder. The anisotropy of the samples was examined by resistivity measurements at two orthogonal angles. Direct relationship is obtained between resistivity and the anisotropy of the produced samples which showed that both of these parameters increase with decreasing distance from the edge of the shadowing block. Simulation work using the perturbation theory produced results consistent with the experimental observations.

  17. Digital Culture and Digital Library

    Directory of Open Access Journals (Sweden)

    Yalçın Yalçınkaya

    2016-12-01

    Full Text Available In this study; digital culture and digital library which have a vital connection with each other are examined together. The content of the research consists of the interaction of culture, information, digital culture, intellectual technologies, and digital library concepts. The study is an entry work to integrity of digital culture and digital library theories and aims to expand the symmetry. The purpose of the study is to emphasize the relation between the digital culture and digital library theories acting intersection of the subjects that are examined. Also the perspective of the study is based on examining the literature and analytical evaluation in both studies (digital culture and digital library. Within this context, the methodology of the study is essentially descriptive and has an attribute for the transmission and synthesis of distributed findings produced in the field of the research. According to the findings of the study results, digital culture is an inclusive term that describes the effects of intellectual technologies in the field of information and communication. Information becomes energy and the spectrum of the information is expanding in the vertical rise through the digital culture. In this context, the digital library appears as a new living space of a new environment. In essence, the digital library is information-oriented; has intellectual technology support and digital platform; is in a digital format; combines information resources and tools in relationship/communication/cooperation by connectedness, and also it is the dynamic face of the digital culture in time and space independence. Resolved with the study is that the digital libraries are active and effective in the formation of global knowing and/or mass wisdom in the process of digital culture.

  18. "Petit Granit": a Belgian limestone used in heritage, construction and sculpture.

    Science.gov (United States)

    Pereira, Dolores; Touneur, Francis; Bernáldez, Lorenzo; García Blázguez, Ana

    2014-05-01

    "Petit Granit" is a Lower Carboniferous (Tournaisian) grey-bluish crinoidal limestone that becomes shiny black when polished. The rock is known under several other names like Pierre Bleue (Blue Stone), but at the same time it should not be confused with other natural stones having a similar commercial name (e.g. Chinese Bluestone or Irish Bluestone) which are superficially similar limestones. It consists of around 96% microcrystalline calcite and a high proportion of fossils, mainly crinoids. In addition some dolomite, quartz, pyrite, marcasite and fluorite are present. Around fifteen quarries are active these days, employing almost one thousand people and thus is an important part of the natural stone economy in Belgium. "Petit Granit" has an Appellation d'Origine Locale (Local Appellation of Origin) designation since 1999. It has been extracted in several regions of South Belgium since the Middle Ages. In a sense the name is misleading because it is not an igneous rock and therefore not a true granite, but it derives from the profusion of numerous white fossil fragments in a dark carbonaceous matrix which look similar to feldspar crystals in a granitic background. The stone characterizes many façades of the urban architecture of Brussels and other Belgian cities, and since the second half of the 19th century it has been used in various countries in Europe and overseas. Its high density and uniformity mean that it takes an excellent polish and thus has versatile use as a dimension stone. "Petit Granit" has also been used widely in sculpture and architecture by several well known artists (e.g. Mateo Hernández, Michel Smolders, Tom Blatt, Elise Delbrassinne, Benoît Luyckx, Santiago Calatrava, among others). However, deterioration has been observed when it has been used for exterior purposes, and appropriate measures need to be taken to prevent this. This stone can be considered as Global Heritage Stone Resource in Europe, for both its use in construction and for

  19. The materials and techniques used in a baroque sculpture representing Saint Dominic from the Museum of Santa Maria de Lamas

    Directory of Open Access Journals (Sweden)

    Carolina Barata

    2007-01-01

    Full Text Available A polychrome wooden sculpture from the Museum of Santa Maria de Lamas (Northern Portugal, representing the image of Saint Dominic, produced in the first half of the 18th century, was studied for the identification of the materials and techniques employed in its fine modelling. Radiography was used for the study of the construction details of the wooden support, optical microscopy (OM and polarized light microscopy (PLM for the characterization of the paint layers and energy dispersive X-ray spectrometry (EDXRF, Fourier transform infrared spectroscopy (FTIR and microchemical tests for the identification of pigments and fillers.The identified materials were common to the period when the sculpture was made: gypsum, gold leaf, bole,white lead, brown ochre, vermillion, a black pigment made of carbon (possibly mixed with verdigris, used as a drier, a red lake and a calcium compound used as filler. However, regarding the techniques employed, and probably due to economic reasons, it seems that the recommended practice in art treatises and working contracts was not completely followed in what concerns the ground layers. Similar reasons appear to have caused the use of white lead mixed with a calcium compound, as a filler, in the less expressive areas, and should explain the fact that the estofado techniques (simulation of brocaded vestment have been limited to the visible areas at the front.

  20. Can AFLP genome scans detect small islands of differentiation? The case of shell sculpture variation in the periwinkle Echinolittorina hawaiiensis.

    Science.gov (United States)

    Tice, K A; Carlon, D B

    2011-08-01

    Genome scans have identified candidate regions of the genome undergoing selection in a wide variety of organisms, yet have rarely been applied to broadly dispersing marine organisms experiencing divergent selection pressures, where high recombination rates can reduce the extent of linkage disequilibrium (LD) and the ability to detect genomic regions under selection. The broadly dispersing periwinkle Echinolittorina hawaiiensis exhibits a heritable shell sculpture polymorphism that is correlated with environmental variation. To elucidate the genetic basis of phenotypic variation, a genome scan using over 1000 AFLP loci was conducted on smooth and sculptured snails from divergent habitats at four replicate sites. Approximately 5% of loci were identified as outliers with Dfdist, whereas no outliers were identified by BayeScan. Closer examination of the Dfdist outliers supported the conclusion that these loci were false positives. These results highlight the importance of controlling for Type I error using multiple outlier detection approaches, multitest corrections and replicate population comparisons. Assuming shell phenotypes have a genetic basis, our failure to detect outliers suggests that the life history of the target species needs to be considered when designing a genome scan. © 2011 The Authors. Journal of Evolutionary Biology © 2011 European Society For Evolutionary Biology.

  1. Digital setup for Doppler broadening spectroscopy

    International Nuclear Information System (INIS)

    Cizek, J; Vlcek, M; Prochazka, I

    2011-01-01

    New digital spectrometer for measurement of the Doppler shift of annihilation photons was developed and tested in this work. Digital spectrometer uses a fast 12-bit digitizer for direct sampling of signals from HPGe detectors. Analysis of sampled waveforms is performed off-line in software. Performance of the new digital setup was compared with its traditional analogue counterpart. Superior energy resolution was achieved in the digital setup. Moreover, the digital setup allows for a better control of the shape of detector signals. This enables to eliminate undesired signals damaged by pile-up effects or by ballistic deficit.

  2. Linguistics and the digital humanities

    DEFF Research Database (Denmark)

    Jensen, Kim Ebensgaard

    2014-01-01

    Corpus linguistics has been closely intertwined with digital technology since the introduction of university computer mainframes in the 1960s. Making use of both digitized data in the form of the language corpus and computational methods of analysis involving concordancers and statistics software......, corpus linguistics arguably has a place in the digital humanities. Still, it remains obscure and figures only sporadically in the literature on the digital humanities. This article provides an overview of the main principles of corpus linguistics and the role of computer technology in relation to data...... and method and also offers a bird's-eye view of the history of corpus linguistics with a focus on its intimate relationship with digital technology and how digital technology has impacted the very core of corpus linguistics and shaped the identity of the corpus linguist. Ultimately, the article is oriented...

  3. Digital Tectonics

    DEFF Research Database (Denmark)

    Christiansen, Karl; Borup, Ruben; Søndergaard, Asbjørn

    2014-01-01

    Digital Tectonics treats the architectonical possibilities in digital generation of form and production. The publication is the first volume of a series, in which aspects of the strategic focus areas of the Aarhus School of Architecture will be disseminated.......Digital Tectonics treats the architectonical possibilities in digital generation of form and production. The publication is the first volume of a series, in which aspects of the strategic focus areas of the Aarhus School of Architecture will be disseminated....

  4. Digital skrivedidaktik

    DEFF Research Database (Denmark)

    Digital skrivedidaktik består af to dele. Første del præsenterer teori om skrivekompetence og digital skrivning. Digital skrivning er karakteriseret ved at tekster skrives på computer og med digitale værktøjer, hvilket ændrer skrivningens traditionelle praksis, produkt og processer. Hvad er digital...... om elevens skriveproces) og Blogskrivning (der styrker eleverne i at bruge blogs i undervisningen)....

  5. DIGITAL FORGERY

    OpenAIRE

    Sarhan M. Musa1

    2017-01-01

    Forgery is the criminal act that provides misleading information about a product or service. It is the process of making, adapting, or imitating documents or objects with the intent to deceive. Digital forgery (or digital tampering) is the process of manipulating documents or images for the intent of financial, social or political gain. This paper provides a brief introduction to the digital forgery.

  6. Digital Citizenship

    Science.gov (United States)

    Isman, Aytekin; Canan Gungoren, Ozlem

    2014-01-01

    Era in which we live is known and referred as digital age.In this age technology is rapidly changed and developed. In light of these technological advances in 21st century, schools have the responsibility of training "digital citizen" as well as a good citizen. Digital citizens must have extensive skills, knowledge, Internet and …

  7. Review of ‘Sculpture Victorious: Art in an Age of Invention, 1837–1901’ at Tate Britain, 25 February to 25 May 2015

    Directory of Open Access Journals (Sweden)

    Clare Walker Gore

    2016-06-01

    Full Text Available This article reviews the exhibition ‘Sculpture Victorious’, which ran at Tate Britain from 25 February to 25 May 2015. It describes the exhibition, considers the curators’ approach in the wider context of nineteenth-century studies, and assesses its implications for the field.

  8. Computer Instructional Approach and Students' Creative Ability in Sculpture Education in Nigeria Universities: Obafemi Awolowo University as a Case Study

    Science.gov (United States)

    Abass, Bada Tayo

    2011-01-01

    This paper assessed the use of computer assisted instruction in enhancing students' creative ability in sculpture education in Obafemi Awolowo University, Ile-Ife. The study adopted non- randomized pretest, posttest control group. Data were analyzed using mean, standard deviation and analysis of Covariance (ANCOVA). The mean score were used in…

  9. Beating the wavelength limit: three-dimensional imaging of buried subwavelength fractures in sculpture and construction materials by terahertz time-domain reflection spectroscopy.

    Science.gov (United States)

    Schwerdtfeger, M; Castro-Camus, E; Krügener, K; Viöl, W; Koch, M

    2013-01-20

    We use reflection terahertz spectroscopy to locate and produce three-dimensional images of air gaps between stones that resemble fractures, even of subwavelength thicknesses. This technique is found to be promising tool for sculpture and building damage evaluation as well as structural quality control in other dielectric materials.

  10. Digital preservation

    CERN Document Server

    Deegan, Marilyn

    2013-01-01

    Digital preservation is an issue of huge importance to the library and information profession right now. With the widescale adoption of the internet and the rise of the world wide web, the world has been overwhelmed by digital information. Digital data is being produced on a massive scale by individuals and institutions: some of it is born, lives and dies only in digital form, and it is the potential death of this data, with its impact on the preservation of culture, that is the concern of this book. So how can information professionals try to remedy this? Digital preservation is a complex iss

  11. Research on digital multi-channel pulse height analysis techniques

    International Nuclear Information System (INIS)

    Xiao Wuyun; Wei Yixiang; Ai Xianyun; Ao Qi

    2005-01-01

    Multi-channel pulse height analysis techniques are developing in the direction of digitalization. Based on digital signal processing techniques, digital multi-channel analyzers are characterized by powerful pulse processing ability, high throughput, improved stability and flexibility. This paper analyzes key techniques of digital nuclear pulse processing. With MATLAB software, main algorithms are simulated, such as trapezoidal shaping, digital baseline estimation, digital pole-zero/zero-pole compensation, poles and zeros identification. The preliminary general scheme of digital MCA is discussed, as well as some other important techniques about its engineering design. All these lay the foundation of developing homemade digital nuclear spectrometers. (authors)

  12. Shape Shifting

    DEFF Research Database (Denmark)

    Gottlieb, Stefan; Hundebøl, Jesper; Larsen, Casper Schultz

    2009-01-01

    In this paper we are concerned with the specific effects of a 3D building model produced and reproduced in the planning and construction phases on a particular construction project. We contrast these effects with the policy intentions expressed within a state funded, public initiative that aims...... to promote so-called ‘digital construction' in Denmark. One of the main objectives of this initiative is to ensure better coordination between the different phases of the building project through the application of 3D Building Information Models (BIM). The intentions are to improve the construction phase...... by providing pervasive on-site planning and logistics, where the 3D building model combined with process-data developed and maintained by the individual contractor should facilitate the production of detailed step-by-step production planning in the form of ‘production cards'. The empirical findings from...

  13. Digital entrepreneurship in a resource-scarce context: A focus on entrepreneurial digital competencies

    OpenAIRE

    Ngoasong, Michael Zisuh

    2017-01-01

    Purpose – Thepurpose of this paper is to criticallyexplorehow context asan antecedent to entrepreneurial digital competencies (EDCs) influences digital entrepreneurship in a resource-scarce environment.\\ud Design/methodology/approach – The data comprises semi-structured interviews with 16 digital entrepreneurs, as owner-managers of small digital businesses in Cameroon.\\ud Findings – The results reveal the ways in which EDCs shape the entry (or start-up) choices and post-entry strategic decisi...

  14. Surface enhanced Raman spectroscopy and structural characterization of Ag/Cu chiral nano-flower sculptured thin films

    International Nuclear Information System (INIS)

    Savaloni, Hadi; Babaei, Reza

    2013-01-01

    Silver chiral nano-flower sculptured thin films with 3-, 4- and 5-fold symmetry were produced on copper substrates using oblique angle deposition method in conjunction with rotation of sample holder with different speeds at different sectors of each revolution corresponding to symmetry order of the acquired nano-flower. Atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) were employed to obtain morphologies and nano-structure of the films. Raman spectroscopy was performed on all samples that were subject to impregnation by 4,4′-bipyridine (C 10 H 8 N 2 ) solution. A high degree of enhancement of the main bands at 1610, 1297, and 1009 cm −1 that can be assigned to the C=C stretching mode, aromatic ring stretching ring and in-plane ring mode of 4,4′-bipyridine, is achieved.

  15. Surface enhanced Raman spectroscopy and structural characterization of Ag/Cu chiral nano-flower sculptured thin films

    Energy Technology Data Exchange (ETDEWEB)

    Savaloni, Hadi, E-mail: savaloni@khayam.ut.ac.ir [Department of Physics, University of Tehran, North-Kargar Street, Tehran (Iran, Islamic Republic of); Babaei, Reza, E-mail: reza_babaee_62@yahoo.com [Department of Physics, Islamic Azad University, Science and Research Branch, Tehran (Iran, Islamic Republic of)

    2013-09-01

    Silver chiral nano-flower sculptured thin films with 3-, 4- and 5-fold symmetry were produced on copper substrates using oblique angle deposition method in conjunction with rotation of sample holder with different speeds at different sectors of each revolution corresponding to symmetry order of the acquired nano-flower. Atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) were employed to obtain morphologies and nano-structure of the films. Raman spectroscopy was performed on all samples that were subject to impregnation by 4,4′-bipyridine (C{sub 10}H{sub 8}N{sub 2}) solution. A high degree of enhancement of the main bands at 1610, 1297, and 1009 cm{sup −1} that can be assigned to the C=C stretching mode, aromatic ring stretching ring and in-plane ring mode of 4,4′-bipyridine, is achieved.

  16. Terracotta polychrome sculptures examined before and after their conservation work: contributions from non-invasive in situ analytical techniques.

    Science.gov (United States)

    Colombo, C; Bevilacqua, F; Brambilla, L; Conti, C; Realini, M; Striova, J; Zerbi, G

    2011-08-01

    The potential of non-invasive in situ analytical techniques such as portable Raman, portable X-ray fluorescence, portable optical microscope and fibre optics reflectance spectroscopy has been shown studying painted layers of Renaissance terracotta polychrome sculptures belonging to the statuary of Santo Sepolcro Church in Milan. The results obtained allowed pointing out the contribution of these techniques to the compositional diagnostic, providing complete information, in some cases, better than micro-destructive techniques, on the kind of pigments used on the external painted layers. Moreover, a comparison with the results obtained before the last conservation work (2009) with micro-destructive techniques allowed ascertaining the removal of the external painted layers during the conservation operations.

  17. A theory of shape identification

    CERN Document Server

    Cao, Frédéric; Morel, Jean-Michel; Musé, Pablo; Sur, Frédéric

    2008-01-01

    Recent years have seen dramatic progress in shape recognition algorithms applied to ever-growing image databases. They have been applied to image stitching, stereo vision, image mosaics, solid object recognition and video or web image retrieval. More fundamentally, the ability of humans and animals to detect and recognize shapes is one of the enigmas of perception. The book describes a complete method that starts from a query image and an image database and yields a list of the images in the database containing shapes present in the query image. A false alarm number is associated to each detection. Many experiments will show that familiar simple shapes or images can reliably be identified with false alarm numbers ranging from 10-5 to less than 10-300. Technically speaking, there are two main issues. The first is extracting invariant shape descriptors from digital images. The second is deciding whether two shape descriptors are identifiable as the same shape or not. A perceptual principle, the Helmholtz princi...

  18. Sculpturing patterns of plasmonic silver nanoprisms by means of photocatalytic lithography

    Science.gov (United States)

    Panzarasa, Guido; Soliveri, Guido; Marra, Gianluigi; Meda, Laura; Savoini, Alberto; Ardizzone, Silvia; Salvalaggio, Mario

    2017-04-01

    The controlled shaping of nanoparticles’ morphology is one of the pillars of nanotechnology. Here, we demonstrate that photocatalytic lithography, a technique already proved to be useful in materials science, can act as a dry etching technique for noble metal nanoparticles. Triangular silver nanoprisms are self-assembled on titanium dioxide films and photocatalytically shaped into discoidal particles upon irradiation with near-UV light. The obtained patterned surfaces show a dramatically different surface-enhanced Raman scattering response, suggesting the utility of our approach for the development of sensors. The photocatalytic nature of the particle shaping is demonstrated and a plausible mechanism drawn by performing photocatalysis in different configurations (direct and remote) and by irradiating in different solvents.

  19. Une alternative à la sculpture en bois polychromé: les draperies de toiles apprêtées, façonnées et peintes

    Directory of Open Access Journals (Sweden)

    Florence Carly

    2010-11-01

    Full Text Available La technique de la toile « empesée », enduite et peinte semble avoir été employée dès le XVIesiècle en Italie. Elle est à ce jour peu connue et non étudiée. Mise en œuvre dans un but de réalisme, de légèreté, d’économie de temps ou de moyens, elle simule les drapés des sculptures. Les œuvres comportant de la toile apprêtée, façonnée et peinte participent à une véritable mise en scène, parfois théâtrale, avec des figures en bois polychromés ou des mannequins, associés à des drapés. L’objet de la présente étude est une Mise au Tombeau conservée dans l’Église Sainte-Marie d’Espira-de-Conflent. Elle se compose de sept personnages vêtus de toiles « empesées », sous un baldaquin réalisé selon la même technique. La mise en œuvre de ces drapésprésente encore de nombreux mystères. L’étude tente d’en éclairer quelques-uns.The painted and coated “starched cloth” technique seems to have been used since the XVIthcentury, in Italy. Today this practice has been forgotten and there is very little research made on the subject. To create realism, lightness, and gain time and means it was used to reproduce draperies. Shaped and painted works with finished cloth were made to reproduce scenes, some of which were theatrical with painted wooden figures or mannequins playing major roles associated with these painted canvases. The subject of research is an “entombment", kept in St Marie d'Espira de Conflent’s church. It is made up of seven characters dressed in "starched cloth" and staged in a coated and painted canopy. This assemblage is subject to humidity problems in the church and due to much shipping and handling it is now in an alarming state of conservation. This is a technique that still conceals many mysteries. This study tries to clarify some of them.

  20. Digital mammography

    International Nuclear Information System (INIS)

    Bick, Ulrich; Diekmann, Felix

    2010-01-01

    This state-of-the-art reference book provides in-depth coverage of all aspects of digital mammography, including detector technology, image processing, computer-aided diagnosis, soft-copy reading, digital workflow, and PACS. Specific advantages and disadvantages of digital mammography in comparison to screen-film mammography are thoroughly discussed. By including authors from both North America and Europe, the book is able to outline variations in the use, acceptance, and quality assurance of digital mammography between the different countries and screening programs. Advanced imaging techniques and future developments such as contrast mammography and digital breast tomosynthesis are also covered in detail. All of the chapters are written by internationally recognized experts and contain numerous high-quality illustrations. This book will be of great interest both to clinicians who already use or are transitioning to digital mammography and to basic scientists working in the field. (orig.)

  1. Digital fluxgate magnetometer: design notes

    International Nuclear Information System (INIS)

    Belyayev, Serhiy; Ivchenko, Nickolay

    2015-01-01

    We presented an approach to understanding the performance of a fully digital fluxgate magnetometer. All elements of the design are important for the performance of the instrument, and the presence of the digital feed-back loop introduces certain peculiarities affecting the noise and dynamic performance of the instrument. Ultimately, the quantisation noise of the digital to analogue converter is found to dominate the noise of the current design, although noise shaping alleviates its effect to some extent. An example of magnetometer measurements on board a sounding rocket is presented, and ways to further improve the performance of the instrument are discussed. (paper)

  2. Digital Information and Value

    Directory of Open Access Journals (Sweden)

    Paul Walton

    2015-11-01

    Full Text Available Digital information changes the ways in which people and organisations interact. This paper examines the nature of this change in the context of the author’s Model for Information (MfI. It investigates the relationship between outcomes and value, selection processes and some attributes of information and explores how this relationship changes in the move from analogue to digital information. Selection processes shape the evolution of information ecosystems in which conventions are established for the ways in which information is used. The conventions determine norms for information friction and information quality as well as the sources of information and channels used. Digital information reduces information friction, often dramatically, and changes information quality. The increasing use of analytics in business increasingly delivers predictive or prescriptive digital information. These changes are happening faster than information ecosystem conventions can change. The relationships established in the paper enable an analysis of, and guide changes to, these conventions enabling a more effective use of digital information.

  3. Digital Signage

    OpenAIRE

    Fischer, Karl Peter

    2011-01-01

    Digital Signage for in-store advertising at gas stations/retail stores in Germany: A field study Digital Signage networks provide a novel means of advertising with the advantage of easily changeable and highly customizable animated content. Despite the potential and increasing use of these media empirical research is scarce. In a field study at 8 gas stations (with integrated convenience stores) we studied the effect of digital signage advertising on sales for different products and servi...

  4. Digital Forensics

    OpenAIRE

    Garfinkel, Simson L.

    2013-01-01

    A reprint from American Scientist the magazine of Sigma Xi, The Scientific Research Society Since the 1980s, computers have had increasing roles in all aspects of human life—including an involvement in criminal acts. This development has led to the rise of digital forensics, the uncovering and examination of evidence located on all things electronic with digital storage, including computers, cell phones, and networks. Digital forensics researchers and practitione...

  5. Updated Methods for Seed Shape Analysis.

    Science.gov (United States)

    Cervantes, Emilio; Martín, José Javier; Saadaoui, Ezzeddine

    2016-01-01

    Morphological variation in seed characters includes differences in seed size and shape. Seed shape is an important trait in plant identification and classification. In addition it has agronomic importance because it reflects genetic, physiological, and ecological components and affects yield, quality, and market price. The use of digital technologies, together with development of quantification and modeling methods, allows a better description of seed shape. Image processing systems are used in the automatic determination of seed size and shape, becoming a basic tool in the study of diversity. Seed shape is determined by a variety of indexes (circularity, roundness, and J index). The comparison of the seed images to a geometrical figure (circle, cardioid, ellipse, ellipsoid, etc.) provides a precise quantification of shape. The methods of shape quantification based on these models are useful for an accurate description allowing to compare between genotypes or along developmental phases as well as to establish the level of variation in different sets of seeds.

  6. Updated Methods for Seed Shape Analysis

    Directory of Open Access Journals (Sweden)

    Emilio Cervantes

    2016-01-01

    Full Text Available Morphological variation in seed characters includes differences in seed size and shape. Seed shape is an important trait in plant identification and classification. In addition it has agronomic importance because it reflects genetic, physiological, and ecological components and affects yield, quality, and market price. The use of digital technologies, together with development of quantification and modeling methods, allows a better description of seed shape. Image processing systems are used in the automatic determination of seed size and shape, becoming a basic tool in the study of diversity. Seed shape is determined by a variety of indexes (circularity, roundness, and J index. The comparison of the seed images to a geometrical figure (circle, cardioid, ellipse, ellipsoid, etc. provides a precise quantification of shape. The methods of shape quantification based on these models are useful for an accurate description allowing to compare between genotypes or along developmental phases as well as to establish the level of variation in different sets of seeds.

  7. The Virtual Steel Sculpture--Limit State Analyses and Applications of Steel Connections

    Science.gov (United States)

    Chou, Karen C.; Moaveni, Saeed; Sapp, James D.

    2017-01-01

    The integrity of a structural system depends on the strength of materials, shape of the individual member and the elements used to hold the members together. In most undergraduate civil engineering curricula, a structural steel and/or reinforced concrete design course is required. Usually, the main focus of these courses is on member selection…

  8. Her Excellency Mrs Sarah Gillett Her Majesty's Ambassador to the Swiss Confederation United Kingdom of Great Britain and Northern Ireland on the occasion of the Antony Gormley sculpture unveiling ceremony Wednesday 7th December 2011

    CERN Multimedia

    Maximilien Brice

    2011-01-01

    Her Excellency Mrs Sarah Gillett Her Majesty's Ambassador to the Swiss Confederation United Kingdom of Great Britain and Northern Ireland on the occasion of the Antony Gormley sculpture unveiling ceremony Wednesday 7th December 2011

  9. Digital Audiobooks

    DEFF Research Database (Denmark)

    Have, Iben; Pedersen, Birgitte Stougaard

    Audiobooks are rapidly gaining popularity with widely accessible digital downloading and streaming services. The paper is framing how the digital audiobook expands and changes the target groups for book publications and how it as an everyday activity is creating new reading experiences, places...

  10. Digital mammography

    International Nuclear Information System (INIS)

    Cho, Nariya; Cha, Joo Hee; Moon, Woo Kyung

    2005-01-01

    Mammography is the best imaging modality for the detection of early breast cancer in asymptomatic women. However, 10-30% of cases are missed with current film-screen mammography. Digital mammography allows for the separate optimization of image acquisition and display. In addition to the obvious data storage, retrieval, and transmission advantages that digital mammography allows, additional advances such as computer-aided diagnosis, tomosynthesis and dual energy mammography are in development. This review will discuss the technology of digital mammography including detectors and displays, the results of clinical trials comparing film-screen and digital mammography, and the use of computer-aided detection. Digital mammography is a promising new technology for breast cancer detection in the Korean women

  11. Digital Humanities

    DEFF Research Database (Denmark)

    Brügger, Niels

    2016-01-01

    Digital humanities is an umbrella term for theories, methodologies, and practices related to humanities scholarship that use the digital computer as an integrated and essential part of its research and teaching activities. The computer can be used for establishing, finding, collecting, and preser......Digital humanities is an umbrella term for theories, methodologies, and practices related to humanities scholarship that use the digital computer as an integrated and essential part of its research and teaching activities. The computer can be used for establishing, finding, collecting......, and preserving material to study, as an object of study in its own right, as an analytical tool, or for collaborating, and for disseminating results. The term "digital humanities" was coined around 2001, and gained currency within academia in the following years. However, computers had been used within...

  12. Digital displacements

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2014-01-01

    digital interface. However, the transformation of citizen services from traditional face-to-face interaction to digital self-service gives rise to new practices; some citizens need support to be able to manage self-service through digital tools. A mixture of support and teaching, named co...... digital reforms in Denmark and shows how citizen service is transformed from service to support. The frontline employee’s classical tasks such as casework are being displaced into educational and support-oriented tasks with less professional content. Thus an unintended effect of digitisation is blurred......In recent years digital reforms are being introduced in the municipal landscape of Denmark. The reforms address the interaction between citizen and local authority. The aim is, that by 2015 at least 80 per cent of all correspondence between citizens and public authority will be transmitted through...

  13. Sports Digitalization

    DEFF Research Database (Denmark)

    Xiao, Xiao; Hedman, Jonas; Tan, Felix Ter Chian

    2017-01-01

    evolution, as digital technologies are increasingly entrenched in a wide range of sporting activities and for applications beyond mere performance enhancement. Despite such trends, research on sports digitalization in the IS discipline is surprisingly still nascent. This paper aims at establishing......Ever since its first manifesto in Greece around 3000 years ago, sports as a field has accumulated a long history with strong traditions while at the same time, gone through tremendous changes toward professionalization and commercialization. The current waves of digitalization have intensified its...... a discourse on sports digitalization within the discipline. Toward this, we first provide an understanding of the institutional characteristics of the sports industry, establishing its theoretical importance and relevance in our discipline; second, we reveal the latest trends of digitalization in the sports...

  14. Digital information order or anarchy?

    CERN Document Server

    Woodward, Hazel M

    2009-01-01

    In an information environment shaped by an ever-growing and persistent demand for more and more digital content from every direction, it has become increasingly important that publishers, libraries and information professionals understand the challenges and opportunities of the Google environment. This book addresses these issues.

  15. PATHOS – the bodies of Christ on the Cross. Rhetoric of suffering in wooden sculpture found in Portugal, twelfth-fourteenth centuries. A few examples

    Directory of Open Access Journals (Sweden)

    Fernandes, Carla Varela

    2013-11-01

    Full Text Available In Portuguese medieval art, freestanding wooden sculptures representing Christ on the Cross are among the less studied typologies. For this reason, it is important to discuss and question some of the most representative works of aesthetic values and/or iconographic models that characterised this European production between the twelfth and fourteenth centuries. The option for the Christus patiens typology is justified by the fact that it includes a large number of sculptures, some still requiring analysis and reflection, with the possibility of bringing to light new elements through fresh comparisons or using laboratory-based findings. The examples analysed here demonstrate the existence of artistic models reflecting the importance offoreign formal and iconographic references, which in turn raise the issues of the import and/or reinterpretation by Portuguese sculptors of these ideas, and of the itinerancy of foreign sculptors through Portugal, locating this corpus within an international historiographical discussion.

  16. Digital radiography

    International Nuclear Information System (INIS)

    Coulomb, M.; Dal Soglio, S.; Pittet-Barbier, L.; Ranchoup, Y.; Thony, F.; Ferretti, G.; Robert, F.

    1992-01-01

    Digital projection radiography may replace conventional radiography some day, provided it can meet several requirements: equal or better diagnostic effectiveness of the screen-film systems; reasonable image cost; real improvement in the productivity of the Departments of Imaging. All digital radiographic systems include an X-ray source, an image acquisition and formatting sub-system, a display and manipulation sub-system, and archiving subsystem and a laser editing system, preferably shared by other sources of digital images. Three digitization processes are available: digitization of the radiographic film, digital fluorography and phospholuminescent detectors with memory. The advantages of digital fluoroscopy are appealing: real-time image acquisition, suppression of cassettes; but its disadvantages are far from negligible: it cannot be applied to bedside radiography, the field of examination is limited, and the wide-field spatial resolution is poor. Phospholuminescent detectors with memory have great advantages: they can be used for bedside radiographs and on all the common radiographic systems; spatial resolution is satisfactory; its current disadvantages are considerable. These two systems, have common properties making up the entire philosophy of digital radiology and specific features that must guide our choice according to the application. Digital fluorography is best applied in pediatric radiology. However, evaluation works have showed that it was applicable with sufficient quality to many indications of general radiology in which a fluoroscopic control and fast acquisition of the images are essential; the time gained on the examination may be considerable, as well as the savings on film. Detectors with memory are required for bedside radiographs, in osteoarticular and thoracic radiology, in all cases of traumatic emergency and in the resuscitation and intensive care departments

  17. EDXRF portable system used in the analysis of altars, sculptures and paintings from XVII and XVIII centuries in Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, R.P. [Nuclear Instrumentation Laboratory, COPPE/UFRJ, Rio de Janeiro, RJ (Brazil); CEFETEQ, Rio de Janeiro, RJ (Brazil); Calza, C.; Lopes, R.T., E-mail: ccalza@lin.ufrj.br [Nuclear Instrumentation Laboratory, COPPE/UFRJ, Rio de Janeiro, RJ (Brazil); Santos, R.O. [RG Conservation and Restoration, Rio de Janeiro, RJ (Brazil)

    2011-07-01

    Full text: The preservation of cultural heritage has acquired increasing interest in the last decades and many scientific techniques have been employed to analyze paintings, manuscripts, ceramics, glasses, statues, coins and metal artifacts in order to solve problems related to restoration, conservation, dating and attribution of artworks. There is also an increasing trend for non-destructive investigations since most of the samples are unique and precious objects of art and archaeology. X-Ray fluorescence (XRF) is the most widely used investigative technique in the field of archaeometry, due to a number of favorable analytical characteristics, such as multielemental and non-destructive analysis, high sensitivity and applicability to a wide range of samples. In this work, XRF was used to analyze altars, sculptures and paintings in the Saint Anthony Convent (Rio de Janeiro, Brazil). The cornerstone of this convent was launched in 1608, by the Franciscan friars, and the construction of the church was finished in 1620. The Saint Anthony sculpture in the main altar is one of the few remaining pieces from the XVII century in Rio de Janeiro. The splendid Baroque carvings of the chapel, covered with integral gilding, in the national Portuguese style, dates from 1716 to 1719. The results obtained during the analyses have been used in the meticulous process of restoration, developed in the last two years, in order to recover the original splendour of this important piece of our cultural heritage. The analyses were carried out with an EDXRF portable system developed in the Nuclear Instrumentation Laboratory, consisting of an X-ray tube Oxford TF3005 with W anode, operating at 25 kV and 100 {mu}A, and a Si-PIN XR-100CR detector from Amptek. In each sample were obtained several spectra, with an acquisition time of 300 s and a beam collimation of 1.5 and 2 mm. The spectra were analyzed using the software QXAS-AXIL from IAEA. The analysis of the golden carvings of the altars, in

  18. Digital radiography

    International Nuclear Information System (INIS)

    Zani, M.L.

    2002-01-01

    X-ray radiography is a very common technique used to check the homogeneity of a material or the inside of a mechanical part. Generally the radiation that goes through the material to check, produced an image on a sensitized film. This method requires time because the film needs to be developed, digital radiography has no longer this inconvenient. In digital radiography the film is replaced by digital data and can be processed as any computer file. This new technique is promising but its main inconvenient is that today its resolution is not so good as that of film radiography. (A.C.)

  19. Digital electronics

    CERN Document Server

    Morris, John

    2013-01-01

    An essential companion to John C Morris's 'Analogue Electronics', this clear and accessible text is designed for electronics students, teachers and enthusiasts who already have a basic understanding of electronics, and who wish to develop their knowledge of digital techniques and applications. Employing a discovery-based approach, the author covers fundamental theory before going on to develop an appreciation of logic networks, integrated circuit applications and analogue-digital conversion. A section on digital fault finding and useful ic data sheets completes th

  20. Digital Leadership

    DEFF Research Database (Denmark)

    Zupancic, Tadeja; Verbeke, Johan; Achten, Henri

    2016-01-01

    Leadership is an important quality in organisations. Leadership is needed to introduce change and innovation. In our opinion, in architectural and design practices, the role of leadership has not yet been sufficiently studied, especially when it comes to the role of digital tools and media....... With this paper we intend to initiate a discussion in the eCAADe community to reflect and develop ideas in order to develop digital leadership skills amongst the membership. This paper introduces some important aspects, which may be valuable to look into when developing digital leadership skills....

  1. Digital radiography

    International Nuclear Information System (INIS)

    Kusano, Shoichi

    1993-01-01

    Firstly, from an historic point of view, fundamental concepts on digital imaging were reviewed to provide a foundation for discussion of digital radiography. Secondly, this review summarized the results of ongoing research in computed radiography that replaces the conventional film-screen system with a photo-stimulable phosphor plate; and thirdly, image quality, radiation protection, and image processing techniques were discussed with emphasis on picture archiving and communication system environment as our final goal. Finally, future expansion of digital radiography was described based on the present utilization of computed tomography at the National Defense Medical College Hospital. (author) 60 refs

  2. Linear shaped charge

    Energy Technology Data Exchange (ETDEWEB)

    Peterson, David; Stofleth, Jerome H.; Saul, Venner W.

    2017-07-11

    Linear shaped charges are described herein. In a general embodiment, the linear shaped charge has an explosive with an elongated arrowhead-shaped profile. The linear shaped charge also has and an elongated v-shaped liner that is inset into a recess of the explosive. Another linear shaped charge includes an explosive that is shaped as a star-shaped prism. Liners are inset into crevices of the explosive, where the explosive acts as a tamper.

  3. Digital Hadron Calorimetry

    Science.gov (United States)

    Bilki, Burak

    2018-03-01

    The Particle Flow Algorithms attempt to measure each particle in a hadronic jet individually, using the detector providing the best energy/momentum resolution. Therefore, the spatial segmentation of the calorimeter plays a crucial role. In this context, the CALICE Collaboration developed the Digital Hadron Calorimeter. The Digital Hadron Calorimeter uses Resistive Plate Chambers as active media and has a 1-bit resolution (digital) readout of 1 × 1 cm2 pads. The calorimeter was tested with steel and tungsten absorber structures, as well as with no absorber structure, at the Fermilab and CERN test beam facilities over several years. In addition to conventional calorimetric measurements, the Digital Hadron Calorimeter offers detailed measurements of event shapes, rigorous tests of simulation models and various tools for improved performance due to its very high spatial granularity. Here we report on the results from the analysis of pion and positron events. Results of comparisons with the Monte Carlo simulations are also discussed. The analysis demonstrates the unique utilization of detailed event topologies.

  4. The Sculptured Hills of the Taurus Highlands: Implications for the relative age of Serenitatis, basin chronologies and the cratering history of the Moon

    Science.gov (United States)

    Spudis, P.D.; Wilhelms, D.E.; Robinson, M.S.

    2011-01-01

    New images from the Lunar Reconnaissance Orbiter Camera show the distribution and geological relations of the Sculptured Hills, a geological unit widespread in the highlands between the Serenitatis and Crisium basins. The Sculptured Hills shows knobby, undulating, radially textured, and plains-like morphologies and in many places is indistinguishable from the similarly knobby Alpes Formation, a facies of ejecta from the Imbrium basin. The new LROC image data show that the Sculptured Hills in the Taurus highlands is Imbrium ejecta and not directly related to the formation of the Serenitatis basin. This occurrence and the geological relations of this unit suggests that the Apollo 17 impact melts may not be not samples of the Serenitatis basin-forming impact, leaving their provenance undetermined and origin unexplained. If the Apollo 17 melt rocks are Serenitatis impact melt, up to half of the basin and large crater population of the Moon was created within a 30 Ma interval around 3.8 Ga in a global impact "cataclysm." Either interpretation significantly changes our view of the impact process and history of the Earth-Moon system. Copyright 2011 by the American Geophysical Union.

  5. A digital Jewish history?

    Directory of Open Access Journals (Sweden)

    Smiatacz Carmen

    2017-06-01

    Full Text Available How can we teach Jewish history in a modern and effective way? In Hamburg, Germany, a school project called Geschichtomat tries to find an answer to that question. With the help of digital media, students explore their Jewish neighbourhood. This one-of-a-kind German program permits students to experience the Jewish past and present life in their hometown. During the project, students explore their neighbourhood to understand its historical figures, places, and events. This way they engage with Jewish life. Under the supervision of experts in the disciplines of history and media education, the students will: research, perform interviews with cultural authorities and contemporary witnesses, visit museums and archives, shoot and cut films, edit photos and write accompanying texts. Finally, their contributions are uploaded to the geschichtomat.de website. Little by little a digital map of Jewish life from the perspective of teenagers will take shape.

  6. Digital Snaps

    DEFF Research Database (Denmark)

    Sandbye, Mette; Larsen, Jonas

    Purikura Photography / Mette Sandbye -- ch. 7. 'Buying an Instrument Does Not Necessarily Make You a Musician': Studio Photography and the Digital Revolution / Sigrid Lien -- pt. III. NEW PUBLIC FORMS -- ch. 8 Paparazzi Photography, Seriality and the Digital Photo Archive / Anne Jerslev and Mette Mortensen......The New Face of Snapshot Photography / Jonas Larsen and Mette Sandbye -- pt. I. IMAGES ON WEB 2.0 AND THE CAMERA PHONE -- ch. 1. Overlooking, Rarely Looking and Not Looking / Martin Lister -- ch. 2. The (Im)mobile Life of Digital Photographs: The Case of Tourist Photography / Jonas Larsen -- ch. 3....... Distance as the New Punctum / Mikko Villi -- pt. II. FAMILY ALBUMS IN TRANSITION -- ch. 4. How Digital Technologies Do Family Snaps, Only Better / Gillian Rose -- ch. 5. Friendship Photography: Memory, Mobility and Social Networking / Joanne Garde-Hansen -- ch. 6. Play, Process and Materiality in Japanese...

  7. Digital Discretion

    DEFF Research Database (Denmark)

    Busch, Peter Andre; Zinner Henriksen, Helle

    2018-01-01

    discretion is suggested to reduce this footprint by influencing or replacing their discretionary practices using ICT. What is less researched is whether digital discretion can cause changes in public policy outcomes, and under what conditions such changes can occur. Using the concept of public service values......This study reviews 44 peer-reviewed articles on digital discretion published in the period from 1998 to January 2017. Street-level bureaucrats have traditionally had a wide ability to exercise discretion stirring debate since they can add their personal footprint on public policies. Digital......, we suggest that digital discretion can strengthen ethical and democratic values but weaken professional and relational values. Furthermore, we conclude that contextual factors such as considerations made by policy makers on the macro-level and the degree of professionalization of street...

  8. Digital fabrication

    CERN Document Server

    2012-01-01

    The Winter 2012 (vol. 14 no. 3) issue of the Nexus Network Journal features seven original papers dedicated to the theme “Digital Fabrication”. Digital fabrication is changing architecture in fundamental ways in every phase, from concept to artifact. Projects growing out of research in digital fabrication are dependent on software that is entirely surface-oriented in its underlying mathematics. Decisions made during design, prototyping, fabrication and assembly rely on codes, scripts, parameters, operating systems and software, creating the need for teams with multidisciplinary expertise and different skills, from IT to architecture, design, material engineering, and mathematics, among others The papers grew out of a Lisbon symposium hosted by the ISCTE-Instituto Universitario de Lisboa entitled “Digital Fabrication – A State of the Art”. The issue is completed with four other research papers which address different mathematical instruments applied to architecture, including geometric tracing system...

  9. Becoming digital

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2015-01-01

    . Originality/value: The study contributes to ethnographic research in public administration by combining two separate subfields, e-government and street-level bureaucracy, to discern recent transformations in public service delivery. In the digital era, tasks, control and equality are distributed in ways......The purpose of this paper is to examine the impact of e-government reforms on street-level bureaucrats’ professionalism and relation to citizens, thus demonstrating how the bureaucratic encounter unfolds in the digital era. Design/methodology/approach: The paper is based on an ethnographic study....... An ethnographic account of how digital reforms are implemented in practice shows how street-level bureaucrat’s classic tasks such as specialized casework are being reconfigured into educational tasks that promote the idea of “becoming digital”. In the paper, the author argues that the work of “becoming digital...

  10. Digital Bangladesh

    OpenAIRE

    Masudul Alam Choudhury

    2013-01-01

    The present fever to launch an extensive digitalization program is sweeping the Bangladesh political, business, and elitist minds. In the face of an overarching outlook of sustainable development the Bangladesh digitalization program runs into some grave questions. The paper points out that ethics as a strongly endogenous force in development is indispensable to keep in view the simultaneity of attaining growth and social justice. These targets are variously manifested in different sectors an...

  11. Digital Leadership

    OpenAIRE

    Zupanzic, Tadeja; Verbeke, Johan; Achten, Henri; Herneoja, Aulikki

    2016-01-01

    Leadership is an important quality in organisations. Leadership is needed to introduce change and innovation. In our opinion, in architectural and design practices, the role of leadership has not yet been sufficiently studied, especially when it comes to the role of digital tools and media. With this paper, we intend to initiate a discussion in the eCAADe community to reflect and develop ideas in order to develop digital leadership skills amongst the membership. This paper introduces some imp...

  12. Design in the digital textbook

    DEFF Research Database (Denmark)

    Ebbesen, Toke Riis

    reorganization of the publishing company, web based user interfaces, and ultimately the branding, that market these new digital objects, are building powerful discourses around the product. Thus it is suggested that the design process of the iBog-case can be understood in a model of database-based publishing......Building on a preliminary case study of the Danish educational publisher, Systime A/S, and its flagship product, the web based ‘iBog’ {Systime 2014}, this paper explores how digital textbooks can be understood as design. The shaping of digital books is seen as intertwined in a wider circuit...... with multiple levels. In the final analysis, the iBog is much more than a product and a technology. It is a brand that goes beyond what can be studied by looking at the digital textbook as a singular artefact....

  13. Drop shape visualization and contact angle measurement on curved surfaces.

    Science.gov (United States)

    Guilizzoni, Manfredo

    2011-12-01

    The shape and contact angles of drops on curved surfaces is experimentally investigated. Image processing, spline fitting and numerical integration are used to extract the drop contour in a number of cross-sections. The three-dimensional surfaces which describe the surface-air and drop-air interfaces can be visualized and a simple procedure to determine the equilibrium contact angle starting from measurements on curved surfaces is proposed. Contact angles on flat surfaces serve as a reference term and a procedure to measure them is proposed. Such procedure is not as accurate as the axisymmetric drop shape analysis algorithms, but it has the advantage of requiring only a side view of the drop-surface couple and no further information. It can therefore be used also for fluids with unknown surface tension and there is no need to measure the drop volume. Examples of application of the proposed techniques for distilled water drops on gemstones confirm that they can be useful for drop shape analysis and contact angle measurement on three-dimensional sculptured surfaces. Copyright © 2011 Elsevier Inc. All rights reserved.

  14. “TEMPORIBUS DOMINI IOHANNIS EPISCOPI...” – On the Beginnings of Pre-Romanesque Sculpture in Boka Kotorska

    Directory of Open Access Journals (Sweden)

    Meri Zornija

    2016-01-01

    Full Text Available This paper focuses on a series of pre-Romanesque fragments found in Kotor and several other localities in Boka Kotorska, which can be linked to an early phase in the formation of the pre-Romanesque style. Chronological orientation points provided by the triple mention of Bishop Ivan, who was present at the Second Council of Nicaea in 787, have served as a framework dating the fragments to the last quarter of the 8th and the early 9th century. They are considered to be work of a highly skilful stonemason workshop, for which the name Stonemason Workshop from the Time of Bishop Ivan of Kotor has been proposed. The reliefs have been compared to analogous sculptural decoration adorning the cathedrals of other cities in the Eastern Adriatic based on similar stylistic and iconographic features,as well as masterful stonemasonry in high-quality marble. These analogies indicate a common visual language used by the masters active in the broad belt stretching from Istria to Boka Kotorska, who brought to our coast the spirit of new, pre-Romanesque art at the turn of the 9th century.

  15. Reflection and transmission of obliquely incident light by chiral sculptured thin films fabricated using asymmetric serial-bideposition technique

    Science.gov (United States)

    McAtee, Patrick D.; Lakhtakia, Akhlesh

    2017-10-01

    Chiral sculptured thin films (STFs) were grown using the asymmetric serial-bideposition (ASBD) technique, whereby (i) two subdeposits of unequal heights are separated by a substrate rotation of 180 deg about the central normal axis, and (ii) consecutive subdeposit pairs are separated by a small substrate rotation δ on the order of a few degrees. Eight samples were prepared with subdeposit heights in ratios of 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 5:1, 7:1, and 9:1. A finely ambichiral STF was also grown. All nine samples were grown with the same vapor flux direction and to have 10 periods with the same thickness. The spectrums of all eight circular remittances of every sample were measured over a wide range of incidence angle θinc. Redshifting and narrowing of the circular Bragg regime was observed with increasing subdeposit-height ratio for all values of θinc, arriving at a limit with the 9:1 sample. The finely ambichiral sample has a circular Bragg regime similar to that of the 9:1 sample, but the latter exhibits much better discrimination between incident left circularly polarized light and right circularly polarized light than the former for θinc larger than about 20 deg.

  16. Digital evidence

    Directory of Open Access Journals (Sweden)

    Lukić Tatjana

    2012-01-01

    Full Text Available Although computer makes human activities faster and easier, innovating and creating new forms of work and other kinds of activities, it also influenced the criminal activity. The development of information technology directly affects the development of computer forensics without which, it can not even imagine the discovering and proving the computer offences and apprehending the perpetrator. Information technology and computer forensic allows us to detect and prove the crimes committed by computer and capture the perpetrators. Computer forensics is a type of forensics which can be defined as a process of collecting, preserving, analyzing and presenting digital evidence in court proceedings. Bearing in mind, that combat against crime, in which computers appear as an asset or object of the offense, requires knowledge of digital evidence as well as specific rules and procedures, the author in this article specifically addresses the issues of digital evidence, forensic (computer investigation, specific rules and procedures for detecting, fixing and collecting digital evidence and use of this type of evidence in criminal proceedings. The author also delas with international standards regarding digital evidence and cyber-space investigation.

  17. Digital watermark

    Directory of Open Access Journals (Sweden)

    Jasna Maver

    2000-01-01

    Full Text Available The huge amount of multimedia contents available on the World-Wide-Web is beginning to raise the question of their protection. Digital watermarking is a technique which can serve various purposes, including intellectual property protection, authentication and integrity verification, as well as visible or invisible content labelling of multimedia content. Due to the diversity of digital watermarking applicability, there are many different techniques, which can be categorised according to different criteria. A digital watermark can be categorised as visible or invisible and as robust or fragile. In contrast to the visible watermark where a visible pattern or image is embedded into the original image, the invisible watermark does not change the visual appearance of the image. The existence of such a watermark can be determined only through a watermark ex¬traction or detection algorithm. The robust watermark is used for copyright protection, while the fragile watermark is designed for authentication and integrity verification of multimedia content. A watermark must be detectable or extractable to be useful. In some watermarking schemes, a watermark can be extracted in its exact form, in other cases, we can detect only whether a specific given watermarking signal is present in an image. Digital libraries, through which cultural institutions will make multimedia contents available, should support a wide range of service models for intellectual property protection, where digital watermarking may play an important role.

  18. Digital Snaps

    DEFF Research Database (Denmark)

    Sandbye, Mette; Larsen, Jonas

    The New Face of Snapshot Photography / Jonas Larsen and Mette Sandbye -- pt. I. IMAGES ON WEB 2.0 AND THE CAMERA PHONE -- ch. 1. Overlooking, Rarely Looking and Not Looking / Martin Lister -- ch. 2. The (Im)mobile Life of Digital Photographs: The Case of Tourist Photography / Jonas Larsen -- ch. ...... -- ch. 9. Retouch Yourself: The Pleasures and Politics of Digital Cosmetic Surgery / Tanya Sheehan -- ch. 10. Virtual Selves: Art and Digital Autobiography / Louise Wolthers -- ch. 11. Mobile-Media Photography: New Modes of Engagement / Michael Shanks and Connie Svabo.......The New Face of Snapshot Photography / Jonas Larsen and Mette Sandbye -- pt. I. IMAGES ON WEB 2.0 AND THE CAMERA PHONE -- ch. 1. Overlooking, Rarely Looking and Not Looking / Martin Lister -- ch. 2. The (Im)mobile Life of Digital Photographs: The Case of Tourist Photography / Jonas Larsen -- ch. 3....... Distance as the New Punctum / Mikko Villi -- pt. II. FAMILY ALBUMS IN TRANSITION -- ch. 4. How Digital Technologies Do Family Snaps, Only Better / Gillian Rose -- ch. 5. Friendship Photography: Memory, Mobility and Social Networking / Joanne Garde-Hansen -- ch. 6. Play, Process and Materiality in Japanese...

  19. Shaping the Ambience of Homes with Domestic Hypermedia

    DEFF Research Database (Denmark)

    Grønbæk, Kaj; Petersen, Marianne Graves

    2004-01-01

    We currently witness a massive digitization of domestic materials e.g. photos, music, calendars, recipes, notes, messages. This digitization provides new conditions for how we interact with materials as well as how users shape the ambience of their homes. Observing the qualities of physical mater...

  20. Digital health care: cementing centralisation?

    Science.gov (United States)

    Keen, Justin

    2014-09-01

    This article reviews large-scale digital developments in the National Health Service in England in recent years and argues that there is a mismatch between digital and organisational thinking and practice. The arguments are based on new institutional thinking, where the digital infrastructure is taken to be an institution, which has been shaped over a long period, and which in turn shapes the behaviour of health professionals, managers and others. Many digital services are still being designed in line with a bureaucratic data processing model. Yet health services are increasingly based on a network model, where health professionals and service managers require information systems that allow them to manage risks proactively and to coordinate multiple services on behalf of patients. This article further argues that the data processing model is being reinforced by Open Data policies and by related developments in the acquisition of genomic and telehealth data, suggesting that the mismatch will persist. There is, therefore, an ongoing tension between frontline and central objectives for digital services. It may be that the tension can only be resolved when--or if--there is trust between the interested parties. © The Author(s) 2013.

  1. Virtual anastylosis of Greek sculpture as museum policy for public outreach and cognitive accessibility

    Science.gov (United States)

    Stanco, Filippo; Tanasi, Davide; Allegra, Dario; Milotta, Filippo Luigi Maria; Lamagna, Gioconda; Monterosso, Giuseppina

    2017-01-01

    This paper deals with a virtual anastylosis of a Greek Archaic statue from ancient Sicily and the development of a public outreach protocol for those with visual impairment or cognitive disabilities through the application of three-dimensional (3-D) printing and haptic technology. The case study consists of the marble head from Leontinoi in southeastern Sicily, acquired in the 18th century and later kept in the collection of the Museum of Castello Ursino in Catania, and a marble torso, retrieved in 1904 and since then displayed in the Archaeological Museum of Siracusa. Due to similar stylistic features, the two pieces can be dated to the end of the sixth century BC. Their association has been an open problem, largely debated by scholars, who have based their hypotheses on comparisons between pictures, but the reassembly of the two artifacts was never attempted. As a result the importance of such an artifact, which could be the only intact Archaic statue of a kouros ever found in Greek Sicily, has not fully been grasped by the public. Consequently, the curatorial dissemination of the knowledge related with such artifacts is purely based on photographic material. As a response to this scenario, the two objects have been 3-D scanned and virtually reassembled. The result has been shared digitally with the public via a web platform and, in order to include increased accessibility for the public with physical or cognitive disabilities, copies of the reassembled statue have been 3-D printed and an interactive test with the 3-D model has been carried out with a haptic device.

  2. Time within time: 3D printed sculptures within holographic art practice

    Science.gov (United States)

    Chang, Yin-Ren; Richardson, Martin

    2015-03-01

    Holography is a time-based medium, which uses its own aesthetics and techniques to interpret colour and light. This exclusive descriptive language does not simply represent a particular scenario in the moment of recording, but also documents the performance light during the shooting process. Nowadays 3D graphic software and Internet offer practitioners greater mobility in both the development and the delivery of their artwork. Furthermore, the diverse web-based social media presents unlimited and various spaces to facilitate artists in the exchange of creative knowledge, it enables them to collaborate on their projects with external connections - audience, specialists, etc. Within the analogue holography art practice, there is a primary lack of interface, or, in other words, it cannot utilise any digital creative tools. 3D printing makes it possible to bridge the gap between cyber space and the holographic world; even more so, as this emerging technique also becomes a platform, which can connect computational data and light information. The application of 3D printing in contemporary art will reshape the process of creation, as well as the form of visual narrative itself. New technologies continually and increasingly involve the projection of another artistic dimension, and the term "visual" embarks on challenging the generally accepted notion of understanding art and interacting with it. As new pathways of practice are established, it will take years to build a complete understanding of this medium in order to be able to take a full advantage of the benefits its use offers. This paper is aimed at looking for the potential new ways of artistic expression, deriving from the interrelation between analogue holography and 3D printing. It will also attempt an articulate assessment of 3D printing within the dynamic holographic aesthetics.

  3. Digital Relationships

    DEFF Research Database (Denmark)

    Ledborg Hansen, Richard

    -­rich information and highly interesting communication are sky-­high and rising. With a continuous increase in digitized communication follows a decrease in face-­to-­face encounters and our ability to engage in inter-­personal relationships are suffering for it (Davis, 2013). The behavior described in this paper...... of residual deposits from technology in organizations and its effect on individuals ability to connect to one another. Based on the case study the paper describes indications and suggests potential implication hereof. Given the inherent enhancement possibilities of technology our expectation for entertainment......-­‐Jones, 2011) for increases in effectiveness and efficiency we indiscriminately embrace digital communication and digitized information dissemination with enthusiasm – at the risk of ignoring the potentially dark side of technology. However, technology also holds a promise for better understanding precisely...

  4. Digital "X"

    DEFF Research Database (Denmark)

    Baiyere, Abayomi; Grover, Varun; Gupta, Alok

    2017-01-01

    Interest in using digital before existing research concepts seem to be on the rise in the IS field. This panel is positioned to explore what value lies in labelling our research as digital “x” as opposed to the well established IT “x” (where “x” can be strategy, infrastructure, innovation, artifact......, capability e.t.c). The question this raises is that of how much this contributes novel insight to IS scholarship versus how much this is merely a relabeling of old wines in new wine bottles. The panel is expected to provide conceptual clarity on the use of the digital “x” concept and provide a delineation...

  5. Digital radiography

    International Nuclear Information System (INIS)

    Rath, M.; Lissner, J.; Rienmueller, R.; Haendle, J.; Siemens A.G., Erlangen

    1984-01-01

    Using a prototype of an electronic, universal examination unit equipped with a special X-ray TV installation, spotfilm exposures and digital angiographies with high spatial resolution and wide-range contrast could be made in the clinic for the first time. With transvenous contrast medium injection, the clinical results of digital angiography show excellent image quality in the region of the carotids and renal arteries as well as the arteries of the extremities. The electronic series exposures have an image quality almost comparable to the quality obtained with cutfilm changers in conventional angiography. There are certain limitations due to the input field of 25 cm X-ray image intensified used. In respect of the digital angiography imaging technique, the electronic universal unit is fully suitable for clinical application. (orig.) [de

  6. Digital photogrammetry

    CERN Document Server

    Egels, Yves

    2003-01-01

    Photogrammetry is the use of photography for surveying primarily and is used for the production of maps from aerial photographs. Along with remote sensing, it represents the primary means of generating data for Geographic Information Systems (GIS). As technology develops, it is becoming easier to gain access to it. The cost of digital photogrammetric workstations are falling quickly and these new tools are therefore becoming accessible to more and more users. Digital Photogrammetry is particularly useful as a text for graduate students in geomantic and is also suitable for people with a good basic scientific knowledge who need to understand photogrammetry, and who wish to use the book as a reference.

  7. Digital voltmeter

    International Nuclear Information System (INIS)

    Yohannes Kamadi; Soekarno.

    1976-01-01

    The electrical voltage measuring equipment with digital display has been made. This equipment uses four digits display with single polarity measurement and integrating system. Pulses from the oscillator will be counted and converted to the staircase voltages, and compared to the voltage measured. When the balance is already achieved, the pulse will appear at the comparator circuit. This pulse will be used to trigger univibrator circuit. The univibrator output is used as signal for stopping the counting, and when reading time T already stops, the counting system will be reset. (authors)

  8. Digital caliper

    Science.gov (United States)

    Cable, Louella E.

    1967-01-01

    The large number of measurements needed to describe fully the characteristics of biological specimens and other objects has always been tedious and time consuming. The work can be done much more rapidly and with greater accuracy with a digital caliper recently developed by us. The digital caliper is a new electronic instrument built to measure objects precisely throughout the range of 0.1 mm to 1.0 m. Calipers of several different discrete sizes make it possible to select the most convenient unit for the particular range of length and degree of accuracy desired.

  9. Digital literacies

    CERN Document Server

    Hockly, Nicky; Pegrum, Mark

    2014-01-01

    Dramatic shifts in our communication landscape have made it crucial for language teaching to go beyond print literacy and encompass the digital literacies which are increasingly central to learners' personal, social, educational and professional lives. By situating these digital literacies within a clear theoretical framework, this book provides educators and students alike with not just the background for a deeper understanding of these key 21st-century skills, but also the rationale for integrating these skills into classroom practice. This is the first methodology book to address not jus

  10. Digital communication

    CERN Document Server

    Das, Apurba

    2010-01-01

    ""Digital Communications"" presents the theory and application of the philosophy of Digital Communication systems in a unique but lucid form. This book inserts equal importance to the theory and application aspect of the subject whereby the authors selected a wide class of problems. The Salient features of the book are: the foundation of Fourier series, Transform and wavelets are introduces in a unique way but in lucid language; the application area is rich and resemblance to the present trend of research, as we are attached with those areas professionally; a CD is included which contains code

  11. Digital radiography

    International Nuclear Information System (INIS)

    Elander, S.

    1986-01-01

    The report deals with a project for the development of digital, cerebral angiography competence in Norway. An IIS image processor and a DIGITAL VAX 11/750 were used for the processing of X-ray pictures. The pictures were scanned on an OPTRON C4100 and photographed on a MATRIX INSTR. 3000 videoprinter. The highpass functions Laplace, Roberts, and Sobel were utilized to enhance edges. Further, the room-variant contrast-stretch method WALLIS and the Local Adaptive Histogram Equalization (LAHE) from the SPIDER software package were applied

  12. Digital filters

    CERN Document Server

    Hamming, Richard W

    1997-01-01

    Digital signals occur in an increasing number of applications: in telephone communications; in radio, television, and stereo sound systems; and in spacecraft transmissions, to name just a few. This introductory text examines digital filtering, the processes of smoothing, predicting, differentiating, integrating, and separating signals, as well as the removal of noise from a signal. The processes bear particular relevance to computer applications, one of the focuses of this book.Readers will find Hamming's analysis accessible and engaging, in recognition of the fact that many people with the s

  13. Digital Radiography

    Science.gov (United States)

    1986-01-01

    System One, a digital radiography system, incorporates a reusable image medium (RIM) which retains an image. No film is needed; the RIM is read with a laser scanner, and the information is used to produce a digital image on an image processor. The image is stored on an optical disc. System allows the radiologist to "dial away" unwanted images to compare views on three screens. It is compatible with existing equipment and cost efficient. It was commercialized by a Stanford researcher from energy selective technology developed under a NASA grant.

  14. Digital Tidbits

    Science.gov (United States)

    Kumaran, Maha; Geary, Joe

    2011-01-01

    Technology has transformed libraries. There are digital libraries, electronic collections, online databases and catalogs, ebooks, downloadable books, and much more. With free technology such as social websites, newspaper collections, downloadable online calendars, clocks and sticky notes, online scheduling, online document sharing, and online…

  15. Digital Forensics

    Science.gov (United States)

    Harron, Jason; Langdon, John; Gonzalez, Jennifer; Cater, Scott

    2017-01-01

    The term forensic science may evoke thoughts of blood-spatter analysis, DNA testing, and identifying molds, spores, and larvae. A growing part of this field, however, is that of digital forensics, involving techniques with clear connections to math and physics. This article describes a five-part project involving smartphones and the investigation…

  16. Digital books.

    Science.gov (United States)

    Wink, Diane M

    2011-01-01

    In this bimonthly series, the author examines how nurse educators can use the Internet and Web-based computer technologies such as search, communication, and collaborative writing tools; social networking and social bookmarking sites; virtual worlds; and Web-based teaching and learning programs. This article describes digital books.

  17. Digital Methods

    NARCIS (Netherlands)

    Rogers, R.

    2013-01-01

    In Digital Methods, Richard Rogers proposes a methodological outlook for social and cultural scholarly research on the Web that seeks to move Internet research beyond the study of online culture. It is not a toolkit for Internet research, or operating instructions for a software package; it deals

  18. Digital Humanities and networked digital media

    Directory of Open Access Journals (Sweden)

    Niels Ole Finnemann

    2014-10-01

    Full Text Available This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital materials centred on the digitisation of non-digital, finite works, corpora and oeuvres. The second section discusses “the big tent” of contemporary digital humanities. It is argued that there can be no unifying interpretation of digital humanities above the level of studying digital materials with the help of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials and proposes that the study of digital materials should be established as a field in its own right.

  19. Digital Humanities and networked digital media

    Directory of Open Access Journals (Sweden)

    Niels Ole Finnemann

    2014-12-01

    Full Text Available This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital materials centred on the digitisation of non-digital, finite works, corpora and oeuvres. The second section discusses “the big tent” of contemporary digital humanities. It is argued that there can be no unifying interpretation of digital humanities above the level of studying digital materials with the help of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials and proposes that the study of digital materials should be established as a field in its own right.

  20. An ethical lesson learned from the equestrian sculpture, "The Torch Bearers," at the University of Madrid Dental School.

    Science.gov (United States)

    Christen, Arden G; Christen, Joan A

    2007-01-01

    As dental professionals, we continue to learn ethical lessons throughout our careers and beyond. We may experience them in our day-to-day involvements with peers and patients, or they may present themselves under more unusual circumstances. In October, 1974, at the University of Madrid Dental School, the senior author had a deeply impressionable experience minutes before he helped to present a course to Spanish dentists in operative dentistry. His co-presenter was Dr. Miles R. Markley of Denver, Colorado, a National Consultant in Restorative Dentistry for the U.S. Air Force. Their ethics teacher that day was Dr. Gerardo Zabalo, Dean of the dental school. His object lesson was delivered at the base of an equestrian, aluminum, larger-than-life sculpture, "The Torch Bearers" which faced the school. The sculptor shows an old, wrinkled man, lying prostrate, with only enough strength left to raise a lighted torch upward. Reaching down to receive the torch is a robust, energized young man, who is sitting upon a sturdy stallion. The lesson which Dean Zabalo taught that day was simple but profound. The lit torch of ethics, learning and values is essentially transmitted from generation to generation, as young students learn from their elders, accept the torch from their retiring leaders, keep the torch brightly lit as they mature in their profession, and, then in turn, hand it over to those young professionals who will replace them. This process will continue, age after age. Thus the torch of learning and thinking is passed on. In the world of education, human contact and the continued sanctity of the scientific written word must be paramount. Students must be taught how to read, learn and think. Computer technology used exclusively as a mode of teaching and learning can never become a viable substitute for our traditional interactive methods which emphasize human to human interaction.

  1. Fast digitizing and digital signal processing of detector signals

    International Nuclear Information System (INIS)

    Hannaske, Roland

    2008-01-01

    A fast-digitizer data acquisition system recently installed at the neutron time-of-flight experiment nELBE, which is located at the superconducting electron accelerator ELBE of Forschungszentrum Dresden-Rossendorf, is tested with two different detector types. Preamplifier signals from a high-purity germanium detector are digitized, stored and finally processed. For a precise determination of the energy of the detected radiation, the moving-window deconvolution algorithm is used to compensate the ballistic deficit and different shaping algorithms are applied. The energy resolution is determined in an experiment with γ-rays from a 22 Na source and is compared to the energy resolution achieved with analogously processed signals. On the other hand, signals from the photomultipliers of barium fluoride and plastic scintillation detectors are digitized. These signals have risetimes of a few nanoseconds only. The moment of interaction of the radiation with the detector is determined by methods of digital signal processing. Therefore, different timing algorithms are implemented and tested with data from an experiment at nELBE. The time resolutions achieved with these algorithms are compared to each other as well as to reference values coming from analog signal processing. In addition to these experiments, some properties of the digitizing hardware are measured and a program for the analysis of stored, digitized data is developed. The analysis of the signals shows that the energy resolution achieved with the 10-bit digitizer system used here is not competitive to a 14-bit peak-sensing ADC, although the ballistic deficit can be fully corrected. However, digital methods give better result in sub-ns timing than analog signal processing. (orig.)

  2. Becoming digital

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2015-01-01

    government, and draws on empirical material generated through observations, field notes, interviews and policy documents. The material is documenting how service is performed by frontline agents in the ‘bureaucratic encounter’ with citizens, who needs assistance to use digital self-service in order to apply...... online for a public benefit. Findings: The paper shows that e-government technology changes the mode of professionalism in citizen service from service to support. The paper gives an empirical account of recent Danish digital reforms and shows how the reforms both enable and constrain the work...... of ‘becoming digital’ by frontline agents. Overall the street-level bureaucrat’s classical tasks such as specialized casework are being displaced into promoting and educational tasks. An implication of this is blurred distinctions between professional skills and personal competences of the frontline agent...

  3. Digital resources

    Directory of Open Access Journals (Sweden)

    Redazione Reti Medievali (a cura di

    2005-12-01

    Full Text Available Bibliotheca Latinitatis Mediaevalis (circa VII sec. - XIV sec. IntraText Digital Library [01/06] Corpus Scriptorum Latinorum. A digital library of Latin literature by David Camden [01/06] Fonti disponibili online concernenti la vita religiosa medievale Rete Vitae Religiosae Mediaevalis Studia Conectens [01/06] Fuentes del Medievo Hispanico Instituto de Historia, Consejo Superior de Investigaciones Científicas [01/06] Latin Literature Forum Romanum [01/06] Ludovico Antonio Muratori, Dissertazioni sopra le antichità italiane, 1751 Biblioteca dei Classici Italiani di Giuseppe Bonghi [01/06] Medieval Latin The Latin Library [01/06] Médiévales Presses Universitaires de Vincennes - Revues.org [01/06] Regesta imperii Deutsche Kommission für die Bearbeitung der Regesta Imperii e.V. [01/06] Suda On Line Byzantine Lexicography [01/06

  4. Unraveling light with digital holograms

    CSIR Research Space (South Africa)

    Forbes, A

    2013-02-01

    Full Text Available the field, such as its scale and wavefront. We demonstrate the techniques on optical fields from fibers, diode-pumped solid- state lasers, and structured light by laser beam shaping. Keywords: Digital holography, modal decomposition, match filters 1.... INTRODUCTION The decomposition of some light field into a superposition of orthonormal basis functions, so-called modes, has been known for a long time1-5. Previously modal decomposition was executed with match filters encoded as physical diffractive...

  5. Ageing adults and digital games

    DEFF Research Database (Denmark)

    Iversen, Sara Mosberg

    of the elderly, three dominant discourses are identified. These are concerned with a generational digital divide, maintenance of health and general wellbeing as well as the ageing adults as an attractive marked. Notions of economical productivity inform most of the available work, often explicitly and at other......On the basis of Foucauldian notions of power, discipline and discourse it is here examined how ageing adults are constituted in relation to digital games within the existing research. Reviewing the available literature with a focus on justifications for research, aims and the portrayal...... times more implicitly. On this basis, the analysed research tends to offer digital games as disciplinary means to maintain, correct or tame the aging citizens. Either as technologies of the self, used in the individual’s self shaping, or as ways to contain and maintain the “disobedient” bodies and minds...

  6. Shape memory polymers

    Science.gov (United States)

    Wilson, Thomas S.; Bearinger, Jane P.

    2015-06-09

    New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxyl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.

  7. Digital produktion

    DEFF Research Database (Denmark)

    Bogen sætter fokus på digital produktion, som er en stærk læringsform, der faciliterer elevernes læreprocesser og kvalificerer elevernes faglige læringsresultater. Det sker når lærerne udarbejder didaktiske rammedesign, hvor eleverne arbejder selvstændigt inden for dette rammedesign, og hvor mål ...

  8. Research 2009-2011 - Digital Crafting

    DEFF Research Database (Denmark)

    Ramsgaard Thomsen, Mette; Tamke, Martin; Peder Pedersen, Claus

    2012-01-01

    The publication reports on the international research network 'Digital Crafting' organised in the period 2009-2011. The research network investigated profound changes in the design and building of architecture. Developing the term Digital Crafting, the network examined how the maturing of interfa...... of interfaces between the design space of the architect and the production space of the manufacturer is leading to the shaping of a new material practice in architecture....

  9. Digital citizens Digital nations: the next agenda

    NARCIS (Netherlands)

    A.W. (Bert) Mulder; M.W. (Martijn) Hartog

    2015-01-01

    DIGITAL CITIZENS CREATE A DIGITAL NATION Citizens will play the lead role as they – in the next phase of the information society – collectively create a digital nation. Personal adoption of information and communication technology will create a digital infrastructure that supports individual and

  10. Digital Humanities and networked digital media

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2014-01-01

    of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials......This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital...

  11. [Morphology of the soft palate in normal humans with digital cephalometry].

    Science.gov (United States)

    Niu, Yu-Ming; Wang, Hu; Zheng, Qian; He, Xing; Zhang, Jing; Li, Xiao-Min; Lu, Yong

    2006-08-01

    To study the morphology of the soft palate in normal humans with digital radiography and to provide the references for therapy of the cleft. 106 normal people were involved. The morphology of the soft palate was observed with digital cephalometry. All static images of soft palate could be divided into six types: Shuttle-shaped, crescent-shaped, strip-shaped, S-shaped, hamulus-shaped and anomalous shaped. The dynamic image was knee-shaped. The morphology of the soft palate is varied.

  12. Elucidation of molecular and elementary composition of organic and inorganic substances involved in 19th century wax sculptures using an integrated analytical approach

    International Nuclear Information System (INIS)

    Regert, M.; Langlois, J.; Laval, E.; Le Ho, A.-S.; Pages-Camagna, S.

    2006-01-01

    Wax sculptures contain several materials from both organic and inorganic nature. These works of art are particularly fragile. Determining their chemical composition is thus of prime importance for their preservation. The identification of the recipes of waxy pastes used through time also provides valuable information in the field of art history. The aim of the present research was to develop a convenient analytical strategy, as non-invasive as possible, that allows to identify the wide range of materials involved in wax sculptures. A multi-step analytical methodology, based on the use of complementary techniques, either non- or micro-destructive, was elaborated. X-ray fluorescence and micro-Raman spectroscopy were used in a non-invasive way to identify inorganic pigments, opacifiers and extenders. The combination of structural and separative techniques, namely infrared spectroscopy, direct inlet electron ionisation mass spectrometry and high temperature gas chromatography, was shown to be appropriate for unravelling the precise composition of the organic substances. A micro-chemical test was also performed for the detection of starch. From this study it has been possible to elucidate the composition of the waxy pastes used by three different sculptors at the end of the 19th century. Complex and elaborated recipes, in which a large range of natural substances were combined, were highlighted

  13. Digital fluorimeter

    International Nuclear Information System (INIS)

    Mello, H.A. de.

    1980-11-01

    The specifications of a digital fluorimeter. That with adequated analytical techniques permits to determine trace amounts of fluorescents materials in samples, are described. The fluorimeter is of the reflection type, and uses fluorescents lamps for the excitation and an optical system which is connected to a photomultiplyer machine and permits the measurement of the light intensity. In the case of IEN (Instituto de Engenharia Nuclear) the equipment is used for to determine the uranium content in sample materials to be exported. The precision of the instrument is about + - 1% in the scale of 0.1 which is the normally one used in the current researchs. (E.G.) [pt

  14. Becoming a Parent in a Digitized Age

    DEFF Research Database (Denmark)

    Sonne Damkjær, Maja

    This paper presents the results of a comparative case study on the role of digital media in the lives of Danish first-time parents (2012-15). Findings show that key practices in the transition to parenthood are closely entwined with digital media use e.g. announcing pregnancy and birth, sharing...... news from the new family life, building parental family ties or seeking advice and guidance. On this basis, the presentation argues that digital media have become involved in framing and shaping expectations, social roles and rituals in this pivotal, first phase of family life. The characteristics...

  15. The digital holographic interferometry in resonant acoustic spectroscopy

    International Nuclear Information System (INIS)

    GAPONOV, V.E.; AZAMATOV, Z.T.; REDKORECHEV, V.I.; ISAEV, A.M.

    2014-01-01

    The opportunities of application of digital holographic interferometry method for studies of shapes of resonant modes in resonant acoustic spectroscopy are shown. The results of experimental measurements and analytical calculations are submitted. (authors)

  16. Shape-changing interfaces:

    DEFF Research Database (Denmark)

    Rasmussen, Majken Kirkegård; Pedersen, Esben Warming; Petersen, Marianne Graves

    2015-01-01

    Shape change is increasingly used in physical user interfaces, both as input and output. Yet, the progress made and the key research questions for shape-changing interfaces are rarely analyzed systematically. We review a sample of existing work on shape-changing interfaces to address these shortc......Shape change is increasingly used in physical user interfaces, both as input and output. Yet, the progress made and the key research questions for shape-changing interfaces are rarely analyzed systematically. We review a sample of existing work on shape-changing interfaces to address...... shape-changing interfaces be used for, (b) which parts of the design space are not well understood, and (c) why studying user experience with shape-changing interfaces is important....

  17. Self-erecting shapes

    Science.gov (United States)

    Reading, Matthew W.

    2017-07-04

    Technologies for making self-erecting structures are described herein. An exemplary self-erecting structure comprises a plurality of shape-memory members that connect two or more hub components. When forces are applied to the self-erecting structure, the shape-memory members can deform, and when the forces are removed the shape-memory members can return to their original pre-deformation shape, allowing the self-erecting structure to return to its own original shape under its own power. A shape of the self-erecting structure depends on a spatial orientation of the hub components, and a relative orientation of the shape-memory members, which in turn depends on an orientation of joining of the shape-memory members with the hub components.

  18. The Hue of Shapes

    Science.gov (United States)

    Albertazzi, Liliana; Da Pos, Osvaldo; Canal, Luisa; Micciolo, Rocco; Malfatti, Michela; Vescovi, Massimo

    2013-01-01

    This article presents an experimental study on the naturally biased association between shape and color. For each basic geometric shape studied, participants were asked to indicate the color perceived as most closely related to it, choosing from the Natural Color System Hue Circle. Results show that the choices of color for each shape were not…

  19. Building with shapes

    CERN Document Server

    Mooney, Carla

    2014-01-01

    There are shapes everywhere you look. You can put shapes together or build with them. What can you build with three circles? In this title, students will explore and understand that certain attributes define what a shape is called. This title will allow students to identify the main purpose of a text, including what the author wants to answer, explain, or describe.

  20. Governance Strategies for a Sustainable Digital World

    Directory of Open Access Journals (Sweden)

    Igor Linkov

    2018-02-01

    Full Text Available Digitalization is changing society by the increased connectivity and networking that digital technologies enable, such as enhancing communication, services, and trade. Increasingly, policymakers within various national governments and international organizations such as the United Nations (UN and Organization for Economic Co-operation and Development (OECD are examining the original sustainability policy concepts applied within the Brundtland Report of 1987 through the lens of digitalization. While the growth of a digital economy may increase productivity and benefit local and global economies, digitalization also raises potential sustainability challenges pertaining to social (i.e., the benefits or costs imposed by disruptive digital technologies upon social networks and ways of life, including threats to economic sustainability and the rise of economic disparity and environmental wellbeing (i.e., natural resource stewardship and concern for future generations driven by the automation of information processing and delivery of services. Various perspectives have been raised regarding how the process of digitalization might be governed, and national governments remain at odds regarding a single best strategy to promote sustainable digitalization using the Brundtland concept to meet the development needs of the present without compromising the needs of future generations (i.e., social and environmental well-being. This paper reviews three governance strategies that countries can use in conjunction with adaptive governance to respond to digitalization sustainability threats: (i a laissez-faire, industry-driven approach; (ii a precautionary and preemptive strategy on the part of government; and (iii a stewardship and “active surveillance” approach by government agencies that reduce the risks derived from digitalization while promoting private sector innovation. Regardless of a state’s digital governance response and how it is shaped by

  1. Recycled Paper Beam Sculpture

    Science.gov (United States)

    Keller, Kristin; Tabacchi, Jo

    2011-01-01

    As art department budgets across the country continue to shrink, art teachers are increasingly on the lookout for inexpensive materials that can be used to teach a range of concepts. In this article, the authors describe a newspaper beam tower project inspired by the book, "The Wonderful Towers of Watts" by Patricia Zelver. There are many more…

  2. Self-generated etchant for synthetic sculpturing of Cu 2O-Au, Cu 2O@Au, Au/Cu 2O, and 3D-Au nanostructures

    KAUST Repository

    Pang, Maolin

    2012-10-09

    Structures of Gold: A simple transformative method for nanoscale sculpturing has been developed. Five different types of complex nanocomposites of cuprite and gold have been formed by using this self-etching approach (see figure). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. Alpha Shapes and Proteins

    DEFF Research Database (Denmark)

    Winter, Pawel; Sterner, Henrik; Sterner, Peter

    2009-01-01

    We provide a unified description of (weighted) alpha shapes, beta shapes and the corresponding simplicialcomplexes. We discuss their applicability to various protein-related problems. We also discuss filtrations of alpha shapes and touch upon related persistence issues.We claim that the full...... potential of alpha-shapes and related geometrical constructs in protein-related problems yet remains to be realized and verified. We suggest parallel algorithms for (weighted) alpha shapes, and we argue that future use of filtrations and kinetic variants for larger proteins will need such implementation....

  4. Digital demodulator

    Science.gov (United States)

    Shull, T. A. (Inventor)

    1982-01-01

    A digital demodulator for converting pulse code modulated data from phase shift key (PSK) to non return to zero (NRZ) and to biphase data is described. The demodulator is composed of standard integrated logic circuits. The key to the demodulation function is a pair of cross coupled one shot multivibrators and which with a flip-flop produce the NRZ-L is all that is required, the circuitry is greatly simplified and the 2(v) times bit rate contraint can be removed from the carrier. A flip-flop, an OR gate, and AND gate and a binary counter generate the bit rate clock (BTCK) for the NRZ-L. The remainder of the circuitry is for converting the NRZ-L and BTCK into biphase data. The device was designed for use in the space shuttle bay environment measurements.

  5. Focus: Digital

    DEFF Research Database (Denmark)

    Technology has been an all-important and defining element within the arts throughout the 20th century, and it has fundamentally changed the ways in which we produce and consume music. With this Focus we investigate the latest developments in the digital domain – and their pervasiveness and rapid...... production and reception of contemporary music and sound art. With ‘Digital’ we present four composers' very different answers to how technology impact their work. To Juliana Hodkinson it has become an integral part of her sonic writing. Rudiger Meyer analyses the relationships between art and design and how...... technology affects our habits of consumption. Risto Holopainen presents a notion of autonomous instruments and automated composition that, in the end, cannot escape the human while Jøren Rudi reflects on aesthetic elements and artistic approaches to sound in computer games. This focus is edited by Sanne...

  6. Digital radiography

    DEFF Research Database (Denmark)

    Precht, H; Gerke, O; Rosendahl, K

    2012-01-01

    BACKGROUND: New developments in processing of digital radiographs (DR), including multi-frequency processing (MFP), allow optimization of image quality and radiation dose. This is particularly promising in children as they are believed to be more sensitive to ionizing radiation than adults...... with CXDI-50 C detector and MLT[S] software) and analyzed by three pediatric radiologists using Visual Grading Analysis. In addition, 3,500 images taken of a technical contrast-detail phantom (CDRAD 2.0) provide an objective image-quality assessment. RESULTS: Optimal image-quality was maintained at a dose...... reduction of 61% with MLT(S) optimized images. Even for images of diagnostic quality, MLT(S) provided a dose reduction of 88% as compared to the reference image. Software impact on image quality was found significant for dose (mAs), dynamic range dark region and frequency band. CONCLUSION: By optimizing...

  7. The Routledge Handbook of Developments in Digital Journalism Studies

    NARCIS (Netherlands)

    Eldridge II, Scott; Franklin, Bob

    2018-01-01

    The Routledge Companion to Digital Journalism Studies offers an unprecedented collection of essays addressing the key issues and debates shaping the field of Digital Journalism Studies today. Across the last decade, journalism has undergone many changes, which have driven scholars to reassess its

  8. Teaching Language and Culture in a Digital Age

    Science.gov (United States)

    Chamberlin-Quinlisk, Carla

    2012-01-01

    This article examines part of the complex relationship between linguistic and cultural diversity and the digital technologies that shape our social worlds. In particular, the author explores how digital media cultivate ideas about language practice in multicultural communities and simultaneously serve as a pedagogical tool for discussing…

  9. Transforming shape in design

    DEFF Research Database (Denmark)

    Prats, Miquel; Lim, Sungwoo; Jowers, Iestyn

    2009-01-01

    This paper is concerned with how design shapes are generated and explored by means of sketching. It presents research into the way designers transform shapes from one state to another using sketch representations. An experimental investigation of the sketching processes of designers is presented...... phenomenon of ‘subshape' and suggests that a computational mechanism for detecting sub-shapes in design sketches might augment explorative sketching by providing important opportunities for manipulating and generating shape in design........ Connections between sketches are defined in terms of shape transformations and described according to shape rules. These rules provide a formal description of the shape exploration process and develop understanding of the mechanics of sketching in design. The paper concludes by discussing the important...

  10. Computer Aided Restoration Tools to Assist the Conservation of AN Ancient Sculpture. The Colossal Statue of ZEUS Enthroned

    Science.gov (United States)

    Di Paola, F.; Milazzo, G.; Spatafora, F.

    2017-08-01

    The research focuses on the contribution of the integrated application of Computer Aided Restoration digital procedures as a means to guide the integration measure of an artifact, innovating and implementing the traditional investigation methods. The aim of the study was to provide effective geometrical-formal investigation tools in the frame of the conservation work of Zeus enthroned from Soluntum, conserved in the Archaeological Museum "A. Salinas" of Palermo. The paper describes the workflow of the 3D acquisition and graphical modeling with non-invasive digitalization and high information density techniques to assist the conservation of the legs of the throne, especially the integration of the missing part. Thanks to the technique of the digital fabrication it has been reconstruct the two missing parts following the theoretical criteria as: recognisability, compatibility and retractability. This innovative application of 3D digital technologies have showed as the integrated use of the new technology can be a useful tools for improving the conservation of a work of art.

  11. COMPUTER AIDED RESTORATION TOOLS TO ASSIST THE CONSERVATION OF AN ANCIENT SCULPTURE. THE COLOSSAL STATUE OF ZEUS ENTHRONED

    Directory of Open Access Journals (Sweden)

    F. Di Paola

    2017-08-01

    Full Text Available The research focuses on the contribution of the integrated application of Computer Aided Restoration digital procedures as a means to guide the integration measure of an artifact, innovating and implementing the traditional investigation methods. The aim of the study was to provide effective geometrical-formal investigation tools in the frame of the conservation work of Zeus enthroned from Soluntum, conserved in the Archaeological Museum “A. Salinas” of Palermo. The paper describes the workflow of the 3D acquisition and graphical modeling with non-invasive digitalization and high information density techniques to assist the conservation of the legs of the throne, especially the integration of the missing part. Thanks to the technique of the digital fabrication it has been reconstruct the two missing parts following the theoretical criteria as: recognisability, compatibility and retractability. This innovative application of 3D digital technologies have showed as the integrated use of the new technology can be a useful tools for improving the conservation of a work of art.

  12. Digital work in a digitally challenged organization

    NARCIS (Netherlands)

    Davison, R.M.; Ou, Carol

    Digitally literate employees are accustomed to having free access to digital media technologies. However, some organizations enact information technology (IT) governance structures that explicitly proscribe access to these technologies, resulting in considerable tension between employees and the

  13. The fabrication and hydrophobic property of micro-nano patterned surface on magnesium alloy using combined sparking sculpture and etching route

    International Nuclear Information System (INIS)

    Wu, Yunfeng; Wang, Yaming; Liu, Hao; Liu, Yan; Guo, Lixin; Jia, Dechang; Ouyang, Jiahu; Zhou, Yu

    2016-01-01

    Highlights: • A hydrophobic micro-nano roughness surface on magnesium was fabricated. • Micro-nano structure derives from duplicating ‘over growth’ regions by MAO. • 7–9 μm micro-scale big pores insetting with nano-scale fine pores were fabricated. • Hydrophobicity of micro-nano surface was improved by chemical decoration and stearic treatment. - Abstract: Magnesium alloy with micro-nano structure roughness surface, can serve as the loading reservoirs of medicine capsule and industrial lubricating oil, or mimic ‘lotus leaf’ hydrophobic surface, having the potential applications in medical implants, automobile, aerospace and electronic products, etc. Herein, we propose a novel strategy to design a micro-nano structure roughness surface on magnesium alloy using combined microarc sparking sculpture and etching in CrO 3 aqueous solution. A hydrophobic surface (as an applied example) was further fabricated by chemical decorating on the obtained patterned magnesium alloy surface to enhance the corrosion resistance. The results show that the combined micro-nano structure of 7–9 μm diameter big pores insetting with nano-scale fine pores was duplicated after etched the sparking sculptured ‘over growth’ oxide regions towards the magnesium substrate. The micro-nano structure surface was chemically decorated using AgNO 3 and stearic acid, which enables the contact angle increased from 60° to 146.8°. The increasing contact angle is mainly attributed to the micro-nano structure and the chemical composition. The hydrophobic surface of magnesium alloy improved the corrosion potential from −1.521 V of the bare magnesium to −1.274 V. Generally, the sparking sculpture and then etching route demonstrates a low-cost, high-efficacy method to fabricate a micro-nano structure hydrophobic surface on magnesium alloy. Furthermore, our research on the creating of micro-nano structure roughness surface and the hydrophobic treatment can be easily extended to the

  14. The fabrication and hydrophobic property of micro-nano patterned surface on magnesium alloy using combined sparking sculpture and etching route

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Yunfeng [Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001 (China); Wang, Yaming, E-mail: wangyaming@hit.edu.cn [Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001 (China); Liu, Hao [Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001 (China); Liu, Yan [Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022 (China); Guo, Lixin; Jia, Dechang; Ouyang, Jiahu; Zhou, Yu [Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001 (China)

    2016-12-15

    Highlights: • A hydrophobic micro-nano roughness surface on magnesium was fabricated. • Micro-nano structure derives from duplicating ‘over growth’ regions by MAO. • 7–9 μm micro-scale big pores insetting with nano-scale fine pores were fabricated. • Hydrophobicity of micro-nano surface was improved by chemical decoration and stearic treatment. - Abstract: Magnesium alloy with micro-nano structure roughness surface, can serve as the loading reservoirs of medicine capsule and industrial lubricating oil, or mimic ‘lotus leaf’ hydrophobic surface, having the potential applications in medical implants, automobile, aerospace and electronic products, etc. Herein, we propose a novel strategy to design a micro-nano structure roughness surface on magnesium alloy using combined microarc sparking sculpture and etching in CrO{sub 3} aqueous solution. A hydrophobic surface (as an applied example) was further fabricated by chemical decorating on the obtained patterned magnesium alloy surface to enhance the corrosion resistance. The results show that the combined micro-nano structure of 7–9 μm diameter big pores insetting with nano-scale fine pores was duplicated after etched the sparking sculptured ‘over growth’ oxide regions towards the magnesium substrate. The micro-nano structure surface was chemically decorated using AgNO{sub 3} and stearic acid, which enables the contact angle increased from 60° to 146.8°. The increasing contact angle is mainly attributed to the micro-nano structure and the chemical composition. The hydrophobic surface of magnesium alloy improved the corrosion potential from −1.521 V of the bare magnesium to −1.274 V. Generally, the sparking sculpture and then etching route demonstrates a low-cost, high-efficacy method to fabricate a micro-nano structure hydrophobic surface on magnesium alloy. Furthermore, our research on the creating of micro-nano structure roughness surface and the hydrophobic treatment can be easily

  15. Digital Marketer: Facing Digital Marketing Opportunities

    OpenAIRE

    NEGRICEA, Costel Iliuta; PURCAREA, Ioan Matei

    2015-01-01

    We are witnessing the emergence of new ecosystems thanks to digital disruption, marketers being challenged to bring marketing operations into the digital era, enhance the customer journey and shift consumer behavior with the help of the digital tools, while actively encouraging feedback from users, and building a circle of trust with the company’s audience. Recent findings showed clear differences of consumers’ preferences and of what marketers say they’re doing with digital technology. Respo...

  16. Palate Shape and Depth: A Shape-Matching and Machine Learning Method for Estimating Ancestry from Human Skeletal Remains.

    Science.gov (United States)

    Maier, Christopher A; Zhang, Kang; Manhein, Mary H; Li, Xin

    2015-09-01

    In the past, assessing ancestry relied on the naked eye and observer experience; however, replicability has become an important aspect of such analysis through the application of metric techniques. This study examines palate shape and assesses ancestry quantitatively using a 3D digitizer and shape-matching and machine learning methods. Palate curves and depths were recorded, processed, and tested for 376 individuals. Palate shape was an accurate indicator of ancestry in 58% of cases. Cluster analysis revealed that the parabolic, hyperbolic, and elliptical shapes are discrete from one another. Preliminary results indicate that palate depth in Hispanic individuals is greatest. Palate shape appears to be a useful indicator of ancestry, particularly when assessed by a computer. However, these data suggest that palate shape is not useful for assessing ancestry in Hispanic individuals. Although ancestry may be determined from palate shape, the use of multiple features is recommended and more reliable. © 2015 American Academy of Forensic Sciences.

  17. USNA DIGITAL FORENSICS LAB

    Data.gov (United States)

    Federal Laboratory Consortium — To enable Digital Forensics and Computer Security research and educational opportunities across majors and departments. Lab MissionEstablish and maintain a Digital...

  18. Considering a Possible Future for Digital Journalism

    NARCIS (Netherlands)

    Deuze, M.

    2017-01-01

    Developments shaping digital journalism seem to speeding up at the start of the 21st century. Social media enable radical new ways to gather and verify sources and information. Hardware and software power innovative storytelling formats, combining platforms and channels, adding interactivity to the

  19. Assessment and Integrity in the Digital Arts.

    Science.gov (United States)

    Clayton, Michael; Watkins, Adam

    2002-01-01

    Discusses problems with using tutorials for digital art assignments in higher education, including plagiarism, and suggests focusing on concept mastery and customizing assignments for better assessment. Provides three examples, including using shapes to draw a series of objects, designing a thumbnail gallery of 10 images, and creating a computer…

  20. Shape memory alloys

    International Nuclear Information System (INIS)

    Kaszuwara, W.

    2004-01-01

    Shape memory alloys (SMA), when deformed, have the ability of returning, in certain circumstances, to their initial shape. Deformations related to this phenomenon are for polycrystals 1-8% and up to 15% for monocrystals. The deformation energy is in the range of 10 6 - 10 7 J/m 3 . The deformation is caused by martensitic transformation in the material. Shape memory alloys exhibit one directional or two directional shape memory effect as well as pseudoelastic effect. Shape change is activated by temperature change, which limits working frequency of SMA to 10 2 Hz. Other group of alloys exhibit magnetic shape memory effect. In these alloys martensitic transformation is triggered by magnetic field, thus their working frequency can be higher. Composites containing shape memory alloys can also be used as shape memory materials (applied in vibration damping devices). Another group of composite materials is called heterostructures, in which SMA alloys are incorporated in a form of thin layers The heterostructures can be used as microactuators in microelectromechanical systems (MEMS). Basic SMA comprise: Ni-Ti, Cu (Cu-Zn,Cu-Al, Cu-Sn) and Fe (Fe-Mn, Fe-Cr-Ni) alloys. Shape memory alloys find applications in such areas: automatics, safety and medical devices and many domestic appliances. Currently the most important appears to be research on magnetic shape memory materials and high temperature SMA. Vital from application point of view are composite materials especially those containing several intelligent materials. (author)

  1. Caracterização através de análise química da escultura portuguesa sobre madeira de produção erudita e de produção popular da época barroca Characterization by chemical analysis of portuguese baroque polychrome wooden sculptures with erudite and popular features

    Directory of Open Access Journals (Sweden)

    Carolina Barata

    2013-01-01

    Full Text Available Making use of several analytical techniques, four erudite and four popular Portuguese baroque wooden sculptures were studied. The materials and techniques employed were identified and the relationship between their artistic quality and the materials used was investigated. In general, the pigments were common at the time, but one pigment discovered in the beginning of the 18th century and two rare arsenic pigments were also identified. In popular sculptures cost-saving was detected, particularly concerning the gold leaf. Regarding some technical procedures identified, recommendations found in historical documents did not seem to have been entirely followed, neither in erudite nor in popular sculptures.

  2. Shape-memory actuated gimbal

    Science.gov (United States)

    Carpenter, Bernie F.; Head, R. J.; Gehling, Russ

    1995-05-01

    Future spacecraft systems will require advanced positioning systems to meet stringent reliability, vibration, lightweighting, and cost requirements. Current devices employing stepping motor and gear reduction assemblies may not be able to meet future design needs. A shape memory alloy (SMA) actuated multiaxis gimbal has been developed that provides solutions to these mechanism issues. SMAs utilize a thermally activated reversible phase transformation to recover their original heat-treated shape or to generate high-recovery stresses. when heated above a critical transformation temperature. NiTiCu alloy wires have been wound into helical spring actuators to control gimbal rotation using mechanical elements to convert the linear motion of antagonistic SMA springs into rotation. Analytical models that incorporate the nonlinear hysteretic behavior of SMAs have been generated to aid in spring design and SMA conditioning. Indirect resistive hearing of SMA springs was accomplished using programmable power supplies. A potentiometer sensor attached to the output axis of the gimbal was used to provide angular feedback to a digital controller. An antagonistic approach was used to independently control heating and cooling of the opposing spring element for improved stability and bandwidth response. Proportional-integral derivative control was implemented on the active SMA spring to obtain the desired level of rotation while overcoming an external load. Mechanical testing was conducted on the gimbal to assess control system stability, dynamic response, and power requirements. Torque in excess of 3 in./lb was generated using less than 20 watts of applied power.

  3. [Constructing 3-dimensional colorized digital dental model assisted by digital photography].

    Science.gov (United States)

    Ye, Hong-qiang; Liu, Yu-shu; Liu, Yun-song; Ning, Jing; Zhao, Yi-jiao; Zhou, Yong-sheng

    2016-02-18

    To explore a method of constructing universal 3-dimensional (3D) colorized digital dental model which can be displayed and edited in common 3D software (such as Geomagic series), in order to improve the visual effect of digital dental model in 3D software. The morphological data of teeth and gingivae were obtained by intra-oral scanning system (3Shape TRIOS), constructing 3D digital dental models. The 3D digital dental models were exported as STL files. Meanwhile, referring to the accredited photography guide of American Academy of Cosmetic Dentistry (AACD), five selected digital photographs of patients'teeth and gingivae were taken by digital single lens reflex camera (DSLR) with the same exposure parameters (except occlusal views) to capture the color data. In Geomagic Studio 2013, after STL file of 3D digital dental model being imported, digital photographs were projected on 3D digital dental model with corresponding position and angle. The junctions of different photos were carefully trimmed to get continuous and natural color transitions. Then the 3D colorized digital dental model was constructed, which was exported as OBJ file or WRP file which was a special file for software of Geomagic series. For the purpose of evaluating the visual effect of the 3D colorized digital model, a rating scale on color simulation effect in views of patients'evaluation was used. Sixteen patients were recruited and their scores on colored and non-colored digital dental models were recorded. The data were analyzed using McNemar-Bowker test in SPSS 20. Universal 3D colorized digital dental model with better color simulation was constructed based on intra-oral scanning and digital photography. For clinical application, the 3D colorized digital dental models, combined with 3D face images, were introduced into 3D smile design of aesthetic rehabilitation, which could improve the patients' cognition for the esthetic digital design and virtual prosthetic effect. Universal 3D colorized

  4. ARSITEKTUR DVD (Digital Virtual Design

    Directory of Open Access Journals (Sweden)

    Danny Santoso Mintorogo

    2000-01-01

    Full Text Available Soon after the millennium year of 2000 and toward 21th century, the ways of architecture design will be a great change from traditional hand design and drawings to super computer digital virtual design models with tremendous of high-end architectural 3D software domains. Virtual Technology will be a plus to architectural design stage to obtain several "scheme" and observe with real - time feedback of the quality (height, light, furniture, shape, and environment as well as the sequential of the space, site context or massing studies. Abstract in Bahasa Indonesia : Strategi dalam desain arsitektur pada abad 22 atau setelah tahun milinium 2000 ini akan banyak didominasi dengan perangkap teknologi canggih yang tentunya akan mengandalkan pada perangkap keras (komputer dan perangkap lunak (software untuk tujuan desain arsitektur secara digital. Teknologi "Virtual" akan dimanfaatkan untuk bidang arsitektur dalam mengoptimasikan disain arsitektur secara digital maya, untuk mengobservasi/mengkaji kwalitas ruang, model suatu ruang/massa secara maya dalam phase perancangan arsitektur. Kata kunci: arsitektur, desain, digital, maya.

  5. Digital forensics digital evidence in criminal investigations

    CERN Document Server

    Marshall, Angus McKenzie

    2009-01-01

    The vast majority of modern criminal investigations involve some element of digital evidence, from mobile phones, computers, CCTV and other devices. Digital Forensics: Digital Evidence in Criminal Investigations provides the reader with a better understanding of how digital evidence complements "traditional" scientific evidence and examines how it can be used more effectively and efficiently in a range of investigations. Taking a new approach to the topic, this book presents digital evidence as an adjunct to other types of evidence and discusses how it can be deployed effectively in s

  6. Digital Disruption

    DEFF Research Database (Denmark)

    Rosenstand, Claus Andreas Foss

    Disruption var frem til slutningen af 2016 i Danmark et ord, som kun få kendte og endnu færre havde en holdning til. Nu er der imidlertid sat fokus på begrebet fra allerhøjeste nationale sted, idet regeringen har taget initiativ til nedsættelse af det, Statsminister Lars Løkke Rasmussen indtil...... videre kalder et ”disruption-råd”. Faktisk er rådet skrevet ind i 2016 regeringsgrundlaget for VLK-regeringen. Disruption af organisationer er ikke et nyt fænomen; men hastigheden, hvormed det sker, er stadig accelererende. Årsagen er den globale mega-trend: Digitalisering. Og derfor er specielt digital...... disruption en sag for os alle. Derfor er det også for vigtigt et emne til, at det udelukkende behandles i elitære videnskabelige, industrielle og politiske kredse. Der er behov for en bredere samfundsdebat; og bogen er et forskningsbaseret bidrag ind i denne debat. For a kvalificere debatten om disruption i...

  7. Digital Copies and Digital Museums in a Digital Cultural Policy

    Directory of Open Access Journals (Sweden)

    Ole Marius Hylland

    2017-09-01

    Full Text Available This article investigates how a digital turn and digital copies have influenced ideas, roles and authorities within a national museum sector. It asks whether digital mu-seums and their digital reproductions expand and/or challenge a traditional cul-tural policy. Two specific cases are highlighted to inform the discussion on these questions - the Norwegian digital museum platform DigitaltMuseum and Google Art Project. The article argues that there is a certain epochalism at play when the impact of a digital turn is analysed. At the same time, some clear major changes are taking place, even if their impact on cultural policies might be less than expec-ted. I propose that one of the changes is the replacing of authenticity with accessi-bility as the primary legitimating value of museum objects.

  8. Shaping of planetary nebulae

    International Nuclear Information System (INIS)

    Balick, B.

    1987-01-01

    The phases of stellar evolution and the development of planetary nebulae are examined. The relation between planetary nebulae and red giants is studied. Spherical and nonspherical cases of shaping planetaries with stellar winds are described. CCD images of nebulae are analyzed, and it is determined that the shape of planetary nebulae depends on ionization levels. Consideration is given to calculating the distances of planetaries using radio images, and molecular hydrogen envelopes which support the wind-shaping model of planetary nebulae

  9. Digital technology shaping teaching practices in higher education

    Directory of Open Access Journals (Sweden)

    Monika eAkbar

    2016-02-01

    Full Text Available In their quest on being effective, educators have always experimented with the art of teaching. Teaching has evolved over centuries by adopting new approaches, methods, tools, and technologies to reach a wider audience. As technologies advance, educators should carefully use, evaluate, and adopt the changes to utilize the technologies and track of their impacts. This article provides a mini review to briefly describe some of the existing technical achievements that are used in higher education along with their challenges.

  10. Digital Expressions and Networks Shape Intercultural Opportunities for Youth

    Science.gov (United States)

    Corriero, Jennifer; O'Doherty, Liam

    2013-01-01

    The world needs young people with hope, vision, empathy and the ability to transform ideals into reality. As economies, societies, and geopolitical environments become more globally interconnected, youth are faced with a more complex world where intercultural communication skills and experiences are emerging as essential elements for addressing…

  11. Sanguibacter gelidistatuariae sp. nov., a novel psychrotolerant anaerobe from an ice sculpture in Antarctica, and emendation of descriptions of the family Sanguibacteraceae, the genus Sanguibacter and species S. antarcticus, S. inulinus, S. kedieii, S. marinus, S. soli and S. suarezii.

    Science.gov (United States)

    Pikuta, Elena V; Lyu, Zhe; Williams, Melissa D; Patel, Nisha B; Liu, Yuchen; Hoover, Richard B; Busse, Hans-Jürgen; Lawson, Paul A; Whitman, William B

    2017-05-01

    A novel psychrotolerant bacterium, strain ISLP-3T, was isolated from a sample of naturally formed ice sculpture on the shore of Lake Podprudnoye in Antarctica. Cells were motile, stained Gram-positive, non-spore-forming, straight or slightly curved rods with the shape of a baseball bat. The new isolate was facultatively anaerobic and catalase-positive. Growth occurred at 3-35 °C with an optimum at 22-24 °C, 0-2 % (w/v) NaCl with an optimum at 0.3 % and pH 6.2-9.5 with an optimum at pH 7.5. Strain ISLP-3T grew on several carbon sources, with the best growth on cellobiose. The isolate possessed ureolytic activity but growth was inhibited by urea. The strain was sensitive to: ampicillin, gentamycin, kanamycin rifampicin, tetracycline and chloramphenicol. Major fatty acids were: anteiso-C15 : 0, iso-C16 : 0, C16 : 0, C14 : 0 and iso-C15 : 0. The predominant menaquinone was MK-9(H4). The genomic G+C content was 69.5 mol%. The 16S rRNA gene showed 99 % sequence similarity to that of Sanguibacter suarezii ST-26T, but their recA genes shared ≤91 % sequence similarity, suggesting that this new isolate represents a novel species within the genus Sanguibacter. This conclusion was supported by average nucleotide identity, which was ≤91 % to the most closely related strain. The name Sanguibacter gelidistatuariae sp. nov. is proposed for the novel species with the type strain ISLP-3T=ATCC TSD-17T=DSM 100501T=JCM 30887T). The complete genome draft sequence of ISLP-3T was deposited under IMG OID 2657245272. Emendments to the descriptions of related taxa have been made based on experimental data from our comparative analysis.

  12. Digital platforms as enablers for digital transformation

    DEFF Research Database (Denmark)

    Hossain, Mokter; Lassen, Astrid Heidemann

    transformation is crucial. This study aims at exploring how organizations are driven towards transformation in various ways to embrace digital platforms for ideas, technologies, and knowledge. It shows the opportunities and challenges digital platforms bring in organizations. It also highlights underlying......Digital platforms offer new ways for organizations to collaborate with the external environment for ideas, technologies, and knowledge. They provide new possibilities and competence but they also bring new challenges for organizations. Understanding the role of these platforms in digital...... mechanisms and potential outcomes of various digital platforms. The contribution of the submission is valuable for scholars to understand and further explore this area. It provides insight for practitioners to capture value through digital platforms and accelerate the pace of organizations’ digital...

  13. Digital Citizenship District-Wide: Examining the Organizational Evolution of an Initiative

    Science.gov (United States)

    Monterosa, Vanessa M.

    2017-01-01

    District leaders play a pivotal role in shaping federally-mandated policies that impact how digital citizenship curriculum is developed and implemented in schools. Yet, for many school leaders, teaching about digital participation may appear as a daunting and unfamiliar practice. In fact, most educators do not participate in digital communities,…

  14. Educational Applications for Digital Cameras.

    Science.gov (United States)

    Cavanaugh, Terence; Cavanaugh, Catherine

    1997-01-01

    Discusses uses of digital cameras in education. Highlights include advantages and disadvantages, digital photography assignments and activities, camera features and operation, applications for digital images, accessory equipment, and comparisons between digital cameras and other digitizers. (AEF)

  15. Segmentation of Overlapping Shapes using Test Ray Intersections

    DEFF Research Database (Denmark)

    Rasmusson, Allan

    into the correct shapes in a postprocessing step. The postprocessing step is unfortunately often both difficult and computationally expensive. Another approach is to incorporate descriptions of the overlapping shapes into a segmentation algorithm which normally only segments the union of all particle profiles...... provide exact information about shape contours which can be exploited for the separation of overlapping shapes. The resulting procedure may be performed either as a separate postprocessing step after a single contour of all particles is segmented or it may be performed in combination with an existing......As the use of digital images have become standard in everyday bioimaging, people are naturally trying to utilize computer algorithms for automating laborious and repetetive image analysis tasks. A preliminary task is the segmentation of structures of interest from digital images. This may in itself...

  16. Dual beam vidicon digitizer

    International Nuclear Information System (INIS)

    Evans, T.L.

    1976-01-01

    A vidicon waveform digitizer which can simultaneously digitize two independent signals has been developed. Either transient or repetitive waveforms can be digitized with this system. A dual beam oscilloscope is used as the signal input device. The light from the oscilloscope traces is optically coupled to a television camera, where the signals are temporarily stored prior to digitizing

  17. H. Sapiens Digital: From Digital Immigrants and Digital Natives to Digital Wisdom

    Science.gov (United States)

    Prensky, Marc

    2009-01-01

    As we move further into the 21st century, the digital native/digital immigrant paradigm created by Marc Prensky in 2001 is becoming less relevant. In this article, Prensky suggests that we should focus instead on the development of what he calls "digital wisdom." Arguing that digital technology can make us not just smarter but truly wiser, Prensky…

  18. Enabling Digital Literacy

    DEFF Research Database (Denmark)

    Ryberg, Thomas; Georgsen, Marianne

    2010-01-01

    There are some tensions between high-level policy definitions of “digital literacy” and actual teaching practice. We need to find workable definitions of digital literacy; obtain a better understanding of what digital literacy might look like in practice; and identify pedagogical approaches, which...... support teachers in designing digital literacy learning. We suggest that frameworks such as Problem Based Learning (PBL) are approaches that enable digital literacy learning because they provide good settings for engaging with digital literacy. We illustrate this through analysis of a case. Furthermore......, these operate on a meso-level mediating between high-level concepts of digital literacy and classroom practice....

  19. Discriminative Shape Alignment

    DEFF Research Database (Denmark)

    Loog, M.; de Bruijne, M.

    2009-01-01

    , not taking into account that eventually the shapes are to be assigned to two or more different classes. This work introduces a discriminative variation to well-known Procrustes alignment and demonstrates its benefit over this classical method in shape classification tasks. The focus is on two...

  20. Shape from touch

    NARCIS (Netherlands)

    Kappers, A.M.L.; Bergmann Tiest, W.M.

    2014-01-01

    The shape of objects cannot only be recognized by vision, but also by touch. Vision has the advantage that shapes can be seen at a distance, but touch has the advantage that during exploration many additional object properties become available, such as temperature (Jones, 2009), texture (Bensmaia,

  1. Digital information management

    OpenAIRE

    Sridhar, M. S.

    2007-01-01

    Digital libraries and digital information are exciting everyone. Accessing and using digital information needs to be understood in correct perspective. Many feel that digital libraries and Internet are enough and traditional libraries are no more required. The pros and cons in using digital information and appropriateness as well as limitations of the Internet are highlighted in this slide presentation to participants of the training programme.

  2. Digital Sensor Technology

    Energy Technology Data Exchange (ETDEWEB)

    Ted Quinn; Jerry Mauck; Richard Bockhorst; Ken Thomas

    2013-07-01

    The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy, reliability, availability, and maintainability. This report demonstrates these benefits in direct comparisons of digital and analog sensor applications. It also addresses the qualification issues that must be addressed in the application of digital sensor technology.

  3. Digital preservation for heritages

    CERN Document Server

    Lu, Dongming

    2011-01-01

    ""Digital Preservation for Heritages: Technologies and Applications"" provides a comprehensive and up-to-date coverage of digital technologies in the area of cultural heritage preservation, including digitalization, research aiding, conservation aiding, digital exhibition, and digital utilization. Processes, technical frameworks, key technologies, as well as typical systems and applications are discussed in the book. It is intended for researchers and students in the fields of computer science and technology, museology, and archaeology. Dr. Dongming Lu is a professor at College of Computer Sci

  4. Dual charge-to-digital converter type CAMAC 715

    International Nuclear Information System (INIS)

    Kreciejewski, M.; Kulka, Z.

    1986-05-01

    A dual two input 10 bit resolution charge-to-digital converter type 715 is described. It enables digital measurement of charges carried by nanosecond current pulses from two ionizing radiation detectors. Input current pulses are first gated by high-speed linear gates and then are integrated. Resulting amplitudes of voltage pulses are converted with use of Wilkinson rundown technique. A principle of operation as well as a design and performance of charge digitizer are described. The 715 converter is intended mainly for digital n-γ pulse shape discrimination. 8 refs., 4 figs. (author)

  5. Analisis Kondisi Digital Poverty di Indonesia

    Directory of Open Access Journals (Sweden)

    Anton Susanto

    2016-12-01

    , connected and digitally “wealthy”. This research focus on that issue in Indonesia by mapping and analysis the digital poverty. The reseacrh result will be usefull to shaping the pro-poor policy for ICT sector such as universal telecomunication service. By using the data collected from Survey of ICT Indicator for Households and Inviduals that has held in 3 years (2014, 2015 and 2016 and also complemented by data Podes 2014, this reseach found that increasing of both of the  digitally “wealthy” and extremely digitally poor. ICT development has encouraged the use of the internet for e-commerce activities and interaction of e-government and e-business, but on the other hand there is the potential of digital exclusion for individuals who are in conditions of extremely digitally poor. The study also found that in addition of economic factors, factors condition of Human Resources and ICT and electrical supply also affect the digital poverty. Of these three factors, the condition of human resources is the most influential factor.

  6. Cognitive Hacking and Digital Government: Digital Identity

    OpenAIRE

    Paul Thompson

    2004-01-01

    Recently the National Center for Digital Government held a workshop on "The Virtual Citizen: Identity, Autonomy, and Accountability: A Civic Scenario Exploration of the Role of Identity in On-Line. Discussions at the workshop focused on five scenarios for future authentication policies with respect to digital identity. The underlying technologies considered for authentication were: biometrics: cryptography, with a focus on digital signatures; secure processing/computation; and reputation syst...

  7. The exchangeability of shape

    Directory of Open Access Journals (Sweden)

    Kaba Dramane

    2010-10-01

    Full Text Available Abstract Background Landmark based geometric morphometrics (GM allows the quantitative comparison of organismal shapes. When applied to systematics, it is able to score shape changes which often are undetectable by traditional morphological studies and even by classical morphometric approaches. It has thus become a fast and low cost candidate to identify cryptic species. Due to inherent mathematical properties, shape variables derived from one set of coordinates cannot be compared with shape variables derived from another set. Raw coordinates which produce these shape variables could be used for data exchange, however they contain measurement error. The latter may represent a significant obstacle when the objective is to distinguish very similar species. Results We show here that a single user derived dataset produces much less classification error than a multiple one. The question then becomes how to circumvent the lack of exchangeability of shape variables while preserving a single user dataset. A solution to this question could lead to the creation of a relatively fast and inexpensive systematic tool adapted for the recognition of cryptic species. Conclusions To preserve both exchangeability of shape and a single user derived dataset, our suggestion is to create a free access bank of reference images from which one can produce raw coordinates and use them for comparison with external specimens. Thus, we propose an alternative geometric descriptive system that separates 2-D data gathering and analyzes.

  8. The sculpture of master stonemason Juan Álvarez (1544-1613 and funerary art in the city of Plasencia

    Directory of Open Access Journals (Sweden)

    Vicente Méndez Hernán

    2017-08-01

    Full Text Available The unprecedented agreement undertaken by the Poor Clares of Plasencia in 1607 to accept the patronage of Don Rodrigo Calderón and his wife Doña Inés Vargas, and in turn take charge of their funerals and the statues in attitude of prayer to which Juan Álvarez had already given shape, has allowed the author to link this master to the funerals held in Plasencia between 1596 and 1610/15.

  9. Digital multilayer tomography

    International Nuclear Information System (INIS)

    Dueber, C.; Klose, K.J.; Thelen, M.

    1991-01-01

    With digital multilayer tomography a sequence of projection images is recorded by an image intensifier television system and stored as digital data during a linear run of a layer sequence. Using this data record, tomograms of the examined body region can be computed for any layer thickness by shifts and superimposition of the single projections later at a digital workstation. The qualities of digital and conventional tomograms are basically comparable. A drawback of digital tomography is its lower local resolution (512 x 512 image matrix), advantages are a lower radiation exposure, a shorter patient examination time, and the facilities of digital image processing (later processing, archive setup, transmission). (orig.) [de

  10. Playtesting The Digital Playground

    DEFF Research Database (Denmark)

    Majgaard, Gunver; Jessen, Carsten

    2009-01-01

    Being able to be absorbed in play in the digital playground is motivating for children who are used digital computer games. The children can play and exercise outdoors while using the same literacy as in indoor digital games. This paper presents a new playground product where an outdoor playground...... has been combined with digital games. The playground was tested in natural surroundings in a school yard and the findings about the interplay between digital and analog play are described here. Finally balancing in digital and analog games is discussed....

  11. Logic of the digital

    CERN Document Server

    Evens, Aden

    2015-01-01

    Building a foundational understanding of the digital, Logic of the Digital reveals a unique digital ontology. Beginning from formal and technical characteristics, especially the binary code at the core of all digital technologies, Aden Evens traces the pathways along which the digital domain of abstract logic encounters the material, human world. How does a code using only 0s and 1s give rise to the vast range of applications and information that constitutes a great and growing portion of our world? Evens' analysis shows how any encounter between the actual and the digital must cross an ontolo

  12. Experience with digital mammography

    Directory of Open Access Journals (Sweden)

    G. P. Korzhenkova

    2011-01-01

    Full Text Available The use of digital techniques in mammography has become a last step for completing the process of digitization in diagnostic imaging. It is assumed that such a spatial decision will be required for digital mammography, as well as for high-resolution intensifying screen-film systems used in conventional mammography and that the digital techniques will be limited by the digitizer pixel size on detecting minor structures, such as microcalcifications. The introduction of digital technologies in mammography involves a tight control over an image and assures its high quality.

  13. Digital media promoting new approaches to subject specific didactics in visual arts education in primary school, high school, teacher education and university education

    DEFF Research Database (Denmark)

    Skov, Kirsten

    Digital media promoting new approaches to subject specific didactics in visual arts education in primary school, high school, teacher education and university education The symposium addresses current developments in visual arts education based on empirical projects from different levels...... of the educational system. The purpose is to discuss to which extend digital media can be seen as an integrated part of existing theory mainly based on developments from analog media or rather give rise to think subject specific didactics differently. Recent developments like visual culture, contemporary arts...... processes of meaning making. These constellations contrast traditional virtues of separating visual arts education in drawing, painting, sculpturing skills as well as traditional analytical skills based on the idea of a ‘work’. Governmental requests for implementing IT in visual arts curriculum as well...

  14. Mismatch-shaping switching for two-capacitor DAC

    DEFF Research Database (Denmark)

    Steensgaard-Madsen, Jesper; Moon, U.; Temes, G.C.

    1998-01-01

    A mismatch-shaping scheme is proposed for a two-capacitor digital-to-analogue converter (DAC). It uses a delta-sigma loop for finding the optimal switching sequence for each input word. Simulations indicate that the scheme can be used for the realisation of DACs with 16 bit linearity and SNR...

  15. Mismatch-Shaped Pseudo-Passive Two-Capacitor DAC

    DEFF Research Database (Denmark)

    Steensgaard-Madsen, Jesper; Moon, Un-Ku; Temes, Gabor C.

    1999-01-01

    interpolation filter, but arbitrary properties of the overall interpolation characteristic can be assured.Simulations indicate that the scheme can be used for the realization of DACs with 16-bit linearity and SNR performance, with only 0.1% capacitance accuracy. The DAC is pseudo-passive, i.e. an active element......A simple mismatch-shaping scheme is proposed for a two-capacitor DAC. Unlike in other mismatch-shaping systems, the shaped error is generated by direct filtering of a well-defined bounded signal, which can be generated as white noise. The operation is closely related to a specific digital...

  16. Digital signal processing based multi channel analyzer

    International Nuclear Information System (INIS)

    Saklani, Vipin; Meenakshi Sundari, A.; Rai, A.K.; Sarma, C.V.R.

    2013-01-01

    Gamma Ray Spectrometry is an essential tool for mapping radio elemental concentrations and has found widespread applications in mineral exploration, geological mapping and environmental mapping. Spectrometry based on analog amplifiers with Gaussian pulse shaping has been used for more than 40 years. Digital electronics and digital signal processing methods have enhanced the spectrometer specifications. This paper presents the design and development of a FPGA based Gamma Ray Spectrometer featuring 1024 channel Multi Channel Analyser (MCA) with NaI(Tl) scintillation detector. The system shows significant improvements in energy resolution, count rate capability and dead time as compared to its analog counterpart. (author)

  17. Locally Situated Digital Representation of Indigenous Knowledge

    DEFF Research Database (Denmark)

    Winschiers-Theophilus, Heike; Jensen, Kasper Løvborg; Rodil, Kasper

    2012-01-01

    Digital re-presentation of indigenous knowledge remains an absurdity as long as we fail to deconstruct the prevalent design paradigm and techniques continuously re-framing technology within a western epistemology. This paper discusses key challenges in attempts of co-constructing a digital...... representation based on experiences from a longitudinal community-centred research project in rural Africa. In a quest to shape design from a locally situated viewpoint, we co-design a 3D visualization of an African village with its inhabitants. Prior invisible local perspectives, as well as dominant designer...

  18. Shape memory polyurethane nanocomposites

    Science.gov (United States)

    Cao, Feina

    Shape memory polymers are smart materials which can remember their original shapes. However, the low recovery stress and low mechanical strength limit the commercial applications of shape memory polymers. In this study, nanoclays were introduced to shape memory polyurethanes (SMPU) to augment these properties by enhance the network of SMPU. Several factors which influence the shape recovery stress were evaluated, including the nature of polymer chain by using different monomers, type of clay particles, extent of filler dispersion, clay content and deformation conditions. It was found that only reactive clay particles were well dispersed into polyurethane matrix by the tethering between --CH2CH 2OH functional groups in clay surfactants and polyurethane chains. Two different shape memory polyurethanes (Systems I & II) prepared by bulk polymerization were compared. The shape memory effect of System I was triggered by melting of the soft segment crystals, while that of System II was by glass transition of the soft segments. It was seen that the reactive clay particles dispersed well in both polyurethane matrices and augmented the recovery stress, e.g., 20% increase with 1 wt % nanoclay in System I and 40% increase with 5 wt % nanoclay in System II were observed. In System I, clay particles interfered with soft segment crystallization, and promoted phase mixing between the hard and soft segments, thus affecting the fixity and recovery ratio. Nevertheless, the soft segment crystallinity was still enough and in some cases increased due to stretching to exhibit excellent shape fixity and shape recovery ratio. The higher loading of clay particles accelerated the stress relaxation, resulting in reduction of recovery stress. In System II, no significant effect of clay particles in phase separation was observed, so there was no influence of clay on shape fixity and recovery ratio. The recovery stress increased with reactive nanoclay content. It was also found that the recovery

  19. Shaping the Global Environment

    Science.gov (United States)

    2002-04-09

    SHAPING THE GLOBAL ENVIRONMENT BY LIEUTENANT COLONEL MICHAEL D. ELLERBE United States Army DISTRIBUTION STATEMENT A: Approved for public release...THE GLOBAL ENVIRONMENT by Lieutenant Colonel Michael D. Ellerbe United States Army Colonel Jef Troxel Project Advisor The views expressed in this...Distribution is unlimited. ii ABSTRACT AUTHOR: Michael D. Ellerbe TITLE: SHAPING THE GLOBAL ENVIRONMENT FORMAT: Strategy Research Project DATE: 09 April

  20. Successful replantation in ten-digit amputation.

    Science.gov (United States)

    Kantarci, Umit; Cepel, Selim; Buldu, Halil

    2010-01-01

    Amputations involving ten digits are very rare because of different lengths of the digits. A 34-year-old man working in a printing house presented one hour after guillotine amputation involving all ten digits. Surgery was initiated 80 minutes after admission and took seven hours. Under axillary anesthesia, the operation was performed by two teams each consisting of two microsurgeons and two assistants. Replantation was completed without the use of any skin graft or flap. Fingertip examination showed poor arterial circulation in the second, third, and fourth digits of the left hand after 24 hours of replantation and surgical exploration was performed, during which anastomosis of the ulnar digital artery of the second digit was re-established and a Y-shaped vein graft was placed at the level of the third web to restore revascularization of the third and fourth digits. However, these interventions did not prevent the development of necrosis in the distal segment of the fourth digit which resulted in dry gangrene that required amputation. After 38 months of replantation, radiographic examination showed complete union in all fingers without malunion or damage to the joint surface and about 8 degrees of medial angulation in the proximal phalanx of the fourth digit of the right hand. The patient did not have difficulty in performing daily activities and had a considerably good pinching. Losses of active range of motion of the metacarpophalangeal and interphalangeal joints were within the rage of 10 to 30 degrees in both hands. In the assessment of sensation, static and dynamic two-point discrimination test results were 6.1 mm and 4.0 mm, respectively.

  1. Shape memory alloy engine

    International Nuclear Information System (INIS)

    Tanaka, M.

    1992-01-01

    This paper discusses a shape memory alloy engine, developed for the purpose of extracting the mechanical energy from a small difference in temperature. The engine is mainly composed of two pulleys (high temperature and low temperature) and single belt made of the nickel titanium shape memory alloy. The alloy memorizes a shape arcing in the direction opposite to the direction of the belt arc around the pulleys. When the temperature of the belt which is in contact with the high temperature pulley rises above the transformation temperature, a return to the memorized shape generates a force which rotates the pulleys. To make the heat transfer more effective, the engine was designed so that the lower part of the two pulleys are embedded in hot and cold water, respectively. To predict the performance of the shape memory alloy engine, the stress change of the shape memory alloy caused by temperature change has been also investigated with the bending stress test, and a torque loss of the engine system was measured. The predicted results were coincident with the output power experiment

  2. On Characterizing Particle Shape

    Science.gov (United States)

    Ennis, Bryan J.; Rickman, Douglas; Rollins, A. Brent; Ennis, Brandon

    2014-01-01

    It is well known that particle shape affects flow characteristics of granular materials, as well as a variety of other solids processing issues such as compaction, rheology, filtration and other two-phase flow problems. The impact of shape crosses many diverse and commercially important applications, including pharmaceuticals, civil engineering, metallurgy, health, and food processing. Two applications studied here include the dry solids flow of lunar simulants (e.g. JSC-1, NU-LHT-2M, OB-1), and the flow properties of wet concrete, including final compressive strength. A multi-dimensional generalized, engineering method to quantitatively characterize particle shapes has been developed, applicable to both single particle orientation and multi-particle assemblies. The two-dimension, three dimension inversion problem is also treated, and the application of these methods to DEM model particles will be discussed. In the case of lunar simulants, flow properties of six lunar simulants have been measured, and the impact of particle shape on flowability - as characterized by the shape method developed here -- is discussed, especially in the context of three simulants of similar size range. In the context of concrete processing, concrete construction is a major contributor to greenhouse gas production, of which the major contributor is cement binding loading. Any optimization in concrete rheology and packing that can reduce cement loading and improve strength loading can also reduce currently required construction safety factors. The characterization approach here is also demonstrated for the impact of rock aggregate shape on concrete slump rheology and dry compressive strength.

  3. Shapes of interacting RNA complexes

    DEFF Research Database (Denmark)

    Fu, Benjamin Mingming; Reidys, Christian

    2014-01-01

    Shapes of interacting RNA complexes are studied using a filtration via their topological genus. A shape of an RNA complex is obtained by (iteratively) collapsing stacks and eliminating hairpin loops.This shape-projection preserves the topological core of the RNA complex and for fixed topological...... genus there are only finitely many such shapes. Our main result is a new bijection that relates the shapes of RNA complexes with shapes of RNA structures. This allows to compute the shape polynomial of RNA complexes via the shape polynomial of RNA structures. We furthermore present a linear time uniform...... sampling algorithm for shapes of RNA complexes of fixed topological genus....

  4. On the Formation of Digits and Joints during Limb Development.

    Science.gov (United States)

    Hiscock, Tom W; Tschopp, Patrick; Tabin, Clifford J

    2017-06-05

    Critical steps in forming the vertebrate limb include the positioning of digits and the positioning of joints within each digit. Recent studies have proposed that the iterative series of digits is established by a Turing-like mechanism generating stripes of chondrogenic domains. However, re-examination of available data suggest that digits are actually patterned as evenly spaced spots, not stripes, which then elongate into rod-shaped digit rays by incorporating new cells at their tips. Moreover, extension of the digit rays and the patterning of the joints occur simultaneously at the distal tip, implying that an integrated model is required to fully understand these processes. Copyright © 2017 Elsevier Inc. All rights reserved.

  5. Coastal California Digital Imagery

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This digital ortho-imagery dataset is a survey of coastal California. The project area consists of approximately 3774 square miles. The project design of the digital...

  6. Digital Privacy Legislation Awareness

    OpenAIRE

    Henry Foulds; Magda Huisman; Gunther R. Drevin

    2013-01-01

    Privacy is regarded as a fundamental human right and it is clear that the study of digital privacy is an important field. Digital privacy is influenced by new and constantly evolving technologies and this continuous change makes it hard to create legislation to protect people's privacy from being exploited by misuse of these technologies. This study aims to benefit digital privacy legislation efforts by evaluating the awareness and perceived importance of digital privacy legislation among...

  7. Basic digital signal processing

    CERN Document Server

    Lockhart, Gordon B

    1985-01-01

    Basic Digital Signal Processing describes the principles of digital signal processing and experiments with BASIC programs involving the fast Fourier theorem (FFT). The book reviews the fundamentals of the BASIC program, continuous and discrete time signals including analog signals, Fourier analysis, discrete Fourier transform, signal energy, power. The text also explains digital signal processing involving digital filters, linear time-variant systems, discrete time unit impulse, discrete-time convolution, and the alternative structure for second order infinite impulse response (IIR) sections.

  8. Digital asset management.

    Science.gov (United States)

    Humphrey, Clinton D; Tollefson, Travis T; Kriet, J David

    2010-05-01

    Facial plastic surgeons are accumulating massive digital image databases with the evolution of photodocumentation and widespread adoption of digital photography. Managing and maximizing the utility of these vast data repositories, or digital asset management (DAM), is a persistent challenge. Developing a DAM workflow that incorporates a file naming algorithm and metadata assignment will increase the utility of a surgeon's digital images. Copyright 2010 Elsevier Inc. All rights reserved.

  9. Digital Inkjet Textile Printing

    OpenAIRE

    Wang, Meichun

    2017-01-01

    Digital inkjet textile printing is an emerging technology developed with the rise of the digital world. It offers a possibility to print high-resolution images with unlimited color selection on fabrics. Digital inkjet printing brings a revolutionary chance for the textile printing industry. The history of textile printing shows the law how new technology replaces the traditional way of printing. This indicates the future of digital inkjet textile printing is relatively positive. Differen...

  10. Digital voltage discriminator

    International Nuclear Information System (INIS)

    Zhou Zhicheng

    1992-01-01

    A digital voltage discriminator is described, which is synthesized by digital comparator and ADC. The threshold is program controllable with high stability. Digital region of confusion is approximately equal to 1.5 LSB. This discriminator has a single channel analyzer function model with channel width of 1.5 LSB

  11. Behandlingseffekt af Digital Dermatitis

    DEFF Research Database (Denmark)

    Krogh, Kenneth; Thomsen, Peter

    2008-01-01

    af klovlidelser herunder især Digital Dermatitis. Klovregistreringerne viser, at der er stor dynamik og mange nyinfektioner af Digital Dermatitis svarende til problematikken ved mastitis. Behandlingseffekten ved Digital Dermatitis er høj (omkring 90 %) ved den udførte behandling. Behandlingen bestod...

  12. Digital Language Death

    Science.gov (United States)

    Kornai, András

    2013-01-01

    Of the approximately 7,000 languages spoken today, some 2,500 are generally considered endangered. Here we argue that this consensus figure vastly underestimates the danger of digital language death, in that less than 5% of all languages can still ascend to the digital realm. We present evidence of a massive die-off caused by the digital divide. PMID:24167559

  13. Digital language death.

    Directory of Open Access Journals (Sweden)

    András Kornai

    Full Text Available Of the approximately 7,000 languages spoken today, some 2,500 are generally considered endangered. Here we argue that this consensus figure vastly underestimates the danger of digital language death, in that less than 5% of all languages can still ascend to the digital realm. We present evidence of a massive die-off caused by the digital divide.

  14. Reconceptualising Critical Digital Literacy

    Science.gov (United States)

    Pangrazio, Luciana

    2016-01-01

    While it has proved a useful concept during the past 20 years, the notion of "critical digital literacy" requires rethinking in light of the fast-changing nature of young people's digital practices. This paper contrasts long-established notions of "critical digital literacy" (based primarily around the critical consumption of…

  15. Digitization in Maritime Industry

    DEFF Research Database (Denmark)

    Constantiou, Ioanna; Shollo, Arisa; Kreiner, Kristian

    2017-01-01

    Digitization in the maritime industry is expected to transform businesses. The recently introduced mobile technologies in inter-organizational processes is an example of digitization in an industry which moves very slowly towards digital transformation. We focus on the influence of mobile...

  16. Preparing collections for digitization

    CERN Document Server

    Bulow, Anna E

    2010-01-01

    Most libraries, archives and museums are confronting the challenges of providing digital access to their collections. This guide offers guidance covering the end-to-end process of digitizing collections, from selecting records for digitization to choosing suppliers and equipment and dealing with documents that present individual problems.

  17. Digital Dentistry — Digital Impression and CAD/CAM System Applications

    Directory of Open Access Journals (Sweden)

    Gabor Alin-Gabriel

    2017-03-01

    Full Text Available Digital imprint and computer-aided design/computer-aided manufacture (CAD/CAM systems offer several benefits compared to traditional techniques. The use of a CAD/CAM system to scan preparations and generate restorations in-office, removes a second appointment for the patient. The existence of precision benefits in using complete systems and chairside scanning systems, has been proven. CAD/CAM restorations have a good longevity and meet the accepted clinical parameters. New digital impression methods are presently accessible, and before long, the long-awaited goal of sparing patients of one the most unpleasant practices in clinical dentistry, acquiring dental impressions, will be exchanged by intraoral digital scanning. CAD/CAM systems existing nowadays, can feed data through accurate digital scans created from plaster models, straight to manufacturing systems that can shape ceramic or resin restorations with no requirement of a physical copy of the prepared, adjacent, and antagonist teeth.

  18. SHAPE selection (SHAPES) enrich for RNA structure signal in SHAPE sequencing-based probing data

    DEFF Research Database (Denmark)

    Poulsen, Line Dahl; Kielpinski, Lukasz Jan; Salama, Sofie R

    2015-01-01

    transcriptase. Here, we introduce a SHAPE Selection (SHAPES) reagent, N-propanone isatoic anhydride (NPIA), which retains the ability of SHAPE reagents to accurately probe RNA structure, but also allows covalent coupling between the SHAPES reagent and a biotin molecule. We demonstrate that SHAPES...

  19. Shape memory polymer medical device

    Science.gov (United States)

    Maitland, Duncan [Pleasant Hill, CA; Benett, William J [Livermore, CA; Bearinger, Jane P [Livermore, CA; Wilson, Thomas S [San Leandro, CA; Small, IV, Ward; Schumann, Daniel L [Concord, CA; Jensen, Wayne A [Livermore, CA; Ortega, Jason M [Pacifica, CA; Marion, III, John E.; Loge, Jeffrey M [Stockton, CA

    2010-06-29

    A system for removing matter from a conduit. The system includes the steps of passing a transport vehicle and a shape memory polymer material through the conduit, transmitting energy to the shape memory polymer material for moving the shape memory polymer material from a first shape to a second and different shape, and withdrawing the transport vehicle and the shape memory polymer material through the conduit carrying the matter.

  20. Jet Shapes at CMS

    CERN Document Server

    Kurt, Pelin

    2008-01-01

    The CMS (Compact Muon Solenoid) detector will observe high transverse momentum jets produced in the final state of proton-proton collisions at the center of mass energy of 14 TeV. These data will allow us to measure jet shapes, defined as the fractional transverse momentum distribution as a function of the distance from the jet axis. Since jet shapes are sensitive to parton showering processes they provide a good test of Monte Carlo event simulation programs. In this note we present a study of jet shapes reconstructed using calorimeter energies. We compare the predictions of the Monte Carlo generators PYTHIA and HERWIG++. Presented results are expected for $pp$ collisions at 14 TeV assuming an integrated luminosity of 10 pb$^{-1}$.

  1. Laser beam shaping techniques

    Energy Technology Data Exchange (ETDEWEB)

    DICKEY,FRED M.; WEICHMAN,LOUIS S.; SHAGAM,RICHARD N.

    2000-03-16

    Industrial, military, medical, and research and development applications of lasers frequently require a beam with a specified irradiance distribution in some plane. A common requirement is a laser profile that is uniform over some cross-section. Such applications include laser/material processing, laser material interaction studies, fiber injection systems, optical data image processing, lithography, medical applications, and military applications. Laser beam shaping techniques can be divided into three areas: apertured beams, field mappers, and multi-aperture beam integrators. An uncertainty relation exists for laser beam shaping that puts constraints on system design. In this paper the authors review the basics of laser beam shaping and present applications and limitations of various techniques.

  2. Digital signal processing for He3 proportional counter

    International Nuclear Information System (INIS)

    Zeynalov, Sh.S.; Ahmadov, Q.S.

    2010-01-01

    Full text : Data acquisition systems for nuclear spectroscopy have traditionally been based on systems with analog shaping amplifiers followed by analog-to-digital converters. Recently, however, new systems based on digital signal processing make possible to replace the analog shaping and timing circuitry the numerical algorithms to derive properties of the pulse such as its amplitude. DSP is a fully numerical analysis of the detector pulse signals and this technique demonstrates significant advantages over analog systems in some circumstances. From a mathematical point of view, one can consider the signal evolution from the detector to the ADC as a sequence of transformations that can be described by precisely defined mathematical expressions. Digital signal processing with ADCs has the possibility to utilize further information on the signal pulses from radiation detectors. In the experiment each step of the signal generation in the 3He filled proportional counter was described using digital signal processing techniques (DSP). The electronic system has consisted of a detector, a preamplifier and a digital oscilloscope. The pulses from the detector were digitized using a digital storage oscilloscope. This oscilloscope allowed signal digitization with accuracy of 8 bit (256 levels) and with frequency of up to 5 * 10 8 samples/s. As a neutron source was used Cf-252. To obtain detector output current pulse I(t) created by the motions of the ions/electrons pairs was written an algorithm which can easily be programmed using modern computer programming languages.

  3. Digital Living at Home

    DEFF Research Database (Denmark)

    Andersen, Pernille Viktoria Kathja; Christiansen, Ellen Tove

    2013-01-01

    of these user voices has directed us towards a ‘home-keeping’ design discourse, which opens new horizons for design of digital home control systems by allowing users to perform as self-determined controllers and groomers of their habitat. The paper concludes by outlining the implications of a ‘home......Does living with digital technology inevitably lead to digital living? Users talking about a digital home control system, they have had in their homes for eight years, indicate that there is more to living with digital technology than a functional-operational grip on regulation. Our analysis...

  4. La radio digital.

    OpenAIRE

    Cortés, Carlos

    2005-01-01

    La radio digital es un producto de la llamada convergencia digital. Desde la década de1990, nuevos dispositivos electrónicos de recepción y reproducción digital, incluyendo ciertos teléfonos celulares, se comunican entre sí, en los entornos de redes, mediante sencillas interfaces. Por esta razón, ofrecen ventajas antes inexistentes en los medios analógicos. A partir de sistemas de adquisición y producción digital, que comenzaron como simples cintas de audio digital (DAT), la evolución tec...

  5. Digital disruption ?syndromes.

    Science.gov (United States)

    Sullivan, Clair; Staib, Andrew

    2017-05-18

    The digital transformation of hospitals in Australia is occurring rapidly in order to facilitate innovation and improve efficiency. Rapid transformation can cause temporary disruption of hospital workflows and staff as processes are adapted to the new digital workflows. The aim of this paper is to outline various types of digital disruption and some strategies for effective management. A large tertiary university hospital recently underwent a rapid, successful roll-out of an integrated electronic medical record (EMR). We observed this transformation and propose several digital disruption "syndromes" to assist with understanding and management during digital transformation: digital deceleration, digital transparency, digital hypervigilance, data discordance, digital churn and post-digital 'depression'. These 'syndromes' are defined and discussed in detail. Successful management of this temporary digital disruption is important to ensure a successful transition to a digital platform. What is known about this topic? Digital disruption is defined as the changes facilitated by digital technologies that occur at a pace and magnitude that disrupt established ways of value creation, social interactions, doing business and more generally our thinking. Increasing numbers of Australian hospitals are implementing digital solutions to replace traditional paper-based systems for patient care in order to create opportunities for improved care and efficiencies. Such large scale change has the potential to create transient disruption to workflows and staff. Managing this temporary disruption effectively is an important factor in the successful implementation of an EMR. What does this paper add? A large tertiary university hospital recently underwent a successful rapid roll-out of an integrated electronic medical record (EMR) to become Australia's largest digital hospital over a 3-week period. We observed and assisted with the management of several cultural, behavioural and

  6. 3D shape representation with spatial probabilistic distribution of intrinsic shape keypoints

    Science.gov (United States)

    Ghorpade, Vijaya K.; Checchin, Paul; Malaterre, Laurent; Trassoudaine, Laurent

    2017-12-01

    The accelerated advancement in modeling, digitizing, and visualizing techniques for 3D shapes has led to an increasing amount of 3D models creation and usage, thanks to the 3D sensors which are readily available and easy to utilize. As a result, determining the similarity between 3D shapes has become consequential and is a fundamental task in shape-based recognition, retrieval, clustering, and classification. Several decades of research in Content-Based Information Retrieval (CBIR) has resulted in diverse techniques for 2D and 3D shape or object classification/retrieval and many benchmark data sets. In this article, a novel technique for 3D shape representation and object classification has been proposed based on analyses of spatial, geometric distributions of 3D keypoints. These distributions capture the intrinsic geometric structure of 3D objects. The result of the approach is a probability distribution function (PDF) produced from spatial disposition of 3D keypoints, keypoints which are stable on object surface and invariant to pose changes. Each class/instance of an object can be uniquely represented by a PDF. This shape representation is robust yet with a simple idea, easy to implement but fast enough to compute. Both Euclidean and topological space on object's surface are considered to build the PDFs. Topology-based geodesic distances between keypoints exploit the non-planar surface properties of the object. The performance of the novel shape signature is tested with object classification accuracy. The classification efficacy of the new shape analysis method is evaluated on a new dataset acquired with a Time-of-Flight camera, and also, a comparative evaluation on a standard benchmark dataset with state-of-the-art methods is performed. Experimental results demonstrate superior classification performance of the new approach on RGB-D dataset and depth data.

  7. Comparison between GPR measurements and ultrasonic tomography with different inversion algorithms: an application to the base of an ancient Egyptian sculpture

    International Nuclear Information System (INIS)

    Sambuelli, L; Bohm, G; Capizzi, P; Cosentino, P; Cardarelli, E

    2011-01-01

    By late 2008 one of the most important pieces of the 'Museo delle Antichità Egizie' of Turin, the sculpture of the Pharaoh with god Amun, was planned to be one of the masterpieces of a travelling exhibition in Japan. The 'Fondazione Museo delle Antichità Egizie di Torino', who manages the museum, was concerned with the integrity of the base of the statue which actually presents visible signs of restoration dating back to the early 19th century. It was required to estimate the persistence of the visible fractures, to search for unknown ones and to provide information about the overall mechanical strength of the base. To tackle the first question a GPR reflection survey along three sides of the base was performed and the results were assembled in a 3D rendering. As far as the second question is concerned, two parallel, horizontal ultrasonic 2D tomograms across the base were made. We acquired, for each section, 723 ultrasonic signals corresponding to different transmitter and receiver positions. The tomographic data were inverted using four different software packages based upon different algorithms. The obtained velocity images were then compared each other, with the GPR results and with the visible fractures in the base. A critical analysis of the comparisons is finally presented

  8. Vapor deposited sculptured nano-porous titania films by glancing angle deposition for efficiency enhancement in dye-sensitized solar cells

    International Nuclear Information System (INIS)

    Wong, Ming-Show; Lee, Ming-Fu; Chen, Ching-Lun; Huang, Chia-Hua

    2010-01-01

    Sculptured porous titania films as photoanode in dye-sensitized solar cell (DSSC) were prepared using an electron-beam evaporation system with glancing angle deposition (GLAD) method. By controlling the substrate rotation rate and the incident angle of evaporant, titania films of various thicknesses were prepared on ITO glasses. The as-deposited nano-porous films are comprised of helical nano-columns and assembled in an orderly manner with gaps or pores in between, which offer large internal surface area for dye adsorption and direct electron transfer path. There is a positive correlation between the film thickness, film effective surface area, amount of absorbed dye and cell efficiency. The nano-porous films provide a synergistic effect of high surface area, effective route for electron transfer, tight interfaces, and enhanced light trapping, which are all beneficial for higher cell efficiency. The DSSC consisting of a 6 μm titania film, deposited at substrate rotating rate 0.17 rpm and incident angle 73 o , gave a cell efficiency of 6.1%.

  9. Shape memory effect alloys

    International Nuclear Information System (INIS)

    Koshimizu, S.

    1992-01-01

    Although the pseudo- or super-elasticity phenomena and the shape memory effect were known since the 1940's, the enormous curiosity and the great interest to their practical applications emerged with the development of the NITINOL alloy (Nickel-Titanium Naval Ordance Laboratory) by the NASA during the 1960's. This fact marked the appearance of a new class of materials, popularly known as shape memory effect alloys (SMEA). The objective of this work is to present a state-of-the-art of the development and applications for the SMEA. (E.O.)

  10. Covering folded shapes

    Directory of Open Access Journals (Sweden)

    Oswin Aichholzer

    2014-05-01

    Full Text Available Can folding a piece of paper flat make it larger? We explore whether a shape S must be scaled to cover a flat-folded copy of itself. We consider both single folds and arbitrary folds (continuous piecewise isometries \\(S\\to\\mathbb{R}^2\\. The underlying problem is motivated by computational origami, and is related to other covering and fixturing problems, such as Lebesgue's universal cover problem and force closure grasps. In addition to considering special shapes (squares, equilateral triangles, polygons and disks, we give upper and lower bounds on scale factors for single folds of convex objects and arbitrary folds of simply connected objects.

  11. Social Shaping of Innovation

    DEFF Research Database (Denmark)

    Buur, Jacob; Mack, Alexandra

    - in particular in a large corporation? This workshop explores how innovation is socially shaped in organizations. Based on our experiences with practices around innovation and collaboration, we start from three proposition about the social shaping of innovation: • Ideas don't thrive as text (i.e. we need...... to consider other media) • Ideas need socialization (ideas are linked to people, we need to be careful about how we support the social innovation context) • Ideas are local (ideas spring out of a local contingency, we need to take care in how we like them to travel)....

  12. Digital Storytelling – Special issue

    Directory of Open Access Journals (Sweden)

    Yngve Nordkvelle

    2010-11-01

    Jacobs of the University of Minnesota have produced the rich media paper: “The Pedagogy of Digital Storytelling in the College Classroom. “ They report from the process when Raimist and Jacobs collaboratively designed and taught the course “Digital Storytelling in and with Communities of Color” with Candance Doerr-Stevens auditing the class as a graduate student. This article examines the media making processes of the students in the course, asking how participants used digital storytelling to engage with themselves and the media through content creation that both mimicked and critiqued current media messages.Mary F. Wright and Karen Ryan provide us with the article “Meshing the Personal with the Professional: Digital Storytelling in Higher Education” This paper chronicles a yearlong journey of learning about digital storytelling and leading the creation of five digital stories within a higher education community. The many uses of digital storytelling in higher education are explored as a reflective tool for practice, to highlight academic projects, interests or initiatives, and to simply reflect on how we are shaped by the stories we live and how we in turn share our diverse identities.

  13. Multichannel Digital Emulator of Radiation Detection Systems

    International Nuclear Information System (INIS)

    Abba, A.; Caponio, F.; Geraci, A.

    2013-06-01

    A digital system for emulating in real time signals from generic setups for radiation detection is presented. The instrument is not a pulse generator of recorded shapes but a synthesizer of random pulses compliant to programmable statistics for energy and occurrence time. Completely programmable procedures for emulation of noise, disturbances and reference level variation can be implemented. The instrument has been realized and fully tested. (authors)

  14. Digital enclosure and the communication commons revival

    OpenAIRE

    Anderson, Stephen Edward

    2008-01-01

    This thesis considers the political and economic forces shaping the Internet as a medium of increasing importance in everyday life. The digital communications infrastructure is currently facing commercial enclosure on three layers: physical (regulation and ownership of the wires), content (copyright policies, media technology, ownership), and space (ownership and orientation of online tools, spaces, and services). This thesis explores and analyzes the power dynamics driving enclosure on each ...

  15. Considering a possible future for Digital Journalism

    Directory of Open Access Journals (Sweden)

    Mark DEUZE

    2017-01-01

    Full Text Available Developments shaping digital journalism seem to speeding up at the start of the 21st century. Social media enable radical new ways to gather and verify sources and information. Hardware and software power innovative storytelling formats, combining platforms and channels, adding interactivity to the news experience. And the global news industry is quickly becoming a networked industry, with startups and other forms of entrepreneurial journalism springing up all over the world. In this essay, I consider a possible future for digital journalism by briefly reviewing first findings from a series of case studies of 21 new small-sized journalism enterprises operating in 11 countries (spread across 5 continents. The overarching research question: seen through their eyes, what does the future of (digital journalism look like? The answers are hopeful.

  16. Digitally Enhanced Violence Prevention in the Americas

    Directory of Open Access Journals (Sweden)

    Robert Muggah

    2013-11-01

    Full Text Available Latin America is one of the world’s most digitally connected regions, and also its most violent. Some governments and civil societies are evolving innovative and dynamic approaches to address the challenges of violence by taking advantage of expanding connectivity. New information and communication technologies (ICTs are being mobilized to strengthen the voice and capabilities of citizens and institutions to promote safety and security. Public and private actors are designing and applying innovative digital platforms and analytical tools to map insecurity online and off. This article reviews the emerging character and shape of 'digitally enhanced violence prevention' in Latin America, drawing primarily on the cases of Brazil, Colombia, and Mexico. It presents insights on the wider outcomes and drawbacks of these activities, and sets out some lessons learned and recommendations for future action.

  17. Progress in digital radiography

    International Nuclear Information System (INIS)

    Cappelle, A.

    2016-01-01

    Because of its practical aspect digital radiography is more and more used in the industrial sector. There are 2 kinds of digital radiography. First, the 'computed radiography' that uses a photon-stimulated screen, and after radiation exposure this screen must be read by an analyser to get a digit image. The second type is the 'direct radiography' that allows one to get a digit radiograph of the object directly. Digital radiography uses the same radioactive nuclides as radiography with silver films: cobalt, iridium or selenium. The spatial resolution of digital radiography is less good than with classical silver film radiography but digital radiography offers a better visual contrast. (A.C.)

  18. Digital positron annihilation spectrometer

    International Nuclear Information System (INIS)

    Cheng Bin; Weng Huimin; Han Rongdian; Ye Bangjiao

    2010-01-01

    With the high speed development of digital signal process, the technique of the digitization and processing of signals was applied in the domain of a broad class of nuclear technique. The development of digital positron lifetime spectrometer (DPLS) is more promising than the conventional positron lifetime spectrometer equipped with nuclear instrument modules. And digital lifetime spectrometer has many advantages, such as low noise, long term stability, flexible online or offline digital processing, simple setup, low expense, easy to setting, and more physical information. Digital constant fraction discrimination is for timing. And a new method of optimizing energy windows setting for digital positron lifetime spectrometer is also developed employing the simulated annealing for the convenient use. The time resolution is 220ps and the count rate is 200cps. (authors)

  19. 3D Printing of Shape Memory Polymers for Flexible Electronic Devices.

    Science.gov (United States)

    Zarek, Matt; Layani, Michael; Cooperstein, Ido; Sachyani, Ela; Cohn, Daniel; Magdassi, Shlomo

    2016-06-01

    The formation of 3D objects composed of shape memory polymers for flexible electronics is described. Layer-by-layer photopolymerization of methacrylated semicrystalline molten macromonomers by a 3D digital light processing printer enables rapid fabrication of complex objects and imparts shape memory functionality for electrical circuits. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. "Evil Cats" and "Jelly Floods": Young Children's Collective Constructions of Digital Art Making in the Early Years Classroom

    Science.gov (United States)

    Sakr, Mona; Connelly, Vince; Wild, Mary

    2016-01-01

    Digital technologies have the potential to offer new opportunities for children's expressive arts practices. Although adult expectations surround and shape children's visual art making on paper in the early years classroom, such expectations are not so established in relation to digital art making. So how do children make sense of digital art…

  1. A first experience with digital complete overdentures

    Directory of Open Access Journals (Sweden)

    Salwa Omar Bajunaid

    2016-07-01

    Full Text Available The development of computer-aided design/computer-aided manufacturing systems for dentistry in the 1980s resulted in the successful fabrication of crowns, fixed dental prostheses, and superstructures for both natural teeth and dental implants. Today, this technology is available for constructing digitally designed and milled, completely removable dental prostheses. The procedure uses clinical and laboratory protocols that allow fabrication of completely removable prostheses within two clinical appointments. The aim of this clinical report is to present the author’s first experience with digital complete overdentures, the practicality of this technology, and patient feedback. Compared with conventional overdentures, the fit of the digital prostheses was improved because the cameo and flanges of the prostheses were nicely shaped and rolled, and this enhanced their stability and retention. Occlusion was also excellent. However, aesthetics in terms of the alignment, shape, and size of the maxillary overdenture teeth were inacceptable. Despite some of the drawbacks identified in our study, the use of removable digital dentures does provide excellent adaptation of the denture base and requires fewer clinic visits. We anticipate that the unsatisfactory aesthetic outcomes presented in this report can be corrected with more experience. We also believe that acquiring an in-house scanning machine would be beneficial. We highly recommend including this technique in dental school curriculums at both the undergraduate and graduate levels in order to keep students and residents up to date on the latest technology available.

  2. Digital Banking: Risks of Financial Digitalization

    Directory of Open Access Journals (Sweden)

    Kornіvska Valerіa O.

    2017-09-01

    Full Text Available The paper demonstrates the results of the research into development of the digital economy in the global financial space, shows the contradictions of these processes in the context of the growth of financial inclusion of households, identifies the risks of active introduction of digital banking in poor countries of the world. The characteristics of the processes of growth of the influence of banking institutions on the operational activity and daily life of households are given, and it is proved that under conditions of digital banking, without having any other alternative ways of economic activity in terms of money circulation than non-cash turnover, clients are forced to agree to unlimited presence of financial operators in social systems. It is substantiated that in Ukraine the global risk of digitalization of the society is gradually developing as a result of the creation of unified information systems for the control of global financial flows.

  3. Dragon bridge - the world largest dragon-shaped (ARCH steel bridge as element of smart city

    Directory of Open Access Journals (Sweden)

    Chinh Luong Minh

    2016-01-01

    Full Text Available Dragon Bridge - The world’s largest dragon-shaped steel bridge, with an installation cost of $85 million USD, features 6 lanes for two separate directions, 666 meters of undulating steel in the shape of a dragon in the Ly Dynasty, the symbol of prosperity in Vietnamese culture. This unique and beautifully lit bridge, which also breathes fire and sprays water. It’s the purposeful integration of the lighting hardware articulates the dragon’s form, and the fire-breathing dragon head. This project transcends the notion of monumental bridge with dynamic colour-changing lighting, creating an iconic sculpture in the skyline that is both reverent and whimsical. The signature feature of the bridge was the massive undulating support structure resembling a dragon flying over the river. The dragon is prominent in Vietnamese culture as a symbol of power and nobility. Dragon Bridge stands out as a model of innovation. It has received worldwide attention in the design community and from the global media for its unique arch support system. Dragon Bridge serves as an example of how aesthetic quality of a design can serve cultural, economic and functional purposes. The article presents design solutions of the object and the evaluation of the technical condition before putting the facility into service.

  4. Trends Shaping Education 2010

    Science.gov (United States)

    OECD Publishing (NJ3), 2010

    2010-01-01

    "Trends Shaping Education 2010" brings together evidence showing the effects on education of globalisation, social challenges, changes in the workplace, the transformation of childhood, and ICT. To make the content accessible, each trend is presented on a double page, containing an introduction, two charts with brief descriptive text and a set of…

  5. Aerodynamically shaped vortex generators

    DEFF Research Database (Denmark)

    Hansen, Martin Otto Laver; Velte, Clara Marika; Øye, Stig

    2016-01-01

    An aerodynamically shaped vortex generator has been proposed, manufactured and tested in a wind tunnel. The effect on the overall performance when applied on a thick airfoil is an increased lift to drag ratio compared with standard vortex generators. Copyright © 2015 John Wiley & Sons, Ltd....

  6. Shape Up Europe

    DEFF Research Database (Denmark)

    Simovska, Venka; Jensen, Bjarne Bruun

    "Shape Up: a School Community Approach to Influencing the Determinants of Childhood Overweight and Obesity, Lessons Learnt" is a report that aims to provide a synthesis of the project overall evaluation documentation, with a view to systematically review and discuss lessons learnt, and to suggest...

  7. Perceiving animacy from shape.

    Science.gov (United States)

    Schmidt, Filipp; Hegele, Mathias; Fleming, Roland W

    2017-09-01

    Superordinate visual classification-for example, identifying an image as "animal," "plant," or "mineral"-is computationally challenging because radically different items (e.g., "octopus," "dog") must be grouped into a common class ("animal"). It is plausible that learning superordinate categories teaches us not only the membership of particular (familiar) items, but also general features that are shared across class members, aiding us in classifying novel (unfamiliar) items. Here, we investigated visual shape features associated with animate and inanimate classes. One group of participants viewed images of 75 unfamiliar and atypical items and provided separate ratings of how much each image looked like an animal, plant, and mineral. Results show systematic tradeoffs between the ratings, indicating a class-like organization of items. A second group rated each image in terms of 22 midlevel shape features (e.g., "symmetrical," "curved"). The results confirm that superordinate classes are associated with particular shape features (e.g., "animals" generally have high "symmetry" ratings). Moreover, linear discriminant analysis based on the 22-D feature vectors predicts the perceived classes approximately as well as the ground truth classification. This suggests that a generic set of midlevel visual shape features forms the basis for superordinate classification of novel objects along the animacy continuum.

  8. The moon changes shape

    CERN Document Server

    Beaton, Kathryn

    2015-01-01

    "Young children are naturally curious about the world around them. The Moon Changes Shape offers answers to their most compelling questions about the lunar phases. Age-appropriate explanations and appealing photos encourage readers to continue their quest for knowledge. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words."-- Provided by publisher.

  9. Bend me, shape me

    CERN Document Server

    2002-01-01

    A Japanese team has found a way to bend and shape silicon substrates by growing a thin layer of diamond on top. The technique has been proposed as an alternative to mechanical bending, which is currently used to make reflective lenses for X-ray systems and particle physics systems (2 paragraphs).

  10. How life shaped Earth.

    Science.gov (United States)

    Gross, Michael

    2015-10-05

    Earth is much more complex than all the other solar system objects that we know. Thanks to its rich and diverse geology, our planet can offer habitats to a wide range of living species. Emerging insights suggest that this is not just a happy coincidence, but that life itself has in many ways helped to shape the planet.

  11. The spatialisation of the digital games industry: Lessons from Ireland

    OpenAIRE

    Kerr, Aphra; Cawley, Anthony

    2011-01-01

    This article draws on the concept of spatialisation to better understand the development of a digital games industry on the periphery of mainland Europe, on the island of Ireland. Positioning digital games within the cultural and creative industries, we explore how global networks of production in this industry get territorialized, negotiated and shaped by local factors. Drawing upon an industry-wide survey in Ireland we found that employment has grown by 400% in the last decade but that this...

  12. Duality based contact shape optimization

    DEFF Research Database (Denmark)

    Vondrák, Vít; Dostal, Zdenek; Rasmussen, John

    2001-01-01

    An implementation of semi-analytic method for the sensitivity analysis in contact shape optimization without friction is described. This method is then applied to the contact shape optimization.......An implementation of semi-analytic method for the sensitivity analysis in contact shape optimization without friction is described. This method is then applied to the contact shape optimization....

  13. Nanoreinforced shape memory polyurethane

    Science.gov (United States)

    Richardson, Tara Beth

    Shape memory polymers (SMPs) are functional materials, which find applications in a broad range of temperature sensing elements and biological micro-electro-mechanical systems (MEMS). These polymers are capable of fixing a transient shape and recovering to their original shape after a series of thermo-mechanical treatments. Generally, these materials are thermoplastic segmented polyurethanes composed of soft segments, usually formed by a polyether macroglycol, and hard segments formed from the reaction of a diisocyanate with a low molecular mass diol. The hard segment content is a key parameter to control the final properties of the polymer, such as rubbery plateau modulus, melting point, hardness, and tensile strength. The long flexible soft segment largely controls the low temperature properties, solvent resistance, and weather resistance properties. The morphology and properties of polyurethanes (PU) are greatly influenced by the ratio of hard and soft block components and the average block lengths. However, in some applications, SMPs may not generate enough recovery force to be useful. The reinforcement of SMPs using nanofillers represents a novel approach of enhancing the performance of these materials. The incorporation of these fillers into SMPs can produce performance enhancements (particularly elastic modulus) at small nanoparticle loadings (˜1-2 wt %). An optimal performance of nanofiller-polymer nanocomposites requires uniform dispersion of filler in polymers and good interfacial adhesion. The addition of nanofillers like cellulose nanofibers (CNF), conductive cellulose nanofibers (C-CNF), and carbon nanotubes (CNTs) allows for the production of stiffer materials with deformation capacity comparable to that of the unfilled polymer. Additionally, the use of conductive nanoreinforcements such as C-CNF and CNTs leads to new pathways for actuation of the shape memory effect. During this work, thermoplastic shape memory polyurethanes were synthesized with

  14. Theory of Digital Automata

    CERN Document Server

    Borowik, Bohdan; Lahno, Valery; Petrov, Oleksandr

    2013-01-01

    This book serves a dual purpose: firstly to combine the treatment of circuits and digital electronics, and secondly, to establish a strong connection with the contemporary world of digital systems. The need for this approach arises from the observation that introducing digital electronics through a course in traditional circuit analysis is fast becoming obsolete. Our world has gone digital. Automata theory helps with the design of digital circuits such as parts of computers, telephone systems and control systems. A complete perspective is emphasized, because even the most elegant computer architecture will not function without adequate supporting circuits. The focus is on explaining the real-world implementation of complete digital systems. In doing so, the reader is prepared to immediately begin design and implementation work. This work serves as a bridge to take readers from the theoretical world to the everyday design world where solutions must be complete to be successful.

  15. Digital radiology and ultrasound

    International Nuclear Information System (INIS)

    Todd-Pokropek, A.

    1991-01-01

    With the access to digital methods for handling and processing images in general, many medical imaging methods are becoming more effectively handled digitally. This applies in particular to basically digital techniques such as CT and MR but also now includes Nuclear Medicine (NM), Ultrasound (US) and a variety of radiological procedures such as Digital Subtraction Angiography (DSA) and Fluoroscopy (DF). The access to conventional projection images by stimulatable plates (CR) or by digitization of film makes all of radiology potentially accessible, and the management of such images by a network is the basic aim of Picture Archiving and Communication Systems (PACS). However, it is suggested that in order for such systems to be of greater value, that way in which such images are treated needs to change, that is, digital images can be used to derive additional clinical value by appropriate processing

  16. Digital cine-imaging

    International Nuclear Information System (INIS)

    Masuda, Kazuhiro

    1992-01-01

    Digitization of fluoroscopic images has been developed for the digital cine imaging system as a result of the computer technology, television technology, and popularization of interventional radiology. Present digital cine imaging system is able to offer images similar to cine film because of the higher operatability and better image quality with the development of interventional radiology. As a result, its higher usefulness for catheter diagnosis examination except for interventional radiology was reported, and the possibility of having filmless cine is close to becoming a reality. However several problems have been pointed out, such as spatial resolution, time resolution, storage and exchangeability of data, disconsolidated viewing functions, etc. Anyhow, digital cine imaging system has some unresolved points and lots the needs to be discussed. The tendency of digitization is the passage of the time and we have to promote a study for more useful digital cine imaging system in team medical treatment which centers on the patients. (author)

  17. Metaphorically Speaking: Possibilities of Theatre Performance in the Digital Age

    OpenAIRE

    Juncan, Ioana

    2012-01-01

    [EN] This essay reflects on the quality of the theatre performance as medium in the digital age through a discussion of the theatre of Peter Handke. The aim is to make manifest and engage with habits of thought and perception shaped by the digital, as well as investigate the ways in which they intersect with habits of thought and perception materialized in and mobilized by theatre performance in the specific case of Handke’s theatre (a theatre created, arguably, at the beginnings of the digit...

  18. Digital Media Use in Families: Theories and Strategies for Intervention.

    Science.gov (United States)

    Dalope, Kristin A; Woods, Leonard J

    2018-04-01

    Family dynamics are increasingly being influenced by digital media. Three frameworks are described to help clinicians to understand and respond to this influence. First, a social-ecological framework shows how media has both a direct and indirect impact on individuals, relationships, communities, and society. Next, family systems theory is introduced to demonstrate digital media-related interactions within families. Finally, a developmental framework explores the role of digital media in shaping parenting. These theories are then integrated into practical strategies that clinicians can use, including recommendations and resources from the American Academy of Pediatrics. Copyright © 2017 Elsevier Inc. All rights reserved.

  19. Column: The Consortium of Digital Forensics Specialists (CDFS

    Directory of Open Access Journals (Sweden)

    Christopher Kelley

    2011-09-01

    Full Text Available Digital forensic practitioners are faced with an extraordinary opportunity. In fact, we may never again be faced with such an opportunity, and this opportunity will challenge us in ways we may never again be challenged.At this point in the history of the Digital Forensics profession, digital forensic specialists have the unique opportunity to help this profession emerge from its infancy. But for this profession to mature -- and to flourish -- individuals and organizations integral to the practice must assemble and shape its future. This is our opportunity. In fact, this is our mandate.(see PDF for full column

  20. Building an intranet digital mammography case library

    Science.gov (United States)

    Zhang, Hong; Lou, Shyhliang A.; Fan, Yu; Sickles, Edward A.; Huang, H. K.

    2000-05-01

    To practice mammography diagnosis effectively, radiologists expect convenient access to well-organized and authoritative mammography related information, especially when there is case in question. The purpose of this study is to build infrastructural diagnosis support by incorporating various clinical information into a digital mammography case library, and allow user to search the library based on mammographic findings. The digital mammography case library has a three- tier architecture: (1) Back-end mammography databases integrate multimedia clinical information from various operational systems, including RIS and PACS. Cases are stored in a finding index database powered by an object-relational database with finding-coded reports, which are modeled around the ACR BI-RADS (American College of Radiology, Breast Imaging Report and Data System) standard. (2) The middle-end application controllers process application logic, such as user authorization, HTTP request handling, database connection and dynamic HTML page generation. (3) Web-based user interface is developed for authorized Intranet personnel to formulate query based on radiological finding (such as mass, calcification and architectural distortion), shape and assessment, using ACR BI-RADS specified lexicon. The case library so far has 103 cases selected from over 800 digital mammography studies carried out at the Mt. Zion hospital, UCSF, during an on-going digital telemammography project. We believe that an Intranet based digital mammography case library with mammographic finding search capability facilitates continuous medical education and online decision support, by providing exemplary study to compare with case in question.